| Summary: | 碩士 === 中華大學 === 資訊工程學系碩士班 === 99 === RFID (Radio Frequency Indentification) is an automatic wireless identification and data collection technology, has been used for many years, more and more application areas. Today, smart chip which can be readed, written, and preventing unauthorized access memory already used on many containers, pallets, packing, ID card, book, or DVD. In addition to logistics management, it is also used for staff management or a wide range of navigation service, such as guided tours of the Museum interpretation, which diversifies RFID applications. Efficiency improvement of RFID identification has always been a study on the direction, reader collision or tag collision is one of the factors directly affect the effectiveness of the identification.
This paper proposes Adaptive Anticollision and Antiinterference Protocol (AAA) to against the reader collision problem. This method uses the Back-Off Time Scheduling, not only effectively resolve the reader collision problem, but also has bery good efficacy at high density and the dynamic environment. Because of using distributed protocol, so no extra hardware is needed to coordinate reader, that resuts in low cost of application building. Meanwhile, the discussion and solution have been proposed to avoid interference problem which is generated from reader and hidden Terminal to increase reading efficiency. This paper evalutates effectiveness in AAA protocol, simulation result shows AAA in static and dynamic environment has great data throughput performance.
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