Download or read book Machine Learning Based Delay Tolerant Protocols for Underwater Acoustic Wireless Sensor Networks written by Lin Zou and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: [Truncated abstract] In recent years, the developments of underwater acoustic wireless sensor networks (UA-WSNs) have attracted considerable research interest due to their capabilities to support underwater missions. Underwater acoustic communication channels are featured with large attenuation, long propagation delay and constrained bandwidth, which limit communications between sensors and make the system intermittent. As a result, delay tolerance is one of the major design concerns for supporting UA-WSNs to carry out tasks in harsh subsea environments. Although a number of delay tolerant schemes have been proposed for terrestrial wireless sensor networks, the fundamental differences between underwater acoustic channels and radio frequency channels make those schemes perform poorly in subsea environments. Therefore, it is desirable to develop a feasible, reliable and robust protocol for high-speed underwater acoustic wireless communications. In this dissertation, we present a family of delay tolerant protocols for UA-WSNs, which employ reinforcement learning algorithms.

Download or read book Reinforcement Learning Based Energy Efficient Routing Protocols for Underwater Acoustic Wireless Sensor Networks written by Lu Jin and published by . This book was released on 2012 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt: [Truncated abstract] The unique properties of underwater acoustic communications, such as large and time-varying propagation delay, low and range dependent channel bandwidth, and adverse operating environments, challenge the design of an energy efficient protocol in underwater acoustic wireless sensor networks (UA-WSNs). In this dissertation, we present a family of reinforcement learning based energy-efficient protocols for UA-WSNs so that the systems are "self-adaptive" or "self-optimized" to the environment after having been deployed. We show that, due to the limited bandwidth in underwater acoustic communication channels, the energy consumption caused by collisions and retransmissions is much higher than that of its terrestrial counterparts. Therefore, the key issue of extending the lifetime of underwater sensor networks is to reduce the collisions and retransmissions. To address this issue in a single underwater acoustic channel, we model the UA-WSNs as single agent reinforcement learning systems and design an routing protocol to aid transmitters to determine the most energy efficient relay nodes. In the design of the reward function, we use the transmission power level, the neighborhood interference, and the feasible bandwidth as the main parameters for the selection of relay nodes. Extensive simulation results demonstrate that the proposed protocol achieves a remarkable energy efficiency in comparison with the Ad hoc On-Demand Distance Vector (AODV) routing protocol. For verifying the feasibility of the reinforcement learning based energy efficient protocol in multiple underwater acoustic communication channels, we improve the protocol by including the channel-related factors in the design of the reward function. In the proposed UA-WSN system, the feasible acoustic spectrum is divided into a number of sub-channels which suffer diverse and frequency dependant attenuation and noise interference. The proposed protocol helps each transmitter to determine not only an optimal relay node, but also an optimal propagation sub-channel to the optimal relay node. For the reward function of the proposed protocol, the channel-related factors are used to evaluate the quality of the sub-channels in terms of noise and attenuation level, probability of collisions, etc.. Simulation results show that the use of a multiple-channel reinforcement learning protocol manifests far better energy efficiency than a single-channel reinforcement learning protocol. But the use of a large number of sub-channels leads to performance degradation due to the extremely narrow bandwidth and low capacity of sub-channels.

Download or read book Advances in Delay Tolerant Networks DTNs written by Joel J.P.C. Rodrigues and published by Woodhead Publishing. This book was released on 2020-11-20 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Delay-Tolerant Networks: Architecture and Enhanced Performance, Second Edition provides an important overview of delay-tolerant networks (DTNs) for researchers in electronics, computer engineering, telecommunications and networking for those in academia and R&D in industrial sectors. Part I reviews the technology involved and the prospects for improving performance, including different types of DTN and their applications, such as satellite and deep-space communications and vehicular communications. Part II focuses on how the technology can be further improved, addressing topics, such as data bundling, opportunistic routing, reliable data streaming, and the potential for rapid selection and dissemination of urgent messages. Opportunistic, delay-tolerant networks address the problem of intermittent connectivity in a network where there are long delays between sending and receiving messages, or there are periods of disconnection. - Reviews the different types of DTN and shows how they can be applied in satellite and deep-space communications, vehicular communications (including unmanned aerial), and during large-scale disasters - Considers security concerns for DTN and potential for rapid selection and dissemination of urgent messages - Reviews the breadth of areas in which DTN is already providing solutions - Covers the prospects for DTN's wider adoption and development of standards

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 Cognitive Underwater Acoustic Networking Techniques written by Dimitri Sotnik and published by Springer Nature. This book was released on 2020-09-29 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book summarizes the latest research on cognitive network-layer methods and smart adaptive physical-layer methods in underwater networks. Underwater communication requires extendable and delay-tolerant underwater acoustic networks capable of supporting multiple frequency bands, data rates and transmission ranges. The book also discusses a suitable foreground communication stack for mixed mobile/static networks, a technology that requires adaptive physical layer waveforms and cognitive network strategies with underlying cooperative and non-cooperative robust processes. The goal is to arrive at a universally applicable standard in the area of Underwater Internet-of-Things [ISO/IEC 30140, 30142, 30143]. The book is the second spin-off of the research project RACUN, after the first RACUN-book "Underwater Acoustic Networking Techniques" (https://link.springer.com/book/10.1007%2F978-3-642-25224-2)

Download or read book Energy Efficient Underwater Wireless Communications and Networking written by Goyal, Nitin and published by IGI Global. This book was released on 2020-09-04 with total page 339 pages. Available in PDF, EPUB and Kindle. Book excerpt: Underwater wireless sensor networks (UWSN) are envisioned as an aquatic medium for a variety of applications including oceanographic data collection, disaster management or prevention, assisted navigation, attack protection, and pollution monitoring. Similar to terrestrial wireless sensor networks (WSN), UWSNs consist of sensor nodes that collect the information and pass it to a base station; however, researchers have to face many challenges in executing the network in an aquatic medium. Energy-Efficient Underwater Wireless Communications and Networking is a crucial reference source that covers existing and future possibilities of the area as well as the current challenges presented in the implementation of underwater sensor networks. While highlighting topics such as digital signal processing, underwater localization, and acoustic channel modeling, this publication is ideally designed for machine learning experts, IT specialists, government agencies, oceanic engineers, communication experts, researchers, academicians, students, and environmental agencies concerned with optimized data flow in communication network, securing assets, and mitigating security attacks.

Download or read book Trends in Cloud based IoT written by Fadi Al-Turjman and published by Springer Nature. This book was released on 2020-06-01 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book examines research topics in IoT and Cloud and Fog computing. The contributors address major issues and challenges in IoT-based solutions proposed for the Cloud. The authors discuss Cloud smart and energy efficient services in applications such as healthcare, traffic, and farming systems. Targeted readers are from varying disciplines who are interested in designing and deploying the Cloud applications. The book can be helpful to Cloud-based IoT service providers, Cloud-based IoT service consumers, and Cloud service developers in general for getting the state-of-the-art knowledge in the emerging IoT area. The book also provides a strong foundation for researchers to advance further in this domain. Presents a variety of research related to IoT and Cloud computing; Provides the industry with new and innovative operational ideas; Pertinent to academics, researchers, and practitioners around the world.

Download or read book Machine Learning Modeling for IoUT Networks written by Ahmad A. Aziz El-Banna and published by Springer Nature. This book was released on 2021-05-29 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses how machine learning and the Internet of Things (IoT) are playing a part in smart control of underwater environments, known as Internet of Underwater Things (IoUT). The authors first present seawater’s key physical variables and go on to discuss opportunistic transmission, localization and positioning, machine learning modeling for underwater communication, and ongoing challenges in the field. In addition, the authors present applications of machine learning techniques for opportunistic communication and underwater localization. They also discuss the current challenges of machine learning modeling of underwater communication from two communication engineering and data science perspectives.

Download or read book Underwater Acoustic Networking Techniques written by Roald Otnes and published by Springer Science & Business Media. This book was released on 2012-01-19 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: This literature study presents an overview of underwater acoustic networking. It provides a background and describes the state of the art of all networking facets that are relevant for underwater applications. This report serves both as an introduction to the subject and as a summary of existing protocols, providing support and inspiration for the development of network architectures.

Download or read book The Underwater World for Digital Data Transmission written by Parikshit N. Mahalle and published by Springer Nature. This book was released on 2021-05-06 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers all small details about Underwater Sensor Networks (UWSN). Researchers can use this book as a prerequisite before starting any research on underwater networks or underwater applications. This book covers the introduction, challenges, different architectural models for UWSN, various attacks on UWSN, underwater applications, and networking layers. The target audience includes professors and students in engineering, and researchers and engineers working on marine applications. In academic level, the book is helpful for students having Networking and Information Security as elective subject and doing projects in Wireless Networks. It is also helpful for spostgraduates and Ph.D. researchers to learn basics of Underwater Sensor Networks.

Download or read book Sensors Measurement and Intelligent Materials written by Yun Hae Kim and published by Trans Tech Publications Ltd. This book was released on 2013-02-13 with total page 3310 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume is indexed by Thomson Reuters CPCI-S (WoS). The papers of this 4 volumes set on "Sensors, Measurement and Intelligent Materials" are grouped as follows: Chapter 1: Intelligent Materials and Structures; Chapter 2: Sensors; Chapter 3: Techniques for Measurement, Detection and Monitoring; Chapter 4: Data Acquisition, Data Mining and Data Processing; Chapter 5: Automation and Control. Technologies and Engineering; Chapter 6: Intelligent System; Chapter 7: Mechatronics; Chapter 8: Microelectronics, Electronics and Electrical. Circuits and Devices; Chapter 9: Network Engineering and Communication Technology; Chapter 10: Applied Computing and Information Technologies; Chapter 11: Materials and Processing Technologies; Chapter 12: Applied Mechanics in General Mechanical Engineering and Construction.

Download or read book Reinforcement Learning Based Medium Access Control for Underwater Acoustic Sensor Networks written by Sung Hyun Park and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Smart Innovation of Web of Things written by Aarti Jain and published by CRC Press. This book was released on 2020-06-02 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Web of Things (WoT) is a concept that describes approaches, programming tools and software architectural systems, which interface networks of real-world objects with the World Wide Web. The book is organized into 11 chapters, each focusing on a unique wireless technological aspect of the Web of Things, and it aims to comprehensively cover each of its various applications, including: A strong emphasis on WoT problems and solutions, identifying the main open issues, innovations and latest technologies behind WoT A blend of theoretical and simulation-based problems for better understanding of the concepts behind WoT Various exemplifying applications in which the use of WoT is very attractive and an inspiration for future applications The book will be useful to researchers, software developers and undergraduate and postgraduate students, as well as practitioners.

Download or read book Reliable Data Delivery Protocols for Underwater Sensor Networks written by Nusrat Nowsheen and published by . This book was released on 2015 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: Underwater Acoustic Sensor Networks (UASNs) are becoming increasingly promising to monitor aquatic environment. The network is formed by deploying a number of sensor nodes and/or Autonomous Underwater Vehicles (AUVs) to support diverse applications such as pollution monitoring, oceanographic data collection, disaster recovery and surveillance. These applications require transmission of data packets from the source to a sink or gateway in a multihop fashion and eventually to a message ferry or an onshore station. In such a network, reliable data delivery becomes challenging as delivery is hindered due to long propagation delay and high error-rate of underwater acoustic channel, limited energy and inherent mobility of sensor nodes. Existing data delivery protocols have certain limitations such as predefined communication architecture, dependency on periodic communication with neighbors or flooding-based data forwarding. These restrict their capabilities to achieve reliable delivery in many application scenarios. They mainly consider location, depth and energy information of sensor nodes to improve energy efficiency of underwater networks. However, to improve reliability, protocols should consider factors such as link quality, node movement, packet delay and traffic flow so that they can deal with the disruptive nature of the communication link, and harsh and dynamic context of the network.In this thesis, we focus on developing data delivery protocols to provide reliable data transfer for various underwater applications and network scenarios considering underwater communication characteristics that have direct impact on reliable data transfer. In the first protocol, an anchor-based architecture is considered to support underwater monitoring applications and mobile message ferry nodes are used to collect stored data from one or more nodes, called gateways. A strategy for gateway selection is devised to maximize their lifetime. Data delivery reliability is significantly improved by selecting the next hop forwarder on-the-fly based on its link reliability and reachability to gateways through probabilistic estimation. Data forwarding solution is coupled with delay tolerant networking paradigm by accumulating data packets for a fixed amount of "hold time" to improve delivery and reduce communication overhead simultaneously. Besides high error probability and dynamic nature of underwater acoustic channel, node movement also makes data forwarding process difficult. Moreover, consideration of network condition in the calculation of "hold time" captures more recent network status. The first protocol is therefore further extended by (i) estimating/predicting node movement pattern and using it to determine neighbors' coverage probability, and (ii) calculating data "hold time" dynamically at each node. Consideration of the above factors increases the reliability of data forwarding solution. The above protocols have been designed to improve reliability of data transfer for underwater monitoring applications. However, in many situations like disaster management and emergency rescue operations in ocean, deployment of an ad hoc network consisting of AUVs is of paramount importance to support mission critical applications. To accomplish this, an effective data delivery protocol has been devised which ensures reliability by delivering data within a given deadline to the onshore station using a set of AUVs. A modified Breadth-First Search (BFS) technique has been employed to find a path towards an AUV that meets the data delivery deadline as per a given surfacing schedule. A command-based node movement technique has been incorporated to ensure delivery in an energy efficient manner. The proposed data delivery protocols have been evaluated and compared with existing relevant and contemporary underwater protocols. Simulation results show that the proposed protocols achieve performance improvement over competing protocols in terms of successful packet delivery, communication overhead and energy.

Download or read book Routing Protocols for Underwater Acoustic Sensor Networks A Survey from an Application Perspective written by Qian Lu and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Underwater acoustic communications are different from terrestrial radio communications; acoustic channel is asymmetric and has large and variable end-to-end propagation delays, distance-dependent limited bandwidth, high bit error rates, and multi-path fading. Besides, nodes' mobility and limited battery power also cause problems for networking protocol design. Among them, routing in underwater acoustic networks is a challenging task, and many protocols have been proposed. In this chapter, we first classify the routing protocols according to application scenarios, which are classified according to the number of sinks that an underwater acoustic sensor network (UASN) may use, namely single-sink, multi-sink, and no-sink. We review some typical routing strategies proposed for these application scenarios, such as cross-layer and reinforcement learning as well as opportunistic routing. Finally, some remaining key issues are highlighted.

Download or read book Wireless Sensor Networks written by Kazem Sohraby and published by John Wiley & Sons. This book was released on 2007-04-06 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Efficient Communication Protocols for Underwater Acoustic Sensor Networks written by Dario Pompili and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Underwater sensor networks find applications in oceanographic data collection, pollution monitoring, offshore exploration, disaster prevention, assisted navigation, tactical surveillance, and mine reconnaissance. The enabling technology for these applications is acoustic wireless networking. UnderWater Acoustic Sensor Networks (UW-ASNs) consist of sensors and Autonomous Underwater Vehicles (AUVs) deployed to perform collaborative monitoring tasks. The objective of this research is to explore fundamental key aspects of underwater acoustic communications, propose communication architectures for UW-ASNs, and develop efficient sensor communication protocols tailored for the underwater environment. Specifically, different deployment strategies for UW-ASNs are studied, and statistical deployment analysis for different architectures is provided. Moreover, a model characterizing the underwater acoustic channel utilization efficiency is introduced. The model allows setting the optimal packet size for underwater communications. Two distributed routing algorithms are proposed for delay-insensitive and delay-sensitive applications. The proposed routing solutions allow each node to select its next hop, with the objective of minimizing the energy consumption taking the different application requirements into account. In addition, a resilient routing solution to guarantee survivability of the network to node and link failures in long-term monitoring missions is developed. Moreover, a distributed Medium Access Control (MAC) protocol for UW-ASNs is proposed. It is a transmitter-based code division multiple access scheme that incorporates a novel closed-loop distributed algorithm to set the optimal transmit power and code length. It aims at achieving high network throughput, low channel access delay, and low energy consumption. Finally, an efficient cross-layer communication solution tailored for multimedia traffic (i.e., video and audio streams, still images, and scalar sensor data) is introduced.