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Tag and method for processing command by using same in RFID (radio frequency identification) system

A processing method and command technology, applied in the field of radio frequency identification, can solve the problems of long waiting time of Reader and affect the processing efficiency of the RFID system, and achieve the effect of improving processing efficiency and performance

Inactive Publication Date: 2011-04-27
SIEMENS CHINA
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  • Description
  • Claims
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Problems solved by technology

Usually, the response time of the Tag is much less than 20ms, so when the CRC verification of the command sent by the Reader to the Tag fails, the waiting time of the Reader is too long, which seriously affects the processing efficiency of the RFID system.

Method used

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  • Tag and method for processing command by using same in RFID (radio frequency identification) system
  • Tag and method for processing command by using same in RFID (radio frequency identification) system
  • Tag and method for processing command by using same in RFID (radio frequency identification) system

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Embodiment Construction

[0023] In order to make the purpose, technical solution and advantages of the present invention clearer, the invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] The embodiment of the present invention provides a Tag processing method for commands from the Reader. In this embodiment, the Tag is a Tag in the Open / Secure state. The realization process of Tag described in the embodiment of the present invention to the processing method of the order from Reader is as follows figure 1 As shown, it mainly includes:

[0025] Step 101: Receive a command from the Reader, and perform a CRC check on the received command.

[0026] In this embodiment, the command from the Reader may be a command such as Write, Kill, Lock, BlockWrite or BlockErase for modifying data or flags in the Tag.

[0027] Step 102: If the CRC check of the received command passes, execute step 103; otherwise, execute step 104.

[0028] Step 10...

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Abstract

The invention provides a tag and a method for processing a command by using the same. The method for processing the command by using the tag comprises the following steps: receiving the command from a reader by using the tag and carrying out CRC (cyclic redundancy check) on the received command; carrying out the operation which corresponds to the received command and feeding a response back to the reader if the received command passes the CRC; and discarding the received command and feeding a CRC failure response back to the reader if the received command does not pass the CRC. The reader can still receive the CRC failure response from the tag within 20 ms after the command is sent even if the command sent to the tag by the reader does not pass the CRC so as to stop sending CWs (continuous waves) in advance and send a new command to the tag in advance without waiting for 20 ms, thus the whole RFID system treatment efficiency and performance can be improved.

Description

technical field [0001] The present invention relates to the technical field of radio frequency identification (RFID, Radio Frequency Identification), in particular to a tag (Tag) processing method from a reader (Reader) in an RFID system and a Tag for realizing the method. Background technique [0002] In recent years, RFID technology has received more and more attention. Since hundreds of objects can be identified instantly through RFID technology, RFID technology can be applied to various application scenarios such as logistics or production. However, regardless of the application scenario, processing efficiency is always one of the important indicators to measure the performance of RFID systems. [0003] According to the agreement EPC Radio-Frequency Identity Protocols Class-1Generation-2UHF RFID Protocol for Communications at 860MHz-960MHz Version 1.0.9 (EPC Radio-Frequency Identification Protocol-Class 1 Generation-2 UHF RFID 860 MHz) established by EPC global organiza...

Claims

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Application Information

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IPC IPC(8): G06K17/00G06K19/07
CPCG06K7/0008G06K19/0723
Inventor 张亮郦辉袁勇
Owner SIEMENS CHINA
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