Change in osmo-bts[master]: bts-trx: Use TRXC cmd NOMTXPOWER to retrieve nominal tx power from os...

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Hoernchen gerrit-no-reply at lists.osmocom.org
Fri May 29 17:55:04 UTC 2020


Hoernchen has posted comments on this change. ( https://gerrit.osmocom.org/c/osmo-bts/+/18589 )

Change subject: bts-trx: Use TRXC cmd NOMTXPOWER to retrieve nominal tx power from osmo-trx
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Patch Set 2:

The spec says: "The range over which the BSS shall be capable of reducing its RF output power from its maximum level shall be nominally 30 dB, in 15 steps of nominally 2 dB."
The power level field has 5 bits of which 4 may be used to set the level, one is fixed to zero.
The b2xx series has a max rx gain of 76 dB and 89.8 dB max tx gain.

So there is nothing to retrieve, the nominal power needs to configured in the osmo-trx config for one specific device and frequency configuration that is being used, an the relative power reduction always has to be relative to the configured value.


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Gerrit-Project: osmo-bts
Gerrit-Branch: master
Gerrit-Change-Id: I682211f3d664c21f923ca4a530e0464ca383b6d9
Gerrit-Change-Number: 18589
Gerrit-PatchSet: 2
Gerrit-Owner: pespin <pespin at sysmocom.de>
Gerrit-Reviewer: Jenkins Builder
Gerrit-CC: Hoernchen <ewild at sysmocom.de>
Gerrit-Comment-Date: Fri, 29 May 2020 17:55:04 +0000
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