Computer Science – Networking and Internet Architecture
Scientific paper
2007-06-11
Computer Science
Networking and Internet Architecture
11 pages, 8 figures (14 subfigures)
Scientific paper
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 (i) the decodability of network codes by several receivers and (ii) the importance and deadlines of video packets. Simulation results show that our schemes significantly improve both video quality and throughput.
Markopoulou Athina
Seferoglu Hulya
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