Paper Title
A Practitionar Approach For Node Localizability Of Wireless Ad-Hoc And Sensor Networks
Abstract
Location awareness is highly critical for wireless ad-hoc and sensor networks. Many efforts have been made to
solve the problem of whether or not a network can be localized. Nevertheless, based on the data collected from a working
sensor network, it is observed that the network is not always entirely localizable. Existing studies merely examine whether or
not a network is localizable as a whole; yet two fundamental questions remain unaddressed: First, given a network
configuration, whether or not a specific node is localizable? Second, how many nodes in a network can be located and which
are them? In this study, we analyze the limitation of previous works and propose a novel concept of node localizability. By
deriving the necessary and sufficient conditions for node localizability, for the first time, it is possible to analyze how many
nodes one can expect to locate in sparsely or moderately connected networks. To validate this design, we implement our
solution on a real-world system and the experimental results show that node localizability provides useful guidelines for
network deployment and other location-based services.