A bluetooth reconnection optimization system, method and electronic device based on UWB

Abstract

This application discloses a UWB-based Bluetooth backlink optimization system, method, and electronic device, relating to the field of vehicle communication, including: a vehicle-side and a mobile phone-side that can cooperate with each other; the vehicle-side is equipped with a UWB chip, a Bluetooth module, multiple UWB anchor points, and a vehicle-mounted main system; the mobile phone-side is equipped with a UWB chip and a Bluetooth module that correspond to and match the vehicle-side; based on spatial perception and positioning using UWB technology, it guides the connection timing and connection target selection between Bluetooth modules, specifically including: the UWB chip is used to perform low-power monitoring, accurate ranging, and two-way encrypted authentication operations, during which the multiple UWB anchor points work in coordination with the UWB chip to locate the mobile phone-side; the vehicle-mounted main system receives the positioning data and authentication results transmitted by the UWB chip, and based on this data and results, controls the Bluetooth module to perform pre-wake-up and pre-connection operations, and loads user-personalized configurations.

Description

Technical Field

[0001] This application relates to the field of vehicle communication, and in particular to a UWB-based Bluetooth backlink optimization system, a UWB-based Bluetooth backlink optimization method, an electronic device, and a storage medium. Background Technology

[0002] Bluetooth enables in-vehicle infotainment systems to wirelessly connect and transfer data with Bluetooth devices such as smartphones and tablets. It's one of the most fundamental and core connectivity features in modern cars, with Bluetooth reconnection to the infotainment system playing a crucial role. It's far more than just "automatic connection." For the user, it's a seamless switch, silently establishing an audio bridge between the phone and the car the moment they get in, providing a safe, convenient, and smooth driving experience. For the system, it's the foundational link for integrating the in-vehicle infotainment system with the mobile device ecosystem, representing the first and crucial step towards seamless "human-vehicle-machine" interaction in a smart cockpit.

[0003] In a certain C100-10 project, issues such as slow speed, connection failure, and random disconnection occurred repeatedly with the Bluetooth back-connection problem, severely impacting the user experience. The root cause of the pain point of traditional Bluetooth back-connection lies in the contradiction between "weak centrality" (weak computing power of the vehicle's infotainment system) and "fragmentation" (numerous brands and systems of mobile phones and vehicle infotainment systems). To address this issue, new technologies are needed to optimize the Bluetooth back-connection mechanism, starting from the root cause and making targeted optimizations. Summary of the Invention

[0004] The purpose of this invention is to provide a UWB-based Bluetooth backconnection optimization system, a UWB-based Bluetooth backconnection optimization method, an electronic device, and a storage medium, thereby solving at least one of a number of technical problems.

[0005] The core pain points of traditional Bluetooth reconnection—slow speed, connection failure, and random disconnection—stem from the contradiction between a "weak centrality" (weak computing power in the vehicle's infotainment system) and "fragmentation" (numerous brands and systems of mobile phones / vehicle infotainment systems). The "device contention" problem when multiple devices coexist prevents automatic priority identification and connection to the driver's seat phone, impacting vehicle efficiency. The blind nature of Bluetooth connections, requiring a lengthy device scanning process, leads to connection delays and prevents a seamless experience. Insufficient security makes it vulnerable to relay attacks or signal spoofing, making it impossible to confirm the device's true physical location. Disorganized signal processing, with unconvertible periodic signals interfering with system operation, and irrelevant and redundant signals increasing the computing burden on the vehicle's infotainment system. Furthermore, Bluetooth reconnection is disconnected from vehicle unlocking, starting, and sleep functions, failing to achieve seamless end-to-end coordination.

[0006] This invention provides the following solution:

[0007] According to a first aspect of the present invention, a UWB-based Bluetooth reconnection optimization system is provided, comprising: a vehicle end and a mobile phone end that can cooperate with each other;

[0008] The vehicle is equipped with a UWB chip, Bluetooth module, multiple UWB anchor points, and vehicle infotainment system.

[0009] The mobile device is equipped with a UWB chip and Bluetooth module that are compatible with the vehicle.

[0010] Based on UWB technology, spatial awareness and positioning guide the timing and selection of connection targets between Bluetooth modules, specifically including:

[0011] The UWB chip is used to perform low-power monitoring, precise ranging, and two-way encryption authentication operations. During this process, multiple UWB anchor points work together with the UWB chip to locate the position of the mobile phone.

[0012] The vehicle's main system receives positioning data and authentication results transmitted by the UWB chip, and uses this data and results to control the Bluetooth module to perform pre-wake-up and pre-connection operations, and loads the user's personalized configuration.

[0013] Among these features, the system performs frequency multiplication on periodic Bluetooth signals that cannot be converted, automatically identifies and rejects Bluetooth signals that are irrelevant to system operation, and automatically detects and unsubscribes from unnecessary Bluetooth signals to reduce the system's operational burden.

[0014] Furthermore, including:

[0015] Multiple UWB anchor points are deployed at preset positions on both sides of the vehicle body, specifically including the left and right rearview mirrors and the front and rear bumpers;

[0016] Based on the triangulation method, multiple UWB anchor points work in concert with the UWB chip to achieve directional positioning of the mobile phone.

[0017] Furthermore, including:

[0018] The UWB chip operates in a frequency range of 3.1GHz-10.6GHz, with a bandwidth exceeding 500MHz;

[0019] Among these measures, the UWB chip's ability to control interference from the working environment is controlled by setting nanosecond-level pulse sequences for data transmission and setting the transmission power to be lower than a preset background noise level.

[0020] Furthermore, including:

[0021] Precise ranging function of UWB chip driven by Time-of-Flight (ToF) algorithm;

[0022] The algorithm formula includes: Distance = Speed ​​of light × Time of flight;

[0023] The control time measurement accuracy is at the picosecond level, ensuring centimeter-level distance measurement to meet the preset location positioning accuracy settings on the mobile phone.

[0024] Furthermore, including:

[0025] The pre-connection process of the Bluetooth module includes three steps: pre-wake-up, target Bluetooth address matching, and link layer negotiation.

[0026] Furthermore, this process must be completed before the user enters the vehicle;

[0027] If the self-test is not completed before the user enters the vehicle, the vehicle's main system will announce the initiation of self-testing of the UWB chip, Bluetooth module, and / or multiple UWB anchor points, and notify the mobile device to initiate self-testing of the UWB chip and / or Bluetooth module.

[0028] If the configuration is completed before the user enters the vehicle, the parameters will be configured based on the user's personalized configuration data retrieved via Bluetooth connection, including seat position parameters, air conditioning operation parameters, and user-defined in-vehicle entertainment system configuration parameters.

[0029] According to a second aspect of the present invention, a UWB-based Bluetooth backconnection optimization method is provided, applied to the UWB-based Bluetooth backconnection optimization system of claims 1 to 5, wherein the UWB-based Bluetooth backconnection optimization method comprises:

[0030] Step S1, External Detection and Location Stage: The vehicle-side UWB chip periodically sends broadcast signals or listens for surrounding UWB signals in low-power mode. When a user carrying a matching mobile phone enters the preset detection range, the mobile phone-side UWB chip is activated.

[0031] The actual distance between the mobile device and the vehicle is calculated using a time-of-flight ranging algorithm, and combined with triangulation of multiple UWB anchor points to achieve distance measurement and orientation determination; at the same time, two-way encrypted authentication based on public-key cryptography is initiated.

[0032] Step S2, Intelligent Pre-connection and Preparation Stage: The vehicle's main system pre-wakes up from sleep mode based on the authentication result and location judgment of the UWB chip, and loads the user's personalized configuration.

[0033] The vehicle's main system sends a directional connection command to the Bluetooth module. The Bluetooth module skips the device scanning process and directly matches the Bluetooth address of the target mobile phone to complete the link layer connection preparation.

[0034] Step S3, Seamless Entry and Use Stage: Based on the correct authentication result of the UWB chip, the vehicle is started and unlocked without contact. During this process, the UWB chip is used to measure distance and identify the user entering the vehicle. Then, the vehicle's main system controls the vehicle system to power on.

[0035] With the Bluetooth module already pre-connected, Bluetooth audio and telephone functions are ready, enabling the mobile phone to reconnect to the vehicle's main system via Bluetooth.

[0036] Step S4, Off-vehicle intelligent management stage: The UWB chip continuously tracks the location of the mobile phone. When it detects that the mobile phone has moved from inside the vehicle to outside the vehicle and the distance is increasing, the system determines that the user has left the vehicle. Then the vehicle's main system starts the preset automatic operation of raising the windows, locking the car, disconnecting Bluetooth, and putting the whole vehicle system into sleep mode.

[0037] Furthermore, including:

[0038] During the vehicle's external detection of mobile devices and the location phase, the UWB chip's low-power monitoring mode is triggered periodically. The complete UWB communication process is initiated only when an authorized mobile device's UWB signal is detected. This includes triangulation using multiple UWB anchor points to achieve distance measurement and orientation determination; at the same time, two-way encrypted authentication based on public-key cryptography is initiated.

[0039] Furthermore, including:

[0040] During the off-vehicle intelligent management phase, the vehicle's main system determines that the user has left the vehicle based on the following conditions: the mobile phone is detected to be outside the vehicle for 3 consecutive seconds, and the distance between the mobile phone and the vehicle increases by at least 0.5 meters per second.

[0041] According to a third aspect of the present invention, an electronic device is provided, comprising: a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other via the communication bus;

[0042] The memory stores a computer program that, when executed by the processor, causes the processor to perform steps such as the UWB-based Bluetooth backlink optimization method.

[0043] According to a fourth aspect of the present invention, a computer-readable storage medium is provided storing a computer program executable by an electronic device, which, when run on the electronic device, causes the electronic device to perform steps such as a UWB-based Bluetooth backlink optimization method.

[0044] The above solution achieves the following beneficial technical effects:

[0045] This application utilizes UWB pre-wake-up of the vehicle's infotainment system and Bluetooth module to bypass the scanning process and directly connect, achieving "zero" waiting time for reconnection and completely resolving issues such as slow connection, failure, and disconnection. Connection efficiency is significantly improved.

[0046] This application utilizes UWB centimeter-level positioning and triangulation to automatically identify and prioritize the connection of the driver's seat mobile phone. After the driver leaves the vehicle, it intelligently switches to the passenger-side device, completely resolving the issue of "device competing for the line." This ensures precise device connection.

[0047] This application utilizes UWB Time-of-Flight (ToF) real-time ranging and public-key cryptography-based two-way encryption authentication to effectively defend against relay attacks and signal spoofing, ensuring the device remains within its actual physical range. Security is significantly enhanced.

[0048] This application reduces the computational burden on the vehicle's infotainment system and improves system stability by using periodic signal frequency multiplication processing, automatic rejection of irrelevant signals, and unsubscription of redundant signals. System load optimization is also achieved.

[0049] This application achieves seamless interaction between people, vehicles, and machines through a four-stage closed loop: "exterior-entry-interior-exit," enabling contactless unlocking, automatic power-on, loading of personalized configurations (seats / air conditioning), and automatic window locking / disconnection / sleep upon exiting the vehicle. The entire process is seamless and collaborative.

[0050] This application leverages the wide spectrum, low power characteristics, and high time resolution of UWB to distinguish multipath reflection signals, maintaining positioning and connection stability even in complex environments without interfering with other wireless devices. Anti-interference capabilities have been upgraded. Attached Figure Description

[0051] Figure 1 This is a structural diagram of a Bluetooth backlink optimization system based on UWB provided by one or more embodiments of the present invention.

[0052] Figure 2 This is a flowchart of a Bluetooth reconnection optimization method based on UWB provided by one or more embodiments of the present invention.

[0053] Figure 3 This is a schematic diagram of a Bluetooth reconnection process provided in a specific embodiment of the present invention.

[0054] Figure 4 This is a block diagram of an electronic device structure for a Bluetooth backlink optimization method based on UWB provided in one or more embodiments of the present invention. Detailed Implementation

[0055] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are one module of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0056] Figure 1 This is a structural diagram of a Bluetooth backlink optimization system based on UWB provided by one or more embodiments of the present invention.

[0057] like Figure 1 The UWB-based Bluetooth backlink optimization system shown includes: a vehicle-side and a mobile phone-side device that can work together.

[0058] The vehicle is equipped with a UWB chip, Bluetooth module, multiple UWB anchor points, and vehicle infotainment system.

[0059] The mobile device is equipped with a UWB chip and Bluetooth module that are compatible with the vehicle.

[0060] Based on UWB technology, spatial awareness and positioning guide the timing and selection of connection targets between Bluetooth modules, specifically including:

[0061] The UWB chip is used to perform low-power monitoring, precise ranging, and two-way encryption authentication operations. During this process, multiple UWB anchor points work together with the UWB chip to locate the position of the mobile phone.

[0062] The vehicle's main system receives positioning data and authentication results transmitted by the UWB chip, and uses this data and results to control the Bluetooth module to perform pre-wake-up and pre-connection operations, and loads the user's personalized configuration.

[0063] Among these features, the system performs frequency multiplication on periodic Bluetooth signals that cannot be converted, automatically identifies and rejects Bluetooth signals that are irrelevant to system operation, and automatically detects and unsubscribes from unnecessary Bluetooth signals to reduce the system's operational burden.

[0064] In this embodiment, it includes:

[0065] Multiple UWB anchor points are deployed at preset positions on both sides of the vehicle body, specifically including the left and right rearview mirrors and the front and rear bumpers;

[0066] Based on the triangulation method, multiple UWB anchor points work in concert with the UWB chip to achieve directional positioning of the mobile phone.

[0067] In this embodiment, it includes:

[0068] The UWB chip operates in a frequency range of 3.1GHz-10.6GHz, with a bandwidth exceeding 500MHz;

[0069] Among these measures, the UWB chip's ability to control interference from the working environment is controlled by setting nanosecond-level pulse sequences for data transmission and setting the transmission power to be lower than a preset background noise level.

[0070] In this embodiment, it includes:

[0071] Precise ranging function of UWB chip driven by Time-of-Flight (ToF) algorithm;

[0072] The algorithm formula includes: Distance = Speed ​​of light × Time of flight;

[0073] The control time measurement accuracy is at the picosecond level, ensuring centimeter-level distance measurement to meet the preset location positioning accuracy settings on the mobile phone.

[0074] In this embodiment, it includes:

[0075] The pre-connection process of the Bluetooth module includes three steps: pre-wake-up, target Bluetooth address matching, and link layer negotiation.

[0076] Furthermore, this process must be completed before the user enters the vehicle;

[0077] If the self-test is not completed before the user enters the vehicle, the vehicle's main system will announce the initiation of self-testing of the UWB chip, Bluetooth module, and / or multiple UWB anchor points, and notify the mobile device to initiate self-testing of the UWB chip and / or Bluetooth module.

[0078] If the configuration is completed before the user enters the vehicle, the parameters will be configured based on the user's personalized configuration data retrieved via Bluetooth connection, including seat position parameters, air conditioning operation parameters, and user-defined in-vehicle entertainment system configuration parameters.

[0079] Figure 2 This is a flowchart of a Bluetooth reconnection optimization method based on UWB provided by one or more embodiments of the present invention.

[0080] like Figure 2 The UWB-based Bluetooth backconnection optimization method shown is applied to a UWB-based Bluetooth backconnection optimization system. The UWB-based Bluetooth backconnection optimization method includes:

[0081] Step S1, External Detection and Location Stage: The vehicle-side UWB chip periodically sends broadcast signals or listens for surrounding UWB signals in low-power mode. When a user carrying a matching mobile phone enters the preset detection range, the mobile phone-side UWB chip is activated.

[0082] The actual distance between the mobile device and the vehicle is calculated using a time-of-flight ranging algorithm, and combined with triangulation of multiple UWB anchor points to achieve distance measurement and orientation determination; at the same time, two-way encrypted authentication based on public-key cryptography is initiated.

[0083] Step S2, Intelligent Pre-connection and Preparation Stage: The vehicle's main system pre-wakes up from sleep mode based on the authentication result and location judgment of the UWB chip, and loads the user's personalized configuration.

[0084] The vehicle's main system sends a directional connection command to the Bluetooth module. The Bluetooth module skips the device scanning process and directly matches the Bluetooth address of the target mobile phone to complete the link layer connection preparation.

[0085] Step S3, Seamless Entry and Use Stage: Based on the correct authentication result of the UWB chip, the vehicle is started and unlocked without contact. During this process, the UWB chip is used to measure distance and identify the user entering the vehicle. Then, the vehicle's main system controls the vehicle system to power on.

[0086] With the Bluetooth module already pre-connected, Bluetooth audio and telephone functions are ready, enabling the mobile phone to reconnect to the vehicle's main system via Bluetooth.

[0087] Step S4, Off-vehicle intelligent management stage: The UWB chip continuously tracks the location of the mobile phone. When it detects that the mobile phone has moved from inside the vehicle to outside the vehicle and the distance is increasing, the system determines that the user has left the vehicle. Then the vehicle's main system starts the preset automatic operation of raising the windows, locking the car, disconnecting Bluetooth, and putting the whole vehicle system into sleep mode.

[0088] In this embodiment, it includes:

[0089] During the vehicle's external detection of mobile devices and the location phase, the UWB chip's low-power monitoring mode is triggered periodically. The complete UWB communication process is initiated only when an authorized mobile device's UWB signal is detected. This includes triangulation using multiple UWB anchor points to achieve distance measurement and orientation determination; at the same time, two-way encrypted authentication based on public-key cryptography is initiated.

[0090] In this embodiment, it includes:

[0091] During the off-vehicle intelligent management phase, the vehicle's main system determines that the user has left the vehicle based on the following conditions: the mobile phone is detected to be outside the vehicle for 3 consecutive seconds, and the distance between the mobile phone and the vehicle increases by at least 0.5 meters per second.

[0092] It is worth noting that although this system / device only discloses the above-mentioned modules / units, it does not mean that this system / device is limited to the above-mentioned basic functional modules. On the contrary, what this invention intends to express is that, based on the above-mentioned basic functional modules, those skilled in the art can add one or more functional modules in combination with the prior art to form an infinite number of embodiments or technical solutions. That is to say, this system is open rather than closed. It cannot be assumed that the scope of protection of the claims of this invention is limited to the above-disclosed basic functional modules just because this embodiment only discloses a few basic functional modules.

[0093] In one specific embodiment, a method as follows is disclosed Figure 3 The Bluetooth reconnection process is shown below.

[0094] By leveraging UWB to achieve high-precision and high-security spatial awareness and positioning, the timing and target selection for Bluetooth connections can be guided and optimized, thereby upgrading Bluetooth from "blind connection" to "spatially aware intelligent connection." The entire system requires both the vehicle and the mobile phone to have UWB chips and corresponding Bluetooth modules. Its workflow can be divided into four stages: outside the vehicle, entering the vehicle, inside the vehicle, and leaving the vehicle.

[0095] Phase 1: External Vehicle Detection and Location (Core New Component)

[0096] 1. Low-power monitoring and triggering:

[0097] When the vehicle is in sleep mode, its UWB chip periodically sends broadcast signals or listens for surrounding UWB signals with extremely low power consumption.

[0098] When a car owner brings a UWB-enabled mobile phone into the detection range (e.g., 10-20 meters), the phone's UWB chip will be activated.

[0099] 2. Precise distance measurement and positioning:

[0100] UWB communication begins between the vehicle and the mobile phone. By calculating the signal's time of flight, the system can determine the actual distance between the mobile phone and the vehicle with centimeter-level accuracy.

[0101] By deploying multiple UWB anchor points on both sides of the vehicle body (such as the left and right rearview mirrors and front and rear bumpers), the system can use triangulation to not only calculate the distance, but also accurately determine the location of the mobile phone in the vehicle (e.g., 1.5 meters away from the driver's side door).

[0102] 3. Secure Identity Authentication:

[0103] Throughout the UWB communication process, two-way, public-key cryptography-based encryption authentication is performed. This ensures that the approaching device is an authorized vehicle owner's phone, and not another device, effectively preventing relay attacks.

[0104] Phase Two: Intelligent Pre-connection and Preparation

[0105] 1. Contextual judgment and pre-awakening:

[0106] When the UWB system confirms that the visitor is the vehicle owner and that their location is on the driver's side, it sends a signal to the vehicle's main infotainment system.

[0107] The vehicle's infotainment system is pre-wake up from sleep mode. At the same time, the system loads the user's personalized profile (seat position, air conditioning settings, etc.).

[0108] 2. Command Bluetooth pre-connection:

[0109] The UWB system or the vehicle's main infotainment system will send a command to the Bluetooth module: "Prepare to connect to the phone in the driver's seat."

[0110] The Bluetooth module is woken up in advance and directly points to the target phone's Bluetooth address, skipping the lengthy device discovery and scanning process and directly entering the connection preparation phase. At this point, the Bluetooth link layer connection between the two parties may have been almost fully established.

[0111] Phase Three: Seamless Entry and Use

[0112] 1. Seamless unlocking and power-on:

[0113] The user opens the car door (UWB authentication is complete, and the door lock opens automatically) and sits in the driver's seat.

[0114] The vehicle system is fully powered on.

[0115] 2. "Zero" waiting for a response:

[0116] Because the Bluetooth connection is already set up in the background, Bluetooth audio and phone functions are available as soon as the user is seated and the vehicle starts. The user experiences no connection delay, achieving true "zero" wait time for reconnection.

[0117] Phase Four: Off-vehicle Intelligent Management

[0118] 3. Determine the intention to leave the vehicle:

[0119] UWB continuously tracks the phone's location. When it detects the phone moving from inside the car to outside, and the distance gradually increases, the system determines that the user has left.

[0120] 4. Secure disconnection and hibernation:

[0121] The system will perform a series of operations: automatically raising the windows, locking the car, disconnecting the Bluetooth connection, and finally putting the entire vehicle system into a sleep state. The entire process requires no user intervention, making it both safe and energy-efficient.

[0122] Figure 4 This is a block diagram of an electronic device structure for a Bluetooth backlink optimization method based on UWB provided in one or more embodiments of the present invention.

[0123] like Figure 4 As shown, this application provides an electronic device, including: a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus;

[0124] The memory stores a computer program that, when executed by the processor, causes the processor to perform steps of a UWB-based Bluetooth backlink optimization method.

[0125] This application also provides a computer-readable storage medium storing a computer program executable by an electronic device, which, when run on the electronic device, causes the electronic device to perform the steps of a UWB-based Bluetooth backlink optimization method.

[0126] This application also provides a vehicle platform, including:

[0127] An electronic device for implementing a UWB-based Bluetooth backlink optimization method;

[0128] The processor runs a program that, when running, executes steps of a UWB-based Bluetooth reconnection optimization method based on data output from the electronic device.

[0129] Storage medium for storing programs that, when running, execute steps of a UWB-based Bluetooth reconnection optimization method on data output from an electronic device.

[0130] The communication bus mentioned in the above electronic devices can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. This communication bus can be divided into address bus, data bus, control bus, etc. For ease of illustration, only one thick line is used to represent it in the diagram, but this does not indicate that there is only one bus or one type of bus.

[0131] The electronic device comprises a hardware layer, an operating system layer running on top of the hardware layer, and an application layer running on the operating system. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory. The operating system can be any one or more computer operating systems that control the electronic device through processes, such as Linux, Unix, Android, iOS, or Windows. Furthermore, in this embodiment of the invention, the electronic device can be a smartphone, tablet computer, or other handheld device, or a desktop computer, portable computer, or other electronic device; there is no particular limitation in this embodiment.

[0132] In this embodiment of the invention, the executing entity for electronic device control can be an electronic device itself, or a functional module within an electronic device capable of calling and executing a program. The electronic device can obtain the firmware corresponding to the storage medium. This firmware is provided by the supplier, and different storage media may have the same or different firmware; no limitation is made here. After obtaining the firmware corresponding to the storage medium, the electronic device can write this firmware into the storage medium; specifically, it burns the firmware corresponding to the storage medium into the storage medium. The process of burning the firmware into the storage medium can be implemented using existing technology, and will not be elaborated upon in this embodiment of the invention.

[0133] Electronic devices can also obtain reset commands corresponding to the storage media. The reset commands corresponding to the storage media are provided by the supplier. The reset commands corresponding to different storage media can be the same or different, and no restrictions are imposed here.

[0134] At this time, the storage medium of the electronic device is a storage medium on which the corresponding firmware has been written. The electronic device can respond to the reset command corresponding to the storage medium on which the corresponding firmware has been written, thereby resetting the storage medium on which the corresponding firmware has been written according to the reset command. The process of resetting the storage medium according to the reset command can be implemented by existing technology and will not be described in detail in this embodiment of the invention.

[0135] For ease of description, the above devices are described separately by function as various units and modules. Of course, in implementing this application, the functions of each unit and module can be implemented in one or more software and / or hardware.

[0136] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the meaning consistent with their meaning in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined.

[0137] For the sake of simplicity, the method embodiments are described as a series of actions. However, those skilled in the art should understand that the embodiments of the present invention are not limited to the described order of actions, because according to the embodiments of the present invention, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions involved are not necessarily essential to the embodiments of the present invention.

[0138] As can be seen from the above description of the embodiments, those skilled in the art can clearly understand that this application can be implemented by means of software plus necessary general-purpose hardware platforms. Based on this understanding, the technical solution of this application, or the module that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in various embodiments or certain modules of the embodiments of this application.

[0139] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to the modules or all technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A Bluetooth reconnection optimization system based on UWB, characterized in that, include: Vehicle-mounted and mobile-mounted terminals that can work together; The vehicle is equipped with a UWB chip, a Bluetooth module, multiple UWB anchor points, and a vehicle infotainment system. The mobile device is equipped with a UWB chip and Bluetooth module that are compatible with the vehicle device. Based on UWB technology, spatial awareness and positioning guide the timing and selection of connection targets between Bluetooth modules, specifically including: The UWB chip is used to perform low-power monitoring, accurate ranging, and two-way encryption authentication operations. During this process, the multiple UWB anchor points work in conjunction with the UWB chip to locate the position of the mobile phone. The vehicle's main system receives positioning data and authentication results transmitted by the UWB chip, and uses this data and results to control the Bluetooth module to perform pre-wake-up and pre-connection operations, and loads the user's personalized configuration. Among these features, the system performs frequency multiplication on periodic Bluetooth signals that cannot be converted, automatically identifies and rejects Bluetooth signals that are irrelevant to system operation, and automatically detects and unsubscribes from unnecessary Bluetooth signals to reduce the system's operational burden.

2. The UWB-based Bluetooth reconnection optimization system according to claim 1, characterized in that, include: The multiple UWB anchor points are deployed at preset positions on both sides of the vehicle body, specifically including the left and right rearview mirrors and the front and rear bumpers; Based on the triangulation method, the multiple UWB anchor points work in conjunction with the UWB chip to achieve directional positioning of the mobile phone.

3. The UWB-based Bluetooth reconnection optimization system according to claim 1, characterized in that, include: The operating frequency range of the UWB chip is set to 3.1GHz-10.6GHz, with a bandwidth exceeding 500MHz; Among these measures, the UWB chip's ability to control interference from the working environment is controlled by setting nanosecond-level pulse sequences for data transmission and setting the transmission power to be lower than a preset background noise level.

4. The UWB-based Bluetooth reconnection optimization system according to claim 1, characterized in that, include: The precise ranging function of the UWB chip is driven by the Time-of-Flight (ToF) algorithm. The algorithm formula includes: Distance = Speed ​​of light × Time of flight; The control time measurement accuracy is at the picosecond level, ensuring centimeter-level distance measurement to meet the preset location positioning accuracy settings on the mobile phone.

5. The UWB-based Bluetooth reconnection optimization system according to claim 1, characterized in that, include: The pre-connection process of the Bluetooth module includes three steps: pre-wake-up, target Bluetooth address matching, and link layer negotiation. Furthermore, this process must be completed before the user enters the vehicle; If the self-test is not completed before the user enters the vehicle, the vehicle's main system will announce the initiation of self-testing of the UWB chip, Bluetooth module, and / or multiple UWB anchor points, and notify the mobile device to initiate self-testing of the UWB chip and / or Bluetooth module. If the configuration is completed before the user enters the vehicle, the user's personalized configuration data retrieved via Bluetooth will be used to configure parameters, including seat position parameters, air conditioning operating parameters, and user-defined in-vehicle entertainment system configuration parameters.

6. A Bluetooth reconnection optimization method based on UWB, characterized in that, The UWB-based Bluetooth reconnection optimization method, applied to the UWB-based Bluetooth reconnection optimization system according to claims 1 to 5, comprises: Step S1, External Detection and Location Stage: The vehicle-side UWB chip periodically sends broadcast signals or listens for surrounding UWB signals in low-power mode. When a user carrying a matching mobile phone enters the preset detection range, the mobile phone-side UWB chip is activated. The actual distance between the mobile device and the vehicle is calculated using a time-of-flight ranging algorithm, and combined with triangulation of multiple UWB anchor points to achieve distance measurement and orientation determination; at the same time, two-way encrypted authentication based on public-key cryptography is initiated. Step S2, Intelligent Pre-connection and Preparation Stage: The vehicle's main system pre-wakes up from sleep mode based on the authentication result and location judgment of the UWB chip, and loads the user's personalized configuration. The vehicle's main system sends a directional connection command to the Bluetooth module. The Bluetooth module skips the device scanning process and directly matches the Bluetooth address of the target mobile phone to complete the link layer connection preparation. Step S3, Seamless Entry and Use Stage: Based on the correct authentication result of the UWB chip, the vehicle is started and unlocked without contact. During this process, the UWB chip is used to measure distance and identify the user entering the vehicle. Then, the vehicle's main system controls the vehicle system to power on. With the Bluetooth module already pre-connected, Bluetooth audio and telephone functions are ready, enabling the mobile phone to reconnect to the vehicle's main system via Bluetooth. Step S4, Off-vehicle intelligent management stage: The UWB chip continuously tracks the location of the mobile phone. When it detects that the mobile phone has moved from inside the vehicle to outside the vehicle and the distance is increasing, the system determines that the user has left the vehicle. Then the vehicle's main system starts the preset automatic operation of raising the windows, locking the car, disconnecting Bluetooth, and putting the whole vehicle system into sleep mode.

7. The Bluetooth reconnection optimization method based on UWB according to claim 6, characterized in that, include: During the vehicle's external detection of mobile devices and the location phase, the UWB chip's low-power monitoring mode is triggered periodically. The complete UWB communication process is initiated only when an authorized mobile device's UWB signal is detected. This includes triangulation using multiple UWB anchor points to achieve distance measurement and orientation determination; at the same time, two-way encrypted authentication based on public-key cryptography is initiated.

8. The Bluetooth reconnection optimization method based on UWB according to claim 6, characterized in that, include: During the off-vehicle intelligent management phase, the trigger condition for the vehicle's main system to determine when a user leaves the vehicle is: the mobile phone is detected to be outside the vehicle for a continuous preset period of time, and the distance between the mobile phone and the vehicle increases by no less than a preset minimum distance per second.

9. An electronic device, characterized in that, include: The processor, communication interface, memory, and communication bus are connected, with the processor, communication interface, and memory communicating with each other via the communication bus. The memory stores a computer program that, when executed by a processor, causes the processor to perform the steps of the UWB-based Bluetooth backlink optimization method as described in any one of claims 6 to 8.

10. A computer-readable storage medium, characterized in that, The device stores a computer program executable by an electronic device, which, when run on the electronic device, causes the electronic device to perform the steps of the UWB-based Bluetooth backlink optimization method as described in any one of claims 6 to 8.

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