Patent ID: 11950182
Assignee: APPLE INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. A method for communication, comprising:
a user equipment device (UE),
decoding, from a base station, control signaling that indicates a default PC5 radio access technology (RAT) for a vehicle-to-everything (V2X) service, wherein the default PC5 RAT is either a Long Term Evolution (LTE) PC5 RAT or a New Radio (NR) PC5 RAT;
selecting the LTE PC5 RAT or the NR PC5 RAT to be proposed, in a negotiation with a receiving UE, for the V2X service, wherein, if the UE supports at least the default PC5 RAT, select the default PC5 RAT, and wherein, if the UE does not support the default PC5 RAT, select the PC5 RAT that is supported by the UE;
encoding, for transmission to the receiving UE, a PC5 RAT request message to initiate the V2X service, wherein the PC5 RAT request message indicates the selected PC5 RAT;
decode, from the receiving UE, a PC5 RAT response message that indicates which PC5 RAT, of the LTE PC5 RAT and the NR PC5 RAT, was selected by the receiving UE for the V2X service; and
encode, for transmission to the receiving UE, a PC5 RAT acknowledgement (ACK) message to indicate reception of the PC5 RAT response message.