Performance studies of networked video-on-demand systems

Proceedings. 14th International Conference on Computer Communications and Networks, 2005. ICCCN 2005. Pub Date : 2005-10-31 DOI:10.1109/ICCCN.2005.1523892

V. Tokekar, A. Ramani, S. Tokekar

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引用次数: 3

Abstract

In a multimedia service such as video-on-demand system, video streaming requires allocation of several communication channels. The overall cost of establishing a video-on-demand system also includes the channel cost. Several caching and batching schemes have been proposed in literature for the optimal utilization of these channels. A viewer is served with a mix of main and small (e.g. advertisement) movies. The requested movies not necessarily will be of same duration. This study deals with the system having limited number of channels and servicing of requests for mixed movies of different durations. The system is modeled for its behavior with a continuous time Markov chain (CTMC) process. The performance measures such as channel utilization, number of channels in use, blocking probability of channels, cost and duration after which the proposed system starts yielding profit etc. are quantified in terms of various design parameters like, total number of channels, users request arrival rate, and batching interval, request service rate etc.

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网络视频点播系统的性能研究

在视频点播系统等多媒体业务中，视频流需要分配多个通信信道。建立视频点播系统的总成本还包括频道成本。文献中已经提出了几种缓存和批处理方案来优化利用这些通道。观众可以看到主要电影和小电影(如广告)的混合。所要求的电影时长不一定相同。本研究涉及频道数量有限的系统和不同时长的混合电影的服务请求。用连续时间马尔可夫链(CTMC)过程对系统行为进行建模。通过各种设计参数，如信道总数、用户请求到达率、批处理间隔、请求服务率等，对信道利用率、正在使用的信道数量、信道阻塞概率、系统开始产生利润的成本和持续时间等性能指标进行量化。

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. 14th International Conference on Computer Communications and Networks, 2005. ICCCN 2005.

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