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pespin gerrit-no-reply at lists.osmocom.orgHello ttsou, tnt, fixeria, laforge, Jenkins Builder, Hoernchen,
I'd like you to reexamine a change. Please visit
https://gerrit.osmocom.org/c/osmo-trx/+/16668
to look at the new patch set (#3).
Change subject: radioInterfaceMulti: Fail to tune on freq not following multi-arfcn restrictions
......................................................................
radioInterfaceMulti: Fail to tune on freq not following multi-arfcn restrictions
multi-arfcn feature uses a hardcoded disposition of logical channels on
a physical channel. Logical channels in the phisical channel are
separated by MCBTS_SPACING Hz, that is 4 GSM ARFCNs.
As a result, multi-arfcn restricts the TRX ARFCN setup to the following:
ARFCN(TRX0)=N, ARFCN(TRX1)=N+1*4, ARFCN(TRX2)=N+2*4, ...
Let's make sure radioInterfaceMulti verifies the requested Rx/Tx
frequencies for each logical channel over TRXC match the restriction
explained above. It will check freq going to be set is indeed separated
by MCBTS_SPACING from already set channels, making sure the ARFCN series
is consistent.
Otherwise, before this patch, one could set in osmo-bsc:
ARFCN(TRX0)=N, ARFCN(TRX1)=N+2
and osmo-trx would silently ack the related Rx/TxTUNE TRXC commands, but
actually still transmit on ARFCN N+4 instead. As a result, in this
scenario TRX!=0 were unusable with multi-arfcn.
Related: OS#4207
Change-Id: I2f3d66a611d3a489b3e4d9431994f4ec77b4460f
---
M Transceiver52M/radioInterface.h
M Transceiver52M/radioInterfaceMulti.cpp
2 files changed, 59 insertions(+), 22 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/osmo-trx refs/changes/68/16668/3
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Gerrit-Project: osmo-trx
Gerrit-Branch: master
Gerrit-Change-Id: I2f3d66a611d3a489b3e4d9431994f4ec77b4460f
Gerrit-Change-Number: 16668
Gerrit-PatchSet: 3
Gerrit-Owner: pespin <pespin at sysmocom.de>
Gerrit-Reviewer: Hoernchen <ewild at sysmocom.de>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: fixeria <axilirator at gmail.com>
Gerrit-Reviewer: laforge <laforge at osmocom.org>
Gerrit-Reviewer: pespin <pespin at sysmocom.de>
Gerrit-Reviewer: tnt <tnt at 246tNt.com>
Gerrit-Reviewer: ttsou <tom at tsou.cc>
Gerrit-MessageType: newpatchset
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