A tag identification method and system suitable for large-scale RFID and handheld devices

Abstract

A label identification method and system applied to a large-scale RFID and a handheld device are provided. The state of time slot in the identification process is classified into the three types of idling, success and collision. The label identification method comprises the following steps: 1, when the first round of identification starts, all working labels are identified as one group, a reader records information of the identified labels and enables the labels to sleep through an instruction, and the information is correspondingly processed according to the collision rate C2,1; 2, the kth round of identification is conducted, wherein after all the label groups are identified, a card reader records the information of the identified labels and enables the labels to sleep through an instruction, then the unidentified labels are processed according to the collision rate C2,k; 3, the identification ending condition is that when all the label groups are hollow, identification is finished. The invention further provides a label identification system applied to the large-scale RFID and the handheld device. The label identification method and system applied to large-scale RFID and the handheld device are effectively applied to large-scale places, stability is good, and computation complexity is low.

Description

technical field [0001] The invention relates to the field of RFID systems, in particular to a large-scale RFID and a tag identification method and system for handheld devices. Background technique [0002] An RFID system usually consists of RFID readers and numerous RFID tags. The RFID reader communicates with the electronic tag attached to the object through radio frequency radio to read the unique ID number in it, and then identify the object. Because all RFID tags share a wireless channel, within the working range of the RFID system, there are often two or more electronic tags trying to communicate with the same reader at the same time, resulting in collisions. In order to avoid collisions, anti-collision algorithms are proposed and widely used in practical systems. [0003] When the number of RFID tags is large, frequent collisions will seriously affect the normal operation of the reader, greatly reducing the efficiency of the reader to identify tags, so that it takes ...

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the shortcomings of the existing RFID system tag identification technology that cannot be applied to large-scale occasions, poor stability, and high computational complexity, the present invention provides an effective and suitable for large-scale occasions, good stability, and computational Tag recognition method and system suitable for large-scale RFID and handheld devices with low complexity

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