CN104883632B - Realize that VDSL flows the device and method of reverse feeding in PON far end system - Google Patents
Realize that VDSL flows the device and method of reverse feeding in PON far end system Download PDFInfo
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- CN104883632B CN104883632B CN201510324231.2A CN201510324231A CN104883632B CN 104883632 B CN104883632 B CN 104883632B CN 201510324231 A CN201510324231 A CN 201510324231A CN 104883632 B CN104883632 B CN 104883632B
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Abstract
The invention discloses realize that VDSL flows the device and method of reverse feeding in a kind of PON far end system, it is related to passive optical network technique field, this method comprises: the electric signal in the mixed signal that supplying adapter sends user-side device, after being converted to safe voltage value by line voltage value, forwarding mixed signal to optical network unit；The mixed signal received is separated into analog signal and electric signal by the current-sharing module in optical network unit, and electric signal is converted to the operating voltage value of optical network unit by safe voltage value, and is sent to power supply module；Meanwhile analog signal is sent to DSL module；Power supply module receives the electric signal after separation, powers for optical network unit；DSL module receives the analog signal after separation, and converts analog signals into digital signal；GPON module receives the digital signal, and digital signal modulated is converted to optical signal output.All user resources of reasonable utilization of the present invention, improve work efficiency.
Description
Technical field
The present invention relates to passive optical network technique fields, are specifically a kind of PON (Passive Optical
Network, passive optical network) VDSL (Very-high-bit-rate Digital Subscriber is realized in far end system
Loop, Very High Speed Digital Subscriber Line) flow reverse feeding device and method.
Background technique
In passive optical network, in order to balance cost and performance, operator is in addition to further excavating DSL (Digital
Subscriber Line, digital subscriber line) other than copper wire performance, fiber-to-the-home compromise proposal also is being found, such as now
Fiber To The Curb in the market, fiber to the floor, optical fiber to basement etc..But the cost that optical fiber is directly registered one's residence is very high, such as
In developed country, a family family is at last 50 meters of fiber entering household, because on-siteing install the time cost of engineer, along with striking
It opens wall and the various expenses such as fits up again again, it is average to expend up to 3000 dollars.And many users are reluctant to wall to prize
It opens, optical fiber is nuzzled.
To solve the above problems, being proposed FTTdp (fiber to the distribution point, optical fiber to distribution
Point) work-around solution.The solution of FTTdp be exactly optical fiber is drawn as far as possible to from it is indoor it is nearest with a distance from, draw to it is nearest away from
From rear, registered one's residence using copper wire.Because as soon as the performance of the shorter copper wire of distance can accomplish most for last tens meters or hundred meters
It is good, while the VDSL bandwidth provided is higher.But FTTdp have the following deficiencies: the reverse feeding technology due to designing at present compared with
Be complicated and do not have flow equalizing function, therefore a user can only be specified to carry out reverse feeding, to the power demands of the user compared with
Greatly, other users resource cannot be efficiently used, working efficiency is influenced.
Summary of the invention
In view of the deficiencies in the prior art, the purpose of the present invention is to provide realize in a kind of PON far end system
VDSL flows the device and method of reverse feeding, and all user resources of reasonable utilization of the present invention improve work efficiency.
To achieve the above objectives, the technical solution adopted by the present invention is that: realize that VDSL flows instead in a kind of PON far end system
To the device of feed, PON far end system includes several optical network units, each optical network unit respectively at least one user side
Device be connected, the device that the realization VDSL flows reverse feeding include the supplying adapter being set in user-side device and
Current-sharing module, power supply module, DSL module and the GPON module being set in optical network unit；Wherein, supplying adapter is used for
Electric signal in the mixed signal of user-side device transmission is forwarded to light after being converted to safe voltage value by line voltage value
Network unit；Current-sharing module, the mixed signal for receiving optical network unit are separated into analog signal and electric signal, and will
Electric signal is converted to the operating voltage value of optical network unit by safe voltage value；Power supply module, for receiving the telecommunications after separating
Number, it powers for optical network unit；DSL module for receiving the analog signal after separating, and converts analog signals into digital letter
Number；GPON module is converted to optical signal output for receiving the digital signal, and by digital signal modulated.
Based on the above technical solution, the user-side device includes asymmetric number loop modulation /demodulation
Device and the PC being connected with modem with the asymmetric number loop or WIFI equipment, the supplying adapter
It is connected with asymmetric number loop with modem.
Based on the above technical solution, the PON far end system further includes the network management being sequentially connected, optical line terminal
And optical path separator, and optical path separator is connected with each optical network unit respectively.
Based on the above technical solution, the current-sharing module includes connected separative unit and flows unit, wherein
Separative unit, the mixed signal for receiving optical network unit are separated into analog signal and electric signal；Unit is flowed, is used for
Electric signal is converted to the operating voltage value of optical network unit by safe voltage value.
Based on the above technical solution, the DSL module includes DSP unit, several AFE units and several LD mono-
Member, each AFE unit are connected with two LD units respectively, and DSP unit is connected with each AFE unit respectively, wherein LD unit, use
In the voltage value of analog signal is converted into bias voltage value；AFE unit, for converting analog signals into digital signal；DSP
Unit, for controlling AFE unit and LD unit, each railway digital signal and service convergence that each AFE unit is sent are at one
The output of railway digital signal.
Based on the above technical solution, the GPON module include control unit and respectively with the control unit phase
Clock unit, storage unit and optical module unit even, wherein control unit, for controlling clock unit, storage unit and light
Modular unit monitors the digital signal received；Clock unit, for providing working frequency for control unit；Storage unit is used
In storage software program；Optical module unit, for digital signal modulated to be converted to optical signal output.
Based on the above technical solution, the storage unit includes flash memory and double data rate synchronous dynamic
Random access memory.
Based on the above technical solution, described control unit passes through Gigabit Media stand-alone interface and DSL module phase
Even.
Based on the above technical solution, the range of the safe voltage value is 38V~72V；The optical network unit
Operating voltage value be 13.5V.
Realize that VDSL flows the side of reverse feeding in the invention also discloses a kind of PON far end system based on above-mentioned apparatus
Method, comprising the following steps: the electric signal in mixed signal that step S1. supplying adapter sends user-side device, by alternating current
After voltage value is converted to safe voltage value, forwarding mixed signal to optical network unit；Stream mould in step S2. optical network unit
The mixed signal received is separated into analog signal and electric signal by block, and electric signal is converted to optical-fiber network list by safe voltage value
The operating voltage value of member, and it is sent to power supply module, go to step S3；Meanwhile analog signal is sent to DSL module, it jumps
Go to step S4；Step S3. power supply module receives the electric signal after separation, powers for optical network unit, terminates；Step S4.DSL
Module receives the analog signal after separation, and converts analog signals into digital signal；Step S5.GPON module receives the number
Word signal, and digital signal modulated is converted into optical signal output, terminate.
The beneficial effects of the present invention are:
1, by setting current-sharing module in the present invention, the electricity that the multiple user-side devices being connected with optical network unit are provided
Flow valuve do it is equivalent flow, each user need to only provide smaller electric current and will not have perception externally output electric current, reasonable benefit
With all user resources, this improves working efficiencies.
2, the digital signal received can be monitored, if having by the way that control unit is arranged in GPON module in the present invention
User stops powering to optical network unit, and control unit will be monitored less than corresponding digital signal, then control unit stops to this
User sends data, improves work efficiency.
Detailed description of the invention
Fig. 1 is to realize that VDSL flows the structural block diagram of reverse feeding device in PON far end system in the embodiment of the present invention；
Fig. 2 is that the embodiment of the present invention is located at the structural block diagram in optical network unit；
Fig. 3 is to realize that VDSL flows the method flow diagram of reverse feeding in PON far end system in the embodiment of the present invention.
Specific embodiment
Invention is further described in detail with reference to the accompanying drawings and embodiments.
Shown in Figure 1, the embodiment of the invention provides realize that VDSL flows reverse feeding in a kind of PON far end system
Device, PON far end system include several optical network units, each optical network unit respectively at least one user-side device phase
Even, it is preferred that each optical network unit is connected with 1~8 user-side device respectively, and PON far end system further includes being sequentially connected
Network management, optical line terminal and optical path separator, and optical path separator is connected with each optical network unit respectively.Specifically, with
Family side device include DSL Modem (asymmetric number loop modem) and with the asymmetric number ring
The PC or WIFI equipment, supplying adapter and asymmetric number loop modem that road modem is connected
It is connected.
Realizing that VDSL flows the device of reverse feeding includes PSE (the Power Sourcing being set in user-side device
Equipment, supplying adapter) and it is set to current-sharing module, power supply module, DSL module and GPON in optical network unit
Module；Supplying adapter, the electric signal in mixed signal for sending user-side device are converted to peace by line voltage value
After full voltage value, it is forwarded to optical network unit；Wherein, line voltage value is 220V, and the range of safe voltage value is 38V~72V,
The safe voltage value of preferably 60V；Current-sharing module, the mixed signal for receiving optical network unit are separated into analog signal
And electric signal, and electric signal is converted to the operating voltage value of optical network unit by safe voltage value, wherein optical network unit
Operating voltage value is 13.5V；Power supply module is powered for receiving the electric signal after separating for optical network unit；DSL module is used
Analog signal after receiving separation, and convert analog signals into digital signal；GPON module, for receiving the number letter
Number, and digital signal modulated is converted into optical signal output.
Shown in Figure 2, current-sharing module includes connected separative unit and flows unit, wherein separative unit, being used for will
The mixed signal that optical network unit receives is separated into analog signal and electric signal；Unit is flowed, is used for electric signal by safety
Voltage value is converted to the operating voltage value of optical network unit.
DSL module includes DSP unit, several AFE units and several LD units, in the present embodiment, be equipped with 1 DSP unit,
2 AFE units and 4 LD units, each AFE unit are connected with two LD units respectively, and DSP unit is mono- with each AFE respectively
Member is connected, wherein LD unit, for the voltage value of analog signal to be converted into bias voltage value, specifically, the bias voltage value
For 14V voltage, can decaying of the anti-stop signal in transmission process, improve transmission range；AFE unit is used for analog signal
It is converted into digital signal；DSP unit, for controlling AFE unit and LD unit, each railway digital that each AFE unit is sent
Signal and service convergence are exported at digital signal all the way.
GPON module includes control unit and the clock unit being connected respectively with the control unit, storage unit and optical mode
Module unit, specifically, control unit by RGMII (Reduced Gigabit Media Independent Interface,
Gigabit Media stand-alone interface) it is connected with DSL module.Wherein, control unit, for controlling clock unit, storage unit and light
Modular unit monitors the digital signal received, if having user stop to optical network unit power, control unit will monitor less than
Corresponding digital signal then stops sending data to the user, improve work efficiency.Control unit is specially PON chip
BCM68380；Clock unit, for providing working frequency for control unit；Storage unit, for storing software program, specifically
, storage unit includes flash memory and double data rate Synchronous Dynamic Random Access Memory.Optical module unit, being used for will
Digital signal modulated is converted to optical signal output, specially GPON (Gigabit-Capable Passive Optical
Network, gigabit passive optical network) optical module.
Shown in Figure 3, the embodiment of the present invention also provides in a kind of PON far end system based on above-mentioned apparatus and realizes VDSL
Flow the method for reverse feeding, comprising the following steps:
The electric signal in mixed signal that step S1. supplying adapter sends user-side device is turned by line voltage value
After being changed to safe voltage value, forwarding mixed signal to optical network unit.
The mixed signal received is separated into analog signal and telecommunications by the current-sharing module in step S2. optical network unit
Number, electric signal is converted to the operating voltage value of optical network unit, and be sent to power supply module by safe voltage value, jumps to step
Rapid S3；Meanwhile analog signal is sent to DSL module, go to step S4.
Step S3. power supply module receives the electric signal after separation, powers for optical network unit, terminates.
Step S4.DSL module receives the analog signal after separation, and converts analog signals into digital signal.
Step S5.GPON module receives the digital signal, and digital signal modulated is converted to optical signal output, knot
Beam.
The present invention is not limited to the above-described embodiments, for those skilled in the art, is not departing from
Under the premise of the principle of the invention, several improvements and modifications can also be made, these improvements and modifications are also considered as protection of the invention
Within the scope of.The content being not described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.
Claims (8)
1. realizing that VDSL flows the device of reverse feeding in a kind of PON far end system, PON far end system includes several optical-fiber network lists
Member, each optical network unit are connected at least one user-side device respectively, it is characterised in that: the realization VDSL flows reversely
The device of feed include the supplying adapter being set in user-side device and the current-sharing module being set in optical network unit,
Power supply module, DSL module and GPON module, the DSL module include DSP unit, several AFE units and several LD units, often
A AFE unit is connected with two LD units respectively, and DSP unit is connected with each AFE unit respectively；Wherein,
Supplying adapter, the electric signal in mixed signal for sending user-side device are converted to peace by line voltage value
After full voltage value, it is forwarded to optical network unit；
Current-sharing module, the mixed signal for receiving optical network unit are separated into analog signal and electric signal, and by telecommunications
The operating voltage value that optical network unit number is converted to by safe voltage value, to the multiple user-side devices being connected with optical network unit
The current value of offer, which is done, equivalent to flow；
Power supply module is powered for receiving the electric signal after separating for optical network unit；
DSL module for receiving the analog signal after separating, and converts analog signals into digital signal；
GPON module is converted to optical signal output for receiving the digital signal, and by digital signal modulated；
LD unit, for the voltage value of analog signal to be converted into bias voltage value；
AFE unit, for converting analog signals into digital signal；
DSP unit, for controlling AFE unit and LD unit, each railway digital signal and business that each AFE unit is sent converge
It is polymerized to digital signal output all the way；
The GPON module includes control unit and the clock unit being connected respectively with the control unit, storage unit and optical mode
Module unit, wherein
Control unit monitors the digital signal received for controlling clock unit, storage unit and optical module unit, if having
User stops powering to the optical network unit, and described control unit is monitored less than corresponding digital signal, then stops to the use
Family sends data；
Clock unit, for providing working frequency for control unit；
Storage unit, for storing software program；
Optical module unit, for digital signal modulated to be converted to optical signal output.
2. realizing that VDSL flows the device of reverse feeding in PON far end system as described in claim 1, it is characterised in that: institute
User-side device is stated to include asymmetric number loop modem and adjust with the asymmetric number loop
The connected PC of modulator-demodulator or WIFI equipment, the supplying adapter and asymmetric number loop modem phase
Even.
3. realizing that VDSL flows the device of reverse feeding in PON far end system as described in claim 1, it is characterised in that: institute
Stating PON far end system further includes the network management, optical line terminal and optical path separator being sequentially connected, and optical path separator is respectively and often
A optical network unit is connected.
4. realizing that VDSL flows the device of reverse feeding in PON far end system as described in claim 1, it is characterised in that: institute
Current-sharing module is stated to include connected separative unit and flow unit, wherein
Separative unit, the mixed signal for receiving optical network unit are separated into analog signal and electric signal；
Unit is flowed, for electric signal to be converted to the operating voltage value of optical network unit by safe voltage value.
5. realizing that VDSL flows the device of reverse feeding in PON far end system as described in claim 1, it is characterised in that: institute
Stating storage unit includes flash memory and double data rate Synchronous Dynamic Random Access Memory.
6. realizing that VDSL flows the device of reverse feeding in PON far end system as described in claim 1, it is characterised in that: institute
Control unit is stated to be connected by Gigabit Media stand-alone interface with DSL module.
7. realizing that VDSL flows the device of reverse feeding in PON far end system as described in claim 1, it is characterised in that: institute
The range for stating safe voltage value is 38V~72V；The operating voltage value of the optical network unit is 13.5V.
8. realizing that VDSL flows the side of reverse feeding in the PON far end system based on any one of claim 1 to 7 described device
Method, which comprises the following steps:
The electric signal in mixed signal that step S1. supplying adapter sends user-side device, is converted to by line voltage value
After safe voltage value, forwarding mixed signal to optical network unit；
The mixed signal received is separated into analog signal and electric signal by the current-sharing module in step S2. optical network unit, will
Electric signal is converted to the operating voltage value of optical network unit by safe voltage value, and is sent to power supply module, and go to step S3；
Meanwhile analog signal is sent to DSL module, go to step S4；
Step S3. power supply module receives the electric signal after separation, powers for optical network unit, terminates；
Step S4.DSL module receives the analog signal after separation, and converts analog signals into digital signal；
Step S5.GPON module receives the digital signal, and digital signal modulated is converted to optical signal output, terminates.
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| EP3560116B1 (en) * | 2016-12-21 | 2021-12-22 | British Telecommunications Public Limited Company | Network node |
| CN106992919A (en) * | 2017-03-31 | 2017-07-28 | 信阳师范学院 | FTTdp+GDSL group network systems |
| CN108322369A (en) * | 2018-01-30 | 2018-07-24 | 烽火通信科技股份有限公司 | A kind of method and device for realizing G.FAST accesses on copper wire and optical fiber |
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