A method and related device for shortening the communication delay between vehicle and ground in high-speed maglev

Abstract

The present application discloses a method and related device for shortening the vehicle-ground communication delay in high-speed maglev, which relates to the field of communication technologies. The method includes obtaining a PRW message; retrieving the PRW message, establishing a socket based on the corresponding flag and byte length; binding the socket to the optical port of the corresponding base station; determining whether the protocol and flag of the PRW message are correct; if not, processing it according to normal services; if so, forwarding the PRW message to the optical port of the corresponding base station by using the socket; and transmitting the PRW message to each MCU board through the optical port of the corresponding base station. In the present application, the data no longer passes through the core network and is directly output from the optical port of the base station BBU and transmitted to the ground control device through the PRW switch, saving the processing time of the core network. Especially when the core network server and the switch device are far apart, the time saving is particularly obvious.

Description

Technical Field

[0001] The present application relates to the field of communication technologies, and particularly to a method and related device for shortening the train-ground communication delay in high-speed maglev trains. Background Art

[0002] The train operation control system is a key technology and core equipment for ensuring train operation safety and improving transportation efficiency in rail transit, and is the "brain and nervous system" of rail transit. Train-ground communication data is mainly divided into two parts: one part is safety-related data, mainly including positioning and speed measurement data, operation control data, status and diagnosis data, etc., which have strict requirements for delay and packet loss; the other part is non-safety-related data services, mainly including running voice communication, train operation data, passenger information system, CCTV video monitoring, which have higher requirements for transmission rate. The traction control system obtains real-time positioning information from the train and performs real-time control on the traction force. The requirement for the transmission delay of train positioning data is not greater than 5 ms. The train positioning data transmission delay refers to the entire transmission time within the train-ground wireless communication system from the moment the on-vehicle terminal device receives the train's real-time positioning information to the moment the ground base station device outputs it to the traction control.

[0003] At present, the mature maglev train-ground communication system still mainly uses the German 38 GHz dedicated millimeter-wave communication. Although the delay can meet the communication requirements of high-speed maglev trains, this system cannot meet services with higher requirements for transmission rate such as video monitoring. And the currently applied network systems in the domestic rail transit industry still cannot meet the maglev train-ground communication requirements in terms of transmission delay and reliability. Therefore, there is an urgent need to propose a train-ground communication system that can not only meet the requirement of the high-speed maglev communication delay not exceeding 5 ms, but also has the ability to transmit services with a relatively high transmission rate for the train-ground communication problem under the moving conditions of 600 - 1000 km / h. Summary of the Invention

[0004] The purpose of the present application is to provide a method and related device for shortening the train-ground communication delay in high-speed maglev trains, which can reduce the train positioning data transmission delay.

[0005] To achieve the above purpose, the present application provides the following solutions.

[0006] In a first aspect, the present application provides a method for shortening the train-ground communication delay in high-speed maglev trains, and the method for shortening the train-ground communication delay in high-speed maglev trains includes the following steps.

[0007] Obtain a PRW (Passenger Radio Wireless) message.

[0008] Retrieve the PRW message, establish a socket based on the corresponding flag and byte length; bind the socket to the optical port of the corresponding base station.

[0009] Judge whether the protocol and flag of the PRW message are correct to obtain a first judgment result.

[0010] If the first judgment result is negative, process it according to normal services.

[0011] If the first judgment result is positive, forward the PRW message to the optical port of the corresponding base station using the socket; and transmit the PRW message to each MCU board through the optical port of the corresponding base station.

[0012] Optionally, if the judgment result is negative, process it according to normal services, which specifically includes the following steps.

[0013] Use the core network to judge whether the access permission of the terminal device to the network is legal to obtain a second judgment result; the core network is used to receive the normal service and manage the access permission of the terminal device to the network.

[0014] If the second judgment result is negative, reject the processing.

[0015] If the second judgment result is positive, transmit the normal service to the core network.

[0016] In a second aspect, the present application provides a system for shortening the vehicle-ground communication delay on high-speed maglev. The system for shortening the vehicle-ground communication delay on high-speed maglev is used to implement the method for shortening the vehicle-ground communication delay on high-speed maglev described above. The system for shortening the vehicle-ground communication delay on high-speed maglev includes: a sending end and a receiving end.

[0017] The sending end includes: an analog PRW message sending board, a PRW message receiving board, and a 5G board.

[0018] The analog PRW message sending board is connected to the PRW message receiving board and is used to transmit the PRW message to the PRW message receiving board.

[0019] The PRW message receiving board is connected to the 5G board and is used to transmit the PRW message to the 5G board.

[0020] The receiving end includes: a rooftop and a first-floor partition control room.

[0021] The rooftop includes several base stations; each base station includes: a base station BBU, a PDCP layer, and a base station optical port; each base station is used to receive the PRW message; the base station BBU is used to retrieve the PRW message, establish a socket based on the corresponding flag and byte length; the socket is bound to the corresponding base station optical port; the PDCP layer is used to check the protocol and flag of the PRW message, and when the protocol and flag of the PRW message are correct, forward the PRW message to the corresponding base station optical port using the socket.

[0022] The first-floor partition control room includes: several MCU boards and PRW switch devices.

[0023] The PRW switch device is respectively connected to each base station optical port and each MCU board, and transmits the PRW message to each MCU board through PRW interface conversion.

[0024] Optionally, the analog PRW message sending board, the PRW message receiving board, and the 5G board all need to be connected to a GPS antenna.

[0025] Optionally, the system for shortening the vehicle-ground communication delay on high-speed maglev further includes: a three-story computer room.

[0026] The three-story computer room includes: a core switch device and a core network.

[0027] The core switch device is respectively connected to each base station and the core network, and is used to transmit normal services to the core network; the core network is used to receive the normal services and manage the access rights of terminal devices to the network.

[0028] Optionally, the system for shortening the vehicle-ground communication delay on high-speed maglev further includes: a host computer.

[0029] The host computer is connected to the MCU board through a network port, and is used to receive the PRW message and display it.

[0030] In a third aspect, the present application provides a device for shortening the vehicle-ground communication delay on high-speed maglev. The device for shortening the vehicle-ground communication delay on high-speed maglev is used to implement the method for shortening the vehicle-ground communication delay on high-speed maglev described above. The device for shortening the vehicle-ground communication delay on high-speed maglev includes the following modules.

[0031] The PRW message acquisition module is used to acquire the PRW message.

[0032] A retrieval module, configured to retrieve the PRW packet, establish a socket based on corresponding flags and byte lengths; and bind the socket to the optical port of the corresponding base station.

[0033] A judgment module, configured to judge whether the protocol and flags of the PRW packet are correct, and obtain a first judgment result.

[0034] A normal service processing module, configured to perform normal service processing when the first judgment result is negative.

[0035] A forwarding module, configured to, when the first judgment result is positive, forward the PRW packet to the optical port of the corresponding base station by using the socket; and transmit the PRW packet to each MCU board through the optical port of the corresponding base station.

[0036] In a fourth aspect, the present application provides a computer device, including: a memory, a processor, and a computer program stored on the memory and executable on the processor, where the processor executes the computer program to implement the method for shortening the vehicle-ground communication delay used in high-speed maglev as described in any one of the above.

[0037] In a fifth aspect, the present application provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it implements the method for shortening the vehicle-ground communication delay used in high-speed maglev as described in any one of the above.

[0038] In a sixth aspect, the present application provides a computer program product, including a computer program, and when the computer program is executed by a processor, it implements the method for shortening the vehicle-ground communication delay used in high-speed maglev as described in any one of the above.

[0039] According to the specific embodiments provided by the present application, the following technical effects are disclosed in the present application:

[0040] The present application provides a method and related device for shortening the vehicle-ground communication delay in high-speed maglev. The method includes: obtaining a PRW message; retrieving the PRW message, establishing a socket based on the corresponding flag and byte length; binding the socket to the optical port of the corresponding base station; determining whether the protocol and flag of the PRW message are correct to obtain a first determination result; if the first determination result is no, then processing it according to normal services; if the first determination result is yes, then forwarding the PRW message to the optical port of the corresponding base station using the socket; and transmitting the PRW message to each MCU board through the optical port of the corresponding base station. In the present application, in the ground vehicle-ground communication system for transmitting the passenger wireless communication service in a high-speed maglev train, the data no longer passes through the core network and directly outputs from the optical port of the base station BBU, and is transmitted to the ground control device through the PRW switch, saving the processing time of the core network. Especially when the core network server and the switch device are far apart, the time saving is particularly obvious. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0042] Figure 1 It is a schematic structural diagram of a vehicle-ground communication system in the traditional rail transit industry.

[0043] Figure 2 It is a schematic flowchart of a method for shortening the vehicle-ground communication delay in high-speed maglev provided by an embodiment of the present application.

[0044] Figure 3 It is a schematic structural diagram of a system for shortening the vehicle-ground communication delay in high-speed maglev provided by an embodiment of the present application.

[0045] Figure 4 It is a schematic diagram of the data message format provided by an embodiment of the present application.

[0046] Figure 5 It is a schematic diagram of the functional modules of a device for shortening the vehicle-ground communication delay in high-speed maglev provided by an embodiment of the present application.

[0047] Figure 6 It is a schematic structural diagram of a computer device provided by an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0048] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0049] To make the above objects, features, and advantages of the present application more apparent and understandable, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0050] Currently, in the traditional rail transit industry, the vehicle-ground communication system is as Figure 1 shown. The train positioning data is wirelessly transmitted to the base station through a wireless transmission module located on the train roof. The data goes through the physical layer processing of the base station BBU (Building Baseband Unit) to layer two and layer three, and finally through the switch to the core network. Finally, the data is processed by the core network and then sent to the train control unit MCU module through the switch to perform a series of operations such as traction, braking, and acceleration on the train. Therefore, the data is emitted from the terminal and then reaches the ground device MCU. During this process, it experiences air interface transmission (negligible), physical layer processing, layer two and layer three protocol stack processing, optical fiber transmission through the switch, and finally reaches the core network. After being processed by the core network, it finally returns to the ground device MCU through the switch.

[0051] By capturing packets with wireshark, we can see the ping packet delay of each layer of the uplink data. We can see that the data goes through the PHY (Physical) layer, to the MAC (Medium Access Control) layer, then to the RLC (Radio Link Control) layer, and finally the core network receives the ping request and returns a ping reply. The total delay is about 255 us. This statistic is based on the premise that the fiber optic distance between the core network server and the switch is negligible. In the actual high-speed maglev deployment scenario, the switch and the MCU are placed in the same computer room, while the core network server and the switch are separated by dozens or even hundreds of kilometers. If the data still needs to go through the core network and then be sent to the ground control device, this section of the delay will be greatly increased, which will cause very big problems to the overall system. Therefore, we need to consider data sinking, that is, the data no longer goes through the core network for processing, but directly outputs data through the physical layer of the base station and is directly aggregated to the ground MCU device through the PRW switch.

[0052] In an exemplary embodiment, as Figure 2As shown, a method for reducing the vehicle-ground communication delay in high-speed maglev is provided. The method for reducing the vehicle-ground communication delay in high-speed maglev includes the following steps.

[0053] S1: Obtain the PRW message.

[0054] S2: Retrieve the PRW message, establish a socket based on the corresponding flag and byte length; bind the socket to the optical port of the corresponding base station.

[0055] S3: Judge whether the protocol and flag of the PRW message are correct to obtain a first judgment result.

[0056] S4: If the first judgment result is no, process it according to normal services.

[0057] S5: If the first judgment result is yes, forward the PRW message to the optical port of the corresponding base station using the socket; and transmit the PRW message to each MCU board through the optical port of the corresponding base station.

[0058] Implementing the above steps S1 to S5, when the ground vehicle-ground communication system transmits the passenger wireless communication service in a high-speed maglev train, the data no longer passes through the core network, but directly exits from the optical port of the base station BBU and is transmitted to the ground control device through the PRW switch, saving the processing time of the core network. Especially when the core network server and the switch device are far apart, the time saving is particularly obvious.

[0059] In an exemplary embodiment, in step S4, it specifically includes the following content.

[0060] S41: Use the core network to judge whether the access permission of the terminal device to the network is legal to obtain a second judgment result; the core network is used to receive the normal service and manage the access permission of the terminal device to the network.

[0061] S42: If the second judgment result is no, reject the processing.

[0062] S43: If the second judgment result is yes, transmit the normal service to the core network.

[0063] The present application also provides an application scenario, which applies the method for shortening the vehicle-ground communication delay used in high-speed maglev as described above. Specifically: The method for shortening the vehicle-ground communication delay used in high-speed maglev provided in this embodiment can be applied to the vehicle-ground communication scenario. The vehicle-ground communication scenario includes: a PRW message acquisition link, a retrieval link, a judgment link, a normal service processing link, and a forwarding link; First, acquire the PRW message; Secondly, retrieve the PRW message, establish a socket based on the corresponding flag and byte length; Bind the socket to the corresponding base station optical port; Furthermore, judge whether the protocol and flag of the PRW message are correct to obtain a first judgment result; If the first judgment result is no, process it according to normal services; If the first judgment result is yes, forward the PRW message to the corresponding base station optical port using the socket; And transmit the PRW message to each MCU board through the corresponding base station optical port.

[0064] To ensure that the PRW data of the maglev vehicle-ground wireless communication system comes out of the base station BBU, the modified solution is designed as Figure 3 shown.

[0065] Specifically, a system for shortening the vehicle-ground communication delay used in high-speed maglev is provided. The system for shortening the vehicle-ground communication delay used in high-speed maglev is used to implement the method for shortening the vehicle-ground communication delay used in high-speed maglev as described above. The system for shortening the vehicle-ground communication delay used in high-speed maglev includes: a sending end and a receiving end.

[0066] The sending end includes: an analog PRW message sending board, a PRW message receiving board, and a 5G board.

[0067] The analog PRW message sending board is connected to the PRW message receiving board and is used to transmit the PRW message to the PRW message receiving board.

[0068] The PRW message receiving board is connected to the 5G board and is used to transmit the PRW message to the 5G board.

[0069] The receiving end includes: a rooftop and a first-floor partition control room.

[0070] The rooftop includes several base stations; Each base station includes: a base station BBU, a PDCP layer, and a base station optical port; Each base station is used to receive the PRW message; The base station BBU is used to retrieve the PRW message and establish a socket based on the corresponding flag and byte length; Bind the socket to the corresponding base station optical port; The PDCP layer is used to check the protocol and flag of the PRW message. When the protocol and flag of the PRW message are correct, forward the PRW message to the corresponding base station optical port using the socket.

[0071] The first - layer partition control room includes: a number of MCU boards and PRW switch devices.

[0072] The PRW switch device is respectively connected to each base - station optical port and each MCU board, and transmits the PRW packets to each MCU board through PRW interface conversion.

[0073] In an exemplary embodiment, the analog PRW packet - sending board, the PRW packet - receiving board, and the 5G board all need to be connected to a GPS antenna. Specifically, the analog PRW packet - sending board is connected to the PRW packet - receiving board through a DB9 line above the board for transmitting PRW packets; the PRW packet - receiving board is connected to the 5G board through a network port for transmitting the PRW packets to the 5G board.

[0074] In an exemplary embodiment, at the receiving end: The base - station BBU retrieves the PRW data (UDP packet) uploaded by the vehicle - mounted terminal, which starts with 0x817F and has a tentative length of 32 bytes. When starting, a socket is established and bound to the network card (base - station optical port). The PDCP (Packet Data Convergence Protocol) layer checks that it is a UDP protocol and the flag is 0x817f, and then uses the socket bound to the second optical port to send it to the target IP, which is parsed from the UL data IP header. The data with the flag of 0x817F is directly forwarded to the second optical port of the base station and no longer goes to the core network. The main function of the core network is to manage the access permissions of terminal devices (such as mobile phones, IoT devices) to the network, ensure that legitimate users can use network services. Through the SIM card or similar authentication mechanisms (such as IMSI, EAP - AKA protocol, etc.), the user identity is verified to prevent unauthorized users from accessing. It also confirms whether the terminal device meets the network access requirements. Therefore, some user control signaling, session management, mobility management, and data for external network communication must pass through the core network. However, local communication (Local Breakout) such as direct device - to - device (D2D) communication or short - distance communication between nearby devices can be directly completed at the base station (eNodeB / gNodeB) or edge device without passing through the core network for transit. Therefore, by forwarding the PRW data to the second optical port through the PDCP layer in the protocol stack and then directly connecting to the ground device through the base - station optical port, the latency is saved and the time for data to reach the core network is saved.

[0075] The data packet format is as Figure 4As shown in the figure. It should be noted that the vehicle-mounted terminal unicasts PRW messages to multiple MCUs respectively, and the BBU only performs transparent forwarding without adding fields for the time being. The vehicle-mounted terminal information is added to the valid data by the terminal side.

[0076] In an exemplary embodiment, the system for shortening the vehicle-ground communication delay on high-speed maglev further includes: a three-story computer room.

[0077] The three-story computer room includes: a core switch device and a core network.

[0078] The core switch device is respectively connected to each base station and the core network, and is used to transmit normal services to the core network; the core network is used to receive the normal services and manage the access rights of terminal devices to the network.

[0079] The 10G optical port 1 (SFP1) of the BBU is connected to the core network, and the original normal services still go to the core network. As Figure 3 shown in the right part, the data passes through the physical layer, layer 2, layer 3, and finally through the core switch and then to the server of the core network. The PRW data directly goes out from the 10G optical port 2 (SFP2) of the BBU and is connected to the PRW switch device, and the data can save the processing time of layer 2, layer 3, and the core network.

[0080] In an exemplary embodiment, the system for shortening the vehicle-ground communication delay on high-speed maglev further includes: a host computer.

[0081] The host computer is connected to the MCU board through a network port and is used to receive and display the PRW messages.

[0082] The PRW switch device is connected to the MCU board through a network cable and is used to send the PRW messages to the MCU board (traction); the MCU board sends the data to the host computer for display through a network port. The PRW interface conversion device identifies different base stations through the BBU IP.

[0083] Based on the same inventive concept, the embodiment of the present application also provides a device for implementing the method for shortening the vehicle-ground communication delay on high-speed maglev involved above. The solution provided by the device to solve the problem is similar to the solution recorded in the above method. Therefore, the specific limitations in one or more embodiments of the device for shortening the vehicle-ground communication delay on high-speed maglev provided below can refer to the limitations on the method for shortening the vehicle-ground communication delay on high-speed maglev in the above text, and will not be repeated here.

[0084] In an exemplary embodiment, as Figure 5 shown, a device for shortening the vehicle-ground communication delay on high-speed maglev is provided, and the device for shortening the vehicle-ground communication delay on high-speed maglev includes the following modules.

[0085] The PRW message acquisition module M1 is used to acquire PRW messages.

[0086] The retrieval module M2 is used to retrieve the PRW message, establish a socket based on the corresponding flag and byte length; the socket is bound to the optical port of the corresponding base station.

[0087] The judgment module M3 is used to judge whether the protocol and flag of the PRW message are correct, and obtain a first judgment result.

[0088] The normal service processing module M4 is used to perform normal service processing when the first judgment result is no.

[0089] The forwarding module M5 is used to forward the PRW message to the optical port of the corresponding base station by using the socket when the first judgment result is yes; and transmit the PRW message to each MCU board through the optical port of the corresponding base station.

[0090] In an exemplary embodiment, a computer device is provided. The computer device can be a server or a terminal, and its internal structure diagram can be as Figure 6 shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, abbreviated as I / O), and a communication interface. Among them, the processor, the memory, and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store PRW messages. The input / output interface of the computer device is used to exchange information between the processor and external devices. The communication interface of the computer device is used to communicate with external terminals through a network connection. When the computer program is executed by the processor, it realizes a method for shortening the vehicle-ground communication delay on a high-speed maglev.

[0091] Those skilled in the art can understand that Figure 6 the structure shown in

[0092] In an exemplary embodiment, a computer device is further provided, including a memory and a processor. A computer program is stored in the memory, and when the processor executes the computer program, the above-mentioned method embodiments are implemented.

[0093] In an exemplary embodiment, a computer-readable storage medium is provided, storing a computer program, and when the computer program is executed by a processor, the above-mentioned method embodiments are implemented.

[0094] In an exemplary embodiment, a computer program product is provided, including a computer program, and when the computer program is executed by a processor, the above-mentioned method embodiments are implemented.

[0095] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use, and processing of relevant data need to comply with relevant regulations.

[0096] Those of ordinary skill in the art can understand that all or part of the processes of implementing the above method embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the above method embodiments. Among them, any reference to a memory, database, or other medium used in the embodiments provided in this application can include at least one of non-volatile and volatile memories. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc.

[0097] In each of the embodiments provided in the present application, the database involved may include at least one of a relational database and a non-relational database. The non-relational database may include a distributed database based on blockchain, etc., and is not limited thereto. In each of the embodiments provided in the present application, the processor may be a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., and is not limited thereto.

[0098] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0099] Specific examples are used in this article to elaborate on the principles and implementation manners of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A method for shortening vehicle-ground communication delay in high-speed maglev, characterized in that: The method for shortening vehicle-ground communication delay in high-speed maglev includes: Get the PRW message; Retrieving the PRW message, establishing a socket based on the corresponding flag and byte length; binding the socket to the corresponding base station optical port; Determine whether the protocol and the flag of the PRW message are correct, and obtain a first determination result; If the first judgment result is no, then process the business as normal; If the first judgment result is yes, the PRW message is forwarded to the corresponding base station optical port by using a socket; and the PRW message is transmitted to each MCU board through the corresponding base station optical port; If the first judgment result is no, then the normal business process is carried out, including: The core network is used to determine whether the terminal device's network access authority is legal, and obtain a second determination result; the core network is used to receive the normal service and manage the terminal device's network access authority; If the second judgment result is no, then refuse to process; If the second judgment result is yes, the normal service is transmitted to the core network.

2. A system for shortening vehicle-ground communication delay on a high-speed maglev, the system for shortening vehicle-ground communication delay on a high-speed maglev being used to implement the method for shortening vehicle-ground communication delay on a high-speed maglev as claimed in claim 1, the system for shortening vehicle-ground communication delay on a high-speed maglev comprising: The sender and receiver; The transmitting end includes: a simulated PRW message sending board, a PRW message receiving board and a 5G board; The simulated PRW message sending board is connected to the PRW message receiving board and is used to transmit the PRW message to the PRW message receiving board; The PRW message receiving board is connected to the 5G board and is used to transmit the PRW message to the 5G board; The receiving end includes: a rooftop terrace and a first floor partition control room; The rooftop platform includes several base stations; the base stations include: a base station BBU, a PDCP layer and a base station optical port; each base station is used to receive the PRW message; the base station BBU is used to retrieve the PRW message and establish a socket based on the corresponding flag and byte length; the socket is bound to the corresponding base station optical port; the PDCP layer is used to check the protocol and flag of the PRW message, and when the protocol and flag of the PRW message are correct, the socket is used to forward the PRW message to the corresponding base station optical port; The first-floor partition control room includes: a number of MCU boards and PRW switch equipment; The PRW switch device is connected to each of the base station optical ports and each of the MCU boards respectively, and transmits the PRW messages to each of the MCU boards respectively through PRW interface conversion.

3. The system for shortening vehicle-ground communication delay in high-speed maglev according to claim 2 is characterized in that: The simulated PRW message sending board, the PRW message receiving board and the 5G board all need to be connected to a GPS antenna.

4. The system for shortening vehicle-ground communication delay in high-speed maglev according to claim 2 is characterized in that: The system for shortening vehicle-ground communication delay on high-speed maglev also includes: a three-story machine room; The three-story computer room includes: core switch equipment and core network; The core switch device is connected to each of the base stations and the core network respectively, and is used to transmit normal services to the core network; the core network is used to receive the normal services and manage the access rights of terminal devices to the network.

5. The system for shortening vehicle-ground communication delay in high-speed maglev according to claim 2 is characterized in that: The system for shortening vehicle-ground communication delay in high-speed maglev also includes: a host computer; The host computer is connected to the MCU board through a network port, and is used to receive and display the PRW message.

6. A device for shortening vehicle-ground communication delay on a high-speed maglev, the device for shortening vehicle-ground communication delay on a high-speed maglev being used to implement the method for shortening vehicle-ground communication delay on a high-speed maglev as claimed in claim 1, characterized in that: The device for shortening the vehicle-ground communication delay in high-speed maglev comprises: A PRW message acquisition module, used to acquire PRW messages; A retrieval module, used to retrieve the PRW message and establish a socket based on the corresponding flag and byte length; the socket is bound to the corresponding base station optical port; A judgment module, used to judge whether the protocol and the flag of the PRW message are correct, and obtain a first judgment result; A normal service processing module, used for processing according to normal services when the first judgment result is no, specifically comprising: using the core network to judge whether the terminal device's access rights to the network are legal, and obtaining a second judgment result; the core network is used to receive the normal services and manage the terminal device's access rights to the network; if the second judgment result is no, refusing to process; if the second judgment result is yes, transmitting the normal services to the core network; A forwarding module is used to forward the PRW message to the corresponding base station optical port using a socket when the first judgment result is yes; and transmit the PRW message to each MCU board through the corresponding base station optical port.

7. A computer device comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the method for shortening the vehicle-ground communication delay in high-speed maglev as described in claim 1.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method for shortening the vehicle-ground communication delay in high-speed maglev described in claim 1 is implemented.

9. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the method for shortening the vehicle-ground communication delay in high-speed maglev described in claim 1 is implemented.

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