Change in osmo-bts[master]: measurement: ignore lost FACCH/H uplink measurements

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fixeria gerrit-no-reply at lists.osmocom.org
Fri Oct 30 09:33:03 UTC 2020


fixeria has posted comments on this change. ( https://gerrit.osmocom.org/c/osmo-bts/+/20980 )

Change subject: measurement: ignore lost FACCH/H uplink measurements
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Patch Set 1: Code-Review-1

(3 comments)

This approach relies on buggy behavior of osmo-bts-trx sending only one BFI instead of two. We need to fix osmo-bts-trx instead of adding such FACCH/H specific workarounds to the code? I hope the other BTS models send two BFIs on receipt of FACCH/H.

https://gerrit.osmocom.org/c/osmo-bts/+/20980/1//COMMIT_MSG 
Commit Message:

https://gerrit.osmocom.org/c/osmo-bts/+/20980/1//COMMIT_MSG@9 
PS1, Line 9: FACCH channel ist
It's not the 'channel' that is spread over 6 bursts, but a frame, right?
So 'FACCH frame is' looks more logical here.


https://gerrit.osmocom.org/c/osmo-bts/+/20980/1//COMMIT_MSG@11 
PS1, Line 11: up with one uplink measurement sample less
Yes, and this is not a valid behavior. We need to implement sending of the second BFI frame, because currently we send only one. Once we do that, the measurement logic would be broken again?


https://gerrit.osmocom.org/c/osmo-bts/+/20980/1/src/common/measurement.c 
File src/common/measurement.c:

https://gerrit.osmocom.org/c/osmo-bts/+/20980/1/src/common/measurement.c@670 
PS1, Line 670: Lost %u UL measurements
This looks and sounds confusing: we're not loosing anything...



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Gerrit-Project: osmo-bts
Gerrit-Branch: master
Gerrit-Change-Id: Ibf693aede8fffa6432cdcdcf5d52910493a1104b
Gerrit-Change-Number: 20980
Gerrit-PatchSet: 1
Gerrit-Owner: dexter <pmaier at sysmocom.de>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: fixeria <vyanitskiy at sysmocom.de>
Gerrit-Comment-Date: Fri, 30 Oct 2020 09:33:03 +0000
Gerrit-HasComments: Yes
Gerrit-Has-Labels: Yes
Gerrit-MessageType: comment
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