fixeria has uploaded this change for review. (
https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/15410
Change subject: PCU_Tests_RAW.ttcn: introduce TC_ta_init_prach to test initial
TA
..
PCU_Tests_RAW.ttcn: introduce TC_ta_init_prach to test initial TA
Change-Id: I21f76ae723519c0eb54515922a05ca8045b00ade
---
M library/GSM_RR_Types.ttcn
M pcu/PCU_Tests_RAW.ttcn
2 files changed, 68 insertions(+), 1 deletion(-)
git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks
refs/changes/10/15410/1
diff --git a/library/GSM_RR_Types.ttcn b/library/GSM_RR_Types.ttcn
index 457f0f5..987f808 100644
--- a/library/GSM_RR_Types.ttcn
+++ b/library/GSM_RR_Types.ttcn
@@ -589,7 +589,8 @@
/* TODO: starting time TLV */
IaRestOctetsrest_octets optional
} with { variant (chan_desc) "PRESENCE(ded_or_tbf.tbf = false)"
-variant (pkt_chan_desc) "PRESENCE(ded_or_tbf.tbf = true)" };
+variant (pkt_chan_desc) "PRESENCE(ded_or_tbf.tbf = true)"
+variant "PADDING(184), PADDING_PATTERN('00101011'B)" };
/* 9.1.20 */
type record ReqRefWaitInd {
@@ -766,6 +767,31 @@
}
};
+ template GsmRrMessage tr_IMM_TBF_ASS(template boolean dl := ?,
+template uint8_t ra := ?,
+template GsmFrameNumber fn := ?,
+template TimingAdvance ta := ?,
+template PacketChannelDescription
ch_desc := ?,
+template IaRestOctets rest := ?)
:= {
+ header := t_RrHeader(IMMEDIATE_ASSIGNMENT, ?),
+ payload := {
+ imm_ass := {
+ ded_or_tbf := {
+ spare := ?,
+ tma := ?,
+ downlink := dl,
+ tbf := true
+ },
+ page_mode := PAGE_MODE_NORMAL,
+ chan_desc := omit,
+ pkt_chan_desc := ch_desc,
+ req_ref := tr_compute_ReqRef(ra, fn),
+ timing_advance := ta,
+ mobile_allocation := ?,
+ rest_octets := rest
+ }
+ }
+ };
template (value) GsmRrL3Message ts_MEAS_REP(boolean valid, uint6_t
rxl_f, uint6_t rxl_s,
uint3_t rxq_f, uint3_t rxq_s,
diff --git a/pcu/PCU_Tests_RAW.ttcn b/pcu/PCU_Tests_RAW.ttcn
index 4732da6..03d914c 100644
--- a/pcu/PCU_Tests_RAW.ttcn
+++ b/pcu/PCU_Tests_RAW.ttcn
@@ -438,6 +438,44 @@
setverdict(pass);
}
+/* Test of correct Timing Advance at the time of TBF establishment
+ * (derived from timing offset during PRACH request). */
+testcase TC_ta_init_prach() runs on RAW_Test_CT {
+ /* Initialize NS codec
+* TODO: do we really need it? */
+ f_init_ns_codec();
+
+ /* Initialize PCU interface (emulate the BTS) */
+ f_init_pcuif();
+
+ /* Packet Immediate Assignment on AGCH */
+ var template PCUIF_Message data_req_tpl := tr_PCUIF_DATA_REQ(
+ bts_nr := 0, trx_nr := 0, ts_nr := 0,
+ sapi := PCU_IF_SAPI_AGCH);
+
+ for (var integer ta := 0; ta < 64; ta := ta + 16) {
+ /* Send an Access Burst (8-bit)
+* FIXME: properly encode RA,
+* HACK: we're using the same TDMA FN */
+ f_pcuif_tx(ts_PCUIF_RACH_IND(bts_nr := 0, ra := oct2int('3A'O),
is_11bit := 0,
+burst_type := BURST_TYPE_0,
+fn := 1337, arfcn := 871,
+qta := ta * 4));
+
+ /* Expect Immediate (TBF) Assignment on TS0/AGCH */
+ data_req_tpl.u.data_req.data := decmatch tr_IMM_TBF_ASS(
+ dl := false, ra := oct2int('3A'O), fn := 1337, ta :=
ta);
+ alt {
+ [] PCU.receive(t_SD_PCUIF(g_pcu_conn_id, data_req_tpl)) {
+ log("Rx Immediate Assignment for UL TBF");
+ setverdict(pass);
+ }
+ [] PCU.receive(t_SD_PCUIF(g_pcu_conn_id, PCUIF_Message:?)) {
+ repeat;
+ }
+ }
+ }
+}
control {
execute( TC_ns_reset() );
@@ -450,6 +488,9 @@
execute( TC_ns_so_block() );
execute( TC_pcuif_suspend() );
+
+ /* Timing Advance tests (see GSM TS 43.064, section 6) */
+ execute( TC_ta_init_prach() );
}
--
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