Robust dynamic Call Admission Control framework for prioritised multimedia traffic in wireless cellular networks

Authors:
Nidal Nasser;Hossam Hassanein
Affiliations:
Department of Computing and Information Science, University of Guelph, Guelph, Ontario N1G 2W1, Canada.;School of Computing, Queen
Venue:
International Journal of High Performance Computing and Networking
Year:
2006

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Abstract

Next generation wireless cellular networks aim at supporting Wireless Multimedia Services (WMSs) with different classes of traffic characterised by diverse Quality of Service (QoS) and bandwidth requirements. They will use micro/pico cellular architectures in order to provide higher capacity. However, small-size cells increase the handoff rate drastically. As a result, it is a challenge to provide stable QoS in these networks. This paper introduces a novel QoS Adaptive Call Admission Control (QoS-AdCAC) framework for next generation broadband wireless cellular networks supporting WMSs with different classes of traffic and diverse bandwidth requirements. In this work, each base station locally, independently of other Base Stations (BSs) in the network, differentiates between new and handoff calls for each class of traffic by assigning a threshold to each class according to its QoS requirements. The threshold values change dynamically in order to respond to the varying traffic conditions. The main feature of the proposed framework is its ability to simultaneously achieve several design goals, which makes it suitable for real time execution. Simulation results show the strength of our proposed framework.