An adaptive multi‐hop forward error correction protection scheme for video streaming over wireless mesh networks
Ming‐Fong Tsai, Ce-Kuen Shieh, Wen-Shyang Hwang, Der‐Jiunn Deng · International Journal of Communication Systems · 2009
Abstract Traditional forward error correction (FEC) mechanisms can be divided into end‐to‐end FEC protection schemes and hop‐by‐hop FEC protection schemes. The end‐to‐end FEC protection schemes over‐allocate FEC redundancy to each link and may induce a self‐congestion effect in a link. The hop‐by‐hop FEC protection scheme incurs a long end‐to‐end delay that harms the video performance at the video receiver. Accordingly, the Adaptive Multi‐Hop FEC (AM‐FEC) protection scheme is proposed in this paper to improve the quality of video streaming data over Wireless Mesh Networks by means of simultaneously minimizing the end‐to‐end delay and reducing the FEC computational cost. The AM‐FEC protection scheme uses a heuristic algorithm to minimize the number of FEC‐encoded segments between the video sender and receiver. Moreover, according to the decodable frame rate the AM‐FEC protection scheme can dynamically adjust FEC redundancy on each link to outperform end‐to‐end FEC protection schemes and hop‐by‐hop FEC protection schemes. In the experiments, the AM‐FEC protection scheme achieves timely loss recovery for delay‐sensitive video streaming and outperforms traditional FEC protection schemes in terms of video peak signal‐to‐noise ratio. Copyright © 2009 John Wiley & Sons, Ltd.