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Controller apparatus, mobile terminal, and communication control method for changing topology

  • US 7,848,255 B2
  • Filed: 12/21/2005
  • Issued: 12/07/2010
  • Est. Priority Date: 12/21/2004
  • Status: Expired due to Fees
First Claim
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1. A controller apparatus configured to control a topology in an ad hoc network formed by a plurality of mobile terminals, the controller apparatus comprising:

  • a topology information managing unit configured to manage topology information showing the topology;

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

    a link information acquiring unit configured to acquire link information at the mobile terminals;

    a determining unit configured to determine a way to change the topology, based on the acquired location information, the acquired link information, and the topology information managed by the topology information managing unit;

    a transmitting unit configured to generate instruction information for changing the topology, based on the determined way to change the topology, for transmission to a certain mobile terminal, the instruction information configured to instruct the certain mobile terminal forming a part of the ad hoc network to move in a required direction or to a required location;

    a communication environment information acquiring unit configured to acquire, from the mobile terminals, 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 performing the topology control in place of the controller apparatus, to a representative mobile terminal belonging to the ad hoc network, when the acquired communication environment information includes at least one of an average of a reception power, a reception signal-to-interference ratio (SIR) and a reception carrier-to-interference ratio (CIR) at the mobile terminals which is less than or equal to a predetermined threshold.

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