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

Claim 9:
10. An apparatus comprising an access and mobility management function (AMF) device or a policy control function (PCF) device, the apparatus further comprising:
a physical receiver that receives, from a user equipment (UE), an encryption key request as part of a non-access stratum request comprising security capabilities of the UE, wherein the encryption key request is for an application layer key and the encryption key request comprises a group identifier (ID); and
a physical transmitter that:
in response to receiving the encryption key request, communicates with a vehicle to everything (V2X) key management function (KMF) to obtain the application layer key; and
in response to receiving the encryption key request as part of a non-access stratum response, transmits an encryption key response comprising the application layer key corresponding to the group ID.