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- Log -----------------------------------------------------------------
http://cgit.osmocom.org/osmo-pcu/commit/?id=7c04380a7051eccf4049f534924f41205609c8e3
commit 7c04380a7051eccf4049f534924f41205609c8e3
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date: Fri Jun 26 14:34:08 2015 +0200
alloc: Set upgrade_to_multislot (TODO)
http://cgit.osmocom.org/osmo-pcu/commit/?id=5f0fb1bd4cb2f685d8a8d56d73979fbac9940432
commit 5f0fb1bd4cb2f685d8a8d56d73979fbac9940432
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date: Fri Jun 26 13:42:42 2015 +0200
ms: Add missing initialisers (FIXUP)
TODO:
- fixup the commit that adds these members
http://cgit.osmocom.org/osmo-pcu/commit/?id=9e527dc68019ed3899a2b6cc286f4bbc8bdc3185
commit 9e527dc68019ed3899a2b6cc286f4bbc8bdc3185
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date: Fri Jun 26 12:58:50 2015 +0200
WIP log mode single
http://cgit.osmocom.org/osmo-pcu/commit/?id=bce2a700a96b34a8966bd938ff392d67700cfb5e
commit bce2a700a96b34a8966bd938ff392d67700cfb5e
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date: Fri Jun 26 12:34:18 2015 +0200
WIP ensure to keep the first common TS
http://cgit.osmocom.org/osmo-pcu/commit/?id=1ce005af3f57013ad63ca60428d5e4573a405a4b
commit 1ce005af3f57013ad63ca60428d5e4573a405a4b
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date: Fri Jun 26 12:06:56 2015 +0200
WIP: Change common TS of all active TBFs (TODO)
http://cgit.osmocom.org/osmo-pcu/commit/?id=7418e00353963040a84ec7c97f7286f1e722ba47
commit 7418e00353963040a84ec7c97f7286f1e722ba47
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date: Fri Jun 26 11:52:38 2015 +0200
WIP algorithm B rework (TODO)
TODO:
- cm
- split into separate commits
http://cgit.osmocom.org/osmo-pcu/commit/?id=73d8bc51ce70d8c3a26c7a0c3b3c41d02d33a2db
commit 73d8bc51ce70d8c3a26c7a0c3b3c41d02d33a2db
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date: Mon Jun 22 16:14:23 2015 +0200
WIP Algorithm B UL (TODO)
Select UL slot based on slot usage (similar to algorithm A)
http://cgit.osmocom.org/osmo-pcu/commit/?id=e56f9a9a22552a762ac8449a81d6ced3339347f7
commit e56f9a9a22552a762ac8449a81d6ced3339347f7
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date: Mon Jun 22 14:42:49 2015 +0200
WIP Algo A (TODO)
TODO:
- Separate GprsMs changes
- Fixup
http://cgit.osmocom.org/osmo-pcu/commit/?id=7585bf720ee51198d6b891b544e1a5fceea8fa0e
commit 7585bf720ee51198d6b891b544e1a5fceea8fa0e
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date: Fri Jun 19 16:35:38 2015 +0200
tbf: Load balancing for algo A (TODO)
STATUS:
- <= min(32, N_PDCH * 7) UL TBFs
- <= 32 DL TBFs
TODO:
- split commits
- cm
- more testing
Ticket: #1794
Sponsored-by: On-Waves ehf
http://cgit.osmocom.org/osmo-pcu/commit/?id=1caadd419014d92ef50260720e27dcb825b51cca
commit 1caadd419014d92ef50260720e27dcb825b51cca
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date: Fri Jun 19 10:59:58 2015 +0200
tbf: Add BTS::ms_alloc method
Currently the code that creates the MS objects with tbf.cpp is
duplicated.
This commit moves the corresponding code into a new method. Since
there is no TLLI available there, the GprsMsStorage::create_ms method
has been refactored into two variants, one with TLLI/direction and
one without.
Sponsored-by: On-Waves ehf
http://cgit.osmocom.org/osmo-pcu/commit/?id=fb8a22cae8f6710d03e7027bf00a37152296ccd3
commit fb8a22cae8f6710d03e7027bf00a37152296ccd3
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date: Fri Jun 19 09:08:23 2015 +0200
tbf: Always create an MS object on TBF allocation
Currently the MS object are created when the TLLI gets known.
Therefore some information (TA, MS class) must be stored in the TBF
itself and is copied to the MS object later on. This would get even
more complex, if the allocation algorithms were extended based on
this scheme.
This commit ensures, that an MS object will always be created on TBF
allocation, even if the TLLI is not yet known. These 'anonymous'
objects are still managed by the MS storage. To avoid dangling
entries without a TLLI there (which cannnot be retrieved anyway), the
timer in the MS objects is not started after all TBF have been
detached, so that they get deleted immediately in that case.
Note that an MS object can still be removed (e.g. by replacement)
from an existing TBF, so tbf->ms() can be NULL.
Ticket: #1794
Sponsored-by: On-Waves ehf
http://cgit.osmocom.org/osmo-pcu/commit/?id=c7853d691351fe36ee2b2325fd078d3d9fac6472
commit c7853d691351fe36ee2b2325fd078d3d9fac6472
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date: Thu Jun 18 17:16:26 2015 +0200
tbf: Pass the MS object around instead of old_tbf
Currently the old TBF (either uplink or downlink) is passed around at
TBF allocation mainly to get information about the MS. To implement
more complex allocation algorithms, the MS object itself will be
needed anyway.
This commit replaces the old_tbf arguments by MS object arguments.
Sponsored-by: On-Waves ehf
http://cgit.osmocom.org/osmo-pcu/commit/?id=51cf98a06495c6b5b4c666285f3ecc3a0135aa92
commit 51cf98a06495c6b5b4c666285f3ecc3a0135aa92
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date: Thu Jun 18 15:49:52 2015 +0200
tbf: Remove update_tlli method
This method does not do anything anymore, it's functionality has been
taken over by update_ms.
This commit removes gprs_rlcmac_tbf::update_tlli completely.
Sponsored-by: On-Waves ehf
http://cgit.osmocom.org/osmo-pcu/commit/?id=b671dbfe94789d849880b8c6f2a036f7db04b037
commit b671dbfe94789d849880b8c6f2a036f7db04b037
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date: Mon Jun 15 14:32:33 2015 +0200
llc: Move storage of timestamps into gprs_llc_queue
Currently the receive and expiry timestamps are prepended to the LLC
msgb before it is passed to gprs_llc_queue::enqueue(). Since this meta
information should not be counted as LLC octets, the gprs_llc_queue
needs to known about this (unless the correction was done in the LLC
layer).
This commit moves the meta information storage code into
gprs_llc_queue. The meta data is now stored in the control block
(cb) area of the msgb.
Note that the info pointer that is returned from the dequeue method
is only valid if that method returns a (non-NULL) msgb. It must not
be used after that msgb has been modified or freed.
Sponsored-by: On-Waves ehf
http://cgit.osmocom.org/osmo-pcu/commit/?id=1e50a3dadef7823b6f50bd387f84f324029a217d
commit 1e50a3dadef7823b6f50bd387f84f324029a217d
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date: Tue Jun 16 10:18:42 2015 +0200
llc: Make timeval arguments const
Some struct timeval pointer arguments do not have the const qualifier,
albeit the methods do not write to the structures. The next commit
will change related pointers to const, so this commit provides the
required constness.
Sponsored-by: On-Waves ehf
http://cgit.osmocom.org/osmo-pcu/commit/?id=70b96aa232bd9784a94247bf7b193cb2147ada9d
commit 70b96aa232bd9784a94247bf7b193cb2147ada9d
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date: Fri Jun 12 10:52:34 2015 +0200
ms: Reduce DL CS level if only a few LLC bytes are left
If just a few bytes are left to send to the MS, it makes sense to
reduce the coding scheme level to increase the throughput. This
has been shown by Chen and Goodman in their paper "Theoretical
Analysis of GPRS Throughput and Delay". See their throughput over C/I
measurement graphs (figures 4 and 5 in the paper) for details.
This commit implements a simplified CS downgrade feature for the
downlink. The coding scheme will be downgraded if there are only a
few octets are left to be send over the TBF (see the
downgrade-threshold command below) and the NACK rate is not low (the
CS will not get degraded on a high quality RF link). As an exception,
CS-3 will be degraded to CS-1, since CS-2 does not improve the
throughput in general when a few small packets are sent and the
signal fades slowly (see Chen/Goodman).
The following VTY command is added to the config-pcu node:
- cs downgrade-threshold <1-10000>
- cs no downgrade-threshold
to set the threshold of the number of remaining bytes to be RLC/MAC
encoded. The CS will only be reduced, if the number is below the
threshold. The 'no' command disables this feature completely. The
default value is 200 octets.
Sponsored-by: On-Waves ehf
http://cgit.osmocom.org/osmo-pcu/commit/?id=07eb655244bd973a9bdf69ef958ee06cf867a0bb
commit 07eb655244bd973a9bdf69ef958ee06cf867a0bb
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date: Mon Jun 15 11:05:44 2015 +0200
llc: Keep track of the number of stored LLC octets
To get the number of LLC octets that are stored in the queue, this
commit adds a m_queue_octets member along with a octets() method.
This value is updated similarly to m_queue_size on each modifying
method call.
Sponsored-by: On-Waves ehf
http://cgit.osmocom.org/osmo-pcu/commit/?id=1eae96ca2fe1e23def798ea90645538a4e4193e5
commit 1eae96ca2fe1e23def798ea90645538a4e4193e5
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date: Mon Jun 15 11:19:13 2015 +0200
llc: Add missing include directive to llc.h
Currently struct llist_head is used without declaration which
accidently did not produce an error so far.
This commit adds the missing include directive.
Sponsored-by: On-Waves ehf
http://cgit.osmocom.org/osmo-pcu/commit/?id=626369c2fbbd1935d9ddc5aebd86c182e8c87083
commit 626369c2fbbd1935d9ddc5aebd86c182e8c87083
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date: Mon Jun 15 11:04:25 2015 +0200
llc/test: Add test program for LLC related tests
Sponsored-by: On-Waves ehf
http://cgit.osmocom.org/osmo-pcu/commit/?id=409efa1ec84c14aaa43bfac85ba4956e9f3cf16a
commit 409efa1ec84c14aaa43bfac85ba4956e9f3cf16a
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date: Fri Jun 12 14:06:09 2015 +0200
tbf: Fix downlink packet loss
When the MS is pinged with a longer interval, many packets get lost
even if the GprsMs object is kept. If the interval is above the time
where the DL TBF is in state FLOW (mainly influenced be the
dl-tbf-idle-time command), an new TBF must be requested via AGCH for
each ICMP PING message.
Currently the LLC frame containing the PING is immediately stored
in the TBF and gets lost, if TBF establishment fails for some reason.
This commit moves all calls to put_frame() to schedule_next_frame(),
where the data is moved from the LLC queue to the frame storage
within the TBF object. This method is only called from within
create_new_bsn() when the TBF is in the FLOW state and the frame is
going to be encoded immediately.
At all other places, where put_frame() has been called before, the
LLC message is just appended to the LLC queue in the GprsMs object.
This change effectively simplifies the related code parts, since
date/len information and discard notifications is no longer needed
there.
Ticket: #1759
Sponsored-by: On-Waves ehf
http://cgit.osmocom.org/osmo-pcu/commit/?id=411686402b6a7f148fd05c926d5fbce7a1802810
commit 411686402b6a7f148fd05c926d5fbce7a1802810
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date: Fri Jun 12 13:41:00 2015 +0200
tbf/test: Add test for DL LLC packet loss
Currently LLC frames are lost or even reordered when the TBF has be
established via the AGCH and the procedure fails for some reason.
This test tries to reproduce this behaviour by throwing away the
first TBF while calling the handle() method several times. The
results of create_dl_acked_block() are checked against expected
values (this is currently party disabled because the bug still
persists).
Ticket: #1759
Sponsored-by: On-Waves ehf
http://cgit.osmocom.org/osmo-pcu/commit/?id=04a108617ab904d7614966dfa9e4602bd1d4fae1
commit 04a108617ab904d7614966dfa9e4602bd1d4fae1
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date: Fri Jun 12 16:01:56 2015 +0200
ms: Store the NACK rate in the MS object
Currently the NACK/unconfirmed ratio is already passed to the
corresponding MS object, but the value is not being stored there.
This commit adds a member and a getter method and include the values
into the output of the 'show ms' command.
Sponsored-by: On-Waves ehf
http://cgit.osmocom.org/osmo-pcu/commit/?id=e1d2b3568afe914d5b9c77bafd48be5b35e2d1d4
commit e1d2b3568afe914d5b9c77bafd48be5b35e2d1d4
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date: Fri Jun 12 10:48:05 2015 +0200
tbf: Include CS into create_new_bsn log message
This change lets the test suite fail, so it get its own commit.
Sponsored-by: On-Waves ehf
http://cgit.osmocom.org/osmo-pcu/commit/?id=da1a79ef5b5c61981c94e58ba76d96d40f10d3f3
commit da1a79ef5b5c61981c94e58ba76d96d40f10d3f3
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date: Thu Jun 11 18:09:00 2015 +0200
l1: Add debug log messages for I_LEVEL
The I_LEVEL values that are obtained now look suspicious. They do not
seem to be contained in messages recorded via gsmtab.
To help debugging this issue, this commit adds related debug messages
that are generated while the encoded values are taken from the
RLC/MAC messages.
Sponsored-by: On-Waves ehf
http://cgit.osmocom.org/osmo-pcu/commit/?id=51b11510448bcca092db191d5f17a00892af9f71
commit 51b11510448bcca092db191d5f17a00892af9f71
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date: Thu Jun 11 16:54:50 2015 +0200
l1: Store measurement values sent by the MS
This commit extends the pcu_l1_meas structure by MS side measurement
values which are transmitted by PACKET DOWNLINK ACK/NACK and
PACKET RESOURCE REQUEST messages. The encoded values are remapped to
dB respectively % values. The values are stored in the corresponding
MS object (if there is one).
Note that the values are store as (rounded) integers, so some
different encodings are mapped to the same decoded value.
Sponsored-by: On-Waves ehf
http://cgit.osmocom.org/osmo-pcu/commit/?id=94cde130ca78d6ca1b5f815180ccdd363b234407
commit 94cde130ca78d6ca1b5f815180ccdd363b234407
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date: Tue Jun 9 09:44:36 2015 +0200
ms: Add UL CS selection based on L1 link quality
Currently the UL CS values are set to the corresponding DL CS value,
eventually limited by a maximum value. This approach does not reflect
the general situation of the RF link between ME and BTS, which is
rather asymmetric e.g. due to a lower degree of TX efficiency of the
built-in antenna. This means, that UL and DL CS control should be
decoupled for better results.
This commit adds automatic UL CS selection based on the link quality
measurement parameter. Each coding scheme is mapped to a link quality
range. If the link quality value leaves that range, the current UL CS
value is increased/decreased accordingly. This value will be copied
when the next PACKET_UPLINK_ACK_NACK or PACKET_UPLINK_ASSIGMENT is
sent to the MS.
The following VTY command will be added to the config-pcu node:
- cs link-quality-ranges cs1 <0-35> cs2 <0-35> <0-35>
cs3 <0-35> <0-35> cs4 <0-35>
which sets the ranges for the four coding schemes. For instance the
example below reflects the current default values:
cs link-quality-ranges cs1 6 cs2 5 8 cs3 7 13 cs4 12
set the following ranges, where the overlapping is used to configure
a hysteresis:
CS1: -inf .. 6
CS2: 5 .. 8
CS3: 7 .. 13
CS4: 12 .. inf
Sponsored-by: On-Waves ehf
http://cgit.osmocom.org/osmo-pcu/commit/?id=e4bcb62dbf89bf882805e3824251a3013f3eecd7
commit e4bcb62dbf89bf882805e3824251a3013f3eecd7
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date: Mon Jun 8 11:26:38 2015 +0200
ms: Store the L1 measurement values in the MS objects
This commits adds the GprsMs::update_l1_meas() and GprsMs::l1_meas()
methods to store and access the measurement values. The internal
state is updated depending on which values are actually set.
In addition, these values are shown in the output of the 'show ms
imsi|tlli' command.
Sponsored-by: On-Waves ehf
http://cgit.osmocom.org/osmo-pcu/commit/?id=20f6fd1b63355b9a3ab1423cb24b73ca27f57243
commit 20f6fd1b63355b9a3ab1423cb24b73ca27f57243
Author: Jacob Erlbeck <jerlbeck at sysmocom.de>
Date: Mon Jun 8 11:05:45 2015 +0200
l1: Pass all L1 measurements upwards
Currently only the RSSI value is passed to the upper layers. Other
values like TA and BER which are needed for TA update respectively CS
selection are not propagated.
This commit introduces and passes a struct that contains a set of
measurement values.
Sponsored-by: On-Waves ehf
-----------------------------------------------------------------------
Summary of changes:
src/Makefile.am | 1 +
src/bts.cpp | 31 +-
src/bts.h | 16 +
src/gprs_ms.cpp | 76 ++++-
src/gprs_ms.h | 29 +-
src/gprs_rlcmac_ts_alloc.cpp | 765 +++++++++++++++++++++++++++++++++++++++----
src/tbf.cpp | 36 ++
src/tbf.h | 7 +
tests/Makefile.am | 1 +
tests/alloc/AllocTest.cpp | 75 +++++
tests/tbf/TbfTest.err | 23 +-
11 files changed, 981 insertions(+), 79 deletions(-)
hooks/post-receive
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UNNAMED PROJECT