Techniques for Improving the Capacity of Video-on-Demand Systems - System Sciences, 1996., Proceedings of the Twenty-Ninth Hawaii International Conference on ,

نویسنده

  • Hari Kalva
چکیده

In this paper we present two techniques to improve the capacity of video on demand systems. Video on demand is an electronic video rental sysrem in which clients request and play videos on-demand. Video on demand system can be implemented over an existing cable TV network or an upgraded ADSL network. The two techniques used to improve the capacity of video on-demand systems are segmentation and multicasting. Segmentation consists of dividing the video into several fired length segmenrs. and then transmitting the segments at regular intervals instead of transmitting the entire video continuously. Multicasting assumes that each subscriber has a limited storage space, so same video segments can be multicast to subscribers simultaneously. Results of a comprehensive simulation study presented in the paper show a signifcant improvement in the capacity of the system when these two techniques are applied. In evaluating video on-demand systems we considered the following parameters: the number of users supported, the number of videos played per day, and the number of requests rejected per day.

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تاریخ انتشار 2004