Routing Architecture Design for the Space-Ground Integrated Information Network

Space-Ground Integrated Information Network is the core infrastructure for information acquisition, distribution, transmission, and application in the future. Routing architecture is the critical part of this network. This paper presents two types of routing architecture, Independent AS routing architecture and Tunnel-encapsulated routing architecture, based on the Border Gateway Protocol for the Space-Ground Integrated Information Network. The path choosing, fault recovery, management and control, and routing scheme of these two architectures are discussed in detail. The analysis shows that the Independent AS routing architecture has an advantage in management and scalability, while the Tunnel-encapsulated routing architecture is more suitable for the early deployment phase of the Space-Ground Integrated Information Network.