Patent ID: 11902776
Assignee: NEC CORPORATION
Field: Digital communication (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 3:
4. A method for authenticating user equipment (UE) comprising:
sending, from the UE to a Non-3GPP Inter Working Function (N3IWF) node via a non-3GPP access network (AN), a Registration Request message including Key Set Identifier (KSI) and UE Security Capabilities;
forwarding, from the N3IWF node to an Access and Mobility Function (AMF) node, the Registration Request message;
sending, from the AMF node to an Authentication Server Function (AUSF) node, information for performing an authentication procedure for the UE, wherein the information is based on the received Registration Request message;
receiving, by the AUSF node from a Unified Data Management (UDM) node, an Authentication Vector (AV) including an expected response (XRES);
receiving, by the AUSF node, a response (RES) from the UE via a Security Anchor Function (SEAF); and
authenticating, by the AUSF node, the UE by comparing the RES with the XRES.