Signal transmission method and system, vehicle, storage medium and computer program product

Abstract

The invention provides a signal transmission method and system, a vehicle, a storage medium and a computer program product. The method comprises the steps that a first signal generated by a multi-mode wireless communication mainboard module is acquired, and the first signal is used for representing radio frequency signals generated by a plurality of wireless modules in a multi-mode wireless communication mainboard; transmitting the first signal to a waveguide antenna module by using a plurality of wireless excitation sections, the plurality of wireless excitation sections being used for connecting a plurality of wireless modules and the waveguide antenna module in the multimode wireless communication mainboard; the waveguide antenna module is utilized to convert the first signal into a second signal, and the second signal is used for representing a to-be-transmitted signal in the waveguide antenna module; and transmitting the second signal to target receiving equipment through a plurality of antenna modules in the waveguide antenna module. According to the invention, the technical problems of high hardware cost and low transmission efficiency of a signal transmission method provided in the prior art are solved.

Description

Technical Field

[0001] The present disclosure relates to the field of vehicle communication technologies, and in particular, to a signal transmission method, system, vehicle, storage medium, and computer program product. Background Art

[0002] With the continuous evolution of vehicle communication technologies, from 4G to 5G, and the transformation of the Global Navigation Satellite System (GNSS) from single frequency to multi-mode and multi-band, coupled with the application of Ultra-Wideband (UWB) wireless communication technology in smart keys and the introduction of satellite communication functions, the integration level of the Telematics Control Unit (T-Box) has been significantly improved, but at the same time, some key technical problems have emerged.

[0003] In traditional T-Box designs, by using radio frequency connectors, the radio frequency signals of different wireless modules are transmitted via coaxial cables to the antennas at specified positions on the vehicle body, which not only increases the wiring harness cost but also makes the unified design of the vehicle's Electromagnetic Compatibility (EMC) complex and difficult to control. To address the above challenges, in subsequent designs, metal sheet antennas are directly hand-soldered to the edge of the Printed Circuit Board (PCB) to achieve direct signal feeding. Although the above improvements have enhanced the integration level of the T-Box to a certain extent, they have also led to a significant increase in the overall PCB size, made the manufacturing process more complex, and there are still radio frequency interference problems between various wireless function modules. In addition, with the continuous emergence of new technologies, such as UWB and 5G millimeter-wave communication, which involve higher-frequency wireless communication, the early-designed T-Box is difficult to adapt to the requirements of new frequency band functions and cannot achieve seamless upgrades, so the T-Box needs to be redesigned at each step of technological evolution, thereby increasing the R & D cost and cycle.

[0004] In response to the above problems, no effective solutions have been proposed yet. Summary of the Invention

[0005] Embodiments of the present disclosure provide a signal transmission method, system, vehicle, storage medium, and computer program product to at least solve the technical problems of high hardware cost and low transmission efficiency existing in the signal transmission method provided in the related art.

[0006] According to one aspect of the embodiments of the present disclosure, a signal transmission method is provided, which is applied to a signal transmission system. The signal transmission system includes: a multi-mode wireless communication main board module, a wireless excitation section, and a waveguide antenna module, and includes: obtaining a first signal generated by the multi-mode wireless communication main board module, where the first signal is used to represent radio frequency signals generated by multiple wireless modules in the multi-mode wireless communication main board; transmitting the first signal to the waveguide antenna module by using multiple wireless excitation sections, where the multiple wireless excitation sections are used to connect multiple wireless modules in the multi-mode wireless communication main board and the waveguide antenna module; converting the first signal into a second signal by using the waveguide antenna module, where the second signal is used to represent a signal to be transmitted in the waveguide antenna module; and transmitting the second signal to a target receiving device through multiple antenna modules in the waveguide antenna module.

[0007] Optionally, the antenna module includes: a waveguide feed port, a waveguide cavity, and an antenna radiation port. Transmitting the first signal to the waveguide antenna module by using multiple wireless excitation sections includes: transmitting the first signal to the waveguide feed port corresponding to the wireless excitation section, and transmitting the first signal to the waveguide cavity through the waveguide feed port, where the waveguide feed port is used to perform mode conversion on the first signal, and the waveguide cavity is used to connect the waveguide feed port and the antenna radiation port.

[0008] Optionally, converting the first signal into a second signal by using the waveguide antenna module includes: performing electromagnetic coupling on the first signal by using the waveguide feed port to obtain a third signal, where the third signal is used to represent an electromagnetic wave signal transmitted in the waveguide antenna module; and preprocessing the third signal to obtain the second signal.

[0009] Optionally, preprocessing the third signal to obtain the second signal includes: performing filtering processing on the third signal to obtain a fourth signal, where the frequency of the fourth signal is greater than the waveguide cut-off frequency, and the waveguide cut-off frequency is used to represent the signal transmission boundary frequency in the waveguide cavity; and performing phase adjustment on the fourth signal according to the phase synchronization rule to obtain the second signal.

[0010] Optionally, transmitting the second signal to the target receiving device through multiple antenna modules in the waveguide antenna module includes: obtaining polarization type information of the target receiving device, where the polarization type information is used to represent the vibration direction of the electric field vector when the target receiving device receives the second signal; determining a target polarization mode of the second signal according to the polarization type information of the target receiving device, where the target polarization mode is used to represent the electromagnetic field direction and rotation mode corresponding to the second signal; and controlling the antenna radiation port corresponding to the antenna module to transmit the second signal to the target receiving device according to the target polarization mode.

[0011] Optionally, the module types of the multiple antenna modules include at least one of the following: multi-band communication antenna type, navigation and positioning antenna type, wireless local area network antenna type, Bluetooth low energy antenna type, ultra-wideband communication antenna type, satellite communication antenna type.

[0012] According to another aspect of the embodiments of the present disclosure, there is also provided a signal transmission system, including: a multi-mode wireless communication main board module for generating a first signal, where the first signal is generated by multiple wireless modules in the multi-mode wireless communication main board module; a wireless excitation section for transmitting the first signal to a waveguide antenna module; and a waveguide antenna module for converting the first signal into a second signal and transmitting the second signal to a target receiving device, where the second signal is used to represent the signal to be transmitted in the waveguide antenna module.

[0013] Optionally, the antenna module includes: a waveguide feed port, a waveguide cavity, and an antenna radiation port. The wireless excitation section is further configured to: transmit the first signal to the waveguide feed port corresponding to the wireless excitation section, and transmit the first signal to the waveguide cavity through the waveguide feed port, where the waveguide feed port is used for mode conversion of the first signal, and the waveguide cavity is used to connect the waveguide feed port and the antenna radiation port.

[0014] Optionally, the waveguide antenna module is further configured to: perform electromagnetic coupling on the first signal by using the waveguide feed port to obtain a third signal, where the third signal is used to represent the electromagnetic wave signal transmitted in the waveguide antenna module; and preprocess the third signal to obtain the second signal.

[0015] Optionally, the waveguide antenna module is further configured to: perform filtering processing on the third signal to obtain a fourth signal, where the frequency of the fourth signal is greater than the waveguide cut-off frequency, and the waveguide cut-off frequency is used to represent the signal transmission boundary frequency in the waveguide cavity; and perform phase adjustment on the fourth signal according to the phase synchronization rule to obtain the second signal.

[0016] Optionally, the waveguide antenna module is further configured to: obtain the polarization type information of the target receiving device, where the polarization type information is used to represent the vibration direction of the electric field vector when the target receiving device receives the second signal; determine the target polarization mode of the second signal according to the polarization type information of the target receiving device, where the target polarization mode is used to represent the electromagnetic field direction and rotation mode corresponding to the second signal; and control the antenna radiation port corresponding to the antenna module to transmit the second signal to the target receiving device according to the target polarization mode.

[0017] According to another aspect of the embodiments of the present disclosure, there is also provided a vehicle, including: a processor; and a memory for storing processor-executable instructions, where the processor is configured to execute the instructions to implement the signal transmission method in the embodiments of the present disclosure.

[0018] According to another aspect of the embodiments of the present disclosure, there is also provided a computer-readable storage medium, which includes a stored executable program. When the executable program runs, it controls the device where the storage medium is located to execute the signal transmission method in the embodiments of the present disclosure.

[0019] According to another aspect of the embodiments of the present disclosure, there is also provided a computer program product, which includes computer instructions. When the computer instructions are executed by a processor, the signal transmission method in the embodiments of the present disclosure is implemented.

[0020] In the embodiments of the present disclosure, by obtaining the first signal generated by the multi-mode wireless communication motherboard module, using multiple wireless excitation segments to transmit the first signal to the waveguide antenna module, then using the waveguide antenna module to convert the first signal into a second signal, and finally transmitting the second signal to the target receiving device through multiple antenna modules in the waveguide antenna module, the purpose of improving the integration degree of the communication system and optimizing the signal transmission path is achieved, thereby realizing the technical effects of reducing the hardware cost and improving the signal transmission efficiency, and further solving the technical problems of high hardware cost and low transmission efficiency existing in the signal transmission method provided in the related art. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present disclosure, and constitute a part of the present disclosure. The illustrative embodiments and descriptions thereof of the present disclosure are used to explain the present disclosure, and do not constitute an improper limitation of the present disclosure. In the drawings:

[0022] Figure 1 is a flowchart of a signal transmission method according to one embodiment of the present disclosure;

[0023] Figure 2 is a schematic diagram of a waveguide structure according to one embodiment of the present disclosure;

[0024] Figure 3 is a schematic diagram of a signal transmission system according to one embodiment of the present disclosure;

[0025] Figure 4 is a schematic diagram of a waveguide antenna module according to one embodiment of the present disclosure;

[0026] Figure 5 is another schematic diagram of a waveguide antenna module according to one embodiment of the present disclosure;

[0027] Figure 6 is a structural block diagram of a signal transmission system according to one embodiment of the present disclosure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] To enable those skilled in the art to better understand the present disclosure solution, the following will clearly and completely describe the technical solutions in the embodiments of the present disclosure in conjunction with the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present disclosure.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the present disclosure and the above-mentioned accompanying drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0030] In the related art, for the T-Box, by using a radio frequency connector, the radio frequency signals of different wireless modules are transmitted to the antenna at a specified position on the vehicle body via a coaxial cable, which not only increases the harness cost, but also makes the unified design of the vehicle's EMC complex and difficult to control. To address the above challenges, in subsequent designs, a metal sheet antenna is directly hand-soldered to the edge of the PCB to achieve direct signal feeding. Although the above improvement has improved the integration of the T-Box to a certain extent, it has also led to a significant increase in the overall PCB size, made the manufacturing process more complex, and at the same time, it is difficult to solve the radio frequency interference problem between the wireless function modules. In addition, with the continuous emergence of new technologies, such as UWB, 5G millimeter wave communication, etc., which involve higher-frequency wireless communication, the early-designed T-Box is difficult to meet the requirements of new frequency band functions and cannot achieve seamless upgrade. Therefore, the T-Box needs to be redesigned at each step of the technological evolution, which further increases the R & D cost and cycle.

[0031] Specifically, the traditional T-Box design fails to fully consider the rapid iteration of future technologies. The independent design of each wireless function module leads to the fragmentation of the overall system design, lacking unified planning and foresight. Although directly welding the metal sheet antenna to the edge of the PCB reduces the need for cables, it does not solve the key problems of electromagnetic compatibility and radio frequency interference. Instead, due to the increased physical size and manual soldering process, the PCB design difficulty increases and the cost rises. At the same time, with the application of high-frequency wireless communication technologies such as UWB and 5G millimeter waves, the signal transmission efficiency of traditional cables drops significantly, while the requirements for the accuracy and performance of high-frequency antenna design increase significantly. In addition, due to the lack of compatibility and reserved space for high-frequency communication modules, each technology iteration requires a re-design of the T-Box, which not only prolongs the product R & D cycle but also increases unnecessary costs.

[0032] The method embodiments can be executed in an electronic device including a memory and a processor or a similar computing device. Taking running on a computer terminal as an example, the computer terminal may include one or more processors (processors may include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), a Digital Signal Processing (DSP) chip, a Micro Controller Unit (MCU), a Field Programmable Gate Array (FPGA), a Neural-network Processor Unit (NPU), a Tensor Processing Unit (TPU), an Artificial Intelligence (AI) type processor, etc.) and a memory for storing data. Optionally, the above computer terminal may further include a transmission device for communication functions, input and output devices, and a display device. Those of ordinary skill in the art can understand that the above structural description is only illustrative and does not limit the structure of the above computer terminal. For example, the computer terminal may further include more or fewer components than the above structural description, or have a different configuration from the above structural description.

[0033] The memory can be used to store computer programs, for example, software programs of application software and modules, such as the computer program corresponding to the signal transmission method in the embodiments of the present disclosure. The processor executes various functional applications and data processing by running the computer program stored in the memory, that is, the above-mentioned signal transmission method is implemented. The memory may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memories. In some instances, the memory may further include a memory remotely disposed relative to the processor, and these remote memories can be connected to the mobile terminal through a network. Examples of the above network include but are not limited to the Internet, enterprise intranet, local area network, mobile communication network, and combinations thereof.

[0034] The transmission device is used to receive or send data via a network. Specific examples of the above network may include the wireless network provided by the communication provider of the mobile terminal. In one instance, the transmission device includes a network adapter (Network Interface Controller, abbreviated as NIC), which can be connected to other network devices through a base station and thus communicate with the Internet. In one instance, the transmission device may be a radio frequency (Radio Frequency, abbreviated as RF) module, which is used to communicate with the Internet wirelessly.

[0035] The display device can be, for example, a touch-screen liquid crystal display (Liquid Crustal Display, LCD) and a touch display (also referred to as a "touch screen" or "touch display screen"). The liquid crystal display enables the user to interact with the user interface of the mobile terminal. In some embodiments, the above mobile terminal has a graphical user interface (Graphical User Interface, GUI), and the user can perform human-computer interaction with the GUI through finger contacts and / or gestures on the touch-sensitive surface. The human-computer interaction function here optionally includes the following interactions: creating web pages, drawing, word processing, creating electronic documents, games, video conferencing, instant messaging, sending and receiving emails, call interfaces, playing digital videos, playing digital music, and / or web browsing, etc. The executable instructions for performing the above human-computer interaction functions are configured / stored in a computer program product or readable storage medium executable by one or more processors.

[0036] According to the embodiments of the present disclosure, a method embodiment of a signal transmission method is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order than here.

[0037] Figure 1 is a flowchart of a signal transmission method according to an embodiment of the present disclosure. As Figure 1 shown, the method includes the following steps:

[0038] Step S11, obtaining a first signal generated by a multi-mode wireless communication main board module, where the first signal is used to represent radio frequency signals generated by multiple wireless modules in the multi-mode wireless communication main board;

[0039] Step S12, transmitting the first signal to a waveguide antenna module by using multiple wireless excitation segments, where the multiple wireless excitation segments are used to connect multiple wireless modules and the waveguide antenna module in the multi-mode wireless communication main board;

[0040] Step S13, converting the first signal into a second signal by using the waveguide antenna module, where the second signal is used to represent a signal to be transmitted in the waveguide antenna module;

[0041] Step S14, transmitting the second signal to a target receiving device through multiple antenna modules in the waveguide antenna module.

[0042] The above-mentioned multi-mode wireless communication main board module refers to a highly integrated PCB main board used in intelligent vehicles or other intelligent devices to support and implement multi-modal wireless communication functions. Specifically, the multi-mode wireless communication main board module integrates a microcontroller unit (MCU) to uniformly manage and control signal processing between different wireless modules, and coordinate the generation, reception, and transmission of signals.

[0043] The above-mentioned first signal refers to the original radio frequency signal generated by each wireless communication module on the multi-mode wireless communication main board module. Specifically, the first signal contains the electromagnetic wave form of wireless communication information and is the signal state that has not been finally converted and optimized by the antenna system. In the communication system of an intelligent vehicle or an intelligent device, the first signal is a key information carrier in the wireless communication process.

[0044] The above-mentioned wireless excitation segment, i.e., the microstrip line, refers to a miniaturized and planar radio frequency transmission line structure used on the multi-mode wireless communication main board module to connect each wireless communication module and the waveguide antenna module. The microstrip line usually consists of a metal conductor, a dielectric substrate, and a ground layer. Its structure is similar to a metal wire on a PCB, but through a specific configuration between the dielectric substrate and the ground layer, it can effectively transmit and guide radio frequency signals, and at the same time has good EMC characteristics and electromagnetic interference control (EMI) characteristics.

[0045] The above waveguide antenna module refers to a component for receiving and transmitting the first signal transmitted by the wireless excitation section. The waveguide structure is adopted inside the waveguide antenna module. The waveguide structure is a high-efficiency transmission path that utilizes the principle of electromagnetic wave propagation in a metal conduit or waveguide to transmit and control radio frequency signals. Different from traditional coaxial cable or microstrip line transmission, the waveguide structure can carry higher-power signals, reduce signal loss, and is particularly suitable for the transmission of high-frequency band signals and communication scenarios that require high isolation and directivity.

[0046] Figure 2 It is a schematic diagram of a waveguide structure according to an embodiment of the present disclosure. As Figure 2 shown, the waveguide cavity and the metal surface layer outside it together constitute the waveguide structure.

[0047] The above target receiving device refers to an external device or system that communicates with the waveguide antenna module. In applications such as intelligent vehicles or the Internet of Things (IoT), the target receiving device can be other vehicles, road infrastructure, mobile communication base stations, satellites, or other intelligent devices. The target receiving device can exchange data with the intelligent antenna system through wireless signals to realize functions such as remote information transmission, positioning, navigation, and secure communication of vehicles.

[0048] Exemplarily, assume that a vehicle needs to send vehicle operation data to a cloud server or receive navigation update information from the server through a 5G network. The 5G wireless communication module in the multi-mode wireless communication main board module will generate a corresponding 5G radio frequency signal. Subsequently, the above 5G radio frequency signal is transmitted to the waveguide antenna module through a microstrip line directly connected to the 5G wireless communication module. After receiving the above 5G radio frequency signal, the waveguide antenna module uses its internal waveguide structure and antenna unit to convert the above radio frequency signal into a signal to be transmitted suitable for transmission in the waveguide antenna. Further, through the antenna module in the waveguide antenna module, the signal to be transmitted is wirelessly transmitted to the target receiving device, for example, the cloud server or the T-Box module of an adjacent vehicle.

[0049] Based on the above steps S11 to S14, by acquiring the first signal generated by the multi-mode wireless communication main board module and using multiple wireless excitation sections to transmit the first signal to the waveguide antenna module, and then using the waveguide antenna module to convert the first signal into a second signal, and finally transmitting the second signal to the target receiving device through multiple antenna modules in the waveguide antenna module, the purpose of improving the integration degree of the communication system and optimizing the signal transmission path is achieved, thereby realizing the technical effects of reducing the hardware cost and improving the signal transmission efficiency, and further solving the technical problems of high hardware cost and low transmission efficiency existing in the signal transmission method provided in the related art.

[0050] The signal transmission method in the embodiments of the present disclosure will be further introduced below.

[0051] Optionally, the antenna module includes: a waveguide feed port, a waveguide cavity, and an antenna radiation port. In step S12, transmitting the first signal to the waveguide antenna module by using a plurality of wireless excitation segments includes:

[0052] Transmitting the first signal to the waveguide feed port corresponding to the wireless excitation segment, and transmitting the first signal to the waveguide cavity through the waveguide feed port, where the waveguide feed port is used for mode conversion of the first signal, and the waveguide cavity is used to connect the waveguide feed port and the antenna radiation port.

[0053] The above-mentioned waveguide feed port refers to the interface part in the waveguide antenna module that is used to receive the radio frequency signal from the multi-mode wireless communication main board module and convert it into a specific mode signal suitable for transmission in the waveguide cavity. The design and function of the waveguide feed port are to achieve signal mode matching and conversion, ensuring that the radio frequency signal can propagate efficiently and with low loss in the waveguide structure. The waveguide feed port usually includes one or more couplers for converting the quasi-transverse electromagnetic wave (TEM) mode signal transmitted by the microstrip line or coaxial line into the transverse electric wave (TE) or transverse magnetic wave (TM) mode signal supported inside the waveguide cavity.

[0054] The above-mentioned waveguide cavity refers to the cavity structure in the waveguide antenna module for signal transmission and mode conversion. Specifically, the waveguide cavity is a metal-structured chamber or channel with a specific geometric shape and size designed inside to support the propagation of electromagnetic waves in it in the TE or TM mode. One end of the waveguide cavity is connected to the waveguide feed port to receive the radio frequency signal from the wireless excitation segment, and the other end is connected to the antenna radiation port to convert the signal into an electromagnetic wave in the air and emit it.

[0055] Exemplarily, the waveguide feed port can be designed as the opening section of the waveguide cavity and connected to the microstrip line through an appropriate matching structure, such as a tapered waveguide or a conical transition, allowing the signal transmitted from the microstrip line to undergo mode conversion before entering the waveguide cavity, ensuring that the signal can propagate efficiently in the cavity in the TE or TM mode supported by the waveguide.

[0056] Based on the above optional embodiment, through the mode conversion function of the waveguide feed port, it can be ensured that when the first signal is transmitted from the microstrip line to the waveguide cavity, the signal mode is adapted to the transmission mode inside the waveguide cavity, so as to be transmitted inside the waveguide cavity with lower loss and more efficient propagation characteristics.

[0057] Optionally, in step S13, converting the first signal into a second signal by using a waveguide antenna module includes:

[0058] Step S131: Electromagnetically coupling the first signal by using a waveguide feed port to obtain a third signal, where the third signal is used to represent an electromagnetic wave signal transmitted in the waveguide antenna module;

[0059] Step S132: Preprocessing the third signal to obtain a second signal.

[0060] The above-mentioned third signal refers to an electromagnetic wave signal that adapts to the internal propagation environment of the waveguide antenna module after electromagnetic coupling conversion through the waveguide feed port, and is usually a TE or TM mode signal. In the embodiments of the present disclosure, the third signal is a TE10 mode. As one of the TE modes, the TE10 mode is one of the most common propagation modes in the waveguide system, and has the characteristics of uniform electric field in the broadside direction of the waveguide and oscillating electric field in the narrow side direction, so that the signal of the TE10 mode can propagate inside the waveguide antenna module with the minimum loss and the most optimized efficiency.

[0061] Exemplarily, when the first signal is transmitted from the wireless excitation section to the waveguide feed port, the probe coupler or slot coupler inside the waveguide feed port converts the quasi-TEM mode signal transmitted in the wireless excitation section into a TE10 mode signal supported inside the waveguide cavity through electromagnetic coupling, that is, the third signal.

[0062] Based on the above optional embodiment, by performing electromagnetic coupling conversion on the first signal through the probe coupler or slot coupler inside the waveguide feed port, the quasi-TEM mode signal transmitted in the wireless excitation section can be converted into a TE mode signal that adapts to the internal propagation environment of the waveguide antenna module, thereby reducing the loss of the signal during the transmission process from the wireless excitation section to the waveguide cavity and improving the transmission efficiency of the signal.

[0063] Optionally, in step S132, preprocessing the third signal to obtain a second signal includes:

[0064] Step S1321: Filtering the third signal to obtain a fourth signal, where the frequency of the fourth signal is greater than the waveguide cut-off frequency, and the waveguide cut-off frequency is used to represent the signal transmission boundary frequency in the waveguide cavity;

[0065] Step S1322: Adjusting the phase of the fourth signal according to the phase synchronization rule to obtain a second signal.

[0066] The above waveguide cut-off frequency refers to the lowest frequency at which electromagnetic waves can effectively propagate in the waveguide cavity. In waveguide theory, each propagation mode has a specific cut-off frequency, which is mainly determined by the geometric dimensions of the waveguide structure, i.e., the dimensions of the wide side and the narrow side of the waveguide structure. When the frequency of the electromagnetic wave is lower than the cut-off frequency, the signal energy will be significantly attenuated because it cannot overcome the electromagnetic field barrier inside the waveguide and may even fail to propagate.

[0067] Exemplarily, the waveguide cut-off frequency can be calculated using formula (1):

[0068]

[0069] In formula (1), f is the waveguide cut-off frequency, m and n respectively represent the number of half-waves of the TE mode signal distributed in the x and y directions, and m and n cannot be 0 at the same time; a is the length of the wide side of the waveguide structure; b is the length of the narrow side of the waveguide structure.

[0070] For the TE mode signal, when m = 1 and n = 0, the waveguide cut-off frequency f of the TE mode signal can be calculated using formula (2) TE :

[0071]

[0072] Exemplarily, assume that a waveguide structure suitable for the 5G millimeter-wave band needs to be designed. Since the 5G millimeter-wave band ranges from 24 GHz to 100 GHz, its waveguide cut-off frequency should be set to 24 GHz to ensure that the waveguide cavity can effectively transmit signals above 24 GHz and filter out signal components below 24 GHz, including possible interference signals. According to formula (2), when the waveguide cut-off frequency f TE is 24 GHz, the length of the wide side of the corresponding waveguide structure should be set to 13.1 mm, and at the same time, the width of its narrow side should be set to less than 13.1 mm.

[0073] Furthermore, for the radio frequency signals emitted by different wireless modules, corresponding waveguide structures can be set according to their frequency bands. Since the inside of the waveguide antenna module is a rectangular cavity that is mutually isolated and completely isolated from each other, the waveguide structures of different frequency bands can be isolated by metal partitions to prevent the electromagnetic fields between different cavities from penetrating each other, thereby reducing the mutual coupling interference between signals.

[0074] The above-mentioned phase synchronization rule refers to the phase relationship criterion that signals must follow among various channels or antenna elements in a multi-channel signal processing system, especially in an intelligent antenna system, in order to achieve functions such as beamforming, spatial diversity reception, and phased array antenna operation. The phase synchronization rule ensures that when signals reach different radiators of the antenna array, they have a preset or calculated phase difference, so as to be able to synthesize a beam with specific directivity, or effectively combine signals from different angles at the receiving end to improve signal quality or anti-interference ability.

[0075] Based on the above optional embodiments, by filtering the third signal, a fourth signal adapted for waveguide cavity transmission is obtained, and then the phase of the fourth signal is adjusted according to the phase synchronization rule to obtain the second signal, which can improve the anti-interference ability and transmission efficiency during signal transmission.

[0076] Optionally, in step S14, transmitting the second signal to the target receiving device through multiple antenna modules in the waveguide antenna module includes:

[0077] Step S141, obtaining the polarization type information of the target receiving device, where the polarization type information is used to represent the vibration direction of the electric field vector when the target receiving device receives the second signal;

[0078] Step S142, determining the target polarization mode of the second signal according to the polarization type information of the target receiving device, where the target polarization mode is used to represent the electromagnetic field direction and rotation mode corresponding to the second signal;

[0079] Step S143, controlling the antenna radiation ports corresponding to the antenna modules to transmit the second signal to the target receiving device according to the target polarization mode.

[0080] The above-mentioned polarization type information refers to the type of the vibration direction of the signal electric field vector required when the target receiving device can effectively receive the signal. In the transmission of electromagnetic waves, the vibration direction of the electric field vector determines the polarization state of the signal. Common polarization types include linear polarization type, circular polarization type, and elliptical polarization type. Among them, the linear polarization type is divided into vertical polarization type and horizontal polarization type; circular polarization is divided into right-hand circular polarization (RHCP) type and left-hand circular polarization (LHCP) type; the elliptical polarization type is a transitional state between the circular polarization type and the linear polarization type, and the vibration trajectory of its electric field vector is an ellipse.

[0081] The above-mentioned antenna radiation port refers to the physical port in the antenna module for transmitting the second signal into free space. In the waveguide antenna module, the antenna radiation port can be one of specific antenna forms such as an internal waveguide antenna, a microstrip antenna, a slot antenna, a horn antenna, etc.

[0082] Exemplarily, if the polarization type of the target receiving device is the RHCP type, the target polarization mode of the second signal should be set to the RHCP mode. Further, if an internal waveguide antenna is adopted, the target polarization mode of the second signal can be set to the RHCP mode by introducing a quarter-wavelength phase shifter or a polarization rotator at the antenna radiation port. If a microstrip antenna or a slot antenna is adopted, polarization rotation can be achieved through a specific feed network design. Once the antenna radiation port is adjusted according to the target polarization mode, the second signal will be transmitted into free space in the target polarization form, ensuring that the signal can be effectively received by the target receiving device.

[0083] Based on the above optional embodiments, by dynamically adjusting the polarization mode of the antenna radiation port, it can be ensured that the waveguide antenna module can adaptively communicate with target receiving devices of different polarization types efficiently.

[0084] Optionally, the module types of multiple antenna modules include at least one of the following: multi-band communication antenna type, navigation and positioning antenna type, wireless local area network antenna type, Bluetooth low energy antenna type, ultra-wideband communication antenna type, satellite communication antenna type.

[0085] The above-mentioned multi-band communication antenna type refers to an antenna design that can support multiple wireless communication bands simultaneously in one antenna structure. The multi-band communication antenna type can usually cover multiple communication bands from low frequency to high frequency, such as the 700 MHz to 6 GHz band, and even higher to the millimeter wave band, such as 24 GHz to 100 GHz. Specifically, the multi-band communication antenna can support mobile communication standards including but not limited to 4G, 5G, etc., and can provide good radiation efficiency and directivity on different bands, meeting the requirements of modern communication devices for multi-band and multi-mode compatibility.

[0086] The above-mentioned navigation and positioning antenna type refers to an antenna for receiving GNSS signals. The frequency bands that the navigation and positioning antenna usually needs to cover include 1164 MHz to 1610 MHz. In the embodiments of the present disclosure, the navigation and positioning antenna module can be compatible with all navigation satellite frequency bands.

[0087] The above-mentioned wireless local area network antenna type refers to an antenna for supporting wireless local area network communication, which is mainly applicable to various frequency bands of the IEEE802.11 standard (usually referred to as Wi-Fi), including but not limited to the 2.4 GHz, 5 GHz, and 6 GHz bands.

[0088] The above Bluetooth Low Energy antenna type refers to the antenna used to support Bluetooth Low Energy (BLE). BLE is a short-range wireless communication technology aimed at reducing power consumption and cost while maintaining compatibility with traditional Bluetooth. BLE typically operates in the 2.4 GHz frequency band.

[0089] The above Ultra-Wideband (UWB) communication antenna type refers to the antenna used to support UWB communication technology. UWB is a high-bandwidth, low-power wireless communication technology, and its operating frequency band is usually between 3.1 GHz and 10.6 GHz.

[0090] The above satellite communication antenna type refers to the antenna designed for specific satellite communication systems and application requirements. Satellite communication antennas can effectively receive and transmit satellite signals and usually operate in the following frequency bands:

[0091] 1) L band: 1 - 2 GHz, which is usually used for the civilian frequency band of global navigation satellite systems (such as GPS, GLONASS, Galileo, and Beidou satellites), as well as some low-frequency satellite communications. Due to the relatively long wavelength of the L band, the antenna design is relatively simple, and it is less sensitive to atmospheric attenuation and obstacles. Therefore, it is widely used in mobile communication and location services.

[0092] 2) S band: 2 - 4 GHz, which is mainly applied to radar systems, satellite communication services, and communication links of deep space probes. The S band provides a higher data transmission rate than the L band, but at the same time, it poses higher requirements for the size and directivity of the antenna.

[0093] 3) C band: 4 - 8 GHz, which is mainly used for geostationary orbit satellite communication, as well as in maritime, aviation, and ground fixed communication stations.

[0094] 4) Ku band: 12 - 18 GHz, which is a commonly used frequency band for satellite communication, including Internet access, broadcasting, and two-way communication.

[0095] 5) Ka band: 26.5 - 40 GHz, which is used for high-bandwidth, high-rate satellite communication, including broadband Internet and high-definition video transmission.

[0096] Based on the above optional embodiments, integrating multiple antenna modules into a waveguide antenna module can solve problems such as high hardware cost and low transmission efficiency in traditional designs, and also provides a feasible solution for the integration and upgrade of future wireless communication technologies.

[0097] Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by means of software plus a necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is a better implementation. Based on such an understanding, the technical solution of the present disclosure, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. The computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes several instructions for causing a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods of the various embodiments of the present disclosure.

[0098] In the embodiments of the present disclosure, a signal processing system is further provided. This system is used to implement the above embodiments and preferred implementation manners, and those that have been described will not be repeated. As used below, the term "module" can be a combination of software and / or hardware that can achieve a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware is also possible and contemplated.

[0099] Figure 3 is a schematic diagram of a signal transmission system according to one embodiment of the present disclosure. As Figure 3 shown, in the embodiments of the present disclosure, a wireless module located on a printed circuit board is connected to a waveguide feed port through a wireless excitation section.

[0100] Figure 4 is a schematic diagram of a waveguide antenna module according to one embodiment of the present disclosure. As Figure 4 shown, the waveguide antenna module includes multiple antenna modules: a multi-band communication antenna module, a navigation and positioning antenna module, a wireless local area network antenna module, a Bluetooth low energy antenna module, an ultra-wideband communication antenna module, and a satellite communication antenna module. Taking the multi-band communication antenna module as an example, this antenna module includes a waveguide feed port, a waveguide cavity, and an antenna radiation port.

[0101] Figure 5 is another schematic diagram of a waveguide antenna module according to one embodiment of the present disclosure. As Figure 5 shown, the waveguide antenna module includes multiple antenna modules: a multi-band communication antenna module, a navigation and positioning antenna module, a wireless local area network antenna module, a Bluetooth low energy antenna module, an ultra-wideband communication antenna module, and a satellite communication antenna module. Taking the satellite communication antenna module as an example, this antenna module includes multiple band antenna radiation ports, namely: a band 1 antenna radiation port, a band 2 antenna radiation port, a band 3 antenna radiation port, a band 4 antenna radiation port, and a band 5 antenna radiation port.

[0102] Exemplarily, the antenna radiation port of frequency band 1 can be the antenna radiation port of the L band, the antenna radiation port of frequency band 2 can be the antenna radiation port of the S band, the antenna radiation port of frequency band 3 can be the antenna radiation port of the C band, the antenna radiation port of frequency band 4 can be the antenna radiation port of the Ka band, and the antenna radiation port of frequency band 5 can be the antenna radiation port of the Ku band.

[0103] Exemplarily, in the embodiments of the present disclosure, the layout of the antenna module in the waveguide antenna module can be adjusted according to different technical requirements and application scenarios, allowing new functions to be added or old modules to be replaced without changing the main structure of the waveguide antenna module, thereby simplifying the device upgrade and maintenance process.

[0104] Figure 6 is a structural block diagram of a signal processing system according to an embodiment of the present disclosure, as Figure 6 shown, the system includes:

[0105] A multi-mode wireless communication main board module 601 for generating a first signal, where the first signal is generated by multiple wireless modules in the multi-mode wireless communication main board module;

[0106] A wireless excitation section 602 for transmitting the first signal to the waveguide antenna module;

[0107] A waveguide antenna module 603 for converting the first signal into a second signal and transmitting the second signal to a target receiving device, where the second signal is used to represent the signal to be transmitted in the waveguide antenna module.

[0108] Optionally, the antenna module includes: a waveguide feed port, a waveguide cavity, and an antenna radiation port. The wireless excitation section 602 is further configured to: transmit the first signal to the waveguide feed port corresponding to the wireless excitation section, and transmit the first signal to the waveguide cavity through the waveguide feed port, where the waveguide feed port is used for mode conversion of the first signal, and the waveguide cavity is used to connect the waveguide feed port and the antenna radiation port.

[0109] Optionally, the waveguide antenna module 603 is further configured to: perform electromagnetic coupling on the first signal using the waveguide feed port to obtain a third signal, where the third signal is used to represent the electromagnetic wave signal transmitted in the waveguide antenna module; preprocess the third signal to obtain the second signal.

[0110] Optionally, the waveguide antenna module 603 is further configured to: perform filtering processing on the third signal to obtain a fourth signal, where the frequency of the fourth signal is greater than the waveguide cut-off frequency, and the waveguide cut-off frequency is used to represent the signal transmission boundary frequency in the waveguide cavity; perform phase adjustment on the fourth signal according to the phase synchronization rule to obtain the second signal.

[0111] Optionally, the waveguide antenna module 603 is further configured to: obtain polarization type information of a target receiving device, where the polarization type information is used to represent the vibration direction of the electric field vector when the target receiving device receives a second signal; determine a target polarization mode of the second signal according to the polarization type information of the target receiving device, where the target polarization mode is used to represent the electromagnetic field direction and rotation mode corresponding to the second signal; control the antenna radiation ports corresponding to the antenna module to transmit the second signal to the target receiving device according to the target polarization mode.

[0112] It should be noted that the above-mentioned various modules can be implemented by software or hardware. For the latter, it can be implemented in the following ways, but not limited to this: the above-mentioned modules are all located in the same processor; or, the above-mentioned various modules are respectively located in different processors in any combination form.

[0113] According to another aspect of the embodiments of the present disclosure, a vehicle is further provided, including: a processor; a memory for storing instructions executable by the processor; wherein, the processor is configured to execute the instructions to implement the signal transmission method in the embodiments of the present disclosure.

[0114] Optionally, in this embodiment, the above-mentioned processor can be set to execute the following steps through a computer program:

[0115] S1, obtain a first signal generated by a multi-mode wireless communication main board module, where the first signal is used to represent radio frequency signals generated by multiple wireless modules in the multi-mode wireless communication main board;

[0116] S2, use multiple wireless excitation segments to transmit the first signal to the waveguide antenna module, where the multiple wireless excitation segments are used to connect multiple wireless modules in the multi-mode wireless communication main board and the waveguide antenna module;

[0117] S3, use the waveguide antenna module to convert the first signal into a second signal, where the second signal is used to represent the signal to be transmitted in the waveguide antenna module;

[0118] S4, transmit the second signal to the target receiving device through multiple antenna modules in the waveguide antenna module.

[0119] According to another aspect of the embodiments of the present disclosure, a computer-readable storage medium is further provided. The computer-readable storage medium includes a stored executable program, where when the executable program runs, it controls the device where the storage medium is located to execute the signal transmission method in the embodiments of the present disclosure.

[0120] Optionally, in this embodiment, the above-mentioned storage medium can be set to store a computer program for executing the following steps:

[0121] S1. Obtain a first signal generated by a multi-mode wireless communication main board module, where the first signal is used to represent radio frequency signals generated by multiple wireless modules in the multi-mode wireless communication main board;

[0122] S2. Transmit the first signal to a waveguide antenna module by using multiple wireless excitation segments, where the multiple wireless excitation segments are used to connect multiple wireless modules in the multi-mode wireless communication main board and the waveguide antenna module;

[0123] S3. Convert the first signal into a second signal by using the waveguide antenna module, where the second signal is used to represent a signal to be transmitted in the waveguide antenna module;

[0124] S4. Transmit the second signal to a target receiving device through multiple antenna modules in the waveguide antenna module.

[0125] Optionally, in this embodiment, the above storage medium may include, but is not limited to: various media such as a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk, or an optical disc that can store computer programs.

[0126] According to another aspect of the embodiments of the present disclosure, there is also provided a computer program product, where the computer program product includes computer instructions, and when the computer instructions are executed by a processor, the signal transmission method in the embodiments of the present disclosure is implemented.

[0127] Optionally, in this embodiment, the above computer program product may be set to a computer program that executes the following steps:

[0128] S1. Obtain a first signal generated by a multi-mode wireless communication main board module, where the first signal is used to represent radio frequency signals generated by multiple wireless modules in the multi-mode wireless communication main board;

[0129] S2. Transmit the first signal to a waveguide antenna module by using multiple wireless excitation segments, where the multiple wireless excitation segments are used to connect multiple wireless modules in the multi-mode wireless communication main board and the waveguide antenna module;

[0130] S3. Convert the first signal into a second signal by using the waveguide antenna module, where the second signal is used to represent a signal to be transmitted in the waveguide antenna module;

[0131] S4. Transmit the second signal to a target receiving device through multiple antenna modules in the waveguide antenna module.

[0132] The serial numbers of the above embodiments of the present disclosure are only for description and do not represent the advantages and disadvantages of the embodiments.

[0133] In the above embodiments of the present disclosure, the descriptions of the various embodiments each have their own emphases. For parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0134] In several embodiments provided by the present disclosure, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are merely illustrative. For example, the division of units can be a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection to each other can be through some interfaces. The indirect coupling or communication connection of units or modules can be in an electrical or other form.

[0135] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0136] In addition, in each embodiment of the present disclosure, the functional units can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

[0137] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present disclosure, in essence, or the part that contributes to the prior art, or all or part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods in the various embodiments of the present disclosure. The foregoing storage medium includes: USB flash drives, read-only memories (ROMs), random access memories (RAMs), mobile hard disks, magnetic disks, or optical discs and other various media that can store program codes.

[0138] The above is only the preferred embodiment of the present disclosure. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present disclosure, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present disclosure.

Claims

1. A signal transmission method, applied to a signal transmission system, the signal transmission system comprising: The multi-mode wireless communication mainboard module, the wireless excitation section and the waveguide antenna module are characterized by comprising: Acquire a first signal generated by the multi-mode wireless communication mainboard module, wherein the first signal is used to represent radio frequency signals generated by multiple wireless modules in the multi-mode wireless communication mainboard; The first signal is transmitted to the waveguide antenna module by using a plurality of wireless excitation segments, wherein the plurality of wireless excitation segments are used to connect a plurality of wireless modules in the multi-mode wireless communication mainboard and the waveguide antenna module; Using the waveguide antenna module to convert the first signal into a second signal, wherein the second signal is used to represent the signal to be transmitted in the waveguide antenna module; The second signal is transmitted to a target receiving device through a plurality of antenna modules in the waveguide antenna module.

2. The signal transmission method according to claim 1, characterized in that: The antenna module includes: a waveguide feeding port, a waveguide cavity and an antenna radiation port, and using the multiple wireless excitation segments to transmit the first signal to the waveguide antenna module includes: The first signal is transmitted to the waveguide feeding port corresponding to the wireless excitation segment, and the first signal is transmitted to the waveguide cavity through the waveguide feeding port, wherein the waveguide feeding port is used to perform mode conversion on the first signal, and the waveguide cavity is used to connect the waveguide feeding port and the antenna radiation port.

3. The signal transmission method according to claim 2, characterized in that: Using the waveguide antenna module to convert the first signal into the second signal includes: Performing electromagnetic coupling on the first signal by using the waveguide feeding port to obtain a third signal, wherein the third signal is used to represent the electromagnetic wave signal transmitted in the waveguide antenna module; The third signal is preprocessed to obtain the second signal.

4. The signal transmission method according to claim 3, characterized in that: Preprocessing the third signal to obtain the second signal includes: Performing filtering processing on the third signal to obtain a fourth signal, wherein the frequency of the fourth signal is greater than a waveguide cutoff frequency, and the waveguide cutoff frequency is used to represent a signal transmission boundary frequency in the waveguide cavity; The fourth signal is phase-adjusted according to a phase synchronization rule to obtain the second signal.

5. The signal transmission method according to claim 3, characterized in that: Transmitting the second signal to the target receiving device through the multiple antenna modules in the waveguide antenna module includes: Acquire polarization type information of the target receiving device, wherein the polarization type information is used to indicate a vibration direction of an electric field vector when the target receiving device receives the second signal; Determining a target polarization mode of the second signal according to the polarization type information of the target receiving device, wherein the target polarization mode is used to indicate an electromagnetic field direction and a rotation mode corresponding to the second signal; The antenna radiation port corresponding to the antenna module is controlled to transmit the second signal to the target receiving device according to the target polarization mode.

6. The signal transmission method according to claim 1, characterized in that: The module types of the multiple antenna modules include at least one of the following: a multi-band communication antenna type, a navigation positioning antenna type, a wireless local area network antenna type, a Bluetooth low energy antenna type, an ultra-wideband communication antenna type, and a satellite communication antenna type.

7. A signal transmission system, characterized in that: include: A multi-mode wireless communication mainboard module, configured to generate a first signal, wherein the first signal is generated by a plurality of wireless modules in the multi-mode wireless communication mainboard module; A wireless excitation section, used for transmitting the first signal to a waveguide antenna module; The waveguide antenna module is used to convert the first signal into a second signal and transmit the second signal to a target receiving device, wherein the second signal is used to represent the signal to be transmitted in the waveguide antenna module.

8. A vehicle, characterized in that: include: processor; a memory for storing instructions executable by the processor; The processor is configured to execute the instructions to implement the signal transmission method according to any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored executable program, wherein when the executable program is executed, the device where the storage medium is located is controlled to execute the signal transmission method according to any one of claims 1 to 6.

10. A computer program product, characterized in that The computer program product comprises computer instructions, which, when executed by a processor, implement the signal transmission method described in any one of claims 1 to 6.

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