Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/25938
Title: Double mobility : coverage of the sea surface with mobile sensor networks
Authors: Luo, J
Wang, D 
Zhang, Q
Issue Date: 2009
Source: Proceedings - IEEE INFOCOM, 2009, p. 118-126 How to cite?
Abstract: We are interested in the sensor networks for scientific applications to cover and measure statistics on the sea surface. Due to flows and waves, the sensor nodes may gradually lose their positions; leaving the points of interest uncovered. Manual readjustment is costly and cannot be performed in time. We argue that a network of mobile sensor nodes which can perform self-adjustment is the best candidate to maintain the coverage of the surface area. In our application, we face a uniquedouble mobility coverage problem. That is, there is an uncontrollable mobility, U-Mobility, by the flows which breaks the coverage of the sensor network. Moreover, there is also a controllable mobility, C-Mobility, by the mobile nodes which we can utilize to reinstall the coverage. Our objective is to build an energy efficient scheme for the sensor network coverage issue with this double mobility behavior. A key observation of our scheme is that the motion of the flow is not only a curse but should also be considered as a fortune. The sensor nodes can be pushed by free to some locations that potentially help to improve the overall coverage. With that taken into consideration, more efficient movement decision can be made. To this end, we present a dominating set maintenance scheme to maximally exploit the U-Mobility and balance the energy consumption among all the sensor nodes. We prove that the coverage is guaranteed in our scheme. We further propose a fully distributed protocol that addresses a set of practical issues. Through extensive simulation, we demonstrate that the network lifetime can be significantly extended, compared to a straight forward back-to-original reposition scheme.
Description: 28th Conference on Computer Communications, IEEE INFOCOM 2009, Rio de Janeiro, 19-25 April 2009
URI: http://hdl.handle.net/10397/25938
ISBN: 9781424435135
ISSN: 0743-166X
DOI: 10.1109/INFCOM.2009.5061913
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