CN112235879A - Railway train control dual-mode wireless terminal and implementation method - Google Patents
Railway train control dual-mode wireless terminal and implementation method Download PDFInfo
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
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Abstract
The embodiment of the invention provides a railway train control dual-mode wireless terminal, which comprises: the device comprises a control module, a power supply module, a GSM-R communication processing module, a 5G-R communication processing module and an interface unit; the interface unit includes: the system comprises an Igsm-R interface module, a GSM-R radio frequency interface module and a 5G-R radio frequency interface module; the control module receives an AT command sent by the RTU through the Igsm-r interface module, and selects a communication system to perform data interaction with the ground equipment through the AT command; the power supply module is respectively connected with the control module, the GSM-R communication processing module and the 5G-R communication processing module and used for supplying power to the control module, the GSM-R communication processing module and the 5G-R communication processing module. The invention also provides a railway train control dual-mode wireless terminal implementation method, wherein the railway train control dual-mode communication terminal is connected with the wireless transmission unit through the Igsm-r interface module, and the wireless transmission unit is connected with the ATP main control unit. The invention simultaneously supports the GSM-R network and the 5G-R network and can switch between the networks.
Description
Technical Field
The invention relates to the technical field of train control vehicle-mounted terminal communication, in particular to a railway train control dual-mode wireless terminal and an implementation method thereof.
Background
At present, a railway CTCS-3 level train control system is based on a GSM-R communication system, train control vehicle-mounted equipment is accessed to a GSM-R network in a circuit switching mode, and the mode has low transmission rate and low spectrum utilization rate.
With the development of high-speed railways and the introduction of new infrastructure policies, next-generation mobile communication systems of railways, i.e., 5G-R networks, are currently being developed. The train control system is used as the most key service of a railway special wireless network, and the development of adaptability research is urgently needed.
The railway communication development is a gradual change process, and a GSM-R communication system and a 5G-R communication system coexist for a long time, so in order to effectively solve the problem of smooth transition of railway communication from GSM-R to 5G-R, the invention provides a GSM-R and 5G-R based dual-mode wireless terminal and an implementation method thereof.
Disclosure of Invention
The embodiment of the invention provides a railway train control dual-mode wireless terminal and an implementation method thereof, which are used for overcoming the defects of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme.
A railway train control dual-mode wireless terminal comprises: the device comprises a control module, a power supply module, a GSM-R communication processing module, a 5G-R communication processing module and an interface unit;
the interface unit includes: the system comprises an Igsm-R interface module, a GSM-R radio frequency interface module and a 5G-R radio frequency interface module;
the GSM-R communication processing module is used for processing the sent and received circuit domain wireless signals;
the GSM-R radio frequency interface module is an antenna for receiving and transmitting GSM-R wireless communication signals and is connected with the GSM-R communication processing module;
the 5G-R communication processing module is used for processing the sent and received packet domain wireless signals;
the 5G-R radio frequency interface module is an antenna for receiving and transmitting 5G-R wireless communication signals and is connected with the 5G-R communication processing module;
the control module receives an AT command sent by a wireless transmission unit RTU through an Igsm-r interface module, and selects a communication system to perform data interaction with ground equipment through the AT command;
the power supply module is respectively connected with the control module, the GSM-R communication processing module and the 5G-R communication processing module and used for supplying power to the control module, the GSM-R communication processing module and the 5G-R communication processing module.
Preferably, the working frequency of the GSM-R radio frequency interface module is 885 MHz-889 MHz in uplink and 930 MHz-935 MHz in downlink;
preferably, the working frequency of the 5G-R radio frequency interface module is 1920 MHz-1980 MHz in the uplink and 2110 MHz-2170 MHz in the downlink.
A railway train control dual-mode wireless terminal implementation method is applied, the railway train control dual-mode wireless terminal is connected with a wireless transmission unit through an Igsm-r interface module, the wireless transmission unit is connected with an ATP (automatic train protection) main control unit, the wireless transmission unit is used for transmitting train control information in a two-way mode, and the ATP main control unit is an ATP (automatic train protection) core control module and is used for receiving and processing train safe operation information;
the railway train control dual-mode communication terminal selects whether the data transmission of the train control service is carried by a GSM-R system or a 5G-R system by receiving the command of the Igsm-R interface module, and the specific selection method comprises the following steps:
the method comprises the steps that an ATP main control unit processes wireless communication network information sent by a ground responder, if the ATP main control unit receives a CTCS-131 information packet, the coverage network of a region where the front part is located is a 5G-R communication network, a wireless transmission unit generates a corresponding control command and sends the control command to a control module of the railway train control dual-mode wireless terminal, and after the control module processes the information, a 5G-R packet domain mode is selected for information interaction, namely, the information is sent and received through a 5G-R communication processing module and a 5G-R radio frequency interface module; if the ATP main control unit receives the ETCS-42 information packet, the coverage network of the area where the front part is located is indicated to be a GSM-R communication network, the wireless transmission unit generates a corresponding control command and sends the control command to a control module of the railway train control dual-mode wireless terminal, and after the control module processes information, a GSM-R circuit domain mode is selected for information interaction, namely, the information is sent and received through a GSM-R communication processing module and a GSM-R radio frequency interface module;
the CTCS-131 information packet is a 5G-R train-ground communication management information packet and is used for identifying a 5G-R network, and the ETCS-42 information packet is a GSM-R train-ground communication management information packet and is used for identifying a GSM-R network.
It can be seen from the technical solutions provided by the embodiments of the present invention that the embodiments of the present invention provide a railway train control dual-mode wireless terminal, which simultaneously supports GSM-R and 5G-R communication systems without changing the external dimensions and performance of the existing devices, retains the GSM-R hardware communication interface and the software protocol, and adds the 5G-R hardware communication interface and the software protocol. The embodiment of the invention provides a railway train control dual-mode wireless terminal implementation method, which judges the network type of a front coverage area through a switching forecast sent by a ground responder in a network overlapping area, thereby controlling the selection of a data channel of a dual-mode communication terminal and ensuring the continuity of services.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic diagram of a railway train control dual-mode wireless terminal according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a railway train control dual-mode wireless terminal and an ATP in-vehicle device according to an embodiment of the present invention;
fig. 3 is a schematic diagram of implementing connection of a railway train control dual-mode wireless terminal according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or coupled. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
For the convenience of understanding the embodiments of the present invention, the following description will be further explained by taking several specific embodiments as examples in conjunction with the drawings, and the embodiments are not to be construed as limiting the embodiments of the present invention.
An embodiment of the present invention provides a railway train control dual-mode wireless terminal, as shown in fig. 1, including: the device comprises a control module, a power supply module, a GSM-R communication processing module, a 5G-R communication processing module and an interface unit. Wherein, the interface unit includes: the system comprises an Igsm-R interface module, a GSM-R radio frequency interface module and a 5G-R radio frequency interface module. The dual-mode terminal adopts a 'dual-card dual-standby' mode inside, has a CSD and PSD data transmission channel which work independently, simultaneously supports a GSM-R network and a 5G-R network, and can be switched between the networks.
And the GSM-R communication processing module is used for processing the sent and received circuit domain wireless signals.
The GSM-R radio frequency interface module is an antenna for receiving and transmitting GSM-R wireless communication signals, is connected with the GSM-R communication processing module, and has working frequencies of uplink 885 MHz-889 MHz and downlink 930 MHz-935 MHz.
The 5G-R communication processing module is used for processing the sent and received packet domain wireless signals.
The 5G-R radio frequency interface module is an antenna for receiving and transmitting 5G-R wireless communication signals, is connected with the 5G-R communication processing module, and has working frequencies of 1920 MHz-1980 MHz for uplink and 2110 MHz-2170 MHz for downlink.
The control module receives an AT command sent by the RTU through the Igsm-r interface module, and selects a communication system to perform data interaction with the ground equipment through the AT command.
The power supply module is respectively connected with the control module, the GSM-R communication processing module and the 5G-R communication processing module and used for supplying power to the control module, the GSM-R communication processing module and the 5G-R communication processing module.
The embodiment of the invention also provides a railway train control dual-mode wireless terminal implementation method, as shown in 2-3, the railway train control dual-mode communication terminal is connected with a wireless transmission unit through an Igsm-r interface module, the wireless transmission unit is connected with an ATP (automatic train protection) main control unit, the wireless transmission unit is used for transmitting train control information in a two-way mode, and the ATP main control unit is an ATP (automatic train protection) core control module and is used for receiving and processing train safety operation information.
Under the GSM-R network, data are sent and received through the control module, the GSM-R communication processing module and the GSM-R radio frequency interface. Under the 5G-R network, data are transmitted and received through the control module, the 5G-R communication processing module and the 5G-R radio frequency interface.
The railway train control dual-mode communication terminal selects whether the data transmission of the train control service is carried by a GSM-R system or a 5G-R system by receiving a command of an Igsm-R interface module, and the specific selection method comprises the following steps:
the ATP main control unit processes wireless communication network information sent by the ground responder, in order to identify a 5G-R network, the ground responder generates a 5G-R train-ground communication management information packet, namely a CTCS-131 information packet, when the ATP main control unit receives the CTCS-131 information packet, the ATP main control unit indicates that a coverage network of an area where the front part is located is the 5G-R communication network, the wireless transmission unit generates a corresponding control command and sends the control command to a control module of the railway train control dual-mode wireless terminal, and after the control module processes the information, the 5G-R packet domain mode is selected for information interaction, namely, the information is sent and received through the 5G-R communication processing module and the 5G-R radio frequency interface module; if the ATP main control unit receives an ETCS-42 information packet (the ETCS-42 information packet is a GSM-R train-ground communication management information packet used for identifying a GSM-R network), the coverage network of the area where the front is located is indicated to be the GSM-R communication network, the wireless transmission unit generates a corresponding control command and sends the control command to the control module of the railway train control dual-mode wireless terminal, and after the control module processes information, the GSM-R circuit domain mode is selected for information interaction, namely, the information is sent and received through the GSM-R communication processing module and the GSM-R radio frequency interface module.
Wherein the CTCS-131 packet is defined as follows:
TABLE 1 CTCS-131 packet definitions
In summary, the embodiment of the present invention provides a railway train control dual-mode wireless terminal, which can support both a GSM-R circuit domain communication system and a 5G-R packet domain communication system, and also provides a switching method, so that the dual-mode communication terminal can switch between a GSM-R network and a 5G-R network.
Those of ordinary skill in the art will understand that: the figures are merely schematic representations of one embodiment, and the blocks or flow diagrams in the figures are not necessarily required to practice the present invention.
From the above description of the embodiments, it is clear to those skilled in the art that the present invention can be implemented by software plus necessary general hardware platform. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which may be stored in a storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the embodiments or some parts of the embodiments.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for apparatus or system embodiments, since they are substantially similar to method embodiments, they are described in relative terms, as long as they are described in partial descriptions of method embodiments. The above-described embodiments of the apparatus and system are merely illustrative, and the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (4)
1. A railway train control dual-mode wireless terminal is characterized by comprising: the device comprises a control module, a power supply module, a GSM-R communication processing module, a 5G-R communication processing module and an interface unit;
the interface unit includes: the system comprises an Igsm-R interface module, a GSM-R radio frequency interface module and a 5G-R radio frequency interface module;
the GSM-R communication processing module is used for processing the sent and received circuit domain wireless signals;
the GSM-R radio frequency interface module is an antenna for receiving and transmitting GSM-R wireless communication signals and is connected with the GSM-R communication processing module;
the 5G-R communication processing module is used for processing the sent and received packet domain wireless signals;
the 5G-R radio frequency interface module is an antenna for receiving and transmitting 5G-R wireless communication signals and is connected with the 5G-R communication processing module;
the control module receives an AT command sent by a wireless transmission unit RTU through an Igsm-r interface module, and selects a communication system to perform data interaction with ground equipment through the AT command;
the power supply module is respectively connected with the control module, the GSM-R communication processing module and the 5G-R communication processing module and used for supplying power to the control module, the GSM-R communication processing module and the 5G-R communication processing module.
2. The terminal of claim 1, wherein the operating frequency of the GSM-R radio frequency interface module is 885MHz to 889MHz in uplink, and 930MHz to 935MHz in downlink.
3. The terminal of claim 1, wherein the operating frequency of the 5G-R radio frequency interface module is 1920 MHz-1980 MHz in uplink and 2110 MHz-2170 MHz in downlink.
4. A railway train control dual-mode wireless terminal realization method is characterized in that the railway train control dual-mode wireless terminal of any one of claims 1 to 3 is applied, the railway train control dual-mode communication terminal is connected with a wireless transmission unit through an Igsm-r interface module, the wireless transmission unit is connected with an ATP (automatic train protection) main control unit, the wireless transmission unit is used for transmitting train control information in two directions, and the ATP main control unit is a core control module of ATP and is used for receiving and processing train safe operation information;
the railway train control dual-mode communication terminal selects whether the data transmission of the train control service is carried by a GSM-R system or a 5G-R system by receiving the command of the Igsm-R interface module, and the specific selection method comprises the following steps:
the method comprises the steps that an ATP main control unit processes wireless communication network information sent by a ground responder, if the ATP main control unit receives a CTCS-131 information packet, the coverage network of a region where the front part is located is a 5G-R communication network, a wireless transmission unit generates a corresponding control command and sends the control command to a control module of the railway train control dual-mode wireless terminal, and after the control module processes the information, a 5G-R packet domain mode is selected for information interaction, namely, the information is sent and received through a 5G-R communication processing module and a 5G-R radio frequency interface module; if the ATP main control unit receives the ETCS-42 information packet, the coverage network of the area where the front part is located is indicated to be a GSM-R communication network, the wireless transmission unit generates a corresponding control command and sends the control command to a control module of the railway train control dual-mode wireless terminal, and after the control module processes information, a GSM-R circuit domain mode is selected for information interaction, namely, the information is sent and received through a GSM-R communication processing module and a GSM-R radio frequency interface module;
the CTCS-131 information packet is a 5G-R train-ground communication management information packet and is used for identifying a 5G-R network, and the ETCS-42 information packet is a GSM-R train-ground communication management information packet and is used for identifying a GSM-R network.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112929824A (en) * | 2021-03-09 | 2021-06-08 | 北京六捷科技有限公司 | Method and system for acquiring network communication quality |
| CN113212496A (en) * | 2021-03-17 | 2021-08-06 | 卡斯柯信号有限公司 | Vehicle-mounted communication device and method for rail transit multimode fusion |
| CN113784409A (en) * | 2021-09-13 | 2021-12-10 | 中国国家铁路集团有限公司 | High-speed railway ATO system dual-mode vehicle-mounted wireless communication unit and control method |
| CN114205327A (en) * | 2021-12-28 | 2022-03-18 | 卡斯柯信号有限公司 | Dynamic IP communication method and system for trackside security platform |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105206026A (en) * | 2015-10-16 | 2015-12-30 | 河南蓝信科技股份有限公司 | Train-ground transmission platform for motor train unit |
| CN108156634A (en) * | 2016-12-02 | 2018-06-12 | 中兴通讯股份有限公司 | Method for processing business, apparatus and system |
| CN110677835A (en) * | 2019-08-29 | 2020-01-10 | 北京全路通信信号研究设计院集团有限公司 | Dual-network converged train control wireless communication system and method |
| CN111163441A (en) * | 2020-04-03 | 2020-05-15 | 北京全路通信信号研究设计院集团有限公司 | Dual-mode vehicle-mounted radio station system |
| CN111741486A (en) * | 2020-08-27 | 2020-10-02 | 北京全路通信信号研究设计院集团有限公司 | Test method and system for dual-mode vehicle-mounted radio station |
-
2020
- 2020-11-16 CN CN202011281523.XA patent/CN112235879A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105206026A (en) * | 2015-10-16 | 2015-12-30 | 河南蓝信科技股份有限公司 | Train-ground transmission platform for motor train unit |
| CN108156634A (en) * | 2016-12-02 | 2018-06-12 | 中兴通讯股份有限公司 | Method for processing business, apparatus and system |
| CN110677835A (en) * | 2019-08-29 | 2020-01-10 | 北京全路通信信号研究设计院集团有限公司 | Dual-network converged train control wireless communication system and method |
| CN111163441A (en) * | 2020-04-03 | 2020-05-15 | 北京全路通信信号研究设计院集团有限公司 | Dual-mode vehicle-mounted radio station system |
| CN111741486A (en) * | 2020-08-27 | 2020-10-02 | 北京全路通信信号研究设计院集团有限公司 | Test method and system for dual-mode vehicle-mounted radio station |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112929824A (en) * | 2021-03-09 | 2021-06-08 | 北京六捷科技有限公司 | Method and system for acquiring network communication quality |
| CN112929824B (en) * | 2021-03-09 | 2023-04-07 | 北京六捷科技有限公司 | Method and system for acquiring network communication quality |
| CN113212496A (en) * | 2021-03-17 | 2021-08-06 | 卡斯柯信号有限公司 | Vehicle-mounted communication device and method for rail transit multimode fusion |
| CN113784409A (en) * | 2021-09-13 | 2021-12-10 | 中国国家铁路集团有限公司 | High-speed railway ATO system dual-mode vehicle-mounted wireless communication unit and control method |
| CN113784409B (en) * | 2021-09-13 | 2024-02-09 | 中国国家铁路集团有限公司 | Dual-mode vehicle-mounted wireless communication unit of ATO system of high-speed railway and control method |
| CN114205327A (en) * | 2021-12-28 | 2022-03-18 | 卡斯柯信号有限公司 | Dynamic IP communication method and system for trackside security platform |
| CN114205327B (en) * | 2021-12-28 | 2024-02-06 | 卡斯柯信号有限公司 | Dynamic IP communication method and system for trackside safety platform |
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