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osmo-ttcn3-hacks
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bsc: implement initial LCS tests for OsmoBSC 

Change-Id: Id3df9439752c088cff5618d21254af42365690ca
This commit is contained in:
Neels Hofmeyr 2020-10-01 06:36:04 +02:00
parent cfe440680f
commit 2b910dc91c
2 changed files with 549 additions and 0 deletions
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546
bsc/BSC_Tests.ttcn
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@ -30,6 +30,8 @@ import from BSSAP_Types all;
import from RAN_Adapter all;
import from BSSAP_LE_Adapter all;
import from BSSAP_LE_CodecPort all;
import from BSSAP_LE_Types all;
import from BSSLAP_Types all;
import from BSSAP_CodecPort all;
import from BSSMAP_Templates all;
import from IPA_Emulation all;
@ -63,6 +65,7 @@ import from GSM_RR_Types all;
import from SCCP_Templates all;
import from BSSMAP_Templates all;
import from BSSMAP_LE_Templates all;
import from SCCPasp_Types all;
@ -6189,6 +6192,22 @@ function f_tmsi_nri(integer nri_v, octetstring base_tmsi := '42000023'O, integer
template MobileIdentityLV ts_MI_TMSI_NRI_LV(integer nri_v, integer nri_bitlen := 10) :=
ts_MI_TMSI_LV(tmsi := f_tmsi_nri(nri_v, nri_bitlen := nri_bitlen));
private function f_expect_lchan_rel(RSL_DCHAN_PT rsl) runs on MSC_ConnHdlr {
interleave {
[] rsl.receive(tr_RSL_DATA_REQ(g_chan_nr, ?, decmatch tr_RRM_RR_RELEASE)) {
f_logp(BSCVTY, "Got RSL RR Release");
}
[] rsl.receive(tr_RSL_DEACT_SACCH(g_chan_nr)) {
f_logp(BSCVTY, "Got RSL Deact SACCH");
}
[] rsl.receive(tr_RSL_MsgTypeD(RSL_MT_RF_CHAN_REL)) {
f_logp(BSCVTY, "Got RSL RF Chan Rel, sending Rel Ack");
rsl.send(ts_RSL_RF_CHAN_REL_ACK(g_chan_nr));
break;
}
}
}
private function f_perform_clear(RSL_DCHAN_PT rsl) runs on MSC_ConnHdlr {
f_logp(BSCVTY, "MSC instructs BSC to clear channel");
BSSAP.send(ts_BSSMAP_ClearCommand(0));
@ -7594,6 +7613,521 @@ testcase TC_fh_params_si4_cbch() runs on test_CT {
f_shutdown_helper();
}
template (value) PDU_BSSAP_LE ts_BSSMAP_LE_BSSLAP(template (value) BSSLAP_PDU bsslap)
:= ts_BSSMAP_LE_ConnInfo(BSSMAP_LE_PROT_BSSLAP, data := enc_BSSLAP_PDU(valueof(bsslap)));
private function f_match_bsslap(PDU_BSSAP_LE got_bsslap_msg,
template (present) BSSLAP_PDU expect_bsslap)
{
var BSSLAP_PDU bsslap := dec_BSSLAP_PDU(got_bsslap_msg.pdu.bssmap.co_info.bsslap_apdu.data);
if (not match(bsslap, expect_bsslap)) {
log("EXPECTING BSSLAP: ", expect_bsslap);
log("GOT BSSLAP: ", bsslap);
setverdict(fail, "BSSLAP is not as expected");
mtc.stop;
}
setverdict(pass);
}
/* GAD: this is an Ellipsoid point with uncertainty circle, encoded as in 3GPP TS 23.032 §7.3.2. */
const octetstring gad_ell_point_unc_circle := '10b0646d0d5f6627'O;
private function f_expect_bsslap(template (present) BSSLAP_PDU expect_rx_bsslap) runs on MSC_ConnHdlr {
var PDU_BSSAP_LE rx_bsslap;
BSSAP_LE.receive(tr_BSSMAP_LE_ConnInfo(BSSMAP_LE_PROT_BSSLAP, ?)) -> value(rx_bsslap);
f_match_bsslap(rx_bsslap, expect_rx_bsslap);
}
/* With an active lchan, start BSSMAP Perform Location Request on A interface, starting BSSMAP-LE Perform Location
* Request on Lb interface. Either with or without the SMLC doing a BSSLAP TA Request. */
private function f_lcs_loc_req_for_active_ms(boolean do_ta_request := false) runs on MSC_ConnHdlr {
f_sleep(1.0);
f_establish_fully(omit, omit);
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))));
var PDU_BSSAP_LE plr;
BSSAP_LE.receive(tr_BSSMAP_LE_PerfLocReq(BSSMAP_LE_LOC_INFO_CURRENT_GEOGRAPHIC_LOC, ?, ?)) -> value(plr);
if (not do_ta_request) {
/* verify TA Layer 3 in APDU. First the APDU type (BSSLAP), then the BSSLAP data contents. */
var template BSSMAP_LE_IE_APDU expect_apdu := tr_BSSMAP_LE_APDU(BSSMAP_LE_PROT_BSSLAP, ?);
if (not match(plr.pdu.bssmap.perf_loc_req.bsslap_apdu, expect_apdu)) {
log("EXPECTING BSSMAP-LE APDU IE ", expect_apdu);
log("GOT BSSMAP-LE APDU IE ", plr.pdu.bssmap.perf_loc_req.bsslap_apdu);
setverdict(fail, "BSSMAP-LE APDU IE is not as expected");
mtc.stop;
}
var template BSSLAP_PDU expect_ta_layer3 := tr_BSSLAP_TA_Layer3(tr_BSSLAP_IE_TA(0));
var BSSLAP_PDU bsslap := dec_BSSLAP_PDU(plr.pdu.bssmap.perf_loc_req.bsslap_apdu.data);
if (not match(bsslap, expect_ta_layer3)) {
log("EXPECTING BSSLAP TA Layer 3: ", expect_ta_layer3);
log("GOT BSSLAP: ", bsslap);
setverdict(fail, "BSSLAP is not as expected");
mtc.stop;
}
/* OsmoBSC directly sent the TA as BSSLAP APDU in the BSSMAP-LE Perform Location Request to the SMLC. The SMLC
* has no need to request the TA from the BSC and directly responds. */
} else {
/* SMLC wants to ask the TA from the BSC explicitly in a BSSLAP TA Request message */
BSSAP_LE.send(ts_BSSMAP_LE_BSSLAP(ts_BSSLAP_TA_Req));
f_expect_bsslap(tr_BSSLAP_TA_Resp(?, ?));
}
/* SMLC got the TA from the BSC, now responds with geo information data. */
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)));
/* The LCS was using an active A-interface conn. It should still remain active after this. */
f_mo_l3_transceive();
f_perform_clear(RSL);
f_sleep(2.0);
setverdict(pass);
}
/* With an active lchan, start BSSMAP Perform Location Request on A interface, starting BSSMAP-LE Perform Location
* Request on Lb interface. Without the SMLC doing a BSSLAP TA Request. */
private function f_tc_lcs_loc_req_for_active_ms(charstring id) runs on MSC_ConnHdlr {
f_lcs_loc_req_for_active_ms(false);
}
testcase TC_lcs_loc_req_for_active_ms() 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);
vc_conn := f_start_handler(refers(f_tc_lcs_loc_req_for_active_ms), pars);
vc_conn.done;
}
/* With an active lchan, start BSSMAP Perform Location Request on A interface, starting BSSMAP-LE Perform Location
* Request on Lb interface. With the SMLC doing a BSSLAP TA Request. */
private function f_tc_lcs_loc_req_for_active_ms_ta_req(charstring id) runs on MSC_ConnHdlr {
f_lcs_loc_req_for_active_ms(true);
}
testcase TC_lcs_loc_req_for_active_ms_ta_req() 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);
vc_conn := f_start_handler(refers(f_tc_lcs_loc_req_for_active_ms_ta_req), pars);
vc_conn.done;
}
/* Clear the A-interface conn only, without doing anything on Abis. Useful for LCS, for cases where there is only an A
* conn without an active lchan. */
private function f_clear_A_conn() runs on MSC_ConnHdlr
{
var BssmapCause cause := 0;
BSSAP.send(ts_BSSMAP_ClearCommand(cause));
BSSAP.receive(tr_BSSMAP_ClearComplete);
BSSAP.send(RAN_Conn_Prim:MSC_CONN_PRIM_DISC_REQ);
timer no_more_bssap := 5.0;
no_more_bssap.start;
alt {
[] no_more_bssap.timeout { break; }
[] BSSAP.receive(tr_BSSAP_BSSMAP) {
setverdict(fail, "Expected no more BSSAP after Clear Complete");
mtc.stop;
}
}
setverdict(pass);
}
/* Verify that the A-interface connection is still working, and then clear it, without doing anything on Abis. Useful
* for LCS, for cases where there is only an A conn without an active lchan. */
private function f_verify_active_A_conn_and_clear() runs on MSC_ConnHdlr
{
f_logp(BSCVTY, "f_verify_active_A_conn_and_clear: test A link, then clear");
/* When an lchan is active, we can send some L3 data from the BTS side and verify that it shows up on the other
* side towards the MSC. When there is no lchan, this is not possible. To probe whether the A-interface
* connection is still up, we need something that echos back on the A-interface. Another LCS request! */
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, ?, ?));
/* Right, the Perform Location Request showed up on Lb, now we can clear the A conn. */
f_clear_A_conn();
BSSAP_LE.receive(tr_BSSMAP_LE_PerfLocAbort(BSSMAP_LE_LCS_CAUSE_REQUEST_ABORTED));
BSSAP_LE.receive(BSSAP_LE_Conn_Prim:CONN_PRIM_DISC_IND);
}
/* With *no* active lchan, start BSSMAP Perform Location Request on A interface, starting BSSMAP-LE Perform Location
* Request on Lb interface. BSC will Page for the subscriber as soon as we (virtual SMLC) request the TA via BSSLAP.
*/
private function f_tc_lcs_loc_req_for_idle_ms(charstring id) runs on MSC_ConnHdlr {
f_sleep(1.0);
f_MscConnHdlr_init(g_pars.media_nr, "127.0.0.2", "127.0.0.3", FR_AMR);
f_bssap_le_register_imsi(g_pars.imsi, omit);
/* Register to receive the Paging Command */
var RslChannelNr new_chan_nr := valueof(t_RslChanNr0(1, RSL_CHAN_NR_Bm_ACCH));
g_chan_nr := new_chan_nr;
f_rslem_register(0, g_chan_nr);
BSSAP.send(ts_BSSAP_Conn_Req(g_pars.sccp_addr_bsc, g_pars.sccp_addr_msc,
valueof(ts_BSSMAP_Perform_Location_Request(ts_BSSMAP_Imsi(g_pars.imsi),
ts_CellId_CGI('001'H, '01'H, 1, 0)))));
BSSAP.receive(RAN_Conn_Prim:MSC_CONN_PRIM_CONF_IND);
var PDU_BSSAP_LE plr;
BSSAP_LE.receive(tr_BSSMAP_LE_PerfLocReq(BSSMAP_LE_LOC_INFO_CURRENT_GEOGRAPHIC_LOC, ?, ?)) -> value(plr);
/* SMLC wants to ask the TA from the BSC explicitly in a BSSLAP TA Request message */
BSSAP_LE.send(ts_BSSMAP_LE_BSSLAP(ts_BSSLAP_TA_Req));
/* OsmoBSC needs to Page */
RSL.receive(tr_RSL_PAGING_CMD(tr_MI_IMSI(g_pars.imsi)));
f_logp(BSCVTY, "got Paging Command");
/* MS requests channel. Since the Paging was for LCS, the Paging Response does not trigger a Complete Layer 3 to
* the MSC, and releases the lchan directly. */
f_perform_compl_l3(RSL, ts_PAG_RESP(valueof(ts_MI_IMSI_LV(g_pars.imsi))), do_clear := false, expect_bssmap_l3 := false);
f_expect_lchan_rel(RSL);
/* From the Paging Response, the TA is now known to the BSC, and it responds to the SMLC. */
f_expect_bsslap(tr_BSSLAP_TA_Resp(?, ?));
/* SMLC got the TA from the BSC, now responds with geo information data. */
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)));
/* The lchan is gone, the A-interface conn was created for the LCS only.
* Still it is clearly the MSC's job to decide whether to tear down the conn or not. */
f_verify_active_A_conn_and_clear();
f_sleep(2.0);
setverdict(pass);
}
testcase TC_lcs_loc_req_for_idle_ms() 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);
pars.sccp_addr_msc := g_bssap[0].sccp_addr_own;
pars.sccp_addr_bsc := g_bssap[0].sccp_addr_peer;
vc_conn := f_start_handler(refers(f_tc_lcs_loc_req_for_idle_ms), pars);
vc_conn.done;
}
/* With no active lchan, start BSSMAP Perform Location Request on A interface, but omit IMSI; expect failure response.
*/
private function f_tc_lcs_loc_req_no_subscriber(charstring id) runs on MSC_ConnHdlr {
f_sleep(1.0);
f_MscConnHdlr_init(g_pars.media_nr, "127.0.0.2", "127.0.0.3", FR_AMR);
f_bssap_le_register_imsi(g_pars.imsi, omit);
/* provoke an abort by omitting both IMSI and IMEI */
BSSAP.send(ts_BSSAP_Conn_Req(g_pars.sccp_addr_bsc, g_pars.sccp_addr_msc,
valueof(ts_BSSMAP_Perform_Location_Request(omit,
ts_CellId_CGI('262'H, '42'H, 23, 42)))));
BSSAP.receive(RAN_Conn_Prim:MSC_CONN_PRIM_CONF_IND);
/* BSC tells MSC about failure */
BSSAP.receive(tr_BSSMAP_Perform_Location_Response(
locationEstimate := omit, positioningData := omit,
lCS_Cause := tr_BSSMAP_LcsCause(BSSMAP_LCS_CAUSE_DATA_MISSING_IN_REQ)));
/* There is no lchan. Still the MSC's job to decide whether to tear down the conn or not. */
f_verify_active_A_conn_and_clear();
f_sleep(2.0);
setverdict(pass);
}
testcase TC_lcs_loc_req_no_subscriber() 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);
pars.sccp_addr_msc := g_bssap[0].sccp_addr_own;
pars.sccp_addr_bsc := g_bssap[0].sccp_addr_peer;
vc_conn := f_start_handler(refers(f_tc_lcs_loc_req_no_subscriber), pars);
vc_conn.done;
}
/* With an active lchan, start a Perform Location Request on the A-interface, but virtual SMLC does not answer with
* BSSMAP-LE Perform Location Response (before or after sending a BSSLAP TA Request) */
private function f_lcs_loc_req_for_active_ms_le_timeout(boolean do_ta) runs on MSC_ConnHdlr {
f_sleep(1.0);
f_establish_fully(omit, omit);
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))));
var PDU_BSSAP_LE plr;
BSSAP_LE.receive(tr_BSSMAP_LE_PerfLocReq(BSSMAP_LE_LOC_INFO_CURRENT_GEOGRAPHIC_LOC, ?, ?)) -> value(plr);
if (do_ta) {
/* SMLC wants to ask the TA from the BSC explicitly in a BSSLAP TA Request message */
BSSAP_LE.send(ts_BSSMAP_LE_BSSLAP(ts_BSSLAP_TA_Req));
f_expect_bsslap(tr_BSSLAP_TA_Resp(?, ?));
}
/* SMLC fails to respond, BSC runs into timeout */
BSSAP_LE.receive(tr_BSSMAP_LE_PerfLocAbort(BSSMAP_LE_LCS_CAUSE_SYSTEM_FAILURE));
BSSAP_LE.receive(BSSAP_LE_Conn_Prim:CONN_PRIM_DISC_IND);
BSSAP.receive(tr_BSSMAP_Perform_Location_Response(
locationEstimate := omit, positioningData := omit,
lCS_Cause := tr_BSSMAP_LcsCause(BSSMAP_LCS_CAUSE_SYSTEM_FAILURE)));
/* There is no lchan. Still the MSC's job to decide whether to tear down the conn or not. */
f_verify_active_A_conn_and_clear();
f_sleep(2.0);
setverdict(pass);
}
/* With an active lchan, start a Perform Location Request on the A-interface, but virtual SMLC does not answer with
* BSSMAP-LE Perform Location Response, without sending a BSSLAP TA Request. */
private function f_tc_lcs_loc_req_for_active_ms_le_timeout(charstring id) runs on MSC_ConnHdlr {
f_lcs_loc_req_for_active_ms_le_timeout(false);
}
testcase TC_lcs_loc_req_for_active_ms_le_timeout() 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);
vc_conn := f_start_handler(refers(f_tc_lcs_loc_req_for_active_ms_le_timeout), pars);
vc_conn.done;
}
/* With an active lchan, start a Perform Location Request on the A-interface, but virtual SMLC does not answer with
* BSSMAP-LE Perform Location Response, after sending a BSSLAP TA Request. */
private function f_tc_lcs_loc_req_for_active_ms_le_timeout2(charstring id) runs on MSC_ConnHdlr {
f_lcs_loc_req_for_active_ms_le_timeout(true);
}
testcase TC_lcs_loc_req_for_active_ms_le_timeout2() 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);
vc_conn := f_start_handler(refers(f_tc_lcs_loc_req_for_active_ms_le_timeout2), pars);
vc_conn.done;
}
/* With *no* active lchan, start a Perform Location Request, expecting that the MS will be Paged. */
private function f_tc_lcs_loc_req_for_idle_ms_no_pag_resp(charstring id) runs on MSC_ConnHdlr {
f_sleep(1.0);
f_MscConnHdlr_init(g_pars.media_nr, "127.0.0.2", "127.0.0.3", FR_AMR);
f_bssap_le_register_imsi(g_pars.imsi, omit);
/* Register to receive the Paging Command */
var RslChannelNr new_chan_nr := valueof(t_RslChanNr0(1, RSL_CHAN_NR_Bm_ACCH));
g_chan_nr := new_chan_nr;
f_rslem_register(0, g_chan_nr);
BSSAP.send(ts_BSSAP_Conn_Req(g_pars.sccp_addr_bsc, g_pars.sccp_addr_msc,
valueof(ts_BSSMAP_Perform_Location_Request(ts_BSSMAP_Imsi(g_pars.imsi),
ts_CellId_CGI('001'H, '01'H, 1, 0)))));
BSSAP.receive(RAN_Conn_Prim:MSC_CONN_PRIM_CONF_IND);
var PDU_BSSAP_LE plr;
BSSAP_LE.receive(tr_BSSMAP_LE_PerfLocReq(BSSMAP_LE_LOC_INFO_CURRENT_GEOGRAPHIC_LOC, ?, ?)) -> value(plr);
/* SMLC wants to ask the TA from the BSC explicitly in a BSSLAP TA Request message */
BSSAP_LE.send(ts_BSSMAP_LE_BSSLAP(ts_BSSLAP_TA_Req));
/* OsmoBSC needs to Page */
var PDU_BSSAP_LE rx_bsslap;
alt {
[] RSL.receive(tr_RSL_PAGING_CMD(tr_MI_IMSI(g_pars.imsi))) {
f_logp(BSCVTY, "got Paging Command");
repeat;
}
[] BSSAP_LE.receive(tr_BSSMAP_LE_ConnInfo(BSSMAP_LE_PROT_BSSLAP, ?)) -> value(rx_bsslap) {
/* MS does not respond to Paging, TA Req runs into timeout. */
f_match_bsslap(rx_bsslap, tr_BSSLAP_Abort(?));
}
}
/* SMLC responds with failure */
BSSAP_LE.send(ts_BSSMAP_LE_PerfLocResp(omit, BSSMAP_LE_LCS_CAUSE_REQUEST_ABORTED));
BSSAP_LE.receive(BSSAP_LE_Conn_Prim:CONN_PRIM_DISC_IND);
/* BSC tells MSC about failure */
BSSAP.receive(tr_BSSMAP_Perform_Location_Response(
locationEstimate := omit, positioningData := omit,
lCS_Cause := tr_BSSMAP_LcsCause(BSSMAP_LCS_CAUSE_REQUEST_ABORTED)));
/* There is no lchan. Still the MSC's job to decide whether to tear down the conn or not. */
f_verify_active_A_conn_and_clear();
f_sleep(2.0);
setverdict(pass);
}
testcase TC_lcs_loc_req_for_idle_ms_no_pag_resp() 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);
pars.sccp_addr_msc := g_bssap[0].sccp_addr_own;
pars.sccp_addr_bsc := g_bssap[0].sccp_addr_peer;
vc_conn := f_start_handler(refers(f_tc_lcs_loc_req_for_idle_ms_no_pag_resp), pars);
vc_conn.done;
}
/* During an ongoing Location Request, the MS sends a CM Service Request. Expect the same A-conn to be re-used / taken
* over. */
private function f_tc_cm_service_during_lcs_loc_req(charstring id) runs on MSC_ConnHdlr {
f_sleep(1.0);
f_MscConnHdlr_init(g_pars.media_nr, "127.0.0.2", "127.0.0.3", FR_AMR);
f_bssap_le_register_imsi(g_pars.imsi, omit);
/* Register to receive the Paging Command */
var RslChannelNr new_chan_nr := valueof(t_RslChanNr0(1, RSL_CHAN_NR_Bm_ACCH));
g_chan_nr := new_chan_nr;
f_rslem_register(0, g_chan_nr);
BSSAP.send(ts_BSSAP_Conn_Req(g_pars.sccp_addr_bsc, g_pars.sccp_addr_msc,
valueof(ts_BSSMAP_Perform_Location_Request(ts_BSSMAP_Imsi(g_pars.imsi),
ts_CellId_CGI('001'H, '01'H, 1, 0)))));
BSSAP.receive(RAN_Conn_Prim:MSC_CONN_PRIM_CONF_IND);
var PDU_BSSAP_LE plr;
BSSAP_LE.receive(tr_BSSMAP_LE_PerfLocReq(BSSMAP_LE_LOC_INFO_CURRENT_GEOGRAPHIC_LOC, ?, ?)) -> value(plr);
/* As the A-interface conn was established for LCS, the MS coincidentally decides to issue a CM Service Request
* and establish Layer 3. It should use the existing A-interface conn. */
f_perform_compl_l3(RSL, valueof(ts_CM_SERV_REQ(CM_TYPE_MO_CALL, valueof(ts_MI_IMSI_LV(g_pars.imsi)))),
do_clear := false, expect_bssmap_l3 := true);
/* SMLC wants to ask the TA from the BSC explicitly in a BSSLAP TA Request message */
BSSAP_LE.send(ts_BSSMAP_LE_BSSLAP(ts_BSSLAP_TA_Req));
/* OsmoBSC already has an lchan, no need to Page, just returns the TA */
f_expect_bsslap(tr_BSSLAP_TA_Resp(?, ?));
/* SMLC got the TA from the BSC, now responds with geo information data. */
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)));
/* The lchan should still exist, it was from a CM Service Request. */
f_mo_l3_transceive();
f_perform_clear(RSL);
f_sleep(2.0);
setverdict(pass);
}
testcase TC_cm_service_during_lcs_loc_req() 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);
pars.sccp_addr_msc := g_bssap[0].sccp_addr_own;
pars.sccp_addr_bsc := g_bssap[0].sccp_addr_peer;
vc_conn := f_start_handler(refers(f_tc_cm_service_during_lcs_loc_req), pars);
vc_conn.done;
}
/* During an ongoing Perform Location Request, do a Handover, an expect a BSSLAP Reset message from the BSC to indicate
* the new lchan after handover. */
private function f_tc_ho_during_lcs_loc_req(charstring id) runs on MSC_ConnHdlr {
f_sleep(1.0);
f_establish_fully(omit, omit);
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))));
var PDU_BSSAP_LE plr;
BSSAP_LE.receive(tr_BSSMAP_LE_PerfLocReq(BSSMAP_LE_LOC_INFO_CURRENT_GEOGRAPHIC_LOC, ?, ?)) -> value(plr);
/* SMLC ponders the Location Request, in the meantime the BSC decides to handover */
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;
alt {
[] as_handover(hs);
}
var PDU_BSSAP_LE rx_bsslap;
interleave {
/* Expect the BSC to inform the MSC about the handover */
[] BSSAP.receive(tr_BSSMAP_HandoverPerformed);
/* Expect the BSC to inform the SMLC about the handover */
[] BSSAP_LE.receive(tr_BSSMAP_LE_ConnInfo(BSSMAP_LE_PROT_BSSLAP, ?)) -> value(rx_bsslap) {
f_match_bsslap(rx_bsslap, tr_BSSLAP_Reset(BSSLAP_CAUSE_INTRA_BSS_HO));
}
}
/* SMLC now responds with geo information data. */
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)));
/* lchan still active */
f_mo_l3_transceive(RSL1);
/* MSC decides it is done now. */
f_perform_clear(RSL1);
f_sleep(2.0);
setverdict(pass);
}
testcase TC_ho_during_lcs_loc_req() runs on test_CT {
var MSC_ConnHdlr vc_conn;
var TestHdlrParams pars := f_gen_test_hdlr_pars();
f_init(2, true);
f_sleep(1.0);
vc_conn := f_start_handler(refers(f_tc_ho_during_lcs_loc_req), pars);
vc_conn.done;
}
/* Dyn PDCH todo:
* activate OSMO as TCH/F
* activate OSMO as TCH/H
@ -7837,6 +8371,18 @@ control {
execute( TC_fh_params_assignment_cmd() );
execute( TC_fh_params_handover_cmd() );
execute( TC_fh_params_si4_cbch() );
if (mp_enable_lcs_tests) {
execute( TC_lcs_loc_req_for_active_ms() );
execute( TC_lcs_loc_req_for_active_ms_ta_req() );
execute( TC_lcs_loc_req_for_idle_ms() );
execute( TC_lcs_loc_req_no_subscriber() );
execute( TC_lcs_loc_req_for_active_ms_le_timeout() );
execute( TC_lcs_loc_req_for_active_ms_le_timeout2() );
execute( TC_lcs_loc_req_for_idle_ms_no_pag_resp() );
execute( TC_cm_service_during_lcs_loc_req() );
execute( TC_ho_during_lcs_loc_req() );
}
}
}

3
bsc/osmo-bsc.cfg
View File

@ -40,6 +40,7 @@ log stderr
logging level lsua notice
logging level lm3ua notice
logging level lmgcp notice
logging level reset notice
!
stats interval 0
stats reporter statsd
@ -431,3 +432,5 @@ cbc
server
local-ip 127.0.0.1
local-port 48050
smlc
enable