An optical decay node positioning method, device and storage medium of an ODN network
By calculating the optical attenuation value and line segment length in the ODN network, and using the matrix expression of the relative optical attenuation value and loss ratio, combined with histogram analysis, efficient location of optical attenuation nodes in the ODN network is achieved, solving the problem of low location efficiency in traditional methods.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA TELECOM CORP LTD
- Filing Date
- 2023-07-25
- Publication Date
- 2026-06-23
AI Technical Summary
In existing technologies, the efficiency of locating optical decay nodes in ODN networks is low. Traditional methods rely on on-site measurements, which results in a large workload and makes it difficult to quickly and accurately locate optical decay nodes.
By obtaining the optical attenuation value and line segment length of each full line in the ODN network, calculating the relative optical attenuation value and relative loss ratio, using matrix expressions to determine the optical attenuation abnormal line segments, and combining histogram analysis to analyze the optical attenuation abnormal ports, efficient location of optical attenuation nodes can be achieved.
It improves the efficiency of optical attenuation node location, reduces the workload of on-site measurements, enables rapid and accurate location of optical attenuation nodes, and enhances the efficiency of network planning.
Smart Images
Figure CN117560597B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of transmission networks, and more specifically, to a method, apparatus, and storage medium for locating optical attenuation nodes in an ODN network. Background Technology
[0002] An optical distribution network (ODN) is a type of optical fiber network that serves as the backbone of various network services. It transmits and receives signals through optical transceivers and PON equipment, and transmits optical signals through optical fibers and splitters.
[0003] However, optical signal attenuation occurs during transmission in ODN networks. The degree of optical signal attenuation affects the service quality for users. Therefore, optical attenuation mitigation and network planning and construction have become important aspects of improving optical network quality. How to quickly identify the nodes with high optical network attenuation and their locations is one of the issues that various operators are focusing on researching.
[0004] Traditional methods for determining optical decay mainly involve on-site measurements using instruments such as OTDRs, which compare target values to identify optical decay nodes. However, the workload of on-site measurements is substantial, resulting in low efficiency in locating optical decay nodes. Summary of the Invention
[0005] This application provides a method, apparatus, and storage medium for locating optical decay nodes in an ODN network, aiming to improve the efficiency of determining the location of optical decay nodes.
[0006] In a first aspect, embodiments of this application provide a method for locating optical attenuation nodes in an ODN network, the method comprising:
[0007] Obtain the total optical attenuation value of each full line in the current ODN network and the length of each of the multiple line segments in each full line. The multiple line segments of each full line include the line between the OLT equipment and the optical distribution box, the line segment between the optical distribution box and the first-level optical splitter, the line segment between the first-level optical splitter and the second-level optical splitter, and the line segment from the second-level optical splitter to the user side.
[0008] In each of the multiple full lines corresponding to a secondary optical splitter, the relative optical attenuation value of each full line corresponding to the secondary optical splitter is determined based on the full line with the smallest total optical attenuation value. The relative optical attenuation value is used to characterize the optical attenuation of each full line corresponding to the secondary optical splitter in the line segment from the secondary optical splitter to the user side.
[0009] The cable optical attenuation value of each full line is determined based on the full-length optical attenuation value corresponding to each full line and the preset loss values of the first-level and second-level optical splitters corresponding to each full line.
[0010] Based on the optical attenuation value of each full line cable and the length of each line segment in each full line, the relative loss ratios of the line segments between the OLT equipment and the optical distribution box, the line segments between the optical distribution box and the first-level splitter, and the line segments between the first-level splitter and the second-level splitter are determined. The relative loss ratios are used to characterize the optical attenuation of each line segment in each full line.
[0011] Based on the optical attenuation of the line segments between the OLT equipment and the first-level splitter, the line segments between the first-level splitter and the second-level splitter, and the line segments from the second-level splitter to the user side of each full line, the line segments with abnormal optical attenuation in each full line are located.
[0012] Optionally, based on the optical attenuation value of the cable in each full line and the lengths of the various line segments in each full line, the relative loss ratios of the line segments between the OLT equipment and the optical distribution box, the line segments between the optical distribution box and the first-stage splitter, and the line segments between the first-stage splitter and the second-stage splitter in each full line are determined, including:
[0013] For each primary optical splitter, a first reference line segment is determined, which is the line segment between the primary optical splitter and the secondary optical splitter.
[0014] Based on the optical attenuation value of each full line and the length of each of the multiple line segments in each full line, the relative loss ratio of each full line output by each first-level splitter between the first-level splitter and the second-level splitter is determined to be that of the first reference line segment.
[0015] For each optical distribution box, a second reference line segment is determined. The second reference line is the line segment between the optical distribution box and the first-stage optical splitter.
[0016] Based on the optical attenuation value of each full line and the length of each of the multiple line segments in each full line, the relative loss ratio of each full line output from each optical distribution box between each optical distribution box and the first-level splitter is determined to be that of the second reference line segment.
[0017] Optionally, based on the optical attenuation value of each full line and the lengths of the various line segments within each full line, the relative loss ratio of each full line output by each first-stage splitter between the first-stage splitter and the first reference line segment is determined, including:
[0018] The lengths of each segment of the line in each line are used as the first matrix;
[0019] The loss of each segment of each line within a unit distance is used as the second matrix;
[0020] The matrix expression for each line is determined based on the first matrix, the second matrix, and the optical attenuation value of the cable for each line.
[0021] Based on the ratio of the matrix expression of each line to the matrix expression corresponding to the first reference line, the relative loss ratio of each full line output by each first-stage splitter between the first-stage splitter and the second-stage splitter is determined.
[0022] Optionally, based on the optical attenuation value of each full line and the corresponding lengths of the multiple line segments in each full line, the relative loss ratio of the line segment between each optical distribution box and the first-level splitter for each full line output from each optical distribution box is determined to be that of the second reference line segment, including:
[0023] The lengths of each segment of the line in each line are used as the first matrix;
[0024] The loss of each segment of each line within a unit distance is used as the second matrix;
[0025] The matrix expression for each line is determined based on the first matrix, the second matrix, and the optical attenuation value of the cable for each line.
[0026] Based on the ratio of the matrix expression of each line to the matrix expression corresponding to the second reference line, the relative loss ratio of each full line output from each optical distribution box to the line segment of the second reference line segment between each optical distribution box and the first-level splitter is determined.
[0027] Optionally, the method further includes:
[0028] Determine if there are any abnormalities in each primary or secondary beam splitter.
[0029] Optionally, determine if there is an anomaly in each secondary beam splitter, including:
[0030] Obtain multiple sets of optical attenuation values for the entire route at different times corresponding to multiple ports of each secondary optical splitter, and plot the histograms corresponding to the multiple ports of each secondary optical splitter.
[0031] Based on the histograms corresponding to the multiple ports of each secondary optical splitter, the abnormal ports and normal ports among the multiple ports of each secondary optical splitter are determined.
[0032] Optionally, after determining the abnormal and normal ports among the multiple ports of each secondary optical splitter, the method further includes:
[0033] For any two normal ports of each secondary optical splitter, a hypothesis testing method is used to determine whether there is an anomaly in the two normal ports.
[0034] Optionally, determine if there is an anomaly in each first-stage splitter, including:
[0035] For any first-level optical splitter, if all connected second-level optical splitters are normal, obtain multiple sets of optical attenuation values of all full routes at different times corresponding to multiple ports of each first-level optical splitter, and draw histograms corresponding to multiple ports of each first-level optical splitter.
[0036] Based on the histograms corresponding to the multiple ports of each first-stage optical splitter, the abnormal ports and normal ports among the multiple ports of each first-stage optical splitter are determined.
[0037] Secondly, embodiments of this application provide an optical attenuation node location device for an ODN network, the device comprising:
[0038] The acquisition module is used to acquire the total optical attenuation value of each full line in the current ODN network and the length of each of the multiple line segments in each full line. The multiple line segments of each full line include the line between the OLT equipment and the optical distribution box, the line segment between the optical distribution box and the first-level optical splitter, the line segment between the first-level optical splitter and the second-level optical splitter, and the line segment from the second-level optical splitter to the user side.
[0039] The relative optical attenuation value determination module is used to determine the relative optical attenuation value of each full line corresponding to the secondary optical splitter based on the full line with the smallest total optical attenuation value. The relative optical attenuation value is used to characterize the optical attenuation of each of the multiple full lines of the secondary optical splitter in the line segment from the secondary optical splitter to the user side.
[0040] The cable optical attenuation value determination module is used to determine the cable optical attenuation value of each full line based on the full-length optical attenuation value corresponding to each full line and the preset loss values of the first-level splitter and the second-level splitter corresponding to each full line.
[0041] The relative loss ratio determination module is used to determine the relative loss ratio of each line segment in each full line, namely, the line segment between the OLT equipment and the optical distribution box, the line segment between the optical distribution box and the first-level splitter, and the line segment between the first-level splitter and the second-level splitter, based on the optical attenuation value of the cable in each full line and the length of each line segment in each full line. The relative loss ratio is used to characterize the optical attenuation of each line segment in each full line.
[0042] The optical attenuation location module is used to locate the optical attenuation abnormal segments in each full line based on the optical attenuation status of the line segments between the OLT equipment and the first-level optical splitter, the line segments between the first-level and second-level optical splitters, and the line segments from the second-level optical splitter to the user side.
[0043] Thirdly, embodiments of this application provide a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the optical attenuation node localization method of the ODN network described in the first aspect of the embodiments.
[0044] Beneficial effects:
[0045] This method first obtains the total optical attenuation value of each full line in the current ODN network and the length of each segment within each full line. Then, it determines the optical attenuation of the segment from the secondary splitter to the user side for each full line. Specifically, among the multiple full lines corresponding to each secondary splitter, the relative optical attenuation value of each full line corresponding to that secondary splitter is determined based on the full line with the lowest total optical attenuation value. Next, it determines the relative loss ratios of the segment between the OLT equipment and the optical distribution box, the segment between the optical distribution box and the primary splitter, and the segment between the primary and secondary splitters for each full line. Thus, based on the optical attenuation of the segments between the OLT equipment and the primary splitter, the segments between the primary and secondary splitters, and the segments from the secondary splitter to the user side, the method can locate the segments with abnormal optical attenuation in each full line. Compared to traditional methods of determining optical attenuation through on-site measurement, this method can improve the efficiency of locating optical attenuation nodes. Attached Figure Description
[0046] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0047] Figure 1This is a flowchart of the steps of an ODN network optical attenuation node localization method proposed in an embodiment of this application;
[0048] Figure 2 This is a schematic diagram of an ODN network proposed in an embodiment of this application;
[0049] Figure 3 This is a schematic diagram of a histogram provided in an embodiment of this application;
[0050] Figure 4 This is a functional block diagram of an overdue payment collection system provided in one embodiment of this application. Detailed Implementation
[0051] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0052] Reference Figure 1 The diagram illustrates a flowchart of a method for locating optical attenuation nodes in an ODN network according to an embodiment of this application. The method may specifically include the following steps:
[0053] S101: Obtain the total optical attenuation value of each full line in the current ODN network and the length of each of the multiple line segments in each full line.
[0054] Reference Figure 2 This diagram illustrates an ODN network provided in an embodiment of this application. The ODN network includes an OLT device. The output ports of the OLT device are connected to multiple optical distribution boxes via lines. The output ports of each optical distribution box are connected to multiple primary optical splitters via lines. Each primary optical splitter is connected to multiple secondary optical splitters via lines. Each secondary optical splitter is connected to multiple user sides via lines. A complete line from the ODN to the user side can be considered as a full route. Each full route has multiple segments, including the line between the OLT device and the optical distribution box, the line segment between the optical distribution box and the primary optical splitter, the line segment between the primary and secondary optical splitters, and the line segment from the secondary optical splitter to the user side. Multiple full routes may share common line segments in the paths between the secondary optical splitters.
[0055] In one feasible implementation, information such as the length of each of the multiple segments of each full line, the location of the primary optical splitter, and the secondary optical splitter can be pre-stored in the resource management system.
[0056] The total optical attenuation value of each line can be directly read in the network management system of the current ODN network. The total optical attenuation value of each line = the total optical attenuation value of multiple line segments + the optical attenuation value of the first-level splitter + the optical attenuation value of the second-level splitter.
[0057] S102: Among the multiple full lines corresponding to each secondary optical splitter, the relative optical attenuation value of each full line corresponding to the secondary optical splitter is determined according to the full line with the smallest total optical attenuation value. The relative optical attenuation value is used to characterize the optical attenuation of each full line corresponding to the secondary optical splitter in the line segment from the secondary optical splitter to the user side.
[0058] A secondary optical splitter has one input and multiple outputs. Therefore, multiple full lines output from the same secondary optical splitter output port have the same line path before that secondary optical splitter. For example, for secondary optical splitter 1, its multiple full lines 1-n are:
[0059] Line 1: OLT equipment—Optical distribution box 1—Primary splitter 1—Secondary splitter 1—User side 1;
[0060] Line 2: OLT equipment—Optical distribution box 1—Primary splitter 1—Secondary splitter 1—User side 2;
[0061] ...
[0062] The entire line n: OLT equipment—Optical distribution box 1—Primary optical splitter 1—Secondary optical splitter 1—User side n.
[0063] In each secondary optical splitter, the optical attenuation value before the secondary optical splitter is the same. However, because the length of the line segment from the secondary optical splitter to each user side is different, the optical attenuation value of the entire line is different.
[0064] Among the multiple full lines corresponding to each secondary optical splitter, the full line with the smallest total optical attenuation value is selected. Then, the relative optical attenuation value of each of the other full lines corresponding to the secondary optical splitter is determined relative to the full line with the smallest total optical attenuation value. The relative optical attenuation value can characterize the optical attenuation of each full line corresponding to the secondary optical splitter in the line segment from the secondary optical splitter to the user side.
[0065] For example, for a second-level optical splitter 1, which outputs n full lines, the full line 1 corresponding to port 1 of the second-level optical splitter has the smallest total optical attenuation value. Therefore, the relative optical attenuation value of full line 2 corresponding to port 2 of the second-level optical splitter = the total optical attenuation value of full line 2 - the total optical attenuation value of full line 1.
[0066] Optical attenuation is unavoidable in ODN networks. By taking the second-level optical splitter as a unit, calculating the relative value of the total optical attenuation value of multiple full lines corresponding to the same second-level optical splitter with the full line with the smallest total optical attenuation value, the optical attenuation situation of the line segment from the second-level optical splitter to the user side in multiple full lines of the second-level optical splitter can be displayed.
[0067] S103: Determine the cable optical attenuation value of each full line based on the full-length optical attenuation value corresponding to each full line and the preset loss values of the first-level splitter and the second-level splitter corresponding to each full line.
[0068] When determining the optical attenuation of a line segment, a preset loss value can be determined for the optical attenuation of the primary and secondary optical splitters. For example, the optical attenuation loss of a new optical splitter of the same model can be assigned to the preset loss value. For instance, when testing the input and output ends of a new normal optical splitter, the optical attenuation loss can be determined as: input signal strength - signal strength of any output port.
[0069] The optical attenuation value of each cable line is calculated as follows: total optical attenuation value of the entire line - preset loss value of the first-stage splitter - preset loss value of the second-stage splitter.
[0070] S104: Based on the optical attenuation value of each full line cable and the lengths of the multiple line segments in each full line, determine the relative loss ratios of the line segments between the OLT equipment and the optical distribution box, the line segments between the optical distribution box and the first-level splitter, and the line segments between the first-level splitter and the second-level splitter for each full line.
[0071] The relative loss ratio can characterize the optical attenuation of each segment of each full line.
[0072] When determining the optical attenuation of the line segment between the first-stage optical splitter and the second-stage optical splitter, firstly, for each first-stage optical splitter, a first reference line segment is determined. The first reference line is the line segment between the first-stage optical splitter and the second-stage optical splitter. For example, the line segment between the first-stage optical splitter and the second-stage optical splitter with the smallest total optical attenuation value among all the full lines under the first-stage optical splitter can be used as the first reference line.
[0073] Then, based on the optical attenuation value of each full line and the length of each of the multiple line segments in each full line, the relative loss ratio of each full line output by each first-level splitter between the first-level splitter and the second-level splitter is determined to be that of the first reference line segment.
[0074] Specifically, the lengths of each segment of each line are used as the first matrix; the loss of each segment of each line per unit distance is used as the second matrix; the matrix expression for each line is determined based on the first matrix, the second matrix, and the optical attenuation value of the cable for each full line; and the relative loss ratio of each full line output by each first-stage splitter between the first-stage splitter and the second-stage splitter is determined based on the ratio of the matrix expression of each line to the matrix expression of the first reference line.
[0075] For example, there are 1-m lines under the first-level optical splitter. The length of the line segment from the OLT equipment to the optical distribution box is denoted as L01, and the loss per unit distance is denoted as K01; the length of the line segment from the optical distribution box to the first-level optical splitter is denoted as L11, and the loss per unit distance is denoted as K11; the length of the line segment between the first-level and second-level optical splitters is denoted as L21, and the loss per unit distance is denoted as K21; the length of the line segment from the second-level optical splitter to the user side is denoted as E1, and the loss per unit distance is denoted as K. E1 .
[0076] The matrix expression for the entire line 1 is:
[0077]
[0078] Wherein, LOS1 is the total optical attenuation value of the entire line 1; LOS 一级 The preset loss value for the first-stage optical splitter; LOS 二级 This is the preset loss value for the secondary beam splitter.
[0079] For a single-stage optical splitter, there is only one input. Therefore, the length L01 and the loss K01 per unit distance of the line segment between the OLT equipment and the optical distribution box for each of the m full lines under the single-stage optical splitter, and the length L11 and the loss K11 per unit distance of the line segment between the optical distribution box and the single-stage optical splitter are the same. The relative loss value of the line segment from the second-stage optical splitter to the user side for each new path has been calculated. Therefore, the relative loss ratio of the line segment between the single-stage optical splitter and the second-stage optical splitter for all full lines under the same single-stage optical splitter to the first reference line segment can be determined.
[0080] Similarly, the relative loss ratio of all full-path segments under each optical distribution box to the second reference line segment between each optical distribution box and the first-level splitter can be calculated.
[0081] First, a second reference line segment is determined for each optical distribution box. The second reference line is the line segment between the optical distribution box and the first-stage splitter. For example, the line segment between the optical distribution box and the first-stage splitter with the smallest total optical attenuation value among all full lines under the optical distribution box can be selected as the second reference line. Then, based on the cable optical attenuation value of each full line and the lengths of the multiple line segments in each full line, the relative loss ratio between the line segment between each optical distribution box and the first-stage splitter and the second reference line segment of each full line output from each optical distribution box is determined.
[0082] Specifically, the lengths of each segment of each line are used as a first matrix; the losses of each segment of each line within a unit distance are used as a second matrix; the matrix expression of each line is determined based on the first matrix, the second matrix, and the optical attenuation value of the cable for each full line; and the relative loss ratio of each full line output from each optical distribution box to the line segment of the second reference line is determined based on the ratio of the matrix expression of each line to the matrix expression corresponding to the second reference line.
[0083] This allows us to obtain the relative loss ratio of each segment of the entire line, which reflects the optical attenuation loss of each segment.
[0084] S105: Based on the optical attenuation of the line segments between the OLT equipment and the first-level splitter, the line segments between the first-level splitter and the second-level splitter, and the line segments from the second-level splitter to the user side of each full line, locate the line segments with abnormal optical attenuation in each full line.
[0085] By calculating the optical attenuation, an optical attenuation threshold can be set. If the relative optical attenuation value of any full line segment from the secondary splitter to the user side is greater than the optical attenuation threshold, it indicates that the optical attenuation anomaly of the full line is located in the segment from the secondary splitter to the user side.
[0086] In this embodiment, in addition to locating the optical attenuation of the line, the optical attenuation of the first-level and second-level optical splitters in the current ODN network can also be determined.
[0087] For example, for each secondary optical splitter, multiple sets of optical attenuation values for the entire route corresponding to multiple ports of each secondary optical splitter at different times are obtained; based on the multiple sets of optical attenuation values for the entire route corresponding to multiple ports of the secondary optical splitter at different times, abnormal ports of the secondary optical splitter are determined. Specifically, multiple sets of optical attenuation values for the entire route corresponding to multiple ports of each secondary optical splitter at different times are obtained, for example, 50 sets of optical attenuation value data, and histograms corresponding to the multiple ports of each secondary optical splitter are plotted; based on the histograms corresponding to the multiple ports of each secondary optical splitter, abnormal ports and normal ports among the multiple ports of each secondary optical splitter are determined.
[0088] Reference Figure 3 The diagram shows a schematic of the histogram provided in the embodiment of this application. The histogram of the normal port output is shown in (A), which is a normal distribution. (B)(C)(D)(E)(F) are the histograms corresponding to the abnormal ports.
[0089] After identifying the abnormal and normal ports among the multiple ports of each secondary optical splitter, for any two normal ports of each secondary optical splitter, a hypothesis testing method is used to determine whether the two normal ports are abnormal. This is because even if the histograms of the two ports are normal, there may be a deviation in the output of the two ports. If the deviation is large, then the two ports are also considered abnormal ports.
[0090] The hypothesis testing process can be as follows:
[0091] Assumption: but
[0092] If n1 = n2 = n, then the sample degrees of freedom γ1 = γ2 = n-1
[0093] α = 0.05
[0094] Calculate the variances of S1 and S2:
[0095] Calculate the statistic:
[0096] Determine the significance level α, consult the F-test critical value (F2) table, P(F>F2) = α
[0097] Referring to the F-test critical value (F2) table, P(F>F2) = α
[0098] Judgment: F and F 0.05 (n-1, n-1). Determine whether F is within the rejection region.
[0099] Similarly, for any first-level optical splitter, if all connected second-level optical splitters are normal, obtain multiple sets of optical attenuation values for all full routes at different times corresponding to multiple ports of each first-level optical splitter, and draw histograms corresponding to the multiple ports of each first-level optical splitter; based on the histograms corresponding to the multiple ports of each first-level optical splitter, determine the abnormal ports and normal ports among the multiple ports of each first-level optical splitter.
[0100] Reference Figure 3 This diagram illustrates a functional block diagram of an optical attenuation node location device for an ODN network according to an embodiment of this application. The device includes:
[0101] The acquisition module 100 is used to acquire the total optical attenuation value of each full line in the current ODN network and the length of each of the multiple line segments in each full line. The multiple line segments of each full line include the line between the OLT equipment and the optical distribution box, the line segment between the optical distribution box and the first-level optical splitter, the line segment between the first-level optical splitter and the second-level optical splitter, and the line segment from the second-level optical splitter to the user side.
[0102] The relative optical attenuation value determination module 200 is used to determine the relative optical attenuation value of each full line corresponding to the secondary optical splitter in the multiple full lines corresponding to each secondary optical splitter, based on the full line with the smallest total optical attenuation value. The relative optical attenuation value is used to characterize the optical attenuation of each of the multiple full lines of the secondary optical splitter in the line segment from the secondary optical splitter to the user side.
[0103] The cable optical attenuation value determination module 300 is used to determine the cable optical attenuation value of each full line based on the full-length optical attenuation value corresponding to each full line and the preset loss values of the first-level splitter and the second-level splitter corresponding to each full line.
[0104] The relative loss ratio determination module 400 is used to determine the relative loss ratio of each line segment in each full line, namely, the line segment between the OLT equipment and the optical distribution box, the line segment between the optical distribution box and the first-level splitter, and the line segment between the first-level splitter and the second-level splitter, based on the optical attenuation value of the cable in each full line and the length of each line segment in each full line. The relative loss ratio is used to characterize the optical attenuation of each line segment in each full line.
[0105] The optical attenuation positioning module 500 is used to locate the optical attenuation abnormal line segments in each full line based on the optical attenuation status of the line segments between the OLT equipment and the first-level optical splitter, the line segments between the first-level optical splitter and the second-level optical splitter, and the line segments from the second-level optical splitter to the user side.
[0106] This application also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the optical attenuation node location method of the ODN network as described in the embodiments.
[0107] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.
[0108] Those skilled in the art will understand that embodiments of this application can be provided as methods, apparatus, or computer program products. Therefore, embodiments of this application can take the form of entirely hardware embodiments, entirely software embodiments, or embodiments combining software and hardware aspects. Furthermore, embodiments of this application can take the form of computer program products implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.
[0109] This application describes embodiments with reference to flowchart illustrations and / or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of this application. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing terminal device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal device, generate instructions for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.
[0110] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing terminal device to operate in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.
[0111] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal equipment, causing a series of operational steps to be performed on the computer or other programmable terminal equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable terminal equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1The steps of the function specified in one or more boxes.
[0112] Although preferred embodiments of the present application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present application.
[0113] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.
[0114] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.
Claims
1. A method for locating optical attenuation nodes in an ODN network, characterized in that, The method includes: Obtain the total optical attenuation value of each full line in the current ODN network and the length of each of the multiple line segments in each full line. The multiple line segments of each full line include the line between the OLT equipment and the optical distribution box, the line segment between the optical distribution box and the first-level optical splitter, the line segment between the first-level optical splitter and the second-level optical splitter, and the line segment from the second-level optical splitter to the user side. In each of the multiple full lines corresponding to a secondary optical splitter, the relative optical attenuation value of each full line corresponding to the secondary optical splitter is determined based on the full line with the smallest total optical attenuation value. The relative optical attenuation value is used to characterize the optical attenuation of each full line corresponding to the secondary optical splitter in the line segment from the secondary optical splitter to the user side. The cable optical attenuation value of each full line is determined based on the full-length optical attenuation value corresponding to each full line and the preset loss values of the first-level and second-level optical splitters corresponding to each full line. Based on the optical attenuation value of each full line cable and the length of each line segment in each full line, the relative loss ratios of the line segments between the OLT equipment and the optical distribution box, the line segments between the optical distribution box and the first-level splitter, and the line segments between the first-level splitter and the second-level splitter are determined. The relative loss ratios are used to characterize the optical attenuation of each line segment in each full line. Based on the optical attenuation of the line segments between the OLT equipment and the first-level splitter, the line segments between the first-level splitter and the second-level splitter, and the line segments from the second-level splitter to the user side of each full line, the line segments with abnormal optical attenuation in each full line are located.
2. The method according to claim 1, characterized in that, Based on the optical attenuation value of each full line cable and the corresponding lengths of each line segment within each full line, the relative loss ratios of the line segments between the OLT equipment and the optical distribution box, between the optical distribution box and the primary optical splitter, and between the primary and secondary optical splitters of each full line are determined, including: For each primary optical splitter, a first reference line segment is determined, which is the line segment between the primary optical splitter and the secondary optical splitter. Based on the optical attenuation value of each full line and the length of each of the multiple line segments in each full line, the relative loss ratio of each full line output by each first-level splitter between the first-level splitter and the second-level splitter is determined to be that of the first reference line segment. For each optical distribution box, a second reference line segment is determined. The second reference line is the line segment between the optical distribution box and the first-stage optical splitter. Based on the optical attenuation value of each full line and the length of each of the multiple line segments in each full line, the relative loss ratio of each full line output from each optical distribution box between each optical distribution box and the first-level splitter is determined to be that of the second reference line segment.
3. The method according to claim 2, characterized in that, Based on the optical attenuation value of each full line and the corresponding lengths of each line segment within each full line, the relative loss ratio of each full line output by each first-stage splitter between the first-stage splitter and the second-stage splitter is determined to be that of the first reference line segment. This includes: The lengths of each segment of the line in each line are used as the first matrix; The loss of each segment of each line within a unit distance is used as the second matrix; The matrix expression for each line is determined based on the first matrix, the second matrix, and the optical attenuation value of the cable for each line. Based on the ratio of the matrix expression of each line to the matrix expression corresponding to the first reference line, the relative loss ratio of each full line output by each first-stage splitter between the first-stage splitter and the second-stage splitter is determined.
4. The method according to claim 2, characterized in that, Based on the optical attenuation value of each full line and the corresponding lengths of each line segment within each full line, the relative loss ratio of the line segment between each optical distribution box and the first-level splitter for each full line output from each optical distribution box is determined, including: The lengths of each segment of the line in each line are used as the first matrix; The loss of each segment of each line within a unit distance is used as the second matrix; The matrix expression for each line is determined based on the first matrix, the second matrix, and the optical attenuation value of the cable for each line. Based on the ratio of the matrix expression of each line to the matrix expression corresponding to the second reference line, the relative loss ratio of each full line output from each optical distribution box to the line segment of the second reference line segment between each optical distribution box and the first-level splitter is determined.
5. The method according to claim 1, characterized in that, The method further includes: Determine if there are any abnormalities in each primary or secondary beam splitter.
6. The method according to claim 5, characterized in that, Determine if any abnormalities exist in each secondary beam splitter, including: Obtain multiple sets of optical attenuation values for the entire route at different times corresponding to multiple ports of each secondary optical splitter, and plot the histograms corresponding to the multiple ports of each secondary optical splitter. Based on the histograms corresponding to the multiple ports of each secondary optical splitter, the abnormal ports and normal ports among the multiple ports of each secondary optical splitter are determined.
7. The method according to claim 6, characterized in that, After identifying the abnormal and normal ports among the multiple ports of each secondary optical splitter, the method further includes: For any two normal ports of each secondary optical splitter, a hypothesis testing method is used to determine whether there is an anomaly in the two normal ports.
8. The method according to claim 5, characterized in that, Determine if any abnormalities exist in each primary optical splitter, including: For any first-level optical splitter, if all connected second-level optical splitters are normal, obtain multiple sets of optical attenuation values of all full routes at different times corresponding to multiple ports of each first-level optical splitter, and draw histograms corresponding to multiple ports of each first-level optical splitter. Based on the histograms corresponding to the multiple ports of each first-stage optical splitter, the abnormal ports and normal ports among the multiple ports of each first-stage optical splitter are determined.
9. A device for locating optical attenuation nodes in an ODN network, characterized in that, The device includes: The acquisition module is used to acquire the total optical attenuation value of each full line in the current ODN network and the length of each of the multiple line segments in each full line. The multiple line segments of each full line include the line between the OLT equipment and the optical distribution box, the line segment between the optical distribution box and the first-level optical splitter, the line segment between the first-level optical splitter and the second-level optical splitter, and the line segment from the second-level optical splitter to the user side. The relative optical attenuation value determination module is used to determine the relative optical attenuation value of each full line corresponding to the secondary optical splitter based on the full line with the smallest total optical attenuation value. The relative optical attenuation value is used to characterize the optical attenuation of each of the multiple full lines of the secondary optical splitter in the line segment from the secondary optical splitter to the user side. The cable optical attenuation value determination module is used to determine the cable optical attenuation value of each full line based on the full-length optical attenuation value corresponding to each full line and the preset loss values of the first-level splitter and the second-level splitter corresponding to each full line. The relative loss ratio determination module is used to determine the relative loss ratio of each line segment in each full line, namely, the line segment between the OLT equipment and the optical distribution box, the line segment between the optical distribution box and the first-level splitter, and the line segment between the first-level splitter and the second-level splitter, based on the optical attenuation value of the cable in each full line and the length of each line segment in each full line. The relative loss ratio is used to characterize the optical attenuation of each line segment in each full line. The optical attenuation location module is used to locate the optical attenuation abnormal segments in each full line based on the optical attenuation status of the line segments between the OLT equipment and the first-level optical splitter, the line segments between the first-level and second-level optical splitters, and the line segments from the second-level optical splitter to the user side.
10. A computer-readable storage medium, characterized in that, A computer program is stored on the computer-readable storage medium, which, when executed by a processor, implements the optical attenuation node location method for an ODN network as described in any one of claims 1 to 8.