Research On Energy-aware Multi-path Routing Algorithm In Wireless Sensor Networks

A Wireless Sensor Networks(WSN),which integrating of sensor techniques, nested computation techniques,distributed computation techniques and wireless communication techniques,is a new research area of computer science and technology,and has a wide application future.Both academia and industries are very interested in it.The wireless sensor nodes are often only equipped with limited power resources,and it is very hard to change and recharge.In order to increase the network lifetime,it is crucial to develop an energy-efficient routing protocol in the design of the WSN.Since many differences are existed between the WSN and the other traditional wireless networks,the routing protocols in those wireless networks cannot simply be transplanted to the design of the WSN.This brings new challenges and pressures to the routing technologies for WSN.Therefore,this paper mainly focusing on data reliable transmission and energy-efficiency of routing in WSN,some researches are made.The main work is presented as follow:First,WSN' inherent characteristics are firstly described,which are different from traditional wireless networks.And we analyze some design goal for routing protocol in WSN.Then,based on an analysis of the existing sensor network routing protocols,a comprehensive survey about advantage and disadvantage of them is done, that establish infrastructure for design nice behavior routing techniques.Second,from the point of view of the multi-path routing algorithm which can better enhance data transmission reliability in WSN and on the basis of drawing on the thinking of AOMDV algorithm,a Maximum Link-disjoint Multi-path Routing Algorithm(MLMRA) is presented.MLMRA gives priority to the establishment of the node-disjoint multi-path when established the link-disjoint multi-paths,so reduces the relationship of paths and the probability of Chain disruption of the paths,and improves the stability and reliability of data transmission as well.Third,in order to enhance energy efficiency and postpone WSN lifetime,we present Energy-aware Multi-path Routing Algorithm(EMRA) for the effectiveness of the energy shortage of MLMRA algorithm.In the selection of the data transmission path,the algorithm tries to avoid the low-energy level nodes,and at the same time puts on the remaining energy of nodes and hops as one of the path selection measures. For the reason that not only realize the low-energy consumption of data transmission, but also balance the energy consumption of nodes,effectively extend the life-time of the network.Fourth,we simulate the EMRA algorithm in TOSSIM which is one of simulation tools for WSN.From the point of view of energy effectiveness and transmission reliability in WSN,we comparison and analyze among other ways detailed in network lifetime and Average packet delivery rate,the results prove the effectiveness and validity of our method.