LU101369B1 - New high-speed railway communication system based on a power line carrier communication technology - Google Patents
New high-speed railway communication system based on a power line carrier communication technology Download PDFInfo
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- LU101369B1 LU101369B1 LU101369A LU101369A LU101369B1 LU 101369 B1 LU101369 B1 LU 101369B1 LU 101369 A LU101369 A LU 101369A LU 101369 A LU101369 A LU 101369A LU 101369 B1 LU101369 B1 LU 101369B1
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- speed railway
- power line
- communication
- communication device
- pantograph
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
- H04B10/116—Visible light communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/544—Setting up communications; Call and signalling arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/10—Current supply arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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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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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mobile Radio Communication Systems (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The present invention discloses a new high-speed railway communication system based on a power line carrier communication technology, comprising a plurality of ground base stations arranged along a line, a pantograph-contact network system arranged above a high-speed railway train, and various mobile terminals carried by high-speed railway passengers, wherein adjacent ground base stations are connected and communicated by a cable; the ground base station is directly connected to a power line of a high-speed railway contact network through a cable; the power line of the high-speed railway contact network is overlapped with and connected to a pantograph at a top of the high-speed railway train; the pantograph is connected to a visible light communication device; and the visible light communication device is connected to the various mobile terminals carried by the high-speed railway passengers by wireless communication. Compared with the prior art, the technical solution of the present invention has advantages such as a low cost, reliable transmission and a high speed, and can provide a reasonable high-speed railway mobile communication system, so as to realize safe and reliable communication quality, and provide fast and high-quality mobile communication services and experiences for numerous high-speed railway users.
Description
BL-5106 LU101369 NEW HIGH-SPEED RAILWAY COMMUNICATION SYSTEM BASED ON POWER
LINE CARRIER COMMUNICATION TECHNOLOGY Technical field The present invention relates to the field of high-speed railway communication, in particular to a new high-speed railway communication system based on a power line carrier communication technology. Technical background A high-speed railway is the development trend of the world railway, and it is also a common demand of all the countries for the high-speed transportation development. As the railway industry of China follows the development path of independent technological innovation, through the successful implementation of the strategy of “introducing advanced technologies, joint design and production, and building Chinese brands”, the railway industry of China started from scratch, and has become a front-runner from a chasing runner to attract the world’s attention and has embarked on a road of high-speed railway development with Chinese characteristics in just over a decade. The “high-speed railway” was one high-tech term, and now it has become the most preferred means of transportation for an ordinary people in business and travel. At present, China has become a country in the world that has the most complete and most integrated high-speed railway system with the longest operating mileage, the highest operating speed, and the largest scale of construction. With the rapid development of the high-speed railway construction and high-speed railway core technology of China, the operating speed of China's high-speed railway continues to increase, and with the increase of the high-speed railway operating speed, high-speed railway passengers raise higher requirements in terms of network coverage, network environment security and network call quality in high-speed railway cars. Since the current high-speed wireless mobile communication level in the world still has a large gap compared with the public mobile communication level, especially in a high-speed mobile scene, the network | |
| 2 BL-5106 LU101369 coverage of high-speed trains is facing severe challenges. It is generally believed in the art that the well-known high-speed wireless mobile communication has three major technical difficulties. Firstly, there are a large vehicle body signal penetration loss of a high-speed train, Doppler frequency shift, and extremely short switching time of a mobile terminal. China's high-speed trains use a fully enclosed vehicle body structure, and the loss of wireless signals in a process of penetrating through the vehicle body is large. In particular, with the increase of the vehicle speed, the penetration loss will also become larger, resulting in a low terminal switching success rate, weak wireless signal coverage in a high-speed railway train car, etc. Secondly, in the high-speed mobile scene, as the speed of the high-speed railway train continues to increase, the Doppler frequency shift effect becomes more apparent, resulting in a series of problems such as wireless signal offsets, network access difficulties, increased data transmission error rates, and reduced handover success rates. Thirdly, in the high-speed mobile scene, the time of a mobile terminal traversing a cell is smaller than the handover response time of the mobile terminal, which may cause the mobile terminal to pass through an overlapping area before handover has been completed, thereby causing network problems such as off-network and call drop and cell handover failure, and affecting the user's service perception.
In view of the above three technical difficulties currently faced by the high-speed railway wireless mobile communication, the national railway department, major mobile communication operators, scientific research institutions of major universities and the like have invested a large amount of technologies, personnel and financial resources to study and improve the coverage and performance issues of wireless networks in high-speed railway train cars in the high-speed mobile scene, and have proposed many high-speed railway communication system solutions, such as Long Time Evolution Advanced (LTE) communication schemes, wherein the LTE communication scheme provides a wireless mobile communication system with a high data rate, a large bandwidth, a low latency and high spectrum utilization, and adopts various advanced technologies such as an orthogonal frequency division multiplexing technology and an MIMO technology, which can provide a wireless communication access service of more than 100 kbps for passengers of a high-speed railway train with a speed of 350 Km/h. However, in | |
| 3 BL-5106 LU101369 the high-speed mobile scene, the LTE network in the high-speed railway train cars still faces the conventional problems such as the large vehicle body signal penetration loss of the high-speed railway train, Doppler frequency shift, and extremely short switching time of the mobile terminal.
In addition, it is required to solve the problems such as frequent cell handover and reselection, and call voice fallback or redirection.
Therefore, a technical problem that is currently urgently needed to be solved is how to design a reasonable high-speed railway mobile communication system in the high-speed mobile scene, so as to realize safe and reliable communication quality, and provide fast and high-quality mobile communication services and experiences for numerous high-speed railway users.
Summary of the invention
A main object of the present invention is to propose a new high-speed railway communication system based on a power line carrier communication technology with a low cost, reliable transmission and a high speed, which is intended to provide a reasonable high-speed railway mobile communication system, so as to realize safe and reliable communication quality, and provide fast and high-quality mobile communication services and experiences for numerous high-speed railway users.
To achieve the above object, the present invention proposes a new high-speed railway communication system based on a power line carrier communication technology, comprising a plurality of ground base stations arranged along a line, a pantograph-contact network system arranged above a high-speed railway train, and various mobile terminals carried by high-speed railway passengers, wherein adjacent ground base stations are connected and communicated by a cable; the ground base station is directly connected to a power line of a high-speed railway contact network through a cable; the power line of the high-speed railway contact network is overlapped with and connected to a pantograph at a top of the high-speed railway train; the pantograph is connected to a visible light communication device; and the visible light communication device is connected to | |
BL-5106 LU101369 the various mobile terminals carried by the high-speed railway passengers by wireless communication. Preferably, the pantograph-contact network system comprises a high-speed railway contact network using the power line carrier communication technology and a plurality of pantographs using the power line carrier communication technology. Preferably, the visible light communication device emits visible light inside a car, and is connected and communicated with the various mobile terminals carried by the high-speed railway passengers. Preferably, the visible light communication device comprises a VLC communication device connected with the pantograph and an illumination LED lamp connected to the VLC communication device.
Preferably, the visible light communication device is replaceable by a generalized WiFi communication device or a wired communication device, and the WiFi communication device is connected to the various mobile terminals carried by the high-speed railway passengers by wireless communication, or the wired communication device is connected to the various mobile terminals carried by the high-speed railway passengers by wired communication. Since the high-speed railway passengers sit in their seats most of the time, they can actualize a connection directly using wired communication. Preferably, the high-speed railway train comprises at least 8N cars, where N is a positive integer. Preferably, a communication signal of the ground base station is transmitted via a communication cable, the communication signal arrives at a ground base station signal transmitting end and is modulated and line coupled, and then is superimposed on the power line of the high-speed railway contact network and transmitted to a ground base station signal receiving end located at the top of the high-speed railway train, after being coupled and filtered, the modulated signal is filtered out from the power line, and then is demodulated and restored into a data | |
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BL-5106 LU101369 signal; and after a high-speed railway train signal is transmitted to a high-speed railway train signal transmitting end located at the top of the high-speed railway train, it is modulated and line coupled, and finally is superimposed on the power line in the pantograph, is transmitted to a high-speed railway train signal receiving 5 end of the ground station by the power line, after being coupled and filtered, the modulated signal is filtered out from the power line, and then is demodulated and restored into a data signal, and the restored data signal is transmitted back to the ground base station by a communication cable.
The technical solution of the present invention has the following advantages over the prior art: The technical solution of the present invention adopts the power line carrier communication technology to superimpose the transmission signal on the power line for transmission, and thus there is no need to lay a dedicated communication line.
The power line of the pantograph-contact network system can be directly used for transmitting the signal, which can not only save the material cost and labor cost, and can also realize high-quality communication requirements.
In addition, a conventional wireless communication mode is changed to a wired communication mode.
Thus, the technical problems of poor signal quality, slow Internet access, poor call quality in the high-speed railway train cars due to the Doppler frequency shift effect, large vehicle body signal penetration loss of the high-speed railway train, and extremely short switching time of the mobile terminal in the high-speed railway wireless communication mode can be effectively avoided.
Strong internal signal quality, fast Internet access and high call quality are realized in the high-speed railway train cars in the high-speed mobile scene, providing high-quality mobile communication services and experiences for high-speed railway passengers in the high-speed mobile scene, so as to meet increasing requirements for the data transmission rate and service quality of the high-speed railway passengers.
At the same time, the visible light communication technology or the generalized WiFi communication device or wired communication device is adopted inside the high-speed railway train cars to cover, avoiding direct link between a single mobile | |
| 6 BL-5106 LU101369 terminal and a ground base station, and effectively solving the problem of frequent cell handover and reselection. By using the illumination LED inside the high-speed railway train cars as the signal light source, electromagnetic radiation and electromagnetic interference are avoided, and there are the advantages such as green environmental protection, energy saving and emission reduction. In addition, the use of visible light as a carrier of a signal does not cause discomfort to the high-speed railway passengers. In addition, the total power of the illumination LED light source inside the high-speed railway train cars can reach several tens of watts or more, which ensures the signal power used for communication and has the potential of high-speed communication. The spectrum can be used without authorization, and the problem of insufficient existing radio spectrum resources is effectively solved. As long as a VLC device is installed on the basis of the existing LED devices of the high-speed railway train, good communication may be achieved with a simple system construction and a low cost.
Brief description of the drawings In order to more clearly illustrate the technical solutions in embodiments of the present invention or the prior art, the accompanying drawings needed to be used in the description of the embodiments or the prior art will be briefly described below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention, and other accompanying drawings can be obtained by ordinary persons skilled in the art from the structures illustrated in these accompanying drawings without any inventive efforts.
Fig. 1 is a schematic structural diagram of a new high-speed railway communication system based on a power carrier communication technology according to the present invention. The implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawing. Detailed description of the embodiments | |
BL-5106 LU101369 The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to 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, and not all the embodiments. All other embodiments obtained by ordinary persons skilled in the art based on the embodiments of the present invention without creative efforts - are within the scope of the present invention. It should be noted that if there is a directional indication (such as up, down, left, right, front, back, ...) mentioned in the embodiments of the present invention, the directional indication is only used to explain the relative positional relationship between components, motion status, and the like in a specific posture (as shown in the drawing), and if the specific posture changes, the directional indication also changes accordingly.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of the "first", "second", etc. is used for the purpose of description only, and is not to be construed as an its relative importance or implicit indication of the number of technical features indicated. Thus, the features defined by "first" or "second" may include at least one of the features, either explicitly or implicitly. In addition, the technical solutions among the various embodiments may be combined with each other, but must be based on the enablement of those skilled in the art, and when the combination of the technical solutions is contradictory or impossible to implement, it should be considered that the combination of the technical solutions does not exist, and is not within the scope of protection claimed by the present invention. The present invention provides a new high-speed railway communication system based on a power line carrier communication technology.
Referring to FIG. 1, a new high-speed railway communication system based on a power line carrier communication technology according to an embodiment of the present invention includes a plurality of ground base stations arranged along a line, a pantograph-contact network system arranged above a high-speed railway train, :
| | 8 BL-5106 LU101369 and various mobile terminals carried by high-speed railway passengers.
Adjacent ground base stations are connected and communicated by a cable, the ground base station is directly connected to a power line of a high-speed railway contact network through a cable, the power line of the high-speed railway contact network is overlapped with and connected to a pantograph at a top of the high-speed railway train, the pantograph is connected to a visible light communication device, and the visible light communication device is connected to various mobile terminals carried by the high-speed railway passengers by wireless communication.
The visible light communication device located on the top in the high-speed railway train may be replaced with a generalized WiFi communication device or a wired communication device.
The WiFi communication device is connected to various mobile terminals carried by the high-speed railway passengers by wireless communication.
The wired communication device is connected to various mobile terminals carried by the high-speed railway passengers by wired communication.
Since the high-speed railway passengers sit in their seats most of the time, they can actualize a connection directly using wired communication.
Specifically, the pantograph / high-speed railway contact network system of the present embodiment includes a high-speed railway contact network using the power line carrier communication technology and a plurality of pantographs using the power line carrier communication technology.
The pantograph is connected to a visible light communication device arranged inside a car body of the high-speed railway train by a cable.
The visible light communication device emits visible light and is connected to various mobile terminals carried by the high-speed railway passengers.
In other embodiments of the present invention, a WiFi communication device is connected to various mobile terminals carried by the high-speed railway passengers through wireless communication, and/or a wired communication device is connected to various mobile terminals carried by the high-speed railway passengers by wired communication.
Preferably, the visible light communication device of the present embodiment includes a VLC communication device connected to the pantograph and an illumination LED lamp connected to the VLC communication device.
The visible light communication technology is adopted to cover, so that broadband business requirements of various mobile terminals carried by the high-speed railway passengers may be met. : |
BL-5106 LU101369 When the new high-speed railway communication system based on the power line carrier communication technology of the embodiment of the present invention operates, a communication signal of the ground base station is transmitted via a communication cable, and the communication signal arrives at a ground base station signal transmitting end and is modulated and line coupled, and then is superimposed on the power line of the high-speed railway contact network and transmitted to a ground base station signal receiving end located at the top of the high-speed railway train. After being coupled and filtered, the modulated signal is filtered out from the power line, and then is demodulated and restored into a data signal. After a high-speed railway train signal is transmitted to a high-speed railway train signal transmitting end located at the top of the high-speed railway train, it is modulated and line coupled, and finally is superimposed on the power line in the pantograph, is transmitted to a high-speed railway train signal receiving end of the ground station by the power line. After being coupled and filtered, the modulated signal is filtered out from the power line, and then is demodulated and restored into a data signal, and the restored data signal is transmitted back to the ground base station by a communication cable.
The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the invention. All equivalent structural variants made by using the description and drawings of the present invention, or direct or indirect applications thereof in other related technical fields, in the concept of the present invention, are encompassed within the scope of patent protection of the present invention.
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Claims (7)
1. Anew high-speed railway communication system based on a power line carrier communication technology, characterized in that it comprises a plurality of ground base stations arranged along a line, a pantograph-contact network system arranged above a high-speed railway train, and various mobile terminals carried by high-speed railway passengers, wherein adjacent ground base stations are connected and communicated by a cable; the ground base station is directly connected to a power line of a high-speed railway contact network through a cable; the power line of the high-speed railway contact network is overlapped with and connected to a pantograph at a top of the high-speed railway train; the pantograph is connected to a visible light communication device; and the visible light communication device is connected to the various mobile terminals carried by the high-speed railway passengers by wireless communication.
2. The new high-speed railway communication system of claim 1, characterized in that the pantograph-contact network system comprises a high-speed railway contact network using the power line carrier communication technology and a plurality of pantographs using the power line carrier communication technology.
3. The new high-speed railway communication system of claim 2, characterized in that the visible light communication device emits visible light inside a car, and is connected and communicated with the various mobile terminals carried by the high-speed railway passengers.
4. The new high-speed railway communication system of claim 3, characterized in that the visible light communication device comprises a VLC communication device connected with the pantograph and an illumination LED lamp connected to the VLC communication device.
5. The new high-speed railway communication system of claim 3, characterized in that the visible light communication device is replaceable by a generalized WiFi | i
| 11 BL-5106 LU101369 communication device or a wired communication device, and the WiFi communication device is connected to the various mobile terminals carried by the high-speed railway passengers by wireless communication, or the wired communication device is connected to the various mobile terminals carried by the high-speed railway passengers by wired communication.
6. The new high-speed railway communication system of claim 1, characterized in that the high-speed railway train comprises at least 8N cars, where N is a positive integer.
7. The new high-speed railway communication system of claim 4, characterized in that a communication signal of the ground base station is transmitted via a communication cable, the communication signal arrives at a ground base station signal transmitting end and is modulated and line coupled, and then is superimposed on the power line of the high-speed railway contact network and transmitted to a ground base station signal receiving end located at the top of the high-speed railway train, after being coupled and filtered, the modulated signal is filtered out from the power line, and then is demodulated and restored into a data signal; and after a high-speed railway train signal is transmitted to a high-speed railway train signal transmitting end located at the top of the high-speed railway train, it is modulated and line coupled, and finally is superimposed on the power line in the pantograph, is transmitted to a high-speed railway train signal receiving end of the ground station by the power line, after being coupled and filtered, the modulated signal is filtered out from the power line, and then is demodulated and restored into a data signal, and the restored data signal is transmitted back to the ground base station by a communication cable. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910485850.8A CN110247680A (en) | 2019-06-05 | 2019-06-05 | A kind of novel high-speed rail communication system based on power-line carrier communication |
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| LU101369B1 true LU101369B1 (en) | 2020-01-07 |
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| LU101369A LU101369B1 (en) | 2019-06-05 | 2019-08-28 | New high-speed railway communication system based on a power line carrier communication technology |
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| LU (1) | LU101369B1 (en) |
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| CN110834653B (en) * | 2019-10-15 | 2024-03-19 | 上海新海信通信息技术有限公司 | Urban rail transit rail break monitoring system and method |
| CN111355516A (en) * | 2020-03-23 | 2020-06-30 | 深圳市大拿科技有限公司 | Short-distance communication method and system for rail transit transport vehicle |
| CN117579406A (en) * | 2024-01-15 | 2024-02-20 | 中铁一局集团电务工程有限公司 | Trolley bus, communication method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP1704648A2 (en) * | 2003-12-30 | 2006-09-27 | Anthony Whelan | Broadband data services over vehicle power lines |
| CN102082713B (en) * | 2010-12-22 | 2012-09-26 | 深圳市华讯方舟科技有限公司 | High-speed rail mobile communication system and working method thereof |
| CN202679357U (en) * | 2012-07-20 | 2013-01-16 | 天津工大瑞工光电技术有限公司 | Power line and visible light-based communication system |
| CN102752025A (en) * | 2012-07-20 | 2012-10-24 | 天津工大瑞工光电技术有限公司 | Communication system based on power line and visible lights |
| CN203632665U (en) * | 2013-12-02 | 2014-06-04 | 国家电网公司 | Medium-voltage power-line carrier communication system based on railway pantograph |
| CN105763257B (en) * | 2016-04-25 | 2018-08-17 | 北京科技大学 | A kind of high ferro communication system |
| CN106740988B (en) * | 2016-11-17 | 2019-02-05 | 胡佳 | A kind of train communication signal realization system |
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- 2019-06-05 CN CN201910485850.8A patent/CN110247680A/en active Pending
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| Publication number | Publication date |
|---|---|
| CN110247680A (en) | 2019-09-17 |
| RU2019130029A (en) | 2021-03-25 |
| RU2019130029A3 (en) | 2022-01-21 |
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