Abstract of Talk by Otis Jennings

Approximations for Nonstationary Circuit Switched Networks

Department of Industrial and Systems Engineering
Georgia Institute of Technology
Atlanta, GA 30332 

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In this talk we investigate telecommunications systems where the traffic intensity across the network varies in time. To do this, we develop approximation methods to analyze blocking in circuit switched networks with nonstationary call arrival traffic. The methods are generalizations of the pointwise stationary and modified offered load approximations used for the nonstationary Erlang loss model. These approximations reduce the analysis of nonstationary circuit switched networked considerably.

For the special case of a two-link network, we present numerical results to compare the various approximation methods to calculations of the exact blocking probabilities. We also adapt these calculations to approximate the behaviour of rerouting calling traffic(due to link-failure).

With William A. Massey
AT&T Bell Laboratories
PO Box 636
600 Mountain Avenue
Murray Hill, NJ 07974-0636

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