Game theoretic approach for joint power control and routing in wireless sensor networks

A game theoretic approach is proposed for joint power control and route adaptations for wireless sensor networks to improve the network lifetime. A data collecting sensor network is assumed that employs asynchronous duty-cycling for energy conservation. In such networks, overhearing dominates the energy consumption, which can be controlled by adapting the transmit power levels as well as the route selections. The goal of this work is to determine assignments of transmit power levels and parent selections for all sensor nodes to maximize the lifetime of the network by controlling the overhearing in the nodes, while maintaining acceptable quality of routes. Performance results of the proposed schemes from computer simulations are presented.