Three-dimensional location in RFID systems with mobile reader

Several researches in the literature propose mechanisms for locating RFID tags using the RSSI indicator. However, the vast majority of these researches propose two-dimensional (2D) location solutions. In this work, we adopted a matrix composed of physical reference tags and virtual reference tags together with a mobile reader, to promote the localization of RFID tags in three-dimensional (3D) environment. In addition, our research differs from the others since we use mobile RFID reader, a feature that reduces deployment costs as a result of not having to use a set of fixed RFID readers. We developed the mechanism using the Matlab software and the performed experiments, demonstrated that our proposal obtained greater location accuracy, with gains of 46% when compared to the location error of other solutions.