Performance Model of a WIMAX 2.0 All-IP 4G System
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Performance Model of a WIMAX 2.0 All-IP 4G System Aymen I. Zreikat · Ismat A. Aldmour · Khalid Al-Begain
Published online: 10 February 2013 © Springer Science+Business Media New York 2013
Abstract 4G is promising a wireless broadband with data rates up to 1Gbps. The two candidate technologies for 4G are the Advanced Long Term Evolution (Advanced LTE) which is based on the 3GPP standards and the WiMAX 2.0 based on the IEEE 802.16 family of standards. The common feature of both technologies is that they will provide All-IP connectivity with flexible bit rates and quality of service guarantees for multiple classes of services including voice, mainly using voice over IP, data and video services. Most of the performance studies of 4G technologies use highly complex and sophisticated simulations due to the multiple complexity factors in investigating 4G technologies such as All-IP flexible bit rates, adaptive coding and modulation as well as the multi-services provided. These factors usually make any modelling attempt very difficult. This paper presents a numerical/analytical model for a 4G WiMAX cell based on a multi-dimensional Continuous-Time Markov Chain (CTMC) model. Performance measures were derived for the key performance indicators such as throughput and average bit rate per cell and per service class. By assuming minimum acceptable bit rates for certain quality of service guarantees, we derived measures for blocking probabilities. The model has been formulated and solved using MOSEL-2 (Modelling Specification and Evaluation Language) which captures the key features of a 4G system that affect services at session/call level. The resuls obtained from the model using sample para-
A. I. Zreikat (B) Department of Information Technology, Faculty of Science, Mu’tah University, P.O. Box 7, Mu’tah 61710, Jordan e-mail: [email protected] I. A. Aldmour Department of Computer Science and Engineering, Faculty of Computer Science and Information Technology, Al-Baha University, P.O. Box 1988, Al-Baha, Saudi Arabia e-mail: [email protected] K. Al-Begain Faculty of Advanced Technology, Integrated Communications Research Centre, University of Glamorgan, Pontypridd CF37 1SQ, UK e-mail: [email protected]
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meters show that, the model can provide very useful insight to system behavior and can give good first indication to the performance of such a complex system. Keywords Performance analysis · WiMAX/LTE cell · MOSEL-2 language · 4G of mobile networks · Modelling 1 Introduction 1.1 WiMAX It is expected that mobile data traffic will grow at a Compound Annual Growth Rate (CAGR) of 78 % between 2011 and 2016, 18 times increase, and three times faster than fixed IP traffic [1]. WiMax( Worldwide Interoperability for Microwave Access); is a technology standardized by IEEE. IEEE issued a series of standards, IEEE 802.16 series of standards, starting 2000, that aimed to provide a metropolitan area data access called Wireless MAN standards. The first in the series that found real applicability was IEEE 802
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