| Summary: | 碩士 === 中華大學 === 資訊工程學系碩士在職專班 === 100 === Radio Frequency Identification (RFID), is one of the wireless non-contact identification technologies. The RFID system mainly consists of two major components: (1) RFID tag, which is used to store information, and (2) RFID reader, which is used to access the information that are stored into RFID tags through radio wave. An object where a RFID tag is attached can be identified and tracked through a RFID reader without physical contact. Due to its convenience, RFID is progressively becoming common in recent years. However, there are problems that exist in RFID systems need to be solved, such as tag collision, reader collision, and the problem of redundant reader. The problem of redundant reader was proposed in recent years. Eliminating redundant reader not only decreases the number of probability of reader collision but also reduces the power consumption. In this paper, we mainly addressed the redundant reader problem, and hence a redundant reader elimination algorithm named Overlap Aware Redundant Reader Elimination (OA) was proposed. It analyzes the relationships between readers and tags to eliminate the redundant readers. In order to accurately evaluate the performance of the proposed method, it was performed in a variety of scenarios. The experiment results show that the proposed method eliminates the most number of redundant readers as compared with the RRE, the LEO, the LEO+RRE, the SDRRE, and the DRRE.
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