JELE_V1_N2_RP4 Basudeba Behera Purna Chandra Mishra Barsha Pattanaik Journal on Electronics Engineering 2249 – 0760 1 2 30 34 Tandem Queue, Rs Blocking, Bas Blocking, Finite Buffer In this paper, the authors have investigated the waiting time/delay of a broad class of mobile communication systemoriented queuing models. Both exact analytic and approximation algorithm techniques are employed in order to obtain the exact and approximate waiting/delay distribution of those models. They concentrate on probability distribution instead of mean value because a one-point estimate is not sufficient to provide a good performance evaluation. They propose different queuing models in order to describe different characteristics of mobile systems. Different server control mechanisms are implemented in order to optimize channel (or server) utilization. Here the tandem queues with BAS blocking policy are investigated. December 2010 - February 2011 Copyright © 2011 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=1369