A radio communication apparatus transmitting a data signal and a control signal to another radio communication apparatus where a controller controls transmission power of the control signal separately from transmission power of the data signal based on a feedback signal from the other radio communication apparatus. A method for controlling transmission power of a control channel includes determining a transmission power of a control channel based on a response from user equipment and controlling transmission power of the control channel separately from transmission power of a data signal based on the determined transmission power of a control channel.