A method of transmitting uplink control information at a communication apparatus in a Time Division Duplex, TDD, wireless communication system, the method comprising: receiving at least one of one or more Physical Downlink Control CHannels, PDCCHs, and one or more Physical Downlink Shared CHannels, PDSCHs; and generating reception response information about the at least one of the one or more PDCCHs and the one or more PDSCHs, characterized in that: when a transmission time of the reception response information and a transmission time of channel status information are collided, if a certain condition is satisfied, the reception response information and the channel status information are transmitted using a first Physical Uplink Control CHannel, PUCCH, format, when the transmission time of the reception response information and the transmission time of the channel status information are collided, if the certain condition is not satisfied, the reception response information is transmitted using a second PUCCH format and the channel status information is dropped, the certain condition includes at least one of the following conditions to: a single PDSCH transmission only on a Primary Cell, PCell, indicated by detection of a PDCCH having a Downlink Assignment Index, DAI, initial value is present; a single PDCCH transmission only on the PCell that has the DAI initial value and indicates a Semi-Persistent Scheduling, SPS, release is present; and a single PDSCH transmission only on the PCell where there is not a corresponding PDCCH is present. receiving at least one of one or more Physical Downlink Control CHannels, PDCCHs, and one or more Physical Downlink Shared CHannels, PDSCHs; and generating reception response information about the at least one of the one or more PDCCHs and the one or more PDSCHs, characterized in that: when a transmission time of the reception response information and a transmission time of channel status information are collided, if a certain condition is satisfied, the reception response information and the channel status information are transmitted using a first Physical Uplink Control CHannel, PUCCH, format, when the transmission time of the reception response information and the transmission time of the channel status information are collided, if the certain condition is not satisfied, the reception response information is transmitted using a second PUCCH format and the channel status information is dropped, the certain condition includes at least one of the following conditions to: a single PDSCH transmission only on a Primary Cell, PCell, indicated by detection of a PDCCH having a Downlink Assignment Index, DAI, initial value is present; a single PDCCH transmission only on the PCell that has the DAI initial value and indicates a Semi-Persistent Scheduling, SPS, release is present; and a single PDSCH transmission only on the PCell where there is not a corresponding PDCCH is present. when a transmission time of the reception response information and a transmission time of channel status information are collided, if a certain condition is satisfied, the reception response information and the channel status information are transmitted using a first Physical Uplink Control CHannel, PUCCH, format, when the transmission time of the reception response information and the transmission time of the channel status information are collided, if the certain condition is not satisfied, the reception response information is transmitted using a second PUCCH format and the channel status information is dropped, the certain condition includes at least one of the following conditions to: a single PDSCH transmission only on a Primary Cell, PCell, indicated by detection of a PDCCH having a Downlink Assignment Index, DAI, initial value is present; a single PDCCH transmission only on the PCell that has the DAI initial value and indicates a Semi-Persistent Scheduling, SPS, release is present; and a single PDSCH transmission only on the PCell where there is not a corresponding PDCCH is present. a single PDSCH transmission only on a Primary Cell, PCell, indicated by detection of a PDCCH having a Downlink Assignment Index, DAI, initial value is present; a single PDCCH transmission only on the PCell that has the DAI initial value and indicates a Semi-Persistent Scheduling, SPS, release is present; and a single PDSCH transmission only on the PCell where there is not a corresponding PDCCH is present.