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Books > Professional & Technical > Electronics & communications engineering > Communications engineering / telecommunications > Telephone technology
Group-oriented communications will play a significant role in the next generation of networks as many services, such as pay-per-view media broadcasts and the delivery of network control messages, will rely upon the ability to reliably deliver data simultaneously to a large group of users. As these networks become increasingly pervasive and these multi-user services become increasingly ubiquitous, it will become essential that a complementary suite of security solutions are deployed in order to protect these services from a broad spectrum of security threats that are unique to group communications.
As an example of convergence, the mobile phone-especially in the form of smartphone-is now ushering in new promises of seamlessness between engagement with technology and everyday common experiences. This seamlessness is not only about how one transitions between the worlds of the device and the physical environment but it also captures the transition and convergences between devices as well (i.e. laptop to smartphone, smartphone to tablet). This volume argues, however, that these transitions are far from seamless. We see divisions between online and offline, virtual and actual, here and there, taking on different cartographies, emergent forms of seams. It is these seams that this volume acknowledges, challenges and explores-socially, culturally, technologically and historically-as we move to a deeper understanding of the role and impact of mobile communication's saturation throughout the world.
A concise, updated guide to the 3GPP LTE Security Standardization specifications A welcome Revised Edition of the successful "LTE Security" addressing the security architecture for SAE/LTE, which is based on elements of the security architectures for GSM and 3G, but which needed a major redesign due to the significantly increased complexity, and different architectural and business requirements of fourth generation systems. The authors explain in detail the security mechanisms employed to meet these requirements. The specifications generated by standardization bodies only inform about how to implement the system (and this only to the extent required for interoperability), but almost never inform readers about why things are done the way they are. Furthermore, specifications tend to be readable only for a small group of experts and lack the context of the broader picture. The book fills this gap by providing first hand information from insiders who participated in decisively shaping SAE/LTE security in the relevant standardization body, 3GPP, and can therefore explain the rationale for design decisions in this area.A concise, fully updated guide to the 3GPP LTE Security Standardization specificationsDescribes the essential elements of LTE and SAE Security, written by leading experts who participated in decisively shaping SAE/LTE security in the relevant standardization body, 3GPPExplains the rationale behind the standards specifications giving readers a broader understanding of the context to these specificationsIncludes new chapters covering 3GPP work on system enhancements for MTC, plus application layer security in ETSI TC M2M and embedded smart card in ETSI SCP; Security for Machine-type Communication, Relay Node Security, and Future Challenges, including Voice over LTE, MTC, Home base stations, LIPA/SIPTO, and New Cryptographic Algorithms Essential reading for System engineers, developers and people in technical sales working in the area of LTE and LTE security, communication engineers and software developers in mobile communication field.
The wireless medium is a shared resource. If nearby devices transmit at the same time, their signals interfere, resulting in a collision. In traditional networks, collisions cause the loss of the transmitted information. For this reason, wireless networks have been designed with the assumption that interference is intrinsically harmful and must be avoided. This book, a revised version of the author's award-winning Ph.D. dissertation, takes an alternate approach: Instead of viewing interference as an inherently counterproductive phenomenon that should to be avoided, we design practical systems that transform interference into a harmless, and even a beneficial phenomenon. To achieve this goal, we consider how wireless signals interact when they interfere, and use this understanding in our system designs. Specifically, when interference occurs, the signals get mixed on the wireless medium. By understanding the parameters of this mixing, we can invert the mixing and decode the interfered packets; thus, making interference harmless. Furthermore, we can control this mixing process to create strategic interference that allow decodability at a particular receiver of interest, but prevent decodability at unintended receivers and adversaries. Hence, we can transform interference into a beneficial phenomenon that provides security. Building on this approach, we make four main contributions: We present the first WiFi receiver that can successfully reconstruct the transmitted information in the presence of packet collisions. Next, we introduce a WiFi receiver design that can decode in the presence of high-power cross-technology interference from devices like baby monitors, cordless phones, microwave ovens, or even unknown technologies. We then show how we can harness interference to improve security. In particular, we develop the first system that secures an insecure medical implant without any modification to the implant itself. Finally, we present a solution that establishes secure connections between any two WiFi devices, without having users enter passwords or use pre-shared secret keys.
From the editors of the highly successful LTE for UMTS: Evolution to LTE-Advanced, this new book examines the main technical enhancements brought by LTE-Advanced, thoroughly covering 3GPP Release 10 specifications and the main items in Release 11. Using illustrations, graphs and real-life scenarios, the authors systematically lead readers through this cutting-edge topic to provide an outlook on existing technologies as well as possible future developments. The book is structured to follow the main technical areas that will be enhanced by the LTE-Advanced specifications. The main topics covered include: Carrier Aggregation; Multiantenna MIMO Transmission, Heterogeneous Networks; Coordinated Multipoint Transmission (CoMP); Relay nodes; 3GPP milestones and IMT-Advanced process in ITU-R; and LTE-Advanced Performance Evaluation. Key features: * Leading author and editor team bring their expertise to the next generation of LTE technology * Includes tables, figures and plots illustrating the concepts or simulation results, to aid understanding of the topic, and enabling readers to be ahead of the technological advances
Mobile Applications Development with Android: Technologies and Algorithms presents advanced techniques for mobile app development, and addresses recent developments in mobile technologies and wireless networks. The book covers advanced algorithms, embedded systems, novel mobile app architecture, and mobile cloud computing paradigms. Divided into three sections, the book explores three major dimensions in the current mobile app development domain. The first section describes mobile app design and development skills, including a quick start on using Java to run an Android application on a real phone. It also introduces 2D graphics and UI design, as well as multimedia in Android mobile apps. The second part of the book delves into advanced mobile app optimization, including an overview of mobile embedded systems and architecture. Data storage in Android, mobile optimization by dynamic programming, and mobile optimization by loop scheduling are also covered. The last section of the book looks at emerging technologies, including mobile cloud computing, advanced techniques using Big Data, and mobile Big Data storage. About the Authors Meikang Qiu is an Associate Professor of Computer Science at Pace University, and an adjunct professor at Columbia University. He is an IEEE/ACM Senior Member, as well as Chair of the IEEE STC (Special Technical Community) on Smart Computing. He is an Associate Editor of a dozen of journals including IEEE Transactions on Computers and IEEE Transactions on Cloud Computing. He has published 320+ peer-reviewed journal/conference papers and won 10+ Best Paper Awards. Wenyun Dai is pursuing his PhD at Pace University. His research interests include high performance computing, mobile data privacy, resource management optimization, cloud computing, and mobile networking. His paper about mobile app privacy has been published in IEEE Transactions on Computers. Keke Gai is pursuing his PhD at Pace University. He has published over 60 peer-reviewed journal or conference papers, and has received three IEEE Best Paper Awards. His research interests include cloud computing, cyber security, combinatorial optimization, business process modeling, enterprise architecture, and Internet computing. .
The bestselling guide to getting the most out of your Android Samsung Galaxy S9 Samsung Galaxy S9 For Dummies documents all the features and capabilities of this popular smartphone, approaching them from the point of view of a user who is perhaps a bit baffled by the documentation and online support that comes with the phone. All aspects of the device are covered, from setup and configuration, to extensive use of the new features and capabilities. Whether you're looking for approachable guidance on the basics like texting, e-mailing, and accessing the internet, or more advanced topics like downloading apps, synching with a PC, and expanding the phone's potential with new software releases, this trusted resource covers it all. Take pictures, watch movies, and record videos Use maps and navigation Stay connected on social networking sites Make sense of software updates You'll want to keep this book close by, referring to it often as you explore the features and functions of your new Samsung Galaxy S9 smartphone.
As an example of convergence, the mobile phone-especially in the form of smartphone-is now ushering in new promises of seamlessness between engagement with technology and everyday common experiences. This seamlessness is not only about how one transitions between the worlds of the device and the physical environment but it also captures the transition and convergences between devices as well (i.e. laptop to smartphone, smartphone to tablet). This volume argues, however, that these transitions are far from seamless. We see divisions between online and offline, virtual and actual, here and there, taking on different cartographies, emergent forms of seams. It is these seams that this volume acknowledges, challenges and explores-socially, culturally, technologically and historically-as we move to a deeper understanding of the role and impact of mobile communication's saturation throughout the world.
Mobile phones are no longer what they used to be. Not only can users connect to the Internet anywhere and anytime, they can also use their devices to map their precise geographic coordinates and access location-specific information like restaurant reviews, historical information, and locations of other people nearby. The proliferation of location-aware mobile technologies calls for a new understanding of how we define public spaces, how we deal with locational privacy, and how networks of power are developed today. In Mobile Interfaces in Public Spaces, Adriana de Souza E. Silva and Jordan Frith examine these social and spatial changes by framing the development of location-aware technology within the context of other mobile and portable technologies such as the book, the Walkman, the iPod, and the mobile phone. These technologies work as interfaces to public spaces that is, as symbolic systems that not only filter information but also reshape communication relationships and the environment in which social interaction takes place. Yet rather than detaching people from their surroundings, the authors suggest that location-aware technologies may ultimately strengthen our connections to locations.
Put your phone system on your computer network and see the savings. See how to get started with VoIP, how it works, and why it saves you money VoIP is techspeak for "voice over Internet protocol," but it could spell "saving big bucks" for your business! Here's where to get the scoop in plain English. Find out how VoIP can save you money, how voice communication travels online, and how to choose the best way to integrate your phone system with your network at home or at the office. Using this work: discover how to Use VoIP for your business or home phone service, choose the best network type, set up VoIP on a wireless network, understand transports and services, and demonstrate VoIP's advantages to management.
Foodie and food photographer Eveline Boone shows you how to style a dish and make it look tasty, how you can take the most beautiful food photos with your camera or smartphone and the different composition techniques you can apply. With this book she proves that anyone can learn to take mouth-watering photographs as long as you have the right tools at hand.
Gain the knowledge and tools to deliver compelling mobile phone applications. Mobile and wireless application design is complex and challenging. Selecting an application technology and designing a mobile application require an understanding of the benefits, costs, context, and restrictions of the development company, end user, target device, and industry structure. "Designing the Mobile User Experience" provides the experienced product development professional with an understanding of the users, technologies, devices, design principles, techniques and industry players unique to the mobile and wireless space. Barbara Ballard describes the different components affecting the user experience and principles applicable to the mobile environment, enabling the reader to choose effective technologies, platforms, and devices, plan appropriate application features, apply pervasive design patterns, and choose and apply appropriate research techniques. "Designing the Mobile User Experience: " Provides a comprehensive guide to the mobile user experience, offering guidance to help make appropriate product development and design decisions. Gives product development professionals the tools necessary to understand development in the mobile environment. Clarifies the components affecting the user experience and principles uniquely applicable to the mobile application field. Explores industry structure and power dynamics, providing insight into how mobile technologies and platforms become available on current and future phones. Provides user interface design patterns, design resources, and user research methods for mobile user interface design. Illustrates concepts with example photographs, explanatory tables and charts, and an example application. "Designing the Mobile User Experience" is an invaluable resource for information architects, user experience planners and designers, interaction designers, human factors specialists, ergonomists, product marketing specialists, and brand managers. Managers and directors within organizations entering the mobile space, advanced students, partnership managers, software architects, solution architects, development managers, graphic designers, visual designers, and interface designers will also find this to be an excellent guide to the topic.
This easy-to-understand explanation of major aspects of today's telecommunications systems aims to give readers comprehensive coverage of the four major areas of telephone systems - station apparatus, transmission, switching and signalling. While maintaining all the fundamental information from the earlier editions, this revised and updated edition includes a perspective on telephony that includes central office, local loop, subscriber loop carrier, switching, multiplexing, LATA, signalling and network architecture. It also includes developments in fibre optic systems, information on PCS systems including GSM, TDMA, CDMA and policy implications of the US Telecommunications Act of 1996.
This book presents some of the most interesting iPhone and iPad games, along with stories of the people behind these games. It describes hundreds of titles, including well-known games and hidden games, and provides insight into the development of games for the iOS platform.
Perhaps no other technology has done so much to so many, but been studied by so few, as the telephone. Even as its physical size diminishes, the telephone is becoming more important. In Connections, now available in paperback, James E. Katz gives greater visibility to this important element in modern life. Katz examines how the telephone reveals gender relations in a way not predicted by feminist theories, how it can be used to protect and invade personal privacy, and how people harness telephone answering machines to their advantage. Katz's inquiry reports on obscene phone calls, the abuses of caller-ID technology, and attitudes toward voice mail. National data about cellular telephones are presented to show the extent to which beepers and car phones have become status symbols. Katz ranges from microsocial interaction to macrosocial theory, and from the family and personal levels of organization to that of large-scale industrial bureaucracies. The result of this investigation is a compelling mosaic spanning sociology and psychology, and organization and communication studies. These arresting portraits will offer profound insight to historians, students of American culture, and those concerned about the nature and direction of the emerging information society.
This book covers issues related to 5G network security. The authors start by providing details on network architecture and key requirements. They then outline the issues concerning security policies and various solutions that can handle these policies. Use of SDN-NFV technologies for security enhancement is also covered. The book includes intelligent solutions by utilizing the features of artificial intelligence and machine learning to improve the performance of the 5G security protocols and models. Optimization of security models is covered as a separate section with a detailed information on the security of 5G-based edge, fog, and osmotic computing. This book provides detailed guidance and reference material for academicians, professionals, and researchers. Presents extensive information and data on research and challenges in 5G networks; Covers basic architectures, models, security frameworks, and software-defined solutions for security issues in 5G networks; Provides solutions that can help in the growth of new startups as well as research directions concerning the future of 5G networks.
Recent years have witnessed an explosion of new operators and customers of cellular mobile communications and the importance of wireless/mobile communications in today's telecommunications industry is indisputable.
"John Rhodes' Videoconferencing for the Real World, is a one of the
world's most comprehensive blueprints on the awesome power of
videoconferencing."
The definitive guide to home and small business installation --
extensions, modems and telephone systems.
Designed to help readers understand all aspects of videoconferencing, this guide touches on hardware and software, selecting and accessing videoconferencing networks, developing a request for proposals, and operational and business considerations for videoconferencing. New to this edition are expanded coverage of standards and a security section.
SC-FDMA for Mobile Communications examines Single-Carrier Frequency Division Multiple Access (SC-FDMA). Explaining this rapidly evolving system for mobile communications, it describes its advantages and limitations and outlines possible solutions for addressing its current limitations. The book explores the emerging trend of cooperative communication with SC-FDMA and how it can improve the physical layer security. It considers the design of distributed coding schemes and protocols for wireless relay networks where users cooperate to send their data to the destination. Supplying you with the required foundation in cooperative communication and cooperative diversity, it presents an improved Discrete Cosine Transform (DCT)-based SC-FDMA system. It introduces a distributed space-time coding scheme and evaluates its performance and studies distributed SFC for broadband relay channels. Presents relay selection schemes for improving the physical layer Introduces a new transceiver scheme for the SC-FDMA system Describes space-time/frequency coding schemes for SC-FDMA Includes MATLAB (R) codes for all simulation experiments The book investigates Carrier Frequency Offsets (CFO) for the Single-Input Single-Output (SISO) SC-FDMA system, and Multiple-Input Multiple-Output (MIMO) SC-FDMA system simulation software. Covering the design of cooperative diversity schemes for the SC-FDMA system in the uplink direction, it also introduces and studies a new transceiver scheme for the SC-FDMA system.
This edited volume is the first book-length study focusing entirely on mobile phone use in China. Drawing on examples from a wide range of contemporary situations in China and beyond, the contributors argue that the mobile phone is in fact an important means by which one can understand a rapidly changing China, and the developing culture of mobile phone usage reflects both the cultural norms and struggle of the people. Through a theoretical comparison of usage in the West and in China, the editors assert the uniqueness of China's experience, highlighting that Chinese society is being exposed simultaneously to a rapid process of industrialization and cyberization. The contributors maintain that such density of experience under a compressed period combined with a thick cultural heritage and a country still under a dictating rule provides a unique situation and offers deep insights into Chinese culture in general. This work will be of great interest to all students and scholars of Asian communication studies, ICT and Chinese culture and society.
This book captures recent research on managing mobile technologies. It provides a handbook-style reference to professionals in different industries to help them manage the very latest technologies that have become a part of every business today.The book reviews multiple perspectives of the challenges brought by the introduction of mobile technologies into our lives. The technical perspective covers major constructs at play; the organizational perspective reviews international cases; and the personal perspective investigates the adoption of emerging applications and their impact.By reviewing multiple perspectives, readers will be able to adopt a tool to manage the complexities and challenges brought by the mobile technologies.Related Link(s)
Get more out of your coding with GitHub For today's coders, GitHub is a must. The world's largest software development platform, GitHub helps developers store, track, and collaborate on software projects. In this easy-to-follow Dummies guide, you'll find insight into creating repositories, establishing projects, collaborating, incorporating open-source resources, and establishing yourself as a valued member of the GitHub community. With a working knowledge of GitHub, you'll be a better, more employable programmer. The simple instructions and interactive examples in this book will get you there quickly. Get the instructions you need for using GitHub to collaborate on software projects Become more attractive to employers with knowledge and experience in the largest development platform Set up GitHub Desktop, create a repository, and launch your first project Use GitHub Skills courses to learn new tricks, for beginners to pros You've learned how to write a little code--now learn how to share it with GitHub.
Emerging Location Aware Broadband Wireless Ad Hoc Networks is a compilation of new material on wireless networking and technology addressing several technical challenges in the field. The contributions are authored by distinguished experts who presented experimental results on their work at the recent International Symposium on Personal, Indoor, Mobile, Radio Communications (PIMRC) held in Barcelona, Spain, September 5-8, 2004. The authors present new results on issues involving wireless LANs and ad hoc networks; mobile wireless internet and satellite applications; encoding, algorithms and performance; and issues related to overlay networks, cross layer interactions and smart antennas. Whether you re a telecommunications/networking specialist, systems engineer or a scientist, Emerging Location Aware Broadband Wireless Ad Hoc Networks provides valuable insight from experts in wireless networking for developing wireless systems and meeting future application requirements. |
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