System and method for performing pre-authentication

By periodically performing pre-authentication when a mobile device enters the vehicle authentication area, and confirming proximity based on RSSI and connecting to the device with the smallest distance, the authentication delay caused by the performance differences of mobile devices is solved, thereby improving authentication efficiency and user experience.

CN122244978APending Publication Date: 2026-06-19HYUNDAI MOTOR CO LTD +1

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HYUNDAI MOTOR CO LTD
Filing Date
2024-12-17
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Due to performance differences in mobile devices, the connection speed is slow when wirelessly authenticating with vehicles, necessitating a solution to shorten the authentication time.

Method used

When a mobile device enters a pre-defined authentication area, pre-authentication is performed periodically by an integrated control unit. Based on RSSI, the proximity of the device is confirmed, and after successful authentication, the device is connected to the closest device, and the authentication result is stored.

Benefits of technology

Periodic pre-authentication reduces user waiting time and improves the convenience of vehicle control.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention relates to a system and method for performing pre-authentication. The system for performing pre-authentication includes: an integrated control unit that performs pre-authentication with a mobile device when the mobile device equipped with a digital key enters a pre-defined authentication area; and an authentication control unit that performs pre-authentication with the integrated control unit when the pre-authentication with the mobile device is successful, and stores the pre-authentication execution result.
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Description

Technical Field

[0001] Embodiments of the present invention relate to a system and method for performing pre-authentication. Background Technology

[0002] With the rapid development of digital key technology in vehicles, the number of car models using digital keys is constantly increasing. This digital key technology allows users to access their vehicles through communication between their mobile devices and the vehicle via methods such as Near Field Communication (NFC) and Bluetooth Low Energy (BLE).

[0003] At this point, wireless authentication between the vehicle and the mobile device is required during the use of the digital key.

[0004] However, due to performance differences in mobile devices, connection speeds to vehicles can be slow. For some lower-performance mobile devices, the time required for wireless authentication with the vehicle may be delayed. Therefore, a solution is needed to reduce the time required for wireless authentication with the vehicle. Summary of the Invention

[0005] This invention provides a system and method for performing pre-authentication.

[0006] The technical problems to be solved by the embodiments of the present invention are not limited thereto, but also include the objectives or effects that can be grasped from the technical solutions or implementation methods described below.

[0007] A system for performing pre-authentication according to an embodiment of the present invention may include: an integrated control unit configured to perform pre-authentication with a mobile device equipped with a digital key when the mobile device enters a pre-defined authentication area; and an authentication control unit configured to perform pre-authentication with the integrated control unit when the pre-authentication with the mobile device is successful, and to store the pre-authentication execution result.

[0008] The integrated control unit is configured to: when a mobile device enters the authentication area, confirm whether the mobile device is close to the vehicle, and perform pre-authentication when it is close to the vehicle.

[0009] The integrated control unit is configured to detect the Received Signal Strength Indicator (RSSI) of the wireless signal received from the mobile device, and based on the detected RSSI, determine whether the mobile device is close to the vehicle.

[0010] The integrated control unit is configured to: when it is determined that the pre-authentication should be performed, confirm whether the number of authentication executions is greater than or equal to n, where n is a positive integer; and periodically perform the pre-authentication when the number of authentication executions is less than n.

[0011] The integrated control unit is configured to: when the number of authentication executions is greater than or equal to n, confirm whether the number of authentication failures is greater than or equal to m, where m is a positive integer; and when the number of authentication failures is less than m, perform the pre-authentication.

[0012] The integrated control unit is configured to: when the result of pre-authentication is successful, drive a timer to record the time, and perform the pre-authentication again based on the recorded time.

[0013] The integrated control unit is configured to: when determining to perform the pre-authentication, confirm whether there are other successfully authenticated mobile devices; if there are other successfully authenticated mobile devices, perform pre-authentication with the mobile device that is closest to the vehicle among all mobile devices.

[0014] The integrated control unit is configured to: when other successfully authenticated mobile devices exist, calculate the distance between the first successfully authenticated mobile device and the vehicle and the distance between the second successfully authenticated mobile device and the vehicle; calculate the difference between the distance values, and when the calculated difference is greater than a preset threshold, establish a communication connection with the first successfully authenticated mobile device.

[0015] The integrated control unit is configured to connect to the mobile device with the smallest distance value from the vehicle when the calculated difference is less than or equal to a preset threshold value.

[0016] The authentication control unit is configured to send the pre-authentication execution result to the integrated control unit when a button operation request is received from the integrated control unit during the pre-authentication success period.

[0017] The method for performing pre-authentication according to an embodiment of the present invention may include the following steps: when a mobile device equipped with a digital key enters a pre-set authentication area, the integrated control unit performs pre-authentication with the mobile device; and when the pre-authentication with the mobile device is successful, the authentication control unit and the integrated control unit perform pre-authentication and store the pre-authentication execution result.

[0018] The pre-authentication process for a mobile device includes the following steps: when the mobile device enters the authentication area, confirming whether the mobile device is close to the vehicle, and performing the pre-authentication when the mobile device is close to the vehicle.

[0019] The pre-authentication process with the mobile device includes the following steps: detecting the Received Signal Strength Indicator (RSSI) of the wireless signal received from the mobile device, and confirming whether the mobile device is close to the vehicle based on the detected RSSI.

[0020] The pre-authentication process for mobile devices includes the following steps: when it is determined that the pre-authentication should be performed, confirm whether the number of authentication executions is greater than or equal to n, where n is a positive integer; when the number of authentication executions is less than n, perform the pre-authentication periodically.

[0021] The pre-authentication process for mobile devices includes the following steps: when the number of authentication attempts is greater than or equal to n, confirm whether the number of authentication failures is greater than or equal to m, where m is a positive integer; when the number of authentication failures is less than m, perform the pre-authentication.

[0022] The steps of performing pre-authentication with a mobile device include the following steps: when the result of performing the pre-authentication is that the pre-authentication is successful, driving a timer to record the time, and performing the pre-authentication again based on the recorded time.

[0023] The steps for performing pre-authentication with a mobile device include the following steps: when it is determined that the pre-authentication is to be performed, confirming whether there are other successfully authenticated mobile devices; if there are other successfully authenticated mobile devices, performing pre-authentication with the mobile device that is closest to the vehicle among all mobile devices.

[0024] The pre-authentication process with the mobile device includes the following steps: when other successfully authenticated mobile devices exist, calculate the distance between the first successfully authenticated mobile device and the vehicle and the distance between the second successfully authenticated mobile device and the vehicle, calculate the difference between the distance values, and when the calculated difference is greater than a preset threshold, establish a communication connection with the first successfully authenticated mobile device.

[0025] The pre-authentication process with mobile devices includes the following steps: when the calculated difference is less than or equal to a pre-defined threshold, connect to the mobile device with the smallest distance value from the vehicle.

[0026] The steps for storing the results of pre-authentication include the following: during successful pre-authentication, when a button operation request is received from the integrated control unit, the execution result of the pre-authentication is sent to the integrated control unit.

[0027] According to an embodiment of the present invention, when a user's mobile device enters the pre-authentication area of ​​a nearby vehicle, pre-authentication can be performed automatically and periodically, which can shorten the user's waiting time caused by performance differences of mobile devices.

[0028] According to embodiments of the present invention, user waiting time can be shortened, thereby making it easier to control the vehicle.

[0029] The various and beneficial advantages and effects of the present invention are not limited to those described above. These advantages and effects will be more easily understood in the process of describing specific embodiments of the present invention. Attached Figure Description

[0030] Figure 1 A diagram illustrating a system for performing pre-authentication according to an embodiment of the present invention.

[0031] Figure 2 A diagram illustrating a method for performing pre-authentication according to an embodiment of the present invention.

[0032] Figure 3 This is a diagram used to describe the area where pre-authentication is performed.

[0033] Figure 4 A diagram illustrating the pre-authentication execution process according to an embodiment of the present invention.

[0034] Figure 5 A diagram illustrating the pre-authentication execution process according to another embodiment of the present invention.

[0035] Figure 6 This diagram illustrates a scenario where multiple mobile devices exist within the authentication area.

[0036] Figure 7 A diagram illustrating the authentication logic processing procedure according to an embodiment of the present invention.

[0037] Explanation of reference numerals in the attached figures

[0038] 100: Vehicles

[0039] 110: Integrated Control Unit

[0040] 120: Authentication Control Unit

[0041] 200: Mobile devices

[0042] 300: Server. Detailed Implementation

[0043] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0044] However, the technical concept of the present invention is not limited to the described embodiments, but can be implemented in a variety of different forms, as long as it is within the scope of the technical concept of the present invention, one or more of the components between the embodiments can be selectively combined or replaced.

[0045] In addition, unless otherwise explicitly defined or described, the terms (including technical and scientific terms) used in the embodiments of the present invention should be understood to have the meanings commonly understood by those skilled in the art, such as common terms defined in dictionaries, whose meanings can be interpreted in the context of the relevant art.

[0046] Furthermore, the terminology used in the embodiments of this invention is only for describing the embodiments and is not intended to limit the invention.

[0047] In this specification, unless otherwise specified, the singular form also includes the plural form, and when stated as "at least one (or more) of A and (and) B, C", it shall be interpreted as including one or more of all combinations that can be made of A, B, and C.

[0048] Furthermore, when describing the components of embodiments of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish different components and do not limit the nature, order, or arrangement of the components.

[0049] Moreover, when describing a component as "connected," "joined," or "connected" to another component, it includes not only cases where the component is directly connected, joined, or connected to the other component, but also cases where it is indirectly "connected," "joined," or "connected" through other components between the component and the other component.

[0050] Furthermore, when described as being formed or arranged "above" or "below" of each component, "above" or "below" not only refers to the situation where two components are in direct contact with each other, but also includes the situation where one or more other components are formed or arranged between the two components. Additionally, when expressed as "above" or "below," based on a single component, it includes not only the upper direction but also the lower direction.

[0051] The embodiments aim to propose a new scheme that periodically and automatically performs pre-authentication when a user's mobile device enters the pre-authentication area of ​​a nearby vehicle.

[0052] Figure 1 A diagram illustrating a system for performing pre-authentication according to an embodiment of the present invention.

[0053] Reference Figure 1 According to embodiments of the present invention, a system for performing pre-authentication may include a vehicle 100, a mobile device 200, and a server 300. The vehicle 100 may include an integrated control unit 110 and an authentication control unit 120.

[0054] The integrated control unit 110 can wirelessly connect to the mobile device 200 and manage the wireless connection with the mobile device 200. The integrated control unit 110 can obtain the location information of the mobile device 200 based on the wireless signals received from the wirelessly connected mobile device 200.

[0055] At this time, the integrated control unit 110 and the mobile device 200 can wirelessly connect via Bluetooth Low Energy communication, but they are not limited to this. They can also achieve wireless communication connection via ultra-wideband (UWB) communication, near field communication (NFC), or other methods.

[0056] The integrated control unit 110 can communicate with the authentication control unit 120 and obtain vehicle status information such as power supply status and door lock status from the authentication control unit 120. The integrated control unit 110 can use the digital key and the mobile device 200 to perform the first pre-authentication and send an authentication request message including the result of the first pre-authentication to the authentication control unit 120, so as to periodically perform the second pre-authentication with the authentication control unit 120.

[0057] The authentication control unit 120 can communicate with the integrated control unit 110 and send vehicle status information to the integrated control unit 110. The authentication control unit 120 can receive authentication request messages from the integrated control unit 110 to perform a second pre-authentication with the integrated control unit 110. The authentication request message may include, but is not limited to, the result of the first pre-authentication and the location information of the mobile device 200.

[0058] Mobile device 200 can communicate with vehicle 100 and perform pre-authentication with the vehicle using a digital key. Upon successful pre-authentication, it can control various functions of vehicle 100. This digital key can be implemented through a mobile device application without requiring a physical form.

[0059] The mobile device 200 can communicate with the integrated control unit 110 in the vehicle via wireless communication such as Bluetooth Low Energy communication, but is not necessarily limited to this.

[0060] Server 300 can communicate with mobile device 200 and provide digital key to mobile device 200. Server 300 can store the unique number of the digital key.

[0061] Figure 2 A diagram illustrating a method for performing pre-authentication according to an embodiment of the present invention is provided. Figure 3 This is a diagram used to describe the area where pre-authentication is performed.

[0062] Reference Figure 2According to an embodiment of the present invention, the system for performing pre-authentication (hereinafter referred to as the "pre-authentication system") can obtain the vehicle's status information and confirm the vehicle's status based on the vehicle's status information (S210).

[0063] Then, the pre-authentication system can obtain the location information of the mobile device (S220).

[0064] Then, the pre-authentication system can confirm whether the user of the mobile device has entered the pre-set authentication area based on the obtained location information of the mobile device (S230).

[0065] like Figure 3 As shown, the authentication area may include a first area A1 for location verification, a second area A2 for performing pre-authentication, and a third area A3 for performing initiation authentication. The pre-authentication system will verify whether the mobile device has entered the second area A2.

[0066] The first area A1 and the second area A2 are pre-defined areas centered on the vehicle, but are not limited to this. In this case, the first area A1 and the second area A2 are areas outside the vehicle, which can be changed according to the user's request. The third area A3 can be an area inside the vehicle.

[0067] Then, the pre-authentication system can confirm whether the user is approaching the vehicle when the user enters the authentication area (S240). For example, the pre-authentication system can continuously confirm the Received Signal Strength Indicator (RSSI) of the wireless signal received from the mobile device, and based on the confirmed RSSI, confirm whether the user is approaching the vehicle.

[0068] Then, the pre-authentication system can periodically perform pre-authentication with the mobile device (S250) as the user approaches the vehicle. In this way, the pre-authentication system can control the vehicle by periodically performing pre-authentication with the mobile device.

[0069] Figure 4 A diagram illustrating the pre-authentication execution process according to an embodiment of the present invention.

[0070] Reference Figure 4 According to an embodiment of the present invention, the system for performing pre-authentication (hereinafter referred to as the "pre-authentication system") may, when determining that pre-authentication is to be performed periodically (S410), confirm whether the number of authentication executions is greater than or equal to n (n is a positive integer) (S420).

[0071] That is, in this embodiment, authentication will be performed periodically until it is performed n times.

[0072] Then, when the number of authentication attempts is greater than or equal to n, the pre-authentication system can confirm whether the number of authentication failures is greater than or equal to m (m is a positive integer) (S430). Furthermore, when the number of authentication attempts is greater than or equal to n and the number of authentication failures is greater than or equal to m, the pre-authentication system will terminate the pre-authentication process by ceasing authentication (S500).

[0073] At this point, the authentication failure count represents the number of consecutive authentication failures. That is, if authentication succeeds after a failure, the authentication failure count can be reset to 0.

[0074] Then, the pre-authentication system can perform pre-authentication when the number of authentication failures is less than m (S440, S450). For example, the pre-authentication system can perform a first pre-authentication between the mobile device and the integrated control unit (S440), and a second pre-authentication between the integrated control unit and the authentication control unit (S450).

[0075] Then, the pre-authentication system can confirm whether the pre-authentication was successful (S460). The pre-authentication system can confirm whether both the first and second pre-authentications were successful. Therefore, the pre-authentication system can determine that the pre-authentication was unsuccessful if either the first or second pre-authentication fails.

[0076] The pre-authentication system can then store the authentication success result (S470) and drive a timer to record the time (S480). The timer can record the time whenever an authentication success result is stored.

[0077] Then, the pre-authentication system can confirm whether the recorded time is greater than or equal to k seconds (S490). If the recorded time is greater than or equal to k seconds, the pre-authentication validity period can be determined to have expired, and the pre-authentication execution process can be repeated from the beginning.

[0078] Additionally, it's possible that multiple mobile devices, not just one, are equipped with the smart key, and these devices approach the vehicle simultaneously. The pre-authentication process using multiple smart keys is described below.

[0079] Figure 5 To illustrate a pre-authentication execution process according to another embodiment of the present invention, Figure 6 This diagram illustrates a scenario where multiple mobile devices exist within an authentication area.

[0080] Reference Figure 5 According to an embodiment of the present invention, the system for performing pre-authentication (hereinafter referred to as the "pre-authentication system") may, when determining that pre-authentication is to be performed periodically (S610), confirm whether there are other mobile devices that have been successfully authenticated (S620).

[0081] Then, if other successfully authenticated mobile devices are present, the pre-authentication system can calculate the distance values ​​between the vehicle and all mobile devices (S630). For example, such as Figure 6 As shown, when both mobile devices 200a and 200b are successfully authenticated, the distance values ​​S0 and S1 between each mobile device and the vehicle can be calculated.

[0082] Then, the pre-authentication system can calculate the difference between the calculated distance values ​​(S640). At this time, the difference can be set as the difference between the distance value between the first successfully authenticated mobile device and the vehicle and the minimum distance value between the second successfully authenticated mobile device and the vehicle. That is, when there are multiple second successfully authenticated mobile devices, only the minimum distance value is used to calculate the difference.

[0083] Then, the pre-certification system can compare the calculated difference with a pre-set threshold (S650). That is, the pre-certification system can confirm whether the calculated difference is greater than the threshold.

[0084] Then, when the difference is greater than the threshold, the pre-authentication system can determine that the distance between the first successfully authenticated mobile device and the second successfully authenticated mobile device is too far, and thus the connection between the first successfully authenticated mobile device and the vehicle can be maintained (S660).

[0085] Conversely, the pre-authentication system can determine that the distance between the first successfully authenticated mobile device and the second successfully authenticated mobile device is not far when the difference is not greater than the threshold value, and therefore can connect to the mobile device with the smallest distance value among all mobile devices (S670).

[0086] While the scenario of connecting to the mobile device with the smallest distance value when multiple mobile devices are close together is described as an example, it is not a strict limitation. For instance, it could be configured to connect to the mobile device that was authenticated first.

[0087] Figure 7 A diagram illustrating the authentication logic processing procedure according to an embodiment of the present invention.

[0088] Reference Figure 7 According to the embodiment, when the integrated control unit receives input for button operation during the pre-authentication execution (S710), it can send a request message for requesting button operation to the authentication control unit (S720). For example, the button may be a touch button in a handheld device for locking a vehicle door.

[0089] Then, upon receiving the request message, the authentication control unit can generate a response message including the pre-authentication success result and send the response message to the integrated control unit (S770).

[0090] Conversely, when a button operation is input after the pre-authentication execution period has ended, the integrated control unit may send a request message to the authentication control unit requesting control authentication for the button operation request (S722).

[0091] Then, if the authentication control unit receives the request message, it performs control authentication with the integrated control unit (S730), and if the result of the execution is successful control authentication ("Yes" in S740), it sends a response message including the result of successful control authentication to the integrated control unit (S772).

[0092] Conversely, if the authentication control unit fails to perform authentication (S740 "No"), it performs pre-authentication with the integrated control unit (S750), and if the result of the execution is successful pre-authentication (S760 "Yes"), it sends a response message including the result of successful pre-authentication to the integrated control unit (S774).

[0093] Conversely, the authentication control unit can store the result of the pre-authentication failure (S776) if the pre-authentication fails (S760 "No"). In this case, the authentication control unit can determine that all authentications have failed and does not send a separate response message to the integrated control unit when the pre-authentication fails.

[0094] This pre-authentication is performed as the mobile device approaches the vehicle, thus eliminating the need for separate authentication to control the vehicle.

[0095] In this embodiment, the term "~unit" can refer to software or hardware components such as field-programmable gate arrays (FPGAs) or application-specific integrated circuits (ASICs) that can perform certain functions. However, "~unit" is not limited to hardware or software. A "~unit" can be configured to reside in addressable memory or can be configured to be executed by one or more processors. Therefore, as an example, "~unit" includes components such as software components, object-oriented software components, class components, and task components; processes; functions; attributes; procedures; subroutines and program code segments; drivers; firmware; microcode; circuits; data; databases; data structures; tables; arrays; and variables. Components and the functions provided within a "~unit" can be combined into a smaller number of components and "~units," or can be further separated into complementary components and "~units." Furthermore, components and "~units" can also be implemented by one or more CPUs within a device or secure multimedia card.

[0096] The present invention has been described above with reference to preferred embodiments, but those skilled in the art can make various modifications and changes to the present invention without departing from the spirit and scope of the invention as set forth in the claims.

Claims

1. A system for performing pre-authentication, comprising: An integrated control unit is configured to perform pre-authentication with a mobile device equipped with a digital key when the mobile device enters a pre-defined authentication area. and The authentication control unit is configured to perform pre-authentication with the integrated control unit when pre-authentication with the mobile device is successful, and to store the result of the pre-authentication.

2. The system for performing pre-authentication according to claim 1, wherein, The integrated control unit is configured as follows: When the mobile device enters the authentication area, it is confirmed whether the mobile device is close to the vehicle, and pre-authentication is performed when the mobile device is close to the vehicle.

3. The system for performing pre-authentication according to claim 2, wherein, The integrated control unit is configured as follows: Detect the received signal strength indication of the wireless signal received from the mobile device. Based on the detected received signal strength, it is determined whether the mobile device is close to the vehicle.

4. The system for performing pre-authentication according to claim 1, wherein, The integrated control unit is configured as follows: When determining whether to perform the pre-authentication, it is confirmed whether the number of authentication executions is greater than or equal to n, where n is a positive integer. When the number of authentication executions is less than n, the pre-authentication is performed periodically.

5. The system for performing pre-authentication according to claim 4, wherein, The integrated control unit is configured as follows: When the number of authentication attempts is greater than or equal to n, check whether the number of authentication failures is greater than or equal to m, where m is a positive integer. If the number of authentication failures is less than m, perform the pre-authentication.

6. The system for performing pre-authentication according to claim 5, wherein, The integrated control unit is configured as follows: When the pre-authentication process is successful, a timer is activated to record the time. The pre-authentication will be performed again based on the recorded time.

7. The system for performing pre-authentication according to claim 1, wherein, The integrated control unit is configured as follows: When determining whether to perform the pre-authentication, it is confirmed whether there are other successfully authenticated mobile devices. If other successfully authenticated mobile devices exist, perform pre-authentication with the mobile device that is closest to the vehicle among all mobile devices.

8. The system for performing pre-authentication according to claim 7, wherein, The integrated control unit is configured as follows: If other successfully authenticated mobile devices are present, calculate the distance between the first successfully authenticated mobile device and the vehicle, as well as the distance between the second successfully authenticated mobile device and the vehicle. Calculate the difference between distance values, and when the calculated difference is greater than a preset threshold, establish a communication connection with the first successfully authenticated mobile device.

9. The system for performing pre-authentication according to claim 8, wherein, The integrated control unit is configured as follows: When the calculated difference is less than or equal to a preset threshold, connect to the mobile device with the smallest distance value from the vehicle.

10. The system for performing pre-authentication according to claim 1, wherein, The authentication control unit is configured as follows: During the successful pre-authentication process, when a button operation request is received from the integrated control unit, the execution result of the pre-authentication is sent to the integrated control unit.

11. A method for performing pre-authentication, comprising the following steps: When a mobile device equipped with a digital key enters a pre-defined authentication area, the integrated control unit performs pre-authentication with the mobile device. Upon successful pre-authentication with the mobile device, the authentication control unit and the integrated control unit perform pre-authentication and store the result of the pre-authentication.

12. The method for performing pre-authentication according to claim 11, wherein, The steps involved in performing pre-authentication with mobile devices include the following: When the mobile device enters the authentication area, it is confirmed whether the mobile device is close to the vehicle, and the pre-authentication is performed when the mobile device is close to the vehicle.

13. The method for performing pre-authentication according to claim 12, wherein, The steps involved in performing pre-authentication with mobile devices include the following: Detect the received signal strength indication of the wireless signal received from the mobile device. Based on the detected received signal strength, it is determined whether the mobile device is close to the vehicle.

14. The method for performing pre-authentication according to claim 11, wherein, The steps involved in performing pre-authentication with mobile devices include the following: When determining whether to perform the pre-authentication, it is confirmed whether the number of authentication executions is greater than or equal to n, where n is a positive integer. When the number of authentication executions is less than n, the pre-authentication is performed periodically.

15. The method for performing pre-authentication according to claim 14, wherein, The steps involved in performing pre-authentication with mobile devices include the following: When the number of authentication attempts is greater than or equal to n, check whether the number of authentication failures is greater than or equal to m, where m is a positive integer. If the number of authentication failures is less than m, perform the pre-authentication.

16. The method for performing pre-authentication according to claim 15, wherein, The steps involved in performing pre-authentication with mobile devices include the following: When the pre-authentication is successful, a timer is driven to record the time, and the pre-authentication is performed again based on the recorded time.

17. The method for performing pre-authentication according to claim 11, wherein, The steps involved in performing pre-authentication with mobile devices include the following: When determining whether to perform the pre-authentication, it is confirmed whether there are other successfully authenticated mobile devices. If other successfully authenticated mobile devices exist, perform pre-authentication with the mobile device that is closest to the vehicle among all mobile devices.

18. The method for performing pre-authentication according to claim 17, wherein, The steps involved in performing pre-authentication with mobile devices include the following: If other successfully authenticated mobile devices are present, calculate the distance between the first successfully authenticated mobile device and the vehicle, as well as the distance between the second successfully authenticated mobile device and the vehicle. Calculate the difference between distance values, and when the calculated difference is greater than a preset threshold, establish a communication connection with the first successfully authenticated mobile device.

19. The method for performing pre-authentication according to claim 18, wherein, The steps involved in performing pre-authentication with mobile devices include the following: When the calculated difference is less than or equal to a preset threshold, connect to the mobile device with the smallest distance value from the vehicle.

20. The method for performing pre-authentication according to claim 11, wherein, The steps for storing the results of the pre-authentication process include the following: During the successful pre-authentication process, when a button operation request is received from the integrated control unit, the execution result of the pre-authentication is sent to the integrated control unit.