Abstract
This paper studies physical location determination problem of wireless sensor nodes by using mobile anchor nodes. The tuning law of localization parameters is provided according to different application scenarios. A novel node localization scheme SAA-ERL (speed adaptive adjustment-energy ratio localization) is presented for wireless sensor networks. In the scheme, SAA mechanism decides the proper moving speed and direction for the mobile anchor node, ERL mechanism produces a set of virtual hyperspheres to help unknown nodes to discover their locations. Different from the traditional localization schemes where stationary anchor nodes are usually used to estimate location-unaware nodes, the proposed scheme is based on the periodic beacon packets of mobile anchor nodes in the sensing region. The simulation results indicate that the proposed SAA-ERL localization scheme enriches applicable requirements.
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