A global Video-on-Demand Architecture Based on a Novel Constellation Composed of Quasi-Geostationary Satellites

o Satellite networks are going to play an indispensable role in the deployment of ubiquitous broadband multimedia systems. In this context, this paper considers a recently-proposed satellite constellation composed of Quasi GeoStationary Orbit (Quasi-GSO) satellites to provide a global and cost-effective Video-on-Demand (VoD) service. The main advantages of the constellation consist in its ability to provide global coverage with a signicantly small number of satellites while, at the same time, maintaining high elevation angles. Making use of these advantages and based on a combination of this Quasi-GSO satellites constellation and terrestrial networks, this paper proposes an architecture for building a global, large-scale, and cost-efcient Video-on-Demand (VoD) system. The entire architecture is referred to as iTheatre in the Skyi. Keywordsn VoD, Quasi-GSO satellites, GEO, LEO, and MEO satellite systems.

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