Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/28179
Title: A delay-aware data collection network structure for wireless sensor networks
Authors: Cheng, CT 
Tse, CK 
Lau, FCM 
Keywords: Centralized control
distributed control
networks
optimization methods
topology
Issue Date: 2011
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE Sensors Journal, 2011, v. 11, no. 3, 5582135, p. 699-710 How to cite?
Journal: IEEE sensors journal 
Abstract: Wireless sensor networks utilize large numbers of wireless sensor nodes to collect information from their sensing terrain. Wireless sensor nodes are battery-powered devices. Energy saving is always crucial to the lifetime of a wireless sensor network. Recently, many algorithms are proposed to tackle the energy saving problem in wireless sensor networks. In these algorithms, however, data collection efficiency is usually compromised in return for gaining longer network lifetime. There are strong needs to develop wireless sensor networks algorithms with optimization priorities biased to aspects besides energy saving. In this paper, a delay-aware data collection network structure for wireless sensor networks is proposed. The objective of the proposed network structure is to minimize delays in the data collection processes of wireless sensor networks. Two network formation algorithms are designed to construct the proposed network structure in a centralized and a decentralized approach. Performances of the proposed network structure are evaluated using computer simulations. Simulation results show that, when comparing with other common network structures in wireless sensor networks, the proposed network structure is able to shorten the delays in the data collection process significantly.
URI: http://hdl.handle.net/10397/28179
ISSN: 1530-437X
DOI: 10.1109/JSEN.2010.2063020
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