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

Claim 3:
4. An apparatus comprising:
a physical transmitter that transmits 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 apparatus, 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
a physical receiver that, in response to transmitting the encryption key request, receives an encryption key response from the AMF device or the PCF device, comprising the application layer key corresponding to the group ID.