CN105915269B - A kind of microwave switch type of high ferro broadband private network high dynamic LTE switch technologies has more enters antenna system more - Google Patents
A kind of microwave switch type of high ferro broadband private network high dynamic LTE switch technologies has more enters antenna system more Download PDFInfo
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- CN105915269B CN105915269B CN201610186314.4A CN201610186314A CN105915269B CN 105915269 B CN105915269 B CN 105915269B CN 201610186314 A CN201610186314 A CN 201610186314A CN 105915269 B CN105915269 B CN 105915269B
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- 230000010287 polarization Effects 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 6
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- 230000033228 biological regulation Effects 0.000 claims description 2
- 238000004891 communication Methods 0.000 abstract description 22
- 230000033001 locomotion Effects 0.000 abstract description 4
- 230000004888 barrier function Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 28
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
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- 229910052742 iron Inorganic materials 0.000 description 4
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/32—Adaptation for use in or on road or rail vehicles
- H01Q1/3208—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used
- H01Q1/3216—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used where the road or rail vehicle is only used as transportation means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
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- Computer Networks & Wireless Communication (AREA)
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Abstract
It is had more the invention discloses a kind of microwave switch type of high ferro broadband private network high dynamic LTE switch technologies and enters antenna system more, including high ferro private network antenna for base station subsystem and high ferro car antenna subsystem, it is characterised in that：High ferro private network antenna for base station subsystem includes steel tower, radio frequency/intermediate frequency modular converter (RICM), high-gain aerial, omnidirectional antenna and base station baseband (BBM)；High ferro car antenna subsystem includes radio frequency/intermediate frequency modular converter (RICM), high-gain aerial, omnidirectional antenna, microwave switch and servo control unit.The microwave switch type of the high ferro broadband private network high dynamic LTE converters of the present invention has more enters antenna system more, suitable for high ferro communicate, overcome high ferro private network communication face car antenna under the conditions of 350 500km/h high-speed motions high dynamic, non-linear acquisition and tracking antenna for base station technical barrier.
Description
Technical field
The invention belongs to the high ferro communications field more particularly to a kind of high-gain aerial systems of high ferro private network high dynamic LTE.
Background technology
High ferro refers to China Railway High-speed, and the usual speed of service is in more than 250km/h.China has reached closely in the high ferro of operation
20000 kilometers, tens of from now on will also put into commercial operation building high ferro, the development of high ferro technology, including mechanism, driving, control
The international rank of advanced units has been stepped into the fields of grade, and high ferro engineering is just in toward Asia, African, European and North America.High ferro has become me
One important business card of state's reform and opening-up achievement.But high ferro communication is still in the state extremely fallen behind, current ground leads to
Conveniently section needs each operator (movement, unicom etc.) to establish a communication base station, base station spacing every 1-2km along high ferro
Smaller, base station coverage area switching is frequent, in high ferro driving process, it may appear that call has some setbacks, and call drop can not surf the Internet etc. and ask
Topic can not provide passenger's 2G/3G Telecommunications Services of satisfaction, and to multimedia, INTERNET networks are completely without service ability.It is advanced
High ferro mechanization and the contradiction of high ferro informationization fallen behind, become the technical bottleneck that further develops of restriction high ferro.It is basic
The reason is that traditional ground communication base station covering radius is small, high-speed mobile causes serious Doppler frequency shift and the frequent of cell to be cut
It changes, also up to 30dB high ferros train penetration loss, causes current communication network that can not meet current high ferro communicating requirement.
Invention content
The purpose of the present invention is to provide one kind to be suitable for high ferro broadband private network high dynamic LTE switch technologies (High
Dynamic Transformer LTE, HIDI-LTE) microwave switch type have more enter antenna system (Microwave
Switch MIMO, MS-MIMO), base station covering radius can be greatly improved, reduce the cell switching frequency, high ferro is avoided to arrange
Vehicle penetration loss, system solve the technical issues of current high ferro communication faces, and realize the LTE broadband connections of high ferro.For in realization
Purpose is stated, the present invention uses following technical scheme：
A kind of microwave switch type of high ferro broadband private network high dynamic LTE converters has more enters antenna system more, including：Including
High ferro private network antenna for base station subsystem and high ferro car antenna subsystem, it is characterised in that：High ferro private network antenna for base station subsystem
Including steel tower, radio frequency/intermediate frequency modular converter (RICM), high-gain aerial, omnidirectional antenna and base station baseband (BBM)；High ferro is vehicle-mounted
Antenna subsystem includes radio frequency/intermediate frequency modular converter (RICM), high-gain aerial, omnidirectional antenna, microwave switch and SERVO CONTROL
Unit.
Wherein, the high ferro private network antenna for base station subsystem is multiple, wherein adjacent two high ferros private network antenna for base station subsystem
The distance between system is 12km to 40km, private network base station towers a height of 6m to 30m.
Wherein, radio frequency/intermediate frequency modular converter (RICM) described in high ferro private network antenna for base station subsystem including upconverter,
Low-converter, upconverter are by baseband intermediate frequency signal frequency conversion to high ferro private network frequency, and low-converter is by high ferro private network frequency
It is converted to baseband intermediate frequency.
Wherein, radio frequency/intermediate frequency modular converter (RICM) described in high ferro private network antenna for base station subsystem connects with base band (BBM)
It connects.
Wherein, high-gain aerial described in high ferro private network antenna for base station subsystem is quadrature linear polarization, and maximum gain is
20dB, wave beam are sector, and wherein azimuth direction is broad beam, and pitch orientation is narrow beam), high-gain aerial form can be
Incision paraboloid, array antenna etc.；The omnidirectional antenna is quadrature linear polarization, and maximum gain is about 8dB, and antenna form can be
Dipole antenna, paster antenna etc..
Wherein, radio frequency/intermediate frequency modular converter (RICM) described in high ferro car antenna subsystem includes upconverter, lower change
Frequency device, upconverter are by baseband intermediate frequency signal frequency conversion to high ferro private network frequency, and low-converter is by high ferro private network frequency
To baseband intermediate frequency
Wherein, radio frequency/intermediate frequency modular converter (RICM) described in high ferro car antenna subsystem is connect with base band (BBM).
Wherein, the high-gain aerial described in high ferro car antenna subsystem be quadrature linear polarization, maximum gain 15dB,
Wave beam is sector, and high-gain aerial form can be short backfire antenna, array antenna etc.；Omnidirectional antenna maximum gain is about 4dB,
Antenna form can be dipole antenna, paster antenna, helical antenna etc..
Wherein, the high ferro car antenna subsystem has low profile structure, and outside is covered with streamline antenna protective cover.
Technical scheme of the present invention has the following advantages：
The microwave switch type of the high ferro broadband private network high dynamic LTE converters of the present invention has more enters antenna system more, is applicable in
It communicates in high ferro, overcomes the technical barrier that current high ferro communication faces, has the following advantages：
The present invention, which makes between communication base station that distance increases to longest by current 1-2km, to be 20km, greatly reduce into
This, reduces the switching frequency between base station；
Vehicle-mounted antenna system of the present invention is placed on car body top, avoids current ground communication 30dB compartments penetration loss,
Enhance signal strength；
The present invention replaces servo-drive system using microwave switch, overcomes high ferro private network communication and faces car antenna in 350-
The technical barrier of high dynamic under the conditions of 500km/h high-speed motions, non-linear acquisition and tracking antenna for base station；
The microwave switch type of the high ferro broadband private network high dynamic LTE converters of the present invention has more enters antenna system and tradition more
LTE technologies it is completely compatible, while be also applied for similar high dynamic bearer communication, it is versatile.
Description of the drawings
Fig. 1 is the operating diagram of inventive antenna system；
Fig. 2 is the high ferro private network antenna for base station subsystem schematic diagram of inventive antenna system；
Fig. 3 is that the high ferro private network base station high-gain aerial of inventive antenna system emulates directional diagram, wherein (a) is pitching side
To directional diagram, (b) be azimuth direction directional diagram；
Fig. 4 is that the high ferro private network base station omnidirectional antenna of inventive antenna system emulates direction schematic diagram, wherein (a) is pitching
The directional diagram in direction, (b) are the directional diagram of azimuth direction；
Fig. 5 is the high ferro vehicle-mounted antenna system schematic diagram of inventive antenna system；
Fig. 6 is that the vehicle-mounted high-gain aerial of high ferro of inventive antenna system emulates directional diagram, wherein (a) is pitch orientation
Directional diagram, (b) are the directional diagram of azimuth direction；
Fig. 7 is that the vehicle-mounted omnidirectional antenna of high ferro of inventive antenna system emulates directional diagram, wherein (a) is the side of pitch orientation
Xiang Tu, (b) are the directional diagram of azimuth direction；
Fig. 8 is the high ferro vehicle-mounted antenna system protective cover of inventive antenna system.
Specific embodiment
The present invention is described further below in conjunction with the accompanying drawings.
As shown in Figure 1, the microwave switch type of the high ferro broadband private network high dynamic LTE switch technologies of the present invention has more enters day more
Linear system is united, including high ferro private network antenna for base station subsystem 1 and high ferro car antenna subsystem 2, wherein high ferro private network antenna for base station
Subsystem includes steel tower, radio frequency/intermediate frequency modular converter (RICM), high-gain aerial (BANT1, BANT3), omnidirectional antenna
(BANT2) and base station baseband (BBM)；High ferro car antenna subsystem includes radio frequency/intermediate frequency modular converter (RICM), high-gain day
Line (TANT1, TANT3), omnidirectional antenna (TANT2), microwave switch and servo control unit.
High ferro private network antenna for base station subsystem is multiple, and Fig. 1 is one of private network antenna for base station subsystem, steel tower height
It is D with railway vertical range for H, under conditions of H is 6-30m, the spacing of adjacent two base station (is one up to 12-40km
Private network base station covering railway length is L), SL1, SL2, D, SL22, SL12 are distance of the high ferro train to private network base station.Work as high ferro
Train enters in SL1 and SL2 angular ranges, and high ferro train-installed antenna TANT1 and private network antenna for base station BANT1 establish communication chain
Road；High ferro train enters in SL21 and SL22 angular ranges, high ferro train-installed antenna TANT2 and private network antenna for base station BANT2
Establish communication link；High ferro train enters in SL22 and SL12 angular ranges, the train-installed antenna TANT3 of high ferro and private network base station
Antenna BANT3 establishes communication link.
Base station may build the left side of railway in, it is also possible to build the right side of railway in.It is covered when high ferro train is driven out to a base station
Cover region, into next base station overlay area, car antenna TANT1 can be directed toward next base station in advance.During turning, SERVO CONTROL list
Member adjusts car antenna according to high ferro train position and direction of advance and is directed toward in real time, ensures the continuous of communication link.
Fig. 2 is the high ferro private network antenna for base station subsystem schematic diagram for giving invention antenna system, wherein, radio frequency/intermediate frequency
Modular converter (RICM) includes upconverter, low-converter and base station baseband, and upconverter is by baseband intermediate frequency signal frequency conversion
To private network frequency, such as 3.5GHz；Low-converter is by private network frequency to baseband intermediate frequency frequency.
High ferro private network antenna for base station is made of two secondary high-gain aerials and a secondary omnidirectional antenna, and 3 slave antennas are according to certain angle
Degree installation.As shown in figure 3, emulating directional diagram for private network base station high-gain aerial, antenna form is array antenna, cross line pole
Change, wherein (a) is pitch orientation directional diagram, (b) is azimuth direction directional diagram.As shown in figure 4, it is imitated for private network base station omnidirectional antenna
True direction figure, antenna form are cross-dipole, wherein (a) is pitch orientation directional diagram, (b) is azimuth direction directional diagram.Two
Panel height gain antenna and a secondary omnidirectional antenna are mounted at the top of steel tower, angle of declination 5., three width antenna combination equivalent directions figures are
Horse-saddle.
Fig. 5 gives the high ferro vehicle-mounted antenna system schematic diagram of inventive antenna system, wherein, radio frequency/intermediate frequency modulus of conversion
Block (RICM) includes upconverter, low-converter, is connect with vehicle-mounted base band (BBM).Upconverter is to believe vehicle-mounted baseband intermediate frequency
High ferro private network frequency, such as 3.5GHz number are converted to, low-converter is by high ferro private network frequency to vehicle-mounted baseband intermediate frequency frequency
Rate.With reference to Fig. 1, in high ferro private network antenna for base station coverage area, high ferro train is SL1 apart from private network base station maximum distance, most
It is closely D, high-gain aerial working region is SL2 with omnidirectional antenna working region line of demarcation.When high ferro row reach SL1 extremely
In SL2 angular ranges, vehicle-mounted high-gain aerial and the high-gain aerial of private network base station establish communication link；When high ferro row to SL2
To D angular ranges, microwave switch be used for switching high ferro car antenna work schedule and the vehicle-mounted omnidirectional antenna of switching with specially
Net base station omnidirectional antenna establishes communication link.
High ferro car antenna is made of two secondary high-gain aerials and a secondary omnidirectional antenna, and 3 slave antennas are separately separately installed,
In two secondary high-gains equipped with servo control unit, can realize orientation, pitch regulation.The order of work of three slave antennas is by GNSS
(Global Satellite Navigation System) controls microwave switch ON/OFF to realize with electronic map.It is as shown in fig. 6, vehicle-mounted for high ferro
High-gain aerial emulates directional diagram, which is asymmetric short backfire antenna, cross polarization, wherein (a) is pitch orientation
Directional diagram, (b) be azimuth direction directional diagram；As shown in fig. 7, emulate directional diagram, the antenna for the vehicle-mounted omnidirectional antenna of high ferro
Directional diagram is horse-saddle, and azimuth direction rotational symmetry, pitch orientation maximum gain direction base station does not need to be equipped with servo tracking
Unit.Wherein (a) is the directional diagram of pitch orientation, and (b) is the directional diagram of azimuth direction.
It is vertical with track by the height and base station that adjust private network base station in railroad curve and the place of breaks
Distance, it is ensured that antenna for base station is connect in a manner of LOS always with car antenna, and azimuth, the elevation angle of high ferro car antenna are kept not
Become.In high ferro train travelling process, car antenna is directed toward private network antenna for base station always, and servo control unit is by controlling microwave
The ON/OFF of switch keeps car antenna work schedule.When high ferro private network base station build railway both sides in, in order to realize base
That stands is switched fast, and vehicle-mounted high-gain aerial TANT1 can be directed toward next private network base station by servo control unit in advance.
When train passes through tunnel, the height of entrance and exit eNode base station of the vehicle-mounted omnidirectional antenna of high ferro with building tunnel in
Gain antenna establishes communication link, and high-gain aerial antenna height is about the height of tunnel face.
As shown in figure 8, the high ferro car antenna subsystem of the present invention has low profile structure, its purpose is to reduce
Windage caused by train high-speed cruising, while car antenna subsystem external is covered with the stream under suitable high ferro high dynamic motion conditions
Linear antenna protective cover.
Involved high-gain aerial is quadrature linear polarization in the present invention, and maximum gain 20dB, wave beam is fan-shaped, shape
Formula can be short backfire antenna, array antenna etc.；Omnidirectional antenna maximum gain be 8dB, antenna form can be dipole antenna,
Paster antenna, helical antenna etc..
Following embodiment be the vertical range D of traditional base station transmission power and base station and railway all with high ferro private network base station
It is carried out in the case of difference that is identical and considering the two antenna gain.
Embodiment 1
It is had more using the microwave switch type of the high ferro broadband private network high dynamic LTE switch technologies of the invention described above and enters antenna more
System, private network base station iron tower height H are 8m, are 200m apart from railway vertical range D；High ferro private network antenna for base station subsystem and height
The maximum gain of high-gain aerial in iron car antenna subsystem is respectively 20dB and 15dB, omnidirectional antenna maximum maximum gain
Respectively 8dB and 4dB.Compared with traditional communication means, base station range 20km improves 10 times of left sides than traditional base station
It is right；Signal strength improves 30-45dB.
Embodiment 2
It is had more using the microwave switch type of the high ferro broadband private network high dynamic LTE switch technologies of the invention described above and enters antenna more
System, private network base station iron tower height H are 15m, are 200m apart from railway vertical range D；High ferro private network antenna for base station subsystem and
The maximum gain of high-gain aerial in high ferro car antenna subsystem is respectively 20dB and 15dB, and omnidirectional antenna maximum most increases
Benefit is respectively 8dB and 4dB.Compared with traditional communication means, base station range 28km improves 14 times of left sides than traditional base station
It is right；Signal strength improves 30-45dB.
Embodiment 3
It is had more using the microwave switch type of the high ferro broadband private network high dynamic LTE switch technologies of the invention described above and enters antenna more
System, private network base station iron tower height H are 30m, are 200m apart from railway vertical range D；High ferro private network antenna for base station subsystem and
The maximum gain of high-gain aerial in high ferro car antenna subsystem is respectively 20dB and 15dB, and omnidirectional antenna maximum most increases
Benefit is respectively 8dB and 4dB.Compared with traditional communication means, base station range 40km improves 20 times of left sides than traditional base station
It is right；Signal strength improves 30-45dB.
The foregoing is merely the embodiment of the present invention, are not intended to limit the scope of the invention, every to utilize this hair
The equivalent structure or equivalent flow shift that bright description is made directly or indirectly is used in other relevant technology necks
Domain is included within the scope of the present invention.
Claims (7)
1. a kind of microwave switch type of high ferro broadband private network high dynamic LTE switch technologies has more enters antenna system more, including high ferro
Private network antenna for base station subsystem and high ferro car antenna subsystem, it is characterised in that：High ferro private network antenna for base station subsystem includes
Steel tower, radio frequency/intermediate frequency modular converter (RICM), high-gain aerial, omnidirectional antenna and base station baseband (BBM)；High ferro car antenna
Subsystem includes radio frequency/intermediate frequency modular converter (RICM), high-gain aerial, omnidirectional antenna, microwave switch, vehicle-mounted base band (BBM)
And servo control unit；
Radio frequency/intermediate frequency modular converter (RICM) includes upconverter, low-converter described in high ferro private network antenna for base station subsystem,
Upconverter is by baseband intermediate frequency signal frequency conversion to high ferro private network frequency, and low-converter is by high ferro private network frequency to base band
Intermediate frequency；
Radio frequency/intermediate frequency modular converter (RICM) described in high ferro car antenna subsystem includes upconverter, low-converter, upper change
Frequency device is by baseband intermediate frequency signal frequency conversion to high ferro private network frequency, and low-converter is will be in high ferro private network frequency to base band
Frequently；
High-gain aerial in high ferro private network base station sub-system is two pairs, omnidirectional antenna is one secondary, two secondary high-gain aerials and one
Secondary omnidirectional antenna is mounted at the top of steel tower, and three width antenna combination equivalent directions figures are horse-saddle；High ferro car antenna subsystem
In high-gain aerial be two secondary, omnidirectional antenna be a pair, three slave antennas separate it is separately installed, wherein two secondary high-gain aerials are matched
There is servo control unit, can realize orientation, pitch regulation, the order of work of three slave antennas is by Global Satellite Navigation System
(GNSS) microwave switch ON/OFF is controlled to realize with electronic map.
2. the microwave switch type of private network high dynamic LTE switch technologies in high ferro broadband according to claim 1 has more enters day more
Linear system is united, which is characterized in that the high ferro private network antenna for base station subsystem is multiple, wherein adjacent two high ferros private network antenna for base station
The distance between subsystem is 12km to 40km, private network base station towers a height of 6m to 30m.
3. the microwave switch type of private network high dynamic LTE switch technologies in high ferro broadband according to claim 1 has more enters day more
Linear system is united, which is characterized in that radio frequency/intermediate frequency modular converter (RICM) and base band described in high ferro private network antenna for base station subsystem
(BBM) it connects.
4. the microwave switch type of private network high dynamic LTE switch technologies in high ferro broadband according to claim 1 has more enters day more
Linear system unite, which is characterized in that high-gain aerial described in high ferro private network antenna for base station subsystem be quadrature linear polarization, maximum gain
For 20dB, wave beam is sector, and wherein azimuth direction is broad beam, and pitch orientation is narrow beam, and high-gain aerial form can be
Incision paraboloid, array antenna；The omnidirectional antenna is quadrature linear polarization, and maximum gain is about 8dB, and antenna form can be even
Pole sub-antenna, paster antenna.
5. the microwave switch type of private network high dynamic LTE switch technologies in high ferro broadband according to claim 1 has more enters day more
Linear system is united, which is characterized in that radio frequency/intermediate frequency modular converter (RICM) described in high ferro car antenna subsystem and base band (BBM)
Connection.
6. the microwave switch type of private network high dynamic LTE switch technologies in high ferro broadband according to claim 1 has more enters day more
Linear system is united, which is characterized in that the high-gain aerial described in high ferro car antenna subsystem is quadrature linear polarization, and maximum gain is
15dB, wave beam are sector, and high-gain aerial form can be short backfire antenna, array antenna；Omnidirectional antenna maximum gain is about
4dB, antenna form can be dipole antenna, paster antenna, helical antenna.
7. the microwave switch type of private network high dynamic LTE switch technologies in high ferro broadband according to claim 1 has more enters day more
Linear system is united, which is characterized in that the high ferro car antenna subsystem has low profile structure, and outside is covered with streamline antenna guarantor
Shield.
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| CN201610186314.4A CN105915269B (en) | 2016-03-30 | 2016-03-30 | A kind of microwave switch type of high ferro broadband private network high dynamic LTE switch technologies has more enters antenna system more |
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| CN201610186314.4A CN105915269B (en) | 2016-03-30 | 2016-03-30 | A kind of microwave switch type of high ferro broadband private network high dynamic LTE switch technologies has more enters antenna system more |
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Families Citing this family (6)
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| CN106411804A (en) * | 2016-10-28 | 2017-02-15 | 邵思平 | High-speed railway communication system |
| CN106656337B (en) * | 2017-01-16 | 2019-05-17 | 深圳联想懂的通信有限公司 | High-speed railway communication system |
| CN110061341A (en) * | 2018-01-19 | 2019-07-26 | 中国联合网络通信集团有限公司 | A kind of railway covering method, broad beam high-gain aerial and multiband common antenna |
| CN109548035B (en) * | 2019-01-11 | 2022-03-18 | 中国联合网络通信集团有限公司 | Base station planning method and device |
| CN109548034B (en) * | 2019-01-11 | 2021-09-28 | 中国联合网络通信集团有限公司 | Method and device for deploying base station for high-speed rail |
| CN112954588B (en) * | 2021-02-05 | 2022-11-04 | 陕西天基通信科技有限责任公司 | Method and system for realizing gain control of high-speed rail micro-distribution equipment according to GPS/BD positioning |
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| CN104409858A (en) * | 2014-11-27 | 2015-03-11 | 中国船舶重工集团公司第七二四研究所 | Coaxial crossed vibrator array communication antenna and design method thereof |
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