Passive optical asset whole life cycle management method and system fusing multi-dimensional information

Abstract

The application relates to a passive optical asset whole life cycle management method and system fusing multi-dimensional information, which establishes multi-dimensional information records of the passive optical asset taking unified coding as a primary key, integrating geographical positions, network topologies and use states, automatically synchronizes the use state in response to the state flow of an operation and maintenance work order, obtains the operation state of active equipment corresponding to the passive optical asset to verify the connection and occupation state of the passive optical path, and corrects the use state and the connection relationship, maintains the record in the whole life cycle from entry to scrap, releases the occupied resources when the passive optical asset is scrapped, makes the state truth source of the passive optical path independent of the easily deviated account book, and improves the consistency of asset data and the existing network.

Description

Technical Field

[0001] This application relates to the field of passive optical network resource management, and in particular to a method and system for full lifecycle management of passive optical assets that integrates multi-dimensional information. Background Technology

[0002] Passive optical networks (PONs) distribute optical signals from optical line terminals (OLTs) to multiple optical network units (ONUs) via optical splitters. The optical cables, splitters, distribution frames, junction boxes, and various patch cords along the transmission path constitute passive optical assets. These assets are not connected to a power source, do not generate or report operational status, and are invisible in the middle of the transmission path, making them typical "dumb" devices. In campus networks and metropolitan area access networks, passive optical assets are numerous and widely distributed; their connectivity and occupancy status are fundamental data supporting service activation, fault location, and resource scheduling.

[0003] To manage these passive optical assets, it is necessary to record the identifier, geographical location, network topology connection, and current usage status of each asset. In actual operation and maintenance, this information is often scattered across independent systems such as coding registration, geographic information, network topology, and operation and maintenance work orders. The entire process of asset entry, use, adjustment, and eventual disposal requires updating all records accordingly; otherwise, subsequent resource queries and service scheduling will be affected.

[0004] Existing passive optical asset management relies on manually entered and maintenance work order-driven ledgers as the true source of connection relationships and occupancy status. Since passive optical assets are dummy devices that do not generate status signals, their actual status cannot be automatically obtained and can only be inferred from the entered and work order records. However, field operations such as fiber jumpers and emergency repairs are often not accompanied by work orders, and there are duplicates and omissions in the identification entries, causing the ledger records to continuously deviate from the actual status of the live network. When discrepancies occur, the basis for verification is still this ledger that has already deviated. The channels on which the diagnosis depends overlap with the channels where the failure occurs, lacking physical references independent of the ledger. The deviation is difficult to detect and correct, and the multi-dimensional information scattered in various systems will also conflict with each other because only some of them are updated. Summary of the Invention

[0005] In order to enable the connection relationship and occupancy status of passive optical assets to be verified and corrected independently of the input and work order ledgers that are prone to deviation from the existing network, this application provides a method and system for full life cycle management of passive optical assets that integrates multi-dimensional information.

[0006] Firstly, this application provides a method for full lifecycle management of passive optical assets that integrates multi-dimensional information, employing the following technical solution: A method for full lifecycle management of passive optical assets that integrates multi-dimensional information includes the following steps: S1. Establish a multi-dimensional information record for passive optical assets. The multi-dimensional information record integrates the unified coding information, geographical location information, network topology location information and usage status information of the passive optical assets. The unified coding information is used as the primary key, and the network topology location information represents the connection relationship between the passive optical assets and adjacent assets. S2. Responding to the status flow of maintenance work orders, determine the passive optical assets associated with the maintenance work order based on the work order type, and automatically update the usage status information of the passive optical assets in the multidimensional information record. S3. Obtain the operating status of the active device corresponding to the passive optical asset, verify the connectivity and occupancy status of the passive optical path where the passive optical asset is located with the operating status of the active device, and correct the usage status information and connection relationship of the passive optical asset in the multidimensional information record based on the verification results. S4. Throughout the entire lifecycle of a passive optical asset, from its entry and use to its disposal, maintain multi-dimensional information records based on changes in usage status information, and release the resources occupied by the passive optical asset in response to a work order type of disposal.

[0007] By adopting the above technical solution, the unified coding, geographical location, network topology, and usage status of passive optical assets are integrated into a multi-dimensional information record with the coding as the primary key, forming a unified traceable structure for the dispersed asset information. On this basis, on the one hand, the status flow of maintenance work orders drives the automatic synchronization of usage status; on the other hand, the operating status of the corresponding active devices of passive optical assets is obtained. The operating status automatically generated by the active devices verifies the actual connectivity and occupancy of the passive optical path, and is used to correct the usage status and connection relationship in the multi-dimensional information record. Thus, the basis for judging the status is shifted from the entry and work order ledger that are prone to deviation from the existing network to the operating status of the active devices, which is independent of the ledger. This ensures that the asset data remains consistent with the existing network throughout its entire lifecycle, from entry to disposal.

[0008] Optionally, the active device includes an optical line terminal (OLT), and step S3 includes sub-steps S31 to S33. S31. Obtain the online and registration status of the downstream optical network units automatically discovered by the OLT. S32. Compare the online and registration status with the usage status information of the corresponding passive optical assets in the multi-dimensional information record. S33. In response to inconsistencies between the online or registration status and the usage status information, correct the usage status information and the connection relationship between the passive optical assets and the optical network units based on the online and registration status.

[0009] By adopting the above technical solution, the online and registration status of the downstream optical network units automatically discovered by the optical line terminal is used as the verification basis, so that the connectivity and occupancy of the passive optical path can be verified by actual measurement from the active side. The deviation of the usage status and connection relationship can be discovered and corrected without relying on manual input.

[0010] Optionally, in S3, when correcting the usage status information based on the verification results, the usage status information, network topology location information, and geographic location information are corrected as a whole to ensure that the information of each dimension of the passive optical asset in the multidimensional information record remains consistent.

[0011] By adopting the above technical solution, the usage status, network topology and geographical location are treated as a whole during the correction, avoiding the contradiction between records of each dimension caused by updating only a single dimension.

[0012] Optionally, in S3, the number of optical network units actually online in the optical line terminal is also balanced with the number of occupied ports registered in the corresponding optical splitter in the multi-dimensional information record. In response to the inconsistency between the number and the number of occupied ports, the port corresponding to the difference is identified as a suspected drift port.

[0013] By adopting the above technical solution, the number of online ports measured on the active side is matched with the number of ports registered in the ledger, and suspected drift ports that cannot be detected by online status alone are either registered for occupancy but have no actual load, or have actual load but are not registered.

[0014] Optionally, the following positioning operation is also performed on the passive optical path where the suspected drift port is located: trigger optical time-domain reflectometry to obtain the event distance. Map the event distance to the corresponding passive optical asset node according to the link-level segment length geometry carried by the unified coding information. Based on the mapped passive optical asset node, locate the passive optical asset where the drift occurs.

[0015] By adopting the above technical solution, the event distance obtained by optical time-domain reflectometry is combined with the link-level segment length geometry carried by the encoding to locate the physical ranging result to the specific passive optical asset node, providing physical-level positioning for suspected drift.

[0016] Optionally, for passive optical paths that are not identified as suspected drift ports (i.e., those with the same number during alignment), the following verification operation is performed: Optical time-domain reflectometry is triggered to obtain the event distance. The event distance is mapped to the corresponding passive optical asset node according to the link-level segment length geometry carried by the unified coding information. If the mapped passive optical asset node is inconsistent with the passive optical assets of the passive optical path recorded in the network topology location information, it is determined that there is a drift in the connection relationship not identified during alignment, and the connection relationship is corrected based on the mapped passive optical asset node.

[0017] By adopting the above technical solution, the geometric mapping results of optical time-domain reflectometry are compared with the topological record, and a symmetrical shift drift that is imperceptible in the balancing process and whose port occupancy remains unchanged is found, thus correcting this type of hidden offset.

[0018] Optionally, it also includes: periodically comparing and verifying the results with the usage status information in the multidimensional information records; and automatically creating and dispatching verification-type maintenance work orders in response to persistent inconsistencies between the verification results and the usage status information and the absence of any maintenance work orders in transit associated with the corresponding passive optical assets.

[0019] By adopting the above technical solution, assets that have been in a state of inconsistency between verification and registration and have not been touched by work orders for a long time are actively dispatched for verification, and the passive waiting for work orders is supplemented into active verification triggered by active state.

[0020] Optionally, for purely passive assets that are not connected to active devices at either end and cannot be verified by the operating status of active devices, the following proactive verification operations are also performed: The duration for which the purely passive asset has not been touched by maintenance work orders is recorded. If the duration exceeds a preset threshold, a verification-type maintenance work order for the purely passive asset is automatically created and dispatched. In response to the on-site verification results returned by the verification-type maintenance work order, the usage status information and connection relationships of the purely passive asset in the multidimensional information record are updated.

[0021] By adopting the above technical solution, for purely passive assets without any active verification signal, on-site verification is proactively dispatched based on the trigger condition that the duration of non-access exceeds a threshold, thus filling the blind spots not covered by active verification.

[0022] Optionally, in S4, in response to the work order type being scrapped, the downstream assets of the passive optical asset are determined based on the network topology location information. The operating status of the active device corresponding to the downstream asset is used to determine whether the downstream asset is occupied. In response to the fact that none of the downstream assets are occupied, the resources occupied by the passive optical asset and the downstream assets are released to the available resource pool. In response to the fact that there are occupied downstream assets, the corresponding resources are retained and the occupied downstream assets are marked as pending migration.

[0023] By adopting the above technical solution, when scrapping, the downstream connection is extended along the connection relationship and the active state of the downstream assets is used to determine whether they are still carrying the business. Resources are only released when there is no active state downstream, thus avoiding the accidental release of resources that are still carrying the business.

[0024] Optionally, the unified coding information is coded hierarchically, including campus identifier, computer room or building identifier, equipment type identifier and equipment serial number in sequence. The mounting position of passive optical assets in the network topology location information is obtained by parsing the unified coding information.

[0025] By adopting the above technical solution, the encoding itself carries hierarchical and mounting location information, and the location of the asset in the topology can be parsed from the encoding without additional tags.

[0026] Optionally, the network topology location information includes the uplink asset identifier and downlink asset identifier of the passive optical asset, and the connection relationship is established according to the association between the unified coding information of the passive optical asset and the unified coding information of the uplink and downlink assets.

[0027] By adopting the above technical solution, the connection relationship between the upper and lower codes is expressed, so that the connection relationship can be directly traced by the code.

[0028] Optionally, the work order type includes at least one of the following: fault reporting type, equipment replacement type, and asset scrapping type. The status flow of the maintenance work order includes the status changes from creation and processing to completion.

[0029] By adopting the above technical solution, the work order type and status transition are clearly defined as the triggering basis for automatic synchronization of usage status.

[0030] Optionally, in response to the collection of identifiers for passive optical assets, the collected unified coding information is bound to the geographical location information and network topology location information of the passive optical assets to establish a multi-dimensional information record, and in response to the duplication of the collected unified coding information with the unified coding information of the existing multi-dimensional information record, a duplication prompt is output.

[0031] By adopting the above technical solution, multi-dimensional information is bound during the input stage and duplicate codes are prompted in real time, thereby reducing duplicate codes and missing codes from the source.

[0032] Optionally, in response to fault information pushed by the network management system, an operation and maintenance work order of the fault reporting type can be automatically created.

[0033] By adopting the above technical solution, fault information from the network management side can directly drive the creation of work orders, shortening the fault response chain.

[0034] Optionally, multidimensional information records are stored in a graph data structure, with passive optical assets represented as vertices, connection relationships represented as edges, and vertex attribute records containing unified encoded information, geographic location information, and usage status information.

[0035] By adopting the above technical solution, assets and connection relationships can be expressed in a graph structure, which facilitates the expansion of downstream and traceability paths along the connection edges.

[0036] Optionally, the unified coding information for passive optical assets of the optical cable type includes the local asset identifier and the remote asset identifier, and the connection relationship is established according to the local asset identifier and the remote asset identifier.

[0037] By adopting the above technical solution, the ownership of both ends of the optical cable is expressed by the code itself, and the connection relationship is determined by the code.

[0038] Optionally, the optical splitter includes a primary optical splitter and a secondary optical splitter, with the unified coding information of the secondary optical splitter prefixed with the unified coding information of its primary optical splitter.

[0039] By adopting the above technical solution, the optical splitting level is expressed by a prefix relationship, which facilitates the identification of the cascaded affiliation of optical splitters by coding.

[0040] Optionally, geographic location information includes the map coordinates of the passive optical asset in the geographic information system, as well as the building and room identifiers.

[0041] By adopting the above technical solutions, assets can be located to buildings and rooms in the geographic information system, supporting on-site verification and fault location.

[0042] Optionally, the usage status information includes at least one of the following: normal status, fault status, scrap status, and spare parts status.

[0043] By adopting the above technical solution, the usage of assets is expressed by enumerating states, which facilitates state synchronization and resource scheduling judgment.

[0044] Optionally, passive optical assets include at least one of optical cable distribution frames, optical cable junction boxes, optical splitters, trunk optical cables, distribution optical cables, drop cables, and patch cords, with access methods including fiber to the building and fiber to the room.

[0045] By adopting the above technical solutions, the types of assets under management and the scope of access methods are clearly defined, making the solutions applicable to different access scenarios.

[0046] Optionally, a barcode is generated based on the unified coding information. The barcode is used to identify the passive optical asset and can be scanned and read by the mobile terminal. In response to scanning, the barcode displays the multi-dimensional information record of the corresponding passive optical asset.

[0047] By adopting the above technical solution, barcodes are used to carry codes and allow on-site scanning to retrieve records, which facilitates on-site operations and verification.

[0048] Optionally, the work order process for maintenance work orders can be customized and generated through low-code configuration.

[0049] By adopting the above technical solutions, the work order process can be flexibly configured according to operation and maintenance needs, adapting to different work order processing rules.

[0050] Optionally, the operating status of active devices also includes the optical power of the passive optical path where the passive optical asset is located, and the connectivity status of the passive optical path is verified based on the optical power.

[0051] By adopting the above technical solution, optical power is used as a supplementary verification indicator in addition to the online registration state, thereby improving the reliability of connectivity verification.

[0052] Optionally, the synchronization of status information used in multidimensional information records is driven in layers according to the time scale of the signal source. Among them, the synchronization triggered by the operating status of active devices is executed on a real-time scale, the synchronization triggered by the status flow of maintenance work orders is executed on an event scale, the synchronization triggered by the periodic verification of multidimensional information records is executed on a periodic batch scale, and the usage status information of passive optical assets that are not in operation is synchronized in a delayed batch manner.

[0053] By adopting the above technical solution, synchronization is driven in layers according to the time scale of the signal source, and resources with no business value are processed in batches with delays, thereby reducing synchronization overhead while ensuring consistency.

[0054] Optionally, in S2, the set of downstream assets expanded along the connection relationship of the passive optical assets is used as the boundary of the update transaction, and the usage status information of each passive optical asset within the boundary and the connection relationship are atomically updated as a whole.

[0055] By adopting the above technical solution, atomic updates are performed using the downstream expanded set of the connection chain as the transaction boundary, thus avoiding dimensional conflicts caused by partial updates on the optical path affected by a single work order.

[0056] Optionally, the link-level segment length geometry includes the cumulative segment length of each link level identified by the unified coding information. The cumulative segment length is used to back-calculate the event distance to the passive optical assets of the corresponding link level.

[0057] By adopting the above technical solution, the cumulative segment length of each level identified by the code supports the inverse calculation of the ranging distance, so that the physical ranging result can be mapped to a specific asset node.

[0058] Optionally, the usage status information obtained through synchronization can be assigned a confidence level according to the reliability of the signal source, and the usage status information obtained from different signal sources can be converged according to a preset confidence convergence rule.

[0059] By adopting the above technical solution, the states obtained from different signal sources are layered and converged according to their credibility, so that the states from multiple sources can be merged in a reliable manner when there is a conflict.

[0060] Optional, passive assets include the main optical cable connecting the equipment room and the optical cable junction box, as well as spare fiber cores that have not been spliced.

[0061] By adopting the above technical solutions, the typical scope of purely passive assets is clarified, so that proactive verification of blind spots has specific targets.

[0062] Optionally, for each synchronization of usage status information and connection relationships, the differences before and after synchronization are recorded and written into an immutable change audit chain. The change audit chain is used to trace the change trajectory from the nominal state to the actual state of multi-dimensional information records.

[0063] By adopting the above technical solution, the change trajectory from the nominal state to the actual state is retained in the immutable audit chain, making the generation and correction process of the offset traceable.

[0064] Secondly, this application provides a passive optical asset lifecycle management system that integrates multi-dimensional information, employing the following technical solution: A passive optical asset lifecycle management system integrating multi-dimensional information includes: The information recording module is configured to establish multi-dimensional information records for passive optical assets. The multi-dimensional information records integrate the unified coding information, geographical location information, network topology location information and usage status information of the passive optical assets, with the unified coding information as the primary key and the network topology location information representing the connection relationship between the passive optical assets and adjacent assets. The status synchronization module, connected to the information recording module, is configured to respond to the status flow of maintenance work orders and automatically synchronize and update the usage status information of passive optical assets according to the work order type. The active verification module is connected to the information recording module. It is configured to acquire the operating status of the active device corresponding to the passive optical asset, verify the connectivity and occupancy status of the passive optical path where the passive optical asset is located with the operating status of the active device, and correct the usage status information and connection relationship based on the verification results. The full lifecycle management module, connected to the status synchronization module and the active status verification module, is configured to maintain multi-dimensional information records based on changes in usage status information throughout the entire lifecycle of a passive optical asset, from entry and use to disposal, and to release the resources occupied by the passive optical asset in response to a work order type of disposal.

[0065] By adopting the above technical solution, four interconnected modules are used to carry out the modeling, work order synchronization, active verification and full life cycle management of the above method, so that the various technical effects of the method can be realized in the system form as well.

[0066] In summary, this application includes at least one of the following beneficial technical effects: 1. This application establishes a multi-dimensional information record for passive optical assets, using a unified code as the primary key and integrating geographical location and network topology. It also uses the operating status automatically generated by active devices to verify the connectivity and occupancy of passive optical paths. The true source of the status is migrated from the easily offset input and work order ledgers of the existing network to the independent operating status of active devices, so that the asset data remains consistent with the existing network throughout its entire life cycle.

[0067] 2. Based on active state verification, through balancing online quantity and registered occupancy, geometric mapping of optical time domain reflectance ranging for suspected ports and balancing blind spots, and proactive verification and dispatching of long-term inconsistent assets, the system gradually covers occupancy offsets that cannot be detected by online status alone, symmetrical jump drifts with unchanged port numbers, and blind spot assets not covered by work orders.

[0068] 3. When an asset is scrapped, proceed downstream along the connection relationship and determine whether it is still carrying the business based on the active state of the downstream asset. Only release resources when there is no active state downstream, to avoid mistakenly releasing resources that are still carrying the business, and to ensure that the resource recovery throughout the entire life cycle is consistent with the actual occupation of the existing network. Attached Figure Description

[0069] Figure 1 This is a schematic diagram of the overall process of a passive optical asset lifecycle management method that integrates multi-dimensional information in one embodiment of this application.

[0070] Figure 2 This is a schematic diagram of the passive optical asset connection relationship in one embodiment of this application.

[0071] Figure 3 This is a schematic diagram illustrating a sub-process of a passive optical path in one embodiment of this application, demonstrating the operation of an active device.

[0072] Figure 4 This is a schematic diagram of the structure of a passive optical asset lifecycle management system that integrates multi-dimensional information in one embodiment of this application. Detailed Implementation

[0073] The present application will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the application and are not intended to limit the scope of the application.

[0074] Reference Figure 1 This application discloses a method for full lifecycle management of passive optical assets that integrates multi-dimensional information. This method establishes a multi-dimensional information record for passive optical assets, integrating unified coding information, geographic location information, network topology location information, and usage status information. On one hand, the status flow of maintenance work orders drives the automatic synchronization of usage status; on the other hand, it obtains the operating status of the corresponding active devices of the passive optical assets. The operating status automatically generated by the active devices verifies the actual connectivity and occupancy status of the passive optical path, and corrects the usage status information and connection relationships in the multi-dimensional information record accordingly. This shifts the basis for status judgment from the easily misaligned data entry and work order ledger to the active device operating status, independent of the ledger, ensuring that asset data remains consistent with the existing network throughout its entire lifecycle, from entry and use to disposal.

[0075] The following section will first explain some of the technical terms involved in the embodiments of this application.

[0076] Passive optical assets refer to physical resources in an optical fiber access network that do not contain active devices and do not generate operational status that can be directly collected by the network management system. Examples include optical distribution frames, optical junction boxes, optical splitters, trunk optical cables, distribution optical cables, drop cables, and patch cords. Since these assets do not report their status, their connection and occupancy status can usually only be described by manual entry and work order records.

[0077] Active devices refer to network devices in an optical fiber access network that contain active components and can automatically generate and report their operating status, including optical line terminals and optical network units connected to optical line terminals; correspondingly, the operating status such as online status, registration status, and optical power automatically generated by active devices and collected by the network management system are collectively referred to as active states in this application embodiment.

[0078] Multidimensional information recording refers to a data record that integrates the geographical location information, network topology location information, and usage status information of a passive optical asset, using the unified coding information of the passive optical asset as the primary key. The information in each dimension is continuously maintained and updated throughout the entire lifecycle of the asset, without the need to create multiple records for the same asset.

[0079] A passive optical path is a physical channel for carrying optical signal transmission, which is formed by connecting several passive optical assets in series. A passive optical path can be extended from the optical line terminal through the trunk optical cable, optical splitter, distribution optical cable and drop cable to the optical network unit.

[0080] For ease of explanation, the examples in the following steps all use the same campus fiber optic access network as a baseline scenario. (Refer to...) Figure 2 In this network, the optical line terminal is connected to the optical cable junction box via the trunk optical cable. The optical cable junction box is equipped with a primary optical splitter. The primary optical splitter is connected to the secondary optical splitter in each building via the distribution optical cable. The secondary optical splitter is then connected to the optical network unit in each room via the butterfly drop cable, thus forming multiple passive optical paths from the optical line terminal to each optical network unit.

[0081] The steps of this method are explained in detail below.

[0082] S1. Establish multi-dimensional information records for passive optical assets. These records integrate the unified coding information, geographic location information, network topology location information, and usage status information of the passive optical asset. The unified coding information serves as the primary key, while the network topology location information represents the connection relationship between the passive optical asset and adjacent assets. In this step, asset information originally scattered across different systems is integrated into a single record with the unified coding information as the primary key. This allows the coding, location, topology, and status of the same passive optical asset to be retrieved and maintained together using this primary key. Specifically, the unified coding information uniquely identifies the passive optical asset, the geographic location information describes the asset's physical location, the network topology location information describes the asset's location within the optical network connection structure, and the usage status information describes whether the asset is currently occupied by services. Because the unified coding information is used as the primary key, the various dimensions of information for the same asset are bound together. When any dimension changes, the remaining dimensions of information for that asset can be located along the primary key, maintaining consistency across dimensions. This provides a unified data foundation for subsequent synchronization and correction of status based on work orders and active status.

[0083] The unified coding information can optionally be hierarchically coded, including campus identifier, computer room or building identifier, equipment type identifier, and equipment serial number in that order. The mounting location of the passive optical asset in the network topology location information is obtained by parsing the unified coding information. In this way, the code itself carries hierarchical information such as the campus, computer room, equipment type, and serial number to which the asset belongs, and the mounting location of the asset in the network topology can be obtained from the code without additional tags.

[0084] In some embodiments, the unified coding information for passive optical assets such as optical cables includes a local asset identifier and a remote asset identifier, and the connection relationship is established based on the local asset identifier and the remote asset identifier. Thus, the ownership of both ends of the optical cable is expressed by the coding itself, and the connection relationship between the optical cable and the assets connected to its two ends is determined as the coding is determined.

[0085] An optical splitter may include a primary optical splitter and a secondary optical splitter. The unified coding information of a secondary optical splitter is prefixed with the unified coding information of its parent primary optical splitter. In this way, the splitting hierarchy is expressed by prefix relationship, which facilitates the identification of the primary optical splitter to which the secondary optical splitter belongs and its cascade affiliation by coding.

[0086] In some embodiments, network topology location information includes uplink and downlink asset identifiers for passive optical assets (POAs). Connection relationships are established based on the association between the unified coding information of the POA and the unified coding information of the uplink and downlink assets. The uplink asset identifier points to the upstream asset of the POA in the optical signal transmission direction, and the downlink asset identifier points to its downstream asset. The uplink and downlink identifiers of each asset are interconnected, forming a connection chain from the optical line terminal to the optical network unit in the multidimensional information record. Since the connection relationship is expressed by the association between the asset codes, all POAs traversed by any POA path can be traced hop-by-hop along the uplink or downlink identifier, providing a topological basis for subsequent active state correction of the connection relationship.

[0087] Multidimensional information records can be stored using a graph data structure. Passive optical assets are represented as vertices, and connectivity relationships are represented as edges. Vertex attributes record unified encoded information, geographic location information, and usage status information. In this way, expressing assets and connectivity relationships with a graph structure makes it easy to expand the downstream asset set of any asset along the connectivity edges and trace the path of its passive optical path.

[0088] In some embodiments, the geographic location information includes the map coordinates of the passive optical asset in the geographic information system, as well as the building and room identifiers, so that the asset can be located to a specific building and room in the geographic information system, supporting on-site verification and fault location during field search.

[0089] Usage status information may include at least one of normal status, fault status, scrap status, and spare parts status. The enumerated usage status expresses the current usage of the asset, which facilitates automatic status synchronization and occupancy judgment during resource scheduling.

[0090] In some embodiments, passive optical assets include at least one of optical distribution frames, optical junction boxes, optical splitters, trunk optical cables, distribution optical cables, drop cables, and patch cords, and the access methods include fiber to the building and fiber to the room, thus making this method applicable to different access scenarios such as fiber to the building and fiber to the room.

[0091] The barcode can be generated based on unified coding information, used to identify passive optical assets and for mobile terminals to scan and read. It also displays multi-dimensional information records of the corresponding passive optical asset in response to scanning. Thus, maintenance personnel can retrieve the asset's multi-dimensional information records simply by scanning the barcode on-site, facilitating on-site operations and the writing back of verification results.

[0092] During the data entry phase, in response to the collection of identifiers for passive optical assets, the collected unified coding information is bound to the geographical location information and network topology location information of the passive optical assets to establish a multi-dimensional information record. Furthermore, in response to the duplication of collected unified coding information with the unified coding information of an existing multi-dimensional information record, a duplication warning is output. In this way, multi-dimensional information is bound and recorded during the data entry phase, and a warning is given immediately when the collected code duplicates an existing record, reducing duplicate and missing codes from the source.

[0093] S2. Responding to the status transition of maintenance work orders, based on the work order type, determine the passive optical assets associated with the maintenance work order and automatically update the usage status information of the passive optical assets in the multidimensional information record. After an asset is entered, its usage status will continuously change with the activation, adjustment, and dismantling of services. To ensure that status updates are synchronized with service operations, this step links the usage status update to the status transition of the maintenance work order. Specifically, when the status of a maintenance work order transitions, the associated passive optical assets are determined based on the work order type, and the usage status information of these assets is synchronously updated in the multidimensional information record accordingly, so that status changes are automatically recorded as the work order is processed.

[0094] Work order types can include at least one of fault reporting, equipment replacement, and asset disposal types. The status flow of maintenance work orders includes the status changes from creation and processing to completion. Thus, the type of work order and its status flow from creation to completion serve as the trigger for automatic synchronization of usage status.

[0095] In some embodiments, in response to fault information pushed by the network management system, a maintenance work order of the fault reporting type is automatically created. In this way, fault information detected by the network management side can directly drive the creation of fault reporting work orders, and then trigger the synchronization of the corresponding asset usage status through the aforementioned work order status flow, shortening the response chain from fault discovery to record update.

[0096] The workflow of operation and maintenance work orders can also be customized through low-code configuration, so that the workflow can be flexibly configured according to operation and maintenance needs to adapt to different work order processing rules.

[0097] Building upon the automatic synchronization of usage status described above, S2 can optionally use the set of downstream assets expanded along the connection relationship of the passive optical assets as the boundary of the update transaction. The usage status information and connection relationships of each passive optical asset within the boundary are then atomically updated as a whole. A single work order often affects multiple passive optical assets on a single passive optical path. If the status and connection relationships of each asset are updated separately, an intermediate state may occur where some assets have been updated while others have not, leading to contradictions in the usage status and connection relationships of assets on the same optical path. Using the downstream expansion set of the connection chain as the transaction boundary for atomic updates ensures that the updates of this batch of assets either all take effect or none take effect, avoiding the dimensional conflicts caused by partial updates. In one implementation, if the update of any asset fails during the atomic update process, the update of all assets within the transaction boundary is rolled back, restoring the multidimensional information records to a consistent state before the update, and marking this synchronization as pending retry.

[0098] In some embodiments, the synchronization of state information in multidimensional information records is driven in a hierarchical manner according to the time scale of the signal source. Specifically, synchronization triggered by the operating status of active devices is executed on a real-time scale; synchronization triggered by the status flow of maintenance work orders is executed on an event scale; synchronization triggered by periodic checks of multidimensional information records is executed on a periodic batch scale; and the usage status information of passive optical assets not yet in operation is synchronized in a delayed batch manner. Different signal sources have different timeliness requirements for reflecting status changes. Changes in the active state need to be reflected as quickly as possible to ensure real-time consistency; work order flow can be triggered by events; while periodic checks and synchronization of assets not yet in operation have lower timeliness requirements. This hierarchical synchronization driven by the signal source's time scale, with delayed batch processing for resources without business value, reduces the processing overhead of synchronization while ensuring overall consistency.

[0099] For the synchronously obtained usage status information, confidence levels can be optionally assigned hierarchically according to the reliability of the signal source, and the usage status information obtained from different signal sources can be converged according to a preset confidence convergence rule. The usage status of the same asset may be provided by multiple signal sources, such as active status, work orders, and manual verification. When the statuses given by these signal sources are inconsistent, the results are assigned corresponding confidence levels according to the reliability of each signal source, and then the result with the higher confidence level is taken as the convergence result according to the preset confidence convergence rule. This allows multiple source statuses to be merged into one status with a reliable basis when they conflict. In the case of the same confidence level, convergence can be performed according to a preset priority or based on the most recent active status result.

[0100] For each synchronization of usage status information and connection relationships, the differences before and after synchronization can be optionally recorded and written into an immutable change audit chain. This change audit chain is used to trace the change trajectory of multidimensional information records from the nominal state to the actual state, so that the generation and correction process of offsets can be traced.

[0101] S3. Obtain the operating status of the active devices corresponding to the passive optical assets. Use the operating status of the active devices to verify the connectivity and occupancy status of the passive optical path where the passive optical asset is located, and correct the usage status information and connection relationships of the passive optical asset in the multidimensional information record based on the verification results. Passive optical assets themselves do not generate collectable operating statuses, and their connectivity and occupancy cannot be directly confirmed by the asset itself. However, the operating status of active devices on the same passive optical path as the passive optical asset can reflect whether the passive optical path is actually connected and whether it is actually carrying services. Therefore, this step obtains the operating status of the active devices corresponding to the passive optical assets, uses the automatically generated operating status of these active devices to verify the connectivity and occupancy status of the passive optical path where the passive optical asset is located, and corrects the usage status information and connection relationships in the record based on the verification results when the verification results are inconsistent with the multidimensional information record. This shifts the basis for status judgment from manually entered ledgers to operating statuses automatically generated by the active devices, independent of those ledgers. For example, for a passive optical path recorded as occupied, if its corresponding active device is online, the verification result is consistent with the record, and the record remains unchanged. If the passive optical path is recorded as occupied, but its corresponding active device is not carrying data, the verification result is inconsistent with the record, and the usage status of the relevant asset is corrected to unoccupied based on the verification result. For passive optical paths with no active devices at either end and which cannot be verified by active status, they fall into the coverage blind spot of this verification mechanism and will be handled by subsequent proactive verification for purely passive assets. In addition to using the online and registration status of the optical line terminal as verification basis, other operational statuses that can reflect the actual carrying status of the passive optical path, such as alarm information generated by active devices and session establishment status, can also be used as verification basis.

[0102] The aforementioned active devices may include optical line terminals (OLTs), and correspondingly, step S3 includes sub-steps S31 to S33. An OLT is an active device located at the central office in an optical access network, capable of automatically discovering and managing its connected optical network units (ONUs). An ONU is an active device located on the user side, accessing the OLT via a passive optical path. The online status of an ONU indicates whether it is currently online, and the registration status indicates whether it has successfully registered with the OLT. Using the online and registration status of ONUs as verification criteria allows for actual verification of the connectivity and occupancy of the passive optical path from the active side, enabling the detection of deviations in usage status and connection relationships without relying on manual input.

[0103] S31. Obtain the online and registration status of the downstream optical network units automatically discovered by the optical line terminal. During operation, the optical line terminal automatically discovers each of its downstream optical network units and maintains the online and registration status of each unit. This step involves obtaining the online and registration status of each discovered optical network unit from the optical line terminal.

[0104] S32. Compare the online status and registration status with the usage status information of the corresponding passive optical asset in the multidimensional information record. For example, for an optical network unit accessed through a port of a secondary optical splitter, if the optical network unit is online and successfully registered, and the corresponding port is also registered as occupied in the record, then the two are consistent; if the optical network unit is offline, but the corresponding port is registered as occupied in the record, then the online status and usage status information do not match; if the optical network unit is online but no corresponding occupancy registration can be found in the record, then the registration status and usage status information do not match.

[0105] S33. In response to inconsistencies between online status or registration status and usage status information, the usage status information and the connection relationship between the passive optical asset and the optical network unit are corrected based on the online status and registration status. That is, when the above discrepancy occurs, the actual online and registration status of the optical network unit is used as the standard, the usage status information of the corresponding passive optical asset is corrected to be consistent with the actual measurement, and the connection relationship between the passive optical asset and the optical network unit is corrected accordingly.

[0106] In addition to comparing online status with registration status, refer to Figure 3 Furthermore, comparisons can be made based on the registration logs of optical line terminals or the session establishment status of optical network units to obtain similar verification results.

[0107] In some embodiments, when correcting the usage status information based on the verification results in S3, the usage status information, network topology location information, and geographic location information are corrected as a whole to ensure consistency of the various dimensions of the passive optical asset in the multidimensional information record. When the verification result triggers the correction of the usage status of a passive optical asset, the connectivity of the asset often changes accordingly, and its position in the network topology and even its corresponding geographic location may need to be adjusted accordingly. If only the usage status is updated without simultaneously adjusting the topology and geographic dimensions, it will cause contradictions in the records of the same asset across different dimensions. Therefore, the usage status, network topology, and geographic location are corrected as a whole, and their consistency is checked after the correction is completed.

[0108] Based on the aforementioned active state verification, S3 can further balance the number of optical network units actually online in the optical line terminal with the number of occupied ports registered in the corresponding optical splitter in the multidimensional information record. In response to discrepancies between the actual number and the number of occupied ports, the port corresponding to the difference is identified as a suspected drift port. While comparing online and registered states line by line can detect discrepancies, it may not be possible to detect discrepancies when a port is registered as occupied in the record but actually has no optical network units carrying it, or when a port actually carries it but is not registered in the record. However, balancing the total number of online units with the total number of registered occupied units can expose such discrepancies. Specifically, the number of optical network units actually online in the optical line terminal under a certain optical splitter is counted, and the number of occupied ports registered in the multidimensional information record for that optical splitter is read. The port corresponding to the difference between the two is identified as a suspected drift port. For example, a certain secondary optical splitter is a 1-to-8 splitter. Its multidimensional information record shows six occupied ports, while the actual number of online optical network units (ONUs) belonging to this splitter at the optical line terminal is five. The difference of one port indicates that the port on the splitter that does not correspond one-to-one with an online ONU is identified as a suspected drift port. Besides balancing based on the number of online ONUs, the actual number of ports carried can be deduced from the optical power distribution of each port on the optical line terminal side, and then balanced against the registered occupied number.

[0109] For the passive optical path where the suspected drift port is located, the following positioning operations can be performed: trigger optical time-domain reflectometry (OTDR) to obtain the event distance; map the event distance to the corresponding passive optical asset node according to the link-level segment length geometry carried by the unified coding information; and locate the passive optical asset where the drift is located based on the mapped passive optical asset node. ORT can measure the distance from the test end to a reflection or loss event on a passive optical path, while the link-level segment length geometry carried by the unified coding information records the length of each segment along the passive optical path. Combining these two methods allows the event distance to be converted to a specific passive optical asset node. For example, if a passive optical path has a trunk optical cable segment length of 1200 meters and a distribution optical cable segment length of 300 meters from the optical line terminal, and the event distance obtained from ORT is 1350 meters, then this distance falls after the end of the trunk optical cable and in the middle of the distribution optical cable. Based on this, the suspected drift can be located to the passive optical asset corresponding to the distribution optical cable segment. Optical time domain reflectance ranging equipment is a conventional ranging method. The positioning here relies on the inverse calculation combining it with the segment length geometry carried by the code.

[0110] In some embodiments, the link-level segment length geometry includes the cumulative segment length of each link level identified by the unified coding information. This cumulative segment length is used to back-calculate the event distance to the passive optical assets of the corresponding link level. The cumulative segment length of each link level refers to the cumulative length from the test end along the passive optical path to the end of each level. Since the unified coding information identifies each link level traversed by the passive optical path, associating it with the cumulative segment length of each level allows for comparison of the cumulative segment lengths of the ends of two levels after obtaining an event distance, thereby back-calculating the distance to the passive optical assets on the corresponding link level.

[0111] For passive optical paths with consistent numbers during alignment and not identified as suspected drift ports, the following verification operations can be performed: trigger optical time-domain reflectometry (OTDR) to obtain the event distance; map the event distance to the corresponding passive optical asset node according to the link-level segment length geometry carried by the unified coding information; in response to the inconsistency between the mapped passive optical asset node and the passive optical assets of the passive optical path recorded in the network topology location information, it is determined that there is a drift in the connection relationship not identified by the alignment, and the connection relationship is corrected based on the mapped passive optical asset node. Quantity alignment can only reflect whether the total port occupancy is consistent. When two symmetrical hops occur on a passive optical path, i.e., one access is removed while another is added, the total port occupancy remains unchanged, and the alignment cannot detect this change in connection relationship; however, the geometric mapping result obtained from ODR directly corresponds to the asset nodes actually traversed by the optical path, and comparing it with the topology record can expose such hops. For example, a passive optical path is recorded as passing through two secondary optical splitters, A and B, and its total port occupancy matches the record during topology matching. However, the mapping result of optical time-domain reflectometry shows that the optical path actually passes through two secondary optical splitters, A and C, which is inconsistent with the topology record. Based on this, it is determined that a symmetrical hop from B to C has occurred, and the connection relationship of the passive optical path is corrected to pass through A and C. In addition to optical time-domain reflectometry, optical frequency-domain reflectometry, fiber optic identifiers, and other methods can also be used to obtain the geometric or path information of the passive optical path, and then compared with the topology record in the same way.

[0112] In some embodiments, the operating status of an active device may also include the optical power of the passive optical path where the passive optical asset is located, and the connectivity status of the passive optical path is verified based on the optical power. Online and registered status reflect whether the optical network unit has successfully registered, while optical power further reflects the actual optical signal transmission status of the passive optical path, serving as a supplementary verification indicator in addition to online and registered status. For example, when the received optical power corresponding to a passive optical path is higher than a preset connectivity determination threshold, the passive optical path is determined to be actually connected; when the received optical power is lower than the threshold, even if the corresponding optical network unit displays online, it can be determined that the passive optical path may have fiber breaks or connection degradation and is not effectively connected.

[0113] To promptly correct offsets that have not been addressed by work orders for an extended period, this method can also periodically compare the verification results with the usage status information in the multidimensional information records. In response to persistent inconsistencies between the verification results and usage status information, and the absence of any in-transit maintenance work orders associated with the corresponding passive optical asset, it automatically creates and dispatches verification-type maintenance work orders. Since work order status synchronization is passive, records are only updated when a relevant work order exists; if the verification status and registration status of an asset are inconsistent for a long period without any work orders addressing it, the offset will persist. Therefore, by comparing the verification results and usage status information of each asset at a preset period, and proactively initiating verification for assets with persistent inconsistencies, the passive waiting-for-work-order status correction is replaced with proactive verification triggered by the active status, shortening the duration of the offset. The following scenarios are distinguished during the judgment process: assets whose verification state and registration state are consistent are not processed; assets with in-transit maintenance work orders that are inconsistent but already related are assigned to that work order for processing without duplicate assignment; only assets with persistent inconsistencies and no related in-transit work orders are automatically assigned and verified maintenance work orders are created. In addition to using the number or duration of persistent inconsistencies as triggering conditions, the severity of the deviation between the verification state and registration state can be graded, or the confidence level of each signal source can be weighted before deciding whether to assign a work order.

[0114] For purely passive assets that are not connected to active devices at either end and cannot be verified by the operating status of active devices, the following proactive verification operations can be performed: Count the duration for which the purely passive asset has not been touched by maintenance work orders; in response to the duration exceeding a preset threshold, automatically create and dispatch a verification-type maintenance work order for the purely passive asset; in response to the on-site verification results returned by the verification-type maintenance work order, update the usage status information and connection relationships of the purely passive asset in the multi-dimensional information record. Since purely passive assets have no active devices at either end, their connectivity and occupancy cannot be verified by active states. The aforementioned verification, balancing, and geometric verification based on active states cannot cover such assets; without processing, the records of such assets will remain unverified for a long time. To this end, the system tracks the duration since each passive asset was last accessed by a maintenance work order. When this duration exceeds a preset threshold, it's considered that the asset's record may have become disconnected from the live network. An automatic verification-type maintenance work order is then created for the passive asset and dispatched to the field. The system updates the asset's usage status and connectivity information in the record based on the results of the field verification. The preset threshold can be set based on the asset's importance and the cost of field verification. Higher-importance assets use shorter thresholds for more frequent verification, while lower-importance assets use longer thresholds to control verification costs. In addition to using the inaccessibility duration exceeding the threshold as a trigger, passive assets can also be inspected at preset intervals, or nearby passive assets can be sampled and verified during each field operation.

[0115] The aforementioned passive assets may include the main optical cable connecting the equipment room and the optical cable junction box, as well as spare fiber cores that have not been cut, thus giving the proactive verification of blind spots a specific target.

[0116] S4. Throughout the entire lifecycle of a passive optical asset, from registration and use to disposal, multi-dimensional information records are maintained based on changes in usage status information. In response to a work order type of disposal, the resources occupied by the passive optical asset are released. The lifecycle of a passive optical asset can be divided into registration, use, and disposal stages: During the registration stage, its multi-dimensional information records are established; during the use stage, its usage status information and connectivity are continuously maintained as work orders are processed and active status is verified; and during the disposal stage, its network use ends. Specifically, throughout this entire lifecycle, multi-dimensional information records are continuously maintained based on changes in usage status information obtained from the aforementioned steps, ensuring that the records always reflect the latest status of the asset; and when the work order type is disposal, the resources occupied by the passive optical asset are released, removing it from the scope of in-use resources.

[0117] Building upon the aforementioned scrapping and release mechanism, S4 can further determine the downstream assets of the passive optical asset based on network topology location information when the work order type is scrapped. It then determines whether the downstream asset is occupied based on the operating status of the corresponding active device. If none of the downstream assets are occupied, the resources occupied by the passive optical asset and its downstream assets are released to the available resource pool. If any downstream assets are occupied, the corresponding resources are retained, and the occupied downstream assets are marked as awaiting migration. Here, downstream assets refer to passive optical assets located downstream of the scrapped passive optical asset along the connection relationship. The available resource pool is a collection of idle resources available for subsequent service reallocation. The awaiting migration marker indicates that although the asset is downstream of the scrapped asset, it is still being used and needs to be migrated. A decommissioned passive optical asset may still have downstream assets connected to it that are still carrying services. If all downstream resources are released directly upon decommissioning, resources still in use may be mistakenly released, causing service interruption. Therefore, upon decommissioning, the downstream connections are traced, and the active state of the corresponding active devices of the downstream assets is used to determine whether each downstream asset is still carrying services. Resources are only released when there are no active states downstream, thus avoiding the mistaken release of resources still carrying services. For example, if all downstream assets are idle and none of the corresponding active devices are carrying services, the passive optical asset and the resources occupied by its downstream assets are released to the available resource pool. If some downstream assets are occupied, the occupied downstream assets and their upstream resources are retained, and the occupied downstream assets are marked as pending migration, while the remaining idle resources are released. If all downstream assets are occupied, all related resources are retained, and each occupied downstream asset is marked as pending migration, but not released. In addition to determining whether the active devices corresponding to the downstream assets are occupied by active status, it is also possible to combine the usage records of the business support system or the in-transit maintenance work orders associated with the downstream assets to determine whether they are still being carried.

[0118] This application also discloses a passive optical asset lifecycle management system that integrates multi-dimensional information, referring to... Figure 4 The system includes an information recording module, a status synchronization module, an active status verification module, and a full lifecycle management module. The information recording module is configured to establish the aforementioned multi-dimensional information records for passive optical assets. The status synchronization module, connected to the information recording module, is configured to respond to the status flow of maintenance work orders and automatically synchronize and update the usage status information of the passive optical assets according to the work order type. The active status verification module, connected to the information recording module, is configured to obtain the operating status of the active devices corresponding to the passive optical assets, verify the connectivity and occupancy status of the passive optical path where the passive optical asset is located using the operating status of the active devices, and correct the usage status information and connection relationships based on the verification results. The full lifecycle management module, connected to the status synchronization module and the active status verification module, is configured to maintain multi-dimensional information records based on changes in usage status information throughout the entire lifecycle of the passive optical asset, from entry and use to disposal, and release the resources occupied by the passive optical asset in response to a work order type of disposal. Specific limitations of the above system can be found in the limitations of the above methods described above, and will not be repeated here. Each module in the above system can be implemented entirely or partially through software, hardware, or a combination thereof. Each module can be embedded in the processor of the computer device in hardware form or independent of it, or it can be stored in the memory of the computer device in software form, so that the processor can call and execute the operations corresponding to each module.

[0119] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is used as an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above.

[0120] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A method for full lifecycle management of passive optical assets integrating multi-dimensional information, characterized in that, Includes the following steps: S1. Establish a multi-dimensional information record for the passive optical asset. The multi-dimensional information record integrates the unified coding information, geographical location information, network topology location information and usage status information of the passive optical asset, and uses the unified coding information as the primary key. The network topology location information represents the connection relationship between the passive optical asset and adjacent assets. S2. In response to the status transition of the maintenance work order, determine the passive optical asset associated with the maintenance work order according to the work order type, and automatically update the usage status information of the passive optical asset in the multi-dimensional information record. S3. Obtain the operating status of the active device corresponding to the passive optical asset, verify the connectivity and occupancy status of the passive optical path where the passive optical asset is located with the operating status of the active device, and correct the usage status information of the passive optical asset and the connection relationship in the multidimensional information record based on the verification results. S4. Throughout the entire lifecycle of the passive optical asset from entry and use to disposal, maintain the multi-dimensional information record based on the changes in the usage status information, and release the resources occupied by the passive optical asset in response to the work order type being disposal type.

2. The method for full lifecycle management of passive optical assets integrating multi-dimensional information according to claim 1, characterized in that, The active device includes an optical line terminal, and step S3 includes the following sub-steps: S31. Obtain the online status and registration status of the downstream optical network units automatically discovered by the optical line terminal; S32. Compare the online status and the registration status with the usage status information of the corresponding passive optical asset in the multidimensional information record; S33. In response to a discrepancy between the online status or the registration status and the usage status information, the usage status information and the connection relationship between the passive optical asset and the optical network unit are corrected based on the online status and the registration status.

3. The method for full lifecycle management of passive optical assets integrating multi-dimensional information according to claim 1, characterized in that, In step S3, when correcting the usage status information based on the verification results, the usage status information, the network topology location information, and the geographical location information are corrected as a whole, so that the information of each dimension of the passive optical asset in the multidimensional information record remains consistent.

4. The method for full lifecycle management of passive optical assets integrating multi-dimensional information according to claim 2, characterized in that, In step S3, the number of optical network units actually online in the optical line terminal is balanced with the number of occupied ports registered in the corresponding optical splitter in the multi-dimensional information record. In response to the inconsistency between the number and the number of occupied ports, the port corresponding to the difference is identified as a suspected drift port.

5. The method for full lifecycle management of passive optical assets integrating multi-dimensional information according to claim 4, characterized in that, The following positioning operation is also performed on the passive optical path where the suspected drift port is located: Trigger optical time-domain reflectometry to obtain the event distance; Based on the link-level segment length geometry carried by the unified coding information, the event distance is mapped to the corresponding passive optical asset node; Based on the passive optical asset nodes obtained from the mapping, locate the passive optical asset where the drift occurred.

6. The method for full lifecycle management of passive optical assets integrating multi-dimensional information according to claim 4, characterized in that, For passive optical paths that were not identified as suspected drift ports, i.e., those with the same number during calibration, the following verification operations are also performed: Trigger optical time-domain reflectometry to obtain the event distance; Based on the link-level segment length geometry carried by the unified coding information, the event distance is mapped to the corresponding passive optical asset node; In response to the discrepancy between the mapped passive optical asset node and the passive optical asset of the passive optical path recorded in the network topology location information, it is determined that there is a drift in the unidentified connection relationship in the balancing, and the connection relationship is corrected based on the mapped passive optical asset node.

7. The method for full lifecycle management of passive optical assets integrating multi-dimensional information according to claim 1, characterized in that, Also includes: The verification results are periodically compared with the usage status information in the multidimensional information record. In response to the continuous inconsistency between the verification results and the usage status information and the absence of an in-transit maintenance work order associated with the corresponding passive optical asset, an automatic verification type maintenance work order is created and dispatched.

8. The method for full lifecycle management of passive optical assets integrating multi-dimensional information according to claim 1, characterized in that, For purely passive assets that are not connected to active devices at either end and cannot be verified by the operating status of the active devices, the following proactive verification operation is also performed: The duration during which the purely passive assets are not touched by maintenance work orders is recorded; in response to the duration exceeding a preset duration threshold, an automatic verification type maintenance work order is created for the purely passive assets and dispatched. In response to the on-site verification results returned by the verification type maintenance work order, update the usage status information and connection relationship of the pure passive asset in the multidimensional information record.

9. The method for full lifecycle management of passive optical assets integrating multi-dimensional information according to claim 1, characterized in that, In S4, In response to the work order type being scrapped, the downstream asset of the passive optical asset is determined based on the network topology location information, and the downstream asset is determined to be occupied based on the operating status of the active device corresponding to the downstream asset. In response to the fact that none of the downstream assets are occupied, the resources occupied by the passive optical asset and the downstream assets are released to the available resource pool; In response to the existence of occupied downstream assets, the corresponding resources are retained and the occupied downstream assets are marked as pending migration.

10. A passive optical asset lifecycle management system integrating multi-dimensional information, characterized in that, include: The information recording module is configured to establish multi-dimensional information records for passive optical assets. The multi-dimensional information records integrate the unified coding information, geographical location information, network topology location information and usage status information of the passive optical assets, with the unified coding information as the primary key. The network topology location information represents the connection relationship between the passive optical assets and adjacent assets. The status synchronization module, connected to the information recording module, is configured to respond to the status flow of the maintenance work order and automatically synchronize and update the usage status information of the passive optical asset according to the work order type. An active verification module, connected to the information recording module, is configured to acquire the operating status of the active device corresponding to the passive optical asset, verify the connectivity and occupancy status of the passive optical path where the passive optical asset is located using the operating status of the active device, and correct the usage status information and the connection relationship based on the verification results. The full lifecycle management module, connected to the status synchronization module and the active status verification module, is configured to maintain the multi-dimensional information record based on changes in the usage status information throughout the full lifecycle of the passive optical asset from entry, use to scrapping, and release the resources occupied by the passive optical asset in response to the work order type being scrapped.

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