RADIO BASE STATION APPARATUS AND MOBILE TERMINAL APPARATUS

摘要

Provided are a radio base station apparatus and a mobile terminal apparatus wherein when there coexist a plurality of mobile communication systems, an efficient reception control can be achieved.  The radio base station apparatus uses a decoding unit, which is constituted by a plurality of data blocks, to assign, to at least two component carriers, a control signal of a mobile communication system that is constituted by a plurality of component carriers and that has a relatively wide system band.  The mobile terminal apparatus corresponding to the mobile communication system receives the control signal and uses the decoding unit, which is constituted by the plurality of data blocks, to demodulate the control signal, thereby determining whether the control signal is addressed to the mobile terminal apparatus.