CN104853356B - A kind of NFC system intelligent identification Method - Google Patents
A kind of NFC system intelligent identification Method Download PDFInfo
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- CN104853356B CN104853356B CN201510249182.0A CN201510249182A CN104853356B CN 104853356 B CN104853356 B CN 104853356B CN 201510249182 A CN201510249182 A CN 201510249182A CN 104853356 B CN104853356 B CN 104853356B
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000004891 communication Methods 0.000 claims abstract description 23
- 238000012795 verification Methods 0.000 claims description 29
- 230000004044 response Effects 0.000 claims description 26
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/10—Integrity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
Abstract
The logical interference performed when sensing card concurrent communication more of the NFC system intelligent identification Method of the present invention eliminates, and the checking of integrality and correctness by performing NFC communication data, enhances interference free performance, improves recognition efficiency and accuracy.
Description
Technical field
The present invention relates to wireless communication field, more particularly to a kind of NFC system intelligent identification Method.
Background technology
Near-field communication (Near Field Communication, NFC) is a kind of radiotechnics of short distance high frequency,
13.56MHz frequencies are run in 20 cm distances, and its transmission speed has 106Kbit/ seconds, 212Kbit/ seconds or 424Kbit/
Three kinds of second, near-field communication is by as the international standards of ISO/IEC IS 18092, ECMA-340 standards and ETSI TS at present
102 190 standards.NFC is using actively and passively two kinds of read modes, NFC technology are identified by non-contact radio-frequency
And Technology Integration differentiation of interconnecting, combining induction card reader, icah wavw and point-to-point on one chip
Function, can be identified with compatible equipment and data exchange in short distance.
These characteristics based on NFC communication, still it there are problems that at present as follows：
(1) there is the possibility of recognition failures, and need to transmit larger data in a short time apart from short in NFC communication
Amount, exist how appraising datum integrality the problem of；
(2) when multiple NFC sensings cards in the read range of NFC reader be present, multiple sensing cards are simultaneously
Signal is transmitted, exists between signal and interferes, this can cause, and the response time of NFC reader is elongated, and real-time is poor, information
Security can also reduce.
Therefore, how to solve the above problems is the research emphasis of the present invention.
The content of the invention
The purpose of the present invention is achieved through the following technical solutions.
According to the embodiment of the present invention, a kind of NFC system intelligent identification Method is proposed, the system includes：NFC Card Readers
Device, NFC sensings card, intelligent terminal and verification terminal, the NFC sensings card are arranged on intelligent terminal, the NFC
Card reader is communicated between sensing card with NFC using NFC modes, and WLAN modes are used between the intelligent terminal and verification terminal
Communication, connected between the verification terminal and NFC reader using wired mode；Wherein, the recognition methods specifically includes：
S1, the NFC reader read the information in NFC sensing cards, and perform when sensing card concurrent communication more
Interference eliminates；
S2, the checking for performing the integrality and correctness of NFC communication data by verifying terminal and intelligent terminal.
According to the embodiment of the present invention, the NFC reader of the step S1 performs when sensing card concurrent communication more
Interference elimination specifically includes：
The length of the point-to-multipoint frame of frame time groove, and the length of channel code are arranged on access instruction by A1, NFC reader
In parameter, and access instruction is sent, starting first frame to multiple NFC sensings cards in radiofrequency field identifies；
A2, the length according to the channel code, each NFC sensings card one channel code identifier of generation, and looking at random
Ask the channel code that channel code record sheet determines to need；Each NFC sensing cards are to respective response identification data with the channel of oneself
Code is extended modulation, produces corresponding response signal；
A3, the NFC sense card under point-to-multipoint rule control, different frame time groove send response signal to
The NFC reader；
A4, the length according to described channel code, NFC reader queried channel code record sheet determine institute's channel in need
Extended code is solved, NFC sensing cards are accessed in a manner of frame time groove is point-to-multipoint, to one or more response signal solutions of reception
Expansion is handled, and carries out concurrent disturbance ecology, and meet with a response mark；
A5, the NFC reader send the determine instruction for including NFC contactless card piece response identifications, NFC sensing cards respectively
Receive the determine instruction being consistent with oneself identification number and be put into determination state, otherwise into judgement state；
A6, the NFC reader retransmit access instruction, if not including the identification for specifying NFC to sense card in parameter
Number, now all NFC sensings cards in determination state need to pass using foregoing each caused channel code to oneself
All data sent, which are extended, to be modulated and sends, and after having sent, NFC sensing cards return to initial state；If parameter
In comprising the identification number for specifying NFC to sense card, it is now all in determination state and the NFC that are consistent with specified identification number
Card is sensed using foregoing caused channel code, and all data for oneself needing to transmit are extended and modulates and sends, are sent out
After having sent, the NFC sensings card returns to initial state；
A7, the NFC reader judge whether current point-to-multipoint frame terminates, if so, then performing A9；
A8, the NFC reader, which are sent, continues access instruction, performs A3；
A9, the NFC reader, which are sent, accesses adjust instruction, performs the identification of next frame.
According to the embodiment of the present invention, the verification terminal of the step S2 performs the integrality and just of NFC communication data
The checking of true property specifically includes：
B1, NFC reader are after the data that NFC sensing cards are sent are received, according to type of service and tentation data form
It is pre- to judge whether received data is complete or correct, when above-mentioned NFC reader is to the integrality or correctness of the data of reception
When indicating " uncertain ", data check instruction is sent to verification terminal, and sent simultaneously to NFC sensing cards and start WLAN to hold
The request of row data check；
When B2, verification terminal receive the checking command of NFC reader, number of users is asked to intelligent terminal by WLAN
According to, after request described in the intelligent terminal for reception, the user data information in NFC sensing cards is directly read, after being encrypted,
Verification terminal is sent to by WLAN；
After B3, verification terminal receive the user data of intelligent terminal transmission and be decrypted, received with NFC reader
Data carry out the comparison of integrality and correctness, and comparison result is sent into NFC reader；
B4, the NFC reader decide whether to access NFC contactless cards again to obtain data according to verification comparison result.
The NFC system intelligent identification Method of the present invention is eliminated by interference when performing more sensing card concurrent communications, with
And the checking of the integrality and correctness of NFC communication data, interference free performance is enhanced, improves recognition efficiency and accuracy.
Brief description of the drawings
By reading the detailed description of hereafter preferred embodiment, it is various other the advantages of and benefit it is common for this area
Technical staff will be clear understanding.Accompanying drawing is only used for showing the purpose of preferred embodiment, and is not considered as to the present invention
Limitation.And in whole accompanying drawing, identical part is denoted by the same reference numerals.In the accompanying drawings：
Accompanying drawing 1 shows the NFC system structural representation according to embodiment of the present invention；
Accompanying drawing 2 shows the NFC system intelligent identification Method flow chart according to embodiment of the present invention.
Embodiment
The illustrative embodiments of the disclosure are more fully described below with reference to accompanying drawings.Although this public affairs is shown in accompanying drawing
The illustrative embodiments opened, it being understood, however, that may be realized in various forms the disclosure without the reality that should be illustrated here
The mode of applying is limited.Conversely, there is provided these embodiments are to be able to be best understood from the disclosure, and can be by this public affairs
The scope opened completely is communicated to those skilled in the art.
According to the embodiment of the present invention, a kind of NFC system intelligent identification Method, as shown in Figure 1, the system are proposed
Including：NFC reader, NFC sensings card, intelligent terminal and verification terminal, the NFC sensings card are arranged at intelligent end
On end, the NFC reader is communicated between sensing card with NFC using NFC modes, between the intelligent terminal and verification terminal
Communicated using WLAN modes, connected between the verification terminal and NFC reader using wired mode；Wherein, the identification side
Method specifically includes, as shown in Figure 2：
S1, the NFC reader read the information in NFC sensing cards, and perform when sensing card concurrent communication more
Interference eliminates；
S2, the checking for performing the integrality and correctness of NFC communication data by verifying terminal and intelligent terminal.
According to the embodiment of the present invention, the NFC reader of the step S1 performs when sensing card concurrent communication more
Interference elimination specifically includes：
The length of the point-to-multipoint frame of frame time groove, and the length of channel code are arranged on access instruction by A1, NFC reader
In parameter, and access instruction is sent, starting first frame to multiple NFC sensings cards in radiofrequency field identifies；
A2, the length according to the channel code, each NFC sensings card one channel code identifier of generation, and looking at random
Ask the channel code that channel code record sheet determines to need；Each NFC sensing cards are to respective response identification data with the channel of oneself
Code is extended modulation, produces corresponding response signal；
A3, the NFC sense card under point-to-multipoint rule control, different frame time groove send response signal to
The NFC reader；For example, NFC senses card 1 in the 0th time slot, NFC senses card 4,5,6 in the 1st time slot,
NFC senses card 2,3 and sends response signal in the 5th time slot.
A4, the length according to described channel code, NFC reader queried channel code record sheet determine institute's channel in need
Extended code is solved, NFC sensing cards are accessed in a manner of frame time groove is point-to-multipoint, to one or more response signal solutions of reception
Expansion is handled, and carries out concurrent disturbance ecology, and meet with a response mark；For example, in first frame, the NFC sensing time slot quilts of card 1 the 0th
Identification, NFC sensing cards 2,3 are gone out in the 5th time slot by NFC reader parallelism recognition, and NFC senses card 4,5,6 due to occurring
Concurrently interference can not be identified, and continue to identify in the next frame.
A5, the NFC reader send the determine instruction for including the NFC sensing response identifications of card 1,2,3, NFC senses respectively
Answer card 1,2,3 to receive the determine instruction being consistent with oneself identification number and be put into determination state, otherwise into judgement state；
A6, the NFC reader retransmit access instruction, if not including the identification for specifying NFC to sense card in parameter
Number, now all NFC sensings cards (for example, NFC senses card 1,2,3) in determination state are using foregoing each self-produced
Raw channel code, all data for oneself needing to transmit are extended and modulates and sends, after having sent, NFC sensing cards
(for example, NFC senses card 1,2,3) returns to initial state；If the identifier for specifying NFC to sense card is included in parameter
Code, now all NFC sensings cards for being in determination state and being consistent with specified identification number are using foregoing caused channel
Code, all data for oneself needing to transmit are extended and modulates and sends, after having sent, the NFC sensings card returns
To initial state；
A7, the NFC reader judge whether current point-to-multipoint frame terminates, if so, then performing A9；
A8, the NFC reader, which are sent, continues access instruction, performs A3；
A9, the NFC reader, which are sent, accesses adjust instruction, performs the identification of next frame；For example, the NFC reader
Identify that NFC senses card 4 in the 2nd frame by same principle, and identify that NFC senses card 5 and 6 in the 3rd frame.
According to the embodiment of the present invention, the verification terminal of the step S2 performs the integrality and just of NFC communication data
The checking of true property specifically includes：
B1, NFC reader are after the data that NFC sensing cards are sent are received, according to type of service and tentation data form
It is pre- to judge whether received data is complete or correct, when above-mentioned NFC reader is to the integrality or correctness of the data of reception
When indicating " uncertain ", data check instruction is sent to verification terminal, and sent simultaneously to NFC sensing cards and start WLAN to hold
The request of row data check；
When B2, verification terminal receive the checking command of NFC reader, number of users is asked to intelligent terminal by WLAN
According to, after request described in the intelligent terminal for reception, the user data information in NFC sensing cards is directly read, after being encrypted,
Verification terminal is sent to by WLAN；
After B3, verification terminal receive the user data of intelligent terminal transmission and be decrypted, received with NFC reader
Data carry out the comparison of integrality and correctness, and comparison result is sent into NFC reader；
B4, the NFC reader decide whether to access NFC contactless cards again to obtain data according to verification comparison result.
According to the embodiment of the present invention, after the NFC sensings card receives the access instruction of NFC reader, perform
Following operation：
C1, the NFC sense card and receive NFC reader access instruction from initial state, and obtain in access instruction and wrap
The length of the point-to-multipoint frame of frame time groove and the length parameter of channel code contained, then produce two random integers：It is point-to-multipoint
Frame time groove random number, response letter is sent for randomly choosing a time slot in the point-to-multipoint regular frame of frame time groove
Number；Another is channel code identifier, for the channel code for determining to need in channel code record sheet；
C2, the NFC sense card proving time slot number evidence under the point-to-multipoint rule control of frame time groove, and selection is sent
Respond or without response；Before response, NFC sensing cards carry out delay modulation, data is turned into bipolar code, then using determination
Channel code is extended modulation to sent mark data, then by carrier modulation and is sent to NFC reader, NFC sensings
Card waits the determine instruction of NFC reader；NFC sensings card only refers to receiving the determination comprising the mark data of itself
Enter determination state after order, otherwise into judgement state, to wait continuing to access or accessing adjust instruction for NFC reader, NFC
Sensing card receives continuation access instruction time frame time slot number and subtracts one, or NFC sensing cards receive access adjustment or visited
Frame time slot number is regenerated when asking instruction, data are just sent when only frame time slot number is zero；
, will after C3, the NFC sensing cards in the state of determination receive the effective access instruction of NFC reader transmission
NFC reader is sent to after the expanded modulation of data needed, returns to initial state.
According to the embodiment of the present invention, the NFC reader concrete operations are as follows：
D1, the NFC reader choose the length and channel code of frame time groove point-to-multipoint frame since initial state
Length data is simultaneously arranged in the parameter of access instruction, then sends access instruction to all NFC contactless cards in radiofrequency field
Piece, start a radio frequency identification；
D2, under the point-to-multipoint rule control of frame time groove, if NFC reader receive NFC sensing card return letter
After number, determine that institute's channel solution extended code in need docks the response received according to the length M queried channel codes record sheet of channel code
Signal carries out correlation demodulation, and now, if not occurring concurrently to disturb, i.e., no more than two NFC sense card same
Same channel code is generated in time slot, NFC reader can identify the mark data of all NFC sensing cards；Or hair
Give birth to and concurrently disturbed, that is, there are two or more NFC sensing cards to generate same channel code, NFC in same time slot
Card reader remains able to identify the mark data of other all NFC sensing cards that code collision does not occur；
D3, the NFC reader send determine instruction one by one for all identified NFC sensing cards, in instruction
Comprising the mark data for responding NFC sensing cards, NFC reader continues to send access instruction, does not include in parameter and specifies NFC to feel
The mark data of card is answered, now all NFC sensing cards in determination state are right all using foregoing caused channel code
All data for oneself needing to transmit, which are extended, to be modulated and sends；Or the mark number for specifying NFC to sense card is included in parameter
According to the NFC for being now only in determination state and being consistent with access instruction parameter identification data senses card by aforementioned mechanism
Returned data, the mark data that NFC reader changes in parameter can sequentially read different NFC sensing card datas.
D4, NFC reader judge whether current point-to-multipoint frame terminates, if this frame does not terminate, NFC reader, which is sent, to be continued
Access instruction, and wait the response of NFC sensing cards；If this frame terminate, NFC reader estimation it is unidentified go out NFC contactless cards
The quantity of piece, if still there is NFC sensings card to be identified, using estimate it is unidentified go out NFC sense number of cards weight
The length of the new length and channel code for determining the point-to-multipoint frame of frame time groove, is arranged in the parameter for accessing adjust instruction, then
Send and access adjust instruction, wait the response of NFC sensing cards, if all having identified, NFC reader returns to initial state.
D5, when NFC reader to nfc card piece identify after, select by verifying terminal initiated access data integrity
With the checking of correctness, and according to verification comparison result decide whether to access NFC contactless cards again to obtain data.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can readily occur in,
It should all be included within the scope of the present invention.Therefore, protection scope of the present invention should the protection model with claim
Enclose and be defined.
Claims (2)
1. a kind of NFC system intelligent identification Method, the system include：NFC reader, NFC sensing card, intelligent terminal, with
And verification terminal, the NFC sensings card are arranged on intelligent terminal, are used between NFC reader and NFC the sensing card
NFC modes communicate, and are communicated between the intelligent terminal and verification terminal using WLAN modes, the verification terminal and NFC Card Readers
Connected between device using wired mode；Wherein, the recognition methods specifically includes：
S1, the NFC reader read the information in NFC sensing cards, and perform interference when sensing card concurrent communication more
Eliminate；
S2, the checking for performing the integrality and correctness of NFC communication data by verifying terminal and intelligent terminal；
The interference when NFC reader of the step S1 performs more sensing card concurrent communications, which eliminates, to be specifically included：
A1, NFC reader are by the length of the point-to-multipoint frame of frame time groove, and the length of channel code is arranged on the parameter of access instruction
In, and access instruction is sent, starting first frame to multiple NFC sensings cards in radiofrequency field identifies；
A2, the length according to the channel code, each NFC sensings card one channel code identifier of generation, and inquire about letter at random
Road code record sheet determines the channel code needed；Each NFC sensings card is entered to respective response identification data with the channel code of oneself
Row extension modulation, produces corresponding response signal；
A3, the NFC sense card under point-to-multipoint rule control, and response signal is sent to described in different frame time grooves
NFC reader；
A4, the length according to described channel code, NFC reader queried channel code record sheet determine institute's channel despreading in need
Code, NFC sensing cards are accessed in a manner of frame time groove is point-to-multipoint, at one or more response signal despreadings of reception
Reason, and concurrent disturbance ecology is carried out, meet with a response mark；
A5, the NFC reader send the determine instruction for including NFC contactless card piece response identifications respectively, and NFC sensing cards receive
Determination state is put into the determine instruction being consistent with oneself identification number, otherwise into judgement state；
A6, the NFC reader retransmit access instruction, if not including the identification number for specifying NFC to sense card in parameter,
Now all NFC sensings cards in determination state are transmitted all using each caused channel code to oneself needs
Data, which are extended, to be modulated and sends, and after having sent, NFC sensing cards return to initial state；If finger is included in parameter
Determine the identification number of NFC sensing cards, now all NFC sensing cards for being in determination state and being consistent with specified identification number
Using foregoing caused channel code, all data for oneself needing to transmit are extended and modulates and sends, after having sent,
The NFC sensings card returns to initial state；
A7, the NFC reader judge whether current point-to-multipoint frame terminates, if so, then performing A9；
A8, the NFC reader, which are sent, continues access instruction, performs A3；
A9, the NFC reader, which are sent, accesses adjust instruction, performs the identification of next frame.
2. a kind of the method as described in claim 1, the verification terminal of the step S2 perform NFC communication data integrality and
The checking of correctness specifically includes：
B1, NFC reader prejudge after the data that NFC sensing cards are sent are received according to type of service and tentation data form
Whether disconnected received data is complete or correct, when above-mentioned NFC reader is indicated the integrality or correctness of the data of reception
When " uncertain ", data check instruction is sent to verification terminal, and sent simultaneously to NFC sensing cards and start WLAN to perform number
According to the request of verification；
When B2, verification terminal receive the checking command of NFC reader, user data, institute are asked to intelligent terminal by WLAN
After stating request described in intelligent terminal for reception, the user data information in NFC sensing cards is directly read, after being encrypted, is passed through
WLAN is sent to verification terminal；
After B3, verification terminal receive the user data of intelligent terminal transmission and be decrypted, with the data of NFC reader reception
The comparison of integrality and correctness is carried out, and comparison result is sent to NFC reader；
B4, the NFC reader decide whether to access NFC contactless cards again to obtain data according to verification comparison result.
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| CN110649941B (en) * | 2019-09-12 | 2021-03-19 | 北京维普无限智能技术有限公司 | Method for recognizing noise by non-contact card reader |
| CN110650466B (en) * | 2019-09-12 | 2022-07-29 | 北京维普无限智能技术有限公司 | Method for reducing power consumption of non-contact card equipment |
| CN111107219B (en) * | 2019-11-20 | 2021-06-22 | 维沃移动通信有限公司 | Control method and electronic equipment |
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| CA2841776C (en) * | 2011-07-11 | 2018-03-06 | Blackberry Limited | Data integrity for proximity-based communication |
| KR20130027965A (en) * | 2011-09-08 | 2013-03-18 | 삼성전자주식회사 | A method and apparatus for controlling in a near field communication network including a prurality of connections for direct communication between a device and a device |
| CN202907190U (en) * | 2012-08-31 | 2013-04-24 | 深圳盈烨创新通讯技术有限公司 | NFC handset-based member identification system |
| CN104217344B (en) * | 2014-09-26 | 2015-10-14 | 大连声鹭科技有限公司 | Tag marker and commodity track of the whole process RFID label tag system |
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Denomination of invention: An Intelligent Recognition Method for NFC Systems Effective date of registration: 20230809 Granted publication date: 20180403 Pledgee: Chongqing Branch of China Everbright Bank Co.,Ltd. Pledgor: BOLAA NETWORK Co.,Ltd.|Chongqing Wingshengda Technology Co.,Ltd. Registration number: Y2023500000055 |