Operation method of relay ue related to id configuration in ue-to-ue relay in wireless communication system

A method comprising:

• establishing, by the relay user equipment (UE), a connection with a source remote UE for UE-to-UE relay;
• establishing, by the relay UE, a connection with the target remote UE for UE-to-UE relay;
• and
• allocating, by the relay UE, a local ID related to an end-to-end connection between the source remote UE and the target remote UE;
• wherein allocating the local ID is performed in the Radio Resource Control (RRC) layer of the relay UE.

A relay user equipment (UE), comprising:

• at least one processor;
• and
• at least one computer memory operatively connected to the at least one processor and storing instructions which when executed, cause the at least one processor to perform operations,
• wherein the operations include:
• establishing a connection with a source remote UE for UE-to-UE relay;
• establishing a connection with the target remote UE for UE-to-UE relay;
• and
• allocating a local ID related to an end-to-end connection between the source remote UE and the target remote UE;
• wherein allocating the local ID is performed in the Radio Resource Control (RRC) layer of the relay UE.

A non-volatile computer-readable storage medium storing at least one program including instructions which when executed by at least one processor, cause the at least one processor to perform operations for a relay user equipment (UE),

• wherein the operations include:
• establishing a connection for UE-to-UE relay with a source remote UE;
• establishing a connection with the target remote UE for UE-to-UE relay;
• and
• allocating a local ID related to an end-to-end connection between the source remote UE and the target remote UE;
• wherein allocating the local ID is performed in the Radio Resource Control (RRC) layer of the relay UE.