I want to implement osmocombb SDR PHY project on USRP N210 in Dragon OS. for this purpose i setup Yate BTS with Blade RF in ARFCN 1. i test this bts by making call with two phone in this network. then i ran grgsm_scanner by USRP N210 and the log is >>

Found CCCH arfcn: 1 Dont capture immediate assignments, skip extract SDCCH/8 info and scan... ARFCN: 1, Freq: 935.2M, CID: 10, LAC: 1000, MCC: 432, MNC: 35, Pwr: -27 |---- Configuration: 1 CCCH, combined |---- Cell ARFCNs: 0 |---- Neighbour Cells: 1, 2, 4, 6, 9, 10, 12, 14, 17, 18, 20, 22, 25, 33, 34, 35, 36, 38, 44, 46, 47, 48, 49, 50, 57, 58, 61, 63, 66, 69, 70, 71, 72, 75, 77, 78, 80, 82, 84, 90, 91, 92, 96, 97, 98, 99, 100, 101, 106, 107, 113, 115, 116, 118, 119, 121, 122

then i run grgsm_trx, trxcon and mobile with this configuration shown below

! ! OsmocomBB example configuration for mobile application !! !

line vty no login ! gps device /dev/ttyACM0 gps baudrate default no gps enable ! no hide-default ! ms 1 layer2-socket /tmp/osmocom_l2 sap-socket /tmp/osmocom_sap stick 1 sim none network-selection-mode auto imei 000000000000000 0 imei-fixed no emergency-imsi no sms-service-center no call-waiting no auto-answer no force-rekey no clip no clir tx-power auto no simulated-delay location-updating neighbour-measurement codec full-speed prefer codec half-speed no abbrev support sms a5/1 a5/2 p-gsm e-gsm r-gsm gsm-850 dcs no pcs class-900 4 class-850 4 class-dcs 1 class-pcs 1 channel-capability sdcch+tchf+tchh full-speech-v1 full-speech-v2 half-speech-v1 min-rxlev -60 dsc-max 90 no skip-max-per-band test-sim imsi 001010412345678 ki comp128 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 no barred-access rplmn 001 01 ! io-format ti no shutdown

I enter commands

OsmocomBB> en OsmocomBB# sim t OsmocomBB# sim testcard 1

in telnet.

the log for grgsm_trx is

Copyright (C) 2016-2018 by Vadim Yanitskiy axilirator@gmail.com Copyright (C) 2017-2018 by Piotr Krysik ptrkrysik@gmail.com License GPLv2+: GNU GPL version 2 or later http://gnu.org/licenses/gpl.html This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.

[i] Init UHD Radio interface (L:0.0.0.0:6702 <-> R:127.0.0.1:6802) [INFO] [UHD] linux; GNU C++ version 11.3.0; Boost_107400; UHD_4.1.0.5-0-unknown [INFO] [USRP2] Opening a USRP2/N-Series device... [INFO] [USRP2] Current recv frame size: 1472 bytes [INFO] [USRP2] Current send frame size: 1472 bytes [i] Init CTRL interface (L:0.0.0.0:6701 <-> R:127.0.0.1:6801) [i] Init complete [i] Recv POWEROFF cmd [i] Resetting transceiver [i] Setting TA value 0 [i] Recv ECHO cmd [i] Recv POWEROFF cmd [i] Resetting transceiver [i] Setting TA value 0 [i] Recv ECHO cmd [i] Recv MEASURE cmd [i] Recv POWEROFF cmd [i] Resetting transceiver [i] Setting TA value 0 [i] Recv ECHO cmd [i] Recv SETSLOT cmd [i] Configure timeslot filter to: tn=0 [i] Recv RXTUNE cmd [i] Recv TXTUNE cmd [i] Recv POWERON CMD [i] Starting transceiver... [i] Recv POWEROFF cmd [i] Stopping transceiver... [i] Recv ECHO cmd [i] Recv SETSLOT cmd [i] Configure timeslot filter to: drop all . . .

the log for texcon is

20240812161421520 DL1C NOTICE l1ctl.c:303 FBSB timer fired for ARFCN 1 20240812161421520 DL1C NOTICE l1ctl.c:422 Received reset request (1) 20240812161421520 DSCH NOTICE sched_trx.c:191 Reset scheduler and clock counter 20240812161421520 DSCH NOTICE sched_trx.c:237 Delete TDMA timeslot #0 20240812161421520 DL1C NOTICE l1ctl.c:395 Received power measurement request (GSM900: 1 -> 1) 20240812161421521 DL1C NOTICE l1ctl.c:422 Received reset request (1) 20240812161421521 DSCH NOTICE sched_trx.c:191 Reset scheduler and clock counter 20240812161421521 DL1C NOTICE l1ctl.c:338 Received FBSB request (GSM900 1) 20240812161421521 DSCH NOTICE sched_trx.c:191 Reset scheduler and clock counter 20240812161421521 DSCH NOTICE sched_trx.c:213 Add a new TDMA timeslot #0 20240812161421521 DSCH NOTICE sched_trx.c:288 (Re)configure TDMA timeslot #0 as BCCH+CCCH 20240812161421521 DSCH NOTICE sched_trx.c:445 Activating lchan=SCH on ts=0 20240812161421521 DSCH NOTICE sched_trx.c:445 Activating lchan=BCCH on ts=0 20240812161421521 DSCH NOTICE sched_trx.c:445 Activating lchan=RACH on ts=0 20240812161421521 DSCH NOTICE sched_trx.c:445 Activating lchan=CCCH on ts=0 20240812161421606 DSCHD ERROR sched_lchan_xcch.c:99 Received bad BCCH frame (rc=-1, ber=62/456) at fn=369446 20240812161421611 DSCHD NOTICE sched_trx.c:695 Substituting lost TDMA frame 369435 on CCCH 20240812161421611 DSCHD NOTICE sched_trx.c:695 Substituting lost TDMA frame 369436 on CCCH 20240812161421611 DSCHD NOTICE sched_trx.c:695 Substituting lost TDMA frame 369437 on CCCH 20240812161421611 DSCHD NOTICE sched_trx.c:695 Substituting lost TDMA frame 369438 on CCCH 20240812161421611 DSCHD ERROR sched_lchan_xcch.c:99 Received bad CCCH frame (rc=-1, ber=456/456) at fn=369435 20240812161421611 DSCHD NOTICE sched_trx.c:695 Substituting lost TDMA frame 369439 on CCCH 20240812161421611 DSCHD NOTICE sched_trx.c:695 Substituting lost TDMA frame 369440 on CCCH 20240812161421611 DSCHD NOTICE sched_trx.c:695 Substituting lost TDMA frame 369441 on CCCH 20240812161421611 DSCHD NOTICE sched_trx.c:695 Substituting lost TDMA frame 369442 on CCCH 20240812161421611 DSCHD ERROR sched_lchan_xcch.c:99 Received bad CCCH frame (rc=-1, ber=456/456) at fn=369439 20240812161421624 DSCHD ERROR sched_lchan_xcch.c:99 Received bad CCCH frame (rc=-1, ber=59/456) at fn=369450 20240812161421684 DSCHD NOTICE sched_trx.c:695 Substituting lost TDMA frame 369456 on CCCH 20240812161421684 DSCHD NOTICE sched_trx.c:695 Substituting lost TDMA frame 369457 on CCCH 20240812161421684 DSCHD NOTICE sched_trx.c:695 Substituting lost TDMA frame 369458 on CCCH 20240812161421684 DSCHD NOTICE sched_trx.c:695 Substituting lost TDMA frame 369459 on CCCH 20240812161421684 DSCHD ERROR sched_lchan_xcch.c:99 Received bad CCCH frame (rc=-1, ber=456/456) at fn=369456 20240812161421684 DSCHD NOTICE sched_trx.c:695 Substituting lost TDMA frame 369460 on CCCH 20240812161421684 DSCHD NOTICE sched_trx.c:695 Substituting lost TDMA frame 369461 on CCCH 20240812161421684 DSCHD NOTICE sched_trx.c:695 Substituting lost TDMA frame 369462 on CCCH 20240812161421684 DSCHD NOTICE sched_trx.c:695 Substituting lost TDMA frame 369463 on CCCH 20240812161421684 DSCHD ERROR sched_lchan_xcch.c:99 Received bad CCCH frame (rc=-1, ber=456/456) at fn=369460 20240812161421698 DSCHD ERROR sched_lchan_xcch.c:99 Received bad CCCH frame (rc=-1, ber=61/456) at fn=369466 20240812161421717 DSCHD ERROR sched_lchan_xcch.c:99 Received bad CCCH frame (rc=-1, ber=65/456) at fn=369470 20240812161421777 DSCHD NOTICE sched_trx.c:695 Substituting lost TDMA frame 369476 on CCCH 20240812161421777 DSCHD NOTICE sched_trx.c:695 Substituting lost TDMA frame 369477 on CCCH 20240812161421777 DSCHD NOTICE sched_trx.c:695 Substituting lost TDMA frame 369478 on CCCH 20240812161421777 DSCHD NOTICE sched_trx.c:695 Substituting lost TDMA frame 369479 on CCCH 20240812161421777 DSCHD ERROR sched_lchan_xcch.c:99 Received bad CCCH frame (rc=-1, ber=456/456) at fn=369476 20240812161421777 DSCHD NOTICE sched_trx.c:695 Substituting lost TDMA frame 369480 on CCCH 20240812161421777 DSCHD NOTICE sched_trx.c:695 Substituting lost TDMA frame 369481 on CCCH 20240812161421777 DSCHD NOTICE sched_trx.c:695 Substituting lost TDMA frame 369482 on CCCH 20240812161421777 DSCHD NOTICE sched_trx.c:695 Substituting lost TDMA frame 369483 on CCCH 20240812161421777 DSCHD ERROR sched_lchan_xcch.c:99 Received bad CCCH frame (rc=-1, ber=456/456) at fn=369480 20240812161421790 DSCHD ERROR sched_lchan_xcch.c:99 Received bad CCCH frame (rc=-1, ber=56/456) at fn=369486 20240812161421809 DSCHD ERROR sched_lchan_xcch.c:99 Received bad CCCH frame (rc=-1, ber=58/456) at fn=369490 20240812161421874 DSCHD NOTICE sched_trx.c:695 Substituting lost TDMA frame 369501 on CCCH 20240812161421874 DSCHD NOTICE sched_trx.c:695 Substituting lost TDMA frame 369502 on CCCH 20240812161421874 DSCHD NOTICE sched_trx.c:695 Substituting lost TDMA frame 369503 on CCCH 20240812161421874 DSCHD NOTICE sched_trx.c:695 Substituting lost TDMA frame 369504 on CCCH 20240812161421874 DSCHD ERROR sched_lchan_xcch.c:99 Received bad CCCH frame (rc=-1, ber=456/456) at fn=369501 20240812161421887 DSCHD ERROR sched_lchan_xcch.c:99 Received bad CCCH frame (rc=-1, ber=62/456) at fn=369507 20240812161421906 DSCHD ERROR sched_lchan_xcch.c:99 Received bad CCCH frame (rc=-1, ber=57/456) at fn=369511 20240812161421966 DSCHD NOTICE sched_trx.c:695 Substituting lost TDMA frame 369517 on CCCH 20240812161421966 DSCHD NOTICE sched_trx.c:695 Substituting lost TDMA frame 369518 on CCCH 20240812161421966 DSCHD NOTICE sched_trx.c:695 Substituting lost TDMA frame 369519 on CCCH 20240812161421966 DSCHD NOTICE sched_trx.c:695 Substituting lost TDMA frame 369520 on CCCH 20240812161421966 DSCHD ERROR sched_lchan_xcch.c:99 Received bad CCCH frame (rc=-1, ber=456/456) at fn=369517 20240812161421966 DSCHD NOTICE sched_trx.c:695 Substituting lost TDMA frame 369521 on CCCH 20240812161421966 DSCHD NOTICE sched_trx.c:695 Substituting lost TDMA frame 369522 on CCCH 20240812161421966 DSCHD NOTICE sched_trx.c:695 Substituting lost TDMA frame 369523 on CCCH 20240812161421966 DSCHD NOTICE sched_trx.c:695 Substituting lost TDMA frame 369524 on CCCH 20240812161421966 DSCHD ERROR sched_lchan_xcch.c:99 Received bad CCCH frame (rc=-1, ber=456/456) at fn=369521 20240812161421980 DSCHD ERROR sched_lchan_xcch.c:99 Received bad CCCH frame (rc=-1, ber=62/456) at fn=369527

and the log for mobile is

<0003> gsm322.c:2919 Found signal (ARFCN 1 rxlev <=-110 (0)) <0003> gsm322.c:2933 Done with power scanning range. <0003> gsm322.c:2793 Scanning power for sticked cell. <0003> gsm322.c:2845 Found 1 frequencies. <0003> gsm322.c:2260 Scanning frequency 1 (rxlev <=-110). <0003> gsm322.c:479 Sync to ARFCN=1 rxlev=<=-110 (No sysinfo yet, ccch mode NONE) <0003> gsm322.c:2280 30 frequencies left in band 955..124 <000c> l1ctl.c:301 Dropping frame with 200 bit errors <000c> l1ctl.c:301 Dropping frame with 61 bit errors <000c> l1ctl.c:301 Dropping frame with 60 bit errors <000c> l1ctl.c:301 Dropping frame with 200 bit errors <000c> l1ctl.c:301 Dropping frame with 200 bit errors <000c> l1ctl.c:301 Dropping frame with 63 bit errors <000c> l1ctl.c:301 Dropping frame with 59 bit errors <000c> l1ctl.c:301 Dropping frame with 61 bit errors <000c> l1ctl.c:301 Dropping frame with 200 bit errors <000c> l1ctl.c:301 Dropping frame with 200 bit errors <000c> l1ctl.c:301 Dropping frame with 62 bit errors <000c> l1ctl.c:301 Dropping frame with 200 bit errors <000c> l1ctl.c:301 Dropping frame with 200 bit errors <000c> l1ctl.c:301 Dropping frame with 62 bit errors <000c> l1ctl.c:301 Dropping frame with 65 bit errors <000c> l1ctl.c:301 Dropping frame with 200 bit errors <000c> l1ctl.c:301 Dropping frame with 200 bit errors <000c> l1ctl.c:169 FBSB RESP: result=255 <0003> gsm322.c:3014 Channel sync error. <0003> gsm322.c:3019 free sysinfo ARFCN=1 <0003> gsm322.c:2748 Cell selection failed, sync timeout. <0003> gsm322.c:532 ARFCN |MCC |MNC |LAC |cell ID|forb.LA|prio |min-db |max-pwr|rx-lev <0003> gsm322.c:532 -------+-------+-------+-------+-------+-------+-------+-------+-------+------- <0003> gsm322.c:532 <0003> gsm322.c:2136 Cell search finished without result. <0003> gsm322.c:834 new state 'C6 any cell selection' -> 'C0 null' <0002> gsm322.c:3831 (ms 1) Event 'EVENT_NO_CELL_FOUND' for automatic PLMN selection in state 'A4 wait for PLMN to appear' <0003> gsm322.c:4062 (ms 1) Event 'EVENT_NO_CELL_FOUND' for Cell selection in state 'C0 null' <0003> gsm322.c:834 new state 'C0 null' -> 'C6 any cell selection' <0003> gsm322.c:2793 Scanning power for sticked cell. <0003> gsm322.c:2870 Scanning frequencies. (1..1) <0005> gsm48_mm.c:4308 (ms 1) Received 'MM_EVENT_NO_CELL_FOUND' event in state MM IDLE, no cell available <0005> gsm48_mm.c:4321 Message unhandled at this state.

what should i do to connect mobile to my virtual bts?

thanks.