Wireless Network Traffic and Quality of Service Support: Trends and Standards

Wireless Network Traffic and Quality of Service Support: Trends and Standards

Thomas D. Lagkas (University of Western Macedonia, Greece), Pantelis Angelidis (University of Western Macedonia, Greece) and Loukas Georgiadis (Hewlett-Packard Co, USA)
Indexed In: SCOPUS
Release Date: March, 2010|Copyright: © 2010 |Pages: 572|DOI: 10.4018/978-1-61520-771-8
ISBN13: 9781615207718|ISBN10: 1615207716|EISBN13: 9781615207725|ISBN13 Softcover: 9781616922863
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Description

Wireless networking is considered by many to be the future of communication technology, as the demand for high quality, mobile connection increases across the world.

Wireless Network Traffic and Quality of Service Support: Trends and Standards examines cutting edge approaches for the provision of Quality of Service (QoS) in wireless local area networks, presenting the latest solutions towards the optimization of the channel management and routing in infrastructure and ad hoc wireless networks. This book also analyzes traffic categorization issues and methods that can predict the available QoS, as well as managing wireless mesh networks and wireless sensor networks. It also examines the entire user experience, by treating energy conservation techniques to maximize mobile devices' battery lifetime. It is a vital foundation for researchers dealing with the problems of today to create the new networks of the future.

Topics Covered

The many academic areas covered in this publication include, but are not limited to:

  • Admission Control Policy
  • Cross-Layer Scheduling
  • Energy Saving Routing
  • Integrated QoS Capable Protocols
  • Mobility Management
  • Next Generation Wireless Networks
  • Quality of Service in Heterogeneous Traffic
  • Support Mechanisms
  • Topology Control approaches
  • Traffic Prediction
  • Wireless LANS

Reviews and Testimonials

This book presents to the wireless network community the current research trends for efficient MAC design to provide QoS in wireless networks and inspire future research in this area.

– Vasileios Vitsas, Technological Educational Institution of Thessaloniki, Greece

Table of Contents and List of Contributors

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Preface

Nowadays, wireless networks are considered to be a significant and emerging part of the communication networks field. The current prevalent opinion is that in some years a considerable percentage of the data networks will be wireless networks. The same time, the network applications are evolving and become more resource demanding. Specifically, multimedia traffic tends to be a significant portion of the total network load, which leads to stricter transmission requirements. The modern time-bounded network applications need to be provided with high throughput, low delay, low jitter, and low loss/drop rate. Today, users expect that this type of high quality services can be offered by all kinds of communication networks. However, meeting strict transmission requirements under the harsh wireless environment, which is characterized by scarce bandwidth, unreliable links, and limited range, is quite challenging and it has actually formed a very active research field in the last years. A straightforward approach to this whole issue is the effort to physically maximize the available data rate and link quality. It is certain that there has been lately great development in the respective area, which has led to efficient signal modulation techniques and has definitely improved the overall performance of wireless data transmissions. However, the increasing demands necessitate global solutions that involve cross-layer approaches. Specifically, modern wireless networks need to provide total Quality of Service (QoS), which in practice means efficient differentiation of the offered traffic flows based on their nature and serving them according to their specific needs. This concept includes adaptive control of the physical layer, optimized medium access control for serving mixed-type traffic load, efficient routing algorithms that can provide end-to-end transport guarantees, and QoS-aware higher layer protocols which can be automatically adjusted to the user needs and the network limitations. Furthermore, part of the provided Quality of Experience (QoE) in a wireless network environment has become the available energetic autonomy of the mobile devices, thus, power conservation techniques are also considered to participate in the total QoS provision concept.

Cutting edge approaches for the provision of QoS in wireless local area networks are examined in this book. The Enhanced Distributed Channel Access (EDCA) and the Hybrid Control Channel Access (HCCA) protocols, which constitute the Hybrid Coordination Function (HCF), that is the Medium Access Control (MAC) scheme of the IEEE 802.11e standard, are discussed. The authors present latest solutions towards the optimization of the channel management and routing in infrastructure and ad hoc wireless networks. This book also analyzes traffic categorization issues and methods that can predict the available QoS. Moreover, cross-layer designs (especially PHY-MAC) are presented, which can efficiently serve multimedia traffic over wireless links. Energy conservation techniques for the maximization of the mobile devices’ battery lifetime are also examined. Furthermore, the book introduces the reader to modern methods of managing wireless mesh networks and controlling wireless sensor networks.

State of the art mechanisms that ensure QoS support in wireless wide area networks are presented, too. Topology control issues for extended point-to-point wireless networks are examined. The book also discusses the new IEEE 802.16 standard, known as WiMAX, focusing on traffic scheduling techniques. The reader can thoroughly study future network cooperation under the promising 4G architecture by examining issues related with allocating resources, managing new connections, and predicting the QoS level that can be offered. Additionally, the role of power control in supporting MBMS (Multimedia Broadcast / Multicast Service) services over 4G networks is analyzed.

The target audience of this book includes students on computer science and communications engineering that need a good background and understanding of the subject area, scholars and researchers whose area of interests is wireless networks – QoS and need a reliable reference for their study, and people working in the wireless communications industry and require a modern book that can support their effort to enhance their current services and develop new ones. The book can be proved valuable as a library reference, useful in computer science, informatics, electronic-electrical engineering, and communications engineering departments. It can also serve as a course supplement for graduate studies on computer networks, wireless communications, and multimedia applications. Instructors in the above mentioned scientific areas would find this book useful as a resource, when teaching (among others) about the evolution of wireless networks, the nature and characteristics of network traffic, resource management algorithms, medium access control protocols, multihop network control, network simulation techniques, and power saving trends.

The book is organized into two sections. Section I discusses QoS provision techniques for wireless networks that mainly target local area networks (WLANs). Chapter I presents the Priority Oriented Hybrid Access (POHA) scheme, which is formed by the combination of two different MAC protocols for WLANs. This scheme is examined in comparison to the hybrid MAC protocol defined in the IEEE 802.11e standard, HCF. Chapter II presents the Distributed Queueing Collision Avoidance (DQCA) MAC protocol for infrastructure wireless networks. Based on a cross-layer approach, four traffic scheduling algorithms are also proposed. Chapter III introduces a mechanism for strict QoS guarantee in WLANs. Its performance is examined compared to the defined IEEE 802.11e HCCA scheme. Chapter IV proposes a dynamic queue length scheduling technique for wireless networks with heterogeneous traffic. It also examines the impact of modern multi-antenna solutions to the higher network layers. Chapter V describes traffic prediction models, including time series models, artificial neural network models, wavelet-based models, and support vector machine-based models. The authors study the application of a support vector machine in a WLAN and examine its behavior along with other models. Chapter VI analyzes power consumption minimization of video transmission over wireless links. The authors adopt a cross-layer approach, which takes into account the video coding and the wireless communication process. Chapter VII examines power saving issues related with medium access control and routing algorithms in wireless networks. The respective protocols proposed in the chapter are finally evaluated in comparison to other well-known protocols. Chapter VIII discusses modern end-to-end QoS support solutions. The authors study the issues raised by the coexistence of mobility management and MAC protocols. Chapter IX describes the Control and Provisioning Wireless Access Protocol (CAPWAP), which is related with the management of centralized WLANs. The authors examine the possibility to use this protocol for QoS monitoring and adjusting. Chapter X provides a detailed overview of QoS provision in multi-hop ad-hoc networks. It presents related issues in each one of the physical, data link, and routing layers. Cross-layer approaches are also examined. Chapter XI discusses heuristic geographic routing techniques for wireless networks. The authors introduce a new performance measure and compare the presented algorithms using simulation.

Section II discusses QoS provision techniques for wireless networks that mainly target wide area networks (WWANs). Chapter XII presents topology control solutions in wireless mesh networks, in terms of employing power control or not. The authors present the Path Reduction (PR) algorithm that is described via simulation. Chapter XIII is about QoS provision techniques in WiMAX networks. Various resource management schemes proposed for IEEE 802.16 networks are examined and evaluated. Chapter XIV provides a complete overview of the next generation wireless networks area. The 4G concept is examined and various techniques for QoS provision in a heterogeneous network environment are provided. Chapter XV examines the process of predicting the QoS characteristics provided by the locally available networks in a 4G architecture. The specific case study involves a health tele-monitoring service. Chapter XVI analyzes the network selection problem inside a heterogeneous network environment. The authors present the latest approaches and introduce the application of the game theory concept in the specific subject area. Chapter XVII thoroughly examines the call admission control in wireless networks. The authors analytically study the performance of the available relative schemes focusing on the admission denying probability. Lastly, Chapter XVIII presents the basic approaches in delivering MBMS content inside a 4G network architecture. The authors focus on power control adaptation issues when operating under variable network conditions.

In overall, this book aggregates technologies related to QoS support in wireless networks. This publication targets in explaining all related issues, the problems that arise when trying to provide different and demanding services over wireless networks, the theoretical background, the evolution of traditional related technologies and the solutions given so far, and moreover, the book presents the latest research concepts and relevant ideas regarding near-future implementations. The selected chapters cover most of the aspects of this modern and promising area that till now was usually presented in a segmental way in literature. Finally, this book could potentially become: a) a guidebook for readers entering the area of QoS support in wireless networks, b) a reference for scientists who need to gain up-to-date knowledge of the latest related technologies, and c) a source of ideas and new trends for researchers who work on the area of QoS provision in wireless networks.

Author(s)/Editor(s) Biography

Thomas Lagkas received the B.S. degree (with honors) in computer science from the Department of Informatics, Aristotle University, Thessaloniki, Greece. He received the PhD degree on “Wireless Communication Networks” from the same department, in 2006. During his PhD studies, he was awarded a PhD candidates’ scholarship by the Research Committee of the Aristotle University. He has been an adjunct Lecturer at the Department of Informatics and Telecommunications Engineering, University of Western Macedonia, Greece, since 2007. He has been a Laboratory Associate at the Technological Educational Institute of Thessaloniki, since 2004, and a Scientific Associate, since 2008. He has been awarded a postdoctoral research scholarship by the State Scholarship Foundation. His interests are in the areas of wireless communication networks, medium access control, QoS provision and mobile multimedia communications with relevant publications at a number of widely recognized international scientific journals and conferences.
Pantelis Angelidis received his diploma in Electrical Engineering and his Ph.D. in Telecommunications Engineering from the School of Electrical Engineering, Aristotle University of Thessaloniki in 1989 and 1993 respectively. He is currently with the University of Western Macedonia, Greece, Ass. Prof. on Health Telematics. He has worked as a technology expert in Telecommunications for the past 20 years. He has served as a project manager in over twenty international research projects. He has presented more than 50 papers in international scientific conferences and has published more than 20 original articles in international research journals. He serves as an evaluator of IST projects for the European Commission and the Greek Government. Dr Angelidis is the leader of the CEN eEHIC PT, a member of the EC M/403 eHealth-INTEROP PT and the ITU Steering Committee of the Centre of Excellence Programme for Eastern Europe and CIS countries and board secretary of HL7 Hellas. Dr. Angelidis is the founder and president of VIDAVO, a health telematics company. His research interests include WSN, BAN, protocols and services in ehealth.
Loukas Georgiadis is an assistant professor of Informatics and Telecommunications Engineering at the University of Western Macedonia,Greece. His research interests include combinatorial algorithms (mainly for graph and network problems), data structures, and optimization. Loukas obtained his PhD in Computer Science from Princeton University under the supervision of Professor Robert E. Tarjan. Prior to joining the University of Western Macedonia he held research positions at the University of Aarhus, Denmark, and Hewlett-Packard Laboratories, USA.

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