CN108040331A - The communication means and system of a kind of NFC device - Google Patents
The communication means and system of a kind of NFC device Download PDFInfo
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- CN108040331A CN108040331A CN201711396124.6A CN201711396124A CN108040331A CN 108040331 A CN108040331 A CN 108040331A CN 201711396124 A CN201711396124 A CN 201711396124A CN 108040331 A CN108040331 A CN 108040331A
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- initiating equipment
- signal
- transmission
- secondary signal
- connection
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Abstract
The invention discloses the communication means and system of a kind of NFC device, to solve in existing NFC device communication process, the problem of initiating equipment connects unstable data easy to be lost with target device.This method includes：Obtain the first signal of the request connection of initiating equipment transmission；Judge whether to be attached with the initiating equipment, if so, returning to the secondary signal for agreeing to connection with the transmission speed of the initiating equipment；Judge whether the initiating equipment confirms to receive the secondary signal, start if it is not, extending the secondary signal to next transmit cycle.For the present invention in the case of initiating equipment periodicity sending, target device extends signal sending time, can stably establish the connection of initiating equipment and target device, avoid the loss of data.
Description
Technical field
The present invention relates to the communication means and system of wireless communication technology field, more particularly to a kind of NFC device.
Background technology
NFC, i.e. near field communication (NFC), this technology identify that (RFID) is developed by non-contact radio-frequency, by
Philips Semiconductors (Xian Enzhi Pus semiconductor company), Nokia and Sony develop jointly, its basis is RFID and interconnection
Technology.Near-field communication NFC is a kind of radiotechnics of short distance high frequency, is run in 13.56MHz frequencies in 10 cm distances.
Its transmission speed has 106Kbit/ seconds, 212Kbit/ seconds or three kinds of 424Kbit/ seconds.At present near-field communication by as
102 190 standard of 18092 international standards of ISO/IEC IS, ECMA-340 standards and ETSI TS.NFC is using actively and passively
Two kinds of read modes.
NFC technology is by non-contact radio-frequency to identify (RFID) and Technology Integration differentiation of interconnecting,
Combining induction card reader, icah wavw and point-to-point function on one chip, can be in short distance and compatible equipment
It is identified and data exchange.Working frequency is 13.56MHz, but must be replaced using the user of this mobile-phone payment scheme
Special mobile phone.This technology is widely used in Japan and Korea S at present, their mobile phone may be used as airport boarding verification, mansion
Gate inhibition's key, traffic all-purpose card, credit card, Payment Card etc..
But the initiating equipment of existing NFC device connects unstable, holding under active communication state with target device
During hand, the signal not confirmed reception that target device is sent will stop sending.Transmit unstable, data easy to be lost.
The content of the invention
The technical problem to be solved in the present invention purpose is the communication means and system for providing a kind of NFC device, to solve
In certainly existing NFC device communication process, the problem of initiating equipment connects unstable data easy to be lost with target device.
To achieve these goals, the technical solution adopted by the present invention is：
A kind of communication means of NFC device, including step：
Obtain the first signal of the request connection of initiating equipment transmission；
Judge whether to be attached with the initiating equipment, agree to if so, being returned with the transmission speed of the initiating equipment
The secondary signal of connection；
Judge whether the initiating equipment confirms to receive the secondary signal, if it is not, extending the secondary signal to next
A transmit cycle starts.
Further, step is further included：
If the initiating equipment confirms to receive the secondary signal, stop the transmission of target device.
Further, the step of the first signal of the request connection for obtaining initiating equipment transmission specifically includes：
The first signal of the request connection of the initiating equipment transmission is obtained every prefixed time interval.
A kind of communication system of NFC device, including：
Acquisition module, the first signal of the request connection for obtaining initiating equipment transmission；
Module is returned to, for judging whether to be attached with the initiating equipment, if so, the transmission with the initiating equipment
Speed returns to the secondary signal for agreeing to connection；
Extend module, for judging whether the initiating equipment confirms to receive the secondary signal, if it is not, extending described the
Binary signal to next transmit cycle starts.
Further, further include：
Stopping modular, if confirming to receive the secondary signal for the initiating equipment, stops the transmission of target device.
Further, the acquisition module specifically includes：
Periodic unit, the first letter of the request connection for obtaining the initiating equipment transmission every prefixed time interval
Number.
It is of the invention compared with traditional technology, have the following advantages：
For the present invention in the case of initiating equipment periodicity sending, target device extends signal sending time, can stablize
The connection of initiating equipment and target device is established on ground, avoids the loss of data.
Brief description of the drawings
Fig. 1 is a kind of communication means flow chart for NFC device that embodiment one provides；
Fig. 2 is a kind of communication system architecture figure for NFC device that embodiment two provides.
Embodiment
It is the specific embodiment of the present invention and with reference to attached drawing below, technical scheme is further described,
But the present invention is not limited to these embodiments.
Embodiment one
A kind of communication means of NFC device is present embodiments provided, as shown in Figure 1, including step：
S11：Obtain the first signal of the request connection of initiating equipment transmission；
S12：Judge whether to be attached with initiating equipment, agree to connection if so, being returned with the transmission speed of initiating equipment
Secondary signal；
S13：Judge whether initiating equipment confirms to receive secondary signal, if it is not, extending secondary signal to next transmitting week
Phase starts.
S14：If initiating equipment confirms to receive secondary signal, stop the transmission of target device.
The present embodiment is in the case of the request connection of initiating equipment periodicity sending, when target device extends signal transmission
Between, until the transmit cycle of next initiating equipment.Compared with prior art, the connection of initiating equipment and target device is steady with family
It is fixed, avoid the loss of data.
In the present embodiment, step S11 is the first signal of the request connection for obtaining initiating equipment transmission.
Wherein, step S11 is specifically included：
The first signal of the request connection of initiating equipment transmission is obtained every prefixed time interval.
Specifically, data can be exchanged under actively or passively pattern by supporting the equipment of NFC.In the passive mode, start
The equipment of NFC communication, also referred to as NFC initiating equipments (main equipment), provide radiofrequency field (RF- in whole communication process
Field),.It can select 106kbps, 212kbps or 424kbps one of which transmission speed, transmit data to another
Equipment.Another equipment is known as NFC target devices (slave device), it is not necessary to produces radiofrequency field, and uses load modulation (load
Modulation) technology, you can initiating equipment back is passed data with identical speed.This communication mechanism with based on ISO14443A,
The contact type intelligent card of MIFARE and FeliCa is compatible, and therefore, NFC initiating equipments in the passive mode, can be with identical
Connection and initialization procedure detection contact type intelligent card or NFC target devices, and contact is established therewith.
The initiating equipment of NFC first sends the first signal of request connection to target device.First signal of the present embodiment is
Periodicity sending.
In the present embodiment, step S12 is judges whether to be attached with initiating equipment, if so, the transmission with initiating equipment
Speed returns to the secondary signal for agreeing to connection.
If specifically, allowing to be attached with initiating equipment, returned with the transmission speed of initiating equipment and agree to connection
Secondary signal.Initiating equipment and target device proceed by connection.
In the present embodiment, step S13 is judges whether initiating equipment confirms to receive secondary signal, if it is not, extending the second letter
Number start to next transmit cycle.
Specifically, target device is to secondary signal, whether transmission success judges.Target device judges that initiating equipment is
It is no to confirm to receive secondary signal.If being not received by, extend secondary signal be transmitted to that next transmit cycle starts when
Wait.During so can be to avoid the hand that is in one's hands, the signal not confirmed that target device is sent receives just stopping transmission, causes data
Loss.
In the present embodiment, confirm to receive secondary signal if step S14 is initiating equipment, stop the transmission of target device.
If specifically, have received the confirmation message of initiating equipment, stop transmission of the target device to initiating equipment.
The present embodiment is in the case where initiating equipment periodically initiates request connection, when target device extension signal is sent
Between, it is known that the transmit cycle of next initiating equipment.Initiating equipment and target device can be made more stably to connect, avoided
The loss of data.
Embodiment two
A kind of communication system of NFC device is present embodiments provided, as shown in Fig. 2, including：
Acquisition module 21, the first signal of the request connection for obtaining initiating equipment transmission；
Module 22 is returned to, for judging whether to be attached with initiating equipment, if so, being returned with the transmission speed of initiating equipment
Return the secondary signal for agreeing to connection；
Extend module 23, for judging whether initiating equipment confirms to receive secondary signal, if it is not, extending secondary signal under
One transmit cycle starts.
Stopping modular 24, if confirming to receive secondary signal for initiating equipment, stops the transmission of target device.
The present embodiment is in the case of the request connection of initiating equipment periodicity sending, when target device extends signal transmission
Between, until the transmit cycle of next initiating equipment.Compared with prior art, the connection of initiating equipment and target device is steady with family
It is fixed, avoid the loss of data.
In the present embodiment, acquisition module 21 is used for the first signal of the request connection for obtaining initiating equipment transmission.
Wherein, acquisition module 21 specifically includes：
The first signal of the request connection of initiating equipment transmission is obtained every prefixed time interval.
Specifically, data can be exchanged under actively or passively pattern by supporting the equipment of NFC.In the passive mode, start
The equipment of NFC communication, also referred to as NFC initiating equipments (main equipment), provide radiofrequency field (RF-field) in whole communication process,
It can select 106kbps, 212kbps or 424kbps one of which transmission speed, transmit data to another equipment.Separately
One equipment is known as NFC target devices (slave device), it is not necessary to produces radiofrequency field, and uses load modulation (load
Modulation) technology, you can initiating equipment back is passed data with identical speed.This communication mechanism with based on ISO14443A,
The contact type intelligent card of MIFARE and FeliCa is compatible, and therefore, NFC initiating equipments in the passive mode, can be with identical
Connection and initialization procedure detection contact type intelligent card or NFC target devices, and contact is established therewith.
The initiating equipment of NFC first sends the first signal of request connection to target device.First signal of the present embodiment is
Periodicity sending.
In the present embodiment, return to module 22 and be used to judge whether to be attached with initiating equipment, if so, with initiating equipment
Transmission speed returns to the secondary signal for agreeing to connection.
If specifically, allowing to be attached with initiating equipment, returned with the transmission speed of initiating equipment and agree to connection
Secondary signal.Initiating equipment and target device proceed by connection.
In the present embodiment, extend module 23 and be used to judge whether initiating equipment confirms to receive secondary signal, if it is not, extending the
Binary signal to next transmit cycle starts.
Specifically, target device is to secondary signal, whether transmission success judges.Target device judges that initiating equipment is
It is no to confirm to receive secondary signal.If being not received by, extend secondary signal be transmitted to that next transmit cycle starts when
Wait.During so can be to avoid the hand that is in one's hands, the signal not confirmed that target device is sent receives just stopping transmission, causes data
Loss.
In the present embodiment, if stopping modular 24 is used for initiating equipment and confirms to receive secondary signal, stop target device
Transmission.
If specifically, have received the confirmation message of initiating equipment, stop transmission of the target device to initiating equipment.
The present embodiment is in the case where initiating equipment periodically initiates request connection, when target device extension signal is sent
Between, it is known that the transmit cycle of next initiating equipment.Initiating equipment and target device can be made more stably to connect, avoided
The loss of data.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology belonging to the present invention is led
The technical staff in domain can do various modifications or additions to described specific embodiment or replace in a similar way
Generation, but without departing from spirit of the invention or beyond the scope of the appended claims.
Claims (6)
1. a kind of communication means of NFC device, it is characterised in that including step：
Obtain the first signal of the request connection of initiating equipment transmission；
Judge whether to be attached with the initiating equipment, agree to connection if so, being returned with the transmission speed of the initiating equipment
Secondary signal；
Judge whether the initiating equipment confirms to receive the secondary signal, if it is not, extending the secondary signal to next hair
Penetrating the cycle starts.
2. the communication means of a kind of NFC device according to claim 1, it is characterised in that further include step：
If the initiating equipment confirms to receive the secondary signal, stop the transmission of target device.
3. the communication means of a kind of NFC device according to claim 1, it is characterised in that the acquisition initiating equipment passes
The step of first signal of defeated request connection, specifically includes：
The first signal of the request connection of the initiating equipment transmission is obtained every prefixed time interval.
A kind of 4. communication system of NFC device, it is characterised in that including：
Acquisition module, the first signal of the request connection for obtaining initiating equipment transmission；
Module is returned to, for judging whether to be attached with the initiating equipment, if so, the transmission speed with the initiating equipment
Return to the secondary signal for agreeing to connection；
Extend module, for judging whether the initiating equipment confirms to receive the secondary signal, if it is not, extending second letter
Number start to next transmit cycle.
5. the communication system of a kind of NFC device according to claim 4, it is characterised in that further include：
Stopping modular, if confirming to receive the secondary signal for the initiating equipment, stops the transmission of target device.
6. the communication system of a kind of NFC device according to claim 4, it is characterised in that the acquisition module specifically wraps
Include：
Periodic unit, the first signal of the request connection for obtaining the initiating equipment transmission every prefixed time interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711396124.6A CN108040331A (en) | 2017-12-21 | 2017-12-21 | The communication means and system of a kind of NFC device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711396124.6A CN108040331A (en) | 2017-12-21 | 2017-12-21 | The communication means and system of a kind of NFC device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108040331A true CN108040331A (en) | 2018-05-15 |
Family
ID=62100473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711396124.6A Pending CN108040331A (en) | 2017-12-21 | 2017-12-21 | The communication means and system of a kind of NFC device |
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| CN103945563A (en) * | 2014-04-11 | 2014-07-23 | 中国科学院计算技术研究所 | No-target user detection method in Device to Device communication |
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2017
- 2017-12-21 CN CN201711396124.6A patent/CN108040331A/en active Pending
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| CN102457916A (en) * | 2010-10-20 | 2012-05-16 | 诺基亚公司 | Delayed and conditional transport switch |
| CN103024736A (en) * | 2011-09-28 | 2013-04-03 | 国民技术股份有限公司 | Communication connecting method and device |
| CN103138806A (en) * | 2011-11-25 | 2013-06-05 | 索尼爱立信移动通讯有限公司 | Connection establishing method, connection establishing module and terminal device |
| CN103916979A (en) * | 2012-12-28 | 2014-07-09 | 佳能株式会社 | Information Processing Apparatus And Control Method Thereof |
| CN103945563A (en) * | 2014-04-11 | 2014-07-23 | 中国科学院计算技术研究所 | No-target user detection method in Device to Device communication |
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Application publication date: 20180515 |
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