Satellite network architecture based on SDN and ICN technologies

Abstract

The invention discloses a satellite network architecture based on SDN and ICN technologies, comprising: an application layer, a control layer and a forwarding layer, wherein the application layer implements services such as content caching, name resolution, message routing and security; the northbound interface between the application layer and the control layer implements the deployment of the services; the control layer is hierarchically distributed, the internal controllers communicate through an east-west interface, and each controller provides an open interface to implement the programmable function of the application layer to the controller; the forwarding layer includes a low-track OpenFlow-based satellite node and a ground OpenFlow switch, and the layer implements message forwarding according to the flow table delivered by the control. The architecture improves the speed of network data transmission by utilizing the characteristics of ICN buffering while simplifying satellite network management through simplifying the characteristics of SDN transfer control. And through this combination, the deployment of ICN is capable of minimizing the modification of network protocols and maximizing the compatibility with existing network infrastructure.

Description

technical field [0001] The present invention relates to the communication field, in particular to a satellite network architecture based on SDN and ICN technologies. Background technique [0002] As a future network architecture, SDN decouples data forwarding and control at the network layer, and realizes rapid deployment of new services through the programmable features of the controller. ICN uses "content" to replace the "IP" layer, and improves the speed of network transmission data by taking advantage of the network's inherent characteristics of content request aggregation, data broadcasting, and caching. However, as a clean-state future network, the direct realization of ICN is restricted by various factors. [0003] The SDN-based satellite network architecture concentrates the functions of data routing, resource allocation, network faults and security monitoring in the satellite network on the controller under the idea of ​​software-defined network, thus simplifying t...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of complex traditional space-ground integrated network control and business deployment, and large delays in requests for streaming media data such as video in a big data environment, this application provides a satellite network architecture ContentSDSN based on SDN and ICN technologies. The feature of transfer control separation simplifies satellite network management while using the feature of ICN cache to improve the speed of network data transmission

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