An Energy-Efficient Approach to Enhance Virtual Sensors Provisioning in Sensor Clouds Environments

Virtual sensors provisioning is a central issue for sensors cloud middleware since it is responsible for selecting physical nodes, usually from Wireless Sensor Networks (WSN) of different owners, to handle user's queries or applications. Recent works perform provisioning by clustering sensor no...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2018-02, Vol.18 (3), p.689
Main Authors: Lemos, Marcus Vinícius de S, Filho, Raimir Holanda, Rabêlo, Ricardo de Andrade L, de Carvalho, Carlos Giovanni N, Mendes, Douglas Lopes de S, Costa, Valney da Gama
Format: Article
Language:English
Subjects:
ant colony optimization
Clustering
Correlation analysis
Energy consumption
Middleware
Provisioning
Queries
Remote sensors
Sensors
Virtual environments
Virtual sensors
virtualization
Wireless sensor networks
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Summary:Virtual sensors provisioning is a central issue for sensors cloud middleware since it is responsible for selecting physical nodes, usually from Wireless Sensor Networks (WSN) of different owners, to handle user's queries or applications. Recent works perform provisioning by clustering sensor nodes based on the correlation measurements and then selecting as few nodes as possible to preserve WSN energy. However, such works consider only homogeneous nodes (same set of sensors). Therefore, those works are not entirely appropriate for sensor clouds, which in most cases comprises heterogeneous sensor nodes. In this paper, we propose ACxSIMv2, an approach to enhance the provisioning task by considering heterogeneous environments. Two main algorithms form ACxSIMv2. The first one, ACASIMv1, creates multi-dimensional clusters of sensor nodes, taking into account the measurements correlations instead of the physical distance between nodes like most works on literature. Then, the second algorithm, ACOSIMv2, based on an Ant Colony Optimization system, selects an optimal set of sensors nodes from to respond user's queries while attending all parameters and preserving the overall energy consumption. Results from initial experiments show that the approach reduces significantly the sensor cloud energy consumption compared to traditional works, providing a solution to be considered in sensor cloud scenarios.
ISSN:1424-8220
1424-8220
DOI:10.3390/s18030689