CN103226685A - Method for improving radio frequency identification (RFID) tag reading success rate - Google Patents
Method for improving radio frequency identification (RFID) tag reading success rate Download PDFInfo
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- CN103226685A CN103226685A CN2013101706864A CN201310170686A CN103226685A CN 103226685 A CN103226685 A CN 103226685A CN 2013101706864 A CN2013101706864 A CN 2013101706864A CN 201310170686 A CN201310170686 A CN 201310170686A CN 103226685 A CN103226685 A CN 103226685A
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Abstract
The invention relates to a method for improving RFID tag reading success rate, used for quickly reading and writing a large quantity of tags in the internet of things and belonging to the technical field of radio frequency identification (RFID) tag reading and writing. The method is mainly used for solving the problem of low tag reading success rate and low reading efficiency under the influence of noise interference and signal distortion when the RFID tags are quickly read in the application of the internet of things. According to the method, tag data read from the tags are corrected by encoding and coding error correcting codes, so that the tag reading efficiency and the system stability of the internet of things are improved, and the coverage area of a reader is improved. In addition, the invention provides two different implementation ways, one is to integrate an electronic error correction coding module in a tag, and the other one is to apply the electronic error correction coding module to the existing tag directly, and write electronic error correction codes into a tag storage area together with tag data by a reader-writer or a terminal system when tag data is written in.
Description
Technical field
The present invention relates to the RFID(radio-frequency (RF) identification) the label read-write, relate in particular to the method that a kind of RFID of raising label reads success ratio, be applicable to that Internet of Things needs a large amount of labels of fast reading and writing, belong to radio-frequency (RF) tag read-write technical field.
Technical field
The present invention relates to the RFID(radio-frequency (RF) identification) the label read-write, relate in particular to the method that a kind of RFID of raising label reads success ratio, be applicable to that Internet of Things needs a large amount of labels of fast reading and writing, belong to radio-frequency (RF) tag read-write technical field.
Background technology
Internet of Things (Internet of things) is the important trend of present information networking development, is called as computing machine, the internet third wave of world's information industry afterwards, and radio RF recognition technology RFID is one of Internet of Things gordian technique.The RFID technology is a kind of contactless automatic identification technology, it is by the automatic recognition objective object of radiofrequency signal and obtain related data, but, distance strong, long service life, good environmental adaptability with its identification radio read-write, signal penetration capacity, can many labels discern simultaneously, information stores is big easily and data such as can rewrite at advantage, be used widely in recent years.
The read-write of existing RFID label is during by the reader identification label, earlier the tag reflection data that receive is carried out CRC check, if the verification failure, then reader requests label data retransmission is successfully discerned up to label.Because the signal of tag reflection is very faint usually, be vulnerable to the influence of noise and distorted signals, cause label to read success ratio and descend system performance degradation.
Background technology
Internet of Things (Internet of things) is the important trend of present information networking development, is called as computing machine, the internet third wave of world's information industry afterwards, and radio RF recognition technology RFID is one of Internet of Things gordian technique.The RFID technology is a kind of contactless automatic identification technology, it is by the automatic recognition objective object of radiofrequency signal and obtain related data, but, distance strong, long service life, good environmental adaptability with its identification radio read-write, signal penetration capacity, can many labels discern simultaneously, information stores is big easily and data such as can rewrite at advantage, be used widely in recent years.
The read-write of existing RFID label is during by the reader identification label, earlier the tag reflection data that receive is carried out CRC check, if the verification failure, then reader requests label data retransmission is successfully discerned up to label.Because the signal of tag reflection is very faint usually, be vulnerable to the influence of noise and distorted signals, cause label to read success ratio and descend system performance degradation.
Summary of the invention
The purpose of this invention is to provide the method that a kind of RFID of raising label reads success ratio, read the bit error rate problem of higher because of caused by noise and distorted signals in the process in order to reduce the RFID label, reduce the repeating transmission probability of label data by the present invention, improve label and read success ratio.
The objective of the invention is to be achieved through the following technical solutions, a kind of RFID of raising label reads the method for success ratio, comprise RFID label, reader and back-end code system, it is characterized in that, use error correcting code and provide the correcting data error protection the tag reflection data sequence, reduce the repeating transmission probability of label data, improve label and read success ratio; Error correcting system comprises PC/XPC+EPC+CRC-PC/XPC+EPC+CRC+ECC.
Described error correcting code is used common BCH code, convolutional code or LDPC sign indicating number.
The error correcting code generating mode, can be in label integrated error correcting code circuitry; Also can write label data such as PC+EPC+CRC simultaneously, write by back-end code system, host computer or reader and pass through the corresponding error correcting code coded data of software or hardware generation to the tag storage district to there not being the label of integrated error correcting code circuitry.
Error decoding circuit that the read write line side is integrated or software algorithm, read in the process at label data, simultaneously the error correcting code that reads is decoded,, finish the last affirmation of data correctness at last by the CRC check module to proofread and correct the data read errors of producing at random.
The present invention provides the correcting data error protection by using error correcting code to the tag reflection data sequence; reduce the repeating transmission probability of label data; be no more than error correcting code error correction scope for error code number; reader just can be corrected; the not correctable error that has only continuous a plurality of error code to cause is just found by CRC school sign indicating number, and requires to retransmit; this has just significantly reduced the number of times that same label is retransmitted, and has improved label reading efficiency (checking and replenish the positive technique effect that adopts the technical program to bring) greatly.
The present invention provides the correcting data error protection by using error correcting code to the tag reflection data sequence; reduce the repeating transmission probability of label data; be no more than error correcting code error correction scope for error code number; reader just can be corrected; the not correctable error that has only continuous a plurality of error code to cause is just found by CRC school sign indicating number, and requires to retransmit; this has just significantly reduced the number of times that same label is retransmitted, and has improved label reading efficiency (checking and replenish the positive technique effect that adopts the technical program to bring) greatly.
Description of drawings
Fig. 1 is the electronic label read-write work block diagram of band Error Correction of Coding module among the present invention;
Fig. 2 among the present invention not with the electronic label read-write work block diagram of Error Correction of Coding module.
Description of drawings
Fig. 1 is the electronic label read-write work block diagram of band Error Correction of Coding module among the present invention;
Fig. 2 among the present invention not with the electronic label read-write work block diagram of Error Correction of Coding module.
Embodiment
Further specify the present invention in conjunction with the accompanying drawings and embodiments, as shown in Figure 1, integrated corresponding error correcting code circuitry in the label of the present invention, simultaneously, then integrated corresponding error decoding circuit of reader or software.As shown in Figure 2,, then generate by software or hardware, when writing label data, write the tag storage district then together at back-end code system, host computer or reader because of not having error correcting code circuitry in the label of the present invention.
The workflow of reading of data is: label data adds check code by the CRC circuit earlier, carry out then sending it back in the read write line (to there not being the label of error correcting code circuitry behind the error correcting code circuitry coding, directly send the error correction encoded data of memory block stored), comprise PC (Protocol Control so send back the data of read write line, the agreement control data), EPC(Electronic Product Code, the electronic article sign indicating number), CRC(Cyclical Redundancy Check, cyclic check code) and the extra ECC(Error Correcting Code that increases of this invention, electronics Error Correction of Coding).Reader carries out the ECC error correction decode earlier to be handled, and to correct some wrong data, whether carrying out CRC check then, to check the PC+EPC sign indicating number correct, confirms whether data are correct.
Error correcting code of the present invention can be used common BCH code, convolutional code or LDPC sign indicating number.
Claims (4)
1. one kind is improved the method that the RFID label reads success ratio, comprise RFID label, reader and back-end code system, it is characterized in that, use error correcting code and provide the correcting data error protection the tag reflection data sequence, reduce the repeating transmission probability of label data, improve label and read success ratio; Error correcting system comprises PC/XPC+EPC+CRC-PC/XPC+EPC+CRC+ECC.
2. raising RFID label according to claim 1 reads the method for success ratio, it is characterized in that described error correcting code is used BCH code, convolutional code or LDPC sign indicating number.
3. raising according to claim 1 RFID label reads the method for success ratio, it is characterized in that, the error correcting code generating mode, can be in label integrated error correcting code circuitry; Also can write label data such as PC+EPC+CRC simultaneously, write by back-end code system, host computer or reader and pass through the corresponding error correcting code coded data of software or hardware generation to the tag storage district to there not being the label of integrated error correcting code circuitry.
4. raising RFID label according to claim 1 reads the method for success ratio, it is characterized in that, error decoding circuit that the read write line side is integrated or software algorithm, read in the process at label data, simultaneously the error correcting code that reads is decoded, to proofread and correct the data read errors of producing at random, finish the last affirmation of data correctness at last by the CRC check module.
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| CN2013101706864A CN103226685A (en) | 2013-05-10 | 2013-05-10 | Method for improving radio frequency identification (RFID) tag reading success rate |
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| CN2013101706864A CN103226685A (en) | 2013-05-10 | 2013-05-10 | Method for improving radio frequency identification (RFID) tag reading success rate |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107045643A (en) * | 2016-12-30 | 2017-08-15 | 南京理工大学 | The high secrecy ultrahigh frequency RFID system perceived suitable for ITS Information |
| CN108734038A (en) * | 2017-04-14 | 2018-11-02 | 恩智浦有限公司 | Rfid integrated circuits |
| CN113033224A (en) * | 2019-12-25 | 2021-06-25 | 菜鸟智能物流控股有限公司 | Radio frequency tag reading and writing device and radio frequency tag reading and writing method |
| CN113099513A (en) * | 2021-03-29 | 2021-07-09 | 努比亚技术有限公司 | Base station selection method, electronic terminal and computer readable storage medium |
| CN113420577A (en) * | 2021-07-21 | 2021-09-21 | 红云红河烟草(集团)有限责任公司 | Automatic identification method for raw tobacco frame basket based on vehicle-mounted RFID reader |
| CN115361096A (en) * | 2022-10-19 | 2022-11-18 | 无锡沐创集成电路设计有限公司 | RFID tag circuit and data transmission method based on RFID tag circuit |
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| US20070200686A1 (en) * | 2006-02-13 | 2007-08-30 | Samsung Electronics., Ltd. | Method and system for improving function of reading information from RFID tag |
| CN101441703A (en) * | 2008-10-08 | 2009-05-27 | 湖南大学 | Coding and decoding circuit of super high frequency radio frequency personal identification system |
| CN101655902A (en) * | 2008-08-21 | 2010-02-24 | Sap股份公司 | Radio frequency identification reading by using error correcting codes on sets of tags |
| CN101957923A (en) * | 2009-07-20 | 2011-01-26 | 西门子公司 | Method and reader for reading data from tags in radio frequency identification system |
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| US20070200686A1 (en) * | 2006-02-13 | 2007-08-30 | Samsung Electronics., Ltd. | Method and system for improving function of reading information from RFID tag |
| CN101655902A (en) * | 2008-08-21 | 2010-02-24 | Sap股份公司 | Radio frequency identification reading by using error correcting codes on sets of tags |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107045643A (en) * | 2016-12-30 | 2017-08-15 | 南京理工大学 | The high secrecy ultrahigh frequency RFID system perceived suitable for ITS Information |
| CN108734038A (en) * | 2017-04-14 | 2018-11-02 | 恩智浦有限公司 | Rfid integrated circuits |
| CN108734038B (en) * | 2017-04-14 | 2023-11-10 | 恩智浦有限公司 | Integrated circuit for RFID tag |
| CN113033224A (en) * | 2019-12-25 | 2021-06-25 | 菜鸟智能物流控股有限公司 | Radio frequency tag reading and writing device and radio frequency tag reading and writing method |
| CN113099513A (en) * | 2021-03-29 | 2021-07-09 | 努比亚技术有限公司 | Base station selection method, electronic terminal and computer readable storage medium |
| CN113099513B (en) * | 2021-03-29 | 2023-12-08 | 深圳市中兴移动软件有限公司 | Base station selection method, electronic terminal and computer readable storage medium |
| CN113420577A (en) * | 2021-07-21 | 2021-09-21 | 红云红河烟草(集团)有限责任公司 | Automatic identification method for raw tobacco frame basket based on vehicle-mounted RFID reader |
| CN115361096A (en) * | 2022-10-19 | 2022-11-18 | 无锡沐创集成电路设计有限公司 | RFID tag circuit and data transmission method based on RFID tag circuit |
| CN115361096B (en) * | 2022-10-19 | 2022-12-20 | 无锡沐创集成电路设计有限公司 | RFID tag circuit and data transmission method based on RFID tag circuit |
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Effective date of registration: 20151225 Address after: 211400, No. 9, Tai Tai Road, Yizheng Economic Development Zone, Yizheng, Jiangsu, Yangzhou Applicant after: Zhi Kun (Jiangsu) Semiconductor Co., Ltd. Applicant after: SHANGHAI ZHIKUN SEMICONDUCTOR CO., LTD. Address before: 211400, No. 9, Tai Tai Road, Yizheng Economic Development Zone, Yizheng, Jiangsu, Yangzhou Applicant before: Zhi Kun (Jiangsu) Semiconductor Co., Ltd. |
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Application publication date: 20130731 |