CN106658565A - Multilink preferential transmission method and device used for vehicle-ground wireless communication of rail traffic - Google Patents
Multilink preferential transmission method and device used for vehicle-ground wireless communication of rail traffic Download PDFInfo
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- CN106658565A CN106658565A CN201611108835.4A CN201611108835A CN106658565A CN 106658565 A CN106658565 A CN 106658565A CN 201611108835 A CN201611108835 A CN 201611108835A CN 106658565 A CN106658565 A CN 106658565A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 66
- 238000004891 communication Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000002159 abnormal effect Effects 0.000 claims description 6
- 230000006855 networking Effects 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 claims description 2
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract 1
- 230000008859 change Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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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
-
- 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
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/12—Communication route or path selection, e.g. power-based or shortest path routing based on transmission quality or channel quality
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/15—Setup of multiple wireless link connections
-
- H—ELECTRICITY
- 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
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention relates to a multilink preferential transmission method and device used for vehicle-ground wireless communication of rail traffic. The device includes a vehicle terminal, a communication network and a ground server connected in sequence. The vehicle terminal includes a first heartbeat module, a first data transmission module and modulator-demodulators connected in sequence. The ground server includes a second heartbeat module and a second data transmission module connected with each other. The modulator-demodulators are connected with the second data transmission module through the communication network. The method includes implementing the construction of vehicle-ground wireless links by adopting a plurality of LTE or WiFi modulator-demodulators; judging the state of the link in a way of sending and receiving heartbeat frames on the links and finally inquiring the states of the links in sequence according to link priority and sending data. Compared with the prior art, the method and device provided by the invention has advantages of wide application range, high reliability, high utilization rate, flexible configuration, simple and convenient maintenance and the like.
Description
Technical field
The present invention relates to a kind of track traffic wireless communication system, more particularly, to a kind of wireless for rail transit field
The multilink of communication preferentially transmission method and device.
Background technology
Using CBTC (train automatic controlling system based on communication) as train operation control more than urban track traffic now
System processed.Its feature is that the two-way communication of train and ground installation is realized with communication medium, and its outstanding advantages can be real
Two-way communication between existing car-ground, and transmission information amount is big, and transmission speed is fast etc..
The train of CBTC systems and the communication of ground installation by the radio communication of train to trackside with trackside having to machine room
Line communication composition.The unimpeded and safe of vehicle-ground wireless communication is to ensure the important step that whole CBTC systems are normally run, now
Vehicle-ground wireless communication be that wireless network is accessed by WiFi network or LTE network by terminal, form single transmission link.
Existing vehicle-ground wireless communication system can only be run in independent WiFi network or independent LTE network, it is impossible to
WiFi and LTE is alternately disposed, or is run in the network of WiFi and LTE mixed deployments.
Existing each terminal of vehicle-ground wireless communication system only has access one and throws the net network, it is impossible to make full use of the trackside arranged
Wireless network, and when the network failure, unreliable state of the train in single-point connection.
Differentiation without priority between the data that existing vehicle-ground wireless communication system is transmitted by heterogeneous networks, it is necessary to logical
Crossing application layer software carries out priority processing, complex disposal process, and change or operator requirement change occurs in network environment
In the case of more, need to be changed by way of changing application layer software, maintenance difficulties are big.
The content of the invention
The purpose of the present invention is exactly the defect in order to overcome above-mentioned prior art to exist and provides a kind of for track traffic
The multilink of vehicle-ground wireless communication preferentially transmission method and device.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of multilink for rail vehicle ground wireless communication preferentially transmission method, the method is：Initially with many
The modem of platform LTE or WiFi, completes the foundation of car-ground radio link；Then by sending reception heartbeat frame on link
Mode, judge the state of link；The order of the last link priority according to setting inquires about successively the state of link, and sends
Data.
The method specifically includes following steps：
A) connection of link is completed by modem, then execution step b；
B) priority of link is set, guarantees that two ends arrange identical to the priority of same link in the provisioning process, no
Same link arranges different priority, then execution step c；
C) heartbeat frame is persistently sent and received on link, then execution step d；
D) by the transmission situation of the heartbeat frame of inquiry each of the links, the transmission state of all links is set, is then performed
Step e；
E) judge whether the link transmission is normal successively according to the height of link priority, if normal execution step f；
If abnormal execution step g；
F) in the selected normal link of transmission for a period of time；It is then back to step e；
G) network failure message is sent by man-machine interface, is then back to step e.
The device of a kind of multilink for rail vehicle ground wireless communication preferentially transmission method, including what is be sequentially connected
Car-mounted terminal, communication network and ground-based server, described car-mounted terminal includes the first heartbeat module, the first number being sequentially connected
According to transport module and modem, described ground-based server includes that the second heartbeat module being connected with each other and the second data are passed
Defeated module, described modem is connected by communication network with the second data transmission module.
Described modem includes LTE modems or WiFi modems, and described communication network includes
LTE network or WiFi network,
Described LTE modems are connected by LTE network with the second data transmission module, for launching and receiving
LTE signals；
Described WiFi modems are connected by WiFi network with the second data transmission module, for launching and receiving
WiFi signal.
The device also includes setting timer in a link, and the timer is connected with heartbeat module；
Described heartbeat module is connected with data transmission module, for continuing timing transmitting heartbeat in each of the links
Frame, receives heartbeat frame, starts the corresponding counter of the link in certain loss of link heartbeat frame, when counter reaches setting
The state of link is set into interruption during value, the corresponding counter of the link is started when broken link receives heartbeat frame,
The state of link is set to normally when counter reaches setting value.
Described heartbeat module is provided with the display for showing transmission link state.
Described data transmission module, for the state of transmission link that shown according to heartbeat module and respective link setting
The priority link that selects for transmission, the data of external system are transmitted on selected link, and pass in all links
Networking failure message is sent by man-machine interface during defeated interruption.
Compared with prior art, the present invention has advantages below：
1st, applicability is wide, due to being integrated with LTE modems and WiFi modems simultaneously, goes for individually
The hybrid network of LTE network, independent WiFi network and its LTE and WiFi；
2nd, reliability is high, and the real-time detection link shape by way of sending heartbeat frame on a plurality of wireless transmission link
State, the normal link of real-time selection current transmission, increased reliability；
3rd, utilization rate is high, and each station terminal can simultaneously access multi wireless links, makes full use of having for trackside deployment
Internet resources；
4th, flexible configuration, due to being that priority is arranged on different links in terminal, is flexibly defined on different circuits
Access priority；
5th, easy maintenance, the species of access network, quantity and its priority can be configured in terminal, can be not
In the case of change configuration, under different network environments data transfer is kept.
Description of the drawings
Fig. 1 is the flow chart of the present invention；
Fig. 2 is the apparatus structure schematic diagram of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is a part of embodiment of the present invention, rather than whole embodiments.Based on this
Embodiment in bright, the every other reality that those of ordinary skill in the art are obtained on the premise of creative work is not made
Example is applied, should all belong to the scope of protection of the invention.
Fig. 1 show the idiographic flow of the present invention.System performs the multilink detection transmission, completes data end to end
Transmission.By taking three links as an example, following steps are described in detail with reference to Fig. 1：
In step 401, the priority of link is set in terminal, two ends terminal-pair same link is guaranteed in the provisioning process
Priority arrange identical, different links arrange different priority, then execution step 402
In step 402, the terminal of both sides persistently sends and receives heartbeat frame on three links, send heartbeat frame when
Between at intervals of 50ms, then execution step 403.
In step 403, terminal collects the transmission of all links by the transmission situation of the heartbeat frame of inquiry each of the links
State.Then execution step 404.
In step 404, judge whether the link that priority is 1 transmits normally, if normal execution step 405；If
Abnormal execution step 406.
In step 405, in link 50ms that priority is 1.Then execution step 403；
In a step 406, judge whether the link that priority is 2 transmits normally, if normal execution step 407；If
Abnormal execution step 408.
In step 407, in link 50ms that priority is 2.Then execution step 403；
In a step 408, judge whether the link that priority is 3 transmits normally, if normal execution step 409；If
Abnormal execution step 410.
In step 409, in link 50ms that priority is 3.Then execution step 403；
In step 410, terminal sends network failure message by man-machine interface.Then execution step 403；
The method that above-mentioned urban track traffic vehicle-ground wireless communication multilink is preferentially transmitted, its application scenarios mainly has following
Two aspects：
When the 1st, using double set LTE networks, can be respectively resident with integrated two pieces of LTE modems in the single-ended equipment of vehicle
In two LTE networks, car ground data can preferentially be transmitted, and increase car-ground radio number of links and wireless network redundancy
Property.
When the 2nd, using LTE and WiFi mixed networking, such as one phase of project building time is more early, is carried out using WiFi network
The transmission of car ground, and extension line or on the second phase, using LTE network, then using the method and device, only need to enter to a phase vehicle
The a small amount of transformation of row, you can realize one, the compatible and mixed race of the second stage of vehicle improves original WiFi system utilization rate, reduce to build and throw
Money cost.
The heartbeat module of terminal of the present invention sends and receives heartbeat frame simultaneously by data transmission module on three links,
Data transmission module detects the transmission state of an each of the links every 50ms, and external system is needed into the data of transmission by working as
The link of front available limit priority is transmitted.If the transmission state of all links is abnormal, in man-machine interface
The alarm information of network failure is sent, and still according to the transmission state that an each of the links is detected every 50ms.
As shown in Fig. 2 a kind of multilink for rail vehicle ground wireless communication preferentially transmitting device, including connecting successively
The car-mounted terminal 1, communication network for connecing and ground-based server 4, described car-mounted terminal 1 includes the first heartbeat module being sequentially connected
12nd, first data transmission module 11 and modem, described ground-based server 4 includes the second heartbeat module being connected with each other
41 and second data transmission module 42, described modem is connected by communication network with the second data transmission module 42.
Described modem includes LTE modems 13 or WiFi modems 14, described communication network
Including LTE network 2 or WiFi network 3,
Described LTE modems 13 are connected by LTE network 2 with the second data transmission module 41, for transmitting and
Receive LTE signals；
Described WiFi modems 14 are connected by WiFi network 3 with the second data transmission module 41, for launching
With reception WiFi signal.
The device also includes setting timer in a link, and the timer is connected with heartbeat module；Described heartbeat module
It is connected with data transmission module, for continuing timing transmitting heartbeat frame in each of the links, heartbeat frame is received, in certain link
Start the corresponding counter of the link when losing heartbeat frame, during when counter reaches setting value the state of link is set to
It is disconnected, the corresponding counter of the link is started when broken link receives heartbeat frame, when counter reaches setting value by chain
The state on road is set to normally.
Described heartbeat module is provided with the display for showing transmission link state.Described data transmission module, uses
The link for transmission is selected in the state of the transmission link shown according to heartbeat module and the priority of respective link setting, will
The data of external system are transmitted on selected link, and send networking by man-machine interface when all link transmissions are interrupted
Failure message.
The above, the only specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, various equivalent modifications can be readily occurred in or replaced
Change, these modifications or replacement all should be included within the scope of the present invention.Therefore, protection scope of the present invention should be with right
The protection domain of requirement is defined.
Claims (7)
1. a kind of multilink for rail vehicle ground wireless communication preferentially transmission method, it is characterised in that the method is：It is first
First using multiple stage LTE or the modem of WiFi, the foundation of car-ground radio link is completed；Then connect by sending on link
Get into the frame of mind for work the mode of frame-skipping, judge the state of link；The order of the last link priority according to setting inquires about successively the shape of link
State, and send data.
2. a kind of multilink for rail vehicle ground wireless communication according to claim 1 preferentially transmission method, its
It is characterised by, the method specifically includes following steps：
A) connection of link is completed by modem, then execution step b；
B) priority of link is set, guarantees that two ends arrange identical to the priority of same link in the provisioning process, it is different
Link arranges different priority, then execution step c；
C) heartbeat frame is persistently sent and received on link, then execution step d；
D) by the transmission situation of the heartbeat frame of inquiry each of the links, the transmission state of all links is set, then execution step
e；
E) judge whether the link transmission is normal successively according to the height of link priority, if normal execution step f；If
Abnormal execution step g；
F) in the selected normal link of transmission for a period of time；It is then back to step e；
G) network failure message is sent by man-machine interface, is then back to step e.
3. a kind of dress of the preferentially transmission method of the multilink for rail vehicle ground wireless communication implemented shown in claim 1
Put, it is characterised in that including the car-mounted terminal, communication network and ground-based server that are sequentially connected, described car-mounted terminal includes
The first heartbeat module, first data transmission module and the modem being sequentially connected, described ground-based server includes mutual
Second heartbeat module and the second data transmission module of connection, described modem is passed by communication network and the second data
Defeated module connection.
4. device according to claim 3, it is characterised in that described modem include LTE modems or
WiFi modems, described communication network includes LTE network or WiFi network,
Described LTE modems are connected by LTE network with the second data transmission module, for launching and receiving LTE letters
Number；
Described WiFi modems are connected by WiFi network with the second data transmission module, for launching and receiving WiFi
Signal.
5. device according to claim 3, it is characterised in that also including the timer for setting in a link, the timer with
Heartbeat module connects；
Described heartbeat module is connected with data transmission module, for continuing timing transmitting heartbeat frame in each of the links, connects
Get into the frame of mind for work frame-skipping, start the corresponding counter of the link in certain loss of link heartbeat frame, when counter reaches setting value
The state of link is set to interrupt, the corresponding counter of the link is started when broken link receives heartbeat frame, work as meter
Number device is set to the state of link normally when reaching setting value.
6. device according to claim 3, it is characterised in that described heartbeat module is provided with for showing transmission link shape
The display of state.
7. device according to claim 3, it is characterised in that described data transmission module, for according to heartbeat module
The priority of the state of the transmission link of display and respective link setting selects the link for transmission, by the data of external system
Transmit on selected link, and networking failure message is sent by man-machine interface when all link transmissions are interrupted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611108835.4A CN106658565B (en) | 2016-12-06 | 2016-12-06 | Multilink preferred transmission method and device for wireless communication of rail transit train-ground |
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|---|---|---|---|
| CN201611108835.4A CN106658565B (en) | 2016-12-06 | 2016-12-06 | Multilink preferred transmission method and device for wireless communication of rail transit train-ground |
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| Publication Number | Publication Date |
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| CN106658565A true CN106658565A (en) | 2017-05-10 |
| CN106658565B CN106658565B (en) | 2024-02-20 |
Family
ID=58819768
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Cited By (8)
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| CN108566633A (en) * | 2018-03-21 | 2018-09-21 | 广州地铁集团有限公司 | A kind of vehicle ground data transmission method and system |
| CN108924901A (en) * | 2018-06-26 | 2018-11-30 | 新华三技术有限公司成都分公司 | communication link switching method and device |
| CN108933998A (en) * | 2018-07-02 | 2018-12-04 | 南京兴鼎升电气设备有限公司 | A kind of implementation method of the redundant wireless link protocol based on terminal device |
| CN109005554A (en) * | 2018-08-13 | 2018-12-14 | 武汉智慧地铁科技有限公司 | A kind of rail traffic link backup system and its backup method |
| CN109286914A (en) * | 2018-10-25 | 2019-01-29 | 中国铁道科学研究院集团有限公司通信信号研究所 | Integrate mobile data transfer system to multimode vehicle |
| CN109829345A (en) * | 2018-12-27 | 2019-05-31 | 苏州佳世达电通有限公司 | Reduce the method and scanning system the time required to scanning multiple transmission ports |
| CN110649995A (en) * | 2019-09-02 | 2020-01-03 | 熊猫智慧水务有限公司 | Intelligent double-path redundant communication networking system for water supply |
| CN114845925A (en) * | 2019-12-23 | 2022-08-02 | 泰雷兹管理与服务德国股份有限公司 | Method for transmitting data in a rail transit system, data transmission system, rail transit system with a data transmission system, and use of a communication unit on a field element |
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| CN108933998A (en) * | 2018-07-02 | 2018-12-04 | 南京兴鼎升电气设备有限公司 | A kind of implementation method of the redundant wireless link protocol based on terminal device |
| CN109005554A (en) * | 2018-08-13 | 2018-12-14 | 武汉智慧地铁科技有限公司 | A kind of rail traffic link backup system and its backup method |
| CN109286914A (en) * | 2018-10-25 | 2019-01-29 | 中国铁道科学研究院集团有限公司通信信号研究所 | Integrate mobile data transfer system to multimode vehicle |
| CN109286914B (en) * | 2018-10-25 | 2021-10-01 | 中国铁道科学研究院集团有限公司通信信号研究所 | Multi-mode train-ground integrated mobile data transmission system |
| CN109829345A (en) * | 2018-12-27 | 2019-05-31 | 苏州佳世达电通有限公司 | Reduce the method and scanning system the time required to scanning multiple transmission ports |
| CN109829345B (en) * | 2018-12-27 | 2022-03-08 | 苏州佳世达电通有限公司 | Method for reducing time required for scanning multiple transmission ports and scanning system |
| CN110649995A (en) * | 2019-09-02 | 2020-01-03 | 熊猫智慧水务有限公司 | Intelligent double-path redundant communication networking system for water supply |
| CN114845925A (en) * | 2019-12-23 | 2022-08-02 | 泰雷兹管理与服务德国股份有限公司 | Method for transmitting data in a rail transit system, data transmission system, rail transit system with a data transmission system, and use of a communication unit on a field element |
| CN114845925B (en) * | 2019-12-23 | 2024-03-05 | 泰雷兹管理与服务德国股份有限公司 | Method for transmitting data in a rail traffic system, data transmission system, rail traffic system with a data transmission system, and use of a communication unit on a field element |
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