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The objective of the project was to develop a reference end to end hybrid Satellite/Terrestrial network to serve as a platform for prototyping product offerings in the areas of multimedia broadcast, adaptive bitrate streaming, content distribution networks and end to end quality of service management. Specifically the aim has been to enhance the end to end hybrid network to use broadcast techniques to populate network edge CDN appliances which can support and cache (normalised) ABR streaming content, while maintaining good QoE and QoS characteristics.
The project consists of the following work packages:
As of January 2019 the project is complete.
The finished platform demonstrates a number of optimisation techniques which may be applied to such a hybrid network, including media streaming with combined satellite multicast and eMBMS broadcast, access-agnostic edge CDN implementation with support for (and caching of) encrypted content, and optimised adaptive bitrate content delivery to the edge, with real-time transcoding to multiple DASH representations. The project also included work within the QoS area to target engineering tools that may be used initially to assist in evaluating current behaviour within complex hybrid systems, but ultimately to develop into analysis tools for real deployments.
The demonstrator has illustrated the potential bandwidth savings that may be achieved using these techniques, as well as showing the potential improvement in user experience as a consequence of edge caching. Finally it demonstrated how content may be cached independently of the access media initially used to fetch it, and how such content may be prepositioned efficiently.