A Topology Maintenance Algorithm Used for Wireless Sensor Networks

Energy efficient is a critical issue in the research and applications of wireless sensor networks(WSN). The topology control scheme has been adopted as an useful measure to guaranty network connectivity and longer lifetime. In this paper, we proposed a topology maintenance algorithm to realize topology reconstruction when a cluster head being dead or a new cluster head elected. The algorithm design depends on the alive node´s remain energy and the distance between cluster head and sink node. Analysis and simulation results shown that the algorithm could optimize network topology and achieve longer system lifetime.