Download or read book Video QoS QoE Over IEEE802 11n ac written by Rebeen R. Hama Amin and published by . This book was released on 2016 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The demand for video applications over wireless networks has tremendously increased, and IEEE 802.11 standards have provided higher support for video transmission. However, providing Quality of Service (QoS) and Quality of Experience (QoE) for video over WLAN is still a challenge due to the error sensitivity of compressed video and dynamic channels. This thesis presents a contemporary survey study on video QoS/QoE over WLAN issues and solutions. The objective of the study is to provide an overview of the issues by conducting a background study on the video codecs and their features and characteristics, followed by studying QoS and QoE support in IEEE 802.11 standards. Since IEEE 802.11n is the current standard that is mostly deployed worldwide and IEEE 802.11ac is the upcoming standard, this survey study aims to investigate the most recent video QoS/QoE solutions based on these two standards. The solutions are divided into two broad categories, academic solutions, and vendor solutions. Academic solutions are mostly based on three main layers, namely Application, Media Access Control (MAC) and Physical (PHY) which are further divided into two major categories, single-layer solutions, and cross-layer solutions. Single-layer solutions are those which focus on a single layer to enhance the video transmission performance over WLAN. Cross-layer solutions involve two or more layers to provide a single QoS solution for video over WLAN. This thesis has also presented and technically analyzed QoS solutions by three popular vendors. This thesis concludes that single-layer solutions are not directly related to video QoS/QoE, and cross-layer solutions are performing better than single-layer solutions, but they are much more complicated and not easy to be implemented. Most vendors rely on their network infrastructure to provide QoS for multimedia applications. They have their techniques and mechanisms, but the concept of providing QoS/QoE for video is almost the same because they are using the same standards and rely on Wi-Fi Multimedia (WMM) to provide QoS."--Abstract.

Download or read book QoS Provisioning in Future Wireless Local Area Networks written by Indira Paudel and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wireless Local Area Networks (WLAN) are today the most popular access networking solution at homes and offices. Although initially, WLANs were designed to carry best effort traffic, users today are adopting them for various multimedia services and applications that have stringent QoS requirements. WLAN standards based on CSMA/CA technique are not able to provide QoS guarantees and furthermore lead to bad performances when the number of competing stations/flows increases. Moreover, standard QoS solutions rely on centralized approaches (e.g. PCF, HCCA) that are not widely used on terminals. The distributed approach, based on concurrent access remains fundamental in WLAN. In this thesis, we propose solutions to improve both QoS and QoE (Quality of Experience) of multimedia services over WLAN. The main contributions include proposal of an aggregation scheme that relies on QoS differentiation for different service classes. We then evaluated the QoE of video services over IEEE 802.11n networks for various radio, MAC and load conditions. Based on this study, a random neural network solution is then proposed to automate video QoE prediction from system parameters. Furthermore, an enhancement to the distributed access mechanism in IEEE 802.11 networks is also proposed. First, we proposed to select appropriate and specific Backoff values according to QoS requirements. Second, a new flow prioritization based on AIFSN (Arbitration Inter-Frame Space Number) values, allocated according to traffic load and traffic types is proposed. Through analysis, we showed that these solutions can enhance QoS and provide regular access, minimize collisions and provide better resource utilization.

Download or read book Green Software Defined Radios written by Liesbet Van der Perre and published by Springer Science & Business Media. This book was released on 2008-12-21 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt: Green Software De?ned Radios, the title of this book may have originated from a lackofinspiration,andthecombinationofhardwork,jetlag,anddrinkinggreentea. The message we want to convey however, is that SDRs are a promising technology for the future, providing they are designed for ef?cient usage of scarce resources: energy and spectrum. In the last years, the R&D teams focusing on wireless c- munication (around the world and at IMEC speci?cally), have realized great bre- throughs. It is our honor, building on this knowledge, to bring a comprehensive overview of the essential technologies. We are grateful that Springer is willing to publish in their collection on radio technologies, a book on green SDRs, a weird species still today, yet maybe the baseline for the day after tomorrow. Dear reader, we wish that you ?nd in the following pages, including the references, some int- esting insights, and that this book may live more or less up to your expectations (and hopefully more than less). Thisbook’sclosingstatesthatthequestforGreenSDRshasnotended,thisisjust the beginning. Concerning this book however, we are happy that today the opposite is true. We want to acknowledge our colleagues at IMEC for their great scienti?c contribution, and even more for the enjoyable cooperation.

Download or read book FiWi Access Networks written by Martin Maier and published by Cambridge University Press. This book was released on 2011-12-15 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: The evolution of broadband access networks toward bimodal fiber-wireless (FiWi) access networks, described in this book, may be viewed as the endgame of broadband access. After discussing the economic impact of broadband access and current worldwide deployment statistics, all the major legacy wireline and wireless broadband access technologies are reviewed. State-of-the-art GPON and EPON fiber access networks are described, including their migration to next-generation systems such as OCDMA and OFDMA PONs. The latest developments of wireless access networks are covered, including VHT WLAN, Gigabit WiMAX, LTE and WMN. The advantages of FiWi access networks are demonstrated by applying powerful network coding, heterogeneous optical and wireless protection, hierarchical frame aggregation, hybrid routing and QoS continuity techniques across the optical-wireless interface. The book is an essential reference for anyone working on optical fiber access networks, wireless access networks or converged FiWi systems.

Download or read book Fundamentals of 5G Mobile Networks written by Jonathan Rodriguez and published by John Wiley & Sons. This book was released on 2015-06-22 with total page 333 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fundamentals of 5G Mobile Networks provides an overview of the key features of the 5th Generation (5G) mobile networks, discussing the motivation for 5G and the main challenges in developing this new technology. This book provides an insight into the key areas of research that will define this new system technology paving the path towards future research and development. The book is multi-disciplinary in nature, and aims to cover a whole host of intertwined subjects that will predominantly influence the 5G landscape, including the future Internet, cloud computing, small cells and self-organizing networks (SONs), cooperative communications, dynamic spectrum management and cognitive radio, Broadcast-Broadband convergence , 5G security challenge, and green RF. This book aims to be the first of its kind towards painting a holistic perspective on 5G Mobile, allowing 5G stakeholders to capture key technology trends on different layering domains and to identify potential inter-disciplinary design aspects that need to be solved in order to deliver a 5G Mobile system that operates seamlessly.

Download or read book Cognitive Radio Sensor Networks Applications Architectures and Challenges written by Rehmani, Mubashir Husain and published by IGI Global. This book was released on 2014-06-30 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This book examines how wireless sensor nodes with cognitive radio capabilities can address these network challenges and improve the spectrum utilization, presenting a broader picture on the applications, architecture, challenges, and open research directions in the area of WSN research"--Provided by publisher.

Download or read book CWNA Certified Wireless Network Administrator Study Guide written by David D. Coleman and published by John Wiley & Sons. This book was released on 2006-11-29 with total page 593 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the fastest-growing certifications on the market, CWNA is rapidly becoming the premier professional wireless certification for network administrators. It is also the foundation-level exam for the complete Certified Wireless Network Professional program. Now you can join the move to Wi-Fi and prepare for your certification with this comprehensive and targeted study guide. This value-packed book includes: Practical information on designing, installing, and managing wireless networks, including the new 802.11 standards Challenging practice questions and hands-on exercises A test engine with bonus exams and over 150 electronic flashcards A pre-assessment test A detailed glossary Inside, find authoritative coverage of all exam PW0-100 objectives, including: Radio Technologies Antenna Concepts Wireless LAN Hardware and Software Network Design, Installation, and Management Wireless Standards and Organizations 802.11 Network Architecture Wireless LAN Security Troubleshooting Performing Site Surveys Featured on the CD SYBEX TEXT ENGINE: Test your knowledge with advanced testing software. Includes all chapter review questions and bonus exams. ELECTRONIC FLASHCARDS: Reinforce your understanding with flashcards that can run on your PC, Pocket PC, or Palm handheld. Also on CD, you'll find the entire book in searchable and printable PDF, as well as valuable tools, demo software, and white papers that will supplement your certification preparation. Visit www.sybex.com Note: CD-ROM/DVD and other supplementary materials are not included as part of eBook file.

Download or read book Principles of Internet of Things IoT Ecosystem Insight Paradigm written by Sheng-Lung Peng and published by Springer Nature. This book was released on 2019-11-13 with total page 626 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses the evolution of future-generation technologies through the Internet of things, bringing together all the related technologies on a single platform to offer valuable insights for undergraduate and postgraduate students, researchers, academics and industry practitioners. The book uses data, network engineering and intelligent decision- support system-by-design principles to design a reliable IoT-enabled ecosystem and to implement cyber-physical pervasive infrastructure solutions. It takes readers on a journey that begins with understanding the insight paradigm of IoT-enabled technologies and how it can be applied. It walks readers through engaging with real-time challenges and building a safe infrastructure for IoT-based, future-generation technologies. The book helps researchers and practitioners to understand the design architecture through IoT and the state of the art in IoT countermeasures. It also highlights the differences between heterogeneous platforms in IoT-enabled infrastructure and traditional ad hoc or infrastructural networks, and provides a comprehensive discussion on functional frameworks for IoT, object identification, IoT domain model, RFID technology, wearable sensors, WBAN, IoT semantics, knowledge extraction, and security and privacy issues in IoT-based ecosystems. Written by leading international experts, it explores IoT-enabled insight paradigms, which are utilized for the future benefit of humans. It also includes references to numerous works. Divided into stand-alone chapters, this highly readable book is intended for specialists, researchers, graduate students, designers, experts, and engineers involved in research on healthcare-related issues.

Download or read book Handbook of Research on Next Generation Mobile Communication Systems written by Panagopoulos, Athanasios D. and published by IGI Global. This book was released on 2015-08-26 with total page 635 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anyone who has ever shopped for a new smart phone, laptop, or other tech gadget knows that staying connected is crucial. There is a lot of discussion over which service provider offers the best coverage—enabling devices to work anywhere and at any time—with 4G and LTE becoming a pervasive part of our everyday language. The Handbook of Research on Next Generation Mobile Communication Systems offers solutions for optimal connection of mobile devices. From satellite signals to cloud technologies, this handbook focuses on the ways communication is being revolutionized, providing a crucial reference source for consumers, researchers, and business professionals who want to be on the frontline of the next big development in wireless technologies. This publication features a wide variety of research-based articles that discuss the future of topics such as bandwidth, energy-efficient power, device-to-device communication, network security and privacy, predictions for 5G communication systems, spectrum sharing and connectivity, and many other relevant issues that will influence our everyday use of technology.

Download or read book Advanced Applications of Blockchain Technology written by Shiho Kim and published by Springer Nature. This book was released on 2019-09-24 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: This contributed volume discusses diverse topics to demystify the rapidly emerging and evolving blockchain technology, the emergence of integrated platforms and hosted third-party tools, and the development of decentralized applications for various business domains. It presents various applications that are helpful for research scholars and scientists who are working toward identifying and pinpointing the potential of as well as the hindrances to this technology.

Download or read book Performance Modelling and Evaluation of ATM Networks written by Demetres D. Kouvatsos and published by Springer. This book was released on 1995-06-30 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers all aspects of ATM (Asynchronous Transfer Mode) networks. ATM is the core switching technology for the Information Superhighway and this book provides up-to-the-minute research on the subject.

Download or read book Queueing Modelling Fundamentals written by Chee Hock Ng and published by Wiley-Blackwell. This book was released on 1996 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Queueing analysis is a vital tool used in the evaluation of system performance. Applications of queueing analysis cover a wide spectrum, from bank automated teller machines, to transportation and communications data networks. An introductory text, this book focuses on queueing modelling techniques and applications of data networks, examining the underlying principles of isolated queueing systems. Features include: Introductory chapter on pre-requisite mathematical tools Discussion of Markovian queueing systems, emphasising derivation techniques used to measure system performance Analysis of the open queueing network with a single class customer, introducing the Jackson queueing networks Focus on the emerging class of arrival processes, such as Markovmodulated arrival process A comprehensive text which highlights both the theoretical models and their applications through numerous worked examples. Advanced engineering and computer science students working on network performance evaluation will find this an excellent study text. The detailed step-by-step derivation of queueing results will be of great appeal to professional engineers and technologists who use queueing theory.

Download or read book An Introduction to Network Modeling and Simulation for the Practicing Engineer written by Jack L. Burbank and published by John Wiley & Sons. This book was released on 2011-08-04 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides the practicing engineer with a concise listing of commercial and open-source modeling and simulation tools currently available including examples of implementing those tools for solving specific Modeling and Simulation examples. Instead of focusing on the underlying theory of Modeling and Simulation and fundamental building blocks for custom simulations, this book compares platforms used in practice, and gives rules enabling the practicing engineer to utilize available Modeling and Simulation tools. This book will contain insights regarding common pitfalls in network Modeling and Simulation and practical methods for working engineers.

Download or read book Flying Ad Hoc Networks written by Jingjing Wang and published by Springer Nature. This book was released on 2022-02-10 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: Relying on unmanned autonomous flight control programs, unmanned aerial vehicles (UAVs) equipped with radio communication devices have been actively developed around the world. Given their low cost, flexible maneuvering and unmanned operation, UAVs have been widely used in both civilian operations and military missions, including environmental monitoring, emergency communications, express distribution, even military surveillance and attacks, for example. Given that a range of standards and protocols used in terrestrial wireless networks are not applicable to UAV networks, and that some practical constraints such as battery power and no-fly zone hinder the maneuverability capability of a single UAV, we need to explore advanced communication and networking theories and methods for the sake of supporting future ultra-reliable and low-latency applications. Typically, the full potential of UAV network’s functionalities can be tapped with the aid of the cooperation of multiple drones relying on their ad hoc networking, in-network communications and coordinated control. Furthermore, some swarm intelligence models and algorithms conceived for dynamic negotiation, path programming, formation flight and task assignment of multiple cooperative drones are also beneficial in terms of extending UAV’s functionalities and coverage, as well as of increasing their efficiency. We call the networking and cooperation of multiple drones as the terminology ‘flying ad hoc network (FANET)’, and there indeed are numerous new challenges to be overcome before the idespread of so-called heterogeneous FANETs. In this book, we examine a range of technical issues in FANETs, from physical-layer channel modeling to MAC-layer resource allocation, while also introducing readers to UAV aided mobile edge computing techniques.

Download or read book Wireless Communication Networks and Systems Global Edition written by Cory Beard and published by Pearson Higher Ed. This book was released on 2016-01-05 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: For courses in wireless communication networks and systems A Comprehensive Overview of Wireless Communications Wireless Communication Networks and Systems covers all types of wireless communications, from satellite and cellular to local and personal area networks. Organised into four easily comprehensible, reader-friendly parts, it presents a clear and comprehensive overview of the field of wireless communications. For those who are new to the topic, the book explains basic principles and fundamental topics concerning the technology and architecture of the field. Numerous figures and tables help clarify discussions, and each chapter includes a list of keywords, review questions, homework problems, and suggestions for further reading. The book includes an extensive online glossary, a list of frequently used acronyms, and a reference list. A diverse set of projects and other student exercises enables instructors to use the book as a component in a varied learning experience, tailoring courses to meet their specific needs. The full text downloaded to your computer With eBooks you can: search for key concepts, words and phrases make highlights and notes as you study share your notes with friends eBooks are downloaded to your computer and accessible either offline through the Bookshelf (available as a free download), available online and also via the iPad and Android apps. Upon purchase, you'll gain instant access to this eBook. Time limit The eBooks products do not have an expiry date. You will continue to access your digital ebook products whilst you have your Bookshelf installed.

Download or read book LTE Signaling written by Ralf Kreher and published by John Wiley & Sons. This book was released on 2010-12-21 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive reference on the call procedures of 4G RAN and Core networks, LTE Signaling, Troubleshooting and Optimization describes the protocols and procedures of LTE. It explains essential topics from basic performance measurement counters, radio quality and user plane quality to the standards, architecture, objectives and functions of the different interfaces. The first section gives an overview of LTE/EPC network architecture, reference points, protocol stacks, information elements and elementary procedures. The proceeding parts target more advanced topics to cover LTE/EPC signalling and radio quality analysis. This book supplements the information provided in the 3GPP standards by giving readers access to a universal LTE/EPC protocol sequence to ensure they have a clear understanding of the issues involved. It describes the normal signaling procedures as well as explaining how to identify and troubleshoot abnormal network behavior and common failure causes. Enables the reader to understand the signaling procedures and parameters that need to be analyzed when monitoring UMTS networks Covers the essential facts on signaling procedures by providing first hand information taken from real LTE/EPC traces A useful reference on the topic, also providing sufficient details for test and measurement experts who need to analyze LTE/EPC signaling procedures and measurements at the most detailed level Contains a description of LTE air interface monitoring scenarios as well as other key topics up to an advanced level LTE Signaling, Troubleshooting and Optimization is the Long Term Evolution successor to the previous Wiley books UMTS Signaling and UMTS Performance Measurement.

Download or read book Security of Information and Communication Networks written by Stamatios V. Kartalopoulos and published by John Wiley & Sons. This book was released on 2009-03-11 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: 2009 CHOICE AWARD OUTSTANDING ACADEMIC TITLE Information and communications security is a hot topic in private industry as well as in government agencies. This book provides a complete conceptual treatment of securing information and transporting it over a secure network in a manner that does not require a strong mathematical background. It stresses why information security is important, what is being done about it, how it applies to networks, and an overview of its key issues. It is written for anyone who needs to understand these important topics at a conceptual rather than a technical level.