基于随机模型的VoD代理服务器架构可减少客户端等待时间
Stochastic Model Based Proxy Servers Architecture for VoD to Achieve Reduced Client Waiting Time
摘要：
在视频点播系统中，主视频库可能远离用户，并且通常具有有限的流传输容量。由于高质量视频的大小是巨大的，它需要高带宽用于在互联网上流式传输。为了实现更高的视频命中率，减少客户端等待时间，可以使用分布式服务器的架构，其中多个本地服务器被放置在客户端附近，并且基于它们的区域需求，从主服务器动态地缓存视频内容。随着代理服务器成本的降低和对减少等待时间的需求日益增加，人们不断探索新的体系结构，提出了新的解决方案。本文提出了一种新的三层体系结构，包括主多媒体服务器、跟踪器和代理服务器。该架构旨在优化客户端等待时间。我们还提出了一个有效的前缀缓存和负载分担算法在代理服务器分配缓存根据区域流行的视频。仿真结果表明，它实现了显着降低客户端的等待时间，与其他现有的算法相比。
英文摘要：
In a video on demand system, the main video repository may be far away from the user and generally has limited streaming capacities. Since a high quality video's size is huge, it requires high bandwidth for streaming over the internet. In order to achieve a higher video hit ratio, reduced client waiting time, distributed server's architecture can be used, in which multiple local servers are placed close to clients and, based on their regional demands video contents are cached dynamically from the main server. As the cost of proxy server is decreasing and demand for reduced waiting time is increasing day by day, newer architectures are explored, innovative schemes are arrived at. In this paper we present novel 3 layer architecture, includes main multimedia server, a Tracker and Proxy servers. This architecture targets to optimize the client waiting time. We also propose an efficient prefix caching and load sharing algorithm at the proxy server to allocate the cache according to regional popularity of the video. The simulation results demonstrate that it achieves significantly lower client's waiting time, when compared to the other existing algorithms.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
