US 12,621,744 B2 · Change of PC5 link identifiers between the WTRU and the layer-2 WTRU to WTRU relay

Abstract

In examples, the E2E link IDs may be isolated per-hop, so that changes of link IDs may not impact other E2E/per-hop links (e.g., a LIU procedure may only run between a WTRU and the relay). A relay may allocate R-specific security IDs/session key identifiers (e.g., MSBs/LSBs of Knrp-sess ID). The relay (e.g., relay WTRU) may replace the security IDs/session key identifiers received from peer WTRUs with R-specific security IDs/session key identifiers, for example, if forwarding a message. In examples, per-hop IDs and E2E IDs may be added to link identifier update messages. In examples, the support application layer ID and IP address/prefix may be changed using a link modification procedure (e.g., between E2E peer WTRUs), which may be executed during the LIU procedure run between a WTRU and a WTRU-to-WTRU relay.

Claims20

Dependent claims

A relay wireless transmit/receive unit (WTRU) for establishing an end-to-end (E2E) link, comprising:

a processor configured to:
receive a first message from a first WTRU, wherein the first message comprises an adaptation header that indicates a first set of most significant bits (MSBs) for the first WTRU that are associated with a first session key identifier;
generate a second session key identifier;
generate a second set of MSBs based on the second session key identifier, wherein the second set of MSBs have a mapping to the first set of MSBs;
send a second message to a second WTRU, wherein the second message indicates the second set of MSBs;
generate a first set of least significant bits (LSBs) based on the second session key identifier, wherein the first set of LSBs have a mapping to a second set of LSBs that are associated with the second WTRU;
and
send a third message to the first WTRU, wherein the third message indicates the first set of LSBs.

5 more elements

Dependencies are inferred from the claim text.

Change of PC5 link identifiers between the WTRU and the layer-2 WTRU to WTRU relay

Life of this patent

Change of PC5 link identifiers between the WTRU and the layer-2 WTRU to WTRU relay

Life of this patent

Abstract

Claims20