Research On Energy Efficient Routing Protocol With Energy Balance In Wireless Mesh Network

Wireless Mesh Network(WMN)has strong application prospects in daily life due to its advantages of low deployment cost,strong self-organization and wide spread.WMN is known as one of the most valuable wireless technologies in contemporary wireless networks,and is the key research direction of wireless network technology.During the rescue and disaster relief,communication can be achieved by using a battery-powered Wireless Mesh Network.In the temporary battery-powered Wireless Mesh Network,since the power of the Mesh Router is not easy to replenish,in order to extend the network use time,how to reduce the energy consumption of nodes under the premise of ensuring network performance has become a key consideration in many research and practice.At present,the routing protocol used in Wireless Mesh Network is not designed for the network structure,and there are great shortcomings in energy saving and transmission efficiency.The energy-efficient routing protocol can ensure the transmission performance of the Wireless Mesh Network,reduce the energy consumption of nodes,and extend the network usage time.Aiming at battery-powered Wireless Mesh Networks,starting from the equalization of node energy consumption,this paper proposes a routing protocol that comprehensively considers node location and energy for hybrid Wireless Mesh Networks and backbone Wireless Mesh Networks,and adopts multi-path packet transmission mechanism,ant colony algorithm and cluster head rotation mechanism to achieve the energy consumption balance of nodes in the network and prolong the network survival time.The main work and innovation points of this paper are as follows:1.Aiming at the hybrid wireless mesh network with dynamic change of network structure,a multipath transmission routing protocol based on energy balancing(Energy and Depth-AOOMDV,ED-AOMDV)is proposed.Based on the route discovery process of AOMDV,a flag bit is added to the RREQ routing request packet to mark the type of the previous hop,which reduces the number of client nodes in the path and enhances the reliability of the path.In the selection of path,the different characteristics of router nodes and client nodes are considered,for router nodes,the size of the remaining energy and the number of hops from the gateway are comprehensively considered,while the client node considers the remaining energy and queue length.After the path is established,select the three paths with the largest weight values among the available paths,reasonably allocate the packets according to the measured size,and adopt the multi-path parallel transmission method to achieve the energy balance of the path.The simulation results show that the protocol improves the network performance such as energy consumption,packet loss rate,and delay.2.Aiming at the backbone mesh network with relatively stable network structure,considering the stability of the network structure,an energy balancing routing protocol based on clustering(Ant Clustering Multipath Routing Protocol,ACMP)is proposed.In the selection of the cluster head,considering the remaining energy of the node itself and the energy consumption of neighboring nodes,the regional load is measured according to the degree of regional energy consumption,and the node with low regional load and high residual energy is selected to become the cluster head.The asymmetric clustering method is adopted to divide into clusters of different sizes according to the position of the cluster head from the gateway.When nodes in a cluster communicate,on-demand routing combined with ant colony algorithms is used to update pheromones according to the distance and energy value of the next hop to obtain the best transmission path,and nodes in different clusters communicate through cluster heads.The routing protocol effectively solves the problem of network division caused by the imbalance of the remaining energy of routers in the backbone Mesh Network,so as to maintain the topology of the network.Simulation experiments show that the protocol can balance the energy consumption of nodes in the network,avoid network division problems caused by premature death of router nodes,and prolong the survival time of the network.