CN103686986B - A kind of global position system GPS signal retransmission unit and method - Google Patents
A kind of global position system GPS signal retransmission unit and method Download PDFInfo
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- CN103686986B CN103686986B CN201210362364.5A CN201210362364A CN103686986B CN 103686986 B CN103686986 B CN 103686986B CN 201210362364 A CN201210362364 A CN 201210362364A CN 103686986 B CN103686986 B CN 103686986B
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Abstract
The invention discloses a kind of global position system GPS signal retransmission unit and method, the GPS receiving antenna being arranged on outside signal coupling apparatus receives gps signal, and the gps signal is sent to is arranged on transmitting antenna in the signal coupling apparatus；The transmitting antenna launches gps signal in signal coupled room；The reception antenna being arranged in signal coupling apparatus receives gps signal, and gps signal is forwarded into base station；The clock signal in gps signal is extracted in base station, enters row clock synchronous.The gps signal retransmission unit and method of the present invention, by being forwarded to gps signal, realization is shared to gps signal, has saved cost, has reduced the difficulty of engineering construction, has improved the stability and security of operation.
Description
Technical field
The present invention relates to base station clock simultaneous techniques field, more particularly to a kind of global position system GPS signal forwarding dress
Put and method.
Background technology
Mobile communications network, such as CDMA（Code-Division Multiple Access：CDMA）Network, be
One needs the synchronous network of height clock, it is necessary to is synchronized using accurate clock signal, just can ensure that cdma system
The normal work of the code division multiple access systems such as necessary short code, long code, WALSHCODE (Walsh code), completes the initiation of calling, seeks
The operation flow such as exhale, switch.
At present, cdma system is generally by exchange network, radio base station controller BSC, wireless base station BTS, antenna transmission system
Composition., wherein it is desired to the wireless base station of precise synchronization, using GPS（Global Position System：Global positioning system
System）Mode obtains clock, and often covering wireless base station needs the gps system using complete set, can not share each other.At present,
Indoor distributed system being widely applied and applying in network, causes the BBU as wireless base station network element（Building Base
band Unite：Indoor baseband processing unit）Equipment is largely laid in the important office points such as module office, branch office, core office, not only greatly
The materials such as amount consumption antenna feeder, and roof, hoistway, the offline hole of office point are occupied by substantial amounts of GPS and antenna feeder, shadow
Rung the later stage dilatation and office point it is attractive in appearance；Part website, due to increasing for feeder line, also have impact on owner, the pass of nearby residents
System, causes unnecessary fear and to the worry of radiation.
The content of the invention
In view of this, the invention solves the problems that a technical problem be to provide a kind of forwarding of global position system GPS signal
Device, by being forwarded to gps signal, realization is shared to gps signal.
A kind of global position system GPS signal retransmission unit, including：Signal coupling apparatus, it is arranged on signal coupling
GPS receiving antenna outside device, the transmitting antenna and reception antenna being arranged in the signal coupling apparatus；The signal coupling
Device is closed screening arrangement；The GPS receiving antenna is used to receive gps signal, and the gps signal is sent to described
Transmitting antenna；Wherein, each GPS receiving antenna is connected with a transmitting antenna；The GPS receiving antenna and the hair
The number for penetrating antenna is all one or more；The transmitting antenna is used to launch the gps signal in signal coupled room；Institute
Stating reception antenna is used to receive the gps signal in signal coupled room, and the gps signal is forwarded into base station；Institute
The clock signal in the base station extraction gps signal is stated, enters row clock synchronous；The number of the reception antenna be 2 or 2 with
On.
According to one embodiment of the gps signal retransmission unit of the present invention, further, lightning protection unit, for filtering out
State the surge current of the gps signal of GPS receiving antenna reception.
According to the present invention gps signal retransmission unit one embodiment, further, in addition to：Receive retransmission unit,
For receiving the gps signal from lightning protection unit, the gps signal is subjected to low pass and amplifies laggard line enhanced processing, and
Gps signal after processing is sent to the transmitting antenna.
According to one embodiment of the gps signal retransmission unit of the present invention, further, the transmitting antenna and described connect
It is all physical isolation to receive antenna.
According to one embodiment of the gps signal retransmission unit of the present invention, further, each reception antenna with
The BBU equipment of one base station is connected, and the gps signal received is sent to what is be connected with this reception antenna by the reception antenna
BBU equipment；The BBU equipment extracts the clock signal in the gps signal, enters row clock synchronous.
According to one embodiment of the gps signal retransmission unit of the present invention, further, the GPS receiving antenna and hair
The number of radio line is all 2, and the number of the reception antenna is 10.
The invention solves the problems that a technical problem be to provide a kind of global position system GPS signal retransmission method, pass through
Gps signal is forwarded, realization is shared to gps signal.
A kind of global position system GPS signal retransmission method, including：It is arranged on the GPS receiver day outside signal coupling apparatus
Line receives gps signal, and the gps signal is sent to is arranged on transmitting antenna in the signal coupling apparatus；Wherein, it is described
Signal coupling apparatus is closed screening arrangement；Each GPS receiving antenna is connected with a transmitting antenna；The GPS
The number of reception antenna and the transmitting antenna is one or more；The transmitting antenna is launched described in signal coupled room
Gps signal；The reception antenna being arranged in the signal coupling apparatus receives the gps signal, and the gps signal is turned
It is dealt into base station；The clock signal in the gps signal is extracted in the base station, enters row clock synchronous；Wherein, the reception antenna
Number is 2 or more than 2.
According to one embodiment of the gps signal retransmission method of the present invention, further, lightning protection unit filters out the GPS
The surge current for the gps signal that reception antenna is received.
According to one embodiment of the gps signal retransmission method of the present invention, further, retransmission unit is received from lightning protection list
Member receives the gps signal, and the gps signal is carried out to be sent into line enhanced processing after low pass amplification, and by after processing
Gps signal is sent to the transmitting antenna.
According to one embodiment of the gps signal retransmission method of the present invention, further, the transmitting electric wire and described connect
It is all physical isolation to receive antenna.
According to one embodiment of the gps signal retransmission method of the present invention, further, each reception electric wire with
The BBU equipment of one base station is connected, and the gps signal received is sent to what is be connected with this reception antenna by the reception antenna
BBU equipment；The BBU equipment extracts the clock signal in the gps signal, enters row clock synchronous.
According to one embodiment of the gps signal retransmission method of the present invention, further, the GPS receiving antenna and hair
The number of radio line is all 2, and the number of the reception antenna is 10.
The gps signal retransmission unit and method of the present invention, by being forwarded to gps signal, realization is total to gps signal
Enjoy, saved cost, reduce the difficulty of engineering construction, improve the stability and security of operation.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only
Some embodiments of the present invention, for those of ordinary skill in the art, without having to pay creative labor, also
Other accompanying drawings can be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of one embodiment of the gps signal retransmission unit according to the present invention；
Fig. 2 is the schematic diagram of one embodiment of the gps signal retransmission unit for being arranged on base station according to the present invention；
Fig. 3 shows for the structure of the reception retransmission unit in one embodiment of the gps signal retransmission unit according to the present invention
It is intended to;
Fig. 4 is the flow chart of one embodiment of the gps signal retransmission method according to the present invention.
Embodiment
The present invention is described more fully with reference to the accompanying drawings, wherein illustrating the exemplary embodiment of the present invention.Under
The accompanying drawing that face will be combined in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, and shows
So, described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on the reality in the present invention
Example is applied, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made all belongs to
In the scope of protection of the invention.Many descriptions are carried out to technical scheme with reference to each figure and embodiment.
Split-second precision benchmark has become the base in the fields such as communication, electric power, radio and television, safety monitoring, Industry Control
Plinth ensures one of platform.GPS can provide high accuracy, round-the-clock, round-the-clock navigation, positioning and time service service, and time service performance is excellent
It is different.The equipment such as communication, electric power, radio and television, safety monitoring, Industry Control can obtain standard clock signal from gps satellite
Information.
Fig. 1 is the schematic diagram of one embodiment of the gps signal retransmission unit according to the present invention.As illustrated, the whole world is fixed
Position system gps signal retransmission unit includes：Signal coupling apparatus 15, the GPS receiving antenna being arranged on outside signal coupling apparatus
111st, 112 the transmitting antenna 121,122 and reception antenna 131,132,133,134,135, being arranged in signal coupling apparatus.Hair
Gps signal can be launched by penetrating antenna, and reception antenna can receive gps signal." GPS receiving antenna " and " reception antenna " herein
The reception antenna of different parts is arranged on for distinguishing, can be a kind of antenna.
Signal coupling apparatus 15 is closed screening arrangement, with signal coupled room.GPS receiving antenna 111,112 connects
Gps signal is received, and sends gps signal to transmitting antenna 121,122；Each GPS receiving antenna 111,112 and a transmitting
Antenna 121,122 is connected；GPS receiving antenna 111,112 and the number of transmitting antenna 121,122 are all one or more.According to one
Individual embodiment, GPS receiving antenna 111,112 is by the aerial clock signal in day, i.e. 1575 ± 5MHz of frequency range, and polarization mode is right
The GPS standard signal of hand circular polarization is received.
Transmitting antenna 121,122 launches gps signal in signal coupled room.Reception antenna 131,132,133,134,
135 are used to receive gps signal in signal coupled room, and by gps signal be forwarded to base station 141,142,143,144,
145.What is be connected with reception antenna can be each part or device for needing to obtain gps signal lock in time on base station.
The clock signal in gps signal is extracted in base station 141,142,143,144,145, enters row clock synchronous；The number of reception antenna is 2
It is individual or more than 2.
According to one embodiment of present invention, lightning protection unit 161,162 filters out the gps signal of GPS receiving antenna reception
Surge current.Lightning current is a kind of surge current electricity, and circuit is being struck by lightning and in on-off inductive load or bulk loads
Very high switching overvoltage, this instantaneous overvoltage can usually be produced（Or overcurrent）Referred to as surge voltage（Or surge current）,
It is a kind of transition interference.
Receive retransmission unit 171,172 and receive gps signal from lightning protection unit, gps signal is carried out to carry out after low pass amplification
Linear Amplifer processing, and the gps signal after processing is sent to transmitting antenna 121,122.Transmitting antenna and reception antenna are all
Physical isolation.According to one embodiment, lightning protection unit and reception retransmission unit and GPS receiving antenna are one-to-one corresponding.GPS receiver
Antenna 111,112 respectively through 2 sets of identical lightning protection unit 161,162 be connected to 2 sets of identicals receive retransmission units 171,
172。
According to one embodiment of present invention, each reception antenna is connected with the BBU equipment of a base station, receives day
The gps signal received is sent to the BBU equipment being connected with this reception antenna by line；BBU equipment extracts the clock in gps signal
Signal, enters row clock synchronous.GPS receiving antenna and the number of transmitting antenna are 2, and the number of reception antenna is 10.According to
The number of one embodiment, GPS receiving antenna and transmitting antenna, and the number of reception antenna are set according to actual requirement of engineering
Put, to ensure that all reception antennas can smoothly receive the gps signal of transmitting antenna transmission.
The gps signal retransmission unit of the present invention, realizes that multiple devices share gps antenna by the way that gps signal is shared, reduces same
Location gps antenna quantity, solves construction difficult problem, simplifies dilatation step.Aerial synchronizing signal can be received by gps antenna, for example
Inputted using 2 sets of identical gps antennas, then this 2 sets of signals can simultaneously work or each work independently, and be provided for downstream component
Stable gps signal input.
Treated gps signal is wirelessly forwarded by emitter in signal coupled room.Signal is coupled
Space is the good space of a shielding properties, in this shielding space, by multiple reception antennas（GPS receiving antenna）To GPS
Signal carries out Space Coupling, is finally received by multiple reception antennas in the same space, completes what is received and forward and share
Whole process.Each reception antenna is respectively by the signal output of acquisition to outside, so that distinct device is used, and completes many complete equipments
Gps signal is shared.
During reception and forwarding, transmitting antenna and reception antenna are physically-isolated, so, to reception antenna
Quantity is not limited, as long as the position license placed, the quantity of reception antenna in theory can be with unrestricted.And due to space
Isolation, lightning protection effect is highly significant.Thunderbolt or surge current induced-current can not isolate incoming rear class by space.Separately
Outside, significant indicator lamp is designed with above shell, the working condition directly perceived for indicating system.
In existing technology, gps clock distribution often is carried out using 2 kinds of modes, one kind is internal clocking distribution method, this
Kind of mode is that gps signal is received by digital receiver and demodulates, obtain the clock signal of base band after computing, and by base band
Clock signal deliver to digital circuit distributor, internal system carry out clock distribution, to reach that multiple host shares gps clock
Purpose.Such as MOTOROLA manufacturers designed such system, if GPS or gps antenna go wrong, caused whole
Problem occurs for the clock of body.Another way is direct-connected distribution method, and GPS is directly allocated by straight-through threeway, will be straight
Current feed and signal transmission carry out direct-coupling simultaneously, transmit to gps antenna.
Advantage using first way is that reliability is high, and allocative efficiency is high, has the disadvantage that undue rely on connects with single GPS
Receipts machine, the dependence to hardware vendors is very big, if producer does not design at the beginning of development system, just can not carry out GPS using this method
Distribution, applicable surface is narrow.Advantage using second method is exactly simple, has the disadvantage that system design is excessively simple, and many line feeds are returned
Road is led directly to without isolation, antenna feeder loop, causes to produce influence mutually, is broken down if receiving loop all the way, is directly resulted in whole system
That unites does not work, based on above characteristic, and current direct distribution method can be only applied to the occasion of 2 road GPS distribution.
The gps signal retransmission unit of the present invention can realize that input is isolated with output space, and effect of taking shelter from the thunder is good, and any one
The failure of individual apparatus of output terminal can only influence equipment itself, and other equipment will not be caused with interference or stop whole system
Work.GPS shares quantity greatly, is currently designed as 2 point 10, expansible leeway is big.This equipment is also to the amplification of gps signal
Significantly, in the extreme applications such as GPS antenna position is not good, excellent distribution effects can be obtained.
Fig. 2 is the schematic diagram of one embodiment of the gps signal retransmission unit for being arranged on base station according to the present invention；As schemed
Shown, the structure of relatively more common base station includes base station controller BSC（Base Station Controller）, indoor base band
Processing unit BBU, RRU（Radio Remote Unit：Remote Radio Unit）, handheld terminal MS, wherein BSC, BBU and RRU it
Between using optical fiber connection by the way of.Gps signal retransmission unit is connected with the BBU equipment of base station, and gps signal retransmission unit connects
Receive antenna and the gps signal received is sent to the BBU equipment being connected with this reception antenna, realize the shared of gps signal.BBU
Equipment extracts the clock signal in gps signal, enters row clock synchronous.
Fig. 3 shows for the structure of the reception retransmission unit in one embodiment of the gps signal retransmission unit according to the present invention
It is intended to.As illustrated, receiving retransmission unit 32 includes：Couple blocking unit 321,325, one-level amplifying unit 322, two grades of amplifications
Unit 323, output filter unit 324 and feedback control unit 326.Coupling blocking unit 321 receives GPS receiving antenna 31 and received
GPS wire sizes, and separate direct current, gps signal passes through one-level amplifying unit 322, and two grades of amplifying units 323, output filtering are single
Member 324, feedback control unit 326, the processing of coupling blocking unit 325, transmitting antenna is sent to by treated gps signal
33.According to one embodiment, one-level amplifying unit 322 is low-pass amplifier, and two grades of amplifying units 323 are linear amplifier.It is logical
Cross the amplification to gps signal so that in the extreme applications such as GPS antenna position is not good, can obtain excellent reception and point
With effect.
Fig. 4 is the flow chart of one embodiment of the gps signal retransmission method according to the present invention.As shown in the figure：
Step 402, the GPS receiving antenna being arranged on outside signal coupling apparatus receives gps signal, and gps signal is transmitted
To being arranged on transmitting antenna in signal coupling apparatus；
Wherein, signal coupling apparatus is closed screening arrangement；Each GPS receiving antenna connects with a transmitting antenna
Connect；GPS receiving antenna and the number of transmitting antenna are one or more；
Step 403, transmitting antenna launches gps signal in signal coupled room；
Step 404, the reception antenna being arranged in signal coupling apparatus receives gps signal, and gps signal is forwarded to
Base station；The clock signal in gps signal is extracted in base station, enters row clock synchronous；Wherein, the number of reception antenna be 2 or 2 with
On.
According to one embodiment of present invention, lightning protection unit filters out the surge electricity of the gps signal of GPS receiving antenna reception
Stream.Receive retransmission unit and receive gps signal from lightning protection unit, gps signal is carried out to be sent at row Linear Amplifer after low pass amplification
Reason, and the gps signal after processing is sent to transmitting antenna.Each reception antenna is connected with the BBU equipment of a base station,
The gps signal received is sent to the BBU equipment being connected with this reception antenna by reception antenna；BBU equipment is extracted in gps signal
Clock signal, enter row clock synchronous.
The gps signal retransmission unit and method of the present invention is by actual Project Realization, and performance is stable, and receipts star is good, road
Survey and test calls be normal, reached design objective requirement, realized multiple equipment and gps signal is shared, saved cost,
Improve the stability of operation.
The method and system of the present invention may be achieved in many ways.For example, can by software, hardware, firmware or
Software, hardware, firmware any combinations come realize the present invention method and system.The said sequence of the step of for method is only
Order described in detail above is not limited in order to illustrate, the step of method of the invention, is especially said unless otherwise
It is bright.In addition, in certain embodiments, the present invention can be also embodied as recording to program in the recording medium, these programs include
Machine readable instructions for realizing the method according to the invention.Thus, the present invention also covering storage is used to perform according to this hair
The recording medium of the program of bright method.
Description of the invention is provided for the sake of example and description, and is not exhaustively or by the present invention
It is limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Select and retouch
State embodiment and be more preferably to illustrate the principle and practical application of the present invention, and one of ordinary skill in the art is managed
The solution present invention is so as to design the various embodiments with various modifications suitable for special-purpose.
Claims (12)
1. a kind of global position system GPS signal retransmission unit, it is characterised in that including：
Signal coupling apparatus, the GPS receiving antenna being arranged on outside signal coupling apparatus, it is arranged in the signal coupling apparatus
Transmitting antenna and reception antenna；
The signal coupling apparatus is electromagnetic screen, with closed signal coupled room；
The GPS receiving antenna is used to receive gps signal, and sends the gps signal to the transmitting antenna；Wherein, often
The individual GPS receiving antenna is all connected with a transmitting antenna；The GPS receiving antenna and the number of the transmitting antenna are all
One or more；
The transmitting antenna is used to launch the gps signal in signal coupled room；
The reception antenna is used to receive the gps signal in signal coupled room, and the gps signal is forwarded into base
Stand；The clock signal in the gps signal is extracted in the base station, enters row clock synchronous；
The number of the reception antenna is 2 or more than 2.
2. gps signal retransmission unit as claimed in claim 1, it is characterised in that also include：
Lightning protection unit, the surge current for filtering out the gps signal that the GPS receiving antenna is received.
3. gps signal retransmission unit as claimed in claim 2, it is characterised in that also include：
Retransmission unit is received, for receiving the gps signal from lightning protection unit, the gps signal low pass amplification is subjected to laggard
Line enhanced processing, and the gps signal after processing is sent to the transmitting antenna.
4. gps signal retransmission unit as claimed in claim 1, it is characterised in that：
The transmitting antenna and the reception antenna are all physical isolation.
5. gps signal retransmission unit as claimed in claim 1, it is characterised in that：
Each reception antenna is connected with the indoor baseband processing unit BBU equipment of a base station, the reception antenna
The gps signal received is sent to the BBU equipment being connected with this reception antenna；
The BBU equipment extracts the clock signal in the gps signal, enters row clock synchronous.
6. gps signal retransmission unit as claimed in claim 5, it is characterised in that：
The GPS receiving antenna and the number of transmitting antenna are all 2, and the number of the reception antenna is 10.
7. a kind of global position system GPS signal retransmission method, it is characterised in that including：
It is arranged on GPS receiving antenna outside signal coupling apparatus and receives gps signal, and the gps signal is sent to is arranged on
Transmitting antenna in the signal coupling apparatus；
Wherein, the signal coupling apparatus is electromagnetic screen, with closed signal coupled room；Each GPS connects
Antenna is received all to be connected with a transmitting antenna；The GPS receiving antenna and the number of the transmitting antenna are one or more；
The transmitting antenna launches the gps signal in signal coupled room；
The reception antenna being arranged in the signal coupling apparatus receives the gps signal, and the gps signal is forwarded to
Base station；The clock signal in the gps signal is extracted in the base station, enters row clock synchronous；
Wherein, the number of the reception antenna is 2 or more than 2.
8. gps signal retransmission method as claimed in claim 7, it is characterised in that：
Lightning protection unit filters out the surge current for the gps signal that the GPS receiving antenna is received.
9. gps signal retransmission method as claimed in claim 8, it is characterised in that：
Receive retransmission unit and receive the gps signal from lightning protection unit, line is sent into after the gps signal is carried out into low pass amplification
Property enhanced processing, and the gps signal after processing is sent to the transmitting antenna.
10. gps signal retransmission method as claimed in claim 7, it is characterised in that：
The transmitting antenna and the reception antenna are all physical isolation.
11. gps signal retransmission method as claimed in claim 7, it is characterised in that：
Each reception antenna is connected with the indoor baseband processing unit BBU equipment of a base station, the reception antenna
The gps signal received is sent to the BBU equipment being connected with this reception antenna；
The BBU equipment extracts the clock signal in the gps signal, enters row clock synchronous.
12. gps signal retransmission method as claimed in claim 7, it is characterised in that also include：
The GPS receiving antenna and the number of transmitting antenna are all 2, and the number of the reception antenna is 10.
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| CN201210362364.5A CN103686986B (en) | 2012-09-26 | 2012-09-26 | A kind of global position system GPS signal retransmission unit and method |
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| CN201210362364.5A CN103686986B (en) | 2012-09-26 | 2012-09-26 | A kind of global position system GPS signal retransmission unit and method |
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| CN103686986B true CN103686986B (en) | 2017-10-24 |
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| CN105353388A (en) * | 2015-11-11 | 2016-02-24 | 陕西天基通信科技有限责任公司 | Multipath output conversion system with monitoring function |
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| WO2006005228A1 (en) * | 2004-07-13 | 2006-01-19 | Utstarcom Telecom Co., Ltd. | A interfacing method between remote unit and centralized bs |
| US7920441B2 (en) * | 2006-09-21 | 2011-04-05 | Atheros Communications, Inc. | Optimized time acquisition algorithm for low-power GPS-based watch applications |
| CN102098776A (en) * | 2009-12-10 | 2011-06-15 | 中兴通讯股份有限公司 | Method and network for realizing multi-sector base transceiver station clock cascade synchronization |
| CN102547969A (en) * | 2012-02-24 | 2012-07-04 | 电子科技大学 | High-accuracy wireless clock synchronization system for power system |
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2012
- 2012-09-26 CN CN201210362364.5A patent/CN103686986B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006005228A1 (en) * | 2004-07-13 | 2006-01-19 | Utstarcom Telecom Co., Ltd. | A interfacing method between remote unit and centralized bs |
| US7920441B2 (en) * | 2006-09-21 | 2011-04-05 | Atheros Communications, Inc. | Optimized time acquisition algorithm for low-power GPS-based watch applications |
| CN102098776A (en) * | 2009-12-10 | 2011-06-15 | 中兴通讯股份有限公司 | Method and network for realizing multi-sector base transceiver station clock cascade synchronization |
| CN102547969A (en) * | 2012-02-24 | 2012-07-04 | 电子科技大学 | High-accuracy wireless clock synchronization system for power system |
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