Network coding multicast in satellite networks

Authors:
Fausto Vieira;João Barros
Affiliations:
Instituto de Telecomunicações, Faculdade de Engenharia da Universidade do Porto, Porto, Portugal;Instituto de Telecomunicações, Faculdade de Engenharia da Universidade do Porto, Porto, Portugal
Venue:
NGI'09 Proceedings of the 5th Euro-NGI conference on Next Generation Internet networks
Year:
2009

Citing 3
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Abstract

The broadcast nature of satellite networks such as DVB-RCS based systems provides a highly effective medium for content distribution, especially in the case of geographically scattered clients. Non-real-time services typically rely on application level protocols that often use forward error correction (FEC) and carousel data cycling schemes in unidirectional links. The presence of a feedback channel in satellite networks is mostly unexploited in the context of reliable multicast services. We show that network coding protocols offer a native and transparent solution for reliable multicast over satellites. When employing a feedback channel, network coding can reach near real-time performance at an efficiency level close to known theoretical bounds for lossy satellite links.