Effective Bandwidth Estimation in Highly Reliable Regenerative Networks

In this paper, we study the accuracy of different estimators of the effective bandwidth (EB), i.e. a required server capacity C to guarantee a given QoS requirement. We assume that the input sequence is regenerative and study the accuracy of the estimator which is based on the actual regeneration cycles of the basic process describing dynamics of the server. Then, by simulation, we compare this estimator with alternative estimators. In particular, we compare the property of the regeneration-based estimation and the estimation obtained by the so-called Batch Means method. It is shown that the regeneration-based estimator of C in all cases overestimates predefined QoS requirement. Then we discuss how this property can be applied to calculate the required EB for the components of highly reliable telecommunication systems.