- osmocom-net-gprs - lists.osmocom.org

[PATCH net-next 0/4] gtp: support multiple APN's per GTP endpoint
by Andreas Schultz 14 Mar '17

14 Mar '17

Support multiple APN's per GTP endpoint and as an additional benefit support multiple GTP sockets per GTP entity. Use case multiple APN's: ------------------------ In 3GPP a APN is control path construct. When mappend into the data path, it mean that UE IP's can be source from independended IP networks with overlaping IP ranges. 3GPP, TS 29.061 version 13.6.0 Release 13, Section 11.3 describes this as: > 2. each private network manages its own addressing. In general this will > result in different private networks having overlapping address ranges. > A logically separate connection (e.g. an IP in IP tunnel or layer 2 > virtual circuit) is used between the GGSN/P-GW and each private network. > In this case the IP address alone is not necessarily unique. The pair > of values, Access Point Name (APN) and IPv4 address and/or IPv6 prefixes, > is unique. To support such a setup, each APN is mapped to a Linux network device. VRF-Lite, network namespaces or other mechanismns can the be used to realize the full separation of the per APN IP networks. Use case multiple GTP sockets per GTP entity: --------------------------------------------- A GTP entity like a PGW can use multiple GTP sockets for: * separate IPv4 and IPv6 transport endpoints * support multiple reference points in separated IP networks, e.g. have Gn/Gp/S5/S8 in a GRX attaches network and S2a/S2b in another private network Especially the S2a/S2b separation is an important scenario. The networks use for roaming and non roaming attachment (Gn/Gp/S5/S8 reference points) are usually different from the connection for trusted and untrusted WiFi access (S2a/S2b). Will the GTP transport networks are separated, it is still desirable to terminated the tunnels in the same GTP entity to ensure uninterrupted IP connectivity during 3G/LTE to/from WiFi handover. Implementation: --------------- APN's are a control path construct, the identification of the associated network device need therefore to be bound to be tunnel endpoint identifier. This series moves the hash for the incoming tunnel endpoint identifiers into the socket to support multiple network devices per GTP socket. It the adds a method of enabling the GTP encapsulation on a socket without having to bound the socket to a network device and finally allows to specify a GTP socket per PDP context. API impact: ----------- This is probably the most problematic part of this series... The removeal of the TEID form the netdevice also means that the gtp genl API for retriving tunnel information and removing tunnels needs to be adjusted. Before this change it was possible to change a GTP tunnel using the gtp netdevice id and the teid. The teid is no longer unique per gtp netdevice. After this change it has to be either the netdevice and MS IP or the GTP socket and teid. Fortunatly, libgtpnl has always populated the Link Id, TEID, GSN Peer IP and MS IP. The library interface has ensured that all information that is mandatory after this change is guaranteed to be present. The only project that doesn't use libgtpnl (OpenAir-CN) is also populating all of those values. The API change will therefore not break any existing userspace applications. -- Andreas Schultz (4): gtp: move TEID hash to per socket structure gtp: add genl cmd to enable GTP encapsulation on UDP socket gtp: add support to select a GTP socket during PDP context creation Extend Kernel GTP-U tunneling documentation Documentation/networking/gtp.txt | 103 ++++++++++++++- drivers/net/gtp.c | 263 ++++++++++++++++++++++++++++----------- include/uapi/linux/gtp.h | 4 + 3 files changed, 292 insertions(+), 78 deletions(-) -- 2.10.2

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[PATCH net-next v5 0/7] gtp: misc improvements
by Andreas Schultz 13 Mar '17

13 Mar '17

Hi Pablo, This is a resent of last series that missed the merge window. There are no changes compared to v4. v4: Compared to v3 it contains mostly smallish naming and spelling fixes. It also drops the documentation patch, Harald did a better job with the documentation and the some things I described do not yet match the implementation. I'll readd the relevant parts with a follow up series. This series lays the groundwork for removing the socket references from the GTP netdevice by removing duplicate code and simplifying the logic on some code paths. It slighly changes the GTP genl API by making the socket parameters optional (though one of them is still required). The removal of the socket references will break the 1:1 releation between GTP netdevice and GTP socket that prevents us to support multiple VRFs with overlapping IP addresse spaces attached to the same GTP-U entity (needed for multi APN support, coming a follow up series). Pablo found a socket hold problem in v2. In order to solve that I had to switch the socket references from the struct socket to the internal struct sock. This should have no functionl impact, but we can now hang on to the reference without blocking user space from closing the GTP socket. v4->v5: * resent for new merge window v3->v4: * drop the documentation patch * spelling fixes * pass nlattr instead of genl_info into gtp_find_dev, makes the code slightly more compact and readable v2->v3: * add documentation to explain the goal of all these changes * incorporate review comments * switch from struct socket to struct sock Regards Andreas -- Andreas Schultz (7): gtp: switch from struct socket to struct sock for the GTP sockets gtp: make GTP sockets in gtp_newlink optional gtp: merge gtp_get_net and gtp_genl_find_dev gtp: consolidate gtp socket rx path gtp: unify genl_find_pdp and prepare for per socket lookup gtp: consolidate pdp context destruction into helper gtp: add socket to pdp context drivers/net/gtp.c | 543 +++++++++++++++++++++++++++--------------------------- 1 file changed, 269 insertions(+), 274 deletions(-) -- 2.10.2

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SMS over GPRS
by Christian Wilkinson 10 Mar '17

10 Mar '17

Hi! According to the OsmoSGSN wiki, SMS delivery over GPRS is currently a TODO item. I was wondering about the current state of this feature, and if there is any work in progress that could be built upon. Is there an estimate of the amount of dev work required to contribute this feature to the project? Thanks, Christian

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Basic test setup for testing of Kernel GTP-U
by Harald Welte 24 Feb '17

24 Feb '17

Hi all, [intentionally breaking the thread here] On Thu, Feb 23, 2017 at 05:46:57PM +0100, Harald Welte wrote: > I'll try to cook up some instructions extending > https://osmocom.org/projects/openggsn/wiki/OpenGGSN to cover also > sgsnemu for a basic use case of establishing one single tunnel. That's > of course like a manual "HOWTO" and not yet anything that can be tested > automatically. I've documented the instructions at https://osmocom.org/projects/linux-kernel-gtp-u/wiki/Basic_Testing Please let me know any updates/corrections/questions if you try to reproduce this. The above instructions were working for me yesterday. Please find an ASCII export of this below (much less readable than the wiki). Regards, Harald h1. Basic Testing This page documents some basic testing setup for the Kenrel GTP-U code. It follows the below rationale: * focus on testing the kernel GTP-U module without too much external dependencies * test GTP-U interoperability of the kernel with at least one other implementation, not just kernel-to-kernel (which currently is not supported in the kernel, as it only implements the GGSN/P-GW role) * limit testing to SGSN/S-GW and GGSN/P-GW, without a real cellular network (which is possible e.g. using [[OsmoSGSN:]] and [[OsmoPCU:]]) h2. Building / Installing dependencies In order to follow below test instructions, you will need * A Linux kernel including the GTP-U driver (@drivers/net/gtp.c@) either compiled-in or as kernel module * [[libgtpnl]] - the userspace library providing an API around the kernel GTP-U netlink interface * [[OpenGGSN:]] - a minimal C-language implementation of a 3GPP GGSN, also contains a SGSN-side emulator called [[OpenGGSN:sgsnemu]] ** make sure you use Version 0.93 or later ** make sure you compile it with @--enable-gtp-linux@ enable during the @./configure@ step You can find some instructions on how to build [[OpenGGSN:]] with support for [[libgtpnl]] and kernel GTP-U at this wiki page: [[OpenGGSN:Kernel_GTP]] h2. Test setup description We will run the GGSN natively on the host, and put the emulated SGSN inside a separate network namespace. The two namespaces are interconnected by a virtual ethernet device using the transfer network 172.31.1.0/24 The GGSN is configured to provide a pool of IP addresses from the 192.168.71.0/24 range. Each PDP context will be allocated one dynamic address from that pool h2. Test instructions h3. create the network namespace for the SGSN ip netns add sgsn h3. add veth to be used between SGSN and GGSN ip link add veth0 type veth peer name veth1 h3. remote (SGSN) side of veth device <pre> ip link set veth1 netns sgsn ip netns exec sgsn ip addr add 172.31.1.2/24 dev veth1 ip netns exec sgsn ip link set veth1 up </pre> h3. local (GGSN) side of veth device <pre> ip addr add 172.31.1.1/24 dev veth0 ip link set veth0 up </pre> h3. execute the GGSN on the host ggsn -g -c ./ggsn.conf.test (use the file attached to this wiki page) The @-g@ option is responsible for activating kernel-GTP support. If you cannot get the example described in this document to work, try the pure GTP-U userspace implementation by removing @-g@ from the above command line. If it works then, there's something related to Kernel GTP-U that breaks the setup. h3. execute the emulated SGSN inside the sgsn namespace ip netns exec sgsn sgsnemu -d -r 172.31.1.1 -l 172.31.1.2 --defaultroute --createif h3. verify the existnace of the GTP tunnel <pre> ggsn:~# gtp-tunnel list version 1 tei 1/1 ms_addr 192.168.71.2 sgsn_addr 172.31.1.2 </pre> h3. further testing in the @sgsn@ namespace, there's now a default-route that points into the GTP tunnel. You can use this to ping any network address that's reachable to the GGSN host. If that host is connected to the internet, you can e.g. run a ping command from within the namespace using ip netns exec sgsn ping -c 10 8.8.8.8 which will send some IP packets to 8.8.8.8 via the tun0 device (created by [[OpenGGSN:sgsnemu]]). It will be encapsulated by the userspace GTP-U implementation of sgsnemu, sent via the veth device to the host, where it ends up inthe GTP-U kernel module, decapsulating the package and passing in on to the gtp0 device there. Anything beyond that point depends on your local routing configuration. == Building OpenGGSN == h1. OpenGGSN and Linux Kernel accelerated GTP-U OpenGGSN has support to use the Linux kernel GTP-U code to accelerate the data/user plane while still implementing the control plane (GTP-C) in userspace in OpenGGSN. For more information about the Linux kernel GTP-U code, please see [[linux-kernel-gtp-u:]] h2. Building OpenGGSN with kernel which has GTP-U support At the time of writing (2017-01-09) of this wiki, below listed distributions have support of GTP kernels : * Debian 4.9.1-1~exp1 - Debian's latest experimental build * Ubuntu 16.10 kernel 4.8 * OpenSUSE Tumbleweed (stable) 4.8 (.12) * Fedora 25 kernel 4.8 Following two Debian kernels do not activate GTP kernel module during build: 4.8.0 and 4.9.0. *It is expected that complete openbsc project and related dependencies are pre-installed.* Check if package @libc-ares-dev@ is installed and if not please add it. Ubuntu 16.10, kernel 4.8.0-30-generic is used. * Installing dependencies and build library @libgtpnl@ You can install those packages with: <pre> sudo apt install libtalloc-dev libpcsclite libmnl-dev </pre> Please follow instructions provided at [[cellular-infrastructure:Build from source]] in order to install following library and projects : Information about dependencies between Osmocom projects is given at the above link: * libgtpnl <pre> sudo make install sudo ldconfig </pre> * libosmocore * openggsn <pre> ./configure --enable-gtp-linux make sudo make install sudo ldconfig </pre> Following message is shown at end of the command: @ ./configure --enable-gtp-linux@ <pre> openggsn Configuration: GTP Linux kernel support: yes </pre> This means that appropriate header files are available. -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

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[PATCH net-next v4 0/7] gtp: misc improvements
by Andreas Schultz 23 Feb '17

23 Feb '17

Hi Pablo, This is v4 of the GTP improvements. Compared to v3 it contains mostly smallish naming and spelling fixes. It also drops the documentation patch, Harald did a better job with the documentation and the some things I described do not yet match the implementation. I'll readd the relevant parts with a follow up series. This series lays the groundwork for removing the socket references from the GTP netdevice by removing duplicate code and simplifying the logic on some code paths. It slighly changes the GTP genl API by making the socket parameters optional (though one of them is still required). The removal of the socket references will break the 1:1 releation between GTP netdevice and GTP socket that prevents us to support multiple VRFs with overlaping IP addresse spaces attached to the same GTP-U entity (needed for multi APN support, comming a follow up series). Pablo found a socket hold problem in v2. In order to solve that I had to switch the socket references from the struct socket to the internal struct sock. This should have no functionl impact, but we can now hang on to the reference without blocking user space from closing the GTP socket. v3->v4: * drop the documentation patch * spelling fixes * pass nlattr instead of genl_info into gtp_find_dev, makes the code slightly more compact and readable v2->v3: * add documentation to explain the goal of all these changes * incorporate review comments * switch from struct socket to struct sock Regards Andreas -- Andreas Schultz (7): gtp: switch from struct socket to struct sock for the GTP sockets gtp: make GTP sockets in gtp_newlink optional gtp: merge gtp_get_net and gtp_genl_find_dev gtp: consolidate gtp socket rx path gtp: unify genl_find_pdp and prepare for per socket lookup gtp: consolidate pdp context destruction into helper gtp: add socket to pdp context drivers/net/gtp.c | 543 +++++++++++++++++++++++++++--------------------------- 1 file changed, 269 insertions(+), 274 deletions(-) -- 2.10.2

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[PATCH net-next v3 0/8] gtp: misc improvements
by Andreas Schultz 22 Feb '17

22 Feb '17

Hi Pablo, This is v3 of the GTP improvements. This series lays the groundwork for removing the socket references from the GTP netdevice by removing duplicate code and simplifying the logic on some code paths. It slighly changes the GTP genl API by making the socket parameters optional (though one of them is still required). The removal of the socket references will break the 1:1 releation between GTP netdevice and GTP socket that prevents us to support multiple VRFs with overlaping IP addresse spaces attached to the same GTP-U entity (needed for multi APN support). Pablo found a socket hold problem in v2. In order to solve that I had to switch the socket references from the struct socket to the internal struct sock. This should have no functionl impact, but we can now hang on to the reference without blocking user space from closing the GTP socket. There was also some length off-list conversation about why the netdevice to socket relation needs to be changed at all. Harald did already agree to this but Pablo had some questions. I've tried to address that with a bit of dokumentation for the GTP module. Hopefully this will explain the need for the change sufficiently. This series does have conflicts with the SGSN side tunnel work done by Jonas Bonn. The unification of the tunnel Rx code touches the same places he changed. v2->v3: * add documentation to explain the goal of all these changes * incorporate review comments * switch from struct socket to struct sock Regards Andreas -- Andreas Schultz (8): gtp: add documentation gtp: switch from struct socket to struct sock for the GTP sockets gtp: make GTP sockets in gtp_newlink optional gtp: merge gtp_get_net and gtp_genl_find_dev gtp: consolidate gtp socket rx path gtp: unify genl_find_pdp and prepare for per socket lookup gtp: consolidate pdp context destruction into helper gtp: add socket to pdp context Documentation/networking/gtp.txt | 112 ++++++++ drivers/net/gtp.c | 548 +++++++++++++++++++-------------------- 2 files changed, 386 insertions(+), 274 deletions(-) create mode 100644 Documentation/networking/gtp.txt -- 2.10.2

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Roaming allowed for using local sims
by Saba Arshad 20 Feb '17

20 Feb '17

Hello, I want to use the local sims having different MNC/MCC for implementing GPRS using osmocoms with OpenBTS same as I have used them for GSM calls and sms using only openBTS. But your site http://openbsc.osmocom.org/trac/wiki/OpenBSC_GPRS says, "it is currently not possible". As it is long when posted on this site so I want to ask is it possible *now* to use the local sims? Hope you have understood my question. Waiting for your reply. Thanks. Regards, Saba Arshad

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osmocom Kernel GTPU module - Support for incoming DL packets for idle mode users in S-GW /SGSN
by Anoop Singh Tomar 19 Feb '17

19 Feb '17

Hi , Posting question related to capability to implement user plane (GTP tunnel) for S1-U and Iu-PS interface between S-GW & eNB and SGSN & RNC respectively via osmocom kernel GTP-U module. At present it seems if TE-ID is not valid packet is dropped in kernel GTP-U module. So in order to use this for S1-U/Iu-PS interface it is required to add support for following use-case: * Down link packet arrival in S-GW /SGSN for UE which is in idle mode - Buffer the packet and trigger paging to move the UE to connected. a. When UE moves to idle mode - S1-U or IuPS bearer is released. In this case IP address and TE-ID of eNB/RNC becomes invalid. b. DL Packet is received for the idle mode UE in S-GW/SGSN - In this case , kernel GTP-U module should deliver packet to user-space application (SGW/osmoSGSN) so that these packets can be buffered in user space and paging can be initiated. Question - Is there any plan to support above in near-future in osmocom kernel GTP-U module or larger question would be to plan to enable usage of kernel GTP-U module in SGSN and SGW towards RAN ? Thanks, Anoop

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Re: [PATCH 1/1] gtp: support SGSN-side tunnels
by Harald Welte 13 Feb '17

13 Feb '17

Hi Andreas, Pablo, Jonas, I think that the SGSN/GGSN role flag (or whatever it may end up being called) logically belongs in the gtp-device at this point, and will in the future belong to the UDP/GTP-socket (with Andreas' proposed changes). Having it per-pdp-context indeed seems odd and just provide a way to create broken configurations (and increase the memory use per pdp context, of which you have many more than netdevs or gtp-sockets). -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

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tbf test segfault
by Max 12 Jan '17

12 Jan '17

Hi. The current OsmoPCU master has segfault in tbf test - at least on my machine: Destroying MS object, TLLI = 0x00000000 === start test_tbf_dl_llc_loss === Assert failed !check_element_exists(cnode, cmd->string) command.c:626 backtrace() returned 9 addresses /usr/lib/x86_64-linux-gnu/libosmovty.so.3(install_element+0xce) [0x7ffff77a5f9e] /usr/lib/x86_64-linux-gnu/libosmovty.so.3(install_element_ve+0x11) [0x7ffff77a6411] /usr/lib/x86_64-linux-gnu/libosmogb.so.4(gprs_ns_vty_init+0x17) [0x7ffff79c1da7] /home/max/source/gsm/osmo-pcu/tests/tbf/TbfTest(+0x22640) [0x555555576640] /home/max/source/gsm/osmo-pcu/tests/tbf/TbfTest(+0x1a73a) [0x55555556e73a] /home/max/source/gsm/osmo-pcu/tests/tbf/TbfTest(+0x1697f) [0x55555556a97f] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf1) [0x7ffff67e53f1] /home/max/source/gsm/osmo-pcu/tests/tbf/TbfTest(+0x16eda) [0x55555556aeda] Program received signal SIGABRT, Aborted. __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:58 58 ../sysdeps/unix/sysv/linux/raise.c: No such file or directory. (gdb) bt #0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:58 #1 0x00007ffff67fc3ea in __GI_abort () at abort.c:89 #2 0x00007ffff77a5fa3 in cmd_make_descvec (descstr=<optimized out>, string=<optimized out>) at command.c:327 #3 install_element (ntype=ntype@entry=1, cmd=cmd@entry=0x7ffff7bcf680 <show_ns_cmd>) at command.c:630 #4 0x00007ffff77a6411 in install_element_ve (cmd=cmd@entry=0x7ffff7bcf680 <show_ns_cmd>) at command.c:637 #5 0x00007ffff79c1da7 in gprs_ns_vty_init (nsi=<optimized out>) at gprs_ns_vty.c:578 #6 0x0000555555576640 in gprs_bssgp_create_and_connect (bts=<optimized out>, local_port=<optimized out>, sgsn_ip=<optimized out>, sgsn_port=<optimized out>, nsei=<optimized out>, nsvci=<optimized out>, bvci=1234, mcc=1, mnc=1, lac=0, rac=0, cell_id=0) at gprs_bssgp_pcu.cpp:847 #7 0x000055555556e73a in test_tbf_dl_llc_loss () at tbf/TbfTest.cpp:499 #8 0x000055555556a97f in main (argc=<optimized out>, argv=<optimized out>) at tbf/TbfTest.cpp:2883 Which also seems to be reproducible in jenkins: http://jenkins.osmocom.org/jenkins/job/osmo-pcu-gerrit/477/label=linux_amd6… That's odd cause it should have been caught by jenkins way before. Anyone else seeing this? -- Max Suraev <msuraev(a)sysmocom.de> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschaeftsfuehrer / Managing Director: Harald Welte

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Contribute to Osmocom and receive a free 3.5G femtocell
by Harald Welte 09 Jan '17

09 Jan '17

Dear all, not everyone might have seen the news item that was posted in late December on our website at http://osmocom.org/news/62 I'm looking forward to receiving your proposal on how you would contribute to the Osmocom project if you were to receive one of those free 3.5G femtocells. Quote of the news item below: ------ So please excuse me to cross-post this over several Osmocom project mailing lists. I know that a number of people have either hacked on femtocells in the past, or at least expressed interest in doing so... Osmocom's support for 2G/GSM is mature and widespread. Since 2016, we're taking on the next level: 3G/3.5G. The key to running your own 3G network is to obtain actual 3G cell hardware -- here is an exciting opportunity to get started: No less than 50 femtocells will be given away for free by sysmocom, one of the main drivers of the Osmocom project. To receive a free 3G femtocell, tell us how you will help the Osmocom project drive 3.5G forward if you had one, before the end of January 2017. This marks the launch of the 3.5G Acceleration Project, backed by the Osmocom community. Join us! Find further details on the 3.5G Acceleration Project and receiving your own 3G femtocell for free at https://sysmocom.de/downloads/accelerate_3g5_cfp.pdf. ------ Best regards and happy hacking, Harald Welte -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

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[osmo-pcu 0.2.875-b3df5] testsuite: 3 4 failed
by Martin Hauke 07 Jan '17

07 Jan '17

-------------------------------------------------------------------- 3: tbf FAILED (testsuite.at:23) 4: bitcomp FAILED (testsuite.at:30) -------------------------------------------------------------------- os: openSUSE Tumbleweed arch: aarch64 compiler: c++ (SUSE Linux) 6.2.1 20161209 [gcc-6-branch revision 243481] configure options: --disable-static --enable-shared libosmocore: 0.9.6.48-3419 I have attached testsuite.log best regards, Martin

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osmo-pcu: Re: New Defects reported by Coverity Scan for Osmocom
by Neels Hofmeyr 23 Dec '16

23 Dec '16

On Thu, Dec 22, 2016 at 10:15:36AM -0800, scan-admin(a)coverity.com wrote: > *** CID 158969: Null pointer dereferences (FORWARD_NULL) > /source-Osmocom/osmo-pcu/src/gprs_rlcmac_sched.cpp: 131 in sched_select_ctrl_msg(unsigned char, unsigned char, unsigned int, unsigned char, gprs_rlcmac_pdch *, gprs_rlcmac_tbf *, gprs_rlcmac_tbf *, gprs_rlcmac_ul_tbf *)() > 125 struct msgb *msg = NULL; > 126 struct gprs_rlcmac_tbf *tbf = NULL; > 127 struct gprs_rlcmac_tbf *next_list[3] = { ul_ass_tbf, dl_ass_tbf, ul_ack_tbf }; > 128 > 129 for (size_t i = 0; i < ARRAY_SIZE(next_list); ++i) { > 130 tbf = next_list[(pdch->next_ctrl_prio + i) % 3]; > >>> CID 158969: Null pointer dereferences (FORWARD_NULL) > >>> Comparing "tbf" to null implies that "tbf" might be null. > 131 if (!tbf) > 132 continue; > 133 > 134 /* > 135 * Assignments for the same direction have lower precedence, > 136 * because they may kill the TBF when the CONTROL ACK is Even though coverity triggered on the recent addition of tbf->ms()->update_dl_ctrl_msg(); in osmo-pcu da7250ad2c1cd5ddc7d3c6e10435a00b357ef8f7, this problem has existed before. This function is handling the tbf pointer improperly. Let's take a look: static struct msgb *sched_select_ctrl_msg( uint8_t trx, uint8_t ts, uint32_t fn, uint8_t block_nr, struct gprs_rlcmac_pdch *pdch, struct gprs_rlcmac_tbf *ul_ass_tbf, struct gprs_rlcmac_tbf *dl_ass_tbf, struct gprs_rlcmac_ul_tbf *ul_ack_tbf) { struct msgb *msg = NULL; struct gprs_rlcmac_tbf *tbf = NULL; This NULL init would only make sense if ARRAY_SIZE(next_list) were zero. Will not happen. struct gprs_rlcmac_tbf *next_list[3] = { ul_ass_tbf, dl_ass_tbf, ul_ack_tbf }; for (size_t i = 0; i < ARRAY_SIZE(next_list); ++i) { tbf = next_list[(pdch->next_ctrl_prio + i) % 3]; if (!tbf) continue; /* * Assignments for the same direction have lower precedence, * because they may kill the TBF when the CONTROL ACK is * received, thus preventing the others from being processed. */ if (tbf == ul_ass_tbf && tbf->direction == GPRS_RLCMAC_DL_TBF) if (tbf->ul_ass_state == GPRS_RLCMAC_UL_ASS_SEND_ASS_REJ) msg = ul_ass_tbf->create_packet_access_reject(); else msg = ul_ass_tbf->create_ul_ass(fn, ts); else if (tbf == dl_ass_tbf && tbf->direction == GPRS_RLCMAC_UL_TBF) msg = dl_ass_tbf->create_dl_ass(fn, ts); else if (tbf == ul_ack_tbf) msg = ul_ack_tbf->create_ul_ack(fn, ts); if (!msg) { tbf = NULL; If this is not the last for() iteration, setting tbf = NULL makes no sense, it will be set to next_list[..] at the start of the next iteration. If this *is* the last iteration, tbf = NULL makes no sense either, because msg is NULL and tbf will be set to dl_ass_tbf or ul_ass_tbf in the if (!msg) {} case below. continue; } pdch->next_ctrl_prio += 1; pdch->next_ctrl_prio %= 3; break; } if (!msg) { /* * If one of these is left, the response (CONTROL ACK) from the * MS will kill the current TBF, only one of them can be * non-NULL */ if (dl_ass_tbf) { tbf = dl_ass_tbf; msg = dl_ass_tbf->create_dl_ass(fn, ts); } else if (ul_ass_tbf) { tbf = ul_ass_tbf; msg = ul_ass_tbf->create_ul_ass(fn, ts); } } At this point, tbf may be NULL, either from 'if (!tbf) continue;' in the last iteration, or because dl_ass_tbf or ul_ass_tbf were NULL. Below code assumes that tbf is non-NULL and will segfault. Add 'if (!tbf) return NULL' here? /* any message */ if (msg) { tbf->rotate_in_list(); LOGP(DRLCMACSCHED, LOGL_DEBUG, "Scheduling control " "message at RTS for %s (TRX=%d, TS=%d)\n", tbf_name(tbf), trx, ts); /* Updates the dl ctrl msg counter for ms */ tbf->ms()->update_dl_ctrl_msg(); return msg; } /* schedule PACKET PAGING REQUEST */ msg = pdch->packet_paging_request(); if (msg) { LOGP(DRLCMACSCHED, LOGL_DEBUG, "Scheduling paging request " "message at RTS for (TRX=%d, TS=%d)\n", trx, ts); /* Updates the dl ctrl msg counter for ms */ tbf->ms()->update_dl_ctrl_msg(); return msg; } return NULL; } @osmo-pcu tbf folks, please fix this potential segmentation fault ASAP. Thanks! ~N -- - Neels Hofmeyr <nhofmeyr(a)sysmocom.de> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschäftsführer / Managing Directors: Harald Welte

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enum egprs_puncturing_values
by Neels Hofmeyr 16 Dec '16

16 Dec '16

Today I looked at enum egprs_puncturing_values by coincidence: /* * Valid puncturing scheme values * TS 44.060 10.4.8a.3.1, 10.4.8a.2.1, 10.4.8a.1.1 */ enum egprs_puncturing_values { EGPRS_PS_1, EGPRS_PS_2, EGPRS_PS_3, EGPRS_PS_INVALID, }; I notice that TS 44.060 10.4.8a.3.1 defines further items besides PS_1, 2 and 3, and that our EGPRS_PS_INVALID occupies the value the spec defines as "MCS-3/P1". I believe that this is rather unfortunate. [[[ Table 10.4.8a.3.1: Coding and Puncturing Scheme indicator field for Header type 3 bits 4321 First block CPS ---------------------------- 0000 MCS-4/P1 0001 MCS-4/P2 0010 MCS-4/P3 0011 MCS-3/P1 0100 MCS-3/P2 0101 MCS-3/P3 0110 MCS-3/P1 with padding (MCS-8 retransmission) 0111 MCS-3/P2 with padding (MCS-8 retransmission) 1000 MCS-3/P3 with padding (MCS-8 retransmission) 1001 MCS-2/P1 1010 MCS-2/P2 1011 MCS-1/P1 1100 MCS-1/P2 NOTE: All the other values are reserved for future use The bit numbering is relative to the field position. ]]] I would prefer EGPRS_PS_INVALID=-1 (i.e. outside the spec's value range) and the other enum values named appropriately, like EGPRS_MSC4_P1, so that our enum actually reflects the spec as advertised. Is there something I'm missing? These enum values were added in: commit 7a05b039c835868eff34308d861edfeb28d1763b Author: Aravind Sirsikar <arvind.sirsikar(a)radisys.com> Date: Wed Mar 23 18:29:45 2016 +0530 Thanks, ~N -- - Neels Hofmeyr <nhofmeyr(a)sysmocom.de> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschäftsführer / Managing Directors: Harald Welte

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comments on enum egprs_puncturing_values and gprs_rlc_mcs_cps()
by Neels Hofmeyr 16 Dec '16

16 Dec '16

Hi, in the wake of https://gerrit.osmocom.org/1411 I have some more comments on the code that seem to large for the gerrit edit field. I said in that patch comment that gprs_rlc_mcs_cps() must check that it isn't using INVALID enum values in its bitfield calculations. Furthermore: The bit fields are obtained by modulo calculation on enum values. This seems unnecessarily complex and error prone, it is hard to figure out for a reader. The relation is quite direct though, e.g. for EGPRS_MAX_PS_NUM_2 it means that PS_1 and PS_3 mean + 0, PS_2 means + 1. I wish that were easier to see. It would be good to prepare that above the switch() and use it below instead of duplicating the same calculation numerous times. Thirdly, for enum egprs_puncturing_values, the comment refers to TS 44.060 10.4.8a.3.1, 10.4.8a.2.1, 10.4.8a.1.1. When reading the first time, I saw table 10.4.8a.3.1 reflecting the names found in the table: PS1, PS2 and PS3. And it appeared that there are values missing. Typically, when we place a spec reference on an enum in Osmocom code, it means that this enum *exactly* represents the given table. This enum, however, is "merely" an internal indicator, later translated into the table's bit values. The enum definitions should have a comment sort of like "Puncturing scheme values. See gprs_rlc_mcs_cps()" without TS table references, and TS refs should be with that function. It's also not helpful to place references to two more tables in the comment: the reader is left guessing what the exact relation is. If more than one TS table is involved, the comment should explain the relation. Cosmetic: the switch() statement in that function has line breaking that doesn't match Osmocom coding style, making it even harder to read. These are things we missed when accepting these changes. It would be nice to get them fixed at some point. Thanks! ~N -- - Neels Hofmeyr <nhofmeyr(a)sysmocom.de> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschäftsführer / Managing Directors: Harald Welte

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RFC: OsmoDevCon 2017 planning
by Harald Welte 10 Dec '16

10 Dec '16

Dear Osmocom Community, [please respect the Reply-To and post all follow-up discussion to this to openbsc(a)lists.osmocom.org, so we avoid having long threads cross-posted to several mailing lists.] >From 2012 to 2016 we were running a series of small, invitation-only Osmocom Developer Conferences. Access was intentionally restricted to those community members who have demonstrated an existing track record of contribution to any of the projects under the Osmocom umbrella. This format of a small, tightly knit group of about 20 people has been successful over the years, and I have received a lot of positive feedback from past participants. On the other hand, the Osmocom project has grown in scope and diversity, and some of those projects don't have all that much relationship to each other - except being started by people from within the same group. There's the cellular communications (GSM/GPRS/EDGE/UMTS and hopefully at some point LTE) protocols which is attracting a lot of professional users. And then there's pure community projects like rtl-sdr, OsmocomBB, OsmocomGMR and many other efforts. Particularly the cellular infrastructure projects (OsmoBTS, OsmoPCU, OsmoBTS, OsmoNITB, OsmoSGSN, OpenGGSN, OsmoIuh & co) are somehow "standing out" of the othe projects in the context of having a wider user bsae, and in that user base also primarily commercial users. So I'd like to start a discussion on how to possibly change the event format to accomodate the various interests and parties. I definitely don't want to loose the "annual meeting of old friends" atmosphere, while at the same time also opening up to other interested parties. One idea would be to keep OsmoDevCon as-is and have a separate event where non-contributing/developing users / sysadmins / system integrators could also be attending. Another idea would be to split into a 'user day' and 'developer days' format. This is something the netfilter developer workshops have been using for many years, and from my limited insight quite successfully so. The "user day" is more like a traditional tech conference, with a large auditorium and talks oriented towards users / sysadmins / integrators of the software. The "developer days" are the invitation-only part, for known contributing developers only, similar to what we have at OsmoDevCon. Having both events (or both parts of an event) back-to-back has the advantage that a large number of potential speakers for the 'user day' are already present, and they don't have to travel yet another time. One could even structure it further and say we have one user day, one public 'Osmocom cellular developer day' and then the closed 'OsmoDevCon classic', maybe reduced from 4 days to 3 or even 2 days only? What is the general opinion about this? Are there people lurking on this list who would be interested in attending a public 'user day' or even 'developer day' about the Osmocom cellular projects, with presentations and workshops around topics such as running Osmocom based cellular networks? In terms of when/where, I would suggest to keep the tradition of April in Berlin/Germany. But I'm of course very happy if somebody wants to host it some place else... Regards, and looking forward to meeting you [again] in 2017, Harald -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

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P*CH activation
by Max 02 Nov '16

02 Nov '16

HI. Pardon the cross-posting, I'm not sure where this question really belongs. I've been trying to wrap my head around how PDTCH/PACCH/PTCCH activation works. In osmo-bts-sysmo/oml.c there is pdtch_sapis[] which defines what got to be activated both in DL and UL directions. Right now it's PDTCH (UL & DL), PTCCH (DL) and PRACH. Note that PACCH (DL) and PTCCH (UL) are commented out. Yet I see code dealing with PACCH in osmo-pcu and corresponding log messages. So the question is - how does this works? The PACCH seems to be used so it's somehow activated but apparently not the same way as PDTCH. -- Max Suraev <msuraev(a)sysmocom.de> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschaeftsfuehrer / Managing Director: Harald Welte

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Load balancing issue on Multi-TRX configuration
by Aravind Sirsikar 31 Oct '16

31 Oct '16

Hello All, We are testing GPRS/EGPRS functionality in Multi-TRX(2 TRX) configuration for 2MS and we observed that both the MS are always assigned resources in TRX0. It seems like there is no load balancing done Across the TRXs. Similar issue "Bug #1775 LC15: No PDCH allocation across two TRX" is raised on Multi-TRX and its status is "In Progress". Please let us know if any updates on this issue. Thanks and Regards, Aravind Sirsikar

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Profiling data of decoding EPDAN compressed bitmap
by Prasad Kaup 29 Oct '16

29 Oct '16

Hello All, We have executed profiling test of two versions of algorithm for decoding compressed bitmap of EPDAN. >From the results , we see that performance is better in Tree based decoding (Version2 as given below ) Version 1: Bitmap based decoding as present in current master branch ( Function name osmo_t4_decode ) Version 2: Tree based decoding ( Function name decompress_crbb , as proposed in patch "Decompress the CRBB bitmap using tree based approach"<http://lists.osmocom.org/pipermail/osmocom-net-gprs/2016-March/000525.html> ) A sample bitmap taken from a real mobile log is used for the test. Host execution: Time taken to decode (micro seconds) Version 1: (Bitmap based decoding) : MIN -17 MAX -19 AVERAGE -17.9 Version 2 (tree based decoding): MIN -4 MAX -13 AVERAGE - 5.2 Target execution: Time taken to decode (micro seconds) Version 1: (Bitmap based decoding) : MIN -277 MAX -583 AVERAGE - 353 Version 2 (tree based decoding): MIN -67 MAX -86 AVERAGE - 69.8 Regards Prasad

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GTP-U support for upstream Linux
by Ashish Kurian 29 Oct '16

29 Oct '16

Dear Developers, I have a question for you. As you might be knowing. there is a patch now available for OVS for GTP-U support. When the developers of the patch submitted it to add to the main branch of OVS, the OVS developers told the following. It doesn't look like upstream Linux has a GTP implementation. Because our usual workflow is to get code upstream first, you should start by submitting the kernel patches against net-next when that tree is open (I don't follow netdev, so I have no idea when that is). Then, once the GTP code is upstream, we can get it into OVS here. So, is the upstream Linux having support for GTP now? I am asking this because I am not certain about what upstream Linux means. If you say that upstream Linux has support for GTP-U, then I can ask the patch developers to port it for the latest version of OVS and add it to the main branch. Best Regards, Ashish Kurian

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Load balancing issue on Multi-TRX configuration
by Mrinal Mishra 20 Oct '16

20 Oct '16

Hello All, We are testing GPRS/EGPRS functionality in Multi-TRX(2 TRX) configuration for 2MS and we observed that both the MS are always assigned resources in TRX0. It seems like there is no load balancing done Across the TRXs. Similar issue "Bug #1775 LC15: No PDCH allocation across two TRX" is raised on Multi-TRX and its status is "In Progress". Please let us know if any updates on this issue. Thanks and Regards, Mrinal

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OpenGGSN IPv6 support
by groos＠xiplink.com 11 Oct '16

11 Oct '16

Hi All I have added IPv6 support to OpenGGSN and if anybody is interested I will gladly make my patch available. It definitely needs more testing and perhaps a bit of cleanup, but currently it can do 4-in-4, 6-in-4, 4-in-6 and 6-in-6. Gerrie

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[libgtpnl]add README.md file for build guide
by junpei yoshino 07 Oct '16

07 Oct '16

Hello I write build guide. README.md | 11 +++++++++++ 1 file changed, 11 insertions(+) create mode 100644 README.md diff --git a/README.md b/README.md new file mode 100644 index 0000000..c6718d2 --- /dev/null +++ b/README.md @@ -0,0 +1,11 @@ +# How to build + +``` +$ git clone git://git.osmocom.org/libgtpnl +$ cd libgtpnl +$ autoreconf -fi +$ cd tools +$ make gtp-tunnel +$ make gtp-link +``` + Best Regards, Junpei Yoshino -- junpei.yoshino(a)gmail.com

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OpenGGSN on live networks
by Bjørn Remseth 06 Oct '16

06 Oct '16

Hi I’m Bjørn, I work for Telenor Digital. We’re running a live experimental network (called “loltel” :-) that is technically operating as a full stack MVNO (mobile virtual network operator), renting network access from Telenor Norway. It’s mostly but not exclusively based on open source components. When we started up about two years ago we considered using OpenGGSN, but couldn’t figure out how to get it into an operational state and we couldn’t find anyone to help us, so we chose a commercial vendor instead. But today we’re again thinking of using OpenGGSN for an experiment, possibly in our live network. Are there anyone on this list with experiences either with running it in a live network, or with thoughts about how to do it / what would be necessary to get the job done? We’d love to have a discussion with you. Hope to hear from you soon. Best wishes Bjørn -- Bjørn Remseth --- Senior Software Engineer (+47) 47900184 | rmz(a)comoyo.com <mailto:ane@comoyo.com> | www.comoyo.com <http://www.comoyo.com/>

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openggsn patches now via gerrit
by Neels Hofmeyr 06 Oct '16

06 Oct '16

Hi all, OpenGGSN has moved to gerrit today. Patch submissions shall go there now, no longer to this mailing list. ~Neels -- - Neels Hofmeyr <nhofmeyr(a)sysmocom.de> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschäftsführer / Managing Directors: Harald Welte

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Installation error
by Ashish Kurian 06 Oct '16

06 Oct '16

Hi All, I downloaded the tar ball release libgtpnl-1.0.1.tar.gz and un tared it. Then I tried to build and install the package. But the command sudo ./configure is giving me the following error. configure: error: cannot find install-sh, install.sh, or shtool in build-aux "."/build-aux Do you know what could be the reason for this error? Best Regards, Ashish Kurian

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Re: Dropping packet from invalid source address
by Holger Freyther 06 Oct '16

06 Oct '16

> On 06 Oct 2016, at 09:01, Peter Lithner <plithner(a)yahoo.com> wrote: > > Hello Holger, > > I can see packets now, after creating a PDP and running tcpdump on tun0. However, the ICMP requests I send are not GTP encapsulated as I would have expected, and I can only see the "downlink" data (the ping requests, and not the replies). The ping is successful though, so the replies are sent some way. Let's say tun1 is the SGSN emu device and you have a ICMP Request in it. The kernel will tell the sgsnemu process that new data is present and the sgsnemu will then wrap the data with GTP-u and send it to the GGSN. So you should be able to see the wrapped data on the loopback device. > And like I mentioned before, I can not force delays in packet delivery by temporarily pausing the GGSN with ctrl-z. > > What I did was, exactly what you proposed. I used your config, and you command lines (with the only exception that I created to virtual interfaces instead of using 127.0.0.1 and 127.0.0.2. I tried that as well though, and behaviour was the same. > > One thing that looks a bit odd, is that when I run tcpdump on tun0 (ggsn tun interface) and run ping, I can only see the "downlink" packets. That is to say, I only see the Ping requests and not the responses. The attachment shows this. > The setup once again: > Ubuntu 16.04.01 > ggsn installed with apt-get > ggsn.cfg: > root@ip-10-7-0-240:/home/ubuntu# cat ggsn.conf > listen 192.168.1.2 > logfile /tmp/foo > loglevel DEBUG > net 10.10.10.1/24 > pcodns1 8.8.8.8 > > ggsn command line: > ggsn -c ggsn.conf -f > > sgsnemu command line: > sgsnemu --listen 192.168.1.3 --remote 192.168.1.2 --apn internet --createif > > capture: > tcpdump -i tun0 -w tun0.pcap > ping: > ping -I tun1 10.10.10.1 > So if you trace on eth0 as well you should see ICMP Echo req and GTP+U ICMP echo req. As you trace on tun0 the GGSN has received GTP-u and wrote it into tun0. Now the kernel decides not to respond. E.g. maybe your cloud image has some kind of firewall, you could try to disable the rp_filter on tun0, etc.

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Re: Dropping packet from invalid source address
by Holger Freyther 05 Oct '16

05 Oct '16

> On 05 Oct 2016, at 18:01, Peter Lithner <plithner(a)yahoo.com> wrote: > >> Dear Peter, > Peter: Did you mean ggsn on 127.0.0.2 and client on 127.0.0.1? yes. > >> While sgsnemu is running a new interface will be created (e.g. tun1 due the --createif route). Can you check >which netmask is being set there? E.g. tun_addroute is called by the sgsnemu and it might capture more than >you wanted? And in that case filter on tcpdump -i tun1 as well. > > Peter: The thing is, that I do not see any tun1 interface (only the ton0 which is created when i start ggsn). This was what I meant in my original post. > > Anyway, I used your config, and in the log file I see this: > <0002> ggsn.c:283 Set file log level to DEBUG > <0002> ggsn.c:492 gtpclient: Initialising GTP tunnel > <000c> gtp.c:700 GTP: gtp_newgsn() started > <000c> gtp.c:661 State information file (/var/lib/ggsn/gsn_restart) not found. Creating new file. > <000c> gtp.c:682 fopen(path=/var/lib/ggsn/gsn_restart, mode=w) failed: Error = No such file or directory > <0002> ggsn.c:510 Creating tun interface > <0002> ggsn.c:516 Setting tun IP address > > I'm probably just missing some stupid/obvious thing in my setup... with tcpdumo you should really see this packet and what kind of message it is. I just tried the following in Debian 8.0 VM with the config I had posted: GGSN: sudo ./ggsn/ggsn -c ./../../ggsn.conf -f SGSN: sudo ./sgsnemu/sgsnemu -l 127.0.0.1 -r 127.0.0.2 -a "foo" --createif Using default DNS server Local IP address is: 127.0.0.1 (127.0.0.1) Remote IP address is: 127.0.0.2 (127.0.0.2) IMSI is: 240010123456789 (0xf987654321010042) Using NSAPI: 0 Using GTP version: 1 Using APN: foo Using selection mode: 1 Using MSISDN: 46702123456 Initialising GTP library <000c> gtp.c:701 GTP: gtp_newgsn() started Setting up interface Done initialising GTP library Sending off echo request Setting up PDP context #0 Waiting for response from ggsn........ Received echo response Received create PDP context response. IP address: 10.23.42.2 After network config: tun0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 inet addr:10.23.42.1 P-t-P:10.23.42.1 Mask:255.255.255.0 UP POINTOPOINT RUNNING MTU:1500 Metric:1 RX packets:3 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:252 (252.0 B) TX bytes:0 (0.0 B) tun1 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 inet addr:10.23.42.2 P-t-P:10.23.42.2 Mask:255.255.255.255 UP POINTOPOINT RUNNING MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:3 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:0 (0.0 B) TX bytes:252 (252.0 B) So tun0 has been allocated by the GGSN and tun1 by the SGSN ping -I tun1 10.23.42.1 PING 10.23.42.1 (10.23.42.1) from 10.23.42.2 tun1: 56(84) bytes of data. 64 bytes from 10.23.42.1: icmp_seq=1 ttl=64 time=0.223 ms 64 bytes from 10.23.42.1: icmp_seq=2 ttl=64 time=0.132 ms 64 bytes from 10.23.42.1: icmp_seq=3 ttl=64 time=0.134 ms 64 bytes from 10.23.42.1: icmp_seq=4 ttl=64 time=0.123 ms 64 bytes from 10.23.42.1: icmp_seq=5 ttl=64 time=8914 ms (I used CTRL+Z on the ggsn to see that there are actually delays). Can you try to repeat that? holger

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Dropping packet from invalid source address
by Peter Lithner 05 Oct '16

05 Oct '16

Hi I'm trying out openGGSN, currently running it on an Ubuntu 16.04 VM in Amazon. The reason I'm doing this is part of an evaluation I'm helping out with for a customer in the Telco-industry. I have been able to install, and run ggsn and sgsnemu to the point of sending the ECHO and creating the PDP-C (see attachment). However, I can't see that a network interface is created after the PDP-C has been accepted. According to the README on https://github.com/osmobuntu/openggsn that should happen: "After this it will attempt to establish a pdp context. If successful it will create a local interface and set up routing." Anyway, I have probably missed something in the setup. If you have any suggestions, that would be highly appreciated! What I did so far is: Install sudo apt-get update sudo apt-get install openggsn Create "virtual" interfaces (since I'm running everything on the same machine. Not sure if this is the right way to do it though) ifconfig eth0:0 192.168.1.2 netmask 255.255.255.0 up ifconfig eth0:1 192.168.1.3 netmask 255.255.255.0 up I also did the following steps, but I'm not sure exactly what they do... pardon my ignorance! 1. Add the following line to /etc/modules.conf: alias char-major-10-200 tun 2. depmod -a Start GGSN ggsn -c ggsn.conf --fg -l 192.168.1.2 --net 192.168.0.0/24 --dynip 192.168.0.0/24 After this I can see the new tun0 tun0: flags=81<UP,POINTOPOINT,RUNNING> mtu 1500 inet 192.168.0.1 netmask 255.255.255.0 destination 192.168.0.1 inet6 fe80::9ea3:6876:c4ce:fc96 prefixlen 64 scopeid 0x20<link> unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 500 (UNSPEC) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 7 bytes 448 (448.0 B) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 send ECHO (successfully) sgsnemu --listen 192.168.1.3 --remote 192.168.1.2 --dns 10.20.38.51 --timelimit 10 --contexts 0 Send ECHO + Create PDP-C sgsnemu --listen 192.168.1.3 --remote 192.168.1.2 --dns 10.20.38.51 --timelimit 10 --contexts 1 --apn internet --imsi 240011234567890 --msisdn 46702123456 --createif --defaultroute Which outputs the following: Using DNS server: 10.20.38.51 (10.20.38.51) Local IP address is: 192.168.1.3 (192.168.1.3) Remote IP address is: 192.168.1.2 (192.168.1.2) IMSI is: 240011234567890 (0xf098765432110042) Using NSAPI: 0 Using GTP version: 1 Using APN: internet Using selection mode: 1 Using MSISDN: 46702123456 Initialising GTP library <000c> gtp.c:700 GTP: gtp_newgsn() started After printing this line, sgsnemu stays very silent for 30-ish seconds, after which it prints (all in one go): Setting up interface Done initialising GTP library Sending off echo request Setting up PDP context #0 Waiting for response from ggsn........ Received echo response Received create PDP context response. IP address: 192.168.0.2 Dropping packet from invalid source address: 0.0.0.0 Dropping packet from invalid source address: 0.0.0.0 Dropping packet from invalid source address: 0.0.0.0 Dropping packet from invalid source address: 10.7.0.240 Dropping packet from invalid source address: 10.7.0.240 Dropping packet from invalid source address: 0.0.0.0 Dropping packet from invalid source address: 10.7.0.240 Dropping packet from invalid source address: 0.0.0.0 Dropping packet from invalid source address: 10.7.0.240 Dropping packet from invalid source address: 10.7.0.240 Dropping packet from invalid source address: 0.0.0.0 Dropping packet from invalid source address: 10.7.0.240 Dropping packet from invalid source address: 0.0.0.0 Dropping packet from invalid source address: 10.7.0.240 Disconnecting PDP context #0 Received delete PDP context response. Cause value: 128 Where 10.7.0.240 is the ip address of eth0 Once again, if you have any suggestions, I'm all ears! Thanks in advance! /peter

2 1

[PATCH 0/2] OpenGGSN fixes for gsn_restart file path composition
by Neels Hofmeyr 05 Oct '16

05 Oct '16

Neels Hofmeyr (2): fix gsn_restart file buffer overflow and missing path sep gsn_restart file: set umask back to original after write failure gtp/gtp.c | 20 +++++++++----------- gtp/gtp.h | 1 - 2 files changed, 9 insertions(+), 12 deletions(-) -- 2.1.4

3 6

sgsn segfault wegen sndcp / v42.bis commits?
by Neels Hofmeyr 28 Sep '16

28 Sep '16

I have a reproducable segfault in the SGSN, bisecting to below commit: (To bisect, I rearranged the commits, see branches neels/sndcp_bisect and neels/sndcp_bisect_bad in openbsc) ▶ git bisect bad 97991d56800fdc913e6fdf95cac68d598f66b498 is the first bad commit commit 97991d56800fdc913e6fdf95cac68d598f66b498 Author: Philipp <pmaier(a)sysmocom.de> Date: Fri Aug 26 17:00:21 2016 +0200 SNDCP: add RFC1144 header compression functionality - Add module to handle compression entities - Add module to control header compression - Introduce VTY commands for heade compression configuration - Add changes in sndcp and llc to integrate header compression Change-Id: Ia00260dc09978844c2865957b4d43000b78b5e43 :040000 040000 de76aa0ab5dc11ad81666f9f4c933544eedcd4f1 c199c47cd19b5a1a334020a598dba3e0be922fe5 M openbsc Reproduce: Have a 3G UE try to establish a PDP context. (basically just let it subscribe to the network with mobile data enabled.) Yes, this is on the sysmocom/iu branch. Note: the N-DATA.ind shows the correct hexdump and data length, but the backtrace shows that two lines below that a function is passed the values ctx=0x6cf9d0, data=0x0, len=140737316187968) at ranap_common_cn.c:310 So it looks like a stack corruption caused somewhere completely different. It's very reproducable though, even after rearranging things with other library states I always get the exact same place segfaulting: 20160927195152039 <001a> iu.c:755 N-DATA.ind(0, 60 00 00 1d 00 00 01 00 34 40 16 00 00 01 00 33 40 0f 60 28 dc 35 00 01 0a 09 01 0b 00 00 00 00 01 , len 33) 20160927195152039 <001a> iu.c:757 1msg 0x6d07a8 len 33 20160927195152039 <001a> iu.c:767 2msg 0x6d07a8 len 33 <RANAP_RAB-SetupOrModifiedList> <raB-SetupOrModifiedList-ies> <RANAP_IE> <id>51</id> <criticality><ignore/></criticality> <value>60 28 DC 35 00 01 0A 09 01 0B 00 00 00 00 01</value> </RANAP_IE> </raB-SetupOrModifiedList-ies> </RANAP_RAB-SetupOrModifiedList> 20160927195152039 <001a> iu.c:460 handle_co(dir=4, proc=0) 20160927195152039 <001a> iu.c:433 RAB Asignment Response:<RANAP_RAB-SetupOrModifiedItem> <rAB-ID> 00000101 </rAB-ID> <transportLayerAddress> 00110101000000000000000100001010000010010000000100001011 </transportLayerAddress> <iuTransportAssociation> <gTP-TEI>00 00 00 01</gTP-TEI> </iuTransportAssociation> </RANAP_RAB-SetupOrModifiedItem> Setup: (5/35 00 01 0a 09 01 0b )20160927195152039 <001a> sgsn_libgtp.c:483 Updating TEID on RNC side from 0x00000001 to 0x00000001 20160927195152039 <000f> gprs_gmm.c:2031 PDP(901990000000038/0) <- ACTIVATE PDP CONTEXT ACK 20160927195152039 <001a> iu.c:398 Transmitting L3 Message as RANAP DT (SUA link 0x6ce280 conn_id 0) <RANAP_IE> <id>16</id> <criticality><ignore/></criticality> <value> 31 8A 42 03 0E 23 62 1F 72 99 3F 3F 11 43 FF FF 00 00 00 00 2B 06 01 21 0A 17 2A 02 27 14 80 80 21 10 02 00 00 10 81 06 08 08 08 08 83 06 00 00 00 00 </value> </RANAP_IE> <RANAP_IE> <id>59</id> <criticality><ignore/></criticality> <value>00</value> </RANAP_IE> 20160927195152039 <001b> sua.c:591 Received SCCP User Primitive (N-DATArequest) 20160927195152039 <001b> sua.c:245 sua_link_send(01 00 08 08 00 00 00 60 00 06 00 08 00 00 00 00 01 05 00 08 00 00 03 e8 01 0b 00 46 00 14 00 3e 00 00 02 00 10 40 32 31 8a 42 03 0e 23 62 1f 72 99 3f 3f 11 43 ff ff 00 00 00 00 2b 06 01 21 0a 17 2a 02 27 14 80 80 21 10 02 00 00 10 81 06 08 08 08 08 83 06 00 00 00 00 00 3b 40 01 00 00 00 ) Program received signal SIGSEGV, Segmentation fault. sndcp_sn_xid_req (lle=0x340, nsapi=5 '\005') at gprs_sndcp.c:926 926 gprs_sndcp_comp_free(lle->llme->comp.proto); (gdb) bt #0 sndcp_sn_xid_req (lle=0x340, nsapi=5 '\005') at gprs_sndcp.c:926 #1 0x0000000000415681 in send_act_pdp_cont_acc (pctx=0x6d0290) at sgsn_libgtp.c:346 #2 0x0000000000416ba6 in sgsn_ranap_rab_ass_resp (ctx=0x340, setup_ies=0x0) at sgsn_libgtp.c:492 #3 0x0000000000422e28 in ranap_handle_co_rab_ass_resp (ies=<optimized out>, ies=<optimized out>, ctx=<optimized out>) at iu.c:445 #4 cn_ranap_handle_co (ctx=0x6cf9d0, message=0x0) at iu.c:510 #5 0x00007ffff5909f60 in ranap_cn_rx_co (cb=0x422890 <cn_ranap_handle_co>, ctx=0x6cf9d0, data=0x0, len=140737316187968) at ranap_common_cn.c:310 #6 0x0000000000423d1c in sccp_sap_up (oph=0x6d06a8, link=0x6ce280) at iu.c:768 #7 0x00007ffff5be6c7f in sua_rx_codt (xua=<optimized out>, link=<optimized out>) at sua.c:1164 #8 sua_rx_co (msg=<optimized out>, xua=<optimized out>, link=<optimized out>) at sua.c:1196 #9 sua_rx_msg (link=0x0, msg=0x5) at sua.c:1232 #10 0x00007ffff5be7042 in sua_srv_conn_cb (conn=0x6cf300) at sua.c:1360 #11 0x00007ffff4c4c881 in osmo_stream_srv_read (conn=0x6ce1b0) at stream.c:512 #12 osmo_stream_srv_cb (ofd=<optimized out>, what=1) at stream.c:563 #13 0x00007ffff79bab82 in osmo_fd_disp_fds (_eset=0x7fffffffe360, _wset=0x7fffffffe2e0, _rset=0x7fffffffe260) at select.c:149 #14 osmo_select_main (polling=0) at select.c:191 #15 0x0000000000404ee2 in main (argc=3, argv=0x0) at sgsn_main.c:448 (gdb) How do we do this? Revert Philipps commits for now? I need to go now, but next I'll take a short look whether I can reproduce with other hardware / spot a bug anywhere. No idea yet whether it only happens for 3G. ~Neels -- - Neels Hofmeyr <nhofmeyr(a)sysmocom.de> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschäftsführer / Managing Directors: Harald Welte

2 2

RE: GTP-u Kernel module
by Ferrer Guasch Vicent 26 Sep '16

26 Sep '16

> On my side, I have no plans to add what you need, so patches are very > welcome. I can help providing indications on how to get things done if you > have time to work on this. So I would suggest you fire at one front at a time. > > I would start by adding the assymmetric tunnel ID allocation that you need, > which should not be too complicated to add. You have to extend the netlink > interface that we have on gtp to support this. > Thanks Pablo for the kind response, I will study the docs and the gtp module and try to propose some patches. Rgds, Vicent

1 0

GTP-u Kernel module
by Ferrer Guasch Vicent 25 Sep '16

25 Sep '16

Hi! We are affiliated with Aalto University and conducting research in the area of mobile networks. We have been improving Amit Chawre's project NwEPC<https://sourceforge.net/projects/nwepc/>. I saw your implementation of the GTP-U kernel module and I started to check If I could integrate it to this project. I couldn't find any roadmap of the GTP-U in your website. Do you have any future plans for it? I am interested in the following points: - Creation, modification and removal of unidirectional tunnels, opposed to the creation of both tunnels without possibility of modification. In the real EPC nodes, the tunnels are never created at the same time. Also they can be removed due to the UE moving to Idle state (i.e. GTP downlink between the eNB and the S-GW). - Possibility to send End Marker and direct and indirect forwarding tunnels. - The S-GW receive from a GTP endpoint and sends it to a different one. What mechanisms do you have in mind to do this? - Support of multiple EPS bearers for the same UE. - Policy control, enforcement and statistics reporting (probably integrating it with netfilter). How can I contribute to this project. Should I work on the whole kernel tree? I have no experience with kernel module development. If you want I could work on some API modification proposals and designs. Kind Regards, Vicent Ferrer Guasch PhD candidate Networking Technology Department of Communications and Networking Aalto University

4 4

OVS GTP-U patch
by Ashish Kurian 23 Sep '16

23 Sep '16

Dear Members, I have applied the GTP-U patch for OVS which was available online and it was applied successfully. But now I realised that a GTP-U kernel space implementation is available from you. I am not sure of the interplay of OVS and linux kernel. The patch for the OVS works in the kernel space and if I want to use the patched OVS with your linux kernel patch, should I do some modifications to the patch? Best Regards, Ashish Kurian

2 1

High level summary of the performance activity done by Radisys using NuRAN 1.0 platform
by Aravind Sirsikar 16 Sep '16

16 Sep '16

Hi All, Below is the high level summary of the performance activity carried on NuRAN 1.0 board with Commercial UE and Dongle under lab conditions. * Single MS test 1. UL Test a. Performance test for long duration (24 hours) for EGPRS Uplink (MCS9) with stable data rate of 45.2kbps 2. DL Test b. Performance test for long duration (24 hours) for EGPRS downlink(MCS9) with stable throughput of 223kbps with all slots configured for single UE c. Performance test for all EGPRS MCS(MCS1-MCS9) with stable expected throughput d. Stress test for short duration with more than theoretical max data rate (MCS9) without any breakage in the system. e. Stress test for short duration with signaling load (MCS8) without any breakage in the system. f. Speed test through speedtest.net downlink - 210kbps uplink - 40kbps * Multi MS test 3. DL Test a. Performance test for long duration (24 hours) for EGPRS downlink (4 UEs - MCS9) with a combined cell throughput of 223kbps. Following are the links to the issues raised in Redmine and related patch information which is merged in master 1. https://osmocom.org/issues/1811 a. https://git.osmocom.org/osmo-pcu/commit/?id=22a901905c9749b03fceccda4d550f3… b. https://git.osmocom.org/osmo-pcu/commit/?id=3463bd4adc1598462560ed84da837d0… 2. https://osmocom.org/issues/1808 a. https://git.osmocom.org/osmo-pcu/commit/?id=e26ee01d56b4c4c2da6abc6b649cb76… b. https://git.osmocom.org/osmo-pcu/commit/?id=8e70bb5bb4751e3a7f33b95b2994bff… c. https://git.osmocom.org/osmo-pcu/commit/?id=0ee31cfa381282d0d724fb36c48bae2… 3. https://osmocom.org/issues/1806 a. https://git.osmocom.org/osmo-pcu/commit/?id=a35c911a91ea7b6d8b017fd103c0d86… b. https://git.osmocom.org/osmo-pcu/commit/?id=7c7a86c080edd9c92778c941bbe484f… 4. https://osmocom.org/issues/1805 a. https://git.osmocom.org/osmo-pcu/commit/?id=9f5f008aedc910ff0ce18bf3f92b9b7… b. https://git.osmocom.org/osmo-pcu/commit/?id=024152683646f1b68c85de74f783b81… 5. https://osmocom.org/issues/1792 a. https://git.osmocom.org/osmo-pcu/commit/?id=e26ee01d56b4c4c2da6abc6b649cb76… Below issue in Redmine is still pending to be submitted to master. 1. https://osmocom.org/issues/1789 Relevant PCU configuration used is present at https://git.osmocom.org/radisys/osmo-pcu/commit/?h=radisys/egprs_integratio… Thanks, Aravind Sirsikar

1 0

[PATCH 1/3] Fix possible buffer overflow for gsn_restart file path
by Neels Hofmeyr 16 Sep '16

16 Sep '16

For strncat, to obtain n, one must not subtract the length of what is appended, but the length of what is already written from the buffer size. Verified with this little test program: #include <stdio.h> #include <string.h> int main() { char buf[20]; strncpy(buf, "123", 10); strncat(buf, "456789012345", 10 - strlen(buf)); printf("%s\n", buf); return 0; } It prints "1234567890". --- gtp/gtp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/gtp/gtp.c b/gtp/gtp.c index 12cb492..55a8ce4 100644 --- a/gtp/gtp.c +++ b/gtp/gtp.c @@ -650,7 +650,7 @@ static void log_restart(struct gsn_t *gsn) filename[NAMESIZE - 1] = 0; /* No null term. guarantee by strncpy */ strncpy(filename, gsn->statedir, NAMESIZE - 1); - strncat(filename, RESTART_FILE, NAMESIZE - 1 - sizeof(RESTART_FILE)); + strncat(filename, RESTART_FILE, NAMESIZE - 1 - strlen(filename)); i = umask(022); -- 2.1.4

2 5

[PATCH] gtp: Added 'Bearer control mode' information element from Release 7
by BJovke . 15 Sep '16

15 Sep '16

--- gtp/gtpie.c | 3 +++ gtp/gtpie.h | 1 + 2 files changed, 4 insertions(+) diff --git a/gtp/gtpie.c b/gtp/gtpie.c index a45df1c..c8db449 100644 --- a/gtp/gtpie.c +++ b/gtp/gtpie.c @@ -243,6 +243,7 @@ int gtpie_decaps(union gtpie_member *ie[], int version, void *pack, case GTPIE_RP_SMS: case GTPIE_RP: case GTPIE_MS_NOT_REACH: + case GTPIE_BCM: if (j < GTPIE_SIZE) { ie[j] = (union gtpie_member *)p; if (GTPIE_DEBUG) @@ -457,6 +458,7 @@ int gtpie_encaps(union gtpie_member *ie[], void *pack, unsigned *len) case GTPIE_RP_SMS: case GTPIE_RP: case GTPIE_MS_NOT_REACH: + case GTPIE_BCM: iesize = 2; break; case GTPIE_FL_DI: /* TV GTPIE types with value length 2 */ @@ -558,6 +560,7 @@ int gtpie_encaps2(union gtpie_member ie[], unsigned int size, case GTPIE_RP_SMS: case GTPIE_RP: case GTPIE_MS_NOT_REACH: + case GTPIE_BCM: iesize = 2; break; case GTPIE_PFI: /* TV GTPIE types with value length 2 */ diff --git a/gtp/gtpie.h b/gtp/gtpie.h index 340a76c..fb8598e 100644 --- a/gtp/gtpie.h +++ b/gtp/gtpie.h @@ -106,6 +106,7 @@ static __inline uint64_t hton64(uint64_t q) #define GTPIE_USER_LOC 152 /* User Location Information */ #define GTPIE_MS_TZ 153 /* MS Time Zone */ #define GTPIE_IMEI_SV 154 /* IMEI Software Version */ +#define GTPIE_BCM 184 /* Bearer control mode */ /* 239-250 Reserved for the GPRS charging protocol (see GTP' in GSM 12.15) */ #define GTPIE_CHARGING_ADDR 251 /* Charging Gateway Address */ /* 252-254 Reserved for the GPRS charging protocol (see GTP' in GSM 12.15) */ -- 2.8.2.windows.1

2 2

sgsnemu failing to create PDP context with Cisco GGSN
by BJovke . 15 Sep '16

15 Sep '16

Hello. sgsnemu cannot establish PDP context with latest Cisco GGSN. There is additional information element "Bearer control mode" sent by GGSN in create PDP context response message (attachment). This information element is not recognized by sgsnemu. Here are the changes in libgtp to support this information element: 9 gtp/gtpie.c @@ -243,7 +243,8 @@ int gtpie_decaps(union gtpie_member *ie[], int version, void *pack, case GTPIE_RP_SMS: case GTPIE_RP: case GTPIE_MS_NOT_REACH: - if (j < GTPIE_SIZE) { + case GTPIE_BCM: + if (j < GTPIE_SIZE) { ie[j] = (union gtpie_member *)p; if (GTPIE_DEBUG) printf @@ -457,7 +458,8 @@ int gtpie_encaps(union gtpie_member *ie[], void *pack, unsigned *len) case GTPIE_RP_SMS: case GTPIE_RP: case GTPIE_MS_NOT_REACH: - iesize = 2; + case GTPIE_BCM: + iesize = 2; break; case GTPIE_FL_DI: /* TV GTPIE types with value length 2 */ case GTPIE_FL_C: @@ -558,7 +560,8 @@ int gtpie_encaps2(union gtpie_member ie[], unsigned int size, case GTPIE_RP_SMS: case GTPIE_RP: case GTPIE_MS_NOT_REACH: - iesize = 2; + case GTPIE_BCM: + iesize = 2; break; case GTPIE_PFI: /* TV GTPIE types with value length 2 */ case GTPIE_CHARGING_C: 1 gtp/gtpie.h @@ -106,6 +106,7 @@ static __inline uint64_t hton64(uint64_t q) #define GTPIE_USER_LOC 152 /* User Location Information */ #define GTPIE_MS_TZ 153 /* MS Time Zone */ #define GTPIE_IMEI_SV 154 /* IMEI Software Version */ +#define GTPIE_BCM 184 /* Bearer control mode */ /* 239-250 Reserved for the GPRS charging protocol (see GTP' in GSM 12.15) */ #define GTPIE_CHARGING_ADDR 251 /* Charging Gateway Address */ /* 252-254 Reserved for the GPRS charging protocol (see GTP' in GSM 12.15) */ --

2 3

[osmo-pcu] Unit test execution is reporting as failed
by Aravind Sirsikar 12 Sep '16

12 Sep '16

Hi All, Unit test execution of current master of osmo-pcu(9bbe1600cc02e1b538380393edb1dcdabe9247a2<https://git.osmocom.org/osmo-pcu/commit/?id=9bbe1600cc02e1b538380393edb1dcd…>) is getting failed with below description regression tests 1: rlcmac ok 2: ts_alloc ok 3: tbf FAILED (testsuite.at:23) 4: edge ok 5: types ok 6: ms ok 7: llc ok 8: llist ok 9: codel ok ## ------------- ## ## Test results. ## ## ------------- ## ERROR: All 9 tests were run, 1 failed unexpectedly. ## -------------------------- ## ## testsuite.log was created. ## ## -------------------------- ## Possible Reason being TbfTest.err is not updated Thanks, Aravind Sirsikar

1 1

Regarding the status of gerrit Id 416
by Pravin Kumaravel Manoharan 12 Sep '16

12 Sep '16

Hi All, I have addressed all the comments raised. please let me know the status of https://gerrit.osmocom.org/#/c/416/22 Regards, Pravin Kumaravel M

1 0

osmo-pcu build error in master
by Holger Freyther 28 Aug '16

28 Aug '16

Hi, it looks like after the rebase done by gerrit something didn't compile anymore. Could someone please have a look at https://gerrit.osmocom.org/#/c/429/ and fix the fall-out in master? thank you holger

1 0

[PATCH][libgtpnl] I can't look tei by tools/gtp-tunnel.c in GTPv1
by junpei yoshino 25 Aug '16

25 Aug '16

Hello I can't look tei by gtp-tunnel in GTPv1. I write patch for libgtpnl. head version $./tools/gtp-tunnel add hoge v1 65535 65535 10.0.3.2 192.168.0.2 $./tools/gtp-tunnel list version 1 tei 0/0 ms_addr 10.0.3.2 sgsn_addr 192.168.0.2 fixed version $./tools/gtp-tunnel add hoge v1 65535 65535 10.0.3.2 192.168.0.2 $./tools/gtp-tunnel list version 1 tei 65535/65535 ms_addr 10.0.3.2 sgsn_addr 192.168.0.2 diff --git src/gtp-genl.c src/gtp-genl.c index 1e77e06..24a640d 100644 --- src/gtp-genl.c +++ src/gtp-genl.c @@ -119,7 +119,7 @@ static int genl_gtp_validate_cb(const struct nlattr *attr, void *data) const struct nlattr **tb = data; int type = mnl_attr_get_type(attr); - if (mnl_attr_type_valid(attr, CTRL_ATTR_MAX) < 0) + if (mnl_attr_type_valid(attr, GTPA_MAX) < 0) return MNL_CB_OK; switch(type) { -- junpei.yoshino(a)gmail.com

2 1

Re: [EGPRS] Performance results for EGPRS test in Radisys lab
by Saurabh Sharan 12 Aug '16

12 Aug '16

Hello Max, > What about MCS UL? Do you have some statistics which one has been used The uplink tests have been completed for all EGPRS coding scheme (MCS1 - 9) using the ping or TCP download. We have not conducted specific test for throughput estimation in uplink direction till now. Regards Saurabh

2 1

[PATCH 1/2] Remove unused function
by msuraev＠sysmocom.de 08 Aug '16

08 Aug '16

From: Max <msuraev(a)sysmocom.de> --- ggsn/ggsn.c | 1 - gtp/pdp.c | 11 ----------- gtp/pdp.h | 1 - 3 files changed, 13 deletions(-) diff --git a/ggsn/ggsn.c b/ggsn/ggsn.c index 7725016..6866901 100644 --- a/ggsn/ggsn.c +++ b/ggsn/ggsn.c @@ -154,7 +154,6 @@ int create_context_ind(struct pdp_t *pdp) pdp->eua.l = 0; /* TODO: Indicates dynamic IP */ - /* ulcpy(&pdp->qos_neg, &pdp->qos_req, sizeof(pdp->qos_req.v)); */ memcpy(pdp->qos_neg0, pdp->qos_req0, sizeof(pdp->qos_req0)); memcpy(&pdp->pco_neg, &pco, sizeof(pdp->pco_neg)); diff --git a/gtp/pdp.c b/gtp/pdp.c index f0d6adf..f297af9 100644 --- a/gtp/pdp.c +++ b/gtp/pdp.c @@ -370,14 +370,3 @@ void pdp_set_imsi_nsapi(struct pdp_t *pdp, uint64_t teid) pdp->imsi = teid & 0x0fffffffffffffffull; pdp->nsapi = (teid & 0xf000000000000000ull) >> 60; } - -int ulcpy(void *dst, void *src, size_t size) -{ - if (((struct ul255_t *)src)->l <= size) { - ((struct ul255_t *)dst)->l = ((struct ul255_t *)src)->l; - memcpy(((struct ul255_t *)dst)->v, ((struct ul255_t *)src)->v, - ((struct ul255_t *)dst)->l); - return 0; - } else - return EOF; -} diff --git a/gtp/pdp.h b/gtp/pdp.h index 57af8b3..217b1d6 100644 --- a/gtp/pdp.h +++ b/gtp/pdp.h @@ -252,6 +252,5 @@ int pdp_ipget(struct pdp_t **pdp, void* ipif, struct ul66_t *eua); int pdp_ntoeua(struct in_addr *src, struct ul66_t *eua); int pdp_euaton(struct ul66_t *eua, struct in_addr *dst); uint64_t pdp_gettid(uint64_t imsi, uint8_t nsapi); -int ulcpy(void *dst, void *src, size_t size); #endif /* !_PDP_H */ -- 2.9.2

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gerrit openggsn
by Max 08 Aug '16

08 Aug '16

Hi. I've noticed that OpenGGSN is not part of https://gerrit.osmocom.org/#/admin/projects/ Is there plan to move it to gerrit as well or shall I send patches to this list instead? -- Max Suraev <msuraev(a)sysmocom.de> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschaeftsfuehrer / Managing Director: Harald Welte

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[EGPRS] Performance results for EGPRS test in Radisys lab
by Saurabh Sharan 21 Jul '16

21 Jul '16

Hello, We have completed first phase of performance test on EGPRS using iperf tool for short duration runs (1 to 3 hours). Steady throughput of 215 to 223 kbps in Downlink has been achieved under lab conditions over the air test using one Huawei E398 dongle as UE. PCU was configured for 4 PDTCH allocation. Osmo-pcu is based on master branch plus Radisys code changes which are currently under Gerrit review. The execution of test was done on NuRAN 1.0 hardware. Below is a summary of test results Test type MCS DL Duration Throughput(kbps) Achieved Theoretical TCP MCS9 1hour 217 236.8 UDP MCS9 3hour 223 236.8 Regards Saurabh

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PDTCH and PTCCH activation
by Max 21 Jul '16

21 Jul '16

Hi all. I've noticed in osmo-bts logs several messages from L1: 238:<0006> oml.c:689 (bts=0,trx=0,ts=2,ss=0) MPH-ACTIVATE.conf (PDTCH TxDL) 243:<0006> oml.c:689 (bts=0,trx=0,ts=3,ss=0) MPH-ACTIVATE.conf (PDTCH TxDL) 246:<0006> oml.c:689 (bts=0,trx=0,ts=2,ss=0) MPH-ACTIVATE.conf (PDTCH RxUL) 251:<0006> oml.c:689 (bts=0,trx=0,ts=4,ss=0) MPH-ACTIVATE.conf (PDTCH TxDL) 254:<0006> oml.c:689 (bts=0,trx=0,ts=3,ss=0) MPH-ACTIVATE.conf (PDTCH RxUL) 260:<0006> oml.c:689 (bts=0,trx=0,ts=7,ss=0) MPH-ACTIVATE.conf (PDTCH TxDL) 263:<0006> oml.c:689 (bts=0,trx=0,ts=4,ss=0) MPH-ACTIVATE.conf (PDTCH RxUL) 274:<0006> oml.c:689 (bts=0,trx=0,ts=7,ss=0) MPH-ACTIVATE.conf (PDTCH RxUL) Similarly, there are messages related to PTCCH: 257:<0006> oml.c:689 (bts=0,trx=0,ts=2,ss=0) MPH-ACTIVATE.conf (PTCCH TxDL) 266:<0006> oml.c:689 (bts=0,trx=0,ts=3,ss=0) MPH-ACTIVATE.conf (PTCCH TxDL) 277:<0006> oml.c:689 (bts=0,trx=0,ts=4,ss=0) MPH-ACTIVATE.conf (PTCCH TxDL) 288:<0006> oml.c:689 (bts=0,trx=0,ts=7,ss=0) MPH-ACTIVATE.conf (PTCCH TxDL) Notice that while PDTCH is activated for both UL and DL, the PTCCH is only activated for DL. As far as I've understood continuous TA procedure I've got to have PTCCH activated in both directions. The problem is that I have troubles locating the code which triggers the activation above. There is l1if_connect_pdch() in osmo-pcu src/sysmo_l1_if.c but it uses GsmL1_PrimId_MphConnectReq while if I understood correctly GsmL1_PrimId_MphActivateReq is necessary for channel activation. There is mph_send_activate_req() in osmo-bts oml.c which uses it. It's called from lchan_act_compl_cb() via sapi_queue_send() which is also in mph_send_activate_req() - I have hard time understanding how this works at all. Do we have this documented somewhere? -- Max Suraev <msuraev(a)sysmocom.de> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschaeftsfuehrer / Managing Director: Harald Welte

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signal quality in osmo-pcu
by Max 21 Jul '16

21 Jul '16

Hi. While looking at http://projects.osmocom.org/issues/1616 I've noticed that there seems to be no particular function which get signal quality info from dsp. At least looking at code around ENABLE_DIRECT_PHY have not enlightened me so far. The question is - how exactly signal quality is obtained from dsp (on hw with direct dsp access) to osmo-pcu. There is clear difference between l1if_pdch_req() and pcu_tx_data_req() on TX path but what's the equivalent for RX? -- Max Suraev <msuraev(a)sysmocom.de> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschaeftsfuehrer / Managing Director: Harald Welte

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access bts from pcu's L1 code
by Max 15 Jul '16

15 Jul '16

Hi. While working on https://osmocom.org/issues/1531 I've found that I have to update BTS's configuration (see src/bts.cpp) from osmo-pcu L1 code (see src/osmo-bts-sysmo/sysmo_l1_hw.c). The problem is that the only thing I got in L1 is struct femtol1_hdl which have trx_no but that's about it. Is there a way to get pointer to BTS so I can call bts->set_ta() using trx_no? Or I shall somehow change interface for l1if_fd_cb() - that's where my function with new data is called from? -- Max Suraev <msuraev(a)sysmocom.de> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschaeftsfuehrer / Managing Director: Harald Welte

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Testcase + commit on EDGE patches
by Holger Freyther 12 Jul '16

12 Jul '16

Good Morning all, my real life distraction is mostly gone and I can be more active in developing and reviewing again. From my point of view Sysmocom and me have responded to all Gerrit reviews and we are waiting for the next iteration of the patchset. Before giving a high-level point of view of orders and dependencies I would like to say some words about testing. (Automatic Unit-)testing is crucial. Sometimes it is the easiest way to test a behavior, it allows to hit/test error paths but are hit less frequently. Combined with regular execution of the tests and forbidding to merge code that breaks tests, features that worked once and have a good test will continue to work. It is the key for being able to move forward quickly. For many patches I reviewed test + feature or test + bugfix were in separate commits and then the order is problematic. From my point of view there are only a few "right" combinations. Let me try to explain: Assume some code is doing "if (res) " instead of "if (!res)" and after long debugging we have found that single line (and our code is full of printf now) and it is a path that has not been systematically tested yet. To move forward and create a patchset we should: * Add a test case that triggers the broken behavior. With a xUnit framework we would add an expected failure, with our approach we either capture the broken output, comment the OSMO_ASSERT or revert the OSMO_ASSERT condition. (See libosmocore * Let's say that if is already in code like: if (a) if (b) if (c) if (d) and we would like to re-factor it to be more readable. Then please do the refactoring _before_ applying the bugfix. The test output/result should not change as it is a refactoring. * Finally apply the fix. For bugfixes try to make them as small and clear as possible. Let's say even if you don't like the algorithm used, fix it. As part of the fix the test assertions can be enabled and the output change. The smaller the fix, the better. See libosmocore 6ac70a41ee4cc9f3f286fb6b8f397215590fc2ac for such an example. * If the algorithm is indeed bad now is the time to change it. It should just change the (refactored) method, test output and result should be stable and maybe add more tests as the new code is easier to test. In general my preferred way: New feature => one commit to add feature + test Bugfix => First test, then bugfix+test output/result update thank you holger

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Status of EDGE work and plans
by Holger Freyther 12 Jul '16

12 Jul '16

Hi guys, maybe a short summary helps to see where we are and where we need to go. Let me start with myself. Besides reviewing code I have two GPRS related topics I want to look at. The first one is the missing state transition for single phase access to avoid having to revert, the second one is to use perf to look at the performance difference of the two compressed bitmap routines. The bigger picture is that we have some features that work in parallel and the right order might be important to unlock them. My review/merging priority right now is: * 11bit RACH decoding: ** Get the libosmocore change in. As 0x0 is used as a value it needs to be inside the enum ** PCU protocol change to transport this access burst type and update to uint16_t ** OpenBSC change to allow 11bit burst access ** PCU change * T4 compression/decompression: I am not sold on the look-up tree yet but I understand that for good compression the API in libosmocore needs to change. a.) We remove T4 support from libosmocore as it is not used outside of the PCU and this gives us a way to mature the API without having to synchronize two projects b.) We know which out variables we need to add and can define the API The implementation (unrolled loop vs. tree) can be decided at a later point as we can hide it from the interface. * Changing coding schemes on re-transmission/etc. These are features and fixes that only relate to the PCU. I can merge whatever patchset is ready first. kind regards and looking forward to rebased patchsets holger

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GTP, GGSN and PGW testing
by Vasu Devan 12 Jul '16

12 Jul '16

Hi, Currently i am working in LTE and would like to test SGW and PDN-GW along with GTP protocol for my research aspect. I have already worked and used OpenairInterface EPC. But, i wanted to explore other kernel or user-space options of GTP. Please let me know the procedure to access the code of , (i) Latest mainline linux kernel version with your GTP code and user space GTP module. (ii) Also, could you please kindly provide me access to the SGW/GGSN and PGW codes. Please kindly provide me access to the latest code, such that i could test it and will even post the test results to the community. Thanks & Regards Vasu.

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RE: osmo-pcu[master]: Add data structure for ARQ-II in EGPRS DL
by Aravind Sirsikar 29 Jun '16

29 Jun '16

Hi Harald/Holger, Please let me know any further updates on the pending review for ARQ2?. Since it is pending for long time we would like to know how to proceed over this. Thanks, Aravind Sirsikar

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RE: osmo-pcu[master]: Add data structure for ARQ-II in EGPRS DL
by Aravind Sirsikar 24 Jun '16

24 Jun '16

Hi Holger, >Line 130: GprsCodingScheme cs_current_trans; >I would prefer to cs and cs_current_trans being private here. The cs_current_trans is made public to align with existing variables like block[RLC_MAX_LEN], len and others to have consistency. will it make sense to have cs and cs_current_trans as private?. We can rename cs to cs_last_tx as suggested in review of other patch. But it will have modification in other source files to address compilation errors. Thanks, Aravind Sirsikar

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conversations in gerrit "lost" here
by Neels Hofmeyr 21 Jun '16

21 Jun '16

I am a bit ambiguous on our use of comments in gerrit. We do discuss at least some fairly interesting things in the comments on patches waiting for approval in gerrit. When these discussions are attempted on openbsc@ or osmocom-net-gprs@, you tend to block off and redirect the discussion back to the gerrit comments infrastructure. However, we have moved the gerrit mails to a separate and very noisy mailing list, and these potentially interesting discussions are moved essentially out of the public focus. Also, if we in future would like to investigate discussion on some topic, we need to search both the main ML and the gerrit ML. IMHO it would make sense to copy the human originated comments to our "human" mailing lists, so that the automatic jenkins and gerrit notifications remain on the noisy ML while we see all discussions here. Is that easy to achieve (filter on originator of comment), and would you guys agree? ~Neels -- - Neels Hofmeyr <nhofmeyr(a)sysmocom.de> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschäftsführer / Managing Directors: Harald Welte

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gerrit and branches
by Neels Hofmeyr 20 Jun '16

20 Jun '16

Today I've taken another close look at branches and gerrit, and have written down my conclusions here: http://osmocom.org/projects/cellular-infrastructure/wiki/Gerrit#Submitting-… In summary: * Branch re-submission needs the workaround of tweaking the first commit. It would be nice to fix gerrit to not need this, but for the time being the effort of cosmetically changing the first commit log is acceptable. * It *is* possible to have private branches in the gerrit repos and still be able to submit them to master, with the proper project config. I have thus switched all our gerrit projects' configs to rebase-if-necessary with the flags as described on the wiki page. (Except for osmo-pcap, where we still disallow content merges.) I will now go back to pushing my "private" developments to the public repository (gerrit) under the neels/ or sysmocom/ namespaces. ~Neels -- - Neels Hofmeyr <nhofmeyr(a)sysmocom.de> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschäftsführer / Managing Directors: Harald Welte

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testing gerrit, might be down shortly
by Neels Hofmeyr 20 Jun '16

20 Jun '16

I'm testing things related to our gerrit bug report, if it's not working for you right now it may be because I'm restarting gerrit to test with/out our fix. I'll repost when I'm done. ~Neels -- - Neels Hofmeyr <nhofmeyr(a)sysmocom.de> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschäftsführer / Managing Directors: Harald Welte

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[EGPRS PCU] ARQ-2 support for EGPRS DL Retransmission
by Aravind Sirsikar 20 Jun '16

20 Jun '16

Hi, I have pushed series of patches related to ARQ-2 support for EGPRS DL Retransmission. This patches have been reviewed earlier and comments have been Addressed. These patches are tested and validated with NuRAN 1.0 hardware. Below are the links to Gerrit review of each patches along with patch description. 1) https://gerrit.osmocom.org/#/c/332/ ==>Add data structure for ARQ-II in EGPRS DL. 2) https://gerrit.osmocom.org/#/c/333/ ==>Add Accessor functions for ARQ-II in EGPRS DL. 3) https://gerrit.osmocom.org/#/c/334/ ==>Modify DL tbf flow for ARQ-II in EGPRS DL Retx. 4) https://gerrit.osmocom.org/#/c/335/ ==>Add test cases to support ARQ-II for EGPRS DL Retx. Above patches must be merged to master in the same order as mentioned above. Thanks, Aravind Sirsikar

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RE: [MERGED] osmo-pcu[master]: Add test cases for Header Type 2 in EGPRS UL
by Aravind Sirsikar 17 Jun '16

17 Jun '16

Hi Holger, > Holger Freyther: Looks good to me, approved In http://git.osmocom.org/osmo-pcu, one of the 5 patches submitted for Gerrit review(MCS5-MCS9 support in EGPRS UL)has been merged to master. As this patch is part of series of 5 patches it should be merged in below order. 1) Remove GMSK only check in EGPRS UL(Change-Id:I567acc012d8ad49681715f0104ba7e91625e1e7a) 2) Add Header Type2 support in EGPRS UL(Change-Id:Iac2422c8acbdcefe20aafbba6a4eb87c9893e3ba) 3) Add header type 1 support for EGPRS uplink(Change-Id:I13c250e2e07377982ac3f29745f3cffd4088552a) 4) Add test cases for Header Type 2 in EGPRS UL(Change-Id:I1dd46010065a6d6da21e8e45af71e6d5f649b0b0) 5) Add test cases for Header type1 in EGPRS UL(Change-Id:I21811bb126dbe151b0708a964d3143bc2fd52389) Currently osmo-pcu build is failing since only patch 4 of the list above has been merged. Can you please let me know how to proceed over this? Going forward it will be helpful for us if you can suggest how to number the patches of a series in Gerrit review. Thanks, Aravind Sirsikar

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[EGPRS] Gerrit guidance to address Jenkins Build failure and resubmission of patch.
by Aravind Sirsikar 17 Jun '16

17 Jun '16

Hi, Can you guide us to address issues we are currently facing about Gerrit process as listed below 1) Jenkins Build reports failure. Can you suggest the reason for this. Because in our local branch the Unit test and build is successful. 2) Is there any specific process to resubmit patch after addressing the review comments. Thanks, Aravind Sirsikar

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Issue seen in decoding compressed bitmap in EPDAN
by Prasad Kaup 15 Jun '16

15 Jun '16

Hello, During testing with latest master osmo-pcu, we see that there is an issue in decoding of compressed bitmap with make-up code in EPDAN Input to decoding algorithm: Compressed bitmap array : 0x7a,0x28,0x31,0xe1,0xf1,0xc1,0x6c,0x32,0x87 Starting colour code : 1 Length : 72 Expected output ( Refer 3GPP 44.060 section 9.1.10): Expected decoded Length: 304 Expected Uncompressed bitmap: dd c1 48 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 Actual output: Actual decoded length :292 Actual Uncompressed bitmap: dd c1 48 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 Regards Prasad

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[EGPRS] Radisys planned activities for EGPRS
by Aravind Sirsikar 08 Jun '16

08 Jun '16

Hello All, We at Radisys have started working on EGPRS performance analysis and stability testing on NuRAN LiteCell 1.0. Below are the High level Items we have planned. 1) EGPRS Performance benchmarking analysis and optimization 2) CPU and Memory benchmarking and analysis 3) EGPRS multi user tests, Stability, Stress and Soak testing We will keep sharing the relevant patches as well as bench marking report to the mailing list for seeking inputs and suggestion. Thanks, Aravind Sirsikar

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[PATCH] gtp/queue/queue_seqdel(): fix element check which always was true
by Alexander Couzens 05 Jun '16

05 Jun '16

Iterate over all member until the correct member found, remove it and rearrange the seqnext pointer --- gtp/queue.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/gtp/queue.c b/gtp/queue.c index 5b4d849..fbfa1ec 100644 --- a/gtp/queue.c +++ b/gtp/queue.c @@ -105,8 +105,7 @@ static int queue_seqdel(struct queue_t *queue, struct qmsg_t *qmsg) printf("Begin queue_seqdel seq = %d\n", (int)qmsg->seq); for (qmsg2 = queue->hashseq[hash]; qmsg2; qmsg2 = qmsg2->seqnext) { - /* FIXME: this is always true !?! */ - if (qmsg == qmsg) { + if (qmsg == qmsg2) { if (!qmsg_prev) queue->hashseq[hash] = qmsg2->seqnext; else -- 2.8.3

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[PATCH] ggsn/cmdline: remove unused variable check_required
by Alexander Couzens 02 Jun '16

02 Jun '16

fix an unused warning --- ggsn/cmdline.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/ggsn/cmdline.c b/ggsn/cmdline.c index 31c0744..2ef87cb 100644 --- a/ggsn/cmdline.c +++ b/ggsn/cmdline.c @@ -609,14 +609,12 @@ cmdline_parser_internal ( int override; int initialize; - int check_required; int check_ambiguity; package_name = argv[0]; override = params->override; initialize = params->initialize; - check_required = params->check_required; check_ambiguity = params->check_ambiguity; if (initialize) -- 2.8.3

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Status of GEA issues in OsmoSGSN
by Harald Welte 01 Jun '16

01 Jun '16

Dear all, Deater has been investigating which issues currently prevent us from using GEA in OsmoSGSN. His mail has been sitting in my inbox too long, and hence I'm forwarding his results here to the mailing list for further discussion / follow-up. Regards, Harald -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

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MS behavior with dysfunctional GPRS
by Max 27 May '16

27 May '16

Hi. Imagine following configuration: - GSM network advertises GPRS capabilities in System Information messages - It's not actually available (SGSN crashed, all the timeslots are occupied by TCH etc) What would be expected behavior for MS in this scenario? Shall it switch to alternative network in hope of getting promised GPRS? Shall it hang on the currently camped network providing voice/sms only? Which spec(s) cover that? What could be decision factors for the MS? SIM entries, some data in SI, some timeout somewhere, smth else? -- Max Suraev <msuraev(a)sysmocom.de> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschaeftsfuehrer / Managing Directors: Holger Freyther, Harald Welte

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latest sysmobts-mgr failure on NURAN 1.0
by Prasad Kaup 25 May '16

25 May '16

Hi All, We are trying to cross compile and test latest osmo-pcu, osmo-bts, openbsc, osmo-sgsn , and ggsn. One issue we see with latest sysmobts-mgr (Commit ed494443cc1e9732b43ef99cccf187d17ac931ef) on Nuran 1.0 is as below. - PA is off - Signal is very low - No signal on slave. With sysmobts-mgr preloaded(older commit version) on board, the setup works fine. Please help us in resolving this issue seen in master branch of osmo-bts latest commit. Regards Prasad

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OpenBSC and related projects moved to Gerrit
by Holger Freyther 10 May '16

10 May '16

Hi, as discussed at OsmoDevCon and the mails from last week. The following list of projects have moved to use gerrit for codereview: * libosmocore.git * libosmo-abis.git * libosmo-netif.git * libosmo-sccp.git * libsmpp34.git * openbsc.git * osmo-bts.git * osmo-iuh.git * osmo-pcu.git * cellmgr-ng.git * osmo-sip-connector.git I have created this[1] page with the minimum to set-up gerrit as git-remote, register, configure the account and then hopefully the most frequently used comments. kind regards holger [1] http://osmocom.org/projects/cellular-infrastructure/wiki/Gerrit

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PCU sends invalid block number to L1
by Minh-Quang Nguyen 02 May '16

02 May '16

Hi All, We have noticed that the PCU sends invalid block number to L1 in DSP leading to unexpected message warning in DSP "GsmL1_PhDataReq(1) : Unexpected burst (Invalid blockNumber) [2!=1, SAPI 21-21]]". After an investigation, we observe that the 'pcu_rx_rts_req' function in pcu_l1_if.cpp receives invalid block number from BTS. Looking at the BTS side, the calculation of L1SAP_FN2PTCCHBLOCK defined as '#define L1SAP_FN2PTCCHBLOCK(fn) ((fn / 52) & 7)' does not seem to be valid for expected PTCCH block numbers B0, B1,B2,B3 defined in Table 6 in TS 05.02 version 8.11.0. What do you think about re-define the calculation of the L1SAP_FN2PTCCHBLOCK? Regards, Minh-Quang Nguyen Concepteur logiciel | Software designer GSM/Network T. 418 914-7484 x2296 | 1 855 914-7484 | F. 418 914-9477 2150, Cyrille-Duquet, Québec (Québec) G1N 2G3 CANADA minh-quang.nguyen(a)nutaq.com <mailto:minh-quang.nguyen@nutaq.com> www.nutaq.com <http://www.nutaq.com/> QUEBEC MONTREAL NEW YORK <http://www.nutaq.com/signature/nutaq_q_m_ny.jpg> Facebook <http://www.facebook.com/pages/Nutaq-Innovation/351864938229900> Twitter <https://twitter.com/NutaqInnovation> LinkedIn <http://www.linkedin.com/company/Nutaq> YouTube <http://www.youtube.com/NutaqInnovation>

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[PATCH 1/5] Cleanup build leftovers
by msuraev＠sysmocom.de 28 Apr '16

28 Apr '16

From: Max <msuraev(a)sysmocom.de> --- .gitignore | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/.gitignore b/.gitignore index d2713bf..959b09b 100644 --- a/.gitignore +++ b/.gitignore @@ -18,7 +18,7 @@ compile depcomp install-sh missing -libtool +*libtool ltmain.sh core -- 2.8.1

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[PATCH 0/4] Support for Incremental redundency in EGPRS DL
by Aravind Sirsikar 25 Apr '16

25 Apr '16

This series of patches supports Incremental redundency for EGPRS DL case. These patches have been integration tested on Nuran 1.0 for EGPRS MCS 9 support in DL. And in UL only MCS4 has been tested. The EGPRS testing has been done with Browsing and Ping in DL with larger packet sizes(1500). Aravind Sirsikar (4): Add data structure for MCS change in Retx Add Accessor functions for MCS change in Retx Modify DL tbf flow for MCS change in Retx Add test cases to support MCS change during Retx src/gprs_coding_scheme.cpp | 36 ++++ src/gprs_coding_scheme.h | 27 ++- src/gprs_ms.cpp | 5 + src/gprs_ms.h | 1 + src/rlc.h | 10 ++ src/tbf_dl.cpp | 41 +++-- tests/tbf/TbfTest.cpp | 224 +++++++++++++++++++++++++ tests/tbf/TbfTest.err | 397 ++++++++++++++++++++++++++++++++++++++++++++ tests/tbf/TbfTest.ok | 9 + 9 files changed, 737 insertions(+), 13 deletions(-) -- 1.7.9.5

1 4

Query for verified EGPRS osmo-pcu version on Nuran1.0
by Aravind Sirsikar 18 Apr '16

18 Apr '16

Hi Harald, Can you please let us know the commit version for osmo-pcu which has been verified for EGPRS functionality on Nuran 1.0 hardware. We have been trying the latest commit 1aa75273025b033d17c1068369a7ba145d5c9f06 which does not work( no uplink data received yet). Can you provide details of the hardware in which EGPRS functionality has been successfully verified. Thanks, Aravind Sirsikar

2 1

[PATCH] Fix make distcheck
by msuraev＠sysmocom.de 13 Apr '16

13 Apr '16

From: Max <msuraev(a)sysmocom.de> Define automake variable for configure flags to be used while running 'make distcheck'. This should prevent additional vty tests from running in readonly distcheck environment. Note: user can still break the build by overriding this with DISTCHECK_CONFIGURE_FLAGS variable. --- src/Makefile.am | 1 + 1 file changed, 1 insertion(+) diff --git a/src/Makefile.am b/src/Makefile.am index 6428bef..487ef1d 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -19,6 +19,7 @@ # AM_CPPFLAGS = $(STD_DEFINES_AND_INCLUDES) $(LIBOSMOCORE_CFLAGS) $(LIBOSMOGB_CFLAGS) $(LIBOSMOGSM_CFLAGS) +AM_DISTCHECK_CONFIGURE_FLAGS="--enable-sysmocom-dsp=no" if ENABLE_SYSMODSP AM_CPPFLAGS += -DENABLE_SYSMODSP -- 2.8.1

2 1

[PATCH 1/4] Add data structure for MCS change in Retx
by Aravind Sirsikar 13 Apr '16

13 Apr '16

From: Aravind Sirsikar <arvind.sirsikar(a)radisys.com> Modify the existing data structure to support MCS change during retransmission in EGPRS DL --- src/gprs_coding_scheme.cpp | 36 ++++++++++++++++++++++++++++++++++++ src/gprs_coding_scheme.h | 8 ++++++++ src/rlc.h | 11 +++++++++++ 3 files changed, 55 insertions(+) diff --git a/src/gprs_coding_scheme.cpp b/src/gprs_coding_scheme.cpp index 8601d4f..436b2d9 100644 --- a/src/gprs_coding_scheme.cpp +++ b/src/gprs_coding_scheme.cpp @@ -21,6 +21,42 @@ #include "gprs_coding_scheme.h" +/* + * 44.060 Table 8.1.1.1 and Table 8.1.1.2 + * It has 3 level indexing. 0th level is ARQ type + * 1st level is Original MCS (index 0 corresponds to MCS1 and so on) + * 2nd level is MS MCS (index 0 corresponds to MCS1 and so on) + * in 0th level indexing only ARQ type 2 is supported i.e index 1 for + * incremental redundancy + */ + +/* TODO: Need to support ARQ type 1 */ +enum GprsCodingScheme::Scheme GprsCodingScheme::egprs_mcs_retx_tbl[MAX_NUM_ARQ] + [MAX_NUM_MCS][MAX_NUM_MCS] = { + { + {MCS1, MCS1, MCS1, MCS1, MCS1, MCS1, MCS1, MCS1, MCS1}, + {MCS2, MCS2, MCS2, MCS2, MCS2, MCS2, MCS2, MCS2, MCS2}, + {MCS3, MCS3, MCS3, MCS3, MCS3, MCS3, MCS3, MCS3, MCS3}, + {MCS1, MCS1, MCS1, MCS4, MCS4, MCS4, MCS4, MCS4, MCS4}, + {MCS2, MCS2, MCS2, MCS2, MCS5, MCS5, MCS7, MCS7, MCS7}, + {MCS3, MCS3, MCS3, MCS3, MCS3, MCS6, MCS6, MCS6, MCS9}, + {MCS2, MCS2, MCS2, MCS2, MCS5, MCS5, MCS7, MCS7, MCS7}, + {MCS3, MCS3, MCS3, MCS3, MCS3, MCS6, MCS6, MCS8, MCS8}, + {MCS3, MCS3, MCS3, MCS3, MCS3, MCS6, MCS6, MCS6, MCS9} + }, + { + {MCS1, MCS1, MCS1, MCS1, MCS1, MCS1, MCS1, MCS1, MCS1}, + {MCS2, MCS2, MCS2, MCS2, MCS2, MCS2, MCS2, MCS2, MCS2}, + {MCS3, MCS3, MCS3, MCS3, MCS3, MCS3, MCS3, MCS3, MCS3}, + {MCS4, MCS4, MCS4, MCS4, MCS4, MCS4, MCS4, MCS4, MCS4}, + {MCS5, MCS5, MCS5, MCS5, MCS5, MCS5, MCS7, MCS7, MCS7}, + {MCS6, MCS6, MCS6, MCS6, MCS6, MCS6, MCS6, MCS6, MCS9}, + {MCS5, MCS5, MCS5, MCS5, MCS5, MCS5, MCS7, MCS7, MCS7}, + {MCS6, MCS6, MCS6, MCS6, MCS6, MCS6, MCS6, MCS8, MCS8}, + {MCS6, MCS6, MCS6, MCS6, MCS6, MCS6, MCS6, MCS8, MCS9} + } + }; + static struct { struct { unsigned int bytes; diff --git a/src/gprs_coding_scheme.h b/src/gprs_coding_scheme.h index aec3762..06e90fc 100644 --- a/src/gprs_coding_scheme.h +++ b/src/gprs_coding_scheme.h @@ -26,6 +26,12 @@ class GprsCodingScheme { public: + +#define MAX_NUM_ARQ 2 /* max. number of ARQ */ +#define MAX_NUM_MCS 9 /* max. number of MCS */ +#define EGPRS_ARQ1 0x0 +#define EGPRS_ARQ2 0x1 + enum Scheme { UNKNOWN, CS1, CS2, CS3, CS4, @@ -105,6 +111,8 @@ public: static GprsCodingScheme getEgprsByNum(unsigned num); static const char *modeName(Mode mode); + static Scheme egprs_mcs_retx_tbl[MAX_NUM_ARQ] + [MAX_NUM_MCS][MAX_NUM_MCS]; private: GprsCodingScheme(int s); /* fail on use */ GprsCodingScheme& operator =(int s); /* fail on use */ diff --git a/src/rlc.h b/src/rlc.h index 8f75588..f5429c2 100644 --- a/src/rlc.h +++ b/src/rlc.h @@ -120,6 +120,17 @@ struct gprs_rlc_data { uint8_t len; struct gprs_rlc_data_block_info block_info; + + /* + * cs2 is variable to hold the cs value for + * current transmission. cs2 is same as cs during + * transmission case. During retransmission cs2 is + * fetched from egprs_mcs_retx_tbl table based on + * cs and demanded cs. Once the data has been sent successfully, + * cs2 will be copied to cs. Reference is 44.060 Table + * 8.1.1.1 and Table 8.1.1.2 + */ + GprsCodingScheme cs2; GprsCodingScheme cs; /* puncturing scheme value to be used for next transmission*/ -- 1.7.9.5

3 9

[PATCH 1/2] Fix bug in uplink header type 1 parsing
by Bhargava Abhyankar 13 Apr '16

13 Apr '16

Fix bug in extraction of E and TI header fields in parsing of uplink header type 1 RLC data block. Test suite for the same is also updated. --- src/decoding.cpp | 15 ++++++++------- tests/edge/EdgeTest.cpp | 16 +++++++--------- 2 files changed, 15 insertions(+), 16 deletions(-) diff --git a/src/decoding.cpp b/src/decoding.cpp index 6844856..b8e453e 100644 --- a/src/decoding.cpp +++ b/src/decoding.cpp @@ -513,9 +513,9 @@ int Decoding::rlc_parse_ul_data_header_egprs_type_1( offs = rlc->data_offs_bits[0] / 8; OSMO_ASSERT(rlc->data_offs_bits[0] % 8 == 0); - e_ti_header = (data[offs-1] + (data[offs] << 8)) >> 7; - rlc->block_info[0].e = !!(e_ti_header & 0x01); - rlc->block_info[0].ti = !!(e_ti_header & 0x02); + e_ti_header = (data[offs - 1] & (0xc0)) >> 6; + rlc->block_info[0].e = (e_ti_header & 0x01); + rlc->block_info[0].ti = (e_ti_header & 0x02); cur_bit += 2; rlc->block_info[1].cv = egprs1->cv; @@ -524,20 +524,21 @@ int Decoding::rlc_parse_ul_data_header_egprs_type_1( ((egprs1->bsn2_a << 0) | (egprs1->bsn2_b << 2)); rlc->block_info[1].bsn = rlc->block_info[1].bsn & (RLC_EGPRS_SNS - 1); - cur_bit += rlc->data_offs_bits[1] - 2; + cur_bit = rlc->data_offs_bits[1] - 2; offs = rlc->data_offs_bits[1] / 8; OSMO_ASSERT(rlc->data_offs_bits[1] % 8 == 2); - e_ti_header = (data[offs-1] + (data[offs] << 8)) >> 7; - rlc->block_info[1].e = !!(e_ti_header & 0x01); - rlc->block_info[1].ti = !!(e_ti_header & 0x02); + e_ti_header = (data[offs] & (0x03)); + rlc->block_info[1].e = (e_ti_header & 0x01); + rlc->block_info[1].ti = (e_ti_header & 0x02); cur_bit += 2; /* skip data area */ cur_bit += cs.maxDataBlockBytes() * 8; return cur_bit; } + /** * \brief Copy LSB bitstream RLC data block to byte aligned buffer. * diff --git a/tests/edge/EdgeTest.cpp b/tests/edge/EdgeTest.cpp index ff080f9..9b4a1a5 100644 --- a/tests/edge/EdgeTest.cpp +++ b/tests/edge/EdgeTest.cpp @@ -1376,18 +1376,16 @@ static gprs_rlcmac_ul_tbf *uplink_header_parsing_test(BTS *the_bts, egprs1->r = 1; egprs1->cv = 7; egprs1->tfi_a = tfi & (~((~0) << 2)); - egprs1->tfi_b = tfi & (~((~0) << 3)) << 2; - egprs1->bsn1_a = 10; - egprs1->bsn1_b = 17; - egprs1->bsn2_a = 0; - egprs1->bsn2_b = 25; + egprs1->tfi_b = (tfi & (~((~0) << 3)) << 2) >> 2; + egprs1->bsn1_a = 0; + egprs1->bsn1_b = 0; + egprs1->bsn2_a = 1; + egprs1->bsn2_b = 0; egprs1->cps = 15; egprs1->rsb = 0; egprs1->pi = 0; - data[6] = 1; - data[6 + 68] = 1; - data[75] = 1; - data[75 + 68] = 1; + data[5] = 0x40; + data[5 + 69] = 1; pdch = &the_bts->bts_data()->trx[trx_no].pdch[ts_no]; pdch->rcv_block(&data[0], 143, *fn, &meas); } -- 2.5.0

2 6

[PATCH] Add test cases for EGPRS retransmission in DL
by Aravind Sirsikar 13 Apr '16

13 Apr '16

Add test cases to validate retransmission of EGPRS RLC data block for all the MCS in downlink direction without support of MCS change during retransmission --- tests/tbf/TbfTest.cpp | 88 ++++++ tests/tbf/TbfTest.err | 833 +++++++++++++++++++++++++++++++++++++++++++++++++ tests/tbf/TbfTest.ok | 11 + 3 files changed, 932 insertions(+) diff --git a/tests/tbf/TbfTest.cpp b/tests/tbf/TbfTest.cpp index e1be844..3fa0625 100644 --- a/tests/tbf/TbfTest.cpp +++ b/tests/tbf/TbfTest.cpp @@ -1213,6 +1213,72 @@ static void test_tbf_egprs_two_phase() printf("=== end %s ===\n", __func__); } +static void establish_and_use_egprs_dl_tbf_for_retx(BTS *the_bts, int mcs) +{ + unsigned i; + uint8_t ms_class = 11; + uint8_t egprs_ms_class = 11; + uint32_t fn = 0; + uint8_t trx_no; + uint32_t tlli = 0xffeeddcc; + uint8_t test_data[512]; + + uint8_t rbb[64/8]; + + gprs_rlcmac_dl_tbf *dl_tbf; + + printf("Testing MCS-%d for retx\n", mcs); + + memset(test_data, 1, sizeof(test_data)); + the_bts->bts_data()->initial_mcs_dl = mcs; + + dl_tbf = create_dl_tbf(the_bts, ms_class, egprs_ms_class, &trx_no); + dl_tbf->update_ms(tlli, GPRS_RLCMAC_DL_TBF); + + for (i = 0; i < sizeof(test_data); i++) + test_data[i] = i%512; + + OSMO_ASSERT(dl_tbf->state_is(GPRS_RLCMAC_FLOW)); + + /* Schedule a LLC frame */ + dl_tbf->append_data(ms_class, 1000, test_data, 100); + + OSMO_ASSERT(dl_tbf->state_is(GPRS_RLCMAC_FLOW)); + + /* Send only a few RLC/MAC blocks */ + fn = 0; + uint8_t block_nr = 0; + int index1 = 0; + + while (index1 < 4) { + /* Request to send one block */ + request_dl_rlc_block(dl_tbf, &fn, &block_nr); + index1++; + if (dl_tbf->m_window.m_v_b.is_unacked(0)) + dl_tbf->m_window.m_v_b.mark_nacked(0); + if (mcs > 6) + if (dl_tbf->m_window.m_v_b.is_unacked(1)) + dl_tbf->m_window.m_v_b.mark_nacked(1); + + } + + /* Drain the queue */ + while (dl_tbf->have_data()) + /* Request to send one RLC/MAC block */ + request_dl_rlc_block(dl_tbf, &fn); + + OSMO_ASSERT(dl_tbf->state_is(GPRS_RLCMAC_FLOW)); + + /* Receive a final ACK */ + dl_tbf->rcvd_dl_ack(1, dl_tbf->m_window.v_s(), rbb); + + /* Clean up and ensure tbfs are in the correct state */ + OSMO_ASSERT(dl_tbf->state_is(GPRS_RLCMAC_WAIT_RELEASE)); + dl_tbf->dl_ass_state = GPRS_RLCMAC_DL_ASS_NONE; + check_tbf(dl_tbf); + tbf_free(dl_tbf); +} + static void establish_and_use_egprs_dl_tbf(BTS *the_bts, int mcs) { unsigned i; @@ -1272,6 +1338,27 @@ static void establish_and_use_egprs_dl_tbf(BTS *the_bts, int mcs) tbf_free(dl_tbf); } +static void test_tbf_egprs_retx_dl(void) +{ + BTS the_bts; + gprs_rlcmac_bts *bts; + uint8_t ts_no = 4; + int i; + + printf("=== start %s ===\n", __func__); + + bts = the_bts.bts_data(); + + setup_bts(&the_bts, ts_no); + bts->dl_tbf_idle_msec = 200; + bts->egprs_enabled = 1; + + for (i = 1; i <= 9; i++) + establish_and_use_egprs_dl_tbf_for_retx(&the_bts, i); + + printf("=== end %s ===\n", __func__); +} + static void test_tbf_egprs_dl() { BTS the_bts; @@ -1356,6 +1443,7 @@ int main(int argc, char **argv) test_tbf_ws(); test_tbf_egprs_two_phase(); test_tbf_egprs_dl(); + test_tbf_egprs_retx_dl(); if (getenv("TALLOC_REPORT_FULL")) talloc_report_full(tall_pcu_ctx, stderr); diff --git a/tests/tbf/TbfTest.err b/tests/tbf/TbfTest.err index 9bea2fd..c4642f3 100644 --- a/tests/tbf/TbfTest.err +++ b/tests/tbf/TbfTest.err @@ -5113,3 +5113,836 @@ PDCH(TS 4, TRX 0): Detaching TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=RELEASING EG Detaching TBF from MS object, TLLI = 0xffeeddcc, TBF = TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=RELEASING EGPRS) Destroying MS object, TLLI = 0xffeeddcc ********** TBF ends here ********** +Searching for first unallocated TFI: TRX=0 + Found TFI=0. +********** TBF starts here ********** +Allocating DL TBF: MS_CLASS=11/11 +Creating MS object, TLLI = 0x00000000 +Modifying MS object, TLLI = 0x00000000, MS class 0 -> 11 +Modifying MS object, TLLI = 0x00000000, EGPRS MS class 0 -> 11 +Enabled EGPRS for TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS), mode EGPRS +Slot Allocation (Algorithm A) for class 0 +- Skipping TS 0, because not enabled +- Skipping TS 1, because not enabled +- Skipping TS 2, because not enabled +- Skipping TS 3, because not enabled +- Skipping TS 5, because not enabled +- Skipping TS 6, because not enabled +- Skipping TS 7, because not enabled +- Assign downlink TS=4 TFI=0 +PDCH(TS 4, TRX 0): Attaching TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS), 1 TBFs, USFs = 00, TFIs = 00000001. +- Setting Control TS 4 +Attaching TBF to MS object, TLLI = 0x00000000, TBF = TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS) +Allocated TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS): trx = 0, ul_slots = 10, dl_slots = 10 +TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS): Setting EGPRS window size to 64 +TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS) changes state from NULL to FLOW +The MS object cannot fully confirm an unexpected TLLI: 0xffeeddcc, partly confirmed +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) append +New and old TBF are the same TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) start Packet Downlink Assignment (PACCH) ++++++++++++++++++++++++++ TX : Packet Downlink Assignment +++++++++++++++++++++++++ +------------------------- TX : Packet Downlink Assignment ------------------------- +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS): Scheduling polling at FN 13 TS 4 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) Scheduled DL Assignment polling on FN=13, TS=4 +Scheduling control message at RTS for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) (TRX=0, TS=4) +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=0 block=0 data=4f 08 20 00 44 02 00 02 08 04 00 c0 03 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==0) +- Sending new block at BSN 0, CS=MCS-1 +- Dequeue next LLC for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) (len=100) +-- Chunk with length 100 larger than space (22) left in block: copy only remaining space, and we are done +data block (BSN 0, MCS-1): 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f 10 11 12 13 14 15 +- Copying data unit 0 (BSN 0) +msg block (BSN 0, MCS-1): 07 00 00 96 00 02 04 06 08 0a 0c 0e 10 12 14 16 18 1a 1c 1e 20 22 24 26 28 2a 00 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=4 block=1 data=07 00 00 96 00 02 04 06 08 0a 0c 0e 10 12 14 16 18 1a 1c 1e 20 22 24 26 28 2a 00 +Received RTS for PDCH: TRX=0 TS=4 FN=8 block_nr=2 scheduling free USF for polling at FN=13 of TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==1) +- Resending BSN 0 +- Copying data unit 0 (BSN 0) +msg block (BSN 0, MCS-1): 07 00 00 98 00 02 04 06 08 0a 0c 0e 10 12 14 16 18 1a 1c 1e 20 22 24 26 28 2a 00 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=8 block=2 data=07 00 00 98 00 02 04 06 08 0a 0c 0e 10 12 14 16 18 1a 1c 1e 20 22 24 26 28 2a 00 +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==1) +- Resending BSN 0 +- Copying data unit 0 (BSN 0) +msg block (BSN 0, MCS-1): 07 00 00 96 00 02 04 06 08 0a 0c 0e 10 12 14 16 18 1a 1c 1e 20 22 24 26 28 2a 00 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=13 block=3 data=07 00 00 96 00 02 04 06 08 0a 0c 0e 10 12 14 16 18 1a 1c 1e 20 22 24 26 28 2a 00 +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==1) +- Resending BSN 0 +- Copying data unit 0 (BSN 0) +msg block (BSN 0, MCS-1): 07 00 00 98 00 02 04 06 08 0a 0c 0e 10 12 14 16 18 1a 1c 1e 20 22 24 26 28 2a 00 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=17 block=4 data=07 00 00 98 00 02 04 06 08 0a 0c 0e 10 12 14 16 18 1a 1c 1e 20 22 24 26 28 2a 00 +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==1) +- Sending new block at BSN 1, CS=MCS-1 +-- Chunk with length 78 larger than space (22) left in block: copy only remaining space, and we are done +data block (BSN 1, MCS-1): 16 17 18 19 1a 1b 1c 1d 1e 1f 20 21 22 23 24 25 26 27 28 29 2a 2b +- Copying data unit 0 (BSN 1) +msg block (BSN 1, MCS-1): 07 40 00 96 2c 2e 30 32 34 36 38 3a 3c 3e 40 42 44 46 48 4a 4c 4e 50 52 54 56 00 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=21 block=5 data=07 40 00 96 2c 2e 30 32 34 36 38 3a 3c 3e 40 42 44 46 48 4a 4c 4e 50 52 54 56 00 +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==2) +- Sending new block at BSN 2, CS=MCS-1 +-- Chunk with length 56 larger than space (22) left in block: copy only remaining space, and we are done +data block (BSN 2, MCS-1): 2c 2d 2e 2f 30 31 32 33 34 35 36 37 38 39 3a 3b 3c 3d 3e 3f 40 41 +- Copying data unit 0 (BSN 2) +msg block (BSN 2, MCS-1): 07 80 00 96 58 5a 5c 5e 60 62 64 66 68 6a 6c 6e 70 72 74 76 78 7a 7c 7e 80 82 00 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=26 block=6 data=07 80 00 96 58 5a 5c 5e 60 62 64 66 68 6a 6c 6e 70 72 74 76 78 7a 7c 7e 80 82 00 +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==3) +- Sending new block at BSN 3, CS=MCS-1 +-- Chunk with length 34 larger than space (22) left in block: copy only remaining space, and we are done +data block (BSN 3, MCS-1): 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f 50 51 52 53 54 55 56 57 +- Copying data unit 0 (BSN 3) +msg block (BSN 3, MCS-1): 07 c0 00 96 84 86 88 8a 8c 8e 90 92 94 96 98 9a 9c 9e a0 a2 a4 a6 a8 aa ac ae 00 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=30 block=7 data=07 c0 00 96 84 86 88 8a 8c 8e 90 92 94 96 98 9a 9c 9e a0 a2 a4 a6 a8 aa ac ae 00 +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==4) +- Sending new block at BSN 4, CS=MCS-1 +-- Chunk with length 12 is less than remaining space (22): add length header to to delimit LLC frame +Complete DL frame for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS)len=100 +-- Empty chunk, added LLC dummy command of size 8, drained_since=0 +-- Chunk with length 8 is less than remaining space (9): add length header to to delimit LLC frame +-- No space left, so we are done. +Complete DL frame for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS)len=8 +data block (BSN 4, MCS-1): 18 11 58 59 5a 5b 5c 5d 5e 5f 60 61 62 63 43 c0 01 2b 2b 2b 2b 2b +- Copying data unit 0 (BSN 4) +- Scheduling Ack/Nack polling, because is was requested explicitly (e.g. first final block sent). +Polling is already scheduled for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) +msg block (BSN 4, MCS-1): 07 00 01 16 30 22 b0 b2 b4 b6 b8 ba bc be c0 c2 c4 c6 86 80 03 56 56 56 56 56 00 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=34 block=8 data=07 00 01 16 30 22 b0 b2 b4 b6 b8 ba bc be c0 c2 c4 c6 86 80 03 56 56 56 56 56 00 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink acknowledge +- Final ACK received. +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) changes state from FLOW to WAIT RELEASE +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=WAIT RELEASE EGPRS) starting timer 3193. +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=WAIT RELEASE EGPRS) changes state from WAIT RELEASE to RELEASING +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=RELEASING EGPRS) free +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=RELEASING EGPRS) stopping timer 3193. +PDCH(TS 4, TRX 0): Detaching TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=RELEASING EGPRS), 0 TBFs, USFs = 00, TFIs = 00000000. +Detaching TBF from MS object, TLLI = 0xffeeddcc, TBF = TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=RELEASING EGPRS) +Destroying MS object, TLLI = 0xffeeddcc +********** TBF ends here ********** +Searching for first unallocated TFI: TRX=0 + Found TFI=0. +********** TBF starts here ********** +Allocating DL TBF: MS_CLASS=11/11 +Creating MS object, TLLI = 0x00000000 +Modifying MS object, TLLI = 0x00000000, MS class 0 -> 11 +Modifying MS object, TLLI = 0x00000000, EGPRS MS class 0 -> 11 +Enabled EGPRS for TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS), mode EGPRS +Slot Allocation (Algorithm A) for class 0 +- Skipping TS 0, because not enabled +- Skipping TS 1, because not enabled +- Skipping TS 2, because not enabled +- Skipping TS 3, because not enabled +- Skipping TS 5, because not enabled +- Skipping TS 6, because not enabled +- Skipping TS 7, because not enabled +- Assign downlink TS=4 TFI=0 +PDCH(TS 4, TRX 0): Attaching TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS), 1 TBFs, USFs = 00, TFIs = 00000001. +- Setting Control TS 4 +Attaching TBF to MS object, TLLI = 0x00000000, TBF = TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS) +Allocated TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS): trx = 0, ul_slots = 10, dl_slots = 10 +TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS): Setting EGPRS window size to 64 +TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS) changes state from NULL to FLOW +The MS object cannot fully confirm an unexpected TLLI: 0xffeeddcc, partly confirmed +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) append +New and old TBF are the same TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) start Packet Downlink Assignment (PACCH) ++++++++++++++++++++++++++ TX : Packet Downlink Assignment +++++++++++++++++++++++++ +------------------------- TX : Packet Downlink Assignment ------------------------- +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS): Scheduling polling at FN 13 TS 4 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) Scheduled DL Assignment polling on FN=13, TS=4 +Scheduling control message at RTS for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) (TRX=0, TS=4) +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=0 block=0 data=4f 08 20 00 44 02 00 02 08 04 00 c0 03 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==0) +- Sending new block at BSN 0, CS=MCS-2 +- Dequeue next LLC for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) (len=100) +-- Chunk with length 100 larger than space (28) left in block: copy only remaining space, and we are done +data block (BSN 0, MCS-2): 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f 10 11 12 13 14 15 16 17 18 19 1a 1b +- Copying data unit 0 (BSN 0) +msg block (BSN 0, MCS-2): 07 00 00 92 00 02 04 06 08 0a 0c 0e 10 12 14 16 18 1a 1c 1e 20 22 24 26 28 2a 2c 2e 30 32 34 36 00 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=4 block=1 data=07 00 00 92 00 02 04 06 08 0a 0c 0e 10 12 14 16 18 1a 1c 1e 20 22 24 26 28 2a 2c 2e 30 32 34 36 00 +Received RTS for PDCH: TRX=0 TS=4 FN=8 block_nr=2 scheduling free USF for polling at FN=13 of TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==1) +- Resending BSN 0 +- Copying data unit 0 (BSN 0) +msg block (BSN 0, MCS-2): 07 00 00 94 00 02 04 06 08 0a 0c 0e 10 12 14 16 18 1a 1c 1e 20 22 24 26 28 2a 2c 2e 30 32 34 36 00 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=8 block=2 data=07 00 00 94 00 02 04 06 08 0a 0c 0e 10 12 14 16 18 1a 1c 1e 20 22 24 26 28 2a 2c 2e 30 32 34 36 00 +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==1) +- Resending BSN 0 +- Copying data unit 0 (BSN 0) +msg block (BSN 0, MCS-2): 07 00 00 92 00 02 04 06 08 0a 0c 0e 10 12 14 16 18 1a 1c 1e 20 22 24 26 28 2a 2c 2e 30 32 34 36 00 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=13 block=3 data=07 00 00 92 00 02 04 06 08 0a 0c 0e 10 12 14 16 18 1a 1c 1e 20 22 24 26 28 2a 2c 2e 30 32 34 36 00 +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==1) +- Resending BSN 0 +- Copying data unit 0 (BSN 0) +msg block (BSN 0, MCS-2): 07 00 00 94 00 02 04 06 08 0a 0c 0e 10 12 14 16 18 1a 1c 1e 20 22 24 26 28 2a 2c 2e 30 32 34 36 00 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=17 block=4 data=07 00 00 94 00 02 04 06 08 0a 0c 0e 10 12 14 16 18 1a 1c 1e 20 22 24 26 28 2a 2c 2e 30 32 34 36 00 +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==1) +- Sending new block at BSN 1, CS=MCS-2 +-- Chunk with length 72 larger than space (28) left in block: copy only remaining space, and we are done +data block (BSN 1, MCS-2): 1c 1d 1e 1f 20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f 30 31 32 33 34 35 36 37 +- Copying data unit 0 (BSN 1) +msg block (BSN 1, MCS-2): 07 40 00 92 38 3a 3c 3e 40 42 44 46 48 4a 4c 4e 50 52 54 56 58 5a 5c 5e 60 62 64 66 68 6a 6c 6e 00 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=21 block=5 data=07 40 00 92 38 3a 3c 3e 40 42 44 46 48 4a 4c 4e 50 52 54 56 58 5a 5c 5e 60 62 64 66 68 6a 6c 6e 00 +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==2) +- Sending new block at BSN 2, CS=MCS-2 +-- Chunk with length 44 larger than space (28) left in block: copy only remaining space, and we are done +data block (BSN 2, MCS-2): 38 39 3a 3b 3c 3d 3e 3f 40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f 50 51 52 53 +- Copying data unit 0 (BSN 2) +msg block (BSN 2, MCS-2): 07 80 00 92 70 72 74 76 78 7a 7c 7e 80 82 84 86 88 8a 8c 8e 90 92 94 96 98 9a 9c 9e a0 a2 a4 a6 00 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=26 block=6 data=07 80 00 92 70 72 74 76 78 7a 7c 7e 80 82 84 86 88 8a 8c 8e 90 92 94 96 98 9a 9c 9e a0 a2 a4 a6 00 +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==3) +- Sending new block at BSN 3, CS=MCS-2 +-- Chunk with length 16 is less than remaining space (28): add length header to to delimit LLC frame +Complete DL frame for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS)len=100 +-- Empty chunk, added LLC dummy command of size 10, drained_since=0 +-- Chunk with length 10 is less than remaining space (11): add length header to to delimit LLC frame +-- No space left, so we are done. +Complete DL frame for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS)len=10 +data block (BSN 3, MCS-2): 20 15 54 55 56 57 58 59 5a 5b 5c 5d 5e 5f 60 61 62 63 43 c0 01 2b 2b 2b 2b 2b 2b 2b +- Copying data unit 0 (BSN 3) +- Scheduling Ack/Nack polling, because is was requested explicitly (e.g. first final block sent). +Polling is already scheduled for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) +msg block (BSN 3, MCS-2): 07 c0 00 12 40 2a a8 aa ac ae b0 b2 b4 b6 b8 ba bc be c0 c2 c4 c6 86 80 03 56 56 56 56 56 56 56 00 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=30 block=7 data=07 c0 00 12 40 2a a8 aa ac ae b0 b2 b4 b6 b8 ba bc be c0 c2 c4 c6 86 80 03 56 56 56 56 56 56 56 00 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink acknowledge +- Final ACK received. +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) changes state from FLOW to WAIT RELEASE +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=WAIT RELEASE EGPRS) starting timer 3193. +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=WAIT RELEASE EGPRS) changes state from WAIT RELEASE to RELEASING +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=RELEASING EGPRS) free +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=RELEASING EGPRS) stopping timer 3193. +PDCH(TS 4, TRX 0): Detaching TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=RELEASING EGPRS), 0 TBFs, USFs = 00, TFIs = 00000000. +Detaching TBF from MS object, TLLI = 0xffeeddcc, TBF = TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=RELEASING EGPRS) +Destroying MS object, TLLI = 0xffeeddcc +********** TBF ends here ********** +Searching for first unallocated TFI: TRX=0 + Found TFI=0. +********** TBF starts here ********** +Allocating DL TBF: MS_CLASS=11/11 +Creating MS object, TLLI = 0x00000000 +Modifying MS object, TLLI = 0x00000000, MS class 0 -> 11 +Modifying MS object, TLLI = 0x00000000, EGPRS MS class 0 -> 11 +Enabled EGPRS for TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS), mode EGPRS +Slot Allocation (Algorithm A) for class 0 +- Skipping TS 0, because not enabled +- Skipping TS 1, because not enabled +- Skipping TS 2, because not enabled +- Skipping TS 3, because not enabled +- Skipping TS 5, because not enabled +- Skipping TS 6, because not enabled +- Skipping TS 7, because not enabled +- Assign downlink TS=4 TFI=0 +PDCH(TS 4, TRX 0): Attaching TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS), 1 TBFs, USFs = 00, TFIs = 00000001. +- Setting Control TS 4 +Attaching TBF to MS object, TLLI = 0x00000000, TBF = TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS) +Allocated TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS): trx = 0, ul_slots = 10, dl_slots = 10 +TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS): Setting EGPRS window size to 64 +TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS) changes state from NULL to FLOW +The MS object cannot fully confirm an unexpected TLLI: 0xffeeddcc, partly confirmed +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) append +New and old TBF are the same TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) start Packet Downlink Assignment (PACCH) ++++++++++++++++++++++++++ TX : Packet Downlink Assignment +++++++++++++++++++++++++ +------------------------- TX : Packet Downlink Assignment ------------------------- +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS): Scheduling polling at FN 13 TS 4 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) Scheduled DL Assignment polling on FN=13, TS=4 +Scheduling control message at RTS for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) (TRX=0, TS=4) +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=0 block=0 data=4f 08 20 00 44 02 00 02 08 04 00 c0 03 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==0) +- Sending new block at BSN 0, CS=MCS-3 +- Dequeue next LLC for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) (len=100) +-- Chunk with length 100 larger than space (37) left in block: copy only remaining space, and we are done +data block (BSN 0, MCS-3): 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f 10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f 20 21 22 23 24 +- Copying data unit 0 (BSN 0) +msg block (BSN 0, MCS-3): 07 00 00 86 00 02 04 06 08 0a 0c 0e 10 12 14 16 18 1a 1c 1e 20 22 24 26 28 2a 2c 2e 30 32 34 36 38 3a 3c 3e 40 42 44 46 48 00 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=4 block=1 data=07 00 00 86 00 02 04 06 08 0a 0c 0e 10 12 14 16 18 1a 1c 1e 20 22 24 26 28 2a 2c 2e 30 32 34 36 38 3a 3c 3e 40 42 44 46 48 00 +Received RTS for PDCH: TRX=0 TS=4 FN=8 block_nr=2 scheduling free USF for polling at FN=13 of TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==1) +- Resending BSN 0 +- Copying data unit 0 (BSN 0) +msg block (BSN 0, MCS-3): 07 00 00 88 00 02 04 06 08 0a 0c 0e 10 12 14 16 18 1a 1c 1e 20 22 24 26 28 2a 2c 2e 30 32 34 36 38 3a 3c 3e 40 42 44 46 48 00 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=8 block=2 data=07 00 00 88 00 02 04 06 08 0a 0c 0e 10 12 14 16 18 1a 1c 1e 20 22 24 26 28 2a 2c 2e 30 32 34 36 38 3a 3c 3e 40 42 44 46 48 00 +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==1) +- Resending BSN 0 +- Copying data unit 0 (BSN 0) +msg block (BSN 0, MCS-3): 07 00 00 8a 00 02 04 06 08 0a 0c 0e 10 12 14 16 18 1a 1c 1e 20 22 24 26 28 2a 2c 2e 30 32 34 36 38 3a 3c 3e 40 42 44 46 48 00 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=13 block=3 data=07 00 00 8a 00 02 04 06 08 0a 0c 0e 10 12 14 16 18 1a 1c 1e 20 22 24 26 28 2a 2c 2e 30 32 34 36 38 3a 3c 3e 40 42 44 46 48 00 +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==1) +- Resending BSN 0 +- Copying data unit 0 (BSN 0) +msg block (BSN 0, MCS-3): 07 00 00 86 00 02 04 06 08 0a 0c 0e 10 12 14 16 18 1a 1c 1e 20 22 24 26 28 2a 2c 2e 30 32 34 36 38 3a 3c 3e 40 42 44 46 48 00 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=17 block=4 data=07 00 00 86 00 02 04 06 08 0a 0c 0e 10 12 14 16 18 1a 1c 1e 20 22 24 26 28 2a 2c 2e 30 32 34 36 38 3a 3c 3e 40 42 44 46 48 00 +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==1) +- Sending new block at BSN 1, CS=MCS-3 +-- Chunk with length 63 larger than space (37) left in block: copy only remaining space, and we are done +data block (BSN 1, MCS-3): 25 26 27 28 29 2a 2b 2c 2d 2e 2f 30 31 32 33 34 35 36 37 38 39 3a 3b 3c 3d 3e 3f 40 41 42 43 44 45 46 47 48 49 +- Copying data unit 0 (BSN 1) +msg block (BSN 1, MCS-3): 07 40 00 86 4a 4c 4e 50 52 54 56 58 5a 5c 5e 60 62 64 66 68 6a 6c 6e 70 72 74 76 78 7a 7c 7e 80 82 84 86 88 8a 8c 8e 90 92 00 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=21 block=5 data=07 40 00 86 4a 4c 4e 50 52 54 56 58 5a 5c 5e 60 62 64 66 68 6a 6c 6e 70 72 74 76 78 7a 7c 7e 80 82 84 86 88 8a 8c 8e 90 92 00 +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==2) +- Sending new block at BSN 2, CS=MCS-3 +-- Chunk with length 26 is less than remaining space (37): add length header to to delimit LLC frame +Complete DL frame for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS)len=100 +-- Empty chunk, added LLC dummy command of size 9, drained_since=0 +-- Chunk with length 9 is less than remaining space (10): add length header to to delimit LLC frame +-- No space left, so we are done. +Complete DL frame for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS)len=9 +data block (BSN 2, MCS-3): 34 13 4a 4b 4c 4d 4e 4f 50 51 52 53 54 55 56 57 58 59 5a 5b 5c 5d 5e 5f 60 61 62 63 43 c0 01 2b 2b 2b 2b 2b 2b +- Copying data unit 0 (BSN 2) +- Scheduling Ack/Nack polling, because is was requested explicitly (e.g. first final block sent). +Polling is already scheduled for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) +msg block (BSN 2, MCS-3): 07 80 00 06 68 26 94 96 98 9a 9c 9e a0 a2 a4 a6 a8 aa ac ae b0 b2 b4 b6 b8 ba bc be c0 c2 c4 c6 86 80 03 56 56 56 56 56 56 00 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=26 block=6 data=07 80 00 06 68 26 94 96 98 9a 9c 9e a0 a2 a4 a6 a8 aa ac ae b0 b2 b4 b6 b8 ba bc be c0 c2 c4 c6 86 80 03 56 56 56 56 56 56 00 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink acknowledge +- Final ACK received. +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) changes state from FLOW to WAIT RELEASE +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=WAIT RELEASE EGPRS) starting timer 3193. +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=WAIT RELEASE EGPRS) changes state from WAIT RELEASE to RELEASING +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=RELEASING EGPRS) free +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=RELEASING EGPRS) stopping timer 3193. +PDCH(TS 4, TRX 0): Detaching TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=RELEASING EGPRS), 0 TBFs, USFs = 00, TFIs = 00000000. +Detaching TBF from MS object, TLLI = 0xffeeddcc, TBF = TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=RELEASING EGPRS) +Destroying MS object, TLLI = 0xffeeddcc +********** TBF ends here ********** +Searching for first unallocated TFI: TRX=0 + Found TFI=0. +********** TBF starts here ********** +Allocating DL TBF: MS_CLASS=11/11 +Creating MS object, TLLI = 0x00000000 +Modifying MS object, TLLI = 0x00000000, MS class 0 -> 11 +Modifying MS object, TLLI = 0x00000000, EGPRS MS class 0 -> 11 +Enabled EGPRS for TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS), mode EGPRS +Slot Allocation (Algorithm A) for class 0 +- Skipping TS 0, because not enabled +- Skipping TS 1, because not enabled +- Skipping TS 2, because not enabled +- Skipping TS 3, because not enabled +- Skipping TS 5, because not enabled +- Skipping TS 6, because not enabled +- Skipping TS 7, because not enabled +- Assign downlink TS=4 TFI=0 +PDCH(TS 4, TRX 0): Attaching TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS), 1 TBFs, USFs = 00, TFIs = 00000001. +- Setting Control TS 4 +Attaching TBF to MS object, TLLI = 0x00000000, TBF = TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS) +Allocated TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS): trx = 0, ul_slots = 10, dl_slots = 10 +TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS): Setting EGPRS window size to 64 +TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS) changes state from NULL to FLOW +The MS object cannot fully confirm an unexpected TLLI: 0xffeeddcc, partly confirmed +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) append +New and old TBF are the same TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) start Packet Downlink Assignment (PACCH) ++++++++++++++++++++++++++ TX : Packet Downlink Assignment +++++++++++++++++++++++++ +------------------------- TX : Packet Downlink Assignment ------------------------- +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS): Scheduling polling at FN 13 TS 4 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) Scheduled DL Assignment polling on FN=13, TS=4 +Scheduling control message at RTS for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) (TRX=0, TS=4) +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=0 block=0 data=4f 08 20 00 44 02 00 02 08 04 00 c0 03 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==0) +- Sending new block at BSN 0, CS=MCS-4 +- Dequeue next LLC for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) (len=100) +-- Chunk with length 100 larger than space (44) left in block: copy only remaining space, and we are done +data block (BSN 0, MCS-4): 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f 10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f 20 21 22 23 24 25 26 27 28 29 2a 2b +- Copying data unit 0 (BSN 0) +msg block (BSN 0, MCS-4): 07 00 00 80 00 02 04 06 08 0a 0c 0e 10 12 14 16 18 1a 1c 1e 20 22 24 26 28 2a 2c 2e 30 32 34 36 38 3a 3c 3e 40 42 44 46 48 4a 4c 4e 50 52 54 56 00 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=4 block=1 data=07 00 00 80 00 02 04 06 08 0a 0c 0e 10 12 14 16 18 1a 1c 1e 20 22 24 26 28 2a 2c 2e 30 32 34 36 38 3a 3c 3e 40 42 44 46 48 4a 4c 4e 50 52 54 56 00 +Received RTS for PDCH: TRX=0 TS=4 FN=8 block_nr=2 scheduling free USF for polling at FN=13 of TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==1) +- Resending BSN 0 +- Copying data unit 0 (BSN 0) +msg block (BSN 0, MCS-4): 07 00 00 82 00 02 04 06 08 0a 0c 0e 10 12 14 16 18 1a 1c 1e 20 22 24 26 28 2a 2c 2e 30 32 34 36 38 3a 3c 3e 40 42 44 46 48 4a 4c 4e 50 52 54 56 00 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=8 block=2 data=07 00 00 82 00 02 04 06 08 0a 0c 0e 10 12 14 16 18 1a 1c 1e 20 22 24 26 28 2a 2c 2e 30 32 34 36 38 3a 3c 3e 40 42 44 46 48 4a 4c 4e 50 52 54 56 00 +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==1) +- Resending BSN 0 +- Copying data unit 0 (BSN 0) +msg block (BSN 0, MCS-4): 07 00 00 84 00 02 04 06 08 0a 0c 0e 10 12 14 16 18 1a 1c 1e 20 22 24 26 28 2a 2c 2e 30 32 34 36 38 3a 3c 3e 40 42 44 46 48 4a 4c 4e 50 52 54 56 00 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=13 block=3 data=07 00 00 84 00 02 04 06 08 0a 0c 0e 10 12 14 16 18 1a 1c 1e 20 22 24 26 28 2a 2c 2e 30 32 34 36 38 3a 3c 3e 40 42 44 46 48 4a 4c 4e 50 52 54 56 00 +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==1) +- Resending BSN 0 +- Copying data unit 0 (BSN 0) +msg block (BSN 0, MCS-4): 07 00 00 80 00 02 04 06 08 0a 0c 0e 10 12 14 16 18 1a 1c 1e 20 22 24 26 28 2a 2c 2e 30 32 34 36 38 3a 3c 3e 40 42 44 46 48 4a 4c 4e 50 52 54 56 00 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=17 block=4 data=07 00 00 80 00 02 04 06 08 0a 0c 0e 10 12 14 16 18 1a 1c 1e 20 22 24 26 28 2a 2c 2e 30 32 34 36 38 3a 3c 3e 40 42 44 46 48 4a 4c 4e 50 52 54 56 00 +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==1) +- Sending new block at BSN 1, CS=MCS-4 +-- Chunk with length 56 larger than space (44) left in block: copy only remaining space, and we are done +data block (BSN 1, MCS-4): 2c 2d 2e 2f 30 31 32 33 34 35 36 37 38 39 3a 3b 3c 3d 3e 3f 40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f 50 51 52 53 54 55 56 57 +- Copying data unit 0 (BSN 1) +msg block (BSN 1, MCS-4): 07 40 00 80 58 5a 5c 5e 60 62 64 66 68 6a 6c 6e 70 72 74 76 78 7a 7c 7e 80 82 84 86 88 8a 8c 8e 90 92 94 96 98 9a 9c 9e a0 a2 a4 a6 a8 aa ac ae 00 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=21 block=5 data=07 40 00 80 58 5a 5c 5e 60 62 64 66 68 6a 6c 6e 70 72 74 76 78 7a 7c 7e 80 82 84 86 88 8a 8c 8e 90 92 94 96 98 9a 9c 9e a0 a2 a4 a6 a8 aa ac ae 00 +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==2) +- Sending new block at BSN 2, CS=MCS-4 +-- Chunk with length 12 is less than remaining space (44): add length header to to delimit LLC frame +Complete DL frame for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS)len=100 +-- Empty chunk, added LLC dummy command of size 30, drained_since=0 +-- Chunk with length 30 is less than remaining space (31): add length header to to delimit LLC frame +-- No space left, so we are done. +Complete DL frame for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS)len=30 +data block (BSN 2, MCS-4): 18 3d 58 59 5a 5b 5c 5d 5e 5f 60 61 62 63 43 c0 01 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b +- Copying data unit 0 (BSN 2) +- Scheduling Ack/Nack polling, because is was requested explicitly (e.g. first final block sent). +Polling is already scheduled for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) +msg block (BSN 2, MCS-4): 07 80 00 00 30 7a b0 b2 b4 b6 b8 ba bc be c0 c2 c4 c6 86 80 03 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 00 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=26 block=6 data=07 80 00 00 30 7a b0 b2 b4 b6 b8 ba bc be c0 c2 c4 c6 86 80 03 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 56 00 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink acknowledge +- Final ACK received. +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) changes state from FLOW to WAIT RELEASE +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=WAIT RELEASE EGPRS) starting timer 3193. +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=WAIT RELEASE EGPRS) changes state from WAIT RELEASE to RELEASING +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=RELEASING EGPRS) free +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=RELEASING EGPRS) stopping timer 3193. +PDCH(TS 4, TRX 0): Detaching TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=RELEASING EGPRS), 0 TBFs, USFs = 00, TFIs = 00000000. +Detaching TBF from MS object, TLLI = 0xffeeddcc, TBF = TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=RELEASING EGPRS) +Destroying MS object, TLLI = 0xffeeddcc +********** TBF ends here ********** +Searching for first unallocated TFI: TRX=0 + Found TFI=0. +********** TBF starts here ********** +Allocating DL TBF: MS_CLASS=11/11 +Creating MS object, TLLI = 0x00000000 +Modifying MS object, TLLI = 0x00000000, MS class 0 -> 11 +Modifying MS object, TLLI = 0x00000000, EGPRS MS class 0 -> 11 +Enabled EGPRS for TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS), mode EGPRS +Slot Allocation (Algorithm A) for class 0 +- Skipping TS 0, because not enabled +- Skipping TS 1, because not enabled +- Skipping TS 2, because not enabled +- Skipping TS 3, because not enabled +- Skipping TS 5, because not enabled +- Skipping TS 6, because not enabled +- Skipping TS 7, because not enabled +- Assign downlink TS=4 TFI=0 +PDCH(TS 4, TRX 0): Attaching TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS), 1 TBFs, USFs = 00, TFIs = 00000001. +- Setting Control TS 4 +Attaching TBF to MS object, TLLI = 0x00000000, TBF = TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS) +Allocated TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS): trx = 0, ul_slots = 10, dl_slots = 10 +TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS): Setting EGPRS window size to 64 +TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS) changes state from NULL to FLOW +The MS object cannot fully confirm an unexpected TLLI: 0xffeeddcc, partly confirmed +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) append +New and old TBF are the same TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) start Packet Downlink Assignment (PACCH) ++++++++++++++++++++++++++ TX : Packet Downlink Assignment +++++++++++++++++++++++++ +------------------------- TX : Packet Downlink Assignment ------------------------- +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS): Scheduling polling at FN 13 TS 4 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) Scheduled DL Assignment polling on FN=13, TS=4 +Scheduling control message at RTS for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) (TRX=0, TS=4) +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=0 block=0 data=4f 08 20 00 44 02 00 02 08 04 00 c0 03 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==0) +- Sending new block at BSN 0, CS=MCS-5 +- Dequeue next LLC for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) (len=100) +-- Chunk with length 100 larger than space (56) left in block: copy only remaining space, and we are done +data block (BSN 0, MCS-5): 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f 10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f 20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f 30 31 32 33 34 35 36 37 +- Copying data unit 0 (BSN 0) +msg block (BSN 0, MCS-5): 07 00 00 18 40 80 c0 00 41 81 c1 01 42 82 c2 02 43 83 c3 03 44 84 c4 04 45 85 c5 05 46 86 c6 06 47 87 c7 07 48 88 c8 08 49 89 c9 09 4a 8a ca 0a 4b 8b cb 0b 4c 8c cc 0c 4d 8d cd 0d +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=4 block=1 data=07 00 00 18 40 80 c0 00 41 81 c1 01 42 82 c2 02 43 83 c3 03 44 84 c4 04 45 85 c5 05 46 86 c6 06 47 87 c7 07 48 88 c8 08 49 89 c9 09 4a 8a ca 0a 4b 8b cb 0b 4c 8c cc 0c 4d 8d cd 0d +Received RTS for PDCH: TRX=0 TS=4 FN=8 block_nr=2 scheduling free USF for polling at FN=13 of TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==1) +- Resending BSN 0 +- Copying data unit 0 (BSN 0) +msg block (BSN 0, MCS-5): 07 00 00 1a 40 80 c0 00 41 81 c1 01 42 82 c2 02 43 83 c3 03 44 84 c4 04 45 85 c5 05 46 86 c6 06 47 87 c7 07 48 88 c8 08 49 89 c9 09 4a 8a ca 0a 4b 8b cb 0b 4c 8c cc 0c 4d 8d cd 0d +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=8 block=2 data=07 00 00 1a 40 80 c0 00 41 81 c1 01 42 82 c2 02 43 83 c3 03 44 84 c4 04 45 85 c5 05 46 86 c6 06 47 87 c7 07 48 88 c8 08 49 89 c9 09 4a 8a ca 0a 4b 8b cb 0b 4c 8c cc 0c 4d 8d cd 0d +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==1) +- Resending BSN 0 +- Copying data unit 0 (BSN 0) +msg block (BSN 0, MCS-5): 07 00 00 18 40 80 c0 00 41 81 c1 01 42 82 c2 02 43 83 c3 03 44 84 c4 04 45 85 c5 05 46 86 c6 06 47 87 c7 07 48 88 c8 08 49 89 c9 09 4a 8a ca 0a 4b 8b cb 0b 4c 8c cc 0c 4d 8d cd 0d +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=13 block=3 data=07 00 00 18 40 80 c0 00 41 81 c1 01 42 82 c2 02 43 83 c3 03 44 84 c4 04 45 85 c5 05 46 86 c6 06 47 87 c7 07 48 88 c8 08 49 89 c9 09 4a 8a ca 0a 4b 8b cb 0b 4c 8c cc 0c 4d 8d cd 0d +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==1) +- Resending BSN 0 +- Copying data unit 0 (BSN 0) +msg block (BSN 0, MCS-5): 07 00 00 1a 40 80 c0 00 41 81 c1 01 42 82 c2 02 43 83 c3 03 44 84 c4 04 45 85 c5 05 46 86 c6 06 47 87 c7 07 48 88 c8 08 49 89 c9 09 4a 8a ca 0a 4b 8b cb 0b 4c 8c cc 0c 4d 8d cd 0d +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=17 block=4 data=07 00 00 1a 40 80 c0 00 41 81 c1 01 42 82 c2 02 43 83 c3 03 44 84 c4 04 45 85 c5 05 46 86 c6 06 47 87 c7 07 48 88 c8 08 49 89 c9 09 4a 8a ca 0a 4b 8b cb 0b 4c 8c cc 0c 4d 8d cd 0d +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==1) +- Sending new block at BSN 1, CS=MCS-5 +-- Chunk with length 44 is less than remaining space (56): add length header to to delimit LLC frame +Complete DL frame for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS)len=100 +-- Empty chunk, added LLC dummy command of size 10, drained_since=0 +-- Chunk with length 10 is less than remaining space (11): add length header to to delimit LLC frame +-- No space left, so we are done. +Complete DL frame for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS)len=10 +data block (BSN 1, MCS-5): 58 15 38 39 3a 3b 3c 3d 3e 3f 40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f 50 51 52 53 54 55 56 57 58 59 5a 5b 5c 5d 5e 5f 60 61 62 63 43 c0 01 2b 2b 2b 2b 2b 2b 2b +- Copying data unit 0 (BSN 1) +- Scheduling Ack/Nack polling, because is was requested explicitly (e.g. first final block sent). +Polling is already scheduled for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) +msg block (BSN 1, MCS-5): 07 40 00 08 56 05 4e 8e ce 0e 4f 8f cf 0f 50 90 d0 10 51 91 d1 11 52 92 d2 12 53 93 d3 13 54 94 d4 14 55 95 d5 15 56 96 d6 16 57 97 d7 17 58 98 d8 d8 10 70 c0 ca ca ca ca ca ca 0a +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=21 block=5 data=07 40 00 08 56 05 4e 8e ce 0e 4f 8f cf 0f 50 90 d0 10 51 91 d1 11 52 92 d2 12 53 93 d3 13 54 94 d4 14 55 95 d5 15 56 96 d6 16 57 97 d7 17 58 98 d8 d8 10 70 c0 ca ca ca ca ca ca 0a +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink acknowledge +- Final ACK received. +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) changes state from FLOW to WAIT RELEASE +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=WAIT RELEASE EGPRS) starting timer 3193. +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=WAIT RELEASE EGPRS) changes state from WAIT RELEASE to RELEASING +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=RELEASING EGPRS) free +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=RELEASING EGPRS) stopping timer 3193. +PDCH(TS 4, TRX 0): Detaching TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=RELEASING EGPRS), 0 TBFs, USFs = 00, TFIs = 00000000. +Detaching TBF from MS object, TLLI = 0xffeeddcc, TBF = TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=RELEASING EGPRS) +Destroying MS object, TLLI = 0xffeeddcc +********** TBF ends here ********** +Searching for first unallocated TFI: TRX=0 + Found TFI=0. +********** TBF starts here ********** +Allocating DL TBF: MS_CLASS=11/11 +Creating MS object, TLLI = 0x00000000 +Modifying MS object, TLLI = 0x00000000, MS class 0 -> 11 +Modifying MS object, TLLI = 0x00000000, EGPRS MS class 0 -> 11 +Enabled EGPRS for TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS), mode EGPRS +Slot Allocation (Algorithm A) for class 0 +- Skipping TS 0, because not enabled +- Skipping TS 1, because not enabled +- Skipping TS 2, because not enabled +- Skipping TS 3, because not enabled +- Skipping TS 5, because not enabled +- Skipping TS 6, because not enabled +- Skipping TS 7, because not enabled +- Assign downlink TS=4 TFI=0 +PDCH(TS 4, TRX 0): Attaching TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS), 1 TBFs, USFs = 00, TFIs = 00000001. +- Setting Control TS 4 +Attaching TBF to MS object, TLLI = 0x00000000, TBF = TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS) +Allocated TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS): trx = 0, ul_slots = 10, dl_slots = 10 +TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS): Setting EGPRS window size to 64 +TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS) changes state from NULL to FLOW +The MS object cannot fully confirm an unexpected TLLI: 0xffeeddcc, partly confirmed +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) append +New and old TBF are the same TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) start Packet Downlink Assignment (PACCH) ++++++++++++++++++++++++++ TX : Packet Downlink Assignment +++++++++++++++++++++++++ +------------------------- TX : Packet Downlink Assignment ------------------------- +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS): Scheduling polling at FN 13 TS 4 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) Scheduled DL Assignment polling on FN=13, TS=4 +Scheduling control message at RTS for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) (TRX=0, TS=4) +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=0 block=0 data=4f 08 20 00 44 02 00 02 08 04 00 c0 03 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==0) +- Sending new block at BSN 0, CS=MCS-6 +- Dequeue next LLC for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) (len=100) +-- Chunk with length 100 larger than space (74) left in block: copy only remaining space, and we are done +data block (BSN 0, MCS-6): 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f 10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f 20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f 30 31 32 33 34 35 36 37 38 39 3a 3b 3c 3d 3e 3f 40 41 42 43 44 45 46 47 48 49 +- Copying data unit 0 (BSN 0) +msg block (BSN 0, MCS-6): 07 00 00 10 40 80 c0 00 41 81 c1 01 42 82 c2 02 43 83 c3 03 44 84 c4 04 45 85 c5 05 46 86 c6 06 47 87 c7 07 48 88 c8 08 49 89 c9 09 4a 8a ca 0a 4b 8b cb 0b 4c 8c cc 0c 4d 8d cd 0d 4e 8e ce 0e 4f 8f cf 0f 50 90 d0 10 51 91 d1 11 52 12 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=4 block=1 data=07 00 00 10 40 80 c0 00 41 81 c1 01 42 82 c2 02 43 83 c3 03 44 84 c4 04 45 85 c5 05 46 86 c6 06 47 87 c7 07 48 88 c8 08 49 89 c9 09 4a 8a ca 0a 4b 8b cb 0b 4c 8c cc 0c 4d 8d cd 0d 4e 8e ce 0e 4f 8f cf 0f 50 90 d0 10 51 91 d1 11 52 12 +Received RTS for PDCH: TRX=0 TS=4 FN=8 block_nr=2 scheduling free USF for polling at FN=13 of TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==1) +- Resending BSN 0 +- Copying data unit 0 (BSN 0) +msg block (BSN 0, MCS-6): 07 00 00 12 40 80 c0 00 41 81 c1 01 42 82 c2 02 43 83 c3 03 44 84 c4 04 45 85 c5 05 46 86 c6 06 47 87 c7 07 48 88 c8 08 49 89 c9 09 4a 8a ca 0a 4b 8b cb 0b 4c 8c cc 0c 4d 8d cd 0d 4e 8e ce 0e 4f 8f cf 0f 50 90 d0 10 51 91 d1 11 52 12 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=8 block=2 data=07 00 00 12 40 80 c0 00 41 81 c1 01 42 82 c2 02 43 83 c3 03 44 84 c4 04 45 85 c5 05 46 86 c6 06 47 87 c7 07 48 88 c8 08 49 89 c9 09 4a 8a ca 0a 4b 8b cb 0b 4c 8c cc 0c 4d 8d cd 0d 4e 8e ce 0e 4f 8f cf 0f 50 90 d0 10 51 91 d1 11 52 12 +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==1) +- Resending BSN 0 +- Copying data unit 0 (BSN 0) +msg block (BSN 0, MCS-6): 07 00 00 10 40 80 c0 00 41 81 c1 01 42 82 c2 02 43 83 c3 03 44 84 c4 04 45 85 c5 05 46 86 c6 06 47 87 c7 07 48 88 c8 08 49 89 c9 09 4a 8a ca 0a 4b 8b cb 0b 4c 8c cc 0c 4d 8d cd 0d 4e 8e ce 0e 4f 8f cf 0f 50 90 d0 10 51 91 d1 11 52 12 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=13 block=3 data=07 00 00 10 40 80 c0 00 41 81 c1 01 42 82 c2 02 43 83 c3 03 44 84 c4 04 45 85 c5 05 46 86 c6 06 47 87 c7 07 48 88 c8 08 49 89 c9 09 4a 8a ca 0a 4b 8b cb 0b 4c 8c cc 0c 4d 8d cd 0d 4e 8e ce 0e 4f 8f cf 0f 50 90 d0 10 51 91 d1 11 52 12 +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==1) +- Resending BSN 0 +- Copying data unit 0 (BSN 0) +msg block (BSN 0, MCS-6): 07 00 00 12 40 80 c0 00 41 81 c1 01 42 82 c2 02 43 83 c3 03 44 84 c4 04 45 85 c5 05 46 86 c6 06 47 87 c7 07 48 88 c8 08 49 89 c9 09 4a 8a ca 0a 4b 8b cb 0b 4c 8c cc 0c 4d 8d cd 0d 4e 8e ce 0e 4f 8f cf 0f 50 90 d0 10 51 91 d1 11 52 12 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=17 block=4 data=07 00 00 12 40 80 c0 00 41 81 c1 01 42 82 c2 02 43 83 c3 03 44 84 c4 04 45 85 c5 05 46 86 c6 06 47 87 c7 07 48 88 c8 08 49 89 c9 09 4a 8a ca 0a 4b 8b cb 0b 4c 8c cc 0c 4d 8d cd 0d 4e 8e ce 0e 4f 8f cf 0f 50 90 d0 10 51 91 d1 11 52 12 +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==1) +- Sending new block at BSN 1, CS=MCS-6 +-- Chunk with length 26 is less than remaining space (74): add length header to to delimit LLC frame +Complete DL frame for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS)len=100 +-- Empty chunk, added LLC dummy command of size 46, drained_since=0 +-- Chunk with length 46 is less than remaining space (47): add length header to to delimit LLC frame +-- No space left, so we are done. +Complete DL frame for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS)len=46 +data block (BSN 1, MCS-6): 34 5d 4a 4b 4c 4d 4e 4f 50 51 52 53 54 55 56 57 58 59 5a 5b 5c 5d 5e 5f 60 61 62 63 43 c0 01 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b +- Copying data unit 0 (BSN 1) +- Scheduling Ack/Nack polling, because is was requested explicitly (e.g. first final block sent). +Polling is already scheduled for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) +msg block (BSN 1, MCS-6): 07 40 00 00 4d 97 d2 12 53 93 d3 13 54 94 d4 14 55 95 d5 15 56 96 d6 16 57 97 d7 17 58 98 d8 d8 10 70 c0 ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca 0a +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=21 block=5 data=07 40 00 00 4d 97 d2 12 53 93 d3 13 54 94 d4 14 55 95 d5 15 56 96 d6 16 57 97 d7 17 58 98 d8 d8 10 70 c0 ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca ca 0a +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink acknowledge +- Final ACK received. +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) changes state from FLOW to WAIT RELEASE +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=WAIT RELEASE EGPRS) starting timer 3193. +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=WAIT RELEASE EGPRS) changes state from WAIT RELEASE to RELEASING +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=RELEASING EGPRS) free +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=RELEASING EGPRS) stopping timer 3193. +PDCH(TS 4, TRX 0): Detaching TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=RELEASING EGPRS), 0 TBFs, USFs = 00, TFIs = 00000000. +Detaching TBF from MS object, TLLI = 0xffeeddcc, TBF = TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=RELEASING EGPRS) +Destroying MS object, TLLI = 0xffeeddcc +********** TBF ends here ********** +Searching for first unallocated TFI: TRX=0 + Found TFI=0. +********** TBF starts here ********** +Allocating DL TBF: MS_CLASS=11/11 +Creating MS object, TLLI = 0x00000000 +Modifying MS object, TLLI = 0x00000000, MS class 0 -> 11 +Modifying MS object, TLLI = 0x00000000, EGPRS MS class 0 -> 11 +Enabled EGPRS for TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS), mode EGPRS +Slot Allocation (Algorithm A) for class 0 +- Skipping TS 0, because not enabled +- Skipping TS 1, because not enabled +- Skipping TS 2, because not enabled +- Skipping TS 3, because not enabled +- Skipping TS 5, because not enabled +- Skipping TS 6, because not enabled +- Skipping TS 7, because not enabled +- Assign downlink TS=4 TFI=0 +PDCH(TS 4, TRX 0): Attaching TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS), 1 TBFs, USFs = 00, TFIs = 00000001. +- Setting Control TS 4 +Attaching TBF to MS object, TLLI = 0x00000000, TBF = TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS) +Allocated TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS): trx = 0, ul_slots = 10, dl_slots = 10 +TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS): Setting EGPRS window size to 64 +TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS) changes state from NULL to FLOW +The MS object cannot fully confirm an unexpected TLLI: 0xffeeddcc, partly confirmed +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) append +New and old TBF are the same TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) start Packet Downlink Assignment (PACCH) ++++++++++++++++++++++++++ TX : Packet Downlink Assignment +++++++++++++++++++++++++ +------------------------- TX : Packet Downlink Assignment ------------------------- +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS): Scheduling polling at FN 13 TS 4 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) Scheduled DL Assignment polling on FN=13, TS=4 +Scheduling control message at RTS for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) (TRX=0, TS=4) +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=0 block=0 data=4f 08 20 00 44 02 00 02 08 04 00 c0 03 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==0) +- Sending new block at BSN 0, CS=MCS-7 +- Dequeue next LLC for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) (len=100) +-- Chunk with length 100 larger than space (56) left in block: copy only remaining space, and we are done +data block (BSN 0, MCS-7): 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f 10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f 20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f 30 31 32 33 34 35 36 37 +- Sending new block at BSN 1, CS=MCS-7 +-- Chunk with length 44 is less than remaining space (56): add length header to to delimit LLC frame +Complete DL frame for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS)len=100 +-- Empty chunk, added LLC dummy command of size 10, drained_since=0 +-- Chunk with length 10 is less than remaining space (11): add length header to to delimit LLC frame +-- No space left, so we are done. +Complete DL frame for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS)len=10 +data block (BSN 1, MCS-7): 58 15 38 39 3a 3b 3c 3d 3e 3f 40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f 50 51 52 53 54 55 56 57 58 59 5a 5b 5c 5d 5e 5f 60 61 62 63 43 c0 01 2b 2b 2b 2b 2b 2b 2b +- Copying data unit 0 (BSN 0) +- Copying data unit 1 (BSN 1) +- Scheduling Ack/Nack polling, because is was requested explicitly (e.g. first final block sent). +Polling is already scheduled for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) +msg block (BSN 0, MCS-7): 07 00 00 02 a0 01 04 08 0c 10 14 18 1c 20 24 28 2c 30 34 38 3c 40 44 48 4c 50 54 58 5c 60 64 68 6c 70 74 78 7c 80 84 88 8c 90 94 98 9c a0 a4 a8 ac b0 b4 b8 bc c0 c4 c8 cc d0 d4 d8 dc 80 55 81 93 a3 b3 c3 d3 e3 f3 03 14 24 34 44 54 64 74 84 94 a4 b4 c4 d4 e4 f4 04 15 25 35 45 55 65 75 85 95 a5 b5 c5 d5 e5 f5 05 16 26 36 36 04 1c b0 b2 b2 b2 b2 b2 b2 02 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=4 block=1 data=07 00 00 02 a0 01 04 08 0c 10 14 18 1c 20 24 28 2c 30 34 38 3c 40 44 48 4c 50 54 58 5c 60 64 68 6c 70 74 78 7c 80 84 88 8c 90 94 98 9c a0 a4 a8 ac b0 b4 b8 bc c0 c4 c8 cc d0 d4 d8 dc 80 55 81 93 a3 b3 c3 d3 e3 f3 03 14 24 34 44 54 64 74 84 94 a4 b4 c4 d4 e4 f4 04 15 25 35 45 55 65 75 85 95 a5 b5 c5 d5 e5 f5 05 16 26 36 36 04 1c b0 b2 b2 b2 b2 b2 b2 02 +Received RTS for PDCH: TRX=0 TS=4 FN=8 block_nr=2 scheduling free USF for polling at FN=13 of TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==2) +- Resending BSN 0 +- Resending BSN 1 +- Copying data unit 0 (BSN 0) +- Copying data unit 1 (BSN 1) +- Scheduling Ack/Nack polling, because is was requested explicitly (e.g. first final block sent). +Polling is already scheduled for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) +msg block (BSN 0, MCS-7): 07 00 00 02 c0 01 04 08 0c 10 14 18 1c 20 24 28 2c 30 34 38 3c 40 44 48 4c 50 54 58 5c 60 64 68 6c 70 74 78 7c 80 84 88 8c 90 94 98 9c a0 a4 a8 ac b0 b4 b8 bc c0 c4 c8 cc d0 d4 d8 dc 80 55 81 93 a3 b3 c3 d3 e3 f3 03 14 24 34 44 54 64 74 84 94 a4 b4 c4 d4 e4 f4 04 15 25 35 45 55 65 75 85 95 a5 b5 c5 d5 e5 f5 05 16 26 36 36 04 1c b0 b2 b2 b2 b2 b2 b2 02 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=8 block=2 data=07 00 00 02 c0 01 04 08 0c 10 14 18 1c 20 24 28 2c 30 34 38 3c 40 44 48 4c 50 54 58 5c 60 64 68 6c 70 74 78 7c 80 84 88 8c 90 94 98 9c a0 a4 a8 ac b0 b4 b8 bc c0 c4 c8 cc d0 d4 d8 dc 80 55 81 93 a3 b3 c3 d3 e3 f3 03 14 24 34 44 54 64 74 84 94 a4 b4 c4 d4 e4 f4 04 15 25 35 45 55 65 75 85 95 a5 b5 c5 d5 e5 f5 05 16 26 36 36 04 1c b0 b2 b2 b2 b2 b2 b2 02 +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==2) +- Resending BSN 0 +- Resending BSN 1 +- Copying data unit 0 (BSN 0) +- Copying data unit 1 (BSN 1) +- Scheduling Ack/Nack polling, because is was requested explicitly (e.g. first final block sent). +Polling is already scheduled for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) +msg block (BSN 0, MCS-7): 07 00 00 02 e0 01 04 08 0c 10 14 18 1c 20 24 28 2c 30 34 38 3c 40 44 48 4c 50 54 58 5c 60 64 68 6c 70 74 78 7c 80 84 88 8c 90 94 98 9c a0 a4 a8 ac b0 b4 b8 bc c0 c4 c8 cc d0 d4 d8 dc 80 55 81 93 a3 b3 c3 d3 e3 f3 03 14 24 34 44 54 64 74 84 94 a4 b4 c4 d4 e4 f4 04 15 25 35 45 55 65 75 85 95 a5 b5 c5 d5 e5 f5 05 16 26 36 36 04 1c b0 b2 b2 b2 b2 b2 b2 02 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=13 block=3 data=07 00 00 02 e0 01 04 08 0c 10 14 18 1c 20 24 28 2c 30 34 38 3c 40 44 48 4c 50 54 58 5c 60 64 68 6c 70 74 78 7c 80 84 88 8c 90 94 98 9c a0 a4 a8 ac b0 b4 b8 bc c0 c4 c8 cc d0 d4 d8 dc 80 55 81 93 a3 b3 c3 d3 e3 f3 03 14 24 34 44 54 64 74 84 94 a4 b4 c4 d4 e4 f4 04 15 25 35 45 55 65 75 85 95 a5 b5 c5 d5 e5 f5 05 16 26 36 36 04 1c b0 b2 b2 b2 b2 b2 b2 02 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink acknowledge +- Final ACK received. +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) changes state from FLOW to WAIT RELEASE +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=WAIT RELEASE EGPRS) starting timer 3193. +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=WAIT RELEASE EGPRS) changes state from WAIT RELEASE to RELEASING +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=RELEASING EGPRS) free +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=RELEASING EGPRS) stopping timer 3193. +PDCH(TS 4, TRX 0): Detaching TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=RELEASING EGPRS), 0 TBFs, USFs = 00, TFIs = 00000000. +Detaching TBF from MS object, TLLI = 0xffeeddcc, TBF = TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=RELEASING EGPRS) +Destroying MS object, TLLI = 0xffeeddcc +********** TBF ends here ********** +Searching for first unallocated TFI: TRX=0 + Found TFI=0. +********** TBF starts here ********** +Allocating DL TBF: MS_CLASS=11/11 +Creating MS object, TLLI = 0x00000000 +Modifying MS object, TLLI = 0x00000000, MS class 0 -> 11 +Modifying MS object, TLLI = 0x00000000, EGPRS MS class 0 -> 11 +Enabled EGPRS for TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS), mode EGPRS +Slot Allocation (Algorithm A) for class 0 +- Skipping TS 0, because not enabled +- Skipping TS 1, because not enabled +- Skipping TS 2, because not enabled +- Skipping TS 3, because not enabled +- Skipping TS 5, because not enabled +- Skipping TS 6, because not enabled +- Skipping TS 7, because not enabled +- Assign downlink TS=4 TFI=0 +PDCH(TS 4, TRX 0): Attaching TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS), 1 TBFs, USFs = 00, TFIs = 00000001. +- Setting Control TS 4 +Attaching TBF to MS object, TLLI = 0x00000000, TBF = TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS) +Allocated TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS): trx = 0, ul_slots = 10, dl_slots = 10 +TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS): Setting EGPRS window size to 64 +TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS) changes state from NULL to FLOW +The MS object cannot fully confirm an unexpected TLLI: 0xffeeddcc, partly confirmed +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) append +New and old TBF are the same TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) start Packet Downlink Assignment (PACCH) ++++++++++++++++++++++++++ TX : Packet Downlink Assignment +++++++++++++++++++++++++ +------------------------- TX : Packet Downlink Assignment ------------------------- +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS): Scheduling polling at FN 13 TS 4 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) Scheduled DL Assignment polling on FN=13, TS=4 +Scheduling control message at RTS for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) (TRX=0, TS=4) +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=0 block=0 data=4f 08 20 00 44 02 00 02 08 04 00 c0 03 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==0) +- Sending new block at BSN 0, CS=MCS-8 +- Dequeue next LLC for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) (len=100) +-- Chunk with length 100 larger than space (68) left in block: copy only remaining space, and we are done +data block (BSN 0, MCS-8): 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f 10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f 20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f 30 31 32 33 34 35 36 37 38 39 3a 3b 3c 3d 3e 3f 40 41 42 43 +- Sending new block at BSN 1, CS=MCS-8 +-- Chunk with length 32 is less than remaining space (68): add length header to to delimit LLC frame +Complete DL frame for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS)len=100 +-- Empty chunk, added LLC dummy command of size 34, drained_since=0 +-- Chunk with length 34 is less than remaining space (35): add length header to to delimit LLC frame +-- No space left, so we are done. +Complete DL frame for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS)len=34 +data block (BSN 1, MCS-8): 40 45 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f 50 51 52 53 54 55 56 57 58 59 5a 5b 5c 5d 5e 5f 60 61 62 63 43 c0 01 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b +- Copying data unit 0 (BSN 0) +- Copying data unit 1 (BSN 1) +- Scheduling Ack/Nack polling, because is was requested explicitly (e.g. first final block sent). +Polling is already scheduled for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) +msg block (BSN 0, MCS-8): 07 00 00 02 58 01 04 08 0c 10 14 18 1c 20 24 28 2c 30 34 38 3c 40 44 48 4c 50 54 58 5c 60 64 68 6c 70 74 78 7c 80 84 88 8c 90 94 98 9c a0 a4 a8 ac b0 b4 b8 bc c0 c4 c8 cc d0 d4 d8 dc e0 e4 e8 ec f0 f4 f8 fc 00 05 09 0d 01 54 44 54 64 74 84 94 a4 b4 c4 d4 e4 f4 04 15 25 35 45 55 65 75 85 95 a5 b5 c5 d5 e5 f5 05 16 26 36 36 04 1c b0 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 02 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=4 block=1 data=07 00 00 02 58 01 04 08 0c 10 14 18 1c 20 24 28 2c 30 34 38 3c 40 44 48 4c 50 54 58 5c 60 64 68 6c 70 74 78 7c 80 84 88 8c 90 94 98 9c a0 a4 a8 ac b0 b4 b8 bc c0 c4 c8 cc d0 d4 d8 dc e0 e4 e8 ec f0 f4 f8 fc 00 05 09 0d 01 54 44 54 64 74 84 94 a4 b4 c4 d4 e4 f4 04 15 25 35 45 55 65 75 85 95 a5 b5 c5 d5 e5 f5 05 16 26 36 36 04 1c b0 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 02 +Received RTS for PDCH: TRX=0 TS=4 FN=8 block_nr=2 scheduling free USF for polling at FN=13 of TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==2) +- Resending BSN 0 +- Resending BSN 1 +- Copying data unit 0 (BSN 0) +- Copying data unit 1 (BSN 1) +- Scheduling Ack/Nack polling, because is was requested explicitly (e.g. first final block sent). +Polling is already scheduled for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) +msg block (BSN 0, MCS-8): 07 00 00 02 78 01 04 08 0c 10 14 18 1c 20 24 28 2c 30 34 38 3c 40 44 48 4c 50 54 58 5c 60 64 68 6c 70 74 78 7c 80 84 88 8c 90 94 98 9c a0 a4 a8 ac b0 b4 b8 bc c0 c4 c8 cc d0 d4 d8 dc e0 e4 e8 ec f0 f4 f8 fc 00 05 09 0d 01 54 44 54 64 74 84 94 a4 b4 c4 d4 e4 f4 04 15 25 35 45 55 65 75 85 95 a5 b5 c5 d5 e5 f5 05 16 26 36 36 04 1c b0 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 02 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=8 block=2 data=07 00 00 02 78 01 04 08 0c 10 14 18 1c 20 24 28 2c 30 34 38 3c 40 44 48 4c 50 54 58 5c 60 64 68 6c 70 74 78 7c 80 84 88 8c 90 94 98 9c a0 a4 a8 ac b0 b4 b8 bc c0 c4 c8 cc d0 d4 d8 dc e0 e4 e8 ec f0 f4 f8 fc 00 05 09 0d 01 54 44 54 64 74 84 94 a4 b4 c4 d4 e4 f4 04 15 25 35 45 55 65 75 85 95 a5 b5 c5 d5 e5 f5 05 16 26 36 36 04 1c b0 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 02 +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==2) +- Resending BSN 0 +- Resending BSN 1 +- Copying data unit 0 (BSN 0) +- Copying data unit 1 (BSN 1) +- Scheduling Ack/Nack polling, because is was requested explicitly (e.g. first final block sent). +Polling is already scheduled for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) +msg block (BSN 0, MCS-8): 07 00 00 02 98 01 04 08 0c 10 14 18 1c 20 24 28 2c 30 34 38 3c 40 44 48 4c 50 54 58 5c 60 64 68 6c 70 74 78 7c 80 84 88 8c 90 94 98 9c a0 a4 a8 ac b0 b4 b8 bc c0 c4 c8 cc d0 d4 d8 dc e0 e4 e8 ec f0 f4 f8 fc 00 05 09 0d 01 54 44 54 64 74 84 94 a4 b4 c4 d4 e4 f4 04 15 25 35 45 55 65 75 85 95 a5 b5 c5 d5 e5 f5 05 16 26 36 36 04 1c b0 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 02 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=13 block=3 data=07 00 00 02 98 01 04 08 0c 10 14 18 1c 20 24 28 2c 30 34 38 3c 40 44 48 4c 50 54 58 5c 60 64 68 6c 70 74 78 7c 80 84 88 8c 90 94 98 9c a0 a4 a8 ac b0 b4 b8 bc c0 c4 c8 cc d0 d4 d8 dc e0 e4 e8 ec f0 f4 f8 fc 00 05 09 0d 01 54 44 54 64 74 84 94 a4 b4 c4 d4 e4 f4 04 15 25 35 45 55 65 75 85 95 a5 b5 c5 d5 e5 f5 05 16 26 36 36 04 1c b0 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 02 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink acknowledge +- Final ACK received. +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) changes state from FLOW to WAIT RELEASE +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=WAIT RELEASE EGPRS) starting timer 3193. +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=WAIT RELEASE EGPRS) changes state from WAIT RELEASE to RELEASING +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=RELEASING EGPRS) free +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=RELEASING EGPRS) stopping timer 3193. +PDCH(TS 4, TRX 0): Detaching TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=RELEASING EGPRS), 0 TBFs, USFs = 00, TFIs = 00000000. +Detaching TBF from MS object, TLLI = 0xffeeddcc, TBF = TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=RELEASING EGPRS) +Destroying MS object, TLLI = 0xffeeddcc +********** TBF ends here ********** +Searching for first unallocated TFI: TRX=0 + Found TFI=0. +********** TBF starts here ********** +Allocating DL TBF: MS_CLASS=11/11 +Creating MS object, TLLI = 0x00000000 +Modifying MS object, TLLI = 0x00000000, MS class 0 -> 11 +Modifying MS object, TLLI = 0x00000000, EGPRS MS class 0 -> 11 +Enabled EGPRS for TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS), mode EGPRS +Slot Allocation (Algorithm A) for class 0 +- Skipping TS 0, because not enabled +- Skipping TS 1, because not enabled +- Skipping TS 2, because not enabled +- Skipping TS 3, because not enabled +- Skipping TS 5, because not enabled +- Skipping TS 6, because not enabled +- Skipping TS 7, because not enabled +- Assign downlink TS=4 TFI=0 +PDCH(TS 4, TRX 0): Attaching TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS), 1 TBFs, USFs = 00, TFIs = 00000001. +- Setting Control TS 4 +Attaching TBF to MS object, TLLI = 0x00000000, TBF = TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS) +Allocated TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS): trx = 0, ul_slots = 10, dl_slots = 10 +TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS): Setting EGPRS window size to 64 +TBF(TFI=0 TLLI=0x00000000 DIR=DL STATE=NULL EGPRS) changes state from NULL to FLOW +The MS object cannot fully confirm an unexpected TLLI: 0xffeeddcc, partly confirmed +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) append +New and old TBF are the same TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) start Packet Downlink Assignment (PACCH) ++++++++++++++++++++++++++ TX : Packet Downlink Assignment +++++++++++++++++++++++++ +------------------------- TX : Packet Downlink Assignment ------------------------- +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS): Scheduling polling at FN 13 TS 4 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) Scheduled DL Assignment polling on FN=13, TS=4 +Scheduling control message at RTS for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) (TRX=0, TS=4) +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=0 block=0 data=4f 08 20 00 44 02 00 02 08 04 00 c0 03 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==0) +- Sending new block at BSN 0, CS=MCS-9 +- Dequeue next LLC for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) (len=100) +-- Chunk with length 100 larger than space (74) left in block: copy only remaining space, and we are done +data block (BSN 0, MCS-9): 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f 10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f 20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f 30 31 32 33 34 35 36 37 38 39 3a 3b 3c 3d 3e 3f 40 41 42 43 44 45 46 47 48 49 +- Sending new block at BSN 1, CS=MCS-9 +-- Chunk with length 26 is less than remaining space (74): add length header to to delimit LLC frame +Complete DL frame for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS)len=100 +-- Empty chunk, added LLC dummy command of size 46, drained_since=0 +-- Chunk with length 46 is less than remaining space (47): add length header to to delimit LLC frame +-- No space left, so we are done. +Complete DL frame for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS)len=46 +data block (BSN 1, MCS-9): 34 5d 4a 4b 4c 4d 4e 4f 50 51 52 53 54 55 56 57 58 59 5a 5b 5c 5d 5e 5f 60 61 62 63 43 c0 01 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b +- Copying data unit 0 (BSN 0) +- Copying data unit 1 (BSN 1) +- Scheduling Ack/Nack polling, because is was requested explicitly (e.g. first final block sent). +Polling is already scheduled for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) +msg block (BSN 0, MCS-9): 07 00 00 02 00 01 04 08 0c 10 14 18 1c 20 24 28 2c 30 34 38 3c 40 44 48 4c 50 54 58 5c 60 64 68 6c 70 74 78 7c 80 84 88 8c 90 94 98 9c a0 a4 a8 ac b0 b4 b8 bc c0 c4 c8 cc d0 d4 d8 dc e0 e4 e8 ec f0 f4 f8 fc 00 05 09 0d 11 15 19 1d 21 25 41 d3 a5 b4 c4 d4 e4 f4 04 15 25 35 45 55 65 75 85 95 a5 b5 c5 d5 e5 f5 05 16 26 36 36 04 1c b0 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 02 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=4 block=1 data=07 00 00 02 00 01 04 08 0c 10 14 18 1c 20 24 28 2c 30 34 38 3c 40 44 48 4c 50 54 58 5c 60 64 68 6c 70 74 78 7c 80 84 88 8c 90 94 98 9c a0 a4 a8 ac b0 b4 b8 bc c0 c4 c8 cc d0 d4 d8 dc e0 e4 e8 ec f0 f4 f8 fc 00 05 09 0d 11 15 19 1d 21 25 41 d3 a5 b4 c4 d4 e4 f4 04 15 25 35 45 55 65 75 85 95 a5 b5 c5 d5 e5 f5 05 16 26 36 36 04 1c b0 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 02 +Received RTS for PDCH: TRX=0 TS=4 FN=8 block_nr=2 scheduling free USF for polling at FN=13 of TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==2) +- Resending BSN 0 +- Resending BSN 1 +- Copying data unit 0 (BSN 0) +- Copying data unit 1 (BSN 1) +- Scheduling Ack/Nack polling, because is was requested explicitly (e.g. first final block sent). +Polling is already scheduled for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) +msg block (BSN 0, MCS-9): 07 00 00 02 28 01 04 08 0c 10 14 18 1c 20 24 28 2c 30 34 38 3c 40 44 48 4c 50 54 58 5c 60 64 68 6c 70 74 78 7c 80 84 88 8c 90 94 98 9c a0 a4 a8 ac b0 b4 b8 bc c0 c4 c8 cc d0 d4 d8 dc e0 e4 e8 ec f0 f4 f8 fc 00 05 09 0d 11 15 19 1d 21 25 41 d3 a5 b4 c4 d4 e4 f4 04 15 25 35 45 55 65 75 85 95 a5 b5 c5 d5 e5 f5 05 16 26 36 36 04 1c b0 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 02 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=8 block=2 data=07 00 00 02 28 01 04 08 0c 10 14 18 1c 20 24 28 2c 30 34 38 3c 40 44 48 4c 50 54 58 5c 60 64 68 6c 70 74 78 7c 80 84 88 8c 90 94 98 9c a0 a4 a8 ac b0 b4 b8 bc c0 c4 c8 cc d0 d4 d8 dc e0 e4 e8 ec f0 f4 f8 fc 00 05 09 0d 11 15 19 1d 21 25 41 d3 a5 b4 c4 d4 e4 f4 04 15 25 35 45 55 65 75 85 95 a5 b5 c5 d5 e5 f5 05 16 26 36 36 04 1c b0 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 02 +Scheduling data message at RTS for DL TFI=0 (TRX=0, TS=4) prio=3 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink (V(A)==0 .. V(S)==2) +- Resending BSN 0 +- Resending BSN 1 +- Copying data unit 0 (BSN 0) +- Copying data unit 1 (BSN 1) +- Scheduling Ack/Nack polling, because is was requested explicitly (e.g. first final block sent). +Polling is already scheduled for TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) +msg block (BSN 0, MCS-9): 07 00 00 02 50 01 04 08 0c 10 14 18 1c 20 24 28 2c 30 34 38 3c 40 44 48 4c 50 54 58 5c 60 64 68 6c 70 74 78 7c 80 84 88 8c 90 94 98 9c a0 a4 a8 ac b0 b4 b8 bc c0 c4 c8 cc d0 d4 d8 dc e0 e4 e8 ec f0 f4 f8 fc 00 05 09 0d 11 15 19 1d 21 25 41 d3 a5 b4 c4 d4 e4 f4 04 15 25 35 45 55 65 75 85 95 a5 b5 c5 d5 e5 f5 05 16 26 36 36 04 1c b0 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 02 +Sending data request: trx=0 ts=4 sapi=5 arfcn=0 fn=13 block=3 data=07 00 00 02 50 01 04 08 0c 10 14 18 1c 20 24 28 2c 30 34 38 3c 40 44 48 4c 50 54 58 5c 60 64 68 6c 70 74 78 7c 80 84 88 8c 90 94 98 9c a0 a4 a8 ac b0 b4 b8 bc c0 c4 c8 cc d0 d4 d8 dc e0 e4 e8 ec f0 f4 f8 fc 00 05 09 0d 11 15 19 1d 21 25 41 d3 a5 b4 c4 d4 e4 f4 04 15 25 35 45 55 65 75 85 95 a5 b5 c5 d5 e5 f5 05 16 26 36 36 04 1c b0 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 b2 02 +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) downlink acknowledge +- Final ACK received. +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=FLOW EGPRS) changes state from FLOW to WAIT RELEASE +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=WAIT RELEASE EGPRS) starting timer 3193. +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=WAIT RELEASE EGPRS) changes state from WAIT RELEASE to RELEASING +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=RELEASING EGPRS) free +TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=RELEASING EGPRS) stopping timer 3193. +PDCH(TS 4, TRX 0): Detaching TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=RELEASING EGPRS), 0 TBFs, USFs = 00, TFIs = 00000000. +Detaching TBF from MS object, TLLI = 0xffeeddcc, TBF = TBF(TFI=0 TLLI=0xffeeddcc DIR=DL STATE=RELEASING EGPRS) +Destroying MS object, TLLI = 0xffeeddcc +********** TBF ends here ********** diff --git a/tests/tbf/TbfTest.ok b/tests/tbf/TbfTest.ok index 441b444..2a32531 100644 --- a/tests/tbf/TbfTest.ok +++ b/tests/tbf/TbfTest.ok @@ -43,3 +43,14 @@ Testing MCS-7 Testing MCS-8 Testing MCS-9 === end test_tbf_egprs_dl === +=== start test_tbf_egprs_retx_dl === +Testing MCS-1 for retx +Testing MCS-2 for retx +Testing MCS-3 for retx +Testing MCS-4 for retx +Testing MCS-5 for retx +Testing MCS-6 for retx +Testing MCS-7 for retx +Testing MCS-8 for retx +Testing MCS-9 for retx +=== end test_tbf_egprs_retx_dl === -- 1.7.9.5

3 2

[PATCH] Update the function for EGPRS immediate assignment
by Bhargava Abhyankar 12 Apr '16

12 Apr '16

Encode the EGPRS immediate assignment message in uplink when EGPRS is enabled. --- src/bts.cpp | 2 +- src/encoding.cpp | 53 +++++++++++++++++++++++++++++++++++++++++-------- src/encoding.h | 5 +++-- tests/edge/EdgeTest.cpp | 3 ++- 4 files changed, 51 insertions(+), 12 deletions(-) diff --git a/src/bts.cpp b/src/bts.cpp index 2166132..2c23192 100644 --- a/src/bts.cpp +++ b/src/bts.cpp @@ -536,7 +536,7 @@ int BTS::rcv_rach(uint16_t ra, uint32_t Fn, int16_t qta, uint8_t is_11bit, plen = Encoding::write_immediate_assignment( tbf, immediate_assignment, 0, ra, Fn, ta, m_bts.trx[trx_no].arfcn, ts_no, tsc, usf, 0, sb_fn, - m_bts.alpha, m_bts.gamma, -1); + m_bts.alpha, m_bts.gamma, -1, burst); if (plen >= 0) { pcu_l1if_tx_agch(immediate_assignment, plen); diff --git a/src/encoding.cpp b/src/encoding.cpp index 6c50abe..3292c2a 100644 --- a/src/encoding.cpp +++ b/src/encoding.cpp @@ -19,9 +19,9 @@ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +#include <bts.h> #include <encoding.h> #include <gprs_rlcmac.h> -#include <bts.h> #include <tbf.h> #include <gprs_debug.h> @@ -140,11 +140,48 @@ static int write_ia_rest_egprs_uplink( gprs_rlcmac_ul_tbf *tbf, bitvec * dest, unsigned& wp, uint8_t usf, uint32_t fn, - uint8_t alpha, uint8_t gamma, int8_t ta_idx) + uint8_t alpha, uint8_t gamma, int8_t ta_idx, + enum ph_burst_type burst) { - LOGP(DRLCMACUL, LOGL_ERROR, - "EGPRS Packet Uplink Assignment is not yet implemented\n"); - return -EINVAL; + bitvec_write_field(dest, wp, 1, 2); /* LH */ + bitvec_write_field(dest, wp, 0, 2); /* 0 EGPRS Uplink Assignment */ + bitvec_write_field(dest, wp, 0, 5); /* Extended RA **todo** */ + bitvec_write_field(dest, wp, 0, 1); /* Access technology Request */ + + unsigned int ws_enc = (tbf->m_window.ws() - 64) / 32; + + bitvec_write_field(dest, wp, 1, 1); /* single block alloc */ + bitvec_write_field(dest, wp, tbf->tfi(), 5);/* TFI assignment */ + bitvec_write_field(dest, wp, 0, 1); /* polling bit */ + bitvec_write_field(dest, wp, usf, 3); /* USF bit */ + bitvec_write_field(dest, wp, 0, 1); /* USF granularity */ + bitvec_write_field(dest, wp, 0, 1); /* P0 */ + + if (burst == GSM_L1_BURST_TYPE_ACCESS_1) { /* 8-PSK RACH*/ + bitvec_write_field(dest, wp, tbf->current_cs(). + to_num()-1, 4); /*mcs*/ + } else { + bitvec_write_field(dest, wp, GprsCodingScheme::MCS1, 4); /*mcs*/ + } + + bitvec_write_field(dest, wp, tbf->tlli(), 1); /* tlli channel block */ + bitvec_write_field(dest, wp, 0, 1); /* BEP period present */ + bitvec_write_field(dest, wp, 0, 1); /* resegmentation */ + bitvec_write_field(dest, wp, ws_enc, 5);/* egprs window_size */ + + if (alpha) { + bitvec_write_field(dest, wp, 0x1, 1); /* ALPHA =yes */ + bitvec_write_field(dest, wp, alpha, 4); /* ALPHA */ + bitvec_write_field(dest, wp, gamma, 5); /* GAMMA power contrl */ + } else { + bitvec_write_field(dest, wp, 0x0, 1); /* ALPHA = no */ + } + + bitvec_write_field(dest, wp, 0, 1); /* TIMING_ADVANCE_INDEX */ + bitvec_write_field(dest, wp, 0, 1); /* TBF_STARTING_TIME_FLAG */ + bitvec_write_field(dest, wp, 0, 1); /* NULL */ + + return 0; } /* @@ -153,10 +190,10 @@ static int write_ia_rest_egprs_uplink( */ int Encoding::write_immediate_assignment( struct gprs_rlcmac_tbf *tbf, - bitvec * dest, uint8_t downlink, uint8_t ra, + bitvec * dest, uint8_t downlink, uint16_t ra, uint32_t ref_fn, uint8_t ta, uint16_t arfcn, uint8_t ts, uint8_t tsc, uint8_t usf, uint8_t polling, uint32_t fn, uint8_t alpha, - uint8_t gamma, int8_t ta_idx) + uint8_t gamma, int8_t ta_idx, enum ph_burst_type burst) { unsigned wp = 0; int plen; @@ -209,7 +246,7 @@ int Encoding::write_immediate_assignment( else if (as_ul_tbf(tbf) && as_ul_tbf(tbf)->is_egprs_enabled()) rc = write_ia_rest_egprs_uplink(as_ul_tbf(tbf), dest, wp, usf, fn, - alpha, gamma, ta_idx); + alpha, gamma, ta_idx, burst); else rc = write_ia_rest_uplink(as_ul_tbf(tbf), dest, wp, usf, fn, diff --git a/src/encoding.h b/src/encoding.h index 94e9a02..079332d 100644 --- a/src/encoding.h +++ b/src/encoding.h @@ -40,11 +40,12 @@ class Encoding { public: static int write_immediate_assignment( struct gprs_rlcmac_tbf *tbf, - bitvec * dest, uint8_t downlink, uint8_t ra, + bitvec * dest, uint8_t downlink, uint16_t ra, uint32_t ref_fn, uint8_t ta, uint16_t arfcn, uint8_t ts, uint8_t tsc, uint8_t usf, uint8_t polling, uint32_t fn, uint8_t alpha, uint8_t gamma, - int8_t ta_idx); + int8_t ta_idx, + enum ph_burst_type burst = GSM_L1_BURST_TYPE_ACCESS_0); static void write_packet_uplink_assignment( struct gprs_rlcmac_bts *bts, diff --git a/tests/edge/EdgeTest.cpp b/tests/edge/EdgeTest.cpp index 96ea0c1..9138ae7 100644 --- a/tests/edge/EdgeTest.cpp +++ b/tests/edge/EdgeTest.cpp @@ -23,7 +23,6 @@ #include "gprs_debug.h" #include "gprs_coding_scheme.h" #include "decoding.h" -#include "encoding.h" #include "rlc.h" #include "llc.h" @@ -35,10 +34,12 @@ extern "C" { #include <osmocom/core/talloc.h> #include <osmocom/core/utils.h> #include <osmocom/vty/vty.h> +#include <osmocom/gsm/l1sap.h> } #include <errno.h> #include <string.h> +#include "encoding.h" void *tall_pcu_ctx; int16_t spoof_mnc = 0, spoof_mcc = 0; -- 2.5.0

2 3

[PATCH] Handle the encoding of PUAN for CRBB bitmap
by sangamesh sajjan 12 Apr '16

12 Apr '16

This patch includes the changes for encoding of PUAN to handle the CRBB bitmap --- src/encoding.cpp | 103 ++++++++++++++++++++++++++++++++++++++++++------------ src/rlc.cpp | 28 +++++++++++++++ src/rlc.h | 1 + 3 files changed, 109 insertions(+), 23 deletions(-) diff --git a/src/encoding.cpp b/src/encoding.cpp index 6c50abe..e0c29af 100644 --- a/src/encoding.cpp +++ b/src/encoding.cpp @@ -25,6 +25,11 @@ #include <tbf.h> #include <gprs_debug.h> +extern "C" { +#include <osmocom/core/utils.h> +#include <osmocom/core/bitcomp.h> +} + #include <errno.h> #include <string.h> @@ -537,8 +542,6 @@ static void write_packet_ack_nack_desc_egprs( gprs_rlc_ul_window *window, bool is_final) { int urbb_len = 0; - int crbb_len = 0; - int len; bool bow = true; bool eow = true; int ssn = window->mod_sns(window->v_q() + 1); @@ -546,9 +549,55 @@ static void write_packet_ack_nack_desc_egprs( int esn_crbb = window->mod_sns(ssn - 1); int rest_bits = dest->data_len * 8 - wp; - if (num_blocks > 0) + uint8_t rbb[128] = {'\0'}; + uint8_t iter = 0; + uint8_t crbb_len = 0; + uint8_t len = 0; + int is_compressed = 0; + uint16_t ucmp_bmplan = window->update_egprs_rbb(rbb); + uint8_t crbb_bitmap[127]; + bool bitmap_len = 0; + + LOGP(DRLCMACUL, LOGL_DEBUG, "Uncompressed bitmap length after" + "rbb update %d\n", ucmp_bmplan); + + rbb[128] = 0; + bitvec out; + + out.data = rbb; + out.cur_bit = 0; + out.data_len = sizeof(rbb); + /* if [V(R) -1] modulo SNS is explicitly included in the bitmap, + set eow =1; + + * If V(Q) equals V(R), then BOW and EOW bit shall be set to the value '1' + * and no need to send bitmap in ack nack, hence no compression + */ + if (window->v_q() == window->v_r()) { + + LOGP(DRLCMACUL, LOGL_DEBUG, "write_packet_ack_nack_desc_egprs:" + "v(Q)=V(R), hence no compression" + " %d %d\n", window->v_q(), window->v_r()); + eow = bow = 1; + bitmap_len = 1; + } + /* Compression part, Try compression only if it is greater than or equal + * to Window size Otherwise encode it in uncompressed + */ + if ((ucmp_bmplan >= (rest_bits - 15)) && (!bitmap_len)) { + + is_compressed = osmo_bitmap_compress(&out, //Uncompressed bitmap + &ucmp_bmplan, //Uncompressed bitmap len + &crbb_len, //Compressed bitmap len + crbb_bitmap + ); + } + + if (num_blocks > 0) { /* V(Q) is NACK and omitted -> SSN = V(Q) + 1 */ num_blocks -= 1; + urbb_len = num_blocks; + } if (num_blocks > window->ws()) num_blocks = window->ws(); @@ -556,17 +605,10 @@ static void write_packet_ack_nack_desc_egprs( if (num_blocks > rest_bits) { eow = false; urbb_len = rest_bits; - /* TODO: use compression, start encoding bits and stop when the - * space is exhausted. Use the first combination that encodes - * all bits. If there is none, use the combination that encodes - * the largest number of bits (e.g. by setting num_blocks to the - * max and repeating the construction). - */ } else if (num_blocks > rest_bits - 9) { /* union bit and length field take 9 bits */ eow = false; urbb_len = rest_bits - 9; - /* TODO: use compression (see above) */ } if (urbb_len + crbb_len == rest_bits) @@ -588,20 +630,35 @@ static void write_packet_ack_nack_desc_egprs( bitvec_write_field(dest, wp, bow, 1); // BEGINNING_OF_WINDOW bitvec_write_field(dest, wp, eow, 1); // END_OF_WINDOW bitvec_write_field(dest, wp, ssn, 11); // STARTING_SEQUENCE_NUMBER - bitvec_write_field(dest, wp, 0, 1); // 0: don't have CRBB - /* TODO: Add CRBB support */ - - LOGP(DRLCMACUL, LOGL_DEBUG, - " - EGPRS URBB, len = %d, SSN = %d, ESN_CRBB = %d, " - "SNS = %d, WS = %d, V(Q) = %d, V(R) = %d%s%s\n", - urbb_len, ssn, esn_crbb, - window->sns(), window->ws(), window->v_q(), window->v_r(), - bow ? ", BOW" : "", eow ? ", EOW" : ""); - for (int i = urbb_len; i > 0; i--) { - /* Set bit at the appropriate position (see 3GPP TS 04.60 12.3.1) */ - bool is_ack = window->m_v_n.is_received(esn_crbb + i); - bitvec_write_field(dest, wp, is_ack, 1); + if (is_compressed) { + bitvec_write_field(dest, wp, 1, 1); // CRBB_Exist + bitvec_write_field(dest, wp, crbb_len, 7); // CRBB_LENGTH + uint8_t crbb_start_clr_code = (0x80 & crbb_bitmap[0])>>7; + bitvec_write_field(dest, wp, crbb_start_clr_code, 1); // CRBB_clr_code + + while (crbb_len != 0) { + if (crbb_len > 8) { + bitvec_write_field(dest, wp, crbb_bitmap[iter], 8); + crbb_len = crbb_len - 8; + iter++; + } else{ + bitvec_write_field(dest, wp, crbb_bitmap[iter], crbb_len); + crbb_len = 0; + } + } + } else{ + LOGP(DRLCMACUL, LOGL_DEBUG, + " - EGPRS URBB, len = %d, SSN = %d, ESN_CRBB = %d, " + "SNS = %d, WS = %d, V(Q) = %d, V(R) = %d%s%s\n", + urbb_len, ssn, esn_crbb, + window->sns(), window->ws(), window->v_q(), window->v_r(), + bow ? ", BOW" : "", eow ? ", EOW" : ""); + for (int i = urbb_len; i > 0; i--) { + /* Set bit at the appropriate position (see 3GPP TS 04.60 12.3.1) */ + bool is_ack = window->m_v_n.is_received(esn_crbb + i); + bitvec_write_field(dest, wp, is_ack, 1); + } } } diff --git a/src/rlc.cpp b/src/rlc.cpp index 6770043..c201713 100644 --- a/src/rlc.cpp +++ b/src/rlc.cpp @@ -83,6 +83,34 @@ int gprs_rlc_dl_window::mark_for_resend() return resend; } +/* Update the receive block bitmap */ +uint16_t gprs_rlc_ul_window::update_egprs_rbb(uint8_t *rbb) +{ + int i; + uint16_t bsn; + int8_t bitmask = 0x80; + int8_t pos = 0; + int8_t bit_pos = 0; + for (i = 0, bsn = (v_q()+1); ((bsn < (v_r())) && (i < ws())); i++, + bsn = this->mod_sns(bsn + 1)) { + if (m_v_n.is_received(bsn)) { + rbb[pos] = rbb[pos] | bitmask; + } else { + rbb[pos] = rbb[pos] & (~bitmask); + } + bitmask = bitmask >> 1; + bit_pos++; + bit_pos = bit_pos % 8; + if(bit_pos == 0) { + pos++; + bitmask = 0x80; + } + } + LOGP(DRLCMACUL, LOGL_DEBUG, "V(N):in update_egprs_rbb \"%s\"" + "R=Received I=Invalid\n", rbb); + return i; +} + int gprs_rlc_dl_window::count_unacked() { uint16_t unacked = 0; diff --git a/src/rlc.h b/src/rlc.h index 8f75588..83bc5dc 100644 --- a/src/rlc.h +++ b/src/rlc.h @@ -260,6 +260,7 @@ struct gprs_rlc_ul_window: public gprs_rlc_window { bool is_received(uint16_t bsn) const; void update_rbb(char *rbb); + uint16_t update_egprs_rbb(uint8_t *rbb); void raise_v_r_to(int moves); void raise_v_r(const uint16_t bsn); uint16_t raise_v_q(); -- 1.7.9.5

2 1

[PATCH] Update parameters in osmo-bts for 11 bit RACH
by Bhargava Abhyankar 12 Apr '16

12 Apr '16

Based on the indication from L1, number of bits in RACH and burst type is determined. Appropriate parameters are filled in osmo-bts. These parameters are sent to osmo-pcu for processing of the RACH. --- src/osmo-bts-sysmo/l1_if.c | 23 +++++++++++++++-------- 1 file changed, 15 insertions(+), 8 deletions(-) diff --git a/src/osmo-bts-sysmo/l1_if.c b/src/osmo-bts-sysmo/l1_if.c index a8f957c..1aec989 100644 --- a/src/osmo-bts-sysmo/l1_if.c +++ b/src/osmo-bts-sysmo/l1_if.c @@ -857,7 +857,7 @@ static int handle_ph_ra_ind(struct femtol1_hdl *fl1, GsmL1_PhRaInd_t *ra_ind, struct gsm_lchan *lchan; struct osmo_phsap_prim *l1sap; uint32_t fn; - uint8_t ra, acc_delay = 0; + uint16_t ra, acc_delay = 0, is_11bit = 0, burst_type = 0; int rc; /* increment number of busy RACH slots, if required */ @@ -879,16 +879,25 @@ static int handle_ph_ra_ind(struct femtol1_hdl *fl1, GsmL1_PhRaInd_t *ra_ind, btsb->load.rach.access++; dump_meas_res(LOGL_DEBUG, &ra_ind->measParam); + burst_type = ra_ind->burstType; - if (ra_ind->msgUnitParam.u8Size != 1) { + if ((ra_ind->msgUnitParam.u8Size != 1) && + (ra_ind->msgUnitParam.u8Size != 2)) { LOGP(DL1C, LOGL_ERROR, "PH-RACH-INDICATION has %d bits\n", ra_ind->sapi); msgb_free(l1p_msg); return 0; } + if (ra_ind->msgUnitParam.u8Size == 2) { + is_11bit = 1; + memcpy(&ra, ra_ind->msgUnitParam.u8Buffer, 2); + } else { + is_11bit = 0; + ra = ra_ind->msgUnitParam.u8Buffer[0]; + } + fn = ra_ind->u32Fn; - ra = ra_ind->msgUnitParam.u8Buffer[0]; rc = msgb_trim(l1p_msg, sizeof(*l1sap)); if (rc < 0) MSGB_ABORT(l1p_msg, "No room for primitive data\n"); @@ -898,11 +907,8 @@ static int handle_ph_ra_ind(struct femtol1_hdl *fl1, GsmL1_PhRaInd_t *ra_ind, l1sap->u.rach_ind.ra = ra; l1sap->u.rach_ind.acc_delay = acc_delay; l1sap->u.rach_ind.fn = fn; - - /* Initialising the parameters needs to be handled when 11 bit RACH - * is supported */ - l1sap->u.rach_ind.is_11bit = 0; - l1sap->u.rach_ind.burst = GSM_L1_BURST_TYPE_ACCESS_0; + l1sap->u.rach_ind.is_11bit = is_11bit; /* no of bits in 11 bit RACH */ + l1sap->u.rach_ind.burst = burst_type; /* type of burst */ if (!lchan || lchan->ts->pchan == GSM_PCHAN_CCCH || lchan->ts->pchan == GSM_PCHAN_CCCH_SDCCH4) @@ -911,6 +917,7 @@ static int handle_ph_ra_ind(struct femtol1_hdl *fl1, GsmL1_PhRaInd_t *ra_ind, l1sap->u.rach_ind.chan_nr = gsm_lchan2chan_nr(lchan); return l1sap_up(trx, l1sap); + } /* handle any random indication from the L1 */ -- 2.5.0

2 2

[PATCH] Add compression algorithm based on T.4 procedure
by sangamesh sajjan 12 Apr '16

12 Apr '16

This patch includes the changes for compression algorithm and the compression is carried out using T.4 run length coding and the code words used are based on 3GPP 44.060 --- include/osmocom/core/bitcomp.h | 7 +++ src/bitcomp.c | 129 ++++++++++++++++++++++++++++++++++++++++ 2 files changed, 136 insertions(+) diff --git a/include/osmocom/core/bitcomp.h b/include/osmocom/core/bitcomp.h index 89eccbc..c5c223c 100644 --- a/include/osmocom/core/bitcomp.h +++ b/include/osmocom/core/bitcomp.h @@ -39,4 +39,11 @@ int osmo_t4_encode(struct bitvec *bv); int osmo_t4_decode(const struct bitvec *in, bool cc, struct bitvec *out); +#define MOD64(X) ((X + 64) & 0x3F) +int osmo_bitmap_compress( + struct bitvec *rbb_vec, + uint16_t *ucmp_bmplen, //Uncompressed bitmap len + uint8_t *cmp_bmplen, //Compressed bitmap len + uint8_t *crbb_bitmap //Compressed bitmap + ); /*! @} */ diff --git a/src/bitcomp.c b/src/bitcomp.c index bf35927..f3326b2 100644 --- a/src/bitcomp.c +++ b/src/bitcomp.c @@ -476,5 +476,134 @@ int osmo_t4_encode(struct bitvec *bv) } return -1; } +void compress_bitmap( + uint16_t *run_len_cnt, /* cnt: run length count */ + uint16_t *codewrd_bitmap, /* code word */ + uint8_t *codewrd_len, /* number of bits in the code word */ + uint8_t *cbmbuf, /* bitmap buffer to put code word in */ + uint16_t *cstrtbits, /* start bits to put codeword. start from + * 0, the first bit in the first octets + * and increment without octets + * consideration. i.e. can be more than 7. + */ + uint8_t *cstrtocts, /* start octets to put codeword. start from 0*/ + uint8_t clr_code) +{ + int i = 0; + uint16_t bitsleft = 0; + uint16_t temp = 0; + *codewrd_bitmap = 0; + *codewrd_len = 0; + + if ((*run_len_cnt) >= 64) { + for (i = 0; i < 15; i++) { + if (t4_make_up_ind[i] == *run_len_cnt) { + *codewrd_bitmap = t4_make_up[clr_code][i]; + *codewrd_len = t4_make_up_length[clr_code][i]; + } + } + } else { + *codewrd_bitmap = t4_term[clr_code][*run_len_cnt]; + *codewrd_len = t4_term_length[clr_code][*run_len_cnt]; + } + bitsleft = *codewrd_len; + /* Move the codeword_bitmap to left in two bytes*/ + (*codewrd_bitmap) = (*codewrd_bitmap)<<(16-(*codewrd_len)); + + while (bitsleft != 0) { + /* Bring left most bits to right and start shifting by cstrtbits, + * we get each bit to update in compressed buffer + */ + temp = (((*codewrd_bitmap) & 0x8000)>>15)<<(7-(*cstrtbits)); + cbmbuf[*cstrtocts] = cbmbuf[*cstrtocts]|temp; + + (*codewrd_bitmap) = (*codewrd_bitmap)<<1; + (*cstrtbits)++; + bitsleft--; + if ((*cstrtbits) >= 8) { + (*cstrtbits) = (*cstrtbits)-8; + (*cstrtocts)++; + /* init buf */ + cbmbuf[*cstrtocts] = 0x00; + } + } +} + +int osmo_bitmap_compress( + struct bitvec *rbb_vec, + uint16_t *ucmp_bmplen, /* Uncompressed bitmap len */ + uint8_t *cmp_bmplen, /* Compressed bitmap len */ + uint8_t *crbb_bitmap /* Compressed bitmap */ + ) +{ + char run_len_bit; + int buflen = *ucmp_bmplen; + uint16_t rlen; + uint16_t temprl = 0; + uint16_t cbmap; /* Compressed code word */ + uint8_t nbits; /* Length of code word */ + uint16_t cstrtbits = 0; + uint8_t cstrtocts = 0; + uint16_t uclen = 0; + uint8_t clen = 0; + uint8_t clr_code = 0; + + run_len_bit = (rbb_vec->data[0] & 0x80)>>7; + while (buflen > 0) { + temprl = 0; + /* Find Run length */ + if (run_len_bit == 1) + rlen = bitvec_rl(rbb_vec, true); + else + rlen = bitvec_rl(rbb_vec, false); + + buflen = buflen - rlen; + /* if rlen> 64 need 2 code words */ + //Compress the bits + if (run_len_bit == 0) { + if (rlen >= 64) { + temprl = (rlen/64)*64; + compress_bitmap(&temprl, &cbmap, &nbits, + crbb_bitmap, &cstrtbits, + &cstrtocts, clr_code); + } + temprl = MOD64(rlen); + compress_bitmap(&temprl, + &cbmap, &nbits, crbb_bitmap, + &cstrtbits, &cstrtocts, clr_code); + + /* next time the run length will be Ones */ + run_len_bit = 1; + } else { + if (rlen >= 64) { + temprl = (rlen/64)*64; + clr_code = 1; + compress_bitmap(&temprl, &cbmap, + &nbits, crbb_bitmap, + &cstrtbits, &cstrtocts, + clr_code); + } + temprl = MOD64(rlen); + compress_bitmap(&temprl, &cbmap, + &nbits, crbb_bitmap, + &cstrtbits, &cstrtocts, clr_code); + + /* next time the run length will be Zeros */ + run_len_bit = 0; + } + uclen = uclen + (rlen); + clen = clen + nbits; + } + *cmp_bmplen = clen; + if (clen >= uclen) { + /* No Gain is observed, So no need to compress, copy original + * bitmap in uncompressed bitmap + */ + return 0; + } else { + /* Add compressed bitmap to final buffer */ + return 1; + } +} -- 1.7.9.5

2 1

RE: Regarding integration of NURAN L1 1.0
by Prasad Kaup 11 Apr '16

11 Apr '16

Hello, Thanks for your inputs. We are starting integration of NURAN 1.0 for CS , SMS and GPRS/ EGPRS. We would like to know the steps to bring up the board with all software elements . We understand that osmo-bts/osmo-pcu and osmo-bsc will be cross compiled. As a first step we would like to know the details of cross compilation and tool chain to be used for osmo-bts / osmo-pcu and osmo-bsc . Also in the test setup described at http://openbsc.osmocom.org/trac , we see that there are third party components like MSC , SGSN and GGSN mentioned. Let us know what components are used for sample integration test setup. Regards Prasad -----Original Message----- From: osmocom-net-gprs [mailto:osmocom-net-gprs-bounces@lists.osmocom.org] On Behalf Of Neels Hofmeyr Sent: Monday, March 14, 2016 5:43 AM To: Prasad Kaup <Prasad.Kaup(a)radisys.com> Cc: osmocom-net-gprs(a)lists.osmocom.org; Yves Godin <Yves.Godin(a)nutaq.com> Subject: Re: Regarding integration of NURAN L1 1.0 Hi Prasad, AFAIK you need the header files with matching version number to your sysmoBTS's firmware version from http://git.sysmocom.de/sysmo-bts/layer1-api/ I'm a bit new on building osmo-bts myself, so I can't yet say precisely which ./configure options you need to pass; but do take a look at ./configure --help Hope this helps... ~Neels

4 14

Re: OpenGGSN
by Terje Kristoffer Hybbestad Skow 11 Apr '16

11 Apr '16

Hi again. I'm still having problem really getting the sgsnemu and ggsn to talk to each other. When I use 127.0.0.1 and 127.0.0.2 as the listen and remote for the sgsnemu and 127.0.0.2 as listen and 127.0.0.0/24 as network in the ggsn conf, the sgsnemu says "Received echo response Received create PDP context response. IP address: 127.0.0.2" and then nothing happens. When using two computers, one running ggsn and one sgsnemu with the ip-addresses as 192.168.1.14 and 192.168.1.11 respectively, the sgsnemu doesn't seem to get connented. It prints out "idletime.tv_sec 3, idleTime.tv_usec 0" over and over, and "Echo Request timed out". The picture attached is from wireshark on the ggsn computer. I lookt at the pcap you send and it looks like what I would like for my setup. You talk mentioned using symoBTS how much does it cost? And how long is a delivery for it? Regards Terje Skow 2016-03-01 12:56 GMT+01:00 Terje Kristoffer Skow <terjeks(a)stud.ntnu.no>: > Thank you very much!! > > I will have some work getting through this, but I recon I'll have some > more questions later. > > Again thank you > > 2016-03-01 12:39 GMT+01:00 Neels Hofmeyr <nhofmeyr(a)sysmocom.de>: > >> On Tue, Mar 01, 2016 at 11:12:01AM +0100, Terje Kristoffer Hybbestad Skow >> wrote: >> > The "logfile /tmp/foo" did gave an error message saying "unrecognized >> > option". >> >> It seems the logfile option was added on 2014-03-23 with commit >> 9c0ff4fafe4276396125a52c89d36967566fe08c. It may make sense if you build >> your osmocom stack from the git sources to benefit from the latest fixes. >> >> See http://git.osmocom.org, specifically you'd probably want to clone >> and build >> >> git://git.osmocom.org/libosmocore >> git://git.osmocom.org/openggsn >> >> The build steps being for example >> >> autoreconf -fi >> ./configure >> make >> sudo make install >> >> >> > I'm going to look at DNS packets going through a GGSN to try and find >> ways >> > to detect DNS tunnels, do you have any recommendations how to do this? >> > I do not have the time or resources to use real UE's so I hope to >> simulate >> > it on a computer using VMs or something like that. >> >> > I have looked at this: >> http://openbsc.osmocom.org/trac/wiki/OpenBSC_GPRS as >> >> The BTS is for communicating with a phone over the air interface. Abis and >> osmo-nitb are used for voice calls only. The SGSN is needed for real >> networks, >> you should be fine with the sgsnemu. So all you need is sgsnemu and >> openggsn. >> >> You want to figure out how to use the sgsnemu, starting with a route into >> the >> tunnel device that sgsnemu opens up. So you need to look at the 'ip route' >> commands (if you're on linux). I guess you won't need VMs; granted, it >> might >> make it easier to avoid circular routes (to IP addresses that should only >> be >> seen on the GGSN side), but certainly not a necessary prerequisite. >> >> I tried to ping through the sgsnemu tunnel once but saw, as I mentioned, >> that >> the GGSN thwarts GTP messages without a proper context being created >> first. It >> shouldn't be too hard, but I haven't investigated further. So you'd want >> to >> understand the GTP Ctrl & User messages to setup a PGP context (TEIs and >> stuff), and figure out how sgsnemu might make your life easier in that >> regard. >> You probably want to read ETSI 29.060 to figure out GTP: >> >> http://www.etsi.org/deliver/etsi_ts/129000_129099/129060/03.19.00_60/ts_129… >> You may find attached pcap file interesting (open in wireshark and note >> that >> the DNS queries are transmitted over GTP between SGSN and GGSN even though >> wireshark tends to show only the DNS and src/dest enclosed in the GTP). >> And again, you may look at >> http://git.osmocom.org/openbsc/tree/openbsc/tests/gtphub/gtphub_test.c >> about simplistic code examples of composing a PGP context conversation. >> >> If you'd like any more answers to questions you didn't ask ;) >> just give us a shout... >> >> ~Neels >> >> -- >> - Neels Hofmeyr <nhofmeyr(a)sysmocom.de> http://www.sysmocom.de/ >> ======================================================================= >> * sysmocom - systems for mobile communications GmbH >> * Alt-Moabit 93 >> * 10559 Berlin, Germany >> * Sitz / Registered office: Berlin, HRB 134158 B >> * Geschäftsführer / Managing Directors: Holger Freyther, Harald Welte >> > >

2 1

[PATCH] Handle GPRS 11 bit RACH in osmo-pcu
by Bhargava Abhyankar 05 Apr '16

05 Apr '16

A function is_single_block is added to get request type of RACH. GPRS 11 bit RACH is handled. --- src/bts.cpp | 56 ++++++++++++++++++++++++++++++++++++++++++++++---------- src/bts.h | 2 ++ 2 files changed, 48 insertions(+), 10 deletions(-) diff --git a/src/bts.cpp b/src/bts.cpp index 62b00c4..2166132 100644 --- a/src/bts.cpp +++ b/src/bts.cpp @@ -473,18 +473,11 @@ int BTS::rcv_rach(uint16_t ra, uint32_t Fn, int16_t qta, uint8_t is_11bit, uint16_t ta; rach_frame(); - LOGP(DRLCMAC, LOGL_DEBUG, "MS requests UL TBF on RACH, so we provide " "one:\n"); - if ((ra & 0xf8) == 0x70) { - LOGP(DRLCMAC, LOGL_DEBUG, "MS requests single block " - "allocation\n"); - sb = 1; - } else if (m_bts.force_two_phase) { - LOGP(DRLCMAC, LOGL_DEBUG, "MS requests single phase access, " - "but we force two phase access\n"); - sb = 1; - } + + sb = is_single_block(ra, burst, is_11bit); + if (qta < 0) qta = 0; if (qta > 252) @@ -556,6 +549,49 @@ int BTS::rcv_rach(uint16_t ra, uint32_t Fn, int16_t qta, uint8_t is_11bit, return 0; } +uint8_t BTS::is_single_block(uint16_t ra, enum ph_burst_type burst, + uint8_t is_11bit) +{ + uint8_t sb = 0; + + if ((is_11bit == 0) && (burst == GSM_L1_BURST_TYPE_ACCESS_0)) { + if ((ra & 0xf8) == 0x70) { + LOGP(DRLCMAC, LOGL_DEBUG, "MS requests single block " + "allocation\n"); + sb = 1; + } else if (m_bts.force_two_phase) { + LOGP(DRLCMAC, LOGL_DEBUG, "MS requests single phase " + "access, but we force two phase access\n"); + sb = 1; + } + } else if ((is_11bit == 1) && (burst == GSM_L1_BURST_TYPE_ACCESS_0)) { + if ((ra & 0x7e0) == 0x0600) { + LOGP(DRLCMAC, LOGL_DEBUG, "GPRS 11 bit RACH received. " + "MS requests single block allocation\n"); + sb = 1; + } else if (m_bts.force_two_phase) { + LOGP(DRLCMAC, LOGL_DEBUG, "GPRS 11 bit RACH received." + "MS requests single phase access but we force " + "two phase access\n"); + sb = 1; + } + } else if ((is_11bit == 1) && ((burst == GSM_L1_BURST_TYPE_ACCESS_1) || + (burst == GSM_L1_BURST_TYPE_ACCESS_2))) { + if ((ra & 0x7e0) == 0x0600) { + LOGP(DRLCMAC, LOGL_DEBUG, "EGPRS 11 bit RACH received. " + "MS requests single block allocation\n"); + sb = 1; + } else if (m_bts.force_two_phase) { + LOGP(DRLCMAC, LOGL_DEBUG, "EGPRS 11 bit RACH received. " + "MS requests single phase access but we force " + "two phase access\n"); + sb = 1; + } + } + + return sb; +} + /* depending on the current TBF, we assign on PACCH or AGCH */ void BTS::trigger_dl_ass( struct gprs_rlcmac_dl_tbf *dl_tbf, diff --git a/src/bts.h b/src/bts.h index f0fe970..1c5b749 100644 --- a/src/bts.h +++ b/src/bts.h @@ -276,6 +276,8 @@ public: int tfi_find_free(enum gprs_rlcmac_tbf_direction dir, uint8_t *_trx, int8_t use_trx); int rcv_imm_ass_cnf(const uint8_t *data, uint32_t fn); + uint8_t is_single_block(uint16_t ra, enum ph_burst_type burst, + uint8_t is_11bit); int rcv_rach(uint16_t ra, uint32_t Fn, int16_t qta, uint8_t is_11bit, enum ph_burst_type burst); -- 2.5.0

1 0

[PATCH] Change interface in osmo-pcu for 11 bit RACH
by Bhargava Abhyankar 01 Apr '16

01 Apr '16

Interface structure between osmo-bts and osmo-pcu is updated with the parameters to differentiate the type of RACH and further support 11 bit RACH. The function prototype and definitions are changed accordingly. Interface version number is increased. --- src/bts.cpp | 3 ++- src/bts.h | 4 +++- src/pcu_l1_if.cpp | 3 ++- src/pcuif_proto.h | 8 ++++++-- tests/tbf/TbfTest.cpp | 5 +++-- 5 files changed, 16 insertions(+), 7 deletions(-) diff --git a/src/bts.cpp b/src/bts.cpp index 715fb51..62b00c4 100644 --- a/src/bts.cpp +++ b/src/bts.cpp @@ -459,7 +459,8 @@ int BTS::rcv_imm_ass_cnf(const uint8_t *data, uint32_t fn) return 0; } -int BTS::rcv_rach(uint8_t ra, uint32_t Fn, int16_t qta) +int BTS::rcv_rach(uint16_t ra, uint32_t Fn, int16_t qta, uint8_t is_11bit, + enum ph_burst_type burst) { struct gprs_rlcmac_ul_tbf *tbf = NULL; uint8_t trx_no, ts_no = 0; diff --git a/src/bts.h b/src/bts.h index c975304..f0fe970 100644 --- a/src/bts.h +++ b/src/bts.h @@ -28,6 +28,7 @@ extern "C" { #include <osmocom/core/stat_item.h> #include <osmocom/core/timer.h> #include <osmocom/core/gsmtap.h> +#include <osmocom/gsm/l1sap.h> } #include "poll_controller.h" @@ -275,7 +276,8 @@ public: int tfi_find_free(enum gprs_rlcmac_tbf_direction dir, uint8_t *_trx, int8_t use_trx); int rcv_imm_ass_cnf(const uint8_t *data, uint32_t fn); - int rcv_rach(uint8_t ra, uint32_t Fn, int16_t qta); + int rcv_rach(uint16_t ra, uint32_t Fn, int16_t qta, uint8_t is_11bit, + enum ph_burst_type burst); void trigger_dl_ass(gprs_rlcmac_dl_tbf *tbf, gprs_rlcmac_tbf *old_tbf); void snd_dl_ass(gprs_rlcmac_tbf *tbf, uint8_t poll, const char *imsi); diff --git a/src/pcu_l1_if.cpp b/src/pcu_l1_if.cpp index 19dda5c..dbf713c 100644 --- a/src/pcu_l1_if.cpp +++ b/src/pcu_l1_if.cpp @@ -313,7 +313,8 @@ static int pcu_rx_rach_ind(struct gsm_pcu_if_rach_ind *rach_ind) case PCU_IF_SAPI_RACH: rc = BTS::main_bts()->rcv_rach( rach_ind->ra, rach_ind->fn, - rach_ind->qta); + rach_ind->qta, rach_ind->is_11bit, + rach_ind->burst); break; default: LOGP(DL1IF, LOGL_ERROR, "Received PCU rach request with " diff --git a/src/pcuif_proto.h b/src/pcuif_proto.h index 9d740ac..eb11770 100644 --- a/src/pcuif_proto.h +++ b/src/pcuif_proto.h @@ -1,7 +1,9 @@ #ifndef _PCUIF_PROTO_H #define _PCUIF_PROTO_H -#define PCU_IF_VERSION 0x05 +#include <osmocom/gsm/l1sap.h> + +#define PCU_IF_VERSION 0x06 /* msg_type */ #define PCU_IF_MSG_DATA_REQ 0x00 /* send data to given channel */ @@ -64,10 +66,12 @@ struct gsm_pcu_if_rts_req { struct gsm_pcu_if_rach_ind { uint8_t sapi; - uint8_t ra; + uint16_t ra; int16_t qta; uint32_t fn; uint16_t arfcn; + uint8_t is_11bit; + enum ph_burst_type burst; } __attribute__ ((packed)); struct gsm_pcu_if_info_trx { diff --git a/tests/tbf/TbfTest.cpp b/tests/tbf/TbfTest.cpp index e1be844..1123ac6 100644 --- a/tests/tbf/TbfTest.cpp +++ b/tests/tbf/TbfTest.cpp @@ -35,6 +35,7 @@ extern "C" { #include <osmocom/core/talloc.h> #include <osmocom/core/utils.h> #include <osmocom/vty/vty.h> +#include <osmocom/gsm/l1sap.h> } #include <errno.h> @@ -552,7 +553,7 @@ static gprs_rlcmac_ul_tbf *establish_ul_tbf_single_phase(BTS *the_bts, tfi = the_bts->tfi_find_free(GPRS_RLCMAC_UL_TBF, &trx_no, -1); - the_bts->rcv_rach(0x03, *fn, qta); + the_bts->rcv_rach(0x03, *fn, qta, 0, GSM_L1_BURST_TYPE_ACCESS_0); ul_tbf = the_bts->ul_tbf_by_tfi(tfi, trx_no, ts_no); OSMO_ASSERT(ul_tbf != NULL); @@ -639,7 +640,7 @@ static gprs_rlcmac_ul_tbf *establish_ul_tbf_two_phase(BTS *the_bts, request_dl_rlc_block(bts, trx_no, ts_no, 0, fn); /* simulate RACH, this sends an Immediate Assignment Uplink on the AGCH */ - the_bts->rcv_rach(0x73, rach_fn, qta); + the_bts->rcv_rach(0x73, rach_fn, qta, 0, GSM_L1_BURST_TYPE_ACCESS_0); /* get next free TFI */ tfi = the_bts->tfi_find_free(GPRS_RLCMAC_UL_TBF, &trx_no, -1); -- 2.5.0

1 0

[PATCH] Change interface in osmo-bts for 11 bit RACH
by Bhargava Abhyankar 01 Apr '16

01 Apr '16

Interface structure between osmo-bts and osmo-pcu is updated with the parameters to differentiate the type of RACH and further support 11 bit RACH. The function prototype and definitions are changed accordingly. Interface version number is increaded. --- include/osmo-bts/pcu_if.h | 3 ++- include/osmo-bts/pcuif_proto.h | 6 ++++-- src/common/l1sap.c | 3 ++- src/common/pcu_sock.c | 5 ++++- src/osmo-bts-sysmo/l1_if.c | 6 ++++++ 5 files changed, 18 insertions(+), 5 deletions(-) diff --git a/include/osmo-bts/pcu_if.h b/include/osmo-bts/pcu_if.h index 0c4fb69..0c0f0b2 100644 --- a/include/osmo-bts/pcu_if.h +++ b/include/osmo-bts/pcu_if.h @@ -11,7 +11,8 @@ int pcu_tx_rts_req(struct gsm_bts_trx_ts *ts, uint8_t is_ptcch, uint32_t fn, int pcu_tx_data_ind(struct gsm_bts_trx_ts *ts, uint8_t is_ptcch, uint32_t fn, uint16_t arfcn, uint8_t block_nr, uint8_t *data, uint8_t len, int8_t rssi); -int pcu_tx_rach_ind(struct gsm_bts *bts, int16_t qta, uint8_t ra, uint32_t fn); +int pcu_tx_rach_ind(struct gsm_bts *bts, int16_t qta, uint16_t ra, uint32_t fn, + uint8_t is_11bit, enum ph_burst_type burst); int pcu_tx_time_ind(uint32_t fn); int pcu_tx_pag_req(const uint8_t *identity_lv, uint8_t chan_needed); int pcu_tx_pch_data_cnf(uint32_t fn, uint8_t *data, uint8_t len); diff --git a/include/osmo-bts/pcuif_proto.h b/include/osmo-bts/pcuif_proto.h index 9d740ac..b965d7c 100644 --- a/include/osmo-bts/pcuif_proto.h +++ b/include/osmo-bts/pcuif_proto.h @@ -1,7 +1,7 @@ #ifndef _PCUIF_PROTO_H #define _PCUIF_PROTO_H -#define PCU_IF_VERSION 0x05 +#define PCU_IF_VERSION 0x06 /* msg_type */ #define PCU_IF_MSG_DATA_REQ 0x00 /* send data to given channel */ @@ -64,10 +64,12 @@ struct gsm_pcu_if_rts_req { struct gsm_pcu_if_rach_ind { uint8_t sapi; - uint8_t ra; + uint16_t ra; int16_t qta; uint32_t fn; uint16_t arfcn; + uint8_t is_11bit; + enum ph_burst_type burst; } __attribute__ ((packed)); struct gsm_pcu_if_info_trx { diff --git a/src/common/l1sap.c b/src/common/l1sap.c index ac398d3..2b2e8f4 100644 --- a/src/common/l1sap.c +++ b/src/common/l1sap.c @@ -903,7 +903,8 @@ static int l1sap_ph_rach_ind(struct gsm_bts_trx *trx, if (trx == bts->c0 && L1SAP_IS_PACKET_RACH(rach_ind->ra)) { LOGP(DL1P, LOGL_INFO, "RACH for packet access\n"); pcu_tx_rach_ind(bts, rach_ind->acc_delay << 2, - rach_ind->ra, rach_ind->fn); + rach_ind->ra, rach_ind->fn, + rach_ind->is_11bit, rach_ind->burst); return 0; } diff --git a/src/common/pcu_sock.c b/src/common/pcu_sock.c index 7c835fb..d7825f0 100644 --- a/src/common/pcu_sock.c +++ b/src/common/pcu_sock.c @@ -343,7 +343,8 @@ int pcu_tx_data_ind(struct gsm_bts_trx_ts *ts, uint8_t is_ptcch, uint32_t fn, return pcu_sock_send(&bts_gsmnet, msg); } -int pcu_tx_rach_ind(struct gsm_bts *bts, int16_t qta, uint8_t ra, uint32_t fn) +int pcu_tx_rach_ind(struct gsm_bts *bts, int16_t qta, uint16_t ra, uint32_t fn, + uint8_t is_11bit, enum ph_burst_type burst) { struct msgb *msg; struct gsm_pcu_if *pcu_prim; @@ -362,6 +363,8 @@ int pcu_tx_rach_ind(struct gsm_bts *bts, int16_t qta, uint8_t ra, uint32_t fn) rach_ind->ra = ra; rach_ind->qta = qta; rach_ind->fn = fn; + rach_ind->is_11bit = is_11bit; + rach_ind->burst = burst; return pcu_sock_send(&bts_gsmnet, msg); } diff --git a/src/osmo-bts-sysmo/l1_if.c b/src/osmo-bts-sysmo/l1_if.c index debc80a..a8f957c 100644 --- a/src/osmo-bts-sysmo/l1_if.c +++ b/src/osmo-bts-sysmo/l1_if.c @@ -898,6 +898,12 @@ static int handle_ph_ra_ind(struct femtol1_hdl *fl1, GsmL1_PhRaInd_t *ra_ind, l1sap->u.rach_ind.ra = ra; l1sap->u.rach_ind.acc_delay = acc_delay; l1sap->u.rach_ind.fn = fn; + + /* Initialising the parameters needs to be handled when 11 bit RACH + * is supported */ + l1sap->u.rach_ind.is_11bit = 0; + l1sap->u.rach_ind.burst = GSM_L1_BURST_TYPE_ACCESS_0; + if (!lchan || lchan->ts->pchan == GSM_PCHAN_CCCH || lchan->ts->pchan == GSM_PCHAN_CCCH_SDCCH4) l1sap->u.rach_ind.chan_nr = 0x88; -- 2.5.0

1 0

[PATCH] Update structure in libosmocore for 11 bit RACH
by Bhargava Abhyankar 01 Apr '16

01 Apr '16

Parameters are added to the structure ph_rach_ind_param to differentiate the type of RACH received from Layer 1. This is to further support the 11 bit RACH. --- include/osmocom/gsm/l1sap.h | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/include/osmocom/gsm/l1sap.h b/include/osmocom/gsm/l1sap.h index 1af8ba8..d7bd172 100644 --- a/include/osmocom/gsm/l1sap.h +++ b/include/osmocom/gsm/l1sap.h @@ -44,12 +44,21 @@ struct ph_rach_req_param { uint16_t offset; /*!< \brief Timing Offset */ }; +/*! \brief for PH_RA_IND burstType inforamtion */ +enum ph_burst_type { + GSM_L1_BURST_TYPE_ACCESS_0 = 4, + GSM_L1_BURST_TYPE_ACCESS_1, + GSM_L1_BURST_TYPE_ACCESS_2 +}; + /*! \brief for PH-RANDOM_ACCESS.ind */ struct ph_rach_ind_param { uint8_t chan_nr; /*!< \brief Channel Number (Like RSL) */ - uint8_t ra; /*!< \brief Random Access */ + uint16_t ra; /*!< \brief Random Access */ uint8_t acc_delay; /*!< \brief Delay in bit periods */ uint32_t fn; /*!< \brief GSM Frame Number at time of RA */ + uint8_t is_11bit; /*!< \brief no.of bits in RACH*/ + enum ph_burst_type burst; /*!< \brief type of burst*/ }; /*! \brief for PH-[UNIT]DATA.{req,ind} | PH-RTS.ind */ -- 2.5.0

1 0

ANN: https://patchwork.osmocom.org
by Holger Freyther 31 Mar '16

31 Mar '16

Hi, we are now running our own copy of patchwork at https://patchwork.osmocom.org. In addition to single patches this version can track series and has a REST API and git-pw client support. The system is currently subscribed to the GPRS, OpenBSC and OsmocomBB mailinglist. The installation is running offlineimap every couple of minutes to fetch new mail, this means it can take some minutes for your comment or patch to be visible. kind regards holger

1 0

[PATCH 1/2] Add EGPRS header type 2 parsing function in uplink
by Bhargava Abhyankar 31 Mar '16

31 Mar '16

Function is added to parse the EGPRS header type 2 in uplink tbf path. This is added to further support mcs 5 to mcs 9 in uplink. --- src/decoding.cpp | 54 +++++++++++++++-- src/decoding.h | 5 +- tests/edge/EdgeTest.cpp | 151 +++++++++++++++++++++++++++++++++++++++++++++++- 3 files changed, 203 insertions(+), 7 deletions(-) diff --git a/src/decoding.cpp b/src/decoding.cpp index f2b548c..ad5b05f 100644 --- a/src/decoding.cpp +++ b/src/decoding.cpp @@ -411,11 +411,11 @@ int Decoding::rlc_parse_ul_data_header(struct gprs_rlc_data_info *rlc, /* skip data area */ cur_bit += cs.maxDataBlockBytes() * 8; break; - - case GprsCodingScheme::HEADER_EGPRS_DATA_TYPE_1: - case GprsCodingScheme::HEADER_EGPRS_DATA_TYPE_2: - /* TODO: Support both header types */ - /* fall through */ + case GprsCodingScheme::HEADER_EGPRS_DATA_TYPE_2 : + cur_bit = rlc_parse_ul_data_header_egprs_type_2(rlc, + data, cs); + break; + case GprsCodingScheme::HEADER_EGPRS_DATA_TYPE_1 : default: LOGP(DRLCMACDL, LOGL_ERROR, "Decoding of uplink %s data blocks not yet supported.\n", @@ -426,6 +426,50 @@ int Decoding::rlc_parse_ul_data_header(struct gprs_rlc_data_info *rlc, return cur_bit; } +int Decoding::rlc_parse_ul_data_header_egprs_type_2( + struct gprs_rlc_data_info *rlc, + const uint8_t *data, + GprsCodingScheme cs) +{ + const struct gprs_rlc_ul_header_egprs_2 *egprs2; + unsigned int e_ti_header, offs, cur_bit = 0; + int punct, punct2, with_padding, cps; + + egprs2 = static_cast < struct gprs_rlc_ul_header_egprs_2 * > + ((void *)data); + + cps = (egprs2->cps_a << 0) | (egprs2->cps_b << 2); + gprs_rlc_mcs_cps_decode(cps, cs, &punct, &punct2, &with_padding); + gprs_rlc_data_info_init_ul(rlc, cs, with_padding); + + rlc->r = egprs2->r; + rlc->si = egprs2->si; + rlc->tfi = (egprs2->tfi_a << 0) | (egprs2->tfi_b << 2); + rlc->cps = cps; + rlc->rsb = egprs2->rsb; + + rlc->num_data_blocks = 1; + rlc->block_info[0].cv = egprs2->cv; + rlc->block_info[0].pi = egprs2->pi; + rlc->block_info[0].bsn = + (egprs2->bsn1_a << 0) | (egprs2->bsn1_b << 5); + + cur_bit += rlc->data_offs_bits[0] - 2; + + offs = rlc->data_offs_bits[0] / 8; + OSMO_ASSERT(rlc->data_offs_bits[0] % 8 == 1); + + e_ti_header = (data[offs-1] + (data[offs] << 8)) >> 7; + rlc->block_info[0].e = !!(e_ti_header & 0x01); + rlc->block_info[0].ti = !!(e_ti_header & 0x02); + cur_bit += 2; + + /* skip data area */ + cur_bit += cs.maxDataBlockBytes() * 8; + + return cur_bit; +} + /** * \brief Copy LSB bitstream RLC data block to byte aligned buffer. * diff --git a/src/decoding.h b/src/decoding.h index 58ecd18..2cb053d 100644 --- a/src/decoding.h +++ b/src/decoding.h @@ -43,7 +43,10 @@ public: static void extract_rbb(const uint8_t *rbb, char *extracted_rbb); static void extract_rbb(const struct bitvec *rbb, char *show_rbb); - + static int rlc_parse_ul_data_header_egprs_type_2( + struct gprs_rlc_data_info *rlc, + const uint8_t *data, + GprsCodingScheme cs); static int rlc_parse_ul_data_header(struct gprs_rlc_data_info *rlc, const uint8_t *data, GprsCodingScheme cs); static unsigned int rlc_copy_to_aligned_buffer( diff --git a/tests/edge/EdgeTest.cpp b/tests/edge/EdgeTest.cpp index 96ea0c1..c2dfc0b 100644 --- a/tests/edge/EdgeTest.cpp +++ b/tests/edge/EdgeTest.cpp @@ -26,7 +26,7 @@ #include "encoding.h" #include "rlc.h" #include "llc.h" - +#include "bts.h" extern "C" { #include "pcu_vty.h" @@ -495,6 +495,155 @@ static void test_rlc_unit_decoder() OSMO_ASSERT(chunks[2].length == 1); OSMO_ASSERT(!chunks[2].is_complete); + cs = GprsCodingScheme::MCS5; + rdbi.data_len = cs.maxDataBlockBytes(); + rdbi.e = 0; + rdbi.ti = 0; + rdbi.cv = 15; + tlli = 0; + offs = 0; + data[offs++] = (15 << 1) | (1 << 0); + num_chunks = Decoding::rlc_data_from_ul_data(&rdbi, cs, data, + chunks, ARRAY_SIZE(chunks), &tlli); + OSMO_ASSERT(num_chunks == 2); + OSMO_ASSERT(tlli == 0); + OSMO_ASSERT(chunks[0].offset == 1); + OSMO_ASSERT(chunks[0].length == 15); + OSMO_ASSERT(chunks[0].is_complete); + OSMO_ASSERT(chunks[1].offset == 16); + OSMO_ASSERT(chunks[1].length == 40); + OSMO_ASSERT(!chunks[1].is_complete); + + rdbi.e = 0; + rdbi.ti = 0; + rdbi.cv = 15; + tlli = 1; + offs = 0; + data[offs++] = (0 << 1) | (0 << 0); + data[offs++] = (7 << 1) | (0 << 0); + data[offs++] = (18 << 1) | (1 << 0); + num_chunks = Decoding::rlc_data_from_ul_data(&rdbi, cs, data, + chunks, ARRAY_SIZE(chunks), &tlli); + OSMO_ASSERT(num_chunks == 4); + OSMO_ASSERT(tlli == 0); + OSMO_ASSERT(chunks[0].length == 0); + OSMO_ASSERT(chunks[0].is_complete); + OSMO_ASSERT(chunks[1].offset == 3); + OSMO_ASSERT(chunks[1].length == 7); + OSMO_ASSERT(chunks[1].is_complete); + OSMO_ASSERT(chunks[2].offset == 10); + OSMO_ASSERT(chunks[2].length == 18); + OSMO_ASSERT(chunks[2].is_complete); + + rdbi.e = 0; + rdbi.ti = 0; + rdbi.cv = 0; + tlli = 0; + offs = 0; + data[offs++] = (6 << 1) | (0 << 0); + data[offs++] = (12 << 1) | (0 << 0); + data[offs++] = (127 << 1) | (1 << 0); + num_chunks = Decoding::rlc_data_from_ul_data(&rdbi, cs, data, + chunks, ARRAY_SIZE(chunks), &tlli); + OSMO_ASSERT(num_chunks == 2); + OSMO_ASSERT(tlli == 0); + OSMO_ASSERT(chunks[0].offset == 3); + OSMO_ASSERT(chunks[0].length == 6); + OSMO_ASSERT(chunks[0].is_complete); + OSMO_ASSERT(chunks[1].offset == 9); + OSMO_ASSERT(chunks[1].length == 12); + OSMO_ASSERT(chunks[1].is_complete); + + cs = GprsCodingScheme::MCS5; + rdbi.data_len = cs.maxDataBlockBytes(); + rdbi.e = 1; + rdbi.ti = 0; + rdbi.cv = 0; + tlli = 0; + offs = 0; + num_chunks = Decoding::rlc_data_from_ul_data(&rdbi, cs, data, + chunks, ARRAY_SIZE(chunks), &tlli); + OSMO_ASSERT(num_chunks == 1); + OSMO_ASSERT(tlli == 0); + OSMO_ASSERT(chunks[0].offset == 0); + OSMO_ASSERT(chunks[0].length == 56); + OSMO_ASSERT(chunks[0].is_complete); + + cs = GprsCodingScheme::MCS6; + rdbi.data_len = cs.maxDataBlockBytes(); + rdbi.e = 0; + rdbi.ti = 0; + rdbi.cv = 15; + tlli = 0; + offs = 0; + data[offs++] = (15 << 1) | (1 << 0); + num_chunks = Decoding::rlc_data_from_ul_data(&rdbi, cs, data, + chunks, ARRAY_SIZE(chunks), &tlli); + OSMO_ASSERT(num_chunks == 2); + OSMO_ASSERT(tlli == 0); + OSMO_ASSERT(chunks[0].offset == 1); + OSMO_ASSERT(chunks[0].length == 15); + OSMO_ASSERT(chunks[0].is_complete); + OSMO_ASSERT(chunks[1].offset == 16); + OSMO_ASSERT(chunks[1].length == 58); + OSMO_ASSERT(!chunks[1].is_complete); + + rdbi.e = 0; + rdbi.ti = 0; + rdbi.cv = 15; + tlli = 1; + offs = 0; + data[offs++] = (0 << 1) | (0 << 0); + data[offs++] = (7 << 1) | (0 << 0); + data[offs++] = (18 << 1) | (1 << 0); + num_chunks = Decoding::rlc_data_from_ul_data(&rdbi, cs, data, + chunks, ARRAY_SIZE(chunks), &tlli); + + OSMO_ASSERT(num_chunks == 4); + OSMO_ASSERT(tlli == 0); + OSMO_ASSERT(chunks[0].length == 0); + OSMO_ASSERT(chunks[0].is_complete); + OSMO_ASSERT(chunks[1].offset == 3); + OSMO_ASSERT(chunks[1].length == 7); + OSMO_ASSERT(chunks[1].is_complete); + OSMO_ASSERT(chunks[2].offset == 10); + OSMO_ASSERT(chunks[2].length == 18); + OSMO_ASSERT(chunks[2].is_complete); + + rdbi.e = 0; + rdbi.ti = 0; + rdbi.cv = 0; + tlli = 0; + offs = 0; + data[offs++] = (6 << 1) | (0 << 0); + data[offs++] = (12 << 1) | (0 << 0); + data[offs++] = (127 << 1) | (1 << 0); + num_chunks = Decoding::rlc_data_from_ul_data(&rdbi, cs, data, + chunks, ARRAY_SIZE(chunks), &tlli); + OSMO_ASSERT(num_chunks == 2); + OSMO_ASSERT(tlli == 0); + OSMO_ASSERT(chunks[0].offset == 3); + OSMO_ASSERT(chunks[0].length == 6); + OSMO_ASSERT(chunks[0].is_complete); + OSMO_ASSERT(chunks[1].offset == 9); + OSMO_ASSERT(chunks[1].length == 12); + OSMO_ASSERT(chunks[1].is_complete); + + cs = GprsCodingScheme::MCS6; + rdbi.data_len = cs.maxDataBlockBytes(); + rdbi.e = 1; + rdbi.ti = 0; + rdbi.cv = 0; + tlli = 0; + offs = 0; + num_chunks = Decoding::rlc_data_from_ul_data(&rdbi, cs, data, + chunks, ARRAY_SIZE(chunks), &tlli); + OSMO_ASSERT(num_chunks == 1); + OSMO_ASSERT(tlli == 0); + OSMO_ASSERT(chunks[0].offset == 0); + OSMO_ASSERT(chunks[0].length == 74); + OSMO_ASSERT(chunks[0].is_complete); + printf("=== end %s ===\n", __func__); } -- 2.5.0

2 3

[PATCH 1/3] Add structure definition for compression algorithm
by sangamesh sajjan 31 Mar '16

31 Mar '16

Defines new structure for Tree node and Declaration of zero's run length code list and one's run length code list --- src/Makefile.am | 6 +- src/egprs_rlc_compression.cpp | 169 +++++++++++++++++++++++++++++++++++++++++ src/egprs_rlc_compression.h | 25 ++++++ 3 files changed, 198 insertions(+), 2 deletions(-) create mode 100644 src/egprs_rlc_compression.cpp create mode 100644 src/egprs_rlc_compression.h diff --git a/src/Makefile.am b/src/Makefile.am index 6428bef..981d5b1 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -57,7 +57,8 @@ libgprs_la_SOURCES = \ rlc.cpp \ osmobts_sock.cpp \ gprs_codel.c \ - gprs_coding_scheme.cpp + gprs_coding_scheme.cpp \ + egprs_rlc_compression.cpp bin_PROGRAMS = \ osmo-pcu @@ -96,7 +97,8 @@ noinst_HEADERS = \ pcu_utils.h \ cxx_linuxlist.h \ gprs_codel.h \ - gprs_coding_scheme.h + gprs_coding_scheme.h \ + egprs_rlc_compression.h osmo_pcu_SOURCES = pcu_main.cpp diff --git a/src/egprs_rlc_compression.cpp b/src/egprs_rlc_compression.cpp new file mode 100644 index 0000000..55ff595 --- /dev/null +++ b/src/egprs_rlc_compression.cpp @@ -0,0 +1,169 @@ +/* egprs_rlc_compression.h +* Routines for EGPRS RLC bitmap compression handling +*/ +#include <egprs_rlc_compression.h> +#include <errno.h> + +const char *one_run_len_code_list[MAX_CDWDTBL_LEN] = { + "00110101", + "000111", + "0111", + "1000", + "1011", + "1100", + "1110", + "1111", + "10011", + "10100", + "00111", + "01000", + "001000", + "000011", + "110100", + "110101", + "101010", + "101011", + "0100111", + "0001100", + "0001000", + "0010111", + "0000011", + "0000100", + "0101000", + "0101011", + "0010011", + "0100100", + "0011000", + "00000010", + "00000011", + "00011010", + "00011011", + "00010010", + "00010011", + "00010100", + "00010101", + "00010110", + "00010111", + "00101000", + "00101001", + "00101010", + "00101011", + "00101100", + "00101101", + "00000100", + "00000101", + "00001010", + "00001011", + "01010010", + "01010011", + "01010100", + "01010101", + "00100100", + "00100101", + "01011000", + "01011001", + "01011010", + "01011011", + "01001010", + "01001011", + "00110010", + "00110011", + "00110100", + "11011", + "10010", + "010111", + "0110111", + "00110110", + "00110111", + "01100100", + "01100101", + "01101000", + "01100111", + "011001100", + "011001101", + "011010010", + "011010011", + "011010100" +}; + +const char *zero_run_len_code_list[MAX_CDWDTBL_LEN] = { + "0000110111", + "10", + "11", + "010", + "011", + "0011", + "0010", + "00011", + "000101", + "000100", + "0000100", + "0000101", + "0000111", + "00000100", + "00000111", + "000011000", + "0000010111", + "0000011000", + "0000001000", + "00001100111", + "00001101000", + "00001101100", + "00000110111", + "00000101000", + "00000010111", + "00000011000", + "000011001010", + "000011001011", + "000011001100", + "000011001101", + "000001101000", + "000001101001", + "000001101010", + "000001101011", + "000011010010", + "000011010011", + "000011010100", + "000011010101", + "000011010110", + "000011010111", + "000001101100", + "000001101101", + "000011011010", + "000011011011", + "000001010100", + "000001010101", + "000001010110", + "000001010111", + "000001100100", + "000001100101", + "000001010010", + "000001010011", + "000000100100", + "000000110111", + "000000111000", + "000000100111", + "000000101000", + "000001011000", + "000001011001", + "000000101011", + "000000101100", + "000001011010", + "000001100110", + "000001100111", + "0000001111", + "000011001000", + "000011001001", + "000001011011", + "000000110011", + "000000110100", + "000000110101", + "0000001101100", + "0000001101101", + "0000001001010", + "0000001001011", + "0000001001100", + "0000001001101", + "0000001110010", + "0000001110011" +}; diff --git a/src/egprs_rlc_compression.h b/src/egprs_rlc_compression.h new file mode 100644 index 0000000..00d850e --- /dev/null +++ b/src/egprs_rlc_compression.h @@ -0,0 +1,25 @@ +/* egprs_rlc_compression.h + * Routines for EGPRS RLC bitmap compression handling + */ +#include <gprs_rlcmac.h> +#include <gprs_debug.h> + +extern "C" { +#include <osmocom/core/talloc.h> +#include <osmocom/core/msgb.h> +#include <osmocom/core/stats.h> +} + +#include <arpa/inet.h> +#include <errno.h> +#include <string.h> + +#define MAX_CDWDTBL_LEN 79 /* total number of codewords */ +#define BITS_TO_BYTES(X) (X ? (X/8):0)+1 +#define MOD8(X) (((X)+8) & (0x07)) + +typedef struct node { + struct node *left; + struct node *right; + uint16_t *run_length; +} Node; -- 1.7.9.5

5 9

[PATCH 1/2] Add EGPRS header type 2 parsing function in uplink
by Bhargava Abhyankar 31 Mar '16

31 Mar '16

Function is added to parse the EGPRS header type 2 in uplink tbf path. This is added to further support mcs 5 to mcs 9 in uplink. --- src/decoding.cpp | 52 +++++++++++++++-- src/decoding.h | 4 ++ tests/edge/EdgeTest.cpp | 151 +++++++++++++++++++++++++++++++++++++++++++++++- 3 files changed, 202 insertions(+), 5 deletions(-) diff --git a/src/decoding.cpp b/src/decoding.cpp index 0c81b2a..4d61083 100644 --- a/src/decoding.cpp +++ b/src/decoding.cpp @@ -352,10 +352,10 @@ int Decoding::rlc_parse_ul_data_header(struct gprs_rlc_data_info *rlc, case GprsCodingScheme::HEADER_EGPRS_DATA_TYPE_3 : cur_bit = rlc_parse_ul_data_header_egprs_type_3(rlc, data, cs); break; - case GprsCodingScheme::HEADER_EGPRS_DATA_TYPE_1: - case GprsCodingScheme::HEADER_EGPRS_DATA_TYPE_2: - /* TODO: Support both header types */ - /* fall through */ + case GprsCodingScheme::HEADER_EGPRS_DATA_TYPE_2 : + cur_bit = rlc_parse_ul_data_header_egprs_type_2(rlc, data, cs); + break; + case GprsCodingScheme::HEADER_EGPRS_DATA_TYPE_1 : default: LOGP(DRLCMACDL, LOGL_ERROR, "Decoding of uplink %s data blocks not yet supported.\n", @@ -438,6 +438,50 @@ int Decoding::rlc_parse_ul_data_header_gprs(struct gprs_rlc_data_info *rlc, return cur_bit; } +int Decoding::rlc_parse_ul_data_header_egprs_type_2( + struct gprs_rlc_data_info *rlc, + const uint8_t *data, + const GprsCodingScheme &cs) +{ + const struct gprs_rlc_ul_header_egprs_2 *egprs2; + unsigned int e_ti_header, offs, cur_bit = 0; + int punct, punct2, with_padding, cps; + + egprs2 = static_cast < struct gprs_rlc_ul_header_egprs_2 * > + ((void *)data); + + cps = (egprs2->cps_a << 0) | (egprs2->cps_b << 2); + gprs_rlc_mcs_cps_decode(cps, cs, &punct, &punct2, &with_padding); + gprs_rlc_data_info_init_ul(rlc, cs, with_padding); + + rlc->r = egprs2->r; + rlc->si = egprs2->si; + rlc->tfi = (egprs2->tfi_a << 0) | (egprs2->tfi_b << 2); + rlc->cps = cps; + rlc->rsb = egprs2->rsb; + + rlc->num_data_blocks = 1; + rlc->block_info[0].cv = egprs2->cv; + rlc->block_info[0].pi = egprs2->pi; + rlc->block_info[0].bsn = + (egprs2->bsn1_a << 0) | (egprs2->bsn1_b << 5); + + cur_bit += rlc->data_offs_bits[0] - 2; + + offs = rlc->data_offs_bits[0] / 8; + OSMO_ASSERT(rlc->data_offs_bits[0] % 8 == 1); + + e_ti_header = (data[offs-1] + (data[offs] << 8)) >> 7; + rlc->block_info[0].e = !!(e_ti_header & 0x01); + rlc->block_info[0].ti = !!(e_ti_header & 0x02); + cur_bit += 2; + + /* skip data area */ + cur_bit += cs.maxDataBlockBytes() * 8; + + return cur_bit; +} + /** * \brief Copy LSB bitstream RLC data block to byte aligned buffer. * diff --git a/src/decoding.h b/src/decoding.h index 1043d67..9fb2c85 100644 --- a/src/decoding.h +++ b/src/decoding.h @@ -51,6 +51,10 @@ public: struct gprs_rlc_data_info *rlc, const uint8_t *data, const GprsCodingScheme &cs); + static int rlc_parse_ul_data_header_egprs_type_2( + struct gprs_rlc_data_info *rlc, + const uint8_t *data, + const GprsCodingScheme &cs); static int rlc_parse_ul_data_header(struct gprs_rlc_data_info *rlc, const uint8_t *data, GprsCodingScheme cs); static unsigned int rlc_copy_to_aligned_buffer( diff --git a/tests/edge/EdgeTest.cpp b/tests/edge/EdgeTest.cpp index 96ea0c1..c2dfc0b 100644 --- a/tests/edge/EdgeTest.cpp +++ b/tests/edge/EdgeTest.cpp @@ -26,7 +26,7 @@ #include "encoding.h" #include "rlc.h" #include "llc.h" - +#include "bts.h" extern "C" { #include "pcu_vty.h" @@ -495,6 +495,155 @@ static void test_rlc_unit_decoder() OSMO_ASSERT(chunks[2].length == 1); OSMO_ASSERT(!chunks[2].is_complete); + cs = GprsCodingScheme::MCS5; + rdbi.data_len = cs.maxDataBlockBytes(); + rdbi.e = 0; + rdbi.ti = 0; + rdbi.cv = 15; + tlli = 0; + offs = 0; + data[offs++] = (15 << 1) | (1 << 0); + num_chunks = Decoding::rlc_data_from_ul_data(&rdbi, cs, data, + chunks, ARRAY_SIZE(chunks), &tlli); + OSMO_ASSERT(num_chunks == 2); + OSMO_ASSERT(tlli == 0); + OSMO_ASSERT(chunks[0].offset == 1); + OSMO_ASSERT(chunks[0].length == 15); + OSMO_ASSERT(chunks[0].is_complete); + OSMO_ASSERT(chunks[1].offset == 16); + OSMO_ASSERT(chunks[1].length == 40); + OSMO_ASSERT(!chunks[1].is_complete); + + rdbi.e = 0; + rdbi.ti = 0; + rdbi.cv = 15; + tlli = 1; + offs = 0; + data[offs++] = (0 << 1) | (0 << 0); + data[offs++] = (7 << 1) | (0 << 0); + data[offs++] = (18 << 1) | (1 << 0); + num_chunks = Decoding::rlc_data_from_ul_data(&rdbi, cs, data, + chunks, ARRAY_SIZE(chunks), &tlli); + OSMO_ASSERT(num_chunks == 4); + OSMO_ASSERT(tlli == 0); + OSMO_ASSERT(chunks[0].length == 0); + OSMO_ASSERT(chunks[0].is_complete); + OSMO_ASSERT(chunks[1].offset == 3); + OSMO_ASSERT(chunks[1].length == 7); + OSMO_ASSERT(chunks[1].is_complete); + OSMO_ASSERT(chunks[2].offset == 10); + OSMO_ASSERT(chunks[2].length == 18); + OSMO_ASSERT(chunks[2].is_complete); + + rdbi.e = 0; + rdbi.ti = 0; + rdbi.cv = 0; + tlli = 0; + offs = 0; + data[offs++] = (6 << 1) | (0 << 0); + data[offs++] = (12 << 1) | (0 << 0); + data[offs++] = (127 << 1) | (1 << 0); + num_chunks = Decoding::rlc_data_from_ul_data(&rdbi, cs, data, + chunks, ARRAY_SIZE(chunks), &tlli); + OSMO_ASSERT(num_chunks == 2); + OSMO_ASSERT(tlli == 0); + OSMO_ASSERT(chunks[0].offset == 3); + OSMO_ASSERT(chunks[0].length == 6); + OSMO_ASSERT(chunks[0].is_complete); + OSMO_ASSERT(chunks[1].offset == 9); + OSMO_ASSERT(chunks[1].length == 12); + OSMO_ASSERT(chunks[1].is_complete); + + cs = GprsCodingScheme::MCS5; + rdbi.data_len = cs.maxDataBlockBytes(); + rdbi.e = 1; + rdbi.ti = 0; + rdbi.cv = 0; + tlli = 0; + offs = 0; + num_chunks = Decoding::rlc_data_from_ul_data(&rdbi, cs, data, + chunks, ARRAY_SIZE(chunks), &tlli); + OSMO_ASSERT(num_chunks == 1); + OSMO_ASSERT(tlli == 0); + OSMO_ASSERT(chunks[0].offset == 0); + OSMO_ASSERT(chunks[0].length == 56); + OSMO_ASSERT(chunks[0].is_complete); + + cs = GprsCodingScheme::MCS6; + rdbi.data_len = cs.maxDataBlockBytes(); + rdbi.e = 0; + rdbi.ti = 0; + rdbi.cv = 15; + tlli = 0; + offs = 0; + data[offs++] = (15 << 1) | (1 << 0); + num_chunks = Decoding::rlc_data_from_ul_data(&rdbi, cs, data, + chunks, ARRAY_SIZE(chunks), &tlli); + OSMO_ASSERT(num_chunks == 2); + OSMO_ASSERT(tlli == 0); + OSMO_ASSERT(chunks[0].offset == 1); + OSMO_ASSERT(chunks[0].length == 15); + OSMO_ASSERT(chunks[0].is_complete); + OSMO_ASSERT(chunks[1].offset == 16); + OSMO_ASSERT(chunks[1].length == 58); + OSMO_ASSERT(!chunks[1].is_complete); + + rdbi.e = 0; + rdbi.ti = 0; + rdbi.cv = 15; + tlli = 1; + offs = 0; + data[offs++] = (0 << 1) | (0 << 0); + data[offs++] = (7 << 1) | (0 << 0); + data[offs++] = (18 << 1) | (1 << 0); + num_chunks = Decoding::rlc_data_from_ul_data(&rdbi, cs, data, + chunks, ARRAY_SIZE(chunks), &tlli); + + OSMO_ASSERT(num_chunks == 4); + OSMO_ASSERT(tlli == 0); + OSMO_ASSERT(chunks[0].length == 0); + OSMO_ASSERT(chunks[0].is_complete); + OSMO_ASSERT(chunks[1].offset == 3); + OSMO_ASSERT(chunks[1].length == 7); + OSMO_ASSERT(chunks[1].is_complete); + OSMO_ASSERT(chunks[2].offset == 10); + OSMO_ASSERT(chunks[2].length == 18); + OSMO_ASSERT(chunks[2].is_complete); + + rdbi.e = 0; + rdbi.ti = 0; + rdbi.cv = 0; + tlli = 0; + offs = 0; + data[offs++] = (6 << 1) | (0 << 0); + data[offs++] = (12 << 1) | (0 << 0); + data[offs++] = (127 << 1) | (1 << 0); + num_chunks = Decoding::rlc_data_from_ul_data(&rdbi, cs, data, + chunks, ARRAY_SIZE(chunks), &tlli); + OSMO_ASSERT(num_chunks == 2); + OSMO_ASSERT(tlli == 0); + OSMO_ASSERT(chunks[0].offset == 3); + OSMO_ASSERT(chunks[0].length == 6); + OSMO_ASSERT(chunks[0].is_complete); + OSMO_ASSERT(chunks[1].offset == 9); + OSMO_ASSERT(chunks[1].length == 12); + OSMO_ASSERT(chunks[1].is_complete); + + cs = GprsCodingScheme::MCS6; + rdbi.data_len = cs.maxDataBlockBytes(); + rdbi.e = 1; + rdbi.ti = 0; + rdbi.cv = 0; + tlli = 0; + offs = 0; + num_chunks = Decoding::rlc_data_from_ul_data(&rdbi, cs, data, + chunks, ARRAY_SIZE(chunks), &tlli); + OSMO_ASSERT(num_chunks == 1); + OSMO_ASSERT(tlli == 0); + OSMO_ASSERT(chunks[0].offset == 0); + OSMO_ASSERT(chunks[0].length == 74); + OSMO_ASSERT(chunks[0].is_complete); + printf("=== end %s ===\n", __func__); } -- 2.5.0

1 1

[PATCH 1/2] Refactor the Uplink RLC header parsing function
by Bhargava Abhyankar 30 Mar '16

30 Mar '16

Parsing the uplink data header for GPRS and EGPRS header type 3 is handled in separate functions. This patch will enhance modularity of the code. --- src/decoding.cpp | 140 ++++++++++++++++++++++++++++++------------------------- src/decoding.h | 9 +++- 2 files changed, 84 insertions(+), 65 deletions(-) diff --git a/src/decoding.cpp b/src/decoding.cpp index f2b548c..0c81b2a 100644 --- a/src/decoding.cpp +++ b/src/decoding.cpp @@ -344,74 +344,14 @@ void Decoding::extract_rbb(const struct bitvec *rbb, char *show_rbb) int Decoding::rlc_parse_ul_data_header(struct gprs_rlc_data_info *rlc, const uint8_t *data, GprsCodingScheme cs) { - const struct gprs_rlc_ul_header_egprs_3 *egprs3; - const struct rlc_ul_header *gprs; - unsigned int e_ti_header; unsigned int cur_bit = 0; - int punct, punct2, with_padding, cps; - unsigned int offs; - switch(cs.headerTypeData()) { - case GprsCodingScheme::HEADER_GPRS_DATA: - gprs = static_cast<struct rlc_ul_header *> - ((void *)data); - - gprs_rlc_data_info_init_ul(rlc, cs, false); - - rlc->r = gprs->r; - rlc->si = gprs->si; - rlc->tfi = gprs->tfi; - rlc->cps = 0; - rlc->rsb = 0; - - rlc->num_data_blocks = 1; - rlc->block_info[0].cv = gprs->cv; - rlc->block_info[0].pi = gprs->pi; - rlc->block_info[0].bsn = gprs->bsn; - rlc->block_info[0].e = gprs->e; - rlc->block_info[0].ti = gprs->ti; - rlc->block_info[0].spb = 0; - - cur_bit += rlc->data_offs_bits[0]; - - /* skip data area */ - cur_bit += cs.maxDataBlockBytes() * 8; + case GprsCodingScheme::HEADER_GPRS_DATA : + cur_bit = rlc_parse_ul_data_header_gprs(rlc, data, cs); break; - case GprsCodingScheme::HEADER_EGPRS_DATA_TYPE_3: - egprs3 = static_cast<struct gprs_rlc_ul_header_egprs_3 *> - ((void *)data); - - cps = (egprs3->cps_a << 0) | (egprs3->cps_b << 2); - gprs_rlc_mcs_cps_decode(cps, cs, &punct, &punct2, &with_padding); - gprs_rlc_data_info_init_ul(rlc, cs, with_padding); - - rlc->r = egprs3->r; - rlc->si = egprs3->si; - rlc->tfi = (egprs3->tfi_a << 0) | (egprs3->tfi_b << 2); - rlc->cps = cps; - rlc->rsb = egprs3->rsb; - - rlc->num_data_blocks = 1; - rlc->block_info[0].cv = egprs3->cv; - rlc->block_info[0].pi = egprs3->pi; - rlc->block_info[0].spb = egprs3->spb; - rlc->block_info[0].bsn = - (egprs3->bsn1_a << 0) | (egprs3->bsn1_b << 5); - - cur_bit += rlc->data_offs_bits[0] - 2; - - offs = rlc->data_offs_bits[0] / 8; - OSMO_ASSERT(rlc->data_offs_bits[0] % 8 == 1); - - e_ti_header = (data[offs-1] + (data[offs] << 8)) >> 7; - rlc->block_info[0].e = !!(e_ti_header & 0x01); - rlc->block_info[0].ti = !!(e_ti_header & 0x02); - cur_bit += 2; - - /* skip data area */ - cur_bit += cs.maxDataBlockBytes() * 8; + case GprsCodingScheme::HEADER_EGPRS_DATA_TYPE_3 : + cur_bit = rlc_parse_ul_data_header_egprs_type_3(rlc, data, cs); break; - case GprsCodingScheme::HEADER_EGPRS_DATA_TYPE_1: case GprsCodingScheme::HEADER_EGPRS_DATA_TYPE_2: /* TODO: Support both header types */ @@ -426,6 +366,78 @@ int Decoding::rlc_parse_ul_data_header(struct gprs_rlc_data_info *rlc, return cur_bit; } +int Decoding::rlc_parse_ul_data_header_egprs_type_3( + struct gprs_rlc_data_info *rlc, + const uint8_t *data, + const GprsCodingScheme &cs) +{ + int punct, punct2, with_padding, cps; + unsigned int e_ti_header, offs, cur_bit = 0; + const struct gprs_rlc_ul_header_egprs_3 *egprs3; + + egprs3 = static_cast < struct gprs_rlc_ul_header_egprs_3 * > + ((void *)data); + + cps = (egprs3->cps_a << 0) | (egprs3->cps_b << 2); + gprs_rlc_mcs_cps_decode(cps, cs, &punct, &punct2, &with_padding); + gprs_rlc_data_info_init_ul(rlc, cs, with_padding); + + rlc->r = egprs3->r; + rlc->si = egprs3->si; + rlc->tfi = (egprs3->tfi_a << 0) | (egprs3->tfi_b << 2); + rlc->cps = cps; + rlc->rsb = egprs3->rsb; + + rlc->num_data_blocks = 1; + rlc->block_info[0].cv = egprs3->cv; + rlc->block_info[0].pi = egprs3->pi; + rlc->block_info[0].spb = egprs3->spb; + rlc->block_info[0].bsn = + (egprs3->bsn1_a << 0) | (egprs3->bsn1_b << 5); + + cur_bit += rlc->data_offs_bits[0] - 2; + offs = rlc->data_offs_bits[0] / 8; + OSMO_ASSERT(rlc->data_offs_bits[0] % 8 == 1); + e_ti_header = (data[offs-1] + (data[offs] << 8)) >> 7; + rlc->block_info[0].e = !!(e_ti_header & 0x01); + rlc->block_info[0].ti = !!(e_ti_header & 0x02); + cur_bit += 2; + /* skip data area */ + cur_bit += cs.maxDataBlockBytes() * 8; + + return cur_bit; +} + +int Decoding::rlc_parse_ul_data_header_gprs(struct gprs_rlc_data_info *rlc, + const uint8_t *data, const GprsCodingScheme &cs) +{ + const struct rlc_ul_header *gprs; + unsigned int cur_bit = 0; + + gprs = static_cast < struct rlc_ul_header * > + ((void *)data); + + gprs_rlc_data_info_init_ul(rlc, cs, false); + + rlc->r = gprs->r; + rlc->si = gprs->si; + rlc->tfi = gprs->tfi; + rlc->cps = 0; + rlc->rsb = 0; + rlc->num_data_blocks = 1; + rlc->block_info[0].cv = gprs->cv; + rlc->block_info[0].pi = gprs->pi; + rlc->block_info[0].bsn = gprs->bsn; + rlc->block_info[0].e = gprs->e; + rlc->block_info[0].ti = gprs->ti; + rlc->block_info[0].spb = 0; + cur_bit += rlc->data_offs_bits[0]; + /* skip data area */ + cur_bit += cs.maxDataBlockBytes() * 8; + + return cur_bit; +} + /** * \brief Copy LSB bitstream RLC data block to byte aligned buffer. * diff --git a/src/decoding.h b/src/decoding.h index 58ecd18..1043d67 100644 --- a/src/decoding.h +++ b/src/decoding.h @@ -43,7 +43,14 @@ public: static void extract_rbb(const uint8_t *rbb, char *extracted_rbb); static void extract_rbb(const struct bitvec *rbb, char *show_rbb); - + static int rlc_parse_ul_data_header_egprs_type_3( + struct gprs_rlc_data_info *rlc, + const uint8_t *data, + const GprsCodingScheme &cs); + static int rlc_parse_ul_data_header_gprs( + struct gprs_rlc_data_info *rlc, + const uint8_t *data, + const GprsCodingScheme &cs); static int rlc_parse_ul_data_header(struct gprs_rlc_data_info *rlc, const uint8_t *data, GprsCodingScheme cs); static unsigned int rlc_copy_to_aligned_buffer( -- 2.5.0

4 8

[PATCH 1/3] Add data structure for CPS calculation in DL
by Aravind Sirsikar 30 Mar '16

30 Mar '16

Define new data structure with respect to TS 44.060 10.4.8a.3.1, 10.4.8a.2.1, 10.4.8a.1.1 for puncturing scheme values and initialize the variable introduced --- src/rlc.cpp | 3 +++ src/rlc.h | 24 ++++++++++++++++++++++++ 2 files changed, 27 insertions(+) diff --git a/src/rlc.cpp b/src/rlc.cpp index 79d8f48..0e16ee8 100644 --- a/src/rlc.cpp +++ b/src/rlc.cpp @@ -33,6 +33,9 @@ uint8_t *gprs_rlc_data::prepare(size_t block_data_len) memset(block, 0x0, sizeof(block)); memset(block, 0x2b, block_data_len); + /* Initial value of puncturing scheme */ + next_ps = EGPRS_PS_1; + return block; } diff --git a/src/rlc.h b/src/rlc.h index 3f10f8c..19dccbe 100644 --- a/src/rlc.h +++ b/src/rlc.h @@ -56,6 +56,27 @@ enum gprs_rlc_dl_bsn_state { GPRS_RLC_DL_BSN_MAX, }; +/* + * Valid puncturing scheme values + * TS 44.060 10.4.8a.3.1, 10.4.8a.2.1, 10.4.8a.1.1 + */ +enum egprs_puncturing_values { + EGPRS_PS_1, + EGPRS_PS_2, + EGPRS_PS_3, + EGPRS_PS_INVALID, +}; + +/* + * EGPRS_MAX_PS_NUM_2 is valid for MCS 1,2,5,6. + * And EGPRS_MAX_PS_NUM_3 is valid for MCS 3,4,7,8,9 + * TS 44.060 10.4.8a.3.1, 10.4.8a.2.1, 10.4.8a.1.1 + */ +enum egprs_puncturing_types { + EGPRS_MAX_PS_NUM_2 = 2, + EGPRS_MAX_PS_NUM_3, + EGPRS_MAX_PS_NUM_INVALID, +}; static inline uint16_t mod_sns_half() { @@ -100,6 +121,9 @@ struct gprs_rlc_data { struct gprs_rlc_data_block_info block_info; GprsCodingScheme cs; + + /* puncturing scheme value to be used for next transmission*/ + enum egprs_puncturing_values next_ps; }; void gprs_rlc_data_info_init_dl(struct gprs_rlc_data_info *rlc, -- 1.7.9.5

2 4

Academic project based on OpenGGSN
by Manuel José Muñoz Calero 29 Mar '16

29 Mar '16

Hi guys, Please, let me introduce myself. My name is Manuel Munoz, Computer Scientist, looking for a topic for my project/undergrad thesis at Universidad de Leon, Spain. I am evaluating these days the possibility to do something interesting which could be used as my project and also to put my bit for the OpenGGSN project. Some more about me. I am 36, have been working for +10 years in IT (sysadmin, php developer, plsql developer, datacenters...). I can speak English and Spanish and hold a 3 years bachelor degree. Not long ago I worked for two years for providers of 2G/3G network monitoring systems, so I have some knowledge about those topics. Also quite fluent in C, wireshark, unix scripting... This weekend I have been doing a quick research and refreshing my mind about both security and mobile networks, and also took a look to OpenGGSN code. Long story short, what about me implementing IPSec for GTP-C in OpenGGSN? Do you think it could be useful? Feasible? 3GPP Protect GTP signalling messages by IPSec ( http://www.3gpp.org/ftp/tsg_sa/wg3_security/TSGS3_14_Oslo/Docs/PDF/S3-00042… ) 3GPP Use IPSec to secure GTP messages ( http://www.3gpp.org/ftp/tsg_sa/wg3_security/tsgs3_13_yokohama/docs/PDF/S3-0… ) Maybe some other security-oriented feature you want to be implemented? I would love to hear your thoughts! Thanks for your time, Manuel

4 7

Re: Time to rename projects.osmocom.org to osmocom.org
by Holger Freyther 27 Mar '16

27 Mar '16

> On 27 Mar 2016, at 16:30, Sylvain Munaut <246tnt(a)gmail.com> wrote: > >> this is now in place and the old domains are now using X509 certs of letsencrypt. > > Do you know if redmine supports going to HTTPS only (i.e. redir http > to https). I changed the "protocol" to HTTPS in the admin panel but > that had no effect afaict. I don't know. > I would prefer to be HTTPS only and also have the session cookie have > the "Secure" flag (so they're never sent over plain HTTP) I added: proxy_set_header X-Forwarded-Ssl on; to the nginx config in the hope that redmine makes use of that instead of the X-Forwarded-Proto. If it matters to you deeply we can make a general http -> https redirect. holger

1 1

Time to rename projects.osmocom.org to osmocom.org
by Holger Freyther 27 Mar '16

27 Mar '16

Hi, I think we all liked tnt's proposal to just call it osmocom.org. Are we ready to make the redmine available as osmocom.org (and redirect www.osmocom.org, projects.osmocom.org to it)? As first step of redirects I propose: http://bb.osmocom.org/ -> http://osmocom.org/projects/baseband http://openbsc.osmocom.org/ -> http://osmocom.org/projects/openbsc http://tetra.osmocom.org/ -> http://osmocom.org/projects/tetra http://simtrace.osmocom.org/ -> http://osmocom.org/projects/simtrace http://security.osmocom.org/ -> http://osmocom.org/projects/security http://gmr.osmocom.org/ -> http://osmocom.org/projects/gmr http://sdr.osmocom.org/ -> http://osmocom.org/projects/sdr any objections or corrections to that? kind regards holger

3 3

Queries regarding L1 interface to osmo-bts for 11 bit RACH
by Bhargava Abhyankar 23 Mar '16

23 Mar '16

Hello, We have planned to support 11 bit RACH in osmo-pcu and osmo-bts. In this regard, we have a query related to layer 1 to osmo-bts interface, as described below. 1. For 11 bit RACH, in PH-RA-IND sent from layer 1. * Whether 'u8Size' will be 2 in case of 11 bit RACH ? * What is the alignment of 11 bits inside 'u8Buffer ? 2. How osmo-bts can distinguish between types of 11 bit RACH based on received layer 1 message ? (spec 44.060 section 11.2.5a) * is burst type GsmL1_BurstType_Access_0 equivalent to GPRS_8_BIT_RACH/ GPRS_11_BIT_RACH * is burst type GsmL1_BurstType_Access_1 equivalent to EGPRS_8_PSK_11_BIT_RACH * is burst type GsmL1_BurstType_Access_2 equivalent to EGPRS_NO_8_PSK_11_BIT_RACH Regards Bhargava Abhyankar

3 4

Proposal for new structure definition for compression algorithm
by Sangamesh Sajjan 22 Mar '16

22 Mar '16

Hello, In current master code base 5 different arrays are used for compression as described below, * Two dimensional array is used to store terminating code words for 1's length code and 0's length code. * Two dimensional array is used to keep size of each codeword * Two dimensional array is used to store make up code words * Two dimensional array is used to keep size of each codeword of makeup code words * one array for each code word to return corresponding value for makeup code words We are proposing following modification for above, * Array of strings shall be used for 1's run length code word * Array of strings shall be used for 0's run length code word These two arrays will have code words of both terminating codes and make up codes together. In this approach two trees (i.e ones list and zero list) shall be introduced and entire code word traversing shall be done in respective tree in single traversal. With this approach we can avoid multiple array usage. The above changes will be sent in my next patch Regards, Sangamesh

2 3

[PATCH] Change the interface in osmo-pcu for 11 bit RACH
by Bhargava Abhyankar 22 Mar '16

22 Mar '16

Interface changes in osmo-pcu towards osmo-bts to receive 11 bit RACH. The interface version number is increased by 1. --- src/bts.cpp | 2 +- src/bts.h | 3 ++- src/pcu_l1_if.cpp | 2 +- src/pcuif_proto.h | 5 +++-- 4 files changed, 7 insertions(+), 5 deletions(-) diff --git a/src/bts.cpp b/src/bts.cpp index 715fb51..9c0871d 100644 --- a/src/bts.cpp +++ b/src/bts.cpp @@ -459,7 +459,7 @@ int BTS::rcv_imm_ass_cnf(const uint8_t *data, uint32_t fn) return 0; } -int BTS::rcv_rach(uint8_t ra, uint32_t Fn, int16_t qta) +int BTS::rcv_rach(uint16_t ra, uint32_t Fn, int16_t qta, uint8_t rach_type) { struct gprs_rlcmac_ul_tbf *tbf = NULL; uint8_t trx_no, ts_no = 0; diff --git a/src/bts.h b/src/bts.h index c975304..2a1f930 100644 --- a/src/bts.h +++ b/src/bts.h @@ -275,7 +275,8 @@ public: int tfi_find_free(enum gprs_rlcmac_tbf_direction dir, uint8_t *_trx, int8_t use_trx); int rcv_imm_ass_cnf(const uint8_t *data, uint32_t fn); - int rcv_rach(uint8_t ra, uint32_t Fn, int16_t qta); + int rcv_rach(uint16_t ra, uint32_t Fn, int16_t qta, + uint8_t rach_type = 0); void trigger_dl_ass(gprs_rlcmac_dl_tbf *tbf, gprs_rlcmac_tbf *old_tbf); void snd_dl_ass(gprs_rlcmac_tbf *tbf, uint8_t poll, const char *imsi); diff --git a/src/pcu_l1_if.cpp b/src/pcu_l1_if.cpp index 19dda5c..7d7c914 100644 --- a/src/pcu_l1_if.cpp +++ b/src/pcu_l1_if.cpp @@ -313,7 +313,7 @@ static int pcu_rx_rach_ind(struct gsm_pcu_if_rach_ind *rach_ind) case PCU_IF_SAPI_RACH: rc = BTS::main_bts()->rcv_rach( rach_ind->ra, rach_ind->fn, - rach_ind->qta); + rach_ind->qta, rach_ind->rach_type); break; default: LOGP(DL1IF, LOGL_ERROR, "Received PCU rach request with " diff --git a/src/pcuif_proto.h b/src/pcuif_proto.h index 9d740ac..877f507 100644 --- a/src/pcuif_proto.h +++ b/src/pcuif_proto.h @@ -1,7 +1,7 @@ #ifndef _PCUIF_PROTO_H #define _PCUIF_PROTO_H -#define PCU_IF_VERSION 0x05 +#define PCU_IF_VERSION 0x06 /* msg_type */ #define PCU_IF_MSG_DATA_REQ 0x00 /* send data to given channel */ @@ -64,10 +64,11 @@ struct gsm_pcu_if_rts_req { struct gsm_pcu_if_rach_ind { uint8_t sapi; - uint8_t ra; + uint16_t ra; int16_t qta; uint32_t fn; uint16_t arfcn; + uint8_t rach_type; } __attribute__ ((packed)); struct gsm_pcu_if_info_trx { -- 2.5.0

3 3

[PATCH] Add structure definition for compression algorithm
by sangamesh sajjan 21 Mar '16

21 Mar '16

Defines new structure for Tree node and Declaration of zero's run length code list and one's run length code list --- src/Makefile.am | 6 +- src/egprs_rlc_compression.cpp | 169 +++++++++++++++++++++++++++++++++++++++++ src/egprs_rlc_compression.h | 15 ++++ 3 files changed, 188 insertions(+), 2 deletions(-) create mode 100644 src/egprs_rlc_compression.cpp create mode 100644 src/egprs_rlc_compression.h diff --git a/src/Makefile.am b/src/Makefile.am index 6428bef..981d5b1 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -57,7 +57,8 @@ libgprs_la_SOURCES = \ rlc.cpp \ osmobts_sock.cpp \ gprs_codel.c \ - gprs_coding_scheme.cpp + gprs_coding_scheme.cpp \ + egprs_rlc_compression.cpp bin_PROGRAMS = \ osmo-pcu @@ -96,7 +97,8 @@ noinst_HEADERS = \ pcu_utils.h \ cxx_linuxlist.h \ gprs_codel.h \ - gprs_coding_scheme.h + gprs_coding_scheme.h \ + egprs_rlc_compression.h osmo_pcu_SOURCES = pcu_main.cpp diff --git a/src/egprs_rlc_compression.cpp b/src/egprs_rlc_compression.cpp new file mode 100644 index 0000000..55ff595 --- /dev/null +++ b/src/egprs_rlc_compression.cpp @@ -0,0 +1,169 @@ +/* egprs_rlc_compression.h +* Routines for EGPRS RLC bitmap compression handling +*/ +#include <egprs_rlc_compression.h> +#include <errno.h> + +const char *one_run_len_code_list[MAX_CDWDTBL_LEN] = { + "00110101", + "000111", + "0111", + "1000", + "1011", + "1100", + "1110", + "1111", + "10011", + "10100", + "00111", + "01000", + "001000", + "000011", + "110100", + "110101", + "101010", + "101011", + "0100111", + "0001100", + "0001000", + "0010111", + "0000011", + "0000100", + "0101000", + "0101011", + "0010011", + "0100100", + "0011000", + "00000010", + "00000011", + "00011010", + "00011011", + "00010010", + "00010011", + "00010100", + "00010101", + "00010110", + "00010111", + "00101000", + "00101001", + "00101010", + "00101011", + "00101100", + "00101101", + "00000100", + "00000101", + "00001010", + "00001011", + "01010010", + "01010011", + "01010100", + "01010101", + "00100100", + "00100101", + "01011000", + "01011001", + "01011010", + "01011011", + "01001010", + "01001011", + "00110010", + "00110011", + "00110100", + "11011", + "10010", + "010111", + "0110111", + "00110110", + "00110111", + "01100100", + "01100101", + "01101000", + "01100111", + "011001100", + "011001101", + "011010010", + "011010011", + "011010100" +}; + +const char *zero_run_len_code_list[MAX_CDWDTBL_LEN] = { + "0000110111", + "10", + "11", + "010", + "011", + "0011", + "0010", + "00011", + "000101", + "000100", + "0000100", + "0000101", + "0000111", + "00000100", + "00000111", + "000011000", + "0000010111", + "0000011000", + "0000001000", + "00001100111", + "00001101000", + "00001101100", + "00000110111", + "00000101000", + "00000010111", + "00000011000", + "000011001010", + "000011001011", + "000011001100", + "000011001101", + "000001101000", + "000001101001", + "000001101010", + "000001101011", + "000011010010", + "000011010011", + "000011010100", + "000011010101", + "000011010110", + "000011010111", + "000001101100", + "000001101101", + "000011011010", + "000011011011", + "000001010100", + "000001010101", + "000001010110", + "000001010111", + "000001100100", + "000001100101", + "000001010010", + "000001010011", + "000000100100", + "000000110111", + "000000111000", + "000000100111", + "000000101000", + "000001011000", + "000001011001", + "000000101011", + "000000101100", + "000001011010", + "000001100110", + "000001100111", + "0000001111", + "000011001000", + "000011001001", + "000001011011", + "000000110011", + "000000110100", + "000000110101", + "0000001101100", + "0000001101101", + "0000001001010", + "0000001001011", + "0000001001100", + "0000001001101", + "0000001110010", + "0000001110011" +}; diff --git a/src/egprs_rlc_compression.h b/src/egprs_rlc_compression.h new file mode 100644 index 0000000..32368cb --- /dev/null +++ b/src/egprs_rlc_compression.h @@ -0,0 +1,15 @@ +/* egprs_rlc_compression.h +* Routines for EGPRS RLC bitmap compression handling +*/ +#include "tbf.h" +#include "bts.h" +#include "gprs_debug.h" +#include <errno.h> + +#define MAX_CDWDTBL_LEN 79 /* total number of codewords */ + +struct node { + struct node *left; + struct node *right; + uint16_t *run_length; +}; -- 1.7.9.5

2 1

[PATCH] Uplink PAN header changes for FANR feature
by sangamesh sajjan 21 Mar '16

21 Mar '16

Added structure definition for handling uplink PAN and added new RLC state for Tentative Ack --- src/bts.h | 1 + src/rlc.h | 36 +++++++++++++++++++++++++++++++++++- 2 files changed, 36 insertions(+), 1 deletion(-) diff --git a/src/bts.h b/src/bts.h index ccb8025..756cddf 100644 --- a/src/bts.h +++ b/src/bts.h @@ -48,6 +48,7 @@ struct GprsMs; #define BITS_TO_BYTES(X) (X ? (X/8):0)+1 #define MOD8(X) (((X)+8)&0x07) #define MOD64(X) ((X + 64) & 0x3F) +#define MOD2048(X) ((X + 2048) & 0x7FF) extern const uint8_t* one_run_len_code_list[MAX_CDWDTBL_LEN]; extern const uint8_t* zero_run_len_code_list[MAX_CDWDTBL_LEN]; diff --git a/src/rlc.h b/src/rlc.h index f7c5457..d29527d 100644 --- a/src/rlc.h +++ b/src/rlc.h @@ -52,6 +52,7 @@ enum gprs_rlc_dl_bsn_state { GPRS_RLC_DL_BSN_ACKED, GPRS_RLC_DL_BSN_UNACKED, GPRS_RLC_DL_BSN_RESEND, + GPRS_RLC_DL_BSN_TENTATIVE_ACK, GPRS_RLC_DL_BSN_MAX, }; @@ -85,6 +86,15 @@ struct gprs_rlc_ul_data_block_info { unsigned int spb; }; +struct egprs_ssn_based_pan_info { + unsigned int bow; + unsigned int short_ssn_a; + unsigned int short_ssn_rb; + unsigned int rb_a; + unsigned int rb_b; + unsigned int tfi; +}; + struct gprs_rlc_ul_header_generic{ GprsCodingScheme cs; unsigned int r; @@ -97,6 +107,7 @@ struct gprs_rlc_ul_header_generic{ unsigned int num_data_blocks; unsigned int data_offs_bytes[2]; struct gprs_rlc_ul_data_block_info block_info[2]; + struct egprs_ssn_based_pan_info pan_info; }; struct gprs_rlc_data { uint8_t *prepare(size_t block_data_length); @@ -161,7 +172,8 @@ struct gprs_rlc_v_b { bool is_resend(int bsn) const; bool is_invalid(int bsn) const; gprs_rlc_dl_bsn_state get_state(int bsn) const; - + bool is_tentative_acked(int bsn) const; + void mark_tentative_acked(int bsn); /* Mark a RLC frame for something */ void mark_unacked(int bsn); void mark_nacked(int bsn); @@ -431,6 +443,18 @@ struct gprs_rlc_ul_header_egprs_1 { uint8_t spare2:6, dummy:2; } __attribute__ ((packed)); + +/* TS 44.060 10.3a.5.1 */ +struct egprs_ssn_based_pan_header { + uint8_t bow:1, + short_ssn_a:7; + uint8_t short_ssn_rb:4, + rb_a:4; + uint8_t rb_b:4, + tfi_a:4; + uint8_t tfi_b:1; +} __attribute__ ((packed)); + } inline bool gprs_rlc_v_b::is_state(int bsn, const gprs_rlc_dl_bsn_state type) const @@ -468,6 +492,16 @@ inline bool gprs_rlc_v_b::is_invalid(int bsn) const return is_state(bsn, GPRS_RLC_DL_BSN_INVALID); } +inline bool gprs_rlc_v_b::is_tentative_acked(int bsn) const +{ + return is_state(bsn, GPRS_RLC_DL_BSN_TENTATIVE_ACK); +} + +inline void gprs_rlc_v_b::mark_tentative_acked(int bsn) +{ + return mark(bsn, GPRS_RLC_DL_BSN_TENTATIVE_ACK); +} + inline gprs_rlc_dl_bsn_state gprs_rlc_v_b::get_state(int bsn) const { return m_v_b[bsn & mod_sns_half()]; -- 1.7.9.5

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