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Proceedings Paper

Video streaming systems with cooperative caching mechanisms
Author(s): Naoki Wakamiya; Masayuki Murata; Hideo Miyahara
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Paper Abstract

In this paper, we investigate mechanisms for the video streaming system where proxies cooperate to provide users with low-latency and high-quality services under heterogeneous and mobile environment where hosts have different capabilities and dynamically change their locations. The proxy is capable of adapting incoming or cached video data to user's demand by means of transcoders and filters. With such proxies, heterogeneous QoS requirements on the delivered stream can be fully satisfied by preparing high-quality video data in the local cache buffer and adjust them to the requirements. On receiving a request from a user, the proxy first checks the cache. If no appropriate data is available, it retrieves the video data of the satisfactory quality from the video server or proxies nearby. The proxy communicates with the others and finds an appropriate one for data retrieval by taking into account the transfer delay and the video quality. We propose a cooperative video caching mechanism for the video streaming system and evaluate the performance in terms of the delay introduced and the video quality.

Paper Details

Date Published: 1 July 2002
PDF: 10 pages
Proc. SPIE 4862, Internet Multimedia Management Systems III, (1 July 2002); doi: 10.1117/12.473046
Show Author Affiliations
Naoki Wakamiya, Osaka Univ. (Japan)
Masayuki Murata, Osaka Univ. (Japan)
Hideo Miyahara, Osaka Univ. (Japan)

Published in SPIE Proceedings Vol. 4862:
Internet Multimedia Management Systems III
John R. Smith; Sethuraman Panchanathan; Tong Zhang, Editor(s)

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