WiMAX and Wireless Standards
Service providers must make difficult decisions as to which technology to choose in order to enable them to offer advanced services and demand for high bandwidth throughput as subscribers want their broadband connection “anytime, anywhere and anyway”. As
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Ramjee Prasad
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Fernando J. Velez
WiMAX Networks Techno-Economic Vision and Challenges
Ramjee Prasad Center for TeleInFrastruktur (CTIF) Aalborg University Inst. Electronic Systems Niels Jernes Vej 12 9220 Aalborg Denmark [email protected]
Fernando J. Velez Universidade da Beira Interior Instituto de Telecomunicac¸o˜es Depto. Engenharia Electromecaˆnica Calcada Fonte do Lameiro 6201-001 Covilha Portugal [email protected] King’s College London Centre for Telecommunications Research Strand London WC2R 2LS UK
ISBN 978-90-481-8751-5 e-ISBN 978-90-481-8752-2 DOI 10.1007/978-90-481-8752-2 Springer Dordrecht Heidelberg London New York Library of Congress Control Number: 2010928698 # Springer Science+Business Media B.V. 2010 No part of this work may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, microfilming, recording or otherwise, without written permission from the Publisher, with the exception of any material supplied specifically for the purpose of being entered and executed on a computer system, for exclusive use by the purchaser of the work. Cover design: eStudio Calamar S.L., F. Steinen-Broo, Pau/Girona, Spain Printed on acid-free paper Springer is part of Springer Science+Business Media (www.springer.com)
To our families and to our students
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Preface
Attraction and aversion of the senses to their corresponding sense objects is unavoidable. One should not be controlled by them; since they are obstacles in one’s path. —The Bhagvad-Gita (3.34)
Worldwide Interoperability for Microwave Access (WIMAX) is a technology covering broad range of topics. To the best of our knowledge, WiMAX Networks is a first book that deals with all the relevant areas shown in Fig. 1 namely, quality of service (QoS), security, mobility, radio resource management (RRM), multiple input multiple output (MIMO) antenna, planning, and cost/revenue optimization, medium access control (MAC) layer, physical layer, network layer, and so on. Chapter 1 introduces the WiMAX and locates its place among the existing and future wireless systems. Aspects of OFDM and OFDMA WiMAX physical layer is well covered in Chapter 2. Chapter 3 covers link layer issues, having its main focus on Medium Access Control (MAC) Layer. The term quality of service (QoS) is clearly explained in Chapter 4, considering the WiMAX into account. Security is a primary subject for WiMAX and for secure communications, privacy and confidentiality are fundamental issues. Chapter 5 has taken care of this important subject. vii
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Preface
WiMAX Networks
Fig. 1 Tree structure of the book
Chapter 6 presents mobility architecture with integrated QoS support and the proposed architecture can accommodate different wired and wireless technologies. The radio resource management (RRM) in OFDMA based cellular networks such as WiMAX is addressed in Chapter 7. Four different sub-carriers allocation algorithm with low complexity are evaluated for WiMAX cellular systems. Chapter 8 first discusses the propa
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