Video-aware opportunistic network coding over wireless networks

In this paper, we study video streaming over wireless networks with network coding capabilities. We build upon recent work, which demonstrated that network coding can increase throughput over a broadcast medium, by mixing packets from different flows into a single packet, thus increasing the informa...

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Veröffentlicht in:IEEE journal on selected areas in communications 2009-06, Vol.27 (5), p.713-728
Hauptverfasser: Seferoglu, H., Markopoulou, A.
Format: Artikel
Sprache:eng
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Zusammenfassung:In this paper, we study video streaming over wireless networks with network coding capabilities. We build upon recent work, which demonstrated that network coding can increase throughput over a broadcast medium, by mixing packets from different flows into a single packet, thus increasing the information content per transmission. Our key insight is that, when the transmitted flows are video streams, network codes should be selected so as to maximize not only the network throughput but also the video quality. We propose video-aware opportunistic network coding schemes that take into account both the decodability of network codes by several receivers and the importance and deadlines of video packets. Simulation results show that our schemes significantly improve both video quality and throughput. This work is a first step towards content-aware network coding.
ISSN:0733-8716
1558-0008
DOI:10.1109/JSAC.2009.090612