Patent ID: 8457091

Claim:
A wireless transmit/receive unit (WTRU) configured for communication via a primary serving cell, a first secondary serving cell, and a second secondary serving cell, the WTRU comprising: a receiver configured to receive information on the primary serving cell, a first HS-DSCH signal on the first secondary serving cell, and a second HS-DSCH signal on the second secondary serving cell; circuitry configured to generate a first HARQ-ACK feedback relating to the first HS-DSCH signal and a second HARQ-ACK feedback relating to the second HS-DSCH signal; and a transmitter configured to transmit the first HARQ-ACK feedback and the second HARQ-ACK feedback over a single uplink carrier, wherein the first HARQ-ACK feedback and the second HARQ-ACK feedback are combined into a HS-DPCCH and transmitted with a spreading factor of 128.