12 Oct
2012
12 Oct
'12
12:32 p.m.
Hi, Vladimir!
I fixed this problem with PDTCH channel and got rid of T3111, T3109
and T3101 timers.
Just update your repository.
I have two recommendations for tests:
1. Run osmo-pcu with parameters of your SIM card, for that use options:
-m --mcc MCC use given MCC instead of value provided by BTS
-n --mnc MNC use given MNC instead of value provided by BTS
Example:
./osmo-pcu -n 02 -m 250
2. Add config file to osmo-pcu/src directory, which you can find in attachment.
2012/10/11 Vladimir Rolbin <vrolbin(a)gmail.com>om>:
Hi, Ivan
Yes, the patch is applied..
It's not so clear the role of the timers mT3101, mT3111 and mT3109 for PDTCH
channel.
If I see well when "AccessGrantResponder -> LCH = gBTS.getPDTCH();" the
same
channel
is opened every time (it's never closed explicitly):
LogicalChannel::open(); -> L1FEC::open() -> mDecoder->open(); -> void
L1Decoder::open() ->
{
ScopedLock lock(mLock);
if (!mRunning) start();
mFER=0.0F;
mT3111.reset();
mT3109.reset();
mT3101.set();
mActive = true;
}
handleGoodFrame function is overridden, so the channel stops to be active
here after mT3101 is elapsed:
void XCCHL1Decoder::writeLowSide(const RxBurst& inBurst)
{
OBJLOG(DEBUG) <<"XCCHL1Decoder " << inBurst;
// If the channel is closed, ignore the burst.
if (!active()) {
OBJLOG(DEBUG) <<"XCCHL1Decoder not active, ignoring input";
return;
}
...
}
Pls advice..
Regards,
Vladimir
On Wed, Oct 10, 2012 at 6:13 PM, Ivan Kluchnikov
<Ivan.Kluchnikov(a)fairwaves.ru> wrote:
--
Regards,
Ivan Kluchnikov.
http://fairwaves.ru
Hi, Vladimir!
Hi, Vladimir!
I haven't any problems with downlink assignment and
PACKET_UPLINK_ACK_NACK now, but I will check it.
Please, check, have you applied this patch?
https://github.com/chemeris/openbts-p2.8/commit/bfa47ccfa26ab30b0232584ac67…
2012/10/10 Vladimir Rolbin <vrolbin(a)gmail.com>om>:
Similar problem with
DL_PACKET_UPLINK_ACK_NACK..., now logs are
synchronized:
BTS:
1349870962.242903 3064806256: [ BTS -> PCU ] PhDataInd: FN 2543233 FN52
17
DATA raw=(0401018aae8c0f01c0050816083a853907018754033d89)
1349870962.261436 3064806256: [ BTS -> PCU ] PhDataInd: FN 2543237 FN52
21
DATA raw=(000102058aae8c0f1b2b2b2b2b2b2b2b2b2b2b2b2b2b2b)
1349870962.262173 3042884464: [ PCU -> BTS ] PCH: L2Length 11
primitive=UNIT_DATA raw=(063f300f40027d6ba40000d8aae8c0f81a022b2b2b2b)
1349870962.262261 3042884464: [ BTS -> PCU ] PhPchCnf:
2d063f300f40027d6ba40000d8aae8c0f81a022b2b2b2b
1349870962.263013 3042884464: [ PCU -> BTS ] PACCH FN 2543250 FN52 34
CNTRL1
raw=(4f2400208000000000000000f155d181e02b2b2b2b2b2b)
DL_PACKET_UPLINK_ACK_NACK
1349870962.283385 3064806256: [ BTS -> PCU ] PhDataInd: FN 2543242 FN52
26
DATA raw=(0401018aae8c0f01c0050816083a853907018754033d89)
1349870962.302008 3064806256: [ BTS -> PCU ] PhDataInd: FN 2543246 FN52
30
DATA raw=(000102058aae8c0f1b2b2b2b2b2b2b2b2b2b2b2b2b2b2b)
1349870962.320769 3064806256: [ BTS -> PCU ] PhDataInd: FN 2543250 FN52
34
DATA raw=(0401018aae8c0f01c0050816083a853907018754033d89)
1349870962.362534 3064806256: [ BTS -> PCU ] PhDataInd: FN 2543259 FN52
43
CNTRL1 raw=(40062aba303f2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b)
UL_PACKET_CONTROL_ACKNOWLEDGEMENT
1349870962.480042 3042884464: [ PCU -> BTS ] PDTCH: FN 2543298 FN52 30
DATA
raw=(0f01002541c001081501ff6cba2b2b2b2b2b2b2b2b2b2b)
PCU:
<0005> gprs_rlcmac_data.cpp:880 Decoded premier TLLI=0x8aae8c0f of UL
DATA
TBF=0.
<0005> gprs_rlcmac_data.cpp:743 Complete UL frame for TBF=0: len=17
<0008> gprs_rlcmac.cpp:1760 LLC [PCU -> SGSN] TFI: 0 TLLI: 0x8aae8c0f
len=17
<0008> gprs_bssgp_pcu.cpp:145 LLC [SGSN -> PCU] = TLLI: 0x8aae8c0f IMSI:
000
len: 9
<0002> gprs_rlcmac.cpp:354 Allocating DL TBF: TFI=0 TRX=0 MS_CLASS=10
<0002> gprs_rlcmac.cpp:948 - Setting Control TS 7
<0002> gprs_rlcmac_data.cpp:1804 TX: START TFI: 0 TLLI: 0x8aae8c0f
Immediate
Assignment Downlink (PCH)
<0002> gprs_rlcmac_data.cpp:281 PACKET CONTROL ACK with unknown
FN=2543259
TLL=0x8aae8c0f (TRX 0 TS 7)
<0002> gprs_rlcmac.cpp:895 Free UL TBF=0 with TLLI=0x8aae8c0f.
<0004> gprs_rlcmac_data.cpp:1456 Complete DL frame for TBF=0: len=9
<0002> gprs_rlcmac.cpp:895 Free DL TBF=0 with TLLI=0x8aae8c0f.
<0008> gprs_bssgp_pcu.cpp:145 LLC [SGSN -> PCU] = TLLI: 0x8aae8c0f IMSI:
000
len: 9
<0002> gprs_rlcmac.cpp:354 Allocating DL TBF: TFI=0 TRX=0 MS_CLASS=10
<0002> gprs_rlcmac.cpp:948 - Setting Control TS 7
<0002> gprs_rlcmac_data.cpp:1804 TX: START TFI: 0 TLLI: 0x8aae8c0f
Immediate
Assignment Downlink (PCH)
<0004> gprs_rlcmac_data.cpp:1456 Complete DL frame for TBF=0: len=9
<0002> gprs_rlcmac.cpp:895 Free DL TBF=0 with TLLI=0x8aae8c0f.
...
From: Vladimir Rolbin [mailto:vrolbin@gmail.com]
Sent: Tuesday, October 09, 2012 5:17 PM
To: osmocom-pcu(a)lists.osmocom.org; openbts-discuss(a)lists.sourceforge.net
Subject: [Openbts-discuss] gprs PACCH downlink assignment problem
Hi,
My set is openbts-p2.8-gprs-exp/osmo-pcu-jolly. I encounter the problem
with
PACCH downlink assignment:
If the difference between FNs of DL_PACKET_DOWNLINK_ASSIGNMENT and
corresponding UL_PACKET_CONTROL_ACKNOWLEDGEMENT
is expected (RRBP = 0) 13 everything is OK (OpenBTS log):
1347379490.099008 3031505776: [ PCU -> BTS ] PACCH FN 2536893 FN52 21
CNTRL1
raw=(4f0800000c03400a0800802b2b2b2b2b2b2b2b2b2b2b2b)
DL_PACKET_DOWNLINK_ASSIGNMENT
1347379490.118500 3063704432: [ BTS -> PCU ] PhDataInd: FN 2536885 FN52
13
DATA raw=(100101cc741f3203c005650000014500003c00010000ff)
1347379490.136108 3063704432: [ BTS -> PCU ] PhDataInd: FN 2536889 FN52
17
DATA raw=(080105cc741f3228e2a8c8aa0100000100000000000003)
1347379490.154624 3063704432: [ BTS -> PCU ] PhDataInd: FN 2536893 FN52
21
DATA raw=(040107cc741f32777777066b616e6e656c036f72670000)
1347379490.215582 3063704432: [ BTS -> PCU ] PhDataInd: FN 2536906 FN52
34
CNTRL1
raw=(400731d07ccb2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b)UL_PACKET_CONTROL_ACKNOWLEDGEMENT
But it's not always the case
1349788219.582282 3043367792: [ PCU -> BTS ] PACCH FN 2189728 FN52 8
CNTRL1
raw=(4f0800000c02800a0d00802b2b2b2b2b2b2b2b2b2b2b2b)
DL_PACKET_DOWNLINK_ASSIGNMENT
1349788219.601978 3064179568: [ BTS -> PCU ] PhDataInd: FN 2189720 FN52
0
DATA raw=(040103ae3558373751f40103e800101773022a85464200)
1349788219.620378 3064179568: [ BTS -> PCU ] PhDataInd: FN 2189724 FN52
4
DATA raw=(0001042dae355837026a4e0432100000258ccc2b2b2b2b)
1349788219.638881 3064179568: [ BTS -> PCU ] PhDataInd: FN 2189728 FN52
8
DATA raw=(040103ae3558373751f40103e800101773022a85464200)
1349788219.680973 3064179568: [ BTS -> PCU ] PhDataInd: FN 2189737 FN52
17
CNTRL1 raw=(4006b8d560df2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b)
UL_PACKET_CONTROL_ACKNOWLEDGEMENT
diff FN = 9, that causes the following behaviour in pcu:
<0002> gprs_rlcmac_data.cpp:1753 TBF: START TFI: 0 TLLI: 0xae355837
Packet
Downlink Assignment (PACCH)
<0004> gprs_rlcmac_data.cpp:1442 Complete DL frame for TBF=0: len=9
<0002> gprs_rlcmac_data.cpp:281 PACKET CONTROL ACK with unknown
FN=2163607
TLL=0xae355837 (TRX 0 TS 7)
<0002> gprs_rlcmac_data.cpp:100 Poll timeout for UL TBF=0
<0002> gprs_rlcmac_data.cpp:107 - Timeout for polling PACKET CONTROL ACK
for
PACKET UPLINK ACK
Any ideas? Is it the known issue?
Regards,
Vladimir Rolbin
--
Regards,
Ivan Kluchnikov.
http://fairwaves.ru