Download or read book QoS Issues and QoS Constrained Design of Wireless Sensor Networks written by and published by . This book was released on 2006 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most existing research in wireless sensor networks (WSNs) has been focused on proposing protocols to facilitate either energy effient communication or sensing operation in WSNs. We believe that there exist fundamental limits in the operations and the parameters of WSNs. Characterizing these fundamental limits, establishing the relationships between the parameters and the WSN performance, and identifying the tradeoffs among different performance measures can provide us insights in designing sensor networks. In this dissertation, the QoS properties of WSNs, including the coverage, reachability, and delay, are analyzed in an analytical framework. How the network parameters, such as the node density, sensing range, transmission range, impact the aforementioned QoS properties are investigated by abstracting the randomly deployed WSNs as random geometric graphs. Both homogenous and heterogenous sensor networks are addressed. Based on the analytical model, optimal sensor network parameters can be chosen to improve the network performance while achieving pre-specified QoS constraints. Besides this abstraction, practical issues affecting the QoS performance of WSNs are also examined by doing extensive simulations in this dissertation. Specifically, results are obtained for the QoS properties in the flooding of WSN when a cross-layer approach is adopted, and other practical issues such as channel fading and MAC layer contention are taken into account. The results show that exchanging more information across the layers can help improve effciency of the protocol. It is further shown that wireless fading helps to reduce the hop count, although it makes the transmission range less predictable and limits the improvement in the performance of such cross-layer design in WSNs.

Download or read book QoS Routing Algorithms for Wireless Sensor Networks written by K. R. Venugopal and published by Springer Nature. This book was released on 2020-02-28 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a systematic introduction to the fundamental concepts, major challenges, and effective solutions for Quality of Service in Wireless Sensor Networks (WSNs). Unlike other books on the topic, it focuses on the networking aspects of WSNs, discussing the most important networking issues, including network architecture design, medium access control, routing and data dissemination, node clustering, node localization, query processing, data aggregation, transport and quality of service, time synchronization, and network security. Featuring contributions from researchers, this book strikes a balance between fundamental concepts and new technologies, providing readers with unprecedented insights into WSNs from a networking perspective. It is essential reading for a broad audience, including academics, research engineers, and practitioners, particularly postgraduate/postdoctoral researchers and engineers in industry. It is also suitable as a textbook or supplementary reading for graduate computer engineering and computer science courses.

Download or read book Smart Wireless Sensor Networks written by Yen Kheng Tan and published by IntechOpen. This book was released on 2010-12-14 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: The recent development of communication and sensor technology results in the growth of a new attractive and challenging area - wireless sensor networks (WSNs). A wireless sensor network which consists of a large number of sensor nodes is deployed in environmental fields to serve various applications. Facilitated with the ability of wireless communication and intelligent computation, these nodes become smart sensors which do not only perceive ambient physical parameters but also be able to process information, cooperate with each other and self-organize into the network. These new features assist the sensor nodes as well as the network to operate more efficiently in terms of both data acquisition and energy consumption. Special purposes of the applications require design and operation of WSNs different from conventional networks such as the internet. The network design must take into account of the objectives of specific applications. The nature of deployed environment must be considered. The limited of sensor nodes resources such as memory, computational ability, communication bandwidth and energy source are the challenges in network design. A smart wireless sensor network must be able to deal with these constraints as well as to guarantee the connectivity, coverage, reliability and security of network's operation for a maximized lifetime. This book discusses various aspects of designing such smart wireless sensor networks. Main topics includes: design methodologies, network protocols and algorithms, quality of service management, coverage optimization, time synchronization and security techniques for sensor networks.

Download or read book Wireless Sensor Networks QoS Perspective written by Vivek Deshpande and published by . This book was released on 2019-09-15 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: Currently, Cyber Physical Systems (CPS) and/or IoT play predominant roles in the cloud communication domain. The main aspects of these types of systems are Wireless Sensor Networks, Cloud and Communication Networks. The data which needs to be disseminated from multiple sources to the destination base station, or sink, is of vital significance. There are many problems which can occur when data is conveyed to the sink. The sink is connected to the cloud via a communication network. The congestion, reliability, delay, fairness, etc. are all of main concern. These can be treated as Quality of Service parameters that govern the performance of the CPS. Above all, energy consumption is the main constrain for WSN node. It is extremely difficult to obtain good QoS by keeping energy consumption low. Even the response of one of QoS parameter depends on the many other QoS parameters. Care must be taken on all QoS parameters in order to improve the performance of the wireless sensor networks. This Quality of Services may improve the application base of the CPS. With the QoS parameters the data dissemination along with energy optimization is affected. The performance of the WSN needs to be regularly checked against the QoS metrics for different data inputs. This may contain the periodic- or non-periodic data, event based data, transient or busty data. Topics discussed in book: Emphasis is given on QoS parameters and their improvement in Network Delay, Throughput, Packet Delivery Ratio (PDR), Packet Loss Ratio (PLR), Energy Consumption, Congestion Control, Reliability, Fairness, Delay, Jitter

Download or read book QoS in Wireless Sensor Actuator Networks and Systems written by Mário Alves and published by MDPI. This book was released on 2018-11-26 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "QoS in Wireless Sensor/Actuator Networks and Systems" that was published in JSAN

Download or read book Handbook of Sensor Networking written by John R. Vacca and published by CRC Press. This book was released on 2015-01-13 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook provides a complete professional reference and practitioner's guide to today's advanced sensor networking technologies. It focuses on both established and recent sensor networking theory, technology, and practice. Specialists at the forefront of the field address immediate and long-term challenges and explore practical solutions to a wide range of sensor networking issues. The book covers the hardware of sensor networks, wireless communication protocols, sensor networks software and architectures, wireless information networks, data manipulation, signal processing, localization, and object tracking through sensor networks.

Download or read book Wireless Sensor Networks written by Ian F. Akyildiz and published by John Wiley & Sons. This book was released on 2010-06-10 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents an in-depth study on the recent advances in Wireless Sensor Networks (WSNs). The authors describe the existing WSN applications and discuss the research efforts being undertaken in this field. Theoretical analysis and factors influencing protocol design are also highlighted. The authors explore state-of-the-art protocols for WSN protocol stack in transport, routing, data link, and physical layers. Moreover, the synchronization and localization problems in WSNs are investigated along with existing solutions. Furthermore, cross-layer solutions are described. Finally, developing areas of WSNs including sensor-actor networks, multimedia sensor networks, and WSN applications in underwater and underground environments are explored. The book is written in an accessible, textbook style, and includes problems and solutions to assist learning. Key Features: The ultimate guide to recent advances and research into WSNs Discusses the most important problems and issues that arise when programming and designing WSN systems Shows why the unique features of WSNs – self-organization, cooperation, correlation -- will enable new applications that will provide the end user with intelligence and a better understanding of the environment Provides an overview of the existing evaluation approaches for WSNs including physical testbeds and software simulation environments Includes examples and learning exercises with a solutions manual; supplemented by an accompanying website containing PPT-slides. Wireless Sensor Networks is an essential textbook for advanced students on courses in wireless communications, networking and computer science. It will also be of interest to researchers, system and chip designers, network planners, technical mangers and other professionals in these fields.

Download or read book Industrial Wireless Sensor Networks written by V. Çağrı Güngör and published by CRC Press. This book was released on 2017-12-19 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt: The collaborative nature of industrial wireless sensor networks (IWSNs) brings several advantages over traditional wired industrial monitoring and control systems, including self-organization, rapid deployment, flexibility, and inherent intelligent processing. In this regard, IWSNs play a vital role in creating more reliable, efficient, and productive industrial systems, thus improving companies’ competitiveness in the marketplace. Industrial Wireless Sensor Networks: Applications, Protocols, and Standards examines the current state of the art in industrial wireless sensor networks and outlines future directions for research. What Are the Main Challenges in Developing IWSN Systems? Featuring contributions by researchers around the world, this book explores the software and hardware platforms, protocols, and standards that are needed to address the unique challenges posed by IWSN systems. It offers an in-depth review of emerging and already deployed IWSN applications and technologies, and outlines technical issues and design objectives. In particular, the book covers radio technologies, energy harvesting techniques, and network and resource management. It also discusses issues critical to industrial applications, such as latency, fault tolerance, synchronization, real-time constraints, network security, and cross-layer design. A chapter on standards highlights the need for specific wireless communication standards for industrial applications. A Starting Point for Further Research Delving into wireless sensor networks from an industrial perspective, this comprehensive work provides readers with a better understanding of the potential advantages and research challenges of IWSN applications. A contemporary reference for anyone working at the cutting edge of industrial automation, communication systems, and networks, it will inspire further exploration in this promising research area.

Download or read book Multi constrained QoS Routing and Energy Optimization for Wireless Sensor Networks written by Evangelia Tsiontsiou and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis, we focus on routing protocols for Wireless Sensor Networks (WSNs). The main research problems in the domain of routing data packets in a multi-hop network are the optimisation of the energy and the routing under multi-criteria QoS constraints (e.g., energy, reliability, delay, ...). To address these problems, this dissertation proposes two contributions. Firstly, an optimal probabilistic routing protocol which balances the usage of energy and secondly, a routing protocol which is able to simultaneously take into account multiple QoS metrics. In fact, for balancing the energy consumption between the multiple existing links, the existing probabilistic routing protocols assign a probability to each link, either in an empirical way or depending on proportional energy level of the path. We did not know what are the optimal probabilities which lead to the optimal network lifetime. Our first contribution proposes optimal probabilities by modeling and solving a linear programming problem. As for the multi-constrainted QoS routing problem, multiple metrics are defined by RPL (a standard of IETF) but the existing protocols chose paths either according to only one metric or using a single aggregated function with multiple metrics, but never all the metrics simultaneously. In this dissertation, we first evaluate the performance of the operator calculus algebra introduced by R. Schott and S. Staples which defines an efficient algorithm allowing to find all the paths which satisfy the multiple constraints in a graph, and secondly we proposed a distributed version of this algorithm based on which a routing protocol has been designed. Both contributions are implemented in Contiki environment and simulated/emulated under Cooja (a software designed for simulating protocols of WSNs).

Download or read book Smart Wireless Sensor Networks written by Yen Kheng Tan and published by BoD – Books on Demand. This book was released on 2010-12-14 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: The recent development of communication and sensor technology results in the growth of a new attractive and challenging area - wireless sensor networks (WSNs). A wireless sensor network which consists of a large number of sensor nodes is deployed in environmental fields to serve various applications. Facilitated with the ability of wireless communication and intelligent computation, these nodes become smart sensors which do not only perceive ambient physical parameters but also be able to process information, cooperate with each other and self-organize into the network. These new features assist the sensor nodes as well as the network to operate more efficiently in terms of both data acquisition and energy consumption. Special purposes of the applications require design and operation of WSNs different from conventional networks such as the internet. The network design must take into account of the objectives of specific applications. The nature of deployed environment must be considered. The limited of sensor nodes resources such as memory, computational ability, communication bandwidth and energy source are the challenges in network design. A smart wireless sensor network must be able to deal with these constraints as well as to guarantee the connectivity, coverage, reliability and security of network's operation for a maximized lifetime. This book discusses various aspects of designing such smart wireless sensor networks. Main topics includes: design methodologies, network protocols and algorithms, quality of service management, coverage optimization, time synchronization and security techniques for sensor networks.

Download or read book Encyclopedia on Ad Hoc and Ubiquitous Computing written by Dharma P. Agrawal and published by World Scientific. This book was released on 2010 with total page 689 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ad hoc and ubiquitous computing technologies have received extensive attention in both the academia and industry with the explosive growth of wireless communication devices. These technologies are beneficial for many applications, such as offering futuristic high bandwidth access for users, and are expected to offer more exciting and efficient services, anytime and anywhere. In order to satisfy these diverse applications, the design issues of various wireless networks such as ad hoc, sensor, and mesh networks are extremely complicated and there are a number of technique challenges that need to be explored, involving every layer of the OSI protocol stack. This book aims to provide a complete understanding of these networks by investigating the evolution of ad hoc, sensor, and mesh networking technologies from theoretic concept to implementation protocols, from fundamentals to real applications. It provides the necessary background material needed to go deeper into the subject and explore the research literature. The explanation in the book is therefore sufficiently detailed to serve as a comprehensive reference for students, instructors, researchers, engineers, and other professionals, building their understanding of these networks. Sample Chapter(s). Chapter 1: Survey on Link Quality Models in Wireless Ad Hoc Networks (235 KB). Contents: Mobile Ad Hoc Networks: Survey on Link Quality Models in Wireless Ad Hoc Networks (M Lu & J Wu); Scalable Multicast Routing in Mobile Ad Hoc Networks (R Menchaca-Mendez & J J Garcia-Luna-Aceves); TCP, Congestion, and Admission Control Protocols in Ad Hoc Networks (A Mishra et al.); Wireless Ad Hoc Networks with Directional Antennas (B Alawieh et al.); Peer-to-Peer and Content Sharing in Vehicular Ad Hoc Networks (M Abuelela & S Olariu); Properties of the Vehicle-to-Vehicle Channel for Dedicated Short Range Communications (L Cheng et al.); Radio Resource Management in Cellular Relay Networks (K-D Lee & V C M Leung); Game Theoretic Tools Applied to Wireless Networks (H Liu et al.); Wireless Sensor Networks: Wireless Sensor Networks OCo Routing Protocols (A Jamalipour & M A Azim); Handling QoS Traffic in Wireless Sensor Networks (M Younis et al.); Mobility in Wireless Sensor Networks (A Asok et al.); Delay-Tolerant Mobile Sensor Networks (Y Wang & H Wu); Integration of RFID and Wireless Sensor Networks (H Liu et al.); Integrating Sensor Networks with the Semantic Web (Y Pei & B Wang); Effective Multiuser Broadcast Authentication in Wireless Sensor Networks (K Ren et al.); Security Attacks and Challenges in Wireless Sensor Networks (A-S K Pathan & C S Hong); Information Security in Wireless Sensor Networks (A Ouadjaout et al.); Wireless Mesh Networks: Network Architecture and Flow Control in Multi-Hop Wireless Mesh Networks (D Nandiraju et al.); Multi-Hop MAC: IEEE 802.11s Wireless Mesh Networks (R C Carrano et al.); Channel Assignment in Wireless Mesh Networks (W Fu et al.); Multi-Hop, Multi-Path and Load Balanced Routing in Wireless Mesh Networks (S Mishra & N Shenoy); Mobility Management in Wireless Mesh Networks (P Wu et al.); Selfishness and Security Schemes for Wireless Mesh Network (L Santhanam et al.). Readership: Advanced undergraduates and graduate students in computer engineering; instructors; researchers; engineers and other professionals."

Download or read book Wireless Sensor Networks written by Shafiullah Khan and published by CRC Press. This book was released on 2016-04-21 with total page 547 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wireless sensor networks (WSNs) utilize fast, cheap, and effective applications to imitate the human intelligence capability of sensing on a wider distributed scale. But acquiring data from the deployment area of a WSN is not always easy and multiple issues arise, including the limited resources of sensor devices run with one-time batteries. Additi

Download or read book Query Processing and Link Layer QoS Provisioning Mechanisms for Wireless Sensor Networks written by Ratnabali Biswas and published by . This book was released on 2006 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent advances in MEMS (micro-electro-mechanical systems) and radio technology has enabled development of low-cost wireless sensor networks (WSNs). Due to their ease of deployment and ad hoc connectivity, WSNs are emerging as a promising tool for a wide range of applications. Each sensor node is equipped with programmable computing, multiple-parameter sensing and wireless communication capability. Sensor nodes are however, constrained in terms of available resources such as energy, storage and computation. Such limitations make it really challenging to realize a reliable WSN infrastructure that can efficiently process different types of user queries. The objective of this dissertation is to develop energy-efficient mechanisms for enabling query processing in WSNs, despite unreliable nature of the wireless medium. The first part of this dissertation focuses on designing energy-efficient architectures for processing different kinds of user queries. Queries in WSNs can be broadly classified as location-based queries and attribute-based queries. To enable processing of long-running location-based queries, the recent trend is to evaluate queries within the WSN, so as to reduce the overall communication and energy consumption of the WSN. The in-network query processing architecture proposed in this dissertation determines optimal placement of query operators within a WSN in a decentralized manner and also adapts to continual changes in network and data properties. On the other hand, the recent trend in processing attribute-based queries is employing data-centric storage schemes that eliminate the need for flooding the WSN. In this dissertation, a novel data-centric storage scheme has been developed to determine rendezvous points for storing individual attributes depending on their correlation with other attributes. Both analytical and simulation studies have been performed to identify the conditions under which the proposed architecture is useful. The second part of this dissertation focuses on designing mechanisms for ensuring reliable and timely delivery of the sensed data. WSNs are generally deployed in inhospitable terrains and consist of a dense deployment of sensor nodes. Furthermore, wireless communication is inherently unpredictable and error-prone. Hence, it is imperative to design an efficient medium access control (MAC) protocol that facilitates guaranteed delivery of data over unreliable wireless links. In this dissertation, such an on-demand reliable MAC protocol has been proposed and its superior performance in terms of reliability, latency and scalability has been demonstrated. Furthermore, we have also proposed another MAC protocol that is both energy-efficient and reliable. The energy-efficiency of the proposed MAC protocol has been achieved by switching the sensor nodes to sleep mode when they are not involved in data communication. However in doing so, measures have been taken to avoid problems like overemitting, excessive latency and frequent changes of the radio state. Thus, our proposed MAC protocol reliably delivers sensed data with minimum power consumption, thereby attempting to reach the desirable objectives of WSNs.

Download or read book End to end QoS Network Design written by Tim Szigeti and published by Pearson Education. This book was released on 2014 with total page 1089 pages. Available in PDF, EPUB and Kindle. Book excerpt: This authoritative guide to deploying, managing, and optimizing QoS with Cisco technologies has been thoroughly revamped to reflect the newest applications, best practices, hardware, software, and tools for modern networks. This new edition focuses on complex traffic mixes with increased usage of mobile devices, wireless network access, advanced communications, and video. It reflects the growing heterogeneity of video traffic, including passive streaming video, interactive video, and immersive videoconferences. It also addresses shifting bandwidth constraints and congestion points; improved hardware, software, and tools; and emerging QoS applications in network security. The authors first introduce QoS technologies in high-to-mid-level technical detail, including protocols, tools, and relevant standards. They examine new QoS demands and requirements, identify reasons to re-evaluate current QoS designs, and present new strategic design recommendations. Next, drawing on extensive experience, they offer deep technical detail on campus wired and wireless QoS design; next-generation wiring closets; QoS design for data centers, Internet edge, WAN edge, and branches; QoS for IPsec VPNs, and more.

Download or read book Handbook of Research on Developments and Trends in Wireless Sensor Networks From Principle to Practice written by Jin, Hai and published by IGI Global. This book was released on 2010-02-28 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This book showcases the work many devoted wireless sensor network researchers all over world, and exhibits the up-to-date developments of WSNs from various perspectives"--Provided by publisher.

Download or read book Intelligent Sensor Networks written by Fei Hu and published by CRC Press. This book was released on 2012-12-15 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although governments worldwide have invested significantly in intelligent sensor network research and applications, few books cover intelligent sensor networks from a machine learning and signal processing perspective. Filling this void, Intelligent Sensor Networks: The Integration of Sensor Networks, Signal Processing and Machine Learning focuses on the close integration of sensing, networking, and smart signal processing via machine learning. Based on the world-class research of award-winning authors, the book provides a firm grounding in the fundamentals of intelligent sensor networks, including compressive sensing and sampling, distributed signal processing, and intelligent signal learning. Presenting recent research results of world-renowned sensing experts, the book is organized into three parts: Machine Learning—describes the application of machine learning and other AI principles in sensor network intelligence—covering smart sensor/transducer architecture and data representation for intelligent sensors Signal Processing—considers the optimization of sensor network performance based on digital signal processing techniques—including cross-layer integration of routing and application-specific signal processing as well as on-board image processing in wireless multimedia sensor networks for intelligent transportation systems Networking—focuses on network protocol design in order to achieve an intelligent sensor networking—covering energy-efficient opportunistic routing protocols for sensor networking and multi-agent-driven wireless sensor cooperation Maintaining a focus on "intelligent" designs, the book details signal processing principles in sensor networks. It elaborates on critical platforms for intelligent sensor networks and illustrates key applications—including target tracking, object identification, and structural health monitoring. It also includes a paradigm for validating the extent of spatiotemporal associations among data sources to enhance data cleaning in sensor networks, a sensor stream reduction application, and also considers the use of Kalman filters for attack detection in a water system sensor network that consists of water level sensors and velocity sensors.

Download or read book Wireless Sensor Networks written by Mohamed Ibnkahla and published by CRC Press. This book was released on 2017-12-19 with total page 285 pages. Available in PDF, EPUB and Kindle. Book excerpt: With classical techniques for data transmission soon reaching their limitations, cognitive approaches may offer a solution to user requirements for better coverage, connectivity, security, and energy efficiency at lower cost. Wireless Sensor Networks: A Cognitive Perspective presents a unified view of the state of the art of cognitive approaches in telecommunications. A benchmark in the field, it brings together research that has previously been scattered throughout conference and journal papers. Cutting-Edge Topics in Cognitive Communications After a review of the cognitive concept and approaches, the book outlines a generic architecture for cognition in wireless sensor networks. It then targets specific issues that need to be addressed through cognition, from cognitive radio and spectrum access to routing protocols. The book also explores how to use weighted cognitive maps to improve network lifetime through optimizing routing, medium access, and power control while fulfilling end-to-end goals. The final chapter discusses the implementation of hardware for GPS/INS-enabled wireless sensor networks. This addresses an important need for real-time node position information in many wireless sensor network applications and communication protocols. Real-World Applications of Wireless Sensor Networks using the Cognitive Concept Written in a tutorial style, the book supplies an in-depth survey of each topic, accompanied by detailed descriptions of the algorithms and protocols. It also provides a step-by-step analysis of the various communications systems through extensive computer simulations and illustrations. Examples cover environmental monitoring, vehicular communications, tracking, and more. A comprehensive overview of cognitive communications in wireless sensor networks, this work lays the foundations for readers to participate in a new era of research in this emerging field.