Download or read book Robust and Efficient Localization Techniques for Cellular and Wireless Sensor Networks written by Haseebulla M. Khan and published by . This book was released on 2005 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Secure Localization and Time Synchronization for Wireless Sensor and Ad Hoc Networks written by Radha Poovendran and published by Springer Science & Business Media. This book was released on 2007-12-03 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the latest research results in the area of secure localization for both wireless mobile ad hoc networks and wireless sensor networks. It is suitable as a text for computer science courses in wireless systems and security. It includes implementation studies with mica2 mote sensors. Due to the open spectrum nature of wireless communication, it is subject to attacks and intrusions. Hence the wireless network synchronization needs to be both robust and secure. Furthermore, issues such as energy constraints and mobility make the localization process even more challenging. The book will also interest developers of secure wireless systems.

Download or read book Localization Algorithms and Strategies for Wireless Sensor Networks Monitoring and Surveillance Techniques for Target Tracking written by Mao, Guoqiang and published by IGI Global. This book was released on 2009-05-31 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wireless localization techniques are an area that has attracted interest from both industry and academia, with self-localization capability providing a highly desirable characteristic of wireless sensor networks. Localization Algorithms and Strategies for Wireless Sensor Networks encompasses the significant and fast growing area of wireless localization techniques. This book provides comprehensive and up-to-date coverage of topics and fundamental theories underpinning measurement techniques and localization algorithms. A useful compilation for academicians, researchers, and practitioners, this Premier Reference Source contains relevant references and the latest studies emerging out of the wireless sensor network field.

Download or read book Security and Robustness of Localization Techniques for Emergency Sensor Networks written by Murtuza Shabbir Jadliwala and published by . This book was released on 2008 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent advancement in radio and processor technology has seen the rise of Wireless Sensor Networks (WSN) as a reliable and cost-effective tool for real-time information gathering and analysis tasks during emergency scenarios like natural disasters, terrorist attacks, military conflicts, etc. Post-deployment localization is extremely important and necessary in these applications. But, current distributed localization approaches are not designed for such highly hostile and dynamic network conditions. This dissertation studies the adverse effects of factors like cheating behavior, node disablement and measurement inconsistencies on the corresponding localization protocols and attempts to provide simple and efficient solutions in order to overcome these problems. The first problem addressed in this dissertation is, how to perform efficient distance-based localization in the presence of cheating beacon nodes? This dissertation attempts to answer two fundamental questions in distance-based localization: (i) In the presence of cheating beacons, what are the necessary and sufficient conditions to guarantee a bounded localization error? and (ii) Under these conditions, what class of algorithms can provide that error bound? In this part of the dissertation, it is shown that when the number of cheating beacons is greater than or equal to some threshold, there is no localization algorithm that can guarantee a bounded error. Furthermore, it is also proved that when the number of malicious beacons is below that threshold, a non-empty class of bounded error localization algorithms can be identified. Two secure distance-based localization algorithms are outlined and their performance is verified using simulation experiments. The next part of the dissertation underscores the lack of fault-tolerance in existing localization protocols and proposes simple mechanisms to overcome this problem. Sensor node disablement adversely affects the overall node deployment distribution and the efficiency of localization techniques that depend on this distribution, for example, signature-based techniques. In order to improve the fault-tolerance in these schemes, it is important to first construct a probabilistic model for node disablement. In this direction, the phenomenon of sensor node disablement is modeled as a stochastic time process. A novel deployment strategy that non-uniformly deploys sensor nodes over the monitored area is also outlined. Then, a fault-tolerance related improvement to existing localization schemes is proposed, which discards observations from unhealthy groups of nodes during the localization process. In order to overcome the complexity concerns, a simple signature-based technique, called ASFALT, is also proposed. ASFALT estimates the target location by first predicting distances to known location references using the underlying node distribution and a simple averaging argument. Extensive measurements from simulation experiments verify the fault-tolerance and performance of the proposed solutions. In the final part of this dissertation, the problem of efficiently mitigating inconsistencies in location-based applications is addressed. Inconsistencies in location information, caused by cheating behavior or measurement errors can be modeled using a weighted, undirected graph and a cheating location function that can assign incorrect locations to the nodes or a cheating (but verifiable) distance function that can assign inconsistent distances to edges. In either case, an edge relation where the assigned edge distance is not within some very small factor of the Euclidean distance between the connecting nodes represents some inconsistency and is referred to as an inconsistent edge. The problem of efficiently mitigating location inconsistencies in the network can then be formulated as an optimization problem that determines the largest induced subgraph (obtained by eliminating a subset of vertices) containing only consistent edges. Two optimization problems can be stated. The first maximizes the number of vertices in the consistent subgraph, while the second maximizes the number of consistent edges in the consistent subgraph. Combinatorial properties including hardness and approximation ratio for these problems are studied and intelligent solution strategies are proposed. A comparative analysis that verifies the practical efficiency of these algorithms by using measurements from simulation experiments is also presented.

Download or read book Computer And Network Technology Proceedings Of The International Conference On Iccnt 2009 written by Venkatesh Mahadevan and published by World Scientific. This book was released on 2009-07-16 with total page 375 pages. Available in PDF, EPUB and Kindle. Book excerpt: ICCNT is the main annual computer and network research conference in Chennai that presents cutting edge research work. It will act as a platform for scientists, scholars, engineers and students from universities all around the world to present ongoing research and hence foster better research relations between universities and the computer and networking industry.

Download or read book Localization in Wireless Sensor Networks written by Mark Terwilliger (Computer scientist) and published by . This book was released on 2006 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the proliferation of wireless sensor networks, providing location-aware technology and services to new applications have become important for developers. Localization is the problem of determining the positions of nodes in an ad hoc network. With the constrained resources of network sensors, providing robust localization services remains a fundamental research challenge facing the entire sensor network development community. The initial localization problem that we addressed was to design and develop a working system that could locate equipment, such as a laptop or video projector. Ferret, the localization system developed, uses two different ranging techniques to help locate an object to within one meter. Our next goal was to identify the locations of all nodes in a sensor network given the locations of a small subset of nodes. The system we developed, LESS or Localization using Evolution Strategies in Sensomets, provides substantial energy savings over existing techniques while providing comparable accuracy. We then introduce an efficient location discovery algorithm that bounds the localization error. Our algorithm, based on finding the smallest circle enclosing the intersection of n disks, runs in O(n ) time. We extend our work to the problem of finding the smallest disk that includes the set of points common to n disks and excluded from the interiors of m other disks. Many localization techniques say that a node can either be localized or it cannot. We present a location discovery algorithm that provides, for every node in the network, a position estimate, as well as an associated error bound and confidence level. We provide a versatile framework that allows users to perform localization queries based on the required accuracy and certainty. Ensuring coverage of a wireless sensor network is critical in many applications. Most schemes that analyze and implement coverage assume that sensor locations are known. For large sensor networks, errors occur when estimating node positions. Based on the errors that arise from the localization process, we present coverage algorithms that associate a confidence level with the coverage. We introduce a system that handles user coverage queries based on the coverage and certainty a situation requires.

Download or read book Geolocation Techniques written by Camillo Gentile and published by Springer Science & Business Media. This book was released on 2012-11-11 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Basics of Distributed and Cooperative Radio and Non-Radio Based Geolocation provides a detailed overview of geolocation technologies. The book covers the basic principles of geolocation, including ranging techniques to localization technologies, fingerprinting and localization in wireless sensor networks. This book also examines the latest algorithms and techniques such as Kalman Filtering, Gauss-Newton Filtering and Particle Filtering.

Download or read book Mobile Entity Localization and Tracking in GPS less Environnments written by Richard Fuller and published by Springer Science & Business Media. This book was released on 2009-09-11 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the second International Workshop on Mobile Entity Localization and Tracking in GPS-less Environnments, MELT, held in Orlando, Florida, USA, in September 2009 in conjunction with the 11th International Conference on Ubiquitous Computing (Ubicomp 2009). MELT is a forum for the state-of-the-art technologies in mobile localization and tracking and novel applications of location-based services. The research contributions in these proceedings cover significant aspects of localization and tracking of mobile devices that include techniques suitable for smart phones and mobile sensor networks in both outdoor and indoor environments using diverse sensors and radio signals. Novel theoretical methods, algorithmic design and analysis, application development, and experimental studies are presented in 14 papers that were reviewed carefully by the program committee. In addition, three invited papers, with topics on location determination using RF systems, Cramer-Rao-Bound analysis for indoor localization and approaches targeting mobile sensor networks, are also included in the proceedings.

Download or read book Wireless Sensor Networks written by Rastko R. Selmic and published by Springer. This book was released on 2016-11-02 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a comprehensive overview of wireless sensor networks (WSNs) with an emphasis on security, coverage, and localization. It offers a structural treatment of WSN building blocks including hardware and protocol architectures and also provides a systems-level view of how WSNs operate. These building blocks will allow readers to program specialized applications and conduct research in advanced topics. A brief introductory chapter covers common applications and communication protocols for WSNs. Next, the authors review basic mathematical models such as Voroni diagrams and Delaunay triangulations. Sensor principles, hardware structure, and medium access protocols are examined. Security challenges ranging from defense strategies to network robustness are explored, along with quality of service measures. Finally, this book discusses recent developments and future directions in WSN platforms. Each chapter concludes with classroom-tested exercises that reinforce key concepts. This book is suitable for researchers and for practitioners in industry. Advanced-level students in electrical engineering and computer science will also find the content helpful as a textbook or reference.

Download or read book Location Localization and Localizability written by Yunhao Liu and published by Springer Science & Business Media. This book was released on 2010-11-01 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reflects up-to-date research, fundamental theories, and key techniques of of wireless localization technology and error-controlling techniques. It also presents and discusses the issue of localizability, as well as privacy issues associated with LBS. This book encompasses the significant and quickly growing area of wireless localization technology. It presents comprehensive and up-to-date research in both fundamental theories and key techniques of network localization. In addition to localization approaches, it also is the first book to address the issue of localizability. The privacy issue of LBS technology is also discussed.

Download or read book Time Bounded Localization in Mobile Wireless Sensor Network written by Mona Nasseri and published by . This book was released on 2015 with total page 101 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a Wireless Sensor Network (WSN), localization in a pre-determined time bound can be a reliable technique to keep communication secured and avoid spoofing. Moreover, for Mobile Wireless Sensor Network (MWSN), where sensors repeatedly move away, estimation of the optimum time to trigger re-localization to calculate the accurate sensor location is essential. However, triggering re-localization at pre-defined time interval without proper consideration of the dynamic movement of sensors is insubstantial and results in a poor resource management. Based on the recently proposed two phase Time Bounded Essential Localization (TBEL) method, where localization is processed in Essential and Global phases, we initially modified it into simpler and more efficient Time Bounded Localization Algorithm (TBL) in which the Essential phase of TBEL is ignored due to the existence of the anchors with known locations mainly for network of static nodes. Towards practical application of the TBL for MWSN, Modified-TBL (MTBL) algorithm is newly proposed in this work, which is efficient to calculate the optimum time to re-trigger the re-localization procedure. The proposed MTBL algorithm calculates the optimum re-triggering time across the entire network and local islands, in two phases; Local and Global Relocalization. In the first phase, clustering method is used to estimate the local re-localization time. Then the evaluated local results are exploited to decide the optimum global re-localization timing in the second phase. For this calculation, multiple patterns of node mobility are investigated and a probabilistic model of the random waypoint (RWP) is selected, and utilized to validate the soundness of the proposed algorithm. Additionally, its accuracy is checked by Cramer Rao Lower Bound (CRLB). By the results of analysis and simulation, a great reduction of location estimation error can be achieved up to 32% for the selected RWP model. To check the aspects of practical implementation, this study also evaluates the performance of TBL on the Cooja simulation platform as it enables not only the simulation of TBL, but the eventual implementation of this algorithm on real world motes. Also the power consumption values for different operation modes are gained that will be used for further investigations. The simulation results show that, in a limited four rounds of communication, 76.67% of nodes would be localized with an average localization error of 0.5 meters in a 200 m × 200 m simulation area including 30 blind nodes and 50 anchors. As the byproduct of the proposed MTBL, an energy and time efficient algorithm is proposed to determine the optimum number of localized nodes that collaborate in the re-localization process using MTBL. In order to perform re-localization, a server node activates the optimal number of localized nodes in each island/cluster. In this regard, a Markov Decision Process (MDP) based algorithm is proposed to find the optimal policy to select those nodes in better condition to cooperate in the re-localization process. The corresponding simulation results show that the proposed MDP algorithm effectively decreases the energy consumption in the WSN between 0.6% and 32%. Furthermore, to decrease the energy consumption and the number of re-transmissions, a Time Bounded Cluster based Localization (TBCL) method is proposed in which localization is performed in distinguishing clusters, and the information is delivered to the Base Station via Clusters Heads. For clustering purpose, a method of Modified-Low Energy Adaptive Clustering Hierarchy (MLEACH) is applied, for power saving and reducing the number of transmissions. In the proposed method, the network is divided into several clusters which are considered as a Local Coordinate systems (LCS) with a Cluster Head (CH) acting as a Relay Node (RN), that encodes and forwards the received packets to the Base Station (BS). Simulation results show the considerable reduction in the number of transmissions and energy consumption comparing with a TBEL case.

Download or read book Mission Oriented Sensor Networks and Systems Art and Science written by Habib M. Ammari and published by Springer Nature. This book was released on 2019-09-18 with total page 820 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses topics in mission-oriented sensor networks and systems research and practice, enabling readers to understand the major technical and application challenges of these networks, with respect to their architectures, protocols, algorithms, and application design. It also presents novel theoretical and practical ideas, which have led to the development of solid foundations for the design, analysis, and implementation of energy-efficient, reliable, and secure mission-oriented sensor network applications. Covering various topics, including sensor node architecture, sensor deployment, mobile coverage, mission assignment, detection, localization, tracking, data dissemination, data fusion, topology control, geometric routing, location privacy, secure communication, and cryptograph, it is a valuable resource for computer scientists, researchers, and practitioners in academia and industry.

Download or read book Ad Hoc Mobile and Wireless Networks written by Ioanis Nikolaidis and published by Springer Science & Business Media. This book was released on 2010-07-13 with total page 229 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 9th International Conference on Ad-Hoc, Mobile, and Wireless Networks, ADHOC-NOW 2010, held in Edmonton, Canada, in August 2010. The 16 revised full papers were carefully reviewed and selected from 43 submissions. The accepted papers cover topics in routing/broadcasting/multicasting protocols; energy efficiency; sensor coverage; scheduling algorithms; localization; mobility modeling; data collection and processing; and vehicular networks.

Download or read book Efficient Range Free Monte Carlo Localization for Mobile Wireless Sensor Networks written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A major problem of localization algorithms for Wireless Sensor Networks (WSNs) is the dependence on anchor information. In mobile networks, single node or even whole parts of the network might be temporarily isolated from all anchors, which will render further localization impossible. Consequently, the localization error increases drastically in these situations. In addition to that, network operators have a strong interest in reducing the number of costly anchor nodes to reduce deployment and operation costs, which further amplifies the problem of missing anchorinformation. This thesis fir...

Download or read book Underwater Acoustic Sensor Networks written by Yang Xiao and published by CRC Press. This book was released on 2010-05-19 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: A detailed review of underwater channel characteristics, Underwater Acoustic Sensor Networks investigates the fundamental aspects of underwater communication. Prominent researchers from around the world consider contemporary challenges in the development of underwater acoustic sensor networks (UW-ASNs) and introduce a cross-layer approach for effec

Download or read book Localization in Wireless Networks written by Jessica Feng Sanford and published by Springer Science & Business Media. This book was released on 2012-05-03 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a computational tour-de-force, this volume wipes away a host of problems related to location discovery in wireless ad-hoc sensor networks. WASNs have recognized potential in many applications that are location-dependent, yet are heavily constrained by factors such as cost and energy consumption. Their “ad-hoc” nature, with direct rather than mediated connections between a network of wireless devices, adds another layer of difficulty. Basing this work entirely on data-driven, coordinated algorithms, the author’s aim is to present location discovery techniques that are highly accurate—and which fit user criteria. The research deploys nonparametric statistical methods and relies on the concept of joint probability to construct error (including location error) models and environmental field models. It also addresses system issues such as the broadcast and scheduling of the beacon. Reporting an impressive accuracy gain of almost 17 percent, and organized in a clear, sequential manner, this book represents a stride forward in wireless localization.

Download or read book Wireless Sensor Networks and Applications written by Yingshu Li and published by Springer Science & Business Media. This book was released on 2008-02-10 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: A crucial reference tool for the increasing number of scientists who depend upon sensor networks in a widening variety of ways. Coverage includes network design and modeling, network management, data management, security and applications. The topic covered in each chapter receives expository as well as scholarly treatment, covering its history, reviewing state-of-the-art thinking relative to the topic, and discussing currently unsolved problems of special interest.