BASE STATION AND CONTROL INFORMATION TRANSMISSION METHOD

摘要

This base station is capable of suppressing degradation of data throughput even when a DCI for a terminal connected to the base station is transmitted via an R-PDCCH region. In this base station, a PDCCH generation unit (104) generates control information transmitted via a first control channel that is mapped to the same resource region as a resource region to which data for the terminal (200) is allocated, or control information transmitted via a second control channel that is mapped to a resource region that differs from the abovementioned resource region. A transmission RF unit (112) transmits the generated control information. Here, the amount of control information in the first control channel is less than the amount of control information in the second control channel.