UE not registered to srsran gnb

[hayyanali-cmd]

Hello srsran_project team

This is first time for me with srsran_project, i worked before alot on srsran_4G
I installed srsran_project from source last week, followed the instructions in tutorials, I am using pixel 6a (SIM plmnid is 00101) and usrp b210. as you can see:

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sudo gnb -c gnb_rf_b200_tdd_n78_20mhz.yml

--== srsRAN gNB (commit e73b461) ==--

The PRACH detector will not meet the performance requirements with the configuration {Format B4, ZCZ 0, SCS 30kHz, Rx ports 1}.
Lower PHY in quad executor mode.
Available radio types: uhd.
[INFO] [UHD] linux; GNU C++ version 11.4.0; Boost_107400; UHD_4.7.0.0-0ubuntu1~jammy1
[INFO] [LOGGING] Fastpath logging disabled at runtime.
Making USRP object with args 'type=b200,num_recv_frames=64,num_send_frames=64'
[INFO] [B200] Detected Device: B210
[INFO] [B200] Operating over USB 3.
[INFO] [B200] Detecting internal GPSDO....
[INFO] [GPS] Found an internal GPSDO: GPSTCXO, Firmware Rev 0.929b
[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] Setting master clock rate selection to 'automatic'.
[INFO] [B200] Asking for clock rate 16.000000 MHz...
[INFO] [B200] Actually got clock rate 16.000000 MHz.
[INFO] [MULTI_USRP] Setting master clock rate selection to 'manual'.
[INFO] [B200] Asking for clock rate 23.040000 MHz...
[INFO] [B200] Actually got clock rate 23.040000 MHz.
Cell pci=1, bw=20 MHz, 1T1R, dl_arfcn=627340 (n78), dl_freq=3410.1 MHz, dl_ssb_arfcn=626976, ul_freq=3410.1 MHz

N2: Connection to AMF on 127.0.1.100:38412 completed
==== gNB started ===
Type to view help
Late: 0; Underflow: 1; Overflow: 0;
Late: 0; Underflow: 1; Overflow: 0;

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here is the AMF config file:

and here is the UPF config:

here is gnb file config:

Expected behavior:

the UE is attached properly

Actual behavior:

I can see my network but cant connect, when checking the gnb_mac.pcap using wireshark: the registration reject cause is : "5GMM cause: Semantically incorrect message (95)".

here is the amf log:

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10:18:09.384: [amf] INFO: [Added] Number of gNB-UEs is now 1 (../src/amf/context.c:2694)
10/17 10:18:09.384: [amf] INFO: RAN_UE_NGAP_ID[0] AMF_UE_NGAP_ID[1] TAC[7] CellID[0x66c000] (../src/amf/ngap-handler.c:596)
10/17 10:18:09.384: [amf] INFO: [suci-0-001-01-0-0-0-0123456789] Unknown UE by SUCI (../src/amf/context.c:1861)
10/17 10:18:09.384: [amf] INFO: [Added] Number of AMF-UEs is now 1 (../src/amf/context.c:1638)
10/17 10:18:09.384: [gmm] INFO: Registration request (../src/amf/gmm-sm.c:1220)
10/17 10:18:09.384: [gmm] INFO: [suci-0-001-01-0-0-0-0123456789] SUCI (../src/amf/gmm-handler.c:174)
10/17 10:18:09.386: [gmm] ERROR: [suci-0-001-01-0-0-0-0123456789] HTTP response error [400] (../src/amf/gmm-sm.c:1800)
10/17 10:18:09.386: [amf] WARNING: [suci-0-001-01-0-0-0-0123456789] Registration reject [95] (../src/amf/nas-path.c:211)
10/17 10:18:09.523: [amf] INFO: UE Context Release [Action:3] (../src/amf/ngap-handler.c:1726)
10/17 10:18:09.523: [amf] INFO: RAN_UE_NGAP_ID[0] AMF_UE_NGAP_ID[1] (../src/amf/ngap-handler.c:1727)
10/17 10:18:09.523: [amf] INFO: SUCI[suci-0-001-01-0-0-0-0123456789] (../src/amf/ngap-handler.c:1731)
10/17 10:18:09.523: [amf] INFO: [Removed] Number of gNB-UEs is now 0 (../src/amf/context.c:2701)
10/17 10:18:09.523: [amf] INFO: [Removed] Number of AMF-UEs is now 0 (../src/amf/context.c:1735)
10/17 10:19:26.651: [amf] INFO: gNB-N2[127.0.0.1] connection refused!!! (../src/amf/amf-sm.c:855)
10/17 10:19:26.651: [amf] INFO: [Removed] Number of gNBs is now 0 (../src/amf/context.c:1265)

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It is strange, because i am pretty sure that configs of the UE SIM (programmable osmocom one) are the same of configs of UE in open5gs webui.

I ask if you can suggest thankfully a solution to this problem :), all files are attached here:
registration_problem.zip

[newt2105]

Hi hayyanali-cmd,
Did you solve this problem?

[hayyanali-cmd]

yes, it is , just by disabling all 4G services like MME, .. also it worked only on my Samsung A25 device