CN117375759A - Shared optical multiplexing link determination method, communication device, and medium - Google Patents
Shared optical multiplexing link determination method, communication device, and medium Download PDFInfo
- Publication number
- CN117375759A CN117375759A CN202210752762.1A CN202210752762A CN117375759A CN 117375759 A CN117375759 A CN 117375759A CN 202210752762 A CN202210752762 A CN 202210752762A CN 117375759 A CN117375759 A CN 117375759A
- Authority
- CN
- China
- Prior art keywords
- change rate
- path
- characteristic data
- monitoring point
- station
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 200
- 238000000034 method Methods 0.000 title claims abstract description 55
- 238000004891 communication Methods 0.000 title claims abstract description 13
- 230000008859 change Effects 0.000 claims abstract description 170
- 238000012544 monitoring process Methods 0.000 claims abstract description 85
- 230000010287 polarization Effects 0.000 claims description 63
- 239000013307 optical fiber Substances 0.000 claims description 22
- 238000003860 storage Methods 0.000 claims description 13
- 238000004364 calculation method Methods 0.000 claims description 5
- 238000004590 computer program Methods 0.000 claims description 5
- 238000007726 management method Methods 0.000 description 33
- 238000010276 construction Methods 0.000 description 29
- 239000000835 fiber Substances 0.000 description 19
- 238000001514 detection method Methods 0.000 description 12
- 230000005540 biological transmission Effects 0.000 description 9
- 238000012423 maintenance Methods 0.000 description 8
- 108091034117 Oligonucleotide Proteins 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000001960 triggered effect Effects 0.000 description 5
- 230000011664 signaling Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- 238000004422 calculation algorithm Methods 0.000 description 2
- 230000001066 destructive effect Effects 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000009828 non-uniform distribution Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000007723 transport mechanism Effects 0.000 description 1
Classifications
-
- 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
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation
Abstract
The embodiment of the invention provides a method for determining a shared optical multiplexing link, communication equipment and a medium, wherein the method comprises the following steps: receiving a first optical characteristic data change rate sent by a first monitoring point of a first path; receiving a second optical characteristic data change rate sent by a second monitoring point of the second path, wherein the first optical characteristic data change rate and the second optical characteristic data change rate are both in a change rate threshold range; performing similarity comparison on the first optical characteristic data change rate and the second optical characteristic data change rate to obtain a similarity comparison result; and under the condition that the similarity comparison result is larger than the similarity threshold value, determining that the first path and the second path have a shared optical multiplexing link. In the technical scheme of the embodiment, the shared optical multiplexing link exists in the first path and the second path according to the similarity comparison result, and the shared optical multiplexing link exists in the multi-service before the optical cable is in question, so that the risk of multi-service interruption can be reduced, and the user experience is improved.
Description
Technical Field
Embodiments of the present invention relate to, but are not limited to, the field of communications, and in particular, to a method for determining a shared optical multiplexed link, a communication device, and a medium.
Background
Municipal construction is a major factor in causing cable breaks, and cables are typically buried in pipelines 1-2 meters deep underground. When rough construction occurs, the construction machine digs the ground gradually, resulting in the risk of damaging the cable. In particular, when multiple non-homologous non-syngeneic services pass through a shared optical multiplexing link, and the shared optical multiplexing link has external vibration, the risk of multiple service interruption increases.
Disclosure of Invention
The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.
The main purpose of the embodiment of the invention is to provide a method for determining a shared optical multiplexing link, communication equipment and a medium, wherein the shared optical multiplexing link is determined to exist in multiple services before an optical cable is in question, so that the risk of interruption of the multiple services can be reduced, and the user experience is improved.
In a first aspect, an embodiment of the present invention provides a method for determining a shared optical multiplexing link, where the method includes:
receiving a first optical characteristic data change rate sent by a first monitoring point of a first path;
receiving a second optical characteristic data change rate sent by a second monitoring point of a second path, wherein the first optical characteristic data change rate and the second optical characteristic data change rate are both in a change rate threshold range;
performing similarity comparison on the first optical characteristic data change rate and the second optical characteristic data change rate to obtain a similarity comparison result;
and under the condition that the similarity comparison result is larger than a similarity threshold value, determining that a shared optical multiplexing link exists between the first path and the second path.
In a second aspect, an embodiment of the present invention provides a communication device, including: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method of shared optical multiplexing link determination as described in the first or second aspect when the computer program is executed.
In a third aspect, a computer-readable storage medium stores computer-executable instructions for performing the method for determining a shared optical multiplexing link according to the first or second aspect.
The embodiment of the invention comprises the following steps: receiving a first optical characteristic data change rate sent by a first monitoring point of a first path; receiving a second optical characteristic data change rate sent by a second monitoring point of the second path, wherein the first optical characteristic data change rate and the second optical characteristic data change rate are both in a change rate threshold range; performing similarity comparison on the first optical characteristic data change rate and the second optical characteristic data change rate to obtain a similarity comparison result; and under the condition that the similarity comparison result is larger than the similarity threshold value, determining that the first path and the second path have a shared optical multiplexing link. In the technical scheme of the embodiment, when the optical cable is affected by construction, the polarization state change rate of the optical cable can be in the change rate threshold range, so that at the moment, similarity comparison can be performed according to the first optical characteristic data change rate detected by the first monitoring point of the first path and the second optical characteristic data change rate detected by the second monitoring point of the second path, then the first path and the second path are determined to have a shared optical multiplexing link according to the similarity comparison result, and the shared optical multiplexing link is determined to exist in multiple services before the optical cable has a problem, so that the risk of multiple service interruption can be reduced, and user experience is improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
FIG. 1 is a schematic diagram of a system architecture platform for performing a method of determining a shared optical multiplexed link according to one embodiment of the present invention;
FIG. 2 is a schematic diagram of an application scenario for performing a method for determining a shared optical multiplexing link according to an embodiment of the present invention;
FIG. 3 is a flow chart of a method for determining a shared optical multiplexed link according to one embodiment of the present invention;
fig. 4 is a flowchart of a method for determining a shared optical multiplexing link according to another embodiment of the present invention;
fig. 5 is a flowchart of a method for determining a shared optical multiplexing link according to another embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It should be noted that although functional block division is performed in a device diagram and a logic sequence is shown in a flowchart, in some cases, the steps shown or described may be performed in a different order than the block division in the device, or in the flowchart. The terms first, second and the like in the description, in the claims and in the above-described figures, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
The embodiment of the invention provides a method for determining a shared optical multiplexing link, communication equipment and a medium, wherein the method comprises the following steps: receiving a first optical characteristic data change rate sent by a first monitoring point of a first path; receiving a second optical characteristic data change rate sent by a second monitoring point of the second path, wherein the first optical characteristic data change rate and the second optical characteristic data change rate are both in a change rate threshold range; performing similarity comparison on the first optical characteristic data change rate and the second optical characteristic data change rate to obtain a similarity comparison result; and under the condition that the similarity comparison result is larger than the similarity threshold value, determining that the first path and the second path have a shared optical multiplexing link. In the technical scheme of the embodiment, when the optical cable is affected by construction, the polarization state change rate of the optical cable can be in the change rate threshold range, so that at the moment, similarity comparison can be performed according to the first optical characteristic data change rate detected by the first monitoring point of the first path and the second optical characteristic data change rate detected by the second monitoring point of the second path, then the first path and the second path are determined to have a shared optical multiplexing link according to the similarity comparison result, and the shared optical multiplexing link is determined to exist in multiple services before the optical cable has a problem, so that the risk of multiple service interruption can be reduced, and user experience is improved.
Embodiments of the present invention will be further described below with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a schematic diagram of a system platform architecture for performing a method for determining a shared optical multiplexing link according to an embodiment of the present invention.
In the example of fig. 1, the system platform architecture 100 is provided with a processor 110 and a memory 120, wherein the processor 110 and the memory 120 may be connected by a bus or otherwise, in fig. 1 by way of example.
Memory 120, as a non-transitory computer-readable storage medium, may be used to store non-transitory software programs as well as non-transitory computer-executable programs. In addition, memory 120 may include high-speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some implementations, memory 120 may optionally include memory located remotely from processor 110, which may be connected to sites in the various network paths through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
It will be appreciated by those skilled in the art that the system platform architecture 100 may be applied to a 5G communication network system, a mobile communication network system that is evolved later, and the like, and the present embodiment is not limited thereto.
Those skilled in the art will appreciate that the system platform architecture 100 shown in fig. 1 is not limiting of the embodiments of the invention, and may include more or fewer components than shown, or may combine certain components, or a different arrangement of components.
Fig. 2 is a schematic diagram of an application scenario of a method for determining a shared optical multiplexing link according to an embodiment of the present invention. The application scenario is based on a distributed ASON control scenario, and the application scenario includes a first path for transmitting a first service, a second path for transmitting a second service, and a system platform architecture of fig. 1, where the system platform architecture is communicatively connected to stations on the first path and the second path, respectively, the first path includes a first source station 211, a first intermediate station 212, a second intermediate station 213, a third intermediate station 214, and a first sink station 215, the second path includes a second source station 221, a second intermediate station 213, a third intermediate station 214, and a second sink station 222, where the first source station 211, the first sink station 215, the second source station 221, and the second sink station 222 are each provided with a detection module 230 (polarization detection module/phase polarization detection module), that is, the first source station 211 and/or the first sink station 215 of the first path may be a first monitoring point in the first path, and the second source station 221 and/or the second sink station 222 of the second path may be a second monitoring point in the second path.
It should be noted that, the polarization detection module may be a polarization optical time domain reflectometer POTDR, and the phase polarization detection module may be a distributed optical fiber acoustic wave sensing and monitoring system DAS, which is not limited in this embodiment.
It should be noted that, the first monitoring point and the second monitoring point may also be provided with a coherent optical module, for example: an oDSP chip.
It should be noted that, the system platform architecture may be a centralized management unit in the scenario of this embodiment, or a network management device, which is not specifically limited in this embodiment.
The different stations are connected by optical fibers. The method of the present invention requires that the lengths of the optical fibers carrying the bi-directional traffic be equal or close. In an optical transport network (Optical Transport Network, OTN)/dense optical multiplexing (Dense Wavelength Division Multiplexing, DWDM) network, traffic is bi-directional, and bi-directional traffic is transmitted and received in two fibers of the same cable, respectively. Under the individual scenes, there are scenes using single-fiber bidirectional same-wavelength, namely, the receiving and transmitting service is in the same optical fiber, and forward and reverse simultaneous transmission is performed by using the same wavelength. The optical fibers carrying the bi-directional business receiving and transmitting can be equal or close in length.
It should be noted that, the application scenario may be different according to different paths of the service, different stations set on the paths, and different numbers of paths according to different numbers of the service, where the number of paths is at least two, and the embodiment is not limited specifically.
In view of the fluctuation of light, light is an electromagnetic wave, and the light vector is perpendicular to the propagation direction, and the light field vector of the light wave can be generally represented by an electric vector, and in a plane perpendicular to the propagation direction of light, the light vector has different vibration states, which are called polarization states (State of Polarization, SOP). The polarization state is evolving continuously as light is transmitted in the fiber. The birefringence of the fiber is randomly distributed so that the change in polarization state is random. The effect of birefringence is in fact to shift the two linear polarization states differently. There are two types of birefringence in single-mode fibers, i.e., intrinsic birefringence and induced birefringence. Intrinsic birefringence refers to the birefringence of an optical fiber produced during production, mainly due to non-uniform distribution of stress, materials, etc. Induced birefringence refers to birefringence resulting from changes in some physical quantity from the outside, such as stress, bending, temperature, electric field, magnetic field, twisting, etc. If the two polarizations experience different losses, fiber delays, dispersion, nonlinearities, etc., the amplitude and/or phase difference between the two polarizations of the same optical signal at a certain time may be changed, resulting in a change in the polarization state of the optical signal.
The polarization state changes continuously during the transmission of polarized light in the optical fiber. Especially when the fiber environment is affected by external factors, the polarization state change rate is different. For example, when an aerial fiber optic cable is struck by lightning, the polarization of polarized light transmitted in the fiber can change rapidly due to the sharp change in the electromagnetic field. When the outside of the optical cable is shocked and knocked, the polarization state also changes.
Based on the system platform architecture, various embodiments of the method for determining a shared optical multiplexing link according to the present invention are presented below to solve the problems in the foregoing embodiments.
As shown in fig. 3, fig. 3 is a flowchart of a method for determining a shared optical multiplexing link according to an embodiment of the present invention, and the method for determining a shared optical multiplexing link according to the embodiment of the present invention may include, but is not limited to, step S100, step S200, step S300, and step S400.
Step S100, a first optical characteristic data change rate sent by a first monitoring point of a first path is received.
Specifically, a first phase change rate sent by a first monitoring point of the first path is received, wherein the first phase change rate is detected by the first monitoring point through the distributed optical fiber sound wave sensing monitoring system DAS; or receiving a first polarization state change rate sent by a first monitoring point of the first path, wherein the first polarization state change rate is detected by the first monitoring point through a POTDR (polarized light time Domain reflectometer).
Step S200, receiving a second optical characteristic data change rate sent by a second monitoring point of the second path, wherein the first optical characteristic data change rate and the second optical characteristic data change rate are both within a change rate threshold range.
Specifically, a second phase change rate sent by a second monitoring point of the second path is received, wherein the second phase change rate is detected by the second monitoring point through the distributed optical fiber sound wave sensing monitoring system DAS; or receiving a second polarization state change rate sent by a second monitoring point of the second path, wherein the second polarization state change rate is detected by the second monitoring point through the polarized light time domain reflectometer POTDR.
In an embodiment, a first optical characteristic data change rate (a first phase change rate or a first polarization state change rate) of an optical cable of a first path is monitored by a polarization detection module of a first monitoring point of the first path, and when the monitored first optical characteristic data change rate is within a change rate threshold value range, it is proved that a vibration event occurs in the optical cable on the first path, then the first monitoring point sends the first optical characteristic data change rate to a centralized management unit; similarly, the polarization detection module of the second monitoring point of the second path is used for monitoring the second optical characteristic data change rate (the second phase change rate or the second polarization state change rate) of the optical cable of the second path, and when the monitored second optical characteristic data change rate is within the change rate threshold range, the optical cable on the second path is proved to have a vibration event, then the second monitoring point can send the second optical characteristic data change rate to the centralized management unit.
It should be noted that, the monitoring of the polarization state change rate of the optical cable by the polarization detection module of the first network element may be real-time, or may be monitoring according to a preset time interval, which is not limited in this embodiment.
In an embodiment, the change rate threshold is generated according to a plurality of polarization state change rates monitored under historical construction events, when the construction of the ground above the optical cable is started at a certain moment, the excavator and the perforating machine knock the ground, so that the ground can vibrate, the optical fiber in the optical cable can be triggered to vibrate, the polarization state of transmission service in the optical fiber can be affected, and the polarization state change rate is suddenly changed. When the first optical characteristic data change rate of the optical cable of the first path monitored by the polarization detection module of the first monitoring point is in the range of the change rate threshold value, indicating that a construction event exists on the ground above the optical cable, and then sending the first optical characteristic data change rate to the centralized management unit; similarly, when the second optical characteristic data change rate of the optical cable of the second path monitored by the polarization detection module of the second monitoring point is within the change rate threshold range, it is indicated that a construction event exists on the ground above the optical cable, and then the second optical characteristic data change rate is sent to the centralized management unit. Thus, the centralized management unit receives a first rate of change of optical characteristic data sent by a first monitoring point of the first path and a second rate of change of optical characteristic data sent by a second monitoring point of the second path.
It should be noted that, at a certain moment, when the optical cable is struck by lightning, an extremely strong electromagnetic field environment change is generated, so that the polarization state of the transmission service in the optical fiber is affected, and the polarization state is changed rapidly. The polarization detection modules of the first network element and the second network element detect the rapid change of the polarization state at the first moment and the second moment respectively, and the detected third polarization state change rate is at the maximum value of the range within the change rate threshold range, and the duration time is smaller than the time threshold value, and the polarization detection modules do not accord with the external construction characteristics, are determined to be non-engineering events, do not process and do not need to record the first moment.
And step S300, performing similarity comparison on the first light characteristic data change rate and the second light characteristic data change rate to obtain a similarity comparison result.
Specifically, after the centralized management unit receives the first light characteristic data change rate and the second light characteristic data change rate, similarity comparison is performed on the first light characteristic data change rate and the second light characteristic data change rate, and a similarity comparison result is obtained.
In an embodiment, the first optical characteristic data change rate is a first phase change rate, the second optical characteristic data change rate is a second phase change rate, and the central management unit performs autocorrelation calculation on the first phase change rate and the second phase change rate to obtain a similarity comparison result.
In an embodiment, the first optical characteristic data change rate is a first polarization state change rate, the second optical characteristic data change rate is a second polarization state change rate, and the central management unit performs convolution calculation on the first polarization state change rate and the second polarization state change rate to obtain a similarity comparison result.
Step S400, under the condition that the similarity comparison result is larger than the similarity threshold value, determining that a shared optical multiplexing link exists between the first path and the second path.
Specifically, if the similarity comparison result obtained by the central management unit through calculation by adopting an autocorrelation/convolution method is larger than a similarity threshold value, judging that a shared multiplexing section exists between a first path for transmitting a first service and a second path for transmitting a second service; the centralized management system can determine that a shared optical multiplexing link exists in the multi-service before the optical cable is in question, and can reduce the risk of multi-service interruption, thereby improving user experience.
In an embodiment, when a vibration event occurs on a path of traffic transmission communicatively connected to the centralized management system, the centralized management system receives a first optical characteristic data change rate sent by a first monitoring point on a first path where the vibration event occurs and a second optical characteristic data change rate sent by a second monitoring point on a second path where the vibration event occurs, where the first optical characteristic data change rate and the second optical characteristic data change rate are both within a change rate threshold; then, the centralized management system can perform similarity comparison on the first light characteristic data change rate and the second light characteristic data change rate to obtain a similarity comparison result; under the condition that the centralized management system judges that the similarity comparison result is larger than the similarity threshold value, the centralized management system can determine that the first path and the second path have a shared optical multiplexing link. In the technical scheme of the embodiment, when the optical cable is affected by construction, the polarization state change rate of the optical cable can be in the change rate threshold range, at this time, the centralized management system can perform similarity comparison according to the first light characteristic data change rate detected by the first monitoring point of the first path and the second light characteristic data change rate detected by the second monitoring point of the second path, then determine that a shared light multiplexing link exists between the first path and the second path according to the similarity comparison result, and determine that the shared light multiplexing link exists in multiple services before the optical cable has a problem, so that the risk of multiple service interruption can be reduced, and user experience is improved.
As shown in fig. 4, fig. 4 is a flowchart of a method for determining a shared optical multiplexing link according to another embodiment of the present invention; step S400 includes, but is not limited to, including step S410, step S420, and step S430.
Step S410, receiving first problem link information sent by a first monitoring point, wherein the first problem link information is obtained by calculating the first monitoring point according to a first moment when a first source station monitors a first optical characteristic data change rate, a second moment when a first sink station monitors the first optical characteristic data change rate and a first station distance, and the first station distance is the distance between the first source station and the first sink station;
step S420, receiving second problem link information sent by a second monitoring point, wherein the second problem link information is obtained by calculating a second station distance between a second source station and a second sink station according to a third time when the second monitoring point monitors a second optical characteristic data change rate, a fourth time when the second sink station monitors the second optical characteristic data change rate and the second station distance;
step S430, determining that the first problem link corresponding to the first problem link information and the second problem link corresponding to the second problem link information are shared optical multiplexing links when the similarity comparison result is larger than the similarity threshold.
In an embodiment, when the construction of the ground above a certain section of the optical cable of the first path is started at a certain moment, the excavator and the perforating machine knock the ground, so that the ground can vibrate, the optical fiber in the optical cable can be triggered to vibrate, the polarization state of the transmission service in the optical fiber can be affected, and the change rate of the polarization state is suddenly changed. The first source station and the first sink station respectively detect that the first optical characteristic data change rate of the optical cable is higher at the first moment and the second moment, and the change rate threshold range of the characteristic of the external construction event is met, so that the information of the external vibration construction of the optical cable is identified. Assuming that the first sink station sends a second moment to the first source station based on the ASON signaling network; the first source site then bases on the formula: l (L) 1 -(T 1 -T 2 ) C, capable of determining and transmitting the first problem link information to the centralized management unit, wherein L 1 T is the distance between the first source site and the first destination site 1 For the first moment of time of day,T 2 for the second moment, c is the propagation velocity of light in the fiber, and in a typical fiber, the speed of light is 2 x 10 8 m/s. (note that the speed of light in vacuum is 3 x 10 8 m/s, 2 x 10 in the fiber 8 m/s)。
Similarly, when the construction of the ground above a certain section of the optical cable on the second path is started at a certain moment, the excavator and the perforating machine knock the ground, so that the ground can vibrate, the optical fiber in the optical cable can be triggered to vibrate, the polarization state of the transmission service in the optical fiber can be affected, and the change rate of the polarization state is suddenly changed. The second source station and the second destination station respectively detect that the second optical characteristic data change rate of the optical cable is higher at the third moment and the fourth moment, and the change rate threshold range of the characteristic of the external construction event is met, so that the information of the external vibration construction of the optical cable is identified. The second sink station sends a fourth moment to the second source station based on the ASON signaling network; the second source site then bases on the formula: l (L) 2 -(T 3 -T 4 ) C, capable of determining and transmitting the second problem link information to the centralized management unit, wherein L 2 T is the distance between the second source site and the second sink site 3 For the first moment, T 4 For the second moment, c is the propagation velocity of light in the fiber, and in a typical fiber, the speed of light is 2 x 10 8 m/s。
In the method of the present embodiment, the step S410 and the step S420 may be performed by using only one step to determine the first problem link information or the second problem link information, so that the position information of the common optical multiplexing link may be determined, which is not particularly limited in the present embodiment.
Under the condition that the similarity comparison result is larger than the similarity threshold value, the centralized management unit determines a first problem link corresponding to the received first problem link information and a second problem link corresponding to the second problem link information as a shared optical multiplexing link of the first path and the second path, determines that the shared optical multiplexing link exists in the multi-service before the optical cable has a problem, and can send early warning information to a network management system to prompt operation and maintenance personnel to go to a construction site for further processing; the new target path between the source site and the destination site can be calculated based on the existing protocol and algorithm, and the service is switched to the new target path, so that the service is ensured not to be interrupted by construction, the risk of multi-service interruption can be reduced, and the user experience is improved.
In an embodiment, after receiving the first problem link information and the second problem link information, the centralized management unit may calculate, according to the importance of the service, a first target path according to the first problem link and the first service, where the first target path does not include the first problem link, and then send the first target path to the first source station, so that the first service is switched to be transmitted in the first target path; or obtaining a second target path according to the second problem link and the second service, wherein the second target path does not comprise the second problem link; and sending the second target path to the second source station so as to switch the second service to be transmitted in the second target path. The risk of simultaneous interruption of multiple services can be reduced, and user experience is improved.
In an embodiment, under the condition that the first problem link and the second problem link are not provided with switching links, the monitoring priority of the first problem link and the second problem link is improved, an operation and maintenance person monitors the shared optical multiplexing link in a key way, and when a destructive event occurs to the shared optical multiplexing link, risks can be early warned by monitoring the polarization state and the phase change mode. For example: the first duration sent by the first monitoring point of the first path exceeds a time threshold, and/or the second duration sent by the second monitoring point of the second path exceeds a time threshold, so that the optical cable is proved to be influenced by engineering events, and then the centralized management unit can generate early warning information to inform operation and maintenance personnel, and the operation and maintenance personnel can intervene in the engineering to the construction site at the moment to prevent multi-service interruption, so that user experience is improved.
As shown in fig. 5, fig. 5 is a flowchart of a method for determining a shared optical multiplexing link according to another embodiment of the present invention; step S400 includes, but is not limited to, including step S510, step S520, and step S530.
Step S510, receiving a first moment and a second moment sent by a first monitoring point, wherein the first moment is the moment when a first source station monitors a first optical characteristic data change rate, the second moment is the moment when a first sink station monitors the first optical characteristic data change rate, a first problem link is determined according to the first moment, the second moment and a first station distance, and the first station distance is the distance between the first source station and the first sink station;
step S520, receiving a third moment and a fourth moment sent by a second monitoring point, wherein the third moment is the moment when the second source station monitors the second optical characteristic data change rate, the fourth moment is the moment when the second sink station monitors the second optical characteristic data change rate, and a second problem link is determined according to the third moment, the fourth moment and a second station distance, and the second station distance is the distance between the second source station and the second sink station;
in step 530, in the case that the similarity comparison result is greater than the similarity threshold, it is determined that the first problem link and the second problem link are a shared optical multiplexing link.
Specifically, when the construction of the ground above a certain section of the optical cable of the first path is started at a certain moment, the excavator and the perforating machine knock the ground, so that the ground can vibrate, the optical fiber in the optical cable can be triggered to vibrate, the polarization state of the transmission service in the optical fiber can be influenced, and the change rate of the polarization state is suddenly changed. The first source station and the first sink station respectively detect that the first optical characteristic data change rate of the optical cable is higher at the first moment and the second moment, and the change rate threshold range of the characteristic of the external construction event is met, so that the information of the external vibration construction of the optical cable is identified. The first sink station sends a second moment to the first source station based on the ASON signaling network, and the first source station sends the first moment and the second moment to the centralized management unit; the centralized management unit then bases on the formula: l (L) 1 -(T 1 -T 2 ) C, capable of determining a first problem link, wherein L 1 T is the distance between the first source site and the first destination site 1 For the first moment, T 2 For the second moment, c is the propagation velocity of light in the fiber, and in a typical fiber, the speed of light is 2 x 10 8 m/s。(Note that the speed of light in vacuum is 3 x 10 8 m/s, 2 x 10 in the fiber 8 m/s)；
When the construction of the ground above a certain section of the optical cable on the second path is started at a certain moment, the excavator and the perforating machine knock the ground, so that the ground can vibrate, the optical fiber in the optical cable can be triggered to vibrate, the polarization state of the transmission service in the optical fiber can be influenced, and the change rate of the polarization state is suddenly changed. The second source station and the second destination station respectively detect that the second optical characteristic data change rate of the optical cable is higher at the third moment and the fourth moment, and the change rate threshold range of the characteristic of the external construction event is met, so that the information of the external vibration construction of the optical cable is identified. The second sink station sends a third moment to the second source station based on the ASON signaling network, and the second source station sends the third moment and a fourth moment to the centralized management unit; the centralized management unit then bases on the formula: l (L) 2 -(T 3 -T 4 ) C, capable of determining a second problem link, wherein L 2 T3 is the first moment, T, is the distance between the second source station and the second destination station 4 For the second moment, c is the propagation velocity of light in the fiber, and in a typical fiber, the speed of light is 2 x 10 8 m/s。
In the method of the present embodiment, the step S510 and the step S520 may be performed by using only one step to determine the first problem link information or the second problem link information, so that the position information of the common optical multiplexing link may be determined, which is not particularly limited in the present embodiment.
Under the condition that the centralized management unit judges that the similarity comparison result is larger than the similarity threshold value, the centralized management unit determines the first problem link and the second problem link as shared optical multiplexing links of the first path and the second path, determines that the shared optical multiplexing links exist in multiple services before the problem occurs on the optical cable, and can send early warning information to a network management system to prompt operation and maintenance personnel to go to a construction site for further processing; the new target path between the source site and the destination site can be calculated based on the existing protocol and algorithm, and the service is switched to the new target path, so that the service is ensured not to be interrupted by construction, the risk of multi-service interruption can be reduced, and the user experience is improved.
In an embodiment, after the centralized management unit calculates a first problem link and a second problem link, a first target path may be calculated according to the importance of the service and according to the first problem link and the first service, where the first target path does not include the first problem link, and then the first target path is sent to the first source station, so that the first service is switched to be transmitted in the first target path; or obtaining a second target path according to the second problem link and the second service, wherein the second target path does not comprise the second problem link; and sending the second target path to the second source station so as to switch the second service to be transmitted in the second target path. The risk of simultaneous interruption of multiple services can be reduced, and user experience is improved.
In an embodiment, under the condition that the first problem link and the second problem link are not provided with switching links, the monitoring priority of the first problem link and the second problem link is improved, an operation and maintenance person monitors the shared optical multiplexing link in a key way, and when a destructive event occurs to the shared optical multiplexing link, risks can be early warned by monitoring the polarization state and the phase change mode. For example: the first duration sent by the first monitoring point of the first path exceeds a time threshold, and/or the second duration sent by the second monitoring point of the second path exceeds a time threshold, so that the optical cable is proved to be influenced by engineering events, and then the centralized management unit can generate early warning information to inform operation and maintenance personnel, and the operation and maintenance personnel can intervene in the engineering to the construction site at the moment to prevent multi-service interruption, so that user experience is improved.
Additionally, one embodiment of the present invention provides a communication device comprising: memory, a processor, and a computer program stored on the memory and executable on the processor.
The processor and the memory may be connected by a bus or other means.
It should be noted that, the computer in this embodiment may be correspondingly configured to include the memory and the processor in the embodiment shown in fig. 1, and may form a part of the system architecture platform in the embodiment shown in fig. 1, where the two are the same inventive concept, so that the two have the same implementation principle and beneficial effects, which are not described in detail herein.
The non-transitory software program and instructions required to implement the shared optical multiplexed link determination method of the above embodiments are stored in the memory, and when executed by the processor, the shared optical multiplexed link determination method of the above embodiments is performed, for example, the method steps S100 to S400 in fig. 3, the method steps S410 to S430 in fig. 4, and the method steps S510 to S530 in fig. 5 described above are performed.
Furthermore, an embodiment of the present invention provides a computer-readable storage medium storing computer-executable instructions for performing the shared optical multiplexing link determining method of the controller described above, for example, performing the method steps S100 to S400 in fig. 3, the method steps S410 to S430 in fig. 4, and the method steps S510 to S530 in fig. 5 described above.
Those of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as known to those skilled in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. Furthermore, as is well known to those of ordinary skill in the art, communication media typically include computer readable instructions, data structures, program modules, or other data in a modulated data signal, such as a carrier wave or other transport mechanism, and may include any information delivery media.
While the preferred embodiment of the present invention has been described in detail, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit and scope of the present invention, and these equivalent modifications or substitutions are included in the scope of the present invention as defined in the appended claims.
Claims (12)
1. A method of shared optical multiplexing link determination, the method comprising:
receiving a first optical characteristic data change rate sent by a first monitoring point of a first path;
receiving a second optical characteristic data change rate sent by a second monitoring point of a second path, wherein the first optical characteristic data change rate and the second optical characteristic data change rate are both in a change rate threshold range;
performing similarity comparison on the first optical characteristic data change rate and the second optical characteristic data change rate to obtain a similarity comparison result;
and under the condition that the similarity comparison result is larger than a similarity threshold value, determining that a shared optical multiplexing link exists between the first path and the second path.
2. The method of claim 1, wherein the first optical characteristic data rate of change is a first phase rate of change or a first polarization state rate of change, and the second optical characteristic data rate of change is a second phase rate of change or a second polarization state rate of change.
3. The method for determining a shared optical multiplexing link according to claim 2, wherein said performing a similarity comparison between the first optical characteristic data change rate and the second optical characteristic data change rate to obtain a similarity comparison result includes:
performing autocorrelation calculation on the first phase change rate and the second phase change rate to obtain a similarity comparison result;
or, performing convolution calculation on the first polarization state change rate and the second polarization state change rate to obtain a similarity comparison result.
4. The method of claim 2, wherein the receiving the first rate of change of the optical characteristic data sent by the first monitoring point of the first path comprises:
receiving a first phase change rate sent by a first monitoring point of the first path, wherein the first phase change rate is detected by the first monitoring point through a distributed optical fiber acoustic wave sensing monitoring system DAS;
or,
and receiving a first polarization state change rate sent by a first monitoring point of the first path, wherein the first polarization state change rate is detected by the first monitoring point through a polarized light time domain reflectometer POTDR.
5. The method of claim 2, wherein the receiving the first rate of change of the optical characteristic data sent by the first monitoring point of the first path comprises:
receiving a second phase change rate sent by a second monitoring point of the second path, wherein the second phase change rate is detected by the second monitoring point through a distributed optical fiber acoustic wave sensing monitoring system DAS;
or,
and receiving a second polarization state change rate sent by a second monitoring point of the second path, wherein the second polarization state change rate is detected by the second monitoring point through a polarized light time domain reflectometer POTDR.
6. The method of determining a shared optical multiplexing link according to claim 1, wherein the first monitoring point includes a first source station and a first sink station, the second monitoring point includes a second source station and a second sink station, and wherein determining that the first path and the second path have a shared optical multiplexing link if the similarity comparison result is greater than a similarity threshold comprises:
receiving first problem link information sent by the first monitoring point, wherein the first problem link information is obtained by calculating a first station distance according to a first moment when the first monitoring point monitors the first light characteristic data change rate, a second moment when the first sink station monitors the first light characteristic data change rate and the first station distance, the first station distance is the distance between the first source station and the first sink station,
or, receiving second problem link information sent by the second monitoring point, where the second problem link information is obtained by calculating, by the second monitoring point, according to a third time when the second source station monitors the second optical characteristic data change rate, a fourth time when the second sink station monitors the second optical characteristic data change rate, and a second station distance, where the second station distance is a distance between the second source station and the second sink station;
and under the condition that the similarity comparison result is larger than a similarity threshold value, determining that a first problem link corresponding to the first problem link information and a second problem link corresponding to the second problem link information are shared optical multiplexing links.
7. The method of determining a shared optical multiplexing link according to claim 1, wherein the first monitoring point includes a first source station and a first sink station, the second monitoring point includes a second source station and a second sink station, and wherein determining that the first path and the second path have a shared optical multiplexing link if the similarity comparison result is greater than a similarity threshold comprises:
receiving a first time and a second time sent by the first monitoring point, wherein the first time is the time when the first source station monitors the first optical characteristic data change rate, the second time is the time when the first sink station monitors the first optical characteristic data change rate, a first problem link is determined according to the first time, the second time and a first station distance, the first station distance is the distance between the first source station and the first sink station,
or, receiving a third moment and a fourth moment sent by the second monitoring point, wherein the third moment is the moment when the second source station monitors the second optical characteristic data change rate, the fourth moment is the moment when the second sink station monitors the second optical characteristic data change rate, a second problem link is determined according to the third moment, the fourth moment and a second station distance, and the second station distance is the distance between the second source station and the second sink station;
and under the condition that the similarity comparison result is larger than a similarity threshold value, determining that the first problem link and the second problem link are shared optical multiplexing links.
8. The shared optical multiplexing link determination method according to claim 6 or 7 wherein the first path is used for transmitting first traffic and the second path is used for transmitting second traffic, the method further comprising:
obtaining a first target path according to the first problem link and the first service, wherein the first target path does not comprise the first problem link;
transmitting the first target path to the first source station so that the first service is switched to be transmitted in the first target path;
or,
obtaining a second target path according to the second problem link and the second service, wherein the second target path does not comprise the second problem link;
and sending the second target path to the second source station so as to switch the second service to be transmitted in the second target path.
9. The method of shared optical multiplexing link determination according to claim 6 wherein the method further comprises:
and under the condition that the first problem link and the second problem link are not provided with switching links, the monitoring priority of the first problem link and the second problem link is improved.
10. The method of claim 7, wherein the first duration of time transmitted at the first monitoring point of the first path exceeds a time threshold and/or the second duration of time transmitted at the second monitoring point of the second path exceeds a time threshold, and wherein the pre-warning information is generated.
11. A communication device, comprising: a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the method for determining a shared optical multiplexing link according to any of claims 1 to 10 when executing the computer program.
12. A computer-readable storage medium storing computer-executable instructions for performing the shared optical multiplexing link determining method according to any one of claims 1 to 10.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210752762.1A CN117375759A (en) | 2022-06-29 | 2022-06-29 | Shared optical multiplexing link determination method, communication device, and medium |
| PCT/CN2023/076019 WO2024001207A1 (en) | 2022-06-29 | 2023-02-14 | Common optical multiplexing link determination method, communication device and medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210752762.1A CN117375759A (en) | 2022-06-29 | 2022-06-29 | Shared optical multiplexing link determination method, communication device, and medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117375759A true CN117375759A (en) | 2024-01-09 |
Family
ID=89383945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210752762.1A Pending CN117375759A (en) | 2022-06-29 | 2022-06-29 | Shared optical multiplexing link determination method, communication device, and medium |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN117375759A (en) |
| WO (1) | WO2024001207A1 (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107809280A (en) * | 2016-09-09 | 2018-03-16 | 中兴通讯股份有限公司 | A kind of fiber-optic monitoring method and device |
| JP6747264B2 (en) * | 2016-11-17 | 2020-08-26 | 富士通株式会社 | Network management device, network management program, and network management method |
| CN111585645B (en) * | 2019-02-18 | 2023-03-31 | 富士通株式会社 | Polarization state change monitoring device and method caused by optical link and optical receiver |
| CN113438020B (en) * | 2020-03-23 | 2022-08-19 | 华为技术有限公司 | Method and device for detecting co-cable probability |
| CN113324569B (en) * | 2021-05-21 | 2022-03-18 | 复旦大学 | Dual-wavelength unidirectional ring type distributed optical fiber sensing and positioning system |
| CN113949446B (en) * | 2021-09-08 | 2023-04-21 | 中国联合网络通信集团有限公司 | Optical fiber monitoring method, device, equipment and storage medium |
-
2022
- 2022-06-29 CN CN202210752762.1A patent/CN117375759A/en active Pending
-
2023
- 2023-02-14 WO PCT/CN2023/076019 patent/WO2024001207A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024001207A1 (en) | 2024-01-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10168247B2 (en) | Method, apparatus and system for minimally intrusive fiber identification | |
| JP5640246B2 (en) | System and method for distributed fault detection and recovery | |
| CN103905114B (en) | Optical cable line failure point locating method, device and system | |
| CN113381804B (en) | Method and device for detecting co-cable probability | |
| EP3018838B1 (en) | Optical path processing method and apparatus | |
| CN103647601A (en) | Fiber monitoring system | |
| WO2021004315A1 (en) | Method and apparatus for detecting operational conditions of an optical link in an optical network | |
| CN101540936A (en) | Station terminal device, communication system, subscriber device management method | |
| CN108809410B (en) | Optical cable fault detection method and optical cable fault detection system | |
| CN117375759A (en) | Shared optical multiplexing link determination method, communication device, and medium | |
| KR20110061254A (en) | Detecting apparatus and method for optical line in passive optical network system | |
| WO2023082774A1 (en) | Shared-routing detection method and apparatus | |
| CN117375711A (en) | Optical cable detection positioning method, communication equipment and medium | |
| Zhao et al. | Field trail of shared risk optical fiber links detection based on OTDR and AI algorithm | |
| Zheng et al. | Robust design against network failures of shared backup path protected sdm-eons | |
| Savory | Fiber Optic Network Reliability & Security for NRENs: The Threat and Potential Solutions | |
| Izquierdo et al. | Optical fibre bus protection architecture for the networking of sensors | |
| Ibhaze et al. | Performance Analysis of Fiber Attenuation in Passive Optical Networks | |
| CN103368774A (en) | System for dynamically managing inventory and quality of communication transmission resources |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication |