Patent ID: 11924679
Assignee: NEC CORPORATION
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 1:
2. A method of a User Equipment (UE), the method comprising:
sending an IKE_AUTH_REQ message to a Non-3rd Generation Partnership Project (3GPP) InterWorking Function (N3IWF) node, wherein the IKE_AUTH_REQ message includes one or more Single Network Slicing Selection Assistance Information (S-NSSAIs);
receiving an IKE_AUTH_RSP message from the N3IWF node based on the S-NSSAIs in the IKE_AUTH_REQ message only include including one or more S-NSSAIs indicated in an OVERLOAD START message received by the N3IWF node, wherein the IKE_AUTH_RSP message includes an information element to notify congestion in a network, and wherein the IKE_AUTH_RSP message further includes a value of a backoff timer; and
not restarting a procedure related to Non-Access Stratum (NAS) by the UE until the backoff timer expires.