Same route detection method and device

Abstract

An embodiment of the present application provides a co-route detection method, which is applied to a co-route detection system and includes multiple optical fiber sensing modules, at least one excitation source terminal, and a co-route detection unit. The method includes: the co-route detection unit receives first disturbance information from a first optical fiber sensing module, and receives second disturbance information from a second optical fiber sensing module, wherein the first disturbance information and the second disturbance information are obtained after the excitation source disturbance is turned on, the first disturbance information corresponds to the first optical path, the second disturbance information corresponds to the second optical path, and the first disturbance information and the second disturbance information respectively include disturbance echo signals; based on the first disturbance information and the second disturbance information, the disturbance position of the first excitation source terminal is determined to be the co-route position of the first optical path and the second optical path. This method can adapt to dynamic changes in the network and accurately and quickly detect whether multiple optical paths are co-routed.

Description

Technical Field

[0001] The present application relates to the field of optical communications, and more specifically, to a same-route detection method and device. Background Art

[0002] Currently, optical fiber is a key transmission medium in optical communication systems and is attracting widespread attention. External resources such as optical cables, pipelines, and poles are key areas of optical network management. When two service paths share the same optical cable route, the same trench (underground) or the same trench (aerial), and the same optical cross-connection box or closure, this is considered a co-route.

[0003] The exponential growth in the number of optical cables, the complexity of the cable network, and the frequent changes (such as digging, splicing, re-laying, and rerouting) have made real-time and accurate management of the cable network extremely difficult. When the Geographic Information System (GIS) information maintained by the management interface is inconsistent with the actual physical GIS information, the planned primary and backup paths may have the same route.

[0004] Because two paths in the same route are physically close together, a failure on one path often leads to a simultaneous failure on the other (for example, if two optical cables in the same trench are severed by an excavator). When both primary and backup paths share the same route, there's a high risk of simultaneous outages. If this happens, the primary and backup protection systems will completely fail, compromising service reliability and availability.

[0005] Therefore, how to adapt to dynamic changes in the network and accurately and quickly detect the same routing of multiple optical paths is an urgent problem to be solved. Summary of the Invention

[0006] The embodiments of the present application provide a same-route identification detection device that can adapt to dynamic changes in the network and accurately and quickly detect the same routes of multiple optical paths.

[0007] In a first aspect, a co-route detection method is provided, which is applied to a co-route detection system, wherein the co-route detection system includes multiple optical fiber sensing modules, at least one excitation source terminal and a co-route detection unit, the multiple optical fiber sensing modules include a first optical fiber sensing module and a second optical fiber sensing module, and the at least one excitation source terminal includes a first excitation source terminal. The method includes: the co-route detection unit receives first disturbance information from the first optical fiber sensing module, and receives second disturbance information from the second optical fiber sensing module, the first disturbance information and the second disturbance information are obtained after the first excitation source terminal turns on the excitation source disturbance, the first disturbance information corresponds to the first optical path, the second disturbance information corresponds to the second optical path, and the first disturbance information and the second disturbance information respectively include disturbance echo signals; the co-route detection unit determines, based on the first disturbance information and the second disturbance information, that the disturbance position of the first excitation source terminal is the co-route position of the first optical path and the second optical path.

[0008] It should be noted that the method can be executed by the same route detection unit, or can also be executed by a chip or circuit used for the same route detection unit, and this application does not limit this. For ease of description, the following description is based on the example of the same route detection unit.

[0009] According to the solution provided by this application, after the first excitation source terminal initiates excitation source perturbation, the perturbation location is determined to be the co-route location of the first and second optical paths by receiving perturbation information from different optical paths. This co-route identification method based on actively scrambled optical fiber sensor data can quickly and accurately identify whether two optical paths share a co-route.

[0010] Optionally, the present application is also applicable to identifying and detecting that multiple lightpaths have co-route segments. For example, if there is another disturbance location, the co-route detection unit, based on the above implementation, determines that this other disturbance location is also a co-route location for the first and second lightpaths. Therefore, the geographical segment formed by these two disturbance locations can be considered to be the co-route segment for the first and second lightpaths.

[0011] It should be understood that in the above implementation, the first fiber optic sensing module and the second fiber optic sensing module are respectively deployed at the first network element and the second network element, that is, one network element corresponds to one fiber optic sensing module. Optionally, multiple fiber optic sensing modules (for example, the first fiber optic sensing module and the second fiber optic sensing module) can be deployed at one network element (for example, the first network element), and the network element can determine the corresponding disturbance information detected by different fiber optic sensing modules based on the port (for example, the fiber interface unit (FIU) port) identifier, etc. The technical solution of the present application does not specifically limit the number of network elements and the number of fiber optic sensing modules. The above is only an exemplary description and should not constitute any limitation on the technical solution of the present application.

[0012] It should also be understood that the multiple optical paths detected by the multiple optical fiber sensing modules deployed at the same network element can be the same route or different routes, and this application does not make specific limitations on this.

[0013] In the technical solution of this application, the acquisition of disturbance echo signals can be understood as: utilizing the operating principle of an optical time domain reflectometer (OTDR) to monitor and collect phase information generated by Rayleigh scattering in an optical fiber, thereby determining the transmission characteristics of the optical fiber at various locations. For example, by detecting the phase of two optical fibers at the disturbance location at the excitation source terminal, it is further determined whether the two optical paths have the same path at the disturbance location.

[0014] In combination with the first aspect, in some implementations of the first aspect, the first excitation source terminal controls the excitation source disturbance by encoding.

[0015] Exemplarily, a coding method is used to control whether the excitation source terminal is activated. For example, when the codeword is 0, it is used to indicate that the perturbation of the excitation source terminal is stopped. When the codeword is 1, it is used to indicate that the perturbation of the excitation source terminal is started. The above is merely an exemplary description and should not constitute any limitation on the technical solution of this application.

[0016] In combination with the first aspect, in certain implementations of the first aspect, the excitation source of the first excitation source terminal uses mechanical waves or sound waves.

[0017] In combination with the first aspect, in certain implementations of the first aspect, a method for generating the disturbance code of the first excitation source terminal includes: a mechanical wave coding method based on single-frequency time domain coding and / or an acoustic wave coding method based on multi-frequency combination coding.

[0018] Exemplarily, the fiber optic sensing module will give a vibration detection result in each detection cycle (for example, 0.5s) (detected vibration can be marked as 1, and no vibration is marked as 0). Since mechanical vibration start and stop have inertia, fast (within 0.5s) start and stop coding is not operational. The technical solution of the present application adopts multiple continuous fiber optic sensing detection cycles as a vibration code (vibration is 1, non-vibration is 0). Vibration coding can be used in two ways: first, the vibration (M detection cycles) / non-vibration coding (N detection cycles) time is not fixed, and different codes are generated by controlling the M / N ratio; second, the vibration (M detection cycles) / non-vibration coding (N detection cycles) time is fixed (M=N), and communication coding (for example, code division multiple access (CDMA)) is used to generate different codes.

[0019] In combination with the first aspect, in certain implementations of the first aspect, the same-route detection unit determines that the disturbance position of the first excitation source terminal is the same-route position of the first optical path and the second optical path based on the first disturbance information and the second disturbance information, including: when the similarity between the disturbance echo signals of the first disturbance information and the second disturbance information is greater than a preset threshold, the same-route detection unit determines that the disturbance position of the first excitation source terminal is the same-route position of the first optical path and the second optical path.

[0020] In combination with the first aspect, in certain implementations of the first aspect, the same-route detection unit receives third disturbance information from the first excitation source terminal, and the third disturbance information includes at least one of the following information: the disturbance time when the first excitation source terminal starts the excitation source disturbance, the location of the first excitation source terminal, and the disturbance code of the first excitation source terminal; the same-route detection unit determines that the disturbance position of the first excitation source terminal is the same-route position of the first optical path and the second optical path based on the first disturbance information, the second disturbance information and the third disturbance information.

[0021] It should be noted that the same-route detection unit can determine whether the first and second optical paths have the same route at the disturbance location of the excitation source terminal based on the first, second, and third disturbance information. This implementation method can further improve the accuracy. Ideally, the third disturbance information reported by the excitation source terminal should be identical in disturbance time and location to the first and second disturbance information.

[0022] It should be understood that the first disturbance information and the second disturbance information are monitored and reported by the first and second optical fiber sensing modules, respectively, while the third disturbance information is directly reported by the excitation source terminal. Furthermore, the same-route detection unit can determine the first disturbance code and the second disturbance code corresponding to the first and second optical paths, respectively, based on the first disturbance information and / or the second disturbance information, and the third disturbance code can be directly obtained from the third disturbance information.

[0023] In other words, the first disturbance information, the second disturbance information, and the third disturbance information have different reporting objects, different sources, and different specific reporting forms.

[0024] In combination with the first aspect, in certain implementations of the first aspect, the same-route detection unit determines the disturbance position of the first excitation source terminal as the same-route position of the first optical path and the second optical path based on the first disturbance information, the second disturbance information, and the third disturbance information, including: the same-route detection unit determines the first disturbance code based on the first disturbance information, and / or determines the second disturbance code based on the second disturbance information; when the similarity between at least one disturbance code among the first disturbance code and the second disturbance code and the disturbance code of the first excitation source terminal is greater than a preset threshold, the same-route detection unit determines that the disturbance position of the first excitation source terminal is the same-route position of the first optical path and the second optical path.

[0025] In this implementation, coding-based detection can effectively resist environmental interference and improve the efficiency and accuracy of same-route detection.

[0026] It should be noted that the above method of judging whether multiple optical paths have the same route at the disturbance position of the excitation source terminal based on the disturbance code and / or disturbance echo can be used independently or in combination, and the technical solution of this application does not make specific limitations on this.

[0027] In combination with the first aspect, in some implementations of the first aspect, the first optical fiber sensing module and the second optical fiber sensing module are respectively deployed in the first network element and the second network element, and the first excitation source terminal is deployed at any position of the first optical path and / or the second optical path.

[0028] Exemplarily, the first excitation source terminal may be deployed in a pipe well, an optical cross-connect box, a fiber fusion box, an overhead pole, or the like of the optical path.

[0029] In combination with the first aspect, in some implementations of the first aspect, the same-route detection unit sends a request message to the first optical fiber sensing module and the second optical fiber sensing module, where the request message is used to request obtaining the first disturbance information and the second disturbance information, respectively.

[0030] In combination with the first aspect, in certain implementations of the first aspect, at least one excitation source terminal includes a second excitation source terminal, and the method further includes: a co-route detection unit receives third disturbance information from the first optical fiber sensing module, and receives fourth disturbance information from the second optical fiber sensing module, the third disturbance information and the fourth disturbance information are obtained after the second excitation source terminal turns on the excitation source disturbance, the third disturbance information corresponds to the first optical path, the fourth disturbance information corresponds to the second optical path, the third disturbance information and the fourth disturbance information include disturbance time and disturbance echo signal; the co-route detection unit generates first optical fiber geographic information system GIS information based on the first disturbance information and the third disturbance information, and generates second optical fiber geographic information system GIS information based on the second disturbance information and the fourth disturbance information; the co-route detection unit determines that the disturbance position of the first excitation source terminal and / or the disturbance position of the second excitation source terminal are the co-route positions of the first optical path and the second optical path based on the matching space having similar points of the first optical fiber GIS information and the second optical fiber GIS information.

[0031] The fiber optic geographic information system (GIS) information can be understood as the actual geographic location of the fiber, for example, the longitude and latitude of the fiber.

[0032] In this implementation, by determining multiple excitation source terminals deployed on multiple optical paths and detecting whether multiple optical paths have the same route at multiple disturbance locations, automatic identification of the same route in the entire network is achieved, supporting simultaneous detection of multiple points and doubling the efficiency.

[0033] In combination with the first aspect, in certain implementations of the first aspect, the same-route detection unit receives at least one disturbance information from the first optical fiber sensing module, and the at least one disturbance information corresponds one-to-one to at least one excitation source terminal within the first range. The first range is a range with a radius of R and the first excitation source terminal closest to the target fiber break point as the center. The target fiber break point is the fiber break position detected by the first optical fiber sensing module in the first optical path; the same-route detection unit determines at least one second excitation source terminal as the next hop from the first excitation source terminal based on the at least one disturbance information within the first range, and the at least one second excitation source terminal is an excitation source terminal on the first optical path.

[0034] In combination with the first aspect, in certain implementations of the first aspect, the same-route detection unit receives at least one disturbance information from the first optical fiber sensing module, and the at least one disturbance information corresponds one-to-one to at least one excitation source terminal within the i-th range, the i-th range is a range with the i-th excitation source terminal as the center and a radius of R, the i-th excitation source terminal is the excitation source terminal of the next hop of the i-1-th excitation source terminal on the first optical path, and i is an integer greater than or equal to 2; the same-route detection unit determines at least one i+1-th excitation source terminal of the next hop from the i-th excitation source terminal based on the at least one disturbance information within the i-th range, the at least one i+1-th excitation source terminal is the excitation source terminal closest to the third network element on the first optical path, the third network element and the first network element are the starting position and the ending position of the first optical path, and the first optical fiber sensing module is deployed in the first network element; the same-route detection unit updates the same-route of the first optical path based on the i+1 excitation source terminals.

[0035] In this implementation, a method for detecting and updating the same route in a fiber cut or cutover scenario is provided.

[0036] In a second aspect, a co-route detection method is provided, which is applied to a co-route detection system. The co-route detection system includes multiple optical fiber sensing modules, at least one excitation source terminal and a co-route detection unit. The multiple optical fiber sensing modules include a first optical fiber sensing module and a second optical fiber sensing module. The at least one excitation source terminal includes a first excitation source terminal. The method includes: after the first excitation source terminal turns on the excitation source disturbance, the first optical fiber sensing module and the second optical fiber sensing module respectively obtain first disturbance information and second disturbance information, the first disturbance information corresponds to the first optical path, and the second disturbance information corresponds to the second optical path. The first disturbance information and the second disturbance information respectively include disturbance echo signals, and the first disturbance information and the second disturbance information are used to determine that the disturbance position of the first excitation source terminal is the co-route position of the first optical path and the second optical path; the first optical fiber sensing module and the second optical fiber sensing module respectively send the first disturbance information and the second disturbance information to the co-route detection unit.

[0037] It should be noted that the method can be performed by a fiber optic sensing module (e.g., a first fiber optic sensing module and a second fiber optic sensing module), or can also be performed by a chip or circuit for the fiber optic sensing module, and this application does not limit this. For ease of description, the following description is based on an example of the method being performed by a fiber optic sensing module.

[0038] According to the solution provided by this application, after the excitation source perturbation is activated at the first excitation source terminal, the perturbation information from different optical paths is received to determine whether the perturbation location is the co-route location of the first and second optical paths. This provides a co-route identification method based on actively scrambled optical fiber sensing data, which can quickly and accurately identify whether two optical paths have the same route.

[0039] Optionally, the present application is also applicable to identifying and detecting that multiple lightpaths have co-route segments. For example, if there is another disturbance location, the co-route detection unit, based on the above implementation, determines that this other disturbance location is also a co-route location for the first and second lightpaths. Therefore, the geographical segment formed by these two disturbance locations can be considered to be the co-route segment for the first and second lightpaths.

[0040] It should be understood that in the above implementation, the first fiber optic sensing module and the second fiber optic sensing module are respectively deployed at the first network element and the second network element, that is, one network element corresponds to one fiber optic sensing module. Optionally, multiple fiber optic sensing modules (for example, the first fiber optic sensing module and the second fiber optic sensing module) can be deployed at one network element (for example, the first network element), and the network element can determine the corresponding disturbance information detected by different fiber optic sensing modules based on the port (for example, the fiber interface unit (FIU) port) identifier, etc. The technical solution of the present application does not specifically limit the number of network elements and the number of fiber optic sensing modules. The above is only an exemplary description and should not constitute any limitation on the technical solution of the present application.

[0041] It should also be understood that the multiple optical paths detected by the multiple optical fiber sensing modules deployed at the same network element can be the same route or different routes, and this application does not make specific limitations on this.

[0042] In the technical solution of this application, the acquisition of disturbance echo signals can be understood as: utilizing the operating principle of an optical time domain reflectometer (OTDR) to monitor and collect phase information generated by Rayleigh scattering in an optical fiber, thereby determining the transmission characteristics of the optical fiber at various locations. For example, by detecting the phase of two optical fibers at the disturbance location at the excitation source terminal, it is further determined whether the two optical paths have the same path at the disturbance location.

[0043] In combination with the second aspect, in some implementations of the second aspect, the first optical fiber sensing module and the second optical fiber sensing module are respectively deployed in the first network element and the second network element, and the first excitation source terminal is deployed at any position of the first optical path and / or the second optical path.

[0044] Exemplarily, the first excitation source terminal can be deployed in a pipe shaft, an optical cross-connect box, a fiber optic splice box, an overhead pole, or the like in the optical path. In conjunction with the second aspect, in certain implementations of the second aspect, the first optical fiber sensing module and the second optical fiber sensing module receive a request message from the same-route detection unit, the request message being used to request obtaining the first disturbance information and the second disturbance information, respectively.

[0045] In a third aspect, a co-route detection device is provided, including: a transceiver unit for receiving first disturbance information from a first optical fiber sensing module, and receiving second disturbance information from a second optical fiber sensing module, the first disturbance information and the second disturbance information are obtained after the first excitation source terminal turns on the excitation source disturbance, the first disturbance information corresponds to the first optical path, the second disturbance information corresponds to the second optical path, and the first disturbance information and the second disturbance information respectively include disturbance echo signals; a processing unit for determining that the disturbance position of the first excitation source terminal is the co-route position of the first optical path and the second optical path based on the first disturbance information and the second disturbance information.

[0046] Optionally, the present application is also applicable to identifying and detecting that multiple lightpaths have co-route segments. For example, if there is another disturbance location, the co-route detection unit, based on the above implementation, determines that this other disturbance location is also a co-route location for the first and second lightpaths. Therefore, the geographical segment formed by these two disturbance locations can be considered to be the co-route segment for the first and second lightpaths.

[0047] It should be understood that in the above implementation, the first fiber optic sensing module and the second fiber optic sensing module are respectively deployed at the first network element and the second network element, that is, one network element corresponds to one fiber optic sensing module. Optionally, multiple fiber optic sensing modules (for example, the first fiber optic sensing module and the second fiber optic sensing module) can be deployed at one network element (for example, the first network element), and the network element can determine the corresponding disturbance information detected by different fiber optic sensing modules based on the port (for example, the fiber interface unit (FIU) port) identifier, etc. The technical solution of the present application does not specifically limit the number of network elements and the number of fiber optic sensing modules. The above is only an exemplary description and should not constitute any limitation on the technical solution of the present application.

[0048] It should also be understood that the multiple optical paths detected by the multiple optical fiber sensing modules deployed at the same network element can be the same route or different routes, and this application does not make specific limitations on this.

[0049] In the technical solution of the present application, the acquisition of disturbance echo signals can be understood as: utilizing the working principle of an optical time domain reflectometer (OTDR) to monitor and acquire the phase information generated by Rayleigh scattering of light in an optical fiber, thereby determining the transmission characteristics of the optical fiber at various locations. For example, by detecting the phase conditions of two optical fibers at the disturbance position of the excitation source terminal, it is further detected whether the two optical paths have the same path at the disturbance position. In conjunction with the third aspect, in certain implementations of the third aspect, the first excitation source terminal controls the excitation source disturbance by encoding.

[0050] Exemplarily, a coding method is used to control whether the excitation source terminal is activated. For example, when the codeword is 0, it is used to indicate that the perturbation of the excitation source terminal is stopped. When the codeword is 1, it is used to indicate that the perturbation of the excitation source terminal is started. The above is merely an exemplary description and should not constitute any limitation on the technical solution of this application.

[0051] In combination with the third aspect, in certain implementations of the third aspect, the excitation source of the first excitation source terminal uses mechanical waves or sound waves.

[0052] In combination with the third aspect, in certain implementations of the third aspect, a method for generating the disturbance code of the first excitation source terminal includes: a mechanical wave coding method based on single-frequency time domain coding and / or an acoustic wave coding method based on multi-frequency combination coding.

[0053] Exemplarily, the fiber optic sensing module will give a vibration detection result in each detection cycle (for example, 0.5s) (detected vibration can be marked as 1, and no vibration is marked as 0). Since mechanical vibration start and stop have inertia, fast (within 0.5s) start and stop coding is not operational. The technical solution of the present application adopts multiple continuous fiber optic sensing detection cycles as a vibration code (vibration is 1, non-vibration is 0). Vibration coding can be used in two ways: first, the vibration (M detection cycles) / non-vibration coding (N detection cycles) time is not fixed, and different codes are generated by controlling the M / N ratio; second, the vibration (M detection cycles) / non-vibration coding (N detection cycles) time is fixed (M=N), and communication coding (for example, code division multiple access CDMA) is used to generate different codes.

[0054] In combination with the third aspect, in certain implementations of the third aspect, when the similarity between the disturbance echo signals of the first disturbance information and the second disturbance information is greater than a preset threshold, the processing unit is also used to determine that the disturbance position of the first excitation source terminal is the co-route position of the first optical path and the second optical path.

[0055] In combination with the third aspect, in certain implementations of the third aspect, the transceiver unit is further used to receive third disturbance information from the first excitation source terminal, and the third disturbance information includes at least one of the following information: the disturbance time when the first excitation source terminal starts the excitation source disturbance, the location of the first excitation source terminal, and the disturbance code of the first excitation source terminal; the processing unit is further used to determine that the disturbance position of the first excitation source terminal is the co-route position of the first optical path and the second optical path based on the first disturbance information, the second disturbance information and the third disturbance information.

[0056] It should be noted that the same-route detection unit can determine whether the first and second optical paths have the same route at the disturbance location of the excitation source terminal based on the first, second, and third disturbance information. This implementation method can further improve the accuracy. Ideally, the third disturbance information reported by the excitation source terminal should be identical in disturbance time and location to the first and second disturbance information.

[0057] It should be understood that the first disturbance information and the second disturbance information are monitored and reported by the first and second optical fiber sensing modules, respectively, while the third disturbance information is directly reported by the excitation source terminal. Furthermore, the same-route detection unit can determine the first disturbance code and the second disturbance code corresponding to the first and second optical paths, respectively, based on the first disturbance information and / or the second disturbance information, and the third disturbance code can be directly obtained from the third disturbance information.

[0058] In other words, the first disturbance information, the second disturbance information, and the third disturbance information have different reporting objects, different sources, and different specific reporting forms.

[0059] In combination with the third aspect, in certain implementations of the third aspect, the processing unit is further used to determine a first disturbance code based on the first disturbance information, and / or determine a second disturbance code based on the second disturbance information; when the similarity between at least one of the first disturbance code and the second disturbance code and the disturbance code of the first excitation source terminal is greater than a preset threshold, the processing unit is further used to determine that the disturbance position of the first excitation source terminal is a co-route position of the first optical path and the second optical path.

[0060] In this implementation, coding-based detection can effectively resist environmental interference and improve the efficiency and accuracy of same-route detection.

[0061] It should be noted that the above method of judging whether multiple optical paths have the same route at the disturbance position of the excitation source terminal based on the disturbance code and / or disturbance echo can be used independently or in combination, and the technical solution of this application does not make specific limitations on this.

[0062] In combination with the third aspect, in certain implementations of the third aspect, the first optical fiber sensing module and the second optical fiber sensing module are respectively deployed in the first network element and the second network element, and the first excitation source terminal is deployed at any position of the first optical path and / or the second optical path.

[0063] Exemplarily, the first excitation source terminal may be deployed in a pipe well, an optical cross-connect box, a fiber fusion box, an overhead pole, or the like of the optical path.

[0064] In combination with the third aspect, in some implementations of the third aspect, the transceiver unit is further used to send a request message to the first optical fiber sensing module and the second optical fiber sensing module, where the request message is used to request to obtain the first disturbance information and the second disturbance information respectively.

[0065] In combination with the third aspect, in certain implementations of the third aspect, at least one excitation source terminal includes a second excitation source terminal, and a transceiver unit, which is also used to receive third disturbance information from the first optical fiber sensing module and fourth disturbance information from the second optical fiber sensing module. The third disturbance information and the fourth disturbance information are obtained after the second excitation source terminal turns on the excitation source disturbance. The third disturbance information corresponds to the first optical path, and the fourth disturbance information corresponds to the second optical path. The third disturbance information and the fourth disturbance information include disturbance time and disturbance echo signal; the processing unit is also used to generate first optical fiber geographic information system GIS information based on the first disturbance information and the third disturbance information, and to generate second optical fiber geographic information system GIS information based on the second disturbance information and the fourth disturbance information; the processing unit is also used to determine that the disturbance position of the first excitation source terminal and / or the disturbance position of the second excitation source terminal are co-route positions of the first optical path and the second optical path based on the similar points in the matching space of the first optical fiber GIS information and the second optical fiber GIS information.

[0066] The fiber optic geographic information system (GIS) information can be understood as the actual geographic location of the fiber, for example, the longitude and latitude of the fiber.

[0067] In this implementation, by determining multiple excitation source terminals deployed on multiple optical paths and detecting whether multiple optical paths have the same route at multiple disturbance locations, automatic identification of the same route in the entire network is achieved, supporting simultaneous detection of multiple points and doubling the efficiency.

[0068] In combination with the third aspect, in certain implementations of the third aspect, the transceiver unit is further used to receive at least one disturbance information from the first optical fiber sensing module, and the at least one disturbance information corresponds one-to-one to at least one excitation source terminal within the first range. The first range is a range with a radius of R and the first excitation source terminal closest to the target fiber break point as the center. The target fiber break point is the fiber break position detected by the first optical fiber sensing module in the first optical path; the processing unit is further used to determine at least one second excitation source terminal that is the next hop from the first excitation source terminal based on the at least one disturbance information within the first range, and the at least one second excitation source terminal is an excitation source terminal on the first optical path.

[0069] In combination with the third aspect, in certain implementations of the third aspect, the transceiver unit is further used to receive at least one disturbance information from the first optical fiber sensing module, where the at least one disturbance information corresponds one-to-one to at least one excitation source terminal within the i-th range, the i-th range is a range with the i-th excitation source terminal as the center and a radius of R, the i-th excitation source terminal is the excitation source terminal of the next hop of the i-1-th excitation source terminal on the first optical path, and i is an integer greater than or equal to 2; the processing unit is further used to determine at least one i+1-th excitation source terminal of the next hop from the i-th excitation source terminal based on the at least one disturbance information within the i-th range, the at least one i+1-th excitation source terminal is the excitation source terminal closest to the third network element on the first optical path, the third network element and the first network element are the starting position and the ending position of the first optical path, and the first optical fiber sensing module is deployed in the first network element; the processing unit is also used to update the co-route of the first optical path based on the i+1 excitation source terminals.

[0070] In this implementation, a method for detecting and updating the same route in a fiber cut or cutover scenario is provided.

[0071] In a fourth aspect, a same-route detection device is provided, including: a processing unit, which is used for, after the first excitation source terminal turns on the excitation source disturbance, the first optical fiber sensing module and the second optical fiber sensing module respectively obtain first disturbance information and second disturbance information, the first disturbance information corresponds to the first optical path, and the second disturbance information corresponds to the second optical path, the first disturbance information and the second disturbance information respectively include disturbance echo signals, and the first disturbance information and the second disturbance information are used to determine that the disturbance position of the first excitation source terminal is the same-route position of the first optical path and the second optical path; a transceiver unit, which is used for the first optical fiber sensing module and the second optical fiber sensing module to send the first disturbance information and the second disturbance information to the same-route detection unit respectively.

[0072] Optionally, the present application is also applicable to identifying and detecting that multiple lightpaths have co-route segments. For example, if there is another disturbance location, the co-route detection unit, based on the above implementation, determines that this other disturbance location is also a co-route location for the first and second lightpaths. Therefore, the geographical segment formed by these two disturbance locations can be considered to be the co-route segment for the first and second lightpaths.

[0073] It should be understood that in the above implementation, the first fiber optic sensing module and the second fiber optic sensing module are respectively deployed at the first network element and the second network element, that is, one network element corresponds to one fiber optic sensing module. Optionally, multiple fiber optic sensing modules (for example, the first fiber optic sensing module and the second fiber optic sensing module) can be deployed at one network element (for example, the first network element), and the network element can determine the corresponding disturbance information detected by different fiber optic sensing modules based on the port (for example, the fiber interface unit (FIU) port) identifier, etc. The technical solution of the present application does not specifically limit the number of network elements and the number of fiber optic sensing modules. The above is only an exemplary description and should not constitute any limitation on the technical solution of the present application.

[0074] It should also be understood that the multiple optical paths detected by the multiple optical fiber sensing modules deployed at the same network element can be the same route or different routes, and this application does not make specific limitations on this.

[0075] In the technical solution of this application, the acquisition of disturbance echo signals can be understood as: utilizing the operating principle of an optical time domain reflectometer (OTDR) to monitor and collect phase information generated by Rayleigh scattering in an optical fiber, thereby determining the transmission characteristics of the optical fiber at various locations. For example, by detecting the phase of two optical fibers at the disturbance location at the excitation source terminal, it is further determined whether the two optical paths have the same path at the disturbance location.

[0076] In combination with the fourth aspect, in certain implementations of the fourth aspect, the first optical fiber sensing module and the second optical fiber sensing module are respectively deployed in the first network element and the second network element, and the first excitation source terminal is deployed at any position of the first optical path and / or the second optical path.

[0077] Exemplarily, the first excitation source terminal may be deployed in a pipe well, an optical cross-connect box, a fiber fusion box, an overhead pole, or the like of the optical path.

[0078] In combination with the fourth aspect, in certain implementations of the fourth aspect, the transceiver unit is also used for the first optical fiber sensing module and the second optical fiber sensing module to receive request messages from the same-route detection unit, and the request messages are used to request the first disturbance information and the second disturbance information respectively.

[0079] In a fifth aspect, a same-route detection device is provided, including a processor and, optionally, a memory, wherein the processor is used to control a transceiver to transmit and receive signals, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the same-route detection unit executes the method in the above-mentioned first aspect or any possible implementation of the first aspect.

[0080] Optionally, there are one or more processors and one or more memories.

[0081] Optionally, the memory may be integrated with the processor, or the memory may be provided separately from the processor.

[0082] Optionally, the same-route detection device further includes a transceiver, which may specifically be a transmitter (transmitter) and a receiver (receiver).

[0083] In the sixth aspect, a same-route detection device is provided, including a processor and, optionally, a memory, wherein the processor is used to control the transceiver to send and receive signals, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the optical fiber sensing module executes the method in the above-mentioned second aspect or any possible implementation of the second aspect.

[0084] Optionally, there are one or more processors and one or more memories.

[0085] Optionally, the memory may be integrated with the processor, or the memory may be provided separately from the processor.

[0086] Optionally, the same-route detection device further includes a transceiver, which may specifically be a transmitter (transmitter) and a receiver (receiver).

[0087] In the seventh aspect, a same-route detection system is provided, comprising: a same-route detection unit for executing the method in the above-mentioned first aspect or any possible implementation of the first aspect; and a plurality of optical fiber sensing modules for executing the method in the above-mentioned second aspect or any possible implementation of the second aspect.

[0088] In an eighth aspect, a computer-readable storage medium is provided, which stores a computer program or code. When the computer program or code runs on a computer, it enables the computer to execute the method in the above-mentioned first aspect or any possible implementation of the first aspect, or enables the computer to execute the method in the above-mentioned second aspect or any possible implementation of the second aspect.

[0089] In the ninth aspect, a chip is provided, comprising at least one processor, the at least one processor being coupled to a memory, the memory being used to store a computer program, the processor being used to call and run the computer program from the memory, so that a co-routing detection unit equipped with the chip executes the method in the above-mentioned first aspect or any possible implementation of the first aspect, or an optical fiber sensing module equipped with the chip executes the method in the above-mentioned second aspect or any possible implementation of the second aspect.

[0090] The chip may include an input circuit or interface for sending information or data, and an output circuit or interface for receiving information or data.

[0091] In the tenth aspect, a computer program product is provided, which includes a computer program code. When the computer program code is executed by a routing detection unit, the routing detection unit executes the method in the above-mentioned first aspect or any possible implementation of the first aspect; or, when the computer program code is executed by an optical fiber sensing module, the optical fiber sensing module executes the method in the above-mentioned second aspect or any possible implementation of the second aspect.

[0092] According to the solution of the embodiment of the present application, a method and device for same-route detection are provided. After the excitation source terminal turns on the excitation source disturbance, by receiving disturbance information from different optical paths, it is possible to quickly and accurately identify whether the disturbance position is the same-route position of different optical paths. BRIEF DESCRIPTION OF THE DRAWINGS

[0093] Figure 1 This is a schematic diagram of an example of a communication system applicable to the present application.

[0094] Figure 2 FIG. 1 is a schematic diagram of an example of a cross section of an optical cable applicable to the present application.

[0095] Figure 3 FIG. 1 is a schematic diagram of an example of an optical fiber applicable to the present application.

[0096] Figure 4 This is a schematic diagram of an example of a primary-backup path protection solution applicable to the present application.

[0097] Figure 5 This is a schematic diagram of an example of primary and backup paths with the same routing applicable to this application.

[0098] Figure 6 This is a schematic diagram of an example of a fiber optic shared cable segment applicable to the present application.

[0099] Figure 7 This is a schematic diagram of an example of a same-route detection system device applicable to the present application.

[0100] Figure 8 This is a schematic diagram of an example of a same-route detection method applicable to the present application.

[0101] Figure 9 This is a schematic diagram of an example of a single-point vibration routing detection system based on mechanical waves applicable to the present application.

[0102] Figure 10 This is a schematic diagram of an example of a same-route detection method applicable to the present application.

[0103] Figure 11 This is a schematic diagram of an example of vibration coding of the excitation source terminal applicable to this application.

[0104] Figure 12 This is another schematic diagram of the excitation source terminal vibration encoding applicable to this application.

[0105] Figure 13 This is a schematic diagram of an example of a single-point vibration routing detection system based on mechanical waves applicable to the present application.

[0106] Figure 14 This is another schematic diagram of the same-route detection method applicable to the present application.

[0107] Figure 15 This is a schematic diagram of an example of a network-wide automatic same-route detection system applicable to the present application.

[0108] Figure 16 This is another schematic diagram of the same-route detection method applicable to the present application.

[0109] Figure 17 This is a schematic diagram of an example of co-routing detection in a fiber cut / cutover scenario applicable to the present application.

[0110] Figure 18 This is another schematic diagram of the same-route detection method applicable to the present application.

[0111] Figure 19 This is a schematic diagram of an example of a same-route detection device applicable to the present application.

[0112] Figure 20 This is another schematic diagram of a same-route detection device applicable to the present application. DETAILED DESCRIPTION

[0113] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

[0114] As an important communications medium, optical fiber is widely used in high-speed, high-capacity, and low-latency communication systems. However, optical fiber itself is relatively thin and easily broken, making it impractical for direct device connection. Optical fiber cables consist of a number of optical fibers arranged in a specific pattern. Their basic structure includes the core, reinforcing steel wires, filler, and protective sheath. Optical fiber cables provide strong protection for the optical fibers, making fiber-optic connectivity solutions feasible.

[0115] Fiber-optic communication uses light waves as carriers and optical fibers as transmission media. Physically, optical fibers can be divided into two parts: near-end fiber and far-end fiber. The fiber between the wavelength combiner / demultiplexer and the optical distribution frame (ODF) is considered the intra-site structure, while the fiber used to connect optical components within the site is considered the near-end fiber. The fiber between the ODF and the transmission / receiving end is considered the extra-site structure, while the fiber used to transmit signals outside the site is considered the far-end fiber.

[0116] The embodiments of the present application can be applied to an optical communication system to detect whether multiple optical fibers have the same route. The optical communication network includes, but is not limited to, any one or more combinations of an optical transport network (OTN), an optical access network (OAN), a synchronous digital hierarchy (SDH), a passive optical network (PON), Ethernet, or a flexible Ethernet (FlexE), a wavelength division multiplexing (WDM) network, etc.

[0117] The following combination Figure 1 The optical communication network shown in FIG is used to exemplify the communication system to which the method for detecting the same route provided in this application is applied. The optical communication network may include multiple network elements and a controller. The multiple network elements are as follows: Figure 1 The sending device A, sending device B, receiving device C and receiving device D shown in FIG. Of course, the four network elements here are only exemplary, and the actual application scenario may include more or fewer devices, and this application does not limit this.

[0118] The sending device A and the receiving device C are connected via optical fiber, and the sending device B and the receiving device D are also connected via optical fiber. The optical fiber is used to transmit data between the devices.

[0119] The controller connects to receiving devices in the optical communication network to obtain specific information about the optical signals received by the receiving devices, such as frequency or phase. For example, when receiving devices C and D receive optical signals from transmitting devices A and B, they detect the received optical signals, obtain information such as the frequency or phase of the optical signals, and send this information to the controller. Based on the specific information collected by the receiving devices, the controller determines whether two optical fibers share the same route.

[0120] Of course, the controller can also be connected to a sending device in an optical communication network. In the following embodiments of this application, the connection between the controller and the receiving device is used as an example for illustrative description, and the connection between the controller and the sending device is not limited. In addition, the network element in the optical communication network can have the functions of sending and receiving optical signals at the same time. Therefore, the sending device in the embodiment of this application refers to the network element that sends optical signals, and the receiving device refers to the network element that receives optical signals. In actual application scenarios, the sending device may also have the function of receiving optical signals, and the receiving device may also have the function of sending optical signals.

[0121] The method for same-route detection provided in the present application can be executed by a controller, such as a software defined network (SDN) controller or a path computation element (PCE), or can be executed by a network element in an optical communication network, and can be adjusted according to the actual application scenario.

[0122] To facilitate understanding of the embodiments of the present application, several terms involved in the present application are first briefly explained.

[0123] 1. Fiber optic: Fiber optic is a fiber made of glass or plastic that can be used as a light transmission tool to transmit data between devices.

[0124] 2. Optical cable. This type of communication cable transmits optical signals through its internal fiber core, enabling high-capacity information communication. Generally, as distance increases, the size and weight of the optical cable also increase. Therefore, a single optical cable cannot transmit data between devices at long distances, requiring multiple cable segments to be spliced ​​together. Furthermore, an optical cable segment may include one or more optical fibers, each of which is wrapped in a protective sheath, etc.

[0125] For example, Figure 2 FIG. 1 is a schematic diagram of a cross section of an optical cable, wherein the optical cable includes a protective sleeve 21, and four optical fibers 22 are wrapped inside the protective sleeve 21, namely Figure 2 Fiber 1, fiber 2, fiber 3, and fiber 4. In addition, other components are provided in the optical cable, such as fillers and power cords. This application only describes the structural relationship between the optical cable and the optical fibers, and does not limit the other components included in the optical cable.

[0126] 3. Cable segment: The section between adjacent junctions or joints in the cable is the unit of use of the cable.

[0127] 4. Optical transmission section trail (OTS): This refers to the path between two adjacent sites, starting and ending with the FIU boards at both ends.

[0128] 5. Optical path: A series of fiber cores connected end to end, which is the physical route of the optical transmission path (OTS).

[0129] 6. Fiber interface unit (FIU): Refers to the optical interface unit at a wavelength division multiplexing (WDM) site.

[0130] 7. Same cable: Any two optical paths pass through the same optical cable segment.

[0131] 8. Optical Fiber Distribution Frame (ODF): Used for terminating and distributing trunk optical cables at the central office in optical fiber communication systems, it facilitates the connection, distribution, and scheduling of optical fiber lines.

[0132] 9. Optical cross-connect box. Also known as optical cable junction box, it is a passive device used to divide a large number of optical cables into several small number of optical cables in different directions through the optical cable junction box.

[0133] 10. Splice box. Also known as a splice box, it is used to connect multiple sections of optical cable together.

[0134] As the distance between devices increases, the size and weight of optical cables also increase. Therefore, a single optical cable cannot transmit data between devices at a distance, requiring multiple cable segments to be spliced ​​together. Because a single optical cable segment is limited in length, multiple segments can be connected using optical fiber distribution boxes (ODFs), optical cross-connect boxes, or junction boxes. This can also be understood as dividing an optical cable into multiple segments.

[0135] Figure 3 FIG. 1 is a schematic diagram of an example of an optical fiber applicable to the present application. Figure 3 As shown, ODF 1, the splice closure, the optical cross-connect box, and ODF 2 divide the optical fiber between the transmitting and receiving devices into multiple segments. Each segment of optical fiber is located in or wrapped in a different optical cable segment. For example, the optical fiber between ODF 1 and the splice closure is located in or wrapped in optical cable segment 1, the optical fiber between the splice closure and the optical cross-connect box is located in or wrapped in optical cable segment 2, and the optical fiber between the optical cross-connect box and ODF 2 is located in or wrapped in optical cable segment 3. An optical cable segment can be understood as a continuous section of optical cable between two connection points, without any splices or connection points.

[0136] Optionally, in this application, an excitation source terminal can be set in the optical cable segment that needs to be tested for the same route, so as to generate vibration and drive the optical fiber to vibrate. Figure 3 The excitation source terminal can be set at any location in a pipe well without a fiber optic box, a joint box, an optical cross-connect box, a machine room or an optical cable segment, so that the excitation source terminal vibrates. By detecting the disturbance information, it can be determined whether different optical fibers have the same route at the disturbance location.

[0137] Optical fiber, with its high capacity and low latency, has become the primary communications medium in recent years, earning it the nickname "the information superhighway." Countries, operators, and businesses have invested heavily in building optical cable networks, resulting in explosive growth in fiber optic cable coverage. However, the physical characteristics of optical fiber, such as its fragility, fragility, sensitivity to fire, and stress, make fiber failures a major network risk. To ensure high reliability in optical communication systems, primary and backup path protection schemes are often employed, employing multiple optical paths connecting two devices.

[0138] Figure 4 This is a schematic diagram of an example of a primary and backup path protection solution applicable to this application. Figure 4 As shown, there are two optical paths connecting device A and device B: a primary path and a backup path. That is, devices A and B can communicate over the primary path and the backup path, respectively. If the primary path fails, services can be switched to the backup path. This implementation ensures communication reliability and prevents data transmission interruptions between devices caused by fiber failures.

[0139] It's important to note that when two service paths share the same optical cable, trench (underground), overhead trench, or optical cross-connect box, they are considered co-routed. As the number of optical cables multiplies, the optical cable network becomes increasingly complex. Furthermore, frequent changes such as cutting, splicing, re-laying, and rerouting make real-time and accurate management of the optical cable network challenging. When the Geographic Information System (GIS) information maintained by the management interface is inconsistent with the actual physical GIS, the planned primary and backup paths may share the same route.

[0140] However, as distance increases, the size and weight of optical cables also increase. For long-distance transmission between devices, the connecting cable must be composed of multiple segments. Furthermore, a single segment of optical cable may contain multiple optical fibers, and different fibers may transmit to different devices. This means that different fibers go in different directions, necessitating the splitting of the fibers within the cable.

[0141] The optical fiber connecting two sites is called a communication path, and two communication paths may share the same cable segment. For example, if communication path 1 consists of cable segment 1 and cable segment 2, and communication path 2 consists of cable segment 2 and cable segment 3, then cable segment 2 is the common cable segment for both communication paths 1 and 2. The shared cable segment is hereinafter referred to as the co-cable segment. Furthermore, if the co-cable segment of communication paths 1 and 2 experiences a fault, such as a cut, bend, or compression, communication quality on both paths 1 and 2 may deteriorate or even be interrupted.

[0142] Figure 5 This is a schematic diagram of an example of a primary and backup path with the same routing that applies to this application. Figure 5 As shown in the figure, there are two optical paths between device A and device B: the primary path and the backup path. The optical cables 1 and 2 corresponding to the two paths are routed in the same trench (buried underground), forming the same route between the primary and backup paths.

[0143] It should be understood that two co-routed paths are typically physically close together. When one path fails, the other path often also fails. For example, two optical cables in the same trench might be severed by an excavator. It should be noted that when the primary and backup paths share a co-routed section, there is a high risk of simultaneous interruption. If this risk occurs, the protection provided by the primary and backup paths will completely fail, compromising service reliability and availability. Therefore, to mitigate this risk, a method for identifying whether two optical paths share a co-routed section that can quickly adapt to dynamic network changes is urgently needed.

[0144] Currently, manufacturers cannot build their own optical cables and primarily rely on leasing cables from operators. Optical cable resources are one of operators' most critical infrastructure resources. These resources include optical distribution frames (ODFs), optical cables, optical cross-connects, ducts, and poles, all of which require manual collection, entry, and verification.

[0145] Because operators have a large and constantly changing fiber optic cable fleet (e.g., new construction, cutovers, and demolition), manual management is inefficient. When leasing fiber, manual inspection to ensure the same cables and routes are maintained is inefficient and time-consuming. Maintaining highly accurate and comprehensive fiber optic cable information is labor-intensive and difficult. Furthermore, obtaining comprehensive, real-time, and accurate fiber optic cable information is difficult, if not impossible.

[0146] Figure 6 This is a schematic diagram of an example of same-route detection applicable to this application. Figure 6As shown in (a), this application scenario may include at least two optical communication devices, for example, a transmitting device A, a transmitting device B, a receiving device C, and a receiving device D. Devices A and C, as well as devices B and D, are connected via optical fibers. An optical path AC is formed between devices A and C, and an optical path BD is formed between devices B and D. Two adjacent sections of optical cable are usually connected using a mechanical connector or fiber fusion. The optical cable routes traversed by optical path AC and optical path BD share the same cable (for example, optical cable segment 3), the same optical cross-connect box, and the same junction box.

[0147] The optical fiber connecting transmitting device A and receiving device C can be located in or enclosed within optical cable segments 1, 3, and 4. The optical fiber connecting transmitting device B and receiving device D can be located in or enclosed within optical cable segments 2, 3, and 5. Therefore, optical cable segment 3 is a common optical cable segment for the optical fibers connecting transmitting device A and receiving device C and the optical fibers connecting transmitting device B and receiving device D.

[0148] like Figure 6 As shown in (b), the application scenario may include a sending device A, a receiving device C, and a receiving device D, etc. The optical fiber connected between the sending device A and the receiving device C may be located in or wrapped in the optical cable segment 3 and the optical cable segment 4, and the optical fiber connected between the sending device A and the receiving device D may be located in or wrapped in the optical cable segment 3 and the optical cable segment 5. Therefore, the optical cable segment 3 is a common optical cable segment for the optical fiber connected between the sending device A and the receiving device C and the optical fiber connected between the sending device A and the receiving device D.

[0149] Although optical cables protect optical fibers, if a cable fails (e.g., due to being cut, bent, or squeezed), all optical paths passing through the cable will fail, causing communication quality to deteriorate or even be interrupted. Therefore, to improve communication reliability, primary-backup protection is often used. This means that multiple optical fibers are connected between two devices. When the primary path fails, service data can be switched to the backup path for transmission.

[0150] like Figure 6As shown in (c), there are paths 1 and 2 composed of optical fibers between the sending device and the receiving device. There is a co-cable segment in path 1 and path 2. If the co-cable segment fails, such as being dug, bent, or squeezed, the transmission of path 1 and path 2 will be interrupted, affecting the data transmission between the sending device and the receiving device, or even making it impossible to transmit data. Therefore, in order to avoid the risk of the main and backup paths being co-cabled, it is necessary to identify the co-cable segment quickly, accurately, and adapt to dynamic changes in the network. However, if the device information along the optical cable is recorded manually, it will consume a large manpower cost, and when certain devices or optical cables in the optical cable are changed or updated, manual maintenance is required. It may be impossible for the updated devices or optical cables to be recorded manually in time, resulting in the inability to record the shared optical cable segment between the two optical fibers in time, affecting the data transmission between the devices.

[0151] However, when the primary and backup paths are routed together, if the shared optical cable segment fails, such as being cut, bent, or squeezed, data cannot be transmitted between the two devices, the primary and backup protections fail, and the primary and backup paths cannot play a protective role.

[0152] It should be understood that an optical fiber can pass through one or more sections of optical cable. If two optical fibers pass through the same section or sections of optical cable, an optical time domain reflectometer (OTDR) can be used to detect whether the cable characteristics of the two optical fibers are similar, thereby determining the probability that the two optical fibers are in the same cable.

[0153] However, this implementation method can only detect whether two optical fibers are in the same cable, but cannot detect scenarios such as being in the same trench / pole or route, which has certain limitations.

[0154] Currently, a fiber optic cable patrol method is available that combines manual labor with auxiliary cable patrol tools. A line patrol analyzer is connected to the patrol fiber, and an optical fiber distribution frame (ODF) is connected to pipe wells 1, 2, ..., and n via optical fibers. A mobile terminal displays the echo signal from the patrol analyzer.

[0155] In this implementation, the optical cable is manually tapped along the route to restore the cable route and establish a cable route database. Since optical fiber sensing is very sensitive to vibration, when a hammer hits the manhole cover (for example, pipe well 1, pipe well 2, ..., pipe well n), a knocking signal can be seen in the optical fiber sensor echo signal. By repeatedly tapping at the cable patrol point and observing the echo signal of the cable patrol analyzer displayed on the mobile terminal, it is determined whether the signal displayed by the mobile terminal is the knocking signal at the cable patrol point. If the mobile terminal confirms that a knocking signal appears at the cable patrol point, it is marked that the optical cable has passed through the cable patrol point. If no signal appears on the mobile terminal, it is impossible to determine whether the optical cable has passed through the cable patrol point.

[0156] However, given the numerous disturbances similar to tapping in nature, the tapping method is susceptible to interference and false detection. Furthermore, this tapping method requires the operator to have extensive identification experience, making it difficult to operate. The need for on-site manual intervention leads to low cable patrol efficiency and high labor costs. Furthermore, after optical cable changes, manual intervention is still required, leading to update delays and the possibility of missed updates and slow data updates. In short, the overall solution is inaccurate and inefficient. Finally, manual tapping for same-route detection requires simultaneous detection at two sites and the tapping of the same route point, making the current solution almost unfeasible.

[0157] In summary, route separation is a key dynamic factor affecting optical communication reliability and is therefore highly valued. Implementing route separation is a prerequisite for primary and backup path protection to enhance reliability. However, since optical cable GIS information is primarily collected, entered, and verified manually, this is inefficient and leads to high maintenance costs. Furthermore, untimely optical cable updates (e.g., new construction, splicing, and removal) cannot guarantee real-time, dynamic service adjustments, making it prone to numerous single-point failures within the same cable, resulting in significant losses.

[0158] In light of this, this application provides an accurate, rapid, and adaptable co-route detection method that can adapt to dynamic network changes. A coded scrambling terminal is configured in the co-route detection system, enabling all optical fibers in the same route to sense the disturbance signal. The system then uses fiber optic sensing to receive the fiber optic sensing signal and analyze whether the fiber contains the specific disturbance signal to perform co-route detection.

[0159] To facilitate understanding of the embodiments of the present application, the following points are explained:

[0160] In this application, "at least one" means one or more. "And / or" describes the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A and B can be singular or plural. In the text description of this application, the character " / " generally indicates that the associated objects are in an "or" relationship.

[0161] It is understood that the various numerical numbers involved in the embodiments of this application are only for the convenience of description and are not intended to limit the scope of the embodiments of this application. The order of the sequence numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0162] In the embodiments of the present application, “first”, “second” and various numerical numbers are used to distinguish for the convenience of description and are not used to limit the scope of the embodiments of the present application. For example, different indication information is distinguished.

[0163] In this application, "used to indicate" can include being used for direct indication and being used for indirect indication. When describing that a certain indication information is used to indicate A, it can include that the indication information directly indicates A or indirectly indicates A, and it does not mean that the indication information must carry A.

[0164] In addition, the specific indication method can also be various existing indication methods, such as but not limited to the above-mentioned indication methods and various combinations thereof. The specific details of the various indication methods can be referred to the prior art and will not be repeated herein. As can be seen from the above, for example, when it is necessary to indicate multiple information of the same type, there may be a situation where the indication methods for different information are different. In the specific implementation process, the required indication method can be selected according to specific needs. The embodiment of the present application does not limit the selected indication method. In this way, the indication method involved in the embodiment of the present application should be understood to cover various methods that can enable the party to be indicated to obtain the information to be indicated.

[0165] In the embodiments of the present application, descriptions such as "when...", "under...", and "if" all mean that the device will perform corresponding processing under certain objective circumstances. They do not limit the time, nor do they require the device to perform judgment actions when implemented, nor do they mean that there are other limitations.

[0166] The method provided in the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0167] Figure 7 This is a schematic diagram of an example of a same-route detection system device applicable to this application. Figure 7 As shown, the system device includes a fiber optic sensing module, a shared risk link group (SRLG) detection unit for the same route, and an excitation source terminal. Specifically, when a coded scrambling terminal is placed at a point on the same route (for example, a common optical cross-connect box, a fiber optic splice box, a same pole, etc.) or a segment on the same route (for example, the same trench or the same overhead segment), all optical fibers in the same route will sense the disturbance signal. At the same time, a fiber optic sensor is deployed at the network element to receive the fiber optic sensing signal, and the same route detection is performed by analyzing whether the optical fiber contains a specific disturbance signal. In addition, a same route SRLG detection unit is deployed on a certain node in the network (for example, a certain network element, a network cloud engine (NCE), a network management system, etc.) to implement the same route SRLG detection.

[0168] The fiber optic sensing module primarily consists of a detection module and a data analysis module. The detection module acquires disturbance echo signals from various points on the fiber. The data analysis module analyzes these signals to determine where disturbances are present. If disturbances are present, the disturbance echo signals are reported to the SRLG detection unit in the same route.

[0169] It should be noted that distributed fiber optic sensors enable continuous, distributed detection of vibration and acoustic fields. They utilize the highly sensitive strain-sensitive nature of coherent Rayleigh scattering stimulated by narrow-linewidth lasers in optical fibers. Combined with reflectometry, they enable long-distance, high-precision temporal and spatial sensing of ambient vibration and acoustic field information interacting with the optical fiber.

[0170] The same-route SRLG detection unit mainly includes a control or management module, a data management module, an SRLG detection module, an SRLG management module, etc. Among them, the control or management module is used to control or manage the optical fiber sensor and / or excitation source terminal, and is responsible for enabling, issuing configurations, and collecting data from the optical fiber sensor and / or excitation source terminal. The data management module is responsible for collecting data storage, etc. The SRLG detection module is used to match whether there are two disturbance echo signals that meet the similarity threshold based on the disturbance echo signal reported by the optical fiber sensor and the excitation disturbance information and time reported by the excitation source terminal. For example, based on the similarity between the disturbance echoes and the similarity between the disturbance echo and the excitation source disturbance information being greater than the preset threshold, the accuracy of the same-route SRLG detection is doubly guaranteed. The SRLG management module is used to manage the addition, failure, and change of SRLGs.

[0171] The excitation source terminal has the basic function of encoding disturbances and can also support functions such as reporting location GIS information, time information, and remote coding control. The excitation source can be mechanical waves or acoustic waves. Their characteristics or implementation methods include mechanical vibration waves and acoustic waves. The frequency range of mechanical vibration waves is generally less than 150Hz, and single-frequency time-domain coding can be used. The frequency range of acoustic waves is generally 20-20,000Hz, and multi-frequency combination coding can be used. For example, different music contains different sound spectra.

[0172] Figure 8 This is a schematic diagram of an example of a same-route detection method 800 provided in an embodiment of the present application. The method is applied to a same-route detection system. The same-route detection system includes multiple optical fiber sensing modules, at least one excitation source terminal, and a same-route detection unit. The multiple optical fiber sensing modules include a first optical fiber sensing module and a second optical fiber sensing module. The at least one excitation source terminal includes a first excitation source terminal. The specific implementation steps include:

[0173] S810: The first optical fiber sensing module and the second optical fiber sensing module obtain first disturbance information and second disturbance information. The first disturbance information and the second disturbance information are obtained after the first excitation source terminal starts excitation source disturbance. The first disturbance information corresponds to the first optical path, and the second disturbance information corresponds to the second optical path. The first disturbance information and the second disturbance information each include a disturbance echo signal.

[0174] It should be understood that in the above implementation, the first fiber optic sensing module and the second fiber optic sensing module are respectively deployed at the first network element and the second network element, that is, one network element corresponds to one fiber optic sensing module. Optionally, multiple fiber optic sensing modules (for example, the first fiber optic sensing module and the second fiber optic sensing module) can be deployed at one network element (for example, the first network element), and the network element can determine the corresponding disturbance information detected by different fiber optic sensing modules based on the port (for example, the fiber interface unit (FIU) port) identifier, etc. The technical solution of the present application does not specifically limit the number of network elements and the number of fiber optic sensing modules. The above is only an exemplary description and should not constitute any limitation on the technical solution of the present application.

[0175] It should also be understood that the multiple optical paths detected by the multiple optical fiber sensing modules deployed at the same network element can be the same route or different routes, and this application does not make specific limitations on this.

[0176] In the technical solution of this application, the acquisition of disturbance echo signals can be understood as: utilizing the operating principle of an optical time domain reflectometer (OTDR) to monitor and collect phase information generated by Rayleigh scattering in an optical fiber, thereby determining the transmission characteristics of the optical fiber at various locations. For example, by detecting the phase of two optical fibers at the disturbance location at the excitation source terminal, it is further determined whether the two optical paths have the same path at the disturbance location.

[0177] It should be noted that a phase OTDR system, as a distributed fiber optic sensing system, typically uses a narrow-linewidth pulsed laser as the sensing light source and can respond to phase modulation. A light pulse is injected into one end of the optical fiber, and a photodetector detects the backscattered Rayleigh light. The light injected into the fiber is strongly coherent, so the output of the sensing system is the result of coherent interference of the backscattered Rayleigh light. The phase OTDR determines the location of the disturbance by measuring the time delay between the injected pulse and the received signal. When a disturbance occurs in the optical fiber line, the refractive index and length of the fiber at that location change, resulting in a change in the phase of the light at that location. Because the scattered light at the disturbance location undergoes periodic phase changes as it travels to the detector, the resulting phase change, due to interference, results in a change in light intensity corresponding to the location of the disturbance. Phase OTDRs offer advantages such as high sensitivity, high positioning accuracy, and simple data processing.

[0178] As an example but not a limitation, the first excitation source terminal controls the excitation source disturbance by coding.

[0179] Exemplarily, a coding method is used to control whether the excitation source terminal is activated. For example, when the codeword is 0, it is used to indicate that the perturbation of the excitation source terminal is stopped. When the codeword is 1, it is used to indicate that the perturbation of the excitation source terminal is started. The above is merely an exemplary description and should not constitute any limitation on the technical solution of this application.

[0180] In the embodiment of the present application, the excitation source of the first excitation source terminal adopts mechanical waves or sound waves.

[0181] As an example but not a limitation, the disturbance code generation method of the first excitation source terminal includes: a mechanical wave coding method based on single-frequency time domain coding and / or an acoustic wave coding method based on multi-frequency combination coding.

[0182] Exemplarily, the fiber optic sensing module will give a vibration detection result in each detection cycle (for example, 0.5s) (detected vibration can be marked as 1, and no vibration is marked as 0). Since mechanical vibration start and stop have inertia, fast (within 0.5s) start and stop coding is not operational. The technical solution of the present application adopts multiple continuous fiber optic sensing detection cycles as a vibration code (vibration is 1, non-vibration is 0). Vibration coding can be used in two ways: first, the vibration (M detection cycles) / non-vibration coding (N detection cycles) time is not fixed, and different codes are generated by controlling the M / N ratio; second, the vibration (M detection cycles) / non-vibration coding (N detection cycles) time is fixed (M=N), and communication coding (for example, code division multiple access, CDMA) is used to generate different codes.

[0183] In the embodiment of the present application, the first optical fiber sensing module and the second optical fiber sensing module are respectively deployed in the first network element and the second network element, and the first excitation source terminal is deployed at any position of the first optical path and / or the second optical path.

[0184] Exemplarily, the first excitation source terminal may be deployed in a pipe well, an optical cross-connect box, a fiber fusion box, an overhead pole, or the like of the optical path.

[0185] Optionally, the same-route detection unit sends a request message to the first optical fiber sensing module and the second optical fiber sensing module.

[0186] Correspondingly, the first optical fiber sensing module and the second optical fiber sensing module receive request messages from the same-route detection unit, wherein the request messages are used to request to obtain the first disturbance information and the second disturbance information respectively.

[0187] S820: The first optical fiber sensing module and the second optical fiber sensing module respectively send first disturbance information and second disturbance information to the same-route detection unit.

[0188] Correspondingly, the same-route detection unit receives the first disturbance information and the second disturbance information from the first optical fiber sensing module and the second optical fiber sensing module respectively.

[0189] S830: The same-route detection unit determines, based on the first disturbance information and the second disturbance information, that the disturbance position of the first excitation source terminal is the same-route position of the first optical path and the second optical path.

[0190] As an example but not limitation, when the similarity between the disturbance echo signals of the first disturbance information and the second disturbance information is greater than a preset threshold, the same-route detection unit determines that the disturbance position of the first excitation source terminal is the same-route position of the first optical path and the second optical path.

[0191] Exemplarily, after the same route detection unit collects data for a period of time, it starts the same route detection. The specific same route detection method includes: recording the disturbance echo collected by the first network element as data1, and the disturbance echo collected by the second network element as data2, and the echo similarity is represented by r, that is:

[0192] r(data1, data2)=cov(data1, data2) / sqrt(var(data1)*var(data2))

[0193] Where r(a, b) represents the correlation coefficient between a and b, cov(a, b) represents the covariance between a and b, and var(a) represents the variance of a.

[0194] When r is greater than a preset threshold, such as 0.8, the disturbance position is considered to be a co-path position of the first light path and the second light path.

[0195] In one possible implementation, the same-route detection unit receives third disturbance information from the first excitation source terminal, and the third disturbance information includes at least one of the following information: the disturbance time when the first excitation source terminal starts the excitation source disturbance, the location of the first excitation source terminal, and the disturbance code of the first excitation source terminal; the same-route detection unit determines that the disturbance position of the first excitation source terminal is the same-route position of the first optical path and the second optical path based on the first disturbance information, the second disturbance information and the third disturbance information.

[0196] It should be noted that the same-route detection unit can determine whether the first and second optical paths have the same route at the disturbance location of the excitation source terminal based on the first, second, and third disturbance information. This implementation method can further improve the accuracy. Ideally, the third disturbance information reported by the excitation source terminal should be identical in disturbance time and location to the first and second disturbance information.

[0197] It should be understood that the first disturbance information and the second disturbance information are monitored and reported by the first and second optical fiber sensing modules, respectively, while the third disturbance information is directly reported by the excitation source terminal. Furthermore, the same-route detection unit can determine the first disturbance code and the second disturbance code corresponding to the first and second optical paths, respectively, based on the first disturbance information and / or the second disturbance information, and the third disturbance code can be directly obtained from the third disturbance information.

[0198] In other words, the first disturbance information, the second disturbance information, and the third disturbance information have different reporting objects, different sources, and different specific reporting forms.

[0199] Furthermore, in this implementation, the same-route detection unit determines the first disturbance code based on the first disturbance information, and / or determines the second disturbance code based on the second disturbance information; when the similarity between at least one of the first disturbance code and the second disturbance code and the disturbance code of the first excitation source terminal is greater than a preset threshold, the same-route detection unit determines that the disturbance position of the first excitation source terminal is the same-route position of the first optical path and the second optical path.

[0200] Exemplarily, after the same-route detection unit collects data for a period of time, it starts the same-route detection. The specific same-route detection method includes: recording the disturbance extracted by the first network element as code1, the disturbance extracted by the second network element as code2, and the disturbance reported by the stimulus source terminal as code0, and the coding similarity is expressed by Levenshtein distance, that is:

[0201] levab(code1, code2)=1-ch<code1,code2> / max(len_code1, len_code2)

[0202] levab(code1, code0)=1-ch<code1,code0> / max(len_code1, len_code0)

[0203] levab(code0, code2)=1-ch<code0,code2> / max(len_code0, len_code2)

[0204] Where levab(a, b) represents the Levenshtein distance between encoding a and b, ch<a,b> It represents the minimum number of operations required to convert code a into b, and len_a represents the length of code a.

[0205] When the three sets of levabs are all greater than a preset threshold, such as 0.8, the disturbance position is considered to be a co-path position of the first light path and the second light path.

[0206] Exemplarily, the same route detection unit is based on the coding similarity between the first perturbation code code1 and the second perturbation code code2 levab (code1, code2) = 1-ch<code1,code2> / max(len_code1, len_code2) is greater than a preset threshold, it can be determined that the disturbance position of the excitation source terminal is the co-path position of the first optical path and the second optical path.

[0207] In this implementation, coding-based detection can effectively resist environmental interference and improve the efficiency and accuracy of same-route detection.

[0208] It should be noted that the above method of judging whether multiple optical paths have the same route at the disturbance position of the excitation source terminal based on the disturbance code and / or disturbance echo can be used independently or in combination, and the technical solution of this application does not make specific limitations on this.

[0209] It should be noted that the technical solution of this application is also applicable to identifying and detecting co-route segments between multiple lightpaths. For example, if there is another disturbance location, the co-route detection unit, based on the above implementation, determines that this other disturbance location is also a co-route location between the first and second lightpaths. Therefore, the geographical segment formed by these two disturbance locations can be considered to be the co-route segment between the first and second lightpaths.

[0210] In another possible implementation manner, the at least one excitation source terminal includes a second excitation source terminal.

[0211] First, the first optical fiber sensing module and the second optical fiber sensing module send the third disturbance information and the fourth disturbance information to the same-route detection unit respectively. Correspondingly, the same-route detection unit receives the third disturbance information and the fourth disturbance information from the first optical fiber sensing module and the second optical fiber sensing module respectively.

[0212] Among them, the third disturbance information and the fourth disturbance information are obtained after the second excitation source terminal turns on the excitation source disturbance, the third disturbance information corresponds to the first optical path, the fourth disturbance information corresponds to the second optical path, and the third disturbance information and the fourth disturbance information include the disturbance time and the disturbance echo signal.

[0213] Secondly, the same route detection unit generates first optical fiber geographic information system (GIS) information according to the first disturbance information and the third disturbance information, and generates second optical fiber geographic information system (GIS) information according to the second disturbance information and the fourth disturbance information;

[0214] Finally, the co-route detection unit determines that the disturbance position of the first excitation source terminal and / or the disturbance position of the second excitation source terminal are the co-route positions of the first optical path and the second optical path based on the similar points in the matching space of the first optical fiber GIS information and the second optical fiber GIS information.

[0215] The fiber optic geographic information system (GIS) information can be understood as the actual geographic location of the fiber, for example, the longitude and latitude of the fiber.

[0216] In this implementation, by determining multiple excitation source terminals deployed on multiple optical paths and detecting whether multiple optical paths have the same route at multiple disturbance locations, automatic identification of the same route in the entire network is achieved, supporting simultaneous detection of multiple points and doubling the efficiency.

[0217] In another implementation, the same-route detection unit receives at least one disturbance information from the first optical fiber sensing module, and the at least one disturbance information corresponds one-to-one to at least one excitation source terminal within a first range. The first range is a range with a radius R and the first excitation source terminal closest to the target fiber break point as the center. The target fiber break point is the fiber break position detected by the first optical fiber sensing module in the first optical path; the same-route detection unit determines at least one second excitation source terminal as the next hop from the first excitation source terminal based on the at least one disturbance information within the first range. The at least one second excitation source terminal is an excitation source terminal on the first optical path.

[0218] Furthermore, the same-route detection unit receives at least one disturbance information from the first optical fiber sensing module, and the at least one disturbance information corresponds one-to-one to at least one excitation source terminal within the i-th range, the i-th range is a range with the i-th excitation source terminal as the center and a radius of R, the i-th excitation source terminal is the excitation source terminal of the next hop of the i-1-th excitation source terminal on the first optical path, and i is an integer greater than or equal to 2; the same-route detection unit determines at least one i+1-th excitation source terminal of the next hop from the i-th excitation source terminal based on the at least one disturbance information within the i-th range, the at least one i+1-th excitation source terminal is the excitation source terminal closest to the third network element on the first optical path, the third network element and the first network element are the starting position and the ending position of the first optical path, and the first optical fiber sensing module is deployed in the first network element; the same-route detection unit updates the same-route of the first optical path based on the i+1 excitation source terminals.

[0219] In this implementation, a method for detecting and updating the same route in a fiber cut or cutover scenario is provided.

[0220] Exemplarily, a first optical path is formed between network element A and network element B. When an optical fiber is interrupted, the pipe well or optical cross box closest to the fiber break point can be detected as point a based on the location. Then, the excitation source terminal disturbance is started within a range with point a as the center and R as the radius. The optical fiber sensing module at network element A can monitor and collect one or more disturbance information, and can determine that the one or more excitation source terminals corresponding to the one or more disturbance information are deployed on the first optical path. Then, all excitation source terminals within a range with R as the radius and the one or more excitation source terminals as the center are started again. Correspondingly, the optical fiber sensing module at network element A continues to monitor and collect one or more disturbance information. The disturbance information is monitored and collected in sequence until the latest route of the first optical path between network element A and network element B is formed.

[0221] In summary, the present invention provides a co-routing detection and identification device. After a first excitation source terminal initiates excitation source perturbation, the device receives perturbation information from different optical paths and determines that the perturbation location is the co-routing location of the first and second optical paths. This method can adapt to dynamic network changes and accurately and rapidly detect co-routing of multiple optical paths.

[0222] Figure 9 FIG. 1 is a schematic diagram of an example of a single-point vibration and routing SRLG detection system based on mechanical waves applicable to the present application. Figure 9 As shown, the system device includes an optical fiber sensing module, a co-routed SRLG detection unit and a mechanical vibration excitation source terminal.

[0223] For example, an optical path is formed between network element A1 and network element B1, and between network element A2 and network element B2, respectively. The optical cable routes passed by the two optical paths have the same routing point or the same routing segment. A coded mechanical vibration excitation source terminal is placed at the same routing point or the same routing segment, and all optical fibers in the same routing will sense the disturbance signal of the mechanical vibration excitation source terminal. At the same time, optical fiber sensors are respectively deployed at network elements A1, A2, B1 and B2 to receive optical fiber sensing signals, which are used to analyze whether specific disturbance signals are contained in the optical fiber, and then perform same routing detection. In addition, a same routing SRLG detection unit is deployed at a certain node in the network to implement same routing SRLG detection.

[0224] Among them, the same-route SRLG detection unit performs same-route detection of the two optical paths by receiving the first information reported by the mechanical wave vibration excitation source terminal, namely the disturbance position GIS, disturbance feature information, disturbance code #0, disturbance time and other information, and the second information reported by the optical fiber sensing module, namely the disturbance code #1, disturbance time, disturbance distance and other perceived disturbance feature information.

[0225] Figure 10 FIG. 1 is a schematic diagram of an example of a same-route detection method 1000 applicable to the present application. Figure 10 As shown, the excitation source uses mechanical waves, and the specific implementation steps include:

[0226] S1010: The excitation source terminal sends first information to the same-route SRLG detection unit.

[0227] Correspondingly, the SRLG detection unit receives the first information from the excitation source terminal via the same route.

[0228] The first information includes at least one of the following information: the excitation source terminal disturbance position GIS, the disturbance time, the disturbance code #0 and other information.

[0229] For example, the cable patrol personnel arrive at the planned detection point and start the mechanical vibration excitation source terminal to disturb the cable. Then, the excitation source terminal reports the first information to the same-route SRLG detection unit for determining the accuracy of the same-route SRLG detection in the subsequent step S1050.

[0230] In the embodiment of the present application, the same-route SRLG detection unit includes a network management, an NCE, and the like.

[0231] It should be noted that the fiber optic sensing module will give a vibration detection result for each detection cycle (for example, 0.5s) (for example, vibration detected can be marked as 1, and no vibration detected can be marked as 0). Since mechanical vibration start and stop have inertia, fast (within 0.5s) start and stop coding is not operational. Therefore, the embodiment of the present application uses multiple consecutive fiber optic sensing detection cycles as a disturbance code (for example, disturbance is 1, non-disturbance is 0). The disturbance code #0 of the specific mechanical vibration excitation source terminal can be used in the following two ways:

[0232] Method 1: The duration of the perturbation coding (M detection cycles) / non-perturbation coding (N detection cycles) is not fixed, and different codes are generated by controlling the M / N ratio. Here, M and N are different positive integers.

[0233] Figure 11 This is a schematic diagram of an example of vibration coding of the excitation source terminal applicable to this application. Figure 11 As shown in (a), the disturbance code #0 of the excitation source terminal is: 10. Among them, 1 represents disturbance, 0 represents non-disturbance, and the corresponding disturbance code sequence is [11111, 00000, 11111, ...]. That is, in this implementation, the duty cycle of the disturbance code and the non-disturbance code is 50%. Figure 11 As shown in (b), the perturbation code #0 of the excitation source terminal is 10. Here, 1 represents perturbation and 0 represents non-perturbation. The corresponding perturbation code sequence is [11111111, 00, 1111111, …]. That is, in this implementation, the duty cycle of the perturbation code and the non-perturbation code is 70%.

[0234] Method 2: The time of scrambling coding (M detection cycles) / non-scrambling coding (N detection cycles) is fixed, and different codes are generated using communication coding (e.g., code division multiple access CDMA), where M and N are the same positive integers.

[0235] Figure 12 This is another example of the vibration coding of the excitation source terminal applicable to this application. Figure 12 As shown in (a), the disturbance code #0 of the excitation source terminal is: 11001. Among them, 1 represents disturbance and 0 represents non-disturbance. The corresponding disturbance code sequence is [11111, 11111, 00000, 00000, 11111]. Figure 12 As shown in (b), the perturbation code #0 of the excitation source terminal is: 10110. Among them, 1 represents perturbation and 0 represents non-perturbation. The corresponding perturbation code sequence is [11111, 00000, 1111, 11111, 00000].

[0236] It should be noted that the two perturbation coding #0 methods provided above are merely exemplary descriptions and should not constitute any limitation to the technical solution of this application.

[0237] S1020: The same-route SRLG detection unit sends a request message to the optical fiber sensing module (eg, the first optical fiber sensing module and the second optical fiber sensing module).

[0238] Correspondingly, the optical fiber sensing module receives the request message from the SRLG detection unit on the same route.

[0239] The request message is used to request to obtain the second information (ie, the first disturbance information and the second disturbance information). For example, the second message includes the disturbance echo signal #0 and the disturbance time.

[0240] Specifically, the first disturbance information is a disturbance echo signal generated by the first optical path when the excitation source is disturbed, and the second disturbance information is a disturbance echo signal generated by the second optical path when the excitation source is disturbed.

[0241] Exemplarily, after receiving the excitation source terminal disturbance information, the same-route SRLG detection unit sends a data collection request message to all optical fiber sensor modules within its management area.

[0242] S1030, the optical fiber sensing module collects the disturbance echo signal #0 according to the request message.

[0243] Exemplarily, after receiving the data collection request message, each optical fiber sensing module starts collecting data (eg, disturbance echo signals at each point of the optical fiber).

[0244] S1040: The optical fiber sensing module sends second information to the SRLG detection unit on the same route.

[0245] Correspondingly, the SRLG detection unit receives the second information from the optical fiber sensing module via the same route.

[0246] Exemplarily, after collecting the disturbance echo signal of the optical fiber, the optical fiber sensing module reports the disturbance time, disturbance distance, disturbance echo signal #0 and other information of the disturbance position of the optical fiber to the SRLG detection unit on the same route.

[0247] S1050: The same-route SRLG detection unit determines, based on the first information and the second information, that the disturbance position is a same-route position of the first optical path and the second optical path.

[0248] Exemplarily, after collecting data for a period of time (e.g., the second information), the same-route SRLG detection unit initiates the same-route SRLG detection. Based on the code similarity matching algorithm, the same-route detection unit can determine the first disturbance code and / or the second disturbance code according to the first disturbance information and / or the second disturbance information, and then determine whether the first disturbance code and / or the second disturbance code have the same route at the disturbance position by judging whether the similarity between them is greater than a preset threshold, or by judging whether the similarity between the first disturbance code and / or the second disturbance code and the disturbance code #0 reported by the excitation source terminal is greater than a preset threshold. This implementation method can double guarantee the accuracy of the same-route SRLG detection.

[0249] For example, the disturbance extracted by network element A1 is coded as code1, the disturbance extracted by network element A2 is coded as code2, and the disturbance of the mechanical vibration excitation source terminal is coded as code0. The coding similarity is represented by Levenshtein distance:

[0250] levab(code1, code2)=1-ch<code1,code2> / max(len_code1, len_code2)

[0251] levab(code1, code0)=1-ch<code1,code0> / max(len_code1, len_code0)

[0252] levab(code2, code0)=1-ch<code2,code0> / max(len_code2, len_code0)

[0253] Among them, levab(a, b) represents the Levenshtein distance of encoding a and b, ch<a,b> It represents the minimum number of operations required to convert code a into code b, and len_a represents the length of code a.

[0254] If the above three groups of similarity levab are all greater than the preset threshold threshold (for example, 0.8), that is, when the similarity between the first disturbance code and the second disturbance code is greater than 0.8, and / or the similarity between the first disturbance code and the second disturbance code, and the disturbance code #0 of the excitation source terminal is greater than 0.8, it is considered that there is a co-routed SRLG at the detection point (the disturbance position of the excitation source terminal).

[0255] In summary, the co-routed SRLG detection method based on mechanical wave coding can automatically identify co-cable risks and ensure service reliability. The introduction of coding supports simultaneous multi-point detection, improving detection efficiency. Coding-based detection effectively overcomes environmental interference, and multiple tests can also improve the accuracy of detection results.

[0256] Figure 13 FIG. 1 is a schematic diagram of an example of a single-point vibration and SRLG detection system based on acoustic waves applicable to the present application. Figure 13 As shown, the system device includes an optical fiber sensing module, a co-routed SRLG detection unit and an acoustic wave vibration excitation source terminal.

[0257] Exemplarily, an optical path is formed between network element A1 and network element B1, and between network element A2 and network element B2, respectively, and the optical cable routes passed by the two optical paths have the same route point or the same route segment. A coded acoustic vibration excitation source terminal is placed at the same route point or the same route segment, and all optical fibers in the same route will sense the disturbance signal of the acoustic vibration excitation source terminal. At the same time, optical fiber sensors are respectively deployed at network elements A1, A2, B1 and B2 to receive optical fiber sensing signals, which are used to analyze whether specific disturbance signals are contained in the optical fiber, and then perform same route detection. In addition, a same route SRLG detection unit is deployed at a certain node in the network to realize same route SRLG detection.

[0258] Among them, the same-route SRLG detection unit performs same-route detection of multiple optical paths by receiving the first information reported by the acoustic vibration excitation source terminal, namely the disturbance position GIS, disturbance time, disturbance code #1, etc., and the second information reported by the optical fiber sensing module, namely the disturbance time, disturbance echo signal and other information.

[0259] Figure 14 FIG. 1 is another schematic diagram of a same-route detection method 1400 applicable to the present application. Figure 14 As shown, in this implementation, the excitation source uses sound waves, and the specific implementation steps include:

[0260] S1410: The excitation source terminal sends first information to the same-route SRLG detection unit.

[0261] Correspondingly, the SRLG detection unit receives the first information from the excitation source terminal via the same route.

[0262] The first information includes at least one of the following information: the disturbance location GIS of the excitation source terminal, the disturbance time information, the disturbance code #1 and other information.

[0263] For example, the cable patrol personnel arrive at the planned detection point and start the mechanical vibration excitation source terminal to disturb the cable. Then, the excitation source terminal reports the first information to the same-route SRLG detection unit for determining the accuracy of the same-route SRLG detection in the subsequent step S1450.

[0264] In the embodiment of the present application, the same-route SRLG detection unit includes a network management, an NCE, and the like.

[0265] It should be noted that, in this implementation, the vibration coding of the excitation source terminal can refer to the above Figure 11 and Figure 12 , for the sake of brevity, no further details will be given here.

[0266] S1420: The same-route SRLG detection unit sends a request message to the optical fiber sensing modules (eg, the first optical fiber sensing module and the second optical fiber sensing module).

[0267] Correspondingly, the optical fiber sensing module receives the request message from the SRLG detection unit on the same route.

[0268] The request message is used to request to obtain the second information (ie, the first disturbance information and the second disturbance information). For example, the second message includes the disturbance echo signal #1 and the disturbance time.

[0269] Specifically, the first disturbance information is a disturbance echo signal generated by the first optical path when the excitation source is disturbed, and the second disturbance information is a disturbance echo signal generated by the second optical path when the excitation source is disturbed.

[0270] Exemplarily, after receiving the excitation source terminal disturbance information, the same-route SRLG detection unit sends a data collection request message to all optical fiber sensor modules within its management area.

[0271] S1430, the optical fiber sensing module collects disturbance echo signal #1 according to the request message.

[0272] Exemplarily, after receiving the data collection request message, each optical fiber sensing module starts collecting data (eg, disturbance echo signals at each point of the optical fiber).

[0273] S1440: The optical fiber sensing module sends second information to the SRLG detection unit on the same route.

[0274] Correspondingly, the SRLG detection unit receives the second information from the optical fiber sensing module via the same route.

[0275] Exemplarily, after collecting the disturbance echo signal of the optical fiber, the optical fiber sensing module reports the disturbance echo signal #1 of the optical fiber disturbance position, the disturbance time, the disturbance distance and other information to the SRLG detection unit on the same route.

[0276] S1450: The same-route SRLG detection unit determines, based on the first information and the second information, that the disturbance position is a same-route position of the first optical path and the second optical path.

[0277] Exemplarily, after collecting data for a period of time (e.g., the second information), the co-route SRLG detection unit initiates co-route SRLG detection. Based on an acoustic wave similarity matching algorithm, the detection unit determines whether the first optical path and the second optical path share a co-route at the disturbance location by determining whether the similarity between the multiple disturbance echo signals reported by the optical fiber sensing module is greater than a preset threshold.

[0278] For example, when the similarity between the disturbance echo signal reported by the optical fiber sensing module of network element A1 and the disturbance echo signal reported by the optical fiber sensing module of network element A2 is greater than the preset threshold value 0.8, it is considered that the disturbance position of the excitation source terminal is the co-route position of the two optical fibers (for example, optical path A1-B1 and optical path A2-B2).

[0279] For example, combined Figure 11 The schematic diagram of the single-point vibration SRLG detection system based on acoustic waves is shown in FIG. The disturbance echo extracted by network element A1 is recorded as data1, and the disturbance echo extracted by network element A2 is recorded as data2. The acoustic wave correlation is represented by r:

[0280] r(data1, data2)=cov(data1, data2) / sqrt(var(data1)*var(data2))

[0281] Where r(a, b) represents the correlation coefficient of a and b, cov(a, b) represents the covariance of a and b, and var(a) represents the variance of a.

[0282] If the similarity r is greater than a preset threshold (eg, 0.8), that is, when the similarity between the first disturbance echo signal and the second disturbance echo signal is greater than 0.8, it is considered that there is a co-routed SRLG at the detection point (the disturbance position of the excitation source terminal).

[0283] In short, the same-route SRLG detection method based on acoustic wave coding can automatically identify the same-cable risks and ensure service reliability.

[0284] Figure 15 This is a schematic diagram of an example of a network-wide automatic same-route SRLG detection system applicable to this application. Figure 15As shown, the system comprises fiber optic sensing modules, co-routed SRLG detection units, and a collection of intelligent excitation source terminals. Fiber optic sensing modules A, B, C, and D are vibration sensing units, while intelligent excitation source terminals are deployed at ODFs #1, #3, #7, and #9, manholes #2, #5, and #8, and optical cross-connect boxes #4 and #6.

[0285] For example, an intelligent excitation source terminal is deployed at key optical fiber physical nodes ODF#1, #3, #7, and #9; pipe shafts #2, #5, and #8; and optical cross-connect boxes #4 and #6. All optical fibers in the same route will sense the disturbance signal from the excitation source terminal. Information feedback / control is transmitted between the same route SRLG detection unit and the intelligent excitation source terminal. Fiber optic sensors are deployed at each network element to receive the fiber optic sensing signal and analyze whether the optical fiber contains specific disturbance signals, thereby performing same route detection. In addition, a same route SRLG detection unit is deployed at a certain node in the network to implement same route SRLG detection.

[0286] Figure 16 FIG. 1 is another schematic diagram of the same-route detection method 1600 applicable to the present application. Figure 16 As shown in the figure, this implementation method uses automatic same-route SRLG detection for the entire network and automatic collection of optical cable network GIS. The specific implementation steps include:

[0287] S1610: The same-route SRLG detection unit sends configuration information to the intelligent excitation terminal set group.

[0288] Correspondingly, the intelligent excitation terminal set respectively receives configuration information from the SRLG detection unit of the same route.

[0289] The configuration information is used to enable the intelligent disturbance excitation source terminal.

[0290] For example, the intelligent excitation terminal set is grouped into three categories: ODF, pipe well, and optical cross-connect box. The same-route SRLG detection unit sends configuration information to the ODF, pipe well, and optical cross-connect box respectively.

[0291] It should be noted that the intelligent excitation source terminal also supports functions such as reporting location GIS information, time information, and remote coding control.

[0292] S1620: The intelligent excitation source terminal configures a disturbance mode according to the configuration information and starts excitation source disturbance.

[0293] S1630: The intelligent excitation source terminal sends a response message to the same-route SRLG detection unit.

[0294] Correspondingly, the SRLG detection unit on the same route receives a response message from the intelligent excitation source terminal.

[0295] The response message is used to reply whether the disturbance enabling of the intelligent excitation source terminal is successful or failed.

[0296] At the same time, the response message may include identification information (IVT_ID-GIS) of the returned IVT-GIS, which is used to indicate the location of whether the disturbance of the intelligent excitation source terminal is successful or failed.

[0297] Specifically, the same-route SRLG detection unit delays waiting to obtain the response success list and the failure list.

[0298] Among them, the response success list can be [IVD_ID1-mod1, IVD_ID2-mod2,...], and the failure list can be associated maintenance orders, etc.

[0299] Optionally, the response message may also include one or more of the following information: disturbance characteristic information, time information, disturbance echo signal, disturbance code and other information.

[0300] S1640: The same-route SRLG detection unit sends a request message to the optical fiber sensor module AD.

[0301] Correspondingly, the optical fiber sensing module AD receives the request message from the SRLG detection unit on the same route.

[0302] The request message is used to request data collection, including disturbance characteristic information, to enable fiber optic sensing to initiate detection. For example, disturbance echo signals at various points on the fiber and disturbance codes are included. Disturbance characteristic information includes at least one of the following: disturbance echo signal, disturbance time, and disturbance distance.

[0303] Exemplarily, after receiving the excitation source terminal disturbance information, the same-route SRLG detection unit sends a data collection request message to all optical fiber sensing modules within its management area.

[0304] S1650: The optical fiber sensing module sends disturbance characteristic information to the SRLG detection unit on the same route.

[0305] Correspondingly, the SRLG detection unit receives the disturbance characteristic information from the optical fiber sensing module in the same route.

[0306] The disturbance characteristic information includes at least one of the following information: disturbance echo signal, disturbance time, disturbance distance, etc.

[0307] Optionally, the optical fiber sensing module collects data, ie, disturbance characteristic information, according to the request message, and further determines the location where the disturbance exists in the optical fiber.

[0308] S1660: After the SRLG detection unit on the same route has delayed waiting for the disturbance echo, the intelligent excitation source terminal disturbance identifier IVT-ID is associated with the fiber identifier Fiber_ID to generate a fiber routing node (Fiber_ID-IVT_ID-dis-GIS) set.

[0309] S1670, the intelligent excitation source terminal is disabled.

[0310] It should be noted that the above steps S1610-S1680 are repeated to traverse all intelligent excitation source terminals.

[0311] S1680: The same-route SRLG detection unit pre-processes the optical fiber routing node set to generate corresponding optical fiber GIS information.

[0312] Among them, preprocessing may include denoising, upstream and downstream association, etc., which is not specifically limited in this application.

[0313] S1690: The same-route SRLG detection unit matches the optical fiber GIS information to determine whether there are similar points in the space and generates a network-wide same-route SRLG detection.

[0314] In summary, the present application provides an efficient and accurate automatic same-cable SRLG detection method, which reduces manual on-site visits, realizes multi-point simultaneous detection, and greatly improves detection efficiency.

[0315] Figure 17 This is a schematic diagram of an example of routing detection in a fiber cut / cutover scenario applicable to this application. Figure 17 As shown in Figure 1, the device includes a fiber optic sensing module, a co-route detection unit, and a pipe well / optical cross-connect box. Fiber optic sensing modules A, B, C, and D are vibration sensing units, and an intelligent excitation source terminal is deployed at each pipe well / optical cross-connect box.

[0316] For example, an intelligent excitation source terminal is deployed at a key physical fiber node, such as a pipe well or optical cross-connect box. All optical fibers along the same route sense the disturbance signal from the excitation source terminal. Fiber optic sensors are deployed at network elements A and B, respectively, to receive the fiber optic sensing signals and analyze whether the fibers contain specific disturbance signals, thereby performing co-route detection. The dashed line represents the optical path between fiber optic sensing modules A and B before splicing, while the solid line represents the optical path after splicing.

[0317] Figure 18 This is another example of a same-route detection method applicable to this application. Figure 18 As shown in the figure, this implementation method performs same-route detection for fiber cut / cutover scenarios. The specific implementation steps include:

[0318] S1810, network element A reports a service power loss alarm and starts a fiber sensor / OTDR to detect the position of the broken fiber relative to the site (eg, site A).

[0319] S1820: Determine the pipe well / optical cross-connect box closest to the fiber break point based on the fiber break position, such as point a in the figure.

[0320] At step S1830, when the service power loss alarm disappears and the service is restored, the NCE determines the pipe wells / optical cross-connects within a radius R, with point a as the center. The NCE sends configuration information (including pattern generation) to the pipe wells / optical cross-connects to start the disturbance stimulus source terminals and collects a list of successful starts.

[0321] S1840: After collecting the startup success list, it sends it to site A and starts the optical fiber sensor deployed at site A to collect data.

[0322] It should be noted that the specific implementation process can refer to the above steps S1640-S1650, which will not be repeated here for the sake of brevity.

[0323] At step S1850, the optical fiber sensor at site A detects whether a matching pattern exists within the pipe well / optical cross section within a radius R with point a as the center. The next hop from point a to point b is confirmed, and the intelligent disturbance excitation source terminal activated in step S1830 is shut down.

[0324] S1860, loop the above steps S1830-S1850 in sequence, that is, the optical fiber routing starts from a and detects the position of the pipe well / optical cross-box in the optical path in sequence to jump to site B and end, realizing the traversal detection of the intelligent excitation source terminal disturbance.

[0325] S1870, re-match the space based on the updated optical fiber GIS information to determine whether there are similar points, and determine the same routing location in the entire network.

[0326] In summary, this application provides an efficient and accurate method for collecting fiber GIS information and automatically detecting SRLGs on the same cable, reducing the need for on-site personnel, enabling simultaneous multi-point detection, and significantly improving detection efficiency. Furthermore, in the event of fiber routing changes or failures, detection and repair can be quickly initiated, ensuring the real-time availability of fiber GIS information.

[0327] In summary, the present application provides a co-route SRLG detection method based on mechanical waves / acoustic waves, which can automatically identify co-cable risks and ensure service reliability. It also provides an efficient and accurate automatic co-cable SRLG detection method / method for collecting fiber optic GIS information, which can reduce on-site manual visits and transform the original manual point-by-point elimination into remote control operation. By introducing coding, simultaneous multi-point detection can be achieved, greatly improving efficiency; effectively overcoming environmental interference, and multiple detections can improve the accuracy of the results. In addition, when the fiber optic route changes or the fiber optic fails, the fault's geographical location can be quickly locked based on the fiber optic GIS, and detection and accurate repairs can be quickly initiated to ensure the real-time nature of the fiber optic GIS information.

[0328] In short, real-time and accurate fiber GIS information / SRLG detection on the same route can ensure beneficial effects such as manageable fiber resources, same route detection, and service path planning.

[0329] Combined with the above Figures 1 to 18 , describes in detail the embodiment of the same route detection method of the present application, and will be combined with Figure 19 and Figure 20 , describes in detail the embodiment of the same-route detection device of the present application. It should be understood that the description of the device embodiment corresponds to the description of the method embodiment, so for parts not described in detail, reference can be made to the previous method embodiment.

[0330] Figure 19 This is a schematic diagram of an example of a same-route detection device provided in an embodiment of the present application. Figure 19 As shown, the device 1000 may include a processing unit 1100 and a transceiver unit 1200 .

[0331] Optionally, the apparatus 1000 may correspond to the same-route detection unit in the above method embodiment, for example, it may be a same-route detection unit, or a component (such as a circuit, chip or chip system) configured in the same-route detection unit.

[0332] Exemplarily, the transceiver unit 1200 is configured to receive first disturbance information from the first optical fiber sensing module and second disturbance information from the second optical fiber sensing module along with the route detection unit, wherein the first disturbance information and the second disturbance information are obtained after the first excitation source terminal turns on the excitation source disturbance, the first disturbance information corresponds to the first optical path, the second disturbance information corresponds to the second optical path, and the first disturbance information and the second disturbance information respectively include disturbance echo signals;

[0333] The processing unit 1100 is configured to use the same-route detection unit to determine that the disturbance position of the first excitation source terminal is the same-route position of the first optical path and the second optical path according to the first disturbance information and the second disturbance information.

[0334] Optionally, the first excitation source terminal controls the excitation source disturbance by coding.

[0335] Optionally, the excitation source of the first excitation source terminal is a mechanical wave or an acoustic wave.

[0336] Optionally, the disturbance code generation method of the first excitation source terminal includes: a mechanical wave coding method based on single-frequency time domain coding and / or an acoustic wave coding method based on multi-frequency combination coding.

[0337] Optionally, the processing unit 1100 is also used to determine, by the same-route detection unit, that the disturbance position of the first excitation source terminal is the same-route position of the first optical path and the second optical path when the similarity between the disturbance echo signals of the first disturbance information and the second disturbance information is greater than a preset threshold.

[0338] Optionally, the transceiver unit 1200 is further configured to receive third disturbance information from the first excitation source terminal through the route detection unit, where the third disturbance information includes at least one of the following information: a disturbance time when the first excitation source terminal starts the excitation source disturbance, a location of the first excitation source terminal, and a disturbance code of the first excitation source terminal;

[0339] The processing unit 1100 is further configured to enable the same-route detection unit to determine that the disturbance position of the first excitation source terminal is the same-route position of the first optical path and the second optical path according to the first disturbance information, the second disturbance information and the third disturbance information.

[0340] Optionally, the processing unit 1100 is further configured to determine, with the route detection unit, a first disturbance code according to the first disturbance information, and / or determine a second disturbance code according to the second disturbance information;

[0341] The processing unit 1100 is also used to determine, by the same-route detection unit, that the disturbance position of the first excitation source terminal is the same-route position of the first optical path and the second optical path when the similarity between at least one of the first disturbance code and the second disturbance code and the disturbance code of the first excitation source terminal is greater than a preset threshold.

[0342] Optionally, the first optical fiber sensing module and the second optical fiber sensing module are respectively deployed in the first network element and the second network element, and the first excitation source terminal is deployed at any position of the first optical path and / or the second optical path.

[0343] It should be understood that the apparatus 1000 may correspond to the same-route detection unit in the method according to the embodiment of the present application, and the apparatus 1000 may include a unit for executing the method performed by the same-route detection unit in the method according to the embodiment of the present application. Furthermore, each unit in the apparatus 1000 and the other operations and / or functions described above are respectively for implementing the corresponding process of the method according to the embodiment of the present application.

[0344] It should also be understood that when the device 1000 is a same-route detection unit, the transceiver unit 1200 in the device 1000 can be implemented by a transceiver, for example, corresponding to Figure 20 The transceiver 2020 in the apparatus 2000 shown in FIG. 1 may be implemented by the processing unit 1100 in the apparatus 1000 by at least one processor, for example, corresponding to Figure 20 The processor 2010 in the device 2000 is shown.

[0345] It should also be understood that when the device 1000 is a chip or chip system configured in the same routing detection unit, the transceiver unit 1200 in the device 1000 can be implemented through an input / output interface, circuit, etc., and the processing unit 1100 in the device 1000 can be implemented through a processor, microprocessor or integrated circuit integrated on the chip or chip system.

[0346] Optionally, the device 1000 may correspond to the optical fiber sensing module in the above method embodiment, for example, it may be an optical fiber sensing module, or a component configured in the optical fiber sensing module (such as a circuit, chip or chip system, etc.).

[0347] Exemplarily, the processing unit 1100 is configured to, after the first excitation source terminal starts excitation source disturbance, cause the first optical fiber sensing module and the second optical fiber sensing module to respectively obtain first disturbance information and second disturbance information, where the first disturbance information corresponds to the first optical path, and the second disturbance information corresponds to the second optical path. The first disturbance information and the second disturbance information respectively include disturbance echo signals, and the first disturbance information and the second disturbance information are used to determine that the disturbance position of the first excitation source terminal is a co-route position of the first optical path and the second optical path.

[0348] The transceiver unit 1200 is configured to enable the first optical fiber sensing module and the second optical fiber sensing module to send the first disturbance information and the second disturbance information to the same-route detection unit respectively.

[0349] Optionally, the first optical fiber sensing module and the second optical fiber sensing module are respectively deployed in the first network element and the second network element, and the first excitation source terminal is deployed at any position of the first optical path and / or the second optical path.

[0350] Optionally, the transceiver unit 1200 is further configured for the first optical fiber sensing module and the second optical fiber sensing module to receive request messages from the same-route detection unit, where the request messages are used to request to obtain the first disturbance information and the second disturbance information respectively.

[0351] It should be understood that the device 1000 may correspond to the same fiber optic sensing module in the method according to the embodiment of the present application, and the device 1000 may include units for executing the method performed by the fiber optic sensing module in the method according to the embodiment of the present application. Furthermore, each unit in the device 1000 and the other operations and / or functions described above are respectively for implementing the corresponding process of the method according to the embodiment of the present application.

[0352] It should also be understood that when the device 1000 is a fiber optic sensor module, the transceiver unit 1200 in the device 1000 can be implemented by a transceiver, for example, corresponding to Figure 20 The transceiver 2020 in the apparatus 2000 shown in FIG. 1 may be implemented by the processing unit 1100 in the apparatus 1000 by at least one processor, for example, corresponding to Figure 20 The processor 2010 in the device 2000 is shown.

[0353] It should also be understood that when the device 1000 is a chip or chip system configured in a fiber optic sensing module, the transceiver unit 1200 in the device 1000 can be implemented through an input / output interface, circuit, etc., and the processing unit 1100 in the device 1000 can be implemented through a processor, microprocessor or integrated circuit integrated on the chip or chip system.

[0354] Figure 20 This is another example of a same-route detection device provided in an embodiment of the present application. Figure 20 As shown, the device 2000 includes a processor 2010, a transceiver 2020, and a memory 2030. The processor 2010, the transceiver 2020, and the memory 2030 communicate with each other via an internal connection path. The memory 2030 is used to store instructions, and the processor 2010 is used to execute the instructions stored in the memory 2030 to control the transceiver 2020 to send and / or receive signals.

[0355] It should be understood that the device 2000 may correspond to the fiber optic sensing / co-routed SRLG detection unit / excitation source terminal in the above-described method embodiment, and may be used to execute the various steps and / or processes performed by the fiber optic sensing / co-routed SRLG detection unit / excitation source terminal in the above-described method embodiment. Optionally, the memory 2030 may include read-only memory and random access memory, and provide instructions and data to the processor. A portion of the memory may also include non-volatile random access memory. The memory 2030 may be a separate device or integrated into the processor 2010. The processor 2010 may be used to execute the instructions stored in the memory 2030, and when the processor 2010 executes the instructions stored in the memory, the processor 2010 is used to execute the various steps and / or processes of the above-described method embodiment corresponding to the fiber optic sensing / co-routed SRLG detection unit / excitation source terminal.

[0356] Optionally, the device 2000 is the same-route detection unit in the above embodiment.

[0357] Exemplarily, the transceiver 2020 is configured to receive first disturbance information from the first optical fiber sensing module and second disturbance information from the second optical fiber sensing module along the same route detection unit, wherein the first disturbance information and the second disturbance information are obtained after the first excitation source terminal turns on the excitation source disturbance, the first disturbance information corresponds to the first optical path, the second disturbance information corresponds to the second optical path, and the first disturbance information and the second disturbance information respectively include disturbance echo signals;

[0358] The processor 2010 is configured to use the same-route detection unit to determine that the disturbance position of the first excitation source terminal is the same-route position of the first optical path and the second optical path according to the first disturbance information and the second disturbance information.

[0359] Optionally, the device 2000 is the optical fiber sensing module in the previous embodiment.

[0360] Processor 2010 is configured to, after the first excitation source terminal initiates excitation source disturbance, cause the first optical fiber sensing module and the second optical fiber sensing module to respectively obtain first disturbance information and second disturbance information, where the first disturbance information corresponds to the first optical path, and the second disturbance information corresponds to the second optical path. The first disturbance information and the second disturbance information each include a disturbance echo signal, and the first disturbance information and the second disturbance information are used to determine that the disturbance position of the first excitation source terminal is a co-route position of the first optical path and the second optical path.

[0361] The transceiver 2020 is used for the first optical fiber sensing module and the second optical fiber sensing module to send the first disturbance information and the second disturbance information to the same-route detection unit respectively.

[0362] The transceiver 2020 may include a transmitter and a receiver. The processor 2010 and the memory 2030 may be integrated on different chips from the transceiver 2020. For example, the processor 2010 and the memory 2030 may be integrated in a baseband chip, and the transceiver 2020 may be integrated in a radio frequency chip. The processor 2010 and the memory 2030 may also be integrated on the same chip as the transceiver 2020. This application is not limited to this.

[0363] Optionally, the device 2000 is a component configured in a fiber optic sensor / co-routed SRLG detection unit / excitation source terminal, such as a circuit, a chip, a chip system, etc.

[0364] The transceiver 2020 may also be a communication interface, such as an input / output interface, a circuit, etc. The transceiver 2020, the processor 2010, and the memory 2020 may all be integrated into the same chip, such as a baseband chip.

[0365] It should be understood that the specific examples in the embodiments of this application are only to help those skilled in the art better understand the technical solutions of this application. The above specific implementation methods can be considered as the optimal implementation methods of this application, rather than limiting the scope of the embodiments of this application.

[0366] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0367] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0368] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0369] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0370] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0371] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0372] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A same-route detection method, characterized in that: Applied to a same-route detection system, the same-route detection system includes a plurality of optical fiber sensing modules, at least one excitation source terminal, and a same-route detection unit, the plurality of optical fiber sensing modules include a first optical fiber sensing module and a second optical fiber sensing module, the at least one excitation source terminal includes a first excitation source terminal, the method includes: The same-route detection unit receives first disturbance information from the first optical fiber sensing module and second disturbance information from the second optical fiber sensing module, wherein the first disturbance information and the second disturbance information are obtained after the first excitation source terminal turns on the excitation source disturbance, the first disturbance information corresponds to the first optical path, the second disturbance information corresponds to the second optical path, and the first disturbance information and the second disturbance information respectively include disturbance echo signals; The same-route detection unit determines, based on the first disturbance information and the second disturbance information, that the disturbance position of the first excitation source terminal is the same-route position of the first optical path and the second optical path.

2. The method according to claim 1, characterized in that The first excitation source terminal controls the excitation source disturbance in an encoding manner.

3. The method according to claim 1 or 2, characterized in that The excitation source of the first excitation source terminal is a mechanical wave or an acoustic wave.

4. The method according to claim 1 or 2, characterized in that The generation method of the disturbance code of the first excitation source terminal includes: a mechanical wave coding method based on single-frequency time domain coding and / or an acoustic wave coding method based on multi-frequency combination coding.

5. The method according to claim 1 or 2, characterized in that The same-route detection unit determines, based on the first disturbance information and the second disturbance information, that the disturbance position of the first excitation source terminal is the same-route position of the first optical path and the second optical path, including: When the similarity between the disturbance echo signals of the first disturbance information and the second disturbance information is greater than a preset threshold, the same-route detection unit determines that the disturbance position of the first excitation source terminal is the same-route position of the first optical path and the second optical path.

6. The method according to claim 1 or 2, characterized in that The method further comprises: The same-route detection unit receives third disturbance information from the first excitation source terminal, where the third disturbance information includes at least one of the following information: a disturbance time when the first excitation source terminal starts the excitation source disturbance, a location of the first excitation source terminal, and a disturbance code of the first excitation source terminal; The same-route detection unit determines, based on the first disturbance information, the second disturbance information, and the third disturbance information, that the disturbance position of the first excitation source terminal is the same-route position of the first optical path and the second optical path.

7. The method according to claim 6, characterized in that The same-route detection unit determines, based on the first disturbance information, the second disturbance information, and the third disturbance information, that the disturbance position of the first excitation source terminal is the same-route position of the first optical path and the second optical path, including: The same-route detection unit determines a first disturbance code according to the first disturbance information, and / or determines a second disturbance code according to the second disturbance information; When the similarity between at least one of the first disturbance code and the second disturbance code and the disturbance code of the first excitation source terminal is greater than a preset threshold, the same-route detection unit determines that the disturbance position of the first excitation source terminal is the same-route position of the first optical path and the second optical path.

8. The method according to claim 1 or 2, characterized in that The first optical fiber sensing module and the second optical fiber sensing module are respectively deployed in a first network element and a second network element, and the first excitation source terminal is deployed at any position of the first optical path and / or the second optical path.

9. The method according to claim 1 or 2, characterized in that The method further comprises: The same-route detection unit sends a request message to the first optical fiber sensing module and the second optical fiber sensing module, where the request message is used to request to obtain the first disturbance information and the second disturbance information respectively.

10. The method according to claim 1 or 2, characterized in that The at least one excitation source terminal further includes a second excitation source terminal, and the method further includes: The same-route detection unit receives third disturbance information from the first optical fiber sensing module and fourth disturbance information from the second optical fiber sensing module, wherein the third disturbance information and the fourth disturbance information are obtained after the second excitation source terminal turns on the excitation source disturbance, the third disturbance information corresponds to the first optical path, the fourth disturbance information corresponds to the second optical path, and the third disturbance information and the fourth disturbance information respectively include a disturbance time and a disturbance echo signal; The same-route detection unit generates first optical fiber geographic information system (GIS) information according to the first disturbance information and the third disturbance information, and generates second optical fiber geographic information system (GIS) information according to the second disturbance information and the fourth disturbance information; The same-route detection unit determines that the disturbance position of the first excitation source terminal and / or the disturbance position of the second excitation source terminal are the same-route positions of the first optical path and the second optical path based on the similar points in the matching space of the first optical fiber GIS information and the second optical fiber GIS information.

11. The method according to claim 1 or 2, characterized in that The method further comprises: The same-route detection unit receives at least one disturbance information from the first optical fiber sensing module, wherein the at least one disturbance information corresponds one-to-one to at least one excitation source terminal within a first range, wherein the first range is a range with a radius R and a first excitation source terminal closest to a target fiber break point as a center, and the target fiber break point is a fiber break position detected by the first optical fiber sensing module in the first optical path; The same-route detection unit determines at least one second excitation source terminal that is the next hop from the first excitation source terminal according to the at least one disturbance information within the first range, and the at least one second excitation source terminal is an excitation source terminal on the first optical path.

12. The method according to claim 11, characterized in that The method further comprises: The same-route detection unit receives at least one disturbance information from the first optical fiber sensing module, the at least one disturbance information corresponding to at least one excitation source terminal within an i-th range, the i-th range being a range with the i-th excitation source terminal as the center and a radius of R, the i-th excitation source terminal being the excitation source terminal of the next hop of the i-1-th excitation source terminal on the first optical path, where i is an integer greater than or equal to 2; The same-route detection unit determines, based on the at least one disturbance information within the i-th range, at least one (i+1)th excitation source terminal that is the next hop from the i-th excitation source terminal, the at least one (i+1)th excitation source terminal being the excitation source terminal closest to a third network element on the first optical path, the third network element and the first network element being the starting position and the ending position of the first optical path, and the first optical fiber sensing module being deployed in the first network element; The same-route detection unit updates the same-route of the first optical path based on the i+1 excitation source terminals.

13. A same-route detection method, characterized in that: Applied to a same-route detection system, the same-route detection system includes a plurality of optical fiber sensing modules, at least one excitation source terminal, and a same-route detection unit, the plurality of optical fiber sensing modules include a first optical fiber sensing module and a second optical fiber sensing module, the at least one excitation source terminal includes a first excitation source terminal, the method includes: After the first excitation source terminal starts excitation source disturbance, the first optical fiber sensing module and the second optical fiber sensing module respectively obtain first disturbance information and second disturbance information, where the first disturbance information corresponds to the first optical path, and the second disturbance information corresponds to the second optical path, the first disturbance information and the second disturbance information respectively include disturbance echo signals, and the first disturbance information and the second disturbance information are used to determine that the disturbance position of the first excitation source terminal is a co-route position of the first optical path and the second optical path; The first optical fiber sensing module and the second optical fiber sensing module respectively send the first disturbance information and the second disturbance information to the same-route detection unit.

14. The method according to claim 13, characterized in that The first optical fiber sensing module and the second optical fiber sensing module are respectively deployed in a first network element and a second network element, and the first excitation source terminal is deployed at any position of the first optical path and / or the second optical path.

15. The method according to claim 13 or 14, characterized in that The method further comprises: The first optical fiber sensing module and the second optical fiber sensing module receive request messages from the same-route detection unit, where the request messages are used to request to obtain the first disturbance information and the second disturbance information respectively.

16. A same-route detection device, characterized in that: include: a transceiver unit, configured to receive first disturbance information from a first optical fiber sensing module and second disturbance information from a second optical fiber sensing module, wherein the first disturbance information and the second disturbance information are obtained after a first excitation source terminal turns on excitation source disturbance, the first disturbance information corresponds to a first optical path, the second disturbance information corresponds to a second optical path, and the first disturbance information and the second disturbance information respectively include disturbance echo signals; A processing unit is configured to determine, based on the first disturbance information and the second disturbance information, that the disturbance position of the first excitation source terminal is a co-route position of the first optical path and the second optical path.

17. The device according to claim 16, characterized in that The first excitation source terminal controls the excitation source disturbance in an encoding manner.

18. The device according to claim 16 or 17, characterized in that The excitation source of the first excitation source terminal is a mechanical wave or an acoustic wave.

19. The device according to claim 16 or 17, characterized in that The generation method of the disturbance code of the first excitation source terminal includes: a mechanical wave coding method based on single-frequency time domain coding and / or an acoustic wave coding method based on multi-frequency combination coding.

20. The device according to claim 16 or 17, characterized in that When the similarity between the disturbance echo signals of the first disturbance information and the second disturbance information is greater than a preset threshold, the processing unit is further configured to determine that the disturbance position of the first excitation source terminal is a co-route position of the first optical path and the second optical path.

21. The device according to claim 16 or 17, characterized in that The transceiver unit is further configured to receive third disturbance information from the first excitation source terminal, the third disturbance information including at least one of the following information: a disturbance time when the first excitation source terminal starts the excitation source disturbance, a location of the first excitation source terminal, and a disturbance code of the first excitation source terminal; The processing unit is further configured to determine, based on the first disturbance information, the second disturbance information, and the third disturbance information, that the disturbance position of the first excitation source terminal is a co-route position of the first optical path and the second optical path.

22. The device according to claim 21, characterized in that The processing unit is further configured to determine a first disturbance code according to the first disturbance information, and / or determine a second disturbance code according to the second disturbance information; When the similarity between at least one of the first disturbance code and the second disturbance code and the disturbance code of the first excitation source terminal is greater than a preset threshold, the processing unit is further used to determine that the disturbance position of the first excitation source terminal is a co-route position of the first optical path and the second optical path.

23. The device according to claim 16 or 17, characterized in that The first optical fiber sensing module and the second optical fiber sensing module are respectively deployed in a first network element and a second network element, and the first excitation source terminal is deployed at any position of the first optical path and / or the second optical path.

24. The device according to claim 16 or 17, characterized in that The transceiver unit is further configured to send request messages to the first optical fiber sensing module and the second optical fiber sensing module, wherein the request messages are respectively used to request to obtain the first disturbance information and the second disturbance information.

25. The device according to claim 16 or 17, characterized in that The transceiver unit is further configured to receive third disturbance information from the first optical fiber sensing module, and receive fourth disturbance information from the second optical fiber sensing module, wherein the third disturbance information and the fourth disturbance information are obtained after the second excitation source terminal turns on the excitation source disturbance, the third disturbance information corresponds to the first optical path, the fourth disturbance information corresponds to the second optical path, and the third disturbance information and the fourth disturbance information respectively include a disturbance time and a disturbance echo signal; The processing unit is further configured to generate first optical fiber geographic information system (GIS) information according to the first disturbance information and the third disturbance information, and to generate second optical fiber geographic information system (GIS) information according to the second disturbance information and the fourth disturbance information; The processing unit is further used to determine that the disturbance position of the first excitation source terminal and / or the disturbance position of the second excitation source terminal are the co-route positions of the first optical path and the second optical path based on the similar points in the matching space of the first optical fiber GIS information and the second optical fiber GIS information.

26. The device according to claim 16 or 17, characterized in that The transceiver unit is further configured to receive at least one disturbance information from the first optical fiber sensing module, wherein the at least one disturbance information corresponds one-to-one to at least one excitation source terminal within a first range, wherein the first range is a range with a radius R and a first excitation source terminal closest to a target fiber break point as a center, and the target fiber break point is a fiber break position detected by the first optical fiber sensing module in the first optical path; The processing unit is further configured to determine at least one second excitation source terminal that is the next hop from the first excitation source terminal based on the at least one disturbance information within the first range, wherein the at least one second excitation source terminal is an excitation source terminal on the first optical path.

27. The device according to claim 26, characterized in that The transceiver unit is further configured to receive at least one disturbance information from the first optical fiber sensing module, wherein the at least one disturbance information corresponds one-to-one to at least one excitation source terminal within an i-th range, wherein the i-th range is a range with the i-th excitation source terminal as the center and a radius R, wherein the i-th excitation source terminal is the excitation source terminal of the next hop of the i-1-th excitation source terminal on the first optical path, and i is an integer greater than or equal to 2; The processing unit is further configured to determine, based on the at least one disturbance information within the i-th range, at least one (i+1)th excitation source terminal that is a next-hop from the i-th excitation source terminal, the at least one (i+1)th excitation source terminal being an excitation source terminal closest to a third network element on the first optical path, the third network element and the first network element being starting positions of the first optical path, and the first optical fiber sensing module being deployed in the first network element; The processing unit is further configured to update the same route of the first optical path based on the i+1 excitation source terminals.

28. A same-route detection device, characterized in that: include: a processing unit, configured to, after the first excitation source terminal starts excitation source disturbance, obtain, by the first optical fiber sensing module and the second optical fiber sensing module, first disturbance information and second disturbance information, respectively, wherein the first disturbance information corresponds to the first optical path, and the second disturbance information corresponds to the second optical path, the first disturbance information and the second disturbance information respectively include disturbance echo signals, and the first disturbance information and the second disturbance information are used to determine that the disturbance position of the first excitation source terminal is a co-route position of the first optical path and the second optical path; A transceiver unit is used for the first optical fiber sensing module and the second optical fiber sensing module to send the first disturbance information and the second disturbance information to the same-route detection unit respectively.

29. The device according to claim 28, characterized in that The first optical fiber sensing module and the second optical fiber sensing module are respectively deployed in a first network element and a second network element, and the first excitation source terminal is deployed at any position of the first optical path and / or the second optical path.

30. The device according to claim 28 or 29, characterized in that The transceiver unit is further configured to enable the first optical fiber sensing module and the second optical fiber sensing module to receive request messages from the same-route detection unit, wherein the request messages are respectively used to request to obtain the first disturbance information and the second disturbance information.

31. A same-route detection device, characterized in that: include: processor and interface circuits, The interface circuit is used to receive signals from other devices outside the device and transmit them to the processor, or send signals from the processor to other devices outside the device. The processor uses logic circuits or executes code instructions for the device to implement the method as described in any one of claims 1 to 15.

32. A same-route detection system, characterized in that: include: A same-route detection unit and a plurality of optical fiber sensing modules, wherein the same-route detection unit is used to execute the method according to any one of claims 1 to 12, and the plurality of optical fiber sensing modules are used to execute the method according to any one of claims 13 to 15.

33. A chip, characterized in that: include: A processor, configured to call and run a computer program from a memory, so that the chip installed therein executes the method according to any one of claims 1 to 15.

34. A computer storage medium, characterized in that The computer storage medium stores computer instructions, which, when executed on a computer, enable the computer to perform the method according to any one of claims 1 to 15.

35. A computer program product, characterized in that When the computer program code or instructions are executed on a computer, the computer is caused to perform the method according to any one of claims 1 to 15.

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