Application of Virtualization and Software Defined Network in Satellite Network

摘要

The integration network of terrestrial and satellite is becoming a new trend in the development of network applications in the future. Software defined network and virtualization is becoming a hot research topic and application of the ground network. It is necessary to study the application of software defined network and virtualization in satellite applications. This paper discusses the software defined networking and network virtualization in satellite network application system architecture. Software defined satellite network will separate the control plane and data plane of satellite network and can on the whole manage and configure the satellite network resources from the whole network so as to realize the optimization of satellite network. The system architecture is described and the design scheme of virtual satellite network is shown. In this paper, the design principle of the satellite OpenFlow switch and controller, the realization methods of network function virtualization and the controller are described in detail. Based on this kind of system architecture, the global dynamic load balancing, routing and resource scheduling algorithms are designed, and the performance analysis and simulation of network delay and throughput are carried out.