METHOD AND APPARATUS FOR DETERMINING TRANSMISSION POWER OF UPLINK CONTROL CHANNEL IN WIRELESS COMMUNICATION SYSTEM

Disclosed are a method for determining the transmission power of an uplink control channel of a terminal which has been assigned, by a base station, two cells that have different UL-DL configurations, and an apparatus using the method. The method comprises: choosing a larger value between N1, the number of downlink subframes that correspond to subframe n of a first cell having a first UL-DL configuration, and N2, the number of downlink subframes that correspond to subframe n of a second cell having a second UL-DL configuration; and determining a parameter value based on the chosen value, wherein the parameter determines the transmission power of an uplink control channel which is transmitted in subframe n.