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Information 2017, 8(4), 153; doi:10.3390/info8040153

A Routing Protocol Based on Received Signal Strength for Underwater Wireless Sensor Networks (UWSNs)

1,2,3
,
1,2,* , 1
,
1,2
and
1,2
1
Department of Computer, Qinghai Normal University, Xining 810008, China
2
Key Laboratory of the Internet of Things of Qinghai Province, Xining 810008, China
3
College of Physics and Electronic Information Engineering, Qinghai Nationalities University, Xining 810007, China
*
Author to whom correspondence should be addressed.
Received: 23 October 2017 / Revised: 17 November 2017 / Accepted: 22 November 2017 / Published: 24 November 2017
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Abstract

Underwater wireless sensor networks (UWSNs) are featured by long propagation delay, limited energy, narrow bandwidth, high BER (Bit Error Rate) and variable topology structure. These features make it very difficult to design a short delay and high energy-efficiency routing protocol for UWSNs. In this paper, a routing protocol independent of location information is proposed based on received signal strength (RSS), which is called RRSS. In RRSS, a sensor node firstly establishes a vector from the node to a sink node; the length of the vector indicates the RSS of the beacon signal (RSSB) from the sink node. A node selects the next-hop along the vector according to RSSB and the RSS of a hello packet (RSSH). The node nearer to the vector has higher priority to be a candidate next-hop. To avoid data packets being delivered to the neighbor nodes in a void area, a void-avoiding algorithm is introduced. In addition, residual energy is considered when selecting the next-hop. Meanwhile, we establish mathematic models to analyze the robustness and energy efficiency of RRSS. Lastly, we conduct extensive simulations, and the simulation results show RRSS can save energy consumption and decrease end-to-end delay. View Full-Text
Keywords: UWSNs; routing protocol; received signal strength; energy consumption; void-avoiding algorithm UWSNs; routing protocol; received signal strength; energy consumption; void-avoiding algorithm
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Li, M.; Du, X.; Huang, K.; Hou, S.; Liu, X. A Routing Protocol Based on Received Signal Strength for Underwater Wireless Sensor Networks (UWSNs). Information 2017, 8, 153.

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