US 12,284,578 B2
Procedures enabling privacy for WTRUs using PC5 communication
Michelle Perras, Montréal (CA); Khalid Anwar, Montreal (CA); Saad Ahmad, Montreal (CA); Alec Brusilovsky, Downingtown, PA (US); and Samir Ferdi, Kirkland (CA)
Assigned to InterDigital Patent Holdings, Inc., Wilmington, DE (US)
Filed by InterDigital Patent Holdings, Inc., Wilmington, DE (US)
Filed on Jan. 26, 2024, as Appl. No. 18/423,518.
Application 18/423,518 is a continuation of application No. 18/118,210, filed on Mar. 7, 2023, granted, now 11,930,433.
Application 18/118,210 is a continuation of application No. 17/056,925, granted, now 11,638,132, issued on Apr. 5, 2023, previously published as PCT/US2019/036341, filed on Jun. 10, 2019.
Claims priority of provisional application 62/812,676, filed on Mar. 1, 2019.
Claims priority of provisional application 62/741,962, filed on Oct. 5, 2018.
Claims priority of provisional application 62/688,614, filed on Jun. 22, 2018.
Prior Publication US 2024/0244407 A1, Jul. 18, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 4/40 (2018.01); H04L 67/12 (2022.01); H04W 12/02 (2009.01); H04W 12/037 (2021.01); H04W 76/11 (2018.01)
CPC H04W 4/40 (2018.02) [H04L 67/12 (2013.01); H04W 12/02 (2013.01); H04W 12/037 (2021.01); H04W 76/11 (2018.02)] 20 Claims
OG exemplary drawing
 
1. A method for use in a sidelink communication session, the method comprising:
transmitting to or receiving from a source wireless transmit/receive unit (WTRU) by a peer 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 wherein the session has an existing security context;
on condition that the session is ongoing and a trigger event occurs:
receiving, from the source WTRU, a new source WTRU L2 ID and a new most significant eight bits (MSB) of a new session ID;
generating, by the peer WTRU, a new peer WTRU L2 ID, and a new least significant eight bits (LSB) of the new session ID;
transmitting, by the peer WTRU to the source WTRU, the new peer WTRU L2 ID and the new LSB of the new session ID;
receiving, from the source 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 source WTRU by the peer 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 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.