Methods to determine relay selection behavior in a wireless transmit/receive unit

A first wireless transmit/receive unit (WTRU) comprising:

• a processor configured to:
• determine a first number and a first type of quality of service (QoS) flows associated with the first WTRU and a second number and a second type of quality of service (QoS) flows associated with a second WTRU, wherein the first WTRU and the second WTRU are configured for communication via a PC5 connection;
• receive configuration information, wherein the configuration information comprises an indication of a time period associated with a relay selection procedure;
• determine that a trigger condition has been satisfied, wherein the trigger condition is associated with channel conditions of the PC5 connection with the second WTRU;
• and
• determine, based on the trigger condition being satisfied, whether to initiate a discovery or link modification procedure or wait the time period associated with the relay selection procedure based on a comparison between the first number and the first type of QoS flows associated with the first WTRU and the second number and the second type of QoS flows associated with the second WTRU.

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

• determining a first number and a first type of quality of service (QoS) flows associated with a first WTRU and a second number and a second type of quality of service (QoS) flows associated with a second WTRU, wherein the first WTRU and the second WTRU are configured for communication via a PC5 connection;
• receiving configuration information, wherein the configuration information comprises an indication of a time period associated with a relay selection procedure;
• determining that a trigger condition has been satisfied, wherein the trigger condition is associated with channel conditions of the PC5 connection with the second WTRU;
• and
• determining, based on the trigger condition being satisfied, whether to initiate a discovery or link modification procedure or wait the time period associated with the relay selection procedure based on a comparison between the first number and the first type of QoS flows associated with the first WTRU and the second number and the second type of QoS flows associated with the second WTRU.