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Erschienen in:
2012 | OriginalPaper | Buchkapitel
Broadcasting XORs: On the Application of Network Coding in Access Point-to-Multipoint Networks
verfasst von : Kerim Fouli, Jérôme Casse, Ivan Sergeev, Muriel Médard, Martin Maier
Erschienen in: Multiple Access Communications
Verlag: Springer Berlin Heidelberg
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We investigate network coding (NC) in access point-to-multi-point (PMP) broadcast networks. Characterized by a shared unicast upstream channel and a time-shared broadcast downstream channel, PMP networks are widely deployed in optical and wireless access networks. We develop a queuing-theoretic model of NC at the medium access control (MAC) sublayer and analyze the impact of NC on packet delay. Our analysis is validated through discrete-event simulation and demonstrates significant delay advantages for NC under high loads and localized traffic.