School of Specs 24.501v20.0.0

3GPP 24.501 v20.0.0 — the document's own text

5.3.5.3 Wireline access service area restrictions

Taught in 4. Inside TS 24.501, the document at the centre (CT1 — the group that writes what your phone says, overview).

If:

  • a SERVICE REJECT message with the 5GMM cause #28 "Restricted service area";
  • a DL NAS TRANSPORT message with the Payload container type IE set to "N1 SM information" and the 5GMM cause #28 "Restricted service area"; or
  • a REGISTRATION ACCEPT message includes the PDU session reactivation result error cause IE with the 5GMM cause #28 "Restricted service area";

is received over wireline access then the 5G-RG or the W-AGF acting on behalf of the FN-CRG (or on behalf of the N5GC device) shall start enforcing the wireline access service area restrictions and shall enter the state 5GMM-REGISTERED.NON-ALLOWED-SERVICE.

While in the state 5GMM-REGISTERED.NON-ALLOWED-SERVICE, the 5G-RG or the W-AGF acting on behalf of the FN-CRG (or on behalf of the N5GC device) shall:

  • if in 5GMM-IDLE mode over wireline access:
    • shall not perform the registration procedure for mobility and periodic registration update with Uplink data status IE except for emergency services or for high priority access; and
    • shall not initiate a service request procedure except for:
      • emergency services,
      • emergency services fallback; or
      • high priority access; and
  • if in 5GMM-CONNECTED mode over wireline access:
    • shall not perform the registration procedure for mobility and periodic registration update with Uplink data status IE except for:
      • emergency services;
      • emergency services fallback; or
      • high priority access;
    • shall not initiate a service request procedure except for emergency services, or high priority access; and
    • shall not initiate a 5GSM procedure except for emergency services or high priority access;

over the wireline access.

When the 5G-RG is switched off, the UICC containing the USIM is removed or the 5G-RG starts using another wireline access network, the 5G-RG shall stop enforcing the wireline access service area restrictions, if enforced.

NOTE: When the 5G-RG acting on behalf of the AUN3 device determines that the AUN3 device is switched off or the UICC containing the USIM of AUN3 device is removed, the 5G-RG acting on behalf of the AUN3 device stops enforcing the wireline access service area restrictions, if enforced.

When the W-AGF acting on behalf of the FN-CRG determines that the FN-CRG is switched off, the W-AGF acting on behalf of the FN-CRG stops enforcing the wireline access service area restrictions, if enforced.

When the W-AGF acting on behalf of the N5GC device determines that the FN-CRG serving the N5GC device is switched off, the W-AGF acting on behalf of the N5GC device stops enforcing the wireline access service area restrictions, if enforced.