Research On Routing Protocol Of Wireless Sensor Network Based On Energy Optimization

Wireless sensor network(WSN)is a wireless self-organizing network which is composed of a large number of sensor nodes.Sensor nodes are generally battery-powered and deployed in environment where the battery is difficult to be replaced.Thus,how to maximize the energy efficiency of the node ? save the energy and prolong the life cycle of network that must be solved.The researches show that it is an important way to optimize the node energy and extend the life cycle of network by optimizing the routing algorithm of wireless sensor network.The currently existing routing protocols have their own limitation in energy conservation because of their different application scenarios.Thus,how to design a suitable routing protocol to use the node energy efficiently and extend the life cycle of network is a difficulty of the wireless sensor network research.This paper finishes three aspects research to better balance the energy consumption,prolong the life cycle of network and improve network coverage of WSN.Specifically,we study and analyze a typical routing protocol-LEACH,which is insufficient in clustering and electing cluster head.At the same time,we introduce a concept of distance difference between right and left,and a minimum distance screening mechanism to overcome the disadvantage of NSGA2 optimization algorithm to optimize the stage of WSN clustering.What's more,we come up with a method to choose a solution from the non-inferior solutions.Next,we overcome the disadvantages of the LEACH and derive the optimal cluster number by considering energy consumption of the network clustering stage.And then,we optimize the clustering method of LEACH with the improved algorithm.Finally,Based on the above improvements,a routing protocol LEACH-GS is obtained,which aims to achieve the object which can better balance the energy consumption of WSN and extend the life cycle of network.Finally,the performance of the improved protocol is verified in the EXata simulation environment.The simulation result shows that the improved protocol can balance the energy consumption and prolong the life cycle of the network by an average of 8.68% compared to the LEACH protocol.Thus,the improved protocol achieve the object of the energy optimization.