[srslte-users] Commercial cell phone attach failure

Tue Jun 2 08:34:46 UTC 2020

Hi Andre,

I need your help with the UE attach. I am trying to connect a commercial cell phone to srsENB and an external EPC. The eNB can detect the signals from the UE, in fact it is sending the proper signals to the EPC, but while it is performing the connection the eNB send the release message.
I have connect another phone to this same network and same SIM card. PFA the wireshark capture of the process and the logs in info mode, debug mode was too big to send. Also the data printed in the cmd.

researcher at T40700-LR041:~/srsLTE/srsenb$ sudo srsenb enb.conf
---  Software Radio Systems LTE eNodeB  ---

Reading configuration file enb.conf...

Built in Release mode using commit c892ae56b on branch HEAD.

/home/researcher/srsLTE/srsenb/src/enb_cfg_parser.cc.883: Force DL EARFCN for cell PCI=1 to 3100

Opening 1 channels in RF device=default with args=default
[INFO] [UHD] linux; GNU C++ version 7.4.0; Boost_106501; UHD_3.15.0.0-124-geb448043
[INFO] [LOGGING] Fastpath logging disabled at runtime.
Opening USRP channels=1, args: type=x300,master_clock_rate=184.32e6
[INFO] [X300] X300 initialization sequence...
[INFO] [X300] Maximum frame size: 1472 bytes.
[INFO] [X300] Radio 1x clock: 184.32 MHz
[INFO] [GPS] Found an internal GPSDO: LC_XO, Firmware Rev 0.929a
[INFO] [0/DmaFIFO_0] Initializing block control (NOC ID: 0xF1F0D00000000000)
[INFO] [0/DmaFIFO_0] BIST passed (Throughput: 1315 MB/s)
[INFO] [0/DmaFIFO_0] BIST passed (Throughput: 1291 MB/s)
[INFO] [0/Radio_0] Initializing block control (NOC ID: 0x12AD100000000001)
[INFO] [0/Radio_1] Initializing block control (NOC ID: 0x12AD100000000001)
[INFO] [0/DDC_0] Initializing block control (NOC ID: 0xDDC0000000000000)
[INFO] [0/DDC_1] Initializing block control (NOC ID: 0xDDC0000000000000)
[INFO] [0/DUC_0] Initializing block control (NOC ID: 0xD0C0000000000000)
[INFO] [0/DUC_1] Initializing block control (NOC ID: 0xD0C0000000000000)
Setting frequency: DL=2655.0 Mhz, UL=2535.0 MHz for cc_idx=0
The value of MBO interface is 75

==== eNodeB started ===
Type <t> to view trace
t
Enter t to stop trace.
RACH:  tti=6321, preamble=41, offset=0, temp_crnti=0x46

------DL--------------------------------UL------------------------------------
rnti cqi  ri mcs brate   ok  nok  (%)  snr  phr mcs brate   ok  nok  (%)   bsr
  46 0.10   0 1.8   314    2    0   0% 1.50  0.0 1.8    67    1   36  97%   0.0
Disconnecting rnti=0x46.
RACH:  tti=6991, preamble=20, offset=0, temp_crnti=0x47
  47 0.10   0 4.0   274    1    0   0% 1.24  0.0 7.2    60    1   28  97%   0.0
Disconnecting rnti=0x47.
^CStopping ..
---  exiting  ---

Thank you in advance for your help.
Kind regards,
Aaron

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