A network coding scheduling for Multiple Description video streaming over wireless networks

Claudio Greco (1, 2) , Irina Delia Nemoianu (1, 2) , Marco Cagnazzo (1, 2) , Beatrice Pesquet-Popescu (1, 2)

1 MM - Multimédia
2 TSI - Département Traitement du Signal et des Images

Network coding (NC) can achieve the maximum information flow in a network by allowing nodes to combine received packets before retransmission. Several works have shown NC to be beneficial in wireless networks, but the delay introduced by buffering before decoding raises a problem in real-time streaming applications. Here, we propose a framework for video delivery in wireless networks that combines Expanding Window Network Coding (EWNC), Multiple Description Coding (MDC), and a novel Rate-Distortion Optimised (RDO) scheduling algorithm that optimises the order in which the video packets are included in the coding window at the current sending opportunity. Results show that our approach consistently outperforms both EWNC applied on single description coding (SDC) and EWNC applied to MDC when a trivial scheduling is used.

Mots clés: Network coding; multiple descriptions; video coding; wireless networks; scheduling

Domaines: Multimédia [cs.MM]

Claudio Greco, Irina Delia Nemoianu, Marco Cagnazzo, Beatrice Pesquet-Popescu. A network coding scheduling for Multiple Description video streaming over wireless networks. European Signal Processing Conference (EUSIPCO), Aug 2012, Bucarest, Romania. pp.1915-1919. ⟨hal-00781305⟩