Proceedings of the 8th annual international conference on Mobile computing and networking
A coverage-preserving node scheduling scheme for large wireless sensor networks
WSNA '02 Proceedings of the 1st ACM international workshop on Wireless sensor networks and applications
PEAS: A Robust Energy Conserving Protocol for Long-lived Sensor Networks
ICDCS '03 Proceedings of the 23rd International Conference on Distributed Computing Systems
Radio-Triggered Wake-Up Capability for Sensor Networks
RTAS '04 Proceedings of the 10th IEEE Real-Time and Embedded Technology and Applications Symposium
ASCENT: Adaptive Self-Configuring sEnsor Networks Topologies
IEEE Transactions on Mobile Computing
Integrated coverage and connectivity configuration for energy conservation in sensor networks
ACM Transactions on Sensor Networks (TOSN)
Movement-Assisted Sensor Deployment
IEEE Transactions on Mobile Computing
Telos: enabling ultra-low power wireless research
IPSN '05 Proceedings of the 4th international symposium on Information processing in sensor networks
Improved approximation algorithms for connected sensor cover
Wireless Networks
Information fusion for wireless sensor networks: Methods, models, and classifications
ACM Computing Surveys (CSUR)
Power management in energy harvesting sensor networks
ACM Transactions on Embedded Computing Systems (TECS) - Special Section LCTES'05
Improving network lifetime using sensors with adjustable sensing ranges
International Journal of Sensor Networks
Promoting Heterogeneity, Mobility, and Energy-Aware Voronoi Diagram in Wireless Sensor Networks
IEEE Transactions on Parallel and Distributed Systems
Wireless sensor network survey
Computer Networks: The International Journal of Computer and Telecommunications Networking
Variable radii connected sensor cover in sensor networks
ACM Transactions on Sensor Networks (TOSN)
Lifetime and coverage guarantees through distributed coordinate-free sensor activation
Proceedings of the 15th annual international conference on Mobile computing and networking
Adaptive Power Management for Environmentally Powered Systems
IEEE Transactions on Computers
Coverage and Detection of a Randomized Scheduling Algorithm in Wireless Sensor Networks
IEEE Transactions on Computers
Energy-quality tradeoffs for target tracking in wireless sensor networks
IPSN'03 Proceedings of the 2nd international conference on Information processing in sensor networks
Optimal energy management policies for energy harvesting sensor nodes
IEEE Transactions on Wireless Communications
Adaptive k-coverage contour evaluation and deployment in wireless sensor networks
ACM Transactions on Sensor Networks (TOSN)
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In order to prolong the lifetime of a wireless sensor network (WSN) devoted to monitoring an area of interest, a useful means is to exploit network redundancy, activating only the sensors that are strictly necessary for coverage and making them work with the minimum necessary sensing radius. In this article, we introduce the first algorithm that reduces sensor coverage redundancy through joint Sensor Activation and sensing Radius Adaptation (SARA) in general application scenarios comprising two classes of devices: sensors with variable sensing radius and sensors with fixed sensing radius. This device heterogeneity is explicitly addressed by modeling the coverage problem through Voronoi-Laguerre diagrams that, differently from Voronoi diagrams, allow for correctly identifying each sensor coverage region depending on the sensor current radius and the radii of its neighboring nodes. SARA executes quickly with guaranteed termination and, given the currently available nodes, it always guarantees maximum coverage. By means of extensive simulations, we show that SARA obtains remarkable improvements with respect to previous solutions, ensuring, in networks with heterogeneous nodes, longer network lifetime and wider coverage.