JOURNAL OF SOFTWARE (JSW)
ISSN : 1796-217X
Volume : 4    Issue : 3    Date : May 2009

The Localized Area Coverage Algorithm Based on Delayed Start Scheme For WSN
Xin He and Xiaolin Gui
Page(s): 183-190
Full Text:
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Abstract
The Coverage Control Technology is the one of the basic technologies of wireless sensor network,
and is mainly concerned about how to prolong the network lifetime on the basis of meeting user’s
perception demand. Among this technology, localized area coverage algorithm in the study of area
coverage technology is gradually attracting wide attention, for its less traffic and lower single-node
computation. However, the existing localized area coverage algorithm has either phenomenon of
coverage holes and can’t meet user’s perception demand or phenomenon of Nibble and leads to
too much active nodes and shortens network lifetime. Therefore, localized area coverage algorithm
based on delayed start scheme is proposed. It applies time round mechanism without knowing the
network topology in advance and uses circle intersection coverage evaluation algorithm to ensure
fully covered area and avoid the phenomenon of coverage loopholes. What is more, the application
of delayed start scheme reduces the phenomenon of Nibble. According to the experimental results,
compared with the existing localized area coverage algorithms, this algorithm can prolong the
network lifetime on the basis of meeting user’s perception demand.

Index Terms
Wireless Sensor Network, Localized Area Coverage algorithm, Phenomenon of Nibble, Delayed
Start Scheme, Network Lifetime