Patent ID: 8804812

Claim:
A method for transmitting a reception acknowledgement for hybrid automatic repeat request (HARQ) of a user equipment in a wireless communication system, the method comprising: receiving downlink control information (DCI) on a physical downlink control channel (PDCCH) through one of a first component carrier and a second component carrier, the DCI including a downlink resource allocation; receiving a downlink transport block in accordance with the downlink resource allocation through one of the first component carrier and the second component carrier; and transmitting a ACK/NACK signal for the downlink transport block on a physical uplink control channel (PUCCH), wherein if the downlink transport block is received through the first component carrier, a resource used for the PUCCH is determined from a resource used for the PDCCH, wherein if the downlink transport block is received through the second component carrier, the resource used for the PUCCH is determined from one of reserved resources which are configured by a Radio Resource Control (RRC) message, and wherein the resource used for the PUCCH is associated with an orthogonal sequence with which the ACK/NACK signal is spread.