In-sequence delivery of pdus in a pdu set in the uplink

A wireless transmit/receive unit (WTRU) comprising a processor configured to:

• receive configuration information indicating one or more threshold values associated with one or more retransmissions of a plurality of protocol data units (PDUs) of a PDU set, the one or more threshold values comprising at least one of a first threshold value corresponding to a number of PDUs to be transmitted or a second threshold value corresponding to a remaining delay budget;
• transmit the plurality of PDUs of the PDU set, the transmission of the plurality of PDUs of the PDU set being associated with a first logical channel associated with a first priority;
• receive an indication that one or more of the plurality of PDUs of the PDU set are to be retransmitted;
• determine a second priority to be used for retransmission of the one or more of the plurality of PDUs of the PDU set based on at least one of a number of the one or more of the plurality of PDUs of the PDU set to be retransmitted being greater than the first threshold value or a remaining delay budget for the one or more of the plurality of PDUs of the PDU set to be retransmitted being less than the second threshold value;
• and
• retransmit, using the second priority the one or more of the plurality of PDUs of the PDU set.