Public and private network integrated communication locomotive radio based on wireless transmission platform and its implementation method

Abstract

A public-private network converged communication locomotive radio station based on a wireless transmission platform and its implementation method belong to the technical field of wireless communication locomotive radio stations. The locomotive radio host is connected to a multi-mode onboard antenna via LTE-R antenna cable I, LTE-R antenna cable II, 5G / LTE antenna cable I, 5G / LTE antenna cable II, Beidou antenna cable, 450M / 400M antenna cable, and Wi-Fi antenna cable, and is connected to operation display terminal I and operation display terminal II via network cables. The public-private network converged communication locomotive radio station contains a control program for implementing wireless public-private network converged communication for train dispatching, wireless public-private network converged communication for crossing operations, and wireless public-private network converged communication for integrated management and control. Operation display terminal I and operation display terminal II are used for driver operation. The multi-mode onboard antenna is a fixed combination antenna. This invention effectively solves the problem of multiple wireless communication networks in railway wireless communication.

Description

Technical Field

[0001] The present invention belongs to the technical field of wireless communication locomotive radios, and in particular relates to a public-private network integrated communication locomotive radio based on a wireless transmission platform and an implementation method thereof. Background Art

[0002] Wireless locomotive radios are widely used in local railway dispatching and control systems. Currently, multiple communication standards exist on railway lines, including traditional 450MHz wireless communication, GSMR wireless communication, and the increasingly popular 400MHz digital communication, LTE private networks, and 5G public and private networks. Existing locomotive radios only support one or two communication standards and cannot immediately switch to another when problems arise with one standard, lacking converged communication capabilities.

[0003] Currently, state-owned railway locomotive radios rely on 450M and GSMR communication networks for voice and data communications, while local railway locomotive radios rely on 450M and LTE-R networks for voice and data communications. Neither supports 5G networks and cannot operate on 5G-only sections. Furthermore, locomotive radios can only operate on one network at a time. If the current network fails, communication functions will also fail, impacting driving safety. Therefore, a technical solution is needed to address network adaptation issues with a converged communication locomotive radio that supports multiple communication standards, can autonomously select the optimal network, or quickly switch to a suboptimal network when a network anomaly occurs, ensuring wireless communication quality. This technical solution is a topic of research for industry technicians. Summary of the Invention

[0004] In view of the current state of the art and the problem that existing locomotive radios cannot simultaneously support multiple networks including 5G, and cannot quickly switch to a suboptimal network when a single network fails, the present invention provides a public-private network integrated communication locomotive radio based on a wireless transmission platform and an implementation method, which is used to realize the functions of wireless train dispatching public-private network integrated communication, wireless public-private network integrated communication for crossing services, and wireless public-private network integrated communication for integrated management and control; the present invention effectively solves the problem of multiple wireless communication networks for railway wireless communications.

[0005] The technical solution adopted by the present invention is: a public-private network integrated communication locomotive radio based on a wireless transmission platform, the public-private network integrated communication locomotive radio including a locomotive radio host, a multi-mode vehicle-mounted antenna, an operation display terminal I and an operation display terminal II; the locomotive radio host is connected to the multi-mode vehicle-mounted antenna via LTE-R antenna cable I, LTE-R antenna cable II, 5G / LTE antenna cable I, 5G / LTE antenna cable II, Beidou antenna cable, 450M / 400M antenna cable, and WIFI antenna cable, and is respectively connected to operation display terminal I and operation display terminal II via network cables;

[0006] The locomotive radio host circuit is that the onboard wireless transmission platform is connected to the CIR device via a network cable;

[0007] The vehicle-mounted wireless transmission platform circuit is as follows: a 110V to 13.8V power supply unit I supplies power to the main control unit I, the main control unit II, the 5G / LTE unit I, the 5G / LTE unit II, the WIFI unit, the Beidou satellite unit, the LTE-R unit I and the LTE-R unit II respectively; the main control unit I, the main control unit II, the 5G / LTE unit I, the 5G / LTE unit II, the WIFI unit, the Beidou satellite unit, the LTE-R unit I and the LTE-R unit II are respectively connected to the switching unit I through a network cable;

[0008] The CIR device circuit is a 110V to 13.8V power supply unit II that supplies power to the main control unit III, recording unit, interface unit, and 450M / 400M unit respectively. The main control unit III, recording unit, interface unit, and 450M / 400M unit are connected to the switching unit II via a network cable.

[0009] The CIR interface unit circuit is as follows: a 13.8V to 3.3V power supply chip supplies power to the storage chip, MCU and switch chip respectively; a 13.8V to 48V power supply chip supplies power to the POE chip; the switch chip is bidirectionally connected to the MCU through the RMII interface and to the PHY chip through the MDI interface; the MCU is bidirectionally connected to the storage chip through the SPI interface; and the POE chip is unidirectionally connected to the PHY chip through the POE interface.

[0010] A method for implementing a public-private network integrated communication locomotive radio based on a wireless transmission platform, the steps are as follows:

[0011] Step 1: Turn on the public-private network integrated communication locomotive radio equipment;

[0012] Step 2: The public / private network integrated communication locomotive radio determines whether the current network is a 5G / LTE public network. If so, proceed to step 5; if not, proceed to step 3.

[0013] Step 3: The public-private network integrated communication locomotive radio determines whether the current network is an LTE-R private network. If so, proceed to step 5; if not, proceed to step 4.

[0014] Step 4: The public-private network integrated communication locomotive radio enters the 450M / 400M communication mode;

[0015] Step 5: The driver operates the public-private network integrated communication locomotive radio through the operation display terminal I or the operation display terminal II;

[0016] Step 6: The public-private network integrated communication locomotive radio receives a voice or data service command;

[0017] Step 7: Connect the public and private network integrated communication locomotive radio to the WIFI network;

[0018] Step 8: The public-private network integrated communication locomotive radio determines whether the current service is wireless train modulation service. If so, the wireless train modulation service is executed. If not, step 9 is executed.

[0019] Step 9: The public-private network integrated communication locomotive radio determines whether the current service is a road crossing wireless communication service. If so, the road crossing wireless communication service is executed. If not, step 10 is executed.

[0020] Step 10: The public-private network integrated communication locomotive radio determines whether the current service is an integrated control wireless communication service. If so, the integrated control wireless communication service is executed. If not, step 5 is executed.

[0021] The above steps enable 450MHz / 400MHz communication, LTE-R private network communication, 5G / LTE public network communication, and WIFI communication.

[0022] Through the above steps, wireless public and private network integrated communication for train dispatching, wireless public and private network integrated communication for road crossing business, and wireless public and private network integrated communication for integrated management and control can be realized.

[0023] The method for executing the wireless train modulation service described in step eight is that after the public-private network integrated communication locomotive radio determines that the current service is a wireless train modulation service, it uses the service command to distinguish which type of train modulation service is initiated. If it is a voice call, the call service is initiated to the station radio through the currently selected channel. If it is a data service, the data information is sent to the station radio through the currently selected channel.

[0024] The method for executing the level crossing wireless communication service described in step nine is that after the public-private network integrated communication locomotive radio determines that the current service is a level crossing wireless communication service, it uses service commands to distinguish what type of level crossing service is initiated. If it is a level crossing video service, a level crossing video application is sent to the corresponding level crossing through the current network. After the level crossing station responds, it sends the current level crossing video to the public-private network integrated communication locomotive radio. If it is a level crossing voice service, a voice call is initiated to the level crossing personnel through the current network.

[0025] The method for executing the integrated control wireless communication service described in step ten is that after the public-private network integrated communication locomotive radio determines that the current service is an integrated control wireless communication service, it sends the status information of the public-private network integrated communication locomotive radio to the integrated control platform through the current network, including the geographical location, vehicle speed, running direction, current network and other information.

[0026] The beneficial effects of the present invention include: a public-private network converged communication locomotive radio based on a wireless transmission platform achieves converged communication between public and private networks for wireless train dispatching, converged communication between public and private networks for road crossing operations, and converged communication between public and private networks for integrated management and control. This invention effectively solves the problem of multiple wireless communication networks in railway wireless communications. Currently, state-owned railway locomotive radios support 450M and GSMR networks, while local railway locomotive radios support 450M and LTE-R networks. Locomotive radios can only operate on one network at a time. Local and state-owned railway locomotive radios are two different models, requiring interchangeable radios depending on the location of use. The present invention supports both state-owned and local railways. The locomotive radio of the present invention can also be used in sections supporting 5G networks. The present invention can operate simultaneously on multiple networks, including 5G / LTE, LTE-R, and 450M / 400M, selecting the most optimal network for data and voice communications. If the current network fails, it can quickly switch to the next-best network for operation. This effectively unifies device status and ensures that a single network failure does not affect data and voice communications between the driver and the ground, thus ensuring driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 To realize the circuit connection block diagram of the public-private network integrated communication locomotive radio station of the present invention;

[0028] Figure 2 This is a circuit connection block diagram of the locomotive radio host of the present invention;

[0029] Figure 3 This is a circuit connection block diagram of the vehicle-mounted wireless transmission platform of the present invention;

[0030] Figure 4 This is a block diagram of the CIR circuit connection of the present invention;

[0031] Figure 5 A circuit connection block diagram of the interface unit of the CIR of the present invention;

[0032] Figure 6 A circuit connection block diagram of an embodiment of the present invention;

[0033] Figure 7 This is a flow chart of an implementation method of an embodiment of the present invention. DETAILED DESCRIPTION

[0034] like Figure 1 As shown, the public-private network integrated communication locomotive radio based on the wireless transmission platform includes a locomotive radio host, an operation display terminal I, an operation display terminal II and a multi-mode vehicle antenna;

[0035] The public-private network integrated communication locomotive radio contains a control program for realizing the functions of wireless train dispatching public-private network integrated communication, wireless public-private network integrated communication for road crossing business, and wireless public-private network integrated communication for integrated management and control.

[0036] Operation display terminal I is used for operation by the driver at the A end of the locomotive (the front or rear of the locomotive);

[0037] Operation display terminal II is used for operation by the driver at the B end of the locomotive (the tail or the head of the locomotive);

[0038] The multi-mode vehicle-mounted antenna is a fixed combination antenna that can simultaneously support the 450M band, LTE-R band, 5G band, and WiFi band.

[0039] like Figure 2 As shown, the locomotive radio host includes an on-board wireless transmission platform and a CIR device. The on-board wireless transmission platform integrates multiple channels such as LTE-R, 5G / LTE, and WiFi, and sends information on whether the channel is available to the CIR device. The CIR device integrates 450M communication function and can access LTE-R, 5G / LTE, and WiFi networks through the on-board wireless transmission platform. It is equipped with an operation display terminal for voice and data communication between the driver and the ground.

[0040] like Figure 3 As shown, the vehicle-mounted wireless transmission platform includes a 110V to 13.8V power supply unit I, a main control unit I, a main control unit II, a 5G / LTE unit I, a 5G / LTE unit II, a WIFI unit, a BeiDou satellite unit, an LTE-R unit I, an LTE-R unit II, and a switching unit I;

[0041] The 110V to 13.8V power supply unit I is used to power each unit of the vehicle-mounted wireless transmission platform; the main control unit I is used to collect status information of each unit of the vehicle-mounted wireless transmission platform and control the active and standby status of each unit; the main control unit II and the main control unit I are redundant backups of each other; the 5G / LTE unit I is used to connect to the 5G public and private network; the 5G / LTE unit II and the 5G / LTE unit I are redundant backups of each other; the WIFI unit is used to connect to the wifi network; the Beidou satellite unit is used to obtain Beidou satellite positioning information; the LTE-R unit I is used to connect to the LTE-R network; the LTE-R unit II and the LTE-R unit I are backups of each other; the switching unit I is used to connect each unit via an Ethernet network.

[0042] like Figure 4 As shown, the CIR device includes a 110V power supply unit, a control unit, a recording unit, a CIR interface unit, a 450M / 400M unit, and a switching unit.

[0043] The 110V to 13.8V power supply unit is used to power each CIR unit; the control unit is used to determine and select the current optimal network channel, and can switch to the suboptimal network to work when the optimal network fails; the recording unit is used to record equipment operation information and driver conversations; the CIR interface unit is used to connect the CIR to the on-board wireless transmission platform; the 450M / 400M unit is used to access the 450M / 400M channel; the switching unit is used to connect the CIR units to Ethernet.

[0044] like Figure 5 As shown, the CIR interface unit includes a 13.8V to 3.3V power supply chip (TPS54620RHLR), a memory chip (MX66L51235F), an MCU (LPC4337), a 13.8V to 48V power supply chip (UM78514), a switch chip (KSZ8784CNX), a POE chip (IP804), and a PHY chip (HX6096).

[0045] The 13.8V to 3.3V power supply chip is used to power each chip; the memory chip is used to store the interface unit operation log; the MCU is used to configure the working mode of each chip and report the working status of the interface unit to the control unit; the 13.8V to 48V power supply chip is used to convert 13.8V to 48V and power the POE chip; the switch chip is used to convert the RMII interface to the PHY interface; the POE chip is used to provide external power supply for the network port; and the PHY chip is used to realize the network transformer function.

[0046] Example 1, as Figure 6 、 Figure 7 As shown, a method for implementing a public-private network integrated communication locomotive radio based on a wireless transmission platform is used for connecting the public-private network integrated communication locomotive radio to a ground station radio, MCX server, integrated management and control platform, and crossing station through a 450M channel, 5G / LTE public network, LTE private network, and WIFI. The public-private network integrated communication locomotive radio control program performs the following operations:

[0047] Turn on the public-private network integrated communication locomotive radio equipment;

[0048] The public-private network integrated communication locomotive radio selects the network in the order of priority of 5G / LTE, LTE-R, and 450M / 400M;

[0049] The vehicle-mounted wireless transmission platform's main control units I and II are connected to the 5G / LTE unit I, 5G / LTE unit II, LTE-R unit I, and LTE-R unit II through the switching unit. They obtain real-time status information of the 5G / LTE public network and LTE-R private network, and upload the status information to the CIR's main control unit III through the CIR's interface unit. The CIR's main control unit III selects the network based on the uploaded status information, determining whether it is the 5G / LTE public network or the LTE-R private network. The vehicle-mounted wireless transmission platform's main control units I and II serve as redundant hot standbys for each other. The 5G / LTE unit I and 5G / LTE unit II serve as redundant hot standbys for each other, and the LTE-R unit I and LTE-R unit II serve as redundant hot standbys for each other. The Beidou satellite unit of the vehicle-mounted wireless transmission platform provides positioning and clock services for the public-private network integrated communication locomotive radio.

[0050] If there is no signal on either the 5G / LTE public network or the LTE-R private network, the public / private network converged communication locomotive radio connects to the station radio via the CIR 450M / 400M unit using the 450M / 400M channel;

[0051] The driver operates the public-private network integrated communication locomotive radio through the operation display terminal I or the operation display terminal II, and initiates voice or data communication services through the currently selected network;

[0052] The public-private network integrated communication locomotive radio receives voice or data service commands;

[0053] The public and private network integrated communication locomotive radio is connected to the WIFI network through the WIFI unit of the vehicle-mounted wireless transmission platform;

[0054] When the locomotive is running in the 450M / 400M section, the public-private network integrated communication locomotive radio and the station radio communicate directly through the 450M / 400M channel;

[0055] When a locomotive is operating in an LTE-R private network section, the public-private network converged communication locomotive radio and the station radio register with the MCX server via the LTE-R private network. After registration is complete, the public-private network converged communication locomotive radio and the station radio obtain each other's IP information and audio and video codec information through MCX when communicating, and communicate by negotiating a unified codec method.

[0056] When the locomotive is running in the 5G / LTE public network section, the public-private network converged communication locomotive radio and the station radio register with the MCX server through the 5G / LTE public network. After registration is completed, when the public-private network converged communication locomotive radio and the station radio communicate, they obtain each other's IP information and audio and video codec information through MCX, and communicate by negotiating and agreeing on the codec method;

[0057] If multiple network systems exist on the current line at the same time, the public-private network integrated communication locomotive radio will carry out audio and video communication according to the network priority order of 5G / LTE public network, LTE-R private network, and 450M / 400M according to the current network situation;

[0058] When both the 5G / LTE public network and the LTE-R private network exist, the public-private network integrated communication locomotive radio registers with the MCX through both networks at the same time. After successful registration, during subsequent communication, if the 5G / LTE public network has poor network signal, the public-private network integrated communication locomotive radio sends audio and video information to the station radio through both the 5G / LTE public network and the LTE-R private network. If the 5G / LTE public network is disconnected, the public-private network integrated communication locomotive radio quickly switches to sending audio and video information to the station radio through the LTE-R private network.

[0059] When the same information is sent via the 5G / LTE public network and the LTE-R private network, the information has a deduplication flag, and the station radio station can filter out the same data through the deduplication flag;

[0060] After the public-private network integrated communication locomotive radio determines that the current service is a wireless train modulation service, it uses service commands to distinguish which type of train modulation service is initiated. If it is a voice call, the call service is initiated to the station radio through the currently selected channel. If it is a data service, the data information is sent to the station radio through the currently selected channel.

[0061] After the public-private network integrated communication locomotive radio determines that the current service is a level crossing wireless communication service, it uses service commands to distinguish what type of level crossing service is initiated. If it is a level crossing video service, a level crossing video request is sent to the corresponding level crossing through the current network. After the level crossing station responds, it sends the current level crossing video to the public-private network integrated communication locomotive radio. If it is a level crossing voice service, a voice call is initiated to the level crossing personnel through the current network.

[0062] After the public-private network converged communication locomotive radio determines that the current wireless communication service is integrated control, it reports the status information of the public-private network converged communication locomotive radio to the integrated control platform in real time. The integrated control platform can obtain the status information of the public-private network converged communication locomotive radio and the station radio in real time, including the geographic location information, speed, running direction, currently selected communication network and other information of the public-private network converged communication locomotive radio. When the public-private network converged communication locomotive radio or the station radio has an abnormality, the integrated control platform will issue a prompt to the management personnel. The integrated control platform can also perform scheduled software update tasks for the station radio and the public-private network converged communication locomotive radio through the 5G / LTE public network or LTE-R private network.

Claims

1. A method for implementing a public-private network integrated communication locomotive radio station based on a wireless transmission platform, characterized in that: The public-private network integrated communication locomotive radio includes a locomotive radio host, a multi-mode on-board antenna, an operation display terminal I, and an operation display terminal II. The locomotive radio host is connected to the multi-mode on-board antenna through LTE-R antenna cable I, LTE-R antenna cable II, 5G / LTE antenna cable I, 5G / LTE antenna cable II, Beidou antenna cable, 450M / 400M antenna cable, and WIFI antenna cable, and is connected to the operation display terminal I and operation display terminal II through network cables. The locomotive radio host circuit is that the onboard wireless transmission platform is connected to the CIR device via a network cable; The vehicle-mounted wireless transmission platform circuit is as follows: a 110V to 13.8V power supply unit I supplies power to the main control unit I, the main control unit II, the 5G / LTE unit I, the 5G / LTE unit II, the WIFI unit, the Beidou satellite unit, the LTE-R unit I and the LTE-R unit II respectively; the main control unit I, the main control unit II, the 5G / LTE unit I, the 5G / LTE unit II, the WIFI unit, the Beidou satellite unit, the LTE-R unit I and the LTE-R unit II are respectively connected to the switching unit I through a network cable; The CIR device circuit is as follows: the 110V to 13.8V power supply unit II supplies power to the main control unit III, the recording unit, the CIR interface unit, and the 450M / 400M unit respectively. The main control unit III, the recording unit, the interface unit, and the 450M / 400M unit are connected to the switching unit II via a network cable. The CIR interface unit circuit is as follows: a 13.8V to 3.3V power supply chip supplies power to the memory chip, MCU, and switch chip respectively; a 13.8V to 48V power supply chip supplies power to the POE chip; the switch chip is bidirectionally connected to the MCU via the RMII interface and to the PHY chip via the MDI interface; the MCU is bidirectionally connected to the memory chip via the SPI interface; and the POE chip is unidirectionally connected to the PHY chip via the POE interface; The implementation steps are as follows: Step 1: Turn on the public-private network integrated communication locomotive radio equipment; Step 2: The public / private network integrated communication locomotive radio determines whether the current network is a 5G / LTE public network. If so, proceed to step 5; if not, proceed to step 3. Step 3: The public-private network integrated communication locomotive radio determines whether the current network is an LTE-R private network. If so, proceed to step 5; if not, proceed to step 4. Step 4: The public-private network integrated communication locomotive radio enters the 450M / 400M communication mode; Step 5: The driver operates the public-private network integrated communication locomotive radio through the operation display terminal I or the operation display terminal II; Step 6: The public-private network integrated communication locomotive radio receives a voice or data service command; Step 7: Connect the public and private network integrated communication locomotive radio to the WIFI network; Step 8: The public-private network integrated communication locomotive radio determines whether the current service is wireless train modulation service. If so, the wireless train modulation service is executed. If not, step 9 is executed. Step 9: The public-private network integrated communication locomotive radio determines whether the current service is a road crossing wireless communication service. If so, the road crossing wireless communication service is executed. If not, step 10 is executed. Step 10: The public-private network integrated communication locomotive radio determines whether the current service is an integrated control wireless communication service. If so, the integrated control wireless communication service is executed. If not, step 5 is executed. When both the 5G / LTE public network and the LTE-R private network exist, the public-private network integrated communication locomotive radio registers with the MCX through both networks at the same time. After successful registration, during subsequent communication, if the 5G / LTE public network has poor network signal, the public-private network integrated communication locomotive radio sends audio and video information to the station radio through both the 5G / LTE public network and the LTE-R private network. If the 5G / LTE public network is disconnected, the public-private network integrated communication locomotive radio quickly switches to sending audio and video information to the station radio through the LTE-R private network. When the same information is sent via the 5G / LTE public network and the LTE-R private network, the information has a deduplication flag, and the station radio uses the deduplication flag to filter out the same data; The above steps enable 450MHz / 400MHz communication, LTE-R private network communication, 5G / LTE public network communication, and WIFI communication. Through the above steps, wireless public and private network converged communication for train dispatching, wireless public and private network converged communication for road crossing services, and wireless public and private network converged communication for integrated management and control can be achieved; The method for executing the wireless train modulation service described in step 8 is that after the public-private network integrated communication locomotive radio determines that the current wireless train modulation service is in progress, it uses a service command to distinguish which type of train modulation service is to be initiated. If it is a voice call, the call service is initiated to the station radio through the currently selected channel. If it is a data service, the data information is sent to the station radio through the currently selected channel. The method for executing the road crossing wireless communication service described in step nine is that after the public-private network integrated communication locomotive radio determines that the current service is the road crossing wireless communication service, it uses a service command to distinguish which road crossing service is being initiated. If it is a road crossing video service, a road crossing video request is sent to the corresponding road crossing through the current network. After the road crossing station responds, it sends the current road crossing video to the public-private network integrated communication locomotive radio. If it is a road crossing voice service, a voice call is initiated to the road crossing personnel through the current network. The method for executing the integrated control wireless communication service described in step ten is that after the public-private network integrated communication locomotive radio determines that the current service is an integrated control wireless communication service, it sends the status information of the public-private network integrated communication locomotive radio to the integrated control platform through the current network, including the geographical location, vehicle speed, running direction, and current network information.

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