Fusion vehicle-mounted communication device for rail transit

Abstract

The invention relates to a fusion vehicle-mounted communication device for rail transit, and the device comprises a power unit which converts a DC power supply provided by a rail transit vehicle into a locomotive working voltage, and is electrically connected with each unit; the control unit is used for controlling network control access of the radio frequency unit and providing various network bearing service interfaces; the radio frequency unit is used for switching between a wired network and a wireless network based on trunking communication carried by a public network 4G / 5G or a next-generation wireless communication network so as to realize real-time transmission and conversion of data; the radio frequency antenna is connected with the radio frequency unit and is responsible for transmitting and receiving radio signals; and the operation terminal is used for operating software of the MCx service, realizing service connection through a network interface provided by the control unit, and realizing a cluster scheduling communication function. Compared with the prior art, based on the 4G / 5G broadband public network, safe audio and video fusion commanding and dispatching communication over the public network is provided for key communication users in movement, and the existing basic network construction investment cost is reduced.

Description

Technical Field

[0001] The present invention relates to the field of rail transit communication technology, and in particular to a fusion vehicle-mounted communication device for rail transit. Background Art

[0002] Traditional rail transit dispatching communications use TETRA narrowband clusters or B-TrunC broadband clusters to achieve train dispatching communications. With the development of communication technology and the shrinking of the TETRA narrowband cluster industry chain, B-TrunC broadband clusters, a fusion on-board communication device for rail transit, is a solution based on the 3GPP MCx series standards. It can provide audio and video fusion intelligent dispatching communications for key communication users on the move. It is based on 4G, 5G and next-generation communication networks or broadband wireless private networks, and provides dedicated services that meet the needs of rail transit train dispatching communications. Summary of the invention

[0003] The purpose of the present invention is to provide a fusion vehicle-mounted communication device for rail transit based on a public network from the perspective of long-term development.

[0004] The purpose of the present invention can be achieved by the following technical solutions:

[0005] A fusion vehicle-mounted communication device for rail transit, comprising:

[0006] A power supply unit, used to convert the DC power provided by the rail transit vehicle into the locomotive operating voltage and electrically connected to each unit;

[0007] A control unit is used to control the network control access of the radio frequency unit and provide a variety of network bearer service interfaces;

[0008] The radio frequency unit is based on the cluster communication carried by the public network 4G / 5G or the next-generation wireless communication network, and is used for conversion between wired networks and wireless networks to achieve real-time transmission and conversion of data;

[0009] RF antenna, connected to the RF unit, responsible for transmitting and receiving radio signals;

[0010] The operation terminal runs the MCx service software, realizes service connection through the network interface provided by the control unit, and realizes the cluster scheduling communication function.

[0011] As a preferred technical solution, the power supply unit converts the DC 110V or 24V provided by the rail transit vehicle into a DC 13.8V locomotive operating voltage used by each unit.

[0012] As a preferred technical solution, the control unit is an embedded ARM microcontroller.

[0013] As a preferred technical solution, the control unit is provided with an Ethernet port, a serial port and an analog audio interface.

[0014] As a preferred technical solution, the radio frequency unit adopts tunneling technologies including VPN, APN, VPDN and encryption and identity authentication methods to transmit data in the public network through a secure encrypted pipeline.

[0015] As a preferred technical solution, the radio frequency unit uses a dedicated wireless broadband network that is independently constructed or sliced ​​from a public network to implement end-to-end virtual private network services.

[0016] As a preferred technical solution, the radio frequency unit also supports cluster communication carried by narrowband cluster TETRA, DMR or broadband communication LTE-M.

[0017] As a preferred technical solution, the RF antenna is installed on the roof and bottom of the train and is connected to the RF unit through a POI combiner platform.

[0018] As a preferred technical solution, the operation terminal is a large-size touch-screen operation terminal device.

[0019] As a preferred technical solution, the operation terminal is provided with a handset handle for conversation.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The integrated vehicle-mounted communication device for rail transit proposed in the present invention accesses the cluster communication system through a broadband wireless network, realizes the integrated dispatching communication of broadband cluster and TETRA narrowband cluster through the interconnection gateway of the core network, and supports the one-touch function. The key communication standard MCx of 3GPP is adopted, which is fully compatible with 4G / 5G and the mainstream technology of the next generation wireless communication network, and can be completely dependent on the public network or the combination of public and private networks, and can be constructed as the application layer on the 4G / 5G network. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the connection of components of the integrated vehicle-mounted communication device for rail transit of the present invention;

[0023] Figure 2 This is a front view of the integrated vehicle-mounted communication device for rail transit of the present invention;

[0024] As shown in the figure: 101, power supply unit, 102, control unit, 103, radio frequency unit, 104, radio frequency antenna, 105, operation terminal. DETAILED DESCRIPTION

[0025] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0026] Example 1

[0027] A converged on-board communication device for rail transit, based on 4G or 5G broadband public network, provides secure professional communications on the public network, and can also support self-built private network to carry key communication services, and can provide audio and video converged command and dispatch communications for rail transit train drivers. The key communication standard MCx adopted by 3GPP is fully compatible with 4G / 5G mainstream technology and can be built as an application layer on the 4G / 5G network. The key business software of the device runs on standard Android or Hongmeng smart terminals, providing mission-critical services based on 3GPP to meet the dispatching function requirements of rail transit cluster communications.

[0028] The device of the present invention is as follows Figure 1 As shown, a fusion vehicle-mounted communication device for rail transit is mainly composed of a power supply unit 101, a control unit 102, a radio frequency unit 103, a radio frequency antenna 104 and an operation terminal 105.

[0029] The power supply unit 101 can convert the DC 110V or 24V provided by the rail transit vehicle into a DC 13.8V locomotive operating voltage used by each unit, and supply power to units such as the control unit, the radio frequency unit and the operation terminal.

[0030] The control unit 102 is the control core of the host, controls the network control access of the radio frequency unit, and provides a variety of network bearer service interfaces for the vehicle to use. Using an embedded ARM microcontroller and an embedded Linux operating system, the controller integrates an Ethernet port, a serial port, and an analog audio interface to connect with other professional interfaces on the vehicle. The software running on the control unit 102 controls the network control access process of the radio frequency unit 103.

[0031] The radio frequency unit 103 is used for data conversion between the wired network and the wireless network to realize real-time data transmission. The radio frequency unit 103 can select narrowband cluster TETRA, DMR or broadband communication LTE-M, public network 4G / 5G or cluster communication carried by the next generation wireless communication network, and transmit data in the public network through a secure encrypted pipeline through tunnel technologies such as VPN, APN, VPDN, encryption, identity authentication and other methods. The radio frequency unit can also choose a dedicated wireless broadband network that is independently built or sliced ​​from the public network to realize end-to-end virtual private network services to ensure the reliability of its services.

[0032] The radio frequency unit 103 uses a 5G Internet access module with a Mini PCIe standard interface to achieve data conversion between broadband wired networks and wireless networks, and to achieve real-time data transmission. The radio frequency unit selects the public 5G mobile communication network by default, connects to the cluster core network through encrypted APN tunnel technology for encryption and authentication, and achieves reliable transmission of cluster service data.

[0033] The RF antenna 104 is a Massive MIMO antenna of the 5G frequency band, which is generally installed at two locations, the roof and the bottom of the vehicle. Through the POI combiner platform, it provides antenna access function for multiple devices on the vehicle.

[0034] The operation terminal 105 runs the dispatch communication software based on the MCx service to realize the cluster dispatch communication function. Figure 2 As shown in the figure, it is a large-size touch-screen operation terminal device for Android or Hongmeng operating system, which provides a handset handle for calls. The operation terminal is the human-machine operation interface between the driver and the integrated vehicle communication device, supports both touch and key operation modes, and has high usability.

[0035] The present invention supports the integrated communication between TETRA and the next-generation 5G PTT, and can well meet the smooth transition from TETRA narrowband cluster to 5G broadband cluster. During the transformation and implementation process, it neither affects the daily operation of rail transit nor changes the dispatching and operating communication mode. After the transformation is completed, it can protect the existing asset investment and continue to use the 5G PTT broadband cluster scheduling function.

[0036] This solution has the advantages of low network construction cost, convenient remote maintenance, support for narrowband TETRA and broadband cluster interconnection, and support for external expert encrypted access interconnection.

[0037] The 3GPP MCx standard adopted in this solution is based on the 5G standard. It follows the evolution of international mainstream standards and is more internationally applicable. It is easier to achieve interconnection and interoperability than traditional cluster standards such as TETRA and B-TrunC.

[0038] The 5G PTT converged communication of this solution is a solution launched based on the 3GPP MCPTT series standards. It can provide audio and video converged command and dispatch communications for key communication users on the move. It is based on 4G or 5G broadband public networks, providing secure professional communications on the public network, reducing the investment cost of existing basic network construction.

[0039] This solution has higher availability. The 5GPTT service runs in a virtualized environment, allowing the use of virtual resources without having to take into account the fault tolerance of hardware components.

[0040] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A fusion vehicle-mounted communication device for rail transit, characterized in that: include: A power supply unit (101), used to convert the DC power provided by the rail transit vehicle into a locomotive operating voltage, and electrically connected to each unit; A control unit (102) is used to control the network control access of the radio frequency unit (103) and provide a variety of network bearer service interfaces; A radio frequency unit (103), based on cluster communication carried by a public 4G / 5G network or a next-generation wireless communication network, is used for conversion between a wired network and a wireless network to achieve real-time transmission and conversion of data; A radio frequency antenna (104), connected to the radio frequency unit (103) and responsible for transmitting and receiving radio signals; The operation terminal (105) runs the software of the MCx service, realizes the service connection through the network interface provided by the control unit (102), and realizes the cluster scheduling communication function.

2. The integrated vehicle-mounted communication device for rail transit according to claim 1, characterized in that: The power supply unit (101) converts the DC 110V or 24V provided by the rail transit vehicle into a DC 13.8V locomotive operating voltage used by each unit.

3. The integrated vehicle-mounted communication device for rail transit according to claim 1, characterized in that: The control unit (102) is an embedded ARM microcontroller.

4. The integrated vehicle-mounted communication device for rail transit according to claim 3, characterized in that: The control unit (102) is provided with an Ethernet port, a serial port and an analog audio interface.

5. The integrated vehicle-mounted communication device for rail transit according to claim 1, characterized in that: The radio frequency unit (103) adopts tunnel technologies including VPN, APN and VPDN as well as encryption and identity authentication methods to transmit data in the public network through a secure encrypted pipeline.

6. The integrated vehicle-mounted communication device for rail transit according to claim 5, characterized in that: The radio frequency unit (103) uses a dedicated wireless broadband network that is independently constructed or sliced ​​from a public network to implement end-to-end virtual private network services.

7. The integrated vehicle-mounted communication device for rail transit according to claim 1, characterized in that: The radio frequency unit (103) also supports cluster communication carried by narrowband cluster TETRA, DMR or broadband communication LTE-M.

8. The integrated vehicle-mounted communication device for rail transit according to claim 7, characterized in that: The radio frequency antenna (104) is installed on the roof and the bottom of the train and is connected to the radio frequency unit (103) via a POI combiner platform.

9. The integrated vehicle-mounted communication device for rail transit according to claim 1, characterized in that: The operation terminal (105) is a large-size touch-screen operation terminal device.

10. The integrated vehicle-mounted communication device for rail transit according to claim 9, characterized in that: The operation terminal (105) is provided with a handset handle for conversation.

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