MOBILE BASE STATION, MOBILE TERMINAL, MOBILE COMMUNICATIONS SYSTEM AND METHOD

• US 20100291957A1
• Filed: 05/12/2010
• Published: 11/18/2010
• Est. Priority Date: 05/18/2009
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Ozaki, Kazuyuki, Yoshida, Makoto, NAKAYA, Yuuta
• Granted Patent: US 8,725,185 B2
• Time in Patent Office: Days
• US Class Current: 455/509
• CPC Class Codes: H04W 72/27 between access points
• CPC Class Codes: H04W 72/56 based on priority criteria

Abstract

A mobile base station includes a detecting unit that detects communication information concerning another cell; a switching unit that based on the detected communication information, switches a communication resource used by the mobile base station to a communication resource different from that used in the other cell; a communication resource reporting unit that reports to a mobile terminal in a cell of the mobile base station, the communication resource switched to by the switching unit; and a communication information reporting unit that reports to a base station outside the cell of the mobile base station, communication information concerning the communication resource switched to by the switching unit.

Claims

1. A mobile base station comprising:

a detecting unit that detects communication information concerning another cell;

a switching unit that based on the detected communication information, switches a communication resource used by the mobile base station to a communication resource different from that used in the other cell;

a communication resource reporting unit that reports to a mobile terminal in a cell of the mobile base station, the communication resource switched to by the switching unit; and

a communication information reporting unit that reports to a base station outside the cell of the mobile base station, communication information concerning the communication resource switched to by the switching unit.

2. The mobile base station according to claim 1, wherein

the switching unit switches the communication resource used by the mobile base station, if the communication resource used in the cell of the mobile base station and the communication resource used in the other cell are the same.

3. The mobile base station according to claim 1, wherein

the communication information reporting unit includes a directivity control unit that controls directivity of an antenna and changes beam direction.

4. The mobile base station according to claim 1, wherein

the communication information reporting unit includes a transmission power control unit that increases transmission power to be greater than when the communication resource reporting unit reports the communication resource.

5. The mobile base station according to claim 1, wherein

the switching unit includes a position information comparing unit that compares position of the mobile base station and position of the base station, and switches the communication resource, based on a comparison result obtained by the position information comparing unit.

6. The mobile base station according to claim 5, wherein

the communication information reporting unit reports the position of the mobile base station.

7. A mobile terminal comprising:

a switching unit that based on information reported by a mobile base station, switches a communication resource; and

a communication unit that using the communication resource switched to by the switching unit, communicates with the mobile base station.

8. A mobile communication system comprising:

a mobile base station that includes;

a detecting unit that detects communication information concerning another cell,

a first switching unit that switches, based on the detected communication information, a communication resource used by the mobile base station to a communication resource different from that used in the other cell,

a communication resource reporting unit that reports to a mobile terminal in a cell of the mobile base station, the communication resource switched to by the first switching unit, and

a communication information reporting unit that reports to a base station outside the cell of the mobile base station, communication information concerning the communication resource switched to by the first switching unit; and

a mobile terminal that includes;

a second switching unit that based on information reported by the mobile base station, switches a communication resource, and

a communication unit that using the communication resource switched to by the second switching unit, communicates with the mobile base station.

9. The mobile communication system according to claim 8, wherein

the first switching unit switches the communication resource used by the mobile base station, if the communication resource used in the cell of the mobile base station and the communication resource used in the other cell are the same.

10. The mobile communication system according to claim 8, wherein

the communication information reporting unit includes a directivity control unit that controls directivity of an antenna and changes beam direction.

11. The mobile communication system according to claim 8, wherein

the communication information reporting unit includes a transmission power control unit that increases transmission power to be greater than when the communication resource reporting unit reports the communication resource.

12. The mobile communication system according to claim 8, wherein

the first switching unit includes a position information comparing unit that compares position of the mobile base station and position of the base station, and switches the communication resource used by the mobile base station, based on a comparison result obtained by the position information comparing unit.

13. The mobile communication system according to claim 12, wherein

the communication information reporting unit reports the position of the mobile base station.