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bsc: Test tch allocation if sdcch exhausted 

Related: SYS#5548
Change-Id: I0c958de10a3643f8b94479d676dd1ac1b9140802
This commit is contained in:
Pau Espin 2021-07-22 15:48:16 +02:00
parent 2ebbe7c09f
commit 1447535a07
2 changed files with 121 additions and 0 deletions
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118
bsc/BSC_Tests.ttcn
View File

@ -4517,6 +4517,108 @@ testcase TC_assignment_codec_req_fr_hr() runs on test_CT {
f_shutdown_helper();
}
/* request a signalling channel with all SDCCH exhausted, it is expected that a TCH will be selected */
private function f_TC_assignment_sdcch_exhausted_req_signalling(charstring id) runs on MSC_ConnHdlr {
g_pars := f_gen_test_hdlr_pars();
g_pars.ra := '02'O; /* RA containing reason=LU */
var MobileIdentityLV mi := valueof(ts_MI_IMSI_LV(g_pars.imsi));
var PDU_ML3_MS_NW l3_info := valueof(ts_CM_SERV_REQ(CM_TYPE_MO_CALL, mi));
var octetstring l3_enc := enc_PDU_ML3_MS_NW(l3_info);
var template uint3_t tsc := ?;
f_MscConnHdlr_init(g_pars.media_nr, host_bts, host_mgw_mgcp, FR_AMR);
f_create_bssmap_exp(l3_enc);
/* call helper function for CHAN_RQD -> IMM ASS ->EST_IND */
RSL_Emulation.f_chan_est(g_pars.ra, l3_enc, g_pars.link_id, g_pars.fn, tsc);
/* we should now have a COMPL_L3 at the MSC */
timer T := 10.0;
T.start;
alt {
[] BSSAP.receive(tr_BSSMAP_ComplL3);
[] T.timeout {
Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail, "Timeout waiting for COMPLETE LAYER 3 INFORMATION");
}
}
}
testcase TC_assignment_sdcch_exhausted_req_signalling() runs on test_CT {
var MSC_ConnHdlr vc_conn;
f_init(1, true);
f_sleep(1.0);
f_disable_all_sdcch();
vc_conn := f_start_handler(refers(f_TC_assignment_sdcch_exhausted_req_signalling));
vc_conn.done;
f_enable_all_sdcch();
f_shutdown_helper();
}
/* Request a signalling channel with all SDCCH exhausted, it is
expected that no TCH will be selected for signalling and assigment will fail
because it's dictated by VTY config */
testcase TC_assignment_sdcch_exhausted_req_signalling_tch_forbidden() runs on test_CT {
var RSL_Message rsl_unused, rsl_msg;
var GsmRrMessage rr;
f_init(1, false);
f_sleep(1.0);
f_vty_allow_tch_for_signalling(false, 0);
f_disable_all_sdcch();
/* RA containing reason=LU */
f_ipa_tx(0, ts_RSL_CHAN_RQD('02'O, 2342));
rsl_msg := f_exp_ipa_rx(0, tr_RSL_IMM_ASSIGN(0));
rr := dec_GsmRrMessage(rsl_msg.ies[1].body.full_imm_ass_info.payload);
if (rr.header.message_type != IMMEDIATE_ASSIGNMENT_REJECT) {
setverdict(fail, "Expected reject");
}
f_vty_allow_tch_for_signalling(true, 0);
f_enable_all_sdcch();
f_shutdown_helper();
}
/* Request a voice channel with all SDCCH exhausted, it is
* expected that TCH channel will be allocated since the VTY option is only
* aimed at signalling requests */
private function f_TC_assignment_sdcch_exhausted_req_voice_tch_forbidden(charstring id) runs on MSC_ConnHdlr {
g_pars := f_gen_test_hdlr_pars();
g_pars.ra := '43'O; /* RA containing reason=originating speech call*/
var MobileIdentityLV mi := valueof(ts_MI_IMSI_LV(g_pars.imsi));
var PDU_ML3_MS_NW l3_info := valueof(ts_CM_SERV_REQ(CM_TYPE_MO_CALL, mi));
var octetstring l3_enc := enc_PDU_ML3_MS_NW(l3_info);
var template uint3_t tsc := ?;
f_MscConnHdlr_init(g_pars.media_nr, host_bts, host_mgw_mgcp, FR_AMR);
f_create_bssmap_exp(l3_enc);
/* call helper function for CHAN_RQD -> IMM ASS ->EST_IND */
RSL_Emulation.f_chan_est(g_pars.ra, l3_enc, g_pars.link_id, g_pars.fn, tsc);
/* we should now have a COMPL_L3 at the MSC */
timer T := 10.0;
T.start;
alt {
[] BSSAP.receive(tr_BSSMAP_ComplL3);
[] T.timeout {
Misc_Helpers.f_shutdown(__BFILE__, __LINE__, fail, "Timeout waiting for COMPLETE LAYER 3 INFORMATION");
}
}
}
testcase TC_assignment_sdcch_exhausted_req_voice_tch_forbidden() runs on test_CT {
var MSC_ConnHdlr vc_conn;
f_init(1, true);
f_sleep(1.0);
f_vty_allow_tch_for_signalling(false, 0);
f_disable_all_sdcch();
vc_conn := f_start_handler(refers(f_TC_assignment_sdcch_exhausted_req_voice_tch_forbidden));
vc_conn.done;
f_vty_allow_tch_for_signalling(true, 0);
f_enable_all_sdcch();
f_shutdown_helper();
}
testcase TC_assignment_osmux() runs on test_CT {
var TestHdlrParams pars := f_gen_test_hdlr_pars();
var MSC_ConnHdlr vc_conn;
@ -7829,6 +7931,19 @@ private function f_vty_allow_srvcc_fast_return(boolean allow, integer bts_nr) ru
f_vty_transceive(BSCVTY, "exit");
}
/* Allow/Forbid TCH for signalling if SDCCH exhausted on a given BTS via VTY */
private function f_vty_allow_tch_for_signalling(boolean allow, integer bts_nr) runs on test_CT {
f_vty_enter_cfg_bts(BSCVTY, bts_nr);
if (allow) {
f_vty_transceive(BSCVTY, "channel allocator allow-tch-for-signalling 1");
} else {
f_vty_transceive(BSCVTY, "channel allocator allow-tch-for-signalling 0");
}
f_vty_transceive(BSCVTY, "exit");
f_vty_transceive(BSCVTY, "exit");
f_vty_transceive(BSCVTY, "exit");
}
/* Begin assignmet procedure and send an EMERGENCY SETUP (RR) */
private function f_assignment_emerg_setup() runs on MSC_ConnHdlr {
var PDU_ML3_MS_NW emerg_setup;
@ -9408,6 +9523,9 @@ control {
execute( TC_assignment_codec_hr_exhausted_req_fr_hr() );
execute( TC_assignment_codec_req_hr_fr() );
execute( TC_assignment_codec_req_fr_hr() );
execute( TC_assignment_sdcch_exhausted_req_signalling() );
execute( TC_assignment_sdcch_exhausted_req_signalling_tch_forbidden() );
execute( TC_assignment_sdcch_exhausted_req_voice_tch_forbidden() );
execute( TC_assignment_osmux() );

3
bsc/expected-results.xml
View File

@ -96,6 +96,9 @@
<testcase classname='BSC_Tests' name='TC_assignment_codec_hr_exhausted_req_fr_hr' time='MASKED'/>
<testcase classname='BSC_Tests' name='TC_assignment_codec_req_hr_fr' time='MASKED'/>
<testcase classname='BSC_Tests' name='TC_assignment_codec_req_fr_hr' time='MASKED'/>
<testcase classname='BSC_Tests' name='TC_assignment_sdcch_exhausted_req_signalling' time='MASKED'/>
<testcase classname='BSC_Tests' name='TC_assignment_sdcch_exhausted_req_signalling_tch_forbidden' time='MASKED'/>
<testcase classname='BSC_Tests' name='TC_assignment_sdcch_exhausted_req_voice_tch_forbidden' time='MASKED'/>
<testcase classname='BSC_Tests' name='TC_assignment_osmux' time='MASKED'/>
<testcase classname='BSC_Tests' name='TC_rll_est_ind_inact_lchan' time='MASKED'/>
<testcase classname='BSC_Tests' name='TC_rll_est_ind_inval_sapi1' time='MASKED'/>