Results 31 to 40 of about 1,844 (153)
UA-MAC: An Underwater Acoustic Channel Access Method for Dense Mobile Underwater Sensor Networks
International Journal of Distributed Sensor Networks, 2014 The long propagation delay and low data rate characteristics of acoustic communication attach many challenges to underwater wireless sensor networks. In this paper, a TDMA based underwater acoustic channel access method (UA-MAC) is proposed mainly to ...
Chao Lv, Shuo Wang, Min Tan, Lan Chen
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Multimodal Acoustic-RF Adaptive Routing Protocols for Underwater Wireless Sensor Networks
IEEE Access, 2019 In multi-function underwater wireless sensor networks (UWSNs), multiple applications share the same physical infrastructure to fully exploit network resources. Under such scenarios, diverse packets coexist in the same network which require differentiated
Hanjiang Luo +5 more
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ORIT: A Transport Layer Protocol Design for Underwater DTN Sensor Networks
IEEE Access, 2019 Research challenges have focused on underwater acoustic sensor networks characterized by long propagation delay, narrow bandwidth, and frequently disconnected interruption, among others, which can be viewed as delay/disruption tolerant networks (DTNs ...
Yishan Su, Rong Fan, Zhigang Jin
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Further simulation testing in CoopMAC-U for underwater acoustic sensor networks
Jurnal Jaringan Telekomunikasi, 2023 In order for underwater wireless sensor networks to communicate more efficiently, MAC protocols are needed to control the use of acoustic channels. With the high propagation delay and the limited bandwidth available on the acoustic channel, a specially ...
Muhammad Syirajuddin S. +4 more
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IEEE Access, 2019 Underwater localization is used as a key element in most applications of underwater communications. Despite the global positioning system (GPS) receivers are usually employed in terrestrial wireless sensor networks, they cannot be exploited for ...
Inam Ullah +4 more
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Value of Information Based Data Retrieval in UWSNs
Sensors, 2018 Sensor nodes in underwater sensor networks may acquire data at a higher rate than their ability to communicate over underwater acoustic channels. Autonomous underwater vehicles may mitigate this mismatch by offloading high volumes of data from the sensor
Fahad Ahmad Khan +4 more
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TDA-MAC: TDMA Without Clock Synchronization in Underwater Acoustic Networks
IEEE Access, 2018 This paper investigates the application of underwater acoustic sensor networks for large scale monitoring of the ocean environment. The low propagation speed of acoustic signals presents a fundamental challenge in coordinating the access to the shared ...
Nils Morozs +2 more
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Distributed Learning for Dynamic Channel Access in Underwater Sensor Networks
Entropy, 2020 In this study, the problem of dynamic channel access in distributed underwater acoustic sensor networks (UASNs) is considered. First, we formulate the dynamic channel access problem in UASNs as a multi-agent Markov decision process, wherein each ...
Huicheol Shin +3 more
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Distortion Performance of Underwater Acoustic Sensor Networks
International Journal of Distributed Sensor Networks, 2015 The paper studies the distortion performance of multihop underwater acoustic sensor networks. The network is composed of bottom mounted sensor nodes and the sensor to sensor links experience Rician fading. The distortion is evaluated for the case when there is interference from other sensors in the network.
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IEEE Access, 2017 With a wide scope to explore and harness the oceanic sources of interest, the field of underwater wireless sensor networks (UWSNs) is attracting a growing interest of researchers.
D. N. Sandeep, Vinay Kumar
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