A method for transmitting uplink control information by a communication device configured with a plurality of serving cells including a primary cell and a secondary cell in a wireless communication system, the method comprising: receiving (S1004) resource indication information through a Semi-Persistent Scheduling, SPS, activation Physical Downlink Control Channel, PDCCH, the resource indication information indicating one or more Physical Uplink Control Channel, PUCCH, format 1b resources based on a first set of PUCCH format 1b resources configured by a higher layer; receiving (S1006) an SPS Physical Downlink Shared Channel, PDSCH, without a corresponding PDCCH in the primary cell after receiving the SPS PDCCH; selecting (S1008) a PUCCH format 1b resource corresponding to a plurality of Hybrid Automatic Repeat request - Acknowledgements, HARQ-ACKs, from a second set of PUCCH format 1b resources, the plurality of HARQ-ACKs including reception response information for the SPS PDSCH; and transmitting (S1010) a bit value corresponding to the plurality of HARQ-ACKs using the selected PUCCH format 1b resource, characterized in that the second set of PUCCH format 1b resources include one PUCCH format 1b resource provided on the basis of the resource indication information when the primary cell is set to a first transmission mode supporting a transmission of up to one transport block, and the second set of PUCCH format 1b resources include a plurality of PUCCH format 1b resources provided on the basis of the resource indication information when the primary cell is set to a second transmission mode supporting a transmission of up to two or more transport blocks, the SPS PDSCH carries only one transport block regardless of whether the primary cell is set to any of the first transmission mode or the second transmission mode. receiving (S1004) resource indication information through a Semi-Persistent Scheduling, SPS, activation Physical Downlink Control Channel, PDCCH, the resource indication information indicating one or more Physical Uplink Control Channel, PUCCH, format 1b resources based on a first set of PUCCH format 1b resources configured by a higher layer; receiving (S1006) an SPS Physical Downlink Shared Channel, PDSCH, without a corresponding PDCCH in the primary cell after receiving the SPS PDCCH; selecting (S1008) a PUCCH format 1b resource corresponding to a plurality of Hybrid Automatic Repeat request - Acknowledgements, HARQ-ACKs, from a second set of PUCCH format 1b resources, the plurality of HARQ-ACKs including reception response information for the SPS PDSCH; and transmitting (S1010) a bit value corresponding to the plurality of HARQ-ACKs using the selected PUCCH format 1b resource, characterized in that the second set of PUCCH format 1b resources include one PUCCH format 1b resource provided on the basis of the resource indication information when the primary cell is set to a first transmission mode supporting a transmission of up to one transport block, and the second set of PUCCH format 1b resources include a plurality of PUCCH format 1b resources provided on the basis of the resource indication information when the primary cell is set to a second transmission mode supporting a transmission of up to two or more transport blocks, the SPS PDSCH carries only one transport block regardless of whether the primary cell is set to any of the first transmission mode or the second transmission mode. <EOS>