Design and Implementation of LEO Micro-Satellite Network Routing Protocol based on Virtual Topology

According to the typical constellation configuration, this paper analyzes the constellation network topology, and designs a routing protocol with convergence capabilities and a Media Access Control layer protocol which uses time division multiple access to allocate different time slots to control data flow. A routing mechanism with a virtual topology is established, and a static routing table is set according to the predictable characteristics of the orbit, which is suitable for the same orbit as well as for different orbits. This article uses OPNET simulation software to model the entire network system, simulate the multi-hop constellation network, and obtain and analyze the network's time delay, throughput and other indicators. The simulation results show that the routing protocol has a good performance in the constellation network.