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Author: Chong-Jing Chen Publisher: ISBN: 9781109509304 Category : Languages : en Pages : 153
Book Description
Wireless technologies have enabled mobility and convenience by eliminating cumbersome wires. Wireless sensor nodes must be made small and low power without sacrificing performance. In addition to task scheduling, the densely distributed wireless sensor nodes must run communication protocols to achieve better utilization and reliable communication. While many researchers work on wireless sensor networks that are densely distributed, they assume low duty cycling and trivial data rate. Unfortunately, this is a great mismatch with many real-world applications that require the high data rate. Furthermore, most wireless communication protocols are too complicated to be used on compact wireless sensor nodes with limited RAM and ROM. To address these issues, we propose a lightweight multiple access control protocol to enable relatively high data rate and densely distributed deployment. It can achieve reliable communication on resource-constrained wireless sensor nodes and minimizes the protocol complexity to reduce the memory footprint. The protocol can also work under high utilization of air bandwidth without collision. While civil engineers are concerned about the sampling rate at 100 Hz for structure monitoring. our system with this protocol can scale up to 50 wireless sensor nodes and streamreal-time data in the same frequency channel at 100 Hz sampling rate. We also propose a compact, multi-channel protocol with high scalability and small memory footprint. This multiple access control protocol enables wireless sensor nodes to transmit sensing data over multiple frequency channels to achieve a higher throughput than a system with only a single frequency channel. We integrate our protocol with a giant tiled display system, HIPerWall, to show the real-time sensing data at a high resolution without downsampling. Last, we perform a thorough evaluation to study the channel characteristics of a wearable wireless sensor node. We vary several different parameters, the RF transmission power, distance, height, and angle to observe the packet loss rates. These experimental results can be used for constructing a more reliable wireless communication for wireless sensor networks.
Author: Chong-Jing Chen Publisher: ISBN: 9781109509304 Category : Languages : en Pages : 153
Book Description
Wireless technologies have enabled mobility and convenience by eliminating cumbersome wires. Wireless sensor nodes must be made small and low power without sacrificing performance. In addition to task scheduling, the densely distributed wireless sensor nodes must run communication protocols to achieve better utilization and reliable communication. While many researchers work on wireless sensor networks that are densely distributed, they assume low duty cycling and trivial data rate. Unfortunately, this is a great mismatch with many real-world applications that require the high data rate. Furthermore, most wireless communication protocols are too complicated to be used on compact wireless sensor nodes with limited RAM and ROM. To address these issues, we propose a lightweight multiple access control protocol to enable relatively high data rate and densely distributed deployment. It can achieve reliable communication on resource-constrained wireless sensor nodes and minimizes the protocol complexity to reduce the memory footprint. The protocol can also work under high utilization of air bandwidth without collision. While civil engineers are concerned about the sampling rate at 100 Hz for structure monitoring. our system with this protocol can scale up to 50 wireless sensor nodes and streamreal-time data in the same frequency channel at 100 Hz sampling rate. We also propose a compact, multi-channel protocol with high scalability and small memory footprint. This multiple access control protocol enables wireless sensor nodes to transmit sensing data over multiple frequency channels to achieve a higher throughput than a system with only a single frequency channel. We integrate our protocol with a giant tiled display system, HIPerWall, to show the real-time sensing data at a high resolution without downsampling. Last, we perform a thorough evaluation to study the channel characteristics of a wearable wireless sensor node. We vary several different parameters, the RF transmission power, distance, height, and angle to observe the packet loss rates. These experimental results can be used for constructing a more reliable wireless communication for wireless sensor networks.
Author: Zaman, Noor Publisher: IGI Global ISBN: 1466601027 Category : Technology & Engineering Languages : en Pages : 656
Book Description
"This book focuses on wireless sensor networks and their operation, covering topics including routing, energy efficiency and management"--
Author: Pedro José Marrón Publisher: Springer Science & Business Media ISBN: 3642191851 Category : Computers Languages : en Pages : 236
Book Description
This book constitutes the refereed proceedings of the 8th European Conference on Wireless Sensor Networks, EWSN 2011, held in Bonn, Germany, in February 2011. The 14 revised full papers presented were carefully reviewed and selected from 87 submissions. The papers are organized in topical sections on routing and mobility, optimization techniques, MAC protocols, algorithms, and systems and abstractions.
Author: Kazem Sohraby Publisher: John Wiley & Sons ISBN: 0470112751 Category : Technology & Engineering Languages : en Pages : 325
Book Description
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.
Author: Patrick Sénac Publisher: Springer Science & Business Media ISBN: 3642291562 Category : Computers Languages : en Pages : 467
Book Description
This book constitutes the thoroughly refereed post-conference proceedings of the First International ICST Conference on Wireless Communications and Applications, ICWCA 2011, held in Sanya, China, in August 2011. The 43 revised full papers presented were carefully reviewed and selected from around 90 submissions and cover a wide range of topics as mobile ad hoc networks, sensor networks, network architectural design, network protocol design, local area networks, MAC, routing, and transport protocols, quality of service provisioning, reliability and fault tolerance issues, resource allocation and management, signal processing, medical imaging, data aggregation techniques, security and privacy issues, wireless computing and applications for wireless network as smart grid, agriculture, health care, smart home, conditional monitoring, etc.
Author: Matin, M.A. Publisher: IGI Global ISBN: 1466651717 Category : Technology & Engineering Languages : en Pages : 638
Book Description
"This book brings together advanced research on diverse topics in wireless communications and networking, including the latest developments in broadband technologies, mobile communications, wireless sensor networks, network security, and cognitive radio networks"--
Author: Geyong Ming Publisher: Nova Publishers ISBN: 9781600217135 Category : Computers Languages : en Pages : 498
Book Description
Recent years have witnessed tremendous growth in the population of mobile users demanding high performance, reliability and quality-of-service (QoS). Wireless networks are undergoing rapid developments and dramatic changes in the underlying technologies, in order to cope with the difficulties posed by the scarce wireless resource as well as keep up with the increasing day-to-day demand for cost-effective service of multimedia applications. Predicting and optimising the performance and QoS of wireless networks using analytical modelling, simulation experiments, monitoring and testbed-based measurements are crucial to the proper design, tuning, resource management and capacity planning of such networks. This book is dedicated to review important developments and results, explore recent state-of-the-art research and discuss new strategies for performance modelling, analysis and enhancement of wireless networks. The objective is to make analytical modelling, simulation and measurement tools, and innovative performance evaluation methodology possible and understandable to a wider audience.
Author: Habib M. Ammari Publisher: Springer Science & Business Media ISBN: 3642400094 Category : Technology & Engineering Languages : en Pages : 826
Book Description
During the last one and a half decades, wireless sensor networks have witnessed significant growth and tremendous development in both academia and industry. “The Art of Wireless Sensor Networks: Volume 1: Fundamentals” focuses on the fundamentals concepts in the design, analysis, and implementation of wireless sensor networks. It covers the various layers of the lifecycle of this type of network from the physical layer up to the application layer. Its rationale is that the first volume covers contemporary design issues, tools, and protocols for radio-based two-dimensional terrestrial sensor networks. All the book chapters in this volume include up-to-date research work spanning various classic facets of the physical properties and functional behavior of wireless sensor networks, including physical layer, medium access control, data routing, topology management, mobility management, localization, task management, data management, data gathering, security, middleware, sensor technology, standards, and operating systems. This book will be an excellent source of information for both senior undergraduate and graduate students majoring in computer science, computer engineering, electrical engineering, or any related discipline. In addition, computer scientists, researchers, and practitioners in both academia and industry will find this book useful and interesting.
Author: Selig, Marc Publisher: kassel university press GmbH ISBN: 373760178X Category : Languages : en Pages : 123
Book Description
A wireless sensor network with single-antenna sensors on the transmitter side and an access point (AP) equipped with multiple antennas on the receiver side is considered. In order to reduce the number of outages resulting from the noise amplification by the linear reconstruction within the successive interference cancellation (SIC) procedure, the AP is given the possibility to request retransmissions of signals from selected sensors in a subsequent time slot (TS). In case retransmissions are needed also in the subsequent time slot, the AP postpones the signal detection until all requested signals have been retransmitted making the signal detection a recursive procedure. The number of sensors required to retransmit depends on the order of the processed sensor signals within the SIC procedure. We propose an optimal algorithm based on a QR-decomposition and a depth-first search through all possible decoding orders, which finds the decoding order necessitating a minimum number of retransmissions suitable for zero-forcing (ZF) and minimum mean square error (MMSE) linear reconstruction approaches. Since the computational complexity of the optimal algorithm is high, different suboptimal algorithms with lower computational complexity are proposed for the case of ZFSIC and MMSE-SIC, respectively. The recursive nature of the retransmission procedure may lead to an unlimited detection delay, because the linear reconstruction followed by SIC starts only when no sensor needs a retransmission from the previous TS. By reducing the number of transmitting sensors for a fixed number of receiving antennas the receive diversity of the AP can be exploited, which leads to less retransmissions. Therefore, we propose an optimal transmit policy, which selects the best set of sensors to maximize the system throughput. This optimal transmit policy is found by means of a Markov decision process in combination with dynamic programming.
Author: Chong-Jing Chen
Author: Chong-Jing Chen
Author: Zaman, Noor
Author: Pedro José Marrón
Author: Kazem Sohraby
Author: Patrick Sénac
Author: Xiaolong Zheng
Author: Matin, M.A.
Author: Geyong Ming
Author: Habib M. Ammari
Author: Selig, Marc