H. Hlavacs and G. Aschenbrenner (Austria)
Computer Networks, Content Delivery Network, Satellite
A content delivery network (CDN) circumvents the congested Internet by pushing important content to large caches at the network edges. Content, produced at single points of origin, is sent to multiple points at the network edges, constituting point-to-multipoint (multicast) connections. For international wide area networks, such a scheme is most effectively implemented by using the intrinsic multicasting capabilities of a satellite. In this paper we describe the European project CODIS, which aims at implementing and testing a satellite based content delivery network. We also describe a framework for measuring the quality of service of CODIS and define rules for digital television broadcasters, yielding optimal bitrates to use in order to guarantee customer satisfaction.
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