CN106454560A - Multi-business digital light distribution system and multi-business capacity scheduling method - Google Patents
Multi-business digital light distribution system and multi-business capacity scheduling method Download PDFInfo
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- CN106454560A CN106454560A CN201610521963.5A CN201610521963A CN106454560A CN 106454560 A CN106454560 A CN 106454560A CN 201610521963 A CN201610521963 A CN 201610521963A CN 106454560 A CN106454560 A CN 106454560A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
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Abstract
The invention discloses a multi-business digital light distribution system. The system comprises a near-end machine and a far-end machine, wherein in the near-end machine, a downlink signal entering the near-end machine and is processed, a signal is from a data interface and passes through an Ethernet processing unit, base-band CPRI framing for the downlink signal after processing and the signal from the data interface is carried out, the signals are then converted through a digital light module into light signals or are converted through a fiber or a microwave transceiving unit into microwave signals which are transmitted to the far-end machine; in the far-end machine, the light signals from the near-end machine are converted through the digital light module in the far-end machine into digital signals, the digital signals after CPRI deframing are converted into a base-band signal and an Ethernet signal, the Ethernet signal passes through an Ethernet processing unit and is transmitted through the data interface to other data terminal; the microwave signals from the near-end machine are converted through a microwave antenna in the far-end machine and the microwave reception unit into intermediate frequency signals which enter the digital signal processing unit and are converted into base-band signals after analog-digital conversion, the two types of base-band signals are converted into intermediate frequency signals through the digital signal processing unit, the intermediate frequency signals are then converted into radiofrequency signals through a frequency conversion unit, and the radiofrequency signals after downlink amplification enter a multiplex combiner and are emitted through the antenna.
Description
Technical field
The present invention relates to mobile communication and private network communication technology, more particularly, it relates to a kind of multi-service digital light distribution
System and multi-service capacity scheduling method.
Background technology
The fast development of mobile communication technology, has driven the explosive growth of mobile Internet and broadband data service, this
Bring challenge greatly to traditional network coverage and optimization.For example, existing single or two frequency band optical fiber repeater station equipment are used,
Would have in the coverage cell of multiband, multi-standard use multiple devices, cause cost increase, complexity raising is installed.As
Fruit uses the coverage mode of BBU (Baseband Unit, Base Band Unit)+RRU (Radio Remote Unit, far-end unit),
Single-frequency can only be supported owing to RRU (Radio Remote Unit, far-end unit) is substantially all, also cannot meet multifrequency, multi-standard
Needs, and due to overlay area use information source be not likely to be same main equipment producer, BBU (Baseband will be caused
Unit, Base Band Unit) cannot use, and then the overall enforcement covering scheme of impact.
In addition, the development of track traffic, high ferro, intercity, subway etc. are all carried forward vigorously in countries in the world in recent years, will become future
Primary selection for the short-distance trip of people.Due to spies such as the body speed of vehicle of track traffic are fast, car body shielding is big, road conditions are complicated
Point, greatly have impact on the communication quality of passenger, thus goes on business tourism trip, commercial affairs etc. and to cause very many inconvenience.Mirror
In the above-mentioned network complexity of track traffic, if according to traditional BBU (Baseband Unit, Base Band Unit)+RRU (Radio
Remote Unit, far-end unit) coverage mode, cover to reach multi-service, on the one hand, need substantial amounts of dissimilar
RRU (Radio Remote Unit, far-end unit) build, not only take up room big, invest higher, and upgrade and maintenance
Also extremely difficult, on the other hand, cell switching can be brought frequently, the shortcoming such as build a station intensive, and then frequent call drop.
Cover the problem existing, world's minority in order to solve moving communicating field set forth above and the multi-service of private network field
The stronger producer of strength has all carried out technical research, but the technical research of all producers also still rests on single communication
Field：
Such as patent of invention " the A Digital Capacity Centric that notification number is WO2014026005A1
Distributed Antenna System ", is leading with regard to mobile communication by Axell Wireless company's application in 2014
The numerical capacity integrated distribution formula antenna system in territory, although refer to only descending FM radiofrequency signal in its specification, but
Its implementation is not further described.The technical scheme of this patent of invention be use three-layer network framework include MTDI,
MSDH, RRU etc. realize that multiple frequency band signals covers, and its shortcoming is as follows：1st, MTDI have employed the corresponding difference of different types of equipment
Interface, such as RF MTDI, AUX MTDI, Digital MTDI, and different MTDI is linked into MSDH and is managed, and causes MTDI
Ratio is relatively decentralized, causes application inconvenience, take up room bigger in products application；2nd, whole overlay network uses three-tier architecture,
Products application is complicated, takes up room big, is especially not suitable for using high-power RRU to cover；3rd, MTDI does not support wireless
Accessing signal, applied environment is limited；4th, transparent data passage needs to use independent GateWay to realize, unrealized product is integrated
Change design；5th, the private network system of single downlink passage is not supported；6th, RRU is maximum supports 4 frequency ranges, when realizing MIMO, needs independence
Two RRU, be unfavorable for products application；7th, not supporting the covering of TDD signal, applied environment is limited.
Notification number be WO2013097199A1 patent of invention " clock-switching method, device and repeater as relaying
Indoor distributed system " is by the digital indoor distributed system with regard to moving communicating field of Comba company application in 2013.
The technical scheme of this patent of invention is also to use three-layer network framework to include that MAU, MEU, MRU etc. realize the covering of indoor signal,
But patent mainly says how to make to enter between MAU, MEU and MRU row clock to synchronize, and how shorter mention is to using these three part
Indoor are covered.According to its specification, analyzing in terms of in-door covering, shortcoming is as follows：1st, whole overlay network uses
Three-tier architecture, products application is complicated, takes up room big, is especially not suitable for using high-power RRU to cover；2nd, MAU is not
Supporting wireless access signal, 3rd, applied environment is limited does not support private network system；4th, the covering of TDD signal, applied environment are not supported
Limited.
Content of the invention
For the shortcoming of prior art, it is an object of the invention to provide a kind of multi-service digital light compartment system and many industry
Business capacity scheduling method, is existing complicated mobile communications network and private network communication network provides effective signal to cover.
To achieve these goals, the technical scheme of multi-service digital light compartment system of the present invention is：1 one kinds of multi-service numbers
Word light compartment system, including near-end machine and remote termination, in described near-end machine:Enter near-end machine downstream signal after treatment with
Carry out base band CPRI (Common Public Radio from data-interface and through the signal of Ethernet processing unit together
Interface, common public radio interface) framing, then become optical signal by digital light module and through optical fiber or pass through
Microwave transceiver unit becomes microwave signal transmission to remote termination；In described remote termination:From the optical signal of near-end machine through too far
Become data signal after digital light module in terminal, through CPRI (Common Public Radio Interface, general
Public wireless electrical interface) solve after frame and become baseband signal and ethernet signal, ethernet signal therein is through Ethernet process
After unit, transmit to other data terminals through data-interface；From the microwave signal of near-end machine through the microwave sky in remote termination
Become intermediate-freuqncy signal after line, Microwave transceiver unit, enter digital signal processing unit after analog to digital conversion, become baseband signal；
The two baseband signal any one in digital signal processing unit, become intermediate-freuqncy signal, become penetrating after converter unit
Frequently signal, after descending amplification, is launched signal by antenna after entering multiplexing's combiner and goes out, the radio frequency after descending amplification
Signal also enters feedback signal converting unit from a part of signal of output coupling, becomes feedback digital baseband signal, enters frequency
Spectrum display processing unit and frequency spectrum display interface.
As a modification of the present invention, in described near-end machine:The downstream signal of described entrance near-end machine is for passing through coupling
Radiofrequency signal or base station that the radiofrequency signal of clutch coupling or near-end machine antenna receive are direct by base station protocol interface
It is transferred to the baseband signal of the digital signal processing unit of near-end machine or the combination of aforementioned signal, described penetrating from base stations couple
Frequently signal enters the converter unit of near-end machine, and the radiofrequency signal that described near-end machine antenna receives enters Transmit-Receive Unit, and difference
Being processed as intermediate-freuqncy signal in converter unit and Transmit-Receive Unit, intermediate-freuqncy signal enters Digital Signal Processing list after interface board
Unit, digital signal processing unit becomes baseband signal to the intermediate-freuqncy signal entering after analog-to-digital conversion；The receipts of described near-end machine
Bill unit includes duplexer, up-downgoing amplifier section and frequency conversion part, and the coupler 1 of described near-end machine to N can be difference
The coupler of coupling grade, the corresponding different types of base station of base station protocol interface 1 to N, described near-end machine antenna 1 arrives N according to reality
Border operative scenario needs and selects, the duplexer in the Transmit-Receive Unit 11 of described near-end machine to 1N, N1 to NN, up-downgoing amplify and
Depending on converter unit is according to system operating frequency.
As a modification of the present invention, in described near-end machine：It described is transmitted directly to closely by base station protocol interface
The baseband signal of the digital signal processing unit of terminal or the base being obtained after treatment by the radiofrequency signal of base stations couple
Baseband signal that band signal or the radiofrequency signal being received by near-end machine antenna are obtained after treatment or three kinds of combinations
Baseband signal through frequency spectrum display processing unit, carry out FFT (Fast by after the data signal of data buffer storage to certain point number
Fourier Transformation, fast Flourier) conversion, time-domain signal is become frequency-region signal, becomes after smoothing through windowing
For spectrum signal, spectrum signal, through frequency spectrum display interface, is shown to the frequency spectrum needing frequency range to make of display or software
On the display terminal becoming.
As a modification of the present invention, in described remote termination：It is described by the optical signal of near-end machine is processed
Obtained from baseband signal, one part enters into this grade of remote termination and processes, and another part pass through remote termination optical fiber level
Connection processing unit delivers to next stage remote termination, it is achieved cascade between remote termination.
As a modification of the present invention, in described remote termination, described Microwave transceiver unit includes duplexer, up-downgoing
Amplify and frequency conversion part.
As a modification of the present invention, in described remote termination：Described baseband signal through frequency spectrum display processing unit,
By carrying out FFT (Fast Fourier Transformation, quick Fu after the data signal of data buffer storage to certain point number
Vertical leaf) conversion, time-domain signal is become frequency-region signal, after smoothing through windowing, becomes spectrum signal, spectrum signal shows through frequency spectrum
Show interface, the frequency spectrum needing frequency range is shown on the display terminal made by display or software.
As a modification of the present invention, in described remote termination：According to the size of radiofrequency signal bandwidth, wherein a certain
Road or multichannel pass through conjunction road through the radiofrequency signal of converter unit, are lowered into the radio frequency signal channels number of next stage to carry
More multiband.
As a modification of the present invention, in described remote termination：According to whether have MIMO (Multiple-input
More Multiple-output, enter and have more) channel characteristics, the radiofrequency signal after amplifying is respectively fed to the first multiplexing and is closed
Road device and second multiplexing's combiner, filter inter-modulated signal after the filtering of multiplexing's combiner and other disturb signal, by antenna or
The purpose reaching signal covering launched by leakage cable.
As a modification of the present invention, described near-end machine and remote termination are provided with the first power subsystem and respectively
Two power subsystems, the first power subsystem and second source unit are interconnected by interface board current-sharing, when normally working, and two power supply lists
Unit's mean allocation system power, when any one damages, switches to single power subsystem and powers.
As a modification of the present invention, in described remote termination：Described feedback digital baseband signal shows through frequency spectrum
Processing unit, by carrying out FFT (Fast Fourier after the data signal of data buffer storage to certain point number
Transformation, fast Flourier) conversion, time-domain signal is become frequency-region signal, after smoothing through windowing, becomes frequency spectrum letter
Number.Spectrum signal, through frequency spectrum display interface, is shown to the frequency spectrum needing frequency range the display made by display or software
In terminal.
The technical scheme of multi-service capacity scheduling method of the present invention is：A kind of multi-service capacity scheduling method, it include as
Lower step：(1) the operator's number according to each frequency range and the band bandwidth occupying respectively, set the up-downgoing of each frequency range
The number of channel and channel width；(2) initialization system uplink service judges thresholding；(3) to all MRRU (Multi-band Radio
Remote Unit, multiband far-end unit) all up channel power of each frequency range detect；(4) current power is judged
Whether value judges thresholding more than uplink service, if it is, forward step (5) to, otherwise, and corresponding MRRU (Multi-band
Radio Remote Unit, multiband far-end unit) the corresponding up channel of corresponding band and down channel yield value be set to 0；
(5) the up letter of correspondence of corresponding MRRU (Multi-band Radio Remote Unit, multiband far-end unit) corresponding band
Road and down channel yield value are set to 1；(6) all MRRU (Multi-band Radio Remote Unit, multiband far-end list
Unit) corresponding band corresponding up channel addition after be sent to D-OMU (Digital Optical Master Unit, digital light
Near-end unit).
Compared with prior art, beneficial effects of the present invention is：1st, two layer network architecture is used to realize that multi-band signal covers
Lid, device type is few, applies convenient；2nd, hardware compatibility base station RF interfaces of near-end machine (OMU), digital interface and nothing
Line interface, possesses extension light mouth, receives for carrying out remote base station data extending；3rd, kilomega network (WLAN) data are introduced
Transparent transmission function；4th, digital intermediate frequency (DSPU:Digital Signal Processing Unit) unit and frequency conversion (T/R) unit divide
From, support hot plug, any frequency range, the independent assortment of any standard can be realized as required；5th, remote termination (ORU) is the highest can
Support 8 frequency ranges, support radio frequency to close road output and each frequency range individually exports, the MIMO needs of current LTE system can be met；
6th, near-end power unit uses dual power supply, can support redundancy handoff functionality, it is achieved after wherein a certain road abnormity of power supply, be
System power supply can continue normally to work, and improves reliability；7th, private network communication signal is supported；8th, the conjunction of TDD signal and FDD signal is supported
Road exports；9th, microwave transmission is supported；10th, there is spectrum display function；11st, there is capacity scheduling function.
Brief description
Below in conjunction with the accompanying drawings and detailed description of the invention, the structure and Advantageous Effects thereof of the present invention is carried out specifically
Bright.
Fig. 1 is the near-end machine composition frame chart of multi-service digital light compartment system of the present invention；
Fig. 2 is the remote termination composition frame chart of multi-service digital light compartment system of the present invention；
Fig. 3 is the Transmit-Receive Unit circuit theory diagrams of near-end machine；
Fig. 4 is the converter unit circuit theory diagrams (TDD standard) of near-end machine；
Fig. 5 is the Microwave transceiver unit circuit theory diagrams of near-end machine；
Fig. 6 is the converter unit circuit theory diagrams (private network, single downlink) of remote termination；
Fig. 7 is the converter unit circuit theory diagrams (TDD＆FDD) of remote termination；
Fig. 8 is up-downgoing amplifying unit circuit theory diagrams (TDD) of remote termination；
Fig. 9 is feedback signal conversion unit circuit schematic diagram；
Figure 10 is frequency spectrum display processing unit circuit theory diagrams；
Figure 11 is frequency spectrum display instance graph；
Figure 12 is multi-service capacity scheduling method FB(flow block) of the present invention；
Figure 13 is 700MHz LTE frequency band capability scheduling schematic diagram.
Detailed description of the invention
In order to make goal of the invention, technical scheme and the Advantageous Effects thereof of the present invention become apparent from, below in conjunction with accompanying drawing
And detailed description of the invention, the present invention is further elaborated.It should be appreciated that the concrete reality described in this specification
The mode of executing is only used to explain the present invention, is not intended to limit the present invention.
Referring to Fig. 1 to 11, the near-end machine of multi-service digital light compartment system of the present invention includes：Near-end machine antenna 1 ... N,
Near-end machine microwave antenna, Transmit-Receive Unit 11 ... 1N, Transmit-Receive Unit N1 ... NN, coupler 1 ... N, converter unit 1 ... N, interface board,
Power subsystem the 1st, power subsystem the 2nd, monitoring unit, digital signal processing unit, Ethernet processing unit, data-interface the 1st, data connect
The parts such as mouth the 2nd, Microwave transceiver unit, near-end machine optical fiber cascade processing unit, frequency spectrum display processing unit, frequency spectrum display interface；
Remote termination includes：Remote termination microwave antenna, Microwave transceiver unit, Ethernet processing unit, digital signal processing unit, remote termination
Optical fiber cascade processing unit, interface board, power subsystem the 1st, power subsystem the 2nd, monitoring unit, converter unit 1 ... N, data-interface are the 1st,
Data-interface the 2nd, up-downgoing amplifies 1 ... N, multiplexing's combiner the 1st, multiplexing's combiner the 2nd, antenna, mimo antenna, frequency spectrum display process single
Unit, frequency spectrum display interface, feedback signal converting unit 1 ... the parts such as N.
Respectively enter converter unit from the downlink radio-frequency signal that base stations couple or near-end machine antenna receive and transmitting-receiving is single
After Yuan, become intermediate-freuqncy signal, after interface board, enter digital signal processing unit, during digital signal processing unit is to entering
Frequently signal becomes baseband signal after analog-to-digital conversion, and this baseband signal, with from data-interface 1 and data-interface 2, and is passed through
Signal after Ethernet processing unit carries out base band CPRI framing together, by digital light module become optical signal through optical fiber or
Become microwave signal transmission by Microwave transceiver unit to go out.The second approach, it is simply that base station by with Digital Signal Processing list
Base station protocol interface between Yuan, is transferred directly to digital signal processing unit, Digital Signal Processing the baseband signal of base station
Unit is after the parsing of base station baseband signal message, and from data-interface 1 and data-interface 2, and through Ethernet processing unit
After signal carry out base band CPRI framing together, by digital light module become optical signal through optical fiber or pass through microwave transmitting and receiving list
Unit becomes microwave signal transmission and goes out.Or the third approach, it is simply that base band after base station protocol interface resolves for the part
The signal that signal and a part are converted to base band through the radiofrequency signal that base stations couple or near-end machine antenna receive is combined in one
Rise and from data-interface 1 and data-interface 2, and the signal after Ethernet processing unit carries out base band CPRI group together
Frame, becomes optical signal by digital light module and through optical fiber or becomes microwave signal transmission by Microwave transceiver unit and go out.Far
The optical signal that terminal receives from near-end machine optical fiber becomes data signal after digital light module, solves through CPRI and becomes after frame
Baseband signal and ethernet signal, wherein ethernet signal is after Ethernet processing unit, data penetration transmission to FPDP 1
With FPDP 2.Or after remote termination microwave antenna and Microwave transceiver unit, become intermediate-freuqncy signal, enter at data signal
Reason unit becomes baseband signal after analog to digital conversion.Baseband signal becomes intermediate-freuqncy signal, warp in digital signal processing unit
Become radiofrequency signal after crossing converter unit, after descending amplification, sent out by antenna or mimo antenna after entering multiplexing's combiner
Penetrate signal to go out.
For the upward signal receiving from antenna or leakage cable, through the process almost like with downstream signal, at far-end
Machine becomes optical signal or microwave signal upstream radio-frequency signal, and in near-end machine, optical signal or microwave signal is become
Radiofrequency signal, thus realize the reception processing process of upward signal.
The process of signal transmission process of present system is presented herein below：
Step 1：
The downstream signal entering near-end machine may be from three below aspect：
(1) directly couple base station radio-frequency signal by coupler, after converter unit, become intermediate-freuqncy signal；
(2), after receiving radiofrequency signal by near-end machine antenna, the intermediate frequency letter obtaining relative clean is processed through Transmit-Receive Unit
Number, this receiving unit includes duplexer, up-downgoing amplifier section and frequency conversion part.
(3) base station is communicated with the base station protocol interface in near-end machine digital signal processing unit by base-station interface,
After resolving, obtain downgoing baseband signal.
When implementing, coupler 1 ... N can use 30dB/40dB/50dB or the coupling of other different coupling grades
Device, base-station interface 1 ... N is relevant with base station type, different types of base station, base-station interface can be different, and corresponding base station is assisted
View interface 1 ... N is also corresponding to be changed, wherein transmission medium can be optical fiber also can be netting twine etc..Near-end machine antenna 1 ... N is permissible
Need according to real work scene and select.Transmit-Receive Unit 11 ... 1N, N1 ... duplexer in NN, up-downgoing amplification and frequency conversion list
Depending on unit is according to system operating frequency.
Step 2：
Intermediate-freuqncy signal in step 1, filters out its mirror through near-end machine converter unit or Transmit-Receive Unit filters internal
As interference, thus the intermediate-freuqncy signal that output is purer.When implementing, wave filter can use L, C discrete devices design or
Person uses special integrated device to design, and IF-FRE can be actually needed adjustment according to system, and in the present invention, IF-FRE is selected
It for 184.32MHz, but is not limited to this frequency.
Step 3：
To intermediate-freuqncy signal relatively purer in step 2, after interface board switching, enter digital signal processing unit, based on
The theory of software radio, main digital signal processing unit to this intermediate-freuqncy signal according to certain sample rate through A/D device handle
This signal becomes data signal.When implementing, A/D device can be selected for double channel A/D device or single channel A/D device, adopts
Sample rate can adjust according to IF-FRE and bandwidth relationship, and in the present invention, sample rate is chosen to be 491.52MSPS, but is not limited to
This sample rate.
Step 4：
The baseband signal warp of (3rd) aspect in the data signal of the digital signal processing unit in step 3 or step 1
Cross frequency spectrum display processing unit, first pass through data buffer storage to after the data signal of certain point number, then through FFT, by time domain
Signal becomes frequency-region signal, after windowing is smooth, becomes spectrum signal.When implementing, the data signal of certain point number can
With according to system unrestricted choice, present invention determine that to be 16384, but be not limited to this and count.Windowing can add rectangular window, Hanning window
Deng, but it is not limited to the type window function.
Step 5：
Spectrum signal in step 4, through frequency spectrum display interface, is shown to the frequency spectrum needing frequency range in terminal.Concrete real
Now, this frequency spectrum is aobvious is that interface can be a display or use software GUI to show, meanwhile, needs to add based on this frequency
Spectrum display or software GUI carry out the function that frequency spectrum display adjusts, as adjusted spectral resolution, adjusting spectral bandwidth, adjustment
The functions such as spectrum amplitude.
Step 6：
In step 3 (3rd) aspect in the data signal of digital signal processing unit or step 1 baseband signal with come
The data signal recovered after Ethernet processing unit from the signal of data-interface 1 and data-interface 2, carries out CPRI group together
Frame, become the baseband signal of serial high data rate become after the conversion of digital light module optical signal send through main fiber or
Sent by microwave antenna after Microwave transceiver unit.When implementing, from the signal speed of data-interface 1 and data-interface 2
Rate can be 10M, 100M or 1000M, and signal can be signal of communication such as WIFI；Traffic spike such as image, video
Etc..The data-interface number present invention is 2, but is not limited to this number.CPRI Framed Data speed can be according to the actual need of system
Want and adjust, the present invention is chosen to be 10Gbps, but is not limited to this speed；Special chip can be used during concrete framing or show
Field programmable logical device (FPGA) or DSP realize.In addition, the data signal in digital signal processing unit can be step
In 1 three aspects either side signal or wherein any combination and come signal.
Step 7：
The fiber-optic signal obtaining from step 6 or microwave signal, to far after long-distance optical fiber transmission or microwave transmission
Terminal optical fiber port or microwave antenna；When implementing, this distance can use 1km, 5km, 10km, 20km, 40km or 80km
Deng.The present invention uses 20km, but is not limited to this milimeter number, and microwave frequency band can select any frequency range of more than 3GHz, the present invention
Use 60GHz.
Step 8：
Optical signal in step 7, enters the digital signal processing unit of remote termination through nearly distal fiber protocol interface.Warp
After crossing CPRI solution frame, digital signal processing unit obtains baseband digital signal and Ethernet data transparent transmission signal, Ethernet data
Transparent transmission signal, after Ethernet processing unit, transmits to other data terminals through data-interface 1 and data-interface 2.Base band
Data signal is partly into this grade of remote termination and processes, and a part is delivered to down by remote termination optical fiber cascade processing unit
One-level remote termination, it is achieved cascade between remote termination.When implementing, the signal rate of transmission to data-interface 1 and data-interface 2
Can be 10M, 100M or 1000M, and signal can be signal of communication such as WIFI, traffic spike such as image, video etc.
Deng the data-interface number present invention is 2, but is not limited to this number.Near and remote machine fiber optic protocols interface 1 ... N and remote termination optical fiber
The R21 of concatenation unit ... R2N, the quantity of employing, depending on concrete application scenarios, the present invention is 2, but is not limited to this number
Mesh.
Step 9：
Remote termination obtains the mode of baseband digital signal in addition to the signal that in step 8, proximally machine Optical Fiber Transmission is come, also
Can obtain from remote termination microwave antenna.Detailed process is after remote termination microwave antenna receives spacing wave, through microwave transmitting and receiving
Cell processing obtains the radiofrequency signal of relative clean, and this Microwave transceiver unit includes duplexer, up-downgoing amplification and frequency conversion part.
When implementing, remote termination microwave antenna can need according to real work scene and select.Duplexer, up-downgoing amplify and become
Depending on frequency part is according to system operating frequency, frequency conversion part mainly realizes that radiofrequency signal becomes intermediate-freuqncy signal, and the present invention uses
184.32MHz, but it is not limited to this frequency.
Step 10：
Intermediate-freuqncy signal in step 9 enters digital signal processing unit, based on the theory of software radio, at data signal
Reason unit becomes data signal through A/D device this signal according to certain sample rate to this intermediate-freuqncy signal.When implementing,
A/D device can be selected for double channel A/D device or single channel A/D device, and sample rate can be according to IF-FRE and bandwidth relationship
And adjust, in the present invention, sample rate is chosen to be 491.52MSPS, but is not limited to this sample rate.
Step 11：
Data signal in step 8 or step 10, through frequency spectrum display processing unit, first passes through data buffer storage to necessarily
After the data signal counted, then through FFT, time-domain signal is become frequency-region signal, after windowing is smooth, become frequency spectrum
Signal.When implementing, the data signal of certain point number can present invention determine that to be 16384 according to system unrestricted choice, but
It is not limited to this to count.Windowing can add rectangular window, Hanning window etc., but is not limited to the type window function.
Step 12：
Spectrum signal in step 11, through frequency spectrum display interface, is shown to the frequency spectrum needing frequency range in terminal.Specifically
When realizing, this frequency spectrum is aobvious is that interface can be a display or use software GUI to show, meanwhile, needs to add based on this
Spectrum display or software GUI carry out the function that frequency spectrum display adjusts, as adjusted spectral resolution, adjusting spectral bandwidth, tune
The functions such as whole spectrum amplitude.
Step 13：
Data signal in step 8 or step 10, through digital signal processing unit, after carrying out digital-to-analogue conversion, becomes
Frequently signal, enters converter unit, reverts to radiofrequency signal.When implementing, this IF-FRE is actually needed according to system and sets
Fixed, the present invention is set to 138.24MHz, but is not limited to this frequency, in addition, during actual application, can be according to radiofrequency signal bandwidth
Size, wherein a certain road or multichannel through the radiofrequency signal of converter unit through closing road, be lowered into penetrating of next stage
Channel frequency signal number, to carry more multiband.
Step 14：
Radiofrequency signal in step 13, after up-downgoing amplifier section, becomes the radiofrequency signal after power amplification.Specifically
When realizing, downstream amplifier primarily serves the effect that power linear amplifies, and can use A/AB class power amplifier or Doherty work(
Put or DPD MCPA/APD MCPA/FF MCPA etc., but be not limited to the power amplifier of these technology.Simultaneously can basis
Radiofrequency signal spacing size after converter unit, use the input of up-downgoing amplifier section Linear Amplifer a road or
Multi-channel rf signal.
Step 15：
The radiofrequency signal after power linear amplifies in step 14, enters feedback from a part of signal of output coupling
Signal conversion unit, passes through and step 1 and step 3 similar process, radiofrequency signal is converted to data signal.Implement process
In, coupler size, IF-FRE select and the size of sample rate is identical from the numerical value in step 1 and step 3 or different.
Step 16：
Data signal in step 15 is through the process identical with step 11, step 12, it is achieved the signal after Linear Amplifer
Frequency spectrum shows.Thus realize showing the frequency spectrum of remote termination output downstream signal.
Step 17：
The radiofrequency signal after power linear amplifies in step 14, according to whether have MIMO channel characteristics, letter
Number be respectively fed to multiplexing's combiner 1 and multiplexing's combiner 2, after the filtering of multiplexing's combiner, filter inter-modulated signal and other
Interference signal, is launched by antenna or leakage cable, reaches the purpose that signal covers.When implementing, multiplexing's combiner uses chamber
Body filtering realizes, but is not limited to use this technology, in addition, for the conjunction road reaching TDD signal, wherein there may be one or
Multiple channel filter.
Step 18：
Above step 1-17 completes the whole process that downlink radio-frequency signal is accessed to remote termination output by near-end machine, and right
It in upward signal, is after remote termination antenna or leakage cable receive upstream radio-frequency signal, through being similar to the process of step 1-17, complete
Become the whole process from remote termination to near-end machine for the upward signal, repeat no more here, but the protection of know-why is effective equally.
In addition, three aspect signals in step 1 can determine according to application scenarios, can be to use an aspect
Signal, it is also possible to be any combination signal；Remote termination data signal in step 8 and step 10, system can be according to actual needs
The signal that the signal chosen near-end machine Optical Fiber Transmission and come or remote termination microwave antenna receive；Near-end machine and remote termination power supply list
Unit 1 and power subsystem 2 interconnected by interface board, between use equal Flow Technique, when normally working, two power subsystem mean allocation
System power, when any one damages, automatically switches to single power subsystem and powers；The BS_1N of near-end machine, BS_2N, transmitting-receiving
Unit 1N, Transmit-Receive Unit NN, converter unit N, base station protocol interface N, near and remote machine optical fiber interface agreement N, near-end machine optical fiber level
MN in receipts or other documents in duplicate unit.Nearly distal fiber protocol interface 1 in remote termination ... N, remote termination optical fiber concatenation unit R21 ... R2N, frequency conversion
Unit 1 ... N, up-downgoing amplify 1 ... N.Feedback signal converting unit 1 ... N, N therein represents from the 1st, the 2nd, 3 ... N, concrete N numerical value
Size, when being designed by concrete system determine；The power subsystem of near-end machine and remote termination and monitoring unit can be according to actual systems
System design, unrestricted choice number combinations.As only selected 1 power subsystem or must not monitoring unit etc.；When near-end machine and far-end
When machine uses microwave antenna to be transmitted, it is necessary to assure near-end machine, when CPRI framing, inserts synchronizing signal, and at remote termination
When CPRI solves frame, recover synchronizing signal, thus ensure to synchronize between near and remote machine；Step 4/ step 5, step 11/ step 12,
The frequency spectrum of step 15/ step 16 shows both can show uplink spectrum, it is also possible to be downstream spectrum, it is also possible to be uplink downlink
Frequency spectrum all comprises.
Referring to Figure 12, multi-service capacity scheduling method of the present invention comprises the steps：(1) operation according to each frequency range
Quotient mesh and the band bandwidth occupying respectively, set the up-downgoing number of channel and the channel width of each frequency range；(2) initialization system
Uplink service judges thresholding；(3) all up channel power of all each frequency ranges of MRRU are detected；(4) judge currently
Whether performance number judges thresholding more than uplink service, if it is, forward step (5) to, otherwise, and corresponding MRRU corresponding band right
Up channel and down channel yield value is answered to be set to 0；(5) corresponding up channel and the down channel of corresponding MRRU corresponding band increases
Benefit value is set to 1；(6) the corresponding up channel of all MRRU corresponding band is sent to D-OMU after being added.
Refer to Figure 13, for utilizing multi-service capacity scheduling method to dispatch 700MHz LTE frequency band capability, wherein,
FIFO：(First in First output)；DDC(Digital Down Convert)；FIR(Finite Impulse
Response).
The announcement of book and teaching according to the above description, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula carries out suitable change and modification.Therefore, the invention is not limited in detailed description of the invention disclosed and described above, to this
Some modifications and changes of invention should also be as falling in the scope of the claims of the present invention.Although additionally, this specification
In employ some specific terms, but these terms are merely for convenience of description, do not constitute any restriction to the present invention.
Claims (11)
1. a multi-service digital light compartment system, including near-end machine and remote termination, it is characterised in that
In described near-end machine:Enter near-end machine downstream signal after treatment with from data-interface and through Ethernet process
The signal of unit carries out base band CPRI framing together, then becomes optical signal by digital light module and through optical fiber or passes through microwave
Transmit-Receive Unit becomes microwave signal transmission to remote termination；
In described remote termination:Optical signal from near-end machine becomes data signal after the digital light module in remote termination,
Solve after frame through CPRI and become baseband signal and ethernet signal, ethernet signal therein after Ethernet processing unit,
Transmit to other data terminals through data-interface；From the microwave signal of near-end machine through the microwave antenna in remote termination, microwave
Become intermediate-freuqncy signal after Transmit-Receive Unit, enter digital signal processing unit after analog to digital conversion, become baseband signal；Described two
Any one becomes intermediate-freuqncy signal in digital signal processing unit to plant baseband signal, becomes radio frequency letter after converter unit
Number, after descending amplification, after entering multiplexing's combiner, antenna is launched signal and go out, the radiofrequency signal after descending amplification
Also enter feedback signal converting unit from a part of signal of output coupling, become feedback digital baseband signal, enter frequency spectrum and show
Show processing unit and frequency spectrum display interface.
2. multi-service digital light compartment system according to claim 1, it is characterised in that in described near-end machine:Described
Enter radiofrequency signal that the downstream signal of near-end machine received for the radiofrequency signal that coupled by coupler or near-end machine antenna,
Or base station is transmitted directly to the baseband signal of the digital signal processing unit of near-end machine or aforementioned by base station protocol interface
The combination of signal, the described converter unit entering near-end machine from the radiofrequency signal of base stations couple, described near-end machine antenna receives
Radiofrequency signal enter Transmit-Receive Unit, and in converter unit and Transmit-Receive Unit, be processed as intermediate-freuqncy signal, intermediate-freuqncy signal warp respectively
Cross and enter digital signal processing unit after interface board, digital signal processing unit to the intermediate-freuqncy signal entering after analog-to-digital conversion
Become baseband signal；The Transmit-Receive Unit of described near-end machine includes duplexer, up-downgoing amplifier section and frequency conversion part, described closely
The coupler 1 of terminal can be the coupler of difference coupling grade, the corresponding different types of base of base station protocol interface 1 to N to N
Standing, described near-end machine antenna 1 to N needs according to real work scene and selects, and the Transmit-Receive Unit 11 of described near-end machine arrives 1N, N1
Depending on duplexer in NN, up-downgoing amplification and converter unit are according to system operating frequency.
3. multi-service digital light compartment system according to claim 2, it is characterised in that in described near-end machine：Described
It is transmitted directly to the baseband signal of the digital signal processing unit of near-end machine by base station protocol interface or pass through base stations couple
The baseband signal that obtains after treatment of radiofrequency signal or the radiofrequency signal that received by near-end machine antenna after treatment
The baseband signal of the baseband signal obtaining or three kinds of combinations is through frequency spectrum display processing unit, by data buffer storage to necessarily
Carry out FFT after the data signal counted, time-domain signal become frequency-region signal, after smoothing through windowing, become spectrum signal,
Spectrum signal, through frequency spectrum display interface, is shown to the frequency spectrum needing frequency range the display terminal made by display or software
On.
4. multi-service digital light compartment system according to claim 1, it is characterised in that in described remote termination：Described
By baseband signal obtained from processing the optical signal of near-end machine, one part enters at this grade of remote termination
Reason, and another part delivers to next stage remote termination by remote termination optical fiber cascade processing unit, it is achieved cascade between remote termination.
5. multi-service digital light compartment system according to claim 1, it is characterised in that in described remote termination, described
Microwave transceiver unit includes duplexer, up-downgoing amplification and frequency conversion part.
6. multi-service digital light compartment system according to claim 1, it is characterised in that in described remote termination：Described
Baseband signal is through frequency spectrum display processing unit, by carrying out FFT after the data signal of data buffer storage to certain point number, and will
Time-domain signal becomes frequency-region signal, becomes spectrum signal after smoothing through windowing, and spectrum signal is through frequency spectrum display interface, needs
The frequency spectrum of frequency range is shown on the display terminal made by display or software.
7. multi-service digital light compartment system according to claim 1, it is characterised in that in described remote termination：According to
The size of radiofrequency signal bandwidth, wherein a certain road or multichannel through the radiofrequency signal of converter unit through closing road, reduce into
Enter the radio frequency signal channels number of next stage to carry more multiband.
8. multi-service digital light compartment system according to claim 1, it is characterised in that in described remote termination：According to
Whether having MIMO channel characteristics, the radiofrequency signal after amplifying is respectively fed to first multiplexing's combiner and the second multiplexing
Combiner, filters inter-modulated signal after the filtering of multiplexing's combiner and other disturb signal, is launched by antenna or leakage cable and reaches
The purpose covering to signal.
9. multi-service digital light compartment system according to claim 1, it is characterised in that at described near-end machine and remote termination
In be provided with the first power subsystem and second source unit respectively, the first power subsystem and second source unit are equal by interface board
Stream interconnection, when normally working, two power subsystem mean allocation system powers, when any one damages, switch to single electricity
Source unit is powered.
10. multi-service digital light compartment system according to claim 1, it is characterised in that in described remote termination：Described
Feedback digital baseband signal, through frequency spectrum display processing unit, is carried out by after the data signal of data buffer storage to certain point number
Time-domain signal is become frequency-region signal by FFT, becomes spectrum signal after smoothing through windowing.Spectrum signal shows through frequency spectrum
Interface, is shown to the frequency spectrum needing frequency range on the display terminal made by display or software.
11. 1 kinds of multi-service capacity scheduling methods, utilize the multi-service digital light compartment system of claim 1 to 10 to carry out signal
Cover, it is characterised in that it comprises the steps：
(1) the operator's number according to each frequency range and the band bandwidth occupying respectively, sets the up-downgoing letter of each frequency range
Number of channels and channel width；
(2) initialization system uplink service judges thresholding；
(3) all up channel power of all each frequency ranges of MRRU are detected；
(4) judge whether current power value judges thresholding, if it is, forward step (5) to, otherwise, accordingly more than uplink service
The corresponding up channel of MRRU corresponding band and down channel yield value are set to 0；
(5) corresponding up channel and the down channel yield value of corresponding MRRU corresponding band is set to 1；
(6) the corresponding up channel of all MRRU corresponding band is sent to D-OMU after being added.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610521963.5A CN106454560A (en) | 2016-07-05 | 2016-07-05 | Multi-business digital light distribution system and multi-business capacity scheduling method |
| TW106106690A TW201803296A (en) | 2016-07-05 | 2017-03-01 | Multi-business digital light distribution system and multi-business capacity scheduling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610521963.5A CN106454560A (en) | 2016-07-05 | 2016-07-05 | Multi-business digital light distribution system and multi-business capacity scheduling method |
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| Publication Number | Publication Date |
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| CN106454560A true CN106454560A (en) | 2017-02-22 |
Family
ID=58183530
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610521963.5A Pending CN106454560A (en) | 2016-07-05 | 2016-07-05 | Multi-business digital light distribution system and multi-business capacity scheduling method |
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| CN (1) | CN106454560A (en) |
| TW (1) | TW201803296A (en) |
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| CN109412633A (en) * | 2018-09-28 | 2019-03-01 | 广州开信通讯系统有限公司 | Communication equipment and repeater |
| CN109618412A (en) * | 2019-01-23 | 2019-04-12 | 广州开信通讯系统有限公司 | New digital optical fiber distribution system towards 5G and the method that capacity scheduling is carried out to downlink, uplink using the system |
| CN109729558A (en) * | 2017-10-27 | 2019-05-07 | 中国电信股份有限公司 | Residence reselecting, system and terminal in multifrequency networking |
| CN110048777A (en) * | 2019-03-29 | 2019-07-23 | 广州开信通讯系统有限公司 | Digital light compartment system, capacity scheduling method and device |
| CN110072243A (en) * | 2019-04-26 | 2019-07-30 | 嘉兴思睿通信科技有限公司 | A kind of method and system enhancing 5G mobile broadband covering scene |
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2016
- 2016-07-05 CN CN201610521963.5A patent/CN106454560A/en active Pending
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- 2017-03-01 TW TW106106690A patent/TW201803296A/en unknown
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| CN109729558A (en) * | 2017-10-27 | 2019-05-07 | 中国电信股份有限公司 | Residence reselecting, system and terminal in multifrequency networking |
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| CN110048777A (en) * | 2019-03-29 | 2019-07-23 | 广州开信通讯系统有限公司 | Digital light compartment system, capacity scheduling method and device |
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| CN111918154A (en) * | 2019-05-08 | 2020-11-10 | 华为技术有限公司 | Network device and terminal device |
| CN110850239A (en) * | 2019-11-01 | 2020-02-28 | 索亮 | Leaky cable on-line monitoring method and device based on SDR platform and storage medium |
| CN112564806A (en) * | 2020-12-18 | 2021-03-26 | 京信网络系统股份有限公司 | Multichannel radio frequency transmitting and receiving device and method |
| CN112564806B (en) * | 2020-12-18 | 2021-09-28 | 京信网络系统股份有限公司 | Multichannel radio frequency transmitting and receiving device and method |
| CN113726364A (en) * | 2021-09-01 | 2021-11-30 | 广州开信通讯系统有限公司 | Far-end device of multi-band signal receiving and transmitting system, multi-band signal receiving and transmitting system and power consumption metering method |
| CN113726364B (en) * | 2021-09-01 | 2022-09-13 | 广州开信通讯系统有限公司 | Far-end device of multi-band signal receiving and transmitting system, multi-band signal receiving and transmitting system and power consumption metering method |
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| CN114466470A (en) * | 2021-12-27 | 2022-05-10 | 华为技术有限公司 | Signal processing apparatus and data transmission method |
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