bts_pch_timer: Avoid resend Paging Request over PCUIF if T3113 is armed
Let's avoid flooding the BTS and taking CCCH resources for no good
reason. If user configures everything correctly, the SGSN should not
attempt a retry after similar timer >= T3113.
Related: OS#5297
Change-Id: I2a77714648d16ccff2a340ce775e83dcc5ffe707
diff --git a/src/gprs_bssgp_pcu.c b/src/gprs_bssgp_pcu.c
index 424a381..4328e07 100644
--- a/src/gprs_bssgp_pcu.c
+++ b/src/gprs_bssgp_pcu.c
@@ -320,6 +320,11 @@
/* FIXME: look if MS is attached a specific BTS and then only page on that one? */
llist_for_each_entry(bts, &the_pcu->bts_list, list) {
+ if (bts_pch_timer_get_by_imsi(bts, mi_imsi.imsi)) {
+ LOGP(DBSSGP, LOGL_INFO, "PS-Paging request already pending for IMSI=%s\n", mi_imsi.imsi);
+ bts_do_rate_ctr_inc(bts, CTR_PCH_REQUESTS_ALREADY);
+ continue;
+ }
if (gprs_rlcmac_paging_request(bts, &paging_mi, pgroup) < 0)
continue;
bts_pch_timer_start(bts, &paging_mi, mi_imsi.imsi);