CN104883632A - Device and method for realizing VDSL current sharing backward feeding in PON far-end system - Google Patents
Device and method for realizing VDSL current sharing backward feeding in PON far-end system Download PDFInfo
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- CN104883632A CN104883632A CN201510324231.2A CN201510324231A CN104883632A CN 104883632 A CN104883632 A CN 104883632A CN 201510324231 A CN201510324231 A CN 201510324231A CN 104883632 A CN104883632 A CN 104883632A
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Abstract
The invention discloses a device and method for realizing VDSL current sharing backward feeding in a PON far-end system, relating to the technical field of passive optical network. The method includes the following steps that a power supply adapter converts electric signals in a mixed signal sent by a user-side device from a mains supply voltage value to a safe voltage value, and forwards the mixed signal to an optical network unit; a current sharing module in the optical network unit separates the received mixed signal into simulation signals and electric signals, converts the electric signals from the safe voltage value to the work voltage value of the optical network unit, and sends the electric signals to a power supply module; the simulation signals are sent to a DSL module; the power supply module receives the separated electric signals to supply power to the optical network unit, the DSL module receives the separated simulation signals and converts the simulation signals into digital signals; and a GPON module receives the digital signals, modulates and converts the digital signals into optical signals for output. The device and method for realizing VDSL current sharing backward feeding in the PON far-end system reasonably utilize all of the user resources and improve the work efficiency.
Description
Technical field
The present invention relates to passive optical network technique field, specifically be a kind of PON (PassiveOptical Network, EPON) realize the device and method of VDSL (Very-high-bit-rate Digital Subscriber loop, Very High Speed Digital Subscriber Line) current-sharing reverse feeding in far end system.
Background technology
In EPON, in order to balance cost and performance, operator is except excavating DSL (Digital Subscriber Line further, digital subscriber line) beyond copper cash performance, also in the fiber-to-the-home compromise proposal of searching, such as existing commercially Fiber To The Curb, Fiber-To-The-Building, optical fiber is 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, at last 50 meters of fiber entering household, because on-site install the time cost of engineer, adds and knocks wall open and the various expense such as again to fit up again, on average expend up to 3000 dollars.And a lot of user is unwilling wall to pry open, and optical fiber is nuzzled.
For solving the problem, be proposed the work-around solution of FTTdp (fiber to the distribution point, optical fiber is to distributed points).The solution of FTTdp is exactly move optical fiber to the distance nearest from indoor as far as possible, after moving nearest distance to, adopts copper cash to register one's residence.Because for last tens meters or 100 meters, the performance just energy The Gift of Being the Best You Can Be of the shorter copper cash of distance, the VDSL bandwidth simultaneously provided is higher.But, there is following defect in FTTdp: because the reverse feeding technology that designs at present is comparatively complicated and do not possess flow equalizing function, a user therefore can only be specified to carry out reverse feeding, larger to the power demands of this user, can not effectively utilize other user resources, affect operating efficiency.
Summary of the invention
For the defect existed in prior art, the object of the present invention is to provide the device and method realizing VDSL current-sharing reverse feeding in a kind of PON far end system, the present invention reasonably make use of all user resources, improves operating efficiency.
For reaching above object, the technical scheme that the present invention takes is: the device realizing VDSL current-sharing reverse feeding in a kind of PON far end system, PON far end system comprises some optical network units, each optical network unit is connected with at least one user-side device respectively, and the device of the described VDSL of realization current-sharing reverse feeding comprises the supplying adapter be arranged in user-side device and the current-sharing module be arranged in optical network unit, supply module, DSL module and GPON module; Wherein, supplying adapter, for the signal of telecommunication in the mixed signal that user-side device sent, after being converted to safe voltage value, is forwarded to optical network unit by line voltage value; Current-sharing module, the mixed signal for being received by optical network unit is separated into analog signal and the signal of telecommunication, and the signal of telecommunication is converted to the operational voltage value of optical network unit by safe voltage value; Supply module, for receiving the signal of telecommunication after separation, for optical network unit is powered; DSL module, for receiving the analog signal after separation, and converts analog signal to digital signal; GPON module, for receiving described digital signal, and is converted to light signal output by digital signal modulated.
On the basis of technique scheme, PC or the WIFI equipment that described user-side device comprises asymmetric number loop modulator-demodulator and is connected with this asymmetric number loop modulator-demodulator, described supplying adapter is connected with asymmetric number loop modulator-demodulator.
On the basis of technique scheme, described PON far end system also comprises the webmaster, optical line terminal and the optical path separator that are connected successively, and optical path separator is connected with each optical network unit respectively.
On the basis of technique scheme, described current-sharing module comprises connected separative element and current-sharing unit, wherein separative element, and the mixed signal for being received by optical network unit is separated into analog signal and the signal of telecommunication; Current-sharing unit, for being converted to the operational voltage value of optical network unit by safe voltage value by the signal of telecommunication.
On the basis of technique scheme, described DSL module comprises DSP unit, some AFE unit and some LD unit, each AFE unit is connected with two LD unit respectively, DSP unit is connected with each AFE unit respectively, wherein LD unit, for converting the magnitude of voltage of analog signal to bias voltage value; AFE unit, for converting analog signal to digital signal; DSP unit, for control AFE unit and LD unit, each railway digital signal sent by each AFE unit becomes a railway digital signal to export with service convergence.
On the basis of technique scheme, clock unit, memory cell and optical module unit that described GPON module comprises control unit and is connected with this control unit respectively, wherein control unit, for controlling clock unit, memory cell and optical module unit, monitors the digital signal received; Clock unit, for providing operating frequency for control unit; Memory cell, for storing software program; Optical module unit, exports for digital signal modulated being converted to light signal.
On the basis of technique scheme, described memory cell comprises flash memory and double data rate Synchronous Dynamic Random Access Memory.
On the basis of technique scheme, described control unit is connected with DSL module by Gigabit Media stand-alone interface.
On the basis of technique scheme, the scope of described safe voltage value is 38V ~ 72V; The operational voltage value of described optical network unit is 13.5V.
The invention also discloses a kind of method based on realizing VDSL current-sharing reverse feeding in the PON far end system of said apparatus, comprise the following steps: the signal of telecommunication in the mixed signal that user-side device sends by step S1. supplying adapter, after being converted to safe voltage value by line voltage value, forward mixed signal to optical network unit; The mixed signal received is separated into analog signal and the signal of telecommunication by the current-sharing module in step S2. optical network unit, the signal of telecommunication is converted to the operational voltage value of optical network unit by safe voltage value, and is sent to supply module, jump to step S3; Meanwhile, analog signal is sent to DSL module, jumps to step S4; Step S3. supply module receives the signal of telecommunication after being separated, and for optical network unit is powered, terminates; Step S4.DSL module receives the analog signal after being separated, and converts analog signal to digital signal; Step S5.GPON module receives described digital signal, and digital signal modulated is converted to light signal output, terminates.
Beneficial effect of the present invention is:
1, in the present invention by arranging current-sharing module, the current value that the multiple user-side device be connected with optical network unit provide is done equivalent current-sharing, each user only need provide smaller electric current and can not have the external output current of perception, reasonably make use of all user resources, this improves operating efficiency.
2, pass through in the present invention to arrange control unit in GPON module, can monitor the digital signal received, if there is user to stop powering to optical network unit, control unit will be monitored less than corresponding digital signal, then control unit stops sending data to this user, improves operating efficiency.
Accompanying drawing explanation
Fig. 1 is the structured flowchart realizing VDSL current-sharing reverse feeding device in the embodiment of the present invention in PON far end system;
Fig. 2 is the structured flowchart that the embodiment of the present invention is arranged in optical network unit;
Fig. 3 is the method flow diagram realizing VDSL current-sharing reverse feeding in the embodiment of the present invention in PON far end system.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
Shown in Figure 1, embodiments provide the device realizing VDSL current-sharing reverse feeding in a kind of PON far end system, PON far end system comprises some optical network units, each optical network unit is connected with at least one user-side device respectively, preferably, each optical network unit is connected with 1 ~ 8 user-side device respectively, and PON far end system also comprises the webmaster, optical line terminal and the optical path separator that are connected successively, and optical path separator is connected with each optical network unit respectively.Concrete, PC or the WIFI equipment that user-side device comprises DSL Modem (asymmetric number loop modulator-demodulator) and is connected with this asymmetric number loop modulator-demodulator, supplying adapter is connected with asymmetric number loop modulator-demodulator.
The device realizing VDSL current-sharing reverse feeding comprises the PSE (Power Sourcing Equipment, supplying adapter) be arranged in user-side device and the current-sharing module, supply module, DSL module and the GPON module that are arranged in optical network unit; Supplying adapter, for the signal of telecommunication in the mixed signal that user-side device sent, after being converted to safe voltage value, is forwarded to optical network unit by line voltage value; Wherein, line voltage value is 220V, and the scope of safe voltage value is 38V ~ 72V, is preferably the safe voltage value of 60V; Current-sharing module, the mixed signal for being received by optical network unit is separated into analog signal and the signal of telecommunication, and the signal of telecommunication is converted to the operational voltage value of optical network unit by safe voltage value, and wherein, the operational voltage value of optical network unit is 13.5V; Supply module, for receiving the signal of telecommunication after separation, for optical network unit is powered; DSL module, for receiving the analog signal after separation, and converts analog signal to digital signal; GPON module, for receiving described digital signal, and is converted to light signal output by digital signal modulated.
Shown in Figure 2, current-sharing module comprises connected separative element and current-sharing unit, wherein, separative element, the mixed signal for being received by optical network unit is separated into analog signal and the signal of telecommunication; Current-sharing unit, for being converted to the operational voltage value of optical network unit by safe voltage value by the signal of telecommunication.
DSL module comprises DSP unit, some AFE unit and some LD unit, in the present embodiment, be provided with 1 DSP unit, 2 AFE unit and 4 LD unit, each AFE unit is connected with two LD unit respectively, DSP unit is connected with each AFE unit respectively, wherein, LD unit, for converting the magnitude of voltage of analog signal to bias voltage value, concrete, this bias voltage value is 14V voltage, can the decay of anti-stop signal in transmitting procedure, improves transmission range; AFE unit, for converting analog signal to digital signal; DSP unit, for control AFE unit and LD unit, each railway digital signal sent by each AFE unit becomes a railway digital signal to export with service convergence.
Clock unit, memory cell and optical module unit that GPON module comprises control unit and is connected with this control unit respectively, concrete, control unit is connected with DSL module by RGMII (ReducedGigabit Media Independent Interface, Gigabit Media stand-alone interface).Wherein, control unit, for controlling clock unit, memory cell and optical module unit, monitor the digital signal received, if there is user to stop powering to optical network unit, control unit will be monitored less than corresponding digital signal, then stop sending data to this user, improve operating efficiency.Control unit is specially PON chip BCM68380; Clock unit, for providing operating frequency for control unit; Memory cell, for storing software program, concrete, memory cell comprises flash memory and double data rate Synchronous Dynamic Random Access Memory.Optical module unit, exporting for digital signal modulated being converted to light signal, being 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 a kind of method based on realizing VDSL current-sharing reverse feeding in the PON far end system of said apparatus, comprises the following steps:
The signal of telecommunication in the mixed signal that user-side device sends by step S1. supplying adapter, after being converted to safe voltage value, forwards mixed signal to optical network unit by line voltage value.
The mixed signal received is separated into analog signal and the signal of telecommunication by the current-sharing module in step S2. optical network unit, the signal of telecommunication is converted to the operational voltage value of optical network unit by safe voltage value, and is sent to supply module, jump to step S3; Meanwhile, analog signal is sent to DSL module, jumps to step S4.
Step S3. supply module receives the signal of telecommunication after being separated, and for optical network unit is powered, terminates.
Step S4.DSL module receives the analog signal after being separated, and converts analog signal to digital signal.
Step S5.GPON module receives described digital signal, and digital signal modulated is converted to light signal output, terminates.
The present invention is not limited to above-mentioned execution mode, and for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications are also considered as within protection scope of the present invention.The content be not described in detail in this specification belongs to the known prior art of professional and technical personnel in the field.
Claims (10)
1. in a PON far end system, realize the device of VDSL current-sharing reverse feeding, PON far end system comprises some optical network units, each optical network unit is connected with at least one user-side device respectively, it is characterized in that: the device of the described VDSL of realization current-sharing reverse feeding comprises the supplying adapter be arranged in user-side device and the current-sharing module be arranged in optical network unit, supply module, DSL module and GPON module; Wherein,
Supplying adapter, for the signal of telecommunication in the mixed signal that user-side device sent, after being converted to safe voltage value, is forwarded to optical network unit by line voltage value;
Current-sharing module, the mixed signal for being received by optical network unit is separated into analog signal and the signal of telecommunication, and the signal of telecommunication is converted to the operational voltage value of optical network unit by safe voltage value;
Supply module, for receiving the signal of telecommunication after separation, for optical network unit is powered;
DSL module, for receiving the analog signal after separation, and converts analog signal to digital signal;
GPON module, for receiving described digital signal, and is converted to light signal output by digital signal modulated.
2. in PON far end system as claimed in claim 1, realize the device of VDSL current-sharing reverse feeding, it is characterized in that: PC or the WIFI equipment that described user-side device comprises asymmetric number loop modulator-demodulator and is connected with this asymmetric number loop modulator-demodulator, described supplying adapter is connected with asymmetric number loop modulator-demodulator.
3. in PON far end system as claimed in claim 1, realize the device of VDSL current-sharing reverse feeding, it is characterized in that: described PON far end system also comprises the webmaster, optical line terminal and the optical path separator that are connected successively, and optical path separator is connected with each optical network unit respectively.
4. realize the device of VDSL current-sharing reverse feeding in PON far end system as claimed in claim 1, it is characterized in that: described current-sharing module comprises connected separative element and current-sharing unit, wherein
Separative element, the mixed signal for being received by optical network unit is separated into analog signal and the signal of telecommunication;
Current-sharing unit, for being converted to the operational voltage value of optical network unit by safe voltage value by the signal of telecommunication.
5. in PON far end system as claimed in claim 1, realize the device of VDSL current-sharing reverse feeding, it is characterized in that: described DSL module comprises DSP unit, some AFE unit and some LD unit, each AFE unit is connected with two LD unit respectively, DSP unit is connected with each AFE unit respectively, wherein
LD unit, for converting the magnitude of voltage of analog signal to bias voltage value;
AFE unit, for converting analog signal to digital signal;
DSP unit, for control AFE unit and LD unit, each railway digital signal sent by each AFE unit becomes a railway digital signal to export with service convergence.
6. realize the device of VDSL current-sharing reverse feeding in PON far end system as claimed in claim 1, it is characterized in that: clock unit, memory cell and optical module unit that described GPON module comprises control unit and is connected with this control unit respectively, wherein
Control unit, for controlling clock unit, memory cell and optical module unit, monitors the digital signal received;
Clock unit, for providing operating frequency for control unit;
Memory cell, for storing software program;
Optical module unit, exports for digital signal modulated being converted to light signal.
7. realize the device of VDSL current-sharing reverse feeding in PON far end system as claimed in claim 6, it is characterized in that: described memory cell comprises flash memory and double data rate Synchronous Dynamic Random Access Memory.
8. realize the device of VDSL current-sharing reverse feeding in PON far end system as claimed in claim 6, it is characterized in that: described control unit is connected with DSL module by Gigabit Media stand-alone interface.
9. realize the device of VDSL current-sharing reverse feeding in PON far end system as claimed in claim 1, it is characterized in that: the scope of described safe voltage value is 38V ~ 72V; The operational voltage value of described optical network unit is 13.5V.
10. realize the method for VDSL current-sharing reverse feeding in the PON far end system based on device described in any one of claim 1 to 9, it is characterized in that, comprise the following steps:
The signal of telecommunication in the mixed signal that user-side device sends by step S1. supplying adapter, after being converted to safe voltage value, forwards mixed signal to optical network unit by line voltage value;
The mixed signal received is separated into analog signal and the signal of telecommunication by the current-sharing module in step S2. optical network unit, the signal of telecommunication is converted to the operational voltage value of optical network unit by safe voltage value, and is sent to supply module, jump to step S3; Meanwhile, analog signal is sent to DSL module, jumps to step S4;
Step S3. supply module receives the signal of telecommunication after being separated, and for optical network unit is powered, terminates;
Step S4.DSL module receives the analog signal after being separated, and converts analog signal to digital signal;
Step S5.GPON module receives described digital signal, and digital signal modulated is converted to light signal output, terminates.
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