4 Apr
2015
4 Apr
'15
8 p.m.
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- Log -----------------------------------------------------------------
http://cgit.osmocom.org/openbsc/commit/?id=6f6cbf7c5dedfd6335024004b1d21809…
commit 6f6cbf7c5dedfd6335024004b1d21809e806a40d
Author: Holger Hans Peter Freyther <holger(a)moiji-mobile.com>
Date: Sat Apr 4 19:35:22 2015 +0200
bts: "Repair" broken channels if we receive the release ack
We had issues with odd behavior on the nanoBTS which lead
to the introduction of the "broken" state. On busy multi
BTS cells (e.g. rhizomatica) with wifi backhaul the timeout
we set to wait for a RF Channe Release ACK is sometimes too
little and channels are marked broken that look to be okay
(besides the still to be determined delay).
In case of a sysmoBTS we now know that we can change the
state of a broken channel back to normal in case we do
receive the right response.
Manually verified using the Smalltalk BTS code
PackageLoader fileInPackage: 'FakeBTS'
bts := FakeBTS.BTS new.
bts btsId: '1903/0/0'.
bts connect: 'localhost'.
bts waitForBTSReady.
test := FakeBTS.OpenBSCTest new.
test bts: bts.
test requireAnyChannel
... wait for NITB output
<0004> abis_rsl.c:223 (bts=0,trx=0,ts=0,ss=0) Timeout during deactivation!
Marked as broken.
... process pending messages
stdin next
<0004> abis_rsl.c:735 (bts=0,trx=0,ts=0,ss=0) CHAN REL ACK for broken channel.
Releasing it.
So the channel went from broken to unallocated.
-----------------------------------------------------------------------
Summary of changes:
openbsc/include/openbsc/gsm_data.h | 11 +++++++++++
openbsc/src/libbsc/abis_rsl.c | 17 ++++++++++++++---
2 files changed, 25 insertions(+), 3 deletions(-)
hooks/post-receive
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The OpenBSC GSM Base Station Controller (+MSC/HLR/SGSN)