Communication device, method, storage medium and vehicle-mounted unit

Abstract

This application provides a communication device, method, storage medium, and vehicle-mounted unit, relating to the field of vehicle-mounted communication technology. The device includes: a main control module, a first communication module, and a second communication module; the main control module is communicatively connected to both the first and second communication modules; the main antennas of the first and second communication modules share a first antenna interface circuit; the diversity antennas of the first and second communication modules share a second antenna interface circuit; wherein the first communication module communicates with the base station at high speed through its corresponding main and diversity antennas; the second communication module communicates with the base station at low speed through its corresponding main and diversity antennas; the main control module switches between high-speed and low-speed communication through the first and second antenna interface circuits. It is compatible with both high-speed and low-speed antenna designs, has a simple circuit design, effectively reduces device size, facilitates device installation, and is highly practical.

Description

Technical Field

[0001] This application relates to the field of vehicle communication technology, and more specifically, to a communication device, method, storage medium, and vehicle unit. Background Technology

[0002] V2X (Vehicle-to-Everything) devices enable vehicle-to-everything communication. They allow communication between vehicles, between vehicles and base stations, and between base stations, providing real-time traffic conditions, road information, pedestrian information, and other traffic data. This improves driving safety, reduces congestion, increases traffic efficiency, and provides in-vehicle entertainment. V2X devices and similar communication devices contain two basic communication interfaces: the PC5 interface and the uu interface. The PC5 interface facilitates communication between two V2X devices, while the uu interface enables communication between the V2X device and the public network.

[0003] Currently, the uu interface of V2X devices is generally implemented using a common 4G LTE module, which communicates with the main controller via a USB 2.0 interface. When the device has higher requirements for internet speed or network latency, the uu interface can be implemented using a 5G NR module. That is, the hardware is compatible with both 4G and 5G communication modules. However, the device needs to bring out nine antennas at the same time when it is compatible, which will increase the size of the device and also make antenna installation difficult. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide a communication device, method, storage medium, and vehicle unit. By setting a first antenna interface circuit and a second antenna interface circuit inside the communication device (e.g., a V2X device), the first communication module (e.g., a 5G communication module) and the second communication module (4G communication module) share some antenna interfaces, which is compatible with 4G LTE antenna and 5G NR antenna designs. This reduces the total number of external antennas of the device. In one specific embodiment, it can be reduced from nine antennas to seven antennas. The circuit design is simple, the device size is reduced, and the device installation is convenient, thereby solving the above-mentioned technical problems.

[0005] In a first aspect, embodiments of this application provide a communication device, the device comprising: a main control module, a first communication module, and a second communication module; the main control module is communicatively connected to the first communication module and the second communication module respectively; the main antenna of the first communication module and the main antenna of the second communication module share a first antenna interface circuit; the diversity antenna of the first communication module and the diversity antenna of the second communication module share a second antenna interface circuit; wherein, the first communication module performs high-speed communication with a base station through corresponding main antennas and diversity antennas; the second communication module performs low-speed communication with the base station through corresponding main antennas and diversity antennas; the main control module switches between high-speed communication and low-speed communication through the first antenna interface circuit and the second antenna interface circuit.

[0006] In the above implementation process, by setting a first antenna interface circuit and a second antenna interface circuit inside the communication device so that the first communication module and the second communication module share the first antenna interface circuit and the second antenna interface circuit, it is compatible with high-speed antenna and low-speed antenna design. This can reduce the total number of external antennas of the device accordingly. The circuit design is simple, effectively reducing the size of the device, facilitating device installation, and making it highly practical.

[0007] Optionally, a second resistor is provided on the main antenna of the first communication module, and a fourth resistor is provided on the diversity antenna of the first communication module; a first resistor is provided on the main antenna of the second communication module, and a third resistor is provided on the diversity antenna of the second communication module.

[0008] In the above implementation process, the main antenna signal is received and transmitted, and the auxiliary signal is received and transmitted, by setting resistors on the main antenna and diversity antenna of the first and second communication modules. The circuit design is simple and the size of the device is effectively reduced.

[0009] Optionally, one end of the first and second resistors are soldered together and connected to the first antenna interface to form the first antenna interface circuit, and one end of the third and fourth resistors are soldered together and connected to the second antenna interface to form the second antenna interface circuit; the first resistor is connected to the main antenna of the second communication module, and the third resistor is connected to the diversity antenna of the second communication module; or, the second resistor is connected to the main antenna of the first communication module, and the fourth resistor is connected to the diversity antenna of the first communication module. Wherein, when the other ends of the first and third resistors are soldered together, the main control module performs low-speed communication; when the other ends of the second and fourth resistors are soldered together, the main control module performs high-speed communication.

[0010] In the above implementation process, by setting a first antenna interface circuit composed of a first resistor and a second resistor, and a second antenna interface circuit composed of a third resistor and a fourth resistor inside the communication device, the first communication module and the second communication module share the first antenna interface circuit and the second antenna interface circuit, which is compatible with high-speed antenna and low-speed antenna design. It can quickly realize the selection of two communication rates, and the circuit design is simple, low-cost, and highly practical.

[0011] Optionally, the first resistor, the second resistor, the third resistor, and the fourth resistor are zero-resistance resistors.

[0012] In the above implementation process, ordinary zero-ohm resistors are used, so that the first, second, third and fourth resistors are directly connected through a wire when receiving signals during communication. Compared with resistors with resistance, this greatly reduces unnecessary signal attenuation and improves the quality of communication signals.

[0013] Optionally, one end of the second resistor is connected to the output matching network of the first communication module, and one end of the fourth resistor is connected to the output matching network of the first communication module; one end of the first resistor is connected to the output matching network of the second communication module, and one end of the third resistor is connected to the output matching network of the second communication module; wherein, the output matching network is used to optimize the impedance between the first communication module and the resistor, or to optimize the impedance between the second communication module and the resistor.

[0014] In the above implementation process, the addition of the shared first antenna interface circuit and second antenna interface circuit caused the original impedance mismatch. By adding an output matching network, the newly added impedance was transformed into a new impedance circuit, enabling the circuit to achieve conjugate matching, reducing the signal attenuation caused by impedance mismatch, and improving the quality of communication signals.

[0015] Optionally, the output matching network includes: a π-type matching network composed of a series capacitor, a first inductor, and a second inductor; one end of the series capacitor is connected in series with one end of the first inductor, and the other end of the series capacitor is connected in series with one end of the second inductor; the other end of the first inductor is grounded, and the other end of the second inductor is grounded.

[0016] In the above implementation process, the addition of a π-type matching network minimizes the signal attenuation of the antenna path, thereby avoiding the signal attenuation problem caused by impedance mismatch in the antenna path after adopting a common pad design. The π-type impedance matching network minimizes this part of the signal attenuation, thus improving the quality of the communication signal.

[0017] Optionally, the output matching network includes: a T-type matching network consisting of a parallel inductor, a first capacitor, and a second capacitor; the first capacitor and the second capacitor are connected in series; one end of the parallel inductor is grounded, and the other end is connected to the common terminal of the series connection of the first capacitor and the second capacitor.

[0018] In the above implementation process, the addition of a T-type matching network minimizes the signal attenuation of the antenna path, thereby avoiding the signal attenuation problem caused by impedance mismatch in the antenna path after adopting a common pad design. The T-type impedance matching network minimizes this part of the signal attenuation, thus improving the quality of the communication signal.

[0019] Optionally, the device further includes: a V2X module; the V2X module is communicatively connected to the main control module; the V2X module transmits and receives signals through a V2X main antenna and a V2X auxiliary antenna to perform V2X communication.

[0020] In the above implementation process, the addition of V2X modules enables the communication device to achieve vehicle-to-vehicle communication, vehicle-to-infrastructure communication, and vehicle-to-pedestrian communication while being compatible with both high-speed and low-speed communication modes, thereby improving the flexibility and practicality of the communication device.

[0021] Optionally, the device further includes: a GPS module; the GPS module is communicatively connected to the main control module; the GPS module transmits and receives signals through a GPS antenna, generates location information, and transmits it to the main control module.

[0022] In the above implementation process, the addition of a GPS module enables the communication device to obtain accurate satellite positioning information such as spatial location in real time while being compatible with both high-speed and low-speed communication modes, thereby improving the flexibility and practicality of the communication device.

[0023] Secondly, embodiments of this application provide a communication method applied to any of the aforementioned devices. The device includes: a main control module, a first communication module, and a second communication module; the main control module is communicatively connected to both the first communication module and the second communication module; the main antenna of the first communication module and the main antenna of the second communication module share a first antenna interface circuit; the diversity antenna of the first communication module and the diversity antenna of the second communication module share a second antenna interface circuit; the method includes: high-speed communication with a base station via the main antenna and diversity antenna of the first communication module; low-speed communication with the base station via the main antenna and diversity antenna of the second communication module; and switching the corresponding communication mode between high-speed and low-speed communication via the first antenna interface circuit and the second shared antenna interface.

[0024] Thirdly, embodiments of this application also provide an electronic device, including: a processor and a memory, wherein the memory stores machine-readable instructions executable by the processor, and when the electronic device is running, the machine-readable instructions are executed by the processor to perform the steps of the above-described method.

[0025] Fourthly, embodiments of this application provide a computer-readable storage medium storing a computer program, which, when executed by a processor, performs the steps of the above-described method.

[0026] Fifthly, embodiments of this application provide a vehicle-mounted unit, which includes any of the communication devices described above.

[0027] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of an existing V2X device;

[0030] Figure 2 This application provides a schematic diagram of the module functions of a communication device according to an embodiment of the present application.

[0031] Figure 3 An example circuit module diagram of a communication device provided in an embodiment of this application;

[0032] Figure 4 A flowchart illustrating the communication method provided in the embodiments of this application;

[0033] Figure 5 A block diagram illustrating an electronic device providing a communication method according to an embodiment of this application.

[0034] Icons: 01-Communication device; 10-Main control module; 11-First communication module; 12-Second communication module; 13-First antenna interface circuit; 14-Second antenna interface circuit; 300-Electronic device; 311-Memory; 312-Memory controller; 313-Processor; 314-Peripheral interface; 315-Input / output unit; 316-Display unit. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0036] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. The terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. The terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0037] Before introducing the embodiments of this application, a brief introduction to the technical concepts involved in this application will be given first.

[0038] V2X equipment: As a basic hardware unit in the vehicle-to-everything (V2X) field, it provides communication between vehicles, vehicles-roads, and vehicles-cloud. V2X equipment includes two basic communication interfaces: the PC5 interface and the uu interface. The PC5 interface is generally implemented by a V2X module to facilitate communication between two V2X devices. The uu interface is generally implemented by a regular communication module to facilitate communication between the V2X device and the public network. The GPS component consists of an external GPS antenna and a built-in GPS module, providing time synchronization and location information for the V2X device. Specifically, the PC5 interface is the communication interface between terminals, i.e., a short-range direct communication interface between vehicles, people, and road infrastructure. The uu interface is the most important interface in the WCDMA system. User Equipment (UE) accesses the fixed network portion of the WCDMA system through the uu interface. The user plane of the uu interface mainly transmits user data, while the control plane transmits relevant signaling, establishes, reconfigures, and releases various 3G mobile communication radio bearer services. The uu interface is the interface between the UE and the Node B.

[0039] The inventors of this application have noted that, Figure 1 As shown, existing V2X devices typically use a standard 4G LTE module for the uu interface, with the LTE module communicating with the main controller via a USB 2.0 interface. When the device has higher requirements for internet speed or network latency, the uu interface can be implemented using a 5G NR module. The hardware can be compatible with both 4G and 5G communication modules. Meanwhile, existing V2X devices typically use a 4G LTE module for the uu interface communication module, only selecting a 5G NR module when high bandwidth and low latency are required. The hardware design integrates 4G and 5G communication modules onto a single board to accommodate different application scenarios. However, due to… Figure 1 Each module in the device has an independent antenna, which leads to a large number of antennas, a large device size, and difficulties in antenna installation. Therefore, for V2X devices and similar communication devices, the uu interface, when simultaneously compatible with 4G and 5G communication modules, has too many antenna interfaces, resulting in a large device size. This can be addressed by optimizing the internal hardware design of the device and adopting a shared 4G / 5G antenna interface to reduce the number of antennas, effectively reducing the device size. The circuit design is simple, reliable, and highly practical. Specifically, this application provides a communication device 01 as described below.

[0040] Please see Figure 2 , Figure 2 This is a schematic diagram illustrating the module functions of a communication device 01 provided in an embodiment of this application. The embodiment of this application will be described in detail below. The device includes: a main control module 10, a first communication module 11, and a second communication module 12. The main control module 10 is communicatively connected to both the first communication module 11 and the second communication module 12. The main antenna of the first communication module 11 and the main antenna of the second communication module 12 share a first antenna interface circuit 13. The diversity antenna of the first communication module 11 and the diversity antenna of the second communication module 12 share a second antenna interface circuit 14.

[0041] The first communication module 11 communicates with the base station at high speed through the corresponding main antenna and diversity antenna; the second communication module 12 communicates with the base station at low speed through the corresponding main antenna and diversity antenna; and the main control module 10 switches between high-speed and low-speed communication through the first antenna interface circuit 13 and the second antenna interface circuit 14.

[0042] For example, the first communication module 11 and the second communication module 12 can be communication modules such as 5G, 4G, 3G, and 2G communication modules, capable of establishing network communication with the base station via an antenna for corresponding 5G, 4G, 3G, and 2G signals. If the first communication module 11 is a 5G communication module for higher-speed communication, then the second communication module 12 can be any one of the 4G, 3G, or 2G communication modules capable of lower-speed communication. The first antenna interface circuit 13 and the second antenna interface circuit 14 can be circuit structures that uniformly receive the main antenna signals of the first communication module 11 and the second communication module 12 into the same input terminal of the communication device, achieving compatibility between the communication functions of the high-speed and low-speed communication modules.

[0043] Optionally, the communication device 01 is described using a V2X device as an example, with the first communication module being a 5G NR module and the second communication module 12 being a 4G LTE module. The 5G NR module communicates with the 5G base station via the 5G_Main / Div and 5G_MIMO1 / 2 antennas, enabling the V2X device to connect to the 5G network for internet access. The 4G LTE module communicates with the 4G base station via the 4G LTE_Main / Div antenna, enabling the V2X device to connect to the 4G network for internet access. Please continue reading. Figure 1 Existing V2X equipment also includes a main control module 10, a GPS module, a V2X module, a 4G LTE module, and a 5G NR module. The main control module 10 communicates and interacts with each functional module, coordinating and controlling the operation of each module. It can be seen that each module has an independent antenna, totaling nine antennas, making it impossible to simultaneously use both a 4G LTE module and a 5G NR module. For example... Figure 3 As shown, 5G_Main is the main antenna of the 5G NR module, responsible for signal transmission and reception, and plays a dominant role among all 5G antennas. 5G_div is the diversity antenna of the 5G NR module, used to receive signals and obtain diversity reception advantages. Similarly, 4G LTE_Main / Div has a similar function to 5G_Main / Div. 5G_MIMO1 / 2 are the 5G MIMO antennas of the 5G NR module, used together with 5G_div in conjunction with the 5G_Main antenna to improve the received data rate and increase throughput.

[0044] Furthermore, the 5G_MIMO1 / 2 antenna interfaces in the 5G communication module and Figure 2The design remains consistent with conventional methods, connecting to the corresponding signal interfaces of the 5G communication module. The 5G_Main signal of the 5G communication module and the LTE_Main signal of the 4G communication module share a common antenna interface 4G_5G_Main (first antenna interface circuit 13), and the 5G_div signal of the 5G communication module and the LTE_div signal of the 4G communication module share a common antenna interface 4G_5G_div (second antenna interface circuit 14). These two shared interfaces enable compatibility between higher-speed 5G communication and lower-speed 4G communication. Specifically, Main is the main antenna for both the 5G and 4G communication modules, responsible for both signal transmission and reception, and thus belongs to the same functional antenna unit. Similarly, Div is the diversity antenna for both the 5G and 4G communication modules, only receiving signals and obtaining diversity gain, and also belongs to the same functional antenna unit. The main antenna and diversity antenna receive signals and data from the base station. The first communication module 11 and the second communication module 12 process the data and forward it to the main control module 10. After receiving the data, the main control module 10 can forward the reply data to the first communication module 11 and the second communication module 12, and the modules then send it to the base station, thereby realizing bidirectional communication between the sender and receiver.

[0045] By setting a first antenna interface circuit 13 and a second antenna interface circuit 14 inside the communication device 01, the first communication module 11 and the second communication module 12 can share the first antenna interface circuit 13 and the second antenna interface circuit 14, which is compatible with high-speed antenna and low-speed antenna design. This can reduce the total number of external antennas of the device from nine to seven. The circuit design is simple, effectively reducing the size of the device, making the device easy to install, and it is highly practical.

[0046] In one embodiment, a second resistor is provided on the main antenna of the first communication module 11 of the communication device 01, and a fourth resistor is provided on the diversity antenna of the first communication module 11; a first resistor is provided on the main antenna of the second communication module 12, and a third resistor is provided on the diversity antenna of the second communication module 12.

[0047] For example, since the PCB traces for the antenna section are required to ensure the signal reaches the receiver directly along a single path, any unnecessary traces in the path will cause signal attenuation. Theoretically, the 4G_5G_Main antenna receiving signal will reach the 4G communication module through the first resistor R1 and the 5G communication module through the second resistor R2. This would result in signal branching and signal attenuation due to unnecessary traces. The main antenna connecting the second communication module 12 (e.g., the 4G communication module path) and the first communication module 11 (e.g., the 5G communication module path) is connected through the first resistor R1 and the second resistor R2. When the system uses the 4G communication module to receive the main signal, the signal reaches resistor R1 and will directly connect to the 4G communication module path through the first resistor R1. The 5G communication module path connected to the left end of resistor R2 will not have any unnecessary branching traces to divert the signal, and therefore will not experience any unnecessary attenuation. Similarly, when the system uses a 4G communication module to receive auxiliary signals, and when the system uses a 5G communication module to receive main and auxiliary signals, the connection principle of the second resistor, the third resistor R3, and the fourth resistor R4 is also the same.

[0048] In the above implementation process, the main antenna signal is received and transmitted, and the auxiliary signal is received and transmitted, by setting resistors on the main antenna and diversity antenna of the first communication module 11 and the second communication module 12. The circuit design is simple and the size of the device is effectively reduced.

[0049] In one embodiment, one end of the first resistor and the second resistor are soldered together and connected to the first antenna interface to form the first antenna interface circuit 13, and one end of the third resistor and the fourth resistor are soldered together and connected to the second antenna interface to form the second antenna interface circuit 14; the first resistor is connected to the main antenna of the second communication module 12, and the third resistor is connected to the diversity antenna of the second communication module 12; or, the second resistor is connected to the main antenna of the first communication module 11, and the fourth resistor is connected to the diversity antenna of the first communication module 11; wherein, when the other ends of the first resistor and the third resistor are soldered together, the main control module 10 performs low-speed communication; when the other ends of the second resistor and the fourth resistor are soldered together, the main control module 10 performs high-speed communication.

[0050] For example, such as Figure 3As shown, the right ends of the first resistor R1 and the second resistor R2, and the right ends of the third resistor R3 and the fourth resistor R4 are designed with a common solder pad, serving as the first antenna interface and the second antenna interface respectively. These together form the first antenna interface circuit 13 and the second antenna interface circuit 14, minimizing signal attenuation caused by branching traces. When the system uses a 4G LTE module, R1 and R3 are soldered, and R2 and R4 are optional soldering. When the system uses a 5G communication module, R2 and R4 are soldered, and R1 and R3 are optional soldering. It should be noted that the system is designed with both 4G and 5G communication modules, but these two functions will not be used simultaneously; the hardware system will use either a 4G communication module or a 5G communication module.

[0051] Specifically, when the communication rate requirement is not high, choosing the low-speed second communication module 12, i.e., the 4G communication module in this embodiment, can solve the cost problem. For some device applications that require high communication rates and low latency, the high-speed first communication module 11, i.e., the 5G communication module in this embodiment, can be selected. For these two scenarios, existing hardware designs generally use two independent devices, each applied to different scenarios; however, this application is hardware-compatible with both scenarios. To avoid a large number of antennas, scenario compatibility can be achieved through resistor selective soldering.

[0052] By setting a first antenna interface circuit 13 composed of a first resistor and a second resistor, and a second antenna interface circuit 14 composed of a third resistor and a fourth resistor inside the communication device 01, the first communication module 11 and the second communication module 12 can share the first antenna interface circuit 13 and the second antenna interface circuit 14 to be compatible with high-speed antenna and low-speed antenna designs. This allows for the rapid selection of two communication rates. The circuit design is simple, low-cost, and highly practical.

[0053] In one embodiment, the first resistor, the second resistor, the third resistor, and the fourth resistor are zero-resistance resistors.

[0054] For example, the first resistor and the second resistor of the first antenna interface circuit 13 and the third resistor and the fourth resistor of the second antenna interface circuit 14 provided inside the communication device 01 are all ordinary zero-ohm resistors. This makes the first resistor, the second resistor, the third resistor and the fourth resistor act as a wire when receiving signals during communication. Compared with resistors with resistance values, this greatly reduces unnecessary signal attenuation and improves the quality of communication signals.

[0055] In one embodiment, one end of the second resistor of the communication device 01 is connected to the output matching network of the first communication module 11, and one end of the fourth resistor is connected to the output matching network of the first communication module 11; one end of the first resistor is connected to the output matching network of the second communication module 12, and one end of the third resistor is connected to the output matching network of the second communication module 12; wherein, the output matching network is used to optimize the impedance between the first communication module 11 and the resistor, or to optimize the impedance between the second communication module 12 and the resistor.

[0056] For example, the output matching network can be a passive network inserted between the source (antenna end) and the load (module end) to make the load impedance conjugate matched with the source impedance. This network is the matching network. The main functions of impedance matching include: maximizing power transfer from the source to the device, from the device to the load, or between devices; improving receiver sensitivity (such as LNA pre-stage matching); reducing the amplitude and phase imbalance of the power distribution network; obtaining ideal gain, output power (PA output matching), efficiency, and dynamic range of the amplifier; and reducing power loss in the feed line.

[0057] Optionally, such as Figure 3 As shown, an output matching network is added at the midpoint between the 5G_Main / Div output terminal of the 5G NR module and the input terminals of the first antenna interface circuit 13 and the second antenna interface circuit 14, i.e., the second resistor R2 and the fourth resistor R4. Similarly, an output matching network is added at the midpoint between the 4G_Main / Div output terminal of the 4G LTE module and the input terminals of the first antenna interface circuit 13 and the second antenna interface circuit 14, i.e., the first resistor R1 and the third resistor R3. This adds corresponding matching networks to the 5G_Main / 5G_Div output of the 5G communication module and the LTE_Main / LTE_Div output of the 4G communication module, thereby optimizing and adjusting the signal attenuation caused by impedance mismatch.

[0058] The addition of the shared first antenna interface circuit 13 and second antenna interface circuit 14 caused the original impedance mismatch. By adding an output matching network, the newly added impedance was transformed into a new impedance circuit, enabling the circuit to achieve conjugate matching, reducing the signal attenuation caused by impedance mismatch, and improving the quality of communication signals.

[0059] In one embodiment, the output matching network includes: a π-type matching network consisting of a series capacitor, a first inductor, and a second inductor; one end of the series capacitor is connected in series with one end of the first inductor, and the other end of the series capacitor is connected in series with one end of the second inductor; the other end of the first inductor is grounded, and the other end of the second inductor is grounded.

[0060] For example, a π-type matching network may include three elements, the positions of which form a "π" shape. For instance, a series branch may include one inductor element L, and a parallel branch may include two capacitor elements C; or a series branch may include one capacitor element C, and a parallel branch may include two inductor elements L. This application embodiment may adopt the latter implementation, namely, a π-type matching network composed of a series capacitor C1 and two inductor elements: the first inductor element L1 and the second inductor element L2. This network can minimize signal attenuation in the antenna path, thereby avoiding the signal attenuation problem caused by impedance mismatch in the antenna path after adopting a common pad design. By minimizing this signal attenuation through the π-type impedance matching network, the quality of the communication signal is improved.

[0061] In one embodiment, the output matching network includes: a T-type matching network consisting of a parallel inductor, a first capacitor, and a second capacitor; the first capacitor and the second capacitor are connected in series; one end of the parallel inductor is grounded, and the other end is connected to the common terminal of the series connection of the first capacitor and the second capacitor.

[0062] For example, a T-type matching network may include three reactive elements arranged in a "T" shape, which can be considered as a series impedance matching network of an L-type matching network. This L-type network can both perform impedance transformation and impedance compensation. The T-type network consists of two series capacitors C1 and C2 and an inductor L1 connected in parallel to the bottom. Specifically, C1 and C2 are connected in series, and L1 is connected to the common point of the series circuit of C1 and C2. This minimizes signal attenuation in the antenna path, thus avoiding the signal attenuation problem caused by impedance mismatch in the antenna path after adopting a common pad design. By minimizing this signal attenuation through the T-type impedance matching network, the quality of the communication signal is improved.

[0063] In one embodiment, the communication device 01 further includes: a V2X module; the V2X module is communicatively connected to the main control module 10; the V2X module transmits and receives signals through the V2X main antenna and the V2X auxiliary antenna to perform V2X communication.

[0064] For example, such as Figure 3As shown, the V2X module transmits and receives signals through the V2X main / auxiliary antennas and interacts with the main control module 10 to achieve V2X communication with other devices. Optionally, the communication device 01 detects traffic conditions around the vehicle and obtains a series of important information such as system load status through the V2X communication module installed on the vehicle. It is precisely because of the information sharing of the vehicle network system that the vehicle can effectively predict the road information ahead and automatically select the optimal driving route to avoid congested road sections. According to different communication objects, V2X communication can be divided into three modes: vehicle to vehicle (V2V) communication, vehicle to infrastructure (V2I) communication, and vehicle to pedestrian (V2P) communication.

[0065] The addition of the V2X module enables the communication device 01 to achieve vehicle-to-vehicle communication, vehicle-to-infrastructure communication, and vehicle-to-pedestrian communication while being compatible with both high-speed and low-speed communication modes, thus improving the flexibility and practicality of the communication device 01.

[0066] In one embodiment, the communication device 01 further includes: a GPS module; the GPS module is communicatively connected to the main control module 10; the GPS module transmits and receives signals through a GPS antenna, generates location information, and transmits it to the main control module 10.

[0067] For example, such as Figure 3 As shown, the GPS module communicates via a GPS antenna that transmits and receives signals. The GPS antenna receives weak satellite signals and sends them to the GPS module, which then extracts synchronization and location information and provides it to the main control unit, thus acquiring time and location information. Optionally, the communication device 01 detects the vehicle's geographical location using a GPS module mounted on the vehicle, utilizes the Global Positioning System (GPS) to obtain the vehicle's real-time location, and guides the vehicle to always travel on the optimal route.

[0068] The addition of a GPS module enables the communication device 01 to acquire accurate satellite positioning information, such as spatial location, in real time while being compatible with both high-speed and low-speed communication modes, thus improving the flexibility and practicality of the communication device 01.

[0069] Please see Figure 4 , Figure 4This is a flowchart of a communication method provided in an embodiment of this application. The method is applied to any of the above-described devices, which include: a main control module 10, a first communication module 11, and a second communication module 12; the main control module 10 is communicatively connected to the first communication module 11 and the second communication module 12 respectively; the main antenna of the first communication module 11 and the main antenna of the second communication module 12 share a first antenna interface circuit 13; the diversity antenna of the first communication module 11 and the diversity antenna of the second communication module 12 share a second antenna interface circuit 14; the method includes steps 100, 120, and 140.

[0070] Step 100: High-speed communication with the base station is established through the main antenna and diversity antenna of the first communication module 11;

[0071] Step 120: Conduct low-speed communication with the base station through the main antenna and diversity antenna of the second communication module 12;

[0072] Step 140: Through the first antenna interface circuit 13 and the second shared antenna interface, the main control module 10 switches the corresponding communication mode to perform high-speed communication or low-speed communication.

[0073] For example, communication device 01 can be a V2X device, the first communication module can be a 5G NR module, and the second communication module 12 can be a 4G LTE module. The 5G NR module communicates with the 5G base station through the 5G_Main / Div and 5G_MIMO1 / 2 antennas, enabling the V2X device to connect to the 5G network for internet access. The 4G LTE module communicates with the 4G base station through the 4G LTE_Main / Div antenna, enabling the V2X device to connect to the 4G network for internet access. 5G_Main is the main antenna of the 5G NR module, responsible for signal transmission and reception, and plays a dominant role among all 5G antennas. 5G_div is the diversity antenna of the 5G NR module, used to receive signals and obtain diversity reception advantages. Similarly, the role of 4GLTE_Main / Div is similar to that of 5G_Main / Div.

[0074] The first communication module 11 and the second communication module 12 receive signals and data from the base station via their main antennas and diversity antennas. The first and second communication modules 11 and 12 process the data and forward it to the main control module 10. Upon receiving the data, the main control module 10 can forward the response data to the first and second communication modules 11 and 12, which then send it to the base station, thus achieving bidirectional communication. The first and second communication modules 11 and 12 share the first antenna interface circuit 13 and the second antenna interface circuit 14, making them compatible with both high-speed and low-speed antenna designs. This allows for rapid selection of the two communication rates, and the circuit design is simple, low-cost, and highly practical.

[0075] Please see Figure 5 , Figure 5 This is a block diagram of an electronic device. The electronic device 300 may include a memory 311, a memory controller 312, a processor 313, a peripheral interface 314, an input / output unit 315, and a display unit 316. Those skilled in the art will understand that... Figure 5 The structure shown is for illustrative purposes only and does not limit the structure of the electronic device 300. For example, the electronic device 300 may also include components that are more... Figure 5 The more or fewer components shown, or having the same Figure 5 The different configurations shown.

[0076] The aforementioned memory 311, memory controller 312, processor 313, peripheral interface 314, input / output unit 315, and display unit 316 are electrically connected directly or indirectly to achieve data transmission or interaction. For example, these components can be electrically connected to each other through one or more communication buses or signal lines. The aforementioned processor 313 is used to execute executable modules stored in the memory.

[0077] The memory 311 can be, but is not limited to, Random Access Memory (RAM), Read Only Memory (ROM), Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), etc. The memory 311 stores programs, and the processor 313 executes these programs upon receiving execution instructions. The methods executed by the electronic device 300, as defined in any embodiment of this application, can be applied to or implemented by the processor 313.

[0078] The aforementioned processor 313 may be an integrated circuit chip with signal processing capabilities. The processor 313 may be a general-purpose processor, including a Central Processing Unit (CPU), a Network Processor (NP), etc.; it may also be a digital signal processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or any conventional processor.

[0079] The peripheral interface 314 described above couples various input / output devices to the processor 313 and the memory 311. In some embodiments, the peripheral interface 314, the processor 313, and the memory controller 312 can be implemented in a single chip. In other instances, they can be implemented by separate chips.

[0080] The input / output unit 315 described above is used to provide user input data. The input / output unit 315 may be, but is not limited to, a mouse and keyboard.

[0081] The aforementioned display unit 316 provides an interactive interface (e.g., a user interface) for the user to reference between the electronic device 300 and the user. In this embodiment, the display unit 316 may be a liquid crystal display (LCD) or a touch screen display. The LCD or touch screen display can show the process of the processor executing the program.

[0082] The electronic device 300 in this embodiment can be used to perform the various steps in the various methods provided in the embodiments of this application.

[0083] Furthermore, embodiments of this application also provide a computer-readable storage medium storing a computer program, which, when executed by a processor, performs the steps described in the above method embodiments.

[0084] Furthermore, this application embodiment also provides a vehicle-mounted unit, which includes the communication device in any of the above embodiments. Optionally, the vehicle-mounted unit may be a device unit including V2X equipment, used for communication scenarios between vehicles, vehicles-to-infrastructure, and vehicles-to-cloud. For example, by sharing some antenna interfaces for 4G and 5G within the V2X equipment, it is compatible with 4G LTE antenna and 5G NR antenna designs, greatly reducing the total number of external antennas, simplifying hardware circuit design, reducing equipment size, and facilitating equipment installation.

[0085] The computer program product of the above-described method provided in this application includes a computer-readable storage medium storing program code. The instructions included in the program code can be used to execute the steps in the above-described method embodiments. For details, please refer to the above-described method embodiments, which will not be repeated here.

[0086] In the embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of modules is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the displayed or discussed mutual couplings, direct couplings, or communication connections may be through some communication interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms. The functional modules in the embodiments of this application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0087] It should be noted that if the function is implemented as a software module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or part of the 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 to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0088] In this document, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying any such actual relationship or order between these entities or operations.

[0089] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A communication device, characterized in that, The device includes: a main control module, a first communication module, and a second communication module; the main control module is communicatively connected to both the first communication module and the second communication module. The main antenna of the first communication module and the main antenna of the second communication module share the first antenna interface circuit; the diversity antenna of the first communication module and the diversity antenna of the second communication module share the second antenna interface circuit. The first communication module communicates with the base station at high speed through its corresponding main antenna and diversity antenna; the second communication module communicates with the base station at low speed through its corresponding main antenna and diversity antenna; and the main control module switches between high-speed and low-speed communication through the first antenna interface circuit and the second antenna interface circuit. Wherein, a second resistor is provided on the main antenna of the first communication module, and a fourth resistor is provided on the diversity antenna of the first communication module; a first resistor is provided on the main antenna of the second communication module, and a third resistor is provided on the diversity antenna of the second communication module; The first resistor and the second resistor are soldered together at one end and connected to the first antenna interface to form the first antenna interface circuit. The third resistor and the fourth resistor are soldered together at one end and connected to the second antenna interface to form the second antenna interface circuit. The first resistor is connected to the main antenna of the second communication module, and the third resistor is connected to the diversity antenna of the second communication module; or, the second resistor is connected to the main antenna of the first communication module, and the fourth resistor is connected to the diversity antenna of the first communication module. When the other ends of the first resistor and the third resistor are welded together, the main control module performs low-speed communication; when the other ends of the second resistor and the fourth resistor are welded together, the main control module performs high-speed communication.

2. The apparatus according to claim 1, characterized in that, in, The first resistor, the second resistor, the third resistor, and the fourth resistor are zero-resistance resistors.

3. The apparatus according to claim 1, characterized in that, in, One end of the second resistor is connected to the output matching network of the first communication module, and one end of the fourth resistor is connected to the output matching network of the first communication module; one end of the first resistor is connected to the output matching network of the second communication module, and one end of the third resistor is connected to the output matching network of the second communication module. The output matching network is used to optimize the impedance between the first communication module and the resistor, or to optimize the impedance between the second communication module and the resistor.

4. The apparatus according to claim 3, characterized in that, The output matching network includes a π-type matching network composed of a series capacitor, a first inductor, and a second inductor. One end of the series capacitor is connected in series with one end of the first inductor, and the other end of the series capacitor is connected in series with one end of the second inductor. The other end of the first inductor is grounded, and the other end of the second inductor is grounded.

5. The apparatus according to claim 3, characterized in that, The output matching network includes a T-type matching network composed of parallel inductors, a first capacitor, and a second capacitor. The first capacitor and the second capacitor are connected in series; one end of the parallel inductor is grounded, and the other end is connected to the common terminal of the series connection of the first capacitor and the second capacitor.

6. The apparatus according to claim 1, characterized in that, The device further includes: a V2X module; the V2X module is communicatively connected to the main control module; The V2X module transmits and receives signals through the V2X main antenna and the V2X auxiliary antenna to perform V2X communication.

7. The apparatus according to claim 1, characterized in that, The device further includes: a GPS module; the GPS module is communicatively connected to the main control module; The GPS module transmits and receives signals via the GPS antenna, generating location information which is then transmitted to the main control module.

8. A communication method, characterized in that, The apparatus described in any one of claims 1-7, the apparatus comprising: a main control module, a first communication module, and a second communication module; the main control module being communicatively connected to the first communication module and the second communication module respectively; the main antenna of the first communication module and the main antenna of the second communication module sharing a first antenna interface circuit; the diversity antenna of the first communication module and the diversity antenna of the second communication module sharing a second antenna interface circuit; the method comprising: High-speed communication with the base station is achieved through the main antenna and diversity antenna of the first communication module; Low-speed communication with the base station is achieved through the main antenna and diversity antenna of the second communication module; Through the first antenna interface circuit and the second antenna interface circuit, the main control module switches the corresponding communication mode to perform high-speed communication or low-speed communication.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, performs the steps of the method as described in claim 8.

10. A vehicle-mounted unit, characterized in that, The vehicle-mounted unit includes the communication device as described in any one of claims 1-7.

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