BASE STATION, COMMUNICATION TERMINAL, TRANSMISSION METHOD, AND RECEPTION METHOD

摘要

A base station includes: a scheduler which performs frequency scheduling for each sub-frame; means which prepares a control channel containing common control information mapped over a system band and specific control information mapped onto at least one RB allocated to a specific user device; and means for creating a transmission signal by time-multiplexing the common control information and the specific control information according to an instruction made by the scheduler. The common control information includes a format indicator indicating which of predetermined selection values is the number of symbols occupied by the control channel inone sub-frame. The common control information includes a specified multiplexing number or a smaller number of the unit information parts of a predetermined data size. The specified multiplexing number is contained in report information.