Streaming Caching Technologies for Next generation Multimedia Internet

下一代多媒体互联网的流缓存技术

• 批准号: 12650401
• 负责人: YASUDA Yasuhiko
• 金额: $ 2.18万
• 依托单位: Waseda University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12650401/
• 关键词: stream caching; distributed caching; hierarchical caching; web friendly; hierarchical coding; cache replacement; cache pre-fetching; content delivery network; Webキャッシュ; ストリーミング; 階層キャッシュ; Content Delivery Network; プリフェッチ; ルータ; TCP

We investigated technologies on video streaming and related issues as follows:(1) Distributed/hierarchical caching algorithms for video streamingClassical web caching mechanisms cannot be directly applied to video streaming due to huge size of video data. To overcome this problem, several algorithms were investigated, such as splitting video data into small segments and by introduction of hierarchically located cache servers that cooperate in a distributed manner. Results were presented at international conferences and, with merged with the next topic, submitted to IEICE Transactions (accepted).(2) Web-friendly streaming caching algorithmsStream caching technologies should avoid performance degradation of current web caching methods that are widely deployed. We then proposed "web-friendly" stream caching algorithms that exploited statistical characteristics of web objects and streaming objects in a unified manner.(3) Improvement of caching algorithms for hierarchical image formatImproved caching algorithms for hierarchically represented image data format were investigated. Development replacing/pre-fetching algorithm according to preference statistics and theoretical analysis of the web access model were carried out. Results were presented at international conferences, submitted to IEICE Transactions (accepted), and contributed to the above two topics on video stream caching.

(1)视频流媒体的分布式/分层缓存算法由于视频数据量巨大，传统的Web缓存机制不能直接应用于视频流媒体。为了克服这一问题，人们研究了几种算法，如将视频数据分割成小段，以及通过引入以分布式方式协作的分层位置的缓存服务器。结果在国际会议上公布，并与下一个主题合并，提交给IEICE会刊(接受)。(2)Web友好的流缓存算法流缓存技术应避免当前广泛部署的Web缓存方法的性能下降。提出了Web友好的流缓存算法，统一利用了Web对象和流对象的统计特性。(3)层次化图像格式缓存算法的改进研究了层次化图像数据格式缓存算法的改进。开发了基于偏好统计的替换/预取算法，并对Web访问模型进行了理论分析。结果在国际会议上提出，提交给IEICE会刊(接受)，并对上述两个关于视频流缓存的专题作出了贡献。

项目成果

Z.Su, J.Katto, Y.Yasuda, et al.: "An Integrated Scheme to Distribute Segmented Streaming Media over Hierarchical Caches"Proceedings of ICITA 2002. 240-244 (2002)

Z.Su、J.Katto、Y.Yasuda 等人：“通过分层缓存分发分段流媒体的集成方案”ICITA 2002 会议记录。240-244 (2002)

Z. Su, J. Katto, Y. Yasuda, et al.: "Integrated Pre-fetching and Caching Algorithm for Graceful Image Caching"IEICE Transactions on Communications. (to be published).

Z. Su、J. Katto、Y. Yasuda 等人：“用于优雅图像缓存的集成预取和缓存算法”IEICE Transactions on Communications。

山口, 甲藤: "バッファ管理における廃棄確率更新アルゴリズムに関する-検討"電子情報通信学会 春季全国大会 予稿集. B分冊. B7-115 (2001)

Yamaguchi, Koto：“缓冲区管理中丢弃概率更新算法的研究”IEICE 春季全国会议论文集 B. B7-115 (2001)。

Z.Su, J.Katto, Y.Yasuda, et al.: "Performance Improvement of Graceful Caching by Using Request Frequency Based Prefetching Algorithm"Proceedings of IEEE TENCON 2001. 370-376 (2001)

Z.Su、J.Katto、Y.Yasuda 等人：“通过使用基于请求频率的预取算法改进优雅缓存的性能”Proceedings of IEEE TENCON 2001. 370-376 (2001)

S.Zhou, T.Washizawa, J.Katto, Y.Yasuda: "Integrated Pre-fetching and Replacing Algorithm for Graceful Image Caching"IEICE Transactions on Communications. (採録決定). (2003)

S.Zhou、T.Washizawa、J.Katto、Y.Yasuda：“用于优雅图像缓存的集成预取和替换算法”IEICE 通信交易（2003 年）。