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A call admission control scheme for ATM networks using a simple quality estimate

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4 Author(s)
Murase, T. ; NEC Corp., Kawasaki, Japan ; Suzuki, H. ; Sato, S. ; Takeuchi, T.

The authors propose a call admission control scheme based on a method of estimating cell loss quality for individual bursty traffic sources. The estimate is expressed in terms of virtual cell loss probability, which may be defined by two traffic characteristic parameters alone: peak and mean rate. The approach is suitable for the estimation of real cell loss probability in heterogeneous and homogeneous traffic models when burst length is larger than buffer capacity. The concept of virtual cell loss probability is extended to the individual call level so as to be able to estimate the quality of service (QOS) provided to individual calls. A virtual bandwidth method is used to develop a practical call admission control system. Quality is ensured by combining a traffic clustering scheme, with a scheme for assigning individual clusters to subcapacities of a link. Priority levels are presented in terms of the class of QOS required, i.e., deterministic or statistical, and the allocation of virtual bandwidth is discussed in terms of both QOS class and traffic characteristics

Published in:

Selected Areas in Communications, IEEE Journal on  (Volume:9 ,  Issue: 9 )

Date of Publication:

Dec 1991

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