Method for analyzing same route of transmission wavelength division network

Abstract

The invention discloses a same-route analysis method for a transmission wavelength division network. The method comprises the following steps: collecting equipment data; associating the optical path and the optical path routing data with the optical cable section and the optical cable data through the interoffice optical fiber data to form intermediate relation data; decomposing the bearing relationship between the star-shaped transmission network and the associated transmission segment and the optical cable to obtain the optical cable distribution of the overall wavelength division network, and forming a transmission network feature decision matrix and a transmission network feature tree classification graph; and constructing a same-route auditing rule according to the transmission network feature decision matrix and the transmission network feature tree classification graph, and performing same-route analysis according to the same-route auditing rule. According to the invention, automatic analysis and processing of the same route of the wavelength division network are realized, hidden dangers of the same route and hidden danger positions of the wavelength division link can be actively detected, the fault risk is effectively reduced, the analysis accuracy is improved, the time required for analysis and processing is reduced, the maintenance cost is reduced, and the working efficiency of maintenance personnel is improved.

Description

Technical Field

[0001] This invention belongs to the field of wavelength division network maintenance technology, specifically relating to a method for co-routing analysis in transmission wavelength division networks. Background Technology

[0002] Optical fiber is the physical foundation of modern network communication. Fixed networks using optical fiber as the medium not only serve as a comprehensive carrier network for mobile and broadband services but also provide end-to-end high-reliability, high-value services for high-quality government and enterprise leased lines and private network users. Typically, only services where the primary working path and backup protection path are physically separated can guarantee high availability. Due to the passive nature of optical fiber, physical optical fiber networks have long relied on manual data entry and maintenance. Continuous expansion and construction have led to an increasing likelihood of overlapping optical fiber pipeline resources, and a growing possibility of discrepancies between the physical and logical network correspondences. Although optical network services have robust logical link primary and backup path protection measures, the probability of service interruption due to fiber breakage will significantly increase if the primary and backup paths are on the same physical optical fiber. In fact, simultaneous primary and backup interruptions due to failures on the same physical optical fiber are common, all related to the lack of effective "automatic co-route detection" methods. Currently, wavelength division multiplexing (WDM) co-route analysis and location mostly rely on manual comparison of optical fibers based on the location of the fault after a failure occurs. This method is inefficient and inaccurate, and post-fault analysis and location cannot effectively prevent the risk of fiber breakage. Summary of the Invention

[0003] The purpose of this invention is to provide a co-routing analysis method for transmission wavelength division networks (WDM) to solve the aforementioned problems in co-routing analysis of WDM networks.

[0004] This invention is achieved through the following technical solution: The method for routing analysis in transmission wavelength division multiplexing (WDM) networks includes the following steps: Data collected from the equipment includes network data, fiber connection data between network elements, transmission segments of wavelength division multiplexing (WDM) optical paths, optical cable segments corresponding to optical paths, supporting facilities associated with optical cable segments, data of the computer room and central station to which the network element belongs, and relationship data between provincial trunk and municipal relay WDM network elements and ring / final-level subnets. Optical path and optical path routing data are associated with optical cable segment and optical cable data through inter-office fiber data to form intermediate relationship data; the carrying relationship between the star transmission network and associated transmission segments and optical cables is decomposed to obtain the optical cable distribution of the overall wavelength division network, forming a transmission network feature decision matrix and a transmission network feature tree classification diagram. Based on the transmission network feature decision matrix and the transmission network feature tree classification diagram, construct co-routing audit rules, and perform co-routing analysis based on the co-routing audit rules.

[0005] In some embodiments, the intermediate relationship data includes wavelength division ring basic data, wavelength division ring transmission segment and optical cable segment data, and wavelength division ring transmission segment and optical cable segment optical cable support facility data; the wavelength division ring basic data includes ring data, connection details data, audit group data, and audit scenario data; The ring data includes the primary key ID, ring unique identifier, ring name, ring type, province, city, network management name, subnet name, and network management ID. The connection details data includes the wavelength division ring primary key ID, ring unique identifier, transmission segment unique identifier, transmission segment name, transmission segment, multiplexing segment site relationship, working protection, segment site relationship, A-end network element station, Z-end network element station, A-end network element name, Z-end network element name, A-end network element DN, Z-end network element DN, A-end site ID, Z-end site ID, A-end network element management area, Z-end network element management area, segment direction, and network management ID; Audit group data includes wavelength division ring primary key ID, ring unique identifier, audit scenario group unique identifier, audit scenario type, audit scenario description, and network management ID; The audit scenario data includes wavelength division ring primary key ID, ring unique identifier, audit scenario group unique identifier, audit scenario type, multiplex section site relationship, section site relationship, outgoing site, transmission section unique identifier, network management ID, arrival site, and working protection. The data for the wavelength division ring transmission segment and optical cable segment includes the unique identifier of the transmission segment, the name of the optical path, the name of the optical cable segment, the ID of the optical cable segment, the length of the optical cable segment, and the optical cable to which it belongs; The data for the optical cable support facilities of the wavelength division ring transmission segment and optical cable segment include the unique identifier of the transmission segment, the ID of the optical cable segment to which it belongs, the code of the optical cable support facility, the name of the optical cable support facility, the ID of the optical cable support facility, the type of the optical cable support facility, the latitude and longitude of the GIS coordinates of the optical cable support facility.

[0006] In some embodiments, the transmission network feature decision matrix includes judgment logic for determining whether it is a resource transmission segment, an inter-station segment, a wavelength division ring, and whether the OMS segment is primary or backup.

[0007] In some embodiments, the transmission network feature tree classification diagram is a tree structure formed by transmission segment - resource transmission segment - inter-station segment - wavelength division ring - OMS segment - primary and backup; The transmission segment includes resource-sending segments and non-resource-sending segments. The resource-sending segments include intra-station segments and inter-station segments. The inter-station segments include wavelength division multiplexing (WDM) rings and non-WDM rings. The WDM rings include various OMS segments. The OMS segments include primary and backup segments.

[0008] In some embodiments, the co-routing audit rules are used for co-routing analysis of optical cable segments / optical cable support facilities in the inter-station segments through which the OMS primary resource transmission passes and the inter-station segments through which the OMS backup resource transmission passes on the wavelength division ring.

[0009] In some embodiments, the co-routing audit rules include co-routing audits between primary and backup transmission segments in the same multiplexing interval, and the co-routing determination rules are as follows: When the primary transmission segment and the backup transmission segment of the same ring and multiplexing interval have an intersection, it is determined that the optical cable segments have the same route under the current rules; when the optical cable segments do not have the same route, the optical cable support facilities are then checked to see if they have the same route.

[0010] In some embodiments, the co-route audit rules include co-route auditing between the starting position transmission segments on the OMS segments that originate from the same OTM station and arrive at different direction stations. The co-route determination rules are as follows: If the primary transmission segments of the OMS (Optical Service Management System) in different directions originating from the same OTM station on the same ring intersect with the optical cable segment set, and there is no backup OMS in the audit direction, it is determined that the optical cable segments have the same route under the current rules. Otherwise, if the backup transmission segments of the OMS in different directions originating from the primary OTM station on the same ring intersect with the optical cable segment set, it is determined that the optical cable segments have the same route under the current rules. When there is no same route for the optical cable segments, the optical cable support facilities are then audited to see if they have the same route.

[0011] In some embodiments, the co-routing audit rules include co-routing audits between primary transmission segments of all different multiplexing intervals within the same ring, and the co-routing determination rules are as follows: If the primary transmission segments of different multiplexing intervals in the same ring intersect with the optical cable segment sets, it is determined that the optical cable segments have the same route under the current rules. If the optical cable segments do not have the same route, the optical cable support facilities will be audited for the same route.

[0012] In some embodiments, based on the results of the co-route audit, combined with the latitude and longitude coordinates of the optical cable line and the GIS map, the locations of co-route lines are marked on the map.

[0013] In some embodiments, work orders are automatically generated and sent to maintenance personnel based on the results of wavelength division network routing analysis and location.

[0014] Compared with the prior art, the present invention has the following advantages and beneficial effects: This invention establishes a correlation between transmission data and cable data to form a transmission network feature decision matrix and a transmission network feature tree classification diagram. Based on this, it automatically analyzes co-routes in wavelength division multiplexing (WDM) networks using audit rules, and displays the co-routes on a map by combining the latitude and longitude coordinates of the optical cable lines, thus realizing the visualization of co-routes analysis.

[0015] This invention enables automated analysis and processing of co-routes in wavelength division multiplexing (WDM) networks. It can proactively detect potential co-routes in WDM links and their locations, effectively reducing fault risks, improving analysis accuracy, reducing analysis and processing time, lowering maintenance costs, and increasing the work efficiency of maintenance personnel. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a flowchart of the co-routing analysis method for transmission wavelength division multiplexing (WDM) networks according to an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram illustrating the association between transmitted data and cable data in an embodiment of the present invention.

[0019] Figure 3 This is a tree-like classification diagram of transmission network features according to an embodiment of the present invention.

[0020] Figure 4 This is a schematic diagram of the primary and backup transmission segments in the same multiplexed interval (OTM station-to-station) according to an embodiment of the present invention.

[0021] Figure 5 This is a schematic diagram of the starting position transmission segment on the OMS segment of an embodiment of the present invention, which originates from the same OTM station (station A) and arrives at stations in different directions (stations B, C, etc.).

[0022] Figure 6 This is a schematic diagram of the primary transmission segment for all different multiplexing intervals (OTM station-to-station) within the same ring according to an embodiment of the present invention.

[0023] Figure 7 This is a visual diagram illustrating the same-route analysis in an embodiment of the present invention. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this application clearer, specific embodiments of this application will be described in further detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely for explaining this application and not for limiting it. It should also be noted that, for ease of description, only the parts relevant to this application are shown in the drawings, not all of them. Before discussing exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe operations (or steps) as sequential processes, many of these operations can be performed in parallel, concurrently, or simultaneously. Furthermore, the order of the operations can be rearranged. The process can be terminated when its operation is completed, but may also have additional steps not included in the drawings. The process can correspond to a method, function, procedure, subroutine, subprogram, etc.

[0025] Research has revealed the following main problems in current routing analysis and location processing: 1) Maintenance personnel need to be highly familiar with the network-related equipment, configuration data, and network structure, placing high demands on their overall professional skills and resulting in significant training difficulties and maintenance costs; 2) Physical fiber optic networks have long relied entirely on manual data entry and maintenance. Currently, the only way to determine the existence of identical fiber optic support facilities is through pairwise comparisons between fiber optic cables. This approach is inefficient and time-consuming for analyzing and locating the entire wavelength division multiplexing (WDM) network, requiring continuous and tedious manual analysis based on data; 3) Balancing timeliness and accuracy in analysis is problematic. Communication networks, especially WDM transmission networks, are complex star network structures with different fiber connections... There are multiple optical cables carrying services in the network, making it extremely difficult for even experienced maintenance personnel to compare the same optical cables in a complex network; moreover, the current resources do not support the comparison of optical cable associations along the entire circuit route, which means that the optical paths of the line need to be manually verified one by one in daily work, which greatly increases the time cost of maintenance; 4) At present, some co-routing analysis methods do not combine the actual network characteristics, primary and backup routing characteristics, multiplex section characteristics, etc. to conduct co-routing audits, and do not conduct detailed audits from the perspective of a ring or a multiplex section interval, making it impossible to more accurately locate the location of co-routing, resulting in low quality of analysis results; 5) There is a lack of effective co-routing result presentation and management methods, and a lack of visual and intuitive analysis results.

[0026] This invention addresses the problems of the inability to automatically discover and locate co-routes in transmission wavelength division multiplexing (WDM) networks, and the difficulty of manual comparison after a fault occurs in passive optical cables when WDM network vulnerabilities are discovered. It proposes a co-routes analysis method for transmission WDM networks, which avoids the risk of simultaneous interruption of primary and backup paths when optical cables are cut or damaged by the cable by analyzing and locating co-routes. Furthermore, it proposes three precise audit rules covering current traditional WDM networks, enabling accurate analysis and judgment of co-routes, and allowing for the visualization of audit results.

[0027] The following terms will be used in the description of the embodiments of the present invention, and the explanations of the terms are as follows: Wavelength division ring: Represents the final subnet or the smallest ring structure topology in a wavelength division network.

[0028] OTM station: refers to the local stations at both ends of the OMS segment.

[0029] Reuse interval: Represents the interval between two OTM stations.

[0030] Reference Figure 1 In some embodiments of the present invention, the transmission wavelength division network co-routing analysis method includes the following steps: 1. Equipment data acquisition, including: Collect network data and inter-network fiber connection data (transmission segment); Collect data from the transmission segment of the wavelength division multiplexing optical path, the corresponding optical cable segment, the supporting facilities associated with the optical cable segment, and the data center station to which the network element belongs; Collect data on the relationship between provincial and municipal relay wavelet subnets and ring / final-level subnets.

[0031] 2. Data parsing and storage Considering that the collected data comes from equipment from different manufacturers, it is necessary to parse the collected data from different manufacturers according to the data field descriptions provided by the manufacturers and convert it into unified model data for storage; including transmission equipment data, transmission segment data, transmission subnet data, optical cable data, optical cable segment data, fiber core data, optical path data, and optical path-borne service data.

[0032] 3. Establish the association between transmitted data and cable data, including: 1) Reference Figure 2 The optical path, optical path route, local fiber optic cable segment and optical cable data are associated to form intermediate relationship data (i.e. audit data), as shown in Tables 2-7.

[0033] 2) The carrying relationship between the star-shaped transmission network and associated transmission segments and optical cables is decomposed to obtain the optical cable distribution of the overall wavelength division multiplexing (WDM) network, forming the transmission network feature decision matrix (see Table 1) and the transmission network feature tree classification diagram (see Table 2). Figure 3 ); Table 1. Transmission Network Feature Decision Matrix

[0034] The transmission network feature decision matrix is ​​similar to a process-driven process, where there are certain dependencies between the branch results of process nodes. For example, the result of branch node A is a prerequisite for branch node B.

[0035] 3) Store relational data; relational data tables include: a) Wavelength division ring basic data - ring, see Table 2; Table 2

[0036] b) Wavelength division ring basic data - connection details, see Table 3; Table 3

[0037] c) Wavelength division ring basic data - Audit team, see Table 4; Table 4

[0038] d) Wavelength division ring basic data - audit scenario, see Table 5; Table 5

[0039] e) Wavelength division ring transmission section and optical cable section, see Table 6; Table 6

[0040] f) Optical cable support facilities for wavelength division ring transmission section and optical cable section, see Table 7; Table 7

[0041] 4. Synchronous route audit 1) Audit targets include: {Inter-station segments through which OMS (Optical Mode Multiplexing) resources are transmitted on the wavelength division multiplexing ring}; {Inter-station segments through which OMS backup passes on the wavelength division ring}.

[0042] 2) Audit scope includes: optical cable sections / optical cable support facilities.

[0043] 3) Synchronization routing audit rules, including: a. Audit Rules 1 Reference Figure 4 OMS primary and backup co-routing audit, that is, co-routing audit between the primary and backup transmission segments in the same multiplexing interval (OTM station-to-station); Relationship: Same ring, same reused section (OTM station to station); Conditions: A backup route exists, and auditing is performed between the primary and backup routes; Criteria for determining co-routes: If the set of optical cable segments through which the primary transmission segment passes and the set of optical cable segments through which the backup transmission segment passes intersect in the same ring and multiplexing interval (OTM station-to-station), it is determined that the optical cable segments are co-routes under the current rules; otherwise, it is determined that the optical cable segments are not co-routes. When the optical cable segments are not co-routes, the same method is used to audit whether the optical cable support facilities are co-routes.

[0044] b. Audit Rule 2 Reference Figure 5 The same route audit is performed between the primary and backup outgoing locations of different multiplexing intervals (between OTM stations), that is, the same route audit is performed between the starting positions of the transmission segments on the OMS segment that start from the same OTM station (station A) and arrive at stations in different directions (stations B, C...). Relationship: Same ring, same OTM station exit; Conditions: Auditing between primary and secondary OMS routes in different directions; auditing between backup routes when backup routes are configured in different OMS routes simultaneously. Criteria for determining the same route: If the primary transmission segments of the OMS (Optical Service Management System) in different directions originating from the same OTM (Optical Service Management) within the same ring and OTM (Optical Service Management) intersect with the optical cable segment set, and the audited OMS has no backup, then the optical cable segment is determined to be on the same route under the current rules. Otherwise, if the backup transmission segments of the OMS in different directions originating from the same OTM within the same ring and OTM (Optical Service Management) intersect with the optical cable segment set, then the optical cable segment is determined to be on the same route under the current rules; otherwise, the optical cable segment is determined not to have a same route. When the optical cable segment does not have a same route, the same method is used to audit whether the optical cable support facilities have a same route.

[0045] c. Audit Rule 3 Reference Figure 6 Audit of the primary co-route of all different multiplexing sections (OTM stations) within the same ring, that is, audit of the co-route between the primary transmission segments of all different multiplexing sections (OTM stations) within the same ring; Relationship: Within the same ring, but in different reuse sections (between OTM stations); Condition: Primary transport segment; Criteria for determining co-routes: If the primary transmission segments of different multiplexing intervals (OTM stations) in the same ring have an intersection with the optical cable segment sets, it is determined that the optical cable segments have co-routes under the current rules; otherwise, it is determined that the optical cable segments do not have co-routes. When the optical cable segments do not have co-routes, the co-routes of the optical cable support facilities are checked again based on the same method.

[0046] 5. Visual presentation of routing analysis results The results of the co-route audit are graphically presented using the latitude and longitude coordinates of the optical cable lines and a GIS map. Different colors are used to mark the locations of co-route instances, thus visualizing the co-route analysis. Figure 7 The green, red, and purple lines in the diagram indicate this.

[0047] 6. Processing of routing analysis results For audit results related to the same route, work orders are dispatched to network maintenance personnel for processing.

[0048] Based on the results of co-routing analysis and location in the WDM network, work orders are automatically generated and sent to maintenance personnel. Work orders are used for process control, and the latest results are displayed synchronously for co-routing processing and rectification, forming a closed-loop management system.

[0049] The method of this invention realizes full-process IT automation, ensuring the efficiency and accuracy of co-routing detection; it can proactively detect co-routing risks and their locations in wavelength division multiplexing (WDM) links, effectively reducing the risk of failure, improving the accuracy of analysis, reducing the time required for analysis and processing, lowering maintenance costs, and improving the work efficiency of maintenance personnel.

[0050] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A method of analysis of a transport wavelength division network, characterised by, The method comprises the following steps: Collecting device data, including network element data, inter-network element fiber data, and transmission segment of wavelength division optical path, optical path corresponding optical cable segment, support facilities associated with optical cable segment, data of network element belonging to local station, and relationship data of provincial trunk and municipal trunk and relay wavelength division network element and ring / terminal subnetwork; Associating optical path and optical path routing data with inter-local optical fiber data, optical cable segment and optical cable data to form intermediate relationship data; decomposing star-shaped transmission network and associated transmission segment and optical cable bearing relationship to obtain optical cable distribution of overall wavelength division network, forming transmission network characteristic decision matrix and transmission network characteristic tree classification chart; Constructing same route auditing rule according to transmission network characteristic decision matrix and transmission network characteristic tree classification chart, and performing same route analysis according to the same route auditing rule.

2. The transport wavelength division network trace analysis method of claim 1, wherein, The intermediate relationship data comprises wavelength division ring basic data, wavelength division ring transmission segment and optical cable segment data, and wavelength division ring transmission segment and optical cable segment optical cable support facility data; the wavelength division ring basic data comprises ring data, connection detail data, auditing group data, and auditing scene data; The ring data comprises primary key ID, ring unique identifier, ring name, ring type, province, city, network management name, subnetwork name, and network management ID; The connection detail data comprises wavelength division ring primary key ID, ring unique identifier, transmission segment unique identifier, transmission segment name, transmission segment, multiplex segment site relationship, working protection, segment site relationship, A-end network element local station, Z-end network element local station, A-end network element name, Z-end network element name, A-end network element DN, Z-end network element DN, A-end site ID, Z-end site ID, A-end network element management area, Z-end network element management area, segment direction, and network management ID; The auditing group data comprises wavelength division ring primary key ID, ring unique identifier, auditing scene group unique identifier, auditing scene type, auditing scene description, and network management ID; The auditing scene data comprises wavelength division ring primary key ID, ring unique identifier, auditing scene group unique identifier, auditing scene type, multiplex segment site relationship, segment site relationship, outgoing site, transmission segment unique identifier, network management ID, arrival site, and working protection; The wavelength division ring transmission segment and optical cable segment data comprises transmission segment unique identifier, optical path name, optical cable segment name, optical cable segment ID, optical cable segment length, and belonging optical cable; The wavelength division ring transmission segment and optical cable segment optical cable support facility data comprises transmission segment unique identifier, belonging optical cable segment ID, optical cable support facility code, optical cable support facility name, optical cable support facility ID, optical cable support facility type, optical cable support facility GIS coordinate latitude, and optical cable support facility GIS coordinate longitude.

3. The transport wavelength division network trace analysis method of claim 1, wherein, The transmission network characteristic decision matrix comprises judgment logic for judging whether it is a transmission segment, whether it is an inter-site segment, whether it is a wavelength division ring, and whether it is an OMS segment primary or backup.

4. The transport wavelength division network trace analysis method of claim 1, wherein, The transmission network characteristic tree classification chart is a tree structure formed by transmission segment-transmission segment-inter-site segment-wavelength division ring-OMS segment-primary and backup. The transmission segment includes resource-sending segments and non-resource-sending segments. The resource-sending segments include intra-station segments and inter-station segments. The inter-station segments include wavelength division multiplexing (WDM) rings and non-WDM rings. The WDM rings include various OMS segments. The OMS segments include primary and backup segments.

5. The transport wavelength division network trace analysis method of claim 4, wherein, The co-route audit rules are used for co-route analysis of the optical cable segments / optical cable support facilities of the inter-station segments through which the OMS primary and backup optical cables pass on the wavelength division ring.

6. The transport wavelength division network trace analysis method of claim 5, wherein, The co-routing audit rules include co-routing audits between primary and backup transmission segments in the same multiplexing interval. The co-routing determination rules are as follows: When the primary transmission segment and the backup transmission segment of the same ring and multiplexing interval have an intersection, it is determined that the optical cable segments have the same route under the current rules; when the optical cable segments do not have the same route, the optical cable support facilities are then checked to see if they have the same route.

7. The transport wavelength division network trace analysis method of claim 5, wherein, The co-route audit rules include co-route audits between OMS segments originating from the same OTM station and arriving at different destination stations in different directions. The co-route determination rules are as follows: If the primary transmission segments of the OMS (Optical Service Management System) in different directions originating from the same OTM station on the same ring intersect with the optical cable segment set, and there is no backup OMS in the audit direction, it is determined that the optical cable segments have the same route under the current rules. Otherwise, if the backup transmission segments of the OMS in different directions originating from the primary OTM station on the same ring intersect with the optical cable segment set, it is determined that the optical cable segments have the same route under the current rules. When there is no same route for the optical cable segments, the optical cable support facilities are then audited to see if they have the same route.

8. The transport wavelength division network trace analysis method of claim 5, wherein, The co-routing audit rules include co-routing audits between primary transmission segments of all different multiplexing intervals within the same ring. The co-routing determination rules are as follows: If the primary transmission segments of different multiplexing intervals in the same ring intersect with the optical cable segment sets, it is determined that the optical cable segments have the same route under the current rules. If the optical cable segments do not have the same route, the optical cable support facilities will be audited for the same route.

9. The transport wavelength division network trace analysis method of claim 1, wherein, Based on the audit results of the same route, and combined with the latitude and longitude coordinates of the optical cable line and the GIS map, the locations of the co-route are marked on the map.

10. The transport wavelength division network trace analysis method of claim 1, wherein, Based on the results of wavelength division network routing analysis and location, work orders are automatically generated and sent to maintenance personnel.

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