Results 21 to 30 of about 33,601 (184)

APE-Sync: An Adaptive Power Efficient Time Synchronization for Mobile Underwater Sensor Networks

open access: yesIEEE Access, 2019
Time synchronization is a cooperative work's foundation among underwater sensor networks' nodes; it takes a crucial role in the application and the study of underwater sensor networks.
Feng Zhou   +5 more
doaj   +1 more source

Constructing 3D Underwater Sensor Networks without Sensing Holes Utilizing Heterogeneous Underwater Robots

open access: yesApplied Sciences, 2021
This article handles building underwater sensor networks autonomously using multiple surface ships. For building underwater sensor networks in 3D workspace with many obstacles, this article considers surface ships dropping underwater robots into the ...
Jonghoek Kim
doaj   +1 more source

UWSNs positioning technology based on iterative optimization and data position correction

open access: yesEURASIP Journal on Wireless Communications and Networking, 2020
Underwater wireless sensor networks (UWSNs) have played an increasingly important role in the fields of ocean exploration, underwater environment monitoring, underwater navigation target tracking, terrain-assisted navigation, and so on.
Xinxin Wang   +4 more
doaj   +1 more source

Reinforcement Learning-Based Routing Protocol for Underwater Wireless Sensor Networks: A Comparative Survey

open access: yesIEEE Access, 2021
Underwater wireless sensor networks (UWSNs) have emerged as a promising networking technology owing to their various underwater applications. Many applications require sensed data to be routed to a centralized location.
Rehenuma Tasnim Rodoshi   +2 more
doaj   +1 more source

AMCTD: Adaptive Mobility of Courier nodes in Threshold-optimized DBR Protocol for Underwater Wireless Sensor Networks [PDF]

open access: yes, 2013
In dense underwater sensor networks (UWSN), the major confronts are high error probability, incessant variation in topology of sensor nodes, and much energy consumption for data transmission.
Ahmad, Z.   +4 more
core   +1 more source

Reinforcement Learning-Based Data Forwarding in Underwater Wireless Sensor Networks with Passive Mobility

open access: yesSensors, 2019
Data forwarding for underwater wireless sensor networks has drawn large attention in the past decade. Due to the harsh underwater environments for communication, a major challenge of Underwater Wireless Sensor Networks (UWSNs) is the timeliness ...
Haotian Chang, Jing Feng, Chaofan Duan
doaj   +1 more source

Hierarchical underwater acoustic sensor networks [PDF]

open access: yesProceedings of the Fifth ACM International Workshop on UnderWater Networks - WUWNet '10, 2010
We propose a hierarchical underwater acoustic sensor network architecture in which the sensors and the collector stations operate in distinct layers. The hierarchical architecture is motivated by the property of the acoustic underwater transmission medium that for each transmission distance there exists an operating frequency for which the narrowband ...
Andrej Stefanov, Milica Stojanovic
openaire   +1 more source

3D Underwater Sensor Network Localization [PDF]

open access: yesIEEE Transactions on Mobile Computing, 2009
We transform the 3D underwater sensor network (USN) localization problem into its 2D counterpart by employing sensor depth information and a simple projection technique. We first prove that a nondegenerative projection preserves network localizability.
Amin Y. Teymorian   +5 more
openaire   +1 more source

A better-performing Q-learning game-theoretic distributed routing for underwater wireless sensor networks

open access: yesInternational Journal of Distributed Sensor Networks, 2018
Underwater sensor networks have recently emerged as a promising networking technique for various underwater applications. However, the acoustic routing of underwater sensor networks in the aquatic environment presents challenges in terms of dynamic ...
Sungwook Kim
doaj   +1 more source

Design of underwater acoustic sensor communication systems based on software-defined networks in big data

open access: yesInternational Journal of Distributed Sensor Networks, 2017
The application based on big data is an important development trend of underwater acoustic sensor networks. However, traditional underwater acoustic sensor networks rely on the hardware infrastructure.
Jianping Wang, Lijuan Ma, Wei Chen
doaj   +1 more source

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