A hierarchical network storage architecture for video-on-demand services

Proceedings of LCN - 21st Annual Conference on Local Computer Networks Pub Date : 1996-10-31 DOI:10.1109/LCN.1996.558164

Ying-Dar Lin, H. Lai, Y. Lai

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引用次数: 29

Abstract

Recent advances in cable TV networks and multimedia technologies open the possibilities for network/service/content providers to offer residential customers with video-on-demand services. However, the mass storage system in supporting such services demands proper organization and management. We present a three-level hierarchical network storage architecture for the video-on-demand storage system. At the first-level (local service center, LSC) a limited number of programs with high viewing probabilities are stored while at the second-level (local central service center, LCSC) a few programs with second high viewing probabilities are stored. The third-level (central service center, CSC) contains all programs provided in the system. Based on this architecture and the program viewing probability distribution function, we use a minimum-cost function to find out the number of programs stored in the two service centers (LSC and LCSC) and the number of links among these three service centers. We also describe two program reallocation algorithms which swap programs between service centers according to the change in user request patterns.

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视频点播服务的分层网络存储体系结构

有线电视网络和多媒体技术的最新发展，使网络/服务/内容供应商有可能向住宅用户提供视频点播服务。但是，支持这些业务的大容量存储系统需要适当的组织和管理。提出了一种视频点播存储系统的三级分层网络存储体系结构。在第一级(本地服务中心，LSC)存储具有高观看概率的有限数量的节目，而在第二级(本地中央服务中心，LCSC)存储具有第二级高观看概率的少数节目。第三层(中央服务中心，CSC)包含系统提供的所有程序。基于该体系结构和节目观看概率分布函数，利用最小代价函数求出两个服务中心(LSC和LCSC)存储的节目数量以及这三个服务中心之间的链接数量。我们还描述了两种程序重新分配算法，该算法根据用户请求模式的变化在服务中心之间交换程序。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Proceedings of LCN - 21st Annual Conference on Local Computer Networks

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