CN114337800A - Passive optical network fault analysis method, device, equipment and storage medium - Google Patents
Passive optical network fault analysis method, device, equipment and storage medium Download PDFInfo
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Abstract
The application relates to the technical field of optical communication, and discloses a method, a device, equipment and a storage medium for analyzing faults of a passive optical network, wherein the method comprises the following steps: acquiring the insertion loss of physical resources, the insertion loss of an optical cable and the insertion loss of a junction point between the optical cable and the physical resources in an optical path corresponding to a Passive Optical Network (PON) port under an Optical Line Terminal (OLT); obtaining a reasonable attenuation value of the optical path according to the insertion loss of the physical resource, the insertion loss of the optical cable and the insertion loss of the splicing point; acquiring the luminous power of the PON port and the receiving power of a plurality of Optical Network Units (ONU) below the PON port; obtaining an actual attenuation value of the optical path according to the luminous power of the PON port and the light receiving power of the plurality of ONUs; and analyzing whether the optical path has faults or not according to the actual attenuation value and the reasonable attenuation value. According to the method and the device, whether the optical path has a fault can be judged quickly by measuring and calculating the reasonable attenuation value and the actual attenuation value of the corresponding optical path of the PON port.
Description
Technical Field
The present application relates to the field of optical communications technologies, and in particular, to a method, an apparatus, a device, and a storage medium for analyzing a fault of a passive optical network.
Background
Optical Communication (Optical Communication) is a Communication method using Optical waves as carriers, and is widely used for signal transmission in various Communication systems. FTTX has become a main mode of broadband access, and PON technology, as one of the best technical solutions for implementing FTTX, has been generally applied to the access layer coverage of metropolitan area networks of various operators. In an xPON Network of a passive Optical Network, a common networking system is composed of an internet management system (EMS), an OLT, an Optical Distribution Network (ODN) and a plurality of ONUs: the OLT is used as central office equipment to manage, connect and assemble a plurality of ONU equipment by taking a PON port as a unit through an ODN network; the ONU equipment receives the management of the OLT equipment to realize the access of user services, thereby realizing the functions of data services, configuration management and the like; the ODN network is mainly composed of a trunk fiber, a plurality of branch fibers, and an optical splitter or other connectors for connecting the trunk fiber and the branch fibers. The xPON serves as a topological structure of point-to-multipoint: and managing and maintaining a plurality of ONUs by taking the PON port corresponding to the xPON OLT as a basic unit.
The xPON network normally operates, the quality of an optical path needs to be guaranteed to be normal firstly, the whole-process loss of the ODN is required to be within the receiving sensitivity of the ONU and the OLT, when the whole-process loss of the ODN exceeds the receiving sensitivity of the ONU or the OLT, the ONU cannot be activated, and communication cannot be established. Therefore, a common method for ensuring the quality of the optical path from the ONU to the OLT in the FTTX PON network is to set a fixed optical path attenuation reference value according to the receiving sensitivity of the optical module of the ONU or the OLT, and to require and control the ODN to have no loss exceeding the reference value in the construction, the opening, and the maintenance.
However, in an actual network environment, the optical path length, the optical path connection and active connection number, and the OBD splitting ratio of the ODN between the OLT and the ONU are different, and the fixed optical path attenuation reference value is used to actually cover the attenuation abnormality and the line quality problem existing in the line, which directly affects the operator to find the line quality problem as early as possible, eliminates the transmission hidden trouble, and threatens the stable operation of the FTTX communication system.
The related optical path quality monitoring analysis depends on the deployment of the terminal fiber bragg grating and the local side fiber analyzer, the cost is high, the light attenuation problem is positioned in a segmented mode or depends on alarm information reported by a network manager and equipment, the optical path fault which is in the degradation process but does not affect the service cannot be found in time, or the quality of the line is judged by depending on a fixed light attenuation threshold set based on the receiving sensitivity of an optical device, and the problem hidden danger caused by the degradation of the line cannot be found in time.
Disclosure of Invention
Embodiments of the present application provide a method, an apparatus, a device, and a storage medium for analyzing a fault of a passive optical network, so that problems of difficulty in fault location and low efficiency can be solved at least to a certain extent, and whether a fault exists in an ODN optical path can be quickly determined by measuring and calculating a reasonable attenuation value and an actual attenuation value of the ODN optical path at a PON port.
Other features and advantages of the present application will be apparent from the following detailed description, or may be learned by practice of the application.
According to a first aspect of embodiments of the present application, a method for analyzing a fault of a passive optical network is provided, where the method includes:
acquiring the insertion loss of physical resources, the insertion loss of an optical cable and the insertion loss of a junction point between the optical cable and the physical resources in an optical path corresponding to a Passive Optical Network (PON) port under an Optical Line Terminal (OLT);
obtaining a reasonable attenuation value of the optical path according to the insertion loss of the physical resource, the insertion loss of the optical cable and the insertion loss of the splicing point;
acquiring the luminous power of the PON port and the receiving power of a plurality of Optical Network Units (ONU) below the PON port;
obtaining an actual attenuation value of the optical path according to the luminous power of the PON port and the light receiving power of the plurality of ONUs;
and analyzing whether the optical path has faults or not according to the actual attenuation value and the reasonable attenuation value.
In some embodiments of the present application, based on the above scheme, the physical resources include an optical splitter OBD, a flange, and a quick connector;
obtaining a reasonable attenuation value of the optical path according to the insertion loss of the physical resource, the insertion loss of the optical cable and the insertion loss of the splicing point, wherein the reasonable attenuation value comprises the following steps:
and taking the insertion loss of the OBD, the insertion loss of the flange plate, the insertion loss of the quick connector, the insertion loss of the optical cable and the sum of the insertion losses of the splicing points as a reasonable attenuation value of the optical path.
In some embodiments of the present application, based on the above scheme, the insertion loss of the optical cable is a product of a length of the optical cable and an optical attenuation value per unit length, and the length of the optical cable is obtained by time domain reflectometry.
In some embodiments of the present application, based on the above scheme, obtaining an actual attenuation value of the optical path according to the light emitting power of the PON port and the light receiving powers of the ONUs includes:
determining a maximum received optical power among the plurality of ONUs;
and taking the difference between the luminous power of the PON port and the maximum light receiving power of the plurality of ONUs as the actual attenuation value of the optical path.
In some embodiments of the present application, based on the above scheme, the analyzing whether the optical path has a fault according to the actual attenuation value and the reasonable attenuation value includes:
determining a difference between the actual decay value and the rational decay value;
if the difference value is larger than or equal to a preset first preset threshold value, determining that the optical path has a fault;
and if the difference value is smaller than the first preset threshold value, determining that the optical path has no fault.
In some embodiments of the present application, based on the above scheme, the method further includes:
if the optical path has a fault, determining the dispersion degree of the light receiving power of a plurality of ONUs under the PON port;
if the discrete degree is less than or equal to a preset second preset threshold value, determining that a main line of the optical path has a fault;
and if the discrete degree is greater than the second preset threshold value, determining that the end light path of the light path has a fault.
In some embodiments of the present application, based on the above scheme, the determining a discrete degree of received optical power of a plurality of ONUs under the PON port includes:
and taking the variance of the received optical power of a plurality of ONUs under the PON port as the discrete degree.
According to a second aspect of the embodiments of the present application, there is provided a passive optical network fault location apparatus, the apparatus including:
a first obtaining unit, configured to obtain, in an optical path corresponding to a passive optical network PON port in an optical line terminal OLT, an insertion loss of a physical resource, an insertion loss of an optical cable, and an insertion loss of a connection point between the optical cable and the physical resource;
the reasonable attenuation value determining unit is used for obtaining a reasonable attenuation value of the optical path according to the insertion loss of the physical resource, the insertion loss of the optical cable and the insertion loss of the splicing point;
a second obtaining unit, configured to obtain light emitting power of the PON port and light receiving power of a plurality of optical network units ONUs below the PON port;
an actual attenuation determining unit, configured to obtain an actual attenuation value of the optical path according to the light emitting power of the PON port and the light receiving powers of the ONUs;
and the fault analysis unit is used for analyzing whether the optical path has faults or not according to the actual attenuation value and the reasonable attenuation value.
According to a third aspect of embodiments of the present application, there is provided an electronic apparatus, including:
one or more processors;
storage means for storing one or more programs which, when executed by the one or more processors, cause the electronic device to carry out the method of the first aspect.
According to a fourth aspect of embodiments of the present application, there is provided a computer-readable medium having stored thereon a computer program which, when executed, implements the method of the first aspect described above.
According to the embodiment of the application, whether the ODN optical path has a fault can be quickly judged by measuring and calculating the reasonable attenuation value and the actual attenuation value of the optical path under the PON port, and the optical path can be used as a basis for judging the circuit abnormity and organizing the circuit regulation, so that the stable operation of an optical network is ensured.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
fig. 1 is a schematic diagram of a networking architecture of a PON network according to an embodiment of the present application.
Fig. 2 is a flowchart of a passive optical network fault analysis method according to an embodiment of the present application
Fig. 3 is a schematic diagram of a networking architecture of an ODN network according to an embodiment of the present disclosure.
Fig. 4 is a schematic diagram of a networking architecture of another ODN network according to an embodiment of the present application.
Fig. 5 is a schematic structural diagram of a passive optical network fault analysis device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the subject matter of the present application can be practiced without one or more of the specific details, or with other methods, components, devices, steps, and so forth. In other instances, well-known methods, devices, implementations, or operations have not been shown or described in detail to avoid obscuring aspects of the application.
The block diagrams shown in the figures are functional entities only and do not necessarily correspond to physically separate entities. I.e. these functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor means and/or microcontroller means.
The flow charts shown in the drawings are merely illustrative and do not necessarily include all of the contents and operations/steps, nor do they necessarily have to be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.
In the description of the present application, it is to be understood that the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
Fig. 1 is a schematic diagram of a networking architecture of a PON network according to an embodiment of the present application, where the embodiment of the present application may operate on the network architecture shown in fig. 1, and the PON network includes: EMS110, OLT120, ODN130, ONU140, wherein,
an EMS110 for performing operations such as configuration, management, and maintenance of the OLT120 and the PON network; the EMS network manager maintains and manages the history information of the OLT120 and the ONU140 and related alarm and notification messages; and can finish judging and positioning the particular abnormal information according to the related alarm and notice message;
the OLT120 manages and controls the ONU140, completes registration authentication of the ONU140 under the condition that the optical path quality is normal, and completes forwarding of data;
the ODN130 is configured to connect the ONUs 140 with different numbers under the OLT120, serve as a direct physical connection channel between the OLT120 and the ONUs 140, and are formed by combining multiple optical fibers (one or two (mutually protected) trunk optical fibers and multiple branch optical fibers) and other related physical optical devices in units of PON ports;
and the ONU140 is configured to assume a role of a terminal device of a home subscriber. And under the condition that the quality of the optical path is normal, the registration and the uplink/downlink forwarding of the data are completed under the control of the OLT.
Fig. 2 is a flowchart of a passive optical network fault analysis method according to an embodiment of the present application. As shown in fig. 2, the method includes the following steps.
Step 210: the method comprises the steps of obtaining the insertion loss of physical resources, the insertion loss of an optical cable and the insertion loss of a connection point between the optical cable and the physical resources in an optical path corresponding to a Passive Optical Network (PON) port under an Optical Line Terminal (OLT).
In a specific implementation, specific information of the optical path corresponding to the PON port, including information such as an OBD splitting ratio, an optical path segment number, and a contact number, may be acquired from a resource system storing information of each network node of the optical network according to key information such as a port number corresponding to the PON port and an OBD number in the optical path under the OLT.
Step 220: and obtaining a reasonable attenuation value of the optical path according to the insertion loss of the physical resource, the insertion loss of the optical cable and the insertion loss of the splicing point.
According to the loss values of all physical resources, optical cables and splicing points (optical fiber splicing points and movable connecting points) in the optical path, the whole-process reasonable attenuation value of the optical path can be counted.
Step 230: and acquiring the luminous power of the PON port and the receiving power of a plurality of optical network units ONU under the PON port.
In specific implementation, the light emitting power of the PON port and the light receiving power of each ONU can be obtained through query by the EMS network management system.
Step 240: and obtaining an actual attenuation value of the optical path according to the luminous power of the PON port and the light receiving power of the ONU.
Fig. 3 is a schematic diagram of a networking framework of an ODN network according to an embodiment of the present disclosure, where as shown in fig. 3, an OBD is a convergence point of a user below a single PON port in the PON network, and a link above the OBD, that is, a trunk optical path, is a single fiber core; since a plurality of end optical paths, which are optical paths with cores separated from optical paths with optical paths.
Because the ONUs assume the role of terminal equipment of a home user, and different ONUs are placed in different homes or cell environments, the actual optical attenuation of the peripheral optical paths corresponding to different ONUs is different, that is, the actual attenuation values of links from the same PON port to different ONUs are different.
In specific implementation, the optical attenuation value of the link with the minimum optical attenuation from the PON port to the ONU or the average optical attenuation value of each link may be selected as the actual attenuation value of the optical path corresponding to the PON port.
Step 250: and analyzing whether the optical path has faults or not according to the actual attenuation value and the reasonable attenuation value.
According to the embodiment of the application, whether the optical path has a fault or not can be quickly judged by measuring and calculating the reasonable attenuation value and the actual attenuation value of the optical path corresponding to the PON port, the analysis is carried out by relying on the existing network management and resource system data without depending on the arrangement of local end and peripheral instrument equipment, the low cost can be used as a basis for judging the circuit abnormity and organizing the circuit regulation, and the network robustness is improved.
Fig. 4 is a schematic diagram of a networking framework of another ODN network provided in an embodiment of the present application, where as shown in fig. 4, the ODN network includes an optical fiber cable located between network devices in an office room, a trunk cable connecting the network devices in the office room and an optical cross-connect box, an optical splitter (OBD) located in the optical cross-connect box, a distribution cable connecting the optical cross-connect box and the optical fiber distribution box, a quick connector located in the optical fiber distribution box, a butterfly-shaped optical cable connecting the optical fiber distribution box and a user terminal, and an ONU at the user terminal, and different segments of the optical fiber cables are connected through a flange or the quick connector.
In some embodiments of the present application, in combination with the network architecture shown in fig. 4, based on the above scheme, the physical resources include an optical splitter OBD, a flange, and a quick connector;
obtaining a reasonable attenuation value of the optical path according to the insertion loss of the physical resource, the insertion loss of the optical cable and the insertion loss of the splicing point, wherein the reasonable attenuation value comprises the following steps:
and taking the sum of the insertion loss of the OBD, the insertion loss of the flange plate, the insertion loss of the quick connector, the insertion loss of the optical cable and the insertion loss of the connection point as a reasonable attenuation value of the optical path.
In the specific implementation, the jump fiber, the quick connector and the optical cable are connected in a fusion welding or flange coupling mode, the number of optical path connection points can be obtained through optical cable maintenance connection records and an optical path resource system, and the reasonable attenuation value of the optical path can be calculated by adopting the following formula.
Reasonable attenuation value is welding point number, welding point unit insertion loss, flange plate number, flange plate unit insertion loss, quick connector unit insertion loss, optical distance, optical path unit attenuation and optical splitter insertion loss
The following table shows the insertion loss for different access devices:
| accessDevice | Insertion loss | Beam splitter (splitting ratio) | Insertion loss |
| Welding point | 0.1dB | 1:2 | 3.5dB |
| Flange plate | 0.2dB | 1:4 | 7dB |
| Cold junction | 0.3dB | 1:8 | 10.3dB |
| Quick connector | 0.3dB | 1:16 | 13.6dB |
| Optical cable | 0.35dB/KM | 1:32 | 16.5dB |
| 1:64 | 20.2dB |
As shown in the table above, the insertion loss is different for the splitters with different splitting ratios. The reasonable attenuation value of the corresponding optical path is calculated through the actual physical resources corresponding to each optical path, the difference of the reasonable attenuation values of the optical path caused by adopting optical cables with different lengths, splicing points with different numbers and optical splitters with different splitting ratios in different optical paths is fully considered, and the problem that different optical paths use the unified optical attenuation threshold values of systems to perform fault analysis is avoided.
In some embodiments of the present application, based on the above scheme, the insertion loss of the optical cable is a product of a length of the optical cable and an optical attenuation value per unit length, and the length of the optical cable is obtained by time domain reflectometry.
In the specific implementation, the length of the optical cable can be measured by an optical time domain reflectometer, namely an optical fiber analyzer, the working basis of the optical backscattering principle is that the backscattering of the optical fiber is caused by Rayleigh scattering and Fresnel reflection, and the Fresnel reflection is caused by refractive index change and generally occurs at a splicing point, a butt joint and the end surface of the optical fiber; in the back scattering, a part of scattered light caused by the nonuniformity of the medium is transmitted back to the transmitting end along the opposite direction of the optical path. The optical time domain reflectometer measures the intensity of the back scattering light in the optical fiber according to the principle that the intensity has a certain rule.
In some embodiments of the present application, based on the above scheme, obtaining an actual attenuation value of an optical path according to a light emitting power of the PON port and light receiving powers of the ONUs includes:
determining a maximum received optical power in a plurality of ONUs;
the difference between the light emission power of the PON port and the maximum light reception power of the plurality of ONUs is used as the actual attenuation value of the optical path.
As mentioned above, there is a difference in optical attenuation values of links from the same PON port to different ONUs. In the embodiment of the present application, the optical attenuation value of the link with the minimum optical attenuation at the same PON port is used as the actual attenuation value of the optical path corresponding to the PON port, and it is considered that the optical attenuation values of other links are larger due to the environment where the corresponding peripheral optical path is located, so as to approximately eliminate the difference between the optical attenuation values of the peripheral optical paths of each user.
In some embodiments of the present application, based on the above scheme, analyzing whether the optical path has a fault according to the actual attenuation value and the reasonable attenuation value includes:
determining the difference between the actual attenuation value and the reasonable attenuation value;
if the difference value is larger than or equal to a preset first preset threshold value, determining that the optical path has a fault;
and if the difference value is smaller than the first preset threshold value, determining that no fault exists in the optical path.
And setting a first preset threshold as a fault-tolerant space based on actual maintenance experience, and when the actual attenuation value of a certain optical path deviates from the reasonable attenuation value greatly, indicating that certain access equipment in the optical path has a fault.
In some embodiments of the present application, based on the above scheme, the method further comprises:
if the optical path has a fault, determining the dispersion degree of the light receiving power of a plurality of ONUs under the PON port;
if the discrete degree is less than or equal to a preset second preset threshold value, determining that a main line of the optical path has a fault;
and if the discrete degree is greater than a second preset threshold value, determining that the end light path of the light path has a fault.
With reference to fig. 4 and the above analysis, for links from the same PON port to different ONUs, the trunk optical path above the OBD is the same; OBD the following tip optical path is different for different ONUs. In order to locate whether the fault occurs in the main optical path above the OBD or in the peripheral optical path below the OBD, the method analyzes the light receiving power values of all the ONUs under the PON port corresponding to the optical path with the fault, and determines the discrete degree of the light receiving power values of the ONUs.
When the dispersion degree of the optical power values of all ONUs under the PON port is low, the fluctuation of the data of the received optical power values of each ONU is small, that is, the fluctuation of the optical attenuation values of links from the same PON port to different ONUs is small, which indicates that there is a common problem in different links from the PON port to each ONU, that is, there is a problem in the main optical path, so that the possibility that the actual attenuation value of the optical path exceeds the reasonable attenuation value is high, and it is determined that the fault is located in a section above the OBD, and the fault in the main optical path causes the received optical power of all the ONUs under the main optical path to be affected.
When the dispersion degree of the optical power values of all ONUs under the PON port is high, the fluctuation of the data of the received optical power values of each ONU is large, that is, the fluctuation of the optical attenuation values of links from the same PON port to different ONUs is large, which indicates that there is no common problem in the lines from the PON port to each ONU, that is, the possibility that the actual attenuation value of the optical path exceeds the reasonable attenuation value due to the trunk optical path is low, and it is determined that the fault is located in a section below the OBD, and the fault of a certain peripheral optical path is caused.
In a specific implementation, the degree of dispersion of the received optical power of each ONU can be described by using a range difference, a quartering difference, a variance and a standard deviation, a coefficient of variation, and the like. Range, also called Range, is the difference between the maximum and minimum values in a set of data; the Interquartile Range refers to the difference between the 3 rd quartile and the 1 st quartile, also referred to as the inner or quartile Range.
In practical application, the link route part engineer more than the OBD maintains, and the link route part engineer below the OBD maintains, and this application can be with circuit fault location more than the OBD or below, can realize the quick segmentation of trouble, and accurate judgement is maintained the paragraph, clearly maintains responsible for the engineer, reduces to maintain the invalid circulation of worksheet, promotes renovation efficiency.
In some embodiments of the present application, based on the foregoing scheme, determining a discrete degree of received optical power of a plurality of ONUs under a PON port includes:
the variance of the received optical power of a plurality of ONUs under the PON port is regarded as the dispersion degree.
Whether the optical path has faults or not is analyzed through the actual attenuation value and the reasonable attenuation value of the corresponding optical path of the PON port, so that fault early warning is carried out, and then the positions of the faults are located through the discrete degree of the light receiving power of each ONU under the PON port, and the fault line is quickly segmented.
It should be noted that when each section of the link above the OBD is further analyzed to locate which section the fault specifically occurs, the optical attenuation of the link above the OBD cannot be located and determined only by the optical attenuation of the single OBD, but theoretically, the optical attenuation values of the link above the OBD are close to those of the optical cable and the optical path (with the same distance and section) in the same route, and whether the fault exists in the entire optical path corresponding to the PON port may be analyzed based on the theoretical attenuation value and the actual attenuation value, and the idea of locating the link above the OBD or the link below the OBD in the optical path based on the dispersion degree of the received optical power of each ONU may further locate which section of the link above the OBD the fault specifically occurs.
Firstly, acquiring an ideal light attenuation value and an actual light attenuation value of a certain section in a link above an OBD to determine whether the section has a fault; and then determining that the section has a fault or an upstream section of the section has a fault according to the light attenuation change conditions (light attenuation values, change trends, dispersion degrees and the like of each optical path) of a plurality of sections in the same route or the same optical cable as the section. By analogy, whether each section of the link above the OBD breaks down or not can be positioned.
In the above method for obtaining the ideal attenuation value of the optical path, the ideal attenuation value of each optical path can be obtained by the basic data (optical cable length, test attenuation value) and the optical path resource system during engineering delivery; the light attenuation change conditions of the links above the OBDs in the same route or the same optical cable can be obtained through the light attenuation historical values of the links obtained by the comprehensive test system.
The following describes embodiments of an apparatus for performing the passive optical network fault analysis method, and please refer to the embodiments of the passive optical network fault analysis method for details that are not disclosed in the passive optical network fault analysis apparatus.
Fig. 5 is a schematic structural diagram of a passive optical network fault analysis device according to an embodiment of the present application. As shown in fig. 5, the passive optical network fault analysis apparatus 500 includes at least the following parts.
A first obtaining unit 510, configured to obtain, in an optical path corresponding to a passive optical network PON port under an optical line terminal OLT, an insertion loss of a physical resource, an insertion loss of an optical cable, and an insertion loss of a connection point between the optical cable and the physical resource.
A reasonable attenuation value determining unit 520, configured to obtain a reasonable attenuation value of the optical path according to the insertion loss of the physical resource, the insertion loss of the optical cable, and the insertion loss of the splicing point;
a second obtaining unit 530, configured to obtain light emitting power of the PON port and light receiving power of a plurality of optical network units ONUs below the PON port.
And an actual attenuation determining unit 540, configured to obtain an actual attenuation value of the optical path according to the light emitting power of the PON port and the light receiving powers of the ONUs.
And a fault analysis unit 550, configured to analyze whether the optical path has a fault according to the actual attenuation value and the reasonable attenuation value.
An embodiment of the present application further provides an electronic device, including:
one or more processors;
a storage device for storing one or more programs, which when executed by the one or more processors, cause the electronic device to implement the passive optical network fault analysis method described above.
An embodiment of the present application further provides a computer-readable medium, on which a computer program is stored, where the computer program, when executed, implements the passive optical network fault analysis method described above.
Finally, it should be noted that: as will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A method for analyzing a fault of a passive optical network, the method comprising:
acquiring the insertion loss of physical resources, the insertion loss of an optical cable and the insertion loss of a junction point between the optical cable and the physical resources in an optical path corresponding to a Passive Optical Network (PON) port under an Optical Line Terminal (OLT);
obtaining a reasonable attenuation value of the optical path according to the insertion loss of the physical resource, the insertion loss of the optical cable and the insertion loss of the splicing point;
acquiring the luminous power of the PON port and the receiving power of a plurality of Optical Network Units (ONU) below the PON port;
obtaining an actual attenuation value of the optical path according to the luminous power of the PON port and the light receiving power of the plurality of ONUs;
and analyzing whether the optical path has faults or not according to the actual attenuation value and the reasonable attenuation value.
2. The method according to claim 1, wherein the physical resources include an optical splitter (OBD), a flange, and a quick connector;
obtaining a reasonable attenuation value of the optical path according to the insertion loss of the physical resource, the insertion loss of the optical cable and the insertion loss of the splicing point, wherein the reasonable attenuation value comprises the following steps:
and taking the insertion loss of the OBD, the insertion loss of the flange plate, the insertion loss of the quick connector, the insertion loss of the optical cable and the sum of the insertion losses of the splicing points as a reasonable attenuation value of the optical path.
3. A method of passive optical network fault analysis according to claim 2, wherein the insertion loss of the optical cable is the product of the length of the optical cable and the optical attenuation value per unit length, the length of the optical cable being obtained by time domain reflectometry.
4. The method according to claim 1, wherein obtaining the actual attenuation value of the optical path according to the light emitting power of the PON port and the light receiving power of the ONUs includes:
determining a maximum received optical power among the plurality of ONUs;
and taking the difference between the luminous power of the PON port and the maximum light receiving power of the plurality of ONUs as the actual attenuation value of the optical path.
5. The method according to claim 1, wherein the analyzing whether the optical path has a fault according to the actual loss value and the reasonable loss value comprises:
determining a difference between the actual decay value and the rational decay value;
if the difference value is larger than or equal to a preset first preset threshold value, determining that the optical path has a fault;
and if the difference value is smaller than the first preset threshold value, determining that the optical path has no fault.
6. The method of claim 1, further comprising:
if the optical path has a fault, determining the dispersion degree of the light receiving power of a plurality of ONUs under the PON port;
if the discrete degree is less than or equal to a preset second preset threshold value, determining that a main line of the optical path has a fault;
and if the discrete degree is greater than the second preset threshold value, determining that the end light path of the light path has a fault.
7. The method according to claim 6, wherein the determining the dispersion degree of the received optical power of the ONUs under the PON port comprises:
and taking the variance of the received optical power of a plurality of ONUs under the PON port as the discrete degree.
8. A passive optical network fault location device, the device comprising:
a first obtaining unit, configured to obtain, in an optical path corresponding to a passive optical network PON port in an optical line terminal OLT, an insertion loss of a physical resource, an insertion loss of an optical cable, and an insertion loss of a connection point between the optical cable and the physical resource;
the reasonable attenuation value determining unit is used for obtaining a reasonable attenuation value of the optical path according to the insertion loss of the physical resource, the insertion loss of the optical cable and the insertion loss of the splicing point;
a second obtaining unit, configured to obtain light emitting power of the PON port and light receiving power of a plurality of optical network units ONUs below the PON port;
an actual attenuation determining unit, configured to obtain an actual attenuation value of the optical path according to the light emitting power of the PON port and the light receiving powers of the ONUs;
and the fault analysis unit is used for analyzing whether the optical path has faults or not according to the actual attenuation value and the reasonable attenuation value.
9. An electronic device, comprising:
one or more processors;
storage means for storing one or more programs which, when executed by the one or more processors, cause the electronic device to carry out the method of any one of claims 1-7.
10. A computer-readable medium, on which a computer program is stored, characterized in that the computer program, when executed, implements the method according to any of claims 1-7.
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| CN115001581A (en) * | 2022-06-16 | 2022-09-02 | 中国联合网络通信集团有限公司 | Optical attenuation processing method and equipment of optical network unit and storage medium |
| CN115765867A (en) * | 2022-11-21 | 2023-03-07 | 中国联合网络通信集团有限公司 | Link detection method, device, equipment and storage medium |
| CN116094588A (en) * | 2023-01-04 | 2023-05-09 | 中国联合网络通信集团有限公司 | Light attenuation management method, device and storage medium |
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