Abstract
(Englisch)
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The key objective of this project is to explore and validate, the deployment/realisation of the digital switchover issue through the design, implementation and evaluation of an infrastructure, which uses a regenerative DVB-T stream for the interconnection of distribution nodes, enabling access to IP services, and digital TV programmes.
In this context, the project will include the implementation, testing and validation of a spectrum efficient terrestrial (DVB-T) network, using real time dynamic management of the available bandwidth, for supporting a variety of heterogeneous bit rote services, like Interactive TV programmes, interactive multimedia services, Internet applications, etc. The use of the DVB-T in regenerative configurations and exploits the networking capabilities of the television stream for the creation of a powerful backbone that interconnects distribution nodes within a city. As these distribution nodes (local networks) make use of broadband access technologies (i.e. the 'local loop', WLAN, LMDS, MMDS, Optical) they enable all citizens to have broadband access to the entire network and to be interconnected. Such a configuration enables for multi-service capability, as the regenerative DVB-T creates a single access network physical infrastructure, shared by multiple services (i.e. TV programmes, interactive multimedia services, Internet applications, etc.). In this context, ATHENA approach of 'Interconnecting Television', proposes the use of the DVB stream for the realisation of Next Generation broadband Networking (NGN) infrastructures with both IPv4 and IPv6, by interconnecting NGN nodes and by utilising regenerative configurations of the DVB-T stream.
The overall architecture of such an infrastructure comprises two core subsystems: I) a number of Cell Main Nodes (CMN), and II) a central broadcasting point. Each CMN enables a number of simple users (geographically neighbouring the CMN) to access IP services hosted by the network.
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