A Middleware-Based RFID System Reader De-redundancy Method

Abstract

The invention discloses a redundancy eliminating algorithm of an RFID (radio frequency identification) system reader based on a middleware. The method relies on an EPC (electronic product code) network architecture to utilizes label information of an RFID middleware to judge a redundant reader. The algorithm does not require system topology or require a reader to write information into a label, and has good flexibility and expandability. Compared with the typical algorithm LEO+RRE (Layered Elimination Optimization+ Recurrence Risk Estimator), the algorithm improves the detection rate of the redundant reader for 6.27-20.80%, and reduces data quantity of the labels to be obtained and processed by the system for 4.50-35.73%, so as to further optimize rationality of system deployment.

Description

technical field [0001] The invention relates to the field of radio frequency identification (RFID) network technology, in particular to a middleware-based RFID system reader redundancy removal method. Background technique [0002] RFID (Radio Frequency Identification) is a system for automatic identification and wireless data acquisition. With the rapid development of the electronics industry, RFID technology has been widely used in supply chain management, medical monitoring, positioning and navigation, smart home and many other fields, and is regarded by the industry as one of the core technologies for realizing the Internet of Things. [0003] Redundant-reader Problem is one of the basic issues affecting the performance of RFID systems. In large-scale, especially densely deployed RFID systems, identifying and closing redundant readers can reduce the energy consumption of the RFID system, optimize system deployment, and reduce the amount of tag data that the system needs ...

AI Technical Summary

Problems solved by technology

However, the chip characteristics of RFID tags determine that the reader needs to consume more power when writing information to the tag, so the writing distance of the reader is generally smaller than its reading distance

The working characteristics of the reader’s unequal reading and writing distance to the tag will cause the redundant reader to be missed and misjudged by the de-redundancy algorithm, thus making it impossible to ensure that the system can read all the tag information

Therefore, various reader de-redundancy algorithms that require the reader to write "lock" information to the tag, such as RRE, LEO, etc., are unreliable in the actual application environment

In addition, in large-scale, especially in wireless communication RFID systems, the resources of readers and tags are generally limited, and the reader's multiple reading and writing of tags and the redundant discrimination function of the reader will increase the burden on the system.

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