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| author | Pau Espin Pedrol <pespin@sysmocom.de> | 2021-09-20 14:22:37 +0200 |
|---|---|---|
| committer | Pau Espin Pedrol <pespin@sysmocom.de> | 2021-09-21 16:51:21 +0200 |
| commit | df612507d656305d92e1bae12983af6d51ddf35c (patch) | |
| tree | 9aee2155289b64957d4a68aa55779524a1f168b3 /doc | |
| parent | aa4d99fd8b11f922a2bc9828b427affa8e25560c (diff) | |
MS Power Control Loop: Support turn off C/I based logic
Setting LOWER_CMP_N and UPPER_CMP_N for all channel types can be quite
cumbersome and end up in lengthy config files. Let's instead add a
placeholder command to apply it to all channel types of a BTS at once.
This is useful specially since a user disabling C/I capabilities
probably does so because it may require a fair amount of fine-tuning
parameters to have it working perfectly. Hence, a user not willing to
spend time configuring those parameters correctly (and for which default
ones doesn't work properly) will require quick way to get rid of C/I
based MS Power Control Loop. By disabling C/I comparison, osmo-bts will
rely on RxLev only when applying the MS Power Control Loop, which is
fine for non noisy environments.
Related: SYS#4917
Change-Id: I0e1a1a9228a15e9ec9c41b7952b03e1d25309706
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/manuals/chapters/power_control.adoc | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/doc/manuals/chapters/power_control.adoc b/doc/manuals/chapters/power_control.adoc index 54cbd5ba2..bc112aadc 100644 --- a/doc/manuals/chapters/power_control.adoc +++ b/doc/manuals/chapters/power_control.adoc @@ -345,6 +345,14 @@ network <3> P0=2 out of N1=10 averages < L_CI_AMR_FR_XX_P => increase power. <4> P1=3 out of N2=4 averages > U_CI_AMR_FR_XX_P => decrease power. +NOTE: The BSC can instruct a BTS to disable C/I related logic in its +autonomous MS Power Control Loop for a given channel type (hence not taking C/I +measurements into account) by means of setting both related LOWER_CMP_N and +UPPER_CMP_N parameters to zero (see _ci-thresh-comp_ VTY command). For the sake +of easing configuration, a placeholder VTY command to disable C/I for all +channel types is available under VTY node _ms-power-control_ as *_ci-thresh-comp +disable all_*. + ==== Measurement averaging process 3GPP 45.008, section A.3.1 requires that the measurement values reported by both |