OpenBSC

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4315 discussions

Slow database access at OpenBSC
by Andreas Eversberg 24 Jun '13

24 Jun '13

hi, i experienced audio glitches while another phone does location updating: <0001> gsm_04_08.c:191 (bts 1 trx 0 ts 0 pd 05) Sending 0x18 to MS. <0008> abis_rsl.c:1027 [262421104120913] MEASUREMENT RESULT NR=0 RXL-FULL-ul=-110dBm RXL-SUB-ul=-47dBm R Q-FULL-ul=0 RXQ-SUB-ul=0 BS_POWER=0 L1_MS_PWR= 0dBm L1_FPC=0 L1_TA=0 NOT VALID NUM_NEIGH=0 <0003> bsc_api.c:615 CLASSMARK CHANGE CM2(len=3) CM3(len=4) dbi access time 95ms Stalled 96ms <0008> abis_rsl.c:1027 [262421104120913] MEASUREMENT RESULT NR=1 RXL-FULL-ul=-66dBm RXL-SUB-ul=-47dBm RX -FULL-ul=0 RXQ-SUB-ul=0 BS_POWER=0 L1_MS_PWR= 0dBm L1_FPC=0 L1_TA=0 RXL-FULL-dl=-47dBm RXL-SUB-dl=-47dB RXQ-FULL-dl=0 RXQ-SUB-dl=0 NUM_NEIGH=7 dbi access time 50ms dbi access time 0ms dbi access time 49ms dbi access time 58ms dbi access time 83ms dbi access time 0ms dbi access time 0ms dbi access time 0ms dbi access time 72ms <0003> gsm_04_08_utils.c:315 TX CIPHERING MODE CMD Stalled 319ms <0008> abis_rsl.c:1027 [262421104120913] MEASUREMENT RESULT NR=2 RXL-FULL-ul=-65dBm RXL-SUB-ul=-47dBm RX -FULL-ul=0 RXQ-SUB-ul=0 BS_POWER=0 L1_MS_PWR= 0dBm L1_FPC=0 L1_TA=0 RXL-FULL-dl=-47dBm RXL-SUB-dl=-47dB RXQ-FULL-dl=0 RXQ-SUB-dl=0 NUM_NEIGH=7 <0003> osmo_msc.c:105 CIPHERING MODE COMPLETE dbi access time 0ms dbi access time 69ms <0001> gsm_04_08.c:191 (bts 1 trx 0 ts 0 pd 05) Sending 0x02 to MS. <0001> gsm_04_08.c:191 (bts 1 trx 0 ts 0 pd 05) Sending 0x32 to MS. dbi access time 66ms dbi access time 0ms dbi access time 0ms <0003> gsm_04_08.c:1249 TX APPLICATION INFO id=0x00, len=4 <0001> gsm_04_08.c:191 (bts 1 trx 0 ts 0 pd 06) Sending 0x38 to MS. dbi access time 0ms Stalled 140ms the total time that openbsc was stalling is 555ms in this case. there are only 4 subscribers in hlr and counter writing is disabled. is there any trick to make database access faster? speeding up the db access does not solve the problem. an async db access is one solution, but there is other code at openbsc that might require some time. (e.g. handling of many measurement reports) one solution is to have an own thread for the audio processing. this thread must access different interfaces independently from the rest of the openbsc code: - RTP sockets - MNCC socket - TRAU sockets of E1 timeslots MNCC socket could be split into two sockets: one for signalling, one for audio traffic. this way it is not required to use queues and signals between main thread and audio thread. a problem in case of multithreading is osmo_select_main(). it uses global list of file descriptors and global rb-tree for timers. one solution would be having multiple lists and trees for each thread id. this way it is not required to change timer and file descriptor api. another solution could be a seperate process, which handles audio only. i don't really like a sepeate process, since it requires some interface to openbsc and makes everything more complex. even though i don't like threads, multithreading seems to be the best solution to me at the moment. was there any effort to solve the problem or to handle audio? are there any suggestions about it? regard, andreas

2 2

SGSN Crash Report
by Caleb Pal 24 Jun '13

24 Jun '13

Hello, I just updated my machine with the latest OpenBSC code from git. In the past under heavy data load (EDGE), the BTS would crash. Now, after updating the code, the BTS stays up, but the SGSN crashes. Below are a few details about my setup and debugging output. BTS: NanoBTS 165BU 1900 PC: Atom Z530 1GB ram, Running Debian (Wheezy) Output from gdb: <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=52 <0011> gprs_bssgp.c:376 BSSGP TLLI=0xce3dde6f Rx UPLINK-UNITDATA <0012> gprs_llc.c:502 LLC SAPI=3 C FCS=0xc3123cCMD=UI DATA <0011> gprs_bssgp.c:376 BSSGP TLLI=0xce3dde6f Rx UPLINK-UNITDATA <0012> gprs_llc.c:502 LLC SAPI=3 C FCS=0xac6064CMD=UI DATA <0011> gprs_bssgp.c:376 BSSGP TLLI=0xce3dde6f Rx UPLINK-UNITDATA <0012> gprs_llc.c:502 LLC SAPI=3 C FCS=0xdc7cc7CMD=UI DATA <0011> gprs_bssgp.c:376 BSSGP TLLI=0xce3dde6f Rx UPLINK-UNITDATA <0012> gprs_llc.c:502 LLC SAPI=3 C FCS=0x18af79CMD=UI DATA <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <0011> gprs_bssgp.c:376 BSSGP TLLI=0xce3dde6f Rx UPLINK-UNITDATA <0012> gprs_llc.c:502 LLC SAPI=3 C FCS=0x84caf1CMD=UI DATA <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <0011> gprs_bssgp.c:376 BSSGP TLLI=0xce3dde6f Rx UPLINK-UNITDATA <0012> gprs_llc.c:502 LLC SAPI=3 C FCS=0xf1f6b6CMD=UI DATA <0011> gprs_bssgp.c:376 BSSGP TLLI=0xce3dde6f Rx UPLINK-UNITDATA <0012> gprs_llc.c:502 LLC SAPI=3 C FCS=0xd9e63bCMD=UI DATA <0011> gprs_bssgp.c:376 BSSGP TLLI=0xce3dde6f Rx UPLINK-UNITDATA <0012> gprs_llc.c:502 LLC SAPI=3 C FCS=0xbadc11CMD=UI DATA <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=64 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=197 <0011> gprs_bssgp.c:376 BSSGP TLLI=0xce3dde6f Rx UPLINK-UNITDATA <0012> gprs_llc.c:502 LLC SAPI=3 C FCS=0xb7e07cCMD=UI DATA <0011> gprs_bssgp.c:376 BSSGP TLLI=0xce3dde6f Rx UPLINK-UNITDATA <0012> gprs_llc.c:502 LLC SAPI=3 C FCS=0x987e00CMD=UI DATA <0011> gprs_bssgp.c:376 BSSGP TLLI=0xce3dde6f Rx UPLINK-UNITDATA <0012> gprs_llc.c:502 LLC SAPI=3 C FCS=0xf386aaCMD=UI DATA <0011> gprs_bssgp.c:376 BSSGP TLLI=0xce3dde6f Rx UPLINK-UNITDATA <0012> gprs_llc.c:502 LLC SAPI=3 C FCS=0x38700eCMD=UI DATA <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <0011> gprs_bssgp.c:376 BSSGP TLLI=0xce3dde6f Rx UPLINK-UNITDATA <0012> gprs_llc.c:502 LLC SAPI=3 C FCS=0x62743eCMD=UI DATA <0011> gprs_bssgp.c:376 BSSGP TLLI=0xce3dde6f Rx UPLINK-UNITDATA <0012> gprs_llc.c:502 LLC SAPI=3 C FCS=0x1cba00CMD=UI DATA <0011> gprs_bssgp.c:376 BSSGP TLLI=0xce3dde6f Rx UPLINK-UNITDATA <0012> gprs_llc.c:502 LLC SAPI=3 C FCS=0x6e4346CMD=UI DATA <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <0011> gprs_bssgp.c:376 BSSGP TLLI=0xce3dde6f Rx UPLINK-UNITDATA <0012> gprs_llc.c:502 LLC SAPI=3 C FCS=0xb20578CMD=UI DATA <0011> gprs_bssgp.c:376 BSSGP TLLI=0xce3dde6f Rx UPLINK-UNITDATA <0012> gprs_llc.c:502 LLC SAPI=3 C FCS=0x49f5d0CMD=UI DATA <0011> gprs_bssgp.c:376 BSSGP TLLI=0xce3dde6f Rx UPLINK-UNITDATA <0012> gprs_llc.c:502 LLC SAPI=3 C FCS=0x760e46CMD=UI DATA <0011> gprs_bssgp.c:376 BSSGP TLLI=0xce3dde6f Rx UPLINK-UNITDATA <0012> gprs_llc.c:502 LLC SAPI=3 C FCS=0xc839b5CMD=UI DATA <0011> gprs_bssgp.c:376 BSSGP TLLI=0xce3dde6f Rx UPLINK-UNITDATA <0012> gprs_llc.c:502 LLC SAPI=3 C FCS=0xacd5a3CMD=UI DATA <0011> gprs_bssgp.c:376 BSSGP TLLI=0xce3dde6f Rx UPLINK-UNITDATA <0012> gprs_llc.c:502 LLC SAPI=3 C FCS=0xdaf317CMD=UI DATA <0011> gprs_bssgp.c:747 BSSGP BVCI=3 Rx Flow Control BVC <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <0011> gprs_bssgp.c:376 BSSGP TLLI=0xce3dde6f Rx UPLINK-UNITDATA <0012> gprs_llc.c:502 LLC SAPI=3 C FCS=0x7d7a91CMD=UI DATA <0011> gprs_bssgp.c:376 BSSGP TLLI=0xce3dde6f Rx UPLINK-UNITDATA <0012> gprs_llc.c:502 LLC SAPI=3 C FCS=0x1eef1aCMD=UI DATA <0011> gprs_bssgp.c:376 BSSGP TLLI=0xce3dde6f Rx UPLINK-UNITDATA <0012> gprs_llc.c:502 LLC SAPI=3 C FCS=0xd83b65CMD=UI DATA <0011> gprs_bssgp.c:376 BSSGP TLLI=0xce3dde6f Rx UPLINK-UNITDATA <0012> gprs_llc.c:502 LLC SAPI=3 C FCS=0xf6a775CMD=UI DATA <0011> gprs_bssgp.c:376 BSSGP TLLI=0xce3dde6f Rx UPLINK-UNITDATA <0012> gprs_llc.c:502 LLC SAPI=3 C FCS=0x855a58CMD=UI DATA <0011> gprs_bssgp.c:376 BSSGP TLLI=0xce3dde6f Rx UPLINK-UNITDATA <0012> gprs_llc.c:502 LLC SAPI=3 C FCS=0x18aa6fCMD=UI DATA <0011> gprs_bssgp.c:376 BSSGP TLLI=0xce3dde6f Rx UPLINK-UNITDATA <0012> gprs_llc.c:502 LLC SAPI=3 C FCS=0x167b76CMD=UI DATA <0011> gprs_bssgp.c:376 BSSGP TLLI=0xce3dde6f Rx UPLINK-UNITDATA <0012> gprs_llc.c:502 LLC SAPI=3 C FCS=0x55d812CMD=UI DATA <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 <000f> sgsn_libgtp.c:425 GTP DATA IND from GGSN, length=1500 Program received signal SIGFPE, Arithmetic exception. fc_queue_timer_cfg (fc=fc@entry=0x808def0) at gprs_bssgp.c:596 596 msecs = (fcqe->llc_pdu_len * 1000) / fc->bucket_leak_rate; (gdb) OpenBSC Console Output: Fri Jun 21 16:36:19 2013 <0005> abis_nm.c:315 OC=BASEBAND-TRANSCEIVER(04) INST=(00,00,ff) Failure Event Report Type=quality of service failure Severity=warning level failure Probable cause= 03 05 01 Additional Text=UDP overflow alarm on port 23000 (1 occurences) Fri Jun 21 16:36:20 2013 <0005> abis_nm.c:315 OC=BASEBAND-TRANSCEIVER(04) INST=(00,00,ff) Failure Event Report Type=quality of service failure Severity=warning level failure Probable cause= 03 05 01 Additional Text=UDP overflow alarm on port 23000 (1 occurences) Fri Jun 21 16:38:00 2013 <0005> abis_nm.c:315 OC=GPRS-NSVC(f2) INST=(00,00,ff) STATE CHG: OP_STATE=Disabled AVAIL=Failed(01) Fri Jun 21 16:38:00 2013 <0005> abis_nm.c:315 OC=GPRS-NSE(f0) INST=(00,ff,ff) STATE CHG: OP_STATE=Disabled AVAIL=Dependency(05) Fri Jun 21 16:38:00 2013 <0005> abis_nm.c:1757 OC=GPRS-NSE(f0) INST=(00,ff,ff) Sending OPSTART Fri Jun 21 16:38:00 2013 <0005> abis_nm.c:315 OC=GPRS-CELL(f1) INST=(00,00,ff) STATE CHG: OP_STATE=Disabled AVAIL=Dependency(05) Fri Jun 21 16:38:00 2013 <0005> abis_nm.c:1757 OC=GPRS-CELL(f1) INST=(00,00,ff) Sending OPSTART Fri Jun 21 16:38:00 2013 <0005> abis_nm.c:315 OC=GPRS-NSE(f0) INST=(00,ff,ff) STATE CHG: OP_STATE=Disabled AVAIL=Dependency(05) Fri Jun 21 16:38:00 2013 <0005> abis_nm.c:315 OC=GPRS-CELL(f1) INST=(00,00,ff) STATE CHG: OP_STATE=Disabled AVAIL=Dependency(05) Fri Jun 21 16:38:00 2013 <0005> abis_nm.c:2418 OC=GPRS-NSE(f0) INST=(00,ff,ff) IPACCESS(0xf6): SET ATTR ACK Fri Jun 21 16:38:00 2013 <0005> abis_nm.c:2418 OC=GPRS-CELL(f1) INST=(00,00,ff) IPACCESS(0xf6): SET ATTR ACK Fri Jun 21 16:38:42 2013 <0005> abis_nm.c:315 OC=GPRS-NSVC(f2) INST=(00,00,ff) Failure Event Report Type=communication failure Severity=critical failure Probable cause= 03 03 11 Additional Text= Let me know if you need any further information. Regards, Caleb

4 4

NanoBTS 139 PCS1900 for sale
by Pierre Kim 23 Jun '13

23 Jun '13

Hello, I have a nanoBTS 139 unit for sale. It is from the united states, it operates on PCS1900. I'd sell it for 1200 euro. Please contact me if you are interested. Thank you.

1 0

[PATCH] BSSGP: prevent divide-by-zero in flow control
by Harald Welte 22 Jun '13

22 Jun '13

If the BTS tells us to not send any data at all anymore (bucket leak rate of 0 bits per second), then we should respect this and not run into a divide-by-zero. However, as this indicates complete overload, we print a log message to that regard. --- src/gb/gprs_bssgp.c | 43 +++++++++++++++++++++++++++++++++---------- 1 file changed, 33 insertions(+), 10 deletions(-) diff --git a/src/gb/gprs_bssgp.c b/src/gb/gprs_bssgp.c index e41c7ef..5ef1887 100644 --- a/src/gb/gprs_bssgp.c +++ b/src/gb/gprs_bssgp.c @@ -590,16 +590,20 @@ static int fc_queue_timer_cfg(struct bssgp_flow_control *fc) fcqe = llist_entry(&fc->queue.next, struct bssgp_fc_queue_element, list); - /* Calculate the point in time at which we will have leaked - * a sufficient number of bytes from the bucket to transmit - * the first PDU in the queue */ - msecs = (fcqe->llc_pdu_len * 1000) / fc->bucket_leak_rate; - /* FIXME: add that time to fc->time_last_pdu and subtract it from - * current time */ - - fc->timer.data = fc; - fc->timer.cb = &fc_timer_cb; - osmo_timer_schedule(&fc->timer, msecs / 1000, (msecs % 1000) * 1000); + if (fc->bucket_leak_rate != 0) { + /* Calculate the point in time at which we will have leaked + * a sufficient number of bytes from the bucket to transmit + * the first PDU in the queue */ + msecs = (fcqe->llc_pdu_len * 1000) / fc->bucket_leak_rate; + /* FIXME: add that time to fc->time_last_pdu and subtract it from + * current time */ + fc->timer.data = fc; + fc->timer.cb = &fc_timer_cb; + osmo_timer_schedule(&fc->timer, msecs / 1000, (msecs % 1000) * 1000); + } else { + /* If the PCU is telling us to not send any more data at all, + * there's no point starting a timer. */ + } return 0; } @@ -742,6 +746,8 @@ int bssgp_fc_ms_init(struct bssgp_flow_control *fc_ms, uint16_t bvci, static int bssgp_rx_fc_bvc(struct msgb *msg, struct tlv_parsed *tp, struct bssgp_bvc_ctx *bctx) { + uint32_t old_leak_rate = bctx->fc->bucket_leak_rate; + uint32_t old_r_def_ms = bctx->r_default_ms; DEBUGP(DBSSGP, "BSSGP BVCI=%u Rx Flow Control BVC\n", bctx->bvci); @@ -769,6 +775,23 @@ static int bssgp_rx_fc_bvc(struct msgb *msg, struct tlv_parsed *tp, bctx->r_default_ms = 100 * ntohs(*(uint16_t *)TLVP_VAL(tp, BSSGP_IE_R_DEFAULT_MS)) / 8; + if (old_leak_rate != 0 && bctx->fc->bucket_leak_rate == 0) + LOGP(DBSSGP, LOGL_NOTICE, "BSS instructs us to bucket leak " + "rate of 0, stopping all DL GPRS!\n"); + else if (old_leak_rate == 0 && bctx->fc->bucket_leak_rate != 0) + LOGP(DBSSGP, LOGL_NOTICE, "BSS instructs us to bucket leak " + "rate of != 0, restarting all DL GPRS!\n"); + + if (old_r_def_ms != 0 && bctx->r_default_ms == 0) + LOGP(DBSSGP, LOGL_NOTICE, "BSS instructs us to MS default " + "bucket leak rate of 0, stopping DL GPRS!\n"); + else if (old_r_def_ms == 0 && bctx->r_default_ms != 0) + LOGP(DBSSGP, LOGL_NOTICE, "BSS instructs us to MS default " + "bucket leak rate != 0, restarting DL GPRS!\n"); + + /* reconfigure the timer for flow control based on new values */ + fc_queue_timer_cfg(bctx->fc); + /* Send FLOW_CONTROL_BVC_ACK */ return bssgp_tx_fc_bvc_ack(msgb_nsei(msg), *TLVP_VAL(tp, BSSGP_IE_TAG), msgb_bvci(msg)); -- 1.8.3.1 --wac7ysb48OaltWcw--

1 0

OpenBTS with GPRS....trouble with SGSN and PCU
by altaf sk 13 Jun '13

13 Jun '13

Hello everybody. I was successful in running the calypso BTS by using the openBTS (without gprs). Now I am trying to setup a GPRS N/w with the guide provided at http://wush.net/trac/rangepublic/wiki/GPRS and by using the same Calypso BTS. Want to know whether if this can work out. If not I want to do some minimal implementation (GPRS attach or just activate a PDP context). I followed the tutorial and I am here with logs from PCU and SGSN. LOG from Osmo-PCU # ./osmo-pcu -n 06 -m 234 <0001> pcu_l1_if.cpp:375 BTS available <0001> pcu_l1_if.cpp:91 Sending activate request: trx=0 ts=6 <0001> pcu_l1_if.cpp:502 PDCH: trx=0 ts=6 <0001> pcu_l1_if.cpp:91 Sending activate request: trx=0 ts=7 <0001> pcu_l1_if.cpp:502 PDCH: trx=0 ts=7 <0009> gprs_bssgp_pcu.cpp:508 NS-VC 4 is unblocked. <0008> gprs_bssgp_pcu.cpp:549 Sending reset on BVCI 0 <0008> gprs_bssgp_pcu.cpp:557 Sending reset on BVCI 7 <0008> gprs_bssgp_pcu.cpp:565 Sending unblock on BVCI 7 <0001> pcu_l1_if.cpp:296 RACH request received: sapi=1 qta=1, ra=120, fn=961674 <0002> gprs_rlcmac_data.cpp:1901 Got IMM.ASS confirm, but rest octets do not start with bit sequence 'HH01' (Packet Downlink Assignment) 0002> gprs_rlcmac_data.cpp:564 TBF T3169 timeout during transsmission <0002> gprs_rlcmac_data.cpp:82 - Assignment was on CCCH <0002> gprs_rlcmac_data.cpp:88 - No uplink data received yet <0001> pcu_l1_if.cpp:296 RACH request received: sapi=1 qta=1, ra=124, fn=963005 <0002> gprs_rlcmac_data.cpp:1901 Got IMM.ASS confirm, but rest octets do not start with bit sequence 'HH01' (Packet DownlinkAssignment) 0002> gprs_rlcmac_data.cpp:564 TBF T3169 timeout during transsmission <0002> gprs_rlcmac_data.cpp:82 - Assignment was on CCCH <0002> gprs_rlcmac_data.cpp:88 - No uplink data received yet After a successful GSM attach procedure the phone is accessing the BTS on RACH for a GPRS attach. This set of statements repeats as long as the phone trying to do a GPRS attach send requests on RACH. It seems like the phone BTS receives RACH and a channel is assigned (IMM ASS, I can see this TBF assignment in Wireshark), but I doubt whether this IMM ASS has reached the phone that is trying to GPRS attach. Log from SGSN #./osmo-sgsn <0010> gprs_ns.c:171 NSVCI=65534 Creating NS-VC <0010> gprs_ns.c:171 NSVCI=65535 Creating NS-VC <0010> gprs_ns.c:806 Creating NS-VC for BSS at 192.168.111.144:5948 <0010> gprs_ns.c:679 NSEI=65535 Rx NS RESET (NSVCI=0, cause=O&M intervention) <0010> gprs_ns.c:538 NSEI=8 Tx NS RESET ACK (NSVCI=4) <0010> gprs_ns.c:679 NSEI=4 Rx NS RESET (NSVCI=8, cause=PDU not compatible with protocol state) <0010> gprs_ns.c:538 NSEI=8 Tx NS RESET ACK (NSVCI=4) <0010> gprs_ns.c:865 NSEI=8 Rx NS UNBLOCK <0010> gprs_ns.c:865 NSEI=8 Rx NS UNBLOCK <0011> gprs_bssgp.c:249 BSSGP BVCI=0 Rx RESET cause=O&M intervention <0011> gprs_bssgp.c:249 BSSGP BVCI=7 Rx RESET cause=O&M intervention <0011> gprs_bssgp.c:272 Cell 234-6-1000-0 CI 0 on BVCI 7 <0011> gprs_bssgp.c:344 BSSGP BVCI=7 Rx BVC-UNBLOCK <0011> gprs_bssgp.c:747 BSSGP BVCI=7 Rx Flow Control BVC <0011> gprs_bssgp.c:747 BSSGP BVCI=7 Rx Flow Control BVC and The last statement repeats......... the statement Cell 234-6-1000-0 CI 0 on BVCI 7 The RAI and Cell ID are 0 and 0.... But when I read the code gprs_bssgp.c it says these parameters will be received from BSS. If I set these parameters in OpenBTS.db similar to LAC=RAC but still there is no effect. I am running ./ggsn, ./osmo-sgsn, ./osmo-pcu, ./openbts Is osmo-nitb needed along with SGSN and PCU. I fail to do GPRS attcach in this situation. Can someone please give your comments and guide me with some suggestions. regards, Altaf

4 12

osmocom-bb: [PATCH] Makefile.am: Use AM_CPPFLAGS
by Alexander Huemer 12 Jun '13

12 Jun '13

This is the patch for osmocom-bb

2 2

Updates for automake 1.13
by Alexander Huemer 11 Jun '13

11 Jun '13

Hi, automake 1.13 appeared on my system lately. As with every version bump of auto* some directives are no more 'en vogue'. This time it's INCLUDES in Makefile.am files. AM_CPPFLAGS should be used now, INCLUDES will be removed in some future release. I created trivial patches for the osmo projects using autotools of which I already had clones. These are: libosmo-abis libosmocore libosmo-dsp libosmo-sccp openbsc osmo-bts osmocom-bb osmo-gmr The patches are for the master branch of the respective repository, current HEAD. I'll send the patches individually. Feel free to apply the patches if they seem useful. Otherwise, feedback is appreciated. Kind regards, -Alexander Huemer

2 2

osmo-gmr: [PATCH] Makefile.am: Use AM_CPPFLAGS
by Alexander Huemer 11 Jun '13

11 Jun '13

This is the patch for osmo-gmr

1 1

osmo-bts: [PATCH] Makefile.am: Use AM_CPPFLAGS
by Alexander Huemer 11 Jun '13

11 Jun '13

This is the patch for osmo-bts

1 1

openbsc: [PATCH] Makefile.am: Use AM_CPPFLAGS
by Alexander Huemer 11 Jun '13

11 Jun '13

This is the patch for openbsc

1 1

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