Research On Clustering Routing Protocol For Wireless Sensor Networks Based On Particle Swarm Optimization

Wireless Sensor Networks(WSN)is one of the emerging technologies that integrate multi-disciplinary technology,it has the functions of data acquisition,data processing and data transmission.Sensor nodes aware environment parameter information through their own organization.The processed data is transmitted to the control personnel by means of wireless communication to realize the understanding of the objective physical world.At present,WSN has been applied in many industries,WSN is increasingly concerned because of its broad application prospects and great commercial value.However,the node's power is limited,moreover,nodes' ability of storage,computing and communication are limited because of the particularity of physical structure.Therefore,it is very important to design high-performance WSN routing protocol.The research shows that the hierarchical routing protocol has more advantages in terms of network topology,energy efficiency and so on than the plane routing protocol.The WSN routing protocol with clustering strategy and multi-hop routing mechanism can effectively balance the energy consumption of WSN,and prolong the life cycle of the network.With the progress of the research,large-scale WSN routing protocol has gradually become hierarchical.In addition,Particle Swarm Optimization(PSO)has the advantages of simple implementation and good self-organization.It is suitable for combination optimization and network routing.PSO can meet the WSN' requirements for high-performance routing.By introducing PSO algorithm,WSN' clustering and routing problem can be dynamically optimized to improve the stability of the network and extend the life cycle of the network.The main work and innovation of this paper are as follows:(1)Through the analysis of the topological structure and energy consumption model of WSN in multi-hop communication,this paper proposes a nonuniform node deployment strategy based on network clustering,this strategy quantifies the number of nodes in the cluster and designs the corresponding routing protocol.(2)Aiming at the special application environment of WSN,this paper proposes a method to deploy relay nodes of two layer WSN.This method is based on the principle that relay nodes change at the same time in the process of network work,and the replacement of relay nodes is regarded as virtual movement,in order to find the best position and number to deploy relay nodes.(3)This paper presents a new WSN clustering routing algorithm.The adaptive function is redesigned based on the factors such as the residual energy and spacing of the nodes and the distance between the clusters.PSO is used to optimize the cluster head selection to balance the energy consumption of the network and prolong the life cycle of the network.