WIRELESS COMMUNICATION APPARATUS, WIRELESS COMMUNICATION SYSTEM, AND WIRELESS COMMUNICATION METHOD

1 . A wireless communication apparatus comprising:

processor circuitry configured to control to perform data communication when communication is performed with another wireless communication apparatus, the data communication selectively using a multiple-cell group, the multiple-cell group being selected when communication with the other wireless communication apparatus in a non-communication mode is established and being able to perform data communication allowed even in the non-communication mode.

2 . The wireless communication apparatus according to claim 1 , wherein the processor circuitry is further configured to notify the other wireless communication apparatus of identification information that enables simultaneous identification on the wireless communication apparatus and the other wireless communication apparatus, when the wireless communication apparatus establishes communication with the other wireless communication apparatus in a non-communication mode.

3 . The wireless communication apparatus according to claim 1 , wherein the processor circuitry is further configured to acquire a measurement result of a received signal strength in the other wireless communication apparatus, determines a base station corresponding to the multiple-cell group according to the measurement result, and requests identification information to be assigned to the other wireless communication apparatus from the base station, when the wireless communication apparatus establishes communication with the other wireless communication apparatus in a non-communication mode.

4 . A wireless communication apparatus comprising:

processor circuitry configured to control to perform data communication when communication is performed with another wireless communication apparatus, under control from the other wireless communication apparatus, the data communication selectively using a multiple-cell group, the multiple-cell group being selected when communication with the other wireless communication apparatus is established in a non-communication mode and being able to perform data communication allowed even in the non-communication mode.

5 . The wireless communication apparatus according to claim 4 , wherein the processor circuitry is notified of identification information that enables simultaneous identification on the wireless communication apparatus and the other wireless communication apparatus by the other wireless communication apparatus, when the wireless communication apparatus in a non- communication mode establishes communication with the other wireless communication apparatus.

6 . The wireless communication apparatus according to claim 4 , wherein the processor circuitry notifies the other wireless communication apparatus of information indicating that the other wireless communication apparatus is a base station able to be a communication counterpart of the wireless communication apparatus, when the wireless communication apparatus in a non-communication mode establishes communication with the other wireless communication apparatus.

7 . The wireless communication apparatus according to claim 4 , wherein when data communication using a first cell included in the multiple-cell group fails, the processor circuitry performs data communication using a second cell included in the multiple-cell group.

8 . A wireless communication system comprising:

a first wireless communication apparatus; and

a second wireless communication apparatus, wherein

the first wireless communication apparatus is further configured to control to perform data communication when communication is carried out with the second wireless communication apparatus, the data communication selectively using a multiple-cell group, the multiple-cell group being selected when communication with the second wireless communication apparatus in a non-communication mode is established and being able to perform data communication allowed even in the non-communication mode, and

the second wireless communication apparatus is further configured to control to perform data communication when communication is implemented with the first wireless communication apparatus, under control from the first wireless communication apparatus, the data communication selectively using a multiple-cell group, the multiple-cell group being selected when communication with the first wireless communication apparatus is established in a non-communication mode and being able to perform data communication allowed even in the non-communication mode.