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Title: A tree-based data collecting network structure for wireless sensor networks
Authors: Cheng, CT
Tse, CK 
Lau, FCM 
Keywords: Cluster
Data transmission
Network structure
Sensor network
Issue Date: 2008
Publisher: The Editorial Board of Journal of Electronic Science and Technology of China
Source: Journal of electronic science and technology of China, 2008, v. 6, no. 3, p. 274-278 How to cite?
Journal: Journal of electronic science and technology of China 
Abstract: In a sensor network with a large number of densely populated sensor nodes, a single target of interest may be detected by multiple sensor nodes simultaneously. Data collected from the sensor nodes are usually highly correlated, and hence energy saving using in-network data fusion becomes possible. A traditional data fusion scheme starts with dividing the network into clusters, followed by electing a sensor node as cluster head in each cluster. A cluster head is responsible for collecting data from all its cluster members, performing data fusion on these data and transmitting the fused data to the base station. Assuming that a sensor node is only capable of handling a single node-to-node transmission at a time and each transmission takes T time-slots, a cluster head with n cluster members will take at least nT time-slots to collect data from all its cluster members. In this paper, a tree-based network structure and its formation algorithms are proposed. Simulation results show that the proposed network structure can greatly reduce the delay in data collection.
ISSN: 1672-6464
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