[srslte-users] M_TMSI keeps fail to attach when UE connects to EPC

[HONG-SIOU Wei]

Hi all,

When I try to connect to EPC, I always get stuck in *InitialUEMessage,
Attach request, PDN connectivity request*.

I check the mme_gid,mme_code to help me solve this problem but M_TMSI
still cannot determine whether it is correct.

How can I confirm that the M_TMSI transmitted by ENB is correct in EPC?

srsUE :

Reading configuration file ue.conf...

Built in Release mode using commit 0e89fa9 on branch master.

Opening 1 RF devices with 1 RF channels...
[INFO] [UHD] linux; GNU C++ version 5.4.0 20160609; Boost_105800;
UHD_3.14.0.0-release
[INFO] [LOGGING] Fastpath logging disabled at runtime.
Opening USRP with args: type=b200,master_clock_rate=23.04e6
[INFO] [B200] Detected Device: B210
[INFO] [B200] Operating over USB 3.
[INFO] [B200] Initialize CODEC control...
[INFO] [B200] Initialize Radio control...
[INFO] [B200] Performing register loopback test...
[INFO] [B200] Register loopback test passed
[INFO] [B200] Performing register loopback test...
[INFO] [B200] Register loopback test passed
[INFO] [B200] Asking for clock rate 23.040000 MHz...
[INFO] [B200] Actually got clock rate 23.040000 MHz.
Waiting PHY to initialize ... done!
Attaching UE...
Searching cell in DL EARFCN=3400, f_dl=2685.0 MHz, f_ul=2565.0 MHz
.
Found Cell:  Mode=FDD, PCI=1, PRB=50, Ports=1, CFO=-3.1 KHz
Found PLMN:  Id=20893, TAC=1
Random Access Transmission: seq=44, ra-rnti=0x2
Random Access Complete.     c-rnti=0x46, ta=1
RRC Connected
Failed to Attach
.
Found Cell:  Mode=FDD, PCI=1, PRB=50, Ports=1, CFO=-3.0 KHz
Found PLMN:  Id=20893, TAC=1

Thanks,
WEI,HONG-SIOU
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