Patent ID: 11889387
Assignee: NEC CORPORATION
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method for an AMF (Access and Mobility Management Function) apparatus, the method comprising:
connecting to a 3GPP (3rd Generation Partnership Project) access network and an N3IWF (Non-3GPP InterWorking Function) node apparatus;
receiving a Write-Replace Warning Request message from a CBC (Cell Broadcast Centre); and
in a case where the Write-Replace Warning Request message does not include a list of TAIs (Tracking Area Identities), forwarding the Write-Replace Warning Request message to an NG-RAN (Next Generation Radio Access Network) node apparatus indicated by information identifying a node apparatus of the 3GPP access network without forwarding the Write-Replace Warning Request message to the N3IWF node apparatus.