CN206196066U - Signal transmission system of remote radio head module and applied this module - Google Patents
Signal transmission system of remote radio head module and applied this module Download PDFInfo
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Abstract
This reality newly discloses a remote radio head module, its interface unit and remote radio head subelement including being used for receiving and sending baseband signal is constituteed, the remote radio head subelement is including being used for the signal processing module that is connected with the interface unit, a delay adjustment module for eliminating the delay inequality of signal, a power amplifier module for being directed at the signal enlargies, a filter module for being directed at the signal falls makes an uproar, a receive and dispatch and close the way module for being directed at the signal closes way / along separate routes, and be used for sending received signal's port. Still disclose an adoption the multiple -input -multiple -output signal transmission system that the remote radio head module has more signal transmission control down and goes upward signal transmission control more. The new multiple -input -multiple -output's of this reality signal transmission system low in cost, system stability are good, based on the multiple -input -multiple -output's of this system implementation signal transmission then the effective cover effect of booster signal.
Description
Technical field
This reality is newly related to moving communicating field, more particularly to the multi input of a kind of radio frequency remoto module and the application module is more
Output signal Transmission system.
Background technology
Mobile communication covering is divided into two kinds of outdoor cover and in-door covering, and outdoor and small-sized building cover basic by macro base station
Covering is completed, large buildings in-door covering is completed by indoor distributed system, there is also greatly in scenes such as residential quarters in recent years
The outdoor distribution covering of amount, indoor distribution covering system and outdoor distributed coverage system are referred to as distributed coverage system.
Existing passive distributed coverage system is typically completed using single radio-frequency cable and single-polarized antenna, to allow existing nothing
Source distribution system realizes MIMO (multiple-input and multiple-output) technology, typically there is two methods.One kind is increased according to MIMO port numbers
Plus radio-frequency cable way and antenna amount；One kind is conversion system, and it by the frequency conversion of frequency identical MIMO signal is difference that principle is
Frequency after be transmitted with radio-frequency cable all the way, finally to frequency conversion after antenna be original frequency after carried out by different antennas
Covering, this mode can be described as MIMO frequency conversion distributed coverage systems.This MIMO frequency conversions distributed coverage system generally includes conduct
The base station of information source, the antenna of signal distal end, between the base station and antenna transmission signal transmission channel, and be arranged on biography
Defeated passage is close to the access unit of the side of the base station and is arranged on far-end unit of the transmission channel near the antenna side.
MIMO frequency conversions distributed coverage system can be divided into various modes again, respectively as shown in Figure 1, Figure 2, Figure 3 and Figure 4.Wherein
The characteristics of pattern 1 shown in Fig. 1 is that have not frequency conversion all the way, but it has the disadvantage that frequency variation signal has delay inequality, meeting with not frequency variation signal
MIMO performances are caused to decline to a great extent, especially distribution covering indoors is generally using in the case of 2 × 2MIMO.Pattern shown in Fig. 2
2 the characteristics of is that have not frequency conversion all the way, but in order to adjust delay inequality, when access unit increased a time delay adjusting module and adjust
Prolong, to solve because of the adverse effect that delay inequality is brought, but it has the disadvantage that time delay adjusting module needs to bear high-power, not only cost
It is high and realize that difficulty is very big.The characteristics of pattern 3 shown in Fig. 3 is that have not frequency conversion all the way, in order to adjust delay inequality, in far-end unit
Increased the time delay of time delay adjusting module adjustment not frequency variation signal, but it has the disadvantage many quantity, high cost and in polyphyly
Integration road increased other systems link load, influence the covering of other systems.The characteristics of pattern 4 shown in Fig. 4 is all of the port
Frequency conversion is all carried out, therefore in the absence of delay inequality problem, but it has the disadvantage high cost and increased other in multisystem mixing
System link is lost, and influences the covering of other systems.
Four kinds of MIMO frequency conversions distributed coverage systems of the above all fail to meet the requirement of existing mobile communication, for this reason, it may be necessary to one
The frequency conversion distributed coverage system that performance is more preferable, cost is lower is planted, preferably to support the application of MIMO technology.
Real new content
The new purpose of this reality is to propose a kind of MIMO signal transmission distributed coverage system, and the system cost is low
The honest and clean, stability of a system is good, and effectively improves the coverage effect of signal.
To reach above technical purpose, the technical scheme that this reality is newly used is as follows：
A kind of radio frequency remoto module, the radio frequency remoto module includes interface unit and remote radio subelement, described to penetrate
Frequency zooms out subelement includes the sending signal processing module, descending time delay adjusting module, the descending power amplifier module that are sequentially connected, successively
The reception signal processing module of connection, uplink time delay adjusting module, up low noise amplification module, also including transmitting-receiving combining module and end
Mouthful；Described interface unit one end connects the baseband processing module, the other end connect respectively the sending signal processing module and
Receive signal processing module；Described transmitting-receiving combining module one end connects the descending power amplifier module and up LNA mould respectively
Block, the other end connects the port.
The radio frequency remoto module is provided with multiple remote radio subelements, the interface unit respectively with described in multiple
The sending signal processing module of remote radio subelement and reception signal processing module connection, each remote radio subelement are all provided with
There is port.
A kind of MIMO signal Transmission system, including the transmission of base station, antenna, the connection base station and antenna is logical
Road, and be arranged in transmission channel near base station end access unit and be arranged in transmission channel near the distal end of antenna end
Unit, the base station includes baseband processing module and radio frequency remoto module, and the radio frequency remoto module is appointed using foregoing
One radio frequency remoto module, and the interface unit of radio frequency remoto module connects baseband processing module, port connection transmission channel.
The access unit includes the first frequency conversion subelement and the first multiplefrequency mixer, and the first frequency conversion subelement includes
First son transmitting-receiving combining module, the second son transmitting-receiving combining module, descending frequency-variable module and upstream frequency recovery module,
The first son transmitting-receiving combining module connects the port of the remote radio subelement, the first son transmitting-receiving combining
Descending frequency-variable module and upstream frequency recovery module, second son are connected between module and the second son transmitting-receiving combining module respectively
Transmitting-receiving combining module connects the first multiplefrequency mixer, and first multiplefrequency mixer is connected by transmission channel with far-end unit.
The access unit includes multiple first frequency conversion subelements, each described first frequency conversion subelement correspondence one
Closed with the second son transmitting-receiving of multiple first frequency conversion subelements the port of remote radio subelement, described first multiplefrequency mixer one end
Road module connection, while also the port with the remote radio subelement is directly connected to, the other end passes through transmission channel and distal end
Unit is connected.
The far-end unit includes the second frequency conversion subelement and the second multiplefrequency mixer, and the second frequency conversion subelement includes
3rd son transmitting-receiving combining module, the 4th son transmitting-receiving combining module, up frequency-variable module and downstream frequency recovery module,
Second multiplefrequency mixer connects access unit, the 3rd son transmitting-receiving combining module connection by transmission channel
Second multiplefrequency mixer, up frequency conversion is connected between the 3rd son transmitting-receiving combining module and the 4th son transmitting-receiving combining module respectively
Module and downstream frequency recovery module, the 4th son transmitting-receiving combining module connection antenna.
The far-end unit includes multiple second frequency conversion subelements, each described second frequency conversion subelement correspondence one
Antenna, described second multiplefrequency mixer one end is connected with the 3rd son transmitting-receiving combining module of multiple second frequency conversion subelements, while
Also it is directly connected to antenna, the other end is connected by transmission channel with access unit.
The access unit also includes synchronizing signal the first synchronization module for the treatment of, and the far-end unit also includes
The second synchronization module for the treatment of is synchronized to signal, it is single that first synchronization module and the second synchronization module connect access respectively
First and each module of far-end unit simultaneously controls its signal synchronization.
The transmission channel is one kind or combination in radio-frequency cable, optical fiber, coaxial cable and passive device.
The transmission channel includes wall scroll radio-frequency cable and at least one passive device.
Compared with prior art, this reality newly has following advantage：
First, the utility model is provided with time delay adjusting module in base station, and the elimination of delay inequality is realized in base station end, can be significantly
Lift the performance of the system.
Secondly, the utility model is arranged on the time delay adjusting module in base station, using one section of program code it is achieved that
Manufacture, transformation and maintenance cost are very low, and in multisystem mixing, the loss influence on other systems is small.
Finally, the utility model sets time delay adjusting module in base station, it is to avoid more active module embedded thereins are used in system,
System is not only allowed more to be stablized, and will not be because of the coverage effect of the fault impact multiple-input and multiple-output of active module embedded therein.
Brief description of the drawings
Fig. 1 be in the prior art all the way signal not frequency conversion, do not adjust the multiple-input and multiple-output co-cable transmission system of delay inequality
Structural representation.
Fig. 2 be in the prior art all the way signal not frequency conversion, near-end adjust delay inequality multiple-input and multiple-output co-cable transmission system
System structural representation.
Fig. 3 be in the prior art all the way signal not frequency conversion, distal end adjust delay inequality multiple-input and multiple-output co-cable transmission system
System structural representation.
Fig. 4 is the multiple-input and multiple-output co-cable transmission system structure diagram of all signal frequency conversions in the prior art.
Fig. 5 is the structural representation of the new MIMO signal Transmission system of this reality.
Fig. 6 is the structural representation of radio frequency remoto module in the new MIMO signal Transmission system of this reality.
Fig. 7 is structural representation when base station in the new MIMO signal Transmission system of this reality is TDD base stations.
Specific embodiment
This reality is newly described in further detail below in conjunction with the drawings and specific embodiments.
The new MIMO signal Transmission system of this reality with reference to shown in Fig. 5, it include base station 1 as information source,
The antenna 5 of signal distal end, between the base station 1 and antenna 5 transmission signal transmission channel 3, and be arranged on the transmission
The access unit 2 of one end of the base station 1 is close on passage 3 and is arranged on and the one of the antenna 5 is close in the transmission channel 3
The far-end unit 4 at end.The Transmission system can realize the indoor and outdoor distribution covering of mobile communication signal.
With reference to Fig. 5 and Fig. 6, the base station 1 is by baseband processing module 11 (Building Base band Unit, BBU)
The distributed base station constituted with radio frequency remoto module 12 (Remote Radio Unit, RRU), it uses Remote Radio Technique, will
Baseband processing module and radio frequency processing module in traditional base station are separated from each other, and RRU is arranged on closer to the one of antenna
End, the RRU is connected to macro base station or independent Base Band Unit (i.e. BBU) by optical fiber.This distributed base station (BBU+RRU
Pattern) volume is smaller, and capacity is bigger, it is easier to install, and the adaptability to environment is also stronger.
With reference to Fig. 6, the radio frequency remoto module 12 include for receive and send baseband signal interface unit 121 and with
The remote radio subelement 12A compositions of the connection of the interface unit 121.
The interface unit 121 is connected by optical fiber 13 with the baseband processing module 11, for receiving and sending base
Band signal.
Multiple remote radio subelement 12A being connected with the interface unit 121 are set in the radio frequency remoto module 12,
Each described remote radio subelement 12A is by the signal processing module 122 for being connected with the interface unit, for eliminating letter
Number delay inequality time delay adjusting module 123, for signal is amplified power amplifier module, for carrying out noise reduction to signal
Filtration module, for being combined to signal/the transmitting-receiving combining module 126 of branch, and for sending/receiving the port of signal
127 compositions.
The signal processing module 122 includes being treated for processing the sending signal processing module 1221 of descending baseband signal
With the reception signal processing module 1222 that up radiofrequency signal is treated for processing.The sending signal processing module 1221 is input into
End and the reception output end of signal processing module 1222 are connected with the interface unit 121 respectively.
Further, the time delay adjusting module 123 includes being connected with the output end of sending signal processing module 1221
The delay inequality for adjusting downstream signal descending time delay adjusting module 1231, and with the reception signal processing module
The uplink time delay adjusting module 1232 of the delay inequality for adjusting upward signal of 1222 inputs connection.
Further, the power amplifier module is the descending power amplifier module 124 being amplified to downstream signal, described in each
The input of descending power amplifier module 124 is connected with the descending output end of time delay adjusting module 1231 each described；The filtration module is
The up low noise amplification module 125 of noise reduction is carried out to upward signal, each described up output end of low noise amplification module 125 and each institute
State the connection of the input of uplink time delay adjusting module 1232.The output end of descending power amplifier module 124 and up low noise amplification module 125
Also transmitting-receiving combining module 126 described with is connected input respectively.
Thus, each each module of the remote radio subelement 12A is connected and forms both links：
Downlink：By the sending signal processing module 1221, descending time delay adjusting module 1231, descending power amplifier module
124th, transmitting-receiving combining module 126 and port 127 constitute, and it provides after baseband signal is converted into radiofrequency signal and is transmitted
Downlink；
Up-link：Adjusted by the port 127, transmitting-receiving combining module 126, up low noise amplification module 125, uplink time delay
Module 1232 and reception signal processing module 1222 are constituted, and it provides radio signal transmission and the reconvert afterwards that arrives turns into base band
The up-link of signal.
In order that multiple signals can be transmitted by same radio-frequency cable, it is necessary to enter in the multiple signals
Frequency conversion is carried out before radio-frequency cable, the multiple signals are reduced by being also needed to after radio-frequency cable into line frequency.
With continued reference to Fig. 5, the access unit 2 includes N-1 the first change corresponding to the remote radio subelement 12A
Frequency subelement 21 (quantity for setting remote radio subelement is N), and first multiplefrequency mixer 22.First frequency conversion
The first son transmitting-receiving combining module 211 and second that unit 21 includes two subports (not shown), is respectively connected with a subport
Son transmitting-receiving combining module 214, also including being connected to the first son transmitting-receiving combining module 211 and the second son transmitting-receiving combining mould
Descending frequency-variable module 212 and upstream frequency recovery module 213 between block 214.Further, the first son transmitting-receiving combining mould
Block 211 is connected with the port 127 of the remote radio subelement 12A；The second son transmitting-receiving combining module 214 and described first
Multiplefrequency mixer 22 is connected.
As shown in figure 5, the far-end unit 4 include N-1 corresponding to the antenna 5 the second frequency conversion subelement 42 (my god
The quantity of line is N), and second multiplefrequency mixer 41.The second frequency conversion subelement 42 (is not schemed including two subports
Show), the 3rd son transmitting-receiving combining module 421 and the 4th son transmitting-receiving combining module 424 that are respectively connected with a subport, also including point
The downstream frequency also grand master pattern between the 3rd son transmitting-receiving combining module 421 and the 4th son transmitting-receiving combining module 424 is not connected to
Block 422 and up frequency-variable module 423.Further, the 3rd son transmitting-receiving combining module 421 and second multiplefrequency mixer
41 connections；The 4th son transmitting-receiving combining module 424 is connected with the antenna 5.
With continued reference to Fig. 5, the transmission channel 3 is stablizing for the electromagnetic wave for mobile communication signal is provided and with screen
Cover the transmission medium of function.The transmission channel 3 includes first passage 31, the connection of the connection base station 1 and the access unit 2
The second channel 32 of the access unit 2 and far-end unit 4, and connect the threeway of the far-end unit 4 and the antenna 5
Road 33.Specifically, the first passage 31 be connected to N-1 remote radio subelement 12A port 127 and with the port
Between the subport of 127 the first corresponding frequency conversion subelements 21；In the present embodiment, the first passage 31 is by the He of transmission line 311
Coupler 312 is constituted, the transmission line 311 for radio-frequency cable, optical fiber, coaxial cable or other known transmission lines wherein it
One, the coupler 312 is one of representative known passive device.Further, the second channel 32 is connected
Between the first multiplefrequency mixer 22 of the access unit 2 and the second multiplefrequency mixer 41 of the far-end unit 4；In transmission
In compartment system, near base station end, the far-end unit 4 is close to antenna end to the access unit 2, therefore, the access unit 2
It is generally distant and far-end unit 4 between, therefore from the convenience and the stability and safety of signal transmission of cable wiring manufacture
Property consider, the second channel 32 generally uses radio-frequency cable, preferably using wall scroll radio-frequency cable as the second channel 32.More
Further, the third channel 33 is connected to port and the correspondence of each the second frequency conversion subelement 42 of the far-end unit 4
Antenna 5 between, in the present embodiment, the third channel 33 as transmission line (radio-frequency cable, optical fiber, coaxial cable or other known in
Transmission line) connection, but those skilled in the art are it is to be understood that setting up for the third channel 33 can also be by known in other
Mode realize.
To optimize the transmission control of multiple signals, the transmission channel 3 also includes being directly connected to an end of the base station 1
The fourth lane 34 of the first multiplefrequency mixer 22 of mouth 127 and the access unit 2, and it is directly connected to the far-end unit 4
The second multiplefrequency mixer 41 and one of antenna 5 Five-channel 35.The fourth lane 34 and Five-channel 35 are taken
If can realize in a known manner.Thus, by the fourth lane 34 and the signal of the transmission of Five-channel 35 without frequency conversion
Treatment and frequency reduction treatment.
With reference to Fig. 7, when the base station 1 is using time division duplex (Time Division Duplexing, TDD) standard, institute
Radio frequency remoto module is stated for tdd mode radio frequency remoto module 13.In the GSM of tdd mode, receive and be transmitted in
The different time-gap of same frequency channel (i.e. carrier wave), is used to ensure the time separate, receive and transmit channel.Thus, it is guarantee
The synchronism of the signal of base station end and antenna end, the access unit 2 needs to set the first synchronization module 23, simultaneously, described
Far-end unit 4 needs to set the second synchronization module 43, is all carried out before multiplefrequency mixer combining treatment and after branch process
Synchronization process is synchronous with the signal of base station end to ensure the signal of antenna end.
With continued reference to Fig. 5 and Fig. 6, the new MIMO signal of this reality is further illustrated by specific embodiment and is passed
Defeated system.Embodiments thereof includes including the side to the transmission control of many downstream signals for the control method of multipath signal propagation
The two transfer control methods are specifically described by method and the method for the transmission control to many upward signals individually below.
The downstream signal refers generally to send the signal transmitted to the reception antenna of distal end from base station end, when a base station pair
When answering multiple reception antennas, the downstream signal of multichannel is formed.Carried out using the new MIMO signal Transmission system of this reality
The transmission control of many downstream signals, comprises the following steps：
(1) downgoing baseband signal is transmitted to remote radio mould from the baseband processing module 11 of the base station 1 by optical fiber 13
Downgoing baseband signal is divided into N roads downgoing baseband signal respectively through every by the interface unit 121 of block 12, the interface unit 121
The individual remote radio subelement 12A；
(2) transmit to the downgoing baseband signal of remote radio subelement 12A each described and processed by the sending signal
The treatment of module 1221 is converted to downlink radio-frequency signal, and the downlink radio-frequency signal sequentially passes through the descending He of time delay adjusting module 1231
The treatment of descending power amplifier module 124, is closed by the downlink radio-frequency signal of time delay adjustment and power amplifier by the transmitting-receiving combining module 126
It is outlet that road is processed as after primary combining signal with the port 127, and wherein will be passed by the first passage 31 on N-1 roads
Transport to the first frequency conversion subelement 21 of the access unit 2；Remaining primary combining signal described all the way is by the fourth lane
34 are directly transferred to the first multiplefrequency mixer 22；
(3) the first son of the first frequency conversion subelement 21 receives and dispatches combining module 211 by the primary combining Signal separator
Go out downstream signal, the downstream signal that the descending frequency-variable module 212 pairs is isolated carries out frequency-conversion processing；
(4) first multiplefrequency mixer 22 by described by frequency conversion Hou N-1 road downstream signals and all the way without frequency conversion
The combining of primary combining signal be secondary combining signal, the secondary combining signal by the second channel 32 transmit to it is described far
Second multiplefrequency mixer 41 of end unit 4；
(5) second multiplefrequency mixer 41 the secondary combining Signal separator is gone out by the downstream signal after frequency conversion and
Primary combining signal without frequency conversion；
(6) 422 pairs of downstream signals by after frequency conversion of the downstream frequency recovery module enter line frequency reduction, then
Continued traveling downwardly to corresponding antenna 5 by the third channel 33；The primary combining signal without frequency conversion is by described the
Five-channel 35 directly comes downwards to corresponding antenna 5.
The upward signal refers generally to send the signal transmitted to base station end from reception antenna, when multiple reception antennas correspondence
During one base station, the upward signal of multichannel is formed.How up carried out using the new MIMO signal Transmission system of this reality
The transmission control of signal, comprises the following steps：
(1) N roads upward signal is received by different antennas 5, and wherein the upward signal described in N-1 roads passes through the described 3rd
Passage 33 is transmitted to the second frequency conversion subelement 42 of corresponding far-end unit 4, and the upward signal is logical by the described 5th all the way
Road 35 is directly transferred to second multiplefrequency mixer 41；
(2) it is described to transmit the upward signal to the second frequency conversion subelement 42 each described by the up frequency-variable module 423
Carry out frequency-conversion processing；
(3) second multiplefrequency mixer 41 by described by frequency conversion Hou N-1 road upward signals and all the way without frequency conversion
Upward signal combining be combining signal, then the combining signal is transmitted to the access unit by the second channel 32
2 the first multiplefrequency mixer 22；
(4) the combining signal is separated again into N roads upward signal by first multiplefrequency mixer 22, and it includes N-1
Road by frequency-conversion processing upward signal and the upward signal without frequency-conversion processing all the way；
(5) the upstream frequency recovery module 213 pairs of the first frequency conversion subelement 21 of the access unit 2 is described by frequency conversion
Upward signal enter line frequency reduction, the base station 1 is then gone upward to by the first passage 31；It is described without the upper of frequency conversion
Row signal directly goes upward to the base station 1 by the fourth lane 34；
(6) each the remote radio subelement 12A correspondences in the base station 1 receive the upward signal all the way, it is described on
Row signal is that entrance enters the remote radio subelement 12A, the up letter with the port 127 and transmitting-receiving combining module 126
The treatment of the up low noise amplification module 125 and uplink time delay adjusting module 1232 number is sequentially passed through, with reducing upward signal
Noise and eliminate upward signal between delay inequality；
(7) upward signal for adjusting by noise reduction and time delay is in the reception signal processing module 1222 by radiofrequency signal
Baseband signal is converted to, the up baseband signal in N roads is collected by the interface unit 121, and is transmitted by the optical fiber 13
To being analyzed and processing with the signal up to this of baseband processing module 11.
Further, when base station of the base station 1 for TDD standards, for ensure the transmitting of up-downgoing frequency variation signal receive with
Base station signal synchronization, the up-downgoing frequency variation signal into the access unit 2 is needed using the same of first synchronization module 23
Step treatment；Up-downgoing frequency variation signal into the far-end unit 4 is needed using the synchronization process of second synchronization module 43
(as shown in Figure 7).
In sum, the signal transmission system of the new multiple-input and multiple-output of this reality is cheap, the stability of a system is good, and is based on
The method for transmitting signals of the multiple-input and multiple-output that the system is realized effectively improves the coverage effect of signal.
Above-described embodiment is the new preferably implementation method of this reality, but is not merely restricted to the described embodiments, other
Any Spirit Essence new without departing from this reality and the change, modification, replacement made under principle, combine, simplify, should be equivalent
Substitute mode, is all contained within the new protection domain of this reality.
Claims (10)
1. a kind of radio frequency remoto module, it is characterised in that：The radio frequency remoto module includes that interface unit and remote radio are single
Unit, the remote radio subelement includes
Sending signal processing module, descending time delay adjusting module, the descending power amplifier module being sequentially connected,
Reception signal processing module, uplink time delay adjusting module, the up low noise amplification module being sequentially connected,
Also include transmitting-receiving combining module and port；Described interface unit one end connects baseband processing module, and the other end is connected respectively
The sending signal processing module and reception signal processing module；
Described transmitting-receiving combining module one end connects the descending power amplifier module and up low noise amplification module, other end connection institute respectively
State port.
2. radio frequency remoto module as claimed in claim 1, it is characterised in that：The radio frequency remoto module is provided with described in multiple and penetrates
Frequency zooms out subelement, interface unit sending signal processing module respectively with multiple remote radio subelements and reception
Signal processing module is connected, and each remote radio subelement is equipped with port.
3. a kind of signal transmission system of the application radio frequency remoto module, it is characterised in that：It is described including base station, antenna, connection
Base station and the transmission channel of antenna, and be arranged in transmission channel near base station end access unit and be arranged on transmission channel
On near antenna end far-end unit, the base station include baseband processing module and radio frequency remoto module, the remote radio mould
Block using radio frequency remoto module as described in claim 1 or claim 2, and radio frequency remoto module interface unit linker
Tape handling module, port connection transmission channel.
4. signal transmission system as claimed in claim 3, it is characterised in that：The access unit includes the first frequency conversion subelement
And first multiplefrequency mixer, the first frequency conversion subelement include the first son transmitting-receiving combining module, the second son transmitting-receiving combining module,
Descending frequency-variable module and upstream frequency recovery module,
The first son transmitting-receiving combining module connects the port of the remote radio subelement, the first son transmitting-receiving combining module
It is connected descending frequency-variable module and upstream frequency recovery module, the second son transmitting-receiving respectively between the second son transmitting-receiving combining module
Combining module connects the first multiplefrequency mixer, and first multiplefrequency mixer is connected by transmission channel with far-end unit.
5. signal transmission system as claimed in claim 4, it is characterised in that：The access unit includes that multiple described first become
Frequency subelement, each described first frequency conversion subelement correspondence, one port of remote radio subelement, the first multifrequency combining
Second son transmitting-receiving combining module of device one end and multiple first frequency conversion subelements is connected, at the same also with the remote radio subelement
Port be directly connected to, the other end is connected by transmission channel with far-end unit.
6. signal transmission system as claimed in claim 3, it is characterised in that：The far-end unit includes the second frequency conversion subelement
And second multiplefrequency mixer, the second frequency conversion subelement include the 3rd son transmitting-receiving combining module, the 4th son transmitting-receiving combining module,
Up frequency-variable module and downstream frequency recovery module,
Second multiplefrequency mixer connects access unit, the 3rd son transmitting-receiving combining module connection second by transmission channel
Multiplefrequency mixer, up frequency-variable module is connected between the 3rd son transmitting-receiving combining module and the 4th son transmitting-receiving combining module respectively
With downstream frequency recovery module, the 4th son transmitting-receiving combining module connection antenna.
7. signal transmission system as claimed in claim 6, it is characterised in that：The far-end unit includes that multiple described second become
Frequency subelement, each one antenna of the second frequency conversion subelement correspondence, described second multiplefrequency mixer one end and multiple second
3rd son transmitting-receiving combining module connection of frequency conversion subelement, while be also directly connected to antenna, the other end by transmission channel with
Access unit is connected.
8. signal transmission system as claimed in claim 3, it is characterised in that：The access unit also includes carrying out together signal
The first synchronization module for the treatment of is walked, the far-end unit also includes synchronizing signal the second synchronization module for the treatment of, described
First synchronization module and the second synchronization module connect access unit and each module of far-end unit and control its signal synchronization respectively.
9. signal transmission system as claimed in claim 3, it is characterised in that：The transmission channel is radio-frequency cable, optical fiber, same
One kind or combination in shaft cable and passive device.
10. signal transmission system as claimed in claim 9, it is characterised in that：The transmission channel includes wall scroll radio-frequency cable
With at least one passive device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621056471.5U CN206196066U (en) | 2016-09-14 | 2016-09-14 | Signal transmission system of remote radio head module and applied this module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621056471.5U CN206196066U (en) | 2016-09-14 | 2016-09-14 | Signal transmission system of remote radio head module and applied this module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206196066U true CN206196066U (en) | 2017-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621056471.5U Expired - Fee Related CN206196066U (en) | 2016-09-14 | 2016-09-14 | Signal transmission system of remote radio head module and applied this module |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111193532A (en) * | 2018-11-14 | 2020-05-22 | 华为技术有限公司 | Network equipment, signal processing device and antenna device |
| CN111313939A (en) * | 2020-02-24 | 2020-06-19 | 中国电信股份有限公司 | Multi-channel indoor distribution system and MIMO signal transmission method thereof |
| CN111934698A (en) * | 2019-05-13 | 2020-11-13 | 大唐移动通信设备有限公司 | Radio frequency signal receiving method, radio frequency signal sending method and device |
| CN112533282A (en) * | 2020-10-22 | 2021-03-19 | 中国电信股份有限公司 | Frequency synchronization method and system, near-end machine, far-end machine and storage medium |
| CN114189260A (en) * | 2021-10-26 | 2022-03-15 | 江苏通鼎宽带有限公司 | Power amplifier for pRRU and pRRU power amplification all-in-one machine |
| WO2023065576A1 (en) * | 2021-10-21 | 2023-04-27 | 普罗斯通信技术（苏州）有限公司 | Networking access apparatus and system |
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2016
- 2016-09-14 CN CN201621056471.5U patent/CN206196066U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111193532A (en) * | 2018-11-14 | 2020-05-22 | 华为技术有限公司 | Network equipment, signal processing device and antenna device |
| CN111193532B (en) * | 2018-11-14 | 2021-12-10 | 华为技术有限公司 | Network equipment, signal processing device and antenna device |
| CN111934698A (en) * | 2019-05-13 | 2020-11-13 | 大唐移动通信设备有限公司 | Radio frequency signal receiving method, radio frequency signal sending method and device |
| CN111313939A (en) * | 2020-02-24 | 2020-06-19 | 中国电信股份有限公司 | Multi-channel indoor distribution system and MIMO signal transmission method thereof |
| CN111313939B (en) * | 2020-02-24 | 2021-03-16 | 中国电信股份有限公司 | Multi-channel indoor distribution system and MIMO signal transmission method thereof |
| CN112533282A (en) * | 2020-10-22 | 2021-03-19 | 中国电信股份有限公司 | Frequency synchronization method and system, near-end machine, far-end machine and storage medium |
| WO2023065576A1 (en) * | 2021-10-21 | 2023-04-27 | 普罗斯通信技术（苏州）有限公司 | Networking access apparatus and system |
| CN114189260A (en) * | 2021-10-26 | 2022-03-15 | 江苏通鼎宽带有限公司 | Power amplifier for pRRU and pRRU power amplification all-in-one machine |
| CN114189260B (en) * | 2021-10-26 | 2023-08-08 | 江苏通鼎宽带有限公司 | Power amplifier for pRRU and pRRU power amplification integrated machine |
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