Optimization of Cluster-based Routing Protocols in Wireless Sensor Network Using PSO

Cluster-based routing protocols have the good adaptability for the remote monitoring of large-scale wireless sensor network.But the existing algorithms are prone to lead nodes in clusters to die early due to ignoring the state of neighbors in the process of cluster-heads decision.A new cluster-based algorithm using PSO is proposed to optimize clustering process.The election of cluster-heads needs synthetically consider the state information including location and energy reserved about candidates and their neighbors.The simulation results show that our protocol improves the performance and efficiently delay the occurrence time of dead nodes,and thus prolongs the network lifetime.