WO2010012130A1 - Système et procédé de vérification d’une distance de communication en radiofréquence d’un terminal mobile - Google Patents

Système et procédé de vérification d’une distance de communication en radiofréquence d’un terminal mobile Download PDF

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Publication number
WO2010012130A1
WO2010012130A1 PCT/CN2008/001837 CN2008001837W WO2010012130A1 WO 2010012130 A1 WO2010012130 A1 WO 2010012130A1 CN 2008001837 W CN2008001837 W CN 2008001837W WO 2010012130 A1 WO2010012130 A1 WO 2010012130A1
Authority
WO
WIPO (PCT)
Prior art keywords
radio frequency
mobile terminal
control terminal
field strength
frequency control
Prior art date
Application number
PCT/CN2008/001837
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English (en)
Chinese (zh)
Inventor
余运波
Original Assignee
深圳市中兴集成电路设计有限责任公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市中兴集成电路设计有限责任公司 filed Critical 深圳市中兴集成电路设计有限责任公司
Publication of WO2010012130A1 publication Critical patent/WO2010012130A1/fr
Priority to US12/949,453 priority Critical patent/US8929805B2/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
    • G01S11/02—Systems for determining distance or velocity not using reflection or reradiation using radio waves
    • G01S11/06—Systems for determining distance or velocity not using reflection or reradiation using radio waves using intensity measurements

Definitions

  • This invention relates to record carriers for use with machines, and more particularly to record carriers with semiconductor circuit components, and more particularly to a system and method for controlling the radio frequency communication distance of a mobile terminal. Background technique
  • Radio frequency communication terminals (referred to as "mobile phones”) have become very popular in real life. By adapting them to have close-range communication functions, the demand for functions such as mobile payment is becoming more and more intense. At present, the user identification module SIM card has appeared.
  • the method of adding RF function (becoming RF SIM) or adding a short-range communication module on the mobile phone motherboard to realize close-range communication of the mobile phone the appearance of this method makes the mobile phone become a super smart with recharge, consumption, transaction and identity authentication functions.
  • the terminal greatly meets the urgent needs of the market.
  • the RF SIM-based mobile phone short-range communication solution has received extensive attention because of its simplicity and no need to change the mobile phone.
  • the RF SIM adopts UHF technology to enable the RF signal to be transmitted from the mobile phone, thereby eliminating the need for Transforming the phone will enable the phone to have close-range communication capabilities.
  • the shielding effect of different mobile phones is very different, the mobile terminal with poor shielding effect has a high transmission intensity of the radio frequency signal, and the communication distance can even reach about 1 meter.
  • the mobile terminal with good shielding effect has a small transmission intensity of the radio frequency signal, which may cause Data cannot be sent and received normally, and it cannot be completed. Therefore, it is very difficult to accurately control the distance covered by the RF signal for various types of mobile terminals.
  • the existing technology for controlling the distance of radio frequency communication so that it does not exceed the specified value is only passive sensing technology, such as the non-contact card technical specification specified in the IS014443 protocol and the RFID technical specification specified in ISO18000. These technologies are characterized by no card side. The source can only work by sensing the energy from the reader side coupling to achieve communication with the card reader.
  • the RF SIM-based mobile phone short-range communication uses an active mode, and basically uses the UHF band, which makes it impossible to use passive technology to control the communication distance, because the UHF band RF signal has a strong wear. Through the ability, its distance control problem is more prominent.
  • the communication distance can be controlled by adjusting the radio frequency signal emission intensity of the mobile phone and the receiving sensitivity of the card reader, but this method is difficult to achieve reliable near due to various factors such as standing wave and signal reflection. Distance communication, in particular, cannot prevent malicious data communication attacks.
  • Radio frequency SIM-based mobile phone short-range communication uses an active mode, and basically uses the UHF band, and cannot use passive technology to control its communication distance;
  • the method of controlling the communication distance by adjusting the RF signal emission intensity of the mobile phone and the receiving sensitivity of the card reader is difficult to achieve reliable short-range communication due to various factors such as standing wave and signal reflection, especially if it cannot prevent malicious Data communication attack.
  • This RF near-field distribution is called near-field spectrum; and its near-field RF signal
  • the field strength is distributed as a distribution, and the field strength distribution is independent of the type of RF communication terminal.
  • the present invention proposes a simple and low-cost solution, which can reliably control the data communication distance between the radio communication terminal and the radio frequency communication device in the near field range, thereby ensuring transaction security. It can even completely eliminate the threat of attacks such as remote malicious data communication. Summary of the invention
  • the technical problem to be solved by the present invention is to avoid a disadvantage of the above prior art and to propose a system and method for controlling the radio frequency communication distance of a mobile terminal.
  • the invention is a simple, low-cost and reliable solution to the problem of distance control of short-range communication of radio frequency communication terminals recently, and the method can not only reliably realize the distance control of data communication in the near field. Within the scope, and can fundamentally eliminate the threat of attacks such as remote malicious data communication.
  • the invention provides a system for controlling a radio frequency communication distance of a mobile terminal, in particular, a radio frequency mobile terminal and a radio frequency control terminal including a radio frequency SIM card;
  • the radio frequency control terminal receives the signal field strength of the radio frequency mobile terminal and detects the distribution of the signal field strength; the radio frequency control terminal determines whether the radio frequency mobile terminal is in the setting by performing mathematical analysis and calculation on the field strength distribution according to the specified requirements. Within the scope of communication.
  • the radio frequency control terminal includes a detector array and a host system, and each of the host system and the detector array The detector is connected to have the ability to acquire, calculate, and process the field strength value and its distribution law; the shape of each detector in the detector array includes a circle, a ring, a stick, an arc, a w, or a square;
  • the detectors in the detector array can be made of ceramic, magnetic or copper materials.
  • the detector array is composed of N detectors that are 360°/N in geometrical position outside the RF control terminal, and is also detected by the N geometrically located 360°/N in the RF control terminal.
  • the host system is implemented by a single chip microcomputer system.
  • the present invention solves the technical problem, and can further implement the following technical solution, a method for controlling a radio frequency communication distance of a mobile terminal, based on a system for controlling a radio frequency communication distance of a mobile terminal, where the system includes a radio frequency SIM
  • the radio frequency mobile terminal and the radio frequency control terminal of the card comprising the steps of:
  • step D Compare the matching degree obtained in step C with the correlation threshold value of the corresponding type of radio frequency mobile terminal preset in the radio frequency control terminal, so as to determine whether the distance between the current radio frequency mobile terminal and the radio frequency control terminal is within a specified range.
  • the near-field map reflects the correspondence between the distance ⁇ of different types of radio frequency mobile terminals and the radio frequency control terminal and the signal field strength of each detector in the corresponding detector array.
  • the field strength measurement values are arranged in a series, and the elements in the series are calculated to obtain the field strength field strength ⁇ of the RF mobile terminal at the point when the distance from the RF control terminal is ⁇ ;
  • the field strength of the current radio frequency mobile terminal is also a set of series, and the elements in the sequence are tested for field strength values by detectors in the detector array.
  • the matching algorithm may be performing average calculation, variance calculation or a combination thereof.
  • the elements in the series can be measured once in the test, or they can be taken after multiple measurements in the test.
  • the threshold value for comparison may be set in advance on the radio frequency control terminal according to actual conditions, or may be stored in the radio frequency mobile terminal, and the radio frequency control terminal is notified when establishing communication.
  • the near-field map and the elements of the field strength corresponding series of the current radio frequency mobile terminal are arranged in the same order.
  • the beneficial effects of the present invention are: 1.
  • the solution of the invention is simple and easy to operate and low in cost;
  • the solution of the invention can reliably control the data communication distance between the radio frequency communication terminal and the radio frequency communication device in the near field range, ensure the security of the transaction, and even fundamentally eliminate the threat of attacks such as remote malicious data communication.
  • Figure 1 is a schematic view showing the application of the system of the present invention
  • 2 is a schematic diagram of the composition of the radio frequency control terminal
  • Figure 3 is a plot of field strength versus distance for a radio frequency mobile terminal
  • Figure 4 is a diagram showing an example of a spectrum of a radio frequency mobile terminal at a distance from the radio frequency control terminal ⁇ - !
  • Figure 5 shows the RF mobile terminal at a distance from the RF control terminal ⁇ 0 whose field is stronger than ⁇ . Diagram of the map;
  • Figure 6 shows the RF mobile terminal at the distance from the RF control terminal ⁇ ! On the distance, its field is stronger than ⁇ ! Diagram of the map;
  • FIG. 7 is a schematic diagram of a detector array distribution of a radio frequency control terminal. detailed description
  • a system 10 for controlling the radio frequency communication distance of a mobile terminal includes a radio frequency mobile terminal 12 and a radio frequency control terminal 13 including a radio frequency SIM card 11;
  • the radio frequency control terminal 13 receives the signal field strength of the radio frequency mobile terminal 12 and detects the distribution of the signal field strength; the radio frequency control terminal 13 determines the radio frequency mobile terminal 12 by performing mathematical analysis and calculation on the field strength distribution according to the specified requirements. Whether it is within the set communication range.
  • the radio frequency control terminal 13 includes a detector array 131 and a host system 132.
  • the host system 132 is electrically connected to the detectors of the detector array 131, and has the ability to acquire, calculate, and process field strength values and their distribution laws;
  • each detector in the detector array 131 includes a circular shape, a circular shape, a stick shape, an arc shape, a W shape or a square shape; and the detectors in the detector array 131 can be made of ceramic or magnetic. Made of material or copper material.
  • the detector array 131 is composed of N detectors 1311 that are 360°/N in geometrical position outside the radio frequency control terminal 13, and is also 360° in the geometrical position of the radio frequency control terminal 13 by 360°.
  • the detector 13 of N consists of a positive integer with N > 2 here.
  • N 3, that is, three detectors are used, and the detector array 131 is composed of three 120-degree detectors 1311 outside the radio frequency control terminal 13 at the radio frequency control terminal 13.
  • the interior is also composed of three detectors 1312 that are 120 degrees apart.
  • the host system 132 is implemented using a single chip system.
  • the technical solution may also be a method for controlling the radio frequency communication distance of the mobile terminal, based on a system 10 for controlling the radio frequency communication distance of the mobile terminal, the system including the radio frequency SIM card
  • the RF mobile terminal 12 and the RF control terminal 13 of the 11th include the steps of:
  • step D Comparing the matching degree obtained in step C with the correlation degree threshold value of the corresponding type radio frequency mobile terminal 12 preset in the radio frequency control terminal 13, thereby determining whether the distance between the current radio frequency mobile terminal 12 and the radio frequency control terminal 13 is Within the prescribed range.
  • the near-field map reflects the correspondence between the distance ⁇ of different types of radio frequency mobile terminals 12 and the radio frequency control terminal 13 and the signal field strength of each detector in the corresponding detector array.
  • the field strength measurement value of the detector is arranged in a sequence at the point, and the elements of the series are calculated to obtain the field strength field strength ⁇ of the RF mobile terminal 12 at the point when the distance from the RF control terminal 13 is ⁇ ;
  • the field strength of the current radio frequency mobile terminal 12 is also a set of series, and the elements in the sequence are the field strength values of the detectors in the detector array 131.
  • the matching algorithm may be performing average calculation, variance calculation or a combination thereof.
  • the elements in the series can be measured once in the test, or they can be averaged after multiple measurements in the test.
  • the threshold value for comparison may be preset on the radio frequency control terminal according to actual conditions.
  • the setting may also be stored in the radio frequency mobile terminal 12, and the radio frequency control terminal 13 is informed when the communication is established.
  • the near-field map and the elements of the field strength corresponding sequence of the current radio frequency mobile terminal 12 are arranged in the same order.
  • 401 represents the position projection range of the radio frequency mobile terminal 12 when communicating with the radio frequency control terminal 13, and the area represented by 501 in FIGS. 4 and 7 is the radio frequency mobile terminal 12 at the distance from the radio frequency control terminal 13 as ⁇ -!
  • the area represented by 502 in FIGS. 5 and 7 is the radio frequency mobile terminal 12 at the distance from the radio frequency control terminal 13 being ⁇ .
  • the area represented by 503 in FIGS. 6 and 7 is the radio frequency mobile terminal 12 at the distance from the radio frequency control terminal 13 is ⁇ !
  • the distribution of the spectrum is
  • the approximate position of the required RF mobile terminal 12 in communication is first set in the detector array 131.
  • the 120-degree detector array 1312 and the outer three 120-degree detector arrays 1311 wherein the internal detector array is less than ⁇ - ! from the center of the RF mobile terminal 12, and the external detector array is separated from the RF
  • the average distance of the center of the mobile terminal 12 is greater than ⁇ ⁇ .
  • each detector is connected to the RF receiving device, and the same effect can be obtained by using the error rate of the received RF signal or the communication success rate.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L’invention concerne un système (10) et un procédé permettant de vérifier une distance de communication en radiofréquence d’un terminal mobile. Le procédé comprend les étapes suivantes : un profil en champ proche correspondant à chaque type de terminal mobile (12) à radiofréquence est tout d’abord créé dans le terminal de vérification (13) à radiofréquence par une expérience; la force du champ du terminal mobile (12) à radiofréquence détectée par un réseau de détecteurs est mise ensuite en correspondance avec le profil en champ proche du terminal mobile (12) à radiofréquence par un algorithme d’appariement afin d’obtenir un degré de correspondance utilisé pour la comparaison; finalement, le degré de correspondance obtenu est comparé à une valeur seuil prédéterminée correspondant au type de terminal mobile (13) à radiofréquence afin de déterminer si la distance entre le terminal mobile (12) à radiofréquence et le terminal de vérification (13) à radiofréquence se trouve dans la plage de communication fixée, la valeur seuil prédéterminée étant préréglée dans le terminal de vérification (13) à radiofréquence.
PCT/CN2008/001837 2007-10-30 2008-11-03 Système et procédé de vérification d’une distance de communication en radiofréquence d’un terminal mobile WO2010012130A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/949,453 US8929805B2 (en) 2007-10-30 2010-11-18 System, method, and device for radio frequency communication

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2008101426241A CN101334470B (zh) 2008-07-29 2008-07-29 一种控制移动终端射频通信距离的系统和方法
CN200810142624.1 2008-07-29

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2008/001913 Continuation-In-Part WO2009140809A1 (fr) 2007-10-30 2008-11-24 Système pouvant simultanément effectuer des communications sur courte distance et des communications sur longue distance

Related Child Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2008/001774 Continuation-In-Part WO2009140806A1 (fr) 2007-10-30 2008-10-21 Dispositif de conversion en lecture/écriture d’une carte à puce radiofréquence

Publications (1)

Publication Number Publication Date
WO2010012130A1 true WO2010012130A1 (fr) 2010-02-04

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CN (1) CN101334470B (fr)
WO (1) WO2010012130A1 (fr)

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CN101335956B (zh) * 2008-08-05 2011-10-05 国民技术股份有限公司 借助误码率统计数据判断通信距离的系统和方法
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CN101996301B (zh) * 2009-08-24 2012-10-03 国民技术股份有限公司 通讯距离的控制方法及射频读卡装置
CN102024290B (zh) * 2009-09-23 2014-01-15 国民技术股份有限公司 控制射频通信距离的方法及系统
CN102034064B (zh) * 2009-09-28 2014-11-26 东信和平科技股份有限公司 应用电容感应控制射频sim卡通讯距离的方法和装置
CN102034070B (zh) * 2009-09-28 2013-06-12 东信和平科技股份有限公司 一种射频智能卡通信距离的控制方法
CN102215051B (zh) * 2010-04-02 2013-08-28 国民技术股份有限公司 一种利用低频磁通信的射频sim卡启动交易的距离门限判断方法
CN101944959A (zh) * 2010-07-01 2011-01-12 北京泛在电子标签技术有限公司 基于距离控制的无线近距离通讯方法和系统
CN102412869B (zh) * 2010-09-21 2014-05-28 国民技术股份有限公司 控制通信范围的快速接入近距无线通信系统和方法
CN102487320B (zh) * 2010-12-06 2014-12-03 国民技术股份有限公司 一种自动柜员机身份认证的方法和系统
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CN102254135B (zh) * 2011-06-21 2014-01-29 国民技术股份有限公司 一种距离控制方法、装置及系统
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