Fusion vehicle-mounted communication device for rail transit
By adopting the 3GPP standard MCx communication standard and integrating it with 4G/5G networks, a converged vehicle communication device is provided, which solves the problem that traditional devices are difficult to be compatible with new networks, and realizes low-cost seamless transition and audio and video converged scheduling communication.
Patent Information
- Application Number
- CN202422870805.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-11-22
AI Technical Summary
Traditional rail transit communication devices are difficult to be compatible with the latest 4G/5G networks, resulting in high communication system upgrade costs and an inability to achieve a smooth transition.
The MCx communication standard, which adopts the 3GPP standard and combines 4G/5G networks, provides a converged vehicle communication device through the integration of public and private networks. The device includes a power supply unit, a service interface unit, a radio frequency unit, and an operation terminal. It supports multiple network interfaces and encrypted transmission, and achieves a smooth transition from TETRA narrowband to 5G broadband.
It achieves seamless compatibility between the rail transit communication system and 4G/5G networks, reduces update costs, and enables audio and video fusion scheduling communication without affecting daily operations, thus protecting existing asset investments.
Smart Images
Figure CN223626003U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rail transit communication technology, and in particular to a fusion vehicle-mounted communication device for rail transit. Background Technology
[0002] Traditional rail transit dispatch communication uses TETRA narrowband trunking or B-TrunC broadband trunking to achieve train dispatch communication. With the development of communication technology and the shrinking of the TETRA narrowband trunking industry chain, B-TrunC broadband trunking, a converged on-board communication device for rail transit, is a solution based on the 3GPP MCx series standards. It can provide intelligent dispatch communication with converged audio and video for key communication users on the move. It is based on 4G, 5G and next-generation communication networks or broadband wireless private networks to provide dedicated services that meet the needs of rail transit train dispatch communication. Utility Model Content
[0003] The purpose of this invention, from a long-term development perspective, is to provide a converged onboard communication device for rail transit based on a public network.
[0004] The objective of this utility model can be achieved through the following technical solutions:
[0005] A converged on-board communication device for rail transit, the converged on-board communication device comprising:
[0006] The power supply unit is used to convert the DC power supplied by the rail transit vehicle into the locomotive's operating voltage and is electrically connected to each unit.
[0007] The service interface unit is equipped with various network bearer service interfaces;
[0008] The radio frequency unit is a public network access module, equipped with a radio frequency antenna and connected to the service interface unit for signal transmission.
[0009] The operating terminal is a communication terminal that supports the 3GPP communication standard MCx and is connected to the service interface unit via signals.
[0010] As a preferred technical solution, the power supply unit includes a DC / DC converter that converts 110V DC to 13.8V DC.
[0011] As a preferred technical solution, the power supply unit includes a DC / DC converter that converts 24V DC to 13.8V DC.
[0012] As a preferred technical solution, the service interface unit includes an embedded ARM microcontroller.
[0013] As a preferred technical solution, the service interface unit is equipped with an Ethernet port, a serial port, and an analog audio interface.
[0014] As a preferred technical solution, the radio frequency unit is a 5G Internet access module with a Mini PCIe standard interface.
[0015] As a preferred technical solution, the radio frequency antenna is a 5G band Massive MIMO antenna.
[0016] As a preferred technical solution, the radio frequency antenna is installed on the roof and under the train and connected to the radio frequency unit through the POI combiner platform.
[0017] As a preferred technical solution, the operating terminal is a large-size touchscreen operating terminal device.
[0018] As a preferred technical solution, the operating terminal is equipped with a handset for making calls.
[0019] Compared with the prior art, the present invention has the following beneficial effects:
[0020] The integrated onboard communication device for rail transit proposed in this invention uses the 3GPP key communication standard MCx in its call terminal, which is fully compatible with the mainstream technologies of 4G / 5G and next-generation wireless communication networks in the radio frequency unit. It can be built entirely on the public network or a combination of public and private networks as an application layer on the 4G / 5G network. It accesses the trunking communication system through a broadband public wireless network, and realizes integrated scheduling communication between broadband trunking and TETRA narrowband trunking through the interconnection gateway of the core network, supporting one-button communication. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the component connections for the integrated on-board communication device for rail transit according to this utility model;
[0022] Figure 2 This is a front view of the integrated vehicle-mounted communication device for rail transit according to this utility model;
[0023] The numbers in the diagram are as follows: 101, power supply unit; 102, service interface unit; 103, radio frequency unit; 104, radio frequency antenna; 105, operation terminal. Detailed Implementation
[0024] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.
[0025] Example 1
[0026] A converged onboard communication device for rail transit, based on 4G or 5G broadband public networks, provides secure professional communication over the public network and can also support self-built private networks to carry critical communication services, providing rail transit train drivers with converged audio and video command and dispatch communication. Adopting the 3GPP key communication standard MCx, it is fully compatible with mainstream 4G / 5G technologies and can be used as an application layer on 4G / 5G networks.
[0027] The device of this utility model is as follows Figure 1 As shown, the device mainly consists of a power supply unit 101, a service interface unit 102, a radio frequency unit 103, a radio frequency antenna 104, and an operation terminal 105.
[0028] The power supply unit 101 can convert the DC 110V or 24V provided by the rail transit vehicle into the DC 13.8V locomotive operating voltage used by each unit, and power the service interface unit, radio frequency unit and operation terminal and other units.
[0029] Service interface unit 102 provides various network bearer service interfaces for vehicle use. It uses an embedded ARM microcontroller and an embedded Linux operating system. The controller integrates Ethernet ports, serial ports, and analog audio interfaces for connection with other professional devices on the vehicle. The software running in service interface unit 102 controls the network control access process of radio frequency unit 103.
[0030] The radio frequency (RF) unit 103 is used for data conversion between wired and wireless networks, enabling real-time data transmission. The RF unit 103 can choose narrowband trunking (TETRA), DMR, or broadband communication (LTE-M), public 4G / 5G, or next-generation wireless communication networks carrying trunking communication. It transmits data over public networks through secure encrypted channels using tunneling technologies such as VPN, APN, and VPDN, as well as encryption and authentication methods. The RF unit can also choose to use independently constructed or public network sliced dedicated wireless broadband networks to provide end-to-end virtual private network (VPN) services, ensuring service reliability.
[0031] The radio frequency unit 103 uses a 5G internet module with a Mini PCIe standard interface to realize data conversion between broadband wired networks and wireless networks, enabling real-time data transmission. The radio frequency unit defaults to using a public 5G mobile communication network and connects to the trunking core network via encrypted APN tunneling technology for encrypted authentication, ensuring reliable transmission of trunking service data.
[0032] The radio frequency antenna 104 is a 5G band Massive MIMO antenna, which is generally installed in two locations: the roof and the floor of the vehicle. Through the POI combiner platform, it provides antenna access functionality for multiple devices on the vehicle.
[0033] The operating terminal 105 runs scheduling communication software based on MCx services to implement cluster scheduling communication functions. For example... Figure 2 As shown, this is a large-screen touchscreen operating terminal device running Android or HarmonyOS, providing a handset for making calls. The operating terminal serves as the human-machine interface between the driver and the converged vehicle communication device, supporting both touch and button operation methods, and offering high usability.
[0034] This utility model device supports the converged communication between TETRA and the next-generation 5G PTT, which can well meet the smooth transition from TETRA narrowband trunking to 5G broadband trunking. During the transformation and implementation process, it will not affect the daily operation of rail transit, nor change the dispatching and operation communication mode. After the transformation is completed, it can protect the existing asset investment and continue to use the 5G PTT broadband trunking dispatching function.
[0035] The 5G PTT converged communication device in this solution can provide audio and video converged command and dispatch communication for critical communication users on the move. It is based on 4G or 5G broadband public network and provides secure professional communication on the public network, reducing the investment cost of existing basic network construction.
[0036] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.
Claims
1. A converged on-board communication device for rail transit, characterized in that, The integrated vehicle communication device includes: The power supply unit (101) is used to convert the DC power supplied by the rail transit vehicle into the locomotive operating voltage and is electrically connected to each unit. The service interface unit (102) is equipped with a variety of network bearer service interfaces; The radio frequency unit (103) is a public network access module, equipped with a radio frequency antenna (104) and signal-connected to the service interface unit (102); The operating terminal (105) is a communication terminal that supports the 3GPP communication standard MCx and is signal-connected to the service interface unit (102).
2. The integrated on-board communication device for rail transit according to claim 1, characterized in that, The power supply unit (101) includes a DC / DC converter that converts DC 110V to DC 13.8V.
3. The integrated on-board communication device for rail transit according to claim 1, characterized in that, The power supply unit (101) includes a DC / DC converter that converts 24V DC to 13.8V DC.
4. A fusion on-board communication device for rail transit according to claim 1, characterized in that, The service interface unit (102) includes an embedded ARM microcontroller.
5. A fusion on-board communication device for rail transit according to claim 4, characterized in that, The service interface unit (102) is equipped with an Ethernet port, a serial port and an analog audio interface.
6. A fusion on-board communication device for rail transit according to claim 1, characterized in that, The radio frequency unit (103) is a 5G Internet access module with a Mini PCIe standard interface.
7. A fusion on-board communication device for rail transit according to claim 6, characterized in that, The radio frequency antenna (104) is a 5G band Massive MIMO antenna.
8. A fusion on-board communication device for rail transit according to claim 7, characterized in that, The radio frequency antenna (104) is installed on the roof and under the train and is connected to the radio frequency unit (103) through the POI combiner platform.
9. A fusion on-board communication device for rail transit according to claim 1, characterized in that, The operating terminal (105) is a large-size touch screen operating terminal device.
10. A fusion on-board communication device for rail transit according to claim 9, characterized in that, The operating terminal (105) is equipped with a handset for making calls.