Patent ID: 8780855

Claim:
A radio communication apparatus to perform communication with another radio communication apparatus by using a plurality of frequency bands, the apparatus comprising: a receiving unit configured to receive by using a first frequency band a control message including identification information indicating a second frequency band different from the first frequency band during a random access procedure to said another radio communication apparatus; and a control unit configured to control data communication between said another radio communication apparatus and the radio communication apparatus by using the second frequency band indicated by the identification information included in the control message, wherein: the receiving unit is configured to receive by using the first frequency band another control message including other identification information indicating a third frequency band different from the first and second frequency bands during a random access procedure to said another radio communication apparatus; and the control unit is configured to control data communication between said another radio communication apparatus and the radio communication apparatus by using the third frequency band indicated by the other identification information included in said another control message.