Neels Hofmeyr has uploaded this change for review. (
https://gerrit.osmocom.org/9674
Change subject: bsc: inter-BSC HO: add TC_ho_out_of_this_bsc,
TC_ho_into_this_bsc
......................................................................
bsc: inter-BSC HO: add TC_ho_out_of_this_bsc, TC_ho_into_this_bsc
Change-Id: Id22852d4be7f127d827e7a8beeec55db27c07f03
---
M bsc/BSC_Tests.ttcn
M bsc/osmo-bsc.cfg
2 files changed, 330 insertions(+), 36 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks
refs/changes/74/9674/1
diff --git a/bsc/BSC_Tests.ttcn b/bsc/BSC_Tests.ttcn
index 0107091..ca7b275 100644
--- a/bsc/BSC_Tests.ttcn
+++ b/bsc/BSC_Tests.ttcn
@@ -33,6 +33,8 @@
import from RSL_Types all;
import from RSL_Emulation all;
import from MGCP_Emulation all;
+import from MGCP_Templates all;
+import from MGCP_Types all;
import from Osmocom_CTRL_Functions all;
import from Osmocom_CTRL_Types all;
@@ -43,6 +45,7 @@
import from MobileL3_CommonIE_Types all;
import from MobileL3_Types all;
+import from MobileL3_RRM_Types all;
import from L3_Templates all;
import from GSM_RR_Types all;
@@ -2067,41 +2070,6 @@
f_vty_ss_action("handover " & int2str(new_bts_nr), bts_nr, trx_nr,
chan_nr);
}
-/* intra-BSC hand-over between BTS0 and BTS1 */
-private function f_tc_ho_int(charstring id) runs on MSC_ConnHdlr {
- g_pars := valueof(t_def_TestHdlrPars);
- 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);
-
- var HandoverState hs := {
- rr_ho_cmpl_seen := false,
- handover_done := false,
- old_chan_nr := -
- };
- /* issue hand-over command on VTY */
- f_vty_handover(0, 0, g_chan_nr, 1);
- /* temporarily suspend DChan processing on BTS1 to avoid race with
RSLEM_register */
- f_rslem_suspend(RSL1_PROC);
- alt {
- [] as_handover(hs);
- /* FIXME: somehow determine that the hand-over has completed, by MGCP
MDCX? */
- }
-}
-
-testcase TC_ho_int() runs on test_CT {
- var MSC_ConnHdlr vc_conn;
- f_init(2, true);
- f_sleep(1.0);
- vc_conn := f_start_handler(refers(f_tc_ho_int));
- vc_conn.done;
-}
-
/* OS#3041: Open and close N connections in a normal fashion, and expect no
* BSSMAP Reset just because of that. */
testcase TC_bssap_rlsd_does_not_cause_bssmap_reset() runs on test_CT {
@@ -2481,6 +2449,327 @@
* is the info correct on delayed PCU (re)connect?
*/
+
+/***********************************************************************
+ * Handover
+ ***********************************************************************/
+
+/* intra-BSC hand-over between BTS0 and BTS1 */
+private function f_tc_ho_int(charstring id) runs on MSC_ConnHdlr {
+ g_pars := valueof(t_def_TestHdlrPars);
+ 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);
+
+ var HandoverState hs := {
+ rr_ho_cmpl_seen := false,
+ handover_done := false,
+ old_chan_nr := -
+ };
+ /* issue hand-over command on VTY */
+ f_vty_handover(0, 0, g_chan_nr, 1);
+ /* temporarily suspend DChan processing on BTS1 to avoid race with
RSLEM_register */
+ f_rslem_suspend(RSL1_PROC);
+ alt {
+ [] as_handover(hs);
+ /* FIXME: somehow determine that the hand-over has completed, by MGCP
MDCX? */
+ }
+}
+
+testcase TC_ho_int() runs on test_CT {
+ var MSC_ConnHdlr vc_conn;
+ f_init(2, true);
+ f_sleep(1.0);
+ vc_conn := f_start_handler(refers(f_tc_ho_int));
+ vc_conn.done;
+}
+
+template PDU_BSSAP tr_BSSMAP_HandoverRequired modifies tr_BSSAP_BSSMAP := {
+ pdu := {
+ bssmap := {
+ handoverRequired := {
+ messageType := '11'O
+ }
+ }
+ }
+}
+
+template PDU_BSSAP ts_BSSMAP_HandoverCommand(octetstring layer3info) modifies
ts_BSSAP_BSSMAP := {
+ pdu := {
+ bssmap := {
+ handoverCommand := {
+ messageType := '13'O,
+ layer3Information := {
+ elementIdentifier := '17'O,
+ lengthIndicator := 0,
+ layer3info := layer3info
+ },
+ cellIdentifier := omit,
+ newBSSToOldBSSInfo := omit,
+ talkerPriority := omit
+ }
+ }
+ }
+}
+
+template PDU_ML3_NW_MS ts_RR_HandoverCommand := {
+ discriminator := '0110'B,
+ tiOrSkip := {
+ skipIndicator := '0000'B
+ },
+ msgs := {
+ rrm := {
+ handoverCommand := {
+ messageType := '00101011'B,
+ cellDescription := {
+ bcc := '001'B,
+ ncc := '010'B,
+ BCCHArfcn_HighPart := '11'B,
+ BCCHArfcn_LowPart := '04'O
+ },
+ channelDescription2 := {
+ timeslotNumber := '110'B,
+ channelTypeandTDMAOffset := '00001'B,
+ octet3 := '00'O,
+ octet4 := '09'O
+ },
+ handoverReference := {
+ handoverReferenceValue := '00'O
+ },
+ powerCommandAndAccesstype := {
+ powerlevel := '00000'B,
+ fPC_EP := '0'B,
+ ePC_Mode := '0'B,
+ aTC := '0'B
+ },
+ synchronizationIndication := omit,
+ frequencyShortListAfterTime := omit,
+ frequencyListAfterTime := omit,
+ cellChannelDescription := omit,
+ multislotAllocation := omit,
+ modeOfChannelSet1 := omit,
+ modeOfChannelSet2 := omit,
+ modeOfChannelSet3 := omit,
+ modeOfChannelSet4 := omit,
+ modeOfChannelSet5 := omit,
+ modeOfChannelSet6 := omit,
+ modeOfChannelSet7 := omit,
+ modeOfChannelSet8 := omit,
+ descrOf2ndCh_at := omit,
+ modeOf2ndChannel := omit,
+ frequencyChannelSequence_at := omit,
+ mobileAllocation_at := omit,
+ startingTime := omit,
+ timeDifference := omit,
+ timingAdvance := omit,
+ frequencyShortListBeforeTime := omit,
+ frequencyListBeforeTime := omit,
+ descrOf1stCh_bt := omit,
+ descrOf2ndCh_bt := omit,
+ frequencyChannelSequence_bt := omit,
+ mobileAllocation_bt := omit,
+ cipherModeSetting := omit,
+ vGCS_TargetModeIndication := omit,
+ multiRateConfiguration := omit,
+ dynamicARFCN_Mapping := omit,
+ vGCS_Ciphering_Parameters := omit,
+ dedicatedServiceInformation := omit,
+ pLMNIndex := omit,
+ extendedTSCSet_afterTime := omit,
+ extendedTSCSet_beforeTime := omit
+ }
+ }
+ }
+}
+
+private function f_tc_ho_out_of_this_bsc(charstring id) runs on MSC_ConnHdlr {
+ g_pars := valueof(t_def_TestHdlrPars);
+ var template PDU_BSSAP exp_compl := tr_BSSMAP_AssignmentComplete(omit,
?);
+ var BSSMAP_IE_AoIP_TransportLayerAddress tla :=
valueof(ts_BSSMAP_IE_AoIP_TLA4('01020304'O, 2342));
+ var PDU_BSSAP ass_cmd := valueof(ts_BSSMAP_AssignmentReq(omit, tla));
+ var PDU_ML3_NW_MS rr_ho_cmd;
+ var octetstring rr_ho_cmd_enc;
+ var myBSSMAP_Cause cause_val := GSM0808_CAUSE_HANDOVER_SUCCESSFUL;
+ var BssmapCause cause := enum2int(cause_val);
+ var RSL_Message rsl_ho_cmd;
+ var RSL_IE_Body rsl_ho_cmd_l3;
+ var MgcpCommand mgcp;
+
+ 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_vty_transceive(BSCVTY, "handover any to arfcn 123 bsic any");
+
+ BSSAP.receive(tr_BSSMAP_HandoverRequired);
+
+ f_sleep(0.5);
+ /* The MSC negotiates Handover Request and Handover Request Ack with
+ * the other BSS and comes back with a BSSMAP Handover Command
+ * containing an RR Handover Command coming from the target BSS... */
+
+ rr_ho_cmd := valueof(ts_RR_HandoverCommand);
+ log("Remote cell's RR Handover Command passed through as L3 Info: ",
rr_ho_cmd);
+ rr_ho_cmd_enc := enc_PDU_ML3_NW_MS(rr_ho_cmd);
+ log("Remote cell's RR Handover Command passed through as L3 Info,
encoded: ", rr_ho_cmd_enc);
+ BSSAP.send(ts_BSSMAP_HandoverCommand(rr_ho_cmd_enc));
+
+ /* expect the Handover Command to go out on RR */
+ RSL.receive(tr_RSL_DATA_REQ(g_chan_nr, ?, ?)) -> value rsl_ho_cmd;
+ log("RSL Data Req went out to first BTS: ", rsl_ho_cmd);
+ if (not f_rsl_find_ie(rsl_ho_cmd, RSL_IE_L3_INFO, rsl_ho_cmd_l3)) {
+ log("RSL message contains no L3 Info IE, expected RR Handover
Command");
+ setverdict(fail);
+ } else {
+ log("Found L3 Info: ", rsl_ho_cmd_l3);
+ if (rsl_ho_cmd_l3.l3_info.payload != rr_ho_cmd_enc) {
+ log("FAIL: the BSC sent out a different L3 Info, not
matching the RR Handover Command the other BSS forwarded.");
+ setverdict(fail);
+ } else {
+ log("Success: the BSC sent out the same RR Handover
Command the other BSS forwarded.");
+ setverdict(pass);
+ }
+ }
+
+ /* When the other BSS has reported a completed handover, this side is
+ * torn down. */
+
+ BSSAP.send(ts_BSSMAP_ClearCommand(cause));
+
+ /* Expecting MGCP to DLCX the endpoint's two connections: towards BTS
and towards MSC */
+ interleave {
+ [] BSSAP.receive(tr_BSSMAP_ClearComplete);
+ [] MGCP.receive(tr_DLCX()) -> value mgcp {
+ log("Got first DLCX: ", mgcp);
+ }
+ [] MGCP.receive(tr_DLCX()) -> value mgcp {
+ log("Got second DLCX: ", mgcp);
+ }
+ }
+ setverdict(pass);
+ f_sleep(1.0);
+}
+testcase TC_ho_out_of_this_bsc() runs on test_CT {
+ var MSC_ConnHdlr vc_conn;
+
+ f_init(1, true);
+ f_sleep(1.0);
+
+ vc_conn := f_start_handler(refers(f_tc_ho_out_of_this_bsc));
+ vc_conn.done;
+}
+
+template PDU_BSSAP ts_BSSMAP_HandoverRequest(
+ template BSSMAP_IE_CellIdentifier cell_id_target :=
ts_CellID_LAC_CI(1, 0),
+ template BSSMAP_IE_CellIdentifier cell_id_source :=
ts_CellID_LAC_CI(1, 1),
+ template BSSMAP_IE_AoIP_TransportLayerAddress aoip_tla :=
ts_BSSMAP_IE_AoIP_TLA4('01020304'O, 2342)
+ )
+modifies ts_BSSAP_BSSMAP := {
+ pdu := {
+ bssmap := {
+ handoverRequest := {
+ messageType := '10'O,
+ channelType :=
valueof(ts_BSSMAP_IE_ChannelType),
+ encryptionInformation :=
+
valueof(ts_BSSMAP_IE_EncrInfo('0000000000000000'O,'01'O)),
+ classmarkInformationType := {
+ classmarkInformationType1 := {
+ elementIdentifier := '1D'O,
+ rf_PowerCapability := '000'B,
+ a5_1 := '0'B,
+ esind := '0'B,
+ revisionLevel := '10'B,
+ spare1_1 := '0'B
+ }
+ },
+ cellIdentifierSource := cell_id_source,
+ priority := omit,
+ circuitIdentityCode := omit,
+ downLinkDTX_Flag := omit,
+ cellIdentifierTarget := cell_id_target,
+ interferenceBandToBeUsed := omit,
+ cause := omit,
+ classmarkInformationType3 := omit,
+ currentChannelType1 := omit,
+ speechVersion := omit,
+ groupCallReference := omit,
+ talkerFlag := omit,
+ configurationEvolutionIndication := omit,
+ chosenEncryptionAlgorithm := omit,
+ oldToNewBSSInfo := omit,
+ lSAInformation := omit,
+ lSAAccessControlSuppression := omit,
+ serviceHandover := omit,
+ iMSI_bssmap := omit,
+ sourceToTargetRNCTransparentInfo := omit,
+ sourceToTargetRNCTransparentInfoCDMA := omit,
+ sNAAccessInformation := omit,
+ talkerPriority := omit,
+ aoIPTransportLayer := aoip_tla,
+ codecList := omit,
+ callIdentifier := omit,
+ kC128 := omit,
+ globalCallReference := omit,
+ lCLS_Configuration := omit,
+ connectionStatusControl := omit
+ }
+ }
+ }
+}
+
+template PDU_BSSAP tr_BSSMAP_HandoverRequestAcknowledge(octetstring layer3info)
+modifies tr_BSSAP_BSSMAP := {
+ pdu := {
+ bssmap := {
+ handoverRequestAck := {
+ messageType := '12'O,
+ layer3Information := {
+ elementIdentifier := '17'O,
+ lengthIndicator := 0,
+ layer3info := layer3info
+ }
+ }
+ }
+ }
+}
+
+private function f_tc_ho_into_this_bsc(charstring id) runs on MSC_ConnHdlr {
+ var BSSAP_N_DATA_ind rx_di;
+
+ BSSAP.send(ts_BSSAP_CONNECT_req(g_bssap.sccp_addr_peer,
g_bssap.sccp_addr_own, 2342,
+ ts_BSSMAP_HandoverRequest()));
+ BSSAP.receive(tr_BSSAP_CONNECT_cfm(2342, omit));
+
+ BSSAP.receive(tr_BSSAP_DATA_ind(2342,
tr_BSSMAP_HandoverRequestAcknowledge('1234'O)));
+
+ alt {
+ [] BSSAP.receive(tr_BSSAP_DATA_ind(2342, tr_BSSMAP_ClearRequest)) ->
value rx_di {
+ var BssmapCause cause :=
bit2int(rx_di.userData.pdu.bssmap.clearRequest.cause.causeValue);
+ BSSAP.send(ts_BSSAP_DATA_req(2342,
ts_BSSMAP_ClearCommand(cause)));
+ repeat;
+ }
+ [] BSSAP.receive(tr_BSSAP_DATA_ind(2342, tr_BSSMAP_ClearComplete));
+ }
+
+ setverdict(pass);
+}
+
+testcase TC_ho_into_this_bsc() runs on test_CT {
+ var MSC_ConnHdlr vc_conn;
+
+ f_init(1, true);
+ f_sleep(1.0);
+
+ vc_conn := f_start_handler(refers(f_tc_ho_into_this_bsc));
+ vc_conn.done;
+}
+
control {
/* CTRL interface testing */
execute( TC_ctrl_msc_connection_status() );
@@ -2566,7 +2855,6 @@
execute( TC_unsol_ho_fail() );
execute( TC_err_82_short_msg() );
execute( TC_err_84_unknown_msg() );
- execute( TC_ho_int() );
execute( TC_bssap_rlsd_does_not_cause_bssmap_reset() );
execute( TC_bssmap_clear_does_not_cause_bssmap_reset() );
@@ -2577,6 +2865,10 @@
execute( TC_dyn_pdch_osmo_act_deact() );
execute( TC_dyn_pdch_osmo_act_nack() );
+ execute( TC_ho_int() );
+ execute( TC_ho_out_of_this_bsc() );
+ execute( TC_ho_into_this_bsc() );
+
/* at bottom as they might crash OsmoBSC before OS#3182 is fixed */
execute( TC_early_conn_fail() );
execute( TC_late_conn_fail() );
diff --git a/bsc/osmo-bsc.cfg b/bsc/osmo-bsc.cfg
index 1ccef09..b2409a5 100644
--- a/bsc/osmo-bsc.cfg
+++ b/bsc/osmo-bsc.cfg
@@ -88,6 +88,8 @@
early-classmark-sending forbidden
ip.access unit_id 1234 0
oml ip.access stream_id 255 line 0
+ # remote-BSS neighbor:
+ neighbor add lac 99 arfcn 123 bsic any
neighbor-list mode manual-si5
neighbor-list add arfcn 100
neighbor-list add arfcn 200
--
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Gerrit-Project: osmo-ttcn3-hacks
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: Id22852d4be7f127d827e7a8beeec55db27c07f03
Gerrit-Change-Number: 9674
Gerrit-PatchSet: 1
Gerrit-Owner: Neels Hofmeyr <[email protected]>
