Method and apparatus for transmitting channel quality control information using PUCCH format 3 in a wireless access system

A user equipment (UE) for transmitting uplink control information (UCI) in a wireless access system supporting carrier aggregation, the UE comprising:

• a receiver;
• a transmitter;
• and
• a processor configured to control the receiver and the transmitter in order to support the transmission of the UCI,
• wherein the processor is configured to:
• receive two or more physical downlink shared channels (PDSCHs) via two or more downlink component carriers, respectively by controlling the receiver;
• perform channel coding with respect to the UCI according to a payload size of the UCI including acknowledgement information and channel quality information (CQI) for each of the two or more downlink component carriers;
• perform rate matching with respect to the channel coded UCI for a physical uplink control channel (PUCCH) format 3;
• and
• transmit the rate matched UCI based on the PUCCH format 3 by controlling the transmitter,
• wherein the channel coding is performed by using a (32, O) code when the payload size of the UCI is less than or equal to 11 bits,
• wherein the channel coding is performed by using two (32, O) codes when the payload size of the UCI is greater than or equal to 12 bits, and
• wherein ‘O’ is the payload size of the UCI.