On optimal anchor placement for effecient area-based localization in wireless networks
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Date
2015-06-08
Journal Title
Journal ISSN
Volume Title
Publisher
CERIST
Abstract
Area-based localization is a simple and efficient approach,
where each node estimates its position based on proxim-
ity information to some special nodes with known location,
called anchors. Based on the anchors’ coordinates, each node
first determines its residence area and then approximates its
position as the centroid of that area. Therefore, the accu-
racy of the estimated position depends on the size of the
residence area; the smaller the residence area is, the bet-
ter the accuracy is likely to be. Because the size of the
residence area mainly depends on the number and the posi-
tions of anchor nodes, their deployment should be carefully
considered in order to achieve a better accuracy while mini-
mizing the cost. For this purpose, in this paper we conduct
a theoretical study on anchor placement for a very popular
area based localization approach. We determine the optimal
anchor placement pattern for increased accuracy and how
to achieve a particular accuracy goal with the least anchor
count. Our analytical results are further validated through
simulation.
Description
Keywords
Localization, area-based, anchor