MAC multiplexing and TFC selection procedure for enhanced uplink

A method for transferring data over an enhanced dedicated channel (E-DCH), implemented in a wireless transmit/receive unit (WTRU), comprising:

• receiving at least one serving grant and at least one non-scheduled grant,
• wherein the at least one serving grant is a grant for scheduled data transmission and the at least one non-scheduled grant is a grant for non-scheduled data transmission;
• multiplexing data of medium access control-dedicated channel (MAC-d) flows into a medium access control enhanced dedicated channel (MAC-e) protocol data unit (PDU);
• wherein the MAC-e PDU has a size not greater than the size of the largest enhanced dedicated channel transport format combination (E-TFC) that does not exceed a first size based at least on the at least one serving grant and the at least one non-scheduled grant, wherein the multiplexed data includes scheduled data for transmission;
• selecting an E-TFC for transmission of the MAC-e PDU, wherein the selected E-TFC does not exceed the first size;
• and
• transmitting the MAC-e PDU processed in accordance with the selected E-TFC.

A base station comprising:

• a physical layer configured to receive an enhanced dedicated physical channel (E-DPCH) and recover a medium access control enhanced dedicated channel (MAC-e) protocol data unit (PDU) from the received E-DPCH, wherein the MAC-e PDU has a size not greater than the size of the largest enhanced dedicated channel transport format combination (E-TFC) that does not exceed a first size based at least on at least one serving grant and at least one non-scheduled grant, wherein the at least one serving grant is a grant for scheduled data transmission and the at least one non-scheduled grant is a grant for non-scheduled data transmission;
• a MAC-e/es device configured to receive the MAC-e PDU and demultiplex the MAC-e PDU into at least one medium access control dedicated channel (MAC-d) PDU and the MAC-e/es device is configured to output the MAC-d PDU;
• and
• a MAC-d device configured to receive the outputted MAC-d PDU and to output at least one logical channel.