Study On Topology Controland Channel Allocation Algorithm Based On Game For Lifetime Optimization In Wireless Sensor Network

Wireless Sensor Network(WSN)is a product of rapid development of embedded technology and communication technology in recent years.It has been widely used in special environment with the characteristics of self-organization,low power consumption,portable and so on.In recent years,it has received high attention in the field of international information.Spectrum resource and node energy in WSN are limited.How to allocate spectrum resources reasonably and reduce the energy consumption of nodes is one of the key directions of WSN technology research.Therefore,studying the joint algorithm of power control and channel assignment is of great scientific significance for promoting the development of WSN.Based on game theory,this topic launches the research on the joint optimization algorithm of topology control and channel assignment for WSN,and the specific research work is as follows.(1)Simply explain the composition,application and the whole process of information transmission of WSN.Under the background of the research at home and abroad,the advantages and disadvantages of the existing topology control algorithms and channel allocation algorithms are analyzed and summarized,which provide the theoretical basis for the main research content and organizational structure of the subject.(2)In order to solve the problem of serious interference caused by limited spectrum resources in WSN,this paper combines the existing physical interference model with quantitative analysis of node interference and considers node energy factors to construct the life period model of nodes.Based on Pareto optimal strategy,a joint optimization algorithm(JLIMA)is designed to optimize the life period of the network.The algorithm uses the knowledge of game theory to select the power and channel strategy of maximizing the benefit function.It can effectively prolong the life period of the network on the basis of reducing the network interference and energy consumption.(3)Considering that the unbalanced load will increase energy consumption of nodes and the network lifetime reduces,a load balancing and life period optimization game algorithm(JACLB)is proposed in this paper.The JACLB algorithm designed in this paperintegrates the power of node launching,node energy and node spacing into the benefit function,combining the knowledge of the game theory and selecting the power and channel of the optimal benefit function based on the best response strategy,realizing the balancing node load and reducing the energy consumption of the node,and effectively prolonging the energy consumption.