Data aggregation in wireless sensor networks using ant colony algorithm.pdf

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Data aggregation in wireless sensor networks using ant colony algorithm.pdf

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Data aggregation in wireless sensor networks using ant colony algorithm

ARTICLE IN PRESSJournal of Network and Computer Applications 31 (2008) 387–4011084-8045/$ - doi:10.1016/j Correspo E-mail /locate/jncaData aggregation in wireless sensor networks using ant colony algorithm Wen-Hwa Liao, Yucheng Kao, Chien-Ming Fan Department of Information Management, Tatung University, No. 40, Sec. 3, Chungshan N. Road, Taipei 104, Taiwan Received 24 August 2007; received in revised form 28 February 2008; accepted 28 February 2008Abstract Data aggregation is important in energy constraint wireless sensor networks which exploits correlated sensing data and aggregates at the intermediate nodes to reduce the number of messages exchanged network. This paper considers the problem of constructing data aggregation tree in a wireless sensor network for a group of source nodes to send sensory data to a single sink node. The ant colony system provides a natural and intrinsic way of exploring search space in determining data aggregation. Moreover, we propose an ant colony algorithm for data aggregation in wireless sensor networks. Every ant will explore all possible paths from the source node to the sink node. The data aggregation tree is constructed by the accumulated pheromone. Simulations have shown that our algorithm can reduce significant energy costs. r 2008 Elsevier Ltd. All rights reserved. Keywords: Ant colony; Data aggregation; Wireless sensor networks1. Introduction Recent advances in wireless communications and electronics have enabled the development of low-cost, low-power, multifunctional sensor nodes that are small in size and communicate in short distances. Wireless sensor networks are becoming a rapidly developing area in both research and application. Although it was originally driven by military applications, wireless sensor networks are being investigated and applied in manysee front matter r 2008 Elsevier Ltd. All rights reserved. .jnca.2008.02.006 nding author. Tel.: +886 23608; fax: +8862 dress: whliao@.tw (W.-H. L