A method is described 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 wireless communication system operating in a Time Division Duplex (TDD) mode. One or more downlink signals requiring Hybrid Automatic Repeat reQuest Acknowledgement (HARQ-ACK) feedback are received in a set of subframes. Reception response information about the one or more downlink signals is transmitted through a Physical Uplink Control CHannel (PUCCH) on a subframe configured for Scheduling Request (SR) transmission. When a predetermined condition is not satisfied, the reception response information and SR information are multiplexed and transmitted using a first HARQ-ACK PUCCH resource. When the predetermined condition is satisfied, for a positive SR, the reception response information includes information about an ACK count for the one or more downlink signals and is transmitted using a SR PUCCH resource.