Patent ID: 7848255

Claim:
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.