Method for shortening train-ground communication time delay on high-speed magnetic levitation and related device

Abstract

The invention discloses a method for shortening train-ground communication time delay on high-speed magnetic levitation and a related device, and relates to the technical field of communication, and the method comprises the steps: obtaining a PRW message; retrieving the PRW message, and establishing a socket based on the corresponding mark and the byte length; the socket is bound with a corresponding base station optical port; judging whether the protocol and the mark of the PRW message are correct or not; if not, processing according to a normal service; if yes, forwarding the PRW message to a corresponding base station optical port by adopting a socket; and transmitting the PRW message to each MCU board card through a corresponding base station optical port. In the application, the data is directly output from the optical port of the base station BBU without passing through the core network, and is transmitted to the ground control equipment through the PRW switch, so that the processing time of the core network is saved, and especially when the core network server is far away from the switch equipment, the time is obviously saved.

Description

Technical Field

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

[0002] As the key technology and core equipment to ensure train driving safety and improve transportation efficiency in rail transit, the train operation control system is the "brain and nervous system" of rail transit. The train-to-ground communication data is mainly divided into two parts: one part is safety data, which mainly includes positioning and speed measurement data, operation control data, status and diagnostic data, etc., which has strict requirements on delay and packet loss; the other part is non-safety data services, which mainly include operation voice communication, train operation data, passenger information system, CCTV video monitoring, and have high requirements on transmission rate. The traction control system obtains real-time positioning information from the train and controls the traction force in real time. The train positioning data transmission delay is required to be no more than 5ms. The train positioning data transmission delay refers to the entire transmission time within the train-to-ground wireless communication system from the time the on-board terminal equipment receives the real-time positioning information of the train to the time the ground base station equipment outputs it to the traction control.

[0003] At present, the mature maglev train-to-ground communication system is still mainly based on Germany's 38GHz dedicated millimeter wave communication. Although the latency can meet the communication requirements of high-speed maglev trains, this system cannot meet the services that require higher transmission rates, such as video surveillance. The current network standards used in the domestic rail transit industry cannot meet the maglev train-to-ground communication requirements in terms of transmission latency and reliability. Therefore, it is urgent to propose a set of train-to-ground communication systems that can meet the high-speed maglev communication latency requirements of no more than 5ms and can transmit higher-rate services in order to solve the train-to-ground communication problems under the conditions of 600-1000 kilometers per hour. Summary of the invention

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

[0005] To achieve the above objectives, this application provides the following solutions.

[0006] In a first aspect, the present application provides a method for shortening vehicle-to-ground communication delay on a high-speed maglev, and the method for shortening vehicle-to-ground communication delay on a high-speed maglev comprises the following steps.

[0007] Get PRW (Passenger Radio Wireless) messages.

[0008] The PRW message is retrieved, and a socket is established based on the corresponding flag and byte length; the socket is bound to the corresponding base station optical port.

[0009] It is determined whether the protocol and the flag of the PRW message are correct to obtain a first determination result.

[0010] If the first judgment result is no, then normal business processing is performed.

[0011] If the first judgment result is yes, the PRW message is forwarded to the corresponding base station optical port using a socket; and the PRW message is transmitted to each MCU board through the corresponding base station optical port.

[0012] Optionally, if the judgment result is no, normal business processing is performed, which specifically includes the following steps.

[0013] The core network is used to determine whether the terminal device's access rights to the network are legal, and obtain a second determination result; the core network is used to receive the normal service and manage the terminal device's access rights to the network.

[0014] If the second judgment result is no, the processing is rejected.

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

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

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

[0018] 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.

[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 terrace and a first floor partition control room.

[0021] The rooftop platform includes several base stations; the 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; 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.

[0022] The first-floor partition control room includes: a number of MCU boards and PRW switch equipment.

[0023] 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.

[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 vehicle-ground communication delay in high-speed maglev also includes: a three-story machine room.

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

[0027] 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.

[0028] Optionally, the system for shortening vehicle-ground communication delay in 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 and display the PRW message.

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

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

[0032] The retrieval module 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.

[0033] The judgment module is used to judge whether the protocol and the flag of the PRW message are correct, and obtain a first judgment result.

[0034] The normal business processing module is used to perform normal business processing when the first judgment result is no.

[0035] 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.

[0036] In a fourth aspect, the present application provides 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 any of the above-mentioned methods for shortening vehicle-ground communication delay on high-speed maglev.

[0037] In a fifth aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements any of the above-mentioned methods for shortening vehicle-ground communication delay on high-speed maglev.

[0038] In a sixth aspect, the present application provides a computer program product, including a computer program, which, when executed by a processor, implements any of the above-mentioned methods for shortening vehicle-ground communication delay on high-speed maglev.

[0039] According to the specific embodiments provided in this application, this application discloses the following technical effects: The present application provides a method and related device for shortening the vehicle-ground communication delay in high-speed maglev, the method comprising: obtaining a 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; judging whether the protocol and flag of the PRW message are correct, and obtaining a first judgment result; if the first judgment result is no, processing it as normal business; if the first judgment result is yes, forwarding the PRW message to the corresponding base station optical port using a socket; and transmitting the PRW message to each MCU board through the corresponding base station optical port. In the present application, when the ground vehicle-ground communication system transmits the passenger wireless communication service business in the high-speed maglev train, the data no longer passes through the core network, but is directly output from the optical port of the base station BBU and transmitted to the ground control equipment through the PRW switch, which saves the processing time of the core network, especially when the core network server and the switch equipment are far apart, the time saving is particularly obvious. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 This is a structural diagram of the vehicle-to-ground communication system in the traditional rail transit industry.

[0042] Figure 2 A flowchart of a method for shortening vehicle-ground communication delay in high-speed maglev provided in one embodiment of the present application.

[0043] Figure 3 A schematic diagram of the structure of a system for shortening vehicle-ground communication delay in high-speed maglev provided in one embodiment of the present application.

[0044] Figure 4 A schematic diagram of a data message format provided for an embodiment of the present application.

[0045] Figure 5 A schematic diagram of the functional modules of a device for shortening vehicle-ground communication delay in high-speed maglev provided in one embodiment of the present application.

[0046] Figure 6 A schematic diagram of the structure of a computer device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0048] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0049] At present, the vehicle-to-ground communication system in the traditional rail transit industry is Figure 1 As shown in the figure, the train positioning data is transmitted to the base station by wireless transmission module located on the top of the train. The data is processed by the physical layer of the base station BBU (Building Baseband Unit) to layer 2 and layer 3, and finally to the core network through the switch. 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 of the train. Therefore, the data is transmitted from the terminal to the ground equipment MCU for processing, which has gone through air interface transmission (negligible) to physical layer processing, layer 2 and layer 3 protocol stack processing, and then through the optical fiber transmission of the switch, and finally reaches the core network, processed by the core network, and finally returns to the ground equipment MCU through the switch.

[0050] 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 passes through the PHY (Physical, physical layer), to the MAC (Medium Access Control, media access layer), to the RLC (Radio Link Control, radio link control) layer, and then to the core network to receive the ping request request, and finally to send a ping reply. The total delay is about 255us. The premise of this statistic is that the optical fiber distance between the core network server and the switch is negligible. In the actual high-speed maglev deployment scenario, the switch and MCU will be placed in the same computer room, and the core network server and switch are tens or even hundreds of kilometers apart. If the data has to pass through the core network and then be given to the ground control equipment, this delay will be greatly increased, which will cause very big problems for the overall system. Therefore, we need to consider data sinking. The data will no longer be processed by the core network, but will be directly sent out through the physical layer of the base station and directly aggregated to the ground MCU device through the PRW switch.

[0051] In an exemplary embodiment, Figure 2As shown, a method for shortening the vehicle-ground communication delay on a high-speed maglev is provided. The method for shortening the vehicle-ground communication delay on a high-speed maglev includes the following steps.

[0052] S1: Get the PRW message.

[0053] S2: 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.

[0054] S3: Determine whether the protocol and the flag of the PRW message are correct, and obtain a first determination result.

[0055] S4: If the first judgment result is no, then process the business as normal.

[0056] S5: 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.

[0057] By implementing the above steps S1 to S5, when the ground vehicle-to-ground communication system transmits the passenger wireless communication service business in the high-speed maglev train, the data no longer passes through the core network, but directly goes out from the optical port of the base station BBU and is transmitted to the ground control equipment through the PRW switch, thereby saving the processing time of the core network. Especially when the core network server and the switch equipment are far apart, the time saving is particularly obvious.

[0058] In an exemplary embodiment, step S4 specifically includes the following contents.

[0059] S41: using the core network to determine whether the terminal device's network access authority is legal, and obtaining a second determination result; the core network is used to receive the normal service and manage the terminal device's network access authority.

[0060] S42: If the second judgment result is no, then refuse to process.

[0061] S43: If the second judgment result is yes, the normal service is transmitted to the core network.

[0062] The present application also provides an application scenario, which applies the above-mentioned method for shortening the vehicle-to-ground communication delay on high-speed maglev. Specifically: The method for shortening the vehicle-to-ground communication delay on high-speed maglev provided in this embodiment can be applied in the vehicle-to-ground communication scenario. The vehicle-to-ground communication scenario includes: PRW message acquisition link, retrieval link, judgment link, normal business processing link and forwarding link; first, obtain the PRW message; secondly, 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; furthermore, determine whether the protocol and flag of the PRW message are correct, and obtain a first judgment result; if the first judgment result is no, it is processed as normal business; if the first judgment result is yes, the socket is used to forward the PRW message to the corresponding base station optical port; and the PRW message is transmitted to each MCU board through the corresponding base station optical port.

[0063] To ensure that the PRW data of the maglev train-to-ground wireless communication system is sent from the base station BBU, the modified scheme is designed as follows Figure 3 shown.

[0064] Specifically, a system for shortening the communication delay between the vehicle and the ground on a high-speed maglev is provided. The system for shortening the communication delay between the vehicle and the ground on a high-speed maglev is used to implement the above-mentioned method for shortening the communication delay between the vehicle and the ground on a high-speed maglev. The system for shortening the communication delay between the vehicle and the ground on a high-speed maglev includes: a transmitting end and a receiving end.

[0065] The sending end includes: a simulated PRW message sending board, a PRW message receiving board and a 5G board.

[0066] 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.

[0067] The PRW message receiving board is connected to the 5G board and is used to transmit the PRW message to the 5G board.

[0068] The receiving end includes: a rooftop terrace and a first floor partition control room.

[0069] The rooftop platform includes several base stations; the 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; 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.

[0070] The first-floor partition control room includes: a number of MCU boards and PRW switch equipment.

[0071] 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.

[0072] In an exemplary embodiment, the analog PRW message sending board, the PRW message receiving board, and the 5G board all need to be connected to a GPS antenna. Specifically, the analog PRW message sending board is connected to the PRW message receiving board via a DB9 line on the board to transmit PRW messages; the PRW message receiving board is connected to the 5G board via a network port to transmit the PRW message to the 5G board.

[0073] In an exemplary embodiment, the receiving end: the base station BBU retrieves the PRW data (UDP message) uploaded by the vehicle terminal, which starts with 0x817F and has a length of 32 bytes. When starting the station, a socket is established, the network card (base station optical port) is bound, and the PDCP (Packet Data Convergence Protocol) layer checks that it is a udp protocol and the flag is 0x817f. It uses the socket bound to the second optical port to send it to the target ip. This target ip is parsed from the ul data ip header. The number with the flag 0x817F is directly forwarded to the second optical port of the base station and no longer to the core network. The role of the core network is mainly to manage the access rights of terminal devices (such as mobile phones and IoT devices) to the network to ensure that legitimate users can use network services. Through SIM cards or similar authentication mechanisms (such as IMSI, EAP-AKA protocols, etc.), user identities are verified to prevent unauthorized users from accessing. Confirm whether the terminal device meets the access requirements of the network. Therefore, some user control signaling, session management, mobility management, and external network communication data must pass through the core network. However, local communication (Local Breakout), such as direct communication between devices (D2D, Device-to-Device), or short-distance communication between close devices, can be completed directly at the base station (eNodeB / gNodeB) or edge device without the need for core network transfer. 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, latency is saved and the time it takes for the data to reach the core network is saved.

[0074] The data message format is as follows Figure 4It should be noted that the vehicle terminal unicasts PRW messages to multiple MCUs respectively, and the BBU only forwards transparently without adding fields for the time being. The vehicle terminal information is added to the valid data by the terminal test.

[0075] In an exemplary embodiment, the system for shortening vehicle-ground communication delay in high-speed maglev also includes: a three-story machine room.

[0076] The three-story computer room includes: core switch equipment and a core network.

[0077] 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.

[0078] The BBU 10G optical port 1 (SFP1) is connected to the core network, and the original normal services are still sent to the core network. Figure 3 As shown in the right part, the data passes through the physical layer, layer 2, layer 3, and finally the core switch, and then to the server of the core network. The PRW data is directly output from the BBU's 10G optical port 2 (SFP2) and connected to the PRW switch device. The data can save the processing time of layer 2, layer 3 and the core network.

[0079] In an exemplary embodiment, the system for shortening vehicle-ground communication delay in high-speed maglev further includes: a host computer.

[0080] The host computer is connected to the MCU board through a network port, and is used to receive and display the PRW message.

[0081] The PRW switch device is connected to the MCU board through a network cable to send PRW messages to the MCU board (traction); the MCU board sends data to the host computer for display through the network port. The PRW interface conversion device identifies different base stations through the BBU IP.

[0082] 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 a high-speed maglev. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more embodiments of the device for shortening the vehicle-ground communication delay on a high-speed maglev provided below can refer to the limitations of the method for shortening the vehicle-ground communication delay on a high-speed maglev above, and will not be repeated here.

[0083] In an exemplary embodiment, Figure 5 As shown, a device for shortening the vehicle-ground communication delay on a high-speed maglev is provided, and the device for shortening the vehicle-ground communication delay on a high-speed maglev includes the following modules.

[0084] The PRW message acquisition module M1 is used to acquire the PRW message.

[0085] The search module M2 is used to search 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.

[0086] The judgment module M3 is used to judge whether the protocol and the flag of the PRW message are correct, and obtain a first judgment result.

[0087] The normal service processing module M4 is used to process the service as normal when the first judgment result is no.

[0088] The forwarding module M5 is used for forwarding the PRW message to the corresponding base station optical port by using a socket when the first judgment result is yes; and transmitting the PRW message to each MCU board through the corresponding base station optical port.

[0089] In an exemplary embodiment, a computer device is provided. The computer device may be a server or a terminal. The internal structure diagram thereof may be as follows: Figure 6 As shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. 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. 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 an external device. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a method for shortening the vehicle-to-ground communication delay on a high-speed maglev is implemented.

[0090] Those skilled in the art will understand that Figure 6 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0091] In an exemplary embodiment, a computer device is further provided, including a memory and a processor, wherein a computer program is stored in the memory, and the above-mentioned method embodiments are implemented when the processor executes the computer program.

[0092] 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.

[0093] 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.

[0094] 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 used 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 must comply with relevant regulations.

[0095] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and 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 embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. 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 may be in various forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM).

[0096] The database involved in each embodiment provided in this application 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., but is not limited thereto. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but is not limited thereto.

[0097] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, 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, they should be considered to be within the scope of this specification.

[0098] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. At the same time, for those skilled in the art, according to the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this 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 using a socket; and the PRW message is transmitted to each MCU board through the corresponding base station optical port.

2. The method for shortening vehicle-ground communication delay in high-speed maglev according to claim 1, characterized in that: If the judgment result is no, the normal business process will be followed, 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.

3. 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 according to claim 1 or 2, 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.

4. The system for shortening vehicle-ground communication delay in high-speed maglev according to claim 3 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.

5. The system for shortening vehicle-ground communication delay in high-speed maglev according to claim 3 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.

6. The system for shortening vehicle-ground communication delay in high-speed maglev according to claim 3 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.

7. 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 or 2, 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 business processing module, used for processing the business as normal when the first judgment result is no; 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.

8. 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-to-ground communication delay in high-speed maglev as described in claim 1 or 2.

9. 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 or 2 is implemented.

10. 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 or 2 is implemented.

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