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osmo-bts-trx/scheduler: fix comments related to FACCH/H and BFI 

Change-Id: I1c1d81ba5a54946089da6c32b0d42141ffe71ed8
Related: OS#4799
This commit is contained in:
Vadim Yanitskiy 2020-10-30 16:44:55 +07:00
parent 07aa8927e1
commit 850607295c
1 changed files with 5 additions and 3 deletions
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8
src/osmo-bts-trx/sched_lchan_tchh.c
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@ -119,11 +119,13 @@ int rx_tchh_fn(struct l1sched_trx *l1t, enum trx_chan_type chan,
}
*mask = 0x0;
/* skip second of two TCH frames of FACCH was received */
/* skip decoding of the last 4 bursts of FACCH/H */
if (chan_state->ul_ongoing_facch) {
chan_state->ul_ongoing_facch = 0;
memcpy(*bursts_p, *bursts_p + 232, 232);
memcpy(*bursts_p + 232, *bursts_p + 464, 232);
/* we have already sent the first BFI when a FACCH/H frame
* was decoded (see below), now send the second one. */
ber10k = 0;
memset(&meas_avg, 0, sizeof(meas_avg));
goto bfi;
@ -266,8 +268,8 @@ int rx_tchh_fn(struct l1sched_trx *l1t, enum trx_chan_type chan,
meas_avg.ci_cb, ber10k,
PRES_INFO_UNKNOWN);
bfi:
/* FIXME: a FACCH/H frame replaces two speech frames,
* so we actually need to send two bad frame indications! */
/* A FACCH/H frame replaces two speech frames, so we need to send two BFIs.
* One is sent here, another will be sent two bursts later (see above). */
if (rsl_cmode == RSL_CMOD_SPD_SPEECH) {
/* indicate bad frame */
if (lchan->tch.dtx.ul_sid) {