Simulation Of Video-On-Demand Traffic (2001)
By Mark Cronshaw, Ph.D. & Victoria Okeson, AT&T Broadband Labs, Westminster, CO
This paper describes a discrete-event simulation model of VOD traffic in a system with a server and hierarchical network. The model predicts the magnitude and location of blocking as a function of the demand for VOD sessions and their durations. We found that an Erlang-B model may overestimate the blocking probability, since it is based on a statistical equilibrium that may not be reached with time-varying VOD traffic.
The model provides an inexpensive way to explore various network configurations and modulation schemes. As such, it can be very useful for VOD capacity planning.
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