GSM-R network coverage remote processing equipment

Abstract

The utility model relates to the technical field of train wireless communication, in particular to GSM-R network coverage remote processing equipment, which comprises a base station, a radio frequency switch controller, a remote network management control system and a far-end machine, the far-end machine is electrically connected with a bridge and a power divider b, the radio frequency switch controller and a COM end are electrically connected with a combiner, and the combiner is electrically connected with a power divider b. The combiner is electrically connected with the base station, the NO end of the radio frequency switch controller is electrically connected with the bridge, the radio frequency switch controller can be connected with an existing system in an optimal scheme on the premise of not sacrificing the functions and performance of the existing system, the coverage switching of the base station and the digital optical fiber repeater is completed in a manual or automatic mode, and the coverage switching efficiency is greatly improved. According to the method, the network coverage about 1km near the station is preferentially ensured, the traffic safety is ensured, when the network coverage fails, the network coverage can be ensured to be recovered to be normal within the shortest time (completion within 1s), and the normal coverage of the network is not influenced when professionals go to the scene for processing.

Description

Technical Field

[0001] The utility model relates to the technical field of train wireless communication, specifically a remote processing device for GSM-R network coverage. Background Technique

[0002] The network coverage of the GSM-R system is generally covered by base stations or repeaters. When using digital fiber optic repeaters for network coverage, due to the existence of multipath interference, the base station and the repeater cannot cover simultaneously. The base station only serves as a signal source for the repeater. Physically, the base station is not directly connected to the antenna feeder system for network coverage.

[0003] In the prior art, the equipment failure rate of the repeater is higher than that of the base station. When the repeater fails, the network coverage is affected and cannot automatically switch to the base station for coverage, which is bound to affect the "one station with two half intervals", especially the network coverage within the station and within 1 km before and after the station (approach warning transmission area). The maintenance of the repeater is relatively complex, and it is impossible to quickly restore the network coverage within 1 km before and after the station within the station through maintenance, which is likely to affect the safety of train operation. Content of the Utility Model

[0004] The purpose of the utility model is to provide a remote processing device for GSM-R network coverage to solve the problems raised in the above background technique.

[0005] The purpose of the utility model can be realized by the following technical solutions:

[0006] The remote processing device for GSM-R network coverage includes a base station, a radio frequency switch controller, a remote network management control system, and a remote unit. An electric bridge and a power divider b are electrically connected to the remote unit. The radio frequency switch controller and the COM terminal are electrically connected to a combiner. The combiner is electrically connected to the base station. The NO terminal of the radio frequency switch controller is electrically connected to the electric bridge. The NC terminal of the radio frequency control switch controller is electrically connected to a power divider a.

[0007] The remote network management control system includes a CSM-R suction cup antenna. The CSM-R suction cup antenna is electrically connected to the radio frequency switch controller. The CSM-R suction cup antenna is used to achieve the network coverage of the base station, and the radio frequency switch controller is used to control the CSM-R suction cup antenna.

[0008] Preferably, the remote processing device for GSM-R network coverage further includes a receiving chassis and a proximal unit. The receiving chassis is electrically connected to the proximal unit, and the power divider a is electrically connected to the receiving chassis.

[0009] Preferably, the proximal unit is connected to the remote unit through an optical fiber.

[0010] Preferably, the GSM-R network coverage remote processing device further includes an antenna, and both the bridge and the power divider b are electrically connected to the antenna, and the antenna is used to achieve the network coverage of the digital fiber optic repeater.

[0011] Preferably, the remote network management control system further includes a network management controller and a gateway PC human-machine interface, and the network management controller is electrically connected to the gateway PC human-machine interface.

[0012] Preferably, the network management controller includes a microcontroller, a CSM-R data module, and an Ethernet module. Both the CSM-R data module and the Ethernet module are electrically connected to the microcontroller. The CSM-R data module is electrically connected to a CSM-R suction cup antenna, and the network management controller is used to obtain the parameters of the radio frequency switch controller in the computer room and the station.

[0013] Advantages of the present invention:

[0014] The radio frequency switch controller of the present invention can connect to the existing system with the optimal solution without sacrificing the functions and performance of the existing system, and provides a manual or automatic method to complete the switching of the coverage of the base station and the digital fiber optic repeater. It preferentially ensures the network coverage within about 1 km on both sides near the station to ensure the safety of train operation. When there is a network coverage failure, the network coverage can be restored to normal within the fastest time (completed within 1 s). During the process of professionals going to the site for processing, the normal network coverage is not affected. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings;

[0016] Figure 1 is a schematic structural diagram of the GSM-R network coverage remote processing device proposed by the present invention;

[0017] Figure 2 is a schematic structural diagram of the remote network management control system in the present invention;

[0018] Figure 3 is a schematic structural diagram of the network management controller in the present invention;

[0019] Figure 4 is a schematic structural diagram of the GSM-R network coverage remote processing device in the prior art. Detailed Embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0021] The GSM-R network coverage remote processing device includes a base station, a radio frequency switch controller, a remote network management control system, and a remote unit. An electric bridge and a power divider b are electrically connected to the remote unit. The radio frequency switch controller and the COM terminal are electrically connected to a combiner, the combiner is electrically connected to the base station, the NO terminal of the radio frequency switch controller is electrically connected to the electric bridge, and the NC terminal of the radio frequency control switch controller is electrically connected to a power divider a.

[0022] The remote network management control system includes a CSM-R suction cup antenna. The CSM-R suction cup antenna is electrically connected to the radio frequency switch controller. The CSM-R suction cup antenna is used to achieve the network coverage of the base station, and the radio frequency switch controller is used to control the CSM-R suction cup antenna.

[0023] The radio frequency switch controller is installed in the station computer room and mainly completes the connection of the signals of the base station or the repeater (including the receiving and inserting box, the proximal unit, the remote unit, and the optical fiber) to the antenna or the CSM-R suction cup antenna. The main functions are as follows:

[0024] 1) Report the operation and working status of the device through the GSM-R network;

[0025] 2) Connect the base station, the repeater, and the antenna feeder system through a single-pole double-throw radio frequency switch;

[0026] 3) Manually switch the radio frequency switch;

[0027] 4) Automatically switch the radio frequency switch according to the output power of the remote unit;

[0028] 5) Automatically switch the radio frequency switch according to the instructions of the network management controller;

[0029] 6) Through the FE interface, it can be connected to the transmission network to communicate with the network management controller, or the device can be debugged through the FE interface.

[0030] The GSM-R network coverage remote processing device uses a standard 1U chassis and an aluminum shell, and the power consumption ≤ 10W. The descriptions of other interfaces and functions on it are as follows:

[0031] 1) 48V power input: Adopt a fence-type wiring terminal, which can be accessed through an M6 round terminal, and tighten the screws;

[0032] 2) SIM Card Holder: Standard SIM card holder, the GSM-R data module is inserted into the network card;

[0033] 3) Indicator Lights: 4 indicator lights, namely PWR (power status, green), RUN (device heartbeat light, green), BTS (indicating covered by BTS, switch connects COM and NO, red), RU (indicating covered by the remote unit of the repeater, switch connects COM and NC, green);

[0034] 4) Toggle Switch: It can be in three states: forced BTS mode, forced remote unit mode, automatic mode; In the automatic mode, the system automatically judges the operating state for control. In the forced BTS mode, the electronic switch is connected to COM and NO, and is covered by BTS. In the forced RU mode, the electronic switch is connected to COM and NC, and is covered by the remote unit. In the forced mode, the automatic mode does not work;

[0035] 5) RJ45 Interface: Provides a FE interface, can be connected to the transmission network, and can receive device operating status information at the network management controller end;

[0036] 6) 3 female N-type connectors of the controller: The COM port is connected to the base station, the NO port is connected to the antenna feeder, and the NC port is connected to the remote unit of the repeater;

[0037] 7) GSM-R Antenna Interface: Female SMA connector, can be connected to a rod antenna or a suction cup antenna. To prevent multipath interference, the antenna interface of the GSM-R data module does not receive signals through the antenna, but uses the signal coupled to the NO port internally. In this way, whether it is covered by the base station or the repeater, no multipath interference will be generated, and the GSM-R data module can receive signals normally regardless of the coverage method;

[0038] 8) Power Monitoring Port of the Remote Unit: Female N-type connector. After the signal is coupled through a 40dB coupler from the RF1 output port of the remote unit, the signal attenuates to about 0dBm (including cable damage). This signal can output a weak voltage signal through the power monitoring module, and the single-chip microcomputer detects the voltage value and converts it into a power value, thereby judging the output power of the remote unit of the repeater at this moment, which is used as a judgment condition for the system;

[0039] 9) RS232 Serial Port: Used for device debugging of the upper computer;

[0040] 10) TF Card: Used to store logs.

[0041] The GSM-R network coverage remote processing device further includes a receiving chassis and a proximal unit. The receiving chassis and the proximal unit are electrically connected, and the power splitter a and the receiving chassis are electrically connected.

[0042] The proximal unit is connected to the remote unit through an optical fiber.

[0043] The GSM-R network coverage remote processing device further includes an antenna, and both the bridge and the power divider b are electrically connected to the antenna, and the antenna is used to achieve the network coverage of the digital fiber optic repeater.

[0044] The remote network management control system further includes a network management controller and a gateway PC human-machine interface, and the network management controller and the gateway PC human-machine interface are electrically connected.

[0045] The network management controller includes a microcontroller, a CSM-R data module and an Ethernet module. Both the CSM-R data module and the Ethernet module are electrically connected to the microcontroller. The CSM-R data module is electrically connected to a CSM-R suction cup antenna, and the network management controller is used to obtain the parameters of the radio frequency switch controller in the machine room of the station.

[0046] Such as Figure 1 , the model of the microcontroller is STM32F407, where the radio frequency switch controller is installed in the machine room of the station, and the remote network management control system is installed in the network management center;

[0047] The remote network control system mainly includes a network management controller and a PC WEB human-machine interface, and also includes a TF card, an FE interface and a USB interface. The main functions are as follows:

[0048] 1) Monitor and control the working status of the radio frequency switch controller through the GSM-R network;

[0049] 2) Monitor the network heartbeat through the GSM-R data module;

[0050] 3) Connect to the transmission network through the FE interface and communicate with the radio frequency switch controller;

[0051] 4) Provide a WEB human-computer interaction interface through the USB interface or the FE interface.

[0052] 5) Store logs through the TF card.

[0053] The parameters of the network management controller include:

[0054] 1) Network information that can be obtained, such as the heartbeat information, cell information, field strength information, etc. of the GSM-R data module;

[0055] 2) Information such as the operating status, software version, IP address, etc. of the device itself;

[0056] 3) According to the status of the radio frequency switch controller, light up the corresponding 2 LEDs: covered by BTS, covered by RU;

[0057] 4) Radio frequency switch controller parameters (obtained through the FE transmission network or the GSM-R wireless network):

[0058] Such as Figure 3, the network management controller obtains the parameters of the radio frequency switch controller in the computer room station, including:

[0059] 1) Network information that can be obtained, such as heartbeat information, cell information, and field strength information of the GSM-R data module;

[0060] 2) Information such as the operating status, software version, and IP address of the device itself;

[0061] 3) Three states of the display toggle switch: automatic mode, BTS coverage, and RU mode, and the mode information is provided by the hardware;

[0062] 4) Display the working status of the current radio frequency electronic switch: BTS coverage, RU coverage;

[0063] 5) The power magnitude of the coupled signal of the remote unit;

[0064] 6) According to the GSM-R network heartbeat information, remotely control the radio frequency switch to switch, and the time for judging the heartbeat loss of connection needs to be settable;

[0065] 7) According to the power magnitude of the coupled signal of the remote unit, remotely control the radio frequency switch to switch, and the threshold for judging the power needs to be settable;

[0066] 8) All parameters must have log records, and the logs can be downloaded to the local through the web interface

[0067] The working principle of the GSM-R network coverage remote processing device provided by the present utility model is as follows:

[0068] Such as Figure 4 , in the prior art, the existing solution consists of a base station, a digital fiber optic repeater system (including a housing chassis, a proximal unit, a remote unit, and an optical fiber), an antenna, a power divider, and a coaxial cable. The base station only serves as a signal source for the repeater. For the downlink, the transmit power of the base station is generally 43 dBm (20 W), the housing chassis attenuates the signal by 50 dB, and the gain of the repeater system is 50 dB. Therefore, the power output after passing through the repeater is still 43 dBm. Similarly, for the uplink, the gain of the repeater is 50 dB, and the housing chassis attenuates by 50 dB. Therefore, the uplink signal received by the base station remains unchanged.

[0069] In the prior art, for the internal board configuration of some remote units in the line, the digital board or the central control board (central control processing board) inside the remote unit does not achieve board-level redundant configuration. After a failure, it cannot automatically switch to standby and resume normal working status. Moreover, the internal technology of the remote unit RU in the remote unit is quite different from that of the base station BTS, and the mean time between failures (MTBF) is much lower than that of the base station BTS, and it is relatively poor in terms of service life and failure rate;

[0070] When a digital board of a remote unit in a digital fiber optic repeater system fails, the replacement of the digital board also needs to be carried out at the fault site. After using a dedicated data cable to connect to a laptop (PC) to configure parameters such as the device ID offline, it can be used. The replacement of main components such as the digital board requires professional skills and a long time. It is difficult for on-site maintenance personnel to master the corresponding skills proficiently, and the MTTR (Mean Time To Repair) fault recovery time is difficult to control, and the fault cannot be processed in time, affecting train operation safety.

[0071] Such as Figure 1 and Figure 2 In the present utility model, when the digital fiber optic repeater system (including a receiving chassis, a proximal unit, a remote unit, an optical fiber, etc.) is working properly, the RF switch controller connects the base station signal to the proximal unit in the digital fiber optic repeater system, and disconnects the RF channel between the base station and the CSM-R suction cup antenna, ensuring that there is no multipath interference caused by the simultaneous coverage of the base station and the repeater.

[0072] When a fault of the digital fiber optic repeater system is detected, the RF switch controller connects the RF channel between the base station signal and the CSM-R suction cup antenna, and at the same time disconnects the RF channel between the digital fiber optic repeater system and the base station. At this time, the base station is used for network coverage.

[0073] Compared with the related technologies, the GSM-R network coverage remote processing device provided by the present utility model has the following beneficial effects:

[0074] The RF switch controller of the present utility model can connect to the existing system with the optimal solution without sacrificing the functions and performance of the existing system, and provide a manual or automatic method to complete the switching between the base station and the digital fiber optic repeater coverage. It preferentially ensures the network coverage within about 1 km on both sides near the station, ensuring train operation safety. When there is a network coverage fault, it can ensure that the network coverage returns to normal within the fastest time (completed within 1 s). During the process of professional personnel going to the site for processing, it does not affect the normal network coverage.

[0075] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. GSM-R network coverage remote processing equipment, including base station, radio frequency switch controller, remote network management control system and remote machine, characterized in that: The remote device is electrically connected to a bridge and a power divider b, the RF switch controller and the COM terminal are electrically connected to a combiner, the combiner is electrically connected to the base station, the NO terminal of the RF switch controller is electrically connected to the bridge, and the NC terminal of the RF control switch controller is electrically connected to the power divider a; The remote network management control system includes a CSM-R suction cup antenna, which is electrically connected to a radio frequency switch controller. The CSM-R suction cup antenna is used to achieve network coverage of the base station, and the radio frequency switch controller is used to control the CSM-R suction cup antenna.

2. The GSM-R network coverage remote processing device according to claim 1, characterized in that: The GSM-R network coverage remote processing device also includes a receiving plug-in box and a near-end machine, the receiving plug-in box and the near-end machine are electrically connected, and the power divider a is electrically connected to the receiving plug-in box.

3. The GSM-R network coverage remote processing device according to claim 2, characterized in that: The near-end machine is connected to the far-end machine via an optical fiber.

4. The GSM-R network coverage remote processing device according to claim 1, characterized in that: The GSM-R network coverage remote processing device also includes an antenna, and the bridge and the power divider b are electrically connected to the antenna. The antenna is used to achieve network coverage of the digital optical fiber repeater station.

5. The GSM-R network coverage remote processing device according to claim 1, characterized in that: The remote network management control system also includes a network management controller and a gateway PC human-machine interface, and the network management controller and the gateway PC human-machine interface are electrically connected.

6. The GSM-R network coverage remote processing device according to claim 5, characterized in that: The network management controller includes a microcontroller, a CSM-R data module and an Ethernet module. The CSM-R data module and the Ethernet module are electrically connected to the microcontroller. The CSM-R data module is electrically connected to the CSM-R suction cup antenna. The network management controller is used to obtain the parameters of the machine room station radio frequency switch controller.

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