CN106455075A - Communication method and system during train crossing - Google Patents
Communication method and system during train crossing Download PDFInfo
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- CN106455075A CN106455075A CN201610799998.5A CN201610799998A CN106455075A CN 106455075 A CN106455075 A CN 106455075A CN 201610799998 A CN201610799998 A CN 201610799998A CN 106455075 A CN106455075 A CN 106455075A
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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
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
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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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Abstract
The embodiment of the invention discloses a communication method and system during train crossing. The method comprises the following steps of: on the basis of a GPS (Global Positioning System) network, obtaining the position information of each crossing train; on the basis of the position information of each crossing train, obtaining the position information of each base station under a double-loop communication network; when a communication condition under crossing is met, in a communication process, writing the data information of each crossing train to the base station which meets a crossing condition by a regional control unit in the double-loop communication network; and analyzing the data information of each crossing train in a TDMA (Time Division Multiple Address) protocol by the base station, and sending communication data to each crossing train on the basis of a way of millimeter wave communication. When the embodiment of the invention is implemented, on the basis of a time slot frame in the TDMA, a corresponding time slot frame is distributed to each train under crossing, the corresponding data information is written on the basis of the time slot frame, a data communication process in the train crossing process is realized, and the use ratio of the time slot frame is improved.
Description
Technical field
The present invention relates to communication technical field, the method and system of communication in more particularly, to a kind of train meeting.
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 system 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, security 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.
GSM-R system substantially can meet the big function of railway transportation information service ten：Locomotive synchronous operation control system
Information transfer, the information transfer of train control system, dispatching communication, wireless running number information, the transmission of CTC traffic order,
Train tail wind pressure information transmission, locomotive comprehensive monitoring information transmission (bow condition, operating mode, axle temperature etc.), passenger vehicle run safety monitoring
System (TCDS) information transmission, the information transmission of passenger's mobile information service system, large-scale marshalling yard/station comprehensive mobile information
The information transmission of service system, interval mobile communication and public affair mobile communication.
Existing Railroad Communication System (GSM-R) adopts GSM network, because Traffic Channel (tdma slot) is more than or equal to 4,
The demand that channel is redistributed will not occur, hence without special processing procedure, and due to Traffic Channel not because of meeting
It is to be allocated according to number of users, utilization ratio is not high.
Content of the invention
It is an object of the invention to overcoming the deficiencies in the prior art, the invention provides the side communicating in a kind of train meeting
Method and system are for the communication means of the train meeting under double loop network pattern, corresponding by distributing on different time slot frames
The data message of train is transmitted, and increases the utilization ratio of tdma slot.
In order to solve the above problems, the method that the present invention proposes communication in a kind of train meeting, comprise the steps：
Obtain the positional information of each meeting train based on GPS network network；
Positional information based on each meeting train obtains the positional information of each base station under bicyclic communication network；
Based on the positional information of each base station judge meeting train whether be in meeting under the conditions of communication；
During communication condition under meeting meeting, during communication, in bicyclic communication network Region control unit to
The base station meeting meeting condition writes the data message of each meeting train, and described data message is based on TDMA agreement and writes, passes through
The data message of each meeting train of TDMA upper different time-gap frame write institute, each time slot frame write in described different time-gap frame is respectively
The data message of the corresponding train in meeting train；
Base station parses the data message of each meeting train in TDMA agreement, and the mode based on millimetre-wave attenuator is to each meeting
Train sends communication data.
Described based on GPS network network obtain each meeting train positional information include：
When the Region control unit in bicyclic communication network detects closely base station and has multiple trains to be in communication, sentence
Break the relative motion state of multiple trains, if detect each train and will enter meeting, triggering GPS module obtain each can car team
The positional information of car.
Also include during described communication condition under meeting meeting：
Open the related base station of participant spoke part, millimeter wave is carried out with each meeting train based on the related base station of meeting condition
Communication.
The described base station opening participant spoke part correlation, carries out milli based on the related base station of meeting condition and each meeting train
Metric wave communication includes：
Switched bicyclic in the protection time slot of TDMA by the base station control passage of optical networking by Region control unit simultaneously
The related base station of participant spoke part in communication network.
Also include after methods described：
Obtain the positional information of each meeting train based on GPS network network；
Judge that the positional information of each meeting train obtains the positional information of each base station under bicyclic communication network；
Judge whether meeting train has completed Vehicle during Crossing Event based on the positional information of each base station；
After judging meeting train and completing Vehicle during Crossing Event, open the base station communication mode associated by each train, and
The data message of the covered train in write base station.
Accordingly, present invention also offers in a kind of train meeting communication system, including：
GPS module, for obtaining the positional information of each meeting train based on GPS network network；
Architecture module, obtains the position of each base station under bicyclic communication network for the positional information based on each meeting train
Confidence ceases；
Based on the positional information of each base station, meeting identification module, under the conditions of judging whether meeting train is in meeting
Communication；
Region control module, for when meeting the communication condition under meeting, during communication, can spoke to meeting
The base station of part writes the data message of each meeting train, and described data message is based on TDMA agreement and writes, by different on TDMA
The data message of each meeting train of time slot frame write institute, in each time slot frame each meeting train of write in described different time-gap frame
Corresponding train data message；
Base station communication module, parses the data message of each meeting train in TDMA agreement for base station, and is based on millimeter wave
The mode of communication sends communication data to each meeting train.
Described Region control module is additionally operable to detect closely base station when having multiple trains to be in communication, judges multiple row
The relative motion state of car, if detect each train and will enter meeting, triggering GPS module obtains the position of each meeting train
Information.
Described Region control module is additionally operable to open the related base station of participant spoke part.
Described Region control module passes through base station control passage switching pair simultaneously in the protection time slot of TDMA of optical networking
The related base station of participant spoke part in ring communication network.
Described GPS module is additionally operable to obtain the positional information of each meeting train based on GPS network network；
Described architecture module is additionally operable to judge that the positional information of each meeting train obtains each base under bicyclic communication network
The positional information stood；
Whether described meeting identification module is additionally operable to judge the meeting of completing of meeting train based on the positional information of each base station
Car process；
Described Region control module is additionally operable to, after judging meeting train and completing Vehicle during Crossing Event, open each train institute
The base station communication mode of association, and write the data message of the covered train in base station.
In embodiments of the present invention, get the positional information of related train in real time by GPS location, then with corresponding base station
Position is mated, and the identification that can complete whole train meeting workshop judges, thus facilitating train in Vehicle during Crossing Event, is based on
Time slot frame in TDMA is that each train in meeting distributes corresponding time slot frame, then based on the corresponding data letter of time slot frame write
Breath, then the base station under meeting scene mode is sent to based on TDMA protocol mode, base station sends the data to respective train again
On communicator, it is achieved thereby that the data communication process in train Vehicle during Crossing Event, improve the utilization rate of time slot frame.
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 that the land mobile communication system in the embodiment of the present invention can Chinese herbaceous peony application scenarios schematic diagram；
Fig. 2 is application scenarios schematic diagram during the land mobile communication system non-meeting in the embodiment of the present invention；
Fig. 3 is application scenarios schematic diagram during the land mobile communication system meeting in the embodiment of the present invention；
Fig. 4 is application scenarios schematic diagram after land mobile communication system meeting in the embodiment of the present invention；
Fig. 5 is the method flow diagram of communication in train meeting in the embodiment of the present invention；
Fig. 6 is the tdma frame structural representation in the embodiment of the present invention；
Fig. 7 is the tdma slot frame structure schematic diagram in the embodiment of the present invention；
Fig. 8 is the system structure diagram of communication in train meeting 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.
Fig. 1 shows the Railway Mobile Radio system structure diagram in the embodiment of the present invention, and this meeting is high ferro multiple line
The important process state of double train operations.When train 1 runs from left to right, when train 2 runs from right to left, Vehicle during Crossing Event can be retouched
State as follows.Before meeting, train 1 is communicated with A ring group station An and B ring group station Bn, and train 2 is led to A ring group station An+1 and B ring group station Bn
Letter.
The instruction that A ring group station and B ring group station send according to the Region control unit transmitting in optical fiber ring network, will belong to
The data of different high ferro trains sends.As：The data of train 1 is transmitted into train 1 in the time slot distributing to train 1 by An base station
Vehicle-mounted front-end；The data of train 1 is transmitted into the vehicle-mounted front-end of train 1 by the time slot distributing train 1 by Bn base station, simultaneously in distribution
The data of train 2 is transmitted into the vehicle-mounted front-end of train 2 to the time slot of train 2；An+1 base station will in the time slot distributing to train 2
The data of train 2 is launched to the vehicle-mounted front-end of train 2.
Train 1 and train 2 are launched according to the time slot that TDMA distributes, and the data of vehicular control unit is being distributed to this
Launch in the time slot of car to ground base station, the data receiving is sent into Region control unit by optical fiber ring network by ground base station.By
In employing TDMA agreement, when having many cars in Region control unit, time slot shared by each car is different, equally can realize train
Meeting.
Run as a example (two-orbit) situation by double cars, now base station switching is to determine train place base station according to location information
The area of coverage, switches A ring and B by Region control unit by the base station control passage of optical networking in the protection time slot of TDMA simultaneously
Ring ground base station.Because base station switch is to complete in the protection time slot of TDMA, so for each train, train-ground communication
System can guarantee that each tdma frame data is safe and complete.
When the Bn base station overlay area of the An base station in A ring for the train 1 and B ring, the B1 base of the A1 base station in A ring for the train 2 and B ring
Stand the area of coverage.In the tdma communication time slot of train 1, Region control unit will open the An base station of A ring and the Bn base station of B ring,
As shown in Figure 2.In the tdma communication time slot of train 2, Region control unit will open the A1 base station of A ring and the B1 base station of B ring.
Meeting is the important process link of the double train operation of two-orbit, and for Region control unit, meeting situation is only
It is a special operation condition of the biserial car in its management region.When train 1 runs from left to right, train 2 runs from right to left, meeting
Car process can be described as follows.
In the communication time slot of train 1 and train 2 before meeting, base station transceiver state is as shown in Figure 2.Train 1 and A before meeting
Ring group station An and B ring group station Bn communication, train 2 is communicated with A ring group station An+1 and B ring group station Bn.
During meeting, the base station transceiver state of train 1 and train 2 communication is as shown in Figure 3.Train 1 and A ring group station An+ during meeting
1 and B ring group station Bn communication, train 2 communicates with A ring group station An+1 and B ring group station Bn.Now two cars take different time slots.
As shown in Figure 4 with the base station transceiver state of train 1 and the communication of train 2 after meeting.Train 1 and A ring group after meeting
An+1 and B ring group of standing station Bn+1 communicates, and train 2 is communicated with A ring group station An and B ring group station Bn.
Based on Fig. 1 to 4 shown in land mobile communication system meeting scene mode, the present invention implement in involved train meeting
The method of middle communication includes：Obtain the positional information of each meeting train based on GPS network network；Positional information based on each meeting train
Obtain the positional information of each base station under bicyclic communication network；Judge whether meeting train is in based on the positional information of each base station
Communication under the conditions of meeting；During communication condition under meeting meeting, during communication, region control in bicyclic communication network
Unit processed writes the data message of each meeting train to the base station meeting meeting condition, and described data message is write based on TDMA agreement
Enter, by TDMA different time-gap frame write each meeting train data message, each time slot in described different time-gap frame
Frame writes the data message of the corresponding train in each meeting train；Base station parses the data letter of each meeting train in TDMA agreement
Breath, and the mode based on millimetre-wave attenuator sends communication data to each meeting train.
Specifically, Fig. 5 shows the method flow diagram of communication in the train meeting in the embodiment of the present invention, including as follows：
Start；
S501, detect whether closely base station has multiple trains to be in communication, be in communication if there are multiple trains, then
Enter S502, otherwise terminate；
Because in bicyclic communication network, Region control unit and each train carry out communication process in real time, it can detect
Each base station relative position information, and detect the spatial relation between each train, it closely meets condition in base station
Can be several base stations span, threshold value between 3 to 6 base stations can be set.
S502, judge the relative motion state of multiple trains, if judge that train enters meeting pattern, enter
S503, otherwise terminates；
In-plant train relation can be dorsad and row or in the same direction and capable do not produce meeting pattern, another also may be used
To be meeting (include collision or catch up with and surpass meeting during pattern), and meeting is the communication party needing in present invention enforcement to consider
Formula.
S503, triggering GPS module obtain the positional information of each meeting train；
In bicyclic communication network, Region control unit can trigger GPS and instruct, train location information from each train, from
And obtain the positional information of meeting train.
S504, the positional information based on each meeting train obtain the positional information of each base station under bicyclic communication network；
After positioning, get the positional information of meeting each base station interregional by position, such that it is able to which is learnt
Base station will communications status under chance meeting state.
S505, judged based on the positional information of each base station meeting train whether be in meeting under the conditions of communication, full
When under the conditions of sufficient meeting, then enter S506, otherwise continue deterministic process S505；
The switch control rule of base station controlled Region control unit in bicyclic communication network between due to train, it can be in communication
During, each train meeting state of quick anticipation, it passes through to control the communication between train and base station, can go out base station and row with anticipation
The unlatching relation in workshop, when biserial car conditional communication will be opened in base station, then the communication pattern of meeting train starts.
In S506, bicyclic communication network, Region control unit writes the number of each meeting train to the base station meeting meeting condition
It is believed that breath；
During communication condition under meeting meeting, during communication, in bicyclic communication network Region control unit to
The base station meeting meeting condition writes the data message of each meeting train, and this data message is based on TDMA agreement and writes, passes through
The data message of each meeting train of TDMA upper different time-gap frame write institute, each time slot frame each meeting of write in this different time-gap frame
The data message of the corresponding train in car team car.
In specific implementation process, in bicyclic communication network, Region control unit opens the related base station of participant spoke part, base
Carry out millimetre-wave attenuator in the related base station of meeting condition with each meeting train.Specifically optical fiber can be passed through by Region control unit
The base station control passage of net switches the related base station of participant spoke part in bicyclic communication network in the protection time slot of TDMA simultaneously.
Specifically, Fig. 6 shows the tdma frame structural representation 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. 7 shows the tdma slot frame structure schematic diagram in the embodiment of the present invention, and each tdma slot frame is pressed
Different purposes are designed, main inclusion：
Bit synchronization guidance code：The system uses self-synchronizing method, that is,：Transmitting terminal clock is pressed nominal frequency and is run, 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：Control link and reflection Link State for tdma signal when transmitting.
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
Protecting time slot is about:
2×10-3-(300+40.96×106×2×10-3×1.1)/(51.2×106)=40us.
S507, base station parse TDMA agreement in each meeting train data message, and the mode based on millimetre-wave attenuator to
Each meeting train sends communication data.
Terminate.
In specific implementation process, meeting is an of short duration process, and it can also be based further on GPS network network and obtain each meeting
The positional information of car team car；Judge that the positional information of each meeting train obtains the positional information of each base station under bicyclic communication network；
Judge whether meeting train has completed Vehicle during Crossing Event based on the positional information of each base station；Judging meeting train and the meeting of completing
After car process, open the base station communication mode associated by each train, and write the data message of the covered train in base station.Sentencing
Break after completing meeting pattern, Region control unit to complete with reference to normal land mobile communication system communication pattern.
In specific implementation process, in the train meeting that Fig. 8 shows in the embodiment of the present invention, the system architecture of communication is illustrated
Figure, this system includes：
GPS module, for obtaining the positional information of each meeting train based on GPS network network；
Architecture module, obtains the position of each base station under bicyclic communication network for the positional information based on each meeting train
Confidence ceases；
Based on the positional information of each base station, meeting identification module, under the conditions of judging whether meeting train is in meeting
Communication；
Region control module, for when meeting the communication condition under meeting, during communication, can spoke to meeting
The base station of part writes the data message of each meeting train, and described data message is based on TDMA agreement and writes, by different on TDMA
The data message of each meeting train of time slot frame write institute, in each time slot frame each meeting train of write in described different time-gap frame
Corresponding train data message；
Base station communication module, parses the data message of each meeting train in TDMA agreement for base station, and is based on millimeter wave
The mode of communication sends communication data to each meeting train.
In specific implementation process, this Region control module is additionally operable to detect closely base station has multiple trains to be in communication
When, judge the relative motion state of multiple trains, if detect each train and will enter meeting, triggering GPS module obtains each
The positional information of meeting train.
In specific implementation process, this Region control module is additionally operable to open the related base station of participant spoke part.
In specific implementation process, this Region control module passes through the protection time slot in TDMA for the base station control passage of optical networking
Inside switch the related base station of participant spoke part in bicyclic communication network simultaneously.
In specific implementation process, this GPS module is additionally operable to obtain the positional information of each meeting train based on GPS network network；Should
Architecture module is additionally operable to judge that the positional information of each meeting train obtains the positional information of each base station under bicyclic communication network；
This meeting identification module is additionally operable to judge whether meeting train has completed Vehicle during Crossing Event based on the positional information of each base station；This area
Domain control module is additionally operable to, after judging meeting train and completing Vehicle during Crossing Event, open the base station communication associated by each train
Pattern, and write the data message of the covered train in base station.
Each functional module in this system can be realized based on Region control unit and base station, and it can be independent mould
Block or combine in Region control unit, modules realize process flow can be refering to the phase in method and step in Fig. 5
Close content.
It should be noted that the bicyclic communication network in the embodiment of the present invention, each communication network have therewith associated
Base station, this two communication networks are all simultaneously located on Along Railway, and road is being fallen in the base station cross-cutting distribution on different rings
On along the line, that is, a Region control unit is communicated with the base station on two rings by two loop networks, on different rings
Base station cross-distribution goes up along the railway.
To sum up, get the positional information of related train by GPS location in real time, then carry out with corresponding base station position
Join, the identification that can complete whole train meeting workshop judges, thus facilitating train in Vehicle during Crossing Event, based on the time slot in TDMA
Frame is that each train in meeting distributes corresponding time slot frame, then based on the corresponding data message of time slot frame write, then be based on
TDMA protocol mode is sent to the base station under meeting scene mode, and base station sends the data to respective train communication device again
On, it is achieved thereby that the data communication process in train Vehicle during Crossing Event, improve the utilization rate of time slot frame.
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 can include：Read-only storage (ROM, Read Only Memory), random access memory (RAM, Random
Access Memory), disk or CD etc..
In addition, the method and system of communication have carried out detailed Jie in the above train meeting that the embodiment of the present invention is provided
Continue, specific case used herein is set forth to the principle of the present invention and embodiment, the explanation of above example is only
It is to be used to help understand the method for the present invention and its core concept；Simultaneously for one of ordinary skill in the art, according to this
Bright thought, all will change in specific embodiments and applications, and in sum, this specification content should not be managed
Solve as limitation of the present invention.
Claims (10)
1. a kind of method communicating in train meeting is it is characterised in that comprise the steps：
Obtain the positional information of each meeting train based on GPS network network；
Positional information based on each meeting train obtains the positional information of each base station under bicyclic communication network；
Based on the positional information of each base station judge meeting train whether be in meeting under the conditions of communication；
During communication condition under meeting meeting, during communication, in bicyclic communication network, Region control unit is to satisfaction
The base station of meeting condition writes the data message of each meeting train, and described data message is based on TDMA agreement and writes, by TDMA
The data message of each meeting train of upper different time-gap frame write institute, each time slot frame each meeting of write in described different time-gap frame
The data message of the corresponding train in train；
Base station parses the data message of each meeting train in TDMA agreement, and the mode based on millimetre-wave attenuator is to each meeting train
Send communication data.
2. the method communicating in train meeting as claimed in claim 1 is it is characterised in that described obtained respectively based on GPS network network
The positional information of meeting train includes：
When the Region control unit in bicyclic communication network detects closely base station and has multiple trains to be in communication, judge many
The relative motion state of individual train, if detect each train and will enter meeting, triggering GPS module obtains each meeting train
Positional information.
3. in train meeting as claimed in claim 1 the method for communication it is characterised in that described communication under meeting meeting
Also include during condition：
Open the related base station of participant spoke part, millimeter wave is carried out based on the related base station of meeting condition and each meeting train and leads to
Letter.
4. the method communicating in train meeting as claimed in claim 3 is it is characterised in that described unlatching participant spoke part is related
Base station, millimetre-wave attenuator is carried out with each meeting train based on the related base station of meeting condition and includes：
Bicyclic communication is switched by the base station control passage of optical networking in the protection time slot of TDMA by Region control unit simultaneously
The related base station of participant spoke part in network.
5. in the train meeting as described in any one of Claims 1-4 the method for communication it is characterised in that after methods described
Also include：
Obtain the positional information of each meeting train based on GPS network network；
Judge that the positional information of each meeting train obtains the positional information of each base station under bicyclic communication network；
Judge whether meeting train has completed Vehicle during Crossing Event based on the positional information of each base station；
After judging meeting train and completing Vehicle during Crossing Event, open the base station communication mode associated by each train, and write
The data message of the covered train in base station.
6. the system communicating in a kind of train meeting is it is characterised in that include：
GPS module, for obtaining the positional information of each meeting train based on GPS network network；
Architecture module, obtains the position letter of each base station under bicyclic communication network for the positional information based on each meeting train
Breath；
Meeting identification module is logical under the conditions of meeting for judging whether meeting train is in based on the positional information of each base station
Letter；
Region control module, for when meeting the communication condition under meeting, during communication, to meeting meeting condition
Base station writes the data message of each meeting train, and described data message is based on TDMA agreement and writes, by different time-gap on TDMA
The data message of each meeting train of frame write institute, the institute in each time slot frame each meeting train of write in described different time-gap frame
The data message of corresponding train；
Base station communication module, parses the data message of each meeting train in TDMA agreement for base station, and is based on millimetre-wave attenuator
Mode to each meeting train send communication data.
7. the system communicating in train meeting as claimed in claim 6 is it is characterised in that described Region control module is additionally operable to
When detecting closely base station and having multiple trains to be in communication, judge the relative motion state of multiple trains, if detecting each row
When car will enter meeting, triggering GPS module obtains the positional information of each meeting train.
8. the system communicating in train meeting as claimed in claim 6 is it is characterised in that described Region control module is additionally operable to
Open the related base station of participant spoke part.
9. the system communicating in train meeting as claimed in claim 8 is it is characterised in that described Region control module passes through light
The base station control passage of fibre web switches the related base of participant spoke part in bicyclic communication network in the protection time slot of TDMA simultaneously
Stand.
10. in the train meeting as described in any one of claim 6 to 9 system of communication it is characterised in that described GPS module
It is additionally operable to obtain the positional information of each meeting train based on GPS network network；
Described architecture module is additionally operable to judge that the positional information of each meeting train obtains each base station under bicyclic communication network
Positional information；
Described meeting identification module is additionally operable to judge whether meeting train has completed meeting mistake based on the positional information of each base station
Journey；
Described Region control module is additionally operable to, after judging meeting train and completing Vehicle during Crossing Event, open associated by each train
Base station communication mode, and write the data message of the covered train in base station.
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