Passive optical network fault analysis method, device, equipment and storage medium

Abstract

The present application relates to the field of optical communication technology, and discloses a method, device, equipment and storage medium for analyzing faults in a passive optical network. The method comprises: obtaining the insertion loss of physical resources, the insertion loss of optical cables and the insertion loss of the connection point between the optical cable and the physical resources in the optical path corresponding to the passive optical network PON port under the optical line terminal OLT; obtaining the reasonable attenuation value of the optical path according to the insertion loss of the physical resources, the insertion loss of the optical cable and the insertion loss of the connection point; obtaining the luminous power of the PON port and the received optical power of multiple optical network units ONU under the PON port; obtaining the actual attenuation value of the optical path according to the luminous power of the PON port and the received optical power of the multiple ONUs; analyzing whether the optical path has a fault according to the actual attenuation value and the reasonable attenuation value. The present application can quickly determine whether the optical path has a fault by measuring the reasonable attenuation value and the actual attenuation value of the optical path corresponding to the PON port.

Description

Technical Field

[0001] The present application relates to the field of optical communication technology, and in particular to a passive optical network fault analysis method, device, equipment and storage medium. Background Art

[0002] Optical communication is a communication method that uses light waves as carriers. Currently, optical communication has been widely used in signal transmission of various communication systems. FTTX has become the main method of broadband access. As one of the best technical solutions for achieving FTTX, PON technology has been widely used in the access layer coverage of metropolitan area networks of various operators. In the xPON network of passive optical network, the common networking system consists of an EMS, OLT, optical distribution network (ODN) and several ONUs: OLT, as a central office device, manages, connects and aggregates multiple ONU devices through the ODN network with PON ports as units; ONU devices accept the management of OLT devices to access user services, thereby realizing functions such as data services and configuration management; ODN networks mainly consist of trunk optical fibers, multiple branch optical fibers, and splitters or other connectors connecting trunk optical fibers and branch optical fibers. The xPON network is a "point-to-multipoint" topology: multiple ONUs are managed and maintained with the corresponding PON port of xPONOLT as the basic unit.

[0003] For the normal operation of the xPON network, the optical path quality must be guaranteed first. The ODN full-path loss should be within the receiving sensitivity of the ONU and OLT. When the ODN full-path loss exceeds the receiving sensitivity of the ONU or OLT, the ONU cannot be activated and communication cannot be established. Therefore, the common method to ensure the quality of the optical path from ONU to OLT in the FTTX PON network is to formulate a fixed optical path loss reference value based on the receiving sensitivity of the optical module of the ONU or OLT, and require and control the ODN full-path loss not to exceed the reference value during construction, commissioning and maintenance.

[0004] However, in the actual network environment, the optical path length, optical path connection and number of active connections, and OBD splitting ratio of the ODN between OLT and ONU are different. The use of a fixed optical path loss reference value actually masks the loss anomalies and line quality problems in the line, which directly affects the operator's ability to detect poor line quality problems as early as possible, eliminate transmission risks, and threaten the stable operation of the FTTX communication system.

[0005] Related optical path quality monitoring and analysis relies on the deployment of terminal fiber gratings and local-end fiber analyzers, which is costly. In addition, the segmented positioning of optical attenuation problems or the alarm information reported by network management and equipment cannot timely detect optical path faults that are in the process of degradation but have not yet affected the business. Or, the line quality is determined by relying on a fixed optical attenuation threshold set based on the receiving sensitivity of the optical device, which cannot timely detect the hidden problems caused by line degradation. Summary of the invention

[0006] The embodiments of the present application provide a passive optical network fault analysis method, device, equipment and storage medium, which can at least to a certain extent solve the problems of difficult and inefficient fault location. By measuring the reasonable attenuation value and actual attenuation value of the ODN optical path under the PON port, it can be quickly determined whether there is a fault in the ODN optical path.

[0007] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.

[0008] According to a first aspect of an embodiment of the present application, a passive optical network fault analysis method is provided, the method comprising:

[0009] Obtaining the insertion loss of the physical resource, the insertion loss of the optical cable, and the insertion loss of the connection point between the optical cable and the physical resource in the optical path corresponding to the passive optical network PON port under the optical line terminal OLT;

[0010] 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 connection point;

[0011] Obtaining the light emitting power of the PON port and the light receiving power of multiple optical network units ONU under the PON port;

[0012] Obtaining an actual attenuation value of the optical path according to the light emitting power of the PON port and the light receiving power of the plurality of ONUs;

[0013] According to the actual attenuation value and the reasonable attenuation value, it is analyzed whether the optical path has a fault.

[0014] In some embodiments of the present application, based on the above solution, the physical resources include an optical splitter OBD, a flange, and a quick connector;

[0015] The obtaining of 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 connection point comprises:

[0016] The sum of the insertion loss of the OBD, the insertion loss of the flange, the insertion loss of the quick connector, the insertion loss of the optical cable and the insertion loss of the connection point is taken as the reasonable attenuation value of the optical path.

[0017] In some embodiments of the present application, based on the above solution, 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, and the length of the optical cable is obtained by time domain reflection measurement.

[0018] In some embodiments of the present application, based on the above solution, 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 multiple ONUs includes:

[0019] Determine the maximum optical receiving power among the multiple ONUs;

[0020] The difference between the light emitting power of the PON port and the maximum light receiving power of the multiple ONUs is used as the actual attenuation value of the optical path.

[0021] In some embodiments of the present application, based on the above solution, analyzing whether the optical path has a fault according to the actual attenuation value and the reasonable attenuation value includes:

[0022] Determine the difference between the actual attenuation value and the reasonable attenuation value;

[0023] If the difference is greater than or equal to a preset first threshold, it is determined that there is a fault in the optical path;

[0024] If the difference is smaller than the first preset threshold, it is determined that there is no fault in the optical path.

[0025] In some embodiments of the present application, based on the above solution, the method further includes:

[0026] If there is a fault in the optical path, determining the discrete degree of the received optical power of the multiple ONUs under the PON port;

[0027] If the discrete degree is less than or equal to a preset second preset threshold, it is determined that a trunk line of the optical path fails;

[0028] If the discrete degree is greater than the second preset threshold, it is determined that a terminal optical path of the optical path has a fault.

[0029] In some embodiments of the present application, based on the above solution, determining the discrete degree of the received optical power of multiple ONUs under the PON port includes:

[0030] The variance of the received optical powers of the multiple ONUs under the PON port is used as the discrete degree.

[0031] According to a second aspect of an embodiment of the present application, a passive optical network fault locating device is provided, the device comprising:

[0032] A first acquisition unit is used to acquire the insertion loss of the physical resource, the insertion loss of the optical cable, and the insertion loss of the connection point between the optical cable and the physical resource in the optical path corresponding to the passive optical network PON port under the optical line terminal OLT;

[0033] A reasonable attenuation value determination unit, used 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 connection point;

[0034] A second acquisition unit is used to acquire the light emitting power of the PON port and the light receiving power of multiple optical network units ONU under the PON port;

[0035] An actual loss determination unit, configured to obtain an actual loss value of the optical path according to the light emitting power of the PON port and the light receiving power of the plurality of ONUs;

[0036] A fault analysis unit is used to analyze whether there is a fault in the optical path according to the actual attenuation value and the reasonable attenuation value.

[0037] According to a third aspect of an embodiment of the present application, there is provided an electronic device, including:

[0038] one or more processors;

[0039] A storage device is used to store one or more programs, and when the one or more programs are executed by the one or more processors, the electronic device implements the method described in the first aspect above.

[0040] According to a fourth aspect of an embodiment of the present application, a computer-readable medium is provided, on which a computer program is stored. When the computer program is executed, the method described in the first aspect above is implemented.

[0041] The embodiment of the present application can quickly determine whether there is a fault in the ODN optical path by measuring the reasonable attenuation value and the actual attenuation value of the optical path under the PON port, which can be used as a basis for determining line abnormalities and organizing line rectification to ensure stable operation of the optical network.

[0042] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0044] Figure 1 A schematic diagram of a PON network architecture provided in an embodiment of the present application.

[0045] Figure 2 Flowchart of a passive optical network fault analysis method provided in an embodiment of the present application

[0046] Figure 3 A schematic diagram of the networking architecture of an ODN network provided in an embodiment of the present application.

[0047] Figure 4 A schematic diagram of another ODN network architecture provided in an embodiment of the present application.

[0048] Figure 5 A schematic diagram of the structure of a passive optical network fault analysis device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0050] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0051] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities may be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0052] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps can be decomposed, and some operations / steps can be combined or partially combined, so the actual execution order may change according to actual conditions.

[0053] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the feature. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0054] Figure 1 A schematic diagram of a PON network architecture provided in an embodiment of the present application. The embodiment of the present application can be operated on Figure 1 In the network architecture shown, the PON network includes: EMS 110, OLT 120, ODN 130, ONU 140, among which,

[0055] EMS 110 is used for configuration, management and maintenance of OLT 120 and PON network. EMS network management maintains and manages historical information of OLT 120 and ONU 140 as well as related alarm and notification messages. It can also determine and locate specific abnormal information based on related alarm and notification messages.

[0056] OLT120 manages and controls ONU140, completes registration and authentication of ONU140 under normal optical path quality conditions, and completes data forwarding;

[0057] The ODN 130 is used to connect different numbers of ONUs 140 under the OLT 120, and serves as a direct physical connection channel between the OLT 120 and the ONU 140. The ODN 130 is composed of multiple sections of 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.

[0058] ONU140 is used to serve as the terminal device of home users. When the optical path quality is normal, it completes registration and uplink / downlink forwarding of data under the control of OLT.

[0059] Figure 2 A flowchart of a passive optical network fault analysis method provided in an embodiment of the present application. Figure 2 As shown, the method includes the following steps.

[0060] Step 210: Obtain the insertion loss of the physical resource, the insertion loss of the optical cable, and the insertion loss of the connection point between the optical cable and the physical resource in the optical path corresponding to the passive optical network PON port under the optical line terminal OLT.

[0061] In a specific implementation, the specific information of the optical path corresponding to the PON port can be obtained from a resource system storing information of each network node of the optical network based on key information such as the port number corresponding to the PON port under the OLT and the OBD number in the optical path, including OBD splitting ratio, number of optical path sections, number of contacts, etc.

[0062] Step 220: 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 connection point.

[0063] According to the loss values ​​of each physical resource, optical cable and connection point (optical fiber connection point, active connection point) in the optical path, the reasonable attenuation value of the entire optical path can be calculated.

[0064] Step 230: Obtain the light emitting power of the PON port and the light receiving power of multiple optical network units ONU under the PON port.

[0065] In a specific implementation, the light emitting power of the PON port and the light receiving power of each ONU can be obtained through the EMS network management system.

[0066] Step 240: Obtain 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 multiple ONUs.

[0067] Figure 3 A schematic diagram of the networking architecture of an ODN network provided in an embodiment of the present application is shown in FIG. Figure 3 As shown in the figure, OBD is the gathering point of users under a single PON port in the PON network. The link above OBD, namely the trunk optical path, is a single fiber core; the optical path below OBD is divided into multiple fiber cores, namely multiple terminal optical paths, which are respectively connected to each ONU user, usually a terminal distribution optical cable or a single-core butterfly optical cable entering the home. Therefore, the actual attenuation value of a link from the PON port to a certain ONU in the optical path is the sum of the actual attenuation value of the trunk optical path above OBD and the actual attenuation value of the terminal optical path below OBD corresponding to the ONU. The optical attenuation value of the link can be obtained through the light emitting power of the PON port and the receiving light power of the ONU.

[0068] Since the ONU plays the role of the terminal device of the home user, different ONUs are placed in different homes or community environments. Therefore, the actual optical attenuation of the terminal optical paths corresponding to different ONUs is different, that is, the actual attenuation values ​​of the links from the same PON port to different ONUs are different.

[0069] In a 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.

[0070] Step 250: Analyze whether there is a fault in the optical path based on the actual attenuation value and the reasonable attenuation value.

[0071] The embodiment of the present application can quickly determine whether there is a fault in the optical path by measuring the reasonable attenuation value and the actual attenuation value of the optical path corresponding to the PON port. It does not rely on the deployment of local and terminal instrument equipment, but relies on the existing network management and resource system data for analysis. It can be implemented at a low cost and can be used as a basis for judging line abnormalities and organizing line rectification, thereby improving network robustness.

[0072] Figure 4 A schematic diagram of another ODN network architecture provided in an embodiment of the present application is shown in FIG. Figure 4 As shown, the ODN network includes intra-office optical cables between network devices in the intra-office computer room, trunk optical cables connecting the intra-office computer room network devices and the optical cross-connection box, optical splitters (OBDs) in the optical cross-connection box, distribution optical cables connecting the optical cross-connection box and the optical fiber distribution box, quick connectors in the optical fiber distribution box, butterfly optical cables connecting the optical fiber distribution box and the user end, and the ONU at the user end. Optical cables of different sections are connected through flanges or quick connectors.

[0073] Combination Figure 4 The network architecture shown, in some embodiments of the present application, based on the above solution, the physical resources include an optical splitter OBD, a flange, and a quick connector;

[0074] According to the insertion loss of physical resources, the insertion loss of optical cables and the insertion loss of connection points, the reasonable attenuation value of the optical path is obtained, including:

[0075] The sum of the OBD insertion loss, flange insertion loss, quick connector insertion loss, optical cable insertion loss and connection point insertion loss is taken as the reasonable attenuation value of the optical path.

[0076] In a specific implementation, the patch cord, quick connector and optical cable are connected by fusion splicing or flange coupling. The number of optical path connection points can be obtained through the optical cable maintenance connection record and the optical path resource system. The reasonable attenuation value of the optical path can be calculated using the following formula.

[0077] Reasonable attenuation value = number of splicing points * unit insertion loss of splicing points + number of flanges * unit insertion loss of flanges + number of quick connectors * unit insertion loss of quick connectors + optical distance * unit attenuation of optical path + insertion loss of optical splitter

[0078] The following table shows the insertion loss of different access devices:

[0079] Access device Insertion loss Splitter (splitting ratio) Insertion loss Welding point 0.1dB 1:2 3.5dB Flange 0.2dB 1:4 7dB Cold junction 0.3dB 1:8 10.3dB Quick Connectors 0.3dB 1:16 13.6dB Optical Cable 0.35dB / KM 1:32 16.5dB 1:64 20.2dB

[0080] As shown in the table above, the insertion loss corresponding to the splitters with different splitting ratios is different. This application calculates the corresponding reasonable attenuation value of each optical path through the actual physical resources corresponding to each optical path, fully considering the differences in reasonable attenuation values ​​of the optical paths caused by using different lengths of optical cables, different numbers of connection points, and splitters with different splitting ratios in different optical paths, and avoiding the use of a unified optical attenuation threshold for fault analysis for different optical paths.

[0081] In some embodiments of the present application, based on the above solution, the insertion loss of the optical cable is the product of the length of the optical cable and the optical attenuation per unit length, and the length of the optical cable is obtained by time domain reflection measurement.

[0082] In specific implementation, the length of the optical cable can be measured by an optical time domain reflectometer, also known as an optical fiber analyzer. Its working principle is the backscattering principle of light. The backscattering of optical fiber is caused by Rayleigh scattering and Fresnel reflection. Fresnel reflection is caused by the change of refractive index and generally occurs at the connection point, the butt joint and the end face of the optical fiber. Backscattering is caused by the unevenness of the medium. A part of the scattered light will be transmitted back to the sending end in the opposite direction of the optical path. The optical time domain reflectometer uses the principle that the intensity of the backscattered light in the optical fiber has a certain regularity for measurement.

[0083] In some embodiments of the present application, based on the above solution, the actual attenuation value of the optical path is obtained according to the light emitting power of the PON port and the light receiving power of multiple ONUs, including:

[0084] Determine the maximum optical receiving power among multiple ONUs;

[0085] The difference between the luminous power of the PON port and the maximum received light power of multiple ONUs is taken as the actual attenuation value of the optical path.

[0086] As mentioned above, there are differences in the optical attenuation values ​​of the 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 under 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 larger optical attenuation values ​​of other links are caused by the environment where the corresponding terminal optical paths are located, so as to approximately eliminate the differences in the optical attenuation values ​​of the terminal optical paths of each user.

[0087] In some embodiments of the present application, based on the above solution, analyzing whether there is a fault in the optical path according to the actual attenuation value and the reasonable attenuation value includes:

[0088] Determine the difference between the actual attenuation value and the reasonable attenuation value;

[0089] If the difference is greater than or equal to a preset first threshold, it is determined that there is a fault in the optical path;

[0090] If the difference is less than the first preset threshold, it is determined that there is no fault in the optical path.

[0091] Based on actual maintenance experience, a first preset threshold is set as a fault tolerance space. When the actual attenuation value of a certain optical path deviates from the reasonable attenuation value by a large amount, it indicates that a certain access device in the optical path fails.

[0092] In some embodiments of the present application, based on the above solution, the method further includes:

[0093] If there is a fault in the optical path, determine the dispersion of the received optical power of multiple ONUs under the PON port;

[0094] If the discrete degree is less than or equal to a preset second preset threshold, it is determined that a trunk line of the optical path fails;

[0095] If the degree of dispersion is greater than a second preset threshold, it is determined that a fault exists in the terminal optical path of the optical path.

[0096] Combination Figure 4 As well as the above analysis, for the link from the same PON port to different ONUs, the trunk optical path above OBD is the same; the terminal optical path below OBD is different for different ONUs. In order to locate whether the fault occurs in the trunk optical path above OBD or the terminal optical path below OBD, this application analyzes the received optical power values ​​of all ONUs under the PON port corresponding to the optical path with the fault, and determines the discrete degree of the ONU received optical power value.

[0097] When the degree of dispersion of the optical power values ​​of all ONUs under the PON port is low, the received optical power value data of each ONU fluctuates slightly, that is, the optical attenuation value of the link from the same PON port to different ONUs fluctuates slightly, indicating that there are common problems in different links from the PON port to each ONU, that is, there is a high possibility that the actual attenuation value of the optical path exceeds the reasonable attenuation value due to problems in the trunk optical path. It is judged that the fault is located in the section above OBD, and the fault of the trunk optical path causes the received optical power of all subordinate ONUs to be affected.

[0098] When the optical power values ​​of all ONUs under the PON port are highly discrete, the received optical power value data of each ONU fluctuates greatly, that is, the optical attenuation values ​​of the links from the same PON port to different ONUs fluctuate greatly, indicating 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. It is judged that the fault is located in the section below the OBD and is caused by a fault in a terminal optical path.

[0099] In specific implementation, the degree of dispersion of the received optical power of each ONU can be described by using the range, quartile difference, variance, standard deviation, coefficient of variation, etc. The range is also called the full range, which is the difference between the maximum and minimum values ​​in a set of data; the interquartile range refers to the difference between the third quartile and the first quartile, also called the inner range or interquartile range.

[0100] In actual applications, the links above OBD are maintained by some engineers, and the links below OBD are maintained by another group of engineers. This application can locate the line fault above or below OBD, which can realize rapid segmentation of faults, accurately determine the maintenance section, clarify the responsible maintenance engineer, reduce the invalid circulation of maintenance work orders, and improve the rectification efficiency.

[0101] In some embodiments of the present application, based on the above solution, determining the discrete degree of the received optical power of multiple ONUs under the PON port includes:

[0102] The variance of the received optical power of multiple ONUs under the PON port is used as the discrete degree.

[0103] The present application first analyzes whether there is a fault in the optical path through the actual attenuation value and reasonable attenuation value of the optical path corresponding to the PON port to provide a fault warning, and then locates the location of the fault through the discrete degree of the received optical power of each ONU under the PON port, thereby realizing rapid segmentation of the faulty line.

[0104] It should be noted that when further analyzing each section of the link above OBD to locate the specific section where the fault occurs, it is impossible to locate and determine it by relying solely on the optical attenuation of a single link above OBD. However, in theory, the optical attenuation values ​​of the optical paths (same distance and sections) with the same optical cable and route are similar. Based on the above analysis based on the theoretical attenuation value and the actual attenuation value to determine whether there is a fault in the entire optical path corresponding to the PON port, and based on the discrete degree of the received optical power of each ONU, the idea of ​​locating the fault in the link above OBD or the link below OBD in the optical path can be used to further locate the specific section of the link above OBD where the fault occurs.

[0105] First, the ideal optical attenuation value and actual optical attenuation value of a certain section in the OBD link are obtained to determine whether the section has a fault; then, the optical attenuation changes of multiple sections in the same route or the same optical cable as the section (optical attenuation value of each optical path, change trend, discrete degree, etc.) are used to determine whether the section has a fault or the upstream section of the section has a fault. By analogy, it is possible to locate whether each section of the OBD link has a fault.

[0106] Among them, as the method of obtaining the ideal attenuation value of the above-mentioned optical path, the ideal optical attenuation value of each section of the optical path can be obtained by relying on the basic data (optical cable length, test optical attenuation value) at the time of project delivery and the optical path resource system; the optical attenuation changes of multiple OBD links in the same route or the same optical cable can be obtained through the optical attenuation historical values ​​of multiple links obtained by the comprehensive test system.

[0107] The following introduces an embodiment of a device for executing the above passive optical network fault analysis method. For details not disclosed in the passive optical network fault analysis device, please refer to the embodiment of the above passive optical network fault analysis method.

[0108] Figure 5 The present invention provides a schematic diagram of a passive optical network fault analysis device. Figure 5 As shown, the passive optical network fault analysis device 500 includes at least the following parts.

[0109] The first acquisition unit 510 is used to acquire the insertion loss of the physical resource, the insertion loss of the optical cable, and the insertion loss of the connection point between the optical cable and the physical resource in the optical path corresponding to the passive optical network PON port under the optical line terminal OLT.

[0110] A reasonable attenuation value determination 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 connection point;

[0111] The second acquisition unit 530 is used to acquire the light emitting power of the PON port and the light receiving power of multiple optical network units ONU under the PON port.

[0112] The actual loss determination unit 540 is used to obtain the actual loss value of the optical path according to the light emitting power of the PON port and the light receiving power of multiple ONUs.

[0113] The fault analysis unit 550 is used to analyze whether there is a fault in the optical path according to the actual attenuation value and the reasonable attenuation value.

[0114] The present application also provides an electronic device, including:

[0115] one or more processors;

[0116] The storage device is used to store one or more programs. When the one or more programs are executed by the one or more processors, the electronic device implements the passive optical network fault analysis method described above.

[0117] The embodiment of the present application further provides a computer-readable medium on which a computer program is stored. When the computer program is executed, the above-mentioned passive optical network fault analysis method is implemented.

[0118] Finally, it should be noted that: those skilled in the art should understand that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, optical storage, etc.) containing computer-usable program code.

[0119] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0120] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0121] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A passive optical network fault analysis method, characterized in that: The method comprises: Obtaining the insertion loss of the physical resource, the insertion loss of the optical cable, and the insertion loss of the connection point between the optical cable and the physical resource in the optical path corresponding to the passive optical network PON port under the 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 connection point; Obtaining the light emitting power of the PON port and the light receiving power of multiple optical network units ONU under the PON port; Obtaining an actual attenuation value of the optical path according to the light emitting power of the PON port and the light receiving power of the plurality of ONUs; Analyzing whether the optical path has a fault according to the actual attenuation value and the reasonable attenuation value; If there is a fault in the optical path, determining the discrete degree of the received optical power of the multiple ONUs under the PON port; If the discrete degree is less than or equal to a preset second preset threshold, it is determined that a trunk optical path of the optical path fails; wherein the trunk optical path represents a link between the PON port and an optical splitter OBD for aggregating multiple ONUs; If the discrete degree is greater than the second preset threshold, it is determined that a terminal optical path of the optical path has a fault; wherein the terminal optical path represents a link between the OBD and the plurality of ONUs.

2. The passive optical network fault analysis method according to claim 1, characterized in that: The physical resources include an optical splitter OBD, a flange, and a quick connector; The obtaining of 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 connection point comprises: The sum of the insertion loss of the OBD, the insertion loss of the flange, the insertion loss of the quick connector, the insertion loss of the optical cable and the insertion loss of the connection point is taken as the reasonable attenuation value of the optical path.

3. The passive optical network fault analysis method according to claim 2, characterized in that: The insertion loss of the optical cable is the product of the length of the optical cable and the optical attenuation per unit length, and the length of the optical cable is obtained by time domain reflection measurement.

4. The passive optical network fault analysis method according to claim 1, characterized in that: The obtaining, according to the light emitting power of the PON port and the light receiving power of the plurality of ONUs, an actual attenuation value of the optical path comprises: Determine the maximum optical receiving power among the multiple ONUs; The difference between the light emitting power of the PON port and the maximum light receiving power of the multiple ONUs is used as the actual attenuation value of the optical path.

5. The passive optical network fault analysis method according to claim 1, characterized in that: The analyzing whether the optical path has a fault according to the actual attenuation value and the reasonable attenuation value includes: Determine the difference between the actual attenuation value and the reasonable attenuation value; If the difference is greater than or equal to a preset first threshold, it is determined that there is a fault in the optical path; If the difference is smaller than the first preset threshold, it is determined that there is no fault in the optical path.

6. The passive optical network fault analysis method according to claim 1, characterized in that: The determining of the discrete degree of the received optical power of the plurality of ONUs under the PON port includes: The variance of the received optical powers of the multiple ONUs under the PON port is used as the discrete degree.

7. A passive optical network fault location device, characterized in that: The device comprises: A first acquisition unit is used to acquire the insertion loss of the physical resource, the insertion loss of the optical cable, and the insertion loss of the connection point between the optical cable and the physical resource in the optical path corresponding to the passive optical network PON port under the optical line terminal OLT; A reasonable attenuation value determination unit, used 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 connection point; A second acquisition unit is used to acquire the light emitting power of the PON port and the light receiving power of multiple optical network units ONU under the PON port; An actual loss determination unit, configured to obtain an actual loss value of the optical path according to the light emitting power of the PON port and the light receiving power of the plurality of ONUs; A fault analysis unit, used for analyzing whether there is a fault in the optical path according to the actual attenuation value and the reasonable attenuation value; If there is a fault in the optical path, determining the discrete degree of the received optical power of the multiple ONUs under the PON port; If the discrete degree is less than or equal to a preset second preset threshold, it is determined that a trunk optical path of the optical path fails; wherein the trunk optical path represents a link between the PON port and an optical splitter OBD for aggregating multiple ONUs; If the discrete degree is greater than the second preset threshold, it is determined that a terminal optical path of the optical path has a fault; wherein the terminal optical path represents a link between the OBD and the plurality of ONUs.

8. An electronic device, characterized in that: include: one or more processors; A storage device, used to store one or more programs, when the one or more programs are executed by the one or more processors, enables the electronic device to implement the method as described in any one of claims 1-6.

9. A computer readable medium having a computer program stored thereon, characterized in that: When the computer program is executed, the method according to any one of claims 1 to 6 is implemented.

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