CN105406917B - A kind of full warm back-up digital processing and light distribution system - Google Patents
A kind of full warm back-up digital processing and light distribution system Download PDFInfo
- Publication number
- CN105406917B CN105406917B CN201510644867.5A CN201510644867A CN105406917B CN 105406917 B CN105406917 B CN 105406917B CN 201510644867 A CN201510644867 A CN 201510644867A CN 105406917 B CN105406917 B CN 105406917B
- Authority
- CN
- China
- Prior art keywords
- remote termination
- end machine
- unit
- processing unit
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012545 processing Methods 0.000 title claims abstract description 140
- 239000013307 optical fiber Substances 0.000 claims description 33
- 230000003287 optical effect Effects 0.000 claims description 17
- 238000001514 detection method Methods 0.000 claims description 15
- 238000006243 chemical reaction Methods 0.000 claims description 13
- 238000009432 framing Methods 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 10
- 230000008859 change Effects 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 3
- 230000035515 penetration Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 2
- 230000009466 transformation Effects 0.000 claims 1
- 238000004891 communication Methods 0.000 abstract description 15
- 238000010295 mobile communication Methods 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 19
- 239000000835 fiber Substances 0.000 description 18
- 238000013461 design Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 230000006855 networking Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000003321 amplification Effects 0.000 description 5
- 238000003199 nucleic acid amplification method Methods 0.000 description 5
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 239000005574 MCPA Substances 0.000 description 3
- WHKUVVPPKQRRBV-UHFFFAOYSA-N Trasan Chemical compound CC1=CC(Cl)=CC=C1OCC(O)=O WHKUVVPPKQRRBV-UHFFFAOYSA-N 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 3
- 206010033799 Paralysis Diseases 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
Abstract
The invention discloses a kind of full warm back-up digital processing and light distribution systems, including near-end machine and remote termination.The full warm back-up digital processing of the present invention and light distribution system overcome the not high disadvantage of existing backup digital light compartment system reliability, extend the application range of full backup digital light compartment system, requirement when not only meeting the requirement of high reliability in existing mobile communication and private network communication network, and meeting future communications network Joint construction and sharing to multi-frequency-band digital light distribution system.Therefore one kind proposed by the invention completely new full warm back-up digital processing and light distribution system has boundless application prospect in the higher communication network application of reliability requirement.
Description
Technical field
The present invention relates to the reliability transmissions of mobile communication and private network communication, more specifically to a kind of full warm back-up
Digital processing and light distribution system.
Background technique
In recent years, digital light compartment system by its networking capability is strong, covering power is strong, noise is low, it is low in energy consumption, facilitate tune
Examination, the features such as failure rate is low, have obtained large-scale promotion and application in mobile communication field.But it is brought for manufacturer
Also new problem is brought while abundant profit.Since the reliability of existing digital light compartment system is not generally high, can not keep away
There is equipment damage with exempting from, lead to overlay area communication paralysis, repaired this requires manufacturer must be on the scene at the first time,
Cause equipment later maintenance cost to increase considerably, especially to the very high occasion of communication coverage requirements, can not apply at all.
In addition, in private network communication field, such as the fields such as railway, fire-fighting, public security, it can be more stringent to reliability requirement, existing number
Light distribution system is unable to satisfy its requirement at all.
In order to improve the reliability of digital fiber compartment system, application No. is 201310531167.6 patents of invention to disclose
A kind of " railway GSM-R digital optical fiber repeater station and its working method of high reliability ", it switches by using principal and subordinate road
Method improves system reliability to realize that device link backs up.This method disadvantage is as follows: (1) near-end machine is using coupling base station letter
Number method, it is higher to base station reliability requirement, when coupling base station signal when something goes wrong, cause entire digital fiber directly to be put
Overlay network of standing paralysis.(2) near-end machine duplexer and combiner device use built-in method, when using Dual base stations scheme in networking
When, it can not realize that two stylobate stations are accessed from a near-end machine simultaneously.Must use two near-end machines, improve system group network at
This.(3) near-end machine and remote termination are using two optical fiber parallel connection modes, when main road optical fiber breaks down, it is necessary to which the whole network is cut
Backup optical fiber is shifted to, can not realize cell level backup switching, and using the form of switching, system reliability degree has
Limit.(4) emitted after main PA is combined with backup PA by electric bridge by electric bridge in remote termination by antenna, due to the non-linear mistake of main PA
Very, necessarily cause interference of the intermodulation to other communications bands that can not make especially when other frequency ranges and GSM-R frequency range coexist
With.(5) leakage cable detection module realizes leakage cable detection by being followed by leakage cable with main PA combining after triplexer, when needing dual-port to leak
When cable detects, which be cannot achieve.
In order to overcome foregoing invention patent disadvantage itself, in combination with mobile communication and private network communication field to reliable communications
The requirement of property, the further significantly reliability of digital optical fiber direct station, expand its application range.The invention proposes one kind
Completely new full warm back-up digital processing and light distribution system.The innovative point of the system is: 1. near-end machines while supporting access in radio
With two kinds of forms of wireless access base station signal, guarantee the validity of access signal to greatest extent.2, near-end machine supports list simultaneously
Base station and Dual base stations connection type.3, near-end machine and remote termination principal and subordinate's digiboard utilize advanced number using fiber design is intersected
Word signal processing algorithm is realized standby without the module level under switching mode to control the watt level of main road He backup path signal
Part, the significantly reliability of lifting system and networking.4, remote termination supports intelligent acess and wireless access form simultaneously, to adapt to
Remote termination remains to reliably working under different scenes.5, remote termination output end uses brand-new design scheme, guarantees active and standby power amplifier intermodulation
Interference is not generated to the external world.6, cable detection module and remote termination integrated design are leaked, using advanced intelligent control algorithm, is realized
Under single port and dual-port, leakage cable abort situation can be accurately positioned.7, maximum to support the adaptive of two transparent data channels
The network interface (10/100/1000M) of rate should be adjusted, to meet subsequent more intelligentized control method needs.
Summary of the invention
It is an object of the invention to: a kind of full warm back-up digital processing and light distribution system are provided, the prior art is overcome
The not high disadvantage of reliability, extends the application range of full backup digital light compartment system.
To achieve the goals above, the present invention provides a kind of full warm back-up digital processing and light distribution system, including it is close
Terminal and remote termination, the near-end machine include near-end machine antenna, near-end machine diversity antenna, near-end machine Transmit-Receive Unit, near-end machine point
Collect Transmit-Receive Unit, near-end machine combiner device, near-end machine converter unit, near-end machine interface board, near-end machine power supply unit, near-end machine prison
Control unit, near-end machine digital signal processing unit, near-end machine Ethernet processing unit, near-end machine data-interface；The near-end machine
Combiner device includes near-end machine the first combiner device and near-end machine the second combiner device, and the near-end machine converter unit includes proximal end
From converter unit, near-end machine power supply unit includes near-end machine first power source unit and near-end machine for owner's converter unit, near-end machine
Two power supply units, the near-end machine digital signal processing unit include near-end machine main digital signal processing unit and near-end machine from number
Word signal processing unit, the near-end machine data-interface include the first data-interface of near-end machine, the second data-interface of near-end machine；Institute
Stating remote termination includes remote termination antenna, remote termination Transmit-Receive Unit, remote termination Ethernet processing unit, remote termination Digital Signal Processing
Unit, remote termination interface board, remote termination power supply unit, remote termination converter unit, remote termination data-interface, remote termination combiner
Device, distal end electromechanical bridge, remote termination amplifier, multiplexer；The remote termination digital signal processing unit includes distal end owner number
From digital signal processing unit, the remote termination power supply unit includes remote termination the first power supply list for signal processing unit and remote termination
Member and remote termination second power source unit, the remote termination converter unit include the main converter unit of remote termination and remote termination from frequency conversion list
Member, the remote termination data-interface include the second data-interface of the first data-interface of remote termination and remote termination, and the remote termination is put
Big device includes remote termination main amplifier and remote termination from amplifier；It is received and dispatched from base stations couple or through near-end machine antenna, near-end machine
After the downlink radio-frequency signal that unit receives enters near-end machine combiner device, it is divided into multiple signals, respectively enters near-end machine main transformer
Frequency unit and near-end machine become intermediate-freuqncy signal after converter unit, mixing, respectively enter near-end machine after near-end machine interface board
Main digital signal processing unit and near-end machine are from digital signal processing unit, near-end machine main digital signal processing unit and near-end machine
Become baseband signal after analog-to-digital conversion from intermediate-freuqncy signal of the digital signal processing unit to entrance, the baseband signal with come from
The first data-interface of near-end machine and the second data-interface of near-end machine and signal after near-end machine Ethernet processing unit is together
Framing is carried out, is transmitted out after becoming optical signal to remote termination；Remote termination receives the optical signal from near-end machine optical fiber, becomes number
Become baseband signal and ethernet signal by frame decoding after signal, wherein ethernet signal passes through remote termination Ethernet processing unit
Afterwards, data penetration transmission to remote termination data-interface, or become intermediate frequency letter after remote termination antenna and remote termination Transmit-Receive Unit
Number, become baseband signal after analog to digital conversion into remote termination digital signal processing unit, baseband signal is in remote termination number
Become intermediate-freuqncy signal in signal processing unit, becomes radiofrequency signal, the main converter unit of remote termination after remote termination converter unit
Downlink signal is entered remote termination electric bridge after remote termination combiner device from converter unit with remote termination, owner is put by distal end
After big device and remote termination amplify and are combined jointly from amplifier, into remote termination multiplexer after signal emitted by remote termination antenna
It goes out.
As an improvement of the present invention, the remote termination further includes leakage cable detection converter unit, when using leakage cable hair
When penetrating signal, leakage cable detection converter unit is remote termination main digital signal processing unit and remote termination from digital signal processing unit
Intermediate-freuqncy signal out becomes radiofrequency signal, is coupled in leakage cable by remote termination multiplexer, carries out leakage cable fault detection positioning.
As an improvement of the present invention, in the near-end machine, the near-end machine main digital signal processing unit and institute
Near-end machine is stated from, by interconnection optical fiber connection, the near-end machine main digital signal processing unit is logical between digital signal processing unit
A near-end machine main fiber output signal is crossed, the near-end machine is believed by a near-end machine from optical fiber output from digital signal processing unit
Number；The near-end machine main digital signal processing unit and the near-end machine from the two ways of digital signals of digital signal processing unit and
Steps are as follows for backup setting between master and slave optical fiber:
(1) judge whether near-end machine main digital signal processing unit alerts, if so, (2) are gone to step, if it is not, then going to step
(3)；
(2) judge whether the interface of near-end machine main fiber damages, if so, number of the near-end machine from digital signal processing unit
Signal gain is set as 1, and output is to near-end machine from optical fiber after framing；If it is not, then number of the near-end machine from digital signal processing unit
Word signal gain is set as 1, is transferred to near-end machine main digital signal processing unit by interconnecting optical fiber, exports after framing to proximal end
Owner's optical fiber；
(3) judge whether the main converter unit of near-end machine alerts, if it is not, the output of near-end machine main digital signal processing unit is normal
Position is indicated to near-end machine from digital signal processing unit, near-end machine is set as from the digital signal gain of digital signal processing unit
0, the digital signal gain of near-end machine main digital signal processing unit is set as 1, exports after framing to near-end machine main fiber；If
It is that near-end machine is set as 1 from the digital signal gain of digital signal processing unit, and near-end machine main digital signal processing unit passes through
It interconnects optical fiber and receives digital signal of the near-end machine from digital signal processing unit, export after framing to near-end machine main fiber.
As an improvement of the present invention, in the remote termination, the remote termination main digital signal processing unit and institute
Remote termination is stated from, by interconnection optical fiber connection, the remote termination main digital signal processing unit is logical between digital signal processing unit
It crosses a remote termination main fiber and receives signal, the remote termination is received by a remote termination from optical fiber from digital signal processing unit to be believed
Number；The remote termination main digital signal processing unit and the remote termination from the two ways of digital signals of digital signal processing unit and
Steps are as follows for backup setting between master and slave optical fiber:
(1) judge whether remote termination main digital signal processing unit alerts, if so, (2) are gone to step, if it is not, then going to step
(3)；
(2) judge whether the interface of remote termination main fiber damages, if so, number of the remote termination from digital signal processing unit
Signal gain is set as 1, receives from remote termination from the signal of optical fiber and send to remote termination from converter unit；If it is not, remote termination
Main digital signal processing unit receives the signal of remote termination main fiber, is transferred to remote termination from digital signal by interconnecting optical fiber
Unit is managed, gain is set as 1, and send to remote termination from converter unit；
(3) judge whether the main converter unit of remote termination alerts, if it is not, the output of remote termination main digital signal processing unit is normal
Position is indicated to remote termination from digital signal processing unit, remote termination is set as from the digital signal gain of digital signal processing unit
0, the digital signal gain of remote termination main digital signal processing unit is set as 1, and signal is entered by remote termination main fiber；If so,
Remote termination is set as 1 from the digital signal gain of digital signal processing unit, and remote termination main digital signal processing unit receives remote
The signal of terminal main fiber is transferred to remote termination from digital signal processing unit by interconnecting optical fiber, and send to remote termination from change
Frequency unit.
As an improvement of the present invention, between near-end machine first power source unit and near-end machine second power source unit, distal end
It is interconnected between machine first power source unit and remote termination second power source unit by interface board, when normal work, two power supply units
Mean allocation system power automatically switches to single power supply unit power supply when any one damage.
Compared with prior art: the near-end machine of the full warm back-up digital processing of the present invention and light distribution system is supported wired simultaneously
Access and two kinds of forms of wireless access base station signal guarantee the validity of access signal to greatest extent；Near-end machine is supported simultaneously
Single base station and Dual base stations connection type；Near-end machine and remote termination principal and subordinate's digiboard utilize advanced number using fiber design is intersected
Word signal processing algorithm is realized standby without the module level under switching mode to control the watt level of main road He backup path signal
Part, the significantly reliability of lifting system and networking；Remote termination supports intelligent acess and wireless access form simultaneously, to adapt to not
Reliably working is remained to remote termination under scene；Remote termination output end uses brand-new design scheme, guarantees that active and standby power amplifier intermodulation is not right
The external world generates interference；Cable detection module and remote termination integrated design are leaked, using advanced intelligent control algorithm, realizes single port
Under dual-port, leakage cable abort situation can be accurately positioned；Maximum supports the adaptive adjustment speed in two transparent data channels
The network interface (10/100/1000M) of rate, to meet subsequent more intelligentized control method needs.
Detailed description of the invention
With reference to the accompanying drawings and detailed description, structure of the invention and its advantageous effects are carried out specifically
It is bright.
Fig. 1 is the near-end machine functional block diagram of the present invention full warm back-up digital processing and light distribution system.
Fig. 2 is the remote termination functional block diagram of the present invention full warm back-up digital processing and light distribution system.
Fig. 3 is the near-end machine backup setting flow chart of the present invention full warm back-up digital processing and light distribution system.
Fig. 4 is the remote termination backup setting flow chart of the present invention full warm back-up digital processing and light distribution system.
Fig. 5 is that the remote termination of warm back-up digital processing and light distribution system entirely of the invention is single port leakage cable or antenna mode
Functional block diagram.
Fig. 6 is the functional block diagram that the remote termination of warm back-up digital processing and light distribution system entirely of the invention is dual-port leakage cable
One of.
Fig. 7 is the functional block diagram that the remote termination of warm back-up digital processing and light distribution system entirely of the invention is dual-port leakage cable
Two.
Fig. 8 is the present invention complete one of warm back-up digital processing and the networking schematic diagram of module level backup of light distribution system.
Fig. 9 is the two of the networking schematic diagram of the module level backup of the full warm back-up digital processing of the present invention and light distribution system.
Specific embodiment
In order to be more clear goal of the invention of the invention, technical solution and its advantageous effects, below in conjunction with attached drawing
And specific embodiment, the present invention will be described in further detail.It should be understood that specific reality described in this specification
Mode is applied just for the sake of explaining the present invention, is not intended to limit the present invention.
Please referring to Fig. 1 and Fig. 2, the full warm back-up digital processing of the present invention and light distribution system include near-end machine and remote termination,
Wherein, near-end machine includes: near-end machine antenna, near-end machine diversity antenna, Transmit-Receive Unit, diversity Transmit-Receive Unit, combiner device 1, divides
Combiner 2, main converter unit, from converter unit, interface board, power supply unit 1, power supply unit 2, monitoring unit, main digital signal
Processing unit, from parts such as digital signal processing unit, Ethernet processing unit, data-interface 1, data-interfaces 2；Remote termination packet
Include: remote termination antenna, Transmit-Receive Unit, Ethernet processing unit, main digital signal processing unit, from digital signal processing unit,
Interface board, power supply unit 1, power supply unit 2, main converter unit, from converter unit, data-interface 1, data-interface 2, combiner device
1, combiner device 2, combiner device 3, combiner device 4, electric bridge 1, electric bridge 2, electric bridge 3, electric bridge 4, electric bridge 5, electric bridge 6, main amplifier,
Converter unit, circulator 1, ring are detected from amplifier, main low noise 1, from low noise 1, main low noise 2, from low noise 2, leakage cable
The parts such as row device 2, multiplexer.
After the downlink radio-frequency signal received from base stations couple or near-end machine antenna and receiving unit enters combiner device,
It is divided into multiple signals, respectively enters main converter unit and becomes intermediate-freuqncy signal after converter unit, mixing, divides after interface board
Not Jin Ru main digital signal processing unit and from digital signal processing unit, according to Software Radio Theory, Digital Signal Processing
Unit becomes baseband signal to the intermediate-freuqncy signal of entrance after analog-to-digital conversion, the baseband signal with come from 1 sum number of data-interface
Signal according to interface 2, and after Ethernet processing unit carries out base band CPRI framing together, becomes light by digital optical module
Signal is transferred out through optical fiber.Remote termination receives the optical signal from near-end machine optical fiber becomes digital letter after digital optical module
Number, become baseband signal and ethernet signal after CPRI frame decoding, wherein ethernet signal passes through Ethernet processing unit
Afterwards, data penetration transmission to data-interface 1 and data-interface 2.Or become intermediate frequency letter after remote termination antenna and Transmit-Receive Unit
Number, become baseband signal after analog to digital conversion into digital signal processing unit.Baseband signal is in digital signal processing unit
In become intermediate-freuqncy signal, become radiofrequency signal after converter unit, main converter unit and passed through from converter unit downlink signal
Enter electric bridge after excessive combiner, after by main amplifier and from amplifier amplifying and be combined jointly, into multiplexer after by
Antenna transmitting signal is gone out.Wherein, when using leakage cable transmitting signal, leakage cable detection converter unit is single main digital signal processing
The intermediate-freuqncy signal that first and signal from digital signal processing unit comes out becomes radiofrequency signal, is coupled to leakage cable by multiplexer
In, carry out leakage cable fault detection positioning.
For from antenna or the received uplink signal of diversity antenna, by the process almost like with downlink signal,
Upstream radio-frequency signal is become optical signal in remote termination, and optical signal is become radiofrequency signal in near-end machine, to realize
The reception treatment process of uplink signal.
Below by taking downlink as an example for clear signal transmission:
Step 1: the downlink radio-frequency signal into near-end machine comes from following two aspect:
(1) main channel signal is directly coupled by coupler；
(2) it after receiving by near-end machine antenna, handles to obtain the radiofrequency signal of relative clean by receiving unit, the reception
Unit includes duplexer, low noise part, power amplifying part.
When specific implementation, coupler can be using 30dB/40dB/50dB or the coupler of other difference coupling grades, closely
Terminal receiving antenna can be needed according to real work scene and be selected.Duplexer, low noise, power amplifier are according to system work
Depending on working frequency.
Step 2: it is two that main channel radiofrequency signal Tx1/Rx1 or Tx2/Rx2 signal are divided to by combiner device 1 in step 1
The radiofrequency signal Tx/Rx11 and Tx/Rx12 of road constant power.Also, system can choose automatically Tx1/ according to the power of radiofrequency signal
Rx1 and Tx2/Rx2 arbitrarily signal all the way.When specific implementation, combiner device can be realized using two power splitters or using 3dB electricity
Bridge is realized；
Step 3: Tx/Rx11 and Tx/Rx12 respectively enters main converter unit and from converter unit in step 2, by inside
After duplexer filtering and frequency conversion, becomes IF Tx11 and IF the Tx12 signal of intermediate frequency respectively, filter out it by filters internal
Image interference, thus the intermediate-freuqncy signal that output is purer.When specific implementation, filter can be designed using L, C discrete devices
Or designed using dedicated integrated device, IF frequency can be actually needed according to system and adjust, IF frequency choosing in the present invention
It is set to 184.32MHz, but is not limited to the frequency.
Step 4: to intermediate-freuqncy signal purer in step 3, respectively enteing main digital signal after interface board is transferred
Processing unit and from digital signal processing unit；Theory based on software radio, main digital signal processing unit is to IF Tx11
The signal is become digital signal by A/D device according to certain sample rate.IF Tx12 is pressed from digital signal processing unit
The signal is become digital signal by A/D device according to certain sample rate.When specific implementation, binary channels is can be selected in A/D device
A/D device or single channel A/D device, sample rate can be adjusted according to IF frequency and bandwidth relationship, be sampled in the present invention
Rate is chosen to be 491.52MSPS, but is not limited to the sample rate；
Step 5: in step 4 digital signal of main digital signal processing unit with come from data-interface 1 and data-interface 2
The digital signal restored after Ethernet processing unit of signal, carry out CPRI framing together, become serial high data rate
Baseband signal become optical signal after the conversion of digital optical module and issued through main fiber.From the number of digital signal processing unit
Signal also carries out CPRI framing, and the baseband signal for becoming serial high data rate becomes light letter after the conversion of digital optical module
Number through being issued from optical fiber.When specific implementation, the signal rate from data-interface 1 and data-interface 2 can be 10M, 100M or
Person 1000M, and signal can be signal of communication such as WIFI, traffic spike such as image, video etc..This hair of data-interface number
Bright is 2, but is not limited to the number.CPRI Framed Data rate can be actually needed according to system and be adjusted, and select in the present invention
It is set to 6Gbps, but is not limited to the rate；Special chip or field programmable logic device can be used when specific framing
(FPGA) or DSP is realized；
Step 6: referring to Fig. 3, for main digital signal processing unit and the two-way from digital signal processing unit in step 5
Backup setting process between digital signal and principal and subordinate's optical fiber.
Digital signal after the two-way framing is converted to optical signal transmission after backup setting process, by digital optical module
To main fiber and from optical fiber.
Step 7: the main fiber that is obtained from step 6 and from fiber-optic signal, to remote termination light after long-distance optical fiber transmits
Fine mouth；The distance can be using 1km, 5km, 10km, 20km or 40km etc. when specific implementation.The present invention uses 20km, but not
It is limited to the milimeter number；
Step 8: the optical signal in step 7 passes through main fiber respectively and enters from the main digital signal of remote termination from optical fiber
Manage unit and from digital signal processing unit.Two ways of optical signals is converted to digital signal after digital optical module, by CPRI
After frame decoding, main digital signal processing unit obtains main baseband digital signal and Ethernet data transparent transmission signal, from digital signal
Reason unit is obtained from baseband digital signal；
Step 9: the Ethernet data transparent transmission signal in step 8 is after Ethernet processing unit, by data-interface 1
Other data terminals are transmitted to data-interface 2.When specific implementation, it is transmitted to the signal rate of data-interface 1 and data-interface 2
It can be 10M, 100M or 1000M, and signal can be signal of communication such as WIFI, traffic spike such as image, video etc.
It is 2 Deng, the data-interface number present invention, but is not limited to the number；
Step 10: remote termination obtains the mode of baseband digital signal in addition to proximally machine optical fiber transmits the letter of coming in step 8
Extra can also be obtained from remote termination antenna and remote termination diversity antenna.Detailed process is remote termination antenna reception space signal
Afterwards, it handles to obtain the radiofrequency signal of relative clean by receiving unit, which includes duplexer, low noise part, function
Rate amplification and frequency conversion section.When specific implementation, remote termination receiving antenna can be needed according to real work scene and be selected.Duplex
Depending on system operating frequency, frequency conversion section mainly realizes that radiofrequency signal becomes intermediate frequency letter for device, low noise, power amplifier
Number, the present invention uses 184.32MHz, but is not limited to the frequency；
Step 11: the intermediate-freuqncy signal in step 10 enters main digital signal processing unit, the theory based on software radio,
The signal is become digital letter by A/D device according to certain sample rate to the intermediate-freuqncy signal by main digital signal processing unit
Number.When specific implementation, double channel A/D device is can be selected in A/D device or single channel A/D device, sample rate can be according to intermediate frequencies
Frequency and bandwidth relationship and adjust, sample rate is chosen to be 491.52MSPS in the present invention, but is not limited to the sample rate；
Step 12: referring to Fig. 4, for main digital signal in step 8 and standby between digital signal and principal and subordinate's optical fiber
Part setting up procedure.
Step 13: the signal in step 8 main digital signal and becomes after the backup setting of step 12 from digital signal
Intermediate-freuqncy signal, respectively enters main converter unit and from converter unit, restores for main radiofrequency signal and from radiofrequency signal.Specific implementation
When, which is actually needed according to system and is set, and the present invention is set as 138.24MHz, but is not limited to the frequency；
Step 14: main radiofrequency signal in step 13 and from radiofrequency signal, descender becomes 1 after combiner device 1
Signal after the synthesis of road.When specific implementation, main radiofrequency signal and from radiofrequency signal both can same frequency can also be different frequency.
Combiner device 1 can be realized using two power splitters or be realized using 3dB electric bridge；
Step 15: the radiofrequency signal after synthesis in step 14, it is equal to become two-way power after electric bridge 1, phase phase
Poor 90 DEG C of radiofrequency signal after the combining of electric bridge 2, becomes 1 respectively after main amplifier and from booster output amplification
Radiofrequency signal after the power amplification of road.When specific implementation, main amplifier and the work that power linear amplification is primarily served from amplifier
With, A/AB class power amplifier or Doherty power amplifier or DPD MCPA/APD MCPA/FF MCPA etc. can be used, but it is unlimited
In the power amplifier of these technologies.Electric bridge 1 and electric bridge 2 are realized using 3dB electric bridge, but are not limited to this kind of device；
Step 16: the radiofrequency signal after power amplification in step 15 filters out intermodulation letter after multiplexer filters
Number and other interference signals, by antenna or leakage cable launch, achieve the purpose that signal cover.When specific implementation, multiplexer is adopted
It is filtered and is realized with cavity, but be not limited to using this technology；
Step 17: above step 1-16 completes the entire mistake that downlink radio-frequency signal is accessed to remote termination output by near-end machine
Journey, and for uplink signal and uplink diversity signal, it is to receive upstream radio-frequency from remote termination antenna or leakage cable and diversity antenna
After signal, by being similar to the process of step 1-16, whole process of the uplink signal from remote termination to near-end machine is completed, here not
It repeats again, but the protection of technical principle is equally effective.
The several key points for also needing to guarantee in specific implementation: the digital signal in 1. steps 8 or step 11, system meeting
It is automatic to choose wherein any signal all the way according to the power of radiofrequency signal；2. the remote termination digital signal in step 10, system meeting
The signal or remote termination antenna received signal of the transmission of near-end machine optical fiber are chosen according to actual needs；3. near-end machine and remote
Terminal main digital signal processing unit and from the interconnection optical fiber between digital signal processing unit can according to networking situation, connect
Or it disconnects and being ok；4. near-end machine and remote termination power supply unit 1 and power supply unit 2 are interconnected by interface board, between using equal
Flow Technique, when normal work, two power supply unit mean allocation system powers automatically switch to list when any one damage
A power supply unit power supply；5, when remote termination use antenna and diversity antenna when, leakage cable detection variable-frequency power sources can directly remove and
Other units normal work is not influenced.
When remote termination multiplexer output antenna is changed to leakage cable, full backup digital optical fiber direct station of the invention can have leakage
The function of cable fault detection positioning, specific implementation and work step are as follows:
Step 1: generating two base band letters from main digital signal signal processing unit and from digital signal processing unit respectively
Number.When specific implementation, which can be CW signal or has the modulated signal of certain bandwidth, and the present invention uses CW
Signal, but it is not limited to the signal type；
Step 2: two baseband signals in step 1 become two-way analog signal, and two after the conversion of D/A device
Lu Zhizheng frequency is adjusted to certain numerical value.When specific implementation, binary channels D/A device or single channel D/A device is can be selected in D/A device
Part, IF frequency can use zero intermediate frequency or non-zero if, and the centre frequency of two-way analog signal can be identical or not
Identical, the IF frequency of two-way analog signal is chosen to be 138.24MHz in the present invention, but is not limited to the frequency；
Step 3: the two-way analog if signal in step 2 detects converter unit into leakage cable, intermediate-freuqncy signal is become two
The radiofrequency signal of road different frequency or identical frequency, when specific implementation, the frequency values and transmission power level of two-way radiofrequency signal
According to system requirements it is specific depending on, the frequency range of two-way radiofrequency signal is 700-820MHz in the present invention, power≤20dBm,
But it is not limited to the parameter；
Step 4: the two-way radiofrequency signal in step 3, respectively after circulator 1 and circulator 2, into combiner device 4
After become radiofrequency signal all the way, the radiofrequency signal after multiplexer couples enter leakage cable；When specific implementation, combiner device 4 can
To be realized using two function point or 3dB electric bridge, coupler can be realized using the different degrees of coupling such as 5dB/10dB/20dB, this hair
Clearly it is set to 10dB, but is not limited to the parameter；
Step 5: entering the radiofrequency signal of leakage cable in step 4, if leakage some part of cable is broken down, inevitably result in and penetrate
Frequency signal reflex leaves the radiofrequency signal of relatively pure reflection after multiplexer filters out other interference signals.Specific implementation
When, multiplexer is realized using cavity body filter, but is not limited to the design method；
Step 6: the radiofrequency signal reflected in step 5 by leakage cable respectively enters 1 He of circulator into after combiner device 4
Circulator 2 enters leakage cable detection converter unit by reverse port；
Step 7: the two-way radiofrequency signal in step 6 becomes two-way intermediate-freuqncy signal after leakage cable detection converter unit,
And after filtering filters out mirror image interference, become the relatively pure intermediate-freuqncy signal of two-way；When specific implementation, frequency conversion system can be with
It is realized using frequency mixer, IF frequency is arranged according to system actual demand, and IF frequency of the present invention is determined as 184.32MHz,
But it is not limited to the frequency；
Step 8: the two-way intermediate-freuqncy signal in step 7 respectively enters main digital signal processing unit and from digital signal
Unit, the theory based on software radio are managed, main digital signal processing unit passes through A/D according to certain sample rate to IF Rx2
The signal is become digital signal by device.A/D device is passed through according to certain sample rate to IF Rx3 from digital signal processing unit
The signal is become digital signal by part.When specific implementation, double channel A/D device or single channel A/D device is can be selected in A/D device
Part, sample rate can be adjusted according to IF frequency and bandwidth relationship, and sample rate is chosen to be 491.52MSPS in the present invention, but not
It is limited to the sample rate；
Step 9: two ways of digital signals in step 8 is respectively with main digital signal processing unit and from Digital Signal Processing list
The baseband signal of first own transmission carries out auto-correlation computation, calculates the points of the location of peak value distance center frequency point, presses
According to the time that each points represent, temporal summation is obtained, further according to transmission speed of the electromagnetic wave in leakage cable, to obtain leakage cable
The position of fault point.When specific implementation, this method can change according to specific implementation, and the present invention uses auto-correlation algorithm,
But it is not limited to the algorithm.
Near-end machine and remote termination system protection range about warm back-up digital processing complete in the present invention and light distribution system
It should be noted that Fig. 2 is compatible single port leakage cable or antenna and diversity antenna both of which.For single port leak cable or
Person's antenna and this mode of diversity antenna only change the switching of power amplifier referring to Fig. 5, being one of deformation
Mode, this system also belong to protection scope of the present invention.For the leakage cable system form of dual-port, Fig. 6 and Fig. 7 are please referred to,
Compared with Fig. 2, diversity reception channel is only eliminated, changes the connection type of multiplexer below, is still in the present invention
A kind of deformation, belongs to the scope of protection of the present invention.In addition, two channels in the present invention, support to be mutually backups, it can also be two
Channel is mutually indepedent, supports different frequency, becomes two-band digital processing and light distribution system, this system also belongs to the present invention
Protection scope.And the multiple frequency ranges being derived based on two-band digital processing and light distribution system, such as more than two frequencies
The digital processing and light distribution system of section equally also belong to protection scope of the present invention.
Fig. 8 and Fig. 9 are please referred to, it is mutual using internal optical fiber in order to realize the module level backup of each remote termination and near-end machine
Connection or the cross interconnected network construction form of external fiber.
The present invention provides a kind of completely new full warm back-up digital processings and light distribution system, overcome existing backup number
The not high disadvantage of light distribution system reliability, extends the application range of full backup digital light compartment system, not only meets existing
The requirement of high reliability in mobile communication and private network communication network, and to multifrequency when meeting future communications network Joint construction and sharing
The requirement of number of segment word light distribution system.Therefore one kind proposed by the invention completely new full warm back-up digital processing and light distribution system
System has boundless application prospect in the higher communication network application of reliability requirement.
According to the disclosure and teachings of the above specification, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula carries out change and modification appropriate.Therefore, the invention is not limited to the specific embodiments disclosed and described above, to this
Some modifications and changes of invention should also be as falling into the scope of the claims of the present invention.In addition, although this specification
In use some specific terms, these terms are merely for convenience of description, does not limit the present invention in any way.
Claims (3)
1. a kind of full warm back-up digital processing and light distribution system, including near-end machine and remote termination, it is characterised in that:
The near-end machine includes near-end machine antenna, near-end machine diversity antenna, near-end machine Transmit-Receive Unit, near-end machine diversity transmitting-receiving list
Member, near-end machine combiner device, near-end machine converter unit, near-end machine interface board, near-end machine power supply unit, near-end machine monitoring unit,
Near-end machine digital signal processing unit, near-end machine Ethernet processing unit, near-end machine data-interface；The near-end machine combiner device
Including near-end machine the first combiner device and near-end machine the second combiner device, the near-end machine converter unit includes near-end machine main transformer frequency
From converter unit, near-end machine power supply unit includes near-end machine first power source unit and near-end machine second source list for unit, near-end machine
Member, the near-end machine digital signal processing unit include near-end machine main digital signal processing unit and near-end machine from digital signal
Unit is managed, the near-end machine data-interface includes the first data-interface of near-end machine, the second data-interface of near-end machine；
The remote termination includes remote termination antenna, remote termination Transmit-Receive Unit, remote termination Ethernet processing unit, remote termination number letter
Number processing unit, remote termination interface board, remote termination power supply unit, remote termination converter unit, remote termination data-interface, remote termination point
Combiner, distal end electromechanical bridge, remote termination amplifier, multiplexer；The remote termination digital signal processing unit includes distal end owner
From digital signal processing unit, the remote termination power supply unit includes the first electricity of remote termination for digital signal processing unit and remote termination
Source unit and remote termination second power source unit, the remote termination converter unit include the main converter unit of remote termination and remote termination from change
Frequency unit, the remote termination data-interface include the second data-interface of the first data-interface of remote termination and remote termination, the distal end
Machine amplifier includes remote termination main amplifier and remote termination from amplifier；
Enter near-end machine point from base stations couple or the downlink radio-frequency signal received through near-end machine antenna, near-end machine Transmit-Receive Unit
After combiner, it is divided into multiple signals, respectively enters the main converter unit of near-end machine and near-end machine from becoming after converter unit, mixing
Frequency signal, respectively enterd after near-end machine interface board near-end machine main digital signal processing unit and near-end machine from digital signal from
Unit, near-end machine main digital signal processing unit and near-end machine is managed to pass through from intermediate-freuqncy signal of the digital signal processing unit to entrance
Become baseband signal after analog-to-digital conversion, which connects with from the first data-interface of near-end machine and the second data of near-end machine
Mouthful and the signal after near-end machine Ethernet processing unit carry out framing together, transmit out after becoming optical signal to remote termination；
Remote termination receives the optical signal from near-end machine optical fiber, becomes baseband signal by frame decoding after becoming digital signal and Ethernet is believed
Number, wherein ethernet signal is after remote termination Ethernet processing unit, data penetration transmission to remote termination data-interface, Huo Zhejing
Become intermediate-freuqncy signal after crossing remote termination antenna and remote termination Transmit-Receive Unit, passes through modulus into remote termination digital signal processing unit
Become baseband signal after transformation, baseband signal becomes intermediate-freuqncy signal in remote termination digital signal processing unit, by remote termination
Become radiofrequency signal, the main converter unit of remote termination and remote termination after converter unit and downlink signal is passed through remote termination from converter unit
Enter remote termination electric bridge after combiner device, amplifies and be combined jointly from amplifier by remote termination main amplifier and remote termination
Afterwards, it is gone out into after remote termination multiplexer by remote termination antenna transmitting signal.
2. full warm back-up digital processing according to claim 1 and light distribution system, which is characterized in that the remote termination is also
Converter unit is detected including a leakage cable, when using leakage cable transmitting signal, leakage cable detection converter unit believes distal end owner's number
Number processing unit and remote termination become radiofrequency signal from the intermediate-freuqncy signal that digital signal processing unit comes out, by remote termination multiplexing
Device is coupled in leakage cable, carries out leakage cable fault detection positioning.
3. full warm back-up digital processing according to claim 1 and light distribution system, which is characterized in that the first electricity of near-end machine
Pass through between source unit and near-end machine second power source unit, between remote termination first power source unit and remote termination second power source unit
Interface board interconnection, when normal work, two power supply unit mean allocation system powers automatically switch when any one damage
It powers to single power supply unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510644867.5A CN105406917B (en) | 2015-09-30 | 2015-09-30 | A kind of full warm back-up digital processing and light distribution system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510644867.5A CN105406917B (en) | 2015-09-30 | 2015-09-30 | A kind of full warm back-up digital processing and light distribution system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105406917A CN105406917A (en) | 2016-03-16 |
| CN105406917B true CN105406917B (en) | 2019-01-25 |
Family
ID=55472194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510644867.5A Active CN105406917B (en) | 2015-09-30 | 2015-09-30 | A kind of full warm back-up digital processing and light distribution system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105406917B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106850032B (en) * | 2017-01-19 | 2023-06-20 | 京信网络系统股份有限公司 | Redundant backup near-end machine, far-end machine and system of digital optical fiber repeater |
| CN109039365A (en) * | 2018-09-28 | 2018-12-18 | 广州开信通讯系统有限公司 | Communication equipment and repeater |
| CN109361455A (en) * | 2018-10-25 | 2019-02-19 | 三维通信股份有限公司 | A kind of digital optical fiber repeater system and switching method of band backup |
| CN110850239B (en) * | 2019-11-01 | 2021-04-27 | 索亮 | Leaky cable on-line monitoring method and device based on SDR platform and storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101895337A (en) * | 2010-07-07 | 2010-11-24 | 东莞市铭普实业有限公司 | Double-fiber hot backup radio-frequency intelligent optical module |
| US8116634B2 (en) * | 2008-03-11 | 2012-02-14 | Futurewei Technologies, Inc. | Adaptive injection current controlled burst mode SOA for long and wide reach high speed PON |
| CN202153741U (en) * | 2011-07-20 | 2012-02-29 | 上海鑫众通信技术有限公司 | Multi-network digital light distribution system |
| CN102394698A (en) * | 2011-10-26 | 2012-03-28 | 奥维通信股份有限公司 | Simulated optical fiber repeater distribution system integrated with coverage antenna |
| WO2013036945A1 (en) * | 2011-09-08 | 2013-03-14 | Ofs Fitel, Llc | Arrangement for deploying co-existing gpon and xgpon optical communication systems |
| US8594502B2 (en) * | 2009-04-15 | 2013-11-26 | Ofs Fitel, Llc | Method and apparatus using distributed raman amplification and remote pumping in bidirectional optical communication networks |
-
2015
- 2015-09-30 CN CN201510644867.5A patent/CN105406917B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8116634B2 (en) * | 2008-03-11 | 2012-02-14 | Futurewei Technologies, Inc. | Adaptive injection current controlled burst mode SOA for long and wide reach high speed PON |
| US8594502B2 (en) * | 2009-04-15 | 2013-11-26 | Ofs Fitel, Llc | Method and apparatus using distributed raman amplification and remote pumping in bidirectional optical communication networks |
| CN101895337A (en) * | 2010-07-07 | 2010-11-24 | 东莞市铭普实业有限公司 | Double-fiber hot backup radio-frequency intelligent optical module |
| CN202153741U (en) * | 2011-07-20 | 2012-02-29 | 上海鑫众通信技术有限公司 | Multi-network digital light distribution system |
| WO2013036945A1 (en) * | 2011-09-08 | 2013-03-14 | Ofs Fitel, Llc | Arrangement for deploying co-existing gpon and xgpon optical communication systems |
| CN102394698A (en) * | 2011-10-26 | 2012-03-28 | 奥维通信股份有限公司 | Simulated optical fiber repeater distribution system integrated with coverage antenna |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105406917A (en) | 2016-03-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106712851B (en) | Distributed wireless signal coverage system | |
| JP3406527B2 (en) | Optical repeater system for service area expansion | |
| CN100399842C (en) | Middle-frequency transmission method and middle-frequency interface for base-station to realize radio-frequency zoom-out | |
| CN108847891B (en) | Radio over fiber distributed small base station system | |
| CN105406917B (en) | A kind of full warm back-up digital processing and light distribution system | |
| CN201210678Y (en) | Railway GSM-R digital optical fiber repeater station communication system | |
| CN103379674B (en) | A kind of multimode numeral DAS system supporting multiple source to access | |
| CN102571212B (en) | Indoor optical fiber distribution system | |
| CN210693937U (en) | 5G indoor distribution system | |
| CN103401612B (en) | Based on the optical fiber of FTTH network and wireless mixed access system and hybrid access method | |
| TW201803296A (en) | Multi-business digital light distribution system and multi-business capacity scheduling method | |
| CN103595478A (en) | High-reliability GSM-R digital optical fiber repeater and working method thereof | |
| CA2790273A1 (en) | Coaxial cable distribution of catv and wireless signals | |
| CN105743582A (en) | Multi-service access digital-analog hybrid networking all-optical distributed system | |
| CN109412633A (en) | Communication equipment and repeater | |
| CN101183903A (en) | Digital optical fiber repeater system | |
| CN107889120B (en) | Indoor coverage system for improving TDD-LTE uplink interference immunity | |
| CN101321020A (en) | Optical fiber distribution system used for multi-communication standard access and its control method | |
| CN201805426U (en) | Autosynchronous SCDMA optic-fiber repeater equipment | |
| CN101944956B (en) | Fiber access system of wireless signal based on tri-network integration | |
| CN210327552U (en) | Dual-mode wireless communication device and railway vehicle-mounted equipment formed by same | |
| CN203788468U (en) | Digital optical fiber remote device with GSM, DCS, TD-SCDMA and WLAN coexistence | |
| CN201479389U (en) | Hot backup fiber optic repeater | |
| US8577222B2 (en) | Optical repeater system | |
| CN204886973U (en) | 400MHz railway heibei provincial opera digital fiber repeater remote termination |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190717 Address after: Room 311, Room 3, No. 602, Guangshan Second Road, Tianhe District, Guangzhou City, Guangdong 510000 Patentee after: Guangzhou Exin Telecom Co.,Ltd. Address before: 510663 8th Floor, 1021-1023 Gaopu Road, Tianhe District, Guangzhou City, Guangdong Province Patentee before: GUANGZHOU EYECOM TELECOMMUNICATIONS Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20191125 Granted publication date: 20190125 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20210827 Granted publication date: 20190125 |
|
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20240207 Granted publication date: 20190125 |