Abstract
Radio Frequency Identification (RFID) technology has been widely used in indoor location tracking, especially serving human beings, due to its advantage of low cost, non-contact communication, resistance to hostile environments and so forth. Over the years, many indoor location tracking methods have been proposed. However, tracking mobile RFID readers in real-time has been a daunting task, especially for achieving high localization accuracy. In this paper, we propose a new Mobile RFID (M-RFID)-based Localization approach for Indoor Human Tracking, named MRLIHT. Based on the M-RFID model where RFID readers are equipped on the moving objects (human beings) and RFID tags are fixed deployed in the monitoring area, MRLIHT implements the real-time indoor location tracking effectively and economically. First, based on the readings of multiple tags detected by an RFID reader simultaneously, MRLIHT generates the response regions of tags to the reader. Next, MRLIHT determines the potential location region of the reader where two algorithms are devised. Finally, MRLIHT estimates the location of the reader by dividing the potential location region of the reader into finer-grained grids. The experimental results demonstrate that the proposed MRLIHT performs well in both accuracy and scalability.
Highlights
Radio Frequency Identification (RFID) [1,2,3] is a technique of automatic identification using radio frequency transmission
RFID tags are fixed deployed in the monitoring area, MRLIHT implements the real-time indoor location tracking effectively and economically
(i.e., mobile RFID) model, RFID readers are equipped on the moving objects and RFID tags are fixed deployed at some points in the monitoring area
Summary
Radio Frequency Identification (RFID) [1,2,3] is a technique of automatic identification using radio frequency transmission. RFID technology is widely used in many real-world applications, e.g., real-time tracking, activity recognition, etc, and impacts almost all aspects of people’s daily life. An RFID system consists of readers and tags, where readers communicate with tags through radio signals. RFID tags are categorized as either active or passive. Active tags are powered by on-board batteries and broadcast their signals continuously, while passive tags are powered by the electromagnetic energy transmitted from RFID readers. Since the maturely developed GPS-based localization systems do not perform well for indoor location tracking applications, RFID-based localization technologies have become popular in several indoor tracking schemes. We aim to propose an effective RFID-based localization approach for indoor human tracking, which can be pervasively used in the large-scale and high-accurate tracking applications
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