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User-perceived-quality aware replication strategy for video streaming over wireless mesh networks

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4 Author(s)
Nguyen-Son Vo ; Huazhong Univ. of Sci. & Technol., Wuhan, China ; Xu Du ; Duong, T.Q. ; Wenqing Cheng

In this paper, we consider the replication strategy for the applications of video streaming in wireless mesh networks (WMNs). In particular, we propose a closed-form of optimal replication densities for a set of frames of a video streaming based on exploiting not only the skewed access probability of each frame but also the skewed loss probability and skewed encoding rate-distortion information. The simulation results demonstrate that our method improves the replication performance in terms of user-perceived quality (UPQ) including: 1) minimum average maximum reconstructed distortion for high peak signal-to-noise ratio (PSNR), 2) small reconstructed distortion fluctuation among frames for smooth playback, and 3) reasonable average maximum transmission distance for continuous playback. Furthermore, the proposed strategy consumes small storage capacity requirement for saving the resource of network compared to other existing optimal replication strategies.

Published in:

Wireless Communications and Mobile Computing Conference (IWCMC), 2011 7th International

Date of Conference:

4-8 July 2011