Ericsson gNB + free5GC using Quectel RG530 UE

Q/A
#1

Hello folks,

I am working on a project trying to integrate Ericsson gNB with free5gc. The NGAP connection between the gNB and AMF is successful. However, when I try to connect a UE specifically (Quectel RG530 and Samsung S23), the UEContextSetup fails. I have been able to successfully connect the above UEs to other open-source 5G core. I have attached pcap here for more details.

I was wondering if anyone has faced this issue with free5gc and how it was resolved? I have read through previous posts here but have not seen any solution on this topic unfortunately. Any feedback on this will be greatly appreciated. Thanks!
free5gc_quectel_3.pcap (2.2 MB)

#2

Hi.
According to the pcap file, the ContextSetup failed in following part:

InitialContextSetupFailure
                ...
    Item 2: id-PDUSessionResourceFailedToSetupListCxtFail
         ProtocolIE-Field
         id: id-PDUSessionResourceFailedToSetupListCxtFail (132)
         criticality: ignore (1)
         value
         PDUSessionResourceFailedToSetupListCxtFail: 1 item
             Item 0
                 PDUSessionResourceFailedToSetupItemCxtFail
                     pDUSessionID: 1
                     pDUSessionResourceSetupUnsuccessfulTransfer: 00c0
                         PDUSessionResourceSetupUnsuccessfulTransfer
                             cause: radioNetwork (0)
                                 radioNetwork: failure-in-radio-interface-procedure (24)

The cause is identified as RadioNetwork: failure-in-radio-interface-procedure.
Here are potential reasons for this issue:

  1. The gNB might be misconfigured, causing it to reject or fail the procedure.
  2. UE Security Capabilities.
  3. PDU session resource for this UE could not be established due to a radio network issue.

Maybe you can verify the gNB configuration for any mismatches or errors, while checking the radio network connection.

To solve this problem further, we might need more information such as:

  1. What version of free5GC are you using?
  2. Are there any error logs for the AMF?
  3. How do you connect the UEs?

Thanks.