Patent ID: 11863665
Assignee: LENOVO (SINGAPORE) PTE. LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method in a user equipment (UE), the method comprising:
transmitting, from the UE, an encryption key request to an access and mobility management function (AMF) device or a policy control function (PCF) device as part of a non-access stratum request comprising security capabilities of the UE, wherein the encryption key request triggers the AMF device or the PCF device to communicate with a vehicle to everything (V2X) key management function (KMF) to obtain an application layer key, wherein the encryption key request is for the application layer key and the encryption key request comprises a group identifier (ID); and
in response to transmitting the encryption key request, as part of a non-access stratum response from the AMF device or the PCF device, receiving, at the UE, an encryption key response comprising the application layer key corresponding to the group ID.