LTE-Advanced DRX Mechanism for Power Saving E-Book

Scott A. Fowler

• Herausgeber: John Wiley & Sons
• Kategorie: Wissenschaft und neue Technologien
• Sprache: Englisch

Seitenzahl: 101

Veröffentlichungsjahr: 2013

Beschreibung

Resource allocation and power optimization is a new challenge in multimedia services in cellular communication systems. To provide a better end-user experience, the fourth generation (4G) standard Long Term Evolution/Long Term Evolution-Advanced (LTE/LTE-Advanced) has been developed for high-bandwidth mobile access to accommodate today's data-heavy applications. LTE/LTE-Advanced has adopted discontinuous reception (DRX) to extend the user equipment's battery lifetime, thereby further supporting various services and large amounts of data transmissions. By introducing the basics of mathematical analysis and performance evaluation of power-saving mechanisms in 3rd generation partnership project (3GPP) LTE and LTE-Advanced networks, the authors of this book aim to describe novel algorithms which could have better performance capabilities than previous methods. Chapter 1 gives the basic theory description of the 3GPP LTE network and 3GPP DRX power saving mechanism, empirical measurements of LTE network traffic and an overview of the basic LTE DRX model in the field of power saving techniques. Chapter 2 provides steps for deriving a 2-state analytical model up to a 4-state DRX model. The third and final chapter summarizes alternative methods for the implementation of LTE DRX. Contents 1. Basic Theory. 2. Analytical Semi-Markov Power-Saving Models. 3. Other Approaches for LTE Power Saving. About the Authors Scott A. Fowler is Associate Professor at Linköping University, Sweden, working with the Mobile Telecommunication (MT) group. He has served on several IEEE conferences/workshops as TPC to Chair, including Special Interest Groups coordinator for IEEE Communications Software (CommSoft) Technical Committee since 2012. His research interests include Quality of Service (QoS) support over heterogeneous networks, computer networks (wired, wireless), energy management, mobile computing, pervasive/ubiquitous, performance evaluation of networks and security. Abdelhamid Mellouk is Full Professor at the University of Paris-Est Créteil VdM (UPEC, ex. Paris 12), Networks & Telecommunications (N&T) Department (IUT C/V) and LiSSi Laboratory in France. He is a founder of the Network Control Research activity with extensive international academic and industrial collaborations. His general area of research is in adaptive real-time control for high-speed new generation dynamic wired/wireless networking in order to maintain acceptable Quality of Service/Experience for added-value services. Naomi Yamada is a research associate at Linköping University, Sweden.

Leseprobe

Contents

Preface

Introduction

1 Basic Theory

1.1. LTE overview

1.2. Scheduling in LTE

1.3. LTE Traffic measurements

1.4. User equipment power saving in LTE

1.5. Models for LTE power saving

1.6. Conclusion

1.7. Bibliography

2 Analytical Semi-Markov Power-Saving Models

2.1. Introduction of bursty packet data traffic

2.2. Designing a simple Two-state DRX model using semi-Markov

2.3. Three-state fixed model

2.4. Four-state fixed model

2.5. Conclusionq

2.6. Bibliography

3 Other Approaches for LTE Power Saving

3.1. Scheduling schemes

3.2. DRX power-saving method

3.3. Analytical work

3.4. Analytical Adjustable-DRX Three-state model

3.5. Conclusion

3.6. Bibliography

Acronyms and Notations

Index

First published 2013 in Great Britain and the United States by ISTE Ltd and John Wiley & Sons, Inc.

Apart from any fair dealing for the purposes of research or private study, or criticism or review, as permitted under the Copyright, Designs and Patents Act 1988, this publication may only be reproduced, stored or transmitted, in any form or by any means, with the prior permission in writing of the publishers, or in the case of reprographic reproduction in accordance with the terms and licenses issued by the CLA. Enquiries concerning reproduction outside these terms should be sent to the publishers at the undermentioned address:

ISTE Ltd

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©ISTE Ltd 2013

The rights of Scott A. Fowler, Abdelhamid Mellouk and Naomi Yamada to be identified as the authors of this work have been asserted by them in accordance with the Copyright, Designs and Patents Act 1988.

Library of Congress Control Number: 2013941768

British Library Cataloguing-in-Publication Data

A CIP record for this book is available from the British Library

ISSN: 2051-2481 (Print)

ISSN: 2051-249X (Online)

ISBN: 978-1-84821-532-0

Preface

Today, our everyday life is almost impossible to detach from the influence of wireless mobile communication technologies. This global trend is growing exponentially, and the mobile-only data traffic is expected to exceed stationary data traffic. However, for further development of mobile communication, there is a major obstacle to overcome, which is the resource-paucity of portable devices relative to stationary hardware. This is mainly because of the restricted computing power due to the small battery capacity of the mobile devices. To overcome this, the long-term evolution (LTE) system by the Third-Generation Partnership Project (3GPP) adopted the discontinuous reception (DRX) mechanism as a device energy conservation strategy.

The aim of this book is to introduce the basics of the DRX mechanism and strategies to optimize the DRX parameters for those who wish to study LTE power-saving techniques. Some of the key features of this book include (1) a detailed description of the DRX mechanism for easy understanding, (2) an introduction to analytical semi-Markov modeling and (3) a presentation of the empirical measurement of LTE network performance. The authors hope that this book will serve as a textbook for introductory level students in the field of wireless telecommunications and related areas. Especially, the book is targeted for those who wish to deepen their knowledge of the analytical modeling approach for optimal network performance.

This book would not have been possible without the hard work of the students at the Mobile Telecommunications group of the Communications and Transport Division at the department of Science and Technology (ITN) in Linköping University, Campus Norrköping, Sweden. The authors would like to especially thank the following people for their persistent research effort: Ranjeet S. Bhamber, Ahmed Omar Shahidullah, Mohammed Osman, Jalal Sarfraz, Muhammad Muddassir Abbas, Abdussalam Shahid and last, but not least, Muhammad Sajid Mushtaq.

Scott FOWLERAbdelhamid MELLOUKNaomi YAMADAJuly 2013

Introduction

The basic wireless mobile communication is, simply put, transfer of voice from one point to another without the use of wires. This simple wireless communication using analog radio frequency between the handsets and radio towers is called first-generation (1G) mobile communication. The second-generation (2G) mobile technologies increased system capacity by means of digital frequency between the handsets and towers, and enabled digitally encrypted phone conversations, greater mobile phone penetration, and data transfer (i.e. SMS text message). Technological advancement in improving data rate and bandwidth for mobile communication resulted in third-generation (3G) mobile technologies with an information transfer rate of at least 200 kbit/s. 3G empowers wireless communication with voice, Internet access, video calls and TV. The emergence of wireless mobile technology has come a long way, and now the time has come for the fourth-generation (4G) mobile technologies.