A Cost Comparison of Distributed and Centralized Approaches to Video-on-Demand
A Cost Comparison of Distributed and Centralized Approaches to Video-on-Demand
复制标题
分布式和集中式视频点播方法的成本比较
DOI：
10.1109/49.508287
复制
发表时间：
1996
期刊：
影响因子：
--
通讯作者：
G. Anido
中科院分区：
文献类型：
--
作者：
S. Barnett;G. Anido
随着视频点播（VoD）被视为宽带综合业务数字网（B-ISDN）部署的驱动力之一，一个重要的问题是如何最有效地提供广域VoD服务。VoD系统成本的一个主要贡献者是存储。该服务的性质要求从位于网络内的视频服务器提供大量存储和带宽。我们研究的存储在这样的服务器的成本，并制定了一个有效的分配方案，旨在最大限度地减少这一成本。使用该方案，集中式和分布式的方法来VoD进行了比较。我们的结论是，一个分布式的存储方法的成本不超过一个集中的方法，并提供了相当大的优势，在带宽要求和服务质量。
With video-on-demand (VoD) regarded as one of the drivers for the deployment of broadband integrated service digital networks (B-ISDNs), an important issue is how to provide wide area VoD services most efficiently. A large contributor to the cost of a VoD system is storage. The nature of the service requires massive amounts of storage and bandwidth to be supplied from a video server located within the network. We examine the costs of storage in such servers and develop an efficient allocation scheme designed to minimize this cost. Using this scheme, centralized and distributed approaches to VoD are compared. We conclude that a distributed approach to storage costs no more than a centralized approach and offers considerable advantages in terms of bandwidth requirements and service quality.