A method for transmitting uplink control information at a communication apparatus configured with a plurality of cells including a Primary Cell PCell and a Secondary Cell SCell in a Long-Term Evolution, LTE,-based wireless communication system operating in a Time Division Duplex TDD mode, the method comprising: receiving at least one of one or more Physical Downlink Control CHannel PDCCH signals and one or more Physical Downlink Shared CHannel PDSCH signals; and transmitting reception response information about the at least one of the one or more PDCCH signals and the one or more PDSCH signals through a Physical Uplink Control CHannel PUCCH on a subframe configured for Scheduling Request SR transmission, wherein when a predetermined condition is not satisfied, the reception response information and SR information are multiplexed and transmitted using a first PUCCH resource for Hybrid Automatic Repeat request Acknowledgement HARQ-ACK, and wherein when the predetermined condition is satisfied, when there is a positive SR for the subframe configured for SR transmission, the reception response information is transmitted using a PUCCH resource for SR, wherein the predetermined condition includes at least one of the following conditions: only a single PDSCH transmission on the PCell is present indicated by detection of a PDCCH having a Downlink Assignment Index DAI initial value; only a single PDCCH transmission on the PCell is present that has the DAI initial value and indicates a Semi-Persistent Scheduling SPS release and only a single PDSCH transmission on the PCell is present where there is not a corresponding PDCCH. receiving at least one of one or more Physical Downlink Control CHannel PDCCH signals and one or more Physical Downlink Shared CHannel PDSCH signals; and transmitting reception response information about the at least one of the one or more PDCCH signals and the one or more PDSCH signals through a Physical Uplink Control CHannel PUCCH on a subframe configured for Scheduling Request SR transmission, wherein when a predetermined condition is not satisfied, the reception response information and SR information are multiplexed and transmitted using a first PUCCH resource for Hybrid Automatic Repeat request Acknowledgement HARQ-ACK, and wherein when the predetermined condition is satisfied, when there is a positive SR for the subframe configured for SR transmission, the reception response information is transmitted using a PUCCH resource for SR, wherein the predetermined condition includes at least one of the following conditions: only a single PDSCH transmission on the PCell is present indicated by detection of a PDCCH having a Downlink Assignment Index DAI initial value; only a single PDCCH transmission on the PCell is present that has the DAI initial value and indicates a Semi-Persistent Scheduling SPS release and only a single PDSCH transmission on the PCell is present where there is not a corresponding PDCCH. only a single PDSCH transmission on the PCell is present indicated by detection of a PDCCH having a Downlink Assignment Index DAI initial value; only a single PDCCH transmission on the PCell is present that has the DAI initial value and indicates a Semi-Persistent Scheduling SPS release and only a single PDSCH transmission on the PCell is present where there is not a corresponding PDCCH.