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http://cgit.osmocom.org/osmo-bts/commit/?id=70c4dc8d706973c65e6bf088156f586…
commit 70c4dc8d706973c65e6bf088156f5862f4e036b4
Author: Harald Welte <laforge(a)gnumonks.org>
Date: Sat Dec 2 21:34:33 2017 +0100
osmo-bts-trx: Fix reported frame number during PRIM_INFO_MEAS
The upper layers (L1SAP, the common part of L1) *always* require frame
numbers in the uplink direction to be reported as the frame number of
the *first* burst, not the last burst of a given block.
This is particularly important in the case of passing up measurement
information, as we use this frame number to detect if the measurement
interval for that specific timeslot has just ended (and hence we must
process the measurements and send an uplink measurement report to the
BSC.
Before this patch, the measurement results were reported with the *last*
frame number, which caused the common/measurement.c code never detect
the end of a measurement window.
On TS2, tons of the following log messages were observed:
<0004> measurement.c:199 (bts=0,trx=0,ts=2,ss=0) no space for uplink
measurement, num_ul_meas=104
With this patch, it behves as expected: the measurements of 25 blocks
(= 100 bursts) are aggregated, after which point the report is computed
and sent. Subsequently, num_ul_meas is reset to 0 and the cycle
restarts.
Related: OS#2329
Change-Id: I1065ae9c400bb5240a63ab8213aee59aeb9ceeff
-----------------------------------------------------------------------
Summary of changes:
src/osmo-bts-trx/scheduler_trx.c | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)
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Osmocom BTS-side code (Abis, scheduling, ...)