Search results for ""Author Yan Zhang""

This is an open access book.It offers comprehensive, self-contained knowledge on Mobile Edge Computing (MEC), which is a very promising technology for achieving intelligence in the next-generation wireless communications and computing networks.The book starts with the basic concepts, key techniques and network architectures of MEC. Then, we present the wide applications of MEC, including edge caching, 6G networks, Internet of Vehicles, and UAVs. In the last part, we present new opportunities when MEC meets blockchain, Artificial Intelligence, and distributed machine learning (e.g., federated learning). We also identify the emerging applications of MEC in pandemic, industrial Internet of Things and disaster management.The book allows an easy cross-reference owing to the broad coverage on both the principle and applications of MEC. The book is written for people interested in communications and computer networks at all levels. The primary audience includes senior undergraduates, postgraduates, educators, scientists, researchers, developers, engineers, innovators and research strategists.

Read more less

The Wireless Metropolitan Area Network (WirelessMAN) is a promising Broadband Wireless Access (BWA) technology that provides high-speed, high-bandwidth efficiency and high-capacity multimedia services for both residential and enterprise applications. Mobile WiMAX: Toward Broadband Wireless Metropolitan Area Networks examines the basic concepts, recent advances, and latest standard specifications pertinent to WirelessMANs, placing emphasis on IEEE 802.16-based WiMAX. After introducing the basics of WirelessMAN, the book addresses topics in three accessible parts. The first part focuses on radio frequency (RF), signal processing, multiple in-multiple out (MIMO) technology, and identifying challenges and possible solutions in the physical layer. An examination of protocol issues follows, including those involving medium access control (MAC), quality of service (QoS) in point-to-multi-point (PMP) and mesh networks, cross layer optimization, mobility management, handoff in heterogeneous networks, energy management, and link adaptation mechanisms. The final part considers issues regarding security, economy, and system capacity in the WiMAX.Mobile WiMAX: Toward Broadband Wireless Metropolitan Area Networks is an important resource for those interested in understanding all aspects relevant to the technical, practical, economic, and policy issues concerning WirelessMANs. It offers comprehensive practical and technical guidance on the fundamentals and recent advances in general WirelessMAN, as well as the latest standard specifications in IEEE 802.16a/c/d/e families.

Read more less

The first in the I See the Sun Series, readers follow a young girl as she travels from a small town in China to the city of Shanghai to spend time with her aunt. The unspoken message of this book is the movement from the old to the new, while still maintaining some connections with the past. It depicts some of the many choices available in China today, and the drive to be successful in a modern world. The story provides a unique introduction to the culture, family life and language of China in a way that is age-appropriate and sensitive to the true environment. Children will be able to recognize the similarities as well as the differences between their own culture and the culture of modern China. Written in both English and Mandarin Chinese, I See the Sun in China is beautifully illustrated with warm, engaging collages made from photographs, colorful paper cut-outs, and drawings. Includes country overview and glossary of unfamiliar terms. For ages 5 and up.

Read more less

Cooperative devices and mechanisms are increasingly important to enhance the performance of wireless communications and networks, with their ability to decrease power consumption and packet loss rate and increase system capacity, computation, and network resilience. Considering the wide range of applications, strategies, and benefits associated with cooperative wireless communications, researchers and product developers need a succinct understanding of relevant theory, fundamentals, and techniques to navigate this challenging field. Cooperative Wireless Communications provides just that.Assesses Applications, Benefits, and Methods of Cooperative Strategies This comprehensive reference handbook contains useful background to develop and implement cooperative mechanisms for infrastructure-based wireless systems and self-organizing multi-hop wireless networks (e.g., ad hoc, mesh, peer-to-peer, and sensor networks). It introduces key cooperative strategies and details recent improvements to a variety of cooperative mechanisms and frameworks applicable in diverse scenarios.Addressing fundamentals and techniques, this invaluable reference: Offers comprehensive guidance on technical, practical, and deployment aspects of cooperative strategies and the latest IEEE standard specifications Explores key challenges and solutions in 3G, B3G, 4G WiMAX, and ad hoc, mesh, and sensor networks Covers cooperative diversity, virtual MIMO, cognitive radio networks, and resource and mobility management Discusses energy efficiency, relaying strategy, routing, MAC, topology control, and security Provides Guidance to Resolve Key ChallengesA distinct introduction to different cooperative mechanisms, cooperation frameworks in diverse scenarios, and recent improvements to wireles

Read more less

The first in the I See the Sun Series, readers follow a young girl as she travels from a small town in China to the city of Shanghai to spend time with her aunt. The unspoken message of this book is the movement from the old to the new, while still maintaining some connections with the past. It depicts some of the many choices available in China today, and the drive to be successful in a modern world. The story provides a unique introduction to the culture, family life and language of China in a way that is age-appropriate and sensitive to the true environment. Children will be able to recognize the similarities as well as the differences between their own culture and the culture of modern China. Written in both English and Mandarin Chinese, I See the Sun in China is beautifully illustrated with warm, engaging collages made from photographs, colorful paper cut-outs, and drawings. Includes country overview and glossary of unfamiliar terms. For ages 5 and up.

Read more less

Many of the polymers we use every day are highly flammable. Historically, a large number of home fires were caused by ignited polymeric materials until legislation was introduced requiring fire retardants to be added to these materials. Fire retardants increase the time it takes for materials to ignite, providing valuable time to prevent a fire or escape. However, it has become apparent that many of the traditional treatments used as fire retardants are harmful to human health and highly persistent in the environment. With evermore polymeric materials in our homes and lives it is still highly valuable to be able to make fire retardants, but consideration must be given to their environmental impact and sustainability. Green Fire Retardants for Polymeric Materials looks at both the choice of different materials and treatments for improving the fire retardancy of polymeric materials, as well as green approaches to synthesising these fire retardants. It is a timely resource both for green chemists interested in real world applications for their work and polymer scientists keen to increase the sustainability of their products and processes.

Read more less

Multimedia service provisioning is believed to be one of the prerequisites to guarantee the success of next-generation wireless networks. Examining the role of multimedia in state-of-the-art wireless systems and networks, Broadband Mobile Multimedia: Techniques and Applications presents a collection of introductory concepts, fundamental techniques, the latest advances, and open issues in this important area.Divided into four sections, the volume begins with an introduction to various broadband wireless multimedia systems. Using video as an application example, it then focuses on the routing and cross-layer design issue of multimedia communication over multihop wireless ad hoc and sensor networks. The next section discusses issues related to multimedia communications over WLANs—a dominant part of today’s broadband wireless access networks. The book concludes with recent developments in quality-of-service (QoS) provisioning mechanisms and other enabling technologies, including middleware, mobility management, scheduling, and power control. With numerous illustrative figures and extensive references, this useful technical guide gives in-depth treatments of basic topics, a solid overview of cutting-edge advances, and a representative sampling of important research outcomes.

Read more less

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 presents the first complete cross-referenced resource exploring UMA and UMA-relevant technologies. When operating successfully, the technology supporting dual-mode enabled mobile terminals allows subscribers to roam freely and seamlessly between cellular networks. However, various technical challenges still occasionally impede clear communication. This book explores the complex issue of mobility management and emphasizes the need for intelligently designed vertical and horizontal handoff algorithms that will improve adaptability in heterogeneous wireless environments. In addition, it reviews the various strategies to guarantee Quality-of-Service (QoS) during movement and handoff. The first chapters introduce the basic technology of these systems and discuss QoS, resource management, mobility management, and security issues in UMA technology. The middle section concentrates on protocols and security challenges in UMA-related technologies, which include Bluetooth, WirelessPAN, Wi-Fi (IEEE 802.11) and WiMAX (IEEE 802.16). The final chapters present standard specifications and various applications. Comprised of contributions from world-wide experts, this book is a complete reference, offering guidance on all aspects of the technical and practical issues in UMA technology.

Read more less