Change in osmo-bts[master]: MS Power Control Loop: Take C/I into account

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pespin gerrit-no-reply at lists.osmocom.org
Fri Sep 3 17:06:26 UTC 2021


Hello Jenkins Builder, laforge, fixeria, 

I'd like you to reexamine a change. Please visit

    https://gerrit.osmocom.org/c/osmo-bts/+/25268

to look at the new patch set (#7).

Change subject: MS Power Control Loop: Take C/I into account
......................................................................

MS Power Control Loop: Take C/I into account

This commit extends existing MS Power Control Loop algorithm to take
into account computed C/I values on the UL, received from MS. The
related C/I parameters used by the algorithm are configured at and
provided by the BSC, which transmits them to the BTS similar to already
existing parameters.

Using C/I instead of existing RxQual is preferred due to extended
granularity of C/I (bigger range than RxQual's 0-7).
Furthermore, existing literature (such as "GSM/EDGE: Evolution and Performance"
Table 10.3) provides detailed information about expected target values,
even different values for different channel types. Hence, it was decided
to support setting different MS Power Parameters for different channel
types.

These MS Power Parameters are Osmocom specific, ie. supported only by
newish versions of osmo-bts. Older versions of osmo-bts should ignore
the new IEs added just fine. The new IEs containing the MS POwer
Parameters are not send for non osmo-bts BTSs, hence this commit is
secure with regards to running  osmo-bsc against an ip.access BTS such
as nanoBTS.

Related: SYS#4917
Depends: libosmocore.git Change-Id Iffef0611430ad6c90606149c398d80158633bbca
Change-Id: I5dfd8ff9ab6b499646498b507624758dcc160fb6
---
M include/osmo-bts/gsm_data.h
M include/osmo-bts/power_control.h
M src/common/gsm_data.c
M src/common/l1sap.c
M src/common/power_control.c
M src/common/rsl.c
M src/common/vty.c
M tests/power/ms_power_loop_test.c
M tests/power/ms_power_loop_test.err
M tests/power/ms_power_loop_test.ok
10 files changed, 504 insertions(+), 137 deletions(-)


  git pull ssh://gerrit.osmocom.org:29418/osmo-bts refs/changes/68/25268/7
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To view, visit https://gerrit.osmocom.org/c/osmo-bts/+/25268
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Gerrit-Project: osmo-bts
Gerrit-Branch: master
Gerrit-Change-Id: I5dfd8ff9ab6b499646498b507624758dcc160fb6
Gerrit-Change-Number: 25268
Gerrit-PatchSet: 7
Gerrit-Owner: pespin <pespin at sysmocom.de>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: fixeria <vyanitskiy at sysmocom.de>
Gerrit-Reviewer: laforge <laforge at osmocom.org>
Gerrit-CC: dexter <pmaier at sysmocom.de>
Gerrit-CC: osmith <osmith at sysmocom.de>
Gerrit-MessageType: newpatchset
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