Patent ID: 8139609

Claim:
A wireless transmit/receive unit (WTRU) comprising: a medium access control (MAC) entity for an enhanced dedicated channel (E-DCH), the MAC entity comprising: at least one segmentation entity per logical channel configured to segment at least one MAC service data unit (SDU), wherein a selected MAC SDU is segmented if the MAC SDU is too large to fit into a selected payload size for a logical channel, the segmentation entity further configured to set a segmentation description field; a multiplexing and transmission sequence number (TSN) setting entity configured to concatenate the at least one MAC SDU or segment of MAC SDU into at least one first MAC protocol data unit (PDU), wherein the segmentation description field is included in a header of the first MAC PDU, and wherein on a condition that the first MAC PDU ends in a segment of a MAC SDU and remaining segments of the MAC SDU are to be concatenated in another first MAC PDU, the segmentation description field indicates that remaining segments are to follow in a subsequently concatenated first MAC PDU, the multiplexing and TSN setting entity further configured to multiplex the at least one first MAC PDU into a second MAC PDU; an enhanced transport format combination (E-TFC) selection entity configured to control the multiplexing and TSN setting entity such that the MAC SDUs or segmented MAC SDUs fill the first MAC PDU and to control the transmissions of the second MAC PDU in a next transmission time interval (TTI); and a hybrid automatic retransmission request (HARQ) entity configured to store and transmit at least one second MAC PDU payload.