Patent ID: 11930433
Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method for use in a sidelink communication session, the method comprising:
transmitting to or receiving from a peer wireless transmit/receive unit (WTRU) by a source WTRU using an existing source WTRU layer 2 identifier (L2 ID), an existing peer WTRU L2 ID, and an existing session identifier (ID) used for the session having an existing security context;
on condition that the session is ongoing and a trigger event occurs:
generating, by the source WTRU, a new source WTRU L2 ID and a new most significant eight bits (MSB) of a new session ID;
transmitting, by the source WTRU to the peer WTRU, the new source WTRU L2 ID and the new MSB of the new session ID;
receiving, from the peer WTRU, a new peer L2 ID and a new least significant eight bits (LSB) of the new session ID;
transmitting, by the source WTRU to the peer WTRU, an acknowledgement of the new peer WTRU L2 ID and the new LSB of the new session ID; and
transmitting to or receiving from the peer WTRU by the source WTRU using the new source WTRU L2 ID, the new peer WTRU L2 ID, and the new session ID that comprises the new MSB and the new LSB, wherein the transmitting to or the receiving from the peer WTRU occurs in accordance with the new session ID, the new source WTRU L2 ID, and the new peer WTRU L2 ID while maintaining the session using the existing security context.