<div dir="ltr"><div>Hi, Ivan</div>
<div> </div>
<div>Yes, the patch is applied..</div>
<div>It's not so clear the role of the timers mT3101, mT3111 and mT3109 for PDTCH channel.</div>
<div>If I see well when "AccessGrantResponder -> LCH = gBTS.getPDTCH();" the same channel</div>
<div>is opened every time (it's never closed explicitly):</div>
<div> </div>
<div>LogicalChannel::open(); -> L1FEC::open() -> mDecoder->open(); -> void L1Decoder::open() -><br></div>
<div>{<br> ScopedLock lock(mLock);<br> if (!mRunning) start();<br> mFER=0.0F;<br> mT3111.reset();<br> mT3109.reset();<br> mT3101.set();<br> mActive = true;<br>}</div>
<div> </div>
<div>handleGoodFrame function is overridden, so the channel stops to be active here after mT3101 is elapsed:</div>
<div> </div>
<div>void XCCHL1Decoder::writeLowSide(const RxBurst& inBurst)<br>{<br> OBJLOG(DEBUG) <<"XCCHL1Decoder " << inBurst;<br> // If the channel is closed, ignore the burst.<br> if (!active()) {<br> OBJLOG(DEBUG) <<"XCCHL1Decoder not active, ignoring input";<br>
return;<br> }</div>
<div> </div>
<div>...</div>
<div> </div>
<div>}</div>
<div> </div>
<div>Pls advice..</div>
<div> </div>
<div>Regards,</div>
<div>Vladimir</div>
<div><br><br> </div>
<div class="gmail_quote">On Wed, Oct 10, 2012 at 6:13 PM, Ivan Kluchnikov <span dir="ltr"><<a href="mailto:Ivan.Kluchnikov@fairwaves.ru" target="_blank">Ivan.Kluchnikov@fairwaves.ru</a>></span> wrote:<br>
<blockquote style="BORDER-LEFT:#ccc 1px solid;MARGIN:0px 0px 0px 0.8ex;PADDING-LEFT:1ex" class="gmail_quote">Hi, Vladimir!<br><br><br>Hi, Vladimir!<br><br>I haven't any problems with downlink assignment and<br>PACKET_UPLINK_ACK_NACK now, but I will check it.<br>
Please, check, have you applied this patch?<br><a href="https://github.com/chemeris/openbts-p2.8/commit/bfa47ccfa26ab30b0232584ac67f6b195644329a" target="_blank">https://github.com/chemeris/openbts-p2.8/commit/bfa47ccfa26ab30b0232584ac67f6b195644329a</a><br>
<br><br>2012/10/10 Vladimir Rolbin <<a href="mailto:vrolbin@gmail.com">vrolbin@gmail.com</a>>:<br>> Similar problem with DL_PACKET_UPLINK_ACK_NACK..., now logs are<br>> synchronized:<br>><br>> BTS:<br>><br>
> 1349870962.242903 <a href="tel:3064806256" value="+13064806256">3064806256</a>: [ BTS -> PCU ] PhDataInd: FN 2543233 FN52 17<br>> DATA raw=(0401018aae8c0f01c0050816083a853907018754033d89)<br>> 1349870962.261436 3064806256: [ BTS -> PCU ] PhDataInd: FN 2543237 FN52 21<br>
> DATA raw=(000102058aae8c0f1b2b2b2b2b2b2b2b2b2b2b2b2b2b2b)<br>> 1349870962.262173 3042884464: [ PCU -> BTS ] PCH: L2Length 11<br>> primitive=UNIT_DATA raw=(063f300f40027d6ba40000d8aae8c0f81a022b2b2b2b)<br>> 1349870962.262261 3042884464: [ BTS -> PCU ] PhPchCnf:<br>
> 2d063f300f40027d6ba40000d8aae8c0f81a022b2b2b2b<br>> 1349870962.263013 3042884464: [ PCU -> BTS ] PACCH FN 2543250 FN52 34 CNTRL1<br>> raw=(4f2400208000000000000000f155d181e02b2b2b2b2b2b)<br>> DL_PACKET_UPLINK_ACK_NACK<br>
> 1349870962.283385 3064806256: [ BTS -> PCU ] PhDataInd: FN 2543242 FN52 26<br>> DATA raw=(0401018aae8c0f01c0050816083a853907018754033d89)<br>> 1349870962.302008 3064806256: [ BTS -> PCU ] PhDataInd: FN 2543246 FN52 30<br>
> DATA raw=(000102058aae8c0f1b2b2b2b2b2b2b2b2b2b2b2b2b2b2b)<br>> 1349870962.320769 3064806256: [ BTS -> PCU ] PhDataInd: FN 2543250 FN52 34<br>> DATA raw=(0401018aae8c0f01c0050816083a853907018754033d89)<br>> 1349870962.362534 3064806256: [ BTS -> PCU ] PhDataInd: FN 2543259 FN52 43<br>
> CNTRL1 raw=(40062aba303f2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b)<br>> UL_PACKET_CONTROL_ACKNOWLEDGEMENT<br>> 1349870962.480042 3042884464: [ PCU -> BTS ] PDTCH: FN 2543298 FN52 30 DATA<br>> raw=(0f01002541c001081501ff6cba2b2b2b2b2b2b2b2b2b2b)<br>
><br>> PCU:<br>><br>> <0005> gprs_rlcmac_data.cpp:880 Decoded premier TLLI=0x8aae8c0f of UL DATA<br>> TBF=0.<br>> <0005> gprs_rlcmac_data.cpp:743 Complete UL frame for TBF=0: len=17<br>> <0008> gprs_rlcmac.cpp:1760 LLC [PCU -> SGSN] TFI: 0 TLLI: 0x8aae8c0f len=17<br>
> <0008> gprs_bssgp_pcu.cpp:145 LLC [SGSN -> PCU] = TLLI: 0x8aae8c0f IMSI: 000<br>> len: 9<br>> <0002> gprs_rlcmac.cpp:354 Allocating DL TBF: TFI=0 TRX=0 MS_CLASS=10<br>> <0002> gprs_rlcmac.cpp:948 - Setting Control TS 7<br>
> <0002> gprs_rlcmac_data.cpp:1804 TX: START TFI: 0 TLLI: 0x8aae8c0f Immediate<br>> Assignment Downlink (PCH)<br>> <0002> gprs_rlcmac_data.cpp:281 PACKET CONTROL ACK with unknown FN=2543259<br>> TLL=0x8aae8c0f (TRX 0 TS 7)<br>
> <0002> gprs_rlcmac.cpp:895 Free UL TBF=0 with TLLI=0x8aae8c0f.<br>> <0004> gprs_rlcmac_data.cpp:1456 Complete DL frame for TBF=0: len=9<br>> <0002> gprs_rlcmac.cpp:895 Free DL TBF=0 with TLLI=0x8aae8c0f.<br>
> <0008> gprs_bssgp_pcu.cpp:145 LLC [SGSN -> PCU] = TLLI: 0x8aae8c0f IMSI: 000<br>> len: 9<br>> <0002> gprs_rlcmac.cpp:354 Allocating DL TBF: TFI=0 TRX=0 MS_CLASS=10<br>> <0002> gprs_rlcmac.cpp:948 - Setting Control TS 7<br>
> <0002> gprs_rlcmac_data.cpp:1804 TX: START TFI: 0 TLLI: 0x8aae8c0f Immediate<br>> Assignment Downlink (PCH)<br>> <0004> gprs_rlcmac_data.cpp:1456 Complete DL frame for TBF=0: len=9<br>> <0002> gprs_rlcmac.cpp:895 Free DL TBF=0 with TLLI=0x8aae8c0f.<br>
><br>> ...<br>><br>><br>><br>> From: Vladimir Rolbin [mailto:<a href="mailto:vrolbin@gmail.com">vrolbin@gmail.com</a>]<br>> Sent: Tuesday, October 09, 2012 5:17 PM<br>> To: <a href="mailto:osmocom-pcu@lists.osmocom.org">osmocom-pcu@lists.osmocom.org</a>; <a href="mailto:openbts-discuss@lists.sourceforge.net">openbts-discuss@lists.sourceforge.net</a><br>
> Subject: [Openbts-discuss] gprs PACCH downlink assignment problem<br>><br>><br>><br>> Hi,<br>><br>><br>><br>> My set is openbts-p2.8-gprs-exp/osmo-pcu-jolly. I encounter the problem with<br>> PACCH downlink assignment:<br>
><br>><br>><br>> If the difference between FNs of DL_PACKET_DOWNLINK_ASSIGNMENT and<br>> corresponding UL_PACKET_CONTROL_ACKNOWLEDGEMENT<br>> is expected (RRBP = 0) 13 everything is OK (OpenBTS log):<br>
><br>><br>><br>> 1347379490.099008 3031505776: [ PCU -> BTS ] PACCH FN 2536893 FN52 21 CNTRL1<br>> raw=(4f0800000c03400a0800802b2b2b2b2b2b2b2b2b2b2b2b)<br>> DL_PACKET_DOWNLINK_ASSIGNMENT<br>> 1347379490.118500 3063704432: [ BTS -> PCU ] PhDataInd: FN 2536885 FN52 13<br>
> DATA raw=(100101cc741f3203c005650000014500003c00010000ff)<br>> 1347379490.136108 3063704432: [ BTS -> PCU ] PhDataInd: FN 2536889 FN52 17<br>> DATA raw=(080105cc741f3228e2a8c8aa0100000100000000000003)<br>> 1347379490.154624 3063704432: [ BTS -> PCU ] PhDataInd: FN 2536893 FN52 21<br>
> DATA raw=(040107cc741f32777777066b616e6e656c036f72670000)<br>> 1347379490.215582 3063704432: [ BTS -> PCU ] PhDataInd: FN 2536906 FN52 34<br>> CNTRL1<br>> raw=(400731d07ccb2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b)UL_PACKET_CONTROL_ACKNOWLEDGEMENT<br>
><br>><br>><br>><br>><br>> But it's not always the case<br>><br>><br>><br>> 1349788219.582282 3043367792: [ PCU -> BTS ] PACCH FN 2189728 FN52 8 CNTRL1<br>> raw=(4f0800000c02800a0d00802b2b2b2b2b2b2b2b2b2b2b2b)<br>
> DL_PACKET_DOWNLINK_ASSIGNMENT<br>> 1349788219.601978 3064179568: [ BTS -> PCU ] PhDataInd: FN 2189720 FN52 0<br>> DATA raw=(040103ae3558373751f40103e800101773022a85464200)<br>> 1349788219.620378 3064179568: [ BTS -> PCU ] PhDataInd: FN 2189724 FN52 4<br>
> DATA raw=(0001042dae355837026a4e0432100000258ccc2b2b2b2b)<br>> 1349788219.638881 3064179568: [ BTS -> PCU ] PhDataInd: FN 2189728 FN52 8<br>> DATA raw=(040103ae3558373751f40103e800101773022a85464200)<br>> 1349788219.680973 3064179568: [ BTS -> PCU ] PhDataInd: FN 2189737 FN52 17<br>
> CNTRL1 raw=(4006b8d560df2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b)<br>> UL_PACKET_CONTROL_ACKNOWLEDGEMENT<br>><br>><br>><br>> diff FN = 9, that causes the following behaviour in pcu:<br>><br>><br>><br>
> <0002> gprs_rlcmac_data.cpp:1753 TBF: START TFI: 0 TLLI: 0xae355837 Packet<br>> Downlink Assignment (PACCH)<br>> <0004> gprs_rlcmac_data.cpp:1442 Complete DL frame for TBF=0: len=9<br>> <0002> gprs_rlcmac_data.cpp:281 PACKET CONTROL ACK with unknown FN=2163607<br>
> TLL=0xae355837 (TRX 0 TS 7)<br>> <0002> gprs_rlcmac_data.cpp:100 Poll timeout for UL TBF=0<br>> <0002> gprs_rlcmac_data.cpp:107 - Timeout for polling PACKET CONTROL ACK for<br>> PACKET UPLINK ACK<br>
><br>><br>><br>> Any ideas? Is it the known issue?<br>><br>><br>> Regards,<br>><br>> Vladimir Rolbin<br>><br>><br><span class="HOEnZb"><font color="#888888"><br><br><br>--<br>Regards,<br>
Ivan Kluchnikov.<br><a href="http://fairwaves.ru/" target="_blank">http://fairwaves.ru</a><br></font></span></blockquote></div><br></div>