MOBILE TERMINAL APPARATUS AND RADIO BASE STATION APPARATUS

摘要

Provided are mobile terminals and wireless base stations which can handle each mobile communication system when a plurality of mobile communication systems co-exist. In a mobile terminal, an SCH signal which is included in any downlink CC of a plurality of downlink CCs is used in a cell search which is conducted. The wireless base station reports a DBCH signal which includes the uplink CC information paired with the initial downlink CC which includes the SCH signal in the cell search, and transmits the response signal of a RACH signal from the mobile terminal to the mobile terminal in the initial downlink CC. The mobile terminal transmits a shared channel signal which includes the transmission/reception bandwidth information of the mobile terminal in the uplink CC to the wireless base station. The wireless base station transmits the control signal which includes the allocation information of the downlink CC and the uplink CC based on the information of the transmission/reception bandwidth information of the mobile terminal, and communicates with the mobile terminal via the downlink CC and the uplink CC based on the allocation information after a random access.