Research On The Key Technology Of High-Altitude And High-Speed Mobile Node Ad Hoc Network

In recent years,with the rapid development of air transport industry and the rapid rise of UAV field,mobile ad hoc network technology has gradually become a research hotspots of researchers.At present,the research on MANET is not mature enough and its development is not perfect.Especially in the filed of high-altitude and high-speed mobile node MANET,there are still many challenges,such as drastic changes in the topology and limited node resources.This requires that the relevant network protocols should have low computational complexity,low energy consumption,etc.while completing the established tasks.This paper proposes an optimal route acquisition algorithm based on topology control for high-altitude and highspeed mobile node ad hoc network,and designs a hybrid routing protocol that conforms to high-altitude and high-speed scenarios.Finally a concrete implementation method is given.Firstly,this paper introduces the wireless channel model,mobility model and energy consumption model of high-altitude and high-speed mobile node ad hoc networks.Based on this,the network model of highaltitude and high-speed mobile nodes is presented.In this paper,the relationship between transmission power,received power and path loss in the high-altitude and high-speed mobile node ad hoc network is analyzed in detail,as well as the main energy consumption in communication.The method of calculating the weight of network topological is given.Finally,the network model of this paper is designed and abstracted into network topological graph.Secondly,this paper studies the optimal routing acquisition algorithm based on topology control in highaltitude and high-speed mobile node ad hoc network.Firstly,the significance and basic research methods of topology control in high-altitude and high-speed mobile node ad hoc network are analyzed in detail.The concept of connectivity index is given and the topology control algorithm based on connectivity index is given.The simulation results show that the algorithm can effectively reduce the delay and energy consumption while ensuring network connectivity.Then,the application of Dijkstra algorithm in mobile ad hoc networks is analyzed in detail,and it is pointed out that there are some problems in Dijkstra algorithm,such as large search area and too large computation load,which can not meet the computing speed requirements of nodes in high-speed mobile scenarios.To solve these problems,on the basis of topology control based on connectivity index,an optimal routing acquisition algorithm based on A-star algorithm is proposed.The analysis results show that it can significantly reduce the search area and computational complexity,in the scenario where the node moves at a high-speed,the optimal route can be obtained in a timely manner while reducing energy consumption.Then,based on the optimal routing acquisition algorithm based on topology control,a hybrid routing protocol based on the optimal routing acquisition algorithm and its optimized method in the high-altitude and high-speed mobile node ad hoc network are proposed.Through the detailed analysis of the proposed routing protocol,it points out that there are problems of the contention and key nodes that often appear in the traditional mobile ad hoc networks.For such problems,the shortcomings of the classic multi-path delay response strategy in solving such problems are discussed in detail,and on this basis,an innovative solution algorithm is proposed.The problem of the key nodes is solved by considering the residual energy of the nodes into the weights,and the problem of contention is solved by setting a temporary fault node based on the routing protocol.The simulation results show that the optimized routing protocol proposed in this paper can effectively reduce the amount of computation,reduce network energy consumption and prolong network lifetime.It is very suitable for high-altitude and high-speed mobile node ad hoc networks.Finally,the paper introduces the implementation of high-altitude and high-speed mobile node ad hoc network.Firstly,the physical map and basic architecture diagram of the hardware platform are introduced.The design method of the frame structure and the implementation method of the main modules are pointed out,so that the algorithms and protocols proposed in this paper can be realized.