diff options
| author | Philipp Maier <pmaier@sysmocom.de> | 2018-09-06 16:04:13 +0200 |
|---|---|---|
| committer | Harald Welte <laforge@gnumonks.org> | 2018-09-13 14:27:12 +0000 |
| commit | c78759055a223b9f48bdfd5523a9825e16cf0658 (patch) | |
| tree | a371379fdd8c966a05d4f1a2c722111150f0c750 /include | |
| parent | 6d701d0e051ec1c876f6cab1c5e60e67ca3fd3f6 (diff) | |
measurement: remove missed interval end detection
The function is_meas_overdue() was introduced to allow
lchan_meas_process_measurement() to detect when the end of a measurement
interval has been missed. Interval ends may be missed when the SACCH
block of the related measurement interval gets lost. This is due to the
fact that the SACCH block is used as a trigger to start the measurement
result computation.
The idea behind is_meas_overdue() was to check the frame number of the
current measurement against the frame number of the previous measurement
in order to see if there was a measurement for SACCH in between or not.
Unfortunately SACCH and TCH Voice data is not necessarly processed in
order by each phy. Depending on the phy there may be a jitter between
the timing of SACCH and TCH Voice. Depending on the phy this jitter may
be enough to mess up the timing so that we see a SACCH block earlier
than expected. So we can not use the current frame number of TCH Voice
measurements to check for missed SACCH blocks.
Change-Id: Idfdbf64c1f965f35c12559b3995e2b746c74ee9e
Related: OS#3502
Related: OS#2975
Diffstat (limited to 'include')
| -rw-r--r-- | include/osmo-bts/measurement.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/include/osmo-bts/measurement.h b/include/osmo-bts/measurement.h index b4fc35b9..a2367c83 100644 --- a/include/osmo-bts/measurement.h +++ b/include/osmo-bts/measurement.h @@ -16,6 +16,4 @@ bool ts45008_83_is_sub(struct gsm_lchan *lchan, uint32_t fn, bool is_amr_sid_upd int is_meas_complete(struct gsm_lchan *lchan, uint32_t fn); -bool is_meas_overdue(struct gsm_lchan *lchan, uint32_t *fn_missed_end, uint32_t fn); - #endif |