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International Journal of Distributed Sensor Networks
Volume 2013 (2013), Article ID 867385, 11 pages
http://dx.doi.org/10.1155/2013/867385
Research Article

An Overlapping Clustering Approach for Routing in Wireless Sensor Networks

School of Software, Dalian University of Technology, China

Received 10 January 2013; Accepted 13 February 2013

Academic Editor: Lei Shu

Copyright © 2013 Zhenquan Qin et al. 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.

Abstract

The design and analysis of routing algorithm is an important issue in wireless sensor networks (WSNs). Most traditional geographical routing algorithms cannot achieve good performance in duty-cycled networks. In this paper, we propose a k-connected overlapping clustering approach with energy awareness, namely, k-OCHE, for routing in WSNs. The basic idea of this approach is to select a cluster head by energy availability (EA) status. The k-OCHE scheme adopts a sleep scheduling strategy of CKN, where neighbors will remain awake to keep it k connected, so that it can balance energy distributions well. Compared with traditional routing algorithms, the proposed k-OCHE approach obtains a balanced load distribution, consequently a longer network lifetime, and a quicker routing recovery time.