Method and apparatus for reporting feedback information for multi-carrier operation

A wireless transmit/receive unit (WTRU) comprising:

• a transceiver;
• and
• a processor operatively coupled to the transceiver;
• wherein:
• the transceiver is configured to receive configuration information, wherein the configuration information indicates a plurality of downlink carriers and indicates a plurality of physical control channel resources for feedback;
• the transceiver is configured to receive a control signal indicating a downlink transmission for reception on one of the plurality of downlink carriers;
• the transceiver is configured to receive the downlink transmission on the one of the plurality of downlink carriers;
• and
• the transceiver and the processor are configured to transmit feedback for the downlink transmission using one of the plurality of physical control channel resources, wherein the one of the plurality of physical control channel resources is selected from the plurality of physical control channel resources based on the control signal.

A base station comprising:

• a transceiver;
• and
• a processor operatively coupled to the transceiver;
• wherein:
• the transceiver and the processor are configured to transmit configuration information, wherein the configuration information indicates a plurality of downlink carriers and indicates a plurality of physical control channel resources for feedback;
• the transceiver and the processor are configured to transmit a control signal indicating a downlink transmission for reception on one of the plurality of downlink carriers;
• the transceiver and the processor are configured to transmit the downlink transmission on the one of the plurality of downlink carriers;
• and
• the transceiver is configured to receive feedback for the downlink transmission using one of the plurality of physical control channel resources.