Hybrid ARQ for Robust Video Streaming Over Wireless LANs
ITCC '01 Proceedings of the International Conference on Information Technology: Coding and Computing
A high-throughput path metric for multi-hop wireless routing
Proceedings of the 9th annual international conference on Mobile computing and networking
ExOR: opportunistic multi-hop routing for wireless networks
Proceedings of the 2005 conference on Applications, technologies, architectures, and protocols for computer communications
Trading structure for randomness in wireless opportunistic routing
Proceedings of the 2007 conference on Applications, technologies, architectures, and protocols for computer communications
Multicast and unicast real-time video streaming over wireless LANs
IEEE Transactions on Circuits and Systems for Video Technology
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Forward Error Correction (FEC) coding and Automatic Repeat reQuest (ARQ) are two commonly used techniques to tackle packet erasures in wireless video streaming. To preserve flexibility while reducing end-to-end latency, Hybird ARQ (HARQ) has been proposed as an alternative that combines the advantages of FEC and ARQ. This paper presents Cooperative Hybrid ARQ (CHARQ) that can further boost wireless video streaming quality. CHARQ takes advantage of the fact that, in the wireless environment, broadcast is free (from the sender's point of view) and that errors are location dependent so an intermediate proxy that overhears the source's transmission may transmit on behalf of the source to increase throughput efficiency. Simulation results show improved performance with the aid of cooperative proxies.