Research On Distributed Routing Algorithm In Mobile Ad Hoc Network

Mobile Ad Hoc network(MANET),as a complex distributed wireless network,is the best choice for UAV group network communication because of its characteristics such as unstable node location,fast network topology change,wireless Ad Hoc network,decentralization and multi-hop transmission.In the case of sudden earthquake and other natural disasters,UAV group is the first choice for emergency communication,which inevitably requires UAV group to be able to quickly establish network,dynamically perceive network situation,and communicate without base station.Therefore,in the face of natural disasters and other emergency environments,the rapid transmission and interaction of information among UAV groups is particularly important.It is because of the characteristics of the network node location is not fixed and the network topology changes quickly that the existing routing algorithm can not perform well in the MANET network.Routing algorithms directly reflect performance indicators such as transmission delay,network congestion,packet loss rate,etc.The quality of routing algorithms determines the overall performance of the network.Aiming at the problems of large network delay and high network resource waste existing routing algorithms in MANET network,this paper deeply studies the routing algorithm in this network,and its main work and innovations are as follows:1.Conducted in-depth research on the existing unicast routing algorithm in MANET network,and made simulation comparison on NS3 simulation platform,compared and analyzed the advantages and disadvantages of algorithm performance from the obtained experimental results,and screened out the optimal unicast routing algorithm.2.This paper innovatively proposes a PB-AODV routing algorithm based on the rapid discovery of complex node degree.The load balancing optimization mechanism is used for link congestion control,which solves the problem of large MANET network delay.Theoretical analysis and experimental results show that the algorithm can effectively improve the performance of network delay,network throughput and packet delivery rate.3.In the high mobile UAV network scenario,a distributed routing algorithm based on reputation mechanism--RBDR is designed to solve the problem of excessive waste of network resources in MANET.The simulation results show that the algorithm has significant performance improvement in network resource consumption,network time delay and average hop number.4.Build the earthquake natural disaster emergency communication simulation system,and apply the RBDR routing algorithm into the system.The test results show that the routing algorithm has better performance.