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Optimal video placement for hierarchical video-on-demand systems

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2 Author(s)
Ren-Hung Hwang ; Dept. of Comput. Sci. & Inf. Eng., Nat. Chung Cheng Univ., Chia-Yi, Taiwan ; Youn-Chen Sun

In the past three years, we have been implementing a VOD system over ATM networks based on a hierarchical three-level network architecture. One of the most important design problems is how to organize video programs stored at different level of servers. We propose an optimal video placement strategy which gives the optimal number of video copies should be stored at each level of server such that the cost function can be minimized while a lower bound of the request rejection probability for each video is guaranteed. Our major contribution is that we model the time-variant-request arrivals as a non-homogeneous Poisson process

Published in:

Computer Communications and Networks, 1998. Proceedings. 7th International Conference on

Date of Conference:

12-15 Oct 1998