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2008

Adaptive Data Collection Strategies for Lifetime-Constrained Wireless Sensor Networks

8 years 3 months ago
Adaptive Data Collection Strategies for Lifetime-Constrained Wireless Sensor Networks
Communication is a primary source of energy consumption in wireless sensor networks. Due to resource constraints, the sensor nodes may not have enough energy to report every reading to the base station over a required network lifetime. This paper investigates data collection strategies in lifetime-constrained wireless sensor networks. Our objective is to maximize the accuracy of data collected by the base station over the network lifetime. Instead of sending sensor readings periodically, the relative importance of the readings is considered in data collection: the sensor nodes send data updates to the base station when the new readings differ more substantially from the previous ones. We analyze the optimal update strategy and develop adaptive update strategies for both individual and aggregate data collections. We also present two methods to cope with message losses in wireless transmission. To make full use of the energy budgets, we design an algorithm to allocate the numbers of upda...
Xueyan Tang, Jianliang Xu
Added 15 Dec 2010
Updated 15 Dec 2010
Type Journal
Year 2008
Where TPDS
Authors Xueyan Tang, Jianliang Xu
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