KR20190128364A - Smart control method and device of a vehicle defending RSA using a mobile device - Google Patents

Abstract

Disclosed are a smart vehicle control method for defending relay station attack (RSA) using a mobile device and an apparatus thereof. According to the present invention, the smart vehicle control method comprises the steps of: establishing a communication network to transmit and receive information to and from a driver′s mobile device through Bluetooth or Wi-Fi; determining the location of the driver′s mobile device is within a predetermined first range (25 m) when a received signal strength (RSS) value of a Bluetooth or Wi-Fi signal received from the driver′s mobile device is measured at a level equal to or greater than a predetermined reference value to transmit a recognizable soundwave of 2 to 24,000 Hz through three or more speakers installed in a vehicle; calculating the time required while the soundwave transmitted from the speakers reaches the driver′s mobile device to calculate a 3D location of the driver′s mobile device; receiving a door or trunk opening/closing command from the driver′s mobile device when the 3D location of the driver′s mobile device is within a predetermined second range (1 m); and controlling start of the vehicle when it is determined that the driver′s mobile device is located within a predetermined region in the vehicle after a door or a trunk is opened. Accordingly, the same function is applied to a door lock system, thereby implementing a function of automatic unlocking a door lock when a user approaches a vehicle and is within a predetermined distance but only when the user holds an authenticated mobile device.

Description

Smart control method and device for vehicle defending RSA using mobile device {omitted}

The present invention utilizes Bluetooth signals and sound waves to detect the location of the driver or the mobile device possessed by the driver, and defends the relay station attack (RSA) to open and close the door or trunk of the vehicle, start the vehicle, and the like. To control

Mobile devices such as smartphones are commonly used in modern society, and people use one mobile device to listen to music, the Internet, pay cards, and use public transportation without any other device.

By utilizing such a mobile device, it is possible to provide a high level of convenience for the driver by determining the driver's position, opening and closing the vehicle door and trunk, and controlling the starting of the vehicle without using the existing car key.

Referring to FIGS. 1 and 2, Honda Motor Co., Ltd. Publication No. US20120092129A1 discloses a key fob and a radio signal generated by a vehicle in a conventional smart key system to transmit and receive each other based on a received signal strength value. This shows how to find the location of Key Fob.

Referring to FIG. 3, according to Publication 2015 WO07 / 070064 of Driving Management Systems, Inc., a position tracking technique of an electric device using sound waves is described. Wireless technology standards for exchanging data, such as Bluetooth, connect mobile devices to hardware components that are independent of the mobile device, determine whether the mobile device is coupled to hardware components, and And transmitting the ultrasound signal and determining whether the driver is located in the driver's area of the vehicle in the mobile device.

In addition, according to KR 10-13814531 of the Inha University Industry-Academic Cooperation Agency, when the difference between the radio signal reception time and the signal sound reception time is less than the preset value, the transmission / reception system receiving the response of the vehicle is configured to open and close the vehicle with the radio signal but the sound signal is It is used as a means of verifying this.

Furthermore, the present invention can prevent vehicle theft accident and remote hacking by defending the RSA (Relay Station Attack) which is a security problem of the smart key system of the existing vehicle including the remote key by using radio signals and voice signals. It is required to solve existing security problems such as theft and hacking.

US 2012-0092129 A1 (2012.04.19.) WO 2015/070064 (2015.05.14.) KR 10-1381453 B1 (2014.04.04.)

An object of the present invention is to provide a secure smart key function from the RSA by using a mobile device.

According to an aspect of the present invention, a smart control method for a vehicle that protects a relay station attack (RSA) using a mobile device may include establishing a communication network to transmit and receive information with a driver's mobile device via Bluetooth or Wi-Fi. ; When the RSS (Received Signal Strength) value of the Bluetooth or Wi-Fi signal received from the driver's mobile device is measured above a predetermined reference value, it is determined that the position of the driver's mobile device is within a predetermined primary range (25m). Transmitting sound waves of 2 to 24000 Hz that are recognizable through three or more speakers mounted in the vehicle; Determining a 3D position of the driver's mobile device by calculating a time of arrival of the sound wave transmitted from the speaker to the driver's mobile device; Receiving an opening / closing command of a door or a trunk from the driver's mobile device when the 3D position of the driver's mobile device approaches a predetermined secondary range (1m); And after the door or the trunk is opened, if it is determined that the driver's mobile device is located in a predetermined area of the vehicle, controlling starting of the vehicle.

According to the present invention, by replacing the low frequency (LF) of the smart key of the existing vehicle with sound waves, the RSA can be defended while implementing the same function using only the mobile device without the smart key of the existing vehicle.

According to the present invention, a secure smart key function can be implemented from an RSA, and by applying this, a temporary key usable temporarily can be delegated to another user who wants to valet parking to temporarily control the vehicle.

According to the present invention, a temporary key that can be temporarily used can be delegated to be used only for opening a trunk, so that an authorized courier can open the trunk only when the authorized courier approaches the vehicle so that the object can be placed in the trunk.

According to the present invention, a temporary key that can be temporarily used can be delegated to be used only for opening a trunk, so that an authorized courier can open the trunk only when the authorized courier approaches the vehicle so that the object can be placed in the trunk.

According to the present invention, by applying the same function to the door lock system, if a user having an authenticated mobile device approaches within a certain distance, the door lock can be implemented without additional input.

1 to 2 are diagrams showing the recognition of the location of the key fob or opening and closing the vehicle in the existing smart key system.
3 is a diagram illustrating an existing technology for identifying a mobile device position using sound waves in a vehicle.
4 illustrates the principle of RSA.
5 is a view showing an outline of a position recognition system according to the present invention.
6 is a diagram illustrating a flow of transmitting and receiving a Bluetooth or sound wave signal between a vehicle and a driver's mobile device according to the present invention.
FIG. 7 illustrates a technique of recognizing a location of a mobile device in a vehicle using sound waves and a Bluetooth signal simultaneously according to the present invention.

Establishing a communication network to transmit and receive information to or from the driver's mobile device via Bluetooth or Wi-Fi; receiving a RSS (Received Signal Strength) value of a Bluetooth or Wi-Fi signal received from the driver's mobile device Determining that the location of the driver's mobile device is within a predetermined primary range and transmitting sound waves of 2 to 24000 Hz that are recognizable through three or more speakers mounted on the vehicle, wherein the sound waves transmitted from the speakers Determining a 3D position of the driver's mobile device by calculating a time of arrival of the driver's mobile device; when the 3D position of the driver's mobile device approaches a predetermined secondary range, Any command, including command to open or close a door or trunk from the driver's mobile device Receiving a dog and the door or trunk? Controlling the start-up of the vehicle if it is determined that the driver's mobile device is located in a predetermined area of the vehicle after performing any command including a command; Smart control method of vehicle to defend against Relay Station Attack (RSA) using

Embodiment for Invention

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In addition, in order to clearly disclose the present invention, parts not related to the present invention are omitted, and the same or similar reference numerals denote the same or similar elements in the drawings.

The objects and effects of the present invention may be naturally understood or more apparent from the following description, and the objects and effects of the present invention are not limited only by the following description.

The objects, features and advantages of the present invention will become more apparent from the following detailed description. In addition, in describing the present invention, when it is determined that the specific description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

4 is a diagram illustrating the principle of a relay station attack (RSA) to be defended in the present invention.

Referring to FIG. 4, the passive smart key, which is unlocked only by holding the door handle of the car while the smart key is placed in a bag or pocket, can be opened or opened without starting the key in the keyhole. It is characteristic that there is. This passive smart key is popularly used.

When an attacker 2 maintains a distance of 5 to 7 meters from a car owner who owns a passive smart key, an amplifier amplifies the frequency signal used by the car that the smart key sends. The thief 1, who was staying near the vehicle, transmits the amplified signal to the vehicle, releases the security device or lock, and gets on the vehicle to start the vehicle.

In this case, since the signal transmitted by the thief 1 to the vehicle is a signal including a valid command generated directly from the driver's smart key, even if the vehicle and the driver are far apart, the vehicle is unlocked through a third-party relay attack (RSA). It is possible to do In particular, the amplifier used by Burglar 2 may be small enough to be held in hand, and can amplify and transmit the signal of the smart key up to 30 meters away. In this case, even if the distance between the driver and the vehicle is more than 100 meters, the problem is that the door of the car can be opened and the engine can be turned on.

FIG. 5 illustrates the use of a received signal strength (RSS) value of a Bluetooth signal transmitted from a vehicle and a time of arrival (TOA) value of a sound wave (2 to 24,000 Hz frequency) transmitted from a speaker mounted on the vehicle according to the present invention. By identifying the driver's three-dimensional position (or the three-dimensional position of the driver's mobile device) represents the configuration of the system. Although described below as a Bluetooth signal, it is revealed in advance that a smart phone such as a Wi-Fi signal may be applied to an available radio signal. In addition, hereinafter referred to as a vehicle refers to a vehicle configured with a smart key system, which controls at least three speakers and at least one Bluetooth or Wi-Fi module and a speaker and a Bluetooth / WiFi signal, and controls the door or trunk of the vehicle. It is a system including a control unit for controlling the signal of the key and the start of the vehicle, a smart control device for a vehicle to defend the RSA by using a mobile device.

According to the present invention, in order to defend the RSA, the position of the driver's mobile device and the distance between the vehicle are measured using sound waves, and the vehicle is opened and closed by verifying this. Sound waves can be used to locate a driver's mobile device much more accurately than a Bluetooth or Wi-Fi signal. Because Bluetooth or Wi-Fi use a high frequency of a few GHz, while sound waves use a frequency of a few KHz, that is 1 / 1,000,000, so the distance can be measured more accurately.

According to the present invention, the distance between the driver's mobile device and the vehicle is measured by using a time difference between the sound wave signals generated by the at least three speakers to reach the mobile device.

The speaker is located inside or outside the vehicle and transmits a sound wave signal toward the driver's mobile device.

Bluetooth signals may also be used to convey security information and commands, as well as share absolute time values between vehicles and mobile devices.

For example, the Bluetooth signal may include a vehicle identification number, a current time, and an identification number of a randomly generated sound wave signal. The sound wave signal is transmitted for distance measurement, and may include an identification number encoded therein, and may be transmitted at a frequency of a band that is difficult for a human to hear.

The Bluetooth signal may be transmitted from the vehicle to the driver's mobile device by the primary specific code. This primary specific code may be a reference for causing the frequency of the sound waves emitted from each of the plurality of speakers to vary within a predetermined range.

First, the smart key application operates in the driver's mobile device 600 (S610). The application can be operated in the background and performs periodic or aperiodic communication actions such as pinging the car and Bluetooth connection.

When the distance between the driver's mobile device 600 and the vehicle 650 is within a predetermined distance (for example, 25 m), the vehicle 650 receives the Bluetooth connection request (S6x) transmitted from the driver's mobile device 600. In response, the vehicle transmits a response S620 to the driver's mobile device 600.

At this time, the driver's mobile device 600 performs an operation of turning on a microphone (mic) on the smart key application (S620). The vehicle 650 transmits sound wave signals from at least three internal or external speakers (S625). In this case, the sound wave signal transmitted from the speaker may be a stereo signal such as 4.1 channel, it may be a signal having a frequency in the range of 2 ~ 24,000Hz.

For example, three or more speakers mounted on the vehicle may transmit sound waves having different frequencies. This is to measure distance using frequency division.

As another example, the distance may be measured using a code division multiplexing method based on sound waves transmitted from three or more speakers mounted on the vehicle.

For example, after the primary specific code is transmitted from the vehicle to the driver's mobile device, the sound waves emitted by each of the speakers are varied within a predetermined range based on the primary specific code. A code relating to this change, that is, a second specific code corresponding to the first specific code, is transmitted from the driver's mobile device to the vehicle through the Bluetooth or Wi-Fi network. It is possible to control the vehicle when the secondary specific code received by the vehicle matches the tertiary specific code generated from the primary specific code.

The driver's mobile device 600 may time-synchronize with a Bluetooth signal received through a pre-connected network and a sound wave signal transmitted from at least three speakers, or may receive a sound wave signal transmitted from at least four speakers. The distance between the vehicle 600 and the vehicle 650 is calculated (S630).

The step of determining the 3D position by calculating the distance between the vehicle of the driver's mobile device may be calculated using a time of arrival (ToA) or a time difference of arrival (TDoA).

When the distance calculated by the driver's mobile device 600 is within a predetermined distance (eg, 1 m), the driver's mobile device 600 transmits a control permission signal to the vehicle 650 (S635). Since the vehicle 650 does not determine the position of the driver's mobile device 600, there is no need to worry about the signal being amplified by the relay station, and the control permit signal is transmitted directly from the driver's mobile device 600. Since the driver's mobile device 600 cannot be forged unless the signal is hacked, the RSA can be defended through the mobile device 600. The control permission signal is transmitted encrypted to prevent hacking.

In order to prevent the control permission signal from being hacked or forged, the vehicle may be set to be opened and closed only when the driver directly inputs (eg, touches) the catcher of the door.

When the vehicle 650 receives the control permission signal, the vehicle 650 releases the door or the trunk of the vehicle or prepares to start the vehicle (S640). For example, when the driver boards the vehicle after opening the door (or the trunk) of the vehicle and determines that the driver's mobile device is located inside the vehicle in a predetermined area within the vehicle, the starting of the vehicle is controlled. This prevents RSA using remote amplification.

7 is a flowchart illustrating a technique for recognizing a location of a mobile device in a vehicle using sound waves and a Bluetooth signal simultaneously according to the present invention.

Referring to FIG. 7, first, a driver's mobile device is recognized at a distance (at least 25m) by using a Bluetooth or Wi-Fi signal (S710). In this case, the Bluetooth or Wi-Fi module installed in the vehicle serves as a receiver for receiving a Bluetooth or Wi-Fi signal, and the driver's mobile device serves as a transmitter for transmitting a Bluetooth or Wi-Fi signal.

By receiving a Bluetooth or Wi-Fi signal from the vehicle, a communication network between the driver's mobile device and the vehicle is established (S720).

Based on the RSS (Received Signal Strength) value of the Bluetooth or Wi-Fi signal transmitted from the connected communication network between the vehicle and the driver's mobile device, the position of the driver's mobile device is based on a preset primary range (e.g. 25m or less from the vehicle) If judged to be within) starts the operation of the three or more speakers mounted on the vehicle (S730). Considering that the minimum distance that the driver should keep in mind when driving and opening the door is about 20m, it is desirable to set the actual Bluetooth communication distance to about 25m.

At this time, the speaker transmits a sound wave (2 ~ 24,000Hz) that can be recognized by the driver's mobile device. It is a subaudible frequency and better so that the driver or people around you will not be uncomfortable.

The vehicle determines a detailed 3D position (eg, a distance resolution of less than 10 cm) of the driver's mobile device by using a TOA method (S740).

If it is determined that the vehicle and the driver's mobile device are close to each other within a preset second range (about 2 m) based on the above-described detailed 3D position, prepare to receive an opening / closing command of the door or the trunk of the vehicle by a Bluetooth or Wi-Fi signal. (S750). This opens the vehicle's door, opens the trunk, or starts the vehicle. In this case, when the door is opened by pressing the door open button attached to the door catcher or only by catching the door catcher, the driver may open and close the door of the vehicle, and when the trunk opening / closing switch is pressed, the trunk may be opened and closed.

After opening the door (or trunk) of the vehicle, when the driver boards the vehicle and determines that the driver's mobile device is located inside the vehicle in a predetermined area within the vehicle, starting of the vehicle is controlled (S760). This prevents RSA using remote amplification.

According to the present invention, the approximate location outside the vehicle detects a Bluetooth or Wi-Fi signal generated within the vehicle and calculates the location using RSS (Received Signal Strength) method. Based on three or more transmitted sound waves, the position is calculated using a time of arrival (ToA) expression.

After a Bluetooth or Wi-Fi communication network is established between the vehicle and the driver's mobile device, the vehicle and the driver's mobile device synchronize time information.

The mobile device described above may be implemented as a hardware component, a software component, or a combination of hardware components and software components. For example, the devices and components described in the embodiments may be, for example, processors, controllers, arithmetic logic units (ALUs), digital signal processors, microcomputers, field programmable arrays (FPAs), It may be implemented using one or more general purpose or special purpose computers, such as a programmable logic unit (PLU), a microprocessor, a micro control unit (MCU) or any other device capable of executing and responding to instructions. The processing device may execute an operating system (OS) and one or more software applications running on the operating system. The processing device may also access, store, manipulate, process, and generate data in response to the execution of the software. For ease of understanding, the processing device may be described as one used, but one of ordinary skill in the art may include a processing device including a plurality of processing elements or a plurality of types of processing elements. It can be seen that. For example, the processing device may include a plurality of processors or one processor and one controller. In addition, the software may include a computer program, code, instructions, or a combination of one or more of the above, and configure the processing device to operate as desired, or independently or collectively. ) Command the processing device. Software or data may be any type of machine, component, physical device, virtual equipment, computer storage medium or device, or to be interpreted by or to provide instructions or data to the processing device, or It may be permanently or temporarily embodied in the signal wave being transmitted. The software may be distributed over networked computer systems so that they may be stored or executed in a distributed manner. Software and data may be stored on one or more computer readable recording media. The method according to the embodiment may be embodied in the form of program instructions that can be executed by various computer means and recorded in a computer readable medium. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. The program instructions recorded on the media may be those specially designed and constructed for the purposes of the embodiments, or they may be of the kind well-known and available to those having skill in the computer software arts. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical media such as CD-ROMs, DVDs, and magnetic disks, such as floppy disks. Magneto-optical media, and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include machine code, such as produced by a compiler, as well as language code that can be executed by a computer using an interpreter or the like. The hardware device described above may be configured to operate as one or more software modules to perform the operations of the embodiments, and vice versa.

Preferred embodiments of the present invention described above are disclosed for purposes of illustration, and those skilled in the art will be able to make various modifications, changes, and additions within the spirit and scope of the present invention. Should be regarded as falling within the scope of the above claims.

As those skilled in the art to which the present invention pertains, various permutations, modifications, and changes are possible without departing from the technical spirit of the present invention. It is not limited by.

In the exemplary system described above, the methods are described based on a flowchart as a series of steps or blocks, but the invention is not limited to the order of steps, and certain steps may occur in a different order or concurrently with other steps than those described above. Can be. In addition, those skilled in the art will appreciate that the steps shown in the flowcharts are not exclusive and that other steps may be included or one or more steps in the flowcharts may be deleted without affecting the scope of the present invention.

According to the present invention, by replacing the low frequency (LF) of the smart key of the existing vehicle with sound waves, the RSA can be defended while implementing the same function using only the mobile device without the smart key of the existing vehicle.

According to the present invention, a secure smart key function can be implemented from an RSA, and by applying this, a temporary key usable temporarily can be delegated to another user who wants to valet parking to temporarily control the vehicle.

According to the present invention, a temporary key that can be temporarily used can be delegated to be used only for opening a trunk, so that an authorized courier can open the trunk only when the authorized courier approaches the vehicle so that the object can be placed in the trunk.

According to the present invention, it is possible to apply to car sharing so that a plurality of authenticated users (eg, a specific group of people operating a family or a corporate vehicle) share access rights to the vehicle so that the vehicle can be used together.

According to the present invention, by applying the same function to the door lock system, if a user having an authenticated mobile device approaches within a certain distance, the door lock can be implemented without additional input.

Claims (8)

Establishing a communication network to transmit and receive information with a driver's mobile device via Bluetooth or Wi-Fi;
When the RSS (Received Signal Strength) value of the Bluetooth or Wi-Fi signal received from the driver's mobile device is measured to be greater than or equal to a predetermined reference value, it is determined that the position of the driver's mobile device is within a predetermined primary range, Transmitting a sound wave of 2 to 24000 Hz that can be recognized through three or more mounted speakers;
Determining a 3D position of the driver's mobile device by calculating a time of arrival of the sound waves transmitted from the speaker to the driver's mobile device;
When the 3D position of the driver's mobile device approaches a predetermined secondary range, receiving an instruction including an opening / closing command of a door or a trunk from the driver's mobile device; And
Dog in the door or trunk? Controlling the start-up of the vehicle if it is determined that the driver's mobile device is located in a predetermined area of the vehicle after performing any command including a command; Smart control method of vehicle to defend against Relay Station Attack (RSA) using The method of claim 1, wherein the determining of the 3D position of the driver's mobile device comprises:
Smart control method of a vehicle defending a relay station attack (RSA) using a mobile device, characterized in that calculated using the TDoA (Time Difference of Arrival). The method of claim 1,
Smart control method of the vehicle to protect the relay station attack (RSA) using a mobile device, characterized in that the three or more speakers mounted on the vehicle transmits sound waves of different frequencies. The method of claim 3, wherein
A frequency of sound waves emitted from each of the speakers varying within a predetermined range according to a first specific code received from Bluetooth or Wi-Fi;
Receiving a second specific code corresponding to the first specific code through the Bluetooth or Wi-Fi network; And
Using code division multiplexing to enable control of the vehicle when the second specific code matches a third specific code generated from the first specific code. Smart control method for vehicles defending against a relay station attack (RSA). The method of claim 1,
The predetermined primary range is 25m smart control method for a vehicle using a mobile device, characterized in that to defend the RSA. The method of claim 1,
The predetermined secondary range is 1m smart control method for a vehicle using a mobile device, characterized in that for defending the RSA. The method of claim 1,
Smart control method of the vehicle to protect the RSA by using a mobile device, characterized in that the door or the trunk of the vehicle is set to open and close only when the catcher of the door of the vehicle is input. A communication module for establishing a communication network and transmitting and receiving a Bluetooth or Wi-Fi signal to transmit and receive information with a driver's mobile device via Bluetooth or Wi-Fi;
When receiving a control signal indicating that a received signal strength (RSS) value of a Bluetooth or Wi-Fi signal received from the driver's mobile device is measured to be equal to or greater than a predetermined reference value, the position of the driver's mobile device is within a predetermined first range. And three or more speakers mounted inside or outside of the vehicle for transmitting sound waves of 2 to 24000 Hz that are recognized as recognized.
A door including a 3D position of the driver's mobile device, which has calculated the time of arrival that the sound waves transmitted from the speaker by the speaker at all times has reached the driver's mobile device, or When receiving a command to open and close the trunk from the driver's mobile device,
Relay for controlling the starting of the vehicle when the driver's mobile device is determined to be located in a predetermined area of the vehicle after opening the door or the trunk. Smart control device of the vehicle to defend against Station Attack.

Images