CN106788748A - A kind of 100G optical transfer network network-building methods based on Metropolitan Area Network (MAN) - Google Patents
A kind of 100G optical transfer network network-building methods based on Metropolitan Area Network (MAN) Download PDFInfo
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- CN106788748A CN106788748A CN201710032313.9A CN201710032313A CN106788748A CN 106788748 A CN106788748 A CN 106788748A CN 201710032313 A CN201710032313 A CN 201710032313A CN 106788748 A CN106788748 A CN 106788748A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/27—Arrangements for networking
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2507—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion
Abstract
The present invention relates to a kind of 100G optical transfer network network-building methods based on Metropolitan Area Network (MAN), core layer in Metropolitan Area Transmission Network is based on services of large granularities, high-speed transfer for being responsible for different business, convergence-level is located between core layer and Access Layer, is converged for the multiple business to Access Layer, and unification sends core layer to, wherein, the business that core layer is carried is the business of 100G/400G, and the business that convergence-level is carried is 10G/100G business, and the business that Access Layer is carried is the business such as 10G/2.5G/GE；The core layer and convergence-level use the bearer network of 100G optical transfer network systems.More number of services being born compared to conventional 10G/40G OTN, 100G OTN and a greater variety of business being provided, be especially suitable for applying in the core layer and convergence-level of large-scale Metropolitan Area Network (MAN), the present invention can lift the utilization rate of bandwidth and the flexibility of networking.
Description
Technical field
The present invention relates to the technical field of network-oriented transport layer, more particularly to a kind of 100G light based on Metropolitan Area Network (MAN) is passed
Send net network-building method.
Background technology
In traditional telecommunications network, the second generation digital transport network based on SDH/SONET, from PDH to SDH, Optical Fiber Transmission
Used as its main signal transmission means, network organization is mainly realized in electric layer, SDH technologies based on the treatment of the electric layer of business,
The cross scheduling particle based on VC4, scheduling granular size and capacity growth receive limitation, it is impossible to meet the quick of related service
Increase, and WDM technology biases toward the photosphere treatment of business, the mainly point-to-point processing mode of use lacks effective net
Network maintenance management means, due to being limited by physics and wavelength, it is difficult to be applied in network on a large scale, it is impossible to meet different manufacturers
The intercommunication of equipment；In order that the bandwidth that transmission network-adaptive magnanimity increases, is capable of the scheduling business of fast and flexible, optical transfer network
(referred to as " OTN ") combines the flexible dispatching of SDH, management and protective capability as third generation Digital Transmission network technology, and
The concepts such as mapping, multiplex/demultiplex, intersection, the embedded expense of SDH provide the day of high capacity transmission with traditional WDM is remained
Right advantage and herein technically further development.
OTN transmission nets can realize the transmission of bulky grain band width service between convergence-level and core layer router, and OTN is to speed
It is transparent, the other exchange rate of arbitrary number of level can be increased with the increase of linear velocity, the multiplexing and demultiplexing using OTN are special
Property, there is provided the business of different bit rates, the OTN optical transfer networks with metro core layer can realize 2.5G (ODU1)/10G
(ODU2) the bulky grain telecommunication services such as/40G (ODU3)/100G (ODU4)/400G are transmitted, and also can access other band width services, than
Such as GE, FE, SDH/SONET, Fiber Channel.Wherein GE/10G business interfaces have been obtained for greatly in Metropolitan Area Network (MAN) scope
The commercialization of scale, in view of the demand of each department Metropolitan Area Transmission Network present situation and growing services of large granularities, and due to 40G wavelength-divisions
System has requirement higher to the PMD coefficients of optical cable so that introduces ROADM and is restricted, and 400G net-working standardizations are not yet united
One.
With the demand that the flattening development of IP Metropolitan Area Network (MAN)s and bandwidth constantly raise speed, OTN technologies play more and more important
Effect, OTN can provide the network channel of big bandwidth, high flow capacity and broadness end to end, and the SDH/SONET before comparing is passed
Network technology is sent, OTN can be used flexibly in light, electric two-layer, with efficient administrative mechanism, with the rapid hair of transport network technology
Exhibition and gradually maturation, carry out networking and seem increasingly important using 100G OTN..
The content of the invention
The technical problems to be solved by the invention are to provide a kind of 100G optical transfer network network-building methods based on Metropolitan Area Network (MAN), can
To lift the utilization rate of bandwidth and the flexibility of networking.
The technical solution adopted for the present invention to solve the technical problems is：A kind of 100G light transmission based on Metropolitan Area Network (MAN) is provided
Net network-building method, the core layer in Metropolitan Area Transmission Network based on services of large granularities, converge by the high-speed transfer for being responsible for different business
Poly layer is located between core layer and Access Layer, is converged for the multiple business to Access Layer, and unification sends core layer to,
Wherein, the business that core layer is carried is the business of 100G/400G, and the business that convergence-level is carried is 10G/100G business, Access Layer
The business of carrying is the business such as 10G/2.5G/GE；The core layer and convergence-level use the bearer network of 100G optical transfer network systems
Network.
The 100G optical transfer networks system uses OFDM skills using the subcarrier of several 100Gbit/s PM-QPAK modulation
Art builds passage.
The subcarrier of the 100Gbit/s PM-QPAK modulation is entered using the PM-QPSK coding techniques based on relevant detection
Row modulation.
The optical transfer network system is responsible for multiplex/demultiplex host signal by built-in optical transfer network module, by prison
The alarm of defect and appearance is listened to carry out the situation that getting frame is alignd.
On the premise of the 100G optical transfer networks system is by configuring generation and termination OTU4 expenses, not changing OTU4 expenses
Carry out transparent transmission, do not check OTU4 expenses ground under the premise of carry out the Three models of transparent transmission, wherein, OTU4 is not checked finally
The pattern that transparent transmission is carried out under the premise of expense ground mainly carries out the framer of performance monitoring and FEC by mainboard to OTU4 modules
Carry out.
The 100G optical transfer networks system only need to be using grey optical module.
Beneficial effect
As a result of above-mentioned technical scheme, the present invention compared with prior art, has the following advantages that and actively imitates
Really：
The present invention, can be very well using PM-QPSK coding techniques and corresponding FEC code corrections technology based on relevant detection
Ground meets the transmission demand of high speed router, and in system group network, it need not carry out dispersion compensation, and can simplify amplify on link
The quantity of device, effectively simplifies Networking Design, and reduce networking cost.Without the dispersion change for considering that route length is caused
Change, by break-through multiple ROADM nodes so that networking is more flexibly and efficient..
The present invention is used 100G OTN to carry out networking and is directly sent out with 100G business, it is not necessary to use wave-division device,
And 10G OTN networkings are contrasted, it is necessary to use multiplexer/demultiplexer, the color glistening light of waves module of insertion 10 is needed on wave-division device, and
Equipment occupies certain locus.
The present invention creates condition without carrying out optical domain compensation to CD and PMD to introduce RODAM, significantly enhances light
The networking capability of transmission net.The normal structure of 100G OTN is identical with other transmission reticular tissues, and such equipment vendor can be using system
One volume light modulation demodulation scheme, cost has absolute advantage compared to 10G/40G.
The present invention application high-speed ADC and DSP technologies, because occurring that signal attenuation and information are passed in Chief Information Officer Distance Transmission
The physical damnification of quality is broadcast, using digital processing technology, the polarization state to information is adjusted, to a certain extent, can be with
Realize the lifting of system dispersion tolerance limit and PMD tolerance limits.
Present invention introduces ROADM and Based Intelligent Control plane WASON, the intelligent characteristic of OTN is greatly enhanced, realized
The network information safeguards and updates that while the reduction of O＆M difficulty, cost is also reduced, and more efficiently realizes that business is end-to-end automatically
Configuration and intelligent scheduling.When with MESH topologys, many grade services are may also provide, repeatedly disconnected fibre can be protected, significantly
The security that improve network of degree.
Brief description of the drawings
Fig. 1 is networking schematic diagram of the invention；
Fig. 2 is 100G-10G two benches multiplexing schematic diagram；
Fig. 3 is networking mode schematic diagram of the 100G business on 10G OTN；
Fig. 4 is networking mode schematic diagram of the 100G business on 100G OTN.
Specific embodiment
With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate the present invention
Rather than limitation the scope of the present invention.In addition, it is to be understood that after the content for having read instruction of the present invention, people in the art
Member can make various changes or modifications to the present invention, and these equivalent form of values equally fall within the application appended claims and limited
Scope.
Embodiments of the present invention are related to a kind of 100G optical transfer network network-building methods based on Metropolitan Area Network (MAN), as shown in figure 1, city
Based on services of large granularities, the high-speed transfer for being responsible for different business, convergence-level is located at core to core layer in the transmission net of domain
Between layer and Access Layer, converged for the multiple business to Access Layer, and unification sends core layer to, wherein, core layer
The business of carrying is the business of 100G/400G, and the business that convergence-level is carried is 10G/100G business, and the business that Access Layer is carried is
10G/2.5G/GE business；The core layer and convergence-level use the bearer network of 100G optical transfer network systems.It is seen that, phase
Larger particle repeat in work can be set up than conventional 10G/40G OTN, 100G OTN, IP operation access capability strengthens, very
It is suitably applied in the core layer of large-scale Metropolitan Area Network (MAN) and convergence-level.
The OSNR tolerance limits of 100G wavelength-divisions can reach the level of 10G, that is, 100G can be reached and 10G systems when carrying out networking
The same transmission range, and all of type of service is not influenceed, 100G OTN (M1H10) system holding as more than 10G circuits
Below the 10G business such as contained network network, 2.5G, GE, FE continues with existing 10G OTN systems and carries, as shown in Figure 2.Shown in Fig. 2
For 100G OTN (M1H10) support miscellaneous service, except OC192/STM 64,10G LAN, FC 8G/FC10G, OTU2/
OTU2e, Och etc., also including all business supported in 10G OTN (M2X16), such as GbE, OC3/STM 1, OC12/STM
4th, OC48/STM 16, OTU1, AnyRate etc..
Wavelength of the 100G OTN under the premise of the big business of identical than 10G OTN takes number and reduces 10 times.Such as build
The passage of 400G, only need to use OFDM technology to the subcarrier of 4 100Gbit/s PM-QPAK modulation, and 10Gbit/s needs
40.
100G systems have spectrum efficiency higher, energy using the PM-QPSK coding techniques based on relevant detection, this technology
OSNR is set greatly to improve.High performance signal demodulation is realized, compared with other demodulation modes, it is local that relevant detection is used
Laser power will be far longer than the luminous power of input optical signal, so OSNR is also greatly improved.
What the 100G in 100G OTN was represented is 100G ports, and the T20X shown in Fig. 3 is 10G OTN, shown in Fig. 4
M1H10 is 100G OTN.Contrasted by Fig. 3 and Fig. 4, two equipment transmit 100G business, are by 10 using 10G OTN networkings
10G service convergences are sent to core layer, it is necessary to use multiplexer/demultiplexer into 100G business, and wave-division device needs to occupy certain
Locus simultaneously, also needs the color glistening light of waves module of insertion 10 on wave-division device.And networking is carried out with 100G OTN, avoid the need for
Wave-division device is used, optical module also only needs ashen light CFP modules.Business within 100G need not all use wave-division device, and ripple
Subset is required for glory module, so 100G OTN only need to simplify networking model using grey optical module, reduces input cost
Built-in OTN modules are responsible for multiplex/demultiplex host signal, by monitoring the alarm of defect and appearance come getting frame
The situation of alignment.100G OTN by configuring generation and termination OTU4 expenses, not changing OTU4 expenses on the premise of carry out it is transparent
Transmit, do not check transparent transmission Three models under the premise of OTU4 expenses ground, a kind of last pattern is mainly to OTU4 module progressive
Can monitor and FEC is carried out by the framer of mainboard.
The dispersion tolerance of the intrinsic 800ps of 10G optical modules, circuit need to could meet by residual dispersion control within this range
50ms protection criterias, need every 40km in actual networking plus a DCM dispersion compensation module solve light in transmitting procedure
Chromatic dispersion problem.Using electrical domain DSP treatment, 100G system dispersion tolerance limits are up to 40000ps, and easily meet 50ms switches bar
Part.In equipment in the system group network within 2000km, 100G OTN need not carry out dispersion compensation, can simplify on link and put
The quantity of big device, effectively simplifies Networking Design, and reduce networking cost.As can be seen here, the 100G OTN that the present invention is used
Delivery platform is best selection, and the intersecting grain of two-forty has crossing efficiency higher, and equipment can be made to be easier to realize greatly
Interconnection ability on the premise of, remain to that equipment cost greatly reduces.
Claims (6)
1. a kind of 100G optical transfer network network-building methods based on Metropolitan Area Network (MAN), it is characterised in that core layer in Metropolitan Area Transmission Network with
Based on services of large granularities, the high-speed transfer for being responsible for different business, convergence-level is located between core layer and Access Layer, for right
The multiple business of Access Layer is converged, and unification sends core layer to, wherein, the business that core layer is carried is 100G/400G
Business, convergence-level carry business be 10G/100G business, Access Layer carry business for 10G/2.5G/GE business；Institute
State the bearer network of core layer and convergence-level using 100G optical transfer network systems.
2. 100G optical transfer network network-building methods based on Metropolitan Area Network (MAN) according to claim 1, it is characterised in that the 100G
Optical transfer network system builds passage using the subcarrier of several 100Gbit/s PM-QPAK modulation using OFDM technology.
3. 100G optical transfer network network-building methods based on Metropolitan Area Network (MAN) according to claim 2, it is characterised in that described
The subcarrier of 100Gbit/s PM-QPAK modulation is modulated using the PM-QPSK coding techniques based on relevant detection.
4. 100G optical transfer network network-building methods based on Metropolitan Area Network (MAN) according to claim 1, it is characterised in that the light is passed
Net system is sent to be responsible for multiplex/demultiplex host signal by built-in optical transfer network module, by monitoring defect and the announcement for occurring
Police carrys out the situation of getting frame alignment.
5. 100G optical transfer network network-building methods based on Metropolitan Area Network (MAN) according to claim 4, it is characterised in that the 100G
Optical transfer network system by configuring generation and termination OTU4 expenses, not changing OTU4 expenses on the premise of carry out transparent transmission, no
Checking under the premise of OTU4 expenses ground carries out the Three models of transparent transmission, wherein, do not check finally under the premise of OTU4 expenses ground
The pattern of row transparent transmission mainly carries out performance monitoring and FEC to OTU4 modules to be carried out by the framer of mainboard.
6. 100G optical transfer network network-building methods based on Metropolitan Area Network (MAN) according to claim 1, it is characterised in that the 100G
Optical transfer network system only need to be using grey optical module.
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| CN109743112A (en) * | 2018-12-27 | 2019-05-10 | 深圳前海微众银行股份有限公司 | OTN network-building method, device, equipment and computer readable storage medium |
| WO2022001714A1 (en) * | 2020-06-28 | 2022-01-06 | 华为技术有限公司 | Networking system and related data transmission method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108093413A (en) * | 2017-11-28 | 2018-05-29 | 江苏省邮电规划设计院有限责任公司 | A kind of 4G metropolitan area network planing methods based on big data analysis |
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| CN109743112A (en) * | 2018-12-27 | 2019-05-10 | 深圳前海微众银行股份有限公司 | OTN network-building method, device, equipment and computer readable storage medium |
| WO2022001714A1 (en) * | 2020-06-28 | 2022-01-06 | 华为技术有限公司 | Networking system and related data transmission method |
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Application publication date: 20170531 |