WO2011120242A1 - 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 - Google Patents

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 Download PDF

Info

Publication number
WO2011120242A1
WO2011120242A1 PCT/CN2010/071822 CN2010071822W WO2011120242A1 WO 2011120242 A1 WO2011120242 A1 WO 2011120242A1 CN 2010071822 W CN2010071822 W CN 2010071822W WO 2011120242 A1 WO2011120242 A1 WO 2011120242A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnetic field
low
frequency magnetic
threshold
transaction
Prior art date
Application number
PCT/CN2010/071822
Other languages
English (en)
French (fr)
Inventor
蒋宇
Original Assignee
国民技术股份有限公司
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 国民技术股份有限公司 filed Critical 国民技术股份有限公司
Priority to US13/638,252 priority Critical patent/US9002269B2/en
Publication of WO2011120242A1 publication Critical patent/WO2011120242A1/zh

Links

Classifications

    • 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
    • G06K7/10118—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 the sensing being preceded by at least one preliminary step
    • G06K7/10128—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 the sensing being preceded by at least one preliminary step the step consisting of detection of the presence of one or more record carriers in the vicinity of the interrogation device

Definitions

  • the present invention relates to the field of communications, and in particular, to a distance threshold determination method for starting a transaction using a radio frequency SIM card of low frequency magnetic communication. Background technique
  • SIM Subscribescr iber Ident I ty Model
  • the IM card is a SIM card with low frequency magnetic communication and radio frequency communication functions, including a card body and an integrated circuit in the card body.
  • the SIM card of the low frequency magnetic communication radio frequency SIM card is provided with a SIM card interface that can be matched with the mobile communication terminal.
  • the integrated circuit in the card body includes a central processing unit CPU, a low frequency magnetic induction circuit electrically connected to the central processing unit CPU, and low frequency magnetic information receiving.
  • the low frequency magnetic communication radio frequency IM card is electrically connected to the mobile communication terminal through its own interface circuit and the SIM card interface on the card body.
  • the low frequency magnetic communication radio frequency SIM card can not only communicate with the mobile communication terminal to realize the function of the ordinary SIM card, but also can pass the low frequency magnetic induction circuit and the low frequency magnetic information receiving module, the radio frequency transceiver circuit and the interface circuit and the supporting external processing device (for example, reading the card) For close communication.
  • the short-range communication process and content are specifically handled by the central processing unit CPU in the low frequency magnetic flux RF SIM card.
  • the low frequency magnetic communication radio frequency SIM card is mostly used for mobile phones, except for all the functions of the conventional SIM card.
  • the mobile phone can also have the functions of a smart card such as a bus pass card, an access control card, a credit card, a micropayment card, a time card, etc., and the information generated during the use of various smart cards can be directly displayed on the screen of the mobile phone. The user completes various operations through the keyboard of the mobile phone.
  • the low frequency magnetic communication radio frequency SIM card When the low frequency magnetic communication radio frequency SIM card is used as a smart card such as a bus pass card, an access control communication card, a credit card, a micropayment card, a time card, etc., in order to avoid misreading card operation and misreading card operation, the low frequency magnetic communication radio frequency S is installed.
  • the distance between the mobile communication terminal of the IM card and the effective data transmission of the card reader, that is, the distance for starting the transaction must be controlled within a certain range, and the SIM card enters the transaction area, and the transaction speed should not be exceeded; otherwise Affect the user's use.
  • the technical problem to be solved by the present invention is to provide a distance threshold determination method for starting a transaction of a radio frequency S I M card using low frequency magnetic communication, which shortens the startup transaction time of the low frequency magnetic communication radio SIM card, reduces the time for user card swipe, and improves the user experience.
  • the present invention provides a distance threshold determination method for starting a transaction using a radio frequency SIM card of low frequency magnetic communication, and the distance control of the radio frequency SIM card for short-distance communication with a corresponding card reader through a low frequency channel,
  • the method for determining a distance threshold for initiating a transaction by using a radio frequency S IM card using low frequency magnetic communication includes:
  • Step a setting a first threshold to a low frequency magnetic field strength value corresponding to a distance at which the transaction is initiated, a second threshold being a low frequency magnetic field strength value corresponding to a low frequency magnetic field effective communication distance, and a third threshold being a low frequency magnetic field strength value corresponding to the farthest transaction distance,
  • the first threshold is greater than or equal to a third threshold
  • the third threshold is greater than or equal to a second threshold
  • the radio frequency SIM card continuously detects the low frequency magnetic field strength sent by the card reader, determines whether the low frequency magnetic field strength is greater than or equal to the second threshold, and if so, receives and stores the low frequency magnetic field information
  • Step c the RF SIM card further determines whether the strength of the low frequency magnetic field emitted by the card reader is greater than or equal to the first threshold, and if so, the RF SIM card initiates a transaction process;
  • Step d In the transaction process, the radio frequency SIM card detects the low frequency magnetic field strength emitted by the card reader and determines whether it is less than the third threshold, and if so, interrupts the transaction.
  • the foregoing method may further have the following features.
  • the determining steps of the first threshold, the second threshold, and the third threshold are:
  • the low-frequency magnetic field intensity corresponding to the distance at which the transaction is initiated is set as the first threshold; according to the low-frequency magnetic field communication rate, the low-frequency magnetic field is required in combination with the RF SIM card application.
  • the amount of data transmitted calculate the effective communication distance of the low-frequency magnetic field, and set the low-frequency magnetic field strength corresponding to the effective communication distance of the low-frequency magnetic field as the second threshold; according to the requirements of the farthest trading distance control, set the low-frequency magnetic field strength corresponding to the farthest trading distance The value is the third threshold.
  • the above method may further have the following feature.
  • the radio frequency SIM card stops receiving the low frequency magnetic field information and continues to detect the low frequency magnetic field strength emitted by the card reader. .
  • step c if the low frequency magnetic field strength is less than the first threshold, step b is performed.
  • the above method may further have the following feature.
  • the low frequency magnetic field is an alternating magnetic field
  • the frequency of the chirped magnetic field is in a frequency range of 100 Hz to 125 kHz.
  • the above method may further have the following characteristics: the operating frequency of the radio frequency channel is in an ultra high frequency SHF frequency band, a very high frequency VHF frequency band or an ultra high frequency UHF frequency band.
  • the above method may also have the following features: the operating frequency of the radio frequency channel is 433 MHz, 2. 4 GHz or 5 GHz.
  • the method for judging the distance threshold of the radio frequency SIM card using the low frequency magnetic communication of the invention shortens the startup transaction time of the low frequency magnetic communication radio frequency IM card in the short-range communication application, reduces the user's card swiping time, and improves the user Experience.
  • FIG. 1 is a structural diagram of a radio frequency SIM card involved in an embodiment of the present invention
  • FIG. 2 is a structural diagram of a card reader involved in an embodiment of the present invention.
  • FIG. 3 is a flowchart of a distance control process of a radio frequency SIM card in an embodiment of the present invention
  • FIG. 4 is a schematic diagram of an application scenario of a radio frequency SIM card in an embodiment of the present invention.
  • FIG. 6 is a table showing a correspondence relationship between a low frequency magnetic field strength and a distance in an embodiment of the present invention
  • Figure 7 is a schematic diagram showing the relative positions of the threshold 1, the threshold 2, and the threshold 3 in the embodiment of the present invention. detailed description
  • the radio frequency SIM card in the present invention is the aforementioned radio frequency communication radio frequency IM card.
  • 1 is a structural diagram of a radio frequency SIM card involved in an embodiment of the present invention.
  • the low frequency magnetic communication radio frequency SIM card 100 involved in the present invention includes a SIM card module (ie, a SIM card body) 105 , a first RF transceiver module 101 , a first RF antenna 102 , and a first microcontroller 103 .
  • the low frequency magnetic induction and receiving module 104 is electrically connected to the first RF antenna 102 and the first microcontroller 103, and the low frequency magnetic sensing and receiving module 104 is electrically connected to the first microcontroller 103.
  • the card module 105 is electrically connected to the first microcontroller 103.
  • Fig. 2 is a structural diagram of a card reader according to an embodiment of the present invention.
  • the card reader 200 is used in conjunction with the radio frequency SIM card 100 shown in FIG. 1.
  • the card reader 200 includes a second radio frequency transceiver module 201, a second radio frequency antenna 202, a second micro controller 203, and a low frequency.
  • the magnetic transmitting module 204 wherein the second RF transceiver module 201 is electrically connected to the second RF antenna 202 and the second controller 203, respectively, and the low frequency magnetic transmitting module 204 is configured to generate a low frequency induced magnetic field.
  • the low frequency magnetic emission module 204 is electrically coupled to the second microcontroller 203.
  • FIG. 4 is a schematic diagram of an application scenario of a radio frequency SIM card in an embodiment of the present invention. As shown in FIG. 4, when the radio frequency SIM card 100 approaches the card reader 200, the low frequency magnetic induction and receiving module 104 in the radio frequency SIM card 100 senses a suitable low frequency magnetic field generated by the low frequency magnetic emission module 204 in the card reader 200.
  • the low frequency magnetic field signal is converted into an electrical signal and sent to the first microcontroller 103 of the radio frequency SIM card, and the first microcontroller 103 performs corresponding processing according to the change of the low frequency magnetic field strength, thereby implementing the card reader 200 and the radio frequency
  • the communication distance control and information transmission between the SIM card 100; the card reader 200 and the radio frequency SIM card 100 directly implement radio frequency communication through the first radio frequency transceiver module 101 and the second radio frequency transceiver module 201.
  • FIG. 3 is a flowchart of a distance control process of a radio frequency SIM card in an embodiment of the present invention. As shown in FIG. 3, in this embodiment, the distance control process of the radio frequency SIM card includes:
  • Step 301 starting, the RF SIM card is powered on and initialized
  • the basic functions of the SIM card are activated.
  • Step 302 setting a threshold of 1, the threshold 1 is the low frequency magnetic field strength corresponding to the distance at which the transaction is initiated. Value
  • Step 303 setting a threshold 2, and the threshold 2 is a low-frequency magnetic field intensity value corresponding to an effective communication distance of the low-frequency magnetic field;
  • Step 304 Set a threshold 3, and the threshold 3 is a low-frequency magnetic field strength value corresponding to the farthest transaction distance.
  • FIG. 7 is a schematic diagram of relative positions of the threshold 1, the threshold 2, and the threshold 3 in the embodiment of the present invention.
  • the relative position of threshold three (ie, threshold 3) 703 of threshold one (ie, threshold 1) 704, threshold two (ie, threshold 2) 704 is as shown in FIG.
  • the mobile communication terminal 701 equipped with the radio frequency SIM card is located near and far from the card reader 705.
  • Threshold 1 is greater than or equal to threshold 3
  • threshold 3 is greater than or equal to threshold 2.
  • the threshold 1, the threshold 2 and the threshold 3 can be determined by the following steps A and B:
  • FIG. 5 The corresponding relationship between the distance of different mobile communication terminals and the strength of the low frequency magnetic field measured by experiments in the embodiment of the present invention is as shown in FIG. 5.
  • FIG. 6 A correspondence table between the low frequency magnetic field strength and the distance in the embodiment of the present invention is shown in Fig. 6.
  • the low-frequency magnetic field intensity corresponding to the distance at which the transaction is initiated is set to a threshold of 1; according to the low-frequency magnetic field communication rate, the low-frequency magnetic field transmission is required in combination with the RF SIM card application.
  • Step B can be further divided into the following three sub-steps:
  • determining the low-frequency magnetic field intensity value corresponding to the distance at which the transaction is initiated is a threshold 1;
  • the effective communication distance of the low-frequency magnetic field is calculated, and the correspondence table between the intensity and the distance of the low-frequency magnetic field is determined, and the effective communication distance of the low-frequency magnetic field is determined.
  • the low frequency magnetic field strength value is threshold 2.
  • Step 305 the radio frequency SIM card detects the low frequency magnetic field intensity emitted by the card reader
  • the RF SIM card turns on the low frequency magnetic field detection function, and at the same time, turns off the RF function and the magnetic information receiving function.
  • Step 306 the radio frequency SIM card determines whether the low frequency magnetic field strength is greater than or equal to the threshold 2, if yes, step 307, otherwise step 305;
  • Step 307 the radio frequency SIM card collects low frequency magnetic field information
  • the radio frequency SIM card turns on the low-frequency magnetic field information receiving function, starts to receive the low-frequency magnetic field information, and continues to detect the low-frequency magnetic field strength.
  • Step 308 the radio frequency SIM card determines whether the low frequency magnetic field strength is greater than or equal to the threshold 1, if yes, step 309, otherwise step 306;
  • the RF SIM card When the RF SIM card starts to receive low frequency magnetic field information, if the low frequency magnetic field strength is less than the threshold 2, the RF SIM card turns off the low frequency magnetic field information receiving function, and continues to detect whether the low frequency magnetic field strength is greater than or equal to the threshold 2. If the low frequency magnetic field strength is greater than the threshold 1, the low frequency SIM card extracts the received low frequency magnetic field information data, and turns on the radio frequency function to prepare for the transaction.
  • Step 310 executing a transaction, during the transaction, the radio frequency SIM card determines whether the low frequency magnetic field strength is greater than or equal to the threshold 3, if the step 312 is performed, otherwise step 311 is performed;
  • Step 311 interrupting the transaction; In step 312, the transaction is completed and the process ends.
  • the RF SIM card uses the extracted low-frequency magnetic field information to complete the smart card-related application of the RF SIM card through the RF function.
  • the present invention utilizes the radio frequency SIM card of low frequency magnetic communication to initiate the transaction distance threshold judgment method, and applies the feature that the low frequency magnetic field is less affected by the shielding to the control of the starting transaction distance of the radio frequency SIM card, and overcomes the radio frequency SIM.
  • the card takes a long time to receive the low frequency magnetic field information, and the startup transaction time is too long.
  • the method of the present invention is within the range allowed by the distance control while effectively avoiding the phenomenon of misreading the card, misreading the card, and the like. It reduces the time for customers to swipe their cards within the starting transaction distance and improves the quality of user experience.

Description

说 明 书 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 技术领域
本发明涉及通信领域，尤其涉及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。 背景技术
随着移动通信技术的普及， 移动通信终端逐渐走入大众的日常生活， 而 移动通信终端中的 SIM ( Subscr iber Ident i ty Model , 用户身份模块）卡， 作为移动通信终端的重要组成部分而被广泛地使用。 随着技术的不断发展， 为了满足用户不断提高的移动通信终端使用体验需求， 具备多种新功能的 SIM卡被开发并投入使用， 低频磁通信射频 SIM卡就是其中的一例。
低频磁通信射频 S IM卡是具有低频磁通信以及射频通信功能的 SIM卡， 包括卡体及卡体内的集成电路。低频磁通信射频 SIM卡的卡体上设置可与移 动通信终端匹配的 SIM卡接口， 卡体内的集成电路包括中央处理器 CPU、 与 该中央处理器 CPU电连接的低频磁感应电路和低频磁信息接收模块、与该中 央处理器 CPU电连接的 SIM卡存储器、 射频收发电路和接口电路， 以及与射 频收发电路电连接的射频收发天线。低频磁通信射频 S IM卡通过自身的接口 电路及卡体上的 SIM卡接口与移动通信终端电连接。低频磁通信射频 SIM卡 不仅能够与移动通信终端通信以实现普通 SIM卡的功能，还能够通过低频磁 感应电路及低频磁信息接收模块、射频收发电路和接口电路与配套的外部处 理装置（例如读卡器）进行近距离通信。 近距离通信过程和内容由低频磁通 信射频 SIM卡内的中央处理器 CPU具体处理。
低频磁通信射频 SIM卡多用于移动电话，除具备常规 SIM卡的所有功能， 还可以让移动电话具有诸如公交乘车卡、 门禁通信卡、信用卡、小额支付卡、 考勤卡等智能卡的功能， 而且各种智能卡的使用过程中产生的信息能够直接 在移动电话的屏幕上显示， 用户通过移动电话的键盘来完成各项操作。
当低频磁通信射频 SIM卡作为公交乘车卡、 门禁通信卡、 信用卡、 小额 支付卡、 考勤卡等智能卡使用时， 为了避免误读卡操作和错读卡操作， 安装 该低频磁通信射频 S IM卡的移动通信终端能够与读卡器进行有效数据传输的 距离、 即启动交易的距离必须控制在一定的范围内， 且 SIM卡进入交易区域 内， 启动交易速度不应过 '隄， 否则将影响用户使用效果。
如何最大程度地提高启动交易距离的可靠性， 同时克服由于低频交变磁 场通信速率低造成的低频磁通信射频 SIM卡在使用时， 需要较长时间地接收 低频磁场信息导致的启动交易时间偏长的问题， 同时尽可能减短用户的交易 时间， 对于实现低频磁通信射频 SIM卡的应用是十分重要和迫切的。 发明内容
本发明所要解决的技术问题是提供一种利用低频磁通信的射频 S I M卡启 动交易的距离门限判断方法， 缩短低频磁通信射频 SIM卡的启动交易时间， 同时减少用户刷卡时间， 提升用户体验。
为解决上述技术问题， 本发明提出了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， 所述射频 SIM卡通过低频通道与其对应的读 卡器进行近距离通信的距离控制， 通过射频通道与所述读卡器进行交易， 所 述利用低频磁通信的射频 S IM卡启动交易的距离门限判断方法包括：
步骤 a , 设置第一门限为启动交易的距离对应的低频磁场强度值， 第二 门限为低频磁场有效通信距离对应的低频磁场强度值， 第三门限为最远交易 距离对应的低频磁场强度值， 所述第一门限大于或等于第三门限， 所述第三 门限大于或等于第二门限； 步骤 b, 射频 SIM卡不断对读卡器发出的低频磁场强度进行检测， 判断 该低频磁场强度是否大于或等于所述第二门限， 若是则接收并存储低频磁场 信息；
步骤 c , 射频 SIM卡进一步判断读卡器发出的低频磁场强度是否大于或 等于所述第一门限， 若是则射频 SIM卡启动交易流程；
步骤 d, 在所述交易流程中， 射频 SIM卡检测读卡器发出的低频磁场强 度并判断其是否小于所述第三门限， 若是则中断本次交易。
进一步地，上述方法还可具有以下特点，所述步骤 a中，所述第一门限、 第二门限和第三门限的确定步骤为：
A. 通过实验， 使用射频 SIM卡测量与该射频 SIM卡配套的读卡器发射 的低频磁场强度， 确定低频磁场强度与距离的对应关系， 并建立低频磁场强 度与距离的对应表；
B. 对照低频磁场强度与距离的对应表， 根据启动交易距离的要求， 设 置启动交易的距离对应的低频磁场强度值为第一门限； 根据低频磁场通信速 率， 结合射频 SIM卡应用中需要低频磁场传输的数据量， 计算出低频磁场有 效通信距离， 并设置低频磁场有效通信距离对应的低频磁场强度值为第二门 限； 根据最远交易距离控制的要求， 设置最远交易距离对应的低频磁场强度 值为第三门限。
进一步地， 上述方法还可具有以下特点， 所述步骤 b中， 若低频磁场强 度小于所述第二门限， 则射频 SIM卡停止接收低频磁场信息并继续对读卡器 发出的低频磁场强度进行检测。
进一步地， 上述方法还可具有以下特点， 所述步骤 c中， 若低频磁场强 度小于所述第一门限， 则执行步骤 b。
进一步地， 上述方法还可具有以下特点， 所述步骤 d中， 在所述交易流 程中， 若低频磁场强度大于所述第三门限， 则继续交易直至交易完成。 进一步地， 上述方法还可具有以下特点， 所述低频磁场为交变磁场， 所 述氐频磁场的频率处于 100Hz ~ 125KHz的频率范围。
进一步地， 上述方法还可具有以下特点， 所述射频通道的工作频率处于 超高频 SHF频段、 甚高频 VHF频段或者特高频 UHF频段。
进一步地， 上述方法还可具有以下特点， 所述射频通道的工作频率为 433MHz , 2. 4GHz或 5GHz。
本发明的利用低频磁通信的射频 S I M卡启动交易的距离门限判断方法， 缩短了低频磁通信射频 S IM卡在近距离通信应用中的启动交易时间， 同时减 少了用户的刷卡时间， 提升了用户体验。 附图说明
图 1是本发明实施例中所涉及的射频 S IM卡的结构图；
图 2是本发明实施例中所涉及的读卡器的结构图；
图 3为本发明实施例中射频 S IM卡的距离控制过程流程图；
图 4是本发明实施例中射频 S IM卡应用场景示意图；
图 5是本发明实施例中通过实验测得的不同移动通信终端距离与低频磁 场强度的对应关系曲线；
图 6是本发明实施例中低频磁场强度与距离的对应关系表；
图 7是本发明实施例中门限 1、 门限 2、 门限 3的相对位置示意图。 具体实施方式
以下结合附图对本发明的原理和特征进行描述， 所举实例只用于解释本 发明， 并非用于限定本发明的范围。
首先对本发明中所涉及的射频 S IM卡和读卡器作一介绍， 本发明中的射 频 S IM卡为前述的^ 频磁通信射频 S IM卡。 图 1是本发明实施例中所涉及的射频 S IM卡的结构图。 如图 1所示， 本 发明中所涉及的低频磁通信射频 SIM卡 100包括 SIM卡模块（即 SIM卡本体 ) 105、 第一射频收发模块 101、 第一射频天线 102、 第一微控制器 103、 低频 磁感应及接收模块 104 , 其中， 第一射频收发模块 101分别与第一射频天线 102和第一微控制器 103电连接， 低频磁感应及接收模块 104与第一微控制 器 103电连接， SIM卡模块 105与第一微控制器 103电连接。
图 2是本发明实施例中所涉及的读卡器的结构图。 如图 2所示， 读卡器 200与图 1所示的射频 SIM卡 100配套使用， 该读卡器 200包括第二射频收 发模块 201、 第二射频天线 202、 第二微控制器 203和低频磁发射模块 204 , 其中， 第二射频收发模块 201分别与第二射频天线 202和第二 控制器 203 电连接， 低频磁发射模块 204用于产生低频感应磁场。 低频磁发射模块 204 与第二微控制器 203电连接。
图 4是本发明实施例中射频 SIM卡应用场景示意图。 如图 4所示， 射频 SIM卡 100接近读卡器 200时， 射频 SIM卡 100中的低频磁感应及接收模块 104感应到读卡器 200中的低频磁发射模块 204产生的相适配的低频磁场信 号， 该低频磁场信号被转换处理成电信号后送至射频 SIM卡的第一微控制器 103 , 第一微控制器 103根据低频磁场强度变化做相应的处理， 从而实现读 卡器 200与射频 SIM卡 100之间的通信距离控制和信息传递；读卡器 200与 射频 SIM卡 100再直接通过第一射频收发模块 101、 第二射频收发模块 201 实现射频通信。
图 3为本发明实施例中射频 S IM卡的距离控制过程流程图。如图 3所示， 本实施例中， 射频 SIM卡的距离控制过程包括：
步骤 301 , 开始， 射频 SIM卡进行上电初始化；
射频 SIM卡上电初始化后， 启动 SIM卡基本功能。
步骤 302 , 设置门限 1 , 门限 1为启动交易的距离对应的低频磁场强度 值；
步骤 303 , 设置门限 2 , 门限 2为低频磁场有效通信距离对应的低频磁 场强度值；
步骤 304 , 设置门限 3 , 门限 3为最远交易距离对应的低频磁场强度值； 图 7是本发明实施例中门限 1、 门限 2、 门限 3的相对位置示意图。 门 限一（即门限 1 ) 704的、 门限二（即门限 2 ) 702的、 门限三（即门限 3 ) 703的相对位置如图 7所示。 装有射频 SIM卡的移动通信终端 701从远及近 靠近读卡器 705。 当移动通信终端 701进入门限二 702时， 进行^ 频磁信息 的接收； 当移动通信终端 701进入门限一 704的时候进行刷卡交易； 当移动 通信终端 701离开门限三 703的时候结束交易。 门限 1大于或等于门限 3 , 门限 3大于或等于门限 2。
本实施例中， 门限 1、 门限 2和门限 3可以通过下述的步骤 A和步骤 B 确定：
A. 通过实验， 使用射频 SIM卡测量与该射频 SIM卡配套的读卡器发射 的低频磁场强度， 确定低频磁场强度与距离的对应关系， 并建立低频磁场强 度与距离的对应表；
本发明实施例中通过实验测得的不同移动通信终端距离与低频磁场强 度的对应关系曲线如图 5所示。本发明实施例中低频磁场强度与距离的对应 关系表如图 6所示。
B. 对照低频磁场强度与距离的对应表， 根据启动交易距离的要求， 设 置启动交易的距离对应的低频磁场强度值为门限 1 ;根据低频磁场通信速率， 结合射频 SIM卡应用中需要低频磁场传输的数据量，计算出低频磁场有效通 信距离， 并设置低频磁场有效通信距离对应的低频磁场强度值为门限 2; 根 据最远交易距离控制的要求，设置最远交易距离对应的低频磁场强度值为门 限 3; 门限 1应大于或等于门限 3 , 门限 3应大于或等于门限 2。 其中， 步骤 B又可分为以下三个分步骤：
B1. 根据启动交易距离的要求， 并对照低频磁场强度与距离的对应表， 确定启动交易的距离对应的低频磁场强度值为门限 1；
B2. 根据低频磁场通信速率， 结合射频 SIM卡在应用中需要低频磁场传 输的数据量， 计算出低频磁场有效通信距离， 并对低频照磁场强度与距离的 对应表， 确定低频磁场有效通信距离对应的低频磁场强度值为门限 2。
B3. 根据最远交易距离控制的要求， 设置最远交易距离对应的低频磁场 强度值门限 3。
步骤 305, 射频 SIM卡检测读卡器发射的低频磁场强度；
射频 SIM卡打开低频磁场检测功能， 同时， 关闭射频功能及磁信息接收 功能。
步骤 306, 射频 SIM卡判断低频磁场强度是否大于或等于门限 2, 若是 执行步骤 307, 否则执行步骤 305;
步骤 307, 射频 SIM卡收集低频磁场信息；
只有当低频磁场强度大于或等于门限 2时，射频 SIM卡才打开低频磁场 信息接收功能，开始接收低频磁场信息，同时继续对低频磁场强度进行检测。
步骤 308, 射频 SIM卡判断低频磁场强度是否大于或等于门限 1, 若是 执行步骤 309, 否则执行步骤 306;
当射频 SIM卡开始接收低频磁场信息后若低频磁场强度小于门限 2, 则 射频 SIM卡关闭低频磁场信息接收功能， 同时继续探测低频磁场强度是否大 于等于门限 2。 若低频磁场强度大于门限 1, 则低频 SIM卡提取已经接收到 的低频磁场信息数据， 并开启射频功能准备进行交易。
步骤 310, 执行交易， 交易期间射频 SIM卡判断低频磁场强度是否大于 或等于门限 3, 若是执行步骤 312, 否则执行步骤 311;
步骤 311, 中断交易； 步骤 312 , 完成交易， 结束。
射频 SIM卡使用提取的低频磁场信息，通过射频功能完成射频 SIM卡的 智能卡相关应用。
由上可见，本发明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，在将低频磁场受屏蔽影响小的特点应用于射频 SIM卡的启动交易距 离的控制的同时，克服了射频 SIM卡在使用中需要较长时间接收低频磁场信 息导致的启动交易时间过长的问题， 在有效地避免了误读卡、 错读卡等现象 的同时， 本发明方法在距离控制允许的范围内， 减少了客户在启动交易距离 内的刷卡时间， 提升了用户体验质量。
以上所述仅为本发明的较佳实施例， 并不用以限制本发明， 凡在本发明 的精神和原则之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发 明的保护范围之内。

Claims

权 利 要 求 书
1、 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， 其特征在于， 所述射频 SIM卡通过低频通道与其对应的读卡器 进行近距离通信的距离控制， 通过射频通道与所述读卡器进行交易， 所述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包 括：
步骤 a：设置第一门限为启动交易的距离对应的低频磁场强度值， 第二门限为低频磁场有效通信距离对应的低频磁场强度值，第三门限 为最远交易距离对应的低频磁场强度值，所述第一门限大于或等于第 三门限， 所述第三门限大于或等于第二门限；
步骤 b:射频 SIM卡不断对读卡器发出的低频磁场强度进行检测， 判断该低频磁场强度是否大于或等于所述第二门限，若是则接收并存 储低频磁场信息；
步骤 c: 射频 SIM卡进一步判断读卡器发出的低频磁场强度是否 大于或等于所述第一门限， 若是则射频 SIM卡启动交易流程；
步骤 d: 在所述交易流程中， 射频 SIM卡检测读卡器发出的低频 磁场强度并判断其是否小于所述第三门限， 若是则中断本次交易。
2、 根据权利要求 1所述的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，其特征在于，所述步骤 a中，所述第一门限、 第二门限和第三门限的确定步骤为：
A. 通过实验， 使用射频 SIM卡测量与该射频 SIM卡配套的读卡 器发射的低频磁场强度， 确定低频磁场强度与距离的对应关系， 并建 立低频磁场强度与距离的对应表；
B. 对照低频磁场强度与距离的对应表， 根据启动交易距离的要 求， 设置启动交易的距离对应的低频磁场强度值为第一门限； 根据低 频磁场通信速率， 结合射频 SIM卡应用中需要低频磁场传输的数据 量， 计算出低频磁场有效通信距离， 并设置低频磁场有效通信距离对 应的低频磁场强度值为第二门限； 根据最远交易距离控制的要求， 设 置最远交易距离对应的低频磁场强度值为第三门限。
3、 根据权利要求 1所述的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， 其特征在于， 所述步骤 b中， 若低频磁场强 度小于所述第二门限，则射频 S IM卡停止接收低频磁场信息并继续对 读卡器发出的低频磁场强度进行检测。
4、 根据权利要求 1所述的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， 其特征在于， 所述步骤 c中， 若低频磁场强 度小于所述第一门限， 则执行步骤 b。
5、 根据权利要求 1所述的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， 其特征在于， 所述步骤 d中， 在所述交易流 程中，若低频磁场强度大于所述第三门限，则继续交易直至交易完成。
6、 根据权利要求 1所述的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， 其特征在于， 所述低频磁场为交变磁场， 所 述氐频磁场的频率处于 100Hz ~ 125KHz的频率范围。
7、 根据权利要求 1所述的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， 其特征在于， 所述射频通道的工作频率处于 超高频 SHF频段、 甚高频 VHF频段或者特高频 UHF频段。
8、 根据权利要求 1所述的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， 其特征在于， 所述射频通道的工作频率为 433MHz , 2. 4GHz或 5GHz。
PCT/CN2010/071822 2010-04-02 2010-04-16 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 WO2011120242A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US13/638,252 US9002269B2 (en) 2010-04-02 2010-04-16 Methods for a radio-frequency SIM card with low-frequency magnetic communication to trigger a transaction according to determined distance thresholds

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2010101384941 2010-04-02
CN 201010138494 CN102215051B (zh) 2010-04-02 2010-04-02 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

Publications (1)

Publication Number Publication Date
WO2011120242A1 true WO2011120242A1 (zh) 2011-10-06

Family

ID=44711324

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2010/071822 WO2011120242A1 (zh) 2010-04-02 2010-04-16 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

Country Status (3)

Country Link
US (1) US9002269B2 (zh)
CN (1) CN102215051B (zh)
WO (1) WO2011120242A1 (zh)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130217334A1 (en) * 2010-09-21 2013-08-22 Nationz Technologies Inc. Fast access short-range communication system and method
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
CN103297601A (zh) * 2012-03-01 2013-09-11 国民技术股份有限公司 一种通信系统和方法
CN103973341A (zh) * 2013-02-06 2014-08-06 国民技术股份有限公司 一种双频转接装置及方法
CN104678357A (zh) * 2013-11-28 2015-06-03 国民技术股份有限公司 一种定位方法、终端及定位系统
GB2521224A (en) * 2013-12-16 2015-06-17 Nordic Semiconductor Asa Radio communications
CN108882207B (zh) * 2017-05-08 2022-04-22 阿里巴巴集团控股有限公司 近场触发功能的实现方法及装置
CN110915144B (zh) * 2018-05-02 2021-12-10 华为技术有限公司 一种nfc刷卡控制方法、终端设备及存储介质
CN112598094A (zh) * 2020-12-10 2021-04-02 湖北文理学院 一种短距离通信系统及通信方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006108726A1 (de) * 2005-04-14 2006-10-19 Siemens Aktiengesellschaft Vorrichtung zum auslesen von mindestens einem chip einer smartkarte
CN101329717A (zh) * 2008-05-19 2008-12-24 深圳市中兴集成电路设计有限责任公司 分阶段控制其信号收发强度的射频读卡器及其实现方法
CN101330684A (zh) * 2008-05-19 2008-12-24 深圳市中兴集成电路设计有限责任公司 基于射频sim卡控制其有效通信距离的方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001017298A1 (en) * 1999-09-02 2001-03-08 Automated Business Companies Communication and proximity authorization systems
US7630721B2 (en) * 2000-06-27 2009-12-08 Ortiz & Associates Consulting, Llc Systems, methods and apparatuses for brokering data between wireless devices and data rendering devices
CN100338478C (zh) * 2002-08-19 2007-09-19 Q－Track股份有限公司 用于近场电磁测距的系统和方法
US7597250B2 (en) * 2003-11-17 2009-10-06 Dpd Patent Trust Ltd. RFID reader with multiple interfaces
CN101334470B (zh) * 2008-07-29 2011-01-26 国民技术股份有限公司 一种控制移动终端射频通信距离的系统和方法
TWI443987B (zh) * 2007-11-26 2014-07-01 Mstar Semiconductor Inc 近場通訊系統及其相關之顯示裝置
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006108726A1 (de) * 2005-04-14 2006-10-19 Siemens Aktiengesellschaft Vorrichtung zum auslesen von mindestens einem chip einer smartkarte
CN101329717A (zh) * 2008-05-19 2008-12-24 深圳市中兴集成电路设计有限责任公司 分阶段控制其信号收发强度的射频读卡器及其实现方法
CN101330684A (zh) * 2008-05-19 2008-12-24 深圳市中兴集成电路设计有限责任公司 基于射频sim卡控制其有效通信距离的方法

Also Published As

Publication number Publication date
CN102215051B (zh) 2013-08-28
US20130017785A1 (en) 2013-01-17
CN102215051A (zh) 2011-10-12
US9002269B2 (en) 2015-04-07

Similar Documents

Publication Publication Date Title
WO2011120242A1 (zh) 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
KR101608279B1 (ko) Ｒｆ장치, ｒｆ카드 판독 및 관련 통신 시스템 및 방법
US10122841B2 (en) Smartphone proximity card emulation
EP2403152B1 (en) Terminal of supporting enhanced near field communication and its processing method
US7652578B2 (en) Detection apparatus and method for near field communication devices
WO2011044740A1 (zh) 移动支付的实现方法及移动支付系统
CN102215053B (zh) 一种具有安全机制的近距离无线通讯终端
CN102034064B (zh) 应用电容感应控制射频sim卡通讯距离的方法和装置
US20120214411A1 (en) System and method of near field communication tag presence detection for smart polling
CN102215050A (zh) 一种带低频磁通信的射频sim卡冲突检测方法
EP2221978A2 (en) Radio communication apparatus, radio communication method and program
CN103413218A (zh) 移动终端、nfc支付方法、装置及系统
WO2010060326A1 (zh) 射频sim卡、射频读卡器及射频通信的磁感应控制方法
WO2009109075A1 (zh) 一种用于校准射频sim卡通信距离的装置及方法
WO2012163118A1 (zh) 距离可控的移动支付方法及装置
US20120329391A1 (en) Detecting a presence of near field communications (nfc) devices
WO2012071812A1 (zh) 减少移动支付交易干扰的方法、装置及移动终端
CN103297601A (zh) 一种通信系统和方法
WO2024007777A1 (zh) 读卡器、卡端设备、刷卡方法及控制单元
CN203054898U (zh) 一种采用磁场控制距离检测的rf-sim卡
CN201974816U (zh) 一种实现近场通信的射频读卡设备
CN103178875A (zh) 一种通过接触实现通信的通讯设备、通信系统及方法
TWI632512B (zh) Anti-collision method between different frequency cards and dual frequency card reader
CN204143477U (zh) 支持nfc终端前端与卡内天线自动切换的射频sim卡
WO2023207251A1 (zh) 终端设备、数据处理方法和存储介质

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10848703

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 13638252

Country of ref document: US

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC

122 Ep: pct application non-entry in european phase

Ref document number: 10848703

Country of ref document: EP

Kind code of ref document: A1