CN117375711A - Optical cable detection positioning method, communication equipment and medium - Google Patents
Optical cable detection positioning method, communication equipment and medium Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0791—Fault location on the transmission path
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
- H04B10/0795—Performance monitoring; Measurement of transmission parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
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Abstract
The embodiment of the invention provides an optical cable detection and positioning method, communication equipment and a medium, wherein the method comprises the following steps: acquiring a first polarization state change rate of an optical cable; under the condition that the first polarization state change rate is in a change rate threshold range, recording a first moment, wherein the first moment is the moment of acquiring the first polarization state change rate; receiving a second moment of a second network element, wherein the second moment is the moment when the second network element obtains a second polarization state change rate; and determining target construction position information according to the first moment, the second moment and the distance value between the network elements, wherein the distance value between the network elements is the distance between the first network element and the second network element. In the technical scheme of the embodiment, the target construction position information can be quickly determined through the moment of detecting the polarization state change rate of the optical cable by the first network element and the second network element, the response can be made before the optical cable has a problem according to the target construction position information, and the service interruption can be effectively prevented, so that the user experience is improved.
Description
Technical Field
The embodiment of the invention relates to the field of communication, but is not limited to, and particularly relates to an optical cable detection and positioning method, communication equipment and 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. At present, the optical cable interruption caused by municipal construction is discovered after the interruption of the service in the transmission process, so that the experience perception of a user is poor.
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 embodiment of the invention mainly aims to provide an optical cable detection positioning method, communication equipment and medium, wherein the construction position is determined before the optical cable is in a problem, so that service interruption can be prevented, and the user experience is improved.
In a first aspect, an embodiment of the present invention provides a method for detecting and positioning an optical cable, where the method includes:
acquiring a first polarization state change rate of an optical cable;
recording a first moment when the first polarization state change rate is in a change rate threshold range, wherein the first moment is the moment when the first polarization state change rate is acquired;
receiving a second moment of a second network element, wherein the second moment is a moment when the second network element obtains a second polarization state change rate, and the second polarization state change rate is greater than the change rate threshold;
and determining target construction position information according to the first moment, the second moment and the distance value between network elements, wherein the distance value between network elements is the distance between the first network element and the second network element.
In a second aspect, an embodiment of the present invention provides a method for detecting and positioning an optical cable, where the method includes:
receiving a first moment sent by a first network element and a second moment sent by a second network element, wherein the first moment is a moment when the first network element acquires the first polarization state change rate, the second moment is a moment when the second network element acquires the second polarization state change rate, and the first polarization state change rate and the second polarization state change rate are both in a change rate threshold range;
and determining target construction position information according to the first moment, the second moment and the distance value between network elements, wherein the distance value between network elements is the distance between the first network element and the second network element.
In a third 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 cable detection positioning method according to the first or second aspect when the computer program is executed.
In a fourth aspect, a computer readable storage medium stores computer executable instructions for performing the method for detecting and positioning an optical cable according to the first or second aspect.
The embodiment of the invention comprises the following steps: acquiring a first polarization state change rate of an optical cable; under the condition that the first polarization state change rate is in a change rate threshold range, recording a first moment, wherein the first moment is the moment of acquiring the first polarization state change rate; receiving a second moment of the second network element, wherein the second moment is a moment when the second network element obtains a second polarization state change rate, and the second polarization state change rate is larger than a change rate threshold; and determining target construction position information according to the first moment, the second moment and the distance value between the network elements, wherein the distance value between the network elements is the distance between the first network element and the second network element. 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 within the change rate threshold range, so that at the moment, the target construction position information can be quickly determined through the moment when the first network element and the second network element detect the polarization state change rate of the optical cable, the response can be made before the optical cable has a problem according to the target construction position information, the service interruption can be effectively prevented, and the 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 fiber optic cable inspection positioning method according to one embodiment of the present invention;
FIG. 2 is a schematic diagram of an application scenario for performing an optical cable detection positioning method according to an embodiment of the present invention;
FIG. 3 is a schematic view of an optical cable provided by one embodiment of the present invention;
FIG. 4 is a schematic view of a bunsen ball provided in one embodiment of the present invention;
fig. 5 is a flowchart of an optical cable detection positioning method applied to a first network element according to an embodiment of the present invention;
fig. 6 is a flowchart of an optical cable detection positioning method applied to a first network element according to another embodiment of the present invention;
FIG. 7 is a schematic diagram of an application scenario for performing an optical cable detection positioning method according to another embodiment of the present invention;
FIG. 8 is a flow chart of a method for detecting and positioning an optical cable applied to a controller according to another embodiment of the present invention;
FIG. 9 is a flow chart of a method for detecting and positioning an optical cable applied to a controller according to another embodiment of the present invention;
fig. 10 is a schematic diagram of a method for performing a switch to a target path in a fiber optic cable detection positioning method 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 an optical cable detection and positioning method, communication equipment and a medium, wherein the method comprises the following steps: acquiring a first polarization state change rate of an optical cable; under the condition that the first polarization state change rate is in a change rate threshold range, recording a first moment, wherein the first moment is the moment of acquiring the first polarization state change rate; receiving a second moment of the second network element, wherein the second moment is a moment when the second network element obtains a second polarization state change rate, and the second polarization state change rate is larger than a change rate threshold; and determining target construction position information according to the first moment, the second moment and the distance value between the network elements, wherein the distance value between the network elements is the distance between the first network element and the second network element. 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 within the change rate threshold range, so that at the moment, the target construction position information can be quickly determined through the moment when the first network element and the second network element detect the polarization state change rate of the optical cable, the response can be made before the optical cable has a problem according to the target construction position information, the service interruption can be effectively prevented, and the 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 detecting and positioning an optical cable 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, the memory 120 optionally includes memory remotely located with respect to the processor 110, which may be connected to the system platform architecture 100 via 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.
As shown in fig. 2, fig. 2 is a schematic diagram of an application scenario of an optical cable detection positioning method according to an embodiment of the present invention. The application scene is based on a distributed ASON control scene, and comprises a first network element, a second network element, a third network element and a fourth network element, wherein the first network element is a source end station provided with a polarization detection module, the second network element is a sink end station provided with the polarization detection module, and the third network element and the fourth network element are pass-through stations. Each site device side runs a distributed control plane, namely ASON (Automatically Switched Optical Network, automatic switched optical network) in the figure, so as to realize the control of the service. The service realizes end-to-end communication through a device integrating or separating the receiving and transmitting. The service transmitting end (source end station) transmits a coherent optical signal with a specific polarization state, and the receiving end (sink end station) realizes coherent reception. The device for receiving the service can realize the detection of the polarization state change of the service.
It should be noted that the polarization detection device may be a polarization analyzer, may be an oDSP chip, and is not 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, and the network elements set on the paths are not specifically limited in this embodiment. For example: the first network element can be a source end station provided with a polarization detection module or a destination end station provided with the polarization detection module; the second network element may be a source end station provided with a polarization detection module, or may be a destination end station provided with a polarization detection module.
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), as shown in fig. 3. 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.
While the polarization states are generally described in two ways, namely, jones Vector (Jones Vector) and Stokes Vector (Stokes Vector). The jones vector has two components, only the fully polarized light can be described, while the stokes vector overcomes the shortfall of the jones vector, and the four components are used for describing the polarization state of the light, and the light in any state can be described.
The stokes vector is in the form of: s= [ S ] 0 S 1 S 2 S 3 ] T The 4 parameters represent total light intensity, horizontal preference of polarized light, positive 45 degree preference, and right-handed polarization preference, respectively. If the stokes vector is normalized by the light intensity as follows:
drawing three other components as coordinates in a three dimensional coordinate system, all possible polarization states (including partially polarized light and natural light) will constitute a solid sphere of radius 1, referred to as a bungjia sphere, as shown in fig. 4. On the bungjia sphere, the point on the equator represents linearly polarized light, the two poles represent left-hand circularly polarized light and right-hand circularly polarized light respectively, the other points on the sphere represent elliptically polarized light, the points in the sphere represent partially polarized light, and the sphere center represents natural light.
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 optical cable detection positioning method of the present invention are presented below to solve the problems in the foregoing embodiments.
As shown in fig. 5, fig. 5 is a flowchart of an optical cable detecting and positioning method according to an embodiment of the present invention, where the optical cable detecting and positioning method according to an embodiment of the present invention is applied to a first network element, and may include, but is not limited to, step S100, step S200, step S300, and step S400.
Step S100, a first polarization state change rate of the optical cable is obtained.
Specifically, the polarization state change rate of the optical cable between the first network element and the second network element is monitored through the polarization detection module of the first network element.
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 step S200, when the first polarization state change rate is within the change rate threshold range, a first time is recorded, where the first time is a time when the first polarization state change rate is obtained.
Specifically, when the ground construction 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 the transmission service in the optical fiber can be influenced, and the change rate of the polarization state is suddenly changed. Then when the first network element monitors that the first polarization state change rate is within the change rate threshold range, which indicates that a construction event exists on the ground above the optical cable, the moment (first moment) when the first polarization state change rate is acquired is recorded.
The change rate threshold range is generated according to a plurality of polarization state change rates monitored under the historical construction event, and the present embodiment is not particularly limited.
In an embodiment, in general, the construction event is a continuous event, and in order to determine the construction event more accurately, the determining condition may be set such that, in a case where the first polarization state change rate is within the change rate threshold range and the duration of the polarization state change rate of the optical cable within the change rate threshold range is greater than or equal to the time threshold, when the above condition is satisfied, the vibration event to which the optical cable is subjected is determined as an engineering event, and the first time is recorded, where the engineering event characterizes that the optical cable is subjected to the vibration problem of the optical cable triggered by the construction engineering.
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. Under the condition that 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 larger than the maximum value of the change rate threshold range, the external construction characteristics are not met, the non-engineering event is determined, the processing is not performed, and the first moment does not need to be recorded.
In the determination of the non-engineering event, a determination condition that the duration of the third polarization state change rate greater than the maximum value of the change rate threshold range is less than the time threshold may be added, which is not particularly limited in this embodiment.
Step S300, receiving a second time of the second network element, where the second time is a time when the second network element obtains a second polarization state change rate, and the second polarization state change rate is greater than the change rate threshold.
Specifically, since the second network element and the first network element are on the same service transmission path, the first network element monitors the first polarization state change rate within the change rate threshold range, and at the same time, the second network element can also monitor the second polarization state change rate within the change rate threshold range, and then the second network element can send the second moment to the first network element.
And step S400, determining target construction position information according to the first moment, the second moment and the distance value between the network elements, wherein the distance value between the network elements is the distance between the first network element and the second network element.
Specifically, after the first network element receives the second time sent by the second network element, the target construction position information can be determined according to the first time, the second time and the distance value between the network elements (the distance value between the network elements is the distance between the first network element and the second network element). Namely, 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, then, at the moment when the polarization state change rate of the optical cable is detected by the first network element and the second network element, the target construction position information can be rapidly determined, the reaction can be carried out before the optical cable has a problem according to the target construction position information, and the service interruption can be effectively prevented, so that the user experience is improved.
In an embodiment, when the ground construction 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 the transmission service in the optical fiber can be affected, and the change rate of the polarization state is suddenly changed. The polarization detection modules of the first network element and the second network element detect that the first polarization state change rate and the second polarization state change rate of the optical cable are higher at the first moment and the second moment respectively and accord with the change rate threshold range representing the characteristics of external construction events, so that the information of external vibration construction of the optical cable is identified. Assuming that the first network element is a source station defaulted by the service, the second network element is a destination station, the destination station sends the source station based on an ASON signaling network, the destination station also recognizes a construction event, and the moment when the construction event starts is a second moment; the source site then bases on the formula: l- (T) 1 -T 2 ) C, determining target construction position information, wherein L is the distance between the first network element and the second network element, and T is 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). After the target construction position information is determined, early warning information can be sent 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 first network element and the second network element 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.
It should be noted that, the distance value (optical fiber length) between network elements may be configured manually before the network operates, or may be obtained after detecting the optical fiber by OTDR (optical time domain reflectometer, optical time-domain reflectometer), which is not limited in this embodiment.
FIG. 6 is a flowchart of a method for detecting and positioning an optical cable according to another embodiment of the present invention; after step S400, the method includes, but is not limited to including, step S610, step S620, and step S630.
Step S610, determining a problem link according to the target construction position information;
step S620, determining a target path according to the problem link, wherein the target path does not comprise the problem link;
step S630, the business is switched to the target path for transmission.
Specifically, the target construction position information calculated in the above embodiment may be information of a distance relative to the first network element or information of a distance relative to the second network element, and since the distance between each network element is known during construction, in a service path sequentially formed by the first network element, the third network element, the fourth network element and the second network element, a problem link in the service path may be determined through the target construction position information, then, a target path for service transmission is redetermined according to the problem link, the target path does not include the problem link, and then, the service is switched to a new target path, so as to ensure that the service is not interrupted by construction, thereby improving user experience.
In addition, as shown in fig. 7, fig. 7 is a schematic diagram of an application scenario of the optical cable detection positioning method according to an embodiment of the present invention. The application scene is a scene of a centralized management unit for realizing network control, and comprises a first network element, a second network element, a third network element, a fourth network element and a centralized management unit, wherein the centralized management unit is respectively in communication connection with the first network element, the second network element, the third network element and the fourth network element, the first network element is a source end site provided with a polarization detection module, the second network element is a sink end site provided with the polarization detection module, and the third network element and the fourth network element are through sites. The centralized management unit may, but is not limited to: network management, SDN/SDON controller, PCE (Path Computation Element ).
In addition, as shown in fig. 8, fig. 8 is a flowchart of a method for detecting and positioning an optical cable according to another embodiment of the present invention; the method is applied to a controller, which is a centralized management unit, and may include, but is not limited to, steps S810 and S820.
Step S810, receiving a first time sent by a first network element and a second time sent by a second network element, where the first time is a time when the first network element obtains a first polarization state change rate, and the second time is a time when the second network element obtains a second polarization state change rate, and both the first polarization state change rate and the second polarization state change rate are within a change rate threshold range.
Specifically, in a network controlled by the centralized management unit, when the polarization detection modules of the first network element and the second network element detect that the first polarization state change rate and the second polarization state change rate begin to be suddenly changed and are both within the change rate threshold range, the first moment and the second moment are recorded, and the first moment and the second moment are reported to the centralized management unit.
In an embodiment, when the ground construction 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 the transmission service in the optical fiber can be affected, and the change rate of the polarization state is suddenly changed. When the polarization detection modules of the first network element and the second network element monitor that the first polarization state change rate and the second polarization state change rate are in the change rate threshold range, the situation that the ground above the optical cable has a construction event is described, the moment (first moment) of acquiring the first polarization state change rate and the moment (second moment) of acquiring the second polarization state change rate are recorded, and the first moment and the second moment are sent to the centralized management unit.
The change rate threshold range is generated according to a plurality of polarization state change rates monitored under the historical construction event, and the present embodiment is not particularly limited.
In an embodiment, in general, the construction event is a continuous event, and in order to determine the construction event more accurately, the determination condition may be set such that, in a case where the first polarization state change rate is within the change rate threshold range and the duration of the polarization state change rate of the optical cable within the change rate threshold range is greater than or equal to the time threshold, when the above condition is satisfied, the vibration event to which the optical cable is subjected is determined as an engineering event, and the first time when the first polarization state change rate is initially detected within the change rate threshold range is recorded, the engineering event characterizes that the optical cable is subjected to the vibration problem of the optical cable due to the construction engineering.
And step S820, determining target construction position information according to the first moment, the second moment and the distance value between the network elements, wherein the distance value between the network elements is the distance between the first network element and the second network element.
Specifically, after the centralized management unit receives the first time and the second time sent by the first network element and the second network element, the target construction position information can be determined according to the first time, the second time and the distance value between the network elements (the distance value between the network elements is the distance between the first network element and the second network element). Namely, 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, then, at the moment when the polarization state change rate of the optical cable is detected by the first network element and the second network element, the target construction position information can be rapidly determined, the reaction can be carried out before the optical cable has a problem according to the target construction position information, and the service interruption can be effectively prevented, so that the user experience is improved.
In an embodiment, when the ground construction 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 the transmission service in the optical fiber can be affected, and the change rate of the polarization state is suddenly changed. The polarization detection modules of the first network element and the second network element detect that the first polarization state change rate and the second polarization state change rate of the optical cable are higher at the first moment and the second moment respectively and accord with the change rate threshold range representing the characteristics of external construction events, so that the information of external vibration construction of the optical cable is identified. Assume thatThe first network element is a source end station defaulted by the service, the second network element is a destination end station, the destination end station sends the source end station based on an ASON signaling network, the destination end station also recognizes a construction event, and the moment when the construction event starts is a second moment; then the source end station and the destination end station send the first time and the second time to a centralized management unit, and the centralized management unit is based on the formula: l- (T) 1 -T 2 ) C, determining target construction position information, wherein L is the distance between the first network element and the second network element, and T is 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). After the target construction position information is determined, the centralized management unit can generate early warning information to prompt operation and maintenance personnel to go to a construction site for further processing; the new target path between the first network element and the second network element 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 centralized management unit calculates a first optical fiber length value relative to the first network element according to the first moment, the second moment and the distance value between the network elements, and determines target construction position information according to the first optical fiber length value; or, a second optical fiber length value corresponding to the second network element is obtained by calculating according to the first time, the second time and the distance value between the network elements, and the target construction position information is determined according to the second optical fiber length value, which is not particularly limited in this embodiment.
FIG. 9 is a flowchart of a method for detecting and positioning an optical cable according to another embodiment of the present invention; after step S820, the method includes, but is not limited to including, step S910, step S920, and step S930.
Step S910, determining a problem link according to the target construction position information;
step S920, determining a target path according to the problem link, wherein the target path does not include the problem link;
step S930, switching the service to the target path for transmission.
Specifically, the target construction position information calculated in the above embodiment may be information of a distance relative to the first network element or information of a distance relative to the second network element, and since the distance between each network element is known during construction, in a service path sequentially formed by the first network element, the third network element, the fourth network element and the second network element, a problem link in the service path may be determined through the target construction position information, then, a target path for service transmission is redetermined according to the problem link, the target path does not include the problem link, and then, the service is switched to a new target path, so as to ensure that the service is not interrupted by construction, thereby improving user experience.
In an embodiment, as shown in fig. 10, a target path from a first network element to a second network element is calculated, where the target path needs to avoid a problem link (a link between a fourth network element and the second network element), and the target path is the first network element-third network element-fourth network element-fifth network element-second network element, and switches the service to the newly calculated target path, so as to ensure that the service is not interrupted by construction.
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 cable detection positioning method of the above-described embodiments are stored in the memory, and when executed by the processor, the cable detection positioning method of the above-described embodiments is performed, for example, the method steps S100 to S400 in fig. 5, the method steps S610 to S630 in fig. 6, the method steps S810 to S820 in fig. 8, and the method steps S910 to S930 in fig. 9 described above are performed.
Furthermore, an embodiment of the present invention provides a computer-readable storage medium storing computer-executable instructions for performing the optical cable detection positioning method of the controller described above, for example, performing the method steps S100 to S400 in fig. 5, the method steps S610 to S630 in fig. 6, the method steps S810 to S820 in fig. 8, and the method steps S910 to S930 in fig. 9 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 (11)
1. An optical cable detection positioning method applied to a first network element, the method comprising:
acquiring a first polarization state change rate of an optical cable;
recording a first moment when the first polarization state change rate is in a change rate threshold range, wherein the first moment is the moment when the first polarization state change rate is acquired;
receiving a second moment of a second network element, wherein the second moment is a moment when the second network element obtains a second polarization state change rate, and the second polarization state change rate is greater than the change rate threshold;
and determining target construction position information according to the first moment, the second moment and the distance value between network elements, wherein the distance value between network elements is the distance between the first network element and the second network element.
2. The method for detecting and locating an optical cable according to claim 1, wherein determining the target construction position information according to the first time, the second time and the distance value between network elements comprises:
calculating a first optical fiber length value relative to the first network element according to the first moment, the second moment and the inter-network element distance value, and determining target construction position information according to the first optical fiber length value;
or calculating a second optical fiber length value relative to the second network element according to the first time, the second time and the inter-network element distance value, and determining target construction position information according to the second optical fiber length value.
3. The method for detecting and locating a fiber optic cable according to claim 1, wherein said recording a first time when said first polarization state change rate is within a change rate threshold range comprises:
and under the condition that the first polarization state change rate is in a change rate threshold range and the duration is greater than or equal to a time threshold, determining an engineering event, and recording a first moment, wherein the engineering event represents that the optical cable is subjected to an optical cable vibration problem triggered by construction engineering.
4. A method of detecting and locating a fiber optic cable according to claim 3, further comprising:
acquiring a third polarization state change rate of the optical cable;
in case the third polarization state change rate is greater than the maximum value of the change rate threshold range, or in case the duration of the third polarization state change rate being greater than the maximum value of the change rate threshold range is less than a time threshold, it is determined that the first moment of time does not need to be recorded.
5. The method for detecting and locating an optical cable according to claim 1, wherein after the target construction position information is determined according to the first time, the second time and the distance value between network elements, the method further comprises:
determining a problem link according to the target construction position information;
determining a target path according to the problem link, wherein the target path does not comprise the problem link;
and switching the service to the target path for transmission.
6. An optical cable detection positioning method applied to a controller, the method comprising:
receiving a first moment sent by a first network element and a second moment sent by a second network element, wherein the first moment is a moment when the first network element acquires the first polarization state change rate, the second moment is a moment when the second network element acquires the second polarization state change rate, and the first polarization state change rate and the second polarization state change rate are both in a change rate threshold range;
and determining target construction position information according to the first moment, the second moment and the distance value between network elements, wherein the distance value between network elements is the distance between the first network element and the second network element.
7. The method for detecting and locating an optical cable according to claim 6, wherein determining the target construction position information according to the first time, the second time and the distance value between network elements comprises:
calculating a first optical fiber length value relative to the first network element according to the first moment, the second moment and the inter-network element distance value, and determining target construction position information according to the first optical fiber length value;
or calculating a second optical fiber length value relative to the second network element according to the first time, the second time and the inter-network element distance value, and determining target construction position information according to the second optical fiber length value.
8. The method for detecting and locating an optical cable according to claim 6, wherein after the target construction position information is determined according to the first time, the second time and the distance value between network elements, the method further comprises:
determining a problem link according to the target construction position information;
determining a target path according to the problem link, wherein the target path does not comprise the problem link;
and switching the service to the target path for transmission.
9. The fiber optic cable detection positioning method of claim 6, wherein the first and second rates of change of polarization are both within a range of rate of change thresholds, and wherein the duration of the first and second rates of change of polarization are both greater than or equal to a time threshold.
10. 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 optical cable test positioning method according to any one of claims 1 to 5 or the optical cable test positioning method according to any one of claims 6 to 9 when executing the computer program.
11. A computer-readable storage medium storing computer-executable instructions for performing the fiber optic cable detection positioning method of any one of claims 1 to 5 or for performing the fiber optic cable detection positioning method of any one of claims 6 to 9.
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| CN202210752757.0A CN117375711A (en) | 2022-06-29 | 2022-06-29 | Optical cable detection positioning method, communication equipment and medium |
| PCT/CN2023/076232 WO2024001211A1 (en) | 2022-06-29 | 2023-02-15 | Optical cable detection and positioning method, and communication device and medium |
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| CN202210752757.0A CN117375711A (en) | 2022-06-29 | 2022-06-29 | Optical cable detection positioning method, communication equipment and medium |
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| US4915468A (en) * | 1987-02-20 | 1990-04-10 | The Board Of Trustees Of The Leland Stanford Junior University | Apparatus using two-mode optical waveguide with non-circular core |
| US10873390B1 (en) * | 2019-06-06 | 2020-12-22 | Subcom, Llc | System and apparatus for detecting and locating external aggression on an undersea cable |
| CN113141208B (en) * | 2020-01-19 | 2022-02-15 | 烽火通信科技股份有限公司 | Method and system for realizing optical channel path health degree evaluation and fault positioning |
| CN112202493A (en) * | 2020-09-27 | 2021-01-08 | 国家电网有限公司 | Fault detection method, device and system for communication line |
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