Title :
Performance modeling of video-on-demand systems in broadband networks
Author :
Wong, Eric Wing Ming ; Chan, Sammy Chi Hung
Author_Institution :
Dept. of Electron. Eng., City Univ. of Hong Kong, Kowloon, China
fDate :
7/1/2001 12:00:00 AM
Abstract :
A video-on-demand (VoD) system allows a viewer to choose a video of his choice such as movies, electronic encyclopedia, or educational videos, which is delivered to him real time via a network. This paper is a performance study of a distributed video server system in a fully connected backbone network. Under the assumptions of uniform loading and symmetrical network, analytical models are proposed for two server selection strategies (random and least loaded) and for two reservation schemes (the strict reservation and the residual reservation). The models can be used to determine the call blocking probability and the requirements of network bandwidth given the capacity of video servers. In addition, our models provide a useful tool for VoD operators to design and dimension their systems
Keywords :
broadband networks; distributed processing; probability; video on demand; video servers; VoD systems; analytical models; backbone network; broadband networks; call blocking probability; distributed video server system; educational videos; electronic encyclopedia; least loaded server selection; movies; network bandwidth; performance modeling; random server selection; residual reservation; strict reservation; symmetrical network; system design; system dimensioning; uniform loading; video servers; video-on-demand systems; Bandwidth; Broadband communication; Encyclopedias; Intelligent networks; Motion pictures; Network servers; Real time systems; Spine; Telecommunication traffic; Video on demand;
Journal_Title :
Circuits and Systems for Video Technology, IEEE Transactions on
