NDLI: Optimized Cooperative Dynamic Coverage in Mixed Sensor Networks

Content Provider	ACM Digital Library
Author	Lambrou, Theofanis P.
Copyright Year	2015
Abstract	This article considers the problem of improving the dynamic coverage and event detection time of mixed wireless sensor networks (WSNs). We consider mixed WSNs that consist of sparse static sensor deployments and mobile sensors that move continuously to monitor uncovered (vacant) areas in the sensor field. Mobile sensors move autonomously and cooperatively by executing a path planning algorithm. Using a simplified scenario, the article derives the optimal path strategy for a single mobile sensor to search two nonconnected uncovered regions with the minimum average detection delay or with the maximum dynamic coverage. The resulting optimal strategy confirms that it is better to search areas that are less likely to hide a target but are located closer to the mobile node, rather than heading toward the most likely area. Based on the insights gained from the simplified scenario and the theory of coverage processes, the article proposes a surrogate method to approximate the best searching neighborhood radius (a design parameter of the path planning algorithm) that optimizes the dynamic coverage and event detection time capabilities of mixed WSN deployments. Extensive simulation results indicate that this approach can achieve very good results, both for a single and for multiple collaborating mobile sensors.
Starting Page	1
Ending Page	35
Page Count	35
File Format	PDF
ISSN	15504859
e-ISSN	15504867
DOI	10.1145/2700260
Volume Number	11
Issue Number	3
Journal	ACM Transactions on Sensor Networks (TOSN)
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2015-02-17
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Mixed sensor networks Distributed decision making Dynamic coverage Event detection Mobile sensors Path planning Search strategies
Content Type	Text
Resource Type	Article
Subject	Computer Networks and Communications

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