CN112492414B - Method for realizing optical signal fault simulation of optical transport network - Google Patents
Method for realizing optical signal fault simulation of optical transport network Download PDFInfo
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- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
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- H04L41/06—Management of faults, events, alarms or notifications
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- 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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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
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Abstract
The invention relates to a method for realizing optical signal fault simulation of an optical transport network, which comprises the following steps: firstly, designing a simulation OCH frame structure and a simulation OMS frame structure which can simultaneously describe optical layer attributes and electrical layer attributes, then developing the processing function of a circuit board, a wave combining plate, a wave splitting plate and an optical amplifier plate on the simulation OCH/OMS frame, further creating an OTN simulation board card and a simulation optical fiber, setting fault parameters at specified fault points to trigger faults, and realizing optical signal abnormity detection, alarm signal reporting, optical layer physical attribute change and abnormal parameter transmission by sending, receiving and processing the simulation OCH frame and the simulation OMS frame between the simulation board card and the simulation optical fiber. The invention can conveniently and quickly trigger the fault of the multi-type OTN optical signal, accurately reproduce the fault phenomenon, and effectively support the fault analysis and processing capability improvement of communication technicians after application.
Description
Technical Field
The invention relates to a method for realizing optical layer signal fault simulation in an Optical Transport Network (OTN), in particular to an OTN optical signal fault simulation method which sets board card, port and optical fiber problems to cause various types of optical signal faults and automatically generates alarm and abnormal signal parameters on the basis of simulating an OCH/OMS frame structure and simulating the frame processing function of a board card/optical fiber. Belongs to the field of communication simulation. The method is mainly applied to flexibly simulating optical layer communication faults of various Optical Transport Networks (OTN) in the industries of electric power, radio, television and telecommunication.
Background
With the rapid development of mobile internet, internet of things and energy internet, the role of the transmission network as an information transmission high-speed channel is more and more important, the quantity of the carried information is continuously increased, and the transmission quality and the safety requirement are continuously improved. The Optical Transport Network (OTN) technology, which is the most important transmission technology at present, flexibly provides a plurality of high-rate interfaces, supports transparent transmission of various service data, has strong network management capability and network protection capability, and can provide reliable transmission for large-granule services between sites. Compared with the traditional SDH technology, the OTN technology principle is more complex, the networking mode is flexible and changeable, and the fault analysis processing difficulty is further improved, so that great challenges are brought to the knowledge skills of communication professional technicians, and especially higher requirements are brought to the rapid detection and correct processing capability of optical signal faults under various complex network scenes. At present, OTN network fault related training and drilling are mainly carried out by a training network formed by a small number of real OTN devices, so that the equipment purchasing and daily maintenance cost is high, the problems of high difficulty in fault setting technology, high reproduction cost and the like exist, and certain personal safety and equipment damage risks exist. At present, OTN fault simulation systems are few, information such as optical power, wavelength and the like cannot be transmitted between each OTN device and the inside of the device due to the fact that the transmission and detection capability of optical signal physical attributes in actual devices is lacked, relevant alarms cannot be detected and triggered, and panoramic simulation of multiple types of faults is difficult to achieve.
Disclosure of Invention
Aiming at the problems, the invention provides a method for flexibly and quickly simulating the faults of various OTN optical signals. The method creates simulation board cards and simulation optical fibers related to OTN optical signal processing, provides a method for setting abnormal optical signal parameters in a multi-type fault scene, and flexibly triggers the faults of the various types of optical signals related to the board cards, ports and the optical fibers and generates alarm signals in any equipment number, board card number and optical fiber connection mode by sending, receiving and processing simulation OCH frame signals and simulation OMS frame signals between the simulation board cards and the simulation optical fibers. The technical scheme of the invention is as follows:
a method for realizing optical signal fault simulation of an optical transport network comprises the following steps: firstly, designing a simulation OCH frame structure and a simulation OMS frame structure which can simultaneously describe optical layer attributes and electrical layer attributes, then developing the processing function of a circuit board, a wave combining plate, a wave splitting plate and an optical amplifier plate on the simulation OCH/OMS frame, further creating an OTN simulation board card and a simulation optical fiber, setting fault parameters at specified fault points to trigger faults, and realizing optical signal abnormity detection, alarm signal reporting, optical layer physical attribute change and abnormal parameter transmission by sending, receiving and processing the simulation OCH frame and the simulation OMS frame between the simulation board card and the simulation optical fiber.
Preferably, defining a simulated OCH frame structure and a simulated OMS frame structure:
the OTN network consists of an electric transmission layer and an optical transmission layer; the electric transmission layer is positioned on the optical transmission layer, a digital signal generated by the electric transmission layer is an OTN frame, and a simulated OCH frame structure is designed based on a standard OTN frame structure and by adding definition of an optical power and wavelength optical channel overhead field, and is used for describing physical properties of an optical signal transmitted between a circuit board and a wavelength division/combination wave plate in the OTN equipment and content of the optical signal containing an electric layer signal.
Preferably, the simulation OMS/OCH frame processing function of the OTN simulation board is developed:
the OTN equipment model is formed by creating simulation board cards such as a circuit board, a wave splitting board, a wave combining board and an optical playing board, the simulation board cards are communicated through simulation optical fibers, and simulation OCH frames or simulation OMS frames are transmitted.
Preferably, creating an OTN simulation board and a simulation fiber and adding a simulation port:
automatically generating simulation optical fibers of all OTN simulation board cards and connecting board cards by scanning a network configuration file; the network configuration file is divided into two parts corresponding to the network topology to be simulated, and the two parts are respectively used for creating a simulation board card and a simulation optical fiber.
Preferably, the fault setting is performed:
the method comprises the steps that a fault setting message is sent to a specific fault point object to achieve flexible setting of abnormal parameters in a multi-type optical signal fault scene;
the specific fault point object comprises a simulation board card and a simulation optical fiber.
Preferably, the simulation board card and the optical fiber process the simulation optical signal and generate an alarm:
the simulation circuit board, the wave combination board, the optical amplifier board and the wave division board generate a simulation OCH/OMS frame and send the frame to the simulation optical fiber according to the parameters set when the board card and the port are created and the new parameters formed after the fault setting, the simulation optical fiber updates the optical power information in the simulation OCH/OMS frame and sends the information to the other simulation board card connected with the simulation optical fiber, and the board card analyzes the received simulation OCH/OMS frame, generates a corresponding alarm signal, analyzes the field in the simulation OCH/OMS frame, and performs corresponding processing and updating.
Preferably, in the simulated OCH frame processing function of the circuit board, the circuit board receives and processes the simulated OCH frame signal from the simulated optical fiber, and the specific processing process includes: the circuit board receives and processes the simulated OCH frame signals from the simulation optical fiber and sends the simulated OCH frame signals to the simulation optical fiber at regular time;
the wave combination plate has a simulation OCH/OMS frame processing function: the wave combining plate receives the simulated OCH frame signals of the multiple optical input ports, generates a new simulated OMS signal after processing, and sends the new simulated OMS signal to the simulated optical fiber;
the optical amplifier board has the following functions of processing simulation OMS frames: the optical amplifier board receives the simulated OMS frame signal from the simulated optical fiber, generates a new simulated OMS signal after processing, and sends the new simulated OMS signal to the simulated optical fiber from the optical output port;
the wave division plate has the following functions of simulating OCH/OMS frame processing: the wave-splitting plate receives the simulated OMS frame signals from the simulated optical fibers, generates a plurality of new simulated OCH frame signals after processing, and sends the signals to the simulated optical fibers from the corresponding optical output ports; the simulation optical fiber has the following functions of processing simulation OCH frames/OMS frames: and after receiving the simulated OCH frame signals or the simulated OMS frame signals, the simulated optical fibers generate new simulated OCH frame signals or simulated OMS frame signals after processing, and send the new simulated OCH frame signals or the simulated OMS frame signals to the related board cards through the optical fiber output ports.
Preferably, a simulation board card is created: scanning a Board creating part in the network configuration file, adding a simulation Board to the simulation equipment for each scanned Create-Board line, and storing relevant parameters in the scanned configuration file into the relevant parameters of the simulation Board.
Preferably, adding an emulation port: after each simulation board card is created, an adding Port part in a network configuration file is scanned, a simulation Port is added in each scanned Add _ Port row, relevant parameters in the scanned configuration file are stored in the relevant parameters of the simulation Port, and then the simulation OCH/OMS frame processing function of the simulation board block is started.
Preferably, a simulated fiber is created: and scanning a Fiber creating part in the configuration file of the simulation optical transmission network, and creating a simulation Fiber object for each scanned Create _ Fiber row. Saving relevant parameters in the scanned script file into the attributes of the simulation optical fiber object, and setting Status parameters of each simulation optical fiber as normal; and then starting the simulated OCH/OMS frame processing function of the simulated optical fiber.
Compared with the prior art, the invention has the following advantages:
the simulation OCH frame and simulation OMS frame structures designed by the invention creatively realize the panoramic description of optical layer attributes and electrical layer attributes of OTN network signals, and solve the problem that the existing full-digital OTN simulation system can not transmit the physical attributes of optical signals. The invention provides a multi-type optical signal processing board card and a method for processing simulated OCH (OCH) frame signals and simulated OMS (optical fiber) frame signals by optical fibers, which realize the analysis processing of optical layer attributes of OTN (optical transport network) signals and the generation of alarm signals and solve the problems that various faults are difficult to automatically detect and automatically generate alarms. The simulation board card, the simulation optical fiber creating method and the fault setting method provided by the invention solve the problems that an OTN (optical transport network) network and equipment are difficult to flexibly construct and optical signal faults are difficult to flexibly trigger.
By comprehensively applying the method, various OTN optical signal faults can be conveniently and quickly triggered, the fault phenomenon can be accurately reproduced, the panoramic simulation of the main optical signal faults in the OTN network is realized by a simple and effective mode, the fault analysis and processing capability of communication technicians can be effectively supported after the panoramic simulation method is applied, and the method has great social benefit and economic benefit.
Drawings
FIG. 1 is a flow chart of the operation of the present invention;
FIG. 2 is a diagram of the OTN frame structure of the present invention;
FIG. 3 is a diagram of a simulated OCH frame structure in accordance with the present invention;
FIG. 4 is a diagram of a simulated OMS frame structure of the present invention;
fig. 5 is a diagram of a simulation board card and a simulation optical fiber according to the present invention.
Detailed Description
The invention firstly designs a simulation OCH frame structure and a simulation OMS frame structure which can simultaneously describe optical layer attributes and electrical layer attributes, then develops the processing functions of a circuit board, a wave combining plate, a wave dividing plate and an optical amplifier plate on the simulation OCH/OMS frame, further creates an OTN simulation board and a simulation optical fiber, sets fault parameters at specified fault points so as to trigger faults, and realizes optical signal abnormity detection, alarm signal reporting, optical layer physical attribute change and abnormal parameter transmission by sending, receiving and processing the simulation OCH frame and the simulation OMS frame between the simulation board and the simulation optical fiber. The workflow is shown in fig. 1.
The specific implementation method is as follows:
1. defining a simulated OCH frame Structure and a simulated OMS frame Structure
An OTN network consists of an electrical transport layer (referred to simply as an "electrical layer") and an optical transport layer (referred to simply as an "optical layer"). The electrical layer is located on the optical layer, and the generated digital signal is the OTN frame, as shown in fig. 2.
The OTN frame structure does not contain optical signal physical attributes such as optical power, wavelength, and the like, and the physical attributes cannot be transmitted between different boards or nodes through the OTN frame, so that an optical layer fault cannot be discovered by detecting information in the received OTN frame. The method is based on a standard OTN frame structure, adds definitions of OCH (optical channel) overhead fields such as optical Power (Power) and Wavelength (wavelet), and designs a simulation OCH frame structure, as shown in FIG. 3, for describing physical properties of optical signals transmitted between a circuit board and a Wavelength division/combination board in the OTN device and contents of electrical layer signals contained in the optical signals.
Based on the simulated OCH frame structure, the method designs a simulated OMS frame structure by adding definitions of OMS (optical multiplexing section) overhead fields such as Total optical Power (Total _ Power) and the like after multiplexing N simulated OCH frames, as shown in fig. 4, for describing physical attributes of multiplexed optical signals transmitted between a splitting/multiplexing board and an optical playback board in OTN equipment and between optical playback boards of different OTN equipment and contents of electrical layer signals contained in the multiplexed optical signals.
The data types and definitions of the newly added fields in the simulated OCH frame and the simulated OMS frame are shown in the following table:
| field(s) | Data type | Definition and action |
| Power | int | Optical power in dBm |
| Wavelength | float | Wavelength in nm |
| Total_Power | int | Total optical power after combination in dBm |
| Total_Wave | int | Total number of wave-combined channels |
2. Simulation OMS/OCH frame processing function for developing OTN simulation board
The method forms an OTN equipment model by creating simulation board cards such as a circuit board, a wave splitting board, a wave combining board, an optical playing board and the like, the simulation board cards communicate with each other through simulation optical fibers, and a simulation OCH frame or a simulation OMS frame is transmitted, as shown in FIG. 5.
2.1 simulated OCH frame processing function of Circuit Board
The circuit board receives and processes the simulation OCH frame signal from the simulation optical fiber, and the specific processing process is as follows:
1) Starting a timer T1 when a circuit board is initialized;
2) When the timer T1 is overtime, scanning messages from the simulated optical fiber received by the circuit board (each message includes a receiving port number port1 and a received simulated OCH frame object OCH 11), and sequentially processing each message as follows 3) and 4):
3) Reading the value of the Power field in och11, comparing the value with a receiving optical Power threshold value (including a lightless threshold value _ no _ Power, an early warning low threshold value _ Power _ low, and an early warning high threshold value _ Power _ high) preset by a receiving port (optical port) of port1 of a circuit board, and generating a 'lightless input' alarm if och11.Power is less than or equal to threshold _ no _ Power; if threshold _ no _ power is less than och11, power is less than or equal to threshold _ power _ low, then generating 'input dim light' alarm; if och11.Power is larger than or equal to threshold _ power _ high, then generating "input strong light" alarm;
4) If the optical power is normal, further analyzing the electrical layer signal overhead (including OTUk OH, ODUk OH, OPUk OH, etc.) in the OTN frame in och11.
The circuit board sends simulation OCH frame signal to the simulation optical fiber at regular time, and the specific processing process is as follows:
1) when a timer T1 is overtime, scanning all OTN frames to be sent of sending ports of a circuit board, and executing 2) and 3) on each OTN frame to be sent;
2) And creating a simulated OCH Frame object OCH12, and setting OCH12.OTN _ Frame as an OTN Frame to be sent. Reading parameter values preset by a sending port of a circuit board, wherein the parameter values comprise luminous power p12 and wavelength w12, and storing the parameter values to och12.Power and och12. Wavelet;
3) And searching the optical fiber connection table, finding the simulated optical fiber object corresponding to the sending port, and sending the och12 to the simulated optical fiber object.
2.2 combining wave plate to simulate OCH/OMS frame processing function
The wave combining plate receives the simulated OCH frame signals of the multiple optical input ports, generates a new simulated OMS signal after processing, and sends the new simulated OMS signal to the simulated optical fiber, and the specific processing process is as follows:
1) Starting a timer T2 when the wave combining plate is initialized, and clearing the counter N2 to generate a new simulation OMS frame object OMS2;
2) When the timer T2 is overtime, scanning the received messages from the simulation optical fiber (each message comprises a port number port2 and a simulation OCH frame object OCH 2), sequentially processing each message according to the following steps of 3-5), and turning to 6) to continue executing after all messages are processed;
3) If the wavelength parameters of och2. Wavelet and the input port with port number of port2 of the wave-combining board are not consistent, skipping 4) and 5);
4) Adding 1 to a counter N2;
5) Storing OCH2 into a simulated OCH Frame field with a subscript of N2 in oms2, namely, oms2.OCH _ Frame [ N2] = OCH2;
6) Set oms2.Total _ Wave as N2;
7) Reading the preset insertion loss il2 of the wave combining plate, setting single-Channel Power Channel _ Power = oms2.Och _ Frame [ N1] (assuming that the powers of the channels are consistent), and calculating the total optical Power after wave combining according to the following method: total _ Power = Channel _ Power-10lg (N2) -il2, save to oms2.
8) And searching the optical fiber connection table, finding the simulation optical fiber object corresponding to the output port of the wave combining plate, and sending oms2 to the simulation optical fiber object.
2.3 optical amplifier board pair simulation OMS frame processing function
The optical amplifier board receives the simulated OMS frame signal from the simulated optical fiber, generates a new simulated OMS signal after processing, and sends the new simulated OMS signal to the simulated optical fiber from the optical output port, and the specific processing process is as follows:
1) When the optical playing board receives a message from the simulation optical fiber (the message contains a simulation OMS frame object OMS 3), reading a preset gain g3 of the optical playing board, and calculating and updating the total optical power in OMS3 according to the following method: oms3.Total _ Power = oms3.Total _ Power + g3.
2) And searching the optical fiber connection table, finding the simulation optical fiber object corresponding to the output port of the optical amplifier board, and sending oms3 to the simulation optical fiber object.
2.4 function of processing simulated OCH/OMS frame by wave-dividing plate
The wave-splitting plate receives the simulated OMS frame signals from the simulated optical fiber, generates a plurality of new simulated OCH frame signals after processing, and sends the signals to the simulated optical fiber from the corresponding optical output ports, and the specific processing process is as follows:
1) And the message (containing the simulation OMS frame object OMS 4) from the simulation optical fiber received by the Wave division board stores the value of Total _ Wave in OMS4 to N4.
2) Reading the preset insertion loss il4 of the wave division plate, and calculating the single-wave optical power after wave division according to the following method: channel _ Power = oms4.Total _ Power-10lg (N4) -il4.
3) Sequentially generating N4 simulated OCH frame objects, wherein the ith (i is more than or equal to 1 and less than or equal to N4) simulated OCH frame object OCH [ i ] has the following values: och [ i ]. Power = Channel _ Power; och [ i ]. Wavelet [ i ] = oms4.Och _ Frame [ i ]. Wavelet; och [ i ]. OTN _ Frame = oms4.Och _ Frame [ i ]. OTN _ Frame.
4) For each och [ i ], searching all output ports of the wave-splitting plate, finding the output port with the Wavelength attribute consistent with och [ i ]. Wavelet, searching the optical fiber connection table, finding the simulation optical fiber object corresponding to the output port, and sending och [ i ] to the simulation optical fiber object.
2.5 simulation fiber to simulation OCH frame/OMS frame processing function
After receiving the simulated OCH frame signal or the simulated OMS frame signal, the simulated optical fiber generates a new simulated OCH frame signal after processing, and sends the new simulated OCH frame signal to a related board card through an optical fiber output port, and the specific processing process is as follows:
1) When the simulation fiber receives the message from the circuit board/wave combination board/optical playing board/wave division board (the message contains the simulation OCH frame object OCH5 or the simulation OMS frame object OMS 5),
2) The status parameter (status) of the artificial fiber is read, and if the status is "down", the optical power in och5 or oms5 is updated as follows: och5.Power = -60 (no light value), oms5.Total _ Power = -60 (no light value); otherwise, reading the preset power loss5 of the simulation optical fiber, and calculating and updating the optical power in och5 or oms5 according to the following method: och5.Power = och5.Power-loss5, oms5.Total _ Power = oms5.Total _ Power-loss5.
3) And searching the optical fiber connection table, finding a board card object (wave combining board/optical amplifier board/wave splitting board/circuit board) corresponding to the simulation optical fiber and receiving the optical signal, and sending och5 or oms5 to the board card object.
3. Creating OTN simulation board card and simulation optical fiber
The method automatically generates the simulation optical fibers of all the OTN simulation board cards and the connecting board cards by scanning the network configuration file.
The network configuration file corresponds to a network topology to be simulated and is divided into two parts which are respectively used for creating a simulation board card and a simulation optical fiber. The format is as follows:
3.1 creating simulation Board
Scanning a 'Create Board' part in the network configuration file, adding a simulation Board to the simulation equipment for each scanned 'Create _ Board' row, and storing relevant parameters in the scanned configuration file into the relevant parameters of the simulation Board.
The parameters of the simulation board card are shown in the following table:
in the network configuration file, the format of the Create _ Board line is: create _ Board =, { node _ id =, board _ id =, board _ type =, total _ port =, il =, gain = }, where the il and gain fields determine whether it is present or not according to the Board type.
For example: create _ Board = "node1" Board _ id = "0-2-3-LDB2", board _ type = "xlb", total _ port =2} a Board will be added in node1, its parameters are set to Board _ id = "0-2-3-LDB2", board _ type = "xlb", total _ port =2.
3.2 adding simulation ports
After each simulation board card is created, scanning an adding Port part in a network configuration file, adding a simulation Port (simulation optical Port) in each scanned Add _ Port row, storing relevant parameters in the scanned configuration file into the relevant parameters of the simulation Port, and then starting a simulation OCH/OMS frame processing function of the simulation board block.
The parameters of the emulated port are shown in the following table:
in the network configuration file, the format of the Add _ Port row is: add _ Port =, { Port _ no = power =, wavelet =, threshold _ no _ power =, threshold _ power _ low, threshold _ power _ high = }.
For example: <xnotran> Add _ Port: { port _ no =1,power = -6,wavelength=1500.60624,threshold_no_power = -18,threshold_power_low = -15,threshold_power_high=0}, , port _ no =1,power = -6,wavelength=1500.60624,threshold_no_power = -18, threshold _ power _ low = -15,threshold_power_high=0. </xnotran>
3.3 creating an emulated fiber
And scanning a Fiber creating part in the configuration file of the simulation optical transmission network, and creating a simulation Fiber object for each scanned Create-Fiber row. And saving the relevant parameters in the scanned script file into the attributes of the simulation optical fiber object, and setting the Status parameter of each simulation optical fiber to be normal. And then starting the simulated OCH/OMS frame processing function of the simulated optical fiber.
The parameters of the simulated fiber are shown in the following table:
in the network configuration file, the format of the Create _ Fiber line is: create _ Fiber =, { Fiber _ id =, src _ node =, src _ board =, src _ port =, dest _ node =, dest _ board =, dest _ port =, loss = }.
For example: create _ Fiber = "node1-node2", src _ node = "node1", src _ board = "0-1-6-EONA", src _ port =1, dest _node = "node2", dest _ board = "0-2-2-EONA", dest _ port =1, loss = "5 } an emulated Fiber connecting an emulated light cast panel in node1 and an emulated light cast panel in node2 will be created and the parameters of this emulated Fiber will be set to fixture =" node1_ node2", src _ node =" node1", src _ board" 0-1-6-EONA ", sr _ port = node1, dest _ node =" 2", dest _ node ="0-2-2 ", and loss _ node =" 5, loss _ node = "1, loss _ port =" node1, dest _ = node = "node1 =" node 2-2 ", and loss _ 2-2-2, loss _ node =5.
4. Performing fault setting
The method realizes the flexible setting of abnormal parameters in the multi-type optical signal fault scene by sending fault setting information to specific fault point objects (including simulation board cards and simulation optical fibers). The fault setting message format is: the type: position: power: wavelength', wherein the values of various attributes are shown in the following table:
when the simulation board card receives the fault setting message, reading values of fields in the message, and performing the following processing:
1) If type =1, status = "down", then the luminous power (power) of all ports of the emulation board is set as a null value (-60).
2) If type =1, status = "fault", the insertion loss (il) value of the emulation board (wave division board, wave combination board) is set to il + fault _ power, or the gain (gain) value of the emulation board (light emitting board) is set to gain + fault _ power.
3) If type =2,status = "down", the luminous power (power) of the corresponding port in the emulation board is set to be the null value (-60).
4) If the type =2 and the status = "fault", the light emitting power (power) of the corresponding port in the emulation board card is set as power + fault _ power, and the wavelength (wavelength) of the port is set as fault _ wavelength.
5) If type =3 and status = "fault", the corresponding port in the emulation board will set the wavelength (wavelength) of the port to fault _ wavelength.
6) If type =4, status = "down", the state of the artificial fiber (status) is set to "down" ("off").
4) If type =4, status = "fault", the power loss (loss) of the artificial fiber is set to (loss + fault _ power).
5. The simulation board card and the optical fiber process the simulation optical signal and generate the alarm
The simulation circuit board, the wave combination board, the optical amplifier board and the wave division board generate a simulation OCH/OMS frame and send the frame to the simulation optical fiber according to the parameters set when the board card and the port are created and the new parameters formed after the fault setting, the simulation optical fiber updates the optical power information in the simulation OCH/OMS frame and sends the information to the other simulation board card connected with the simulation optical fiber, and the board card analyzes the received simulation OCH/OMS frame, generates a corresponding alarm signal, analyzes the field in the simulation OCH/OMS frame, and performs corresponding processing and updating.
The invention has the following innovation points: the method comprises the steps of simulating OCH frames and OMS frame structures, processing the simulated OCH/OMS frames by various types of OTN simulation board cards and simulation optical fibers, generating related alarms, triggering faults such as optical fiber interruption, optical power abnormity, wavelength abnormity and the like in an OTN network and simulating fault phenomena.
Claims (10)
1. A method for realizing optical signal fault simulation of an optical transport network is characterized by comprising the following steps: firstly, designing a simulated OCH frame structure and a simulated OMS frame structure which simultaneously describe optical layer attributes and electrical layer attributes, then developing the processing functions of a circuit board, a wave combination plate, a wave division plate and an optical amplifier plate on a simulated OCH/OMS frame, further creating an OTN simulated board and a simulated optical fiber, setting fault parameters at a specified fault point so as to trigger a fault, and realizing optical signal abnormity detection, alarm signal reporting, optical layer physical attribute change and abnormal parameter transmission by sending, receiving and processing the simulated OCH frame and the simulated OMS frame between the simulated board and the simulated optical fiber.
2. The method of claim 1, wherein the simulated OCH frame structure and the simulated OMS frame structure are defined as follows:
the OTN network consists of an electric transmission layer and an optical transmission layer; the electric transmission layer is positioned on the optical transmission layer, a digital signal generated by the electric transmission layer is an OTN frame, and a simulated OCH frame structure is designed based on a standard OTN frame structure and by adding definition of an optical power and wavelength optical channel overhead field, and is used for describing physical properties of an optical signal transmitted between a circuit board and a wavelength division/combination wave plate in the OTN equipment and content of the optical signal containing an electric layer signal.
3. The method for realizing optical signal fault simulation of an optical transport network according to claim 1, wherein a simulation OMS/OCH frame processing function of an OTN simulation board card is developed:
the OTN equipment model is formed by creating a circuit board, a wave splitting board, a wave combining board and an optical amplifier board simulation board card, the simulation board cards are communicated through simulation optical fibers, and simulation OCH frames or simulation OMS frames are transmitted.
4. The method according to claim 1, wherein the creating of the OTN emulation board and the emulation fiber and the adding of the emulation port are performed by:
automatically generating simulation optical fibers of all OTN simulation board cards and connecting board cards by scanning a network configuration file; the network configuration file is divided into two parts corresponding to the network topology to be simulated, and the two parts are respectively used for creating a simulation board card and a simulation optical fiber.
5. The method according to claim 1, wherein the fault setting is performed by:
the method comprises the steps that a fault setting message is sent to a specific fault point object to achieve flexible setting of abnormal parameters in a multi-type optical signal fault scene;
the specific fault point object comprises a simulation board card and a simulation optical fiber.
6. The method according to claim 1, wherein the emulation board card and the optical fiber process the emulated optical signal to generate an alarm:
the simulation circuit board, the wave combining board, the optical playing board and the wave splitting board generate a simulation OCH/OMS frame according to parameters set when the board and the port are created and new parameters formed after fault setting and send the simulation OCH/OMS frame to the simulation optical fiber, the simulation optical fiber updates optical power information in the simulation OCH/OMS frame according to the parameters set when the board and the port are created and the new parameters formed after the fault setting and sends the optical power information to the other connected simulation board, and the board analyzes the received simulation OCH/OMS frame, generates a corresponding alarm signal, analyzes fields in the simulation OCH/OMS frame and carries out corresponding processing and updating.
7. The method according to claim 3, wherein the simulated OCH frame signals from the simulated optical fiber are received and processed by the circuit board in the simulated OCH frame processing function of the circuit board, and the specific processing procedure includes: the circuit board receives and processes the simulated OCH frame signals from the simulation optical fiber and sends the simulated OCH frame signals to the simulation optical fiber at regular time;
the wave combination plate has a simulation OCH/OMS frame processing function: the wave combining plate receives the simulated OCH frame signals of the multiple optical input ports, generates a new simulated OMS signal after processing, and sends the new simulated OMS signal to the simulated optical fiber;
the optical amplifier board has the following functions of processing simulation OMS frames: the optical amplifier board receives the simulated OMS frame signal from the simulated optical fiber, generates a new simulated OMS frame signal after processing, and sends the new simulated OMS frame signal to the simulated optical fiber from the optical output port;
the wave division plate has the following functions of simulating OCH/OMS frame processing: the wave-splitting plate receives the simulated OMS frame signals from the simulated optical fiber, generates a plurality of new simulated OCH frame signals after processing, and sends the signals to the simulated optical fiber from the corresponding optical output ports;
the simulation optical fiber has the following functions of processing simulation OCH frames/OMS frames: and after receiving the simulated OCH frame signals or the simulated OMS frame signals, the simulated optical fibers generate new simulated OCH frame signals or simulated OMS frame signals after processing, and send the new simulated OCH frame signals or the simulated OMS frame signals to the related board cards through the optical fiber output ports.
8. The method according to claim 4, wherein the creating of the simulation board card comprises: scanning a Board creating part in the network configuration file, adding a simulation Board to the simulation equipment for each scanned Create-Board line, and storing relevant parameters in the scanned configuration file into the relevant parameters of the simulation Board.
9. The method according to claim 8, wherein the method for implementing the optical signal fault simulation of the optical transport network includes adding a simulation port: after each simulation board is created, an added Port part in a network configuration file is scanned, for each scanned Add _ Port row, a simulation Port is added in the simulation board, relevant parameters in the scanned configuration file are stored in the relevant parameters of the simulation Port, and then a simulation OCH/OMS frame processing function of the simulation board is started.
10. The method of claim 4, wherein the creating of the simulation fiber comprises: scanning a Fiber creating part in a configuration file of the simulation optical transmission network, and creating a simulation optical Fiber object for each scanned Create _ Fiber row; storing relevant parameters in the scanned script file into the attributes of the simulation optical fiber objects, and setting Status parameters of each simulation optical fiber as normal; and then starting the simulated OCH/OMS frame processing function of the simulated optical fiber.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101951532A (en) * | 2010-09-07 | 2011-01-19 | 华为技术有限公司 | Transmission and acquirement method, device and system of OTN (Optical Transport Network) network business defect information |
| CN105024854A (en) * | 2015-07-02 | 2015-11-04 | 国家电网公司 | SDH (Synchronous Digital Hierarchy) network fault simulation method |
| CN107819603A (en) * | 2016-09-14 | 2018-03-20 | 中国电信股份有限公司 | The analysis method and platform of OTN network bearer resource potential abilities |
| WO2019153726A1 (en) * | 2018-02-09 | 2019-08-15 | 烽火通信科技股份有限公司 | Path finding method and system for multiple levels of shortest routes between source network element and sink network element |
-
2020
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101951532A (en) * | 2010-09-07 | 2011-01-19 | 华为技术有限公司 | Transmission and acquirement method, device and system of OTN (Optical Transport Network) network business defect information |
| CN105024854A (en) * | 2015-07-02 | 2015-11-04 | 国家电网公司 | SDH (Synchronous Digital Hierarchy) network fault simulation method |
| CN107819603A (en) * | 2016-09-14 | 2018-03-20 | 中国电信股份有限公司 | The analysis method and platform of OTN network bearer resource potential abilities |
| WO2019153726A1 (en) * | 2018-02-09 | 2019-08-15 | 烽火通信科技股份有限公司 | Path finding method and system for multiple levels of shortest routes between source network element and sink network element |
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