Patent ID: 8774118

Claim:
A method, implemented in a wireless transmit/receive unit (WTRU), for controlling enhanced dedicated channel (E-DCH) transmissions, the method comprising: receiving a plurality of primary absolute grants for E-DCH transmission for an upcoming transmission time interval (TTI); processing at least one primary absolute grant of the plurality of primary absolute grants to calculate at least one serving grant for E-DCH transmission; identifying a hybrid automatic repeat request (H-ARQ) process for use for the upcoming TTI; determining whether the identified H-ARQ process for use for the upcoming TTI is an active H-ARQ process, wherein only an active H-ARQ process is used for transmission of scheduled data and a non-active H-ARQ process is not used for transmission of scheduled data; determining whether scheduled data is available for transmission in the upcoming TTI; on a condition that scheduled data is available for transmission and the identified H-ARQ process is an active H-ARQ process and is available for the transmission of the scheduled data in the upcoming TTI: calculating a remaining power available for the upcoming TTI based on a maximum allowed power for the WTRU; performing E-DCH transport format combination (E-TFC) restriction based on the remaining power; selecting an E-TFC from a set of E-TFCs remaining after E-TFC restriction, wherein the E-TFC selection is based on the at least one serving grant; generating a protocol data unit (PDU) for transmission over an E-DCH in accordance with the selected E-TFC; and transmitting the PDU in accordance with the identified H-ARQ process.