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Performance Improvement of Video Prefix-caching Techniques  

Lim, Hyo-Taek (동서대학교 디자인&IT전문대학원 유비쿼터스 IT학과)
They, Yu-Shu (동서대학교 디자인&IT전문대학원 유비쿼터스 IT학과)
Lee, Hoon-Jae (동서대학교 컴퓨터정보공학부 정보네트워크공학)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.32, no.7B, 2007 , pp. 431-437 More about this Journal
Abstract
Web proxy caching provides an effective way to reduce access latency and bandwidth requirement. In particular, prefix caching is considered as an alternative for improving video delivery over wide area networks because video objects are usually too large to be cached in their entirety. Nevertheless, many studies have pointed that the user-perceived latency is often not dominated by object transmission time, but rather by setup process such as TCP connection time that precedes it. We propose pre-connecting techniques and show that the techniques can be used efficiently in TCP splicing. Our analysis shows the pre-connection significantly reduces start-up latency and TCP connection time in simple analytical model. The deployment of the proposed pre-connection does not require protocol modification or the cooperation of other entities.
Keywords
Prefix Caching; TCP splicing; Proxy; Video; Streaming;
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