Research On Routing Protocol Technology Of UAVs Network

UAVs network is a typical self-organizing network,which has the characteristics of self-organization,centerless,limited bandwidth,dynamic topology and multi-hop,and has great application value.Research on the network architecture and routing protocols of UAVs networks is a hotspot and a difficult point in the research of self-organizing networks.It also has important significance in the military.The main work of this paper is the following aspects.Firstly,based on the seven-layer protocol of OSI network,the network hierarchy of the UAVs network is given.The topology structure of the UAVs network and the motion model of the node are analyzed.According to the characteristics of UAVs network,the system model of UAVs network is built on the OPNET simulation software.The basic principles and advantages of the routing protocols of the ad hoc networks are analyzed,and UAVs networks of different scales are discussed.Secondly,the basic principle of the table-driven routing protocol OLSR is studied,and its advantages and disadvantages are analyzed.Based on the OLSR routing protocol,a table-driven routing protocol based on location and neighbor perception is proposed.The routing protocol changes the data format of the HELLO packet,and the geographic location information of the node is added when the node broadcasts the HELLO packet.Considering the link stability of the routing protocol in the selected MPR set,the stability and efficiency of the communication link are improved by the two link metrics,distance weight and neighbor change rate.And through the network model of UAVs network,the simulation experiment is compared.This protocol has a significantly higher data delivery rate than the existing table-driven routing protocol.Finally,based on ant colony algorithm,a routing protocol suitable for large-scale UAVs network is proposed.Aiming at the disadvantages of excessive routing overhead and unstable link in large-scale networks,an intelligent clustering protocol based on ant colony algorithm is proposed.The algorithm considers the queue waiting time of the signal sent by the node and improves the throughput of the network.By using the Rayleigh distribution model,the signal strength weight model is proposed to improve the stability of the link and the efficiency of communication.Simulation experiments in the network model,compared with the classic reactive routing protocol and other ant colony algorithm routing protocols.The data delivery rate is significantly improved,while reducing network end-to-end delay and routing overhead in the network.