Geography-informed energy conservation for Ad Hoc routing
Proceedings of the 7th annual international conference on Mobile computing and networking
Proceedings of the 7th 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
Analysis on the redundancy of wireless sensor networks
WSNA '03 Proceedings of the 2nd ACM international conference on Wireless sensor networks and applications
The coverage problem in a wireless sensor network
WSNA '03 Proceedings of the 2nd ACM international conference on Wireless sensor networks and applications
Integrated coverage and connectivity configuration in wireless sensor networks
Proceedings of the 1st international conference on Embedded networked sensor systems
Differentiated surveillance for sensor networks
Proceedings of the 1st international conference on Embedded networked sensor systems
Network coverage using low duty-cycled sensors: random & coordinated sleep algorithms
Proceedings of the 3rd international symposium on Information processing in sensor networks
On k-coverage in a mostly sleeping sensor network
Proceedings of the 10th annual international conference on Mobile computing and networking
Estimating Coverage Holes and Enhancing Coverage in Mixed Sensor Networks
LCN '04 Proceedings of the 29th Annual IEEE International Conference on Local Computer Networks
Barrier coverage with wireless sensors
Proceedings of the 11th annual international conference on Mobile computing and networking
An energy aware coverage-preserving scheme for wireless sensor networks
PE-WASUN '05 Proceedings of the 2nd ACM international workshop on Performance evaluation of wireless ad hoc, sensor, and ubiquitous networks
Coverage in wireless ad hoc sensor networks
IEEE Transactions on Computers
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Sensing coverage preserving is a hot research spot in the wireless sensor network. In order to simplify the research on such issue, the disk sensing range assumption is used in most coverage-aware algorithms. Based on such assumption some efficient central angle methods were proposed to identify fully sponsored sensors. However, the disk assumption is too strong in the real world and can not be held in high accurate scenarios. This paper investigates the coverage problem under both disk and simple polygon sensing range assumptions. An Association Sponsors Method (ASM) was described in order to enhance the central angle method while a new Intersection Point Method (IPM) were proposed for simple polygon sensing range. In order to provide an adjustable accuracy we devise an Unit Circle Test(UCT) method which can satisfy different accuracy requirements by adjusting test radius to tolerant holes. Our protocols were implemented on in the NS-2 simulator. Performance of our schemes were evaluated through a set of simulation experiments and compared to the Central Angle Method (CAM). Our protocols can efficiently identify fully covered sensors, discover holes (blind points), and archieve better quality results than CAM under both disk sensing range and simple polygon sensing range assumption. The performance and flexibility of IPM makes it a potential solution for applications that require a high coverage accuracy