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

Claim 7:
8. A source wireless transmit/receive unit (WTRU) comprising circuitry, including a transmitter, a receiver, a processor, and memory, the source WTRU configured to:
transmit to or receive from using the transmitter or receiver respectively, by the source WTRU to and from a peer WTRU using an existing source WTRU layer 2 identifier (L2 ID), an existing peer WTRU L2 ID, and an existing session ID for a session having an existing security context;
on condition that the session is ongoing and a trigger event occurs:
generate by the source WTRU, a new source WTRU L2 ID, and a new most significant eight bits (MSB) of a new session ID;
transmit, by the source WTRU to the peer WTRU, the new source WTRU L2 ID and the new MSB of the new session ID;
receive, from the peer WTRU, a new peer WTRU L2 ID and a new least significant eight bits (LSB) of the new session ID;
transmit, 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
transmit to or receive 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 transmission to or reception from the peer WTRU by the source 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.