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Sensors 2016, 16(3), 343;

Protocol to Exploit Waiting Resources for UASNs

Department of Computer Science and Information Engineering, Aletheia University, New Taipei City 251, Taiwan
Author to whom correspondence should be addressed.
This paper is an extended version of our paper published in Algorithms and Analysis for Computational Biology. Hung, L.-L.; Luo, Y.-J. A Protocol for Efficient Transmissions in UASNs. In Proceedings of the IEEE 33rd International Conference on Distributed Computing Systems Workshops (ICDCSW), Philadelphia, PA, USA, 8–11 July 2013; pp. 333–338.
Academic Editor: Jaime Lloret Mauri
Received: 15 December 2015 / Revised: 28 February 2016 / Accepted: 1 March 2016 / Published: 8 March 2016
(This article belongs to the Special Issue Underwater Sensor Nodes and Underwater Sensor Networks 2016)
PDF [2897 KB, uploaded 8 March 2016]


The transmission speed of acoustic waves in water is much slower than that of radio waves in terrestrial wireless sensor networks. Thus, the propagation delay in underwater acoustic sensor networks (UASN) is much greater. Longer propagation delay leads to complicated communication and collision problems. To solve collision problems, some studies have proposed waiting mechanisms; however, long waiting mechanisms result in low bandwidth utilization. To improve throughput, this study proposes a slotted medium access control protocol to enhance bandwidth utilization in UASNs. The proposed mechanism increases communication by exploiting temporal and spatial resources that are typically idle in order to protect communication against interference. By reducing wait time, network performance and energy consumption can be improved. A performance evaluation demonstrates that when the data packets are large or sensor deployment is dense, the energy consumption of proposed protocol is less than that of existing protocols as well as the throughput is higher than that of existing protocols. View Full-Text
Keywords: bandwidth utilization; propagation delay; throughput; underwater acoustic sensor networks; UASNs bandwidth utilization; propagation delay; throughput; underwater acoustic sensor networks; UASNs

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Hung, L.-L.; Luo, Y.-J. Protocol to Exploit Waiting Resources for UASNs. Sensors 2016, 16, 343.

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