Controller apparatus, mobile terminal, and communication control method

• US 20060160555A1
• Filed: 12/21/2005
• Published: 07/20/2006
• Est. Priority Date: 12/21/2004
• Status: Active Grant

• Current Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Original Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Inventors: Suzuki, Toshihiro, Kobayashi, Motonari
• Granted Patent: US 8,019,372 B2
• Time in Patent Office: Days
• US Class Current: 455/522
• CPC Class Codes: H04L 45/00 Routing or path finding of packets in data switching networks routing or path finding in wireless networks H04W40/00
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks

Abstract

A controller apparatus is configured to control an ad hoc network formed by a plurality of mobile terminals. The controller apparatus includes a transmission power determining unit configured to determine transmission power of a certain mobile terminal joining in the ad hoc network, based on traffic distribution in the ad hoc network.

Claims

1. A controller apparatus configured to control an ad hoc network formed by a plurality of mobile terminals, the controller apparatus comprising:

a transmission power determining unit configured to determine transmission power of a certain mobile terminal joining in the ad hoc network, based on traffic distribution in the ad hoc network.

2. The controller apparatus as set forth in claim 1, further comprising:

a location information acquiring unit configured to acquire location information on the mobile terminals; and

a network management information storage unit configured to manage the acquired location information on the mobile terminals as the traffic distribution.

3. The controller apparatus as set forth in claim 1, further comprising:

a traffic condition acquiring unit configured to acquire traffic conditions at the mobile terminals; and

a network management information storage unit configured to manage the acquired traffic conditions at the mobile terminals as the traffic distribution.

4. The controller apparatus as set forth in claim 1, further comprising:

a terminal capability information acquiring unit configured to acquire terminal capability information showing capabilities of the mobile terminals;

wherein the transmission power determining unit is configured to determine the transmission power of the certain mobile terminal, based on the traffic distribution and the terminal capability information.

5. The controller apparatus as set forth in claim 1, further comprising:

a communication condition information acquiring unit configured to acquire information on communication conditions required at the mobile terminals;

wherein the transmission power determining unit is configured to determine the transmission power of the certain mobile terminal, based on the traffic distribution and the communication condition information.

6. The controller apparatus as set forth in claim 5, wherein the communication condition information is configured to include an allowable delay time and a required transmission rate set by an application operated on the mobile terminals.

7. The controller apparatus as set forth in claim 1, wherein the transmission power determining unit is configured to determine the transmission power of the certain mobile terminal for each communication destination.

8. The controller apparatus as set forth in claim 1, further comprising:

a communication environment information acquiring unit configured to acquire communication environment information showing a communication environment at the mobile terminals; and

;

a proxy control information transmitting unit configured to transmit proxy control information for controlling the ad hoc network in place of the controller apparatus, to a representative mobile terminal belonging to the ad hoc network, when the acquired communication environment information satisfies a predetermined condition.

9. A mobile terminal configured to be able to join in an ad hoc network, comprising:

a transmitting unit configured to transmit location information on the mobile terminal and traffic conditions at the mobile terminal to a controller apparatus configured to control the ad hoc network; and

a communicating unit configured to perform communication in the ad hoc network with transmission power determined by the controller apparatus based on the location information and the traffic conditions.

10. A communication control method for controlling an ad hoc network formed by a plurality of mobile terminals, the method comprising:

transmitting, at the mobile-terminals, location information on the mobile terminals and traffic conditions at the mobile terminals to a controller apparatus configured to control the ad hoc network;

determining, at the controller apparatus, transmission power of a certain mobile terminal joining in the ad hoc network, based on the received location information and traffic conditions; and

performing, at the certain mobile terminal, communication in the ad hoc network with the determined transmission power.