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Sensors 2010, 10(10), 8938-8952;

A Smart Checkpointing Scheme for Improving the Reliability of Clustering Routing Protocols

School of Computer Science and Engineering, Seoul National University, Seoul, Korea
Department of Computer Engineering, Hansung University, Seoul, Korea
The National Institute for Research in Computer Science and Automatic Control (INRIA) / Montbonnot Saint Martin, France
School of Computing, Soongsil University, Seoul, Korea
Author to whom correspondence should be addressed.
Received: 22 July 2010 / Revised: 13 September 2010 / Accepted: 28 September 2010 / Published: 29 September 2010
(This article belongs to the Special Issue Intelligent Sensors - 2010)
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In wireless sensor networks, system architectures and applications are designed to consider both resource constraints and scalability, because such networks are composed of numerous sensor nodes with various sensors and actuators, small memories, low-power microprocessors, radio modules, and batteries. Clustering routing protocols based on data aggregation schemes aimed at minimizing packet numbers have been proposed to meet these requirements. In clustering routing protocols, the cluster head plays an important role. The cluster head collects data from its member nodes and aggregates the collected data. To improve reliability and reduce recovery latency, we propose a checkpointing scheme for the cluster head. In the proposed scheme, backup nodes monitor and checkpoint the current state of the cluster head periodically. We also derive the checkpointing interval that maximizes reliability while using the same amount of energy consumed by clustering routing protocols that operate without checkpointing. Experimental comparisons with existing non-checkpointing schemes show that our scheme reduces both energy consumption and recovery latency. View Full-Text
Keywords: checkpointing; wireless sensor networks; clustering routing protocols checkpointing; wireless sensor networks; clustering routing protocols
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Min, H.; Jung, J.; Kim, B.; Cho, Y.; Heo, J.; Yi, S.; Hong, J. A Smart Checkpointing Scheme for Improving the Reliability of Clustering Routing Protocols. Sensors 2010, 10, 8938-8952.

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