osmocom-commitlog April 2015

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osmo-trx.git branch achemeris/no-dsp-tuning created. 8e9ff3aa0644d96dd25271e98ca0e7c7dd38de73
by gitosis＠osmocom.org 09 Apr '15

09 Apr '15

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osmo-bts.git branch achemeris/ber updated. 0.3.0-252-g6d48aa4
by gitosis＠osmocom.org 09 Apr '15

09 Apr '15

This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "Osmocom BTS-side code (Abis, scheduling, ...)". The branch, achemeris/ber has been updated discards cae9fb70692d1f5f75aba93ce4f0ce3514dc249b (commit) discards c5bb8e8a4e5174e608b8b67aa6d24190dc61bc1e (commit) discards 71e5b1d6778118682aed88dae741380ab8350e62 (commit) via 6d48aa42b31aaf54932d67e80d6dc66c328cda95 (commit) via 3820839991cd993ecc5d5f1d158ff13749e06ad9 (commit) via 675c4a91f3c4a3b945763f87d0ed1e1708bf83b2 (commit) This update added new revisions after undoing existing revisions. That is to say, the old revision is not a strict subset of the new revision. This situation occurs when you --force push a change and generate a repository containing something like this: * -- * -- B -- O -- O -- O (cae9fb70692d1f5f75aba93ce4f0ce3514dc249b) \ N -- N -- N (6d48aa42b31aaf54932d67e80d6dc66c328cda95) When this happens we assume that you've already had alert emails for all of the O revisions, and so we here report only the revisions in the N branch from the common base, B. Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below. - Log ----------------------------------------------------------------- http://cgit.osmocom.org/osmo-bts/commit/?id=6d48aa42b31aaf54932d67e80d6dc66… commit 6d48aa42b31aaf54932d67e80d6dc66c328cda95 Author: Alexander Chemeris <Alexander.Chemeris(a)gmail.com> Date: Thu Apr 9 13:24:15 2015 +0300 trx: More logging for voice frame decoding functions. http://cgit.osmocom.org/osmo-bts/commit/?id=3820839991cd993ecc5d5f1d158ff13… commit 3820839991cd993ecc5d5f1d158ff13749e06ad9 Author: Alexander Chemeris <Alexander.Chemeris(a)gmail.com> Date: Tue Apr 7 21:17:01 2015 +0300 tests: Update bursts_test to accommodate BER calculations. http://cgit.osmocom.org/osmo-bts/commit/?id=675c4a91f3c4a3b945763f87d0ed1e1… commit 675c4a91f3c4a3b945763f87d0ed1e1708bf83b2 Author: Alexander Chemeris <Alexander.Chemeris(a)gmail.com> Date: Mon Apr 6 00:12:02 2015 +0300 trx: Implement BER calculations. A known issue with this code is that BER is not updated for lost TCH frames, because osmo-trx doesn't send any indication for them and we don't have a callback to handle this. Otherwise the code seem to work fine. ----------------------------------------------------------------------- Summary of changes: src/osmo-bts-trx/gsm0503_coding.c | 19 +++++++++++++++++++ src/osmo-bts-trx/gsm0503_coding.h | 20 ++++++++++++++++++++ src/osmo-bts-trx/l1_if.c | 1 + src/osmo-bts-trx/scheduler.c | 1 + tests/bursts/bursts_test.c | 1 + 5 files changed, 42 insertions(+) hooks/post-receive -- Osmocom BTS-side code (Abis, scheduling, ...)

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osmo-bts.git branch achemeris/ber-test deleted. 0.3.0-256-g1e5cb7a
by gitosis＠osmocom.org 09 Apr '15

09 Apr '15

This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "Osmocom BTS-side code (Abis, scheduling, ...)". The branch, achemeris/ber-test has been deleted was 1e5cb7aefd32b9fe37b573370678be35f6806d40 ----------------------------------------------------------------------- 1e5cb7aefd32b9fe37b573370678be35f6806d40 trx: Correct MS power display in a log message. ----------------------------------------------------------------------- hooks/post-receive -- Osmocom BTS-side code (Abis, scheduling, ...)

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osmo-bts.git branch achemeris/ber updated. 0.3.0-252-gcae9fb7
by gitosis＠osmocom.org 09 Apr '15

09 Apr '15

This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "Osmocom BTS-side code (Abis, scheduling, ...)". The branch, achemeris/ber has been updated discards 4a545be0f9e09865bb3b4b04fb39ebc50a006386 (commit) discards 741364453c41442cd01579ae4264261482a7350d (commit) discards f6edb3349c63df3aa943cff35edfe781e4c3e8b6 (commit) discards 31fa15c2f01ba81f018f5f3dec61fb1b38aae624 (commit) via cae9fb70692d1f5f75aba93ce4f0ce3514dc249b (commit) via c5bb8e8a4e5174e608b8b67aa6d24190dc61bc1e (commit) via 71e5b1d6778118682aed88dae741380ab8350e62 (commit) This update added new revisions after undoing existing revisions. That is to say, the old revision is not a strict subset of the new revision. This situation occurs when you --force push a change and generate a repository containing something like this: * -- * -- B -- O -- O -- O (4a545be0f9e09865bb3b4b04fb39ebc50a006386) \ N -- N -- N (cae9fb70692d1f5f75aba93ce4f0ce3514dc249b) When this happens we assume that you've already had alert emails for all of the O revisions, and so we here report only the revisions in the N branch from the common base, B. Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below. - Log ----------------------------------------------------------------- http://cgit.osmocom.org/osmo-bts/commit/?id=cae9fb70692d1f5f75aba93ce4f0ce3… commit cae9fb70692d1f5f75aba93ce4f0ce3514dc249b Author: Alexander Chemeris <Alexander.Chemeris(a)gmail.com> Date: Thu Apr 9 13:24:15 2015 +0300 trx: More logging for voice frame decoding functions. http://cgit.osmocom.org/osmo-bts/commit/?id=c5bb8e8a4e5174e608b8b67aa6d2419… commit c5bb8e8a4e5174e608b8b67aa6d24190dc61bc1e Author: Alexander Chemeris <Alexander.Chemeris(a)gmail.com> Date: Tue Apr 7 21:17:01 2015 +0300 tests: Update bursts_test to accommodate BER calculations. http://cgit.osmocom.org/osmo-bts/commit/?id=71e5b1d6778118682aed88dae741380… commit 71e5b1d6778118682aed88dae741380ab8350e62 Author: Alexander Chemeris <Alexander.Chemeris(a)gmail.com> Date: Mon Apr 6 00:12:02 2015 +0300 trx: Implement BER calculations. A known issue with this code is that BER is not updated for lost TCH frames, because osmo-trx doesn't send any indication for them and we don't have a callback to handle this. Otherwise the code seem to work fine. ----------------------------------------------------------------------- Summary of changes: src/osmo-bts-trx/gsm0503_coding.c | 88 +++++++++++++++++++++++++++++---------- src/osmo-bts-trx/l1_if.c | 32 ++++++++++---- src/osmo-bts-trx/l1_if.h | 6 ++- src/osmo-bts-trx/scheduler.c | 71 +++++++++++++++++-------------- 4 files changed, 133 insertions(+), 64 deletions(-) hooks/post-receive -- Osmocom BTS-side code (Abis, scheduling, ...)

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osmo-bts.git branch achemeris/ber-test updated. 0.3.0-256-g1e5cb7a
by gitosis＠osmocom.org 09 Apr '15

09 Apr '15

1 0

osmo-trx.git branch achemeris/load_testing created. 0b8aa00bc7b8233fad019fb92d63066b1be9b8e4
by gitosis＠osmocom.org 09 Apr '15

09 Apr '15

This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "OpenBTS' transceiver retro-fit". The branch, achemeris/load_testing has been created at 0b8aa00bc7b8233fad019fb92d63066b1be9b8e4 (commit) - Log ----------------------------------------------------------------- http://cgit.osmocom.org/osmo-trx/commit/?id=0b8aa00bc7b8233fad019fb92d63066… commit 0b8aa00bc7b8233fad019fb92d63066b1be9b8e4 Author: Alexander Chemeris <Alexander.Chemeris(a)gmail.com> Date: Fri Sep 6 00:35:57 2013 +0400 conditional load testing (selected at compile time), turned on by default. http://cgit.osmocom.org/osmo-trx/commit/?id=1ed2e27d1931ee940ac67d818f40465… commit 1ed2e27d1931ee940ac67d818f40465edfef1c4e Author: Thomas Tsou <tom(a)tsou.cc> Date: Thu Sep 5 05:52:04 2013 -0400 Transceiver52M: Remove unused test code from main The commented out test code is not maintained and behaviour is unknown. Remove for clarity. Signed-off-by: Thomas Tsou <tom(a)tsou.cc> http://cgit.osmocom.org/osmo-trx/commit/?id=91ac9347493cee880f3233409241955… commit 91ac9347493cee880f3233409241955d19a4bb4e Author: Thomas Tsou <tom(a)tsou.cc> Date: Thu Sep 5 05:48:49 2013 -0400 Transceiver52M: Verify global config sanity at start The configuration table is instantiated as a global variable with no means to check constructor status. This means various types of database failure conditions (e.g. file existence, permissions, etc.) are not reported. This patch performs a small number of checks to make sure that the configuration is sane. Signed-off-by: Thomas Tsou <tom(a)tsou.cc> http://cgit.osmocom.org/osmo-trx/commit/?id=7398a756eae6cb0135ced0288678d97… commit 7398a756eae6cb0135ced0288678d97bc3dffdfc Author: Thomas Tsou <tom(a)tsou.cc> Date: Thu Sep 5 05:35:08 2013 -0400 Transceiver52M: Disable equalization for SPS greater than 1 Not supported by equalizer. Signed-off-by: Thomas Tsou <tom(a)tsou.cc> http://cgit.osmocom.org/osmo-trx/commit/?id=44389b80d50392862e436258ca8595b… commit 44389b80d50392862e436258ca8595b6c5a4503f Author: Thomas Tsou <tom(a)tsou.cc> Date: Thu Sep 5 05:32:23 2013 -0400 Transceiver52M: Add command line device args passing Signed-off-by: Thomas Tsou <tom(a)tsou.cc> http://cgit.osmocom.org/osmo-trx/commit/?id=3e24f791dd37b3205c394100268bfe5… commit 3e24f791dd37b3205c394100268bfe5629d7e66f Author: Thomas Tsou <tom(a)tsou.cc> Date: Thu Sep 5 05:08:09 2013 -0400 Transceiver52M: Setup dual Laurent pulse filter Provides improved transmit phase error performance below 1 degree RMS on certain devices. Requires use of 4 samples-per-symbol. Signed-off-by: Thomas Tsou <tom(a)tsou.cc> http://cgit.osmocom.org/osmo-trx/commit/?id=ef7c258cbf2b56a9dca6df68c4b03f6… commit ef7c258cbf2b56a9dca6df68c4b03f60cdd52bd4 Author: Thomas Tsou <tom(a)tsou.cc> Date: Wed Aug 21 20:58:00 2013 -0400 Transceiver52M: Refactor RACH and TSC detection Both RACH and normal bursts are detected with the same approach of midamble correlation combined with peak-to-average ratio. The difference is the midamble placements and lengths. Thus, there is no reason to have independent implementations. This patch creates a common call burstDetect(), while leaving the correlation window indexing in the original calls. Signed-off-by: Thomas Tsou <tom(a)tsou.cc> http://cgit.osmocom.org/osmo-trx/commit/?id=fb6e75789b9a87065814b4caf8c5cad… commit fb6e75789b9a87065814b4caf8c5cad77f253df6 Author: Thomas Tsou <tom(a)tsou.cc> Date: Mon Sep 2 14:39:35 2013 +0800 Transceiver52M: Disable energy detector The adaptive energy threshold gating suffers a near-far problem at certain gain levels. This is due to exponential threshold raising, but linear decreases. A large signal level followed by a period low signal level causes comparatively weak signals to go undetected. Additionally, the algorithm performs differently at multiple RF gain and/or input scaling levels. This patch switches solely to correlation based gating for burst detection. The main computational load with this approach is sub-sample peak interpolation, which we disable during intial detection. Signed-off-by: Thomas Tsou <tom(a)tsou.cc> http://cgit.osmocom.org/osmo-trx/commit/?id=23ee9002b4cafa22b3a905d1b9dda7e… commit 23ee9002b4cafa22b3a905d1b9dda7eafd8dc90d Author: Thomas Tsou <tom(a)tsou.cc> Date: Mon Sep 2 14:26:55 2013 +0800 Transceiver52M: Add SSE floating point / integer conversion Convertions are performed in multiples of 4 or 8. All loads are considered unaligned. Signed-off-by: Thomas Tsou <tom(a)tsou.cc> http://cgit.osmocom.org/osmo-trx/commit/?id=98e58b911108ad5dd5b15afbee5ccf9… commit 98e58b911108ad5dd5b15afbee5ccf971745754f Author: Thomas Tsou <tom(a)tsou.cc> Date: Wed Aug 21 13:59:52 2013 -0400 Transceiver52M: Add 4 samples-per-symbol Laurent pulse shape When 4 samples-per-symbol operation is selected, replace the existing pulse approximation, which becomes inaccurate with non-unit oversampling, with the primary pulse, C0, from the Laurent linear pulse approximation. Pierre Laurent, "Exact and Approximate Construction of Digital Phase Modulations by Superposition of Amplitude Modulated Pulses", IEEE Transactions of Communications, Vol. 34, No. 2, Feb 1986. Octave pulse generation code for the first three pulses of the linear approximation are included. Signed-off-by: Thomas Tsou <tom(a)tsou.cc> http://cgit.osmocom.org/osmo-trx/commit/?id=0c260aecaff0e74db4e32496747073d… commit 0c260aecaff0e74db4e32496747073de4e80cc23 Author: Thomas Tsou <tom(a)tsou.cc> Date: Thu Aug 22 18:40:43 2013 -0400 Transceiver52M: Reverse storage of convolution vectors With convolution changes, we now assume that tap values for filterting are stored in reverse. Along the same lines, the tap values used during correlation are no longer stored in reverse, however, they are still assumed to be conjugated. Signed-off-by: Thomas Tsou <tom(a)tsou.cc> http://cgit.osmocom.org/osmo-trx/commit/?id=acc9ee9fc05914d40250e13ae885bf8… commit acc9ee9fc05914d40250e13ae885bf88bd9e672b Author: Thomas Tsou <tom(a)tsou.cc> Date: Tue Aug 20 19:31:14 2013 -0400 Transceiver52M: Replace convolve and related calls with SSE implementation This large patch replaced the convolve() call with an SSE vector enabled version. The lower C and SSE intrinsic based code operates on fixed and aligned vectors for the filter taps. The storage format of interleaved I/Q for both complex and real vectors is maintained. SSE filter tap values must: 1. Start 16-byte aligned 2. Number with a multiple of 4 between 4 and 20 for real taps 3. Number with a multiple of 4 for complex taps Non-compliant values will fall back to non-SSE usage. Fixed length iterators mean that head and tail cases may require reallocation of the input vector, which is automatically handled by the upper C++ interface. Other calls are affected by these changes and adjusted or rewritten accordingly. The underlying algorithms, however, are unchanged. generateGSMPulse() analyzeTrafficBurst() detectRACHBurst() Intel SSE configuration is automatically detected and configured at build time with Autoconf macros. Signed-off-by: Thomas Tsou <tom(a)tsou.cc> http://cgit.osmocom.org/osmo-trx/commit/?id=9520ecd0c52b4c96078e2fc57008595… commit 9520ecd0c52b4c96078e2fc570085954ced8934d Author: Thomas Tsou <tom(a)tsou.cc> Date: Tue Aug 20 18:55:33 2013 -0400 Transceiver52M: Generate RACH correlation sequence at initialization There is no temporal dependency on when the RACH sequence is generated, so there is no need for transceiver to create it in response to a command from GSM core. If we power on the transceiver, we will need the RACH sequence, so just allocate it during initialization. Signed-off-by: Thomas Tsou <tom(a)tsou.cc> http://cgit.osmocom.org/osmo-trx/commit/?id=ab599f8b6d244bc36b76ad6c9a77cb3… commit ab599f8b6d244bc36b76ad6c9a77cb3a4c34edf5 Author: Thomas Tsou <tom(a)tsou.cc> Date: Tue Aug 20 18:41:50 2013 -0400 Transceiver52M: Remove logging from signal processing core The only logging outputs in the the signal processing library are debug lines that generate copious amounts of output while providing little useful information to the user. The relevant information (time-of-arrival, channel gains, etc.) can and should be logged from transceiver instance itself. Signed-off-by: Thomas Tsou <tom(a)tsou.cc> http://cgit.osmocom.org/osmo-trx/commit/?id=d6ed8c0b0e986f608c1f81266e97f2e… commit d6ed8c0b0e986f608c1f81266e97f2e1f7a9510d Author: Thomas Tsou <tom(a)tsou.cc> Date: Tue Aug 20 16:27:12 2013 -0400 Transceiver52M: Add destructors to correlation seqeunce objects Add destructor calls so we can avoid the nested vector deallocations. Also remove the unnecessary pointer NULL checks prior to destruction. Signed-off-by: Thomas Tsou <tom(a)tsou.cc> http://cgit.osmocom.org/osmo-trx/commit/?id=c8ce878daf1ea2c2e05cc6ed70dad20… commit c8ce878daf1ea2c2e05cc6ed70dad2069a69015f Author: Thomas Tsou <tom(a)tsou.cc> Date: Mon Sep 2 13:51:11 2013 +0800 Transceiver52M: Make GSM pulse filter internal to implementation There is no reason expose the pulse shaping filter outside of the signal processing calls. The main transceiver object makes no use of the filter and there's no reason to pass it around. Initialize the pulse shape with the signal processing library, and maintain an internal static member like many of the other library variables. Similarly destroy the object when the library is closed. Signed-off-by: Thomas Tsou <tom(a)tsou.cc> http://cgit.osmocom.org/osmo-trx/commit/?id=e01e1b3fa825cf7d80d5f0bb35062cb… commit e01e1b3fa825cf7d80d5f0bb35062cb6db7cdc49 Author: Thomas Tsou <tom(a)tsou.cc> Date: Mon Sep 2 13:24:13 2013 +0800 Transceiver52M: Rename samples-per-symbol variable names Because repeatedly typing mSamplesPerSymbol is giving me carpal tunnel syndrome. Replace with the much shorter, easier to type, and just as clear name of 'sps'. Signed-off-by: Thomas Tsou <tom(a)tsou.cc> ----------------------------------------------------------------------- hooks/post-receive -- OpenBTS' transceiver retro-fit

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osmo-trx.git branch achemeris/poweroff_hack created. 0832c0c34b2746345e06025575ac86a85e8943fe
by gitosis＠osmocom.org 09 Apr '15

09 Apr '15

1 0

osmo-trx.git branch achemeris/rtmd created. 9fb1c0bbc0b2b3e9edd6d73ec0b5640642d87841
by gitosis＠osmocom.org 09 Apr '15

09 Apr '15

1 0

osmo-trx.git branch achemeris/stable_threads created. 0ffe815bbce78c896a6cc0b8a689afdfcfe4f5ae
by gitosis＠osmocom.org 09 Apr '15

09 Apr '15

1 0

osmo-bts.git branch achemeris/ber-test updated. 0.3.0-255-gf0405b1
by gitosis＠osmocom.org 08 Apr '15

08 Apr '15

1 0

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osmocom-commitlog April 2015