NDN-Based Multimedia Content Distribution in Space-Ground Integration Network

Streaming of multimedia contents over the Internet is experiencing an unprecedented growth, which puts tremendous pressure on terrestrial networks. It is challenging to support multimedia content distribution in short end-to-end delay with limited network resources (e.g., bandwidth). In this context, we study the benefit of adopting the space-ground integration network (SGIN) to alleviate the traffic load of terrestrial networks and provide globally "anywhere-anytime" Internet access. Furthermore, Named Data Networking (NDN), a future network architecture for content delivery, is considered in the SGIN to improve the efficiency of disseminating multimedia contents. Finally, we establish an SGIN platform and conduct simulations based on the platform to compare the multimedia content distribution performance of Internet Protocol (IP) -based architecture and NDN architecture. Simulation results demonstrate that NDN is superior to IP in disseminating multimedia contents in both terrestrial networks and the SGIN. Besides, the SGIN has a better performance than terrestrial networks in terms of end-to-end delay and throughput.