diff options
| author | Pau Espin Pedrol <pespin@sysmocom.de> | 2021-08-26 18:19:30 +0200 |
|---|---|---|
| committer | Pau Espin Pedrol <pespin@sysmocom.de> | 2021-09-03 18:57:13 +0200 |
| commit | 0617afdb5f4c0e38e9576c82092517197fbe478a (patch) | |
| tree | aac01d317d84812ef0e945242b6711dc07efdca4 /include/osmo-bts/gsm_data.h | |
| parent | 7c23017806dfc2919accb016e1ec0572a1313ad9 (diff) | |
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
Diffstat (limited to 'include/osmo-bts/gsm_data.h')
| -rw-r--r-- | include/osmo-bts/gsm_data.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/osmo-bts/gsm_data.h b/include/osmo-bts/gsm_data.h index 80f1833e..979e6d96 100644 --- a/include/osmo-bts/gsm_data.h +++ b/include/osmo-bts/gsm_data.h @@ -211,6 +211,14 @@ struct gsm_power_ctrl_params { /* Measurement averaging parameters for RxLev & RxQual */ struct gsm_power_ctrl_meas_params rxqual_meas; struct gsm_power_ctrl_meas_params rxlev_meas; + + /* Measurement averaging parameters for C/I, per chan type */ + struct gsm_power_ctrl_meas_params ci_fr_meas; + struct gsm_power_ctrl_meas_params ci_hr_meas; + struct gsm_power_ctrl_meas_params ci_amr_fr_meas; + struct gsm_power_ctrl_meas_params ci_amr_hr_meas; + struct gsm_power_ctrl_meas_params ci_sdcch_meas; + struct gsm_power_ctrl_meas_params ci_gprs_meas; }; /* Default MS/BS Power Control parameters */ |