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Journal of Computer Systems, Networks, and Communications
Volume 2010 (2010), Article ID 279807, 12 pages
http://dx.doi.org/10.1155/2010/279807
Research Article

Capacity Evaluation for IEEE 802.16e Mobile WiMAX

Department of Computer Science and Engineering, Washington University in St. Louis, St. Louis, MO 63130, USA

Received 21 September 2009; Accepted 2 December 2009

Academic Editor: Rashid Saeed

Copyright © 2010 Chakchai So-In 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

We present a simple analytical method for capacity evaluation of IEEE 802.16e Mobile WiMAX networks. Various overheads that impact the capacity are explained and methods to reduce these overheads are also presented. The advantage of a simple model is that the effect of each decision and sensitivity to various parameters can be seen easily. We illustrate the model by estimating the capacity for three sample applications—Mobile TV, VoIP, and data. The analysis process helps explain various features of IEEE 802.16e Mobile WiMAX. It is shown that proper use of overhead reducing mechanisms and proper scheduling can make an order of magnitude difference in performance. This capacity evaluation method can also be used for validation of simulation models.