CN209562812U - Communication system based on high speed urban rail - Google Patents
Communication system based on high speed urban rail Download PDFInfo
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- CN209562812U CN209562812U CN201920499485.1U CN201920499485U CN209562812U CN 209562812 U CN209562812 U CN 209562812U CN 201920499485 U CN201920499485 U CN 201920499485U CN 209562812 U CN209562812 U CN 209562812U
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Abstract
Based on the communication system of high speed urban rail, it is related to railway communication technology.The utility model includes following part: along the trackside wireless communication node of rail setting, each node includes at least two channels, and each channel frequency of each node is all different with each channel frequency of adjacent node；The in-vehicle wireless communications device being set on train, the in-vehicle wireless communications device includes the first in-vehicle wireless communication module, the second in-vehicle wireless communication module and control module, the control module is used for the working channel according to train position control the first in-vehicle wireless communication module and the second in-vehicle wireless communication module, the channel frequency of node where adapting it to.The utility model improves terminal switching smoothness and switching rate.
Description
Technical field
The utility model relates to railway communication technologies.
Background technique
Chinese city track transportation industry is fast-developing, has opened operation more than 5000KM route.In recent years, in
State's urbanization accelerates, and domestic urban rail industry is in airport cable release, the fast rail field of administrative region of a city, more than 120Km/h high speed urban track traffic
Route gradually increases, and has reality building route on more ground such as Beijing, Shanghai, Guangzhou, Chengdu.
Urban track traffic is divided into two classes for wireless communication between car-ground, and one kind adjusts safety-related industry for column control, column
Business, existing LTE-M technical solution (work is in 1.8GHz frequency range) have been able to solve very well.It is that PIS/CCTV is non-there are also one kind
Safety service, but higher for car-ground bandwidth demand: under common operation scene, need about 20Mbps radio interface rate；Urgent feelings
Under condition, control centre retrieves for examination all 32 road camera videos of vehicle, needs more than 40Mbps radio interface rate.More than 120Km/h
Under High-speed Circumstance, traditional Wlan train-ground communication scheme is no longer satisfied practical application request, it is necessary to use LTE technology solution
Certainly, but two practical problems to be solved:
First, LTE technology is deployed in the 5.8GHz frequency range that can apply for obtaining, relevant art is in 3Gpp R14 version mark
Defined in standard, there has been corresponding product in Huawei Tech Co., Ltd.
Second, solve the problems, such as in emergency circumstances 40Mbps radio interface rate.Traditional LTE scheme carrier wave is up to 20MHz, In
Under urban rail industry High-speed Circumstance, the radio interface rate being capable of providing is 20Mbps or so.
Utility model content
Technical problem to be solved by the utility model is to provide a kind of LTE-U train-ground communication dual carrier networking plans, full
Sufficient high speed urban rail vehicle-ground wireless communication demand.
The utility model solve the technical problem the technical solution adopted is that, based on the communication system of high speed urban rail, packet
Include following part:
Along rail setting trackside wireless communication node, each node include at least two channels, each node it is each
Channel frequency is all different with each channel frequency of adjacent node；
The in-vehicle wireless communications device being set on train, the in-vehicle wireless communications device are logical including the first onboard wireless
Believe that module, the second in-vehicle wireless communication module and control module, the control module are used to control the first vehicle according to train position
The working channel of carrier radio communication module and the second in-vehicle wireless communication module, the channel frequency of node where adapting it to.
Further, the trackside wireless communication node includes the A class node being staggered and B class stage, A class node tool
There are the first channel and second channel, the B class stage has third channel and the 4th channel；
The in-vehicle wireless communications device includes the first in-vehicle wireless communication module, the second in-vehicle wireless communication module and control
Molding block, the control module are used to control the first in-vehicle wireless communication module and the second in-vehicle wireless communication according to train position
The working channel of module makes it work in one of following modes:
A, two in-vehicle wireless communication modules work in the first channel and second channel respectively；
B, two in-vehicle wireless communication modules work in third channel and the 4th channel respectively.
The in-vehicle wireless communications device further includes emergent control module, for control the first in-vehicle wireless communication module and
Second in-vehicle wireless communication module makes any two channels all worked at the same time in place cell of the two.
The utility model has the beneficial effects that the utility model uses two sets of vehicle-mounted TAU terminals, two can be respectively connected to
The effect of dual carrier networking, the reliability and spirit of vehicle-ground wireless communication have been reached in the wireless area of different 20MHz frequency ranges in this way
Activity all has a distinct increment.Under common operation scene, the vehicle-mounted active and standby work of TAU is compared in the wireless network of two different frequency ranges
Traditional scheme (active and standby work is in a wireless network), improves the reliability of train-ground communication under common operation scene.Promptly
It runs under scene, two sets of vehicle-mounted TAU of headstock/tailstock deployment are simultaneously operable in two wireless networks, simultaneous transmission PIS/
CCTV business, the needs of meeting all 32 road cameras of vehicle under the state of emergency while being uploaded to control centre.The utility model
Also the communication in single wireless 20MHz cell is supported to reduce the interference between terminal only with a vehicle-mounted TAU terminal.This reality
5.8G frequency resource is made full use of with novel, inter-frequency networking is used between the cell of front and back, improves terminal switching smoothness and cut
Throw-over rate.
Detailed description of the invention
Fig. 1 is the trackside communication equipment schematic diagram of the utility model.
Fig. 2 is the system application example schematic diagram of the utility model.
Specific embodiment
Referring to Fig. 1~2.
The utility model provides a kind of urban track traffic vehicle-ground wireless communication system based on LTE-U technology, carrying vehicle
Carry PIS/CCTV business.Vehicle-ground wireless communication network need the region that covers mainly include all uplink and downlink sections main track, station,
Rolling stock section/parking lot.Control centre disposes wireless core network and network management etc., is connect by dedicated transmissions net with station.
1 set of LTE core network equipment is set in control centre, station switch configuration is AT STATION or section communication computer room.
LTE-U vehicle-ground wireless communication system base-station AirNode equipment is all deployed in by main track running tunnel or elevated rail,
Rolling stock section/parking lot, the secondary directional aerial of each mating installation 2 of AriNode, realizes the wireless coverage on website both sides.
The network vehicle-mounted equipment of train head/tailstock drivers' cab LTE-U by vehicle-mounted access unit TAU, it is vehicle-mounted industry with
Too network switch, antenna-feeder system etc. form.The TAU of headstock and the tailstock is worked at the same time under LTE-U vehicle-ground wireless communication network, is protected
Barrier PIS business and CCTV business are not interrupted.It is each at the top of each every end driver's cabin of train that a pair of of top antenna, reception interval are set
The wireless signal TAU of AirNode transmitting, main track and vehicle phase library inner region are all made of the receipts that top antenna carries out wireless signal
Hair.
The trackside wireless telecom equipment of the utility model is arranged along rail, including (such as the A-B-A-B-A-B that is staggered
Mode) A class cell wireless communication equipment and B class cell wireless communication equipment, A class cell wireless communication equipment have first letter
Road f1 and second channel f2, B class cell wireless communication equipment have third channel f3 and the 4th channel f4；
The in-vehicle wireless communications device being set on train, the in-vehicle wireless communications device are logical including the first onboard wireless
Believe that module, the second in-vehicle wireless communication module and control module, the control module are used to control the first vehicle according to train position
The working channel of carrier radio communication module and the second in-vehicle wireless communication module, makes it work in one of following modes:
A, two in-vehicle wireless communication modules work in the first channel and second channel respectively；
B, two in-vehicle wireless communication modules work in third channel and the 4th channel respectively.
The in-vehicle wireless communications device further includes emergent control module, for control the first in-vehicle wireless communication module and
Second in-vehicle wireless communication module makes any two channels all worked at the same time in place cell of the two.Urgent operation scene
Under, two sets of vehicle-mounted TAU of headstock/tailstock deployment are simultaneously operable in two wireless networks, simultaneous transmission PIS/CCTV business, full
All 32 road cameras of vehicle are uploaded to the demand of control centre simultaneously under the sufficient state of emergency.
Foregoing provide the embodiment that two group of frequencies are staggered, the utility model can also use three kinds or more frequencies
The embodiment of rate group, such as the mode of A-B-C-B-A.. are obvious for those of ordinary skill.The utility model
So-called " along the trackside wireless communication node of rail setting " " rail " therein not necessarily covers rising for a certain intercity route
Point arrives terminal, such as the complete line from Beijing to Shanghai, for 50 kilometers of long one section in part rail, such as Beijing-Guangzhou Railway
Rail still belongs to the utility model although its beginning and end is different from whole section of route (starting point Beijing -- terminal Guangzhou)
Interest field.
Claims (3)
1. the communication system based on high speed urban rail, which is characterized in that including following part:
Along the trackside wireless communication node of rail setting, each node includes at least two channels, each channel of each node
Frequency is all different with each channel frequency of adjacent node；
The in-vehicle wireless communications device being set on train, the in-vehicle wireless communications device include the first in-vehicle wireless communication mould
Block, the second in-vehicle wireless communication module and control module, the control module are used to control the first vehicle-mounted nothing according to train position
The working channel of line communication module and the second in-vehicle wireless communication module, the channel frequency of node where adapting it to.
2. the communication system as described in claim 1 based on high speed urban rail, which is characterized in that the trackside wireless communication node
Including the A class node being staggered and B class stage, A class node has the first channel and second channel, and the B class stage has third
Channel and the 4th channel；
The in-vehicle wireless communications device includes the first in-vehicle wireless communication module, the second in-vehicle wireless communication module and control mould
Block, the control module are used to control the first in-vehicle wireless communication module and the second in-vehicle wireless communication module according to train position
Working channel, so that it is worked in one of following modes:
A, two in-vehicle wireless communication modules work in the first channel and second channel respectively；
B, two in-vehicle wireless communication modules work in third channel and the 4th channel respectively.
3. the communication system as claimed in claim 2 based on high speed urban rail, which is characterized in that the in-vehicle wireless communications device
Further include emergent control module, for controlling the first in-vehicle wireless communication module and the second in-vehicle wireless communication module, makes the two
Any two channels all worked at the same time in place cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920499485.1U CN209562812U (en) | 2019-04-15 | 2019-04-15 | Communication system based on high speed urban rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920499485.1U CN209562812U (en) | 2019-04-15 | 2019-04-15 | Communication system based on high speed urban rail |
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| CN209562812U true CN209562812U (en) | 2019-10-29 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111836365A (en) * | 2019-04-15 | 2020-10-27 | 中铁二院工程集团有限责任公司 | Communication system based on high-speed urban rail |
| CN112383896A (en) * | 2020-05-12 | 2021-02-19 | 北京天润海图科技有限公司 | Vehicle-ground communication method and system, vehicle-mounted wireless module and road side signal subsystem thereof |
-
2019
- 2019-04-15 CN CN201920499485.1U patent/CN209562812U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111836365A (en) * | 2019-04-15 | 2020-10-27 | 中铁二院工程集团有限责任公司 | Communication system based on high-speed urban rail |
| CN112383896A (en) * | 2020-05-12 | 2021-02-19 | 北京天润海图科技有限公司 | Vehicle-ground communication method and system, vehicle-mounted wireless module and road side signal subsystem thereof |
| CN112383896B (en) * | 2020-05-12 | 2022-11-04 | 北京天润海图科技有限公司 | Vehicle-ground communication method and system, vehicle-mounted wireless module and road side signal subsystem thereof |
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