Base station, transmission method

A disclosed base station employs a multicarrier scheme and performs frequency scheduling in a frequency band including multiple resource blocks each including one or more subcarriers. The base station includes a frequency scheduler for receiving channel condition information from communication terminals and generating scheduling information to allocate resource blocks to selected communication terminals having good channel conditions based on the channel condition information; a coding and modulation unit for encoding and modulating control channels including a general control channel to be decoded by the communication terminals and specific control channels to be decoded by the selected communication terminals; a multiplexing unit for time-division-multiplexing the general control channel and the specific control channels according to the scheduling information; and a transmitting unit for transmitting the time-division-multiplexed signal according to the multicarrier scheme. The coding and modulation unit encodes the general control channel separately for the respective communication terminals.