BTS_Tests.ttcn: add a test case for PTCCH/D and PTCCH/U
This test case is aimed to verify handling of both PTCCH/U and
PTCCH/D logical channels, recently implemented in [1]. This is
done by sending 16 Access Bursts on PTCCH/U, and then by
sending a random data block on PTCCH/D.
The existing TC_pcu_data_req_ptcch does not cover PTCCH/U, and
moreover involves TBF handling which has nothing to do with
PTCCH. Let's keep it anyway.
[1] I232e5f514fbad2c51daaa59ff516004aba97c8a3
Change-Id: I011ffdfa63b698ce6085968d15ffb4ff4bd23ee5
Related: OS#4102
diff --git a/bts/BTS_Tests.ttcn b/bts/BTS_Tests.ttcn
index f2861d1..90281e3 100644
--- a/bts/BTS_Tests.ttcn
+++ b/bts/BTS_Tests.ttcn
@@ -4143,6 +4143,7 @@
f_pcu_to_l1(0, 0, 7, PCU_IF_SAPI_PDTCH, data); //c_PCU_DATA);
}
+/* FIXME: PTTCH has nothing to do with TBFs */
testcase TC_pcu_data_req_ptcch() runs on test_CT {
var TfiUsfArr tua := f_TfiUsfArrInit();
var octetstring data := '0000'O & f_rnd_octstring(21);
@@ -4157,6 +4158,94 @@
f_pcu_to_l1(0, 0, 7, PCU_IF_SAPI_PTCCH, data);
}
+private function f_TC_pcu_ptcch_ul(uint16_t ra)
+runs on test_CT {
+ var template PCUIF_Message pcu_rach_ind;
+ var PCUIF_send_data sd;
+ var GsmFrameNumber fn;
+ timer T;
+
+ /* Send an Access Burst on PTCCH/U over the Um-interface */
+ fn := f_L1CTL_RACH(L1CTL, ra := ra, combined := 0, offset := 0,
+ chan_nr := ts_RslChanNr_PDCH(7),
+ link_id := ts_RslLinkID_OSMO_PTCCH(0));
+
+ /* TODO: check time-slot and TRX number as soon as we extend the PCU interface */
+ pcu_rach_ind := tr_PCUIF_RACH_IND(ra := ra, fn := fn, sapi := PCU_IF_SAPI_PTCCH);
+
+ /* Expect a RACH.ind on the PCU interface (timeout is one multi-frame) */
+ T.start(52.0 * 4.615 / 1000.0);
+ alt {
+ [] PCU.receive(t_SD_PCUIF(g_pcu_conn_id, pcu_rach_ind)) -> value sd {
+ log("Rx an Access Burst on the PCU interface: ", sd.data);
+ setverdict(pass);
+ T.stop;
+ }
+ [] PCU.receive { repeat; }
+ [] T.timeout {
+ setverdict(fail, "Timeout waiting for RACH.ind on the PCU interface");
+ /* Keep going, that's not the end of the world */
+ }
+ }
+}
+
+testcase TC_pcu_ptcch() runs on test_CT {
+ var L1ctlDlMessage dl;
+ var octetstring data;
+ timer T;
+
+ f_init_pcu_test();
+ f_init_l1ctl();
+ f_l1_tune(L1CTL);
+
+ /* Activate PDCH channel on TS7 */
+ f_TC_pcu_act_req(0, 0, 7, true);
+
+ /* Tune trxcon to that PDCH channel */
+ L1CTL.send(ts_L1CTL_DM_EST_REQ(arfcn := { false, mp_trx0_arfcn },
+ chan_nr := valueof(ts_RslChanNr_PDCH(7)),
+ tsc := 7));
+
+ /* Verify PTCCH/U: send several access bursts, make sure they're received */
+ for (var integer i := 0; i < 16; i := i + 1) {
+ log("Sending an Access Burst towards the L1CTL interface");
+ f_TC_pcu_ptcch_ul(oct2int(f_rnd_ra_ps()));
+ }
+
+ /* Generate a random payload for PTCCH/D (23 octets, CS-1) */
+ data := f_rnd_octstring(23);
+
+ /* Verify PTCCH/D: send a random data block, make sure it's received */
+ log("Sending a PTCCH/D block towards the PCU interface: ", data);
+ f_pcu_wait_rts_and_data_req(0, 0, 7, PCU_IF_SAPI_PTCCH, data);
+
+ /* PTCCH/D period is 2 multi-frames (2 * 52 * 4.615 ms), but
+ * let's give it more time in case if we miss the beginning. */
+ T.start(2.0 * 2.0 * 52.0 * 4.615 / 1000.0);
+ alt {
+ /* PDCH is considered as traffic in trxcon => expect TRAFFIC.ind */
+ [] L1CTL.receive(tr_L1CTL_TRAFFIC_IND(chan_nr := t_RslChanNr_PDCH(7),
+ link_id := tr_RslLinkID_OSMO_PTCCH(?),
+ frame := data)) -> value dl {
+ log("Rx PTCCH/D data (traffic) block on L1CTL: ", dl);
+ setverdict(pass);
+ T.stop;
+ }
+ /* Other PHYs (e.g. virt_phy) may consider PDCH as data => expect DATA.ind */
+ [] L1CTL.receive(tr_L1CTL_DATA_IND(chan_nr := t_RslChanNr_PDCH(7),
+ link_id := tr_RslLinkID_OSMO_PTCCH(?),
+ l2_data := data)) -> value dl {
+ log("Rx PTCCH/D data block on L1CTL: ", dl);
+ setverdict(pass);
+ T.stop;
+ }
+ [] L1CTL.receive { repeat; }
+ [] T.timeout {
+ setverdict(fail, "Timeout waiting for DATA.ind on L1CTL");
+ }
+ }
+}
+
/* Send AGCH from PCU; check it appears on Um side */
testcase TC_pcu_data_req_agch() runs on test_CT {
timer T := 3.0;
@@ -6267,6 +6356,7 @@
execute( TC_pcu_deact_req_wrong_ts() );
execute( TC_pcu_ver_si13() );
if (mp_l1_supports_gprs) {
+ execute( TC_pcu_ptcch() );
execute( TC_pcu_data_req_pdtch() );
execute( TC_pcu_data_req_ptcch() );
execute( TC_pcu_data_req_wrong_bts() );