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In the paper, a new range-boundary aware mobility-assisted localization(RAML) scheme is presented to make mobile sink identify the location of sensor nodes which are deployed in a random mode within a certain geographical area. Not like other localization techniques, the presented localization scheme works without any additional hardware and achieves better efficiency through broadcasting special...
This paper studies data forwarding in wireless sensor networks (WSNs) where sensor nodes are randomly duty-cycled to save energy. The duty-cycling operation requires the data delivery strategy to be more adaptive for the dynamics caused by the uncertainty of node working schedules. However, the existing maximum-advance routing scheme, at each step the forwarding node selects the node closest to the...
In this paper we study the problem of collaboration in RF-Sensor networks, comprised of a large number of very small and low cost nodes, capable of sensing, communicating and computing. The Multi-phases Collaboration of such nodes may lead to the accomplishment of large sensing tasks, having useful applications in practice. First, we research two collaboration methods, one is no collaboration and...
Deterministic deployment issue is different from most cases in wireless sensor network. To find a solution for limited number of sensor nodes in known area, this article proposed a new method to attain minimum nodes and maximum detection probability. Based on a more realistic detection method, this article adapts Delaunay Triangulation method to deploy new nodes according to their importance. A scoring...
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