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The Scientific World Journal
Volume 2013, Article ID 794549, 9 pages
http://dx.doi.org/10.1155/2013/794549
Research Article

On the Relationship between Multicast/Broadcast Throughput and Resource Utilizations in Wireless Mesh Networks

1Faculty of Electrical and Computer Engineering, Yazd University, Yazd 8915818411, Iran
2Department of Electrical and Computer Engineering, University of Toronto, Toronto, ON, Canada M5S 3G4

Received 29 August 2013; Accepted 23 September 2013

Academic Editors: C.-L. Chang, K. Dejhan, J. Garcia-Reinoso, and C. Pan

Copyright © 2013 Avid Avokh et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This paper deals with the problem of multicast/broadcast throughput in multi-channel multi-radio wireless mesh networks that suffer from the resource constraints. We provide a formulation to capture the utilization of the network resources and derive analytical relationships for the network’s throughput in terms of the node utilization, the channel utilization, and the number of transmissions. Our model relies on the on-demand quality of service multicast/broadcast sessions, where each admitted session creates a unique tree with a specific bandwidth. As an advantage, the derived relationships are independent of the type of tree built for each session and can be used for different protocols. The proposed formulation considers the channel assignment strategy and reflects both the wireless broadcast advantage and the interference constraint. We also offer a comprehensive discussion to evaluate the effects of load-balancing and number of transmissions on the network’s throughput. Numerical results confirm the accuracy of the presented analysis.