Summary
IEICE Information and Communication Technology Forum
2015
Session Number:SESSION4
Session:
Number:SESSION4-6
Call Blocking Probabilities of Multirate Elastic Traffic under the Threshold and Bandwidth Reservation Policies
Ioannis Moscholios, Anthony Boucouvalas, Michael Logothetis, Vassilios Vassilakis,
pp.-
Publication Date:2015-08-31
Online ISSN:2188-5079
DOI:10.34385/proc.22.SESSION4-6
Summary:
We propose a multirate teletraffic loss model of a link that accommodates different service-classes of elastic calls. Calls arrive in the link according to a Poisson process, can tolerate bandwidth compression and have an exponentially distributed service time. When bandwidth compression occurs, the service time of new and in-service calls increases. All calls compete for the available link bandwidth under the combination of the Threshold (TH) and the Bandwidth Reservation (BR) policies. The TH policy can provide different QoS among service-classes by limiting the number of calls of a service-class up to a predefined threshold, which can be different for each service-class. The BR policy reserves part of the available link bandwidth to benefit calls of high bandwidth requirements. The analysis of the proposed model is based on approximate but recursive formulas, whereby we determine call blocking probabilities and link utilization. The accuracy of the proposed formulas is verified through simulation and found to be very satisfactory.