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Sensors 2011, 11(3), 3078-3093; doi:10.3390/s110303078

An Efficient Transmission Power Control Scheme for Temperature Variation in Wireless Sensor Networks

Department of Communication Engineering, Kwangwoon University, 447-1 Wolgye-Dong, Nowon-Ku, Seoul 139-701, Korea
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Author to whom correspondence should be addressed.
Received: 14 February 2011 / Revised: 6 March 2011 / Accepted: 7 March 2011 / Published: 10 March 2011
(This article belongs to the Special Issue Semantic Sensor Network Technologies and Applications)
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Abstract

Wireless sensor networks collect data from several nodes dispersed at remote sites. Sensor nodes can be installed in harsh environments such as deserts, cities, and indoors, where the link quality changes considerably over time. Particularly, changes in transmission power may be caused by temperature, humidity, and other factors. In order to compensate for link quality changes, existing schemes detect the link quality changes between nodes and control transmission power through a series of feedback processes, but these approaches can cause heavy overhead with the additional control packets needed. In this paper, the change of the link quality according to temperature is examined through empirical experimentation. A new power control scheme combining both temperature-aware link quality compensation and a closed-loop feedback process to adapt to link quality changes is proposed. We prove that the proposed scheme effectively adapts the transmission power to the changing link quality with less control overhead and energy consumption.
Keywords: wireless sensor networks; transmission power control; temperature; link quality wireless sensor networks; transmission power control; temperature; link quality
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Lee, J.; Chung, K. An Efficient Transmission Power Control Scheme for Temperature Variation in Wireless Sensor Networks. Sensors 2011, 11, 3078-3093.

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