Download or read book Achieving Collision Avoidance and Fairness in CSMA based Wireless Mesh Networks written by Jung Il Choi and published by Stanford University. This book was released on 2011 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt: CSMA-based wireless mesh networks are vulnerable to collisions. Even a single unicast flow can exhibit excessive collisions from hidden terminals. Furthermore, fairness objectives for single-hop networks can cause undesirable behaviors for mesh networks. Mesh networks of wireless sensors suffer from undesirable protocol interactions due to these challenges. Inter-protocol collisions and unfair channel usage between protocols cause the behavior of one protocol to change depending on other protocols. These inter-protocol interactions complicate the design of large sensor network systems. Motivated by these problems, this dissertation presents grant-to-send, a novel collision avoidance mechanism for wireless mesh networks. Rather than announce packets it intends to send, a node using grant-to-send announces packets it expects to hear others send. This dissertation provides evidence that inverting collision avoidance in this way greatly improves wireless mesh performance without significant overhead. Grant-to-send is simple to implement, and is compatible with existing hardware. Grant-to-send is also general enough to replace protocol-specific collision avoidance mechanisms common to sensor network protocols. While these individual mechanisms only avoid intra-protocol collisions, grant-to-send provides a MAC mechanism which can address both intra- and inter-protocol collisions. This dissertation also proposes a fairness scheme for mesh networks, which can be applied to protocol fairness. The fairness scheme combines and modifies traditional flow-based fairness techniques such as fair queueing and fair scheduling. However, the complexities of wireless make these mechanisms insufficient by themselves. This dissertation therefore proposes two new mechanisms that address these limitations, channel decay and fair cancellation, and shows that the fairness scheme can significantly improve protocol fairness. Together, this dissertation shows that achieving collision avoidance and fairness can make mesh networks perform better, more reliable, and thus easier to design.
Download or read book Guide to Wireless Mesh Networks written by Sudip Misra and published by Springer Science & Business Media. This book was released on 2009-02-19 with total page 537 pages. Available in PDF, EPUB and Kindle. Book excerpt: Overview and Goals Wireless communication technologies are undergoing rapid advancements. The last few years have experienced a steep growth in research in the area of wireless mesh networks (WMNs). The attractiveness of WMNs, in general, is attributed to their characteristics such as the ability to dynamically self-organize and self-con?gure, coupled with the ability to maintain mesh connectivity leading, in effect, to low set-up/installation costs, simpler maintenance tasks, and service coverage with high reliability and fault-tolerance. WMNs also support their integration with existing wireless networks such as cellular networks, WLANs, wireless-?delity (Wi-Fi), and worldwide interoperability of microwave access (WiMAX). WMNs have found u- ful applications in a broad range of domains such as broadband home networking, commercial/business networking, and community networking – particularly attr- tive in offering broadband wireless access with low initial installation and set-up costs. Even though WMNs have emerged to be attractive and they hold great promises for our future, there are several challenges that need to be addressed. Some of the wellknownchallenges areattributedtoissuesrelatingtoscalability(signi?cantdrop in throughput with the increase in the number of nodes), multicasting, offering qu- ity of service guarantees, energy ef?ciency, and security. This handbook attempts to provide a comprehensive guide on fundamental key topics coupled with new ideas and results in the areas of WMNs. The book has been prepared keeping in mind that it needs to prove itself to be a valuable resource dealing with both the important core and the specialized issues in WMNs.
Download or read book E Business and Telecommunications written by Mohammad S. Obaidat and published by Springer. This book was released on 2016-03-01 with total page 545 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 12th International Joint Conference on E-Business and Telecommunications, ICETE 2015, held in Colmar, France, in July 2015. ICETE is a joint international conference integrating four major areas of knowledge that are divided into six corresponding conferences: International Conference on Data Communication Networking, DCNET; International Conference on E-Business, ICE-B; International Conference on Optical Communication Systems, OPTICS; International Conference on Security and Cryptography, SECRYPT; International Conference on Wireless Information Systems, WINSYS; and International Conference on Signal Processing and Multimedia, SIGMAP. The 23 full papers presented together with an invited paper in this volume were carefully reviewed and selected from 218 submissions. The papers cover the following key areas of e-business and telecommunications: data communication networking; e-business; optical communication systems; security and cryptography; signal processing and multimedia applications; wireless information networks and systems.
Download or read book Wireless Mesh Networks written by Ian F. Akyildiz and published by John Wiley & Sons. This book was released on 2009-04-27 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: Going beyond classic networking principles and architectures for better wireless performance Written by authors with vast experience in academia and industry, Wireless Mesh Networks provides its readers with a thorough overview and in-depth understanding of the state-of-the-art in wireless mesh networking. It offers guidance on how to develop new ideas to advance this technology, and how to support emerging applications and services. The contents of the book follow the TCP/IP protocol stack, starting from the physical layer. Functionalities and existing protocols and algorithms for each protocol layer are covered in depth. The book is written in an accessible textbook style, and contains supporting materials such as problems and exercises to assist learning. Key Features: Presents an in-depth explanation of recent advances and open research issues in wireless mesh networking, and offers concrete and comprehensive material to guide deployment and product development Describes system architectures and applications of wireless mesh networks (WMNs), and discusses the critical factors influencing protocol design Explores theoretical network capacity and the state-of-the-art protocols related to WMNs Surveys standards that have been specified and standard drafts that are being specified for WMNs, in particular the latest standardization results in IEEE 802.11s, 802.15.5, 802.16 mesh mode, and 802.16 relay mode Includes an accompanying website with PPT-slides, further reading, tutorial material, exercises, and solutions Advanced students on networking, computer science, and electrical engineering courses will find Wireless Mesh Networks an essential read. It will also be of interest to wireless networking academics, researchers, and engineers at universities and in industry.
Download or read book Wireless Mesh Networks written by Nobuo Funabiki and published by BoD – Books on Demand. This book was released on 2011-01-14 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: The rapid advancements of low-cost small-size devices for wireless communications with their international standards and broadband backbone networks using optical fibers accelerate the deployment of wireless networks around the world. The wireless mesh network has emerged as the generalization of the conventional wireless network. However, wireless mesh network has several problems to be solved before being deployed as the fundamental network infrastructure for daily use. The book is edited to specify some problems that come from the disadvantages in wireless mesh network and give their solutions with challenges. The contents of this book consist of two parts: Part I covers the fundamental technical issues in wireless mesh network, and Part II the administrative technical issues in wireless mesh network,. This book can be useful as a reference for researchers, engineers, students and educators who have some backgrounds in computer networks, and who have interest in wireless mesh network. It is a collective work of excellent contributions by experts in wireless mesh network.
Download or read book Information Science and Applications ICISA 2016 written by Kuinam J. Kim and published by Springer. This book was released on 2016-02-15 with total page 1439 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains selected papers from the 7th International Conference on Information Science and Applications (ICISA 2016) and provides a snapshot of the latest issues encountered in technical convergence and convergences of security technology. It explores how information science is core to most current research, industrial and commercial activities and consists of contributions covering topics including Ubiquitous Computing, Networks and Information Systems, Multimedia and Visualization, Middleware and Operating Systems, Security and Privacy, Data Mining and Artificial Intelligence, Software Engineering, and Web Technology. The contributions describe the most recent developments in information technology and ideas, applications and problems related to technology convergence, illustrated through case studies, and reviews converging existing security techniques. Through this volume, readers will gain an understanding of the current state-of-the-art information strategies and technologies of convergence security. The intended readers are researchers in academia, industry and other research institutes focusing on information science and technology.
Download or read book Wireless Mesh Networking written by Yan Zhang and published by CRC Press. This book was released on 2006-12-13 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt: A promising new technology, wireless mesh networks are playing an increasingly important role in the future generations of wireless mobile networks. Characterized by dynamic self-organization, self-configuration, and self-healing to enable quick deployment, easy maintenance, low cost, high scalability, and reliable services, this technology is beco
Download or read book WiMAX written by Syed A. Ahson and published by CRC Press. This book was released on 2018-10-03 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the demand for broadband services continues to grow worldwide, traditional solutions, such as digital cable and fiber optics, are often difficult and expensive to implement, especially in rural and remote areas. The emerging WiMAX system satisfies the growing need for high data-rate applications such as voiceover IP, video conferencing, interactive gaming, and multimedia streaming. WiMAX deployments not only serve residential and enterprise users but can also be deployed as a backhaul for Wi-Fi hotspots or 3G cellular towers. By providing affordable wireless broadband access, the technology of WiMAX will revolutionize broadband communications in the developed world and bridge the digital divide in developing countries. Part of the WiMAX Handbook, this volume focuses on the applications of WiMAX. The book describes the logical architecture of IEEE 802.16, introduces some of the main IEEE 802.16 family standards, compares WiMAX to Wi-Fi, and studies the feasibility of supporting VoIP over WiMAX. It also looks at the residential use of WiMAX as well as the strategies of using WiMAX in remote locales and rural communities. In addition, the book examines the backhaul requirements of a large fixed wireless network and the problem of centralized routing and scheduling for IEEE 802.16 mesh networks. With the revolutionary technology of WiMAX, the lives of many will undoubtedly improve, thereby leading to greater economic empowerment.
Download or read book Multiple Access Communications written by Claudio Sacchi and published by Springer. This book was released on 2011-09-08 with total page 267 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 4th International Workshop on Multiple Access Communications, MACOM 2011, held in Trento, Italy, in September 2011. The 21 full papers presented were carefully reviewed and selected from more than 40 submissions. They are divided in topical sections on cognitive radio; MAC protocols; communications theory; special session on MAC protocols for WSNs; system analysis and scheduling; and queuing systems.
Download or read book Unlicensed Mobile Access Technology written by Yan Zhang and published by CRC Press. This book was released on 2008-08-28 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of Unlicensed Mobile Access (UMA) is to provide seamless access to GSM and GPRS mobile service networks via unlicensed spectrum technologies, including Bluetooth, WiMAX, and Wi-Fi. Expanding on the level of knowledge in this growing field, Unlicensed Mobile Access Technology: Protocols, Architectures, Security, Standards, and Applications
Download or read book Wireless and Cellular Communications written by William C. Y. Lee and published by McGraw Hill Professional. This book was released on 2005-11-16 with total page 851 pages. Available in PDF, EPUB and Kindle. Book excerpt: Publisher's Note: Products purchased from Third Party sellers are not guaranteed by the publisher for quality, authenticity, or access to any online entitlements included with the product.The wireless pioneer William C.Y. Lee, technology leader and author of the #1 book on wireless communications, has now completely updated his classic. This all-new, in-depth engineering guide for both voice and data services, Wi-Fi, 3G, WiMAX, and more, is essential reading for anyone working in this dynamic field. On-the-ground engineering coverage of B2G, 3G, B3G, 4G, and all other major systems Specifications for AMPS, GSM Family, iDEN, PHS, cdmaOne, WCDMA, HSDPA, CDMA2000, EV-DO, EV-DV, TD-SCDMA, Wi-Fi, WiMAX, etc. Antenna specifications for base stations and handsets Introduction of new technologies -- CS-OFDM, MIMO, LDPC, Turbo Code, CCK Code, RFID, etc. Engineering parameters for portable systems, Wi-Fi, Bluetooth, UWB, ZigBee, IR, and more Intelligent Cells -- All IP, in-building systems, etc. Intelligent Networks -- All IP, ad hoc, mesh, sensor, etc. Switches -- Circuit, Packet, ATM, Soft, etc. INSIDE: INSIGHTFUL, IN-DEPTH ENGINEERING * Introduction to Wireless Communications * Introduction to Cellular Systems * Specification of Analog Cellular Systems * Specification of Digital Cellular Systems * Specification of Newly Mobile Systems * Specification of WLAN and WMAN Systems * Cell Coverage and Antennas * Cochannel Interference * Types of Noncochannel Interference * Frequency Management and Channel Assignment * Handoffs and Dropped Calls * Operational Technology and Techniques * Switching and Traffic * Data Links and Microwaves * System Evaluations * Intelligent Cell Concept * Intelligent and All-IP Networks * Mobile Communications-Related Topics * 4G Perspectives
Download or read book Parallel and Distributed Processing and Applications written by Ivan Stojmenovic and published by Springer Science & Business Media. This book was released on 2007-08-14 with total page 1013 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 5th International Symposium on Parallel and Distributed Processing and Applications, ISPA 2007, held in Niagara Falls, Canada, in August 2007. The 83 revised full papers presented together with 3 keynote speeches were carefully reviewed and selected from 244 submissions. The papers are organized in topical sections on algorithms and applications, architectures and systems, datamining and databases, fault tolerance and security, middleware and cooperative computing, networks, as well as software and languages.
Download or read book Multiple Access Protocols written by Raphael Rom and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computer communication networks have come of age. Today, there is hardly any professional, particularly in engineering, that has not been the user of such a network. This proliferation requires the thorough understanding of the behavior of networks by those who are responsible for their operation as well as by those whose task it is to design such networks. This is probably the reason for the large number of books, monographs, and articles treating relevant issues, problems, and solutions in this field. Among all computer network architectures, those based on broadcast mul tiple access channels stand out in their uniqueness. These networks appear naturally in environments requiring user mobility where the use of any fixed wiring is impossible and a wireless channel is the only available option. Because of their desirable characteristics multiple access networks are now used even in environments where a wired point-to-point network could have been installed. The understanding of the operation of multiple access network through their performance analysis is the focus of this book.
Download or read book 802 11ac A Survival Guide written by Matthew S. Gast and published by "O'Reilly Media, Inc.". This book was released on 2013-07-23 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: The next frontier for wireless LANs is 802.11ac, a standard that increases throughput beyond one gigabit per second. This concise guide provides in-depth information to help you plan for 802.11ac, with technical details on design, network operations, deployment, and monitoring. Author Matthew Gast—an industry expert who led the development of 802.11-2012 and security task groups at the Wi-Fi Alliance—explains how 802.11ac will not only increase the speed of your network, but its capacity as well. Whether you need to serve more clients with your current level of throughput, or serve your existing client load with higher throughput, 802.11ac is the solution. This book gets you started. Understand how the 802.11ac protocol works to improve the speed and capacity of a wireless LAN Explore how beamforming increases speed capacity by improving link margin, and lays the foundation for multi-user MIMO Learn how multi-user MIMO increases capacity by enabling an AP to send data to multiple clients simultaneously Plan when and how to upgrade your network to 802.11ac by evaluating client devices, applications, and network connections
Download or read book Wireless Sensor Networks written by Mohammad Abdul Matin and published by BoD – Books on Demand. This book was released on 2012-09-06 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explores both the state-of-the-art and the latest developments in wireless sensor networks technology. It describes the fundamental concepts and practical aspects of wireless sensor networks and addresses challenges faced in their design, analysis and deployment. It is believed that the book will serve as a comprehensive reference for graduate and undergraduate senior students who seek to learn the latest developments in wireless sensor networks.
Download or read book Wireless Sensor Networks written by Kazem Sohraby and published by John Wiley & Sons. This book was released on 2007-04-06 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: Infrastructure for Homeland Security Environments Wireless Sensor Networks helps readers discover the emerging field of low-cost standards-based sensors that promise a high order of spatial and temporal resolution and accuracy in an ever-increasing universe of applications. It shares the latest advances in science and engineering paving the way towards a large plethora of new applications in such areas as infrastructure protection and security, healthcare, energy, food safety, RFID, ZigBee, and processing. Unlike other books on wireless sensor networks that focus on limited topics in the field, this book is a broad introduction that covers all the major technology, standards, and application topics. It contains everything readers need to know to enter this burgeoning field, including current applications and promising research and development; communication and networking protocols; middleware architecture for wireless sensor networks; and security and management. The straightforward and engaging writing style of this book makes even complex concepts and processes easy to follow and understand. In addition, it offers several features that help readers grasp the material and then apply their knowledge in designing their own wireless sensor network systems: * Examples illustrate how concepts are applied to the development and application of * wireless sensor networks * Detailed case studies set forth all the steps of design and implementation needed to solve real-world problems * Chapter conclusions that serve as an excellent review by stressing the chapter's key concepts * References in each chapter guide readers to in-depth discussions of individual topics This book is ideal for networking designers and engineers who want to fully exploit this new technology and for government employees who are concerned about homeland security. With its examples, it is appropriate for use as a coursebook for upper-level undergraduates and graduate students.
Download or read book Internet of Things and Sensors Networks in 5G Wireless Communications written by Lei Zhang and published by MDPI. This book was released on 2020-01-24 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Internet of Things (IoT) has attracted much attention from society, industry and academia as a promising technology that can enhance day to day activities, and the creation of new business models, products and services, and serve as a broad source of research topics and ideas. A future digital society is envisioned, composed of numerous wireless connected sensors and devices. Driven by huge demand, the massive IoT (mIoT) or massive machine type communication (mMTC) has been identified as one of the three main communication scenarios for 5G. In addition to connectivity, computing and storage and data management are also long-standing issues for low-cost devices and sensors. The book is a collection of outstanding technical research and industrial papers covering new research results, with a wide range of features within the 5G-and-beyond framework. It provides a range of discussions of the major research challenges and achievements within this topic.
