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Blocking Probabilities in Multi-service Systems with Preemptive Scheduling

Authors:
Shuna Yang
Norvald Stol

Keywords: Markov chian; Preemptive scheduling; blocking probability; service differentiation

Abstract:
This paper investigates blocking probabilities in multiservice communication systems, in which the preemptive scheduling is adopted to implement service differentiation. A novel approximation model is proposed. In contrast with existing multi-dimensional Markov model, which focuses on analyzing the small system with only two service classes and results in nonclosed form expressions of blocking probabilities, our model has three major advantages: 1) it is applicable to analyzing a general multi-service scenario, independent of the number of service classes and resources; 2) the closed form expressions of blocking probabilities can be derived directly; 3) this model shows excellent extensibility for analyzing larger system which supports more service classes or common resource units. The analytical values are compared with simulation results for two- and threeservice systems. Results show that the proposed model provides a high degree of accuracy in the blocking probabilities under different scenarios.

Pages: 7 to 12

Copyright: Copyright (c) IARIA, 2014

Publication date: February 23, 2014

Published in: conference

ISSN: 2308-4022

ISBN: 978-1-61208-322-3

Location: Nice, France

Dates: from February 23, 2014 to February 27, 2014