CN105141363B - Realize the optical fiber distribution system and method for the multiple access of different location information source - Google Patents
Realize the optical fiber distribution system and method for the multiple access of different location information source Download PDFInfo
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Abstract
The invention discloses a kind of optical fiber distribution systems for the multiple access for realizing different location information source, including multiple access units, at least one expanding element of each access unit is connected respectively, and at least one far-end unit being connected with the expanding element, each access unit support multiple communication standards of different operators respectively；In the downlink, each access unit will be sent to corresponding each expanding element after the corresponding communication standard label of the radiofrequency signal received addition by optical fiber；The downlink optical signal that each expanding element sends multiple access units of the support different operators received is sent to corresponding each far-end unit after carrying out data processing by optical fiber；Each far-end unit handles the optical signal received to be converted into the radiofrequency signal of corresponding communication standard to be transmitted to user.The present invention also provides a kind of communication means of the optical fiber distribution system for the multiple access for being adapted to carry out different location information source.
Description
Technical field
The present invention relates to electronic device field more particularly to a kind of fiber distribution systems for the multiple access for realizing different location information source
System and method.
Background technology
China telecommunication passes through development long-term for many years, the situation for having gradually formed 2G/3G/4G and having deposited, mobile communication letter
Number transmission is transmitted by certain frequency, and frequency and network formats that three big operators are possessed are not quite similar, at present
It is respectively in the standard used in the market：
China Mobile：GSM800、GSM1800、TD-SCDMA、TD-LTE；
China Unicom：GSM800、GSM1800、WCDMA、TD-LTE、FDD-LTE；
China Telecom：CDMA、CDMA2000、TD-LTE、FDD-LTE.
It is above-mentioned not include the excessive standard that each generation communication technology generates in the process in speech also, thus it is not difficult to find out old China hand
The standard that letter industry is being on active service is many, and it is just more numerous that each operator is based on used frequency under various communication standards
Miscellaneous to differ, this communication present situation so that the arrangement and method for construction that signal covers is complicated, and difficulty of construction is big, easily formed coverage hole with
Ping-pong covers the difficulty and cost of signal optimization, public resource is caused to waste after also increasing.
In this case, multi-service compartment system (Multiservice Distributed Access System
Solution, MDAS) it comes into being, MDAS, as transmission medium, is supported Duo Jia operators, supports more systems using cable/optical fiber
Formula, multicarrier, and integrated WLAN (Wireless LAN, WLAN) system, a step solve voice and data service and need
It asks, improves the accuracy of signal covering, be greatly reduced the complexity of signal covering engineering and the difficulty of construction maintenance, with
Traditional analog compartment system is compared, and is provided simultaneously with mixed networking, delay compensation, automatic carrier track, uplink bottom are made an uproar the features such as low.
MDAS is mainly made of access unit (MAU/MU), expanding element (MEU/EU) and far-end unit (MRU/RU).
MDAS basic functional principles are as follows：
Downlink (base station --->User)：The signal of base station/RRU is linked into after system and carries out number to signal by MU
Processing is packed into digital signal, then converts digital signals into optical signals optical fiber by opto-electronic conversion and be transmitted to EU；EU will
The signal that MU is transmitted by optical fiber is handled, then is transferred to RU by optical fiber；The signal processing that RU transmits EU amplifies
Afterwards, covered away by antenna, be transferred to user.
Uplink (user --->Base station):After the information that user sends out is received by RU, RU to signal at
Reason is transferred to EU by optical fiber again；All RU signals transmitted are digitized after processing is packaged and form light by opto-electronic conversion by EU
Signal, then MU is transmitted to by optical fiber；After the digital signal of EU is packaged reduction by MU, base station/RRU is transferred to.
Nowadays in the market the most basic structure composition of multi-service optical fiber distribution system currently in use as shown in Figure 1, but
This basic structure can not meet actual application demand, and waste of resource, thus be by multi-service optical fiber distribution system
System basic structure has derived following several concentration networking modes used in practical application scene：
1) star-like networking (as shown in Figure 2)；
2) chrysanthemum type networking (as shown in Figure 3)；
3) mixed type networking (as shown in Figure 4).
The essence for 3 kinds of networking modes being made of basic structure is the extended capability using EU, EU support the extension of RU from
And realize star-like networking mode；EU supports are to the expansion cascading of EU so as to fulfill chrysanthemum type networking mode；Two kinds of extended capability collection
Use is closed so as to fulfill mixed networking mode.
The standard that the multi-service optical fiber distribution system of above-mentioned three kinds of networking modes is supported is with frequency range by a main access
Unit (MU) determine, when MU only supports the standard and frequency range of China Mobile 2G/3G/4G, no matter more industry of which kind of networking mode
Business optical fiber distribution system can only also cover and handle the communication service of China Mobile.It is needed if desired for the business of other operators is supported
Asking just needs to replace entire multi-service optical fiber distribution system, including MU, EU and RU or installs the whole series additional again and supports other operators
Standard and frequency range multi-service optical fiber distribution system.Such as：Unicom is extended on the basis of original has covered China Mobile's signal
It covers, is accomplished by the following way with telecommunication signal：
It adds respectively again and supports unicom and the standard of telecommunications and the optical fiber distribution system of frequency range to cover respective signal,
So realize that full signal covering need to just amount to 3 unjacketed optical fiber compartment systems, system rectification schematic diagram is as shown in Figure 5.
Above-mentioned realization method needs to set two sets or more of compartment system, realizes that the whole network covers and is required to again or repeatedly
Wholly-owned input, covering quantities will also be multiplied, and cause the wasting of resources.
As it can be seen that standard extension is carried out to the region covered using existing multi-service optical fiber distribution system to realize different location
The multiple access of information source, quantities can be multiplied with cost, original serious waste of resources.
The content of the invention
The purpose of the embodiment of the present invention is to provide optical fiber distribution system and the side of a kind of multiple access for realizing different location information source
Method, can effectively solve multi-service optical fiber distribution system carry out afterwards communication standard extension with the whole network cover when need overlapping investment,
The problem of repeating to construct.
An embodiment of the present invention provides a kind of optical fiber distribution systems for the multiple access for realizing different location information source, are connect including multiple
Enter unit, connect at least one expanding element of each access unit respectively and be connected with the expanding element to
A few far-end unit, wherein, each access unit supports multiple communication standards of different operators respectively；
In the downlink, the radiofrequency signal received is added corresponding communication standard label by each access unit
Corresponding each expanding element is sent to by optical fiber afterwards；Each expanding element runs the support received difference
The optical signal that multiple access units of business are sent is sent to corresponding each distal end after carrying out data processing by optical fiber
Unit；Each far-end unit handles the optical signal received to be converted into the radiofrequency signal of corresponding communication standard
To be transmitted to user；
In the uplink, the radiofrequency signal that each far-end unit RU emits the user received is added corresponding
Corresponding expanding element is sent to by optical fiber after communication standard label；The expanding element is according in the optical signal received
Communication standard label will be sent to the access unit of the support communication standard after the optical signal prosessing received；The access is single
Member handles the optical signal received to be converted into the radiofrequency signal of corresponding communication standard to be sent to corresponding information source.
As the improvement of said program, each access unit include multiple radio-frequency modules, data processing module and
Multiple photoelectric conversion modules；
Each described radio-frequency module corresponds to the radiofrequency signal for a communication standard for receiving same operator, and is converted into
Digital signal is sent to the digital signal processing module；And the digital signal for sending digital signal processing module is converted into radiofrequency signal
To be sent to corresponding information source；
The data processing module is used for the radiofrequency signal digitized processing for receiving the radio-frequency module, and adds phase
The communication standard label answered is sent to each photoelectric conversion module after being packed into digital signal；And by each light
After the electric transformed digital signal dissection process of modular converter, the communication standard label in the digital signal is sent to pair
The radio-frequency module answered；
Each photoelectric conversion module is correspondingly connected with an expanding element, for the data processing module to be sent out
The digital signal sent is converted into optical signal output；And the optical signal of input is converted into digital signal and is sent at the data
Manage module.
In one embodiment provided by the invention, each expanding element include multiple input photoelectric conversion module,
Data processing module and multiple output photoelectric modular converters；
Each input photoelectric conversion module is correspondingly connected with an access unit, and the optical signal for that will input turns
The data processing module is sent to after changing digital signal into；And the digital signal for sending the data processing module is converted
Into optical signal to export；
The digital signal that each input photoelectric conversion module is sent is carried out data processing by the data processing module
Each output photoelectric modular converter is sent to afterwards；And the number sent according to each output photoelectric modular converter
Communication standard label in signal is transmitted to the input photoelectricity modulus of conversion with the access unit of the communication standard is supported to be correspondingly connected with
Block；
The digital signal that the data processing module is sent is converted into optical signal by each output photoelectric modular converter
With output；And the optical signal of input is converted into digital signal to be sent to the data processing module.
In another embodiment provided by the invention, each expanding element includes multiple input opto-electronic conversion mould
Block, data processing module, output photoelectric modular converter and optical branching/combining module；
Each input photoelectric conversion module is correspondingly connected with an access unit, and the optical signal for that will input turns
The data processing module is sent to after changing digital signal into；And the digital signal for sending the data processing module is converted
Into optical signal to export；
The digital signal that each input photoelectric conversion module is sent is carried out data processing by the data processing module
After be sent to the output photoelectric modular converter；And leading in the digital signal sent according to the output photoelectric modular converter
Believe standard label, digital signal is sent to and input light that the access unit of the communication standard is supported to be correspondingly connected with by treated
Electric modular converter；
The digital signal all the way that the output photoelectric modular converter sends the data processing module is converted into light all the way
Signal is to be sent to the optical branching/combining module；And the optical signal all the way of the optical branching/combining module input is converted
Into digital signal all the way to be sent to the data processing module；
The optical branching/combining module is used to the optical signal all the way that the output photoelectric modular converter is sent being divided into multichannel
Identical optical signal is to export；And by the synthesis of the multipath light signal of input all the way optical signal to be sent to the opto-electronic conversion mould
Block.
As the improvement of said program, the optical branching/combining module includes an input optical port, N number of output optical port, 1*
N wavelength division multiplexers and 1*N optical branching devices；
The downlink optical signal all the way of the input optical port input is divided into the identical optical signal in N roads by the 1*N optical branching devices,
It is exported respectively by N number of output optical port；
The 1*N wavelength division multiplexers will be after the N roads traveling optical signal synthesis of N number of output optical port input all the way optical signal
It is exported by the input optical port.
As the improvement of said program, each expanding element further includes ethernet module, and the ethernet module is used
In access network based on ethernet data, the data processing module is additionally operable at the Ethernet data sent to the ethernet module
Reason, and add the digital signal sent after corresponding communication standard label with each input photoelectric conversion module and send together
To each output photoelectric modular converter.
As the improvement of said program, each expanding element further includes monitoring module, single for monitoring the extension
The working condition of other modules in member, and monitored results are sent to monitoring center.
As the improvement of said program, each expanding element further includes power extension module, for the extension
Each far-end unit power supply of unit connection.
In one embodiment provided by the invention, each far-end unit be single system structure, each distal end
Unit supports multiple communication standards of different operators respectively；Each far-end unit includes photoelectric conversion module, at data
Manage module and RF Amplifier Module；
The photoelectric conversion module is used to the optical signal of reception being converted into digital signal to be sent to the data processing
Module；And the digital signal for sending the data processing module is converted into optical signal to export；
The data processing module handles the digital signal that the photoelectric conversion module is sent, by far-end unit not
The data filtering of the communication standard of support, and the signal after filtering is sent to the RF Amplifier Module；And it is penetrated described
The digital signal that frequency amplification module is sent is sent to the photoelectric conversion module after adding corresponding communication standard label；
The signal that data processing module is sent is converted into radiofrequency signal and amplifies to be transmitted to by the RF Amplifier Module
User；And it is sent to the data processing mould by digital signal is converted into after the radiofrequency signal amplification of the user received transmitting
Block.
In another embodiment provided by the invention, each far-end unit is full system type pictorial structure, each described remote
End unit includes photoelectric conversion module, data processing module and multiple RF Amplifier Modules, each RF Amplifier Module
Multiple communication standards of different operators are supported respectively；
The photoelectric conversion module is used to the optical signal of reception being converted into digital signal to be sent to the data processing
Module；And the digital signal for sending the data processing module is converted into optical signal to export；
The data processing module handles the digital signal that the photoelectric conversion module is sent, and is believed according to number
Communication standard label in number, by treated, digital signal is sent to supports the RF Amplifier Module of the communication standard；And
The opto-electronic conversion mould is sent to after the digital signal that the RF Amplifier Module is sent is added corresponding communication standard label
Block；
The signal that data processing module is sent is converted into radiofrequency signal and amplifies to send out by each RF Amplifier Module
It penetrates to user；And it is sent to digital signal is converted into after the radiofrequency signal amplification of the user received transmitting at the data
Manage module.
The present invention also provides a kind of communication means, the optical fiber distribution system of the multiple access of different location information source is adapted to carry out
In, wherein, the optical fiber distribution system includes multiple access units, at least one expansion for connecting each access unit respectively
Exhibition unit and at least one far-end unit being connected with the expanding element, each access unit support difference respectively
Multiple communication standards of operator；The described method includes：
Downlink step：The radiofrequency signal received is added corresponding communication standard label by each access unit
Corresponding each expanding element is sent to by optical fiber afterwards；Each expanding element runs the support received difference
The optical signal that multiple access units of business are sent is sent to corresponding each distal end after carrying out data processing by optical fiber
Unit；Each far-end unit handles the optical signal received to be converted into the radiofrequency signal of corresponding communication standard
To be transmitted to user；
Uplink step：The radiofrequency signal that each far-end unit RU emits the user received is added corresponding
Corresponding expanding element is sent to by optical fiber after communication standard label；The expanding element is according in the optical signal received
Communication standard label will be sent to the access unit of the support communication standard after the optical signal prosessing received；The access is single
Member handles the optical signal received to be converted into the radiofrequency signal of corresponding communication standard to be sent to corresponding information source.
Compared with prior art, the optical fiber distribution system of the multiple access disclosed by the invention for realizing different location information source by
The communication standard label of different operators is added in uplink/downlink data packet, and up/down line number is realized according to communication standard label
According to bag classification and orient forwarding or the communication standard number that uplink/downlink data packet is not supported filtered according to communication standard label
According to so as to extend the access unit (MU) that different operators business is supported in access.Use the different location information source multichannel of the present invention
The optical fiber distribution system of access covers a signal blind zone one Operator Specific Service, it is necessary to be covered to other Operator Specific Services
During lid construction, it is only necessary to which extension access supports the access unit (MU) of other Operator Specific Services i.e. on original optical fiber distribution system
Can, without adding whole set of system again, need not repeat to construct.Therefore it is significantly more efficient using existing resource, save operator
Signal covers cost and reduces covering engineering construction difficulty.
Description of the drawings
Fig. 1 is a kind of basic structure schematic diagram of optical fiber distribution system in the prior art.
Fig. 2 is the structure diagram of the optical fiber distribution system formed using star-like networking mode.
Fig. 3 is the structure diagram of the optical fiber distribution system formed using chrysanthemum type networking mode.
Fig. 4 is the structure diagram of the optical fiber distribution system formed using mixed type networking mode.
Fig. 5 is a kind of structure diagram for the optical fiber distribution system for realizing different location information source in the prior art.
Fig. 6 is a kind of knot of the optical fiber distribution system for multiple access for realizing different location information source that the embodiment of the present invention 1 provides
Structure schematic diagram.
Fig. 7 is a kind of connecing for the optical fiber distribution system for multiple access for realizing different location information source that the embodiment of the present invention 2 provides
Enter the structure diagram of unit.
Fig. 8 is a kind of expansion of the optical fiber distribution system for multiple access for realizing different location information source that the embodiment of the present invention 3 provides
Open up the structure diagram of unit.
Fig. 9 is a kind of expansion of the optical fiber distribution system for multiple access for realizing different location information source that the embodiment of the present invention 4 provides
Open up the structure diagram of unit.
Figure 10 is the structure diagram of one embodiment of optical branching/combining module in expanding element shown in Fig. 9.
Figure 11 is a kind of the remote of the optical fiber distribution system for multiple access for realizing different location information source that the embodiment of the present invention 5 provides
The structure diagram of end unit.
Figure 12 is a kind of the remote of the optical fiber distribution system for multiple access for realizing different location information source that the embodiment of the present invention 6 provides
The structure diagram of end unit.
Figure 13 is a kind of work of the optical fiber distribution system of multiple access for realizing different location information source provided in an embodiment of the present invention
Make flow chart.
Figure 14 is a kind of fiber distribution system for multiple access for being adapted to carry out different location information source that the embodiment of the present invention 7 provides
The flow chart of the communication means of system.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without creative efforts
Embodiment belongs to the scope of protection of the invention.
It is a kind of optical fiber distribution system of multiple access for realizing different location information source provided in an embodiment of the present invention referring to Fig. 6
Structure diagram.As shown in the figure, the optical fiber distribution system of the multiple access of the different location information source of the realization includes multiple access units
It MU, at least one expanding element EU for connecting each access unit MU respectively and is connected with the expanding element EU
At least one far-end unit RU, wherein, each access unit MU supports multiple communication standards of different operators respectively.
For example, the optical fiber distribution system of the present embodiment includes three access units MU1, MU2 and MU3, wherein, MU1 is only
Support multiple communication standards (including GSM800, GSM1800, TD-SCDMA, TD-LTE) of operator of China Mobile, MU2 is only propped up
Multiple communication standards (including GSM800, GSM1800, WCDMA, TD-LTE, FDD-LTE) of China Unicom operator are held, MU3 is only
Support multiple communication standards of China Telecom (including CDMA, CDMA2000, TD-LTE, FDD-LTE).The optical fiber of the present embodiment point
Distribution system includes the upstream data input terminal of 6 expanding elements EU1, EU2, EU3, EU4, EU5 and EU6, wherein EU1, EU2, EU3
(downlink data output terminal) by the upstream data output terminal of optical fiber and access unit MU1, MU2 and MU3, (downlink data inputs
End) connection.And the upstream data output terminal of each expanding element EU is divided into can not connect multiple expanding elements, for example, extension
The upstream data output terminal of unit EU1 is connected to 8 far-end units RU1, RU2, RU3, RU4, RU5, RU6, RU7 and RU8.
In addition, the upstream data output terminal (downlink data input terminal) of each expanding element EU can also be with another extension
Unit EU connections are further to realize that the extension of data is transmitted, for example, upstream data output terminal (the lower line number of expanding element EU3
According to input terminal) it is connected with the upstream data input terminal (downlink data output terminal) of expanding element EU4, and expanding element EU4's is upper
Row data output end (downlink data input terminal) and the upstream data input terminal (downlink data output terminal) of expanding element EU5 connect
It connects ....
It should be understood that in this embodiment, each described access unit uses single system structure, each extension is single
First EU uses full system type pictorial structure, and full system type pictorial structure or single system structure can be used in the far-end unit.Wherein, single system structure
The multiple communication standards for referring to only support single operator are (for example, only support the logical of China Mobile/China Unicom/China Telecom
Believe standard)；And full system type pictorial structure is to refer to support the communication standards of all operators (for example, supporting China Mobile, middle League of Nations
Logical and China Telecom whole communication standards).
In the downlink of the optical fiber distribution system of the present embodiment, radio frequency that each access unit MU will be received
Corresponding each expanding element EU is sent to by optical fiber after the corresponding communication standard label of signal addition；Each expansion
After the optical signal progress data processing that exhibition unit EU sends multiple access unit MU of the support different operators received
Corresponding each far-end unit RU is sent to by optical fiber；Each far-end unit RU carries out the optical signal received
Processing is transmitted to user to be converted into the radiofrequency signal of corresponding communication standard.
The present embodiment optical fiber distribution system in the uplink, the use that each far-end unit RU will be received
Corresponding expanding element EU is sent to by optical fiber after the corresponding communication standard label of radiofrequency signal addition of family transmitting；The expansion
Communication standard labels of the unit EU in the optical signal received is opened up, support will be sent to after the optical signal prosessing received should
The access unit MU of communication standard；The optical signal received is handled to be converted into communicating accordingly by the access unit MU
The radiofrequency signal of standard is to be sent to corresponding information source.
It should be understood that the networking mode of EU and RU is using mixed networking side in the optical fiber distribution system that Fig. 6 is shown
Formula, but star-like networking or chrysanthemum type networking mode also can be used in the optical fiber distribution system of the present embodiment.
It is a kind of optical fiber distribution system of multiple access for realizing different location information source provided in an embodiment of the present invention with reference to figure 7
Access unit MU structure diagram.The access unit MU of the present embodiment is set as the main access of entire optical fiber distribution system
It is standby, for coupling the downlink radio-frequency signal of base station/RRU by feeder line, and digital processing is carried out to the radiofrequency signal and is packed into
Digital signal, then carrying out opto-electronic conversion to the digital signal becomes optical signal；And the uplink optical signal from EU is received, lead to
It crosses opto-electronic conversion and converts optical signals to digital signal, then radiofrequency signal is reduced to the Digital Signal Processing of packing, via feedback
Line is sent to base station/RRU.
Specifically, the access unit MU of the present embodiment includes multiple radio-frequency modules 11, data processing module 12 and multiple
Photoelectric conversion module 13, wherein：
Each described radio-frequency module 11 is equipped with prevention at radio-frequency port, and a communication for receiving same operator is corresponded to by feeder line
The radiofrequency signal of standard, and be converted into digital signal and be sent to the digital signal processing module 12；And by digital signal processing module 12
The digital signal of transmission is converted into radiofrequency signal to be sent to corresponding information source；
The data processing module 12 is used for the radiofrequency signal digitized processing for receiving the radio-frequency module 11, and adds
Corresponding communication standard label is added to be sent to each photoelectric conversion module 13 after being packed into digital signal；It and will be each
After the 13 transformed digital signal dissection process of photoelectric conversion module, the communication standard label in the digital signal
It is sent to corresponding radio-frequency module 11；
Each photoelectric conversion module 13 is correspondingly connected with an expanding element EU, for by the data processing mould
The digital signal that block 12 is sent is converted into optical signal and exports to corresponding expanding element；And the optical signal of input is converted into counting
Word signal is sent to the data processing module 12.
Preferably, the access unit MU of the present embodiment further includes power module 14 and monitoring module 15, wherein, power module
14 are used for each function module in MU (including radio-frequency module 11, data processing module 12, photoelectric conversion module 13 and prison
Control module 15) power supply.And the monitoring module 15 is used to monitor each function module in the access unit (including radio frequency
Module 11, data processing module 12, photoelectric conversion module 13 and power module 14) working condition, it is and monitored results are timely
Monitoring center is sent to, to ensure the normal work of access unit.
It is a kind of optical fiber distribution system of multiple access for realizing different location information source provided in an embodiment of the present invention with reference to figure 8
Expanding element EU structure diagram.In the present embodiment, each expanding element EU can realize the extension and conjunction of optical signal
Road, the optical signal that the radiofrequency signal under existing all communication standards is formed after MU processing conversions can be received, forward and extended.
It can also realize power extension and meet the power demands of multichannel far-end unit RU, the power supply to RU or EU is supported to extend.
Specifically, the expanding element EU of the present embodiment includes multiple input photoelectric conversion module 21, data processing module 22
And multiple output photoelectric modular converters 23；
Each input photoelectric conversion module 21 (being equipped with optical port) is correspondingly connected with an access unit MU, is used for
The optical signal of input is converted into be sent to the data processing module 22 after digital signal；And by the data processing module
22 digital signals sent are converted into optical signal to export to corresponding access unit；
The digital signal that each input photoelectric conversion module 21 is sent is carried out data by the data processing module 22
Each output photoelectric modular converter 23 is sent to after processing (subpackage after being first packaged)；And according to each output light
Communication standard label in the digital signal that electric modular converter 23 is sent, orientation are transmitted to the access list with supporting the communication standard
The input photoelectric conversion module 21 that member is correspondingly connected with；For example, in the present embodiment, when data processing module 22 receive it is described defeated
It, then will treated that number is believed when going out communication standard label with China Mobile in the digital signal of the transmission of photoelectric conversion module 23
The input photoelectric conversion module 21 with the access unit MU1 of the communication standard is supported to be correspondingly connected with number is sent to, passes through input light
Electric modular converter 21 is converted into optical signal and is sent to the access unit MU1.
Each output photoelectric modular converter 23 (being equipped with optical port) is correspondingly connected with a far-end unit RU or extension is single
First EU, the digital signal for the data processing module 22 to be sent are converted into optical signal to export to corresponding far-end unit
RU or expanding element EU；And the optical signal of input is converted into digital signal to be sent to the data processing module 22.
Preferably, in the present embodiment, each expanding element EU is further included is connected with the data processing module 22
Ethernet module 26, the ethernet module 26 is used for access network based on ethernet data, and is sent to the data processing module 22.
After the data processing module 22 receives the Ethernet data that the ethernet module 26 is sent, corresponding communication standard mark is added
After label with it is each it is described input photoelectric conversion module send digital signal be packaged together after again subpackage be sent to it is each described defeated
Go out photoelectric conversion module 23.
As the improvement of said program, each expanding element EU further includes power extension module 25, for described
Each far-end unit RU power supplies of expanding element EU connections.
As the improvement of said program, each expanding element EU further includes monitoring module 24, for monitoring the expansion
Each function module in unit EU is opened up (including input photoelectric conversion module 21, data processing module 22, output photoelectric conversion
Module 23, ethernet module 26 and power extension module 25) working condition, and monitored results are timely transmitted in monitoring
The heart, to ensure the normal work of expanding element.
It is a kind of optical fiber distribution system of multiple access for realizing different location information source provided in an embodiment of the present invention with reference to figure 9
Expanding element EU another structure diagram.Specifically, the expanding element EU of the present embodiment includes multiple input opto-electronic conversion
Module 21, data processing module 22, output photoelectric modular converter 23 and optical branching/combining module 29；
Each input photoelectric conversion module 21 (being equipped with optical port) is correspondingly connected with an access unit MU, is used for
The optical signal of input is converted into be sent to the data processing module 22 after digital signal；And by the data processing module
22 digital signals sent are converted into optical signal to export to corresponding access unit；
The digital signal that each input photoelectric conversion module 21 is sent is carried out data by the data processing module 22
The output photoelectric modular converter 23 is sent to after processing (packing)；And sent according to the output photoelectric modular converter 23
Communication standard label in digital signal, orientation are transmitted to the input light with the access unit of the communication standard is supported to be correspondingly connected with
Electric modular converter 21；For example, it in the present embodiment, is sent out when data processing module 22 receives the output photoelectric modular converter 23
It, then will treated that digital signal is sent to that this leads to support in the digital signal sent during communication standard label with China Mobile
The input photoelectric conversion module 21 that the access unit MU1 of letter standard is correspondingly connected with, is converted by inputting photoelectric conversion module 21
Optical signal is sent to the access unit MU1.
The digital signal all the way that the data processing module 22 is sent is converted into one by the output photoelectric modular converter 23
Road optical signal is to be sent to the optical branching/combining module 29；And the light all the way for inputting the optical branching/combining module 29
Signal be converted into all the way digital signal to be sent to the data processing module 22；
The optical branching/combining module 29 is used to the optical signal all the way that the output photoelectric modular converter 23 is sent being divided into
The identical optical signal of multichannel is to export to far-end unit RU or expanding element EU；And by the multipath light signal synthesis of input all the way
Optical signal is to be sent to the output photoelectric modular converter 23.
In addition, the expanding element EU of the present embodiment also includes ethernet module 26, power extension module 25 and monitoring module
24, concrete structure and effect and it is shown in Fig. 9 consistent, herein omission describe.
Wherein, structure as shown in Figure 10 can be used in the optical branching of the present embodiment/combining module 29.Optical branching/the combining
Module 29 includes an input optical port 290, N number of output optical port 293,1*N wavelength division multiplexers 291 and 1*N optical branching devices 292；
It is identical that the downlink optical signal all the way that inputs of input optical port 290 is divided into N roads by the 1*N optical branching devices 292
Optical signal is exported respectively by N number of output optical port 293；
The N roads traveling optical signal that N number of output optical port 293 inputs is synthesized light all the way by the 1*N wavelength division multiplexers 291
It is exported after signal by the input optical port 290.
It should be noted that wavelength division multiplexer is to close the different multipath light signal of wavelength to transmission inside optical fiber all the way,
Optical signal contains the optical signals of multiple and different wavelength all the way for this；And optical branching device is that optical signal is divided into the identical light of multichannel to believe
Number, the wavelength that these multipath light signals contain is identical, and the data contained are also identical.
As it can be seen that the expanding element EU of the present embodiment can also realize function shown in Fig. 8, unlike, the expansion of the present embodiment
Exhibition unit EU, which removes multiple output photoelectric modules 23 of the export expansion branch of expanding element EU shown in Fig. 8, to be left behind all the way
Output photoelectric modular converter 23, transformed optical signals optical branching/combining module 29 is divided to be extended for multipath light signal with realizing
Function, under certain condition, such as the optical signal that output photoelectric modular converter 23 exports is sufficiently strong or optical signal passes through light
Attenuation after fibre is small, then optical branching/29 port number of combining module can be unrestricted, and the advantages of this mode just breaches expansion
Open up unit EU extension quantity and the extension unmodifiable bottleneck of quantity.Common expanding element EU extensions quantity is 8 tunnels, and using this
Optical signal branch can be easily 16 or 32 etc. by kind mode.It can also customization, such as 3 are realized to EU extension RU quantity
Road or the output of 5 tunnels or 11 tunnels, and only need to change optical branching module and modification to output port number can be realized.
It is a kind of optical fiber distribution system of multiple access for realizing different location information source provided in an embodiment of the present invention with reference to figure 11
Far-end unit RU structure diagram.Wherein, the far-end unit RU of the present embodiment uses single system structure, i.e., each described remote
End unit RU supports multiple communication standards of different operators respectively.Specifically, each far-end unit RU turns including photoelectricity
Change the mold block 31, data processing module 32, RF Amplifier Module 33.Wherein：
The photoelectric conversion module 31 (being equipped with optical port) is correspondingly connected with expanding element EU by optical fiber, for what will be received
Optical signal is converted into digital signal to be sent to the data processing module 32；And send the data processing module 32
Digital signal is converted into optical signal to export to corresponding expanding element；
The digital signal that the photoelectric conversion module 31 is sent is handled (data solution by the data processing module 32
Bag), the data filtering for the communication standard that itself is not supported, and the signal after filtering is sent to the RF Amplifier Module
33；And it is sent to the light after digital signal that the RF Amplifier Module 33 is sent is added corresponding communication standard label
Electric modular converter 31.For example, when the data processing module 32 receives the digital signal of the transmission of photoelectric conversion module 31
In comprising China Mobile's standard data and China Unicom communication standard data when, if far-end unit RU is in itself
Only support China Mobile standard, then, the data processing module 32 comprising China Unicom by communicating in after unpacking
The data filtering of standard, the remaining data sending comprising China Mobile's standard is to RF Amplifier Module 33.In addition, it serves as
When the Ethernet data for the communication standard supported itself is included in the data after filter, then (pass through corresponding port) and be transmitted directly to
Connect the computer terminal of Ethernet.
The signal that data processing module 32 is sent is converted into radiofrequency signal and amplifies to send out by the RF Amplifier Module 33
It penetrates and gives user's (mobile terminal)；And it is sent to digital signal is converted into after the radiofrequency signal amplification of the user received transmitting
The data processing module 32.
It should be understood that the RF Amplifier Module 33 in the present embodiment can support multiple communication systems of same operator
Formula, can also include multiple radio frequency amplifying units, each radio frequency amplifying unit corresponds to one of the same operator of support
Communication standard.In this way, the data orientation after filtering can be transmitted to branch by the data processing module 32 based on communication standard label
Hold the radio frequency amplifying unit of the communication tags.
Preferably, the far-end unit RU of the present embodiment is further included by electric module 34 and monitoring module 35, described by electric module
34 for connecting the power extension module 25 of expanding element EU, for each work(of the electric energy that will receive into far-end unit RU
It can module (including photoelectric conversion module 31, data processing module 32, RF Amplifier Module 33 and monitoring module 35) power supply.It is described
Monitoring module 35 is used to monitor each function module in the far-end unit RU (at photoelectric conversion module 31, data
Manage module 32, RF Amplifier Module 33 and by electric module 34) working condition, and monitored results are timely transmitted in monitoring
The heart, to ensure the normal work of far-end unit RU.
It is a kind of optical fiber distribution system of multiple access for realizing different location information source provided in an embodiment of the present invention with reference to figure 12
Far-end unit RU another structure diagram.Wherein, the far-end unit RU of the present embodiment uses full system type pictorial structure, i.e. this implementation
The far-end unit RU of example supports all communication standards of various operators.
Specifically, far-end unit RU includes photoelectric conversion module 31, data processing module 32 and the amplification of multiple radio frequencies
Module 33, each RF Amplifier Module 33 support multiple communication standards of different operators respectively, wherein：
The photoelectric conversion module 31 (being equipped with optical port) is correspondingly connected with expanding element EU by optical fiber, for what will be received
Optical signal is converted into digital signal to be sent to the data processing module 32；And send the data processing module 32
Digital signal is converted into optical signal to export to corresponding expanding element；
The digital signal that the photoelectric conversion module 31 is sent is handled (data solution by the data processing module 32
Bag), and the communication standard label in digital signal, by treated, digital signal is sent to penetrating for the support communication standard
Frequency amplification module 33；And it is sent out after digital signal that the RF Amplifier Module 33 is sent is added corresponding communication standard label
Give the photoelectric conversion module 31；For example, it is sent when the data processing module 32 receives the photoelectric conversion module 31
Digital signal in comprising China Mobile's standard data and China Unicom communication standard data when, then will include China
The data correspondence of mobile communication standard is sent to the RF Amplifier Module 33 for supporting the communication standard, and will lead to comprising China Unicom
Believe the data sending of standard to another RF Amplifier Module 33 for supporting the communication standard.Likewise, when the data processing mould
In block 32 during Ethernet data comprising communication standard itself that supported, then (pass through corresponding port) and be transmitted directly to connection with
The computer terminal netted very much.
The signal that data processing module 32 is sent is converted into radiofrequency signal and amplification by each RF Amplifier Module 33
To be transmitted to user；And it is sent to the number by digital signal is converted into after the radiofrequency signal amplification of the user received transmitting
According to processing module 32.
It should be understood that the RF Amplifier Module 33 in the present embodiment can support multiple communication systems of same operator
Formula, can also include multiple radio frequency amplifying units, each radio frequency amplifying unit corresponds to one of the same operator of support
Communication standard.In this way, data orientation can be transmitted to by the data processing module 32 based on communication standard label supports the communication
The radio frequency amplifying unit of label.
In addition, the far-end unit RU of the present embodiment also includes by electric module 34 and monitoring module 35, concrete structure and function
It refer to above-described embodiment.
In the following, with reference to Figure 13, to a kind of optical fiber for the multiple access for realizing different location information source provided in an embodiment of the present invention point
The operation principle of distribution system is described in detail.Optical fiber distribution system operation principle provided in this embodiment is as follows：
Downlink
Step 1：MU data receivers
The MU of single system structure receives the radiofrequency signal that information source is sent to MU respective radio-frequencies port by feeder line.
Step 2：MU data processings
The radiofrequency signal digitized processing that the radio-frequency module of MU will receive, and communication system is added by data processing module
Formula label is packed into digital signal, and digital signal is converted into optical signal by photoelectric conversion module and exports.
Step 3：MU data sendings
Optical signals optical fiber is sent to the optical port of EU by optical port by MU.
Step 4：EU data receivers
EU optical ports receive the optical signal from MU, and the MU optical signal transmission fibers access EU of different operators is different
Optical port.Meanwhile Ethernet data is linked into EU by Ethernet interface.
Step 5：EU data processings
The optical signal received is converted to electric signal by EU by photoelectric conversion module, the electric signal and Ethernet data one
It is same that the data processing module to EU is sent to carry out data processing packing, and the digital signal of multichannel is formed, pass through multichannel opto-electronic conversion
Module (or optical branching/combining module) is converted into optical signal and send to optical port respectively.
Step 6：EU data sendings
Optical signals composite fiber is sent to the optical port of EU or RU by EU by extending optical port (containing power cord).
Step 7：RU data receivers
RU optical ports receive the optical signal from EU.
Step 8：RU data processings
The optical signal of reception is converted to digital signal by RU by photoelectric conversion module, when RU uses single system structure,
The data processing module of RU is lost the data filtering of the RU communication standards do not supported, so by identifying communication standard flag bit
The data sending after filtering is converted into radiofrequency signal to RF Amplifier Module afterwards, is sent by signal amplification；When RU is adopted
During with full system type pictorial structure, the data processing module of RU by identifying communication standard flag bit, by different systems data packet respectively into
Row data dissection process, forms new digital signal, and is distributed to the corresponding RF Amplifier Module of standard and is converted to radio frequency letter
Number, it is sent by signal amplification.
Step 9：RU signals cover
Signal, coupled to antenna, by antenna is radiate by feeder line and realizes signal covering, user terminal by radiofrequency signal
Receive the transmission that data complete a downlink signal.
Uplink
Step 1：RU data receivers
User terminal sends signal in compartment system coverage, and the communication standard of the signal is supported by RU.
Step 2：RU data processings
RU receives the radiofrequency signal that user terminal is sent out, and digital signal, the number of RU are reconverted into after amplification
The data are handled according to processing module and add communication standard label, then that photoelectric conversion module is transferred to be converted to optical signal is defeated
Go out.
Step 3：RU data sendings
Optical signals composite fiber (containing power cord) is sent to the optical port of EU by RU by optical port.
Step 4：EU data receivers
EU optical ports receive the optical signal from RU.
Step 5：EU data processings
The optical signal of reception is converted to electric signal by the photoelectric conversion module of EU, and data processing module processing is transferred to be formed
New data packet, while according to the communication standard label of data packet, new data packet is sent to the corresponding light of communication standard
Electric modular converter or ethernet module are sent to photoelectric conversion module and are then converted into optical signal after it receives data packet,
If being sent to ethernet module, Internet is transferred data to by ethernet module.
Step 6：EU data sendings
EU is by the optical port corresponding to the photoelectric conversion module selected according to data standard label, by optical signals light
Fibre is sent to MU optical ports.
Step 7：MU data receivers
MU optical ports receive the optical signal from EU.
Step 8：MU data processings
The optical signal of reception is converted to digital signal by MU by photoelectric conversion module, and the data processing module of MU is to data
After bag carries out data dissection process, radio-frequency module is sent to, is converted to radiofrequency signal.
Step 9：MU signals upload
Radiofrequency signal, coupled to base station/RRU, completes the transmission of a uplink signal by feeder line.
It is that a kind of optical fiber of multiple access for being adapted to carry out different location information source provided in an embodiment of the present invention divides with reference to figure 14
The flow chart of the communication means of distribution system.Wherein, the optical fiber distribution system includes multiple access units, connects each institute respectively
At least one far-end unit stated at least one expanding element of access unit and be connected with the expanding element, Mei Yisuo
State multiple communication standards that access unit supports different operators respectively；The described method includes：
Step S1501, downlink step：Each access unit is corresponding logical by the radiofrequency signal received addition
Corresponding each expanding element is sent to by optical fiber after letter standard label；The branch that each expanding element will receive
Hold the optical signal that multiple access units of different operators are sent be sent to by optical fiber after data processing it is corresponding every
One far-end unit；Each far-end unit handles the optical signal received to be converted into corresponding communication standard
Radiofrequency signal to be transmitted to user；
Step S1502, uplink step：The radiofrequency signal that each far-end unit RU emits the user received
It adds and corresponding expanding element is sent to by optical fiber after corresponding communication standard label；The expanding element is according to receiving
Communication standard label in optical signal will be sent to the access unit of the support communication standard after the optical signal prosessing received；
The access unit handles the optical signal received to be converted into the radiofrequency signal of corresponding communication standard to be sent to
Corresponding information source.
In conclusion the multiple access disclosed by the invention for realizing different location information source optical fiber distribution system and method by
The communication standard label of different operators is added in uplink/downlink data packet, and up/down line number is realized according to communication standard label
According to bag classification and orient forwarding or the communication standard number that uplink/downlink data packet is not supported filtered according to communication standard label
According to so as to which the access unit (MU) that different operators business is supported in access can be extended.Use the different location information source of the present invention
The optical fiber distribution system of multiple access one Operator Specific Service is covered to signal blind zone, it is necessary to other Operator Specific Services into
During row covering construction, it is only necessary to which the access unit of other Operator Specific Services is supported in extension access on original optical fiber distribution system
(MU), without adding whole set of system again, need not repeat to construct.Therefore it is significantly more efficient using existing resource, it saves
Operator's signal covering cost simultaneously reduces covering engineering construction difficulty.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (10)
1. a kind of optical fiber distribution system for the multiple access for realizing different location information source, which is characterized in that including multiple access units, divide
At least one distal end for not connecting at least one expanding element of each access unit and being connected with the expanding element
Unit, wherein, each access unit supports multiple communication standards of different operators respectively；
In the downlink, each access unit leads to after the radiofrequency signal received is added corresponding communication standard label
It crosses optical fiber and is sent to corresponding each expanding element；Each expanding element is by the support different operators received
The optical signal that multiple access units are sent is sent to corresponding each far-end unit after carrying out data processing by optical fiber；
Each far-end unit handles the optical signal received to be converted into the radiofrequency signal of corresponding communication standard to send out
It penetrates to user；Wherein, the processing of the optical signal received is included the optical signal received being converted into digital letter
Number, and the signal that the communication standard is corresponded in the digital signal is converted into the radiofrequency signal；
In the uplink, the corresponding communication of radiofrequency signal addition that each far-end unit RU emits the user received
Corresponding expanding element is sent to by optical fiber after standard label；Communication of the expanding element in the optical signal received
Standard label will be sent to the access unit of the support communication standard after the optical signal prosessing received；The access unit will
The optical signal received is handled to be converted into the radiofrequency signal of corresponding communication standard to be sent to corresponding information source.
2. the optical fiber distribution system of the multiple access of different location information source is realized as described in claim 1, which is characterized in that Mei Yisuo
Stating access unit includes multiple radio-frequency modules, data processing module and multiple photoelectric conversion modules；
Each described radio-frequency module corresponds to the radiofrequency signal for a communication standard for receiving same operator, and is converted into number
Signal is sent to the data processing module；And the digital signal for sending data processing module is converted into radiofrequency signal to send out
Give corresponding information source；
The data processing module is used for the radiofrequency signal digitized processing for receiving the radio-frequency module, and adds corresponding
Communication standard label is sent to each photoelectric conversion module after being packed into digital signal；And each photoelectricity is turned
After changing the mold the transformed digital signal dissection process of block, the communication standard label in the digital signal is sent to corresponding
Radio-frequency module；
Each photoelectric conversion module is correspondingly connected with an expanding element, for send the data processing module
Digital signal is converted into optical signal output；And the optical signal of input is converted into digital signal and is sent to the data processing mould
Block.
3. the optical fiber distribution system of the multiple access of different location information source is realized as described in claim 1, which is characterized in that Mei Yisuo
Stating expanding element includes multiple input photoelectric conversion module, data processing module and multiple output photoelectric modular converters；
Each input photoelectric conversion module is correspondingly connected with an access unit, for the optical signal of input to be converted into
The data processing module is sent to after digital signal；And the digital signal for sending the data processing module is converted into light
Signal is to export；
After the digital signal progress data processing that the data processing module sends each input photoelectric conversion module
It is sent to each output photoelectric modular converter；And the digital signal sent according to each output photoelectric modular converter
In communication standard label, be transmitted to the input photoelectric conversion module that is correspondingly connected with of access unit with supporting the communication standard；
The digital signal that the data processing module is sent is converted into optical signal with defeated by each output photoelectric modular converter
Go out；And the optical signal of input is converted into digital signal to be sent to the data processing module.
4. the optical fiber distribution system of the multiple access of different location information source is realized as described in claim 1, which is characterized in that Mei Yisuo
Stating expanding element includes multiple input photoelectric conversion module, data processing module, output photoelectric modular converter and optical branching/conjunction
Road module；
The data processing module is sent out after the digital signal that each input photoelectric conversion module is sent is carried out data processing
Give the output photoelectric modular converter；And according to the output photoelectric modular converter send digital signal in communication system
Formula label, by treated, digital signal is sent to and supports the input photoelectricity that the access unit of the communication standard is correspondingly connected with to turn
Change the mold block；
The digital signal all the way that the output photoelectric modular converter sends the data processing module is converted into optical signal all the way
To be sent to the optical branching/combining module；And the optical signal all the way of the optical branching/combining module input is converted into one
Railway digital signal is to be sent to the data processing module；
The optical branching/combining module is identical for the optical signal all the way of output photoelectric modular converter transmission to be divided into multichannel
Optical signal to export；And by the synthesis of the multipath light signal of input all the way optical signal to be sent to the photoelectric conversion module.
5. the optical fiber distribution system of the multiple access of different location information source is realized as claimed in claim 4, which is characterized in that the light
Branch/combining module includes an input optical port, N number of output optical port, 1*N wavelength division multiplexers and 1*N optical branching devices；
The downlink optical signal all the way of the input optical port input is divided into the identical optical signal in N roads by the 1*N optical branching devices, respectively
It is exported by N number of output optical port；
The 1*N wavelength division multiplexers will pass through after the N roads traveling optical signal synthesis of N number of output optical port input all the way optical signal
The input optical port output.
6. if claim 3~5 any one of them realizes the optical fiber distribution system of the multiple access of different location information source, feature exists
In each expanding element further includes ethernet module, and the ethernet module is used for access network based on ethernet data, the data
Processing module is additionally operable to handle the Ethernet data that the ethernet module is sent, and adds corresponding communication standard mark
The digital signal sent after label with each input photoelectric conversion module is sent to each output photoelectric modulus of conversion together
Block；
Each expanding element further includes monitoring module, for monitoring the work shape of other modules in the expanding element
State, and monitored results are sent to monitoring center；
Each expanding element further includes power extension module, and each far-end unit for being connected to the expanding element supplies
Electricity.
7. the optical fiber distribution system of the multiple access of different location information source is realized as described in claim 1, which is characterized in that the light
Fibre distribution system uses star-like networking, chrysanthemum type networking or mixed type networking.
8. the optical fiber distribution system of the multiple access of different location information source is realized as described in claim 1, which is characterized in that Mei Yisuo
Far-end unit is stated as single system structure, each far-end unit supports multiple communication standards of different operators respectively；It is each
The far-end unit includes photoelectric conversion module, data processing module and RF Amplifier Module；
The photoelectric conversion module is used to the optical signal of reception being converted into digital signal to be sent to the data processing module；
And the digital signal for sending the data processing module is converted into optical signal to export；
The data processing module handles the digital signal that the photoelectric conversion module is sent, and far-end unit is not supported
Communication standard data filtering, and the signal after filtering is sent to the RF Amplifier Module；And the radio frequency is put
The digital signal that big module is sent is sent to the photoelectric conversion module after adding corresponding communication standard label；
The signal that data processing module is sent is converted into radiofrequency signal and amplifies to be transmitted to user by the RF Amplifier Module；
And it is sent to the data processing module by digital signal is converted into after the radiofrequency signal amplification of the user received transmitting.
9. the optical fiber distribution system of the multiple access of different location information source is realized as described in claim 1, which is characterized in that Mei Yisuo
Far-end unit is stated as full system type pictorial structure, each far-end unit includes photoelectric conversion module, data processing module and multiple
RF Amplifier Module, each RF Amplifier Module support multiple communication standards of different operators respectively；
The data processing module handles the digital signal that the photoelectric conversion module is sent, and according in digital signal
Communication standard label, by treated, digital signal is sent to supports the RF Amplifier Module of the communication standard；And by institute
The photoelectric conversion module is sent to after stating the corresponding communication standard label of digital signal addition of RF Amplifier Module transmission；
The signal that data processing module is sent is converted into radiofrequency signal and amplifies to be transmitted to by each RF Amplifier Module
User；And it is sent to the data processing mould by digital signal is converted into after the radiofrequency signal amplification of the user received transmitting
Block.
10. a kind of communication means, in the optical fiber distribution system for the multiple access for being adapted to carry out different location information source, wherein, the light
Fibre distribution system includes multiple access units, at least one expanding element for connecting each access unit respectively, Yi Jiyu
At least one far-end unit of the expanding element connection, each access unit support the multiple logical of different operators respectively
Believe standard；It is characterized in that, the described method includes：
Downlink step：Each access unit leads to after the radiofrequency signal received is added corresponding communication standard label
It crosses optical fiber and is sent to corresponding each expanding element；Each expanding element is by the support different operators received
The optical signal that multiple access units are sent is sent to corresponding each far-end unit after carrying out data processing by optical fiber；
Each far-end unit handles the optical signal received to be converted into the radiofrequency signal of corresponding communication standard to send out
It penetrates to user；Wherein, the processing of the optical signal received is included the optical signal received being converted into digital letter
Number, and the signal that the communication standard is corresponded in the digital signal is converted into the radiofrequency signal；
Uplink step：The corresponding communication of radiofrequency signal addition that each far-end unit RU emits the user received
Corresponding expanding element is sent to by optical fiber after standard label；Communication of the expanding element in the optical signal received
Standard label will be sent to the access unit of the support communication standard after the optical signal prosessing received；The access unit will
The optical signal received is handled to be converted into the radiofrequency signal of corresponding communication standard to be sent to corresponding information source.
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