CN104426572A - Method and system for multiplexing radio-frequency front end - Google Patents
Method and system for multiplexing radio-frequency front end Download PDFInfo
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- CN104426572A CN104426572A CN201310413017.5A CN201310413017A CN104426572A CN 104426572 A CN104426572 A CN 104426572A CN 201310413017 A CN201310413017 A CN 201310413017A CN 104426572 A CN104426572 A CN 104426572A
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- 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
- G06K7/10297—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 arrangements for handling protocols designed for non-contact record carriers such as RFIDs NFCs, e.g. ISO/IEC 14443 and 18092
Abstract
The invention discloses a system for multiplexing a radio-frequency front end. The system comprises a card reader and a mobile terminal, wherein the mobile terminal comprises a radio-frequency unit, a multiplexing unit and non-contact protocol units; the multiplexing unit is used for sending a demand sent from the radio-frequency unit to each non-contact protocol unit, judging response data of each non-contact protocol unit and outputting impact data to the radio-frequency unit; the radio-frequency unit is used for receiving and modulating the impact data; the modulated data is sent to the card reader in a manner of a radio-frequency modulation signal; a plurality of non-contact protocol units are used for receiving a card reader demand sent by the multiplexing unit, analyzing the demand and sending response data to the multiplexing unit according to analysis results; the card reader is used for regenerating a card reading demand containing connection identifiers of the non-contact protocol units and sending the card reading demand to the multiplexing unit when receiving a radio-frequency modulation signal which cannot be identified. The invention also provides a method for multiplexing the radio-frequency front end. The system and the method disclosed by the invention can reduce the interaction process of a user and a terminal during communication.
Description
Technical field
The present invention relates to field of mobile terminals, be specifically related to a kind of radio frequency (Radio Frequency, RF) front end multiplexing method and system.
Background technology
In mobile payment, mobile terminal often has multiple SE(SECURITY ENTITY, security module), in current mobile terminal, the structure of SE is see Fig. 1.In this scheme, mobile terminal has two SE.Carry out mobile payment when closely swiping the card, owing to not having parameter to be shown to be in the application layer data that sends from card reader to be transferred to SE A or SE is B, therefore can only can only have 1 work by SE A and SE B.When carrying out closely mobile payment, user needs the SE first arranging a job on mobile terminals, then concludes the business; If next time, transaction used another SE, then user needs the SE resetting work.If in closely mobile payment process, SE A does not comprise effective information, and SE B comprises effective information.And user that SE uncertain is effectively current.At this time will conclude the business according to the flow process of Fig. 2.
S001: user arranges SE A and connects the work of noncontact protocol element, and SE B disconnects;
S002: mobile terminal is near card reader, and card reader sends instruction to CLF(Contact LessFrontend, contactless front end);
Application layer instruction is sent to SE A by S003:CLF;
S004:SE A returns response data to CLF;
Data are returned to card reader by S005:CLF;
The application layer data that S006:SE A responds is not the parameter that card reader is wished; Card reader prompting user cannot conclude the business with SE A.
S007: user arranges SE B and connects the work of noncontact protocol element, and SE A disconnects;
S008: terminal is near card reader, and card reader sends instruction to CLF;
Application layer instruction is sent to SE B by S009:CLF;
S010:SE B returns response data to CLF;
Data are returned to card reader by S011:CLF;
S012: card reader detects that SE B includes the information of card reader needs, so continue to send instruction to carry out further data interaction.
In this process, before transaction, user will select the SE of work on mobile terminals, and arranges rear uncertain energy guarantee communication, uses trouble.
Summary of the invention
Main purpose of the present invention is to provide a kind of radio-frequency front-end multiplexing method, will select the SE of work on mobile terminals to solve in prior art user before transaction, and arranges and uncertainly can ensure communication afterwards, uses troublesome technical problem.
In order to realize goal of the invention, the invention provides a kind of system of duplex radio frequency front end, comprising card reader and mobile terminal, described mobile terminal comprises radio frequency unit, Multiplexing Unit and noncontact protocol element, wherein,
Multiplexing Unit, for the instruction received from radio frequency unit is distributed to each noncontact protocol element, and the response data that each noncontact protocol element sends is adjudicated, and when the bit of the multiple response datas participating in judgement is different, export crash data to radio frequency unit;
Radio frequency unit, for receiving and carrying out modulation treatment to crash data, is sent to card reader by the data rf modulated signal after modulation treatment, and receives the instruction of card reader transmission;
Some noncontact protocol element, receives the card reader instruction of Multiplexing Unit distribution and resolves this instruction, sends response data to Multiplexing Unit according to analysis result;
Described card reader is used for when receiving the rf modulated signal of None-identified, regenerates the Card Reader instruction that comprises noncontact protocol element connection identifier (CID and is sent to Multiplexing Unit.
Preferably, described Multiplexing Unit also for:
When the branch road carrying out data interaction with radio-frequency front-end only has 1, directly export initial data to radio frequency unit.
Preferably, described radio frequency unit specifically for:
When the data inputted are initial data, produce corresponding radiofrequency signal according to ISO14443 protocol modulation;
When the data inputted are crash data, producing cannot by the rf modulated signal of reader identification.
Preferably, described card reader comprises: anti-collision instruction generation unit, for generating anti-collision instruction and being sent to Multiplexing Unit;
Described noncontact protocol element is used for:
The anti-collision instruction received is resolved, sends response instruction when this anti-collision instruction is the information pointing to this unit; This response instruction comprises user identity proves information.
Preferably, described anti-collision instruction generation unit also for: the response instruction received is detected, and proves that information generates the anti-collision instruction of corresponding described some noncontact protocol element according to the user identity in response instruction.
Preferably, described card reader also comprises: selection instruction generation unit, for generating the selection instruction pointing to a certain noncontact protocol element;
Described noncontact protocol element is used for:
The selection instruction received is detected, sends response instruction when selection instruction is the instruction pointing to this unit, when selection instruction is the instruction of non-this unit of sensing, discard processing is done to this selection instruction.
Preferably, described card reader also comprises: request selecting response instruction generation unit, for generating the request selecting response instruction pointing to a certain noncontact protocol element;
Described noncontact protocol element is used for:
The request selecting response instruction received is detected, the processing instruction when request selecting response instruction is the instruction pointing to this unit also returns response message, ignores this request selecting response instruction when request selecting response instruction is the instruction of non-this unit of sensing.
Preferably, described noncontact protocol element also for:
Frame synchronization and slot synchronization process are carried out to the data received, and send response data on time slot after treatment.
The present invention separately provides a kind of method of duplex radio frequency front end, comprises the following steps:
The instruction received from radio frequency unit is distributed to each noncontact protocol element by Multiplexing Unit;
Noncontact protocol element receives the card reader instruction of distribution and resolves this instruction, sends response data according to analysis result;
Multiplexing Unit is adjudicated the response data that each noncontact protocol element sends, and when the bit of the multiple response datas participating in judgement is different, exports crash data to radio frequency unit;
Radio frequency unit receives and carries out modulation treatment to crash data, and the data rf modulated signal after modulation treatment is sent to card reader;
Card reader, when receiving the rf modulated signal of None-identified, regenerates the Card Reader instruction that comprises noncontact protocol element connection identifier (CID and exports.
Preferably, said method is further comprising the steps of:
When the branch road carrying out data interaction with radio-frequency front-end only has 1, directly export data to radio frequency unit.
Preferably, described reception the step that crash data carries out modulation treatment is comprised:
When the data inputted are initial data, produce corresponding radiofrequency signal according to ISO14443 protocol modulation;
When the data inputted are crash data, producing cannot by the rf modulated signal of reader identification.
Preferably, described card reader, when receiving the rf modulated signal of None-identified, regenerates the Card Reader instruction that comprises noncontact protocol element connection identifier (CID and the step exported comprises:
Generate anti-collision instruction and be sent to Multiplexing Unit;
Described noncontact protocol element receives the card reader instruction of distribution and resolves this instruction, the step sending response data according to analysis result comprises: resolve the anti-collision instruction received, and sends response instruction when this instruction is the information pointing to this unit; This response instruction comprises user identity proves information.
Preferably, described generation anti-collision instruction be sent to Multiplexing Unit and comprise further:
The response instruction received is detected, and proves that information generates the anti-collision instruction of corresponding described some noncontact protocol element according to the user identity in response instruction.
Preferably, described card reader, when receiving the rf modulated signal of None-identified, regenerates the Card Reader instruction that comprises noncontact protocol element connection identifier (CID and the step exported comprises:
Generate the selection instruction pointing to a certain noncontact protocol element;
Described noncontact protocol element receives the card reader instruction of distribution and resolves this instruction, and the step sending response data according to analysis result comprises:
The selection instruction received is detected, sends response instruction when selection instruction is the instruction pointing to this unit, when selection instruction is the instruction of non-this unit of sensing, discard processing is done to this selection instruction.
Preferably, described card reader, when receiving the rf modulated signal of None-identified, regenerates the Card Reader instruction that comprises noncontact protocol element connection identifier (CID and the step exported comprises:
Generate the request selecting response instruction pointing to a certain noncontact protocol element;
Described noncontact protocol element receives the card reader instruction of distribution and resolves this instruction, and the step sending response data according to analysis result comprises:
The request selecting response instruction received is detected, the processing instruction when request selecting response instruction is the instruction pointing to this unit also returns response message, ignores this request selecting response instruction when request selecting response instruction is the instruction of non-this unit of sensing.
Preferably, described noncontact protocol element receives the card reader instruction of distribution and resolves this instruction, and the step sending response data according to analysis result also comprises:
Frame synchronization and slot synchronization process are carried out to the data received, and send response data on time slot after treatment.
The present invention by arranging Multiplexing Unit and improving noncontact protocol element and radio frequency unit between noncontact protocol element and radio frequency unit, achieve the multiplexing same radio frequency unit of multiple noncontact protocol element, multiple noncontact protocol element works alone simultaneously, can be in state of activation, card reader can carry out transfer of data by the mode of training in rotation and each noncontact protocol element simultaneously.Therefore multiple SE that noncontact protocol element connects can work simultaneously, and data can be read simultaneously.Card reader according to user interactions or application program decide communicate with concrete SE, thus decrease the process of user and terminal interaction in communication process.
Accompanying drawing explanation
Fig. 1 is the structural representation of radio frequency safety module in existing mobile terminal;
Fig. 2 is that existing mobile terminal and card reader carry out the mutual schematic flow sheet of rf data;
Fig. 3 is the structural representation of duplex radio frequency front end in one embodiment of the invention;
Fig. 4 is the radiofrequency signal tilde schematic diagrames of two noncontact protocol elements when the bit of data is identical;
Fig. 5 is the radiofrequency signal tilde schematic diagrames of two noncontact protocol elements when the bit of data is not identical;
Fig. 6 is that in one embodiment of the invention, two noncontact protocol elements respond ATQA(Answer ToRequest A, the response to noncontact protocol element A simultaneously) instruction produce radiofrequency signal oscillogram;
Fig. 7 is the structural representation of one embodiment of the invention card reader;
Fig. 8 is the radiofrequency signal oscillogram that two noncontact protocol elements respond anti-collision instruction generation simultaneously;
Fig. 9 is the method flow schematic diagram of duplex radio frequency front end in one embodiment of the invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only for explaining the present invention, being not intended to limit the present invention.
Core concept of the present invention arranges Multiplexing Unit between noncontact protocol element and radio frequency unit, receive the Card Reader instruction of card reader transmission by Multiplexing Unit and be distributed to each noncontact protocol element, the data of each noncontact protocol element response are adjudicated, when the bit of the multiple data participating in judgement is different, export crash data and export radio frequency unit to, exporting card reader to by radio frequency unit.After card reader receives the data that cannot be detected radiofrequency signal, generation comprises the Card Reader instruction of noncontact protocol element connection identifier and is sent to Multiplexing Unit, thus carries out Card Reader operation to certain noncontact protocol element.
With reference to shown in Fig. 3, in one embodiment of the invention, the system of duplex radio frequency front end comprises card reader 1 and mobile terminal 2, and wherein mobile terminal 2 is built-in with radio frequency unit 31, Multiplexing Unit 32 and noncontact protocol element 33, wherein,
Multiplexing Unit 31, for receiving the Card Reader instruction of card reader transmission and being distributed to each noncontact protocol element, and the response data that each noncontact protocol element sends is adjudicated, and when the bit of the multiple response datas participating in judgement is different, export crash data to radio frequency unit;
Radio frequency unit 32, for receiving and carrying out modulation treatment to crash data, is sent to card reader by the data rf modulated signal after modulation treatment;
Some noncontact protocol element 33, receives the card reader instruction of Multiplexing Unit distribution and resolves this instruction, sends response data to Multiplexing Unit according to analysis result;
Described card reader 1, for when receiving the rf modulated signal of None-identified, regenerating the Card Reader instruction that comprises noncontact protocol element connection identifier (CID and being sent to Multiplexing Unit.
In the embodiment of the present invention, radio frequency unit 31 is responsible for received RF (Radio Frequency, RF) carrier signal and demodulation obtains data; Modulate data on subcarrier, then by sub-carrier modulation to radio-frequency carrier, send signal.If the data of input are ' 0 ' or ' 1 ', then produce corresponding radiofrequency signal according to ISO14443 modulation.If the data of input are crash data ' Z ', then producing cannot by the rf modulated signal of reader identification.
Fig. 4 shows bit for ' 0 ' and ' 1 ' corresponding radiofrequency signal.When Fig. 5 shows bit difference, the radio frequency waveform produced after modulation.Be characterized in radiofrequency signal detecting subcarrier or subcarrier are not modulated.Radiofrequency signal after superposition is labeled as ' Z ', and card reader 1 detects that this symbol is different with the symbol of other transmission data (0 and 1), thus determines to there are multiple cards in radiofrequency field.
Multiplexing Unit 32 will be distributed to each noncontact protocol element 33 after the data decode received from radio frequency unit 31; The data that each noncontact protocol element 33 is sent are adjudicated.In one embodiment, the rule of judgement is as follows:
1, when noncontact protocol element 33 exports data time, participate in judgement, if do not export data, then do not participate in judgement.
If the bit of the data of 2 participation judgements is identical, then export initial data;
If the bit of the data of 3 participation judgements is different, then export data ' Z ';
If 4 only have 1 branch road, then export transparent outputs data bits.
Multiplexing Unit 32 is functional units, can by software and/or hardware implementing.
In the embodiment of the present invention, noncontact protocol element 33 can resolve card reader instruction, to judge whether this instruction issues oneself.Each noncontact protocol element 33 yuan has independently UID (UserIdentification, user identity proves) mark, UID comes from noncontact protocol element 33 constant mark, or comes from random number, or come from external interface, the UID of each noncontact protocol element is different.Noncontact protocol element 33 supports ISO14443-3 agreement, carries out frame synchronization, slot synchronization to reception data; Be responsible for protocol processes, receive order, send response instruction or data.Noncontact protocol element 33 is connected with application by interface, SE etc. carries out data interaction.Noncontact protocol element 33 is functional units, by software and/or hardware implementing, can realize an independently function.Multiple noncontact protocol element 33 can on same physical location, also can not on same physical location.
In the embodiment of the present invention, multiple noncontact protocol element 33 works alone; Multiplexing Unit 32 by the Data dissemination after radio frequency unit 31 demodulation to noncontact protocol element 33; If the bit of the data that each noncontact protocol element 33 exports is different, then export crash data to radio frequency unit 31, after the modulation of this crash data, the symbol that its radio-frequency carrier carries cannot be detected data by card reader.If card reader 1 points out user cannot support to there are multiple cards in radiofrequency field, then user can be arranged the noncontact protocol element 33 of work.Select a noncontact protocol element 33 to work, other protocol elements quit work; Or card reader is according to the rule preset, only start a SE job.According to ISO14443 agreement, card reader can according to detecting that radiofrequency signal ' Z ' resends data again, and these data can avoid the bit position occurring superposition.Through repeatedly such flow process, until thoroughly select certain card upper, be its CID allocation (Connection Identifier, connection identifier) information, follow-up instruction just only can issue corresponding card.Card reader is initiated for not selected card initialization procedure again.Through operation repeatedly, the multiple cards in same radiofrequency field can be selected.Then card reader 1 can send data to the card of specifying, and corresponding card receives data, and other card does not send data, so this process does not have data collision, so card reader can receive normally.At this time concrete and that card-to-card communication, is determined by card reader 1 completely, and user does not need to participate in.Card reader 1 can read some basic information by each card completely, judges to select with which SE to communicate again according to these basic information.
Further, in one embodiment of the invention, noncontact protocol element 33 also can be used for: carry out frame synchronization and slot synchronization process to the data received, and send response data on time slot after treatment.In the embodiment of the present invention, each noncontact protocol element 33 collaborative work can be coordinated by peripheral control unit, such as quit work or start working.If each noncontact protocol element 33 works under common controller controls, the radio frequency unit of work ISO-14443Type category-B type receives REQB(Request B, the request of noncontact protocol element B) after instruction, noncontact protocol element 33 sends response data, to reduce collision probability on the time slot after coordinating.
Suppose that mobile terminal 2 exists two noncontact protocol elements 33, noncontact protocol element is operated in TypeA pattern, and noncontact protocol element 33A is connected with SE A, and noncontact protocol element 33B is connected with SE B.Example one describes in the system of duplex radio frequency front end of the present invention, card reader 1 without user interaction, the flow process that two the noncontact protocol element 33 that is connected with SE communicates simultaneously.
Example one
S101: card reader 1 opens RF field, is operated in Type A pattern, sends REQA instruction.
S102: REQA is distributed to noncontact protocol element 33A by Multiplexing Unit 32.
S103: REQA is distributed to noncontact protocol element 33B by Multiplexing Unit 32.
S104: noncontact protocol element 33A according to the modulation system of REQA, and the mode of operation detecting current radio frequency field is the same with the mode of operation of oneself, so response WUPA(Wake UP A, noncontact protocol element A wakes instruction up), send response data ATQA.Wherein bit6=0;
S105: noncontact protocol element 33B according to the modulation system of REQA, and the mode of operation detecting current radio frequency field is the same with the mode of operation of oneself, so response WUPA instruction, sends response data ATQA.Wherein bit6=1, other data bit are identical with the data bit that noncontact protocol element 33B sends.
S106: Multiplexing Unit is adjudicated signal, adjudicates by bit.Wherein bit6 is different, produces collision indicating bit ' Z '.The Data Modulation that Multiplexing Unit 32 exports by radio frequency unit 31 is to radio frequency subcarrier, and subcarrier is modulated on radio-frequency carrier again.In Fig. 6, ' Z ' collides radiofrequency signal waveform in the present embodiment, cannot be correctly received.Other symbols can correctly receive.Card reader detects that mistake appears in bit6, thinks that this bit there occurs collision, thinks and occurs there is plural noncontact protocol element 33 in radiofrequency field.
With reference to Fig. 7, in one embodiment of the invention, card reader 1 comprises: anti-collision instruction generation unit 110, for when card reader 1 receives the rf modulated signal of None-identified, generates anti-collision ANTICOLLISION instruction and is sent to Multiplexing Unit 32.Noncontact protocol element 33 can be resolved the anti-collision ANTICOLLISION instruction received, and sends response instruction when this ANTICOLLISION instruction is the information pointing to this unit; This response instruction comprises user identity proves UID information.Concrete, please refer to following example two.
Example two
S201: card reader 1 sends ANTICOLLISION(anti-collision) instruction (0x930x20).
S202: ANTICOLLISION is distributed to noncontact protocol element 33A by Multiplexing Unit 32.
S203: ANTICOLLISION is distributed to noncontact protocol element 33B by Multiplexing Unit 32.
S204: noncontact protocol element 33A resolves discovery instruction issues oneself, therefore sends response instruction; Response instruction comprises UID information, wherein byte0=0x08;
S205: noncontact protocol element 33B resolves discovery instruction issues oneself, therefore sends response instruction; Response instruction comprises UID information, wherein byte0=0x11;
S206: two data of Multiplexing Unit 32 to input are carried out by the judgement of bit position, and wherein bit3, bit4, bit7 are different, produce collision indicating bit ' Z '.The Data Modulation that Multiplexing Unit 32 exports by radio frequency unit 31 is to radio frequency subcarrier, and subcarrier is modulated on radio-frequency carrier again, and the radiofrequency signal that wherein Z is corresponding cannot by PCD(Proximity Coupling Device, card reader chip) correctly detect.In Fig. 8, ' Z ' is exactly the radiofrequency signal waveform of collision, cannot be correctly received.Card reader 1 correctly detects bit0-2, and bit3 cannot be correctly detected, and therefore think to there are two protocol elements in radiofrequency field, and the foremost 4bit of its UID identification information is respectively: xxx1 and xxx0.
In one embodiment of the invention, anti-collision instruction generation unit 110 also for: the response instruction received is detected, and generates the ANTICOLLISION instruction of corresponding described some noncontact protocol element 33 according to the UID information in response instruction.
Concrete, concrete, please refer to following example two, the handling process of system is as follows:
Example three
S301: card reader 1 resends ANTICOLLISION instruction, using (xxx0) B as parameter, represents the noncontact protocol element 33 selecting UID the most front 4bit=(xxx0) B.
S302: ANTICOLLISION is distributed to noncontact protocol element 33A by Multiplexing Unit 32.
S303: ANTICOLLISION is distributed to noncontact protocol element 33B by Multiplexing Unit 32.
S304: noncontact protocol element 33A checks that parameter (xxx0) B equals the 4bit(xxx0 of the foremost of UID information) B, noncontact protocol element 33A send response data.
Noncontact protocol element 33B checks that parameter is the 4bit(xxx1 that (xxx0) B is not equal to the foremost of UID information) B, detect that this instruction does not send to oneself.Therefore abandon this instruction, do not do any response.
S305: Multiplexing Unit 32 receives the data that noncontact protocol element 33A sends over, detects currently only have a branch data, and decision device directly exports data to carry out modulation to radio frequency unit and send, and all signals can be correctly decoded by card reader 1.
In one embodiment of the invention, card reader 1 also comprises: selection instruction generation unit 111, for when receiving the rf modulated signal of None-identified, generates the selection instruction pointing to a certain noncontact protocol element 33.Noncontact protocol element 33 for: the selection SELECT instruction received is detected, is send response instruction SAK when pointing to the instruction of this unit in selection instruction, when selection instruction is the instruction of non-this unit of sensing, discard processing is done to this selection instruction.
Concrete, please refer to following example four, the handling process of system is as follows:
Example four
S401: card reader 1 sends SELECT instruction to noncontact protocol element 33A, sends;
S402: the instruction received is distributed to noncontact protocol element 33A by Multiplexing Unit 32;
S403: the instruction received is distributed to noncontact protocol element 33B by Multiplexing Unit 32;
S404: noncontact protocol element 33A to detect this be one's own instruction, processing instruction, and send response instruction SAK.Unit B detects it is not issue oneself instruction, abandons.
S405: Multiplexing Unit 32 receives the data that noncontact protocol element 33A sends over, detects currently only have a branch data, and decision device directly exports data to carry out modulation to radio frequency unit 31 and send, and all signals can be correctly decoded.
In one embodiment of the invention, card reader 1 also comprises: request selecting response (RATS) instruction generation unit 112, for when receiving the rf modulated signal of None-identified, generates the RATS instruction pointing to a certain noncontact protocol element 33.In the present embodiment, noncontact protocol element 33 for: the RATS instruction received is detected, the processing instruction when RATS instruction is the instruction pointing to this unit also returns response message, ignores this RATS instruction when RATS instruction is the instruction of non-this unit of sensing.
Concrete, please refer to example five, the handling process of system is as follows:
Example five
S501: card reader 1 sends RATS instruction to noncontact protocol element 33A is its allocation identification information CID1;
S502: the instruction received is distributed to noncontact protocol element 33A by Multiplexing Unit 32;
S503: the instruction received is distributed to noncontact protocol element 33B by Multiplexing Unit 32;
S504: noncontact protocol element 33A detects that instruction issues oneself, processing instruction also returns response message.Noncontact protocol element 33B processing instruction, finds it is not to the instruction of oneself, ignores this instruction, do not do any response.
S505: Multiplexing Unit 32 receives the data that noncontact protocol element 33A sends over, detects currently only have a branch data, and decision device directly exports data to carry out modulation to radio frequency unit 31 and send, and all signals can be correctly decoded.
Now noncontact protocol element 33A is activated, and can carry out transfer of data.
What above-described embodiment described is the data exchange process of noncontact protocol element 33A, and for noncontact protocol element 33B, handling process of the present invention please refer to following example six to example eight.
Example six
S601: card reader 1 resends ANTICOLLISION instruction, using (xxx1) B as parameter, represents and selects UID the most front 4bit=(xxx1) protocol element of B.
S602: ANTICOLLISION is distributed to noncontact protocol element 33A by Multiplexing Unit 32.
S603: ANTICOLLISION is distributed to noncontact protocol element 33B by Multiplexing Unit 32.
S604: noncontact protocol element 33A is in state of activation, ignores this instruction; Noncontact protocol element 33B checks that the parameter that ANTICOLLISION instruction is carried is (xxx0) B, equals the 4bit(xxx0 of the foremost of UID information), detect that this instruction sends to oneself, respond this instruction.
S605: Multiplexing Unit 32 receives the data that noncontact protocol element 33B sends over, detects currently only have a branch data, and decision device directly exports data to carry out modulation to radio frequency unit 31 and send, and all signals can be correctly decoded.
Example seven
S701: card reader 1 sends SELECT instruction to noncontact protocol element 33B, sends;
S702: the instruction received is distributed to noncontact protocol element 33A by Multiplexing Unit 32;
S703: the instruction received is distributed to noncontact protocol element 33B by Multiplexing Unit 32;
S704: noncontact protocol element 33B to detect this be one's own instruction, processing instruction, and send response instruction SAK.Noncontact protocol element 33A detects it is not issue oneself signal, abandons.
S705: Multiplexing Unit 32 receives the data that noncontact protocol element 33B sends over, detects currently only have a branch data, and decision device directly exports data to carry out modulation to radio frequency unit 31 and send, and all signals can be correctly decoded.
Example eight
S801: card reader 1 sends RATS instruction to noncontact protocol element 33A is its allocation identification information CID2;
S802: the instruction received is distributed to noncontact protocol element 33A by Multiplexing Unit 32;
S803: the instruction received is distributed to noncontact protocol element 33B by Multiplexing Unit 32;
S804: noncontact protocol element 33A processing instruction, finds it is not to the instruction of oneself, ignores this instruction, do not respond.Noncontact protocol element 33B detects that instruction issues oneself, and processing instruction also returns response message.
S805: Multiplexing Unit 32 receives the data that noncontact protocol element 33B sends over, detects currently only have a branch data, and decision device directly exports data to carry out modulation to radio frequency unit 31 and send, and all signals can be correctly decoded.
Now noncontact protocol element 33B is activated, and can carry out transfer of data.
Because two noncontact protocol elements 33 are all in state of activation, card reader 1 can send data to any one non-contact protocol element, card reader 1 sends in the instruction of noncontact protocol element A and noncontact protocol element B two protocol elements and contains a parameter CID, this parameter indicator issues that noncontact protocol element 33, only have 1 noncontact protocol element 33 to send response instruction, therefore correctly can be received by card reader 1.Noncontact protocol element 33 sends the data to corresponding SE again, therefore achieves communicating of card reader 1 and SE.
Because card reader 1 can communicate with two SE, therefore do not need user to arrange external equipments such as the SE that protocol processing unit or protocol processing unit connect, have great convenience for the user to use.
It should be noted that in above-mentioned example, S101 to S805 is only process step label, without other implications.
The present invention separately provides a kind of method of duplex radio frequency front end, and the method can realize based on the system of aforementioned duplex radio frequency front end.With reference to Fig. 9, in one embodiment of the invention, the method for duplex radio frequency front end comprises the following steps:
Step S10, Multiplexing Unit receives the Card Reader instruction of card reader transmission and is distributed to each noncontact protocol element; Such as, Multiplexing Unit 32 will be distributed to each noncontact protocol element 33 after the data decode received from radio frequency unit 31.
Step S20, noncontact protocol element receives the card reader instruction of distribution and resolves this instruction, sends response data according to analysis result; Such as noncontact protocol element 33 is resolved card reader instruction and whether is issued oneself.
Step S30, Multiplexing Unit is adjudicated the response data that each noncontact protocol element sends, and when the bit of the multiple response datas participating in judgement is different, exports crash data to radio frequency unit; Such as, Multiplexing Unit 32 is adjudicated by turn to the response data that each noncontact protocol element 33 sends, and judges whether that bit is different.
Step S40, radio frequency unit receives and carries out modulation treatment to crash data, and the data rf modulated signal after modulation treatment is sent to card reader; Such as, if the bit of the data of each noncontact protocol element 33 output is different, then Multiplexing Unit 32 exports crash data to RF unit 31, and after this crash data is modulated by RF unit 31, the symbol that its RF carrier wave carries cannot be detected data by card reader.
Step S50, card reader, when receiving the rf modulated signal of None-identified, regenerates the Card Reader instruction that comprises noncontact protocol element connection identifier (CID and exports.Such as, when receiving the RF modulation signal of None-identified, card reader 1 points out user cannot support to there are multiple cards in RF field.If card reader 1 points out user cannot support to there are multiple cards in RF field, then user can be arranged the noncontact protocol element 33 of work.Select a noncontact protocol element 33 to work, other protocol elements quit work; Or card reader is according to the rule preset, only start a SE job.
In one embodiment, said method is further comprising the steps of:
When the branch road carrying out data interaction with radio-frequency front-end only has 1, directly export data to radio frequency unit.
Further, in one embodiment, above-mentioned steps S40 comprises:
When the data inputted are initial data, produce corresponding radiofrequency signal according to ISO14443 protocol modulation;
When the data inputted are crash data, producing cannot by the rf modulated signal of reader identification.Concrete, cannot be can refer to shown in Fig. 6 and Fig. 8 by its waveform of the rf modulated signal of reader identification.
In one embodiment, above-mentioned steps S50 comprises:
When card reader receives the rf modulated signal of None-identified, generate anti-collision ANTICOLLISION instruction and be sent to Multiplexing Unit;
Accordingly, above-mentioned steps S20 comprises: resolve the anti-collision ANTICOLLISION instruction received, and sends response instruction when this ANTICOLLISION instruction is the information pointing to this unit; This response instruction comprises UID information.The handling process of the present embodiment can refer to above-mentioned example one.
Further, above-mentioned steps S50 also can comprise:
The response instruction received is detected, and generates the ANTICOLLISION instruction of corresponding described some noncontact protocol element according to the UID information in response instruction.The handling process of the present embodiment can refer to above-mentioned example two.
In another embodiment, above-mentioned steps S50 can comprise:
When receiving the rf modulated signal of None-identified, generate the SELECT instruction pointing to a certain noncontact protocol element.
Accordingly, above-mentioned steps S20 comprises:
The selection SELECT instruction received is detected, sends response instruction SAK when SELECT instruction is the instruction pointing to this unit, when SELECT instruction is the instruction of non-this unit of sensing, discard processing is done to this SELECT instruction.The handling process of the present embodiment can refer to above-mentioned example three.
In another embodiment, above-mentioned steps S50 comprises:
Generate the request selecting response instruction pointing to a certain noncontact protocol element;
Accordingly, above-mentioned steps S20 comprises:
Detect the RATS instruction received, the processing instruction when RATS instruction is the instruction pointing to this unit also returns response message, ignores this RATS instruction when RATS instruction is the instruction of non-this unit of sensing.The handling process of the present embodiment can refer to above-mentioned example four.
Above-mentioned steps S20 also can comprise:
Frame synchronization and slot synchronization process are carried out to the data received, and send response data on time slot after treatment.In the embodiment of the present invention, each noncontact protocol element 33 collaborative work can be coordinated by peripheral control unit, such as quit work or start working.If each noncontact protocol element 33 works under common controller controls, after the RF unit of work ISO-14443Type category-B type receives REQB instruction, noncontact protocol element 33 sends response data, to reduce collision probability on the time slot after coordinating.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (16)
1. a system for duplex radio frequency front end, is characterized in that, comprises card reader and mobile terminal, and described mobile terminal comprises radio frequency unit, Multiplexing Unit and noncontact protocol element, wherein,
Multiplexing Unit, for the instruction received from radio frequency unit is distributed to each noncontact protocol element, and the response data that each noncontact protocol element sends is adjudicated, and when the bit of the multiple response datas participating in judgement is different, export crash data to radio frequency unit;
Radio frequency unit, for receiving and carrying out modulation treatment to crash data, is sent to card reader by the data rf modulated signal after modulation treatment, and receives the instruction of card reader transmission;
Some noncontact protocol element, receives the card reader instruction of Multiplexing Unit distribution and resolves this instruction, sends response data to Multiplexing Unit according to analysis result;
Described card reader is used for when receiving the rf modulated signal of None-identified, regenerates the Card Reader instruction that comprises noncontact protocol element connection identifier (CID and is sent to Multiplexing Unit.
2. the system of duplex radio frequency front end as claimed in claim 1, is characterized in that, described Multiplexing Unit also for:
When the branch road carrying out data interaction with radio-frequency front-end only has 1, directly export initial data to radio frequency unit.
3. the system of duplex radio frequency front end as claimed in claim 2, is characterized in that, described radio frequency unit specifically for:
When the data inputted are initial data, produce corresponding radiofrequency signal according to ISO14443 protocol modulation;
When the data inputted are crash data, producing cannot by the rf modulated signal of reader identification.
4. the system of duplex radio frequency front end as claimed in claim 3, it is characterized in that, described card reader comprises: anti-collision instruction generation unit, for generating anti-collision instruction and being sent to Multiplexing Unit;
Described noncontact protocol element is used for:
The anti-collision instruction received is resolved, sends response instruction when this anti-collision instruction is the information pointing to this unit; This response instruction comprises user identity proves information.
5. the system of duplex radio frequency front end as claimed in claim 1, it is characterized in that, described anti-collision instruction generation unit also for: the response instruction received is detected, and proves that information generates the anti-collision instruction of corresponding described some noncontact protocol element according to the user identity in response instruction.
6. the system of duplex radio frequency front end as claimed in claim 1, it is characterized in that, described card reader also comprises: selection instruction generation unit, for generating the selection instruction pointing to a certain noncontact protocol element;
Described noncontact protocol element is used for:
The selection instruction received is detected, sends response instruction when selection instruction is the instruction pointing to this unit, when selection instruction is the instruction of non-this unit of sensing, discard processing is done to this selection instruction.
7. the system of duplex radio frequency front end as claimed in claim 1, it is characterized in that, described card reader also comprises: request selecting response instruction generation unit, for generating the request selecting response instruction pointing to a certain noncontact protocol element;
Described noncontact protocol element is used for:
The request selecting response instruction received is detected, the processing instruction when request selecting response instruction is the instruction pointing to this unit also returns response message, ignores this request selecting response instruction when request selecting response instruction is the instruction of non-this unit of sensing.
8. the system of the duplex radio frequency front end according to any one of claim 1 to 7, is characterized in that, described noncontact protocol element also for:
Frame synchronization and slot synchronization process are carried out to the data received, and send response data on time slot after treatment.
9. a method for duplex radio frequency front end, is characterized in that, comprises the following steps:
The instruction received from radio frequency unit is distributed to each noncontact protocol element by Multiplexing Unit;
Noncontact protocol element receives the card reader instruction of distribution and resolves this instruction, sends response data according to analysis result;
Multiplexing Unit is adjudicated the response data that each noncontact protocol element sends, and when the bit of the multiple response datas participating in judgement is different, exports crash data to radio frequency unit;
Radio frequency unit receives and carries out modulation treatment to crash data, and the data rf modulated signal after modulation treatment is sent to card reader;
Card reader, when receiving the rf modulated signal of None-identified, regenerates the Card Reader instruction that comprises noncontact protocol element connection identifier (CID and exports.
10. the method for duplex radio frequency front end as claimed in claim 9, is characterized in that, further comprising the steps of:
When the branch road carrying out data interaction with radio-frequency front-end only has 1, directly export data to radio frequency unit.
The method of 11. duplex radio frequency front ends as claimed in claim 10, is characterized in that, described reception also comprises the step that crash data carries out modulation treatment:
When the data inputted are initial data, produce corresponding radiofrequency signal according to ISO14443 protocol modulation;
When the data inputted are crash data, producing cannot by the rf modulated signal of reader identification.
The method of 12. duplex radio frequency front ends as claimed in claim 9, is characterized in that, described card reader, when receiving the rf modulated signal of None-identified, regenerates the Card Reader instruction that comprises noncontact protocol element connection identifier (CID and the step exported comprises:
Generate anti-collision instruction and be sent to Multiplexing Unit;
Described noncontact protocol element receives the card reader instruction of distribution and resolves this instruction, the step sending response data according to analysis result comprises: resolve the anti-collision instruction received, and sends response instruction when this anti-collision instruction is the information pointing to this unit; This response instruction comprises user identity proves information.
The method of 13. duplex radio frequency front ends as claimed in claim 12, is characterized in that, the instruction of described generation anti-collision is also sent to Multiplexing Unit and comprises further:
The response instruction received is detected, and proves that information generates the anti-collision instruction of corresponding described some noncontact protocol element according to the user identity in response instruction.
The method of 14. duplex radio frequency front ends as claimed in claim 9, is characterized in that, described card reader, when receiving the rf modulated signal of None-identified, regenerates the Card Reader instruction that comprises noncontact protocol element connection identifier (CID and the step exported comprises:
Generate the selection instruction pointing to a certain noncontact protocol element;
Described noncontact protocol element receives the card reader instruction of distribution and resolves this instruction, and the step sending response data according to analysis result comprises:
The selection instruction received is detected, sends response instruction when selection instruction is the instruction pointing to this unit, when selection instruction is the instruction of non-this unit of sensing, discard processing is done to this selection instruction.
The method of 15. duplex radio frequency front ends as claimed in claim 9, is characterized in that, described card reader, when receiving the rf modulated signal of None-identified, regenerates the Card Reader instruction that comprises noncontact protocol element connection identifier (CID and the step exported comprises:
Generate the request selecting response instruction pointing to a certain noncontact protocol element;
Described noncontact protocol element receives the card reader instruction of distribution and resolves this instruction, and the step sending response data according to analysis result comprises:
The request selecting response instruction received is detected, the processing instruction when request selecting response instruction is the instruction pointing to this unit also returns response message, ignores this request selecting response instruction when request selecting response instruction is the instruction of non-this unit of sensing.
The method of 16. duplex radio frequency front ends according to any one of claim 9 to 15, is characterized in that, the card reader instruction that described noncontact protocol element receives distribution is also resolved this instruction, and the step sending response data according to analysis result also comprises:
Frame synchronization and slot synchronization process are carried out to the data received, and send response data on time slot after treatment.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310413017.5A CN104426572A (en) | 2013-09-11 | 2013-09-11 | Method and system for multiplexing radio-frequency front end |
| PCT/CN2014/080544 WO2015035815A1 (en) | 2013-09-11 | 2014-06-23 | Method and system for multiplexing radio-frequency front-end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310413017.5A CN104426572A (en) | 2013-09-11 | 2013-09-11 | Method and system for multiplexing radio-frequency front end |
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| WO2015035815A1 (en) | 2015-03-19 |
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