CN105406917A - Full hot backup digital processing and light distribution system - Google Patents
Full hot backup digital processing and light distribution system Download PDFInfo
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- 239000013307 optical fiber Substances 0.000 claims description 42
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- 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
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Abstract
The invention discloses a full hot backup digital processing and light distribution system. The system comprises a near-end unit and a far-end unit. According to the full hot backup digital processing and light distribution system, the defect of low reliability of the conventional backup digital light distribution system is overcome, the application range of a full backup digital light distribution system is expanded, the requirement of high reliability in the conventional mobile communication and private communication networks is satisfied, and the requirement of a multi-frequency-band digital light distribution system during co-construction and sharing of the future communication network is also satisfied. According to the brand-new full hot backup digital processing and light distribution system, the application prospect is very wide in the application of communication network with high requirement of reliability.
Description
Technical field
The present invention relates to the reliability transmission of mobile communication and private network communication, more particularly, relate to a kind of full Hot Spare digital processing and Light distribation system.
Background technology
In recent years, digital light compartment system relied on the features such as its networking capability is strong, covering power is strong, noise is low, low in energy consumption, convenient debugging, failure rate is low, obtained large-scale promotion and application in moving communicating field.But, while bringing abundant profit for manufacturer, also bring new problem.Reliability due to existing digital light compartment system is general not high, inevitably there is device damage, cause overlay area to communicate to paralyse, this just requires that manufacturer must be on the scene maintenance the very first time, equipment later maintenance cost is caused to increase considerably, especially very high to communication coverage requirements occasion, cannot apply at all.In addition, in private network communication field, the fields such as such as railway, fire-fighting, public security, can be more strict to reliability requirement, and existing digital light compartment system cannot meet its requirement at all.
In order to improve the reliability of digital fiber compartment system, application number be 201310531167.6 patent of invention disclose one " railway GSM-R digital optical fiber repeater station of high reliability and method of work thereof ", the method that it switches by adopting principal and subordinate road, realize device link backup, improve system reliability.The method shortcoming is as follows: (1) near-end machine adopts the method for coupling base station signal, higher to base station reliability requirement, when the base station signal be coupled goes wrong, causes whole digital optical fiber direct station overlay network to be paralysed.(2) near-end machine duplexer and combiner device adopt built-in method, in networking when adopting Dual base stations scheme, can not realize two stylobate stations simultaneously from a near-end machine access.Two near-end machines must be adopted, improve system group network cost.(3) near-end machine and remote termination adopt two optical fiber parallel join modes, when main road optical fiber breaks down, backup optical fiber must be switched to by the whole network, cell level backup can not be realized and switch, and adopt the form of switching over, system reliability limitation.(4) in remote termination main PA by electric bridge and backup PA by behind electric bridge combination road by antenna transmission, due to the nonlinear distortion of main PA, intermodulation must be caused the interference of other communications bands, especially when other frequency ranges and GSM-R frequency range coexist, cannot use.(5) leaking cable detection module by connecing leakage cable after triplexer with behind ZhuPAHe road, realizing leaking cable and detecting, when needs dual-port leakage cable detects, this system cannot realize.
In order to overcome the shortcoming of foregoing invention patent own, simultaneously in conjunction with mobile communication and private network communication field to the requirement of communication reliability, further the reliability of significantly digital optical fiber direct station, expands its range of application.The present invention proposes a kind of brand-new full Hot Spare digital processing and Light distribation system.The innovative point of this system is: 1. near-end machine supports access in radio and wireless access base station signal two kinds of forms simultaneously, ensures the validity of access signal to greatest extent.2, near-end machine supports single base station and Dual base stations connected mode simultaneously.3, near-end machine and remote termination principal and subordinate digiboard adopt the design of intersection optical fiber, utilize advanced digital signal processing algorithm, control the watt level of main road and backup path signal, realize without the module level backup under switching mode, the reliability of significantly elevator system and networking.4, remote termination supports intelligent acess and wireless access form simultaneously, still can reliably working with remote termination under adapting to different scene.5, remote termination output adopts brand-new design scheme, ensures that active and standby power amplifier intermodulation does not produce interference to external world.6, leak cable detection module and remote termination integrated design, adopt advanced intelligent control algorithm, under realizing single port and dual-port, accurately can both locate Lou cable abort situation.7, the network interface (10/100/1000M) of the self-adaptative adjustment speed of maximum support two transparent data passages, to meet follow-up more intelligentized control method needs.
Summary of the invention
The object of the invention is to: a kind of full Hot Spare digital processing and Light distribation system are provided, overcome the shortcoming that prior art reliability is not high, extend the range of application of full backup digital light compartment system.
To achieve these goals, the invention provides a kind of full Hot Spare digital processing and Light distribation system, comprise near-end machine and remote termination, described near-end machine comprises near-end machine antenna, near-end machine diversity antenna, near-end machine Transmit-Receive Unit, near-end machine diversity Transmit-Receive Unit, near-end machine combiner device, near-end machine converter unit, near-end machine interface board, near-end machine power subsystem, near-end machine monitoring unit, near-end machine digital signal processing unit, near-end machine Ethernet processing unit, near-end machine data-interface, described near-end machine combiner device comprises near-end machine first combiner device and near-end machine second combiner device, described near-end machine converter unit comprises the main converter unit of near-end machine, near-end machine from converter unit, near-end machine power subsystem comprises near-end machine first power subsystem and near-end machine second source unit, described near-end machine digital signal processing unit comprises near-end machine main digital signal processing unit and near-end machine from digital signal processing unit, and described near-end machine data-interface comprises near-end machine first data-interface, near-end machine second data-interface, described remote termination comprises 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 subsystem, remote termination converter unit, remote termination data-interface, remote termination combiner device, remote termination electric bridge, remote termination amplifier, multiplexer, described remote termination digital signal processing unit comprises remote termination main digital signal processing unit and remote termination from digital signal processing unit, described remote termination power subsystem comprises remote termination first power subsystem and remote termination second source unit, described remote termination converter unit comprises the main converter unit of remote termination and remote termination from converter unit, described remote termination data-interface comprises remote termination first data-interface and remote termination second data-interface, and described remote termination amplifier comprises remote termination main amplifier and remote termination from amplifier, from base stations couple or through near-end machine antenna, after the downlink radio-frequency signal that near-end machine Transmit-Receive Unit receives enters near-end machine combiner device, be divided into multiple signals, enter the main converter unit of near-end machine and near-end machine respectively from converter unit, intermediate-freuqncy signal is become after mixing, near-end machine main digital signal processing unit and near-end machine is entered respectively from digital signal processing unit after near-end machine interface board, near-end machine main digital signal processing unit and near-end machine become baseband signal to the intermediate-freuqncy signal entered from digital signal processing unit after analog-to-digital conversion, this baseband signal with from near-end machine first data-interface and near-end machine second data-interface, and the signal after near-end machine Ethernet processing unit carries out framing together, transfer out after becoming light signal to remote termination, remote termination receives the light signal from near-end machine optical fiber, baseband signal and ethernet signal is become through separating frame after becoming digital signal, wherein ethernet signal is after remote termination Ethernet processing unit, data penetration transmission to remote termination data-interface, or after remote termination antenna and remote termination Transmit-Receive Unit, become intermediate-freuqncy signal, enter remote termination digital signal processing unit and become baseband signal after analog to digital conversion, baseband signal becomes intermediate-freuqncy signal in remote termination digital signal processing unit, radiofrequency signal is become after remote termination converter unit, the main converter unit of remote termination and remote termination enter remote termination electric bridge downstream signal from converter unit after remote termination combiner device, after remote termination main amplifier and remote termination jointly to amplify from amplifier and close road, gone out by remote termination antenna transmission signal after entering remote termination multiplexer.
As a modification of the present invention, described remote termination also comprises a leakage cable and detects converter unit, when adopting leakage cable to transmit, leak cable to detect converter unit remote termination main digital signal processing unit and remote termination are become radiofrequency signal from digital signal processing unit intermediate-freuqncy signal out, be coupled to Lou in cable through remote termination multiplexer, carry out leakage cable fault detect location.
As a modification of the present invention, in described near-end machine, described near-end machine main digital signal processing unit and described near-end machine pass through interconnected Fiber connection between digital signal processing unit, described near-end machine main digital signal processing unit is by a near-end machine main fiber output signal, and described near-end machine passes through a near-end machine from optical output signal from digital signal processing unit; Described near-end machine main digital signal processing unit and described near-end machine as follows from the backup setting step between the two ways of digital signals and master and slave optical fiber of digital signal processing unit:
(1) judge the whether alarm of near-end machine main digital signal processing unit, if so, go to step (2), if not, then go to step (3);
(2) judge whether the interface of near-end machine main fiber damages, and if so, near-end machine is set to 1 from the digital signal gain of digital signal processing unit, exports near-end machine to from optical fiber after framing; If not, then near-end machine is set to 1 from the digital signal gain of digital signal processing unit, through interconnected Optical Fiber Transmission to near-end machine main digital signal processing unit, exports near-end machine main fiber after framing to;
(3) the whether alarm of the main converter unit of near-end machine is judged, if not, near-end machine main digital signal processing unit exports normal sign position to near-end machine from digital signal processing unit, near-end machine is set to 0 from the digital signal gain of digital signal processing unit, the digital signal gain of near-end machine main digital signal processing unit is set to 1, exports near-end machine main fiber after framing to; If so, near-end machine is set to 1 from the digital signal gain of digital signal processing unit, and near-end machine main digital signal processing unit receives near-end machine from the digital signal of digital signal processing unit through interconnected optical fiber, exports near-end machine main fiber after framing to.
As a modification of the present invention, in described remote termination, described remote termination main digital signal processing unit and described remote termination pass through interconnected Fiber connection between digital signal processing unit, described remote termination main digital signal processing unit is by a remote termination main fiber Received signal strength, and described remote termination passes through a remote termination from optical fiber Received signal strength from digital signal processing unit; Described remote termination main digital signal processing unit and described remote termination as follows from the backup setting step between the two ways of digital signals and master and slave optical fiber of digital signal processing unit:
(1) judge the whether alarm of remote termination main digital signal processing unit, if so, go to step (2), if not, then go to step (3);
(2) judge whether the interface of remote termination main fiber damages, and if so, remote termination is set to 1 from the digital signal gain of digital signal processing unit, receive and deliver to remote termination from converter unit from remote termination from the signal of optical fiber; If not, remote termination main digital signal processing unit receives the signal of remote termination main fiber, through interconnected Optical Fiber Transmission to remote termination from digital signal processing unit, gain is set to 1, and delivers to remote termination from converter unit;
(3) the whether alarm of the main converter unit of remote termination is judged, if not, remote termination main digital signal processing unit exports normal sign position to remote termination from digital signal processing unit, remote termination is set to 0 from the digital signal gain of digital signal processing unit, the digital signal gain of remote termination main digital signal processing unit is set to 1, and signal is entered by remote termination main fiber; If so, remote termination main digital signal processing unit receives the signal of remote termination main fiber, through interconnected Optical Fiber Transmission to remote termination from digital signal processing unit, and deliver to remote termination from converter unit.
As a modification of the present invention, interconnected by interface board between near-end machine first power subsystem and near-end machine second source unit, between remote termination first power subsystem and remote termination second source unit, during normal work, two power subsystem mean allocation system powers, when any one damages, automatically switch to single power subsystem and power.
Compared with prior art: the near-end machine of the full Hot Spare digital processing of the present invention and Light distribation system supports access in radio and wireless access base station signal two kinds of forms simultaneously, the validity of access signal is ensured to greatest extent; Near-end machine supports single base station and Dual base stations connected mode simultaneously; Near-end machine and remote termination principal and subordinate digiboard adopt the design of intersection optical fiber, utilize advanced digital signal processing algorithm, control the watt level of main road and backup path signal, realize without the module level backup under switching mode, the reliability of significantly elevator system and networking; Remote termination supports intelligent acess and wireless access form simultaneously, still can reliably working to adapt under different scene remote termination; Remote termination output adopts brand-new design scheme, ensures that active and standby power amplifier intermodulation does not produce interference to external world; Leak cable detection module and remote termination integrated design, adopt advanced intelligent control algorithm, under realizing single port and dual-port, accurately can both locate Lou cable abort situation; The network interface (10/100/1000M) of the self-adaptative adjustment speed of maximum support two transparent data passages, to meet follow-up more intelligentized control method needs.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, structure of the present invention and Advantageous Effects thereof are described in detail.
Fig. 1 is the near-end machine theory diagram of the full Hot Spare digital processing of the present invention and Light distribation system.
Fig. 2 is the remote termination theory diagram of the full Hot Spare digital processing of the present invention and Light distribation system.
Fig. 3 is the near-end machine backup setting flow chart of the full Hot Spare digital processing of the present invention and Light distribation system.
Fig. 4 is the remote termination backup setting flow chart of the full Hot Spare digital processing of the present invention and Light distribation system.
Fig. 5 is the remote termination of the full Hot Spare digital processing of the present invention and Light distribation system is the theory diagram that single port leaks cable or antenna mode.
Fig. 6 is the remote termination of the full Hot Spare digital processing of the present invention and Light distribation system is that dual-port leaks one of theory diagram of cable.
Fig. 7 is the remote termination of the full Hot Spare digital processing of the present invention and Light distribation system is the theory diagram two that dual-port leaks cable.
Fig. 8 is one of networking schematic diagram of the module level backup of the full Hot Spare digital processing of the present invention and Light distribation system.
Fig. 9 is the networking schematic diagram two of the module level backup of the full Hot Spare digital processing of the present invention and Light distribation system.
Embodiment
In order to make goal of the invention of the present invention, technical scheme and Advantageous Effects thereof more clear, below in conjunction with the drawings and specific embodiments, the present invention is further elaborated.Should be understood that, the embodiment described in this specification is only used to explain the present invention, is not intended to limit the present invention.
Refer to Fig. 1 and Fig. 2, the full Hot Spare digital processing of the present invention and Light distribation system comprise near-end machine and remote termination, wherein, near-end machine comprises: near-end machine antenna, near-end machine diversity antenna, Transmit-Receive Unit, diversity Transmit-Receive Unit, combiner device 1, combiner device 2, main converter unit, from converter unit, interface board, power subsystem 1, power subsystem 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 comprises: remote termination antenna, Transmit-Receive Unit, Ethernet processing unit, main digital signal processing unit, from digital signal processing unit, interface board, power subsystem 1, power subsystem 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, from amplifier, main LNA 1, from LNA 1, main LNA 2, from LNA 2, leak cable and detect converter unit, circulator 1, circulator 2, the parts such as multiplexer.
After the downlink radio-frequency signal received from base stations couple or near-end machine antenna and receiving element enters combiner device, be divided into multiple signals, enter main converter unit respectively and from converter unit, intermediate-freuqncy signal is become after mixing, main digital signal processing unit is entered respectively and from digital signal processing unit after interface board, according to Software Radio Theory, digital signal processing unit becomes baseband signal to the intermediate-freuqncy signal entered after analog-to-digital conversion, this baseband signal with from data-interface 1 and data-interface 2, and the signal after Ethernet processing unit carries out base band CPRI framing together, become light signal by digital light module to go out through Optical Fiber Transmission.The light signal that remote termination receives from near-end machine optical fiber becomes digital signal after digital light module, separate after frame through CPRI and become baseband signal and ethernet signal, wherein ethernet signal is after Ethernet processing unit, data penetration transmission to FPDP 1 and FPDP 2.Or after remote termination antenna and Transmit-Receive Unit, become intermediate-freuqncy signal, enter digital signal processing unit and become baseband signal after analog to digital conversion.Baseband signal becomes intermediate-freuqncy signal in digital signal processing unit, radiofrequency signal is become after converter unit, main converter unit and downstream signal is entered electric bridge after combiner device from converter unit, through main amplifier with jointly amplify from amplifier and after closing road, gone out by antenna transmission signal after entering multiplexer.Wherein, when adopting leakage cable to transmit, leak cable to detect converter unit and become radiofrequency signal main digital signal processing unit with from the signal intermediate-freuqncy signal out of digital signal processing unit, be coupled to Lous in cable through multiplexer, carry out the fault detect of leakage cable and locate.
For the upward signal received from antenna or diversity antenna, through the process almost similar with downstream signal, in remote termination, upstream radio-frequency signal is become light signal, and in near-end machine, light signal is become radiofrequency signal, thus realize the reception processing procedure of upward signal.
Below for the transmission of clear signal down link:
Step 1: enter the downlink radio-frequency signal of near-end machine from following two aspects:
(1) to be directly coupled main channel signal by coupler;
(2), after being received by near-end machine antenna, obtain the radiofrequency signal of relative clean through receiving element process, this receiving element comprises duplexer, LNA part, power amplifying part.
During specific implementation, coupler can adopt the coupler of 30dB/40dB/50dB or other different coupling grades, and near-end machine reception antenna can need according to real work scene and select.Duplexer, LNA, power amplifier are determined according to system operating frequency.
In step 2. step 1, main channel radiofrequency signal Tx1/Rx1 or Tx2/Rx2 signal are divided into radiofrequency signal Tx/Rx11 and the Tx/Rx12 of two-way constant power through combiner device 1.Further, system according to the power of radiofrequency signal, can choose any road signal of Tx1/Rx1 and Tx2/Rx2 automatically.During specific implementation, combiner device can adopt two power splitters to realize or adopt 3dB electric bridge to realize;
Step 3: in step 2, Tx/Rx11 and Tx/Rx12 enters main converter unit and respectively from converter unit, after inner duplexer filtering and frequency conversion, become IFTx11 and the IFTx12 signal of intermediate frequency respectively, filter out its Image interference through filters internal, thus export purer intermediate-freuqncy signal.During specific implementation, filter can adopt L, C discrete devices design or adopt special integrated device to design, and IF-FRE can adjust according to system actual needs, and in the present invention, IF-FRE is chosen to be 184.32MHz, but is not limited to this frequency.Step 4: to intermediate-freuqncy signal purer in step 3, enters main digital signal processing unit respectively and from digital signal processing unit after interface board switching; Based on the theory of software radio, main digital signal processing unit becomes digital signal through A/D device this signal according to certain sample rate to IFTx11.From digital signal processing unit, this signal, digital signal is become through A/D device according to certain sample rate to IFTx12.During specific implementation, A/D device can select double channel A/D device or single channel A/D device, and 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 5: the digital signal that in step 4, the digital signal of main digital signal processing unit is recovered after Ethernet processing unit with the signal from data-interface 1 and data-interface 2, carry out CPRI framing together, the baseband signal becoming serial high data rate becomes light signal and sends through main fiber after digital light module converts.From the digital signal of digital signal processing unit, also carry out CPRI framing, the baseband signal becoming serial high data rate becomes light signal through sending from optical fiber after digital light module converts.During specific implementation, the signal rate from data-interface 1 and data-interface 2 can be 10M, 100M or 1000M, and signal can be that signal of communication is if WIFI, traffic spike are as image, video etc.The present invention of data-interface number is 2, but is not limited to this number.CPRI Framed Data speed can adjust according to system actual needs, is chosen to be 6Gbps, but is not limited to this speed in the present invention; Special chip or field programmable logic device (FPGA) or DSP can be adopted during concrete framing to realize;
Step 6: refer to Fig. 3, for main digital signal processing unit in step 5 with from the backup setting process between the two ways of digital signals and principal and subordinate's optical fiber of digital signal processing unit.
Digital signal after this two-way framing, after backup setting process, is that optical signal transmission is to main fiber with from optical fiber by digital light module converts.
Step 7: the main fiber obtained from step 6 and from fiber-optic signal, to remote termination optical fiber port after long-distance optical fiber transmission; During specific implementation, this distance can adopt 1km, 5km, 10km, 20km or 40km etc.The present invention adopts 20km, but is not limited to this milimeter number;
Step 8: the light signal in step 7, respectively through main fiber and from optical fiber enter remote termination main digital signal processing unit and from digital signal processing unit.Two ways of optical signals is converted to digital signal after digital light module, and separate after frame through CPRI, main digital signal processing unit obtains main baseband digital signal and Ethernet data transparent transmission signal, obtains from baseband digital signal from digital signal processing unit;
Step 9: the Ethernet data transparent transmission signal in step 8, after Ethernet processing unit, transfers to other data terminals through data-interface 1 and data-interface 2.During specific implementation, the signal rate transferring to data-interface 1 and data-interface 2 can be 10M, 100M or 1000M, and signal can be signal of communication if WIFI, traffic spike are as image, video etc., the present invention of data-interface number is 2, but is not limited to this number; Step 10: remote termination obtains the mode of baseband digital signal except the signal that in step 8, proximally machine Optical Fiber Transmission is come, and can also distally machine antenna and remote termination diversity antenna obtain.Detailed process is that after remote termination antenna receives spacing wave, obtain the radiofrequency signal of relative clean through receiving element process, this receiving element comprises duplexer, LNA part, power amplification and frequency conversion part.During specific implementation, remote termination reception antenna can need according to real work scene and select.Duplexer, LNA, power amplifier are determined according to system operating frequency, and frequency conversion part mainly realizes radiofrequency signal and becomes intermediate-freuqncy signal, and the present invention adopts 184.32MHz, but is not limited to this frequency;
Step 11: the intermediate-freuqncy signal in step 10 enters main digital signal processing unit, based on the theory of software radio, main digital signal processing unit becomes digital signal through A/D device this signal according to certain sample rate to this intermediate-freuqncy signal.During specific implementation, A/D device can select double channel A/D device or single channel A/D device, and 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 12: refer to Fig. 4, for the main digital signal in step 8 with from the backup setting process between digital signal and principal and subordinate's optical fiber.
Step 13: the signal in step 8 is after the backup setting of step 12, and main digital signal and become intermediate-freuqncy signal from digital signal, enters main converter unit and respectively from converter unit, reverts to main radiofrequency signal and from radiofrequency signal.During specific implementation, this IF-FRE sets according to system actual needs, and the present invention is set to 138.24MHz, but is not limited to this frequency;
Step 14: the main radiofrequency signal in step 13 and from radiofrequency signal, descender, becomes the signal after 1 tunnel synthesis after combiner device 1.During specific implementation, main radiofrequency signal and both can frequency also can different frequency equally from radiofrequency signal.Combiner device 1 can adopt two power splitters to realize also adopting 3dB electric bridge to realize;
Step 15: the radiofrequency signal after the synthesis in step 14, two-way power is become equal, the radiofrequency signal that phase is 90 DEG C, respectively through main amplifier with after amplifying from booster output after electric bridge 1, behind the 2-in-1 road of electric bridge, become the radiofrequency signal after 1 tunnel power amplification.During specific implementation, main amplifier and from amplifier mainly play power linear amplify effect, A/AB class power amplifier or Doherty power amplifier or DPDMCPA/APDMCPA/FFMCPA etc. can be adopted, but be not limited to the power amplifier of these technology.Electric bridge 1 and electric bridge 2 adopt 3dB electric bridge to realize, but are not limited to this kind of device;
Step 16: the radiofrequency signal after power amplification in step 15, after multiplexer filtering, filtering inter-modulated signal and other interference signals, launched by antenna or leakage cable, reach the object of quorum sensing inhibitor.During specific implementation, multiplexer adopts cavity filtering to realize, but is not limited to adopt this technology;
Step 17: above step 1-16 completes downlink radio-frequency signal is accessed to remote termination output whole process by near-end machine; and for upward signal and up diversity signal; it is distally machine antenna or leak after cable and diversity antenna receive upstream radio-frequency signal; through being similar to the process of step 1-16; complete upward signal distally machine to the whole process of near-end machine; here repeat no more, but the protection of know-why is effective equally.
Also need the several key points ensured in concrete enforcement: 1. the digital signal in step 8 or step 11, system according to the power of radiofrequency signal, can choose wherein any road signal automatically; 2. the remote termination digital signal in step 10, the signal that system can be chosen near-end machine Optical Fiber Transmission according to actual needs and come or the signal that remote termination antenna receives; 3. near-end machine and remote termination main digital signal processing unit and can according to networking situation from the interconnected optical fiber between digital signal processing unit, connecting or disconnect can; 4. near-end machine and remote termination power subsystem 1 and power subsystem 2 interconnected by interface board, between adopt flow equalize technology, when normally working, two power subsystem mean allocation system powers, when any one damages, automatically switch to single power subsystem and power; 5, when remote termination adopts antenna and diversity antenna, leak cable and detect variable frequency power supply and directly can remove and not affect other unit and normally work.
When remote termination multiplexer export antenna change into Lous cable time, full backup digital optical fiber direct station of the present invention can have the function of leaking cable fault detect location, concrete enforcement and job step as follows:
Step 1: produce two baseband signals from main digital signal signal processing unit with from digital signal processing unit respectively.During specific implementation, this baseband signal can be CW signal or the modulation signal with certain bandwidth, and the present invention adopts CW signal, but is not limited to this signal type;
Step 2: two baseband signals in step 1, after the conversion of D/A device, become two-way analog signal, and two-way centre frequency is adjusted to certain numerical value.During specific implementation, D/A device can select binary channels D/A device or single channel D/A device, IF-FRE can adopt zero intermediate frequency or non-zero if, the centre frequency of two-way analog signal can identical also can not be identical, in the present invention, the IF-FRE of two-way analog signal is chosen to be 138.24MHz, but is not limited to this frequency;
Step 3: the two-way analog if signal in step 2, enter Lou cable and detect converter unit, intermediate-freuqncy signal is become the radiofrequency signal of two-way different frequency or same frequency, during specific implementation, the frequency values of two-way radiofrequency signal and transmission power level are specifically determined according to system requirements, in the present invention, the frequency range of two-way radiofrequency signal is 700-820MHz, power≤20dBm, but is not limited to this parameter;
Step 4: the two-way radiofrequency signal in step 3, after circulator 1 and circulator 2, becomes a road radiofrequency signal after entering combiner device 4, this radiofrequency signal enters leakage cable after multiplexer coupling; During specific implementation, combiner device 4 can adopt two merits to divide or 3dB electric bridge realizes, and coupler can adopt the different degrees of coupling such as 5dB/10dB/20dB to realize, and the present invention is defined as 10dB, but is not limited to this parameter;
Step 5: the radiofrequency signal entering Lou cable in step 4, breaks down if leak certain part of cable, radiofrequency signal will inevitably be caused to reflect, after other interference signals of multiplexer filtering, leave the radiofrequency signal of relatively pure reflection.During specific implementation, multiplexer adopts cavity body filter to realize, but is not limited to this method for designing; Step 6: by the radiofrequency signal of leaking cable reflection in step 5, after entering combiner device 4, enter circulator 1 and circulator 2 respectively, enters into Lou cable by reverse port and detects converter unit;
Step 7: the two-way radiofrequency signal in step 6, after leaking cable and detecting converter unit, becomes two-way intermediate-freuqncy signal, and after filtering mirror image disturbs after filtering, becomes the intermediate-freuqncy signal that two-way is relatively pure; During specific implementation, frequency conversion system can adopt frequency mixer to realize, and IF-FRE is arranged according to system actual demand, and IF-FRE of the present invention is defined as 184.32MHz, but is not limited to this frequency;
Step 8: the two-way intermediate-freuqncy signal in step 7, enter main digital signal processing unit respectively and from digital signal processing unit, based on the theory of software radio, main digital signal processing unit becomes digital signal through A/D device this signal according to certain sample rate to IFRx2.From digital signal processing unit, this signal, digital signal is become through A/D device according to certain sample rate to IFRx3.During specific implementation, A/D device can select double channel A/D device or single channel A/D device, and 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 9: the two ways of digital signals in step 8 carries out auto-correlation computation with main digital signal processing unit with from the baseband signal of digital signal processing unit its own transmission respectively, calculate counting of the positional distance center frequency point residing for peak value, according to the time of each representative of counting, obtain temporal summation, leak the transmission speed in cable according to electromagnetic wave again, thus obtain the position of Lou cable fault point.During specific implementation, the method can change according to specific implementation, and the present invention adopts auto-correlation algorithm, but is not limited to this algorithm.
It should be noted that about the near-end machine of Hot Spare digital processing complete in the present invention and Light distribation system and remote termination system protection scope, Fig. 2 is that compatible with single port leaks cable or antenna and diversity antenna two kinds of patterns.Leak cable or antenna and this pattern of diversity antenna for single port, refer to Fig. 5, be wherein a kind of distortion, just change the switch mode of power amplifier, this system also belongs to protection scope of the present invention.For the leakage cable system form of dual-port, refer to Fig. 6 and Fig. 7, compared with Fig. 2, just eliminate diversity reception passage, change the connected mode of multiplexer below, remain the one distortion in the present invention, belong to protection scope of the present invention.In addition, two passages in the present invention, support to backup each other, also can two passages separate, support different frequency, become two-band digital processing and Light distribation system, this system also belongs to protection scope of the present invention.And based on multiple frequency ranges that two-band digital processing and Light distribation system are derived, as the digital processing of two or more frequency range and Light distribation system equally also belong to protection scope of the present invention.
Referring to Fig. 8 and Fig. 9, in order to realize the module level backup of each remote termination and near-end machine, adopting the network construction form that internal optical fiber is interconnected or external fiber is cross interconnected.
The invention provides a kind of brand-new full Hot Spare digital processing and Light distribation system, overcome the shortcoming that existing backup digital light compartment system reliability is not high, extend the range of application of full backup digital light compartment system, not only meet the requirement of high reliability in existing mobile communication and private network communication network, and the requirement to multi-frequency-band digital Light distribation system when meeting future communications network Joint construction and sharing.Therefore a kind of brand-new full Hot Spare digital processing proposed by the invention and Light distribation system are in the communication network application higher to reliability requirement, have boundless application prospect.
The announcement of book and instruction according to the above description, those skilled in the art in the invention can also carry out suitable change and amendment to above-mentioned execution mode.Therefore, the present invention is not limited to embodiment disclosed and described above, also should fall in the protection range of claim of the present invention modifications and changes more of the present invention.In addition, although employ some specific terms in this specification, these terms just for convenience of description, do not form any restriction to the present invention.
Claims (5)
1. full Hot Spare digital processing and a Light distribation system, comprises near-end machine and remote termination, it is characterized in that:
Described near-end machine comprises near-end machine antenna, near-end machine diversity antenna, near-end machine Transmit-Receive Unit, near-end machine diversity Transmit-Receive Unit, near-end machine combiner device, near-end machine converter unit, near-end machine interface board, near-end machine power subsystem, near-end machine monitoring unit, near-end machine digital signal processing unit, near-end machine Ethernet processing unit, near-end machine data-interface; Described near-end machine combiner device comprises near-end machine first combiner device and near-end machine second combiner device, described near-end machine converter unit comprises the main converter unit of near-end machine, near-end machine from converter unit, near-end machine power subsystem comprises near-end machine first power subsystem and near-end machine second source unit, described near-end machine digital signal processing unit comprises near-end machine main digital signal processing unit and near-end machine from digital signal processing unit, and described near-end machine data-interface comprises near-end machine first data-interface, near-end machine second data-interface;
Described remote termination comprises 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 subsystem, remote termination converter unit, remote termination data-interface, remote termination combiner device, remote termination electric bridge, remote termination amplifier, multiplexer; Described remote termination digital signal processing unit comprises remote termination main digital signal processing unit and remote termination from digital signal processing unit, described remote termination power subsystem comprises remote termination first power subsystem and remote termination second source unit, described remote termination converter unit comprises the main converter unit of remote termination and remote termination from converter unit, described remote termination data-interface comprises remote termination first data-interface and remote termination second data-interface, and described remote termination amplifier comprises remote termination main amplifier and remote termination from amplifier;
From base stations couple or through near-end machine antenna, after the downlink radio-frequency signal that near-end machine Transmit-Receive Unit receives enters near-end machine combiner device, be divided into multiple signals, enter the main converter unit of near-end machine and near-end machine respectively from converter unit, intermediate-freuqncy signal is become after mixing, near-end machine main digital signal processing unit and near-end machine is entered respectively from digital signal processing unit after near-end machine interface board, near-end machine main digital signal processing unit and near-end machine become baseband signal to the intermediate-freuqncy signal entered from digital signal processing unit after analog-to-digital conversion, this baseband signal with from near-end machine first data-interface and near-end machine second data-interface, and the signal after near-end machine Ethernet processing unit carries out framing together, transfer out after becoming light signal to remote termination, remote termination receives the light signal from near-end machine optical fiber, baseband signal and ethernet signal is become through separating frame after becoming digital signal, wherein ethernet signal is after remote termination Ethernet processing unit, data penetration transmission to remote termination data-interface, or after remote termination antenna and remote termination Transmit-Receive Unit, become intermediate-freuqncy signal, enter remote termination digital signal processing unit and become baseband signal after analog to digital conversion, baseband signal becomes intermediate-freuqncy signal in remote termination digital signal processing unit, radiofrequency signal is become after remote termination converter unit, the main converter unit of remote termination and remote termination enter remote termination electric bridge downstream signal from converter unit after remote termination combiner device, after remote termination main amplifier and remote termination jointly to amplify from amplifier and close road, gone out by remote termination antenna transmission signal after entering remote termination multiplexer.
2. full Hot Spare digital processing according to claim 1 and Light distribation system, it is characterized in that, described remote termination also comprises a leakage cable and detects converter unit, when adopting leakage cable to transmit, leak cable to detect converter unit remote termination main digital signal processing unit and remote termination are become radiofrequency signal from digital signal processing unit intermediate-freuqncy signal out, be coupled to Lou in cable through remote termination multiplexer, carry out leakage cable fault detect location.
3. full Hot Spare digital processing according to claim 1 and Light distribation system, it is characterized in that, in described near-end machine, described near-end machine main digital signal processing unit and described near-end machine pass through interconnected Fiber connection between digital signal processing unit, described near-end machine main digital signal processing unit is by a near-end machine main fiber output signal, and described near-end machine passes through a near-end machine from optical output signal from digital signal processing unit; Described near-end machine main digital signal processing unit and described near-end machine as follows from the backup setting step between the two ways of digital signals and master and slave optical fiber of digital signal processing unit:
(1) judge the whether alarm of near-end machine main digital signal processing unit, if so, go to step (2), if not, then go to step (3);
(2) judge whether the interface of near-end machine main fiber damages, and if so, near-end machine is set to 1 from the digital signal gain of digital signal processing unit, exports near-end machine to from optical fiber after framing; If not, then near-end machine is set to 1 from the digital signal gain of digital signal processing unit, through interconnected Optical Fiber Transmission to near-end machine main digital signal processing unit, exports near-end machine main fiber after framing to;
(3) the whether alarm of the main converter unit of near-end machine is judged, if not, near-end machine main digital signal processing unit exports normal sign position to near-end machine from digital signal processing unit, near-end machine is set to 0 from the digital signal gain of digital signal processing unit, the digital signal gain of near-end machine main digital signal processing unit is set to 1, exports near-end machine main fiber after framing to; If so, near-end machine is set to 1 from the digital signal gain of digital signal processing unit, and near-end machine main digital signal processing unit receives near-end machine from the digital signal of digital signal processing unit through interconnected optical fiber, exports near-end machine main fiber after framing to.
4. full Hot Spare digital processing according to claim 1 and Light distribation system, it is characterized in that, in described remote termination, described remote termination main digital signal processing unit and described remote termination pass through interconnected Fiber connection between digital signal processing unit, described remote termination main digital signal processing unit is by a remote termination main fiber Received signal strength, and described remote termination passes through a remote termination from optical fiber Received signal strength from digital signal processing unit; Described remote termination main digital signal processing unit and described remote termination as follows from the backup setting step between the two ways of digital signals and master and slave optical fiber of digital signal processing unit:
(1) judge the whether alarm of remote termination main digital signal processing unit, if so, go to step (2), if not, then go to step (3);
(2) judge whether the interface of remote termination main fiber damages, and if so, remote termination is set to 1 from the digital signal gain of digital signal processing unit, receive and deliver to remote termination from converter unit from remote termination from the signal of optical fiber; If not, remote termination main digital signal processing unit receives the signal of remote termination main fiber, through interconnected Optical Fiber Transmission to remote termination from digital signal processing unit, gain is set to 1, and delivers to remote termination from converter unit;
(3) the whether alarm of the main converter unit of remote termination is judged, if not, remote termination main digital signal processing unit exports normal sign position to remote termination from digital signal processing unit, remote termination is set to 0 from the digital signal gain of digital signal processing unit, the digital signal gain of remote termination main digital signal processing unit is set to 1, and signal is entered by remote termination main fiber; If so, remote termination main digital signal processing unit receives the signal of remote termination main fiber, through interconnected Optical Fiber Transmission to remote termination from digital signal processing unit, and deliver to remote termination from converter unit.
5. full Hot Spare digital processing according to claim 1 and Light distribation system, it is characterized in that, interconnected by interface board between near-end machine first power subsystem and near-end machine second source unit, between remote termination first power subsystem and remote termination second source unit, during normal work, two power subsystem mean allocation system powers, when any one damages, automatically switch to single power subsystem and power.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106850032A (en) * | 2017-01-19 | 2017-06-13 | 京信通信技术(广州)有限公司 | The redundancy backup near-end machine of digital optical fiber direct station, remote termination and its system |
| 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 |
| CN109412633A (en) * | 2018-09-28 | 2019-03-01 | 广州开信通讯系统有限公司 | Communication equipment and repeater |
| 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 |
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 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106850032A (en) * | 2017-01-19 | 2017-06-13 | 京信通信技术(广州)有限公司 | The redundancy backup near-end machine of digital optical fiber direct station, remote termination and its system |
| 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 |
| CN109412633A (en) * | 2018-09-28 | 2019-03-01 | 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 |
| 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 |
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