Abstract
In order to guarantee the tag identification accuracy and efficiency in mobile radio frequency identification system, it is necessary to estimate the tags’ arrival rate before performing identification. This research aims to develop a novel estimation method based on improved grey model(1,1) and sliding window mechanism. By establishing tags’ dynamic arrival model, this article emphasizes the importance of tags’ arrival rate estimation in mobile radio frequency identification system. Using sliding window mechanism and weighted coefficients method, weighted grey model(1,1) with sliding window (WGMSW(1,1)) is proposed based on traditional grey model(1,1). For experimental verification, three kinds of data are used as original data in WGMSW(1,1). The experimental results show that the proposed method has lower estimation error rate, lower computation complexity, and high system stability.
Highlights
With the rapid development of Internet of things (IOT),1 radio frequency identification (RFID) technology becomes popular to users who want to track something
If the objects with tags are moving during identification, this kind of system is called mobile RFID system
We proposed a tag arrival rate prediction method WGMSW[1,1] based on traditional GM[1,1] in RFID systems
Summary
With the rapid development of Internet of things (IOT), radio frequency identification (RFID) technology becomes popular to users who want to track something. If the objects with tags are moving during identification, this kind of system is called mobile RFID system.. No matter stable RFID system or mobile RFID system, there is an unavoidable phenomenon which is called confliction. When more than two tags reply the request simultaneously, the confliction will occur.. When more than two tags reply the request simultaneously, the confliction will occur.3,4 In this circumstance, the reader usually cannot identify any of conflicted tags, and the time will be consumed. In stable RFID system, the unidentified tags can attend identification process, and all the tags can be successfully identified. In mobile RFID system, if tags cannot be identified before moving out of the identification region, this phenomenon is called tag loss.. Tag loss is a more serious problem than that in stable RFID system
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