<p>fixeria has uploaded this change for <strong>review</strong>.</p><p><a href="https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/17966">View Change</a></p><pre style="font-family: monospace,monospace; white-space: pre-wrap;">PCU: Timing Advance: introduce TC_ta_idle_dl_tbf_ass<br><br>This test case initiates the packet Downlink assignment procedure<br>by sending a DL-UNITDATA PDU containing a random TLLI and checks<br>Timing Advance value indicated in the Immediate Assignment.<br><br>Currently fails due to a bug in the IUT (TA=220).<br><br>Change-Id: I410abedcc549495f30b5355d399a85648408a946<br>---<br>M pcu/PCU_Tests_RAW.ttcn<br>1 file changed, 33 insertions(+), 0 deletions(-)<br><br></pre><pre style="font-family: monospace,monospace; white-space: pre-wrap;">git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks refs/changes/66/17966/1</pre><pre style="font-family: monospace,monospace; white-space: pre-wrap;"><span>diff --git a/pcu/PCU_Tests_RAW.ttcn b/pcu/PCU_Tests_RAW.ttcn</span><br><span>index 0e3597b..228b19b 100644</span><br><span>--- a/pcu/PCU_Tests_RAW.ttcn</span><br><span>+++ b/pcu/PCU_Tests_RAW.ttcn</span><br><span>@@ -1313,6 +1313,38 @@</span><br><span> f_TC_mt_ping_pong(ms_racap, exp_cs_mcs);</span><br><span> }</span><br><span> </span><br><span style="color: hsl(120, 100%, 40%);">+/* Verify Timing Advance value(s) indicated during the packet Downlink assignment</span><br><span style="color: hsl(120, 100%, 40%);">+ * procedure as per 3GPP TS 44.018, section 3.5.3. There seems to be a bug in the</span><br><span style="color: hsl(120, 100%, 40%);">+ * IUT that causes it to send an unreasonable Timing Advance value > 0 despite</span><br><span style="color: hsl(120, 100%, 40%);">+ * no active TBF exists at the moment of establishment (idle mode). */</span><br><span style="color: hsl(120, 100%, 40%);">+testcase TC_ta_idle_dl_tbf_ass() runs on RAW_PCU_Test_CT {</span><br><span style="color: hsl(120, 100%, 40%);">+ var OCT4 tlli := f_rnd_octstring(4);</span><br><span style="color: hsl(120, 100%, 40%);">+ var GsmRrMessage rr_imm_ass;</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ /* Initialize NS/BSSGP side */</span><br><span style="color: hsl(120, 100%, 40%);">+ f_init_bssgp();</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ /* Initialize the PCU interface abstraction */</span><br><span style="color: hsl(120, 100%, 40%);">+ f_init_raw(testcasename());</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ /* Establish BSSGP connection to the PCU */</span><br><span style="color: hsl(120, 100%, 40%);">+ f_bssgp_establish();</span><br><span style="color: hsl(120, 100%, 40%);">+ f_bssgp_client_llgmm_assign('FFFFFFFF'O, tlli);</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ /* SGSN sends some DL data, PCU will initiate Packet Downlink</span><br><span style="color: hsl(120, 100%, 40%);">+ * Assignment on CCCH (PCH). We don't care about the payload. */</span><br><span style="color: hsl(120, 100%, 40%);">+ BSSGP[0].send(ts_BSSGP_DL_UD(tlli, f_rnd_octstring(10)));</span><br><span style="color: hsl(120, 100%, 40%);">+ f_pcuif_rx_pch_imm_tbf_ass(rr_imm_ass); // TODO: match by TLLI!</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ /* Make sure that Timing Advance is 0 (the actual value is not known yet).</span><br><span style="color: hsl(120, 100%, 40%);">+ * As per 3GPP S 44.018, section 3.5.3.1.2, the network *shall* initiate</span><br><span style="color: hsl(120, 100%, 40%);">+ * the procedures defined in 3GPP TS 44.060 or use the polling mechanism. */</span><br><span style="color: hsl(120, 100%, 40%);">+ if (not match(rr_imm_ass, tr_IMM_TBF_ASS(ta := 0))) {</span><br><span style="color: hsl(120, 100%, 40%);">+ setverdict(fail, "Timing Advance value doesn't match");</span><br><span style="color: hsl(120, 100%, 40%);">+ mtc.stop;</span><br><span style="color: hsl(120, 100%, 40%);">+ }</span><br><span style="color: hsl(120, 100%, 40%);">+}</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span> /* Verify that if PCU doesn't get an ACK for first DL block after IMM ASS, it</span><br><span> * will retry by retransmitting both the IMM ASS + DL block after poll (ack)</span><br><span> * timeout occurs (specified by sent RRBP on DL block). */</span><br><span>@@ -1685,6 +1717,7 @@</span><br><span> execute( TC_ta_ptcch_idle() );</span><br><span> execute( TC_ta_rach_imm_ass() );</span><br><span> execute( TC_ta_ptcch_ul_multi_tbf() );</span><br><span style="color: hsl(120, 100%, 40%);">+ execute( TC_ta_idle_dl_tbf_ass() );</span><br><span> execute( TC_cs_lqual_ul_tbf() );</span><br><span> execute( TC_cs_initial_ul() );</span><br><span> execute( TC_cs_max_ul() );</span><br><span></span><br></pre><p>To view, visit <a href="https://gerrit.osmocom.org/c/osmo-ttcn3-hacks/+/17966">change 17966</a>. 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<div style="display:none"> Gerrit-Project: osmo-ttcn3-hacks </div>
<div style="display:none"> Gerrit-Branch: master </div>
<div style="display:none"> Gerrit-Change-Id: I410abedcc549495f30b5355d399a85648408a946 </div>
<div style="display:none"> Gerrit-Change-Number: 17966 </div>
<div style="display:none"> Gerrit-PatchSet: 1 </div>
<div style="display:none"> Gerrit-Owner: fixeria <axilirator@gmail.com> </div>
<div style="display:none"> Gerrit-MessageType: newchange </div>