Power compensation method, v2x system, vehicle and storage medium

Abstract

The application provides a power compensation method, a V2X system, a vehicle and a storage medium. It relates to the technical field of wireless communication, wherein, in the power compensation method, a V2X antenna sends a downlink communication signal to a V2X module, the V2X module feeds back an uplink communication signal to the V2X antenna in response to the downlink communication signal, so that the output power of the V2X signal is given to the V2X antenna, wherein the output power of the V2X signal is the expected transmission power of the V2X module, and then the V2X antenna performs power compensation based on the output power of the V2X signal, thereby achieving the purpose that the actual transmission power of the V2X signal is consistent with the expected transmission power of the V2X module. Based on the uplink and downlink communication process, the V2X antenna always adjusts the actual transmission power of the V2X signal with the output power of the V2X signal as the target value, so that the power compensation accuracy is improved.

Description

Technical Field

[0001] This application relates to the field of wireless communication technology, specifically to a power compensation method, a V2X system, a vehicle, and a storage medium. Background Technology

[0002] V2X stands for Vehicle to everything, meaning the connection between a vehicle and everything else. X represents all participants in transportation, including other vehicles, transportation infrastructure, and pedestrians.

[0003] In traditional solutions, a V2X system includes a V2X antenna and a V2X module, connected by a coaxial cable. The V2X antenna is typically mounted in various locations on the vehicle, such as the roof, front and rear windshields, front and rear bumpers, and side mirrors. The V2X module is usually integrated with the onboard equipment. It can be seen that the V2X module and V2X antenna are mounted at considerable distances. Furthermore, the V2X antenna's radio frequency signal operates in the 5.85–5.925 GHz frequency band, and longer signal transmission distances within this band result in significant signal loss.

[0004] Significant signal loss can severely reduce the signal power of the V2X signal actually transmitted by the V2X antenna, as well as the signal power of the received V2X signal, thus leading to a decline in communication quality and affecting the communication reliability of onboard equipment. Summary of the Invention

[0005] This application aims to provide a power compensation method, a V2X system, a vehicle, and a storage medium, which will be described below from the following aspects.

[0006] In a first aspect, a power compensation method is provided, which is applied to a V2X antenna in a V2X system, the V2X system further including a V2X module. The method includes: transmitting a downlink communication signal to the V2X module, the downlink communication signal carrying antenna status information, the antenna status information including at least one of temperature information, transmitted data packet count, and status / fault information; receiving an uplink communication signal transmitted by the V2X module in response to the downlink communication signal, the uplink communication signal carrying the output power of the V2X signal output by the V2X module; and performing power compensation based on the output power.

[0007] In one embodiment, power compensation based on output power includes: obtaining the actual transmit power of the V2X signal transmitted by the V2X antenna; determining a power compensation value based on the difference between the actual transmit power and the output power; and performing power compensation based on the power compensation value.

[0008] In one embodiment, sending a downlink communication signal to a V2X module includes: receiving an instruction from the V2X module and sending a downlink communication signal to the V2X module based on the instruction.

[0009] In one embodiment, sending downlink communication signals to the V2X module includes: periodically sending downlink communication signals to the V2X module.

[0010] In one embodiment, the V2X antenna includes a receiving circuit and a transmitting circuit. The receiving circuit includes a low-noise amplifier (LNA), and the transmitting circuit includes a power amplifier (PA). Power compensation based on the output power includes: acquiring an ambient temperature value; determining the gain of the LNA and the gain of the PA based on the ambient temperature value; and performing power compensation based on the output power and the gain of the LNA, or performing power compensation based on the output power and the gain of the PA.

[0011] Secondly, a power compensation method is provided, applied to a V2X module in a V2X system, the V2X system also including a V2X antenna. The method includes: receiving a downlink communication signal transmitted by the V2X antenna; the downlink communication signal carrying antenna status information, the antenna status information including at least one of temperature information, transmitted data packet count, and status / fault information; and in response to the downlink communication signal, transmitting an uplink communication signal to the V2X antenna, the uplink communication signal carrying the output power of the V2X signal output by the V2X module, the output power being used for power compensation of the V2X antenna.

[0012] In one embodiment, the method further includes: sending a transmit / receive status control signal to the V2X antenna, the transmit / receive status control signal being used to enable the V2X antenna to receive V2X signals or transmit V2X signals.

[0013] Thirdly, a V2X system is provided, including a V2X antenna and a V2X module, which are connected via a coaxial cable. The V2X antenna transmits a downlink communication signal to the V2X module, the downlink communication signal carrying antenna status information, including at least one of temperature information, transmitted data packet count, and status / fault information. The V2X module receives the downlink communication signal transmitted by the V2X antenna and, in response to the downlink communication signal, transmits an uplink communication signal to the V2X antenna, the uplink communication signal carrying the output power of the V2X signal output by the V2X module. The V2X antenna receives the uplink communication signal and performs power compensation based on the output power.

[0014] Fourthly, a vehicle is provided that is equipped with a V2X system as described in the above embodiments.

[0015] Fifthly, a computer storage medium is provided that stores a computer program thereon, which, when executed by a processor, implements the method as described in any of the above embodiments.

[0016] This application provides a power compensation method in which a V2X antenna transmits a downlink communication signal to a V2X module. In response to this downlink communication signal, the V2X module feeds back an uplink communication signal to the V2X antenna, thereby providing the output power of the V2X signal to the V2X antenna. The output power of the V2X signal is the desired transmit power of the V2X module. The V2X antenna then performs power compensation based on the output power of the V2X signal, thus achieving the goal of matching the actual transmit power of the V2X signal with the desired transmit power of the V2X module. Based on this uplink and downlink communication process, this application ensures that the V2X antenna always adjusts the actual transmit power of the V2X signal using the output power of the V2X signal as the target value, improving the power compensation accuracy. Attached Figure Description

[0017] Figure 1 A schematic diagram of a V2X system is shown.

[0018] Figure 2 A schematic diagram of a V2X system is shown.

[0019] Figure 3 A schematic diagram of a power compensation method is shown.

[0020] Figure 4 A flowchart of a method for power compensation based on output power is shown.

[0021] Figure 5 A flowchart is shown for a method of power compensation based on output power.

[0022] Figure 6 A schematic diagram of a power compensation method is shown.

[0023] Figure 7 A schematic diagram of the interaction of a V2X system is shown.

[0024] Figure 8 A block diagram of a V2X module is shown. Detailed Implementation

[0025] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0026] With the rapid development of intelligent driving technology, vehicles need to acquire more and more real-time information about their surroundings, hence the emergence of V2X technology.

[0027] Generally, V2X antennas are installed on the exterior of vehicles to facilitate the reception of signals from the surrounding environment. However, the exterior of vehicles is often exposed to high temperatures and direct sunlight, leading to excessively high ambient temperatures. V2X modules are prone to malfunction in high-temperature environments, therefore, it is not suitable to install V2X modules together with V2X antennas. Currently, considering the heat dissipation issues of V2X modules, they are generally integrated with onboard equipment.

[0028] However, this introduces a new problem: the distance between the V2X module and the V2X antenna is relatively large. Since the V2X antenna's radio frequency signal operates in the 5.85–5.925 GHz band, signal loss within the cable is significant within this band. Furthermore, the greater the transmission distance within the cable, the greater the loss. Increased signal loss leads to reduced sensitivity of the V2X module when receiving V2X signals, as well as reduced signal power and shortened communication distance when the V2X antenna transmits V2X signals. This can cause serious reliability issues in the V2X system.

[0029] Therefore, effectively compensating for signal insertion loss introduced by the in-vehicle radio frequency transmission line is of great significance to the communication range in the external frequency band.

[0030] In traditional methods, power compensation involves measuring the actual transmit power, obtaining a pre-defined target transmit power value, and adjusting the power compensator based on both the actual and target transmit power values ​​until the actual transmit power reaches the target value. In this traditional approach, the target transmit power value remains constant. For example, if the target transmit power value is 23 dB, the V2X antenna's actual transmit power is always adjusted to 23 dB before transmitting into free space.

[0031] However, in this traditional approach, fixing the target transmit power value means that the V2X antenna can only transmit V2X signals at one transmit power, which limits the selectivity of the transmit power of the V2X signal.

[0032] In some cases, such as when the output power of the V2X signal from the V2X module is 20dB, meaning the V2X module expects the V2X signal to be transmitted at 20dB, traditional power compensation methods only adjust the actual transmission power of the V2X signal to 23dB before transmitting. Obviously, the actual transmission power of the V2X signal is inconsistent with the expected transmission power of the V2X module.

[0033] To address this issue, this application provides a power compensation method. In this method, a V2X antenna transmits a downlink communication signal to a V2X module. The V2X module, in response to the downlink communication signal, feeds back an uplink communication signal to the V2X antenna, thereby providing the V2X signal's output power to the V2X antenna. The output power of the V2X signal is the desired transmit power of the V2X module. The V2X antenna then performs power compensation based on the output power of the V2X signal, thus achieving the goal of matching the actual transmit power of the V2X signal with the desired transmit power of the V2X module. Based on this uplink and downlink communication process, this application ensures that the V2X antenna always adjusts the actual transmit power of the V2X signal using the output power of the V2X signal as the target value, improving power compensation accuracy.

[0034] The V2X system provided in the embodiments of this application will be described below with reference to the accompanying drawings.

[0035] like Figure 1 and Figure 2 As shown, Figure 1 A schematic diagram of a V2X system is shown. Figure 2 A schematic diagram of a V2X system is shown. The V2X system includes V2X antennas and V2X modules. Multiple V2X antennas can be installed at different locations within the vehicle. The V2X modules are located inside the vehicle and integrated with onboard equipment. The V2X modules are connected to the V2X antennas via coaxial cables.

[0036] like Figure 2 As shown, the V2X module includes UART_DL pin, UART_UL pin, TxRx_SW pin, and ANT_CV2X_TRx pin. The UART_DL pin is used to receive downlink communication signals (hereinafter referred to as UART_DL), the UART_UL pin is used to output uplink communication signals (hereinafter referred to as UART_UL), the TxRx_SW pin is used to output transmit / receive status control signals (hereinafter referred to as TxRx_SW), and the ANT_CV2X_TRx pin is used to output or receive V2X signals.

[0037] In this embodiment, the uplink communication signal UART_UL, the downlink communication signal UART_DL, the transmit / receive status control signal TxRx_SW, and the V2X signal are all coupled onto a single coaxial cable for transmission. This method avoids the use of multiple redundant cables, significantly saving costs and simplifying installation. Furthermore, the transmission time delay of these signals in the coaxial cable can be reduced to the microsecond level, exhibiting low latency.

[0038] The following is combined Figure 2 The structure of the V2X module is described. For example... Figure 2As shown, the crystal generates a frequency 1 carrier wave, which modulates the UART_UL onto the coaxial cable. The modulation process is as follows: the UART_UL pin is connected to an AND gate, the crystal is connected to an AND gate, the UART_UL and frequency 1 pass through the AND gate, and then are input to a filter circuit. After filtering, the filtered signal is coupled to the coaxial cable, which then transmits it to the V2X antenna.

[0039] Similarly, the crystal generates a frequency 2 carrier wave, which is used to modulate TxRx_SW onto the coaxial cable. The modulation process is as follows: the TxRx_SW pin is connected to an AND gate, the crystal is connected to an AND gate, TxRx_SW and frequency 2 pass through the AND gate, and then are input to a filter circuit. After filtering, the filtered signal is coupled to the coaxial cable and then transmitted to the V2X antenna.

[0040] In this embodiment of the application, a comparator, a filter circuit, and a detector circuit are also connected between the UART_DL pin and the coaxial cable. The coaxial cable transmits the UART_DL from the V2X antenna to the V2X module. The UART_DL is demodulated by the detector circuit, the filter circuit, and the comparator to restore the information carried in the UART_DL transmitted by the V2X antenna.

[0041] The following is combined Figure 2 The structure of the V2X antenna is described. For example... Figure 2 As shown, the V2X antenna includes an MCU, an antenna, and a compensation circuit. The V2X module transmits the uplink communication signal, transmit / receive status control signal, and V2X signal to the V2X antenna via a coaxial cable. After being frequency-divided by a multiplexer, the uplink communication signal and transmit / receive status control signal are separated from the V2X signal. The V2X signal then enters the compensation circuit and is transmitted by the antenna connected to the compensation circuit. The uplink communication signal and transmit / receive status control signal enter the MCU.

[0042] The MCU includes UART_DL, UART_UL, TxRx_SW, Temp_Det, Power_Det, and GPIOs pins. The UART_DL pin is used to output downlink communication signals (hereinafter referred to as UART_DL), the UART_UL pin is used to receive uplink communication signals, the TxRx_SW pin is used to receive transmit / receive status control signals, the Temp_Det pin is used to measure temperature, the Power_Det pin is used to measure actual transmit power, and the GPIOs pins are connected to the compensation circuit and used to control the compensation circuit's on / off state and power adjustment.

[0043] In this embodiment, the crystal generates a frequency 3 carrier wave, which modulates the UART_DL onto the coaxial cable. The modulation process is as follows: the UART_DL pin is connected to an AND gate, the crystal is connected to an AND gate, the UART_DL and frequency 3 pass through the AND gate, and then are input to a filter circuit. After filtering, the filtered signal is coupled to the coaxial cable and transmitted to the V2X module via the coaxial cable.

[0044] In this embodiment, a detector circuit, a filter circuit, and a comparator are also connected between the UART_UL pin and the coaxial cable. The uplink communication signal is demodulated by the detector circuit, the filter circuit, and the comparator to restore the information carried in the uplink communication signal sent by the V2X module.

[0045] The TxRx_SW pin is connected to a detector circuit, a filter circuit, and a comparator. The transmit / receive status control signal is demodulated by the detector circuit, the filter circuit, and the comparator to restore the information carried in the transmit / receive status control signal sent by the V2X module.

[0046] The transmit / receive status control signals are also transmitted to the compensation circuit, which controls the receiving path to be on when receiving V2X signals and the transmitting path to be on when transmitting V2X signals. The MCU's GPIO pins, based on the received transmit / receive status control signals, control the power compensation circuit to perform power compensation on the received V2X signals when receiving them and on the V2X signals to be transmitted when transmitting them.

[0047] In one implementation, the Temp_Det pin is connected to a thermistor to collect the temperature value monitored by the thermistor.

[0048] In one implementation, the Power_Det pin is connected to the antenna input and used to detect the antenna's output power value.

[0049] In one implementation, the compensation circuit includes an electronic attenuator, a receiving circuit, and a transmitting circuit. The receiving circuit includes a low-noise amplifier (LNA), and the transmitting circuit includes a power amplifier (PA). One end of the LNA is connected to a single-pole double-throw (SPD-D) switch K1, and the other end is connected to a SPD-D switch K2. One end of the PA is connected to SPD-D switch K1, and the other end is connected to SPD-D switch K2. An electronic attenuator is installed between SPD-D switch K1 and the coaxial cable, and SPD-D switch K2 is connected to the antenna. Transmit / receive status control signals are transmitted to SPD-D switches K1 and K2. GPIO pins are connected to the electronic attenuator, the receiving circuit, and the transmitting circuit.

[0050] The power compensation method provided in the embodiments of this application will be described below with reference to the accompanying drawings.

[0051] like Figure 3 As shown, Figure 3 A schematic diagram of a power compensation method is shown, which is applied to a V2X antenna in the V2X system provided in the above embodiment. The method includes:

[0052] Step 301: Send downlink communication signals to the V2X module.

[0053] The downlink communication signal carries antenna status information, which includes at least one of temperature information, transmitted data packet count, and status / fault information.

[0054] In some implementations, the V2X antenna periodically sends downlink communication signals to the V2X module.

[0055] In some other implementations, the V2X module can send commands to the V2X antenna, and after receiving the commands, the V2X antenna sends downlink communication signals to the V2X module.

[0056] In this embodiment of the application, the V2X antenna can modulate the downlink communication signal based on a frequency 3 carrier, thereby coupling the downlink communication signal into the coaxial cable.

[0057] In some implementations, when the vehicle starts and the V2X system powers on and begins to work, the V2X antenna sends downlink communication signals to the V2X module.

[0058] Step 302: Receive the uplink communication signal sent by the V2X module in response to the downlink communication signal.

[0059] The uplink communication signal carries the output power of the V2X signal output by the V2X module.

[0060] In one scenario, after receiving a downlink communication signal, the V2X module can immediately send an uplink communication signal. During this process, the V2X module can ignore the various information carried in the downlink communication signal.

[0061] In another scenario, after receiving a downlink communication signal, the V2X module can determine whether to re-initiate line loss measurement based on the temperature information, transmitted data packet count, and status / fault information within the downlink communication signal. The purpose of this line loss measurement is to perform power compensation.

[0062] For example, if the temperature information carried in the downlink communication signal changes more than a threshold compared to the temperature information carried in the downlink communication signal received within a preset time period, it indicates that the ambient temperature of the V2X antenna has changed significantly. When the ambient temperature changes, the line loss of the coaxial cable also changes. Specifically, the line loss changes more significantly when the ambient temperature changes more, and less significantly when the ambient temperature changes less. In this case, the V2X module can determine that a new line loss measurement is needed.

[0063] Alternatively, for example, if the number of transmitted data packets exceeds a threshold, it indicates that the current line loss has been used for a period of time and needs to be remeasured. Therefore, the V2X module can determine that the line loss needs to be remeasured.

[0064] In another scenario, after receiving a downlink communication signal, if the V2X module determines, based on multiple factors, that the output power of the output V2X signal has changed compared to the previous output power, the V2X module can send an uplink communication signal to the V2X antenna.

[0065] It should be noted that V2X antennas generally include a main antenna and a diversity antenna. For ease of description, the V2X antenna in this embodiment refers to the main antenna by default. When the main antenna fails, a switch can be made to use the diversity antenna as the main antenna. The specific implementation process includes: the downlink communication signal carries status / fault information. When the status / fault information indicates that the V2X antenna (main antenna) is faulty or in poor health, the V2X module can switch to the backup V2X antenna (diversity antenna) to transmit and receive V2X signals. The power compensation process of the backup V2X antenna (diversity antenna) is the same as the power compensation process of the V2X antenna (main antenna) provided in this embodiment, and will not be described in detail here.

[0066] Step 303: Perform power compensation based on the output power.

[0067] In this embodiment, the V2X antenna can demodulate the uplink communication signal to obtain the output power of the V2X signal output by the V2X module. In this way, the V2X antenna can use the output power as the desired transmission power to adjust the actual transmission power of the V2X signal, thereby making the actual transmission power of the V2X signal consistent with the desired transmission power of the V2X module and improving the accuracy of power compensation.

[0068] In this embodiment, the antenna is used simultaneously as a transceiver antenna. In one scenario, the antenna transmits a V2X signal. The V2X module outputs a V2X signal, which is transmitted to the V2X antenna via a coaxial cable and attenuated by an electronic attenuator. Then, a single-pole double-throw switch K1 activates the transmitting circuit, where the power amplifier (PA) amplifies the signal. Finally, a single-pole double-throw switch K2 outputs the signal to the antenna, which then transmits it into free space. During this process, the V2X antenna can adjust the electronic attenuator and power amplifier (PA) based on the output power to ensure that the power of the V2X signal output to the antenna matches the output power.

[0069] In another scenario, the antenna receives a V2X signal. A single-pole double-throw switch K2 activates the receiving circuit, which then amplifies the V2X signal via a low-noise amplifier (LNA). Another single-pole double-throw switch K1 activates the receiving circuit, attenuating the signal via an electronic attenuator before outputting it to a coaxial cable for transmission to the V2X module. During this process, the V2X antenna can determine the actual line loss based on the output power and adjust the electronic attenuator and LNA to compensate for the received V2X signal. Thus, when the V2X signal is transmitted from the antenna to the module via the coaxial cable, the power of the V2X signal received by the module is not affected by the line loss due to the compensation.

[0070] In this embodiment, the interaction between the uplink and downlink communication signals between the V2X antenna and the V2X module enables the V2X antenna to perform power compensation based on the output power of the V2X signal expected by the V2X module. This compensates for signal loss caused by longer transmission lines, ensuring that the transmit power and receive sensitivity of the vehicle's external antenna are the same as those of the V2X module, thus guaranteeing the reliability of in-vehicle communication.

[0071] Based on the above embodiments, such as Figure 4 As shown, Figure 4 A flowchart of a method for power compensation based on output power is shown, the method including steps 401 to 403.

[0072] Step 401: Obtain the actual transmit power of the V2X signal transmitted by the V2X antenna.

[0073] Step 402: Determine the power compensation value based on the difference between the actual transmit power and the output power.

[0074] Step 403: Perform power compensation based on the power compensation value.

[0075] In this embodiment, the V2X antenna can detect the actual transmit power of the V2X signal via the Power_Det pin. Then, the difference between the output power and the actual transmit power is calculated. For example, subtracting the actual transmit power from the output power yields the line loss value under the current temperature environment, which is the power compensation value.

[0076] In this embodiment of the application, the process of power compensation based on the power compensation value can be understood as increasing the power of the V2X signal by adjusting the electronic attenuator and the power amplifier (PA) or low noise amplifier (LNA), where the increased value can be understood as the power compensation value.

[0077] It should be noted that the gain of the power amplifier (PA) or low-noise amplifier (LNA) will also change when the ambient temperature changes. For example, the gain of the power amplifier (PA) is 20 dB when the ambient temperature is in the first temperature range, while the gain of the power amplifier (PA) is 22 dB when the ambient temperature is in the second temperature range.

[0078] Therefore, based on the above embodiments, please refer to the embodiments of this application. Figure 5 , Figure 5 A flowchart of a method for power compensation based on output power is shown, the method including steps 501 to 503.

[0079] Step 501: Obtain the ambient temperature value.

[0080] Step 502: Determine the gain of the power amplifier (PA) or the gain of the low-noise amplifier (LNA) based on the ambient temperature value.

[0081] Step 503: Perform power compensation based on the output power and the gain of the low-noise amplifier (LNA), or perform power compensation based on the output power and the gain of the power amplifier (PA).

[0082] In this embodiment, when the V2X antenna performs power compensation based on the power compensation value, it also needs to obtain the ambient temperature value collected by the Temp_Det pin. Different ambient temperature values ​​may correspond to different power amplifier (PA) gains or low-noise amplifier (LNA) gains. Simultaneously, the V2X antenna can also detect the actual transmit power of the V2X signal through the Power_Det pin.

[0083] In this embodiment of the application, when transmitting a V2X signal, a power compensation value can be determined based on the output power and the actual transmission power. Based on the power compensation value and the gain of the power amplifier (PA) corresponding to the current ambient temperature value, the adjustment amount of the electronic attenuator can be determined. Based on this, the electronic attenuator is adjusted to achieve power compensation for the V2X signal.

[0084] Based on a similar principle, when receiving a V2X signal, the adjustment amount of the electronic attenuator can be determined according to the power compensation value and the gain of the low noise amplifier (LNA) corresponding to the current ambient temperature value. Based on this, the electronic attenuator is adjusted to achieve compensation for the V2X signal.

[0085] In this embodiment, by detecting temperature and power, the bidirectional communication feedback system can adaptively determine compensation values ​​and adjust power based on temperature changes, thereby enabling real-time adjustment of the V2X antenna's transmit power and ensuring the accuracy of the V2X system.

[0086] Based on the above embodiments, such as Figure 6 As shown, Figure 6 A schematic diagram of a power compensation method is shown, which is applied to a V2X module of a V2X system, which also includes a V2X antenna. The method includes steps 601 to 602.

[0087] Step 601: Receive downlink communication signals transmitted by the V2X antenna.

[0088] The downlink communication signal carries antenna status information, which includes at least one of temperature information, transmitted data packet count, and status / fault information.

[0089] Step 602: In response to the downlink communication signal, an uplink communication signal is sent to the V2X antenna.

[0090] The uplink communication signal carries the output power of the V2X signal output by the V2X module, and the output power is used for power compensation of the V2X antenna.

[0091] Based on the above embodiments, in this embodiment of the application, the V2X module sends a transmit / receive status control signal to the V2X antenna. The transmit / receive status control signal can control the V2X system to transmit V2X signals during the high level period and receive V2X signals during the low level period.

[0092] After receiving the transmit / receive status control signal, the V2X antenna can directly control the compensation circuit to perform power compensation on the transmitted and received V2X signals based on the transmit / receive status control signal. This ensures synchronization of transmit and receive on both sides of the V2X module and V2X antenna, resulting in low latency and guaranteeing the stability of the V2X system. Simultaneously, the transmit / receive status control signal is also sent to the MCU, which uses interrupt edge detection to synchronize with GPIO pins, controlling the power compensation value of the compensation circuit during transmission and reception.

[0093] It should be noted that in this embodiment of the application, the uplink communication signal and the transmit / receive status control signal are independently separated, which can realize that the power values ​​of the uplink communication signal transmission correspond to the actual power of each frame when the V2X module transmits V2X signals.

[0094] In this embodiment, the V2X module communicates bidirectionally with the V2X antenna, sending the output power of the V2X signal to the V2X antenna for power compensation, thereby eliminating line loss generated when the V2X signal is transmitted via coaxial cable and improving the accuracy of the V2X system.

[0095] Based on the above embodiments, this application also provides a V2X system, which includes a V2X antenna and a V2X module, and the V2X antenna and V2X module are connected via a coaxial cable. Please refer to... Figure 7 , Figure 7 A schematic diagram of the interaction of a V2X system is shown.

[0096] Step 701: The V2X antenna sends downlink communication signals to the V2X module.

[0097] The downlink communication signal carries antenna status information, which includes at least one of temperature information, transmitted data packet count, and status / fault information.

[0098] Step 702: The V2X module receives the downlink communication signal transmitted by the V2X antenna and, in response to the downlink communication signal, transmits an uplink communication signal to the V2X antenna.

[0099] The uplink communication signal carries the output power of the V2X signal output by the V2X module;

[0100] Step 703: The V2X antenna receives the uplink communication signal and performs power compensation based on the output power.

[0101] The V2X system provided in this application embodiment can be referenced from the content disclosed in the various embodiments, and will not be repeated here.

[0102] Based on the above embodiments, this application also provides a vehicle equipped with a V2X system as described in the above embodiments, wherein the V2X antenna is installed at multiple different locations on the vehicle, the V2X module is integrated with the on-board equipment, and the V2X antenna and the V2X module are connected by a coaxial cable.

[0103] The process by which the V2X system implements the power compensation method provided in the embodiments of this application can refer to the disclosed content implemented above, and will not be repeated here.

[0104] like Figure 8 As shown, Figure 8A block diagram of a V2X module is shown. Figure 8 The V2X module 800 shown may include a memory 810, a processor 820, and an input / output interface 830. The memory 810, processor 820, and input / output interface 830 are connected via internal interconnects. The memory 810 stores instructions, and the processor 820 executes the instructions stored in the memory 810 to control the input / output interface 830 to receive input data and information, and output operation results and other data.

[0105] It should be understood that in the embodiments of this application, the processor 820 may be a general-purpose central processing unit (CPU), microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits to execute relevant programs in order to implement the technical solutions provided in the embodiments of this application.

[0106] The memory 810 may include read-only memory and random access memory, and provides instructions and data to the processor 820. A portion of the processor 820 may also include non-volatile random access memory. For example, the processor 820 may also store device type information.

[0107] In implementation, each step of the above method can be completed by the integrated logic circuits in the hardware of the processor 820 or by instructions in software. The power compensation method disclosed in the embodiments of this application can be directly implemented by the hardware processor, or by a combination of hardware and software modules in the processor. The software modules can be located in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory 810, and the processor 820 reads the information in memory 810 and completes the steps of the above method in conjunction with its hardware. To avoid repetition, detailed descriptions are not provided here.

[0108] It should be understood that in the embodiments of this application, the processor can be a central processing unit (CPU), or it can be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor.

[0109] Based on the above embodiments, this application also provides a computer storage medium storing a computer program. When the computer program is executed by a processor, it implements all the contents of the power compensation method in the above embodiments, which will not be repeated here.

[0110] The various solutions described above can be implemented individually or in combination with each other, and the embodiments of this application do not specifically limit them.

[0111] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0112] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A power compensation method, characterized in that, A V2X antenna for use in a V2X system, the V2X system further including a V2X module, the method comprising: Send a downlink communication signal to the V2X module. The downlink communication signal carries antenna status information, which includes at least one of temperature information, transmitted data packet count, and status / fault information. Receive an uplink communication signal sent by the V2X module in response to the downlink communication signal, wherein the uplink communication signal carries the output power of the V2X signal output by the V2X module; Perform power compensation based on the output power; The power compensation based on the output power includes: Adjust the actual transmit power of the V2X signal transmitted by the V2X antenna according to the output power, so that the actual transmit power is consistent with the output power.

2. The method according to claim 1, characterized in that, The power compensation based on the output power includes: Obtain the actual transmit power of the V2X signal transmitted by the V2X antenna; The power compensation value is determined based on the difference between the actual transmit power and the output power; Power compensation is performed based on the power compensation value.

3. The method according to claim 1, characterized in that, Sending downlink communication signals to the V2X module includes: Receive instructions from the V2X module and send downlink communication signals to the V2X module based on the instructions.

4. The method according to claim 1, characterized in that, Sending downlink communication signals to the V2X module includes: Periodically send downlink communication signals to the V2X module.

5. The method according to claim 1, characterized in that, The V2X antenna includes a receiving circuit and a transmitting circuit. The receiving circuit includes a low-noise amplifier (LNA), and the transmitting circuit includes a power amplifier (PA). The power compensation based on the output power includes: Obtain the ambient temperature value; The gain of the low-noise amplifier (LNA) and the gain of the power amplifier (PA) are determined based on the ambient temperature value. Power compensation is performed based on the output power and the gain of the low-noise amplifier (LNA), or power compensation is performed based on the output power and the gain of the power amplifier (PA).

6. A power compensation method, characterized in that, A V2X module applied to a V2X system, the V2X system further including a V2X antenna, the method comprising: Receive downlink communication signals transmitted by the V2X antenna; the downlink communication signals carry antenna status information, which includes at least one of temperature information, transmitted data packet count, and status / fault information; In response to the downlink communication signal, an uplink communication signal is transmitted to the V2X antenna. The uplink communication signal carries the output power of the V2X signal output by the V2X module. The output power is used for power compensation of the V2X antenna. The output power is used for power compensation of the V2X antenna, including: The output power is used to adjust the actual transmission power of the V2X signal transmitted by the V2X antenna so that the actual transmission power is consistent with the output power.

7. The method according to claim 6, characterized in that, The method further includes: Send a transmit / receive status control signal to the V2X antenna, the transmit / receive status control signal being used to enable the V2X antenna to receive V2X signals or transmit V2X signals.

8. A V2X system, characterized in that, It includes a V2X antenna and a V2X module, wherein the V2X antenna and the V2X module are connected via a coaxial cable. The V2X antenna transmits downlink communication signals to the V2X module. The downlink communication signals carry antenna status information, which includes at least one of temperature information, transmitted data packet count, and status / fault information. The V2X module receives downlink communication signals transmitted by the V2X antenna and, in response to the downlink communication signals, transmits uplink communication signals to the V2X antenna. The uplink communication signals carry the output power of the V2X signals output by the V2X module. The V2X antenna receives the uplink communication signal and performs power compensation based on the output power; The V2X antenna performs power compensation based on the output power, including: The V2X antenna adjusts the actual transmit power of the V2X signal it transmits based on the output power, so that the actual transmit power is consistent with the output power.

9. A vehicle, characterized in that, It is equipped with the V2X system as described in claim 8.

10. A computer storage medium, characterized in that, It stores a computer program thereon, which, when executed by a processor, implements the method as described in any one of claims 1 to 7.

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