Research On High-dynamic Routing Technology Of Air-based Communication Network

The space-air-earth integration network uses satellites as communication nodes to establish a space-based information network based on ground networks and space networks.The network covers natural space such as space,air,land and sea,and provides network access infrastructure for users of the space,sky and earth.Compared with the terrestrial network,the integrated network of the space,air and the earth has prominent features of high,far,and wide,and it is of great significance for the communication coverage in remote areas where air,sea,and terrestrial infrastructure are lacking.Civil aviation aircraft,with its large numbers and low time delays,and the advantage of being "relatively insensitive" and gradually demonstrate its advantages over satellite nodes.Replacing most of the LEO satellites as communication access platforms with more and more densely-congested airlines,and making full use of line-of-sight aircraft to form a wide-area space-based wireless communication network have gradually become feasible.This article starts here to study the networking scheme of space-based communication networks.First of all,in order to realize the high coverage of the space-based network communication network,a cluster-type networking architecture is proposed,and loworbit satellite nodes are used to cover the blind area.Afterwards,the classic routing protocols(DSDV,DSR,AODV)are studied and their adaptability in high dyna mic environment is analyzed,which lays the foundation for the research of high dynamic routing protocols.Then,this paper proposes a clustering routing protocol in a highly dynamic environment,and elaborates its operating mechanism in detail,including the node category,the election and maintenance of cluster heads,the structure of the cluster topology table,and so on.In the clustering routing protocol,cluster head election and maintenance are the most important tasks.Considering the stability and lifetime of the network,the cluster head selection method is determined as the LEACH algorithm to meet the requirements.Next,considering the real-time changes in the link quality between network nodes,this paper proposes a Qo S-based route modification strategy and a route modification strategy based on service implementation sensitivity,and normalizes them to a quality assessment model.Q.Realized the evaluation of aircraft-aircraft and aircraft-low-orbit satellite links in the network,and discriminated between realtime services and non-real-time services and adopted different node transmissions.Finally,for this kind of network topological model that the link quality changes in real time,this paper decided to use ant colony algorithm to amend the proposed routing protocol,shorten the path distance,and further improve the network stability.