User equipment, transmitting method of response information of downlink data thereof, base station, instructing method for transmitting response information of downlink data
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The present invention relates to a terminal, a method of transmitting the response information of downlink data of the terminal, a base station, an instructing method for transmitting the response information of downlink data of the base station. The terminal according to one embodiment of the present invention includes a receiving part which receives downlink data through physical downlink shared channel (PDSC); a control part which decides an uplink serving cell based on control information; and a transmission part which transmits response information about the downlink data.