A system and method for netless queuing V2V interconnection

Abstract

The application discloses a system and method for V2V interconnection without network group queuing, which comprises a talkback module, an antenna and a vehicle machine arranged on each vehicle; a vehicle-mounted man-machine interaction module is connected to the vehicle machine to interact data; the vehicle machine is connected with the talkback module to realize data transceiving between the vehicle machine and the talkback module; the talkback module is connected to other vehicles in a group through the antenna to realize communication interaction. The application realizes communication interaction between vehicle groups without mobile network.

Description

Technical Field

[0001] This invention relates to the field of team communication, and in particular to a method and system for network-free team V2V interconnection. Background Technology

[0002] In special scenarios such as off-road driving, convoys are formed, and communication and interaction between vehicles within the convoy are crucial. Current technologies rely on cellular mobile networks (4G or 5G) for communication after convoy formation, using SIM cards for data communication and cloud servers for location data synchronization and voice transmission. However, off-road convoys are typically in the wilderness, where the absence of network or weak network conditions renders cellular mobile networks ineffective, hindering effective communication between convoys. In areas such as uninhabited regions, plateaus, deserts, or sparsely populated areas, cellular mobile network coverage is low, and communication capabilities are insufficient to meet the requirements of off-road convoys. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a method and system for network-free platooning V2V interconnection, which enables communication and interaction between platoons in the absence of a mobile network.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A network-free V2V interconnection system, the system including an intercom module, an antenna and a vehicle-mounted unit installed on each vehicle;

[0006] The vehicle-mounted human-machine interaction module is connected to the vehicle's infotainment system for data exchange; the vehicle's infotainment system is connected to the intercom module for data transmission and reception between the two modules.

[0007] The intercom module connects to other vehicles in the convoy via an antenna to enable communication.

[0008] The intercom module is based on DMR digital radio communication and uses an antenna to enable voice calls and data transmission.

[0009] The walkie-talkie module is connected to the vehicle's infotainment system via a USB interface, enabling data exchange and allowing the vehicle's infotainment system to supply power to the walkie-talkie module.

[0010] The human-computer interaction module includes a car touch screen, a car microphone module, a car voice module, and / or car operation buttons.

[0011] A pre-developed team-up app runs on the vehicle's infotainment system, allowing each vehicle in the fleet to form an innovative team and communicate and interact within the team.

[0012] A method for network-free V2V interconnection in a vehicle-to-vehicle (V2V) group, wherein communication interaction information is recorded through the vehicle's infotainment system. After the communication interaction information is recorded, the current vehicle sends the communication interaction information to other vehicles in the group through an intercom module and an antenna. After receiving the communication interaction information through the antenna, the other vehicles in the group parse the data through the intercom module and send it to the vehicle's infotainment system for display and interaction.

[0013] When creating a team, the team password is used to verify the vehicles in the team. After successful verification, the vehicles enter the team and enable communication and data exchange between teams.

[0014] Develop a team-up app that runs on the vehicle's infotainment system. Users can create and join teams through the team-up app. The team-up app uses password verification to determine whether the user's vehicle has joined or created a team.

[0015] After a user joins a travel group, they can view the real-time location of all members in the group on the group app. The real-time location of each vehicle is transmitted to other vehicles in the group via a walkie-talkie module and antenna.

[0016] Triggering the voice button in the team-up app will activate the vehicle's microphone to record the voice used for recording. The recording will then be converted by the vehicle's infotainment system and sent to other vehicles in the team.

[0017] This invention significantly improves the vehicle connectivity experience in convoy driving scenarios, and its technical effects are reflected in the following aspects:

[0018] 1. By visualizing team location information in real time, we ensure that members' movements are transparent and traceable, guaranteeing the controllability of their itinerary while avoiding the risk of getting lost due to information gaps from the source, and improving team collaboration efficiency.

[0019] 2. Reduce communication costs among members when traveling in groups, accelerate team collaboration, break down communication barriers between teammates in offline environments, and effectively ensure travel safety;

[0020] 3. Adapt to user communication needs in multiple scenarios, improve information transmission efficiency, simplify collaboration processes, reduce switching between multiple tools (sending location via WeChat, reporting traffic conditions by phone), and reduce operating costs;

[0021] 4. Teammates can share hidden scenic spots and special locations outside the itinerary, enriching the group travel experience and enhancing interactivity. Teammates can explore different areas separately, giving the trip greater flexibility;

[0022] 5. Enables parallel processing of multiple tasks, improves operational efficiency, and ensures the real-time availability of team information, allowing users to monitor key information in real time even on other function pages. Attached Figure Description

[0023] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings:

[0024] Figure 1 Structural diagram;

[0025] Figure 2 Transmitter circuit schematic;

[0026] Figure 3 Receiver circuit schematic;

[0027] Figure 4 Workflow diagram. Detailed Implementation

[0028] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and the description of the preferred embodiments.

[0029] This implementation mainly addresses the communication interaction in offline situations when using cellular mobile IoT for convoy control in existing technical solutions. Since off-road vehicles are generally used in the wild, the stability and reliability of traditional cellular mobile internet are insufficient in the wild. In some uninhabited areas or deserts, the lack of network access can easily lead to communication terminals in the convoy, affecting the normal communication and exchange of the convoy. Therefore, this embodiment uses a walkie-talkie module to realize convoy interconnection and interaction based on radio communication technology in offline situations.

[0030] like Figure 1 As shown in this embodiment, a network-free platooning V2V interconnection system is provided. The system includes an intercom module, an antenna, and a vehicle-mounted unit installed on each vehicle. Multiple vehicles participate in the platooning, and communication data interaction between vehicles is achieved through the intercom module, antenna, and vehicle-mounted unit installed on the vehicles.

[0031] In each vehicle in the convoy, the in-vehicle human-machine interaction module is connected to the vehicle's infotainment system for data exchange; the infotainment system is connected to the intercom module for data transmission and reception between the two; and the intercom module is connected to other vehicles in the convoy via an antenna for communication.

[0032] The in-vehicle human-machine interface (HMI) module is used to input information that users wish to interact with, including voice, text, and images. This information is input through the HMI module and then sent to the intercom module. The intercom module is based on DMR digital radio communication and uses an antenna to achieve both communication and data transmission. The intercom module conforms to the DMR digital intercom communication standard; it is a narrowband private network communication device that achieves communication and data transmission in half-duplex mode. The intercom module does not require a network; simply pressing the intercom button initiates a call, providing communication assurance for vehicle communication. The intercom module provides a data transmission channel and can work with the vehicle's infotainment system to achieve functions such as real-time location sharing, text chat, emergency images, shared settings, and emergency alarms. The intercom module converts the input images, voice, and text data and transmits it as a radio signal through the antenna. This signal is received by surrounding vehicles within communication range. After receiving the signal through their antennas, the surrounding vehicles decode the signal through the intercom module and send it to the vehicle's infotainment system, where the system displays the received data.

[0033] In this embodiment, the walkie-talkie module is connected to the vehicle's infotainment system via a USB interface for data exchange and power supply from the vehicle's infotainment system to the walkie-talkie module. The vehicle's infotainment system's USB interface serves both data transmission and power supply functions. The walkie-talkie module connects to the infotainment system via USB, enabling rapid data exchange and power supply to the walkie-talkie module.

[0034] In this embodiment, the human-machine interaction module includes a car touchscreen, a car microphone module, a car voice module, and / or car operation buttons. A pre-developed team-up app runs on the vehicle system, allowing vehicles in the fleet to form an innovative team and communicate and interact within the team. The team-up app runs on the vehicle system, enabling information operation and input through the car touchscreen connected to the system, voice input through the car microphone and voice modules, and function operation and data input through the car operation buttons.

[0035] This embodiment also provides a method for offline V2V interconnection in a platoon, wherein communication interaction information is recorded through the vehicle system. After the communication interaction information is recorded, the current vehicle sends the communication interaction information to other vehicles in the platoon through the intercom module and antenna. After receiving the communication interaction information through the antenna, the other vehicles in the platoon parse the data through the intercom module and send it to the vehicle system for display and interaction.

[0036] When creating a team, a team password is used to verify the vehicles in the team. After successful verification, the vehicles enter the team and enable communication and data exchange between teams. A team-building app is developed and runs on the vehicle's infotainment system. Users can create and join teams through the team-building app. The team-building app uses password verification to determine whether the user's vehicle has joined a team and to create a team.

[0037] After joining a travel group, users can view the real-time location of all members in the group on the group app. Each vehicle's real-time location is transmitted to other vehicles in the group via a walkie-talkie module and antenna. Triggering a voice button in the group app activates the vehicle's microphone to record the voice to be input, which is then transcribed by the vehicle's infotainment system and sent to other vehicles in the group.

[0038] In this embodiment, when a user sends a message to other vehicles in a platoon from their current vehicle, the intercom module detects the radio signal strength. If the radio signal strength is greater than a set threshold A, the user's input message is directly transmitted through the antenna and received by other vehicles in the platoon. Otherwise, if the radio signal strength is less than threshold A but greater than threshold B, signal delay or transmission compensation may occur. To address this, a tiered transmission mechanism is employed. When the radio signal strength is less than the set threshold, the intercom module analyzes the user's message, allowing only voice, address, and text messages, and prohibiting the transmission of images, videos, etc. If the user inputs a large image or video message, the system displays a weak signal warning and prohibits transmission. If the user's message is text, voice, or address information, transmission is allowed and the intercom module transmits it directly through the antenna. If the radio signal strength is less than threshold B, it indicates that the signal is extremely weak. At this time, only voice and text information transmission is allowed. In this state, the information entered by the user is judged. If the information entered by the user is text, the intercom module directly forwards the text information via radio. If the information entered by the user is voice, the vehicle unit recognizes the voice information, converts the voice information into text information, and then converts it via radio. Other vehicles in the convoy receive the text information and can convert it into voice through the voice playback system built into the vehicle unit system, thereby satisfying the user's voice needs as much as possible while meeting the transmission requirements. In this embodiment, if the voice information is converted into text for transmission, a voice tag is added to the transmitted information, and the text information and voice tag are forwarded together via radio. After receiving the information, other vehicles in the convoy determine whether the received information is text information converted from voice through the voice tag. If so, the host plays the text information into voice through the voice playback system, thereby satisfying the voice communication needs as much as possible under low signal strength conditions.

[0039] When the signal strength is between A and B, to improve the reliability and stability of data transmission, vehicles in the platoon share location information in real time. The distance between the current vehicle and other vehicles is calculated, a communication distance range is set, and the distance between the vehicle currently sending information and other vehicles in the platoon is determined. It is checked whether any vehicle's distance exceeds the set distance threshold; if so, a forwarding mode is executed. In forwarding mode, a relay vehicle is selected. Among vehicles in the platoon whose distance is less than the distance threshold, the one with the largest distance is chosen as the relay vehicle. After data is sent, the relay vehicle's intercom module receives the data and simultaneously transmits it to its own vehicle's infotainment system while also forwarding the received data wirelessly. By using a vehicle within the set range as a relay, the interactive information from the sending vehicle can be effectively forwarded to all vehicles in the platoon, reducing data interaction and transmission interruptions. Through relay forwarding, the reliability of transmission is effectively guaranteed.

[0040] In this embodiment, the pre-set signal strength thresholds A and B are pre-calibrated values; where A is greater than B. For example, A can be set to 70% of the normal signal strength; B can be set to 40% of the normal signal strength. This allows for different communication ranges to be divided according to signal strength, thereby meeting different transmission needs.

[0041] In this embodiment, a fleet needs to be created before it can be formed, otherwise the communication information will be received by others. Therefore, before forming a fleet, one of the vehicles is used as the main vehicle to form the fleet. The fleet password is entered in the fleet app on the main vehicle. Vehicle users within the radio communication range can establish a connection within the fleet by entering the password. In this way, as long as the vehicles in the fleet are within the communication range, they can synchronously update the vehicle interaction information within the fleet.

[0042] The creation and joining of teams are functions developed for the team-up app, enabling the establishment and joining of teams and providing basic data for subsequent interaction between vehicles through the app. Taking the team-up app's functions as an example: it supports real-time location sharing with teammates during team trips; transmits GPS information using the DMR data channel; GPS information is provided by the vehicle's infotainment system; real-time location display is implemented by the in-vehicle infotainment app; supports real-time intercom with teammates during team trips: using the DMR voice channel to achieve real-time intercom with teammates; supports digital and analog modes. It also supports all calls, group calls, and individual calls; advanced functions such as flexible team formation, naming, and call recording are implemented by the in-vehicle app; supports interaction with teammates in the team chat room during team trips: using the DMR data channel to send text and voice chat messages.

[0043] Taking creating and joining a team as an example:

[0044] 1. Creating and joining a team

[0045] 1) On the main page of the team-up app, users can "create a team" and "join a team".

[0046] ① Create a team:

[0047] a) The team creator is the "Captain" and possesses the "Captain" badge.

[0048] b) Supports setting team names (maximum 10 characters, no prohibited words allowed).

[0049] c) Supports setting team passwords (6-digit numeric code). Team passwords are automatically generated and cannot be customized. You can refresh to select a new numeric password. Once a team is created, the team password cannot be refreshed (the team password serves as the unique credential for the created team).

[0050] ② Join a team: Enter the password (6-digit numeric code) for the team you want to join. After completion, the team name and member information will be displayed. Click "Join Team" to enter the team. If the entered password does not exist, a pop-up window will display "This team does not exist".

[0051] 2) On the main page of the team-up app, the teams that the user has joined are displayed (including team name, members, and other information). If the joined team has been disbanded, a "Team disbanded" sign is displayed, and the team can be deleted.

[0052] 2. Function Entry

[0053] 1) Users click the "Join Team" button and select the "Travel Team" window (real-time location sharing can only be enabled after joining a travel team).

[0054] 2) Access "Travel Group" via voice assistant

[0055] 3. Offline real-time location sharing

[0056] 1) After joining a travel group, users can view the real-time location of all members on the group map (displaying each member's avatar). ※Note: After joining a group, users can view the real-time location of all members regardless of whether they are in group navigation mode.

[0057] 2) Click on a teammate's avatar on the travel group map to view the teammate's real-time distance information (unit: km, one decimal place, e.g., 1.7km).

[0058] 4. Offline real-time voice communication

[0059] 1) Intercom output status:

[0060] a) Activation method:

[0061] I. After clicking the "Mute Microphone" icon on the large screen, the icon will switch to "Microphone Recording" mode and enter voice intercom mode. Click the "Microphone Recording" icon again to end the intercom.

[0062] II. On the team map page, press the voice button on the steering wheel to switch to radio mode, and press the voice button again to end the conversation (the icon display on the large screen is the same as above).

[0063] b) Intercom duration: The maximum intercom duration is 30 seconds. The countdown starts automatically when the intercom is started and ends automatically when the maximum duration is reached. (Multiple people cannot intercom at the same time. When A is intercom, the intercom buttons of other people are grayed out. The function will be activated after A ends the intercom.)

[0064] c) Sound pickup channels: All microphones in the vehicle are turned on and in sound pickup mode.

[0065] 2) Information Reception Status:

[0066] a) Intercom reception: In team mode, the vehicle's loudspeakers automatically play the intercom conversation in real time.

[0067] 5. Team Chat Room:

[0068] Selecting the "Team Chat Room" function will pop up a team chat window on the left side of the team map, and it will remain in a constantly displayed state (if you switch to the "Real-time Talk" function, the team chat room window will collapse).

[0069] Chat room features: Supports sending voice messages, images, vehicle location coordinates, and entering a free chat mode.

[0070] 1) Sending voice messages:

[0071] a) Click the "Send Voice" button / icon to start voice recording, and click the button again to end voice recording and send the voice message to the chat room.

[0072] b) Press the voice button on the steering wheel in the team chat room to start voice recording, and press the voice button again to end recording and send a voice message.

[0073] c) The maximum duration of a single voice message is 30 seconds. A countdown will start automatically during voice recording, and the voice message will be sent automatically when the maximum duration is reached.

[0074] d) After a voice message is sent, it will be displayed in the chat room. The user needs to manually click to play it (it can be set to play automatically when a voice message is received). If the user clicks the voice message box during playback, playback will be paused. If the user clicks again, playback will resume from the paused point.

[0075] 2) Sending image messages:

[0076] a) Click the "Send Image" button / icon to open the system photo album, select images, and send the images to the chat room after confirming the selection. A maximum of 9 photos can be sent at a time.

[0077] b) After the image message is sent, it will be displayed in the chat room. Users can click to enlarge the image and long-press the image to save it to the system album.

[0078] 3) Vehicle location coordinates: Clicking the "Current Location" button / icon will send the current vehicle location information to the chat room. The location information is presented in latitude and longitude.

[0079] In this embodiment, when a user sends a message to other vehicles in a platoon from their current vehicle, the intercom module detects the radio signal strength. If the radio signal strength is greater than a set threshold A, the user's input message is directly transmitted through the antenna and received by other vehicles in the platoon. Otherwise, if the radio signal strength is less than threshold A but greater than threshold B, signal delay or transmission compensation may occur. To address this, a tiered transmission mechanism is employed. When the radio signal strength is less than the set threshold, the intercom module analyzes the user's message, allowing only voice, address, and text messages, and prohibiting the transmission of images, videos, etc. If the user inputs a large image or video message, the system displays a weak signal warning and prohibits transmission. If the user's message is text, voice, or address information, transmission is allowed and the intercom module transmits it directly through the antenna. If the radio signal strength is less than threshold B, it indicates that the signal is extremely weak. At this time, only voice and text information transmission is allowed. In this state, the information entered by the user is judged. If the information entered by the user is text, the intercom module directly forwards the text information via radio. If the information entered by the user is voice, the vehicle unit recognizes the voice information, converts the voice information into text information, and then converts it via radio. Other vehicles in the convoy receive the text information and can convert it into voice through the voice playback system built into the vehicle unit system, thereby satisfying the user's voice needs as much as possible while meeting the transmission requirements. In this embodiment, if the voice information is converted into text for transmission, a voice tag is added to the transmitted information, and the text information and voice tag are forwarded together via radio. After receiving the information, other vehicles in the convoy determine whether the received information is text information converted from voice through the voice tag. If so, the host plays the text information into voice through the voice playback system, thereby satisfying the voice communication needs as much as possible under low signal strength conditions.

[0080] In a preferred embodiment, when the signal strength is between A and B, to improve the reliability and stability of data transmission, vehicles in the platoon share location information in real time. The distance between the current vehicle and other vehicles is calculated, a communication distance range is set, and the distance between the vehicle currently sending information and other vehicles in the platoon is determined. It is then determined whether any vehicle's distance exceeds the set distance threshold; if so, a forwarding mode is executed. In forwarding mode, a relay vehicle is determined. Among the vehicles in the platoon whose distance is less than the distance threshold, the one with the largest distance is selected as the relay vehicle. After data is sent, the relay vehicle's intercom module receives the data and simultaneously transmits it to its own vehicle's infotainment system while also forwarding the received data wirelessly. By using a vehicle within the set range as a relay, the interactive information of the sending vehicle can be effectively forwarded to all vehicles in the platoon, reducing data interaction and transmission interruptions. Through relay forwarding, the reliability of transmission is effectively guaranteed. In vehicle platooning scenarios, the reliability and stability of communication are crucial. Vehicles share their location, status, and control commands in real time via radio; any data interruption may affect the safety of platoon coordination. However, the distance between vehicles is constantly changing, and the signal strength fluctuates, especially within the specific signal strength range AB. This usually means the signal is at a moderate to weak level, neither stable and reliable under strong signals nor completely lost. In this situation, relying solely on single-hop direct communication, distant vehicles are highly susceptible to packet loss due to signal attenuation. To address this, a location-aware dynamic relay forwarding mechanism is introduced. This mechanism can reliably propagate messages to the entire platoon by using teammates as relay nodes when the signal is at an edge. The core premise of this mechanism is the continuous real-time sharing of location information among platoon vehicles. Each vehicle obtains its own coordinates through the Global Navigation Satellite System and periodically broadcasts them via radio, allowing any vehicle in the platoon to know the real-time location of all teammates. Based on this location data, the vehicle currently sending the information (the source vehicle) can calculate its spatial distance from every other vehicle in real time. Simultaneously, the system pre-sets a communication distance threshold Dth. The selection of this threshold is directly related to the reliable communication distance corresponding to the signal strength range AB, and can be considered as the maximum single-hop communication radius that can maintain a low bit error rate under these signal conditions. Each time the source vehicle needs to send interactive information, it iterates through the maintained list of vehicle distances within the platoon, checking if any vehicle's distance is greater than Dth. If all vehicle distances are less than or equal to Dth, it means the current signal strength is sufficient to cover all teammates, and the source vehicle can directly broadcast data, which all vehicles can reliably receive. However, once it finds that at least one vehicle's distance is greater than Dth, it means that direct communication can no longer guarantee the reception quality for distant vehicles in the queue, and the system immediately activates forwarding mode. The key step after entering forwarding mode is determining the optimal relay vehicle.The source vehicle is not randomly selected, but follows the "maximum distance relay" criterion: among all vehicles with a distance less than Dth, the one furthest from the source vehicle is chosen as the relay. This selection logic has a clear network optimization purpose. A distance less than Dth means that these vehicles are within the reliable single-hop coverage range of the source vehicle and can correctly decode the data sent by the source vehicle. Choosing the furthest one is equivalent to pushing the relay node as far as possible to the coverage edge, making it the furthest reachable fulcrum of the source vehicle's communication range. When this relay vehicle forwards a message again with itself as the center and the same communication capability (i.e., the same coverage radius based on Dth), its signal front can extend to the maximum extent, thus having a high probability of covering target vehicles that were originally outside the direct range of the source vehicle. For example, consider a convoy: assuming Dth is 300 meters, source vehicle A is 240 meters away from vehicle B, 280 meters away from vehicle C, and 350 meters away from vehicle D. Since the distance to vehicle D is 350 meters > 300 meters, the forwarding mode is triggered. Among vehicles B and C, which are within 300 meters of each other, vehicle C (280 meters), being the furthest away, is selected as the relay. After receiving and forwarding the message, vehicle C, being closer to vehicle D, often finds the distance between C and D less than 300 meters, allowing vehicle D to successfully receive the message. If the closer vehicle B were chosen as the relay, the distance between B and D might still be 340 meters, exceeding the threshold and requiring a secondary relay, increasing latency and channel occupancy. Therefore, selecting the furthest reachable node delivers the message to the entire platoon with the fewest hops, significantly improving spectral efficiency and real-time performance.

[0081] The forwarding process is completed collaboratively at the physical and data link layers. When the source vehicle transmits a data packet via radio, the intercom module in the selected relay vehicle receives it. Instead of directly transmitting the data to its own vehicle's infotainment system for processing by upper-layer applications, it simultaneously performs a crucial operation: while sending the data to the infotainment system, it immediately retransmits the complete original data via radio, achieving transparent forwarding. This "receive-double-transmit" action is completed within an extremely short delay, and the forwarded data signal format and frequency are exactly the same as the original transmission, thus providing transparent coverage to other vehicles in the convoy. Vehicles that were originally more than a threshold away from the source vehicle are now within the reliable communication range of the relay vehicle and can successfully receive the data. The relay vehicle's infotainment system also uses this data to update its own location, display its status, or respond to control requests. In this way, a message is seamlessly transmitted to the entire convoy via a two-hop path of "source vehicle → relay vehicle → remote vehicle," eliminating direct connection blind spots.

[0082] This location-triggered relay forwarding effectively solves the transmission uncertainty caused by signal fluctuations in the AB interval. It evolves the convoy from a simple peer-to-peer broadcast network into a multi-hop network with dynamic self-healing capabilities. Even in non-line-of-sight environments such as curves and hills where signal attenuation occurs, as long as a vehicle in the convoy is in a favorable middle position, it can act as a relay, ensuring no information loss. Relay selection is completely distributed, with the source vehicle making real-time decisions based on its locally maintained location database, eliminating the need for central scheduling and resulting in extremely fast response times. This significantly reduces the risk of data exchange interruptions, ensuring low-latency and reliable delivery of control commands and location information even in highly dynamic scenarios such as convoy lane changes and emergency braking. Ultimately, through a closed loop of "intelligent distance sensing, on-demand relay activation, and optimal maximum extension," the reliability of vehicular communication is elevated to a new level, providing strong support for safe and collaborative convoy driving.

[0083] In this embodiment, the pre-set signal strength thresholds A and B are pre-calibrated values; where A is greater than B. For example, A can be set to 70% of the normal signal strength; B can be set to 40% of the normal signal strength. This allows for different communication ranges to be divided according to signal strength, thereby meeting different transmission needs.

[0084] The method and system for wireless V2V interconnection mainly consist of two parts: component design and development, and scenario construction.

[0085]

I

[0086]

[0087]

[0088]

[0089]

II

[0090] 1. The intercom module conforms to the DMR digital intercom communication standard. It is a narrowband private network communication device that enables voice calls and data transmission in half-duplex mode.

[0091] 2. The intercom module does not require a network; simply press the intercom button to make a call, providing communication support for vehicle communication.

[0092] 3. The intercom module provides a data transmission channel, which can work with the vehicle-mounted unit to achieve functions such as real-time location sharing, text chat, emergency images, shared settings, and emergency alarms.

[0093]

III

[0094] 1. Supports real-time location sharing with teammates when traveling in a group.

[0095] 1) Utilize the DMR data channel to transmit GPS information;

[0096] 2) GPS information is provided by the vehicle's infotainment system;

[0097] 3) Real-time location display, implemented through a vehicle-mounted infotainment app;

[0098] 2. Supports real-time intercom with teammates when traveling in a group.

[0099] 1) Utilize the DMR's voice channel to achieve real-time communication with teammates;

[0100] 2) Supports both digital and analog modes. Also supports all calls, group calls, and individual calls;

[0101] 3) Advanced functions such as flexible team formation, naming, and call recording are implemented by the vehicle's in-vehicle app;

[0102] 3. When traveling in a group, you can interact with your teammates in the group chat room;

[0103] 1) Use the DMR data channel to send text, voice and other chat messages.

[0104]

IV

[0105] 1. Creating and joining a team

[0106] 1) On the main page of the team-up app, users can "create a team" and "join a team";

[0107] ① Create a team:

[0108] a) The team creator is the "team leader" and has the "team leader" badge;

[0109] b) Supports setting team names (maximum 10 characters, no prohibited words allowed);

[0110] c) Supports setting team passwords (6-digit numeric code). Team passwords are automatically generated and cannot be customized. You can refresh to select a new numeric password. Once a team is created, the team password cannot be refreshed (the team password serves as the unique credential for the created team).

[0111] ② Join a team: Enter the password (6-digit code) of the team you want to join. After completion, the name of the corresponding team and member information will be displayed. Click "Join Team" to enter the team. If the entered password does not exist, a pop-up window will prompt "This team does not exist".

[0112] 2) On the main page of the team-up app, the teams that the user has joined are displayed (including team name, members, and other information). If the joined team has been disbanded, a "Team disbanded" sign is displayed, and the team can be deleted.

[0113] 2. Function Entry

[0114] 1) Users click the "Join Team" button and select the "Travel Team" window (real-time location sharing can only be enabled after joining a travel team).

[0115] 2) Access "Travel Group" via voice assistant;

[0116] 3. Offline real-time location sharing

[0117] 1) After joining a travel group, users can view the real-time location of all members in the group on the group map (displaying each member's avatar); Note: After joining a group, users can view the real-time location of all members regardless of whether they are in group navigation mode.

[0118] 2) Click on a teammate's avatar on the travel team map to view the teammate's real-time distance information (unit: km, one decimal place, e.g., 1.7km).

[0119] 4. Offline real-time voice communication

[0120] 1) Intercom output status:

[0121] a) Activation method:

[0122] Ⅰ. After clicking the “Mute Microphone” icon on the large screen, the icon will switch to “Microphone Recording” mode and enter the voice intercom mode. Click the “Microphone Recording” icon again to end the intercom.

[0123] II. On the team map page, press the voice button on the steering wheel to switch to radio mode, and press the voice button again to end the conversation (the icon display on the large screen is the same as above).

[0124] b) Intercom duration: The maximum intercom duration is 30 seconds. When the intercom is started, the countdown will start automatically and the intercom will end automatically when the maximum duration is reached. (Multiple people cannot intercom at the same time. When A is intercom, the intercom buttons of other people are grayed out. The function will be activated after A ends the intercom.)

[0125] c) Sound pickup channels: All microphones in the vehicle are turned on and in sound pickup mode.

[0126] 2) Information Reception Status:

[0127] a) Intercom reception: In team mode, the vehicle's loudspeakers automatically play the intercom conversation in real time.

[0128] 5. Team Chat Room:

[0129] Selecting the "Team Chat Room" function will pop up a team chat window on the left side of the team map, and it will always be displayed (if you switch to the "Real-time Talk" function, the team chat room window will collapse).

[0130] Chat room features: Supports sending voice messages, pictures, vehicle location coordinates, and entering a chat mode.

[0131] 1) Sending voice messages:

[0132] a) Click the "Send Voice" button / icon to start voice recording. Click the button again to end voice recording and send the voice message to the chat room.

[0133] b) Press the voice button on the steering wheel in the team chat room to start voice recording, and press the voice button again to end recording and send a voice message.

[0134] c) The maximum duration of a single voice message is 30 seconds. The countdown will start automatically during voice recording, and the voice message will be sent automatically when the maximum duration is reached.

[0135] d) After a voice message is sent, it will be displayed in the chat room. The user needs to manually click to play it (it can be set to play automatically when a voice message is received). If the user clicks the voice message box during playback, playback will be paused. If the user clicks again, playback will resume from the paused point.

[0136] 2) Sending image messages:

[0137] a) Click the "Send Image" button / icon to open the system photo album, select images, and send the images to the chat room after confirming the selection. A maximum of 9 photos can be sent at a time.

[0138] b) After the image message is sent, it will be displayed in the chat room. Users can click to enlarge the image and long-press the image to save it to the system album.

[0139] 3) Vehicle location coordinates: Click the "Current Location" button / icon to send the current vehicle location information to the chat room. The location information is presented in latitude and longitude.

[0140] like Figure 2As shown, this scheme is a digital mobile radio (DMR) transmission link. Its core is based on the HF6851 baseband control + BK4819 RF transmission architecture, realizing a complete link of audio acquisition, digital modulation, power amplification, and RF transmission. The audio signal acquired by the microphone is processed by the HF6851, and then the BK4819 is controlled via the I²C / SPI bus to complete RF modulation. The output RF signal undergoes multi-stage power amplification (2SC4226+WMN050+RD02), and with the help of the NJM2904 automatic power control (APC), power is stabilized and adjusted. Finally, the signal is switched to the ANT port for transmission via an antenna switch. It also supports USB host computer communication and battery power supply, constructing a highly efficient and stable digital wireless transmission system.

[0141] like Figure 3 As shown, the system receives radio frequency signals via an antenna (ANT). After the signal path is selected by an antenna switch, the signal is sent to a low-noise amplifier (LNA) to amplify the weak radio frequency signal and improve the receiving sensitivity. The amplified signal enters the BK4819 RF module (U300) to perform down-conversion, demodulation, and audio detection. The output baseband signal is then transmitted to the HF6851 microcontroller and digital mobile radio module (U1) to complete protocol parsing, audio decoding, and system control. Finally, the processed audio signal drives the speaker to play the audio. At the same time, the system communicates with the host computer via a USB interface, supporting configuration, debugging, and data interaction. The system as a whole constructs a complete digital radio receiving link from radio frequency reception and signal processing to audio output and interaction with the host computer.

[0142] This invention significantly improves the vehicle connectivity experience in convoy driving scenarios, and its technical effects are reflected in the following aspects:

[0143] 1. By visualizing team location information in real time, we ensure that members' movements are transparent and traceable, guaranteeing the controllability of their itinerary while avoiding the risk of getting lost due to information gaps from the source, and improving team collaboration efficiency.

[0144] 2. Reduce communication costs among members when traveling in groups, accelerate team collaboration, break down communication barriers between teammates in offline environments, and effectively ensure travel safety;

[0145] 3. Adapt to user communication needs in multiple scenarios, improve information transmission efficiency, simplify collaboration processes, reduce switching between multiple tools (sending location via WeChat, reporting traffic conditions by phone), and reduce operating costs;

[0146] 4. Teammates can share hidden scenic spots and special locations outside the itinerary, enriching the group travel experience and enhancing interactivity. Teammates can explore different areas separately, giving the trip greater flexibility;

[0147] 5. Enables parallel processing of multiple tasks, improves operational efficiency, and ensures the real-time availability of team information, allowing users to monitor key information in real time even on other function pages.

[0148] Obviously, the specific implementation of this invention is not limited to the above-described methods. Any non-substantial improvements made using the inventive concept and technical solution of this invention are within the protection scope of this invention.

Claims

1. A networkless V2V interconnection system, characterized in that: The system includes an intercom module, an antenna, and a vehicle-mounted unit installed on each vehicle; The vehicle-mounted human-machine interaction module is connected to the vehicle's infotainment system for data exchange; the vehicle's infotainment system is connected to the intercom module for data transmission and reception between the two modules. The intercom module connects to other vehicles in the convoy via an antenna to enable communication.

2. The networkless V2V interconnection system as described in claim 1, characterized in that: The intercom module is based on DMR digital radio communication and uses an antenna to enable voice calls and data transmission.

3. A network-free V2V interconnection system as described in claim 1 or 2, characterized in that: The walkie-talkie module is connected to the vehicle's infotainment system via a USB interface, enabling data exchange and allowing the vehicle's infotainment system to supply power to the walkie-talkie module.

4. The networkless V2V interconnection system as described in claim 1, characterized in that: The human-computer interaction module includes a car touch screen, a car microphone module, a car voice module, and / or car operation buttons.

5. The networkless V2V interconnection system as described in claim 4, characterized in that: A pre-developed team-up app runs on the vehicle's infotainment system, allowing each vehicle in the fleet to form an innovative team and communicate and interact within the team.

6. A method for wireless V2V interconnection as described in any one of claims 1-5, characterized in that: The communication interaction information is entered through the vehicle's infotainment system. After the communication interaction information is entered, the current vehicle sends the communication interaction information to other vehicles in the convoy through the intercom module and antenna. After receiving the communication interaction information through the antenna, the other vehicles in the convoy parse the data through the intercom module and send it to the vehicle's infotainment system for display and interaction.

7. The method for wireless V2V interconnection as described in claim 6, characterized in that: When creating a team, the team password is used to verify the vehicles in the team. After successful verification, the vehicles enter the team and enable communication and data exchange between teams.

8. The method for wireless V2V interconnection as described in claim 7, characterized in that: Develop a team-up app that runs on the vehicle's infotainment system. Users can create and join teams through the team-up app. The team-up app uses password verification to determine whether the user's vehicle has joined or created a team.

9. The method for wireless V2V interconnection as described in claim 7, characterized in that: After a user joins a travel group, they can view the real-time location of all members in the group on the group app. The real-time location of each vehicle is transmitted to other vehicles in the group via a walkie-talkie module and antenna.

10. The method for wireless V2V interconnection as described in claim 7, characterized in that: Triggering the voice button in the team-up app will activate the vehicle's microphone to record the voice used for recording. The recording will then be converted by the vehicle's infotainment system and sent to other vehicles in the team.

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