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 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 Advanced Computer Science and Information Technology written by Tai-hoon Kim and published by Springer Science & Business Media. This book was released on 2011-09-09 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume constitutes the refereed proceedings of the Third International Conference on Advanced Science and Technology, AST 2011, held in Seoul, South Korea, in September 2011. The 37 revised full papers presented in this volume were carefully reviewed and selected from numerous submissions. The papers feature ideas, problems and solutions relating to the multifaceted aspects of the Advanced Science and Technology, such as communication and networking; ubiquitous multimedia computing; security technology and information assurance; computer science, software engineering and applications thereof; bio-science and bio-technology; u- and e-service, science and technology; database theory and application; control and automation; signal processing, image processing and pattern recognition; as well as grid and distributed computing.

Download or read book Energy Efficient Underwater Acoustic Sensor Networks written by Chaima Zidi and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: UnderWaterAcoustic Sensor Networks (UW-ASNs) are the newest technological achievement in terms of communication. Composed of a set of communicating underwater sensors, UW-ASNs are intended to observe and explore lakes, rivers, seas and oceans. Recently, they have been subject to a special attention due to their great potential in terms of promising applications in various domains (military, environmental, scientific...) and to the new scientific issues they raise. A great challenging issue in UW-ASNs is the fast energy depletion since high power is needed for acoustic communication while sensors battery budget is limited. Hence, energy-efficient networking protocols are of a paramount importance to make judicious use of the available energy budget while considering the distinguishing underwater environment characteristics. In this context, this thesis aims at studying the main challenging underwater acoustic sensors characteristics to design energy-efficient communication protocols specifically at the routing and MAC layers. First, we address the problem of energy holes in UW-ASNs. The sink-hole problem occurs when the closest nodes to sink drain their energy faster due to their heavier load. Indeed, those sensors especially the ones that are 1-hop away from the static sink act as relays to it on behalf of all other sensors, thus suffering from severe energy depletion. In particular, at the routing layer, we propose to distribute the transmission load at each sensor among several potential neighbors, assuming that sensors can adjust their communication range among two levels when they send or forward data. Specifically, we determine for each sensor the set of next hops with the associated load weights that lead to a fair energy depletion among all sensors in the network. Then, we extend our balanced routing strategy by assuming that each sensor node is not only able to adjust its transmission power to 2 levels but eventually up to n levels where n > 2. Consequently, at the routing layer, for each possible value of n, we determine for each sensor the set of possible next hops with the associated load weights that lead to a fair energy consumption among all sensors in the network. Moreover, we derive the optimal number of transmission powers n that balances the energy consumption among all sensors for each network configuration. In addition to that, it is worth pointing out that our extended routing protocol uses a more realistic time varying channel model that takes into account most of the fundamental characteristics of the underwater acoustic propagation. Analytical results show that further energy saving is achieved by our extended routing scheme. Second, to mitigate the dramatic collision impacts, we design a collision avoidance energy efficient multichannel MAC protocol (MC-UWMAC) for UW-ASNs. MC-UWMAC operates on single slotted control and a set of equal-bandwidth data channels. Control channel slots are dedicated to RTS/CTS handshaking allowing a communicating node pair to agree on the start time of communication on a pre-allocated data channel. In this thesis, we propose two novel coupled slot assignment and data channels allocation procedures without requiring any extra negotiation overhead. Accordingly, each node can initiate RTS/CTS exchange only at its assigned slot calculated using a slot allocation procedure based on a grid virtual partition of the deployment area. Moreover, for each communicating pair of nodes, one data channel is allocated using a channel allocation procedure based on our newly designed concept of singleton- intersecting quorum. Accordingly, each pair of communicating nodes will have at their disposal a unique 2-hop conflict free data channel. Compared with existing MAC protocol, MC-UWMAC reduces experienced collisions and improves network throughput while minimizing energy consumption.

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 Energy efficient Coordination Schemes for Underwater Acoustic Sensor Networks written by Ruoyu Su and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Underwater acoustic sensor networks (UWSNs) have attracted much research interest in recent years due to the wide range of their potential applications, such as environmental monitoring, natural resources development, and geological oceanography. While much research effort has been devoted to the improvement of acoustic signal reception and processing, the increase of throughput, and the reduction of packet delay, not really studies focus on reducing and balancing energy consumption among sensor nodes in long-term marine monitoring applications. In this dissertation, through a comprehensive understanding of underwater acoustic channels, we propose a series of solutions to achieve energy-efficient data transmission in UWSNs by considering both battery energies of sensor nodes and network connectivity. We first review different approaches to modelling the underwater acoustic channels to obtain a comprehensive understanding of the underwater acoustic communication environment. We propose an asynchronous wake-up scheme based on combinatorial designs to minimize the working duty cycle of sensor nodes for UWSNs in long-term marine monitoring applications. Network connectivity can be maintained using such a design, even with a reduced duty cycle. We conduct simulation experiments to evaluate performance of the proposed scheme. It is shown through our results that the proposed asynchronous wake-up scheme can effectively reduce the energy consumption for idle listening and can outperform other cyclic difference set (CDS)-based wake-up schemes. It is worth noting that all these are achieved without sacrificing the network connectivity among sensor nodes. We investigate the deployment strategy of UWSNs with a square grid topology to balance the network robustness and the energy consumption of sensor nodes. We propose a relay node selection scheme for such network applications. We evaluate its performance in different network sizes and using different initial battery energy to balance the network lifetime. Simulation results show that the proposed relay node selection scheme can effectively balance and prolong the network lifetime. Compared to routing algorithms solely based on the minimum hops, the performance of the proposed scheme is closer to the optimal theoretical value obtained by solving the linear programming problem. The network lifetime is further increased if sensor nodes are allowed to have different initial energy values based on their traffic load conditions. Finally, we propose an effective coordination scheme for data collection when an autonomous underwater vehicle (AUV) is used as a mobile data sink in UWSNs. We demonstrate the effectiveness of the proposed scheme when time synchronization is not available between the AUV and the sensor nodes. Based on the features available in existing acoustic modems, we introduce transmitting power control to further reduce energy consumption. Simulation results show that the proposed scheme with power control leads to lower energy consumption than without power control during underwater communication. The proposed schemes have been demonstrated to work well for underwater networks with a square grid topology. It can be also extended for other network topologies and more sophisticated modems.

Download or read book Underwater Acoustic Sensor Networks written by Peng Xie and published by . This book was released on 2007 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Reliable Communication in Underwater Acoustic Sensor Networks written by Zheng Guo and published by . This book was released on 2011 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mobile Ad Hoc Networking written by Stefano Basagni and published by John Wiley & Sons. This book was released on 2013-02-07 with total page 690 pages. Available in PDF, EPUB and Kindle. Book excerpt: "An excellent book for those who are interested in learning the current status of research and development . . . [and] who want to get a comprehensive overview of the current state-of-the-art." —E-Streams This book provides up-to-date information on research and development in the rapidly growing area of networks based on the multihop ad hoc networking paradigm. It reviews all classes of networks that have successfully adopted this paradigm, pointing out how they penetrated the mass market and sparked breakthrough research. Covering both physical issues and applications, Mobile Ad Hoc Networking: Cutting Edge Directions offers useful tools for professionals and researchers in diverse areas wishing to learn about the latest trends in sensor, actuator, and robot networking, mesh networks, delay tolerant and opportunistic networking, and vehicular networks. Chapter coverage includes: Multihop ad hoc networking Enabling technologies and standards for mobile multihop wireless networking Resource optimization in multiradio multichannel wireless mesh networks QoS in mesh networks Routing and data dissemination in opportunistic networks Task farming in crowd computing Mobility models, topology, and simulations in VANET MAC protocols for VANET Wireless sensor networks with energy harvesting nodes Robot-assisted wireless sensor networks: recent applications and future challenges Advances in underwater acoustic networking Security in wireless ad hoc networks Mobile Ad Hoc Networking will appeal to researchers, developers, and students interested in computer science, electrical engineering, and telecommunications.

Download or read book Energy Efficient Reconfigurable MAC Protocol for Underwater Acoustic Sensor Network written by Khaja Mohammad Shazzad and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Principles of Wireless Sensor Networks written by Mohammad S. Obaidat and published by Cambridge University Press. This book was released on 2014-12-04 with total page 435 pages. Available in PDF, EPUB and Kindle. Book excerpt: A concise and clear guide to the concepts and applications of wireless sensor networks, ideal for students, practitioners and researchers.

Download or read book Inventive Computation and Information Technologies written by S. Smys and published by Springer. This book was released on 2022-01-19 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a collection of best selected papers presented at the International Conference on Inventive Computation and Information Technologies (ICICIT 2021), organized during 12–13 August 2021. The book includes papers in the research area of information sciences and communication engineering. The book presents novel and innovative research results in theory, methodology and applications of communication engineering and information technologies.

Download or read book ENERGY EFFICIENT AND VOID AVOIDING ROUTING PROTOCOLS FOR UNDERWATER WIRELESS SENSOR NETWORKS written by Rogaia Mhemed and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract Underwater wireless sensor networks (UWSN) are an active area of research and development. The underwater environment is harsh; acoustic channel characteristics such as high attenuation and absorption are an important challenge for the implementation of UWSNs. Void holes in networks, where a node can receive but cannot transmit to any node other than the sender, also present a significant challenge. This dissertation is motivated by these challenges and investigates solutions for energy efficient and void avoiding routing protocols for UWSNs. A proposed greedy routing protocol called Energy Efficient Depth-Based Opportunistic Routing (EEDOR) is designed and simulated. This protocol uses a novel holding time formula that incorporates both the priority of the candidate node and the depth difference between the packet sender and each candidate node of its forwarding set. The protocol uses a simple design that allows sensor nodes to form their forwarding sets by exchanging local information only. Nodes can collect information efficiently by listening and responding to forward request and forward reply messages. Simulation results show that the proposed protocol achieves significant energy savings as compared to popular protocols, thereby also extending network lifetime significantly. A void avoiding protocol called the called Energy Efficient Depth-Based Opportunistic Routing with Void Avoidance (EEDOR-VA) is also proposed. The novelty of this technique lies in employing a hop-count to determine paths between the source node and sink(s). Trapped and void nodes are recognized and eliminated from node forwarding sets. This protocol is shown to have a high packet delivery ratio (PDR). The protocol is evaluated using two different sets of simulation settings. Finally, the impact of the number of sinks and the sink deployment method on energy conservation and PDR is investigated. Simulation results show that using a deterministic multi-sink deployment can reduce the number of request and reply messages. As a result, the network overhead is reduced, decreasing the energy usage and increasing the PDR of the network.

Download or read book Proceedings of First International Conference on Smart System Innovations and Computing written by Arun K. Somani and published by Springer. This book was released on 2018-01-08 with total page 898 pages. Available in PDF, EPUB and Kindle. Book excerpt: The edited volume contains original papers contributed to 1st International Conference on Smart System, Innovations and Computing (SSIC 2017) by researchers from different countries. The contributions focuses on two main areas, i.e. Smart Systems Innovations which includes applications for smart cities, smart grid, social computing and privacy challenges with their theory, specification, design, performance, and system building. And second Computing of Complex Solutions which includes algorithms, security solutions, communication and networking approaches. The volume provides a snapshot of current progress in related areas and a glimpse of future possibilities. This volume is useful for researchers, Ph.D. students, and professionals working in the core areas of smart systems, innovations and computing.

Download or read book NETWORKING 2008 Ad Hoc and Sensor Networks Wireless Networks Next Generation Internet written by Amitabha Das and published by Springer. This book was released on 2008-05-06 with total page 965 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 7th International IFIP-TC6 Networking Conference, NETWORKING 2008, held in Singapore, in May 2008. The 82 revised full papers were carefully reviewed and selected from numerous submissions for inclusion in the book. The papers are organized in topical sections on ad hoc and sensor networks: design and optimization, MAC protocol, overlay networking, and routing; next generation internet: authentication, modeling and performance evaluation, multicast, network measurement and testbed, optical networks, peer-to-peer and overlay networking, peer-to-peer services, QoS, routing, security, traffic engineering, and transport protocols; wireless networks: MAC performance, mesh networks, and mixed networks.

Download or read book Computational Methods and Data Engineering written by Vijendra Singh and published by Springer Nature. This book was released on 2020-11-04 with total page 559 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers selected high-quality research papers from the International Conference on Computational Methods and Data Engineering (ICMDE 2020), held at SRM University, Sonipat, Delhi-NCR, India. Focusing on cutting-edge technologies and the most dynamic areas of computational intelligence and data engineering, the respective contributions address topics including collective intelligence, intelligent transportation systems, fuzzy systems, data privacy and security, data mining, data warehousing, big data analytics, cloud computing, natural language processing, swarm intelligence, and speech processing.

Download or read book Applications of Artificial Intelligence Techniques in Engineering written by Hasmat Malik and published by Springer. This book was released on 2018-09-28 with total page 625 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book is a collection of high-quality, peer-reviewed innovative research papers from the International Conference on Signals, Machines and Automation (SIGMA 2018) held at Netaji Subhas Institute of Technology (NSIT), Delhi, India. The conference offered researchers from academic and industry the opportunity to present their original work and exchange ideas, information, techniques and applications in the field of computational intelligence, artificial intelligence and machine intelligence. The book is divided into two volumes discussing a wide variety of industrial, engineering and scientific applications of the emerging techniques.