KR20200059803A - Signal processing method for device-to-device data transmission system - Google Patents

Abstract

Provided is a signal processing method for an end-to-end data transmission system. As a signal processing method for controlling wireless signal sensitivity, the method includes: a step (a) in which a service operation server registers basic information for sensitivity confirmation for confirming the basic output intensity of a short-range wireless signal through a transmission-side wireless terminal and an identification value of the transmission-side wireless terminal delivered from a transmission-side agent; a step (b) in which as the short-range wireless signal is received from the transmission-side agent, a reception-side agent requests the basic information for sensitivity confirmation of the transmission-side wireless terminal by transmitting the identification value of the transmission-side wireless terminal to the service operation server; and a step (c) in which the reception-side agent determines whether the reception intensity of the short-range wireless signal currently received after being outputted from the transmission-side wireless terminal reaches a target reception intensity at a moment when a range between the transmission-side wireless terminal and the reception-side wireless terminal is within a predesignated approval range required for a normal data transmission procedure carried out by the data transmission system. Therefore, the method is capable of continuously controlling the intensity of a received signal on a reception-side wireless terminal regardless of the output intensity of a short-range wireless signal of a transmission-side wireless terminal.

Description

Signal processing method in a data transmission system between terminals {SIGNAL PROCESSING METHOD FOR DEVICE-TO-DEVICE DATA TRANSMISSION SYSTEM}

In the present invention, in constructing a data transmission system such as a payment system between wireless terminals (for example, between smartphones, between a payment terminal and a smartphone, etc.), the output strength of the short-range radio frequency signal output from the wireless terminal is related to The present invention relates to a method of constantly adjusting the sensitivity of a short-range radio frequency signal according to the proximity distance or processing the signal for proximity distance sensing.

As a method of using a payment system using a smartphone, a method in which a smartphone is brought close to a payment terminal using a short-range radio frequency technology such as Near Field Communication (NFC) or Magnetic Secure Transmission (MST) is mainly used. As for payment between smartphones, a method of sensing a QR code using a smartphone camera has been mainly used.

However, the QR code payment method, which is an image-based data transmission method, is vulnerable to an attack that intercepts payment by inserting malicious code into the smartphone to cause the malicious QR code to rise on top of the normal QR code. In order to improve this vulnerability, a payment method between terminals using beacons has been discussed, but conventional prior arts simply specify a payment method using a beacon, and can maintain a standardized quality in adjusting the beacon sensitivity between phones and phones. There was not.

More specifically, when the output of the beacon signal is transmitted from the mobile terminal, when the beacon signal is transmitted, the sensitivity of the signal received from the mobile terminal of the other party is relatively increased compared to the mobile terminal in which the beacon signal is output small. Even if the output intensity is largely recognized, a problem may occur in which payment is made.

In the present invention, in recognizing signal strength between wireless terminals having different output strengths of short-range wireless signals, payment, payment, or data transmission procedures can be executed only when a distance between wireless terminals lies at a predetermined point. , It is intended to provide a method of constantly adjusting the sensitivity of a received signal at a receiving side wireless terminal regardless of the output strength of a short range wireless signal of the transmitting side wireless terminal.

In addition, the present invention is to provide a method capable of signal processing through proximity sensing, so that payment, payment, or data transmission procedures can be executed only when the distance between terminals lies at a predetermined point.

According to an aspect of the present invention, in order to implement a data transmission system between terminals, communication is interlocked with a transmitting agent installed on a transmitting wireless terminal and a receiving agent installed on a receiving wireless terminal, a transmitting side and a receiving wireless terminal. In the data transmission system between terminals comprising a service operation server, as a signal processing method for adjusting the sensitivity of the radio signal, (a) The service operation server, the identification value of the transmitting side wireless terminal transmitted from the sending agent And registering basic information for checking sensitivity for checking basic output strength of the short-range wireless signal by the transmitting-side wireless terminal. (b) As the short-range wireless signal output from the transmitting-side wireless terminal is received, the receiving agent sends the identification value of the transmitting-side wireless terminal to the service operation server to check the sensitivity of the transmitting wireless terminal. Requesting basic information about the application; (c) the reception strength of the short-range radio signal output from the transmitting-side wireless terminal and currently received by the receiving-side agent, using the basic information for checking the sensitivity received from the service operation server, is the transmitting-side wireless terminal And determining whether a target reception strength has been reached when a distance between the receiver and the receiving wireless terminal is within a predetermined approved distance required to perform a normal data transmission procedure by the data transmission system. A signal processing method in is provided.

According to another aspect of the present invention, as a signal processing method in a data transmission system between terminals, (a) when a short-range wireless signal outputted from a transmitting side wireless terminal is received, a receiving side agent installed in the receiving side wireless terminal, Monitoring an output value by a proximity sensor mounted on the receiving wireless terminal; And (b) determining, by the receiving agent, whether an actual distance according to an output value output by the proximity sensor is within a predetermined approved distance while the reception strength of the short-range wireless signal is greater than or equal to a predetermined target strength. , The actual distance means a distance between the transmitting wireless terminal or a predetermined tapping object and the receiving wireless terminal; (c) when the reception strength of the short-range wireless signal is close to within the authorized distance while the target strength is greater than or equal to the target strength, the receiving-side agent requests or initiates a process of normal data transmission by the data transmission system. A signal processing method in a data transmission system between terminals is provided.

According to an embodiment of the present invention, in recognizing the signal strength between wireless terminals having different output strengths of short-range wireless signals, a payment or payment procedure may be executed only when a distance between wireless terminals lies at a predetermined point. Thus, regardless of the output strength of the short-range wireless signal of the transmitting-side wireless terminal, there is an effect of constantly adjusting the sensitivity of the received signal at the receiving-side wireless terminal.

In addition, according to an embodiment of the present invention, a method for processing signals through proximity sensing is provided so that payment, payment, or data transmission procedures can be executed only when the distance between the terminals lies at a predetermined point. can do.

1 is a view for explaining a method for adjusting the sensitivity of a wireless signal in an inter-terminal payment system according to an embodiment of the present invention.
2 is an example of a location display screen of a BLE beacon in a transmitting wireless terminal performing BLE broadcasting.

The present invention can be applied to various transformations and may have various embodiments, and specific embodiments will be illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all conversions, equivalents, and substitutes included in the spirit and scope of the present invention.

In describing the present invention, when it is determined that detailed descriptions of related known technologies may unnecessarily obscure the subject matter of the present invention, detailed descriptions thereof will be omitted. In addition, the numbers (for example, first, second, etc.) used in the description process of the present specification are only identification symbols for distinguishing one component from other components. Also, in the specification, when one component is referred to as "connected" or "connected" with another component, the one component may be directly connected to the other component, or may be directly connected, but in particular It should be understood that, as long as there is no objection to the contrary, it may or may be connected via another component in the middle. In addition, throughout the specification, when a part “includes” a certain component, this means that other components may be further included instead of excluding other components, unless specifically stated otherwise.

In addition, the term "agent" described in the specification means a unit that processes at least one function or operation, which may be implemented by one or more hardware or software, or a combination of hardware and software, which is installed in a corresponding terminal and will be described later. It may be implemented as an app (APP) (that is, an application program) that performs each function and operation according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1 is a view for explaining a method for adjusting the sensitivity of a wireless signal in a data transmission system between terminals according to an embodiment of the present invention.

Referring to FIG. 1, according to an embodiment of the present invention, a data transmission system between terminals includes a transmitting agent 100 installed on a transmitting wireless terminal, a receiving agent 200 installed on a receiving wireless terminal, and a transmitting side And a service operation server 300 in communication with a receiving wireless terminal.

In the present specification, the terminal-to-terminal data transmission system will be mainly described as a terminal-to-terminal payment system, but is not limited to this. For example, in addition to the inter-terminal payment system, various embodiments of the present invention, which will be described later, can also be applied to various inter-terminal data transmission systems such as phone-to-phone business card delivery, coupon delivery, and the like. However, hereinafter, for convenience and concentration of the description of the present invention, it will be described on the assumption of a payment system case between terminals. Accordingly, the roles and functions to be played by the service operation server 300 to be described later may assume the roles and functions from the transaction server or the authentication server when assuming a payment system between terminals.

Also, assuming a payment system between terminals, the wireless terminal of the transmitter and the wireless terminal of the receiver may be defined as follows. For example, if the transmitting wireless terminal is the terminal of the provider of the product or service to be traded, the receiving wireless terminal may be the terminal of the consumer side (ie, the side to pay the price) of the product or service to be traded, As another example, it is a face-to-face money transfer case between devices, and the receiving wireless terminal may be a terminal carrying a transfer person who wishes to transfer the money to the holder of the transmitting wireless terminal. Of course, the division between the wireless terminal of the transmitting side and the wireless terminal of the receiving side may be configured in the opposite direction from the above description. That is, contrary to the above description, the transmitting side wireless terminal may be the consumer or the transferee side, and the receiving side wireless terminal may be the provider or transfer party side.

In an embodiment of the present invention, a transaction / payment / payment is made between the two by using the short-range wireless communication technology. At this time, there is no particular limitation on which short-range wireless communication technology is used. However, in this specification, for convenience and concentration of the description, it is assumed that a payment system between terminals is implemented through transmission and reception of a beacon signal by a low power Bluetooth (BLE) technology between a transmitting wireless terminal and a receiving wireless terminal. Will be explained.

In addition, the present invention aims as a main technical solution for a method of adjusting the sensitivity of a wireless signal in a data transmission system between terminals or a method of setting a proximity distance between terminals. For concentration of the description of the invention, in this specification, a payment system between terminals The detailed description of the authentication procedure for determining the authenticity of each terminal and the authentication procedure for normal transaction / payment approval will be omitted.

Referring to FIG. 1, according to a method of adjusting wireless signal sensitivity in an inter-terminal payment system according to an embodiment of the present invention, the service operation server 300 is configured to transmit the wireless terminal of the transmitting terminal transmitted from the sending agent 100. And registering basic information for checking the sensitivity for checking the identification value and the basic output intensity of the beacon signal by the transmitting wireless terminal (see S103 in FIG. 1).

The step of registering the identification information of the transmitting side wireless terminal and the basic information for checking the sensitivity as described above is shown to be performed after the BLE transmission request step (S101) according to FIG. 1, however, the present invention depends on the system design method. Of course, it may be made in the initial registration step of configuring the payment system between terminals.

However, after the BLE transmission request step (S101) of FIG. 1, if the basic information for identifying the identification value and sensitivity of the transmitting wireless terminal is registered in real time in the service operation server 300, the service operation server 300 transmits By transmitting the location of the BLE suitable for the terminal model according to the identification value of the wireless terminal, the transmitting side wireless terminal can display the location of the BLE beacon through the terminal screen (see FIG. 2). When the location of the BLE beacon is displayed through the screen of the transmitting terminal as described above, in the future, the holder of the receiving wireless terminal can clearly recognize to which location the transmitting terminal taps its own wireless terminal. It has the effect of reducing the error of detecting the proximity distance of. In particular, if the terminal used is a tablet with a large size other than a smartphone, the difference in the physical mounting position of the antenna that transmits and receives the short-range radio frequency depends on the size of the tablet. The terminal screen can be displayed on the screen of the terminal to indicate where the frequency intensity can be recognized more consistently by being close to the position.

In the present invention, the received signal strength indication (RSSI) measured on the receiving terminal side may be different depending on the respective device characteristics for each broadcasting transmitting terminal of the BLE. This is to compensate for the difficulty in measuring the distance of how close the liver is. Therefore, in the exemplary embodiment of the present invention, it is necessary to confirm how different the transmission output strength of the beacon signal for each transmission terminal is, and for this, confirmation of the basic information for checking the sensitivity as described above is requested.

According to an example, the basic information for checking the sensitivity may be the terminal model name of the transmitting-side wireless terminal. In this case, the service operation server 300 may check the signal output standard of the short-range wireless transmission device (ie, a beacon transmitter in this specification) mounted on the terminal of the corresponding model based on the corresponding terminal model name, and the confirmed signal This is because it is possible to check which output range / value the transmission beacon strength basically has in the case of the corresponding terminal according to the output standard.

According to another example, as the basic information for checking the sensitivity, a model name (ie, a device name) of the beacon transmitter itself mounted in the transmitting wireless terminal may be used.

According to another example, as the basic information for checking the sensitivity, an RSSI value actually measured using a measurement device such as a beacon scanner may be directly used. That is, the actual RSSI value is measured in a state in which a measuring device such as a beacon scanner is brought close to the transmitting side wireless terminal within an approved distance, which will be described later, and the RSSI value at the measured approved distance is then directly used as the basic information for checking the sensitivity. That's how it is.

As described above, when the identification value and the basic information for checking the sensitivity of the transmitting wireless terminal are registered in the service operation server 300, the beacon signal output (broadcasted) from the transmitting wireless terminal is transmitted to the receiving wireless terminal. When received in (see S105 and S107 in FIG. 1), the receiving agent 200 extracts the identification value of the transmitting wireless terminal included in the beacon signal and transmits the identification value to the service operation server 300 By requesting the information of the transmitting side wireless terminal (that is, the basic information for checking the sensitivity) (see S109 in Fig. 1).

Accordingly, the service operation server 300 transmits the basic information for checking the sensitivity to the receiving agent 200 (see S111 in FIG. 1). Accordingly, the receiving agent 200 adjusts the receiving sensitivity of the beacon signal by using the basic information for checking the sensitivity returned from the service operation server 300 to measure the distance between the transmitting wireless terminals, and through this, the actual payment procedure is performed. It is determined whether or not to proceed (see S113 and S115 in FIG. 1).

This will be described in more detail as follows. For convenience of description, it is assumed that the distance between the transmitting wireless terminal and the receiving wireless terminal is 3 cm, the predefined approval distance required to perform a normal payment approval procedure by the payment system. This means that the normal payment approval procedure proceeds only when the receiving wireless terminal is brought closer to the transmitting wireless terminal within 3 cm and tabbed. However, as described above, the determination as to whether proximity tapping is performed within 3 cm, which is a predetermined approval distance, is made based on the RSSI value of the received beacon signal, and the beacon transmission output of the transmitting wireless terminal may be different for each device. As it may, an accurate judgment may not be made. That is, in the case of a device having a very large beacon transmission power of a transmitting-side wireless terminal, a signal is received with a very strong sensitivity, so a payment approval procedure may be performed even when it is farther than a predetermined approval distance, and vice versa. In the case of a small device, even when it is close to within a predetermined approval distance, a signal receiving sensitivity is low, and a case in which a payment approval procedure is not performed may occur.

Accordingly, according to an example, in response to the request of step S109 by the receiving agent 200, the service operation server 300 may be close to within the authorized distance of 3 cm between the two wireless terminals as the basic information for checking the sensitivity. At this time, the RSSI value of the received signal may be directly transmitted to the receiving agent 200, and the receiving agent 200 may use the RSSI value to determine whether the two terminals are within the approved distance.

According to another example, in response to the request of step S109 by the receiving agent 200, the service operation server 300 transmits a predetermined receiving sensitivity correction value as the basic information for checking the sensitivity to the receiving agent 200 The reception side agent 200 may use the correction value to determine whether the two terminals are within the approved distance. That is, in a state where both terminals are randomly or statistically designated as standard RSSI values when they are within 3 cm, which is a predetermined approved distance, the standard RSSI values and the same distances in the case of the corresponding wireless terminal of the transmitting side When the correction value corresponding to the error between the RSSI values is transmitted to the receiving agent 200, the receiving agent 200 uses the correction value to correct the actual received RSSI value by + or-, and normal It can be used to proceed with the payment approval process.

According to step S111 of FIG. 1, although the service operation server 300 is illustrated around a case in which the RSSI value itself or the RSSI correction value corresponding to the pre-specified approval distance is transmitted to the receiving agent 200, the service operation server ( 300) transmits the above-described model information itself to the receiving agent 200, and the receiving agent 200 directly refers to the beacon transmission signal output specification corresponding to the corresponding model information to determine whether the proximity is within the approved distance as described above. You may be able to perform your judgment.

In the previous embodiment of FIG. 1 and FIG. 2, the distance between both terminals is pre-specified by adjusting the RSSI sensitivity when the receiving wireless terminal receives the beacon signal in consideration of the beacon signal transmission strength of the transmitting wireless terminal. The method of confirming whether the proximity is within a distance has been mainly described, but according to another embodiment of the present invention, the method using the measured distance measured by the proximity sensor mounted on the receiving wireless terminal is independently or from the above-described method. It may be applied in parallel.

Here, the method of measuring the distance by the proximity sensor and the method of adjusting the sensitivity of the wireless signal described above may be as follows. That is, in applying the above-described reception sensitivity adjustment method, the reception-side agent 200 verifies whether it has approached within the predetermined approval distance using the measured distance value actually measured by the proximity sensor mounted on the reception-side wireless terminal. By adding more steps, the accuracy of the payment approval process could be further improved.

In addition, a method of independently using the measured distance measured by the proximity sensor mounted on the receiving side wireless terminal may be as follows. For example, the receiving agent 200, as a basic premise, when a BLE beacon signal broadcast by a transmitting wireless terminal is received, a transmitting wireless terminal (or a tapping object independent of the transmitting wireless terminal (ex May be a simple sticker that induces tapping)) and as the proximity between the receiving wireless terminal increases, based on the measured distance value measured by the proximity sensor mounted on the receiving wireless terminal, whether it has been within the predetermined approved distance. By confirming, it is possible to proceed with a procedure such as a request to initiate a transaction only when within the approved distance.

At this time, in order to solve the possibility of an error such as erroneously determining that the proximity sensor is within an authorized distance even though the proximity sensor is close to an object other than the intended object (ie, the transmitting wireless terminal or the tapping object), the receiving agent 200 transmits It may be possible to reflect (recognize) the distance measurement result by the proximity sensor only when the BLE beacon signal broadcast by the side wireless terminal is received with a strong sensitivity of a predetermined level or higher.

This does not convey the payment request signal or value when proceeding with payment using conventional short-range wireless communication technology (formerly NFC or MST, short-range data transmission technology) when a metallic temporary holder is attached to the rear side to safely use the wireless terminal on the receiving side. Although there is a problem that it cannot be used, it is obvious that the use of a proximity sensor attached to the front side of the wireless terminal of the receiving side and using a different short-range frequency may also be used in a manner that can initiate a transaction request. Currently, it has been described that the receiving wireless terminal receives data to initiate a transaction, but it is obvious that the roles of the receiving wireless terminal and the transmitting wireless terminal may be changed and applied according to the implementation method.

Although described above with reference to the embodiments of the present invention, those skilled in the art variously modify the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. And it can be easily understood.

Claims (6)

For the implementation of a data transmission system between terminals, between a terminal including a transmitting agent installed on a transmitting wireless terminal and a receiving agent installed on a receiving wireless terminal, and a service operation server in communication with a transmitting and receiving wireless terminal. In the data transmission system, as a signal processing method for adjusting the sensitivity of the radio signal,
(a) The service operation server registers the basic information for checking sensitivity for confirming the identification value of the transmitting wireless terminal and the basic output strength of the short-range wireless signal by the transmitting wireless terminal transmitted from the sending agent. To do;
(b) As the short-range wireless signal output from the transmitting-side wireless terminal is received, the receiving agent sends the identification value of the transmitting-side wireless terminal to the service operation server to check the sensitivity of the transmitting wireless terminal. Requesting basic information about the application;
(c) the reception strength of the short-range radio signal output from the transmitting-side wireless terminal and currently received by the receiving-side agent, using the basic information for checking the sensitivity received from the service operation server, is the transmitting-side wireless terminal And determining whether a target reception strength has been reached when a distance between the wireless terminal and the receiving side approaches a predetermined approved distance required for a normal data transmission procedure by the data transmission system.
Signal processing method in a data transmission system between terminals comprising a.
According to claim 1,
In step (c),
The sensitivity checking information is based on when the short-range wireless signal from the transmitting-side wireless terminal is close to within the predetermined authorization distance between the transmitting-side wireless terminal and the receiving-side wireless terminal. A signal processing method in a data transmission system between terminals, characterized in that the signal reception intensity value when received by.
According to claim 1,
In step (c),
The target reception strength is set to a pre-specified standard reception strength value when the transmission-side radio terminal and the reception-side radio terminal are close to within the predetermined authorization distance,
The sensitivity checking information is between a signal reception strength value to be received by the reception side radio terminal and the standard reception strength value when the transmission side radio terminal and the reception side radio terminal are actually close within the predetermined authorization distance. Correction value corresponding to the error,
The receiving agent is characterized in that it determines whether the target reception strength has been reached by performing a correction of the signal reception strength value currently received using the correction value, a signal processing method in a data transmission system between terminals.
According to claim 1,
(d) The receiving-side agent is mounted on the receiving-side wireless terminal in determining whether the transmitting-side wireless terminal and the receiving-side wireless terminal are close to within the predetermined authorization distance or performing the normal data transmission procedure. Further comprising the step of verifying that the proximity within the approved distance using the measured distance value measured by the proximity sensor, a signal processing method in a data transmission system between terminals.
According to claim 1,
The service operation server, when an identification value is received from the transmitting side wireless terminal, checks the terminal model of the transmitting side wireless terminal based on the identification value, and the short range in the transmitting side wireless terminal according to the corresponding terminal model. Transmits the wireless transmitter's mounting position,
The transmitting-side wireless terminal is characterized in that the receiving position received from the service operation server is displayed on a terminal screen to guide the tapping position of the receiving-side wireless terminal, signal processing in a data transmission system between terminals Way.
As a signal processing method in a data transmission system between terminals,
(a) when a short-range wireless signal outputted from a transmitting wireless terminal is received, a receiving agent installed in the receiving wireless terminal monitors an output value by a proximity sensor mounted on the receiving wireless terminal; And
(b) the receiving side agent determining whether the measured distance according to the output value output by the proximity sensor is within a predetermined approved distance while the reception strength of the short-range wireless signal is greater than or equal to a predetermined target strength-here, The actual distance means a distance between the transmitting wireless terminal or a predetermined tapping object and the receiving wireless terminal;
(c) when the reception strength of the short-range wireless signal is close to within the authorized distance while the target strength is greater than or equal to the target strength, the receiving-side agent requests or initiates the progress of a normal data transmission procedure by the data transmission system.
Signal processing method in a data transmission system between terminals comprising a.

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