CN109982171A - One kind can zoom out multi-hop optical access network and intelligent management system - Google Patents
One kind can zoom out multi-hop optical access network and intelligent management system Download PDFInfo
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- CN109982171A CN109982171A CN201910212849.8A CN201910212849A CN109982171A CN 109982171 A CN109982171 A CN 109982171A CN 201910212849 A CN201910212849 A CN 201910212849A CN 109982171 A CN109982171 A CN 109982171A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/0079—Operation or maintenance aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/0079—Operation or maintenance aspects
- H04Q2011/0081—Fault tolerance; Redundancy; Recovery; Reconfigurability
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Optical Communication System (AREA)
- Small-Scale Networks (AREA)
Abstract
The invention discloses one kind can zoom out multi-hop optical access network and intelligent management system.The system includes that can zoom out intelligent soft exchange device, and working optical fibre protects optical fiber, smart remote node one, smart remote node two.The intelligent soft exchange device that zooms out that the present invention is located at the end OLT integrates light amplification and network intelligence monitoring management function, it is the energy supply of distal end smart remote node by pump light residual power, can zoom out using pump light the information exchange of intelligent soft exchange device and smart remote node, multihop network framework is realized by the reasonable splitting ratio of setting smart remote node, and it develops link protection mechanism and quickly repairs optical fiber link failure, cost compared with the prior art, intelligent acess distance and accessing user's number are expanded, the end OLT is realized to the intelligent management of distal end and user terminal.
Description
Technical field
The invention belongs to technical field of optical fiber communication, and multi-hop optical access network and intelligent management system can be zoomed out by being related to one kind.
Background technique
It proposed to merge entity physical world with virtual network in Germany " industry 4.0 " strategy from 2013, form number
After the target for changing product and service new model, " made in China 2025 " strategy in 2015 also proposed information-based deep with industrialization
Degree fusion, gives priority to the target of generation information technology, emphasizes to promote Chinese manufacturing by " internet+industry " mode
To building information physical system (CPS) direction upgrading and transformation." 5G mobile communication ", " cloud computing, " big data ", " Internet of Things " etc.
Generation information technology provides advanced technological means to construct all kinds of CPS.Passive optical network (PON) is to realize the end CPS
Converge the core network architecture of magnanimity physical message.
ITU-T has tentatively completed the formulation of next-generation optical-fiber network (NG-PON2) G.989 series standard, NG- in 2016
Select TWDM-PON as main technical solution in PON2 standard, it is intended to make full use of traditional PON technology in device level
Long-term technology accumulation carries out upgrading to existing optical network infrastructure, and can coexist in traditional GPON/XG-PON
The optical distribution network that oneself has realizes the smooth evolution of access net.There are three significant changes compared with existing network by NG-PON2: the
One, NG-PON2 system requirements use the optical transceiver of Wavelength tunable in OLT and ONU end；Second, NG-PON2 system transmission range
Farther (40km), splitting ratio is bigger (being greater than 1:256), and in order to meet the path loss grade (29-35dB) of existing PON, having must
Optical Amplification Technology is added；Third, the type of business and mode that NG-PON2 system is supported have occurred huge variation, not only prop up
It holds traditional broadband access (FTTH, FTTB), and 5G mobile communication PtP-WDM will also be based on NG-PON2.
While NG-PON2 is strided forward towards targets such as " high-speed, large capacity, low latencies ", user accesses scale will more
Come huger, the quality requirements of all kinds of services and business are higher and higher, and the following network management and integrity problem are increasingly
It is prominent, thus propose practicable network management and protection mechanism, research and development meet the Intelligence network management system of NG-PON2 standard
System and device are extremely urgent.
Summary of the invention
In order to solve the technical issues of above-mentioned background technique is mentioned, the invention proposes one kind can zoom out multi-hop optical access network
And intelligent management system.
In order to achieve the above technical purposes, technical solution of the present invention are as follows:
One kind can zoom out multi-hop optical access network and intelligent management system, which includes NG-PON2 OLT, can zoom out intelligence
Soft exchange device, working optical fibre protect optical fiber, smart remote node one, smart remote node two, branch optical fibers and all kinds of
ONU。
Further, can zoom out intelligent soft exchange device includes two input terminals, passes through optical fiber and cable connection NG- respectively
PON2 OLT；It includes two output ends that intelligent soft exchange device, which can be zoomed out, and two output ends pass through working optical fibre and protection light respectively
Fibre is connected to smart remote node one；
Further, smart remote node one is intermediate node, includes two class output ports, and one kind is branch output end
Mouthful, all kinds of ONU are connected by branch optical fibers, one kind is bypass output port, is connected respectively by working optical fibre with protection optical fiber
To smart remote node two；
Further, smart remote node two is endpoint node, only includes dropping output port, is connected by branch optical fibers
All kinds of ONU.
Further, can zoom out intelligent soft exchange device includes multiple raman pump light sources, OTDR module, intelligent network pipe
Module is managed, photoreceiver protects switching module and multiple wavelength division multiplexers (WDM).Intelligent soft exchange device can be zoomed out to contain
The pump light source of multiple wavelength believes the multi-wavelength downlink light that NG-PON2 OLT is sent using stimulated Raman scattering (SRS) effect
It number amplifies；Intelligent soft exchange device can be zoomed out can detect optical fiber link failure using embedded OTDR module；
Intelligence network management module is responsible for carrying out information exchange, processing with NG-PON2 OLT Network Management System and smart remote node
It is requested from NG-PON2 OLT network management system monitors, sends monitoring and management information to smart remote node, collected and divide
Analysis processing feeds back to NG-PON2 OLT Network Management System from smart remote node status information, and by network state；Intelligence
Can network management module according to link state the combination distant-end node state of OTDR module feedback, by protecting switching module to net
Network failure is repaired.
Further, Intelligence network management module includes interface adaptation module, central processing unit (CPU), pumping driving mould
Block, network monitoring module and link protection module.Interface adaptation module is responsible for Intelligence network management module and NG-PON2 OLT net
The data communication of network management system, pumping drive module will be for that will control modulates information to raman pump light source, network monitor
Module is used to handle the network state information from OTDR and distal end intelligent node feedback, and link protection module is for switching light
Fine Protection path.
Further, smart remote node one includes that light energy reception and energy-storage module, low power consumption control module, light are opened
Light, splitter and wavelength division multiplexer.Light energy receives and energy-storage module is for receiving raman pump light remnants optical power and converting
It is the power supply of distal end intelligent node for electric energy；Low power consumption control module is handled for receiving from can zoom out intelligent soft exchange device
Control information, collect and survey and come from each ONU status information, and send back and can zoom out intelligent soft exchange device, also according to can draw
The information exchange of remote intelligence soft exchange device, controls photoswitch, intelligent switching fiber protection paths.
Further, low power consumption control module includes photoreceiver (Rx), optical transmitter (Tx), wavelengthtunable photoreceiver
(Tunable Rx) and microprocessor.Rx be used for receive can zoom out spread out of in intelligent soft exchange device be modulated at pump light source
On control signal；Tunable Rx receives passback data channel (λ by tuning wavelength respectivelyd) in a certain wavelength channel shape
State information；Tx is monitoring and controlling channels (λp) light source, it is controlled by microprocessor by collected network state at smart remote node
Information, which is sent back, can zoom out intelligent soft exchange device.
Further, smart remote node two, which eliminates, transmits required bypass output port for next node, other
Function is similar with smart remote node one.
Further, which includes and is not limited to two smart remote nodes, can in the case where power budget allows
With the multihop architecture being connected using more smart remote nodes.
Multi-hop optical access network and intelligent management system intelligent management, including following procedure are zoomed out based on above-mentioned:
Control and status information interactive process: monitoring information is sent to and can zoom out by NG-PON2 OLT Network Management System
Intelligence network management module in intelligent soft exchange device, Intelligence network management module drive the monitoring information received by pumping
Dynamic to be modulated on raman pump light, smart remote node receives remnant Raman pump light by photoreceiver and obtains monitoring information；
Smart remote node is received by the photoreceiver of Wavelength tunable comprising ONU end status information in each wavelength signals, and is passed through
Optical transmitter, which sends back the status information of node and ONU end, can zoom out intelligent soft exchange device；Intelligent soft exchange dress can be zoomed out
The status information that middle photoreceiver receiving node is sent is set, sends the end NG-PON2 OLT network back to by Intelligence network management module
Management system.
Management process: Intelligence network management module is capable of handling the monitoring information of the end NG-PON2 OLT Network Management System,
Network is managed；Intelligence network management module can adjust pump light source power, control data-signal gain amplifier；Intelligence
The link-state information that network management module can be returned according to OTDR, judges link failure, starts link protection function；Intelligence
Network management module can control distal end intelligent node using pumping optical channel and monitoring and controlling channels, acquire distant-end node and ONU end
Status information is managed network.
Protection process: once link failure occurs for trunk optical fiber in network, OTDR can detect failure, network monitor
Module monitors occur to failure, start network protection function.Intelligent soft exchange device and each distal end intelligent node can be zoomed out first
It is communicated, if the back information of a certain distal end intelligent node can not be received, the node will be connected directly in network
Photoswitch be switched to Protection path；At the same time, which, which can not receive, can zoom out intelligent soft exchange device
The photoswitch that the smart remote node is connected to upper level is then switched to Protection path by the monitoring information of transmission；In this way
Restore network by Protection path.
By adopting the above technical scheme bring the utility model has the advantages that
(1) present invention uses Raman amplifiction technology, using multiple raman pump light sources to multiple letters of downlink in NG-PON2
Road amplifies, and increases optical power budget, makes optical signal transmission apart from farther, expansion system coverage area and user terminal access number
Mesh.
(2) in the present invention, distal end intelligent node is received using photocell pumps remaining light energy, solves smart remote section
The energy of point carrys out source problem, and is issued NG-PON2 OLT end Network Management System by that can zoom out intelligent soft exchange device
Monitoring information be modulated on pump light, intelligent soft exchange can be zoomed out using pumping optical channel and the progress of individual monitoring and controlling channels and filled
It sets and is transmitted with the information bidirectional of distal end intelligent node, realize the end NG-PON2 OLT and distant-end node is monitored and managed.
(3) the invention proposes multihop network structures, extend optical access network transmission range and user's access number.
(4) the present invention is based on the ends NG-PON2 OLT to distant-end node intelligent management, sets up trunk optical fibre protection path,
It can timely be repaired when backbone breaks down.
Detailed description of the invention
Fig. 1 is can to zoom out multi-hop optical access network schematic diagram.
Fig. 2 is can to zoom out intelligent soft exchange structure drawing of device.
Fig. 3 is one structure chart of smart remote node.
Fig. 4 is two structure chart of smart remote node.
Specific embodiment
With reference to the accompanying drawing, technical solution of the present invention is described in detail.
Fig. 1 zooms out multi-hop optical access network schematic diagram, including NG-PON2 OLT for what the present invention designed, can zoom out intelligence
Soft exchange device, working optical fibre protect optical fiber, smart remote node one, smart remote node two, branch optical fibers and all kinds of
ONU.The data-signal that NG-PON2 OLT is sent can zoom out intelligent soft exchange device, NG-PON2 OLT by optical fiber interface feeding
The control signal that middle Network Management System is sent can zoom out intelligent soft exchange device by cable feeding；Intelligent soft exchange can be zoomed out
Data-signal is controlled signal and the fusion of OTDR monitoring signals by working optical fibre and is sent into distal end intelligent node one, protection by device
Optical fiber is spare；Data-signal is carried out branch by smart remote node one, and a part is sent to by branch optical fibers is connected to the section
All kinds of ONU of point, another part are sent into smart remote node two by working optical fibre；Smart remote node two is end segment points
It is believed that number connecting all kinds of ONU by branch optical fibers.The system includes and is not limited to two smart remote nodes, permits in power budget
Perhaps in the case where, can using more smart remote nodes be connected multihop architecture.
Fig. 2 is that can zoom out intelligent soft exchange structure drawing of device, and two input terminal of WDM1 is separately connected NG-PON2 OLT light output
End and raman pump light source output terminal, the data channel (λ for inputting NG-PON2 OLTd) and raman pump light (λ1~λm)
It is combined into and is sent into WDM2 all the way；Two input terminal of WDM2 is separately connected WDM1 output end and light-receiving input terminal, is used for data channel
(λd) and monitoring and controlling channels (λp) separate, data-signal passes WDM1 back, and photoreceiver is for receiving monitoring and controlling channels (λp)；WDM3 two is defeated
Enter end and be separately connected WDM2 output end and OTDR module output end, for OTDR channel couples to be sent into optical fiber link, WDM3 is defeated
Outlet is connected to protection switching module input terminal；Protection switching module includes that two output ends are that can zoom out intelligent soft exchange device
Two output ends.Intelligence network management module passes through Network Management System in cable connection NG-PON2 OLT, Raman pump respectively
Light source, photoreceiver, OTDR and protection switching module.Intelligence network management module includes interface adaptation module, central processing unit
(CPU), drive module, network monitoring module and link protection module are pumped.Interface adaptation module is connected to CPU, and CPU connects respectively
Connect pumping drive module, network monitoring module and link protection module.Interface adaptation module be responsible for Intelligence network management module with
The data communication of NG-PON2 OLT Network Management System, pumping drive module will be for that will control modulates information to raman pump light
On source, network monitoring module is used to handle the network state information from OTDR and distal end intelligent node feedback, link protection
Module is for switching fiber protection paths.
Fig. 3 is one structure chart of smart remote node.Smart remote node one includes light energy reception and energy-storage module, low function
Control module is consumed, light opens the light 1, and light opens the light 2, WDM4, WDM5 and multiple splitters.1 input terminal of photoswitch is smart remote section
One input terminal of point, 1 output end of photoswitch connect 1 input terminal of splitter；The one of output end of splitter 1 connects photoswitch 2, light
2 output end of switch is the bypass output port of smart remote node one, and another output port of splitter 1 connects WDM4 input
End；WDM4 output end is separately connected 2 input terminal of splitter and WDM5 input terminal, and WDM4 is used for remnant Raman pump light (λ1~
λm) and data channel (λd) separate；2 splitting ratio of splitter is 90:10, and 90% light is sent into light energy reception and energy-storage module,
10% optical signal is sent into low power consumption control module, and light energy receives and energy-storage module is low power consumption control module for power supply；WDM5
Output end is separately connected 3 one output end of splitter and low power consumption control module, and WDM is used for the prison for emitting low power consumption control module
Control channel (λp) optical signal and data channel (λd) couple and return；3 splitting ratio of splitter is 90:10, and 90% light is used for back
It passes, 10% light is sent to low power consumption control module；Splitter 3 is then connected to the power splitter of 1:N, and each output end of power splitter is
The dropping output port of smart remote node one.Low power consumption control module includes photoreceiver (Rx), and optical transmitter (Tx) is adjustable
Wavelength photoreceiver (Tunable Rx) and microprocessor, and be connected with photoswitch 1,2.Rx can zoom out intelligent light for receiving
The control signal being modulated in pump light source spread out of in access device, Tx are monitoring and controlling channels (λp) light source, pass through microprocessor
Control, which sends back collected monitoring signal at smart remote node, can zoom out intelligent soft exchange device, and Tunable Rx passes through
Tuning wavelength receives the status information of a certain wavelength channel in passback data channel (λ d) respectively.
Fig. 4 is two structure chart of smart remote node.Smart remote node two is endpoint node, is eliminated as next node biography
Output port is bypassed required for defeated, other function is similar with smart remote node one.
Although embodiment described above only describes a specific embodiment of the invention example, it should be noted that of the invention
Protection scope is as defined in appended claims.Application that embodiments of the present invention are not limited thereto, and the present invention is retouched
The technology stated can also be used for other field.
Claims (6)
1. one kind can zoom out multi-hop optical access network and intelligent management system, it is characterised in that: including NG-PON2OLT, intelligence can be zoomed out
Energy soft exchange device, working optical fibre, protection optical fiber, smart remote node one, smart remote node two, branch optical fibers, and it is each
Class ONU；It includes two input terminals that intelligent soft exchange device, which can be zoomed out, passes through optical fiber and cable connection NG-PON2OLT respectively；It can
Zooming out intelligent soft exchange device includes two output ends, and two output ends pass through working optical fibre respectively and protection optical fiber is connected to intelligence
Distant-end node one；Smart remote node one is intermediate node, includes two class output ports, and one kind is dropping output port, is passed through
Branch optical fibers connect all kinds of ONU, and one kind is bypass output port, and it is remote to be connected to intelligence by working optical fibre and protection optical fiber respectively
End node two；Smart remote node two is endpoint node, only includes dropping output port, connects all kinds of ONU by branch optical fibers.
2. one kind can zoom out multi-hop optical access network and intelligent management system according to claim 1, it is characterised in that: it is described can
Zooming out intelligent soft exchange device includes multiple raman pump light sources, OTDR module, Intelligence network management module, photoreceiver, guarantor
Protect switching module and multiple wavelength division multiplexers (WDM)；The pump light source that intelligent soft exchange device utilizes multiple wavelength can be zoomed out
The NG-PON2OLT multi-wavelength downlink optical signal sent is amplified；Intelligence network management module is responsible for and NG-PON2OLT net
Network management system and smart remote node carry out information exchange, and processing is requested from NG-PON2OLT network management system monitors,
Monitoring and management information are sent to smart remote node, collect and analyzes processing from smart remote node status information, and
Network state is fed back into NG-PON2OLT Network Management System；Intelligent soft exchange device can be zoomed out using embedded OTDR module
Optical fiber link failure is detected, Intelligence network management module is according to the link state combination distant-end node of OTDR module feedback
State, by protecting switching module to repair network failure.
3. one kind can zoom out multi-hop optical access network and intelligent management system according to claim 1, it is characterised in that: the intelligence
Energy distant-end node one includes that light energy reception and energy-storage module, low power consumption control module, light open the light, splitter and wavelength-division multiplex
Device；Light energy receives and energy-storage module is for receiving raman pump light remnants optical power and being converted into electric energy as distal end intelligent node
Power supply；Low power consumption control module collects and surveys and for receiving processing from the control information that can zoom out intelligent soft exchange device
From each ONU status information, and send back and can zoom out intelligent soft exchange device, also according to the letter that can zoom out intelligent soft exchange device
Breath interaction, controls photoswitch, intelligent switching fiber protection paths.
4. one kind can zoom out multi-hop optical access network and intelligent management system according to claim 1, it is characterised in that: the intelligence
Energy distant-end node two, which eliminates, transmits required bypass output port, other function and smart remote node one for next node
It is similar.
5. it is a kind of based on the intelligent management that can zoom out multi-hop optical access network and intelligent management system described in claim 1,
It is characterized in that, comprising the following steps:
Intelligence network management module is capable of handling the monitoring information of the end NG-PON2OLT Network Management System, carries out pipe to network
Reason；Intelligence network management module can adjust pump light source power, control data-signal gain amplifier；Intelligence network management module
The link-state information that can be returned according to OTDR, judges link failure, starts link protection function；Intelligence network management module
Distal end intelligent node can be controlled using pumping optical channel and monitoring and controlling channels, distant-end node and ONU end status information be acquired, to net
Network is managed.
6. it is a kind of based on the link protection method that can zoom out multi-hop optical access network and intelligent management system described in claim 1,
It is characterized in that, comprising the following steps:
Once link failure occurs for trunk optical fiber in network, OTDR detects that failure, network monitoring module monitor failure
Occur, starts network protection function, intelligent soft exchange device can be zoomed out first and communicated with each distal end intelligent node, if nothing
Method receives the back information of a certain distal end intelligent node, then the photoswitch that the node is connected directly in network is switched to guarantor
Road maintenance diameter；At the same time, which, which can not receive, can zoom out the monitoring information that intelligent soft exchange device is sent, then
The photoswitch that the smart remote node is connected to upper level is switched to Protection path.
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