Vehicle-mounted mobile communication method, device, equipment, vehicle, medium and program product

Abstract

The invention provides a vehicle-mounted mobile communication method, device and equipment, a vehicle, a medium and a program product, and belongs to the technical field of vehicles, and the method comprises the steps: obtaining a communication signal quality parameter of an initial default antenna of the vehicle; the initial default antenna is used for being connected with a remote information processor of a vehicle for vehicle-mounted mobile communication, the initial default antenna is at least one of multiple antennas of the vehicle, and the multiple antennas further comprise a standby antenna; under the condition that the communication signal quality parameter is lower than the signal quality parameter threshold value, detecting the communication signal quality of the standby antenna according to a preset scanning sequence to obtain a detection result; determining a first target antenna from the standby antennas based on the detection result; and switching the connection between the remote information processor and the initial default antenna to the connection between the remote information processor and the first target antenna so as to carry out vehicle-mounted mobile communication based on the first target antenna. According to the invention, the communication reliability of the vehicle in the moving process can be ensured.

Description

Technical Field

[0001] This application relates to the field of vehicle technology. In particular, it relates to a vehicle-mounted mobile communication method, apparatus, equipment, vehicle, medium, and software product. Background Technology

[0002] In-vehicle mobile communication is a key technology for vehicles to achieve intelligent connectivity.

[0003] In related technologies, the mainstream solution for vehicle-mounted mobile communication is to install a single fixed antenna on the roof of the vehicle and connect it to the telematics box (T-Box) inside the vehicle through a set of radio frequency cables. The T-Box then interacts with the cloud via a cellular network.

[0004] However, due to the complex and ever-changing driving environment, when a vehicle enters an underground parking garage, passes through a tunnel, or is located in a "city valley" area with high-rise buildings, causing a single fixed antenna to be blocked, the network signal is very likely to be drastically attenuated or completely interrupted. This can cause navigation delays, audio-visual entertainment stutters, and even failure of the emergency call (eCall) function, thus seriously affecting communication reliability and user experience. Summary of the Invention

[0005] This application provides a vehicle-mounted mobile communication method, apparatus, device, vehicle, medium, and program product, which aims to ensure the communication reliability of the vehicle during movement and avoid signal loss that would cause interruption or failure of services such as online entertainment and emergency calls.

[0006] To achieve the above objectives, a first aspect of this application provides a vehicle-mounted mobile communication method, the method comprising: Obtain the communication signal quality parameters of the vehicle's initial default antenna; the initial default antenna is used to connect with the vehicle's telematics processor for in-vehicle mobile communication, and the initial default antenna is at least one of the vehicle's multiple antennas, which also include a spare antenna; When the communication signal quality parameter is lower than the signal quality parameter threshold, the communication signal quality of the backup antenna is detected according to a preset scanning order to obtain the detection result; Based on the detection results, a first target antenna is determined from the backup antennas; the communication signal quality of the first target antenna is higher than the communication signal quality of the other backup antennas besides the first target antenna. The remote information processor is switched from the initial default antenna connection to the connection with the first target antenna to perform vehicle-mounted mobile communication based on the first target antenna.

[0007] In some embodiments, the plurality of antennas are respectively connected to the input terminal of a multi-port RF switch, the output terminal of the multi-port RF switch is connected to the remote information processor, and the multi-port RF switch controls the initial default antenna to establish a stable connection with the remote information processor; The process of obtaining detection results by detecting the communication signal quality of the backup antenna according to a preset scanning sequence includes: The multi-port RF switch controls the initial default antenna to disconnect from the remote information processor, and controls the backup antenna to temporarily connect to the remote information processor in turn according to a preset scanning order; When the backup antenna is temporarily connected to the remote information processor, the communication signal quality of the backup antenna is detected in real time based on the signal strength detection circuit in the remote information processor to obtain the detection result.

[0008] In some embodiments, switching the connection of the remote information processor from the initial default antenna to the first target antenna includes: The first target antenna is stably connected to the remote information processor based on the multi-port radio frequency switch.

[0009] In some embodiments, the communication signal quality parameter is a first signal strength indication value of the initial default antenna, and the detection result is a second signal strength indication value of the backup antenna; The method further includes: The second target antenna is determined based on the first signal strength indication value and the second signal strength indication value; the signal strength indication value of the second target antenna is higher than the signal strength indication values ​​of the antennas other than the second target antenna among the plurality of antennas; When the second target antenna is the initial default antenna, the remote information processor remains connected to the initial default antenna; When the second target antenna is the backup antenna, the connection between the remote information processor and the initial default antenna is switched to the connection with the backup antenna.

[0010] In some embodiments, the method further includes: When the communication signal quality parameters of the third target antenna are lower than the signal quality parameter threshold, the physical orientation of the third target antenna is dynamically adjusted and / or the phase array is controlled to enhance the communication signal quality of the third target antenna; the third target antenna includes the initial default antenna and the first target antenna.

[0011] In some embodiments, the dynamic adjustment of the physical orientation of the third target antenna includes: The direction control motor that drives the third target antenna dynamically adjusts the physical orientation of the third target antenna.

[0012] In some embodiments, the method further includes: Obtain real-time environmental perception information of the vehicle; The real-time environmental perception information is input into a preset dynamic signal attenuation prediction model to perform communication signal quality prediction processing, and the signal quality parameter threshold output by the dynamic signal attenuation prediction model is obtained. The dynamic signal attenuation prediction model is obtained by training the initial signal quality prediction model based on the vehicle's environmental perception sample data and communication signal quality sample data.

[0013] Furthermore, to achieve the above objectives, a second aspect of this application provides a vehicle-mounted mobile communication device, the device comprising: The acquisition module is used to acquire the communication signal quality parameters of the vehicle's initial default antenna; the initial default antenna is used to connect with the vehicle's telematics processor for in-vehicle mobile communication, and the initial default antenna is at least one of the vehicle's multiple antennas, which also include a spare antenna. The detection module is used to detect the communication signal quality of the backup antenna according to a preset scanning order and obtain the detection result when the communication signal quality parameter is lower than the signal quality parameter threshold. A quality comparison module is used to determine a first target antenna from the backup antennas based on the detection results; the communication signal quality of the first target antenna is higher than the communication signal quality of the other antennas in the backup antennas besides the first target antenna. An antenna switching module is used to switch the connection between the remote information processor and the initial default antenna to the connection with the first target antenna, so as to perform vehicle-mounted mobile communication based on the first target antenna.

[0014] Furthermore, to achieve the above objectives, a third aspect of the present application provides a computer device, which includes 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. Memory, used to store computer programs; When the processor executes the program stored in the memory, it implements the steps of the vehicle-mounted mobile communication method described in the first aspect above.

[0015] To achieve the above objectives, a fourth aspect of this application provides a vehicle, the vehicle including a computer device, wherein when the processor of the computer device executes a computer program, it implements the steps of the vehicle-mounted mobile communication method described in the first aspect.

[0016] To achieve the above objectives, a fifth aspect of the present application provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the vehicle-mounted mobile communication method described in the first aspect.

[0017] To achieve the above objectives, a sixth aspect of the present application provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the vehicle-mounted mobile communication method described in the first aspect.

[0018] The vehicle-mounted mobile communication method, apparatus, computer equipment, vehicle, computer-readable storage medium, and computer program product provided in this application embodiment obtain the communication signal quality parameters of an initial default antenna of a vehicle. The initial default antenna is used to connect to the vehicle's telematics processor for vehicle-mounted mobile communication. The initial default antenna is at least one of a plurality of antennas in the vehicle, including a spare antenna. When the communication signal quality parameters are lower than a signal quality parameter threshold, the communication signal quality of the spare antennas is detected according to a preset scanning order to obtain a detection result. Based on the detection result, a first target antenna is determined from the spare antennas. The communication signal quality of the first target antenna is higher than the communication signal quality of the other spare antennas. The connection between the telematics processor and the initial default antenna is switched to connection with the first target antenna to perform vehicle-mounted mobile communication based on the first target antenna.

[0019] Thus, in this embodiment, the remote information processor (T-Box) is connected to a preset initial default antenna. Subsequently, the communication signal quality parameters of the currently serving antenna are continuously monitored, and these parameters are compared with preset signal quality parameter thresholds. If the communication signal quality parameter is lower than the threshold, an intelligent handover process is immediately triggered: the communication signal quality of backup antennas is detected in turn according to a preset scanning order. The detection results are compared to determine the first target antenna with the highest communication signal quality among the backup antennas. Then, the T-Box is stably connected to the first target antenna to complete a handover. In this way, based on a continuous monitoring-judgment-execution loop, it can be ensured that the vehicle's mobile communication always maintains a connection with the cellular network through the optimal path, thereby ensuring the reliability of vehicle communication during movement and preventing signal loss that could lead to interruption or failure of services such as online entertainment and emergency calls. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 The following are schematic flowcharts illustrating the steps of the vehicle-mounted mobile communication method provided in some embodiments of this application; Figure 2 for Figure 1 A detailed flowchart of step S102; Figure 3 A schematic diagram illustrating the working principle of an in-vehicle intelligent multi-antenna switching system involved in some embodiments of the in-vehicle mobile communication method provided in the embodiments of this application; Figure 4 A flowchart illustrating the steps of the vehicle-mounted mobile communication method provided in this application in other embodiments; Figure 5 A flowchart illustrating the steps of the vehicle-mounted mobile communication method provided in some other embodiments of this application; Figure 6 A flowchart illustrating the steps of the vehicle-mounted mobile communication method provided in some other embodiments of this application; Figure 7 This is a schematic diagram of the structure of the vehicle-mounted mobile communication device provided in the embodiments of this application; Figure 8 This is a schematic diagram of the hardware structure of a computer device provided in an embodiment of this application. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0023] It should be noted that although functional modules are divided in the device schematic diagram and a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the device or the order in the flowchart. The terms "first," "second," etc., in the specification, claims, and the aforementioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0025] First, the overall concept of the embodiments of this application will be explained.

[0026] In-vehicle mobile communication is a key technology for intelligent connected vehicles. Currently, the mainstream solution involves installing a single fixed antenna on the roof, connected to a telematics processor (T-Box) inside the vehicle via a radio frequency cable. The T-Box then interacts with the cloud via a cellular network (4G / 5G). However, this solution has significant drawbacks: due to the complex and varied driving environment, when entering underground parking garages, passing through tunnels, or in densely populated urban areas, a single antenna can easily experience drastic signal attenuation or complete signal loss if it is blocked. This can cause navigation delays, audio-visual entertainment system stuttering, and even failure of the emergency call (eCall) function, severely impacting communication reliability and user experience.

[0027] To address this issue, this application provides a vehicle-mounted mobile communication method, apparatus, computer equipment, vehicle, computer-readable storage medium, and computer program product. It aims to solve the core problem of signal attenuation or interruption in complex environments caused by the reliance on a single antenna in existing vehicle-mounted communication systems. Specifically, this application directly overcomes signal instability caused by environmental obstruction by deploying a multi-antenna array and an intelligent switching algorithm, ensuring that the vehicle can always capture and lock onto the communication link with the strongest available signal strength while in motion. The resulting benefits are significant and direct: First, communication reliability is fundamentally improved, and the continuity and stability of services such as navigation, online entertainment, and emergency calls are greatly enhanced, avoiding functional interruptions due to signal loss. Second, the system response speed is faster; the intelligent switching mechanism automatically completes signal optimization within milliseconds, and the user cannot perceive the switching process, achieving a seamless communication experience. Finally, this solution is easy to implement and cost-effective, requiring no modification to existing cellular network infrastructure. By simply optimizing the antenna layout and control logic on the vehicle side, a significant improvement in communication quality is achieved at a low cost, greatly enhancing the product's market competitiveness.

[0028] In this embodiment, to ensure the reliability of vehicle communication during movement and avoid signal loss leading to interruption / failure of online entertainment and emergency call services, this embodiment obtains the communication signal quality parameters of the vehicle's initial default antenna. The initial default antenna is used to connect to the vehicle's telematics processor for in-vehicle mobile communication. The initial default antenna is at least one of multiple antennas in the vehicle, including a backup antenna. When the communication signal quality parameters are lower than a signal quality parameter threshold, the communication signal quality of the backup antennas is detected according to a preset scanning order to obtain detection results. Based on the detection results, a first target antenna is determined from the backup antennas. The communication signal quality of the first target antenna is higher than the communication signal quality of the backup antennas other than the first target antenna. The connection between the telematics processor and the initial default antenna is switched to the connection with the first target antenna to perform in-vehicle mobile communication based on the first target antenna.

[0029] Thus, in this embodiment, the remote information processor (T-Box) is connected to a preset initial default antenna. Subsequently, the communication signal quality parameters of the currently serving antenna are continuously monitored, and these parameters are compared with preset signal quality parameter thresholds. If the communication signal quality parameter is lower than the threshold, an intelligent handover process is immediately triggered: the communication signal quality of backup antennas is detected in turn according to a preset scanning order. The detection results are compared to determine the first target antenna with the highest communication signal quality among the backup antennas. Then, the T-Box is stably connected to the first target antenna to complete a handover. In this way, based on a continuous monitoring-judgment-execution loop, it can be ensured that the vehicle's mobile communication always maintains a connection with the cellular network through the optimal path, thereby ensuring the reliability of vehicle communication during movement and preventing signal loss that could lead to interruption or failure of services such as online entertainment and emergency calls.

[0030] Based on the overall concept of the embodiments of this application described above, further specific embodiments of the vehicle-mounted mobile communication method, apparatus, computer equipment, vehicle, computer-readable storage medium, and computer program product provided in the embodiments of this application are proposed. First, the specific embodiments of the vehicle-mounted mobile communication method provided in the embodiments of this application are described.

[0031] It should be noted that the vehicle-mounted mobile communication method provided in this application embodiment can be applied to terminal devices configured in vehicles. It should also be understood that the vehicle-mounted mobile communication method provided in this application embodiment can also be applied to servers communicating with vehicles. Alternatively, the vehicle-mounted mobile communication method provided in this application embodiment can also be software running on the aforementioned terminal devices or servers. In some embodiments, the terminal device can be a smartphone, tablet computer, laptop computer, desktop computer, etc.; the server can be configured as an independent physical server, or as a server cluster or distributed system composed of multiple physical servers, or as a cloud server providing basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communication, middleware services, domain name services, security services, content delivery networks (CDN), and big data and artificial intelligence platforms; the software can be an application implementing the vehicle-mounted mobile communication method, etc., but is not limited to the above forms.

[0032] Alternatively, this application can also be used in numerous general-purpose or special-purpose computer system environments or configurations that connect to vehicles for policy control of vehicle driving. For example, these computer system environments or configurations can be personal computers, server computers, handheld or portable devices, tablet devices, multiprocessor systems, microprocessor-based systems, set-top boxes, programmable consumer computer devices, network PCs, minicomputers, mainframe computers, distributed computing environments including any of the above systems or devices, etc. This application can be described in the general context of computer-executable instructions executed by a computer, such as program modules. Generally, program modules include routines, programs, objects, components, data structures, etc., that perform specific tasks or implement specific abstract data types.

[0033] For ease of understanding and explanation, the following text will use the vehicle-mounted communication system configured on a vehicle as an example to illustrate the vehicle-mounted mobile communication method provided in the embodiments of this application. The implementation of any other subject matter using the vehicle-mounted mobile communication method provided in the embodiments of this application can refer to the process of applying the vehicle-mounted mobile communication method to a vehicle-mounted communication system described below.

[0034] It should be noted that in the description of some embodiments, the in-vehicle communication system may be referred to as a vehicle communication system, or simply as the system.

[0035] Please refer to Figure 1 , Figure 1 The flowchart illustrates the steps of the vehicle-mounted mobile communication method provided in some embodiments of this application. It should be understood that, although... Figure 1The figures show the execution order of some method steps, but based on different design needs of practical applications, the vehicle-mounted mobile communication method provided in this application embodiment can of course adopt a different execution order of method steps than that shown in the figures. That is, Figure 1 The order of the method steps shown does not constitute a limitation on the execution logic order of the vehicle-mounted mobile communication method provided in the embodiments of this application. Any other order based on... Figure 1 Reasonable changes to the sequence of steps shown should be included within the protection scope of the vehicle-mounted mobile communication method provided in the embodiments of this application.

[0036] like Figure 1 As shown, in some embodiments, the vehicle-mounted mobile communication method provided in this application may include steps S101 to S104.

[0037] Step S101: Obtain the communication signal quality parameters of the vehicle's initial default antenna; the initial default antenna is used to connect with the vehicle's telematics processor for in-vehicle mobile communication, and the initial default antenna is at least one of the vehicle's multiple antennas, which also include a spare antenna.

[0038] It should be noted that the communication signal quality parameter can be the received signal strength indication (RSSI) value of the antenna, or it can be a parameter such as signal-to-noise ratio or bit error rate. The vehicle-mounted mobile communication method provided in this application does not limit the specific type or value of the communication signal quality parameter.

[0039] Furthermore, the vehicle's multiple antennas can be multiple distributed antenna elements, such as 4G / 5G antennas located in the windshield, roof, rear windshield, and rear spoiler. The vehicle-mounted mobile communication method provided in this application does not limit the type of antenna or its specific distribution location on the vehicle.

[0040] After the vehicle communication system is initialized, it controls the remote information processor T-Box to connect to a preset initial default antenna, and then continuously monitors the communication signal quality parameters of the currently serving antenna. The currently serving antenna is the initial default antenna.

[0041] Step S102: When the communication signal quality parameter is lower than the signal quality parameter threshold, the communication signal quality of the backup antenna is detected according to a preset scanning sequence to obtain the detection result.

[0042] It should be noted that the signal quality parameter threshold is a preset RSSI reliability threshold (e.g., -95dBm). Furthermore, when the communication signal quality parameters are other parameters such as the aforementioned signal-to-noise ratio and bit error rate, the signal quality parameter threshold corresponds to other types of reliability thresholds. The vehicle-mounted mobile communication method provided in this application does not limit the specific type or value of the signal quality parameter threshold.

[0043] After acquiring the communication signal quality parameters of the initial default antenna currently providing service, the vehicle-mounted communication system compares these parameters with a preset signal quality parameter threshold to determine their relative magnitude. If the system determines that the communication signal quality parameter is lower than the threshold, it immediately triggers an intelligent handover process. In this process, the system first sequentially checks the communication signal quality of the backup antennas according to a preset scanning order, obtaining the corresponding detection results.

[0044] In some embodiments, if the vehicle communication system determines that the communication signal quality parameter is higher than the signal quality parameter threshold, it determines that the signal quality of the current serving antenna is good, and thus returns to the monitoring state: obtain the new communication signal quality parameter of the initial default antenna and compare it with the signal quality parameter threshold.

[0045] Step S103: Based on the detection result, determine the first target antenna from the backup antennas; the communication signal quality of the first target antenna is higher than the communication signal quality of the other antennas in the backup antennas besides the first target antenna.

[0046] After triggering the intelligent switching process and detecting the communication signal quality of the backup antenna, the vehicle communication system compares the communication signal quality based on the detection results to determine the first target antenna with the highest communication signal quality among the backup antennas.

[0047] For example, the detection result of the backup antenna can be the Received Signal Strength Indication (RSSI) value of each of the multiple backup antennas. In this case, the vehicle communication system compares the multiple RSSI values ​​to select the largest target RSSI value, and uses the backup antenna corresponding to the target RSSI value as the first target antenna with the highest communication signal quality among the backup antennas.

[0048] Step S104: Switch the connection of the remote information processor from the initial default antenna to the first target antenna to perform vehicle-mounted mobile communication based on the first target antenna.

[0049] In the intelligent handover process, after identifying the first target antenna with the highest communication signal quality among the backup antennas, the vehicle communication system immediately switches the stable connection between the remote information processor and the initial default antenna to a stable connection between the remote information processor and the first target antenna to complete the handover. Subsequently, vehicle mobile communication is based on the first target antenna as the current serving antenna.

[0050] In this embodiment, the remote information processor (T-Box) is connected to a preset initial default antenna. The communication signal quality parameters of the currently serving antenna are continuously monitored, and these parameters are compared with a preset signal quality threshold. If the communication signal quality parameter is lower than the threshold, an intelligent handover process is immediately triggered: the communication signal quality of backup antennas is detected in turn according to a preset scanning order. The results are compared to determine the first target antenna with the highest communication signal quality among the backup antennas. The T-Box is then stably connected to the first target antenna to complete a handover. This continuous monitoring-judgment-execution loop ensures that the vehicle's mobile communication always maintains a connection with the cellular network via the optimal path, thereby ensuring the reliability of vehicle communication during movement and preventing signal loss that could lead to interruptions or failures of services such as online entertainment and emergency calls.

[0051] In some embodiments, the plurality of antennas are respectively connected to the input terminal of a multi-port RF switch, the output terminal of the multi-port RF switch is connected to the remote information processor, and the multi-port RF switch controls the initial default antenna to establish a stable connection with the remote information processor.

[0052] The vehicle communication system can be a vehicle-mounted intelligent multi-antenna switching system. Its core lies in the collaborative operation of a distributed antenna layout and a central control unit to dynamically select the optimal signal path. The system hardware mainly includes multiple distributed antenna units, a multi-port RF switch, a signal strength detection circuit integrated within a T-Box, and a central processing unit (CPU). Multiple antenna units (such as 4G / 5G antennas located in the windshield, roof, rear windshield, and rear spoiler) are connected to the input of the RF switch via coaxial cables. The output of this switch is connected to the RF input of the single T-Box within the vehicle. The control terminal of the RF switch and the data output terminal of the T-Box are connected to the CPU, enabling the CPU to acquire real-time signal strength and send switching commands, thus forming a complete closed-loop control system.

[0053] Please refer to Figure 2 , Figure 2 for Figure 1 A detailed flowchart of step S102.

[0054] like Figure 2 As shown, in some embodiments, the step of "detecting the communication signal quality of the backup antenna according to a preset scanning order to obtain the detection result" in step S102 above may include steps S201 and S202 as shown below.

[0055] Step S201: Based on the multi-port RF switch, control the initial default antenna to disconnect from the remote information processor, and control the backup antenna to temporarily connect to the remote information processor in turn according to the preset scanning order.

[0056] After triggering the intelligent switching process, the vehicle communication system first sends a control command to the multi-port RF switch via the central processing unit. In response to this command, the multi-port RF switch first disconnects the initial default antenna from the remote information processor (RAP). Then, it sequentially connects each backup antenna to the RAP in a preset scanning order. For example, the multi-port RF switch first briefly connects backup antenna 1 on the windshield to the T-Box, then briefly connects backup antenna 1 on the roof to the T-Box, then briefly connects backup antenna 3 on the rear windshield to the T-Box, and finally briefly connects backup antenna 4 in the rear spoiler to the T-Box.

[0057] Step S202: When the backup antenna is temporarily connected to the remote information processor, the communication signal quality of the backup antenna is detected in real time based on the signal strength detection circuit in the remote information processor to obtain the detection result.

[0058] In the intelligent switching process of the vehicle communication system, when the central processing unit controls the multi-port RF switch to temporarily connect the backup antenna to the remote information processor in turn, the signal strength detection circuit in the remote information processor detects the communication signal quality of the connected backup antenna in real time each time a backup antenna is connected, and obtains the corresponding detection result.

[0059] In some embodiments, step S103 above, "switching the connection of the remote information processor with the initial default antenna to the connection with the first target antenna," may include the following steps: The first target antenna is stably connected to the remote information processor based on the multi-port radio frequency switch.

[0060] In the intelligent switching process, the vehicle communication system determines the first target antenna with the highest communication signal quality based on the monitoring of the communication signal quality of the backup antenna. Then, the central processing unit sends a control command to the multi-port RF switch, which responds to the control command to maintain a stable connection between the first target antenna and the remote information processor.

[0061] For example, such as Figure 3 As shown, after the vehicle-mounted intelligent multi-antenna switching system is initialized, the CPU controls the RF switch to connect to a preset antenna (such as the roof antenna) by default. Subsequently, the signal strength detection circuit continuously monitors the Received Signal Strength Indication (RSSI) value of the currently serving antenna and reports the data to the CPU in real time. The CPU compares the acquired RSSI value with a preset reliability threshold (e.g., -95dBm): if the current value is higher than the threshold, the signal quality is considered good, and the system returns to the monitoring state; if the current value is lower than the threshold, the intelligent switching process is immediately triggered. At this time, the CPU controls the RF switch to briefly connect each backup antenna to the T-Box in a predetermined order, and the signal strength detection circuit quickly measures its RSSI value. After comparing the measurement results of all available antennas, the CPU finally controls the RF switch to stably connect to the antenna with the highest RSSI value, completing one switching operation, thereby ensuring that the vehicle communication system always maintains a connection with the cellular network through the optimal path.

[0062] In this embodiment, after the vehicle-mounted communication system triggers the intelligent handover process, it first sends a control command to the multi-port RF switch via the central processing unit. The multi-port RF switch, in response to this command, first disconnects the initial default antenna from the remote information processor (RAS). Then, it sequentially connects each backup antenna to the RAS in a preset scanning order. While the central processing unit controls the multi-port RF switch to connect the backup antennas to the RAS, the signal strength detection circuit in the RAS detects the communication signal quality of each connected backup antenna in real time and obtains the corresponding detection result. Furthermore, after determining the first target antenna with the highest communication signal quality based on the monitored backup antennas, the central processing unit sends a further control command to the multi-port RF switch. The multi-port RF switch, in response to this command, maintains a stable connection between the first target antenna and the RAS.

[0063] Thus, leveraging the spatial diversity advantages of multiple antennas in the hardware and the rapid response of the control logic (the distributed layout ensures that at least one antenna can avoid signal obstruction, while the automatic switching mechanism can activate the optimal backup link the instant signal degradation is detected (within milliseconds)), a fundamental improvement in communication reliability is achieved, thereby completely avoiding problems such as navigation interruptions and dropped calls. Furthermore, thanks to the fact that the entire switching process is automatically completed by the system in the background without user intervention, a seamless user experience is achieved, and the switching algorithm is highly efficient and completely transparent to upper-layer applications. In addition, because this embodiment focuses on utilizing mature antenna components and adding a radio frequency switch, optimizing the system architecture and control logic rather than relying on expensive infrastructure upgrades, the solution is low-cost and highly feasible, thus achieving a significant enhancement in in-vehicle communication performance and possessing significant commercial promotion value.

[0064] In some embodiments, the communication signal quality parameter is a first signal strength indication value of the initial default antenna, and the detection result is a second signal strength indication value of the backup antenna.

[0065] Please refer to Figure 4 , Figure 4 The following are schematic flowcharts illustrating the steps of the vehicle-mounted mobile communication method provided in this application in other embodiments.

[0066] like Figure 4 As shown, in some embodiments, the vehicle-mounted mobile communication method provided in this application may further include steps S401 to S403 as shown below.

[0067] Step S401: Determine a second target antenna based on the first signal strength indication value and the second signal strength indication value; the signal strength indication value of the second target antenna is higher than the signal strength indication values ​​of the antennas other than the second target antenna among the plurality of antennas.

[0068] After the vehicle communication system detects that the first signal strength indication value of the initial default antenna is lower than the signal quality parameter threshold and triggers the intelligent handover process, it can also compare the first signal strength indication value with multiple second signal strength indication values. In this way, it can determine the second target antenna with the highest communication signal quality among all the antennas, including the initial default antenna and the backup antenna. That is, the signal strength indication value of the second target antenna is higher than the signal strength indication value of any other antenna among the multiple antennas except the second target antenna.

[0069] Step S402: If the second target antenna is the initial default antenna, maintain the connection between the remote information processor and the initial default antenna.

[0070] After the vehicle communication system identifies the second target antenna with the highest communication signal quality, if the second target antenna is still the initial default antenna, the vehicle communication system controls the multi-port radio frequency switch to maintain a stable connection between the telematics processor and the initial default antenna, thereby continuing to provide vehicle communication services based on the initial default antenna.

[0071] Step S403: When the second target antenna is the backup antenna, switch the connection of the remote information processor from the initial default antenna to the backup antenna.

[0072] After the vehicle communication system identifies the second target antenna with the highest communication signal quality, if the second target antenna is one of the backup antennas, the vehicle communication system further issues a control command to the multi-port RF switch through the central processing unit. The multi-port RF switch responds to the control command to maintain a stable connection between the target antenna and the remote information processor, thereby switching to vehicle communication service based on the target antenna.

[0073] In this embodiment, considering that the communication signal quality of the backup antenna may also be lower than the signal quality parameter threshold, the vehicle communication system compares the communication signal quality of all multiple antennas to select the second target antenna with the highest communication signal quality, which then establishes a stable connection with the remote information processor for vehicle communication services. This further ensures that vehicle mobile communication always maintains a connection with the cellular network via the optimal path.

[0074] Please refer to Figure 5 , Figure 5 A flowchart illustrating the steps of the vehicle-mounted mobile communication method provided in some other embodiments of this application.

[0075] like Figure 5 As shown, in some embodiments, the vehicle-mounted mobile communication method provided in this application may further include the following step S501.

[0076] Step S501: When the communication signal quality parameter of the third target antenna is lower than the signal quality parameter threshold, the physical orientation of the third target antenna is dynamically adjusted and / or the phase array is controlled to enhance the communication signal quality of the third target antenna; the third target antenna includes the initial default antenna and the first target antenna.

[0077] Whether the vehicular communication system establishes vehicular mobile communication based on the initial default antenna and the remote information processor before triggering the intelligent handover process, or establishes vehicular mobile communication based on the first target antenna among the backup antennas and the remote information processor after triggering the intelligent handover process, it can enhance the communication signal quality of the third target antenna currently providing communication services based on a signal enhancement mode. Specifically, if the communication signal quality parameters of the third target antenna are detected to be below a signal quality parameter threshold, the physical orientation of the third target antenna is dynamically adjusted to enhance its communication signal quality; or, if the communication signal quality parameters of the third target antenna are below a signal quality parameter threshold, phase array modulation is performed on the third target antenna to enhance its communication signal quality; or, if the communication signal quality parameters of the third target antenna are below a signal quality parameter threshold, both dynamic physical orientation adjustment and phase array modulation are performed simultaneously to enhance its communication signal quality.

[0078] In some embodiments, the step of "dynamically adjusting the physical orientation of the third target antenna" in step S501 described above may include the following steps: The direction control motor that drives the third target antenna dynamically adjusts the physical orientation of the third target antenna.

[0079] When the vehicle-mounted communication system dynamically adjusts the physical orientation of the third target antenna to enhance its communication signal quality, it can do so by driving the direction control motor of the third target antenna to dynamically adjust the physical orientation of the third target antenna.

[0080] In some embodiments, the vehicle-mounted communication system can be a vehicle-mounted intelligent communication antenna system, including a multi-band antenna array, a signal processing module, a directional control motor, and a vehicle-mounted main control unit. The system receives communication signals in real time through a third target antenna. The signal processing module analyzes the intensity and signal-to-noise ratio to obtain communication signal quality parameters. If the communication signal quality parameters are lower than the signal quality parameter threshold, an enhancement mode is activated. That is, the physical orientation of the third target antenna is dynamically adjusted by the directional control motor, and beamforming is performed by phase modulation of the third target antenna, thereby enhancing the communication signal quality of the third target antenna.

[0081] In some embodiments, when the vehicle-mounted intelligent communication antenna system performs dynamic physical orientation adjustment and / or phase array control on the third target antenna to enhance its communication signal quality, it can also simultaneously obtain the driving status (such as vehicle speed, heading, etc.) and geographical location through the main control unit in conjunction with the vehicle navigation system, and predict weak signal areas based on the driving status and geographical location to trigger gain adjustment in advance.

[0082] In this embodiment, when the vehicle-mounted communication system detects that the communication signal quality parameters of the third target antenna are below a signal quality parameter threshold, it dynamically adjusts the physical orientation of the third target antenna to enhance its communication signal quality; alternatively, when the communication signal quality parameters of the third target antenna are below the signal quality parameter threshold, it performs phase array modulation on the third target antenna to enhance its communication signal quality; or, when the communication signal quality parameters of the third target antenna are below the signal quality parameter threshold, it simultaneously performs dynamic physical orientation adjustment and phase array modulation on the third target antenna to enhance its communication signal quality. This solves the problems of lag and poor scene adaptability of traditional antennas. Tests show that the technical solution provided in this embodiment can significantly improve the signal reception stability of vehicles in tunnels and remote road sections.

[0083] Furthermore, this embodiment enhances the communication signal quality of the third target antenna by dynamically adjusting its physical orientation and controlling its phase array through the vehicle-mounted communication system. It realizes a hardware-software collaborative architecture that layers and couples mechanical direction control (motor-driven antenna physical deflection) with electronic beamforming technology (phase array control), thereby balancing the requirements of strong far-field directivity and near-field anti-interference in vehicle-mounted communication.

[0084] Please refer to Figure 6 , Figure 6 A flowchart illustrating the steps of the vehicle-mounted mobile communication method provided in some other embodiments of this application.

[0085] like Figure 6 As shown, in some embodiments, the vehicle-mounted mobile communication method provided in this application may further include steps S601 and S602 as shown below.

[0086] Step S601: Obtain real-time environmental perception information of the vehicle.

[0087] It should be noted that the vehicle's real-time environmental perception information can be the driving status and geographical location mentioned above. It should be understood that, based on different design needs in practical applications, other modalities of environmental perception information can certainly be acquired in different feasible implementations. The vehicle-mounted mobile communication method provided in this application embodiment does not limit the specific type of real-time environmental perception information.

[0088] When the vehicular communication system enhances the communication signal quality of the third target antenna currently providing communication services based on the signal enhancement mode, it can also acquire real-time environmental perception information of the vehicle. For example, it can obtain driving status (such as vehicle speed, heading, etc.) and geographical location through the linkage between the main control unit and the vehicular navigation system.

[0089] Step S602: Input the real-time environmental perception information into a preset dynamic signal attenuation prediction model for communication signal quality prediction processing to obtain the signal quality parameter threshold output by the dynamic signal attenuation prediction model; the dynamic signal attenuation prediction model is obtained by training an initial signal quality prediction model based on the vehicle's environmental perception sample data and communication signal quality sample data.

[0090] It should be noted that the dynamic signal attenuation prediction model can be a machine learning model that has been trained to predict dynamic signal attenuation (such as SNR attenuation) based on vehicle navigation data (such as geographical location, vehicle speed, and heading).

[0091] After acquiring real-time environmental perception information of the vehicle, the vehicular communication system further inputs this information into a pre-trained dynamic signal attenuation prediction model. This model then performs communication signal quality prediction processing on the real-time environmental perception information, obtaining a signal quality parameter threshold output by the model. This threshold can be used to compare with the communication signal quality parameters of a third target antenna to determine whether to enhance the communication signal quality of the third target antenna.

[0092] In some embodiments, the vehicular communication system can train an attenuation prediction model using historical signal data. That is, based on the vehicle's environmental perception sample data and communication signal quality sample data, an initial signal quality prediction model is trained to obtain a trained dynamic signal attenuation prediction model.

[0093] In some embodiments, the vehicle communication system can employ a multi-source information fusion decision-making mechanism to construct a dynamic signal attenuation prediction model by real-time interaction of vehicle navigation data (such as geographical location, vehicle speed, and heading) and communication signal quality parameters (such as signal-to-noise ratio and bit error rate), thereby enabling the predictive execution of antenna enhancement strategies.

[0094] For example, the vehicle communication system integrates vehicle speed, heading, and 5G / V2X communication signal quality parameters (SNR, BER, etc.), and stores them in a structured manner with a unified timestamp. Then, using a 5-second sliding window, it extracts three types of features: spatiotemporal dynamics, communication timing, and environmental interaction, and fuses them into a 14-dimensional temporal feature matrix. The model is then built using this temporal feature matrix. Specifically, a lightweight temporal Transformer network (such as Light-TFT) is trained on this temporal feature matrix, and quantization pruning is used to reduce inference latency, resulting in a dynamic signal attenuation prediction model that can predict dynamic signal attenuation (such as SNR attenuation) based on vehicle navigation data (such as geographical location, vehicle speed, and heading).

[0095] In this embodiment, a dynamic signal attenuation prediction model is constructed through the vehicle-mounted communication system to predict dynamic signal attenuation. This allows for the use of machine learning algorithms to replace fixed threshold strategies, enabling predictive execution of antenna enhancement strategies. Furthermore, this embodiment can dynamically adjust the signal trigger threshold based on real-time network standards (such as 5G NSA / SA modes) and terrain features (tunnels, hills), thus achieving environment-adaptive dynamic threshold management and avoiding redundant operations in antenna communication signal quality enhancement. This further addresses the issues of antenna response lag and poor scene adaptability.

[0096] Based on the same inventive concept, embodiments of this application also provide a vehicle-mounted mobile communication device for implementing the above-mentioned device.

[0097] The implementation scheme of the vehicle-mounted mobile communication device provided in this application is similar to the implementation scheme described in the various embodiments of the above-mentioned vehicle-mounted mobile communication method. Therefore, the specific limitations in one or more vehicle-mounted mobile communication device embodiments provided below can be found in the limitations of the vehicle-mounted mobile communication method above, and will not be repeated here.

[0098] In one embodiment, such as Figure 7 As shown, the vehicle-mounted mobile communication device provided in this application embodiment includes: an acquisition module 701, a detection module 702, a quality comparison module 703, and an antenna switching module 704, wherein: The acquisition module 701 is used to acquire the communication signal quality parameters of the vehicle's initial default antenna; the initial default antenna is used to connect with the vehicle's telematics processor for in-vehicle mobile communication, and the initial default antenna is at least one of the vehicle's multiple antennas, which also include a spare antenna. The detection module 702 is used to detect the communication signal quality of the backup antenna according to a preset scanning order to obtain the detection result when the communication signal quality parameter is lower than the signal quality parameter threshold. The quality comparison module 702 is used to determine a first target antenna from the backup antennas based on the detection result; the communication signal quality of the first target antenna is higher than the communication signal quality of the other antennas in the backup antennas excluding the first target antenna. Antenna switching module 704 is used to switch the connection between the remote information processor and the initial default antenna to the connection with the first target antenna, so as to perform vehicle mobile communication based on the first target antenna.

[0099] In some embodiments, the plurality of antennas are respectively connected to the input terminal of a multi-port RF switch, the output terminal of the multi-port RF switch is connected to the remote information processor, and the multi-port RF switch controls the initial default antenna to establish a stable connection with the remote information processor; The detection module 702 is also used to control the initial default antenna to disconnect from the remote information processor based on the multi-port RF switch, and to control the backup antenna to temporarily connect with the remote information processor in turn according to a preset scanning order; when the backup antenna is temporarily connected with the remote information processor, the communication signal quality of the backup antenna is detected in real time based on the signal strength detection circuit in the remote information processor to obtain the detection result.

[0100] In some embodiments, the antenna switching module 704 is further configured to control the first target antenna to establish a stable connection with the remote information processor based on the multi-port radio frequency switch.

[0101] In some embodiments, the communication signal quality parameter is a first signal strength indication value of the initial default antenna, and the detection result is a second signal strength indication value of the backup antenna; The quality comparison module 702 is further configured to determine a second target antenna based on the first signal strength indication value and the second signal strength indication value; the signal strength indication value of the second target antenna is higher than the signal strength indication values ​​of the antennas other than the second target antenna among the plurality of antennas; The antenna switching module 704 is further configured to maintain the connection between the remote information processor and the initial default antenna when the second target antenna is the initial default antenna; and to switch the connection between the remote information processor and the initial default antenna to the connection with the backup antenna when the second target antenna is the backup antenna.

[0102] In some embodiments, the vehicle-mounted mobile communication device provided in this application further includes: A signal enhancement module is used to dynamically adjust the physical orientation and / or control the phase array of the third target antenna when the communication signal quality parameters of the third target antenna are lower than the signal quality parameter threshold, so as to enhance the communication signal quality of the third target antenna; the third target antenna includes the initial default antenna and the first target antenna.

[0103] In some embodiments, the signal enhancement module is further configured to drive the direction control motor of the third target antenna to dynamically adjust the physical orientation of the third target antenna.

[0104] In some embodiments, the vehicle-mounted mobile communication device provided in this application further includes: The dynamic threshold management module is used to acquire real-time environmental perception information of the vehicle; and to input the real-time environmental perception information into a preset dynamic signal attenuation prediction model for communication signal quality prediction processing, so as to obtain the signal quality parameter threshold output by the dynamic signal attenuation prediction model. The dynamic signal attenuation prediction model is obtained by training the initial signal quality prediction model based on the vehicle's environmental perception sample data and communication signal quality sample data.

[0105] It should be noted that each module in the aforementioned vehicle-mounted mobile communication device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device, or stored in the memory of a computer device as software, so that the processor can call and execute the corresponding operations of each module.

[0106] Based on the same inventive concept, this application also provides a computer device, which can be a server, and its internal structure diagram can be as follows. Figure 8 As shown, this computer device includes a processor, memory, input / output (I / O) interfaces, and a communication interface. The processor, memory, and I / O interfaces are connected via a system bus, and the communication interface is also connected to the system bus via the I / O interfaces. The processor provides computational and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system, computer programs, and a database. The internal memory provides the environment for the operating system and computer programs stored in the non-volatile storage media. The database stores model parameters related to the liquid metal reactor. The I / O interfaces are used for exchanging information between the processor and external devices. The communication interface is used for communicating with external terminals via a network. When the computer program is executed by the processor, it implements a vehicle-mounted mobile communication method.

[0107] When the processor of the computer device provided in this application executes a computer program, it performs the following steps: Obtain the communication signal quality parameters of the vehicle's initial default antenna; the initial default antenna is used to connect with the vehicle's telematics processor for in-vehicle mobile communication, and the initial default antenna is at least one of the vehicle's multiple antennas, which also include a spare antenna; When the communication signal quality parameter is lower than the signal quality parameter threshold, the communication signal quality of the backup antenna is detected according to a preset scanning order to obtain the detection result; Based on the detection results, a first target antenna is determined from the backup antennas; the communication signal quality of the first target antenna is higher than the communication signal quality of the other backup antennas besides the first target antenna. The remote information processor is switched from the initial default antenna connection to the connection with the first target antenna to perform vehicle-mounted mobile communication based on the first target antenna.

[0108] In some embodiments, the plurality of antennas are respectively connected to the input terminal of a multi-port RF switch, the output terminal of the multi-port RF switch is connected to the remote information processor, and the multi-port RF switch controls the initial default antenna to establish a stable connection with the remote information processor; The process of obtaining detection results by detecting the communication signal quality of the backup antenna according to a preset scanning sequence includes: The multi-port RF switch controls the initial default antenna to disconnect from the remote information processor, and controls the backup antenna to temporarily connect to the remote information processor in turn according to a preset scanning order; When the backup antenna is temporarily connected to the remote information processor, the communication signal quality of the backup antenna is detected in real time based on the signal strength detection circuit in the remote information processor to obtain the detection result.

[0109] In some embodiments, switching the connection of the remote information processor from the initial default antenna to the first target antenna includes: The first target antenna is stably connected to the remote information processor based on the multi-port radio frequency switch.

[0110] In some embodiments, the communication signal quality parameter is a first signal strength indication value of the initial default antenna, and the detection result is a second signal strength indication value of the backup antenna; When a processor executes a computer program, it also performs the following steps: The second target antenna is determined based on the first signal strength indication value and the second signal strength indication value; the signal strength indication value of the second target antenna is higher than the signal strength indication values ​​of the antennas other than the second target antenna among the plurality of antennas; When the second target antenna is the initial default antenna, the remote information processor remains connected to the initial default antenna; When the second target antenna is the backup antenna, the connection between the remote information processor and the initial default antenna is switched to the connection with the backup antenna.

[0111] In some embodiments, when the processor executes a computer program, it further performs the following steps: When the communication signal quality parameters of the third target antenna are lower than the signal quality parameter threshold, the physical orientation of the third target antenna is dynamically adjusted and / or the phase array is controlled to enhance the communication signal quality of the third target antenna; the third target antenna includes the initial default antenna and the first target antenna.

[0112] In some embodiments, the dynamic adjustment of the physical orientation of the third target antenna includes: The direction control motor that drives the third target antenna dynamically adjusts the physical orientation of the third target antenna.

[0113] In some embodiments, when the processor executes a computer program, it further performs the following steps: Obtain real-time environmental perception information of the vehicle; The real-time environmental perception information is input into a preset dynamic signal attenuation prediction model to perform communication signal quality prediction processing, and the signal quality parameter threshold output by the dynamic signal attenuation prediction model is obtained. The dynamic signal attenuation prediction model is obtained by training the initial signal quality prediction model based on the vehicle's environmental perception sample data and communication signal quality sample data.

[0114] Those skilled in the art will understand that Figure 8 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0115] Based on the same inventive concept, this application also provides a vehicle equipped with a computer device. The steps implemented by the processor of the computer device when executing a computer program are the same as the steps implemented by the processor of the aforementioned computer device when executing a computer program. The same content will not be described again here.

[0116] Based on the same inventive concept, embodiments of this application also provide a computer-readable storage medium, including a computer program. When the computer program is executed by a processor, the steps implemented are the same as the steps implemented by the processor in the computer device described above when it executes the computer program. The same content will not be described again here.

[0117] Based on the same inventive concept, this application also provides a computer program product, including a computer program. When the computer program is executed by a processor, the steps implemented are the same as the steps implemented by the processor in the computer device when it executes the computer program. The same content will not be described again here.

[0118] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory may include read-only memory (Read-Only Memory). Memory includes ROM, magnetic tape, floppy disk, flash memory, optical storage, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory may include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc. The databases involved in the embodiments provided in this application may include at least one of relational databases and non-relational databases. Non-relational databases may include distributed databases based on blockchain, etc., and are not limited thereto. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited thereto.

[0119] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0120] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A vehicle-mounted mobile communication method, characterized in that, The method includes: Obtain the communication signal quality parameters of the vehicle's initial default antenna; the initial default antenna is used to connect with the vehicle's telematics processor for in-vehicle mobile communication, and the initial default antenna is at least one of the vehicle's multiple antennas, which also include a spare antenna; When the communication signal quality parameter is lower than the signal quality parameter threshold, the communication signal quality of the backup antenna is detected according to a preset scanning order to obtain the detection result; Based on the detection results, a first target antenna is determined from the backup antennas; the communication signal quality of the first target antenna is higher than the communication signal quality of the other backup antennas besides the first target antenna. The remote information processor is switched from the initial default antenna connection to the connection with the first target antenna to perform vehicle-mounted mobile communication based on the first target antenna.

2. The method according to claim 1, characterized in that, The plurality of antennas are respectively connected to the input terminal of the multi-port RF switch, the output terminal of the multi-port RF switch is connected to the remote information processor, and the multi-port RF switch controls the initial default antenna to establish a stable connection with the remote information processor; The process of obtaining detection results by detecting the communication signal quality of the backup antenna according to a preset scanning sequence includes: The multi-port RF switch controls the initial default antenna to disconnect from the remote information processor, and controls the backup antenna to temporarily connect to the remote information processor in turn according to a preset scanning order; When the backup antenna is temporarily connected to the remote information processor, the communication signal quality of the backup antenna is detected in real time based on the signal strength detection circuit in the remote information processor to obtain the detection result.

3. The method according to claim 2, characterized in that, The step of switching the connection of the remote information processor from the initial default antenna to the first target antenna includes: The first target antenna is stably connected to the remote information processor based on the multi-port radio frequency switch.

4. The method according to claim 1, characterized in that, The communication signal quality parameter is the first signal strength indication value of the initial default antenna, and the detection result is the second signal strength indication value of the backup antenna. The method further includes: The second target antenna is determined based on the first signal strength indication value and the second signal strength indication value; the signal strength indication value of the second target antenna is higher than the signal strength indication values ​​of the antennas other than the second target antenna among the plurality of antennas; When the second target antenna is the initial default antenna, the remote information processor remains connected to the initial default antenna; When the second target antenna is the backup antenna, the connection between the remote information processor and the initial default antenna is switched to the connection with the backup antenna.

5. The method according to claim 1, characterized in that, The method further includes: When the communication signal quality parameters of the third target antenna are lower than the signal quality parameter threshold, the physical orientation of the third target antenna is dynamically adjusted and / or the phase array is controlled to enhance the communication signal quality of the third target antenna; the third target antenna includes the initial default antenna and the first target antenna.

6. The method according to claim 5, characterized in that, The dynamic adjustment of the physical orientation of the third target antenna includes: The direction control motor that drives the third target antenna dynamically adjusts the physical orientation of the third target antenna.

7. The method according to any one of claims 1 to 6, characterized in that, The method further includes: Acquire real-time environmental perception information of the vehicle; The real-time environmental perception information is input into a preset dynamic signal attenuation prediction model to perform communication signal quality prediction processing, and the signal quality parameter threshold output by the dynamic signal attenuation prediction model is obtained. The dynamic signal attenuation prediction model is obtained by training the initial signal quality prediction model based on the vehicle's environmental perception sample data and communication signal quality sample data.

8. A vehicle-mounted mobile communication device, characterized in that, The device includes: The acquisition module is used to acquire the communication signal quality parameters of the vehicle's initial default antenna; the initial default antenna is used to connect with the vehicle's telematics processor for in-vehicle mobile communication, and the initial default antenna is at least one of the vehicle's multiple antennas, which also include a spare antenna. The detection module is used to detect the communication signal quality of the backup antenna according to a preset scanning order and obtain the detection result when the communication signal quality parameter is lower than the signal quality parameter threshold. A quality comparison module is used to determine a first target antenna from the backup antennas based on the detection results; the communication signal quality of the first target antenna is higher than the communication signal quality of the other antennas in the backup antennas besides the first target antenna. An antenna switching module is used to switch the connection between the remote information processor and the initial default antenna to the connection with the first target antenna, so as to perform vehicle-mounted mobile communication based on the first target antenna.

9. A computer device, characterized in that, The device includes 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; Memory, used to store computer programs; When a processor executes a program stored in memory, it implements the steps of the vehicle-mounted mobile communication method as described in any one of claims 1-7.

10. A vehicle, said vehicle including computer equipment, characterized in that, When the processor of the computer device executes a computer program, it implements the steps of the vehicle-mounted mobile communication method as described in any one of claims 1-7.

11. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the vehicle-mounted mobile communication method as described in any one of claims 1-7.

12. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the vehicle-mounted mobile communication method as described in any one of claims 1-7.

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