Patent ID: 8199757

Claim:
A method for creating protocol data unit (PDU) to be passed to a physical layer for uplink wireless communications, the method comprising: a wireless transmit/receive unit (WTRU) generating enhanced MAC-es service data units (SDUs) based on higher layer packet data units (PDUs), wherein each enhanced MAC-es SDU includes at least one complete higher layer PDU or at least one segment of a higher layer PDU; the WTRU generating an enhanced MAC-es PDU by concatenating a plurality of enhanced MAC-es SDUs and generating an enhanced MAC-es header as part of the enhanced MAC-es PDU, wherein the enhanced MAC-es header includes a segmentation descriptor (SD) field that indicates whether at least one enhanced MAC-es SDU concatenated in the enhanced MAC-es PDU is a complete or segmented higher layer PDU; the WTRU generating a corresponding enhanced MAC-e header for each enhanced MAC-es PDU that describes information of each enhanced MAC-es SDU concatenated in the enhanced MAC-es PDU; and the WTRU generating an enhanced MAC-e PDU by concatenating multiple enhanced MAC-es PDUs and corresponding enhanced MAC-e headers.