CN113473412A - Method for reliable and safe communication of data in railway motor car application station - Google Patents
Method for reliable and safe communication of data in railway motor car application station Download PDFInfo
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- CN113473412A CN113473412A CN202110652838.9A CN202110652838A CN113473412A CN 113473412 A CN113473412 A CN 113473412A CN 202110652838 A CN202110652838 A CN 202110652838A CN 113473412 A CN113473412 A CN 113473412A
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- 230000005540 biological transmission Effects 0.000 claims abstract description 16
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W4/42—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for mass transport vehicles, e.g. buses, trains or aircraft
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/03—Protecting confidentiality, e.g. by encryption
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/18—Network planning tools
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
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Abstract
The invention discloses a method for reliable and safe data communication in a railway motor car application institute, which comprises the following steps: setting a wireless communication module, and realizing data interaction between each terminal device and an interface server by using the wireless communication module; the wireless communication module includes: a plurality of 5G communication modules and a plurality of LoRa communication modules; the 5G communication modules realize data interaction by adopting a 5G public network communication technology, and each 5G communication module can support a network of a 5G network operator; each LoRa communication module supports LoRaWan protocol. The method can support high-speed stable transmission of large data throughput application and can also support multi-channel safe transmission of key service data by matching the 5G communication module and the LoRa communication module.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a reliable and safe data communication method in a railway motor car application station.
Background
Communication between railway equipment in the existing motor car application station mainly adopts optical fibers or network cables, and the problems of high engineering implementation difficulty, high cost and difficult maintenance exist.
At present, with the technological progress, especially the rapid development of wireless communication technology and device production process, the stability, security and data throughput of wireless communication are greatly improved, and the implementation cost is also greatly reduced. Therefore, there is a need to develop wireless communication schemes for railroad car applications.
Disclosure of Invention
The invention aims to provide a reliable and safe data communication method in a railway motor car application station, which can replace a communication scheme of a large number of buried optical fibers adopted in the existing motor car application station, greatly simplify the construction and maintenance cost of related projects and improve the availability and reliability of a system.
The purpose of the invention is realized by the following technical scheme:
a method for reliable and safe communication of data in a railway motor car operation center comprises the following steps: setting a wireless communication module, and realizing data interaction between each terminal device and an interface server by using the wireless communication module;
the wireless communication module includes: the system comprises a plurality of 5G communication modules, a plurality of LoRa communication modules and a micro control unit; the 5G communication modules realize data interaction by adopting a 5G public network communication technology, each 5G communication module can support a network of a 5G network operator, and the data interaction between the terminal equipment and the interface server is realized by matching with the micro control unit; each LoRa communication module supports LoRaWan protocol, and data interaction between terminal equipment and an interface server is realized by matching with a micro control unit.
The technical scheme provided by the invention can be seen that the technical scheme of 5G + LoRaWan wireless communication is used for reliable and safe data transmission in a railway motor car application station, the existing scheme based on wired equipment transmission can be replaced, the construction and maintenance cost of related projects is greatly simplified, and the availability and reliability of the system are improved.
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 the drawings without creative efforts.
FIG. 1 is a block diagram of a method for reliable and secure communication of data in a railroad car utility facility according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a 5G communication scheme provided by an embodiment of the present invention;
fig. 3 is a network architecture diagram of LoRaWan according to an embodiment of the present invention
Fig. 4 is a schematic diagram of a communication scheme of a LoRaWan wireless local area network according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a converged wireless communication scheme according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
In order to solve the technical problems in the prior art, the invention designs a wireless communication scheme aiming at the application of the railway motor car, and reduces the complexity and the implementation cost of engineering implementation on the premise of ensuring the stability and the safety of communication; the current wireless communication technology is characterized as follows: 1) through the application of CDMA and the evolution technology thereof, the data exchange rate of wireless communication is faster and the time delay is smaller. 2) By means of a large-scale intelligent antenna technology and an intelligent cellular network planning technology, the coverage area of a wireless communication area is larger, and communication blind areas do not exist. 3) The wireless communication is more stable and reliable through the channel coding technology, the intelligent flow control technology and other technologies. 4) The application of the data encryption technology provides powerful guarantee for wireless data security. 5) The technologies of wireless Internet and wireless local area networking are becoming mature, and the combined application of multi-network convergence technology is becoming a trend.
As shown in fig. 1, a Wireless communication module (Wireless Terminal) is provided for a framework diagram of a method for reliable and secure data communication in a railway motor car operation center according to an embodiment of the present invention, and data interaction between each Terminal device (Equipment) and an Interface SERVER (Interface SERVER) is implemented by using the Wireless communication module. The network shown in fig. 1 is many-to-many, supports flat management and multi-level network management, and selects a suitable network topology and parameters according to the number of terminal devices, the data exchange mode, the size of data volume and the data exchange direction.
The wireless communication module is the core technology of the scheme, and the design of the wireless terminal communication module is the basis for ensuring the reliability, stability and safety of communication.
In the embodiment of the invention, the wireless communication module adopts two wireless communication modes at the same time. The first communication mode is based on a 5G public network communication technology, and achieves interaction of high speed, high stability and high safety of high-speed data by integrating a plurality of 5G public network networks. The second mode is to adopt a communication technology based on LoRaWan wireless local area network for reliable transmission of low-speed key data so as to ensure that the key service data can be communicated safely and reliably.
The following description is directed to these two wireless communication schemes, as well as a converged wireless communication scheme.
And implementing the first and 5G communication scheme.
The fifth Generation mobile communication technology (5th Generation mobile networks or 5th Generation with less systems, 5th-Generation, 5G or 5G technology for short) is the latest Generation cellular mobile communication technology, and is also an extension following 4G (LTE-A, WiMax), 3G (UMTS, LTE) and 2G (gsm) systems. The performance goals of 5G are high data rates, reduced latency, energy savings, reduced cost, increased system capacity, and large-scale device connectivity. The ITU IMT-2020 specification requires an end-to-end delay of 1ms in 5G ideal conditions, with a typical delay control within 10ms, and the communication delay can be shortened by about 1 order. The average bandwidth is several Gbps, the highest bandwidth can reach 20Gbit/s, and the communication transmission rate is improved by more than 2 magnitude.
As shown in fig. 2, a plurality of 5G communication modules are integrated in the wireless communication module, and a plurality of networks of different operators can be simultaneously online. In the embodiment of the invention, each 5G communication module can support a network of a 5G network operator, and in the implementation stage, a plurality of communication modules all adopt the same network operator network or adopt different network operators.
Correspondingly, the wireless communication module is also provided with a Micro Control Unit (MCU), which is connected with all 5G communication modules and is responsible for sub-packaging and packaging various application data at an application layer, supporting the backup transmission and reception of the same kind of data of the same application and also supporting the sub-packaging/packaging of high-speed data to support the high-capacity throughput.
In the embodiment of the invention, the micro control unit adopts a high-speed and high-performance DSP device to complete the processing of high-speed data and support the packaging, subpackaging, encrypting and decrypting of application data of more than 200 Mbit/s; in terms of software design, the supporting system specifies configuration and self-adaptively assigns a transmission mode, a packet packaging mode and an encryption and decryption mode according to an application layer protocol.
The 5G communication module is introduced, so that large-data throughput applications such as real-time video recording and watching, high-definition picture acquisition, real-time voice data transmission and the like can be safely and stably realized.
And secondly, realizing the communication scheme based on the LoRaWan wireless local area network.
LoRa (Long Range Radio ) is a recently widely used low power consumption local area network wireless physical layer standard. The LoRa is characterized in that the distance of propagation is longer than that of other wireless modes under the same power consumption condition, the unification of low power consumption and long distance is realized, and the distance of the LoRa is enlarged by 3-5 times than that of the traditional wireless radio frequency communication under the same power consumption condition.
As shown in fig. 3, the Network architecture diagram of LoRaWan includes, from left to right, terminal Nodes (End Nodes), LoRa gateways (centralized or Gateway), Network servers (Network servers), and Application servers (Application servers). In LoRaWan's network, through gateway conversion protocol, convert the data of terminal node (i.e. all kinds of application sensors) to TCP/IP format and send to the network server in center.
The LoRa gateway is used for a long-distance star-shaped framework and supports multi-channel, multi-modulation transceiving and multi-channel simultaneous demodulation. Because the transmission characteristics of the LoRaWAN support simultaneous multi-signal demodulation on the same channel, it has a higher capacity than other lan communication protocols. The LoRa gateway uses RF devices other than end nodes as a transparent bridge to relay messages between end devices and a central network server. The terminal equipment unicasts the wireless communication message to one or more LoRa gateways, and the LoRa gateways are connected to a central network server to other application servers through a standard TCP/IP protocol.
LoRaWAN is a communication protocol based on LoRa technology. The LoRaWan technology has been widely applied to various applications of the internet of things, and the stability, reliability and networking flexibility of the LoRaWan technology are acknowledged by the industry. In the embodiment of the invention, the LoRaWan technology is adopted to effectively supplement a 5G public network communication mode and is mainly used for transmitting low-speed safety data.
As shown in fig. 4, a plurality of LoRa communication modules are integrated in the wireless communication module; each LoRa communication module supports LoRaWan protocol. According to the corresponding bytes of the application layer protocol, the relevant parameters of the LoRa communication module can be modified to specify the frequency, the channel and the data rate.
Correspondingly, the micro control unit is also connected with all LoRa communication modules, and assigns a transmission mode, a packet packaging mode and an encryption and decryption mode in a self-adaptive mode according to an application layer protocol. The method comprises the steps of evaluating an LoRa networking mode and network signal quality through analyzing application layer data, and configuring the networking mode, channel allocation and working frequency through an application layer protocol.
And thirdly, a converged wireless communication scheme.
In the embodiment of the invention, the wireless communication module integrates the two wireless communication technologies, namely integrates the two types of communication modules (5G communication module and LoRa communication module) and adopts the unified data aggregation micro control unit for control, as shown in FIG. 5, for a single terminal device, data interaction is carried out through the two types of communication modules, so that high-speed stable transmission of large data throughput application can be supported, and multi-channel safe transmission of key data can also be supported. The invention can meet the related requirements of various remote communication, monitoring and other information interaction in the railway motor car application station.
It will be clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be performed by different functional modules according to needs, that is, the internal structure of the system is divided into different functional modules to perform all or part of the above described functions.
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 (3)
1. A method for reliable and safe communication of data in a railway motor car operation post is characterized by comprising the following steps: setting a wireless communication module, and realizing data interaction between each terminal device and an interface server by using the wireless communication module;
the wireless communication module includes: the system comprises a plurality of 5G communication modules, a plurality of LoRa communication modules and a micro control unit; the 5G communication modules realize data interaction by adopting a 5G public network communication technology, each 5G communication module can support a network of a 5G network operator, and the data interaction between the terminal equipment and the interface server is realized by matching with the micro control unit; each LoRa communication module supports LoRaWan protocol, and data interaction between terminal equipment and an interface server is realized by matching with a micro control unit.
2. The method for reliable and safe data communication in a railway motor car operation post according to claim 1, wherein the micro control unit is connected with all 5G communication modules, is responsible for sub-packaging and packaging a plurality of application data at an application layer, supports the transmission and reception of the same data backup of the same application, and supports the packaging, sub-packaging, encryption and decryption of application data of more than 200 Mbit/s; in terms of software design, the supporting system specifies configuration and self-adaptively assigns a transmission mode, a packet packaging mode and an encryption and decryption mode according to an application layer protocol.
3. The method for reliable and safe data communication in a railway motor train operation post according to claim 1, wherein the micro control unit is connected with all LoRa communication modules, and adaptively assigns a transmission mode, a group packaging mode and an encryption and decryption mode according to an application layer protocol; the method comprises the steps of evaluating an LoRa networking mode and network signal quality through analyzing application layer data, and configuring the networking mode, channel allocation and working frequency through an application layer protocol.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115022842A (en) * | 2022-07-01 | 2022-09-06 | 广东飞达交通工程有限公司 | Distributed low-power-consumption high-fault-tolerance transmission system based on LoRa technology in tunnel |
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| CN212660179U (en) * | 2020-07-08 | 2021-03-05 | 利尔达科技集团股份有限公司 | 863-plus 870MHz LoRaWAN Internet of things gateway based on 5G |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110703190A (en) * | 2019-10-21 | 2020-01-17 | 桂林赛普电子科技有限公司 | Matrix type positioning and anti-theft monitoring method and system for railway skate |
| CN212660179U (en) * | 2020-07-08 | 2021-03-05 | 利尔达科技集团股份有限公司 | 863-plus 870MHz LoRaWAN Internet of things gateway based on 5G |
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| CN115022842A (en) * | 2022-07-01 | 2022-09-06 | 广东飞达交通工程有限公司 | Distributed low-power-consumption high-fault-tolerance transmission system based on LoRa technology in tunnel |
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