Abstract
The airspace communication network based on spacecraft has a wide range of applications in regional information enhancement and emergency communication. In this paper, a routing algorithm for congestion degree detection of multipath routing (CD_AOMDV) is proposed. The method of combining the whole congestion degree detection and local congestion degree detection before service initiation is adopted. Timely and accurate judgment of the congestion degree reduced the loss rate of the hot nodes, so the average packet loss rate reduced. Simulation results show that compared with the traditional AOMDV protocol, the CD_AOMDV proposed in this paper has reduced the packet loss and improved delay performance, which is more suitable for the airspace communication network.
Highlights
The spacecraft has the advantages of long stay time, high precision and high coverage area
Simulation results show that compared with the traditional AOMDV protocol, the CD_AOMDV proposed in this paper has reduced the packet loss and improved delay performance, which is more suitable for the airspace communication network
Airspace communication network which is based on spacecraft supports fast access of mobile nodes such as UAVs and ground mobile nodes in the coverage area of the airspace
Summary
The spacecraft has the advantages of long stay time, high precision and high coverage area. Airspace communication network which is based on spacecraft supports fast access of mobile nodes such as UAVs and ground mobile nodes in the coverage area of the airspace. Due to the constantly movement of UAVs and ground mobile nodes, the network topology keeps changing. The on-demand routing protocols are more suitable for airspace communication network. When the frequency of session-initiated or the volume of session increases, it is usual to see link congestion of the links between UAVs with aerostats. In this case, if the aerostats can’t be selected repeatedly when select multipath, the success rate of the session will reduce greatly. The algorithm improves the efficiency of network transmission by detecting the link congestion degree and selecting the path with the lowest congestion degree
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