Data Reduction and Aggregation in Wireless Sensor Networks

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Rooshenas Amir Mohammad | 2010

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 40281 (19)
University: Sharif University of Technology
Department: Computer Engineering
Advisor(s): Movaghar Rahimabadi, Ali
Abstract:
Data transmission consumes most of the power resources in wireless sensor networks. Con-sequently, a large number of methods have been devised to cope with this problem. In this thesis, we propose a data reduction algorithm based on the transmission workload of interme-diate nodes. We aggregate the incoming packets to the intermediate nodes into one packet by employ ing the Principal Component Analysis (PCA). Therefore, each intermediate node only sends one packet in stead of relaying all the incoming packets and hence we achieve consid-erable reduction in power consumption at those nodes. Although this approach imposes some delay for buffering the incoming packets, but extending the lifetime of intermediate nodes en-sures longevity of the whole network. Using data simulations and numerical results, we have shown that the proposed method is more efficient in compare to related works
Keywords:
Wireless Sensor Network ; Energy Consumption Optimization ; Data Reduction ; Data Aggregation