OpenBSC June 2016

openbsc@lists.osmocom.org

18 participants
81 discussions

by mosbah abdelkader

> I don't understand. This callback will be called with data you need to write > to the network. In case of MTP Level3 you will need to wrap that around the > msgb you got. I means: is the interaction with mtp3 layer implemented (is sending sccp data by mtp3 implemented by the library?)? Also, what about the reception of data from mtp3 layer. is that implemented in the sccp lib. I am asking these questions because I see the code of mtp3 in the lib but no significant call is present in the sccp part of the lib. Thank you for your help.

4 weeks, 1 day

dynamic traffic channels

by Neels Hofmeyr

On Tue, Jun 28, 2016 at 10:05:28AM +0200, Harald Welte wrote: > [translated from german] > is it certain that we switch a channel to PDCH only when > gprs mode != none? A TS can be GSM_PCHAN_TCH_F_PDCH; those are the only ones for which we send a PDCH ACT message. We send a PDCH ACT message - during init (CHANNEL OML's state changed to enabled -> send PDCH ACT), - and upon channel release ack when pchan == GSM_PCHAN_TCH_F_PDCH. So the question is, when we receive a channel release ack, could that be the PDCH release and we switch PDCH right back on by accident? No, because we only receive a chan rel ack when the *TCH/F* is being released. That is because the PDCH release is initiated "internally" from the PDCH DEACT, and thus this condition in common/rsl.c rsl_tx_rf_rel_ack() catches on, which existed before dyn PDCH: if (lchan->rel_act_kind != LCHAN_REL_ACT_RSL) { LOGP(DRSL, LOGL_NOTICE, "%s not sending REL ACK\n", gsm_lchan_name(lchan)); return 0; } In rsl_rx_rf_chan_rel() the rel_act_kind is set to LCHAN_REL_ACT_RSL, but not in the rsl_rx_dyn_pdch(). This is analogous to the ip.access way -- the ip.access nanobts replies to a PDCH DEACT with a PDCH DEACT ACK and doesn't send a separate channel release ack. Maybe we could set rel_act_kind to some new LCHAN_REL_ACT_IPAC_DYN_PDCH for clarity? (But we shouldn't actually send a release ack, to stay compatible.) Even though it works as-is, we should indeed add another flag check: - We do check the flags that no ACT/DEACT is already pending; - And we do send a PDCH DEACT only if ts->flags & TS_F_PDCH_ACTIVE; - But we would send a PDCH ACT despite ts->flags & TS_F_PDCH_ACTIVE. This should never happen, but it would make sense to ensure that. ~Neels

2 months, 2 weeks

Moving from trac to a single redmine

by Holger Freyther

Hi guys, I think some of us would like to move to redmine and start using public tickets more frequently. So in case we move there are some topics to be discussed and I would like to start with a couple of them right now. Tickets: Redmine has a global linear sequence of ticket numbers. If we move from many tracs to a single redmine we can either: * not import tickets * only import from one project * deal with changing ticket numbers In terms of installations the GMR trac is broken in regard to tickets, there are some for SDR that are probably not being fixed anytime soon, baseband might be relevant and OpenBSC is unlikely to be relevant. I don't think we have ever used ticket reference in OpenBSC commit messages so in terms of OpenBSC having changing ticket numbers would not be a big deal. E.g. we could add a custom field with the old trac number? Wiki: We have external references that should be redirected to the new place. Is there any way besides maintaining a list in the apache2/nginx configuration and making redirects as we find broken references? Can we proactively manage this? Is anybody willing to come up with a script and nginx configuration for doing this? kind regards holger

8 years, 10 months

GPRS on osmo-trx not working

by Neels Hofmeyr

Hi List, Voice is working well, but I can't seem to get GPRS working on osmo-trx. I used the standard debian 8.4 packages for UHD which seem to work, and documented that at http://osmocom.org/projects/osmotrx/wiki/OsmoTRX#Dependencies I also tried to use a PCU from before EDGE support was merged, so that's not causing it. Any ideas on what might be causing this? With sysmobts, for example, I needed to configure the pcu with --enable-sysmocom-dsp. Any such things with osmo-trx? I'm running both pcu and osmo-bts-trx as root with -r 1. Some of the log messages look quite bad, like 20160628170840743 DNS <0010> gprs_ns.c:951 NS RESET ACK Discarding unexpected message for NS-VCI 1800 from SGSN NSEI=1800 I didn't do the rts-advance increase by 5, because when that log message is issued, the PCU is not running yet: 20160628170837632 DL1C <0006> scheduler.c:240 Prim for trx=0 ts=0 at fn=272652 is out of range, or channel already disabled. If this happens in conjunction with PCU, increase 'rts-advance' by 5. (current fn=272658) Below are some logs and attached are the config files. The identical setup is working for other BTS models, the osmo-bts.cfg is the only difference. Thanks for any hints! ~Neels TRX: linux; GNU C++ version 4.9.1; Boost_105500; UHD_003.007.003-0-unknown opening configuration table from path :memory: Config Settings Log Level............... NOTICE Device args............. TRX Base Port........... 5700 TRX Address............. 127.0.0.1 Channels................ 1 Tx Samples-per-Symbol... 4 Rx Samples-per-Symbol... 1 EDGE support............ Disabled External Reference...... Disabled C0 Filler Table......... Disabled Diversity............... Disabled Tuning offset........... 0 RSSI to dBm offset...... 0 Swap channels........... 0 -- Operating over USB 2. -- Initialize CODEC control... -- Initialize Radio control... -- Performing register loopback test... pass -- Performing register loopback test... pass -- Performing CODEC loopback test... pass -- Performing CODEC loopback test... pass -- Asking for clock rate 32.000000 MHz -- Actually got clock rate 32.000000 MHz -- Performing timer loopback test... pass -- Performing timer loopback test... pass -- Asking for clock rate 26.000000 MHz -- Actually got clock rate 26.000000 MHz -- Performing timer loopback test... pass -- Performing timer loopback test... pass -- Setting B210 4 SPS -- Transceiver active with 1 channel(s) NOTICE 140232141276928 17:27:18.0 Transceiver.cpp:241:start: Starting the transceiver NOTICE 140232141244160 17:27:18.5 Transceiver.cpp:380:pushRadioVector: dumping STALE burst in TRX->USRP interface ^ I see ~130 of these notices of a stale burst, but all with an identical timestamp, and only once after osmo-bts-trx starts up. PCU: 20160628170840742 DL1IF <0001> osmobts_sock.cpp:227 Opening OsmoPCU L1 interface to OsmoBTS 20160628170840742 DL1IF <0001> osmobts_sock.cpp:285 osmo-bts PCU socket has been connected 20160628170840742 DL1IF <0001> pcu_l1_if.cpp:359 BTS available 20160628170840742 DNS <0008> gprs_ns.c:233 NSVCI=65534 Creating NS-VC 20160628170840742 DNS <0008> gprs_ns.c:233 NSVCI=1800 Creating NS-VC 20160628170840742 DNS <0008> gprs_ns.c:1568 NSEI=1800 RESET procedure based on API request 20160628170840742 DNS <0008> gprs_ns.c:393 NSEI=1800 Tx NS RESET (NSVCI=1800, cause=O&M intervention) 20160628170840742 DL1IF <0001> pcu_l1_if.cpp:83 Sending activate request: trx=0 ts=5 20160628170840743 DL1IF <0001> pcu_l1_if.cpp:486 PDCH: trx=0 ts=5 20160628170840743 DL1IF <0001> pcu_l1_if.cpp:83 Sending activate request: trx=0 ts=6 20160628170840743 DL1IF <0001> pcu_l1_if.cpp:486 PDCH: trx=0 ts=6 20160628170840743 DL1IF <0001> pcu_l1_if.cpp:83 Sending activate request: trx=0 ts=7 20160628170840743 DL1IF <0001> pcu_l1_if.cpp:486 PDCH: trx=0 ts=7 20160628170843743 DNS <0008> gprs_ns.c:393 NSEI=1800 Tx NS RESET (NSVCI=1800, cause=O&M intervention) 20160628170846743 DNS <0008> gprs_ns.c:393 NSEI=1800 Tx NS RESET (NSVCI=1800, cause=O&M intervention) 20160628170849743 DNS <0008> gprs_ns.c:393 NSEI=1800 Tx NS RESET (NSVCI=1800, cause=O&M intervention) 20160628170852743 DNS <0008> gprs_ns.c:393 NSEI=1800 Tx NS RESET (NSVCI=1800, cause=O&M intervention) 20160628170855743 DNS <0008> gprs_ns.c:393 NSEI=1800 Tx NS RESET (NSVCI=1800, cause=O&M intervention) 20160628170858743 DNS <0008> gprs_ns.c:393 NSEI=1800 Tx NS RESET (NSVCI=1800, cause=O&M intervention) 20160628170901743 DNS <0008> gprs_ns.c:393 NSEI=1800 Tx NS RESET (NSVCI=1800, cause=O&M intervention) 20160628170904744 DNS <0008> gprs_ns.c:393 NSEI=1800 Tx NS RESET (NSVCI=1800, cause=O&M intervention) 20160628170907744 DNS <0008> gprs_ns.c:393 NSEI=1800 Tx NS RESET (NSVCI=1800, cause=O&M intervention) 20160628170910744 DNS <0008> gprs_ns.c:393 NSEI=1800 Tx NS RESET (NSVCI=1800, cause=O&M intervention) 20160628170913744 DNS <0008> gprs_ns.c:393 NSEI=1800 Tx NS RESET (NSVCI=1800, cause=O&M intervention) 20160628170916744 DNS <0008> gprs_ns.c:393 NSEI=1800 Tx NS RESET (NSVCI=1800, cause=O&M intervention) 20160628170919744 DNS <0008> gprs_ns.c:393 NSEI=1800 Tx NS RESET (NSVCI=1800, cause=O&M intervention) 20160628170922744 DNS <0008> gprs_ns.c:393 NSEI=1800 Tx NS RESET (NSVCI=1800, cause=O&M intervention) 20160628170925745 DNS <0008> gprs_ns.c:393 NSEI=1800 Tx NS RESET (NSVCI=1800, cause=O&M intervention) 20160628170928745 DNS <0008> gprs_ns.c:393 NSEI=1800 Tx NS RESET (NSVCI=1800, cause=O&M intervention) 20160628170931745 DNS <0008> gprs_ns.c:393 NSEI=1800 Tx NS RESET (NSVCI=1800, cause=O&M intervention) 20160628170934745 DNS <0008> gprs_ns.c:393 NSEI=1800 Tx NS RESET (NSVCI=1800, cause=O&M intervention) 20160628170937745 DNS <0008> gprs_ns.c:393 NSEI=1800 Tx NS RESET (NSVCI=1800, cause=O&M intervention) 20160628170940745 DNS <0008> gprs_ns.c:393 NSEI=1800 Tx NS RESET (NSVCI=1800, cause=O&M intervention) 20160628170943746 DNS <0008> gprs_ns.c:393 NSEI=1800 Tx NS RESET (NSVCI=1800, cause=O&M intervention) SGSN: <0010> gprs_ns.c:233 NSVCI=65534 Creating NS-VC 20160628170817898 DGPRS <000f> sgsn_main.c:361 VTY at 127.0.0.1 4245 20160628170817898 DGPRS <000f> sgsn_main.c:370 CTRL at 127.0.0.1 4251 20160628170817898 DLGTP <0023> gtp.c:701 GTP: gtp_newgsn() started 20160628170840743 DNS <0010> gprs_ns.c:233 NSVCI=65535 Creating NS-VC 20160628170840743 DNS <0010> gprs_ns.c:1262 Creating NS-VC for BSS at 10.9.1.120:23000 20160628170840743 DNS <0010> gprs_ns.c:834 NSVCI=65535(invalid) Rx NS RESET (NSEI=1800, NSVCI=1800, cause=O&M intervention) 20160628170840743 DNS <0010> gprs_ns.c:654 NSEI=1800 Tx NS RESET ACK (NSVCI=1800) 20160628170840743 DNS <0010> gprs_ns.c:942 NSVCI=1800 Rx NS RESET ACK (NSEI=1800, NSVCI=1800) 20160628170840743 DNS <0010> gprs_ns.c:951 NS RESET ACK Discarding unexpected message for NS-VCI 1800 from SGSN NSEI=1800 20160628170843743 DNS <0010> gprs_ns.c:834 NSVCI=1800 Rx NS RESET (NSEI=1800, NSVCI=1800, cause=O&M intervention) 20160628170843743 DNS <0010> gprs_ns.c:654 NSEI=1800 Tx NS RESET ACK (NSVCI=1800) 20160628170843743 DNS <0010> gprs_ns.c:942 NSVCI=1800 Rx NS RESET ACK (NSEI=1800, NSVCI=1800) 20160628170843743 DNS <0010> gprs_ns.c:951 NS RESET ACK Discarding unexpected message for NS-VCI 1800 from SGSN NSEI=1800 20160628170846743 DNS <0010> gprs_ns.c:834 NSVCI=1800 Rx NS RESET (NSEI=1800, NSVCI=1800, cause=O&M intervention) 20160628170846743 DNS <0010> gprs_ns.c:654 NSEI=1800 Tx NS RESET ACK (NSVCI=1800) 20160628170846743 DNS <0010> gprs_ns.c:942 NSVCI=1800 Rx NS RESET ACK (NSEI=1800, NSVCI=1800) 20160628170846743 DNS <0010> gprs_ns.c:951 NS RESET ACK Discarding unexpected message for NS-VCI 1800 from SGSN NSEI=1800 20160628170847899 DGPRS <000f> gprs_sgsn.c:790 Checking for inactive LLMEs, time = 16442 20160628170849743 DNS <0010> gprs_ns.c:834 NSVCI=1800 Rx NS RESET (NSEI=1800, NSVCI=1800, cause=O&M intervention) 20160628170849743 DNS <0010> gprs_ns.c:654 NSEI=1800 Tx NS RESET ACK (NSVCI=1800) 20160628170849743 DNS <0010> gprs_ns.c:942 NSVCI=1800 Rx NS RESET ACK (NSEI=1800, NSVCI=1800) 20160628170849743 DNS <0010> gprs_ns.c:951 NS RESET ACK Discarding unexpected message for NS-VCI 1800 from SGSN NSEI=1800 20160628170852743 DNS <0010> gprs_ns.c:834 NSVCI=1800 Rx NS RESET (NSEI=1800, NSVCI=1800, cause=O&M intervention) 20160628170852743 DNS <0010> gprs_ns.c:654 NSEI=1800 Tx NS RESET ACK (NSVCI=1800) 20160628170852743 DNS <0010> gprs_ns.c:942 NSVCI=1800 Rx NS RESET ACK (NSEI=1800, NSVCI=1800) 20160628170852743 DNS <0010> gprs_ns.c:951 NS RESET ACK Discarding unexpected message for NS-VCI 1800 from SGSN NSEI=1800 20160628170855743 DNS <0010> gprs_ns.c:834 NSVCI=1800 Rx NS RESET (NSEI=1800, NSVCI=1800, cause=O&M intervention) 20160628170855743 DNS <0010> gprs_ns.c:654 NSEI=1800 Tx NS RESET ACK (NSVCI=1800) 20160628170855743 DNS <0010> gprs_ns.c:942 NSVCI=1800 Rx NS RESET ACK (NSEI=1800, NSVCI=1800) 20160628170855743 DNS <0010> gprs_ns.c:951 NS RESET ACK Discarding unexpected message for NS-VCI 1800 from SGSN NSEI=1800 20160628170858743 DNS <0010> gprs_ns.c:834 NSVCI=1800 Rx NS RESET (NSEI=1800, NSVCI=1800, cause=O&M intervention) 20160628170858743 DNS <0010> gprs_ns.c:654 NSEI=1800 Tx NS RESET ACK (NSVCI=1800) 20160628170858743 DNS <0010> gprs_ns.c:942 NSVCI=1800 Rx NS RESET ACK (NSEI=1800, NSVCI=1800) 20160628170858743 DNS <0010> gprs_ns.c:951 NS RESET ACK Discarding unexpected message for NS-VCI 1800 from SGSN NSEI=1800 20160628170901744 DNS <0010> gprs_ns.c:834 NSVCI=1800 Rx NS RESET (NSEI=1800, NSVCI=1800, cause=O&M intervention) 20160628170901744 DNS <0010> gprs_ns.c:654 NSEI=1800 Tx NS RESET ACK (NSVCI=1800) 20160628170901744 DNS <0010> gprs_ns.c:942 NSVCI=1800 Rx NS RESET ACK (NSEI=1800, NSVCI=1800) 20160628170901744 DNS <0010> gprs_ns.c:951 NS RESET ACK Discarding unexpected message for NS-VCI 1800 from SGSN NSEI=1800 20160628170904744 DNS <0010> gprs_ns.c:834 NSVCI=1800 Rx NS RESET (NSEI=1800, NSVCI=1800, cause=O&M intervention) 20160628170904744 DNS <0010> gprs_ns.c:654 NSEI=1800 Tx NS RESET ACK (NSVCI=1800) 20160628170904744 DNS <0010> gprs_ns.c:942 NSVCI=1800 Rx NS RESET ACK (NSEI=1800, NSVCI=1800) 20160628170904744 DNS <0010> gprs_ns.c:951 NS RESET ACK Discarding unexpected message for NS-VCI 1800 from SGSN NSEI=1800 20160628170907744 DNS <0010> gprs_ns.c:834 NSVCI=1800 Rx NS RESET (NSEI=1800, NSVCI=1800, cause=O&M intervention) 20160628170907744 DNS <0010> gprs_ns.c:654 NSEI=1800 Tx NS RESET ACK (NSVCI=1800) 20160628170907744 DNS <0010> gprs_ns.c:942 NSVCI=1800 Rx NS RESET ACK (NSEI=1800, NSVCI=1800) 20160628170907744 DNS <0010> gprs_ns.c:951 NS RESET ACK Discarding unexpected message for NS-VCI 1800 from SGSN NSEI=1800 20160628170910744 DNS <0010> gprs_ns.c:834 NSVCI=1800 Rx NS RESET (NSEI=1800, NSVCI=1800, cause=O&M intervention) 20160628170910744 DNS <0010> gprs_ns.c:654 NSEI=1800 Tx NS RESET ACK (NSVCI=1800) 20160628170910744 DNS <0010> gprs_ns.c:942 NSVCI=1800 Rx NS RESET ACK (NSEI=1800, NSVCI=1800) 20160628170910744 DNS <0010> gprs_ns.c:951 NS RESET ACK Discarding unexpected message for NS-VCI 1800 from SGSN NSEI=1800 20160628170913744 DNS <0010> gprs_ns.c:834 NSVCI=1800 Rx NS RESET (NSEI=1800, NSVCI=1800, cause=O&M intervention) 20160628170913744 DNS <0010> gprs_ns.c:654 NSEI=1800 Tx NS RESET ACK (NSVCI=1800) 20160628170913744 DNS <0010> gprs_ns.c:942 NSVCI=1800 Rx NS RESET ACK (NSEI=1800, NSVCI=1800) 20160628170913744 DNS <0010> gprs_ns.c:951 NS RESET ACK Discarding unexpected message for NS-VCI 1800 from SGSN NSEI=1800 20160628170916744 DNS <0010> gprs_ns.c:834 NSVCI=1800 Rx NS RESET (NSEI=1800, NSVCI=1800, cause=O&M intervention) 20160628170916744 DNS <0010> gprs_ns.c:654 NSEI=1800 Tx NS RESET ACK (NSVCI=1800) 20160628170916744 DNS <0010> gprs_ns.c:942 NSVCI=1800 Rx NS RESET ACK (NSEI=1800, NSVCI=1800) 20160628170916744 DNS <0010> gprs_ns.c:951 NS RESET ACK Discarding unexpected message for NS-VCI 1800 from SGSN NSEI=1800 20160628170917900 DGPRS <000f> gprs_sgsn.c:790 Checking for inactive LLMEs, time = 16472 20160628170919744 DNS <0010> gprs_ns.c:834 NSVCI=1800 Rx NS RESET (NSEI=1800, NSVCI=1800, cause=O&M intervention) 20160628170919744 DNS <0010> gprs_ns.c:654 NSEI=1800 Tx NS RESET ACK (NSVCI=1800) 20160628170919745 DNS <0010> gprs_ns.c:942 NSVCI=1800 Rx NS RESET ACK (NSEI=1800, NSVCI=1800) 20160628170919745 DNS <0010> gprs_ns.c:951 NS RESET ACK Discarding unexpected message for NS-VCI 1800 from SGSN NSEI=1800 20160628170922745 DNS <0010> gprs_ns.c:834 NSVCI=1800 Rx NS RESET (NSEI=1800, NSVCI=1800, cause=O&M intervention) 20160628170922745 DNS <0010> gprs_ns.c:654 NSEI=1800 Tx NS RESET ACK (NSVCI=1800) 20160628170922745 DNS <0010> gprs_ns.c:942 NSVCI=1800 Rx NS RESET ACK (NSEI=1800, NSVCI=1800) 20160628170922745 DNS <0010> gprs_ns.c:951 NS RESET ACK Discarding unexpected message for NS-VCI 1800 from SGSN NSEI=1800 20160628170925745 DNS <0010> gprs_ns.c:834 NSVCI=1800 Rx NS RESET (NSEI=1800, NSVCI=1800, cause=O&M intervention) 20160628170925745 DNS <0010> gprs_ns.c:654 NSEI=1800 Tx NS RESET ACK (NSVCI=1800) 20160628170925745 DNS <0010> gprs_ns.c:942 NSVCI=1800 Rx NS RESET ACK (NSEI=1800, NSVCI=1800) 20160628170925745 DNS <0010> gprs_ns.c:951 NS RESET ACK Discarding unexpected message for NS-VCI 1800 from SGSN NSEI=1800 20160628170928745 DNS <0010> gprs_ns.c:834 NSVCI=1800 Rx NS RESET (NSEI=1800, NSVCI=1800, cause=O&M intervention) 20160628170928745 DNS <0010> gprs_ns.c:654 NSEI=1800 Tx NS RESET ACK (NSVCI=1800) 20160628170928745 DNS <0010> gprs_ns.c:942 NSVCI=1800 Rx NS RESET ACK (NSEI=1800, NSVCI=1800) 20160628170928745 DNS <0010> gprs_ns.c:951 NS RESET ACK Discarding unexpected message for NS-VCI 1800 from SGSN NSEI=1800 20160628170931745 DNS <0010> gprs_ns.c:834 NSVCI=1800 Rx NS RESET (NSEI=1800, NSVCI=1800, cause=O&M intervention) 20160628170931745 DNS <0010> gprs_ns.c:654 NSEI=1800 Tx NS RESET ACK (NSVCI=1800) 20160628170931745 DNS <0010> gprs_ns.c:942 NSVCI=1800 Rx NS RESET ACK (NSEI=1800, NSVCI=1800) 20160628170931745 DNS <0010> gprs_ns.c:951 NS RESET ACK Discarding unexpected message for NS-VCI 1800 from SGSN NSEI=1800 20160628170934745 DNS <0010> gprs_ns.c:834 NSVCI=1800 Rx NS RESET (NSEI=1800, NSVCI=1800, cause=O&M intervention) 20160628170934745 DNS <0010> gprs_ns.c:654 NSEI=1800 Tx NS RESET ACK (NSVCI=1800) 20160628170934745 DNS <0010> gprs_ns.c:942 NSVCI=1800 Rx NS RESET ACK (NSEI=1800, NSVCI=1800) 20160628170934745 DNS <0010> gprs_ns.c:951 NS RESET ACK Discarding unexpected message for NS-VCI 1800 from SGSN NSEI=1800 20160628170937745 DNS <0010> gprs_ns.c:834 NSVCI=1800 Rx NS RESET (NSEI=1800, NSVCI=1800, cause=O&M intervention) 20160628170937745 DNS <0010> gprs_ns.c:654 NSEI=1800 Tx NS RESET ACK (NSVCI=1800) 20160628170937745 DNS <0010> gprs_ns.c:942 NSVCI=1800 Rx NS RESET ACK (NSEI=1800, NSVCI=1800) 20160628170937745 DNS <0010> gprs_ns.c:951 NS RESET ACK Discarding unexpected message for NS-VCI 1800 from SGSN NSEI=1800 20160628170940746 DNS <0010> gprs_ns.c:834 NSVCI=1800 Rx NS RESET (NSEI=1800, NSVCI=1800, cause=O&M intervention) 20160628170940746 DNS <0010> gprs_ns.c:654 NSEI=1800 Tx NS RESET ACK (NSVCI=1800) 20160628170940746 DNS <0010> gprs_ns.c:942 NSVCI=1800 Rx NS RESET ACK (NSEI=1800, NSVCI=1800) 20160628170940746 DNS <0010> gprs_ns.c:951 NS RESET ACK Discarding unexpected message for NS-VCI 1800 from SGSN NSEI=1800 20160628170943746 DNS <0010> gprs_ns.c:834 NSVCI=1800 Rx NS RESET (NSEI=1800, NSVCI=1800, cause=O&M intervention) 20160628170943746 DNS <0010> gprs_ns.c:654 NSEI=1800 Tx NS RESET ACK (NSVCI=1800) 20160628170943746 DNS <0010> gprs_ns.c:942 NSVCI=1800 Rx NS RESET ACK (NSEI=1800, NSVCI=1800) 20160628170943746 DNS <0010> gprs_ns.c:951 NS RESET ACK Discarding unexpected message for NS-VCI 1800 from SGSN NSEI=1800 20160628170946746 DNS <0010> gprs_ns.c:834 NSVCI=1800 Rx NS RESET (NSEI=1800, NSVCI=1800, cause=O&M intervention) 20160628170946746 DNS <0010> gprs_ns.c:654 NSEI=1800 Tx NS RESET ACK (NSVCI=1800) 20160628170946746 DNS <0010> gprs_ns.c:942 NSVCI=1800 Rx NS RESET ACK (NSEI=1800, NSVCI=1800) 20160628170946746 DNS <0010> gprs_ns.c:951 NS RESET ACK Discarding unexpected message for NS-VCI 1800 from SGSN NSEI=1800 osmo-bts-trx: [...] 20160628170836837 DOML <0001> oml.c:217 OC=CHANNEL INST=(00,00,06) Tx STATE CHG REP 20160628170836877 DOML <0001> oml.c:817 OC=CHANNEL INST=(00,00,07) SET CHAN ATTR (TSC = 7) 20160628170836877 DL1C <0006> scheduler.c:1273 Configuring multiframe with PDCH trx=0 ts=7 20160628170836877 DOML <0001> oml.c:884 ADM state already was Unlocked 20160628170836877 DOML <0001> oml.c:249 OC=CHANNEL INST=(00,00,07) AVAIL STATE Dependency -> OK 20160628170836877 DOML <0001> oml.c:256 OC=CHANNEL INST=(00,00,07) OPER STATE Disabled -> Enabled 20160628170836877 DPCU <0009> pcu_sock.c:627 PCU socket not connected, dropping message 20160628170836877 DOML <0001> oml.c:217 OC=CHANNEL INST=(00,00,07) Tx STATE CHG REP 20160628170836984 DL1C <0006> scheduler_trx.c:1433 GSM clock skew: old fn=272611, new fn=272536 20160628170837632 DL1C <0006> scheduler.c:240 Prim for trx=0 ts=0 at fn=272652 is out of range, or channel already disabled. If this happens in conjunction with PCU, increase 'rts-advance' by 5. (current fn=272658) 20160628170840742 DPCU <0009> pcu_sock.c:824 PCU socket connected to external PCU 20160628170840743 DL1C <0006> scheduler.c:1310 Activating PDTCH on trx=0 ts=5 20160628170840743 DL1C <0006> scheduler.c:1310 Activating PTCCH on trx=0 ts=5 20160628170840743 DRSL <0000> rsl.c:579 (bts=0,trx=0,ts=5,ss=0) not sending CHAN ACT ACK 20160628170840743 DL1C <0006> scheduler.c:1310 Activating PDTCH on trx=0 ts=6 20160628170840743 DL1C <0006> scheduler.c:1310 Activating PTCCH on trx=0 ts=6 20160628170840743 DRSL <0000> rsl.c:579 (bts=0,trx=0,ts=6,ss=0) not sending CHAN ACT ACK 20160628170840743 DL1C <0006> scheduler.c:1310 Activating PDTCH on trx=0 ts=7 20160628170840743 DL1C <0006> scheduler.c:1310 Activating PTCCH on trx=0 ts=7 20160628170840743 DRSL <0000> rsl.c:579 (bts=0,trx=0,ts=7,ss=0) not sending CHAN ACT ACK 20160628170857756 DL1C <0006> scheduler_trx.c:907 Received incomplete PDTCH block ending at fn=276994 (42/104) for PDTCH 20160628170857756 DL1C <0006> scheduler_trx.c:921 Received bad PDTCH block ending at fn=276994 (42/104) for PDTCH 20160628170940774 DL1C <0006> scheduler_trx.c:907 Received incomplete PDTCH block ending at fn=286315 (3/104) for PDTCH 20160628170940775 DL1C <0006> scheduler_trx.c:921 Received bad PDTCH block ending at fn=286315 (3/104) for PDTCH 20160628170945250 DL1C <0006> scheduler_trx.c:907 Received incomplete PDTCH block ending at fn=287285 (37/104) for PDTCH 20160628170945250 DL1C <0006> scheduler_trx.c:921 Received bad PDTCH block ending at fn=287285 (37/104) for PDTCH -- - 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

9 years

OsmoTRX / BER, RSSI and Link Quality

by Harald Welte

Hi Tom and List, we're currently introducing some code that will make more use of measurement related information associated with the PH-RACH.req and PH-DATA.ind coming from the PHY up into L2. The first part is to introduce a reasonable BER limit fo 17% for RACH ghost elimination, but I have more plans for unifying the measurement processing/generation accross all supported BTS models. For osmo-bts-{sysmo,lc15,octphy} it is clear to me how to get the related information on RSSI, BER and LinkQuality for each of the RACH and DATA indications from the PHY. However, how can I get the related information from osmo-bts-trx? osmo-bts-trx seems to lack any BER reporting toward the common part, which among other things is the reason why link/rate adaption in the PCU can not work with it. Could you sched some light on this? -- - 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)

9 years

error install openbsc

by sms makhof

Hi all I am installing OpenBSC.I just following http://openbsc.osmocom.org/trac/wiki/Building_OpenBSC (I am just Building libosmocore, Building libosmo-abis, Building libosmo-netif, Building OpenBSC and install library.) But when I tried to run OpenBSC,I encounter with this error(problem). user12@ubuntu:~$ cd '/home/user12/openbsc/openbsc/src/osmo-nitb' user12@ubuntu:~/openbsc/openbsc/src/osmo-nitb$ sudo ./osmo-nitb <0005> bsc_init.c:492 Failed to parse the config file: 'openbsc.cfg' Or how do I run the software(OpenBSC)! Or do I have to install something missing? Note: My Linux is version ubuntu 12.04 . Please help me. thank you.

9 years, 1 month

Is there a maximum separation in Mhz for ARFCNs on one BTS?

by Keith Whyte

Hi all, Would somebody who is familiar with the relevant part of the GSM spec be able to comment? I'm wondering if there's any issue in GSM running a dual TRX BTS with two ARFCNs on opposite ends of the band? For example, in GSM850, this would mean the downlinks could be on 869.2 and 893.8 Mhz so the phone could have to tune across a wider range between the SDCCH and TCH for example. Thanks!

9 years, 1 month

Re: GPRS on osmo-trx not working

by Alexander Chemeris

On Jun 29, 2016 10:04 PM, "Tom Tsou" <tom(a)tsou.cc> wrote: > > On Wed, Jun 29, 2016 at 8:31 AM, Neels Hofmeyr <nhofmeyr(a)sysmocom.de> wrote: > Another non-startup error message I found is bad PDTCH and PTCCH and > blocks under ideal RF signal conditions. It appears that you have seen > this behavior as well. > > DL1C <0006> scheduler_trx.c:835 Received bad data frame at fn=372020 > (12/104) for PTCCH > DL1C <0006> scheduler_trx.c:918 Received bad PDTCH block ending at > fn=310516 (76/104) for PDTCH > > The cause of these errors with excellent signal is the following piece > of code where zero-filled buffers are passed to the decoder. I have no > idea why this is done. Removing the code prevents the bad PDTCH/PTCCH > blocks with no loss of GPRS functionality. > > diff --git a/src/common/scheduler.c b/src/common/scheduler.c > @@ -1598,10 +1598,6 @@ int trx_sched_ul_burst() > > func(l1t, tn, fn, chan, bid, bits, rssi, toa); > } else if (chan != TRXC_RACH && !l1cs->ho_rach_detect) { > - sbit_t spare[148]; > - > - memset(spare, 0, 148); > - func(l1t, tn, fn, chan, bid, spare, -128, 0); > } Each L2 frame consists of several L1 bursts, so you need to accumulate them all before you can pass them to Viterbi for decoding. If I remember this part of the code correctly, this zeroing is required to make this work when there are lost bursts. E.g. if you need 4 bursts, but you only received bursts 0, 1 and 2 you should let the device know that your missing burst 3. If you don't do that, decoder won't run at all and to will miss what could be a decodable frame. By disabling this code you essentially start decoding only perfect frames, which are obviously decoded fine in perfect conditions. I.e. this only makes the actual problem, whatever it is. Please excuse typos. Written with a touchscreen keyboard. -- Regards, Alexander Chemeris CEO Fairwaves, Inc. https://fairwaves.co

9 years, 1 month

scope of scheduler.c and trx_sched_*

by Neels Hofmeyr

I notice that apparently osmo-bts-trx is the only caller of the trx_sched_* API, yet it is implemented in common/scheduler.c and compiled to libl1sched.a. Is osmo-bts-trx really the only caller? Also in osmo-bts-trx, the "trx" to me means SDR, like B200. But any BTS has one or more TRXs. So why isn't it osmo-bts-sdr? That's why I thought: maybe trx_sched_ is for all BTS models? Thanks for any clarification / confirmation :) ~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

9 years, 1 month

osmotrx init problem

by Max

Hi. I've got following problem while trying to make osmotrx work in multitrx setting on USRP B210: sudo chrt 20 ./Transceiver52M/osmo-trx -c 2 sudo chrt 15 ./src/osmo-bts-trx/osmo-bts-trx -t 2 -c ~/.config/osmocom/osmo-bts-mtrx.cfg -d DRTP:DCC:DRSL:DOML:DL1C:DTRX The bts quits from trx_if.c after checking "if (tcm->critical) {...". The command sequence seems to be the same for both phy0.0 and phy0.1 However 0.0 one accepts SETTSC command and 0.1 rejects it: trx_if.c:380 transceiver (phy0.1) rejected TRX command with response: 'RSP SETTSC 1 7' So far I fail to see where this difference comes from. Full log: <0001> oml.c:1249 Initializing OML attribute definitions <000b> trx_if.c:560 Open transceiver for phy0.0 <000b> trx_if.c:222 Adding new control 'CMD POWEROFF' <000b> trx_if.c:169 Sending control 'CMD POWEROFF' to phy0.0 <000b> trx_if.c:560 Open transceiver for phy0.1 <000b> trx_if.c:348 Response message: 'RSP POWEROFF 0' <0001> oml.c:547 Ignoring T200[0] (150 ms) as sent by BSC due to suspected LAPDm bug! <0001> oml.c:547 Ignoring T200[1] (180 ms) as sent by BSC due to suspected LAPDm bug! <0001> oml.c:547 Ignoring T200[2] (180 ms) as sent by BSC due to suspected LAPDm bug! <0001> oml.c:547 Ignoring T200[3] (1680 ms) as sent by BSC due to suspected LAPDm bug! <0001> oml.c:547 Ignoring T200[4] (520 ms) as sent by BSC due to suspected LAPDm bug! <0001> oml.c:547 Ignoring T200[5] (165 ms) as sent by BSC due to suspected LAPDm bug! <0001> oml.c:547 Ignoring T200[6] (1680 ms) as sent by BSC due to suspected LAPDm bug! <000b> trx_if.c:222 Adding new control 'CMD POWEROFF' <000b> trx_if.c:169 Sending control 'CMD POWEROFF' to phy0.0 <000b> trx_if.c:348 Response message: 'RSP POWEROFF 0' <0001> oml.c:884 ADM state already was Unlocked <000b> trx_if.c:222 Adding new control 'CMD RXTUNE 1783400' <000b> trx_if.c:169 Sending control 'CMD RXTUNE 1783400' to phy0.0 <000b> trx_if.c:222 Adding new control 'CMD TXTUNE 1878400' <000b> trx_if.c:222 Adding new control 'CMD SETTSC 7' <000b> trx_if.c:222 Adding new control 'CMD POWERON' <000b> trx_if.c:222 Adding new control 'CMD SETRXGAIN 1' <000b> trx_if.c:222 Adding new control 'CMD SETPOWER 0' <000b> trx_if.c:222 Adding new control 'CMD SETSLOT 0 4' <0005> paging.c:545 Paging: BS_AG_BLKS_RES = 0 != 1 not fully supported <000b> trx_if.c:348 Response message: 'RSP RXTUNE 0 1783400' <000b> trx_if.c:169 Sending control 'CMD TXTUNE 1878400' to phy0.0 <000b> trx_if.c:348 Response message: 'RSP TXTUNE 0 1878400' <000b> trx_if.c:169 Sending control 'CMD SETTSC 7' to phy0.0 <000b> trx_if.c:348 Response message: 'RSP SETTSC 0 7' <000b> trx_if.c:169 Sending control 'CMD POWERON' to phy0.0 <0005> paging.c:545 Paging: BS_AG_BLKS_RES = 0 != 1 not fully supported <000b> trx_if.c:222 Adding new control 'CMD SETSLOT 1 7' <000b> trx_if.c:222 Adding new control 'CMD SETSLOT 2 13' <000b> trx_if.c:222 Adding new control 'CMD SETSLOT 3 13' <000b> trx_if.c:222 Adding new control 'CMD SETSLOT 4 13' <000b> trx_if.c:348 Response message: 'RSP POWERON 0' <000b> trx_if.c:169 Sending control 'CMD SETRXGAIN 1' to phy0.0 <000b> trx_if.c:348 Response message: 'RSP SETRXGAIN 0 1' <000b> trx_if.c:169 Sending control 'CMD SETPOWER 0' to phy0.0 <000b> trx_if.c:348 Response message: 'RSP SETPOWER 0 0' <000b> trx_if.c:169 Sending control 'CMD SETSLOT 0 4' to phy0.0 <000b> trx_if.c:348 Response message: 'RSP SETSLOT 0 0 4' <000b> trx_if.c:169 Sending control 'CMD SETSLOT 1 7' to phy0.0 <000b> trx_if.c:348 Response message: 'RSP SETSLOT 0 1 7' <000b> trx_if.c:169 Sending control 'CMD SETSLOT 2 13' to phy0.0 <000b> trx_if.c:348 Response message: 'RSP SETSLOT 0 2 13' <000b> trx_if.c:169 Sending control 'CMD SETSLOT 3 13' to phy0.0 <000b> trx_if.c:348 Response message: 'RSP SETSLOT 0 3 13' <000b> trx_if.c:169 Sending control 'CMD SETSLOT 4 13' to phy0.0 <000b> trx_if.c:348 Response message: 'RSP SETSLOT 0 4 13' <000b> trx_if.c:222 Adding new control 'CMD SETSLOT 5 13' <000b> trx_if.c:169 Sending control 'CMD SETSLOT 5 13' to phy0.0 <000b> trx_if.c:348 Response message: 'RSP SETSLOT 0 5 13' <000b> trx_if.c:222 Adding new control 'CMD SETSLOT 6 13' <000b> trx_if.c:169 Sending control 'CMD SETSLOT 6 13' to phy0.0 <000b> trx_if.c:348 Response message: 'RSP SETSLOT 0 6 13' <000b> trx_if.c:222 Adding new control 'CMD SETSLOT 7 13' <000b> trx_if.c:169 Sending control 'CMD SETSLOT 7 13' to phy0.0 <000b> trx_if.c:348 Response message: 'RSP SETSLOT 0 7 13' <0001> oml.c:884 ADM state already was Unlocked <000b> trx_if.c:222 Adding new control 'CMD RXTUNE 1783800' <000b> trx_if.c:169 Sending control 'CMD RXTUNE 1783800' to phy0.1 <000b> trx_if.c:222 Adding new control 'CMD TXTUNE 1878800' <000b> trx_if.c:222 Adding new control 'CMD SETTSC 7' <000b> trx_if.c:222 Adding new control 'CMD SETSLOT 0 7' <000b> trx_if.c:348 Response message: 'RSP RXTUNE 0 1783800' <000b> trx_if.c:169 Sending control 'CMD TXTUNE 1878800' to phy0.1 <000b> trx_if.c:348 Response message: 'RSP TXTUNE 0 1878800' <000b> trx_if.c:169 Sending control 'CMD SETTSC 7' to phy0.1 <000b> trx_if.c:348 Response message: 'RSP SETTSC 1 7' <000b> trx_if.c:380 transceiver (phy0.1) rejected TRX command with response: 'RSP SETTSC 1 7' <0001> bts.c:203 Shutting down BTS 0, Reason TRX-CTRL-MSG: CRITICAL <000b> trx_if.c:222 Adding new control 'CMD POWEROFF' <000b> trx_if.c:169 Sending control 'CMD POWEROFF' to phy0.0 <000b> trx_if.c:348 Response message: 'RSP POWEROFF 0' <0001> oml.c:547 Ignoring T200[0] (150 ms) as sent by BSC due to suspected LAPDm bug! <0001> oml.c:547 Ignoring T200[1] (180 ms) as sent by BSC due to suspected LAPDm bug! <0001> oml.c:547 Ignoring T200[2] (180 ms) as sent by BSC due to suspected LAPDm bug! <0001> oml.c:547 Ignoring T200[3] (1680 ms) as sent by BSC due to suspected LAPDm bug! <0001> oml.c:547 Ignoring T200[4] (520 ms) as sent by BSC due to suspected LAPDm bug! <0001> oml.c:547 Ignoring T200[5] (165 ms) as sent by BSC due to suspected LAPDm bug! <0001> oml.c:547 Ignoring T200[6] (1680 ms) as sent by BSC due to suspected LAPDm bug! <0001> oml.c:884 ADM state already was Unlocked <000b> trx_if.c:222 Adding new control 'CMD POWERON' <000b> trx_if.c:169 Sending control 'CMD POWERON' to phy0.0 <000b> trx_if.c:222 Adding new control 'CMD SETRXGAIN 1' <000b> trx_if.c:222 Adding new control 'CMD SETPOWER 0' <000b> trx_if.c:222 Adding new control 'CMD SETSLOT 0 4' <000b> trx_if.c:222 Adding new control 'CMD SETSLOT 1 7' <000b> trx_if.c:222 Adding new control 'CMD SETSLOT 2 13' <000b> trx_if.c:222 Adding new control 'CMD SETSLOT 3 13' <000b> trx_if.c:222 Adding new control 'CMD SETSLOT 4 13' <000b> trx_if.c:222 Adding new control 'CMD SETSLOT 5 13' <000b> trx_if.c:222 Adding new control 'CMD SETSLOT 6 13' <000b> trx_if.c:222 Adding new control 'CMD SETSLOT 7 13' <0001> oml.c:884 ADM state already was Unlocked <0001> oml.c:884 ADM state already was Unlocked <0001> oml.c:884 ADM state already was Unlocked <0001> oml.c:884 ADM state already was Unlocked <000b> trx_if.c:348 Response message: 'RSP POWERON 0' <000b> trx_if.c:169 Sending control 'CMD SETRXGAIN 1' to phy0.0 <000b> trx_if.c:348 Response message: 'RSP SETRXGAIN 0 1' <000b> trx_if.c:169 Sending control 'CMD SETPOWER 0' to phy0.0 <000b> trx_if.c:348 Response message: 'RSP SETPOWER 0 0' <000b> trx_if.c:169 Sending control 'CMD SETSLOT 0 4' to phy0.0 <000b> trx_if.c:348 Response message: 'RSP SETSLOT 0 0 4' <000b> trx_if.c:169 Sending control 'CMD SETSLOT 1 7' to phy0.0 <000b> trx_if.c:348 Response message: 'RSP SETSLOT 0 1 7' <000b> trx_if.c:169 Sending control 'CMD SETSLOT 2 13' to phy0.0 <000b> trx_if.c:348 Response message: 'RSP SETSLOT 0 2 13' <000b> trx_if.c:169 Sending control 'CMD SETSLOT 3 13' to phy0.0 <000b> trx_if.c:348 Response message: 'RSP SETSLOT 0 3 13' <000b> trx_if.c:169 Sending control 'CMD SETSLOT 4 13' to phy0.0 <000b> trx_if.c:348 Response message: 'RSP SETSLOT 0 4 13' <000b> trx_if.c:169 Sending control 'CMD SETSLOT 5 13' to phy0.0 <000b> trx_if.c:348 Response message: 'RSP SETSLOT 0 5 13' <000b> trx_if.c:169 Sending control 'CMD SETSLOT 6 13' to phy0.0 <000b> trx_if.c:348 Response message: 'RSP SETSLOT 0 6 13' <000b> trx_if.c:169 Sending control 'CMD SETSLOT 7 13' to phy0.0 <000b> trx_if.c:348 Response message: 'RSP SETSLOT 0 7 13' <0001> oml.c:884 ADM state already was Unlocked <0001> oml.c:884 ADM state already was Unlocked <0001> oml.c:884 ADM state already was Unlocked <0001> oml.c:884 ADM state already was Unlocked <000b> trx_if.c:222 Adding new control 'CMD SETSLOT 0 7' <000b> trx_if.c:222 Adding new control 'CMD SETSLOT 1 1' <000b> trx_if.c:222 Adding new control 'CMD SETSLOT 2 1' <000b> trx_if.c:222 Adding new control 'CMD SETSLOT 3 1' <000b> trx_if.c:222 Adding new control 'CMD SETSLOT 4 1' <000b> trx_if.c:222 Adding new control 'CMD SETSLOT 5 1' <000b> trx_if.c:222 Adding new control 'CMD SETSLOT 6 1' <000b> trx_if.c:222 Adding new control 'CMD SETSLOT 7 1' <0001> oml.c:884 ADM state already was Unlocked <0001> oml.c:884 ADM state already was Unlocked <0001> oml.c:884 ADM state already was Unlocked <0001> oml.c:884 ADM state already was Unlocked <0001> oml.c:884 ADM state already was Unlocked <0001> oml.c:884 ADM state already was Unlocked <0001> oml.c:884 ADM state already was Unlocked <0001> oml.c:884 ADM state already was Unlocked <000b> trx_if.c:138 Clock indication: fn=999376 <000b> trx_if.c:470 TX burst tn=0 fn=999396 pwr=0 <000b> trx_if.c:470 TX burst tn=1 fn=999396 pwr=0 <000b> trx_if.c:470 TX burst tn=2 fn=999396 pwr=0 ... -- 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

9 years, 1 month

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OpenBSC June 2016