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Rate-User-Perceived-Quality Aware Replication Strategy for Video Streaming over Wireless Mesh Networks
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  • Rate-User-Perceived-Quality Aware Replication Strategy for Video Streaming over Wireless Mesh Networks
  • Rate-User-Perceived-Quality Aware Replication Strategy for Video Streaming over Wireless Mesh Networks
저자명
Du. Xu,Vo. Nguyen-Son,Cheng. Wenqing,Duong. Trung Q.
간행물명
KSII Transactions on internet and information systems : TIIS
권/호정보
2011년|5권 11호|pp.2103-2120 (18 pages)
발행정보
한국인터넷정보학회
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정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

In this research, 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 by 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) which includes: 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 smaller storage capacity compared to other existing optimal replication strategies. More importantly, the effect of encoding rate is carefully investigated to show that high encoding rate does not always gain high performance of replication for video streaming.