Dual Optimization of Dynamic Sensor Function Allocation and Effective Sensed Data Aggregation in Wireless Sensor Networks

Authors:
Ryouhei Kawano;Toshiaki Miyazaki
Affiliations:
Graduate School of Computer Science and Engineering, The University of Aizu, Aizu-Wakamatsu, Fukushima, Japan 965-8580;Graduate School of Computer Science and Engineering, The University of Aizu, Aizu-Wakamatsu, Fukushima, Japan 965-8580
Venue:
FGIT '09 Proceedings of the 1st International Conference on Future Generation Information Technology
Year:
2009

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Abstract

This paper proposes a method for dual optimization of sensor function allocation and effective data aggregation in wireless sensor networks. This method realizes dynamic allocation of sensor functions so as to balance the distribution of each sensor function in a target monitoring area. In addition, effective data aggregation is performed by using a tree network topology and time division multiple access (TDMA), which is a collision-free communication scheme. By comparing the results from the proposed method with the results from non-optimized methods, it can be validated that the proposed method is more effective. The proposed method is 1.7 times more efficient than non-optimized methods in distributing sensor functions. With this method, the network lifetime is doubled, and the number of data packets received at a base station (BS) is considerably increased by avoiding packet collisions.