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Information Technology Journal
Year: 2010  |  Volume: 9  |  Issue: 5  |  Page No.: 864 - 876

Approximation Two Independent Sets Based Connected Dominating Set Construction Algorithm for Wireless Sensor Networks

Z. Liu, B. Wang and Q. Tang    

Abstract: In WSNs (Wireless Sensor Networks), an optimized way of prolonging the networks lifetime and flooding packets is to find the minimum CDS (Connected Dominating Set). In this study, a new method called ATISA (Approximation Two Independent Sets based Algorithm) for constructing CDS is proposed. The ATISA has three stages. The first stage is constructing a connected set CS (connected set) and the second stage is constructing a connected dominating set CDS and the third stage is pruning the redundant dominators of CDS. The performance ratio of ATISA is approximately (9.67+19nk) when the number of nodes is bigger enough and the message complexity is O(n). Compared with some famous CDS construction algorithms, ATISA constructs the CDS with the smallest size.

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