Methods and apparatus for supporting adaptive quality of service (qos) in sidelink relays

A wireless transmit/receive unit (WTRU) comprising:

• a transceiver and a processor configured to:
• transmit a first indication, to a remote WTRU, based on a trigger condition being met,
• receive, from the remote WTRU, at least one packet for second hop transmission and a second indication regarding a latency budget for the second hop transmission based at least in part on the first indication, and
• transmit the at least one packet using the latency budget for the second hop transmission.

A method, implemented in a wireless transmit/receive unit (WTRU), the method comprising:

• receiving a configuration, from a wireless network, the configuration indicating an initial first hop latency budget for communications via a relay WTRU;
• receiving one or more packets from a higher layer;
• receiving an indication from the relay WTRU;
• determining an updated first hop latency budget based at least on the received indication;
• and
• transmitting the one or more packets using the updated first hop latency budget.