diff options
| author | Vadim Yanitskiy <vyanitskiy@sysmocom.de> | 2021-11-06 00:47:19 +0300 |
|---|---|---|
| committer | Vadim Yanitskiy <vyanitskiy@sysmocom.de> | 2021-11-10 14:45:12 +0300 |
| commit | 5944ff07a8bb0d6e6f86677b2a3265b2939ba69f (patch) | |
| tree | 881e109510e3e8a9af759eb3469d78a28b93f31e /doc | |
| parent | dd0dabbffce82c365a5de5295a24d21fabb14315 (diff) | |
gsm_data: use ascending order for interference boundaries
It's more logical to have the boundaries sorted in ascending order:
* band 1 represents lowest interference levels,
* band 5 represents highest interference levels.
Change-Id: Ie9bf4bf0c89418685b8ea5096332d22cfba7c521
Related: SYS#5313
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/manuals/chapters/interf_meas.adoc | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/doc/manuals/chapters/interf_meas.adoc b/doc/manuals/chapters/interf_meas.adoc index 62b08c4ae..c82ff4907 100644 --- a/doc/manuals/chapters/interf_meas.adoc +++ b/doc/manuals/chapters/interf_meas.adoc @@ -19,7 +19,7 @@ Below are the default values for them: network bts 0 interference-meas avg-period 6 <1> - interference-meas level-bounds -85 <2> -91 -97 -103 -109 -115 <3> + interference-meas level-bounds -115 <2> -109 -103 -97 -91 -85 <3> ---- <1> Averaging period (`Intave`) in SACCH multiframe periods (480ms). <2> Interference level boundary `0` (in dBm). @@ -34,11 +34,11 @@ According to 3GPP TS 48.008, there exist five interference bands and six averaged interference levels (initially in dBm) into these 5 bands. ---- --85 dBm -91 dBm -97 dBm -103 dBm -109 dBm -115 dBm - | <1> | <2> | <3> | <4> | <5> | <6> - +----------+----------+----------+----------+----------+ - | band 1 | band 2 | band 3 | band 4 | band 5 | - +----------+----------+----------+----------+----------+ +-115 dBm -109 dBm -103 dBm -97 dBm -91 dBm -85 dBm + | <1> | <2> | <3> | <4> | <5> | <6> + +----------+----------+----------+----------+----------+ + | band 1 | band 2 | band 3 | band 4 | band 5 | + +----------+----------+----------+----------+----------+ ---- <1> Interference level boundary `0` (outer). <2> Interference level boundary `X1`. @@ -49,7 +49,7 @@ averaged interference levels (initially in dBm) into these 5 bands. Unfortunately, it's not clearly defined by 3GPP how the BTS is supposed to map dBm values outside of the outer boundaries (`0` and `X5`) to band values. The -ip.access nanoBTS, for example, would map values -75 dBm and -120 dBm to bands +ip.access nanoBTS, for example, would map values -120 dBm and -75 dBm to bands 1 and 5, respectively. osmo-bts replicates this behavior. === PDCH and dynamic timeslot handling |