Paper Info
Title
Energy Efficient Correlated Data Aggregation for Wireless Sensor Networks
Abstract
Data aggregations from Sensors to a sink in wireless sensor networks (WSNs) are typically characterized by correlation along the spatial, semantic, and temporal dimensions. Exploiting such correlation when performing data aggregation can result in considerable improvements in the bandwidth and energy performance of WSNs. For the sensors-to-sink data delivery, we first explore two theoretical solutions: the shortest path tree (SPT) and the minimum spanning tree (MST) approaches. To approximate the optimal solution (MST) in case of perfect correlation among data, we propose a new aggregation which combines the minimum dominating set (MDS) with the shortest path tree (SPT) in order to aggregate correlated data. To reduce the redundancy among correlated data and simplify the synchronization among transmission, the proposed aggregation takes two stages: local aggregation among sensors around a node in the MDS and global aggregation among sensors in the MDS. Finally, using discrete event simulations, we show that the proposed aggregation outperforms the SPT and closely approximates the centralized optimal solution, the MST, with less amount of overhead and in a decentralized fashion.
Year
DOI
Venue
2008
10.1016/j.jpdc.2010.05.009
Journal of Parallel and Distributed Computing
Keywords
Field
DocType
Wireless Sensor Networks,Reliable Transport Protocols
Synchronization,Computer science,Efficient energy use,Computer network,Bandwidth (signal processing),Redundancy (engineering),Shortest-path tree,Wireless sensor network,Data aggregator,Minimum spanning tree,Distributed computing
Journal
Volume
Issue
ISSN
70
9
null
Citations 
PageRank 
References 
11
0.71
11
Authors
2
Name
Order
Citations
PageRank
Seung-Jong Park131931.12
Raghupathy Sivakumar22679340.00