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Efficient Localization Scheme with Ring Overlapping by Utilizing Mobile Anchors in Wireless Sensor Networks YEONG-SHENG CHEN and YUN-JU TING, National Taipei University of Education, Taiwan CHIH-HENG KE, National Quemoy University, Taiwan NAVEEN CHILAMKRUTI, La Trobe University, Australia JONG HYUK PARK, Seoul National University of Science and Technology, Korea This study proposes an efficient localization scheme in wireless sensor networks. The proposed scheme utilizes mobile anchors and is based on ring overlapping. In a wireless sensor network, the nodes that know their locations are called reference nodes, and the other nodes that are without the knowledge of their locations are called blind nodes. To localize a certain blind node, by comparing the relative RSSI (Received Signal Strength Indicator) values among nodes, mobile beacons are utilized to find out the rings that are centered at a reference node and contain the blind node. These rings are called B-Rings. Since the mobile anchors and the reference nodes know their own locations, the B-Rings can be precisely derived. Moreover, by using multiple mobile beacons, the widths of the B-Rings can be further minimized; and then by overlapping them, the location of the blind nodes can be efficiently estimated. Most existing localization schemes
ACM Transactions on Embedded Computing Systems (TECS) – Association for Computing Machinery
Published: Feb 1, 2013
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