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Sensors 2014, 14(3), 4672-4688; doi:10.3390/s140304672
Article

A Novel Topology Control Approach to Maintain the Node Degree in Dynamic Wireless Sensor Networks

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Received: 25 December 2013; in revised form: 20 February 2014 / Accepted: 24 February 2014 / Published: 7 March 2014
(This article belongs to the Special Issue State-of-the-Art Sensors Technology in Spain 2013)
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Abstract: Topology control is an important technique to improve the connectivity and the reliability of Wireless Sensor Networks (WSNs) by means of adjusting the communication range of wireless sensor nodes. In this paper, a novel Fuzzy-logic Topology Control (FTC) is proposed to achieve any desired average node degree by adaptively changing communication range, thus improving the network connectivity, which is the main target of FTC. FTC is a fully localized control algorithm, and does not rely on location information of neighbors. Instead of designing membership functions and if-then rules for fuzzy-logic controller, FTC is constructed from the training data set to facilitate the design process. FTC is proved to be accurate, stable and has short settling time. In order to compare it with other representative localized algorithms (NONE, FLSS, k-Neighbor and LTRT), FTC is evaluated through extensive simulations. The simulation results show that: firstly, similar to k-Neighbor algorithm, FTC is the best to achieve the desired average node degree as node density varies; secondly, FTC is comparable to FLSS and k-Neighbor in terms of energy-efficiency, but is better than LTRT and NONE; thirdly, FTC has the lowest average maximum communication range than other algorithms, which indicates that the most energy-consuming node in the network consumes the lowest power.
Keywords: Wireless Sensor Networks; fuzzy-logic control; topology control; network connectivity Wireless Sensor Networks; fuzzy-logic control; topology control; network connectivity
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.

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MDPI and ACS Style

Huang, Y.; Martínez, J.-F.; Díaz, V.H.; Sendra, J. A Novel Topology Control Approach to Maintain the Node Degree in Dynamic Wireless Sensor Networks. Sensors 2014, 14, 4672-4688.

AMA Style

Huang Y, Martínez J-F, Díaz VH, Sendra J. A Novel Topology Control Approach to Maintain the Node Degree in Dynamic Wireless Sensor Networks. Sensors. 2014; 14(3):4672-4688.

Chicago/Turabian Style

Huang, Yuanjiang; Martínez, José-Fernán; Díaz, Vicente H.; Sendra, Juana. 2014. "A Novel Topology Control Approach to Maintain the Node Degree in Dynamic Wireless Sensor Networks." Sensors 14, no. 3: 4672-4688.



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