Procedures enabling privacy for WTRUs using PC5 communication
AssigneeInterDigital Patent Holdings, Inc.
InventorsMichelle Perras, Khalid Anwar, Saad Ahmad, Alec Brusilovsky, Samir Ferdi
Life of this patent
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Abstract
A method for changing layer 2 (L2) identifiers (ID)s during an ongoing vehicle-to-everything session between a source wireless transmit/receive unit (WTRU) and a peer WTRU includes communicating between the source and a peer WTRUs based on existing L2 IDs and an existing session ID. On a condition that a trigger event occurs, the source WTRU and the peer WTRU each generate new L2 IDs as well as respective portions of a new session ID. The new L2 IDs are subsequently used along with the new session ID to increase privacy of communication between the source WTRU and the peer WTRU.
Claims17
A method for use in an ongoing vehicle-to-everything session, the method comprising:
- communicating between a source wireless transmit/receive unit (WTRU) and 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) for an existing session having an existing security context;
- on a condition that a trigger event occurs:
- generating, by the source WTRU, a new source WTRU L2 ID and a new most significant byte (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 byte (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
- communicating with 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 communication with the peer WTRU occurs in the existing session using the existing security context.
A source wireless transmit/receive unit WTRU comprising circuitry, including a transmitter, a receiver, a processor, and memory, the source WTRU configured to:
- communicate, using the transmitter and receiver, between the source WTRU and 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 an existing session having an existing security context;
- on a condition that a trigger event occurs:
- generate by the source WTRU, a new source WTRU L2 ID, and a new most significant byte (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 byte (LSB) of the new session ID from the peer WTRU;
- 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
- communicate with 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 communication with the peer WTRU occurs in the existing session using the existing security context.
A non-transitory computer-readable storage medium embodying instructions, which when executed by a computer, cause the computer to perform a method for use in an ongoing vehicle-to-everything (V2X) session, the method comprising:
- communicating between a source wireless transmit/receive unit (WTRU) and 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 an existing session having an existing security context;
- on a condition that a trigger event occurs:
- generating, by the source WTRU, a new source WTRU L2 ID and a new most significant byte (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 byte (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
- communicating with 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 communication with the peer WTRU occurs in the existing session using the existing security context.
Dependencies are inferred from the claim text.