Apparatus and method for transmitting uplink control information

A user equipment configured to transmit uplink control information through a Physical uplink Shared Channel (PUSCH) in a wireless communication system, the user equipment comprising:

• a Radio Frequency (RF) unit configured to transmit or receive an RF signal to or from a transmitter;
• and
• a processor connected to the RF unit and configured to
• receive a Radio Resource Control (RRC) message indicating a time interval for a periodic PUSCH transmission;
• receive a Physical Downlink Control Channel (PDCCH) signal indicating activation of the periodic PUSCH transmission;
• transmit first channel-state information through a periodic PUSCH signal according to the time interval;
• and
• transmit second channel-state information through an aperiodic PUSCH re-transmission signal according to a Hybrid ARQ (HARQ) timing if the transmission of the periodic PUSCH signal fails,
• wherein the second channel-state information is newly computed based on a Common Reference Signal (CRS) at the HARQ timing.