Methods and apparatus for conditional reconfiguration in integrated access and backhaul (IAB)

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

• determining traffic load information associated with a second WTRU;
• measuring received powers of one or more transmissions from a plurality of candidate WTRUs;
• selecting, based on the measured received powers, a candidate WTRU from the plurality of candidate WTRUs, wherein the selected candidate WTRU differs from the second WTRU;
• on condition that a triggering condition related to the traffic load information is satisfied:
• performing a mobility action for mobility to the selected candidate WTRU;
• and
• transmitting, to a third WTRU, a message, wherein the message comprises an index associated with one of the candidate WTRUs indicating the selected candidate WTRU.