CN109640195A - A kind of emulation mode and system towards power communication Optical Transmission Network OTN large scale scene - Google Patents
A kind of emulation mode and system towards power communication Optical Transmission Network OTN large scale scene Download PDFInfo
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- CN109640195A CN109640195A CN201811368070.7A CN201811368070A CN109640195A CN 109640195 A CN109640195 A CN 109640195A CN 201811368070 A CN201811368070 A CN 201811368070A CN 109640195 A CN109640195 A CN 109640195A
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- optical transmission
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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
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/391—Modelling the propagation channel
- H04B17/3912—Simulation models, e.g. distribution of spectral power density or received signal strength indicator [RSSI] for a given geographic region
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/14—Network analysis or design
- H04L41/145—Network analysis or design involving simulating, designing, planning or modelling of a network
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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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- Computer Networks & Wireless Communication (AREA)
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Abstract
The present invention provides a kind of emulation modes and system towards power communication Optical Transmission Network OTN large scale scene, wherein emulation mode is comprising steps of A: establishing the link model with transmission property, is emulated using link model to Optical Transmission Network OTN；B: simulated failure；C: obtaining fault message, the new business forward-path after network self-healing protection is calculated according to the fault message and the forward-path information prestored, and goes out according to new business computation the new transmission property of corresponding link model；D: the link model is updated according to new transmission property.Emulation mode and system provided by the invention towards power communication Optical Transmission Network OTN large scale scene; business forward-path in power communication Optical Transmission Network OTN, which is abstracted as time delay and error code, has the link model of minor fluctuations; the self-healed protection of failure in power communication Optical Transmission Network OTN is abstracted as the switching to the link model, the emulation of large scale scene is completed in single simulation software.
Description
Technical field
The present invention relates to communication network simulation technical fields, specifically, being a kind of big towards power communication Optical Transmission Network OTN
The emulation mode and system of scale scene.
Background technique
Power telecom network is a kind of professional stronger communication network, be by power plant to electric substation and with electric power at different levels
Department's Transmission system interconnected and the exchange system or terminal device composition for being located at these departments, are the important compositions of power grid
Part.
Requirement of the power automation to power telecom network mainly includes two aspects that reliability and timeliness.
Reliability requirement refer to the important message transmitted on network will not collide due to each node is striven and transmits messages text or its
His reason and lose and message loss after can guarantee reliably to transmit by the means such as retransmitting.Timeliness requires to refer to list
The information content of network transmission will meet power communication in the time of position, the requirement communicated when especially breaking down.
Therefore, it is necessary to which the performance of communication network is studied and evaluated, suitable net is then selected according to index request
Network, Configuration network parameter select network message service type appropriate.
Network simulation is a kind of method analog network behavior using mathematical modeling and statistical analysis, to obtain specific
The technology of Network characteristic parameters.Network simulation is as a kind of new network project and design technology, in its exclusive method as net
Network planning and designing provide objective, reliable quantitative basis, shorten the network construction period, improve the science of decision in network construction
Property, reduce the investment risk of network construction.
Currently, the emulation mode of some power telecom networks has been proposed in academia, still, power telecom network is in scale
It is constantly constantly refined in extension and emulation granularity, so that the emulation of large scale scene is difficult to complete in single simulation software.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of emulation towards power communication Optical Transmission Network OTN large scale scene
The emulation of method and system, large scale scene can be completed in single simulation software.
In order to solve the above technical problems, what the present invention provides a kind of towards power communication Optical Transmission Network OTN large scale scene is imitative
True method, includes the following steps:
A: establishing the link model with transmission property, and the link model is used to simulate business forward-path in Optical Transmission Network OTN,
Optical Transmission Network OTN is emulated using the link model；
B: simulated failure；
C: fault message, the forwarding road according to each business in the fault message and the Optical Transmission Network OTN simulating scenes prestored are obtained
The new business forward-path after network self-healing protection is calculated in diameter information, and according to the new business computation
The new transmission property of corresponding link model out；
D: the link model is updated according to the new transmission property.
Further, the transmission property includes: Delay and error code information.
Further, in the step B, the method for simulated failure includes: entire node out of service, manufacture link failure
Or at least one port failure in manufacture node.
The present invention also provides a kind of analogue systems towards power communication Optical Transmission Network OTN large scale scene, comprising:
Simulation unit, for establishing the link model with transmission property, the link model is for simulating industry in Optical Transmission Network OTN
Business forward-path, emulates Optical Transmission Network OTN using the link model, and simulated failure；
Network management unit for supervising the simulation process of the simulation unit to obtain fault message, and the fault message is sent out
Out, in addition, updating the link model in the simulation unit after the new transmission property for receiving control unit sending；
Control unit, the fault message issued for receiving the network management unit, obtains the light prestored from data cell
The forward-path information of each business in transmission network simulating scenes, according to the fault message and the Optical Transmission Network OTN simulating scenes
In the forward-path information of each business the new business forward-path after network self-healing protection is calculated, and according to new industry
Business computation goes out the new transmission property of corresponding link model, and the new transmission property is issued；
Data cell, for prestoring the forward-path information of each business in the Optical Transmission Network OTN simulating scenes.
Further, the transmission property includes: Delay and error code information.
Further, in the simulation unit, the method for simulated failure includes: entire node out of service, manufacture link
At least one port failure in failure or manufacture node.
Emulation mode and system provided by the invention towards power communication Optical Transmission Network OTN large scale scene, by power communication
Business forward-path, which is abstracted as time delay and error code, in Optical Transmission Network OTN has the link model of minor fluctuations, by power communication optical transport
The self-healed protection of failure is abstracted as the switching to the link model in net, to realize that complex model abstracts, expands emulation
The scale of scene, improves the accuracy and efficiency of emulation, and the emulation of large scale scene can be completed in single simulation software.
Detailed description of the invention
Fig. 1 is the flow chart of the emulation mode of the invention towards power communication Optical Transmission Network OTN large scale scene；
Fig. 2 is the structural schematic diagram of the analogue system of the invention towards power communication Optical Transmission Network OTN large scale scene；
Fig. 3 is that network management unit and simulation unit are believed in the analogue system of the invention towards power communication Optical Transmission Network OTN large scale scene
Cease interaction schematic diagram；
Fig. 4 is data cell storing data signal in the analogue system of the invention towards power communication Optical Transmission Network OTN large scale scene
Figure.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples, so that those skilled in the art can be with
It more fully understands the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
A kind of emulation mode towards power communication Optical Transmission Network OTN large scale scene, as shown in Figure 1, including the following steps:
A: establishing the link model with transmission property, and the link model is used to simulate business forward-path in Optical Transmission Network OTN,
Optical Transmission Network OTN is emulated using the link model.
Specifically, Optical Transmission Network OTN is the transmission network for carrying energy communication service, is built by SDH, OTN technology, net
Network bandwidth high redundancy, time delay and error code are stablized, and forward-path of the every business from source to destination is static forwarding path
And there is a plurality of stand-by protection path.Link model, which refers to, sends the whole of destination from source for a certain business in Optical Transmission Network OTN
A procedural abstraction is the link model with transmission property, and stating transmission property includes: Delay and error code information, network
In business transmission process be the process transmitted on the abstracting link model.Link model is for simulating industry in Optical Transmission Network OTN
Be engaged in forward-path, based on power communication Optical Transmission Network OTN time delay, the stability of error code, and in transmission network each business exist every
From time delay will not generate fluctuation because of flow.The indexs such as time delay, the error code of the link model depend on the passed through forward-path of business
The superposition of the time delay, error code of upper generation.
The network bandwidth high redundancy of power communication Optical Transmission Network OTN, business transmission process each other be isolated by timesharing, business forwarding
Time delay, the bit error rate of process keep stablizing under network normal operation.For the global feature of forward-path, it is abstracted
There is the link model of minor fluctuations for time delay and the bit error rate, simplify simulation model to expand simulation scale, improve emulation effect
Rate.
Business forward-path generally has a plurality of forward-path for a certain business, is required to take out to every forward-path
As for corresponding link model.
Type of service include: relay protection, security and stability control, a distant place throw move back control etc. the proprietary business of systems, and
The data services such as SCADA/EMS system, measuring power angle system, electric energy metering system.
B: simulated failure.
Self-healed protection is one of Optical Transmission Network OTN protected mode, without human intervention network can in a very short period of time from
Automatically restore entrained business in failure state, the imperceptible network of user is made to have broken down.Its basic principle is exactly to make
Network has alternate routing, and establishes communication capacity again.The concept of self-healing relates only to establish communication again, but regardless of specific
The reparation and update of failure component, and the latter needs human intervention that could complete.Self-healed protection mode is towards power telecom network
Using two-fibre two-way path protection and multiplex section protection, the essence of the protected mode is that concurrently choosing is received, and is equivalent to portion for communication
Divide forward-path switching.
Failure refers to interruption of optical cables or equipment fault, can pass through the entire out of service, link failure of node and section in simulations
Some in point or multiple port failures are simulated.
C: obtaining fault message, turn according to each business in the fault message and the Optical Transmission Network OTN simulating scenes prestored
The new business forward-path after network self-healing protection is calculated in hair routing information, and according to the new business forward-path
Calculate the new transmission property of corresponding link model.
Specifically, the status attribute generated to equipment in network, port, link carries out dynamic acquisition, obtains fault message.
D: the link model is updated according to the new transmission property.
Specifically, corresponding service source section is sent by the transmission property of new link model, including time delay, error code information
Point, source node then directly transmit data to destination node according to the link model with the parameter, and the forwarding of finishing service is imitative
True process.The purpose of the path switching in simulation self-healed protection is realized by updating transmission property.
The present invention also provides a kind of analogue systems towards power communication Optical Transmission Network OTN large scale scene, as shown in Fig. 2,
It include: simulation unit, network management unit, control unit and data cell, wherein simulation unit and network management unit can be in simulation softwares
Middle foundation, such as Discrete Event Simulator, Discrete Event Simulator refer to system is changed with time be abstracted into it is a series of from
The event on time point is dissipated, by come evolution, being that a kind of event driven simulated world is seen according to event time sequence.Discrete thing
Part emulation regards the variation of system as an event, thus any variation of system all can only be by handle corresponding event come
It realizes, such as OPNET, NS-3, QualNet, OMNeT++.Simulation unit, for completing specific copying, and output property
Can index assessed, network management unit is used for and control unit and data cell carry out data interaction.
Simulation unit, for establishing the link model with transmission property, the link model is for simulating Optical Transmission Network OTN
Middle business forward-path, emulates Optical Transmission Network OTN using the link model, and simulated failure.Simulation unit is soft in emulation
It is established in part, passes through the device model to power communication optical transport network, link model, protocol model, model of place, visualization
Model etc. carries out modeling and simulation realization, can support the resource utilization to the whole network, reliability, scalability, business fortune
Row quality etc. carries out objective effective assessment；The increment planning to power communication optical transport network, business routing can be supported to adjust
Whole, maintenance solution impact analysis, adjustment of existing network parameters etc. carry out analogue simulation and provide feasibility study and Optimizing Suggestions,
To provide comprehensive data supporting to each stage work such as O&M from planning, enlarging for power communication optical transport network.
In order to realize the efficient emulation to power communication Optical Transmission Network OTN large scale scene, as shown in figure 3, can be directly by industry in simulation unit
Business data are sent to destination node, are the link model with a fixed response time, error code by intermediate relay forwarding procedural abstraction.Pipe
Unit is managed by the transmission property of link model, including time delay, error code information are sent to corresponding business source node, source node then root
Destination node, the forwarding simulation process of finishing service are directly transmitted data to according to the link model with the parameter.
For simulated failure, failure refers to interruption of optical cables or equipment fault, in simulations can by node it is entire it is out of service,
Some in link failure and node or multiple port failures are simulated.
Network management unit for supervising the simulation process of the simulation unit to obtain fault message, and the failure is believed
Breath issues, in addition, updating the link mould in the simulation unit after the new transmission property for receiving control unit sending
Type.
Specifically, network management unit completes parameters distribution, supervision in artificial network.Network management unit mainly has event
Barrier management, data interaction function, can further function such as expanding resource management, communication operational management, Topology Management, performance management
Energy.Supervision, that is, fault management and increasable extension function.Network management unit generates equipment in network, port, link
Status attribute carry out dynamic acquisition, pass through the interactive interfacing fault message with control unit if collecting fault warning.
Control unit, the fault message issued for receiving the network management unit, obtains from data cell and prestores
Optical Transmission Network OTN simulating scenes in each business forward-path information, emulated according to the fault message and the Optical Transmission Network OTN
The new business forward-path after network self-healing protection is calculated in the forward-path information of each business in scene, and according to new
Business computation go out the new transmission property of corresponding link model, and the new transmission property is issued.
Data cell, for prestoring the forward-path information of each business in the Optical Transmission Network OTN simulating scenes.
Data cell saves the abstract link model related data of Optical Transmission Network OTN.The related data saved in data cell can
Use form shown in Fig. 4.According in the business configuration file of simulation software and scene configuration file and the network planning to each item
The section that the priority in the available different paths about a certain business of a plurality of forward-path of business configuration, different paths are passed through
Point, port, link information attribute value corresponding with different paths.Priority refers in power communication Optical Transmission Network OTN as power communication industry
Business is equipped with a plurality of forward-path, and different forward-paths distinguish priority according to the performance indicators such as time delay, reliable, safety, preferentially
The high forward-path of grade selects received preferred path as receiving end, can generate path according to signal strength, signal on-off and cut
It changes, such as failure has occurred in path 1, retransmission failure, receiving end can not receive signal in path 1, then may be switched to suboptimum
Path 2.Corresponding attribute value refers to that the performance index value when forward-path to be abstracted as to link model, including time delay, time delay are trembled
Dynamic, bit error rate etc..
In the analogue system towards power communication Optical Transmission Network OTN large scale scene, the processing of whole process needs higher
Real-time, DDS Data distributing may be selected in information interactive interface, with high reliability and real-time.
In conjunction with the parallel computation advantage of Discrete Event Simulator, abstract model and peripheral control unit, one kind is constructed towards electricity
The efficient emulation platform of power communication Optical Transmission Network OTN large scale scene.The innovation of the invention consists in that proposing a kind of logical towards electric power
The high efficiency simulating method for believing Optical Transmission Network OTN large scale scene establishes a kind of towards power communication Optical Transmission Network OTN large scale scene
Efficient emulation system.The present invention completes entire power communication Optical Transmission Network OTN analogue system by establishing novel simulation frame
It builds, devises reasonable simulation model and index system, provided for power communication Optical Transmission Network OTN and support large scale scene
Efficient emulation Evaluation Platform expands the scale of simulating scenes, improves the accuracy and efficiency of emulation.
The scope of protection of the present invention is not limited to this.Those skilled in the art are made equivalent on the basis of the present invention
Substitution or transformation, it is within the scope of the present invention.Protection scope of the present invention is subject to claims.
Claims (6)
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Cited By (6)
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| CN112737832A (en) * | 2020-12-25 | 2021-04-30 | 东北电力大学 | Electric power communication hybrid simulation method for end-to-end model mapping |
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| CN113612644A (en) * | 2021-08-05 | 2021-11-05 | 烽火通信科技股份有限公司 | Dynamic simulation method and system for network elements of transmission network |
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| CN111147287A (en) * | 2019-12-10 | 2020-05-12 | 网络通信与安全紫金山实验室 | Network simulation method and system in SDN scene |
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| CN112887148B (en) * | 2021-01-29 | 2022-06-21 | 烽火通信科技股份有限公司 | Method and device for simulating and predicting network flow |
| CN113612644A (en) * | 2021-08-05 | 2021-11-05 | 烽火通信科技股份有限公司 | Dynamic simulation method and system for network elements of transmission network |
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