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Fix SACCH channel release indication not sent to BSC after location update. 

Based on GSM 04.08 3.4.13 RR connection release procedure, after the network
sends a deactivate SACCH it receives DISC from MS which cause BTS to
send RLL release indication to BSC in order to stop T3109 timer. It has been
found that after a location update BSC never receives RLL release indication
which causes a T3109 timeout because no TCH is currently allocated. This fix
ensures RLL release indication to be sent to BSC when no TCH is allocated
in the particular case of a location update.

Change-Id: Ibe2a365641eb8c9a7f0a462b7393ec3fd28cc366
This commit is contained in:
Jean-Francois Dionne 2017-02-03 14:52:15 -05:00
parent 1beb9bcbe0
commit eb4a3392e1
1 changed files with 2 additions and 1 deletions
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3
src/common/rsl.c
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@ -2284,7 +2284,8 @@ int lapdm_rll_tx_cb(struct msgb *msg, struct lapdm_entity *le, void *ctx)
gsm_lchan_name(lchan), rsl_msg_name(rh->msg_type));
/* REL_IND handling */
if (rh->msg_type == RSL_MT_REL_IND) {
if (rh->msg_type == RSL_MT_REL_IND &&
(lchan->type == GSM_LCHAN_TCH_F || lchan->type == GSM_LCHAN_TCH_H)) {
LOGP(DRSL, LOGL_INFO, "%s Scheduling %s to L3 in next associated TCH-RTS.ind\n",
gsm_lchan_name(lchan),
rsl_msg_name(rh->msg_type));