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laforge gerrit-no-reply at lists.osmocom.orglaforge has submitted this change. ( https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/21031 )
Change subject: bsc: add TC_ho_int_radio_link_failure
......................................................................
bsc: add TC_ho_int_radio_link_failure
Change-Id: Ia94176a997dbdaf87d6b433cb24ffcfa06241d74
---
M bsc/BSC_Tests.ttcn
1 file changed, 102 insertions(+), 0 deletions(-)
Approvals:
laforge: Looks good to me, approved
Jenkins Builder: Verified
diff --git a/bsc/BSC_Tests.ttcn b/bsc/BSC_Tests.ttcn
index 8b92c99..a63d536 100644
--- a/bsc/BSC_Tests.ttcn
+++ b/bsc/BSC_Tests.ttcn
@@ -4451,6 +4451,107 @@
f_shutdown_helper();
}
+/* intra-BSC hand-over with CONNection FAILure and cause Radio Link Failure: check RR release cause */
+private function f_tc_ho_int_radio_link_failure(charstring id) runs on MSC_ConnHdlr {
+ g_pars := f_gen_test_hdlr_pars();
+ var template PDU_BSSAP exp_compl := f_gen_exp_compl();
+ var PDU_BSSAP ass_cmd := f_gen_ass_req();
+ const OCT8 kc := '0001020304050607'O;
+
+ ass_cmd.pdu.bssmap.assignmentRequest.channelType := valueof(ts_BSSMAP_IE_ChannelType);
+ ass_cmd.pdu.bssmap.assignmentRequest.codecList := valueof(ts_BSSMAP_IE_CodecList({ts_CodecFR}));
+
+ f_establish_fully(ass_cmd, exp_compl);
+ f_bts_0_cfg(BSCVTY, {"neighbor bts 1"});
+
+ var HandoverState hs := {
+ rr_ho_cmpl_seen := false,
+ handover_done := false,
+ old_chan_nr := -
+ };
+ /* issue hand-over command on VTY */
+ f_vty_handover(BSCVTY, 0, 0, g_chan_nr, 1);
+ /* temporarily suspend DChan processing on BTS1 to avoid race with RSLEM_register */
+ f_rslem_suspend(RSL1_PROC);
+
+ /* From the MGW perspective, a handover is is characterized by
+ * performing one MDCX operation with the MGW. So we expect to see
+ * one more MDCX during handover. */
+ g_media.mgcp_conn[0].mdcx_seen_exp := g_media.mgcp_conn[0].crcx_seen_exp + 1;
+
+ var RSL_Message rsl;
+ var PDU_ML3_NW_MS l3;
+ var RslChannelNr new_chan_nr;
+ var GsmArfcn arfcn;
+ RSL.receive(tr_RSL_DATA_REQ(g_chan_nr)) -> value rsl {
+ l3 := dec_PDU_ML3_NW_MS(rsl.ies[2].body.l3_info.payload);
+ if (not ischosen(l3.msgs.rrm.handoverCommand)) {
+ setverdict(fail, "Expected handoverCommand");
+ mtc.stop;
+ }
+ }
+ f_ChDesc2RslChanNr(l3.msgs.rrm.handoverCommand.channelDescription2,
+ new_chan_nr, arfcn);
+
+ f_rslem_register(0, new_chan_nr, RSL1_PROC);
+
+ /* resume processing of RSL DChan messages, which was temporarily suspended
+ * before performing a hand-over */
+ f_rslem_resume(RSL1_PROC);
+ RSL1.receive(tr_RSL_IPA_CRCX(new_chan_nr));
+
+ f_sleep(1.0);
+
+ /* Handover fails because no HANDO DET appears on the new lchan,
+ * and the old lchan reports a Radio Link Failure. */
+ RSL.send(ts_RSL_CONN_FAIL_IND(g_chan_nr, RSL_ERR_RADIO_LINK_FAIL));
+
+ var PDU_BSSAP rx_clear_request;
+ BSSAP.receive(tr_BSSMAP_ClearRequest) -> value rx_clear_request;
+ var BssmapCause cause := bit2int(rx_clear_request.pdu.bssmap.clearRequest.cause.causeValue);
+ BSSAP.send(ts_BSSMAP_ClearCommand(cause));
+
+ var RR_Cause rr_cause := GSM48_RR_CAUSE_ABNORMAL_UNSPEC;
+
+ var MgcpCommand mgcp;
+ interleave {
+ [] RSL.receive(tr_RSL_DATA_REQ(g_chan_nr, ?, decmatch tr_RRM_RR_RELEASE(int2oct(enum2int(rr_cause), 1)))) {}
+ [] RSL.receive(tr_RSL_DEACT_SACCH(g_chan_nr)) {}
+ [] RSL.receive(tr_RSL_MsgTypeD(RSL_MT_RF_CHAN_REL)) {
+ RSL.send(ts_RSL_RF_CHAN_REL_ACK(g_chan_nr));
+ }
+ [] RSL1.receive(tr_RSL_DEACT_SACCH(new_chan_nr)) {}
+ [] RSL1.receive(tr_RSL_MsgTypeD(RSL_MT_RF_CHAN_REL)) {
+ RSL1.send(ts_RSL_RF_CHAN_REL_ACK(new_chan_nr));
+ }
+ [] BSSAP.receive(tr_BSSMAP_ClearComplete) {}
+ }
+
+ f_sleep(0.5);
+ setverdict(pass);
+}
+testcase TC_ho_int_radio_link_failure() runs on test_CT {
+ var MSC_ConnHdlr vc_conn;
+ f_init(2, true);
+ f_sleep(1.0);
+
+ f_ctrs_bsc_and_bts_init();
+
+ vc_conn := f_start_handler(refers(f_tc_ho_int_radio_link_failure));
+ vc_conn.done;
+
+ /* from f_establish_fully() */
+ f_ctrs_bsc_and_bts_add(0, "assignment:attempted");
+ f_ctrs_bsc_and_bts_add(0, "assignment:completed");
+ /* from handover */
+ f_ctrs_bsc_and_bts_add(0, "handover:attempted");
+ f_ctrs_bsc_and_bts_add(0, "handover:stopped");
+ f_ctrs_bsc_and_bts_add(0, "intra_bsc_ho:attempted");
+ f_ctrs_bsc_and_bts_add(0, "intra_bsc_ho:stopped");
+ f_ctrs_bsc_and_bts_verify();
+ f_shutdown_helper();
+}
+
/* Expecting MGCP to DLCX the endpoint's two connections: towards BTS and towards MSC */
private function f_expect_dlcx_conns() runs on MSC_ConnHdlr {
var MgcpCommand mgcp;
@@ -8344,6 +8445,7 @@
execute( TC_err_84_unknown_msg() );
execute( TC_ho_int() );
+ execute( TC_ho_int_radio_link_failure() );
execute( TC_ho_out_of_this_bsc() );
execute( TC_ho_out_fail_no_msc_response() );
--
To view, visit https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/21031
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Gerrit-Project: osmo-ttcn3-hacks
Gerrit-Branch: master
Gerrit-Change-Id: Ia94176a997dbdaf87d6b433cb24ffcfa06241d74
Gerrit-Change-Number: 21031
Gerrit-PatchSet: 3
Gerrit-Owner: neels <nhofmeyr at sysmocom.de>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: laforge <laforge at osmocom.org>
Gerrit-CC: pespin <pespin at sysmocom.de>
Gerrit-MessageType: merged
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