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Sipos Csaba sipos.csaba at kvk.uni-obuda.huDear Tom and List, I am in the process of updating the wiki for USRP radios, therefor I am recompiling everything Osmocom related with the latest master branches. I managed to setup the system, the CS services are working just fine (only fullrate and SMS is tested yet), but the GPRS service seems to be not working. I am using my well tested setup on 1800MHz (ARFCN 885), with duplex filters. On the Osmo-BTS end I get this message: <0007> l1sap.c:957 RACH for packet access <0007> l1sap.c:957 RACH for packet access <0007> l1sap.c:957 RACH for packet access <0007> l1sap.c:957 RACH for packet access <0007> l1sap.c:957 RACH for packet access <0007> l1sap.c:957 RACH for packet access <0007> l1sap.c:957 RACH for packet access <0007> l1sap.c:957 RACH for packet access <0007> l1sap.c:957 RACH for packet access <0007> l1sap.c:957 RACH for packet access <0007> l1sap.c:957 RACH for packet access <0007> l1sap.c:957 RACH for packet access <0007> l1sap.c:957 RACH for packet access <0007> l1sap.c:957 RACH for packet access <0007> l1sap.c:957 RACH for packet access Osmo-PCU in the same time shows the following (repeatedly): Thu Sep 8 12:48:30 2016 DRLCMAC <0002> tbf.cpp:819 TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=WAIT ASSIGN) timer 3169 expired. Thu Sep 8 12:48:30 2016 DRLCMAC <0002> tbf.cpp:874 TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=WAIT ASSIGN) T3169 timeout during transsmission Thu Sep 8 12:48:30 2016 DRLCMAC <0002> tbf.cpp:893 - Assignment was on CCCH Thu Sep 8 12:48:30 2016 DRLCMAC <0002> tbf.cpp:899 - No uplink data received yet Thu Sep 8 12:48:30 2016 DRLCMAC <0002> tbf.cpp:879 TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=WAIT ASSIGN) will be freed due to timeout Thu Sep 8 12:48:30 2016 DRLCMAC <0002> tbf.cpp:334 TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=WAIT ASSIGN) free Thu Sep 8 12:48:30 2016 DRLCMAC <0002> bts.cpp:1501 PDCH(TS 6, TRX 0): Detaching TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=WAIT ASSIGN), 0 TBFs, USFs = 00, TFIs = 00000000. Thu Sep 8 12:48:30 2016 DRLCMAC <0002> gprs_ms.cpp:323 Detaching TBF from MS object, TLLI = 0x00000000, TBF = TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=WAIT ASSIGN) Thu Sep 8 12:48:30 2016 DRLCMAC <0002> gprs_ms.cpp:140 Destroying MS object, TLLI = 0x00000000 Thu Sep 8 12:48:30 2016 DRLCMAC <0002> tbf.cpp:355 ********** TBF ends here ********** Thu Sep 8 12:48:31 2016 DRLCMAC <0002> bts.cpp:486 MS requests UL TBF on RACH, so we provide one: Thu Sep 8 12:48:31 2016 DRLCMAC <0002> tbf.cpp:672 ********** TBF starts here ********** Thu Sep 8 12:48:31 2016 DRLCMAC <0002> tbf.cpp:674 Allocating UL TBF: MS_CLASS=0/0 Thu Sep 8 12:48:31 2016 DRLCMAC <0002> gprs_ms.cpp:114 Creating MS object, TLLI = 0x00000000 Thu Sep 8 12:48:31 2016 DRLCMAC <0002> bts.cpp:413 Searching for first unallocated TFI: TRX=0 Thu Sep 8 12:48:31 2016 DRLCMAC <0002> bts.cpp:423 Found TFI=0. Thu Sep 8 12:48:31 2016 DRLCMAC <0002> gprs_rlcmac_ts_alloc.cpp:525 Slot Allocation (Algorithm B) for unknown class (assuming 12) Thu Sep 8 12:48:31 2016 DRLCMAC <0002> gprs_rlcmac_ts_alloc.cpp:560 - Rx=4 Tx=4 Sum Rx+Tx=5 Tta=2 Ttb=1 Tra=2 Trb=1 Type=1 Thu Sep 8 12:48:31 2016 DRLCMAC <0002> gprs_rlcmac_ts_alloc.cpp:157 - Skipping TS 0, because not enabled Thu Sep 8 12:48:31 2016 DRLCMAC <0002> gprs_rlcmac_ts_alloc.cpp:157 - Skipping TS 1, because not enabled Thu Sep 8 12:48:31 2016 DRLCMAC <0002> gprs_rlcmac_ts_alloc.cpp:157 - Skipping TS 2, because not enabled Thu Sep 8 12:48:31 2016 DRLCMAC <0002> gprs_rlcmac_ts_alloc.cpp:157 - Skipping TS 3, because not enabled Thu Sep 8 12:48:31 2016 DRLCMAC <0002> gprs_rlcmac_ts_alloc.cpp:579 - Possible DL/UL slots: (TS=0)"....CCCC"(TS=7) Thu Sep 8 12:48:31 2016 DRLCMAC <0002> gprs_rlcmac_ts_alloc.cpp:940 - Selected UL slots: (TS=0)"......U."(TS=7), single Thu Sep 8 12:48:31 2016 DRLCMAC <0002> gprs_rlcmac_ts_alloc.cpp:966 Using single slot at TS 6 for UL Thu Sep 8 12:48:31 2016 DRLCMAC <0002> gprs_rlcmac_ts_alloc.cpp:990 - Reserved DL/UL slots: (TS=0)"......C."(TS=7) Thu Sep 8 12:48:31 2016 DRLCMAC <0002> gprs_rlcmac_ts_alloc.cpp:1017 - Assigning UL TS 6 Thu Sep 8 12:48:31 2016 DRLCMAC <0002> bts.cpp:1481 PDCH(TS 6, TRX 0): Attaching TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=NULL), 1 TBFs, USFs = 01, TFIs = 00000001. Thu Sep 8 12:48:31 2016 DRLCMAC <0002> tbf.cpp:385 - Setting Control TS 6 Thu Sep 8 12:48:31 2016 DRLCMAC <0002> gprs_ms.cpp:267 Attaching TBF to MS object, TLLI = 0x00000000, TBF = TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=NULL) Thu Sep 8 12:48:31 2016 DRLCMAC <0002> tbf.cpp:625 Allocated TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=NULL): trx = 0, ul_slots = 40, dl_slots = 00 Thu Sep 8 12:48:31 2016 DRLCMAC <0002> bts.cpp:291 TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=NULL) changes state from NULL to FLOW Thu Sep 8 12:48:31 2016 DRLCMAC <0002> tbf.cpp:409 TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=FLOW) starting timer 3169. Thu Sep 8 12:48:31 2016 DRLCMAC <0002> bts.cpp:530 TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=FLOW) [UPLINK] START Thu Sep 8 12:48:31 2016 DRLCMAC <0002> bts.cpp:534 TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=FLOW) RX: [PCU <- BTS] RACH qbit-ta=0 ra=0x78, Fn=1011875 (27,35,7) Thu Sep 8 12:48:31 2016 DRLCMAC <0002> bts.cpp:536 TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=FLOW) TX: START Immediate Assignment Uplink (AGCH) Thu Sep 8 12:48:31 2016 DRLCMAC <0002> bts.cpp:549 - TRX=0 (885) TS=6 TA=0 TSC=7 TFI=0 USF=0 Thu Sep 8 12:48:31 2016 DRLCMAC <0002> bts.cpp:291 TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=FLOW) changes state from FLOW to WAIT ASSIGN Thu Sep 8 12:48:33 2016 DBSSGP <0009> gprs_bssgp_pcu.cpp:792 Sending flow control info on BVCI 2 Thu Sep 8 12:48:33 2016 DBSSGP <0009> gprs_bssgp_pcu.cpp:705 Computed BVC leak rate = 10000, num_pdch = 4, cs = CS-4 Thu Sep 8 12:48:33 2016 DBSSGP <0009> gprs_bssgp_pcu.cpp:729 Computed MS default leak rate = 10000, ms_num_pdch = 4, cs = CS-4 Thu Sep 8 12:48:33 2016 DBSSGP <0009> gprs_bssgp_pcu.cpp:758 Sending FLOW CONTROL BVC, Bmax = 100000, R = 10000, Bmax_MS = 100000, R_MS = 10000, avg_dly = 0 Thu Sep 8 12:48:33 2016 DBSSGP <0009> gprs_bssgp_pcu.cpp:385 rx BVCI_PTP gprs_bssgp_rx_ptp Thu Sep 8 12:48:33 2016 DBSSGP <0009> gprs_bssgp_pcu.cpp:245 rx BSSGP_PDUT_FLOW_CONTROL_BVC_ACK Thu Sep 8 12:48:36 2016 DRLCMAC <0002> tbf.cpp:819 TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=WAIT ASSIGN) timer 3169 expired. Thu Sep 8 12:48:36 2016 DRLCMAC <0002> tbf.cpp:874 TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=WAIT ASSIGN) T3169 timeout during transsmission Thu Sep 8 12:48:36 2016 DRLCMAC <0002> tbf.cpp:893 - Assignment was on CCCH Thu Sep 8 12:48:36 2016 DRLCMAC <0002> tbf.cpp:899 - No uplink data received yet Thu Sep 8 12:48:36 2016 DRLCMAC <0002> tbf.cpp:879 TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=WAIT ASSIGN) will be freed due to timeout Thu Sep 8 12:48:36 2016 DRLCMAC <0002> tbf.cpp:334 TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=WAIT ASSIGN) free Thu Sep 8 12:48:36 2016 DRLCMAC <0002> bts.cpp:1501 PDCH(TS 6, TRX 0): Detaching TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=WAIT ASSIGN), 0 TBFs, USFs = 00, TFIs = 00000000. Thu Sep 8 12:48:36 2016 DRLCMAC <0002> gprs_ms.cpp:323 Detaching TBF from MS object, TLLI = 0x00000000, TBF = TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=WAIT ASSIGN) Thu Sep 8 12:48:36 2016 DRLCMAC <0002> gprs_ms.cpp:140 Destroying MS object, TLLI = 0x00000000 Thu Sep 8 12:48:36 2016 DRLCMAC <0002> tbf.cpp:355 ********** TBF ends here ********** Thu Sep 8 12:48:36 2016 DRLCMAC <0002> bts.cpp:486 MS requests UL TBF on RACH, so we provide one: Thu Sep 8 12:48:36 2016 DRLCMAC <0002> tbf.cpp:672 ********** TBF starts here ********** Thu Sep 8 12:48:36 2016 DRLCMAC <0002> tbf.cpp:674 Allocating UL TBF: MS_CLASS=0/0 Thu Sep 8 12:48:36 2016 DRLCMAC <0002> gprs_ms.cpp:114 Creating MS object, TLLI = 0x00000000 Thu Sep 8 12:48:36 2016 DRLCMAC <0002> bts.cpp:413 Searching for first unallocated TFI: TRX=0 Thu Sep 8 12:48:36 2016 DRLCMAC <0002> bts.cpp:423 Found TFI=0. Thu Sep 8 12:48:36 2016 DRLCMAC <0002> gprs_rlcmac_ts_alloc.cpp:525 Slot Allocation (Algorithm B) for unknown class (assuming 12) Thu Sep 8 12:48:36 2016 DRLCMAC <0002> gprs_rlcmac_ts_alloc.cpp:560 - Rx=4 Tx=4 Sum Rx+Tx=5 Tta=2 Ttb=1 Tra=2 Trb=1 Type=1 Thu Sep 8 12:48:36 2016 DRLCMAC <0002> gprs_rlcmac_ts_alloc.cpp:157 - Skipping TS 0, because not enabled Thu Sep 8 12:48:36 2016 DRLCMAC <0002> gprs_rlcmac_ts_alloc.cpp:157 - Skipping TS 1, because not enabled Thu Sep 8 12:48:36 2016 DRLCMAC <0002> gprs_rlcmac_ts_alloc.cpp:157 - Skipping TS 2, because not enabled Thu Sep 8 12:48:36 2016 DRLCMAC <0002> gprs_rlcmac_ts_alloc.cpp:157 - Skipping TS 3, because not enabled Thu Sep 8 12:48:36 2016 DRLCMAC <0002> gprs_rlcmac_ts_alloc.cpp:579 - Possible DL/UL slots: (TS=0)"....CCCC"(TS=7) Thu Sep 8 12:48:36 2016 DRLCMAC <0002> gprs_rlcmac_ts_alloc.cpp:940 - Selected UL slots: (TS=0)"......U."(TS=7), single Thu Sep 8 12:48:36 2016 DRLCMAC <0002> gprs_rlcmac_ts_alloc.cpp:966 Using single slot at TS 6 for UL Thu Sep 8 12:48:36 2016 DRLCMAC <0002> gprs_rlcmac_ts_alloc.cpp:990 - Reserved DL/UL slots: (TS=0)"......C."(TS=7) Thu Sep 8 12:48:36 2016 DRLCMAC <0002> gprs_rlcmac_ts_alloc.cpp:1017 - Assigning UL TS 6 Thu Sep 8 12:48:36 2016 DRLCMAC <0002> bts.cpp:1481 PDCH(TS 6, TRX 0): Attaching TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=NULL), 1 TBFs, USFs = 01, TFIs = 00000001. Thu Sep 8 12:48:36 2016 DRLCMAC <0002> tbf.cpp:385 - Setting Control TS 6 Thu Sep 8 12:48:36 2016 DRLCMAC <0002> gprs_ms.cpp:267 Attaching TBF to MS object, TLLI = 0x00000000, TBF = TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=NULL) Thu Sep 8 12:48:36 2016 DRLCMAC <0002> tbf.cpp:625 Allocated TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=NULL): trx = 0, ul_slots = 40, dl_slots = 00 Thu Sep 8 12:48:36 2016 DRLCMAC <0002> bts.cpp:291 TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=NULL) changes state from NULL to FLOW Thu Sep 8 12:48:36 2016 DRLCMAC <0002> tbf.cpp:409 TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=FLOW) starting timer 3169. Thu Sep 8 12:48:36 2016 DRLCMAC <0002> bts.cpp:530 TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=FLOW) [UPLINK] START Thu Sep 8 12:48:36 2016 DRLCMAC <0002> bts.cpp:534 TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=FLOW) RX: [PCU <- BTS] RACH qbit-ta=0 ra=0x79, Fn=1013049 (27,36,11) Thu Sep 8 12:48:36 2016 DRLCMAC <0002> bts.cpp:536 TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=FLOW) TX: START Immediate Assignment Uplink (AGCH) Thu Sep 8 12:48:36 2016 DRLCMAC <0002> bts.cpp:549 - TRX=0 (885) TS=6 TA=0 TSC=7 TFI=0 USF=0 Thu Sep 8 12:48:36 2016 DRLCMAC <0002> bts.cpp:291 TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=FLOW) changes state from FLOW to WAIT ASSIGN Thu Sep 8 12:48:41 2016 DRLCMAC <0002> tbf.cpp:819 TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=WAIT ASSIGN) timer 3169 expired. Thu Sep 8 12:48:41 2016 DRLCMAC <0002> tbf.cpp:874 TBF(TFI=0 TLLI=0x00000000 DIR=UL STATE=WAIT ASSIGN) T3169 timeout during transsmission The SGSN and GGSN logs are empty. The RX gain is on 5dB, the UHD version is 3.10.0-release. Only GPRS is allowed so far on 4 PDCHs. Osmo-TRX is started with default set: Config Settings Log Level............... NOTICE Device args............. TRX Base Port........... 5700 TRX Address............. 127.0.0.1 Channels................ 1 Tx Samples-per-Symbol... 4 Rx Samples-per-Symbol... 1 EDGE support............ Disabled Reference............... Internal C0 Filler Table......... Disabled Multi-Carrier........... Disabled Diversity............... Disabled Tuning offset........... 0 RSSI to dBm offset...... 0 Swap channels........... 0 The CS call and SMS are both working fine, the audio quality is quite good. Can someone give me a hint where this goes wrong? From what I see the PRACH is failing to succeed. Regards, Csaba