bsc: test lchan rel during LCS Loc Req
Test this scenario:
Emergency call is started;
Location Request is started to locate the emergency;
lchan releases early for any reason;
(Do not send Clear Request immediately);
Location Request is completed, locating the emergency.
Related: SYS#5912
Related: Ib44dd05b0adee84234f671313b156ff6625357cc (osmo-bsc)
Change-Id: Idea690a4aa4aecbe4642a16e96d086cc0538564a
diff --git a/bsc/BSC_Tests.ttcn b/bsc/BSC_Tests.ttcn
index b35d316..feb8bfb 100644
--- a/bsc/BSC_Tests.ttcn
+++ b/bsc/BSC_Tests.ttcn
@@ -10301,6 +10301,120 @@
f_shutdown_helper();
}
+private altstep no_bssmap_clear_req() runs on MSC_ConnHdlr {
+ [] BSSAP.receive(tr_BSSMAP_ClearRequest) {
+ setverdict(fail, "unexpected BSSMAP Clear Request");
+ mtc.stop;
+ }
+}
+
+private type enumerated RslRel {
+ RSLREL_REL_IND,
+ RSLREL_CONN_FAIL
+};
+
+private function f_emerg_call_and_lcs_loc_req_early_lchan_release(RslRel rsl_rel) runs on MSC_ConnHdlr
+{
+ g_pars.ra := f_rnd_ra_emerg();
+ f_assignment_emerg_setup();
+
+ var PDU_BSSAP emerg_setup_data_ind_bssap;
+ timer T := 3.0;
+ T.start;
+ alt {
+ [] BSSAP.receive(tr_BSSAP_DTAP) -> value emerg_setup_data_ind_bssap {
+ var PDU_ML3_MS_NW verify_emerg_setup;
+ verify_emerg_setup := dec_PDU_ML3_MS_NW(emerg_setup_data_ind_bssap.pdu.dtap);
+ if (not ischosen(verify_emerg_setup.msgs.cc.emergencySetup)) {
+ setverdict(fail, "no emergency setup");
+ }
+ }
+ [] BSSAP.receive {
+ setverdict(fail, "unexpected BSSAP message!");
+ }
+ [] T.timeout {
+ setverdict(fail, "timeout waiting for EMERGENCY SETUP!");
+ }
+ }
+
+ /* Start a Location Request to locate the emergency */
+ f_bssap_le_register_imsi(g_pars.imsi, omit);
+ BSSAP.send(valueof(ts_BSSMAP_Perform_Location_Request(ts_BSSMAP_Imsi(g_pars.imsi),
+ ts_CellId_CGI('262'H, '42'H, 23, 42))));
+ BSSAP_LE.receive(tr_BSSMAP_LE_PerfLocReq(BSSMAP_LE_LOC_INFO_CURRENT_GEOGRAPHIC_LOC, ?, ?));
+
+ /* As long as this LCS is going on, the BSC should not send any Clear Request. Later on, it is up to the MSC to
+ * do a Clear Command when the Location Response arrives. */
+ activate(no_bssmap_clear_req());
+
+ /* the lchan gets interrupted while the Location Request has no response */
+ select (rsl_rel) {
+ case (RSLREL_REL_IND) {
+ RSL.send(ts_RSL_REL_IND(g_chan_nr, valueof(ts_RslLinkID_DCCH(0))));
+ f_expect_lchan_rel(RSL, RSL_PROC);
+ }
+ case (RSLREL_CONN_FAIL) {
+ RSL.send(ts_RSL_CONN_FAIL_IND(g_chan_nr, RSL_ERR_RADIO_LINK_FAIL));
+ }
+ case else {
+ setverdict(fail, "Unknown RslRel type");
+ mtc.stop;
+ }
+ }
+
+ /* Still expect the Location Response to find its way to the MSC. */
+ BSSAP_LE.send(ts_BSSMAP_LE_PerfLocResp(gad_ell_point_unc_circle, omit));
+ BSSAP_LE.receive(BSSAP_LE_Conn_Prim:CONN_PRIM_DISC_IND);
+ BSSAP.receive(tr_BSSMAP_Perform_Location_Response(tr_BSSMAP_IE_LocationEstimate(gad_ell_point_unc_circle)));
+
+ setverdict(pass);
+
+ select (rsl_rel) {
+ case (RSLREL_REL_IND) {
+ f_perform_clear_no_lchan();
+ }
+ case (RSLREL_CONN_FAIL) {
+ f_perform_clear();
+ }
+ }
+}
+
+private function f_tc_emerg_call_and_lcs_loc_req_early_lchan_rel_ind(charstring id) runs on MSC_ConnHdlr
+{
+ f_emerg_call_and_lcs_loc_req_early_lchan_release(RSLREL_REL_IND);
+}
+
+testcase TC_emerg_call_and_lcs_loc_req_early_lchan_rel_ind() runs on test_CT {
+ var MSC_ConnHdlr vc_conn;
+ var TestHdlrParams pars := f_gen_test_hdlr_pars();
+
+ f_init(1, true);
+ f_sleep(1.0);
+ f_vty_allow_emerg_msc(true);
+ f_vty_allow_emerg_bts(true, 0);
+ vc_conn := f_start_handler(refers(f_tc_emerg_call_and_lcs_loc_req_early_lchan_rel_ind), pars);
+ vc_conn.done;
+ f_shutdown_helper();
+}
+
+private function f_tc_emerg_call_and_lcs_loc_req_early_lchan_conn_fail(charstring id) runs on MSC_ConnHdlr
+{
+ f_emerg_call_and_lcs_loc_req_early_lchan_release(RSLREL_CONN_FAIL);
+}
+
+testcase TC_emerg_call_and_lcs_loc_req_early_lchan_conn_fail() runs on test_CT {
+ var MSC_ConnHdlr vc_conn;
+ var TestHdlrParams pars := f_gen_test_hdlr_pars();
+
+ f_init(1, true);
+ f_sleep(1.0);
+ f_vty_allow_emerg_msc(true);
+ f_vty_allow_emerg_bts(true, 0);
+ vc_conn := f_start_handler(refers(f_tc_emerg_call_and_lcs_loc_req_early_lchan_conn_fail), pars);
+ vc_conn.done;
+ f_shutdown_helper();
+}
+
/* Attempt Complete Layer 3 without any MSC available (OS#4832) */
private function f_tc_no_msc(charstring id) runs on MSC_ConnHdlr {
f_MscConnHdlr_init(g_pars.media_nr, "127.0.0.2", "127.0.0.3", FR_AMR);
@@ -11677,6 +11791,8 @@
execute( TC_cm_service_during_lcs_loc_req() );
execute( TC_ho_during_lcs_loc_req() );
execute( TC_emerg_call_and_lcs_loc_req() );
+ execute( TC_emerg_call_and_lcs_loc_req_early_lchan_rel_ind() );
+ execute( TC_emerg_call_and_lcs_loc_req_early_lchan_conn_fail() );
}
execute( TC_no_msc() );