Identity error during 5G SA connection from srsUE via PC/SC using an external USIM (pin code disabled)

[ohault]

Hello,

We have provisioned an USIM card and disabled the SIM code according to the documentation

This USIM card is working successfully in a 5G COTS device to connect to a srsRAN 5G private network in SA mode.

When we try to connect to the same 5G network using the same external USIM card in PC/SC from srsUE, we get an identity error.

Here are the ue_mac_nr capture file. ue_mac_nr.zip

Does the current srsUE support to connect to a 5G SA network using an external USIM or is it a current limitation ?

How to solve this issue ?

[platyman]

Hello, I have exactly the same problem. Has anyone found a fix? Here are the logs from my amf:

02/19 11:37:04.219: [gmm] INFO: [suci-0-206-90-0000-0-0-0000000001] SUCI (../src/amf/gmm-handler.c:174) 02/19 11:37:04.252: [sbi] WARNING: [AUSF] (SCP-discover) NF has already been added [afeebe7a-ee9d-41ef-b787-89a4676c0e26] (../lib/sbi/path.c:217) 02/19 11:37:04.252: [sbi] INFO: [afeebe7a-ee9d-41ef-b787-89a4676c0e26] NF Instance setup [type:AUSF validity:0s] (../lib/sbi/path.c:227) 02/19 11:37:04.252: [amf] INFO: NF EndPoint(addr) setup [127.0.0.11:7777] (../src/amf/nausf-handler.c:130) 02/19 11:37:04.428: [gmm] WARNING: [imsi-206900000000001] Security mode reject : Cause[20] (../src/amf/gmm-sm.c:2008) 02/19 11:37:04.584: [amf] INFO: UE Context Release [Action:3] (../src/amf/ngap-handler.c:1726) 02/19 11:37:04.584: [amf] INFO: RAN_UE_NGAP_ID[7] AMF_UE_NGAP_ID[42] (../src/amf/ngap-handler.c:1727) 02/19 11:37:04.584: [amf] INFO: SUCI[suci-0-206-90-0000-0-0-0000000001] (../src/amf/ngap-handler.c:1731) 02/19 11:37:04.584: [amf] INFO: [Removed] Number of gNB-UEs is now 1 (../src/amf/context.c:2701) 02/19 11:37:04.584: [amf] INFO: [Removed] Number of AMF-UEs is now 1 (../src/amf/context.c:1735) 02/19 11:38:17.809: [amf] INFO: InitialUEMessage (../src/amf/ngap-handler.c:435) 02/19 11:38:17.809: [amf] INFO: [Added] Number of gNB-UEs is now 2 (../src/amf/context.c:2694) 02/19 11:38:17.810: [amf] INFO: RAN_UE_NGAP_ID[8] AMF_UE_NGAP_ID[43] TAC[7] CellID[0x66c000] (../src/amf/ngap-handler.c:596) 02/19 11:38:17.811: [amf] INFO: [suci-0-206-90-0000-0-0-0000000001] Unknown UE by SUCI (../src/amf/context.c:1861) 02/19 11:38:17.812: [amf] INFO: [Added] Number of AMF-UEs is now 2 (../src/amf/context.c:1638) 02/19 11:38:17.812: [gmm] INFO: Registration request (../src/amf/gmm-sm.c:1220) 02/19 11:38:17.813: [gmm] INFO: [suci-0-206-90-0000-0-0-0000000001] SUCI (../src/amf/gmm-handler.c:174) 02/19 11:38:17.847: [sbi] WARNING: [AUSF] (SCP-discover) NF has already been added [afeebe7a-ee9d-41ef-b787-89a4676c0e26] (../lib/sbi/path.c:217) 02/19 11:38:17.847: [sbi] INFO: [afeebe7a-ee9d-41ef-b787-89a4676c0e26] NF Instance setup [type:AUSF validity:0s] (../lib/sbi/path.c:227) 02/19 11:38:17.849: [amf] INFO: NF EndPoint(addr) setup [127.0.0.11:7777] (../src/amf/nausf-handler.c:130) 02/19 11:38:18.028: [gmm] WARNING: [imsi-206900000000001] Security mode reject : Cause[20] (../src/amf/gmm-sm.c:2008) 02/19 11:38:18.182: [amf] INFO: UE Context Release [Action:3] (../src/amf/ngap-handler.c:1726) 02/19 11:38:18.183: [amf] INFO: RAN_UE_NGAP_ID[8] AMF_UE_NGAP_ID[43] (../src/amf/ngap-handler.c:1727) 02/19 11:38:18.183: [amf] INFO: SUCI[suci-0-206-90-0000-0-0-0000000001] (../src/amf/ngap-handler.c:1731) 02/19 11:38:18.183: [amf] INFO: [Removed] Number of gNB-UEs is now 1 (../src/amf/context.c:2701) 02/19 11:38:18.183: [amf] INFO: [Removed] Number of AMF-UEs is now 1 (../src/amf/context.c:1735)

Thank you for your help