Estimators of the retrial rate in M/G/1 retrial queues

In this article we analyze the M/G/1 retrial queue from a statistical viewpoint. Assuming that retrials axe exponentially distributed we focus on the estimation of the retrial parameter for constant and non-constant retrial policies, including the non-ergodic case. We consider different estimators and compare their asymptotic variances. We test numerically the accuracy of the proposed estimators.