A minimum-energy path-preserving topology-control algorithm

摘要: The topology of a wireless multihop network can be controlled by varying the transmission power at each node. It is not energy efficient to use communication G/sub max/ where every node transmits with maximum power. For operations, it desirable have subnetwork that preserves minimum-energy path between pair nodes (where one allows messages transmitted minimum energy). We first identify conditions are necessary and sufficient for G preserve this property. Using characterization, we then propose an topology-control algorithm that, given max/, computes least nodes. also energy-efficient reconfiguration protocol maintains property as changes dynamically. demonstrate performance improvements our over other existing algorithms through simulation.