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DOI: 10.1109/TAES.2022.3227530

Cache Placement in an NDN Based LEO Satellite Network Constellation

Miguel Rodr\'iguez-P\'erezSergio Herrer\'ia-AlonsoAndr\'es Su\'arez-Gonz\'alezJos\'e Carlos L\'opez-ArdaoRa\'ul Rodr\'iguez-Rubio
Dec 2022
摘要
The efforts to replace the successful, albeit aging, TCP/IP Internetarchitecture with a better suited one have driving research interest toinformation-centric alternatives. The Named Data Networking (NDN) architectureis probably one of the main contenders to become the network layer of thefuture Internet thanks to its inbuilt support for mobility, in-network caching,security and, in general, for being better adapted to the needs of currentnetwork applications. At the same time, massive satellite constellations arecurrently being deployed in low Earth orbits (LEO) to provide a backend fornetwork connectivity. It is expected that, very soon, these constellations willfunction as proper networks thanks to inter-satellite communication links.These new satellite networks will be able to benefit from their greenfieldstatus and the new network architectures. In this paper we analyze how todeploy the network caches of an NDN-based LEO satellite network. In particular,we show how we can jointly select the most appropriate caching nodes for eachpiece of content and how to forward data across the constellation in two simplealternative ways. Performance results show that the caching and forwardingstrategies proposed reduce path lengths up to a third with just a few cachingnodes while, simultaneously, helping to spread the load along the network.
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