CN106375076A - Method and system based on train data in frame structure transmission area - Google Patents
Method and system based on train data in frame structure transmission area Download PDFInfo
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- CN106375076A CN106375076A CN201610800029.7A CN201610800029A CN106375076A CN 106375076 A CN106375076 A CN 106375076A CN 201610800029 A CN201610800029 A CN 201610800029A CN 106375076 A CN106375076 A CN 106375076A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
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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
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
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- Engineering & Computer Science (AREA)
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- Computer Networks & Wireless Communication (AREA)
- Health & Medical Sciences (AREA)
- Computing Systems (AREA)
- General Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Embodiments of the present invention disclose a method and a system based on train data in a frame structure transmission area. The method comprises the steps of acquiring, by an area control unit in a train-ground communication system, train identifiers of all trains covered by a ground base station communicating with the area control unit; identifying timeslots respectively corresponding to all train identifiers in a TDMA frame; writing communication data of each train in the timeslot corresponding to the train identifier in the TDMA frame; sending transmission data to the base station communicated with the area control unit based on the TDMA protocol; acquiring, based on the train identifier, timeslot data corresponding to the train identifier covered at present; and sending, by the ground base station based on a millimeter wave communication manner, the corresponding timeslot data to the covered train. Different train data is transmitted based on the timeslot of the TDMA protocol, so that communication of multiple trains in the network covered by the area control unit is realized.
Description
Technical field
The present invention relates to communication technical field, the side of train data in more particularly, to a kind of transmission region based on frame structure
Method.
Background technology
Gsm-r (gsm for railway) Chinese full name is Railway Mobile Radio system standard, and China covers the most now
Big gsm network standard is similar, is the mobile communication railway dedicated system that first Chinese is introduced from Europe.Technology with gsm
Reach its maturity, range expands rapidly, cost is gradually reduced, and due to user is rapid extend in the case of, cluster
The problems of mobile communication solution is increasingly prominent, and the Railway Mobile Radio system in Europe is finally positioned the side of gsm
Formula, that is, the key element that some suitable high-speed mobile environments use is added on gsm standard, this technology is in the initiation of gsm
Regional Europe is praised highly, and Germany and the country such as France, Holland, Switzerland have carried out distributing telephone numbers of gsm-r along the railway.
Gsm-r is a kind of professional radio digital communication system exclusively for Railway Design, based on gsm systems technology platform,
The features such as railway communication train scheduling, Train Control, support bullet train, provide the additional function of customization for railway operation
A kind of economical and efficient integration radio communication system, and the characteristic that Railway Mobile Radio is had (grouies busy, group is exhaled, preferentially
Rank, intrusion, the function such as toll breakdown) add, constitute the solution that gsmr is used for the global system for mobile communications of railway.From collection
From the perspective of group communication, gsm-r is a kind of digital group system, is provided that train dispatch radio communication, the communication that makes up of trains, meets an urgent need
The function of voice communication such as communication, the communication of maintenance group.It is the wireless of 0-500km/ hour that gsm-r can meet train running speed
Communicating requirement, safety is good.Gsm-r can be used as the good transmission platform of signal and train control system, etcs Europe just in test
Continent train control system (also referred to as fzb) and the train control system (ffb) of another kind of low cost being used for less than 160 kilometers, all
It is as transmission platform using gsm-r.
The data communication that existing gsm-r is realized for train operation, its by continuous identification mobile terminal identification Lai
Transmit different data, the mobile communication under this single environment for train is arranged net, there is provided one kind is based on Region control list
Unit associates a kind of bicyclic communication network, this bicyclic communication network be distributed in high speed railway track along the line on, it is right how to realize
The communication of multiple trains on this communication network, it is desirable to provide a kind of new technical scheme could be realized.
Content of the invention
It is an object of the invention to overcoming the deficiencies in the prior art, the invention provides a kind of be based on frame structure transmission region
The method and system of interior train data, during for multiple train communication pattern under double loop network pattern, based on train-ground communication system
System realizes the communication and between multiple train.
In order to solve the above problems, the method that the present invention proposes train data in a kind of transmission region based on frame structure,
Comprise the steps:
Region control unit in land mobile communication system obtains and is in the ground base station that described Region control unit is communicated
The train mark of each train being covered；
Identify time slot corresponding in tdma frame in for each train mark；
To each train mark in tdma frame in corresponding to time slot write each train communication data；
Transmission data is sent to the ground base station that Region control unit is communicated based on tdma agreement；
The train mark of the train that ground base station acquisition is currently covered, and currently covered based on train mark acquisition
The corresponding time slot data of train mark；
The mode based on millimetre-wave attenuator for the described ground base station sends corresponding time slot data to the train being covered.
Described tdma frame includes multiple time slots, and each of multiple time slots time slot can distribute and is in described Region control list
The different trains that the ground base station that unit is communicated is covered, one of multiple time slots time slot is conventional data information.
Described conventional data information includes: the code error rate of wireless channel of running train is estimated, diagnostic message is transmitted, broadcast letter
Number.
Time slot corresponding to described tdma frame in includes: bit synchronization guidance code, frame swynchronization code, link information, train address
And status information, fortune control data, internet data, protection time slot.
The described tdma frame period is 32ms, and each time is 2ms.
Accordingly, the embodiment of the present invention also proposed a kind of system of train data in transmission region based on frame structure, bag
Include:
Region control unit, is in, for obtaining, each row that the ground base station that described Region control unit communicated is covered
The train mark of car；Identify time slot corresponding in tdma frame in for each train mark；Identify in tdma frame in institute to each train
Corresponding time slot writes each train communication data；Sent to the ground base station that Region control unit is communicated based on tdma agreement and pass
Transmission of data；
Ground base station, the train for obtaining the train currently being covered identifies, and obtains current institute based on train mark
The time slot data corresponding to train mark covering；And the mode based on millimetre-wave attenuator is right to the train transmission institute being covered
The time slot data answered.
Tdma frame includes multiple time slots, and each of multiple time slots time slot can distribute and is in described Region control unit institute
The different trains that the ground base station of communication is covered, one of multiple time slots time slot is conventional data information.
Described conventional data information includes: the code error rate of wireless channel of running train is estimated, diagnostic message is transmitted, broadcast letter
Number.
Time slot corresponding to described tdma frame in includes: bit synchronization guidance code, frame swynchronization code, link information, train address
And status information, fortune control data, internet data, protection time slot.
The described tdma frame period is 32ms, and each time is 2ms.
In embodiments of the present invention, in conjunction with the bicyclic communication network architecture in car ground Data-Link overall plan, based on tdma association
The data of the slot transmission difference train of view, it is possible to achieve the multiple trains under the network that this Region control unit is covered
Communication.When realizing tip transition, can be using corresponding identification of base stations mode, to transmit corresponding data message, thus ensureing
Total data transfer arriving point is it is achieved that the data communication in different lines workshop.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, acceptable
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the method flow diagram based on train data in frame structure transmission region in the embodiment of the present invention；
Fig. 2 is the structural representation of the bicyclic communication network that the Local Area Network in the embodiment of the present invention associates；
Fig. 3 is the tdma frame structure schematic diagram during the present invention is implemented；
Fig. 4 is the tdma slotted frame structure schematic diagram in the embodiment of the present invention；
Fig. 5 is the system structure diagram based on train data in frame structure transmission region in the embodiment 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 description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
The method based on train data in frame structure transmission region in the embodiment of the present invention, comprising: train-ground communication system
Region control unit in system obtains the row being in each train that the ground base station that described Region control unit communicated is covered
Logo is known；Identify time slot corresponding in tdma frame in for each train mark；Identify corresponding to tdma frame in each train
Time slot writes each train communication data；Transmission number is sent to the ground base station that Region control unit is communicated based on tdma agreement
According to；The train mark of the train that ground base station acquisition is currently covered, and the train currently being covered is obtained based on train mark
The corresponding time slot data of mark；The mode based on millimetre-wave attenuator for the described ground base station sends corresponding to the train being covered
Time slot data.
Specifically, Fig. 1 shows the method stream based on train data in frame structure transmission region in the embodiment of the present invention
Cheng Tu, specifically includes as follows:
Fig. 2 shows the structural representation of the bicyclic communication network that the Local Area Network in the embodiment of the present invention associates, area
Domain control unit is associated with bicyclic communication network, that is, have a ring group station and b ring group station, each communication network has correlation therewith
The base station of connection, this two communication networks are all simultaneously located on Along Railway, and that is, there are several ground base stations, b ring group in a ring group station
There are several ground base stations at station, the base station cross-cutting distribution on different rings on falling curb line, i.e. a ring group station and b ring group station
On ground base station cross-cutting distribution go up along the railway, that is, Region control unit passes through two loop networks and two
Base station on ring is communicated, and the base station cross-distribution on different rings goes up along the railway.
Region control unit in s101, land mobile communication system obtains and is in the ground base station that Region control unit is communicated
The train mark of each train being covered；
Two loop networks associated by a Region control unit, and set based on certain distance on two loop networks
The base station put, it can realize the covering of some distance, and it is permissible for the base station range associated by this Region control unit
Support the data communication of several trains.Constantly realizing in data procedures it is necessary first to obtain the train of each train to train
Mark, these trains be designated in communication network be each train maker identifier, to distinguish different running trains.
S102, identify time slot corresponding in tdma frame in for each train mark；
During continuous transmission data, Region control unit is based on tdma agreement and sends data flow to each base station, in row
When parking stall is run in the network that Region control unit is covered, it is based on tdma frame in time and distributes a time slot for train, with this
As the data transmission channel between train and land mobile communication system, in addition an also reserved time slot is conventional data information to time slot,
These conventional datas include: the code error rate of wireless channel estimation of running train, diagnostic message transmission, broadcast singal etc..
In specific implementation process, this time slot corresponding to tdma frame in includes: bit synchronization guidance code, frame swynchronization code, link
Information, train address and status information, fortune control data, internet data, protection time slot etc..
S103, to each train mark in tdma frame in corresponding to time slot write each train communication data；
Because different time-gap corresponds to different trains, in data transmission procedure, need by means of with respect to time slot
To transmit corresponding data, such as time slot 1 distributes in order to transmission data for train 1, and time slot 2 distributes in order to transmission data for train 2
Etc..
S104, the ground base station transmission transmission data being communicated to Region control unit based on tdma agreement；
After subpackage on completing time slot data, transmission pipeline such as optical fiber etc. can be based on, using tdma agreement to
Each ground base station sends data, and these ground base stations are located on bicyclic communication network respectively.
The train mark of the train that s105, ground base station acquisition are currently covered, and current institute is obtained based on train mark
The time slot data corresponding to train mark covering；
In running, ground base station can get and be in the train related information that this base station covers communication, including row
Logo is known, and it can be parsed based on the corresponding time series data of train mark, in order to be sent to the train of corresponding communication.
S106, the ground base station mode based on millimetre-wave attenuator sends corresponding time slot data to the train being covered.
Specifically, Fig. 3 shows the tdma frame structure schematic diagram in the embodiment of the present invention, in land mobile communication system, region
Control unit, vehicular control unit and fixed base stations optical fiber ring network all run tdma agreement.Region control unit can manage simultaneously
Many running trains.
Time slot 1～15 distributes to the time slot that high ferro runs vehicle, the code error rate of wireless channel of time slot 16 running train estimates,
Diagnostic message transmission, broadcast singal etc. are applied, and such as only one car runs in this Region control unit, then time slot 1～15 is complete
Distribute to this operation vehicle, during if any multi-train movement, then each time slot is dynamically assigned to respectively according to the size of every train traffic
Car, therefore each Region control unit can could support up 15 running trains.
Wherein the 15th time slot has the function of poll, under special circumstances, if this Region control unit domestic demand enters
The high ferro train operating mode of more than 15, then time slot 15 unlatching poll, 14 time slots above are distributed to 14 cars, can be transmitted
Operation information and Internet data, and ensure that the train entering thereafter this region can keep logical with central control and scheduling system simultaneously
Letter, land mobile communication system only transmits fortune control related data.
Accordingly, Fig. 4 shows the tdma slotted frame structure schematic diagram in the embodiment of the present invention, and each tdma time slot frame is pressed
Different purposes are designed, and specifically include that
Bit synchronization guidance code: the system uses self-synchronizing method it may be assumed that transmitting terminal clock presses nominal frequency operation, receiving terminal profit
Extract synchronizing signal with the specific coding (as Manchester's code) including synchronizing signal from signal itself and lock oneself
Clock pulse frequency, reaches purpose that is synchronous and reading data.
Frame swynchronization code: realize byte of sync.
Link information: for controlling link and reflection Link State during tdma signal transmission.
Train address, state: reflection train different conditions (operation, stopping, bicycle parking).Different conditions, it is effective accordingly
Data processing also differs.
Fortune control data: run control time, when this time slot is first time slot distributing to this vehicle, data is herein
The operation control data of this car.Data is closed in internet data herein to distribute to other time slots of this car.
Internet data: passenger's internet information.
Protection time slot: in order to prevent frame collision it is necessary to time slot is protected in setting.Protection time slot is longer, and the probability of frame collision is got over
Little, but baud rate can be higher.
If effective tdma transfer rate of external interface is 40.96mbps, if synchronous and control code 300 code elements of introducing,
Other codings introduce 10% code element, and tdma circuit baud rate have to be larger than 40.96mbps, is taken as 51.2mbps here, then protects
Shield time slot is about:
2×10-3-(300+40.96×106×2×10-3×1.1)/(51.2×106)=40us.
Accordingly, Fig. 5 also show the system based on train data in frame structure transmission region in the embodiment of the present invention
Structural representation, comprising:
Region control unit, is in, for obtaining, each row that the ground base station that described Region control unit communicated is covered
The train mark of car；Identify time slot corresponding in tdma frame in for each train mark；Identify in tdma frame in institute to each train
Corresponding time slot writes each train communication data；Sent to the ground base station that Region control unit is communicated based on tdma agreement and pass
Transmission of data；
Ground base station, the train for obtaining the train currently being covered identifies, and obtains current institute based on train mark
The time slot data corresponding to train mark covering；And the mode based on millimetre-wave attenuator is right to the train transmission institute being covered
The time slot data answered.
Tdma frame includes multiple time slots, and each of multiple time slots time slot can distribute and is in described Region control unit institute
The different trains that the ground base station of communication is covered, one of multiple time slots time slot is conventional data information.
Specifically, this conventional data information includes: the code error rate of wireless channel of running train is estimated, diagnostic message is transmitted,
Broadcast singal.
Specifically, this time slot corresponding to tdma frame in includes: bit synchronization guidance code, frame swynchronization code, link information, train
Address and status information, fortune control data, internet data, protection time slot.
Specifically, this tdma frame period is 32ms, and each time is 2ms.
In being embodied as, Region control unit has a ring and b ring communication network, each a looped network network diagram is connected with several
A ring group station, each b loop network is connected with several b ring group stations, operates under the communication network that Region control unit is covered
The train data that train exists can be string or multiple row, is controlled than operating in Region control unit if any 4 row bullet trains
During the network's coverage area of system, Region control unit is that 4 row bullet trains distribute 4 time slots, and the corresponding string of each time slot is at a high speed
Train, in continuous transmitting procedure, based on the time slot write data corresponding to train, then passes through a ring communication network and b ring leads to
Communication network is transferred to the ground base station on each automatic network, after these ground base stations receive information, is only coated with train operation area
The ground base station in domain and bullet train are in communication, and the base station that these are coated with train operation can get train phase in time
Close data message, include the train that whole system distributes for bullet train and identify etc., it only needs to distribute for this train
Corresponding time slot data is transferred to train, during if there are multiple train, sends multiple train data accordingly to train.
To sum up, in conjunction with the bicyclic communication network architecture in car ground Data-Link overall plan, the slot transmission based on tdma agreement
The data of different trains, it is possible to achieve the communication of the multiple trains under the network that this Region control unit is covered.Realizing
During tip transition, can be using corresponding identification of base stations mode, to transmit corresponding data message, thus having ensured total number arriving and dividing
According to transmission it is achieved that the data communication in different lines workshop.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment is can
Completed with the hardware instructing correlation by program, this program can be stored in a computer-readable recording medium, storage
Medium may include that read only memory (rom, read only memory), random access memory (ram, random
Access memory), disk or CD etc..
In addition, the above method based on train data in frame structure transmission region that the embodiment of the present invention is provided and be
System is described in detail, and specific case used herein is set forth to the principle of the present invention and embodiment, above
The explanation of embodiment is only intended to help and understands the method for the present invention and its core concept；General skill simultaneously for this area
Art personnel, according to the thought of the present invention, all will change in specific embodiments and applications, in sum, this
Description should not be construed as limitation of the present invention.
Claims (10)
1. in a kind of transmission region based on frame structure the method for train data it is characterised in that comprising the steps:
Region control unit in land mobile communication system obtains and is in the ground base station that described Region control unit communicated and is covered
The train mark of each train of lid；
Identify time slot corresponding in tdma frame in for each train mark；
To each train mark in tdma frame in corresponding to time slot write each train communication data；
Transmission data is sent to the ground base station that Region control unit is communicated based on tdma agreement；
The train mark of the train that ground base station acquisition is currently covered, and the train currently being covered is obtained based on train mark
The corresponding time slot data of mark；
The mode based on millimetre-wave attenuator for the described ground base station sends corresponding time slot data to the train being covered.
2. the method based on train data in frame structure transmission region as claimed in claim 1 is it is characterised in that described tdma
Frame includes multiple time slots, and each of multiple time slots time slot can distribute and is in the ground base that described Region control unit is communicated
Stand covered different trains, one of multiple time slots time slot is conventional data information.
3. the method based on train data in frame structure transmission region as claimed in claim 2 is it is characterised in that described general
Data message includes: the code error rate of wireless channel of running train is estimated, diagnostic message is transmitted, broadcast singal.
4. the method based on train data in frame structure transmission region as claimed in claim 1 is it is characterised in that described tdma
Time slot corresponding to frame in includes: bit synchronization guidance code, frame swynchronization code, link information, train address and status information, fortune control number
According to, internet data, protection time slot.
5. the method based on train data in frame structure transmission region as described in any one of Claims 1-4, its feature exists
In the described tdma frame period is 32ms, and each time is 2ms.
6. in a kind of transmission region based on frame structure train data system it is characterised in that include:
Region control unit, is in, for obtaining, each train that the ground base station that described Region control unit communicated is covered
Train identifies；Identify time slot corresponding in tdma frame in for each train mark；Identify corresponding to tdma frame in each train
Time slot write each train communication data；Transmission number is sent to the ground base station that Region control unit is communicated based on tdma agreement
According to；
Ground base station, the train for obtaining the train currently being covered identifies, and is currently covered based on train mark acquisition
The corresponding time slot data of train mark；And the mode based on millimetre-wave attenuator send to the train that covered corresponding
Time slot data.
7. the system based on train data in frame structure transmission region as claimed in claim 6 is it is characterised in that tdma frame bag
Include multiple time slots, each of multiple time slots time slot can distribute and is in the ground base station institute that described Region control unit is communicated
The different trains covering, one of multiple time slots time slot is conventional data information.
8. the system based on train data in frame structure transmission region as claimed in claim 7 is it is characterised in that described general
Data message includes: the code error rate of wireless channel of running train is estimated, diagnostic message is transmitted, broadcast singal.
9. the system based on train data in frame structure transmission region as claimed in claim 6 is it is characterised in that described tdma
Time slot corresponding to frame in includes: bit synchronization guidance code, frame swynchronization code, link information, train address and status information, fortune control number
According to, internet data, protection time slot.
10. the system based on train data in frame structure transmission region as described in any one of claim 6 to 9, its feature exists
In the described tdma frame period is 32ms, and each time is 2ms.
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| 张仿琪: "毫米波无线通信系统在高速磁浮交通中的应用", 《中国优秀硕士学位论文全文库》 * |
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| CN107027173A (en) * | 2017-04-27 | 2017-08-08 | 杭州阿启视科技有限公司 | A kind of extensive partition positioning method transmitted for data |
| CN107027173B (en) * | 2017-04-27 | 2019-11-19 | 杭州阿启视科技有限公司 | A kind of extensive partition positioning method for data transmission |
| CN108183738A (en) * | 2017-12-28 | 2018-06-19 | 中国电子科技集团公司第五十四研究所 | Terahertz communication space division and time-division mixing multi-address method based on communication satellite |
| CN108183738B (en) * | 2017-12-28 | 2020-05-08 | 中国电子科技集团公司第五十四研究所 | Terahertz communication space division and time division hybrid multiple access method based on active antenna array |
| CN111836233A (en) * | 2019-04-17 | 2020-10-27 | 中车大连电力牵引研发中心有限公司 | Data transmission method, communication device, and storage medium |
| CN111836233B (en) * | 2019-04-17 | 2022-04-19 | 中车大连电力牵引研发中心有限公司 | Data transmission method, communication device, and storage medium |
| CN113711509A (en) * | 2019-06-14 | 2021-11-26 | 住友电气工业株式会社 | In-vehicle communication system, optical coupler, and in-vehicle device |
| CN113711509B (en) * | 2019-06-14 | 2023-12-08 | 住友电气工业株式会社 | In-vehicle communication system, optical coupler, and in-vehicle device |
| CN112073541A (en) * | 2020-11-11 | 2020-12-11 | 卡斯柯信号(北京)有限公司 | Method and system for storing key data confidence of safety critical equipment |
| CN112073541B (en) * | 2020-11-11 | 2021-02-26 | 卡斯柯信号(北京)有限公司 | Method and system for storing key data confidence of safety critical equipment |
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