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We derive a methodology to determine the effect of per service session admission control on the resource usage in an aggregation network for the delivery of video services. Given the network capacity and the characteristics of the service, we determine the number of subscribers that can be served in the scenarios with and without admission control. The results depend on the activity grade of the subscribers, and on the session blocking probability and/or the packet loss probability that can be tolerated. For a broad range of both probability parameters, the comparison shows a clear benefit of admission control, which permits an increase of the number of subscribers by up to 30%. The benefit of admission control decreases as the subscriber activity grade increases.

Benefit of Admission Control in Aggregation Network Dimensioning for Video Services