Research On Load Balancing Routing Optimization Of Mobile Ad Hoc Network Based On AODV Protocol

Mobile Ad Hoc network is a unique network in wireless network.In recent years,Mobile Ad Hoc network has been widely concerned and applied by virtue of its advantages of self-organization,no fixed infrastructure,damage resistance and rapid networking.In the mobile Ad Hoc network,when the number of nodes increases gradually,the network traffic will continue to increase,Overload will lead to network congestion,uneven distribution of network load will lead to overload of nodes,excessive energy consumption of nodes,network splitting,and overall performance degradation.Although many algorithms and protocols for load balancing have been proposed,further research is needed in the aspects of routing load,node mobility,link change and routing metric.Therefore,this paper aims at the problem of network load balancing,conducts in-depth research and analysis on network load balancing,and researches and summarizes the routing strategies of mobile network based on load balancing.This paper proposes a new routing metric that takes node mobility and node load into consideration,evaluates the link stability according to node mobility,and adjusts the network load according to the set load grade of node load.The main research content of this paper is as follows:(1)Propose a new routing metric.The routing metric takes routing load parameters and routing mobility parameters as cost functions.Aiming at the problem of network communication performance degradation caused by unstable node fast mobile communication link in mobile network,in order to achieve load balancing,this paper changes the traditional hop count as a metric,introduces node mobility parameters,and loads and nodes mobility.Considering as a routing control parameter,the proposed routing metric is integrated into the AODV protocol to improve its routing strategy,and the LS-AODV routing protocol is proposed.(2)Propose a flood control strategy.In view of the large amount of redundant data packets in the AODV routing protocol,the network resources are consumed.In the route discovery phase,the broadcasted RREQ message is discarded by selecting the optimal flooding range,and redundant packets are restricted to improve routing.performance.The forwarding delay strategy is used in the route response phase to select the best route using the corresponding cost function.(3)Based on the NS2 simulation platform,the network topology map is obtained for the AODV routing protocol and the LS-AODV routing protocol.The two protocols are simulated respectively.The simulation results show that compared with the AODV routing protocol,the routing load and chain are considered at the same time.The path stability LS-AODV routing protocol implements load balancing and can obtain better packet delivery ratio,routing overhead and routing performance.