Optimal routing and data aggregation for maximizing lifetime of wireless sensor networks

被引:111
作者
Hua, Cunqing [1 ]
Yum, Tak-Shing Peter [1 ]
机构
[1] Chinese Univ Hong Kong, Dept Informat Engn, Shatin, Hong Kong, Peoples R China
关键词
data aggregation; maximum lifetime routing; network lifetime; smoothing methods; wireless sensor networks;
D O I
10.1109/TNET.2007.901082
中图分类号
TP3 [计算技术、计算机技术];
学科分类号
0812 ;
摘要
An optimal routing and data aggregation scheme for wireless sensor networks is proposed in this paper. The objective is to maximize the network lifetime by jointly optimizing data aggregation and routing. We adopt a model to integrate data aggregation with the underlying routing scheme and present a smoothing approximation function for the optimization problem. The necessary and sufficient conditions for achieving the optimality are derived and a distributed gradient algorithm is designed accordingly. We show that the proposed scheme can significantly reduce the data traffic and improve the network lifetime. The distributed algorithm can converge to the optimal value efficiently under all network configurations.
引用
收藏
页码:892 / 903
页数:12
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