KR20090075365A - 태그 인식 방법, 충돌 방지 방법 및 이를 이용한 rfid태그 - Google Patents
태그 인식 방법, 충돌 방지 방법 및 이를 이용한 rfid태그 Download PDFInfo
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- KR20090075365A KR20090075365A KR1020080001198A KR20080001198A KR20090075365A KR 20090075365 A KR20090075365 A KR 20090075365A KR 1020080001198 A KR1020080001198 A KR 1020080001198A KR 20080001198 A KR20080001198 A KR 20080001198A KR 20090075365 A KR20090075365 A KR 20090075365A
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- Prior art keywords
- tag
- query
- rfid reader
- string
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000010586 diagram Methods 0.000 description 12
- 230000005540 biological transmission Effects 0.000 description 10
- 238000004891 communication Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 8
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/40—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by components specially adapted for near-field transmission
- H04B5/48—Transceivers
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/0008—General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10019—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers.
- G06K7/10029—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers. the collision being resolved in the time domain, e.g. using binary tree search or RFID responses allocated to a random time slot
- G06K7/10039—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers. the collision being resolved in the time domain, e.g. using binary tree search or RFID responses allocated to a random time slot interrogator driven, i.e. synchronous
- G06K7/10049—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers. the collision being resolved in the time domain, e.g. using binary tree search or RFID responses allocated to a random time slot interrogator driven, i.e. synchronous binary tree
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
- H04W74/0841—Random access procedures, e.g. with 4-step access with collision treatment
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Artificial Intelligence (AREA)
- Toxicology (AREA)
- Health & Medical Sciences (AREA)
- Computer Networks & Wireless Communication (AREA)
- Electromagnetism (AREA)
- General Health & Medical Sciences (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Signal Processing (AREA)
- Near-Field Transmission Systems (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Round | Step | Query | Response |
1 R | 1 | 0 | collision |
2 | 1 | no response | |
2 R | 3 | 00 | no response |
4 | 01 | collision | |
3 R | 5 | 010 | collision |
6 | 011 | collision | |
4 R | 7 | 0100 | 01001 |
8 | 0101 | collision | |
9 | 0110 | collision | |
10 | 0111 | no response | |
5 R | 11 | 01010 | 01010 |
12 | 01011 | 01011 | |
13 | 01100 | 01100 | |
14 | 01101 | 01101 |
Round | Step | Query | Response |
1 R | 1 | 0 | collision |
2 | 1 | collision | |
2 R | 3 | 00 | 01100 |
4 | 01 | 01010 | |
5 | 10 | collision | |
6 | 11 | 01011 | |
3 R | 7 | 100 | 01001 |
8 | 101 | 01101 |
*** Reversed Query Tree Protocol : Reader Pseudo-code *** Q = {'0', '1'} while (Q is not empty) : suffix = pop a suffix from Q send QUERY command to tags with suffix reply = receive reply from tags if (reply is identified) : # a tag is identified else if (reply is collision) : append (suffix ∥ '0') to Q append (suffix ∥ '1') to Q end if end while *** Reversed Query Tree Protocol : Tag Pseudo-code *** suffix = receive suffix from reader if (reversed ID starts with suffix) : return ID end if |
Claims (9)
- RFID 리더와 태그 간의 질의응답에 따라 쿼리 트리를 생성하여 상기 태그를 인식하는 태그 인식 방법에 있어서,상기 RFID 리더가 상기 태그로 질의 메시지를 전송하는 단계; 및상기 태그로부터 상기 질의 메시지에 대한 응답 메시지를 수신하는 단계를 포함하되, 상기 태그가 가지는 문자열(string)의 역순으로 상기 쿼리 트리를 생성하는 태그 인식 방법.
- 제1 항에 있어서, 상기 질의 메시지는 상기 문자열의 서프픽스(suffix)인 것을 특징으로 하는 태그 인식 방법.
- 제2 항에 있어서, 상기 응답 메시지가 다른 태그로부터의 응답 메시지와 충돌이 발생하면, 상기 RFID 리더는 상기 서프픽스에 추가 문자를 붙인 문자열을 큐(queue)에 생성시키는 것을 특징으로 하는 태그 인식 방법.
- 제1 항에 있어서, 상기 태그는 상기 문자열의 LSB(least significant bit)부 터 MSB(most significant bit)로의 순으로 상기 질의 메시지와 상기 문자열을 비교하여 상기 응답 메시지를 전송하는 것을 특징으로 하는 태그 인식 방법.
- 제1 항에 있어서, 상기 태그는 자신의 ID(identifier)에 대한 역순 ID를 생성하여 상기 질의 메시지와 비교하는 것을 특징으로 하는 태그 인식 방법.
- 태그 간의 충돌을 방지하기 위한 충돌 방지 방법에 있어서,태그가 RFID 리더로부터 제1 서프픽스를 수신하는 단계;상기 제1 서프픽스를 상기 태그의 ID와 역순으로 비교하여 제1 응답 메시지를 전송하는 단계;상기 제1 응답 메시지를 전송한 후, 상기 제1 서프픽스보다 길이가 긴 제2 서프픽스를 수신하는 단계; 및상기 제2 서프픽스를 상기 태그의 ID와 역순으로 비교하여 제2 응답 메시지를 전송하는 단계를 포함하는 RFID 시스템에서 충돌 방지 방법.
- 제6 항에 있어서, 상기 제1 서프픽스는 상기 태그의 ID의 LSB로부터 m번째 비트까지의 문자열이고, 상기 제2 서프픽스는 상기 태그의 ID의 LSB로부터 n번째 비트까지의 문자열인 것을 특징으로 하는 RFID 시스템에서 충돌 방지 방법(n > m 이고, n, m > 0인 정수).
- 쿼리 트리 프로토콜을 이용하는 RFID 리더로부터의 질의에 대하여 응답하는 RFID 태그에 있어서,상기 RFID 리더로부터의 질의 메시지를 수신하여 복조하는 복조부;상기 질의 메시지에 포함된 문자열과 태그 ID를 역순으로 비교하여 일치하면 응답 메시지를 생성하는 제어부; 및상기 응답 메시지를 변조하여 전송하는 변조부를 포함하는 것을 특징으로 하는 RFID 태그.
- 제8 항에 있어서, 상기 응답 메시지는 상기 태그 ID 인 것을 특징으로 하는 RFID 태그.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020080001198A KR100936893B1 (ko) | 2008-01-04 | 2008-01-04 | 태그 인식 방법, 충돌 방지 방법 및 이를 이용한 rfid태그 |
US12/443,207 US20100182128A1 (en) | 2008-01-04 | 2008-10-16 | Tag identification method, tag anticollision method, rfid tag |
CN200880001068A CN101743697A (zh) | 2008-01-04 | 2008-10-16 | 标签识别方法、标签防冲突方法及射频识别标签 |
PCT/KR2008/006094 WO2009088153A1 (en) | 2008-01-04 | 2008-10-16 | Tag identification method, tag anti-collision method, rfid tag |
JP2009549014A JP2010507877A (ja) | 2008-01-04 | 2008-10-16 | タグを認識する方法及びこれを用いたrfidタグ |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020080001198A KR100936893B1 (ko) | 2008-01-04 | 2008-01-04 | 태그 인식 방법, 충돌 방지 방법 및 이를 이용한 rfid태그 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20090075365A true KR20090075365A (ko) | 2009-07-08 |
KR100936893B1 KR100936893B1 (ko) | 2010-01-14 |
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Application Number | Title | Priority Date | Filing Date |
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KR1020080001198A KR100936893B1 (ko) | 2008-01-04 | 2008-01-04 | 태그 인식 방법, 충돌 방지 방법 및 이를 이용한 rfid태그 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20100182128A1 (ko) |
JP (1) | JP2010507877A (ko) |
KR (1) | KR100936893B1 (ko) |
CN (1) | CN101743697A (ko) |
WO (1) | WO2009088153A1 (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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KR101521262B1 (ko) * | 2014-03-31 | 2015-06-01 | 대전대학교 산학협력단 | Rfid 태그, rfid 태그 리더, 이들을 포함하는 rfid 태그 인식 시스템 및 그 제공방법 |
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KR101059872B1 (ko) * | 2005-01-03 | 2011-08-29 | 삼성전자주식회사 | 고유 식별자를 이용한 통신충돌방지 프로토콜 |
US8854190B2 (en) * | 2010-12-24 | 2014-10-07 | Assetpulse, Llc | Systems and methods to detect cross reads in RFID tags |
KR101206410B1 (ko) | 2011-06-30 | 2012-11-29 | 한국과학기술원 | Rfid 시스템에서 트리 기반의 태그 인식 방법 |
EP2764705A4 (en) * | 2011-10-05 | 2015-05-06 | Checkpoint Systems Inc | COMMISSIONING MULTI-FREQUENCY BULK RADIO FREQUENCY IDENTIFICATION TAG (RFID) |
CN102663333B (zh) * | 2011-12-18 | 2014-06-11 | 西北工业大学 | 一种rfid系统中基于自适应混合查询树的标签防碰撞方法 |
US9129455B2 (en) | 2012-02-21 | 2015-09-08 | Fca Us Llc | System and method to enable passive entry |
CN103577783A (zh) * | 2013-11-25 | 2014-02-12 | 北京邮电大学 | 一种高效rfid自适应型防碰撞跟踪树算法 |
CN103761548B (zh) * | 2013-12-31 | 2016-08-24 | 电子科技大学 | 一种有源rfid标签信息交互方法 |
US10275961B2 (en) * | 2014-02-14 | 2019-04-30 | GM Global Technology Operations LLC | Method for optimizing anti-collision and latency for PEPS passive response |
CN105095929A (zh) * | 2014-05-23 | 2015-11-25 | 中兴通讯股份有限公司 | 无源射频识别标签、光学射频读写头及射频识别系统 |
CN105095928A (zh) * | 2014-05-23 | 2015-11-25 | 中兴通讯股份有限公司 | 无源射频识别标签、射频读写头及射频识别系统 |
CN105095943A (zh) * | 2014-05-23 | 2015-11-25 | 中兴通讯股份有限公司 | 反射式无源光学标签、光读写装置及智能光分配网络 |
CN104200246B (zh) * | 2014-08-13 | 2017-10-17 | 北京邮电大学 | 分组n叉跟踪树型rfid防碰撞算法 |
CN106407860B (zh) * | 2016-08-31 | 2019-03-08 | 广州地理研究所 | 多卡识别的防冲突方法及装置 |
CN110366441B (zh) | 2017-03-06 | 2022-06-28 | 康明斯滤清系统知识产权公司 | 具有过滤器监控系统的原装过滤器识别 |
CN108491741B (zh) * | 2018-03-12 | 2020-12-29 | 吉林大学 | 一种基于四叉树的位仲裁查询树防碰撞方法 |
CN115379026B (zh) * | 2022-04-19 | 2024-01-19 | 国家计算机网络与信息安全管理中心 | 一种报文头域的识别方法、装置、设备及存储介质 |
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KR100842958B1 (ko) * | 2006-10-19 | 2008-07-01 | 한국정보통신대학교 산학협력단 | Rfid 시스템의 쿼리 트리 기반 태그 인식 방법 |
-
2008
- 2008-01-04 KR KR1020080001198A patent/KR100936893B1/ko active IP Right Grant
- 2008-10-16 JP JP2009549014A patent/JP2010507877A/ja active Pending
- 2008-10-16 WO PCT/KR2008/006094 patent/WO2009088153A1/en active Application Filing
- 2008-10-16 US US12/443,207 patent/US20100182128A1/en not_active Abandoned
- 2008-10-16 CN CN200880001068A patent/CN101743697A/zh active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101521262B1 (ko) * | 2014-03-31 | 2015-06-01 | 대전대학교 산학협력단 | Rfid 태그, rfid 태그 리더, 이들을 포함하는 rfid 태그 인식 시스템 및 그 제공방법 |
Also Published As
Publication number | Publication date |
---|---|
KR100936893B1 (ko) | 2010-01-14 |
JP2010507877A (ja) | 2010-03-11 |
US20100182128A1 (en) | 2010-07-22 |
WO2009088153A1 (en) | 2009-07-16 |
CN101743697A (zh) | 2010-06-16 |
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