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Underwater Sensor Networks: A New Energy Efficient and Robust Architecture
Open AccessArticle

Enhancing the Reliability of Head Nodes in Underwater Sensor Networks

by Hong Min 1, Yookun Cho 1 and Junyoung Heo 2,*
School of Computer Science and Engineering, Seoul National University, Seoul 151-742, Korea
Department of Computer Engineering, Hansung University, Seoul 151-742, Korea
Author to whom correspondence should be addressed.
Sensors 2012, 12(2), 1194-1210;
Received: 15 December 2011 / Revised: 20 January 2012 / Accepted: 21 January 2012 / Published: 31 January 2012
(This article belongs to the Special Issue Underwater Sensor Nodes and Underwater Sensor Networks)
Underwater environments are quite different from terrestrial environments in terms of the communication media and operating conditions associated with those environments. In underwater sensor networks, the probability of node failure is high because sensor nodes are deployed in harsher environments than ground-based networks. The sensor nodes are surrounded by salt water and moved around by waves and currents. Many studies have focused on underwater communication environments in an effort to improve the data transmission throughput. In this paper, we present a checkpointing scheme for the head nodes to quickly recover from a head node failure. Experimental results show that the proposed scheme enhances the reliability of the networks and makes them more efficient in terms of energy consumption and the recovery latency compared to the previous scheme without checkpointing. View Full-Text
Keywords: underwater sensor networks; clustering; checkpointing underwater sensor networks; clustering; checkpointing
MDPI and ACS Style

Min, H.; Cho, Y.; Heo, J. Enhancing the Reliability of Head Nodes in Underwater Sensor Networks. Sensors 2012, 12, 1194-1210.

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