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 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 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 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 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 Energy efficient Underwater Wireless Communications and Networking written by Nitin Goyal and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "This book covers existing and future possibilities of the area as well as the current challenges presented in the implementation of underwater sensor 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 Wireless Sensor Networks and Energy Efficiency Protocols Routing and Management written by Zaman, Noor and published by IGI Global. This book was released on 2012-01-31 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This book focuses on wireless sensor networks and their operation, covering topics including routing, energy efficiency and management"--

Download or read book Energy Efficient Underwater Acoustic Networks written by Josep Miquel Jornet Montana and published by . This book was released on 2008 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis, discrete power control is introduced as a practical means of enabling multi-hop communications for large coverage area in bandwidth-limited underwater acoustic networks. The document is divided into two parts. In the first part, the overall system performance is evaluated for different power selection schemes as well as for different frequency allocation patterns (center frequency fc and bandwidth B). In the second part of the thesis, the Focused Beam Routing protocol (FBR), a scalable routing technique based on location information, is introduced and optimized for minimum energy per bit consumption. The appendix contains an introduction to the underwater acoustic network simulator that has been developed and used to obtain all the results shown in this thesis.

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 Cluster Based Algorithm for Underwater Sensor Networks written by Kyriakos Ovaliadis and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 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 Toward Energy efficient and Reliable Underwater Wireless Sensor Networks written by Faiza Ali Al-Salti and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Energy Efficient Communication for Underwater Wireless Sensors Networks written by Ammar Babiker and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Energy Efficient Communication for Underwater Wireless Sensors Networks.

Download or read book Reliable and Efficient Data Transfer for Underwater Acoustic Networks written by Haining Mo and published by . This book was released on 2014 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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.