Method and device for determining a metro leaky cable line reconstruction scheme and electronic equipment

Abstract

This application discloses a method, apparatus, and electronic device for determining a renovation scheme for leaky cable lines in subway systems, relating to the field of communication technology. The method includes: constructing a structured dataset based on basic data of the subway system and characteristic data of leaky cable lines within the system; determining the type of leaky cable line based on the structured dataset; if the leaky cable line type is an existing, usable type, using a first preset scheme as the renovation scheme; and if the leaky cable line type is a type requiring new construction, using a second preset scheme as the renovation scheme. This application solves the technical problems of high cost, long construction period, and high risk in existing subway leaky cable line renovation schemes.

Description

Technical Field

[0001] This application relates to the field of communication technology, and more specifically, to a method, apparatus, and electronic equipment for determining a solution for the renovation of leaky cable lines in subways. Background Technology

[0002] With the large-scale construction of 5G networks and the continuous improvement of users' requirements for mobile network experience, the subway scenario, as a key and difficult point in urban mobile communication network coverage, has become a core scenario for 5G network optimization and upgrading. Special evaluation data of the subway system shows that the 5G coverage of existing subway lines in many cities is insufficient, which seriously affects the user's travel experience. Now, major cities have launched special projects for the 5G transformation of existing subway lines.

[0003] The 5G upgrade of existing subway lines has extremely unique industry characteristics and implementation difficulties: First, different lines were built at different times, and the specifications, performance, and aging of existing distributed systems (such as leaky cables and POIs (Point of Interface, combiners)) vary greatly, making it impossible to adopt a uniform upgrade solution; Second, existing lines cannot be interrupted during operation, and construction can only be carried out during the approximately 3-hour window in the early morning, which is extremely short and requires extremely high construction efficiency; Third, existing equipment is densely packed in tunnels, requiring high protection of finished products, and construction space is limited, making safety management difficult, and even the slightest carelessness can affect the safety of subway operations; Fourth, the upgrade needs to take into account the compatibility of the operator's 2G / 4G / 5G full-band requirements with the subway's PIS (Passenger Information System) private network system, resulting in high technical complexity; Fifth, traditional upgrade models have the problem of "one-size-fits-all" approaches, which can easily lead to resource waste, excessive costs, and lengthy construction periods.

[0004] In the current technology, the 5G transformation of existing subway lines in the industry mostly adopts a single solution of "building a new leaky cable distribution system for the entire line" or a piecemeal transformation mode based solely on experience. It lacks systematic preliminary assessment, differentiated solution design, and a full-process digital management and control system, resulting in high transformation costs, uncontrollable construction period, prominent safety risks, and inconsistent transformation effects. As a result, it cannot adapt to the actual conditions of different lines and is difficult to meet the operational requirements of the subway system.

[0005] There is currently no effective solution to the above problems. Summary of the Invention

[0006] This application provides a method, apparatus, and electronic equipment for determining a subway leaky cable line renovation scheme, so as to at least solve the technical problems of high cost, long construction period, and high risk in the existing subway leaky cable line renovation schemes.

[0007] According to one aspect of this application, a method for determining a renovation scheme for a subway leaky cable line is provided, comprising: constructing a structured dataset based on basic data of the subway system and characteristic data of leaky cable lines in the subway system, wherein the structured dataset includes the physical and transmission characteristics of the leaky cable lines, construction conditions of the leaky cable lines, network coverage requirements, construction schedule constraints, and investment cost constraints; determining the type of leaky cable line based on the structured dataset, wherein the type is an existing type that can be used or a type that needs to be newly built; when the type of the leaky cable line is an existing type that can be used, using a first preset scheme as the renovation scheme for the leaky cable line, wherein the first preset scheme includes operation steps for preset equipment matching, impedance matching optimization, abnormal joint replacement, performance optimization, and construction design; when the type of the leaky cable line is a type that needs to be newly built, using a second preset scheme as the renovation scheme for the leaky cable line, wherein the second preset scheme includes operation steps for component matching, component installation, construction design, evolution design, and scenario-differentiated adaptation, wherein the components include leaky cable and preset equipment.

[0008] Optionally, before constructing a structured dataset based on the basic data of the subway system and the characteristic data of the leaky cable lines in the subway system, the method for determining the subway leaky cable line renovation scheme also includes: collecting the subway system's line construction data, leaky cable line distribution data, and operator network requirements to obtain the basic data of the subway system; collecting the physical characteristics and transmission characteristics of the leaky cable lines to obtain the characteristic data of the leaky cable lines, wherein the physical characteristics include cable specifications, slotting method, manufacturer, service life, and physical integrity, and the transmission characteristics include transmission loss, standing wave ratio, and connector performance.

[0009] Optionally, determining the type of leaky cable line based on a structured dataset includes: determining L index scores for the leaky cable line based on the structured dataset, where L is a positive integer; performing a weighted summation of the L index scores for the leaky cable line to obtain a target score for the leaky cable line; and determining the type of leaky cable line based on the target score.

[0010] Optionally, L index scores for the leaky cable line are determined based on the structured dataset, including: determining a first index score based on the physical and transmission characteristics of the leaky cable line in the structured dataset; determining a second index score based on the construction conditions of the leaky cable line in the structured dataset; determining a third index score based on the network coverage requirements in the structured dataset; determining a fourth index score based on the construction schedule constraints in the structured dataset; and determining a fifth index score based on the investment cost constraints in the structured dataset. The first, second, third, fourth, and fifth index scores are then used as the L index scores for the leaky cable line.

[0011] Optionally, after selecting the first / second preset scheme as the renovation scheme for the leaky cable line, the method for determining the renovation scheme for the subway leaky cable line further includes: creating a construction task flow for the leaky cable line in a preset digital platform based on the renovation scheme; and performing control operations on the construction process of the renovation scheme based on the construction task flow. The control operations include at least: safety control operations for controlling construction personnel who have passed technical tests, construction approval processes, visual construction screens, and construction tools; quality control operations for controlling construction techniques, construction quality, and construction problems; and efficiency control operations for controlling construction procedures, construction progress, and construction materials.

[0012] Optionally, after using the first / second preset scheme as the renovation scheme for the leaky cable line, the method for determining the renovation scheme for the subway leaky cable line further includes: when the construction progress of the renovation scheme indicates that the current construction section has been completed, performing segmented acceptance operations on the construction results of the current construction section, wherein the leaky cable line includes P construction sections, where P is a positive integer; when the construction progress of the renovation scheme indicates that all construction sections have been completed, performing full-section acceptance operations on the construction results corresponding to the P construction sections.

[0013] Optionally, the acceptance operation can be a segmented acceptance operation or a full-section acceptance operation. The acceptance indicators include: electrical performance indicators, including third-order intermodulation suppression, VSWR, isolation between frequency bands, and power loss of preset equipment; network coverage performance indicators, including network coverage, average download speed, signal receiving power, signal-to-noise ratio, and signal duration dwell ratio; compatibility indicators, used to characterize the transmission quality of preset subway signals in the modified leaky cable line; and safety indicators, used to characterize the compliance of component construction.

[0014] According to another aspect of this application, a device for determining a renovation scheme for a subway leaky cable line is also provided, comprising: a first determining unit, used to construct a structured dataset based on basic data of the subway system and characteristic data of leaky cable lines in the subway system, wherein the structured dataset includes physical and transmission characteristics of the leaky cable lines, construction conditions of the leaky cable lines, network coverage requirements, construction schedule constraints, and investment cost constraints; a second determining unit, used to determine the type of the leaky cable line based on the structured dataset, wherein the type is an existing type that can be used or a type that needs to be newly built; a third determining unit, used to select a first preset scheme as the renovation scheme for the leaky cable line when the type of the leaky cable line is an existing type that can be used, wherein the first preset scheme includes operation steps of preset equipment matching, impedance matching optimization, abnormal joint replacement, performance optimization, and construction design; and a fourth determining unit, used to select a second preset scheme as the renovation scheme for the leaky cable line when the type of the leaky cable line is a type that needs to be newly built, wherein the second preset scheme includes operation steps of component matching, component installation, construction design, evolution design, and scenario-differentiated adaptation, wherein the components include leaky cable and preset equipment.

[0015] According to another aspect of this application, a computer program product is also provided, which stores a computer program, wherein the method for determining the subway leaky cable line renovation scheme by controlling the computer program product to execute any of the above-mentioned methods when the computer program is running is provided.

[0016] According to another aspect of this application, an electronic device is also provided, wherein the electronic device includes one or more processors and a memory for storing one or more programs, wherein when the one or more programs are executed by the one or more processors, the one or more processors implement the method for determining the subway leaky cable line renovation scheme as described above.

[0017] In this application, a structured dataset is first constructed based on the basic data of the subway system and the characteristic data of the leaky cable lines in the subway system. The structured dataset includes the physical and transmission characteristics of the leaky cable lines, the construction conditions of the leaky cable lines, the network coverage requirements, the schedule constraints, and the investment cost constraints. Then, based on the structured dataset, this application determines the type of leaky cable line, which is either an existing type that can be used or a type that needs to be newly built. Subsequently, if the type of the leaky cable line is an existing type that can be used, a first preset scheme is used as the transformation scheme for the leaky cable line. The first preset scheme includes the operation steps of preset equipment matching, impedance matching optimization, abnormal joint replacement, performance optimization, and construction design. If the type of the leaky cable line is a type that needs to be newly built, a second preset scheme is used as the transformation scheme for the leaky cable line. The second preset scheme includes the operation steps of component matching, component installation, construction design, evolution design, and scenario-differentiated adaptation. The components include leaky cables and preset equipment.

[0018] As can be seen from the above, this application adopts a multi-dimensional quantitative evaluation and classification decision-making approach. By constructing a structured dataset covering the physical and transmission characteristics of leaky cables, construction conditions, network coverage requirements, construction period constraints, and investment costs, it accurately identifies whether leaky cable lines are of the usable old type or require new construction. This achieves the goal of matching suitable renovation schemes for different lines, thereby realizing the technical effects of differentiated and precise design of renovation schemes and efficient use of resources. It avoids a one-size-fits-all renovation model and solves the technical problems of high cost, long construction period, and high risk in existing subway leaky cable line renovation schemes. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0020] Figure 1 This is a flowchart of an optional method for determining a subway leaky cable line modification scheme according to an embodiment of this application;

[0021] Figure 2 This is a flowchart of an optional method for retrofitting an existing leaky cable of a legacy type according to an embodiment of this application;

[0022] Figure 3 This is a flowchart of an optional method for modifying an existing leaky cable of a new type according to an embodiment of this application;

[0023] Figure 4 This is a schematic diagram of a device for determining an optional subway leaky cable line modification scheme according to an embodiment of this application;

[0024] Figure 5 This is a structural block diagram of an electronic device according to an embodiment of this application. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0026] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0027] It should also be noted that all information and data (including but not limited to information used for display and analysis) involved in this application are authorized by the user or fully authorized by all parties. For example, if there is an interface between this system and the relevant user or organization, before obtaining the relevant information, it is necessary to send a request to the aforementioned user or organization through the interface, and obtain the relevant information only after receiving consent from the aforementioned user or organization.

[0028] Furthermore, the collection, storage, use, processing, transmission, provision, disclosure, and application of relevant information and data involved in this application all comply with the relevant laws, regulations, and standards of the relevant regions, and necessary security measures have been taken. They do not violate public order and good morals. In addition, this application provides corresponding operation entry points for users to choose to agree to authorization or refuse authorization. If the user chooses to refuse authorization, the corresponding expert decision-making process will be initiated.

[0029] In one alternative embodiment, a new leaky cable renovation scheme is provided, which involves removing the existing old leaky cables and distribution equipment, and building a new 5 / 4” leaky cable distribution system and supporting POI and power supply equipment along the entire line. This scheme does not consider the feasibility of reusing the existing system, adopts a unified new construction model, and is suitable for the complete renovation of old lines.

[0030] In one optional embodiment, a local coverage enhancement scheme is provided, which targets 5G weak coverage areas by adding miniaturized antennas, coverage enhancers and other equipment to enhance 5G coverage in local areas. This scheme can only solve local coverage problems and cannot achieve overall performance improvement of the entire 5G network, nor can it solve the core problem that the original system does not support 5G high-frequency bands.

[0031] In one alternative embodiment, a POI device replacement scheme is provided, which simply replaces the original POI device with a new POI that supports the 5G frequency band, making use of the original leaky cable system. However, this scheme lacks a systematic evaluation of the original leaky cable transmission performance and does not solve problems such as the leaky cable cutoff frequency limitation and excessive transmission loss. It is prone to problems such as the inability to effectively transmit 5G high-frequency signals and the failure to meet coverage standards.

[0032] In one alternative embodiment, a traditional construction management model is provided, which adopts a traditional construction management method of manual briefing, manual recording, and offline approval. This method relies on the experience of on-site management personnel, the construction process is invisible and untraceable, safety and quality issues are difficult to detect and close in a timely manner, the utilization rate of the time window is low, and the construction efficiency and control effect are poor.

[0033] The technical defects of the above embodiments are summarized as follows:

[0034] (1) The "one-size-fits-all" approach fails to consider the performance differences of existing systems on different lines. Either the entire line is newly built, resulting in extremely high renovation costs, long construction periods, and high construction difficulty, or the existing systems are blindly reused, leading to substandard 5G coverage after renovation. It is impossible to achieve a balance between cost, construction period, and coverage effect. The purpose of this invention is to establish a scientific quantitative evaluation system, formulate differentiated renovation plans for different lines, achieve "one policy for each line", and take into account renovation costs, construction period, and coverage performance.

[0035] (2) There is a lack of systematic and quantitative evaluation methods for existing leaky cable systems, insufficient understanding of the high-frequency transmission characteristics of leaky cables, and the inherent understanding that "the nominal cutoff frequency is the upper limit of transmission" prevents the efficient reuse of existing leaky cables, resulting in a waste of a large amount of reusable resources. The purpose of this invention is to establish a multi-dimensional quantitative evaluation method for existing leaky cables, break through the technical understanding of leaky cable transmission beyond the cutoff frequency, maximize the reuse of existing systems, and significantly reduce the cost and time of renovation.

[0036] (3) The digitalization level of subway construction management is low, the construction process is invisible and untraceable, safety control, quality control, and progress control heavily rely on manual labor, the utilization rate of maintenance windows is low, construction efficiency is low, and problems such as safety accidents, quality defects, and project delays are prone to occur, making it unsuitable for the stringent management requirements of existing subway line renovation. The purpose of this invention is to construct a digital management and control system covering the entire construction process, realize the three-in-one management and control of safety, quality, and efficiency, improve the level of refined construction management, and ensure zero safety accidents, high-quality delivery, and controllable project schedule.

[0037] In view of the technical defects existing in the above embodiments, the technical problems to be solved by the present invention are summarized as follows:

[0038] (1) The solution to the problem of the one-size-fits-all approach to 5G transformation of existing subway lines in the industry does not take into account the differences between existing systems of different lines, resulting in high transformation costs, waste of resources, long construction period, or blindly using old systems, which leads to substandard coverage.

[0039] (2) To solve the problem that existing technologies lack a systematic quantitative evaluation method for existing subway leaky cable systems, making it impossible to scientifically judge the feasibility of reusing leaky cables, and limiting the ability to maximize the utilization of existing resources due to inherent technological knowledge.

[0040] (3) Solve the problems of low digitalization in the traditional construction management mode of subway existing line renovation, the construction process is invisible and untraceable, the safety risk control is difficult, the utilization rate of the time window is low, and the construction efficiency is low.

[0041] (4) To address the problems of inconsistent acceptance standards and substandard indicators in existing renovation projects, the lack of standardized closed-loop optimization processes, uneven renovation results, and unstable network performance.

[0042] (5) To address the problems of poor replicability of existing renovation plans and management models, lack of standardized and scalable 5G renovation implementation system for existing subway lines, and repeated trial and error in projects.

[0043] This invention focuses on the entire lifecycle of 5G upgrades for existing subway lines, constructing five core modules: a five-dimensional quantitative evaluation system, a dual-mode differentiated upgrade plan, a three-in-one digital construction management and control system, standardized acceptance closed-loop optimization, and full-cycle data accumulation and reuse. This forms a complete method for differentiated implementation and full-process digital management of 5G upgrades for existing subway lines. This technical solution takes scientific management and control throughout the entire lifecycle as its main approach. First, it clarifies the line's suitability through quantitative evaluation, then develops targeted differentiated upgrade plans, ensures safety, quality, and efficiency throughout the construction process through digital management and control, and finally ensures the upgrade results meet standards through standardized acceptance and optimization. Simultaneously, it achieves the accumulation and reuse of project experience, forming a replicable standardized implementation system.

[0044] The present invention will now be described in detail with reference to various embodiments.

[0045] Example 1

[0046] According to an embodiment of this application, an embodiment of a method for determining a subway leaky cable line renovation scheme is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0047] This application provides a system for determining a subway leaky cable line renovation scheme (hereinafter referred to as the renovation system) for executing the subway leaky cable line renovation scheme determination method in this application. Figure 1 This is a flowchart illustrating an optional method for determining a subway leaky cable line modification scheme according to an embodiment of this application, such as... Figure 1 As shown, the method includes the following steps:

[0048] Step S101: Construct a structured dataset based on the basic data of the subway system and the characteristic data of the leaky cable lines in the subway system. The structured dataset includes the physical and transmission characteristics of the leaky cable lines, the construction conditions of the leaky cable lines, the network coverage requirements, the schedule constraints, and the investment cost constraints.

[0049] Optionally, before constructing the structured dataset, the system first collects the subway system's line construction data, leaky cable distribution data, and operator network requirements to obtain basic information about the subway system. Then, it collects the physical and transmission characteristics of the leaky cable to obtain characteristic data of the leaky cable. The physical characteristics include cable specifications, slotting method, manufacturer, service life, and physical integrity, while the transmission characteristics include transmission loss, VSWR, and connector performance.

[0050] Optionally, the transformation system addresses the technical bottlenecks of traditional technologies, such as reliance on manual experience, fragmented data, and subjective evaluation, through the aforementioned steps. By systematically collecting and creating multi-dimensional structured datasets, it achieves objective quantification of the adaptability of each subway line for transformation. This transforms the previously vague judgment of whether existing leaky cable lines can be reused into comparable and calculable numerical indicators, shifting decision-making from experience-driven to data-driven. It provides a unique, tamper-proof, and traceable data foundation for subsequent scheme matching. At the same time, the structured dataset supports auditing and review, and subsequent transformations of similar lines can directly access historical data, reducing the cost of repeated surveys and thus improving the standardization of project management.

[0051] Step S102: Determine the type of leaky cable line based on the structured dataset, wherein the type is either an existing type that is available or a type that needs to be newly created.

[0052] Optionally, the "existing type" refers to the type of existing leaky cable lines that, after multi-dimensional evaluation, can continue to be used without being dismantled, provided that their physical structure is intact, their high-frequency transmission performance meets the standards, their construction conditions are permissible, and their economics are reasonable, and only require local optimization. The "new type" refers to the type of existing leaky cable lines that, after multi-dimensional evaluation, have severely degraded high-frequency transmission performance, are physically aged, have a grooving method that does not support the transmission of 5G high-frequency signals, have extremely unfavorable construction conditions, and cannot meet basic coverage requirements, and must be completely replaced.

[0053] Optionally, the transformation system determines the scores of five indicators corresponding to the leaky cable line based on the five-dimensional structured data in the structured dataset, namely physical and transmission characteristics, construction conditions of the leaky cable line, network coverage requirements, construction schedule constraints, and investment cost constraints. This includes the scores of the first, second, third, fourth, and fifth indicators. Subsequently, the transformation system performs a weighted summation of the five indicator scores corresponding to the leaky cable line to obtain the target score of the leaky cable line. Based on the target score of the leaky cable line, the feasibility of reusing the leaky cable line is determined, and the type of leaky cable line is obtained.

[0054] Optionally, the upgrade system addresses the traditional one-size-fits-all upgrade model through the above steps, establishing a classification mechanism for leaky cable lines based on multi-dimensional structured data. In practical applications, the upgrade system clearly distinguishes between two types of lines by quantifying thresholds (such as loss ≤12dB / 100m and VSWR ≤1.5), eliminating subjective misjudgments and ensuring the safety and effectiveness of the reuse scheme. The classification results directly drive the selection of subsequent schemes, thereby reducing the communication costs and decision-making risks in the early stages of the project.

[0055] Step S103: If the leaky cable line is of the old type that can be used, the first preset scheme is used as the modification scheme for the leaky cable line. The first preset scheme includes the operation steps of preset equipment matching, impedance matching optimization, abnormal connector replacement, performance optimization and construction design.

[0056] Optionally, for existing leaky cables of usable older types (i.e., the first preset scheme), the system adopts a technical approach of "reusing existing leaky cables + replacing special POIs + link optimization + signal debugging," which eliminates the need to lay new leaky cables and maximizes the use of existing resources. Figure 2 This is a flowchart of an optional method for retrofitting existing leaky cables of a legacy type according to an embodiment of this application, such as... Figure 2 As shown, the method includes operational steps such as preset equipment matching, impedance matching optimization, abnormal connector replacement, performance optimization, and construction design, specifically including:

[0057] (1) Pre-set equipment matching: The POI equipment (i.e., the pre-set equipment) for public-private network integration is customized. The system is modified according to the difference of PIS private network frequency band in the underground / elevated section of the leaky cable line. 14 special POI models for public-private network integration are selected, including full-frequency type I for underground section, full-frequency type II for elevated section, low-frequency transparent transmission type for existing system reuse, and low-frequency & PIS transparent transmission type. This realizes the integrated access of the operator's 2G / 4G / 5G full frequency band and the subway PIS private network frequency band. At the same time, it ensures the high isolation between public and private networks and avoids mutual interference. In addition, the POI adopts a two-level integrated architecture design with separate uplink and downlink. The size is completely matched with the original POI, realizing in-situ replacement without additional drilling modification.

[0058] (2) Impedance matching optimization: In order to achieve transmission optimization of the leaky cable beyond the cutoff frequency, the system is modified for the leaky cable with a nominal cutoff frequency of 3GHz. Through link budget optimization, adaptive power compensation and impedance matching debugging, the stable transmission of 3.3-3.6GHz 5G high-frequency signals in the existing leaky cable is achieved. According to the length of the leaky cable section, the output power of 5G high-frequency signals in the POI is adjusted in stages to compensate for transmission loss and ensure that the signal power at the end of the leaky cable meets the coverage requirements.

[0059] (3) Rectification and optimization of existing links: The system will conduct full-segment inspection of existing leaky cable links, replace and rectify abnormal joints with aging and high loss, and investigate and optimize sections with excessive VSWR, thereby reducing link loss and signal reflection, ensuring that the VSWR of the entire link is ≤1.3 and the third-order intermodulation suppression is ≤-140dBc.

[0060] (4) Performance optimization: For special scenarios such as weak coverage sections, curves, and intersections in the tunnel, the coverage performance is optimized and improved by adjusting the POI signal parameters, optimizing the fixed angle of the leaky cable, and adding small supplementary equipment, so as to ensure that the 5G coverage indicators of the entire line meet the standards.

[0061] (5) Construction design: Utilize existing equipment installation locations to achieve in-situ replacement, significantly reducing the amount of construction and the difficulty of protecting finished products. Formulate a "single-section single-day closed-loop" construction procedure, and complete the POI replacement, joint rectification, index testing, site cleaning and other procedures within a single skylight, maximizing the use of skylight time and significantly shortening the overall construction period.

[0062] Optionally, the upgrade system achieves a minimally invasive transformation of the existing leaky cable system through the above steps, breaking through the traditional misconception that the cutoff frequency of the leaky cable is the limit. Through impedance matching and power compensation, the upgrade system enables the leaky cable with a nominal cutoff frequency of 3.0GHz to stably transmit 3.6GHz signals, achieving high-frequency over-limit transmission and avoiding demolition and reconstruction. By replacing abnormal joints, the system avoids the large-scale project of "replacing the entire cable line", reducing the number of work sites and shortening the construction period. During the performance optimization process, coverage improvement is achieved through software parameter adjustments, reducing construction complexity and interference with subway operations.

[0063] Step S104: If the leaky cable line type is a new type that needs to be built, the second preset scheme is used as the transformation scheme for the leaky cable line. The second preset scheme includes operation steps such as component matching, component installation, construction design, evolution design and scenario-differentiated adaptation. The components include leaky cable and preset equipment.

[0064] Optionally, for existing leaky cable upgrade schemes requiring new construction (i.e., the second preset scheme), the system adopts the core technical approach of "building a new high-performance leaky cable distribution system + supporting POI equipment + end-to-end optimization" to construct a brand-new public-private network converged 5G coverage system, taking into account both 5G coverage and the future evolution requirements of 5G-A. Figure 3 This is a flowchart of an optional method for modifying an existing leaky cable of a new type according to an embodiment of this application, such as... Figure 3 As shown, this method includes operational steps such as component matching, component installation, construction design, evolution design, and scenario-differentiated adaptation, specifically including:

[0065] (1) Component matching: that is, to select and design the leaky cable and system, select a low-loss 5 / 4” leaky cable that supports the 3.3-3.6GHz high frequency band, optimize the slot design, improve the uniformity of 5G signal coverage, and at the same time take into account the transmission performance of 2G / 4G full frequency band; design a multi-system POI device to adapt to the new system, integrate the operator's full frequency band signals, and realize multi-system combined transmission.

[0066] (2) Component installation design: Based on the tunnel cross section and traffic clearance requirements, design the leaky cable bracket installation scheme to ensure that the leaky cable installation position does not intrude into the traffic clearance, while ensuring signal coverage effect; optimize the installation process of leaky cable joints and fixing clamps to ensure that the link performance meets the standards and is suitable for the tunnel vibration environment.

[0067] (3) Construction design: Based on the time window, the construction section is divided and a detailed flow construction plan is formulated. The process of bracket installation, cable laying, joint making, equipment installation, index testing and other processes are divided into different time window cycles, and the time nodes and quality requirements of each process are clarified. Strict finished product protection measures are established to avoid damage to the existing subway operating equipment and cables during construction. The method of phased opening and phased testing is adopted to promptly identify and solve problems and ensure the overall construction period.

[0068] (4) Evolution design: The new solution reserves the frequency band support capability and equipment installation space for 6G evolution, ensuring that subsequent network upgrades do not require large-scale modifications and extend the service life of the system.

[0069] (5) Subdividing scenario differentiation and implementing scenario differentiation adaptation: For different sections within the same line, further subdividing scenario adaptation schemes are implemented: for underground tunnel sections, the focus is on optimizing signal transmission and isolation performance; for elevated sections, the focus is on strengthening anti-interference and protection performance; for station hall / platform sections, a coverage scheme combining distributed systems and indoor antennas is adopted; and for depot / parking lot sections, a scheme combining outdoor macro stations and indoor distribution is adopted to achieve accurate adaptation across the entire line and all scenarios.

[0070] Optionally, the upgrade system addresses the technical bottlenecks of traditional new construction schemes, such as uniform construction and neglect of scenario-specific differences, through the aforementioned steps. It achieves systematic, forward-looking, and refined new construction design. Through component matching and evolution design, the upgrade system ensures that newly built leaky cable lines can meet the evolution requirements of 5G-A, avoiding multiple upgrades in a short period. By matching construction design with maintenance windows, it achieves "daily completion," improving maintenance window utilization and ensuring controllable construction schedule. Through scenario-specific adaptation, it ensures the consistency of signal coverage capabilities of leaky cable line sections in different scenarios, avoiding the problem of uneven signal distribution with some areas being strong and others weak, thus improving the overall user experience of the subway system.

[0071] As can be seen from the above, this application adopts a multi-dimensional quantitative evaluation and classification decision-making approach. By constructing a structured dataset covering the physical and transmission characteristics of leaky cables, construction conditions, network coverage requirements, construction period constraints, and investment costs, it accurately identifies whether leaky cable lines are of the usable old type or require new construction. This achieves the goal of matching suitable renovation schemes for different lines, thereby realizing the technical effects of differentiated and precise design of renovation schemes and efficient use of resources. It avoids a one-size-fits-all renovation model and solves the technical problems of high cost, long construction period, and high risk in existing subway leaky cable line renovation schemes.

[0072] In one optional embodiment, before constructing a structured dataset based on the basic data of the subway system and the characteristic data of the leaky cable lines in the subway system, the transformation system first collects the subway system's line construction data, leaky cable line distribution data, and operator network requirements to obtain the basic data of the subway system. Then, it collects the physical characteristics and transmission characteristics of the leaky cable lines to obtain the characteristic data of the leaky cable lines. The physical characteristics include cable specifications, slotting method, manufacturer, service life, and physical integrity, while the transmission characteristics include transmission loss, VSWR, and connector performance.

[0073] Optionally, the upgrade system first collects basic information about the leaky cable lines to be upgraded, including line construction data, leaky cable line distribution data, and operator network requirements. Then, the upgrade system collects the physical and transmission characteristics of the leaky cable lines to obtain characteristic data of the leaky cable lines. This provides a data foundation for creating a five-dimensional structured dataset that includes the physical and transmission characteristics of the leaky cable lines, construction conditions of the leaky cable lines, network coverage requirements, schedule constraints, and investment cost constraints.

[0074] Optionally, through the steps in the above embodiments, the transformation system systematically collects basic data of the subway system and characteristic data of leaky cable lines, realizing a quantitative, objective, and reproducible assessment input for the preconditions for 5G transformation of existing subway lines. This solves the problem of misjudgment caused by traditional experience-based judgment: traditional transformation schemes often rely on the subjective judgment of on-site personnel. For example, if a leaky cable looks new, it is determined that the leaky cable can be reused. The transformation system, through structured collection of data such as cable specifications, grooving methods, and measured losses, changes the basis for judgment from subjective judgment to measured values, avoiding the waste of resources caused by blindly building new leaky cables due to misjudging old ones, or failing to reuse old leaky cables due to misjudging usable ones. The transformation system provides a reliable data foundation for the subsequent classification of leaky cables of usable old types or types that need to be newly built through unified collection standards.

[0075] In one optional embodiment, in the process of determining the type of leaky cable line based on a structured dataset, the modification system first determines L index scores of the leaky cable line based on the structured dataset, where L is a positive integer. Then, the L index scores of the leaky cable line are weighted and summed to obtain the target score of the leaky cable line. Subsequently, the type of leaky cable line is determined based on the target score of the leaky cable line.

[0076] Optionally, determining the L index scores for a leaky cable line based on a structured dataset refers to determining the first index score based on the physical and transmission characteristics of the leaky cable line in the structured dataset; determining the second index score based on the construction conditions of the leaky cable line; determining the third index score based on network coverage requirements; determining the fourth index score based on construction schedule constraints; determining the fifth index score based on investment cost constraints; and summing the first, second, third, fourth, and fifth index scores to obtain L (i.e., five) index scores.

[0077] Optionally, the weight of the first indicator score is 40%; the weight of the second indicator score is 25%; the weight of the third indicator score is 15%; the weight of the fourth indicator score is 0%; and the weight of the fifth indicator score is 10%. The weight of the indicator scores can be dynamically adjusted based on the actual application scenario of the subway system.

[0078] Optionally, the system can be rewritten to adapt to multi-dimensional structured data and quantitatively evaluate the feasibility score (i.e., target score) of leaky cable lines. This establishes a five-dimensional quantitative evaluation system covering all elements of leaky cable lines, providing accurate and quantifiable decision-making basis for differentiated renovation scheme design. This avoids the problem of unreasonable renovation schemes caused by empiricism. The specific implementation steps and evaluation content are as follows:

[0079] (1) The assessment implementation process includes: conducting on-site surveys and instrument testing, and collecting multi-dimensional structured data; then, quantifying and scoring the structured data of each dimension (out of 100 points) to form a comprehensive assessment report for each line, which includes the target score for the leaky cable line; finally, based on the assessment results, clarifying the technical route adaptability of the line renovation, classifying the existing types that can be used and the types that need to be newly built, and providing a scientific decision-making basis for the design of the renovation plan.

[0080] (2) The five dimensions of evaluation and quantitative indicators are as follows:

[0081] Physical and transmission characteristics of leaky cable: Core evaluation indicators include cable specifications (e.g., 13 / 8”, 5 / 4”), slotting method (straight slot / U-shaped slot / figure-eight slot), manufacturer, service life, physical integrity (sheath damage, connector aging), nominal cutoff frequency, measured full-band transmission loss (800MHz-3.6GHz), link VSWR, connector performance, existing POI equipment specifications, and installation space. Among these, the core key indicators are the measured transmission loss in the 3.3-3.6GHz 5G high-frequency band, as well as the cable slotting method and physical integrity, which directly determine the feasibility of reusing leaky cables.

[0082] Line construction conditions dimension: Core evaluation indicators include tunnel type (underground / elevated / ground section), tunnel cross-sectional dimensions, existing equipment installation space, daily available maintenance window duration, material handling routes and difficulties, station equipment room layout, finished product protection requirements (density of existing equipment), and subway operator's construction approval process and cooperation requirements. This dimension directly determines the construction difficulty, schedule planning, and construction organization methods.

[0083] Network coverage requirements dimension: Core evaluation indicators include the average daily passenger flow density of the line, station type (transfer station / regular station), operator 5G coverage requirements (RSRP (Reference Signal Received Power), SINR (Signal-to-Interference-plus-Noise Ratio), coverage rate, download speed), subway PIS private network frequency band and compatibility requirements, and frequency band reservation requirements for future 5G-A evolution. This dimension determines the performance goals and technology selection standards of the transformation plan.

[0084] Schedule and time constraints: Core evaluation indicators include the overall project delivery time requirements, the number of daily workable sections, line operation guarantee requirements (work stoppage requirements for major events and holidays), and the coordination difficulty of multi-disciplinary cross-construction. This dimension affects the construction organization plan and resource input planning.

[0085] Investment and cost constraints (weight 10%): Core evaluation indicators include the overall project investment budget, the co-construction and sharing model of the three operators, the total life cycle cost of the transformation (construction cost + operation and maintenance cost), and expected investment returns. This dimension affects the economic selection of the solution and the cost control target.

[0086] (3) Scheme adaptability judgment criteria, including: based on the evaluation results of multi-dimensional structured data, formulate clear technical route judgment criteria. For example, for leaky cable with a single-slot / U-shaped slot structure, nominal cutoff frequency ≥ 2.7 GHz, measured transmission loss ≤ 12 dB / 100 m in the 3.3-3.6 GHz band, link VSWR ≤ 1.5, intact physical structure, and complex construction conditions and short window time, it is judged as an old type of leaky cable line that can be used; for leaky cable with old specifications, slotting method that is not suitable for high frequency transmission, measured transmission loss in the 3.3-3.6 GHz band that is too large, long service life, serious physical aging, and cannot meet the requirements of 5G high frequency transmission, it is judged as a type of leaky cable line that needs to be newly built. Then, the transformation system customizes the transformation scheme based on the type of leaky cable line, so as to achieve a balance between transformation cost, construction period, coverage effect and construction difficulty.

[0087] In one optional embodiment, after using the first preset scheme / second preset scheme as the renovation scheme for the leaky cable line, the renovation system first creates a construction task flow for the leaky cable line in a preset digital platform based on the renovation scheme. Then, based on the construction task flow, the system performs control operations on the construction process of the renovation scheme for the leaky cable line. The control operations include at least: safety control operations, used to control construction personnel who have passed technical tests, construction approval processes, visual construction screens, and construction tools; quality control operations, used to control construction technology, construction quality, and construction problems; and efficiency control operations, used to control construction procedures, construction progress, and construction materials.

[0088] Optionally, the renovation system adopts a digital management and control method for the entire construction process of existing subway lines with safety as the core. In response to the technical pain points of short construction windows, high safety risks, and difficulty in protecting finished products in the construction of existing subway lines, the ISDP (Intelligent Construction and Delivery Platform) digital platform is used to build a three-in-one digital construction task flow of "safety-quality-efficiency" to achieve visibility, manageability, controllability, and traceability of the entire construction process.

[0089] Optionally, the control content of the safety management operation is as follows:

[0090] (1) Digital management of personnel access: Establish a pre-set list system for existing line construction personnel. All construction personnel must complete subway safety training and pass the assessment before being included in the pre-set list. The digital platform is used to verify the identity of personnel and manage access based on the pre-set list, so as to prevent unqualified and untrained construction personnel from entering the construction site.

[0091] (2) Digital management of technical briefing: Digital technical briefing documents are produced by section and process, including videos, pictures and texts, three-dimensional models, etc., and pushed to all construction personnel through digital platform to complete online briefing and online assessment. The briefing record is kept throughout the process to ensure that technical and safety requirements are covered to front-line team leaders and workers, and to prevent safety and quality problems caused by inadequate briefing.

[0092] (3) Digitalized workflow for construction approval: All construction approval processes, such as construction plans, hot work, power outage applications, and line blockade applications, are processed and approved online through a digital platform. Approval records are traceable throughout the process, preventing construction without approval and illegal operations.

[0093] (4) On-site safety visualization and control: Using the ISDP digital platform, on-site construction images and safety control actions can be uploaded in real time through the smart terminals of on-site workers. Managers can remotely view the construction situation in the tunnel in real time, promptly discover violations and safety hazards, and realize remote supervision and immediate rectification. Safety inspections, hazard investigations, and rectification loops during the construction process are all completed online through the platform, forming a safety control loop.

[0094] (5) Safety management of construction tools: Combining RFID (Radio Frequency Identification) technology, we will carry out full-process digital management of construction tools, realize automatic inventory and ledger recording of tools entering and leaving the site, prevent traffic safety accidents caused by tools being left in the tunnel, and realize digital closed-loop management of tool safety.

[0095] Optionally, the control content of the quality control operation is as follows:

[0096] (1) Standardized management of construction process: The construction process standards and quality acceptance standards are visualized and published through the digital platform to ensure that on-site construction personnel strictly follow the standard operation; for key processes (such as leaky cable joint making, POI equipment installation, and cable laying), process samples are implemented first. Sample photos and videos are uploaded through the platform, and large-scale construction can only proceed after acceptance.

[0097] (2) Digital traceability of quality inspection: Dedicated testing instruments are set up on site. After the construction is completed, the test data such as standing wave ratio, intermodulation, and signal power are uploaded to the digital platform in real time, so as to realize the testing upon completion, the uploading upon testing, and the rectification upon non-compliance, ensuring that the quality of each process is traceable and verifiable.

[0098] (3) Closed-loop management of quality issues: Dedicated quality inspectors are assigned to record on-site quality issues and issue rectification notices through the platform. After the construction team completes the rectification, the rectification certificate is uploaded online and the quality inspector reviews and accepts it, forming a closed-loop management of the discovery, rectification and review of quality issues, and eliminating the possibility of quality hazards.

[0099] Optionally, the control content of efficiency management operations is as follows:

[0100] (1) Digital arrangement of construction procedures: Based on the daily skylight time, the construction procedure arrangement is optimized through a digital platform. The procedures such as material handling, equipment installation, indicator testing, and site cleaning are arranged in a streamlined manner, and the time nodes and responsible persons of each procedure are clearly defined, thereby improving the utilization rate of skylight time and avoiding time waste caused by poor connection of procedures.

[0101] (2) Digital tracking and control of progress: The system automatically compares the planned progress with the actual progress by reporting the construction progress status daily through the platform, including the completed section, the number of installed equipment, and the rectification of problems. If there is a progress deviation, the system will issue an early warning and dynamically adjust the construction plan and resource input to ensure that the overall construction period is controllable.

[0102] (3) Digital management of materials: The project materials and equipment are digitally managed throughout their entire life cycle. From procurement, warehousing, outbound, on-site installation, and return of remaining materials to the warehouse, the entire process is recorded online to ensure that the supply of materials matches the construction progress, avoid material shortages affecting construction, and prevent material waste and loss.

[0103] In one optional embodiment, after using the first preset scheme / second preset scheme as the modification scheme for the leaky cable line, when the construction progress of the modification scheme indicates that the current construction section has been completed, the modification system performs a segmented acceptance operation on the construction results of the current construction section, wherein the leaky cable line includes P construction sections, where P is a positive integer; when the construction progress of the modification scheme indicates that all construction sections have been completed, the modification system performs a full-section acceptance operation on the construction results corresponding to the P construction sections.

[0104] Optionally, the system upgrade adopts a process of "segmented acceptance - full-line network testing - problem rectification - final completion acceptance". First, after the construction of a single construction section is completed, segmented indicator testing and acceptance are carried out to identify and rectify problems in a timely manner. After the construction of the entire line is completed, a full-line simulated train operation network test is carried out to comprehensively test the network coverage performance. For the problems found in the test, rectification is carried out according to a three-level optimization strategy. After rectification, retesting is carried out until all indicators meet the standards. Finally, the operator and the metro company are organized to carry out the project completion acceptance and complete the handover.

[0105] Optionally, the upgrade system employs a two-tiered acceptance mechanism—segmented acceptance and full-section acceptance—to shift quality control of the 5G upgrade construction process on existing subway lines from post-construction final inspection to a closed-loop process. By immediately performing segmented acceptance after the completion of each construction section, the system avoids the risks of unified testing and rework difficulties inherent in traditional methods. If the VSWR of a certain section exceeds the standard or intermodulation fails, it can be quickly repaired before the maintenance window ends or before adjacent sections are constructed, without waiting for the entire line to be completed, thereby shortening the rectification cycle and reducing rework costs. The upgrade system only initiates full-section acceptance after all sections have been completed and segmented acceptance has passed, preventing the risk of local defects being masked and leading to overall performance failure.

[0106] In one optional embodiment, the acceptance operation is either a segmented acceptance operation or a full-range acceptance operation. The acceptance indicators include: electrical performance indicators, including third-order intermodulation suppression, VSWR, isolation between frequency bands, and power loss of preset equipment; network coverage performance indicators, including network coverage, average download speed, signal received power, signal-to-noise ratio, and signal dwell time ratio; compatibility indicators, used to characterize the transmission quality of preset subway signals in the modified leaky cable line; and safety indicators, used to characterize the compliance of component construction.

[0107] Optionally, the system upgrade establishes a standardized acceptance indicator system. This system must cover at least three mandatory acceptance indicators across three dimensions: electrical performance, network coverage performance, and compatibility. Furthermore, the standardized system can also cover safety indicators as needed. The descriptions of each acceptance indicator are as follows:

[0108] (1) System electrical performance indicators: third-order intermodulation rejection (PIM) of indoor distribution system ≤ -140dBc (43dBm×2); VSWR of antenna feeder and distribution system across the entire frequency band ≤ 1.3; isolation between different system frequency bands ≥ 80dB; insertion loss of POI equipment in each frequency band meets design requirements.

[0109] (2) 5G air interface coverage performance indicators: 5G comprehensive coverage rate ≥95% (RSRP ≥-105dBm and SINR ≥3dB); 5G idle average download speed ≥300Mbps; RSRP average strength ≥-85dBm, SINR average value ≥20dB; 5G signal duration dwell ratio ≥95%.

[0110] (3) Compatibility index of private network: The signal transmission of the subway PIS private network is free from interference, packet loss and lag. The VSWR and transmission performance of the private network system meet the requirements of the subway. The transformation will not affect the normal operation of the original PIS system.

[0111] (4) Construction and safety acceptance indicators: The equipment installation meets the clearance requirements and there is no risk of encroachment; the installation process, cable laying and finished product protection meet the management requirements of the subway company; the construction data is complete, traceable and meets the acceptance and archiving requirements.

[0112] Optionally, to address the issue of substandard indicators discovered during the acceptance testing, the system modification team created a tiered optimization mechanism. This mechanism employs a three-level optimization strategy to form a closed-loop optimization process. The specific strategy details are as follows:

[0113] (1) Level 1 optimization (parameter-level optimization) strategy: If problems such as low 5G download speed, insufficient signal strength, or interference occur, the signal debugging configuration should be optimized by adjusting the output power, signal parameters, and filter matching parameters of the POI device first, so as to quickly solve the parameter adaptation problem without the need for on-site construction and adjustment.

[0114] (2) Secondary optimization (engineering-level optimization) strategy: If problems such as excessive local VSWR, excessive joint loss, or uneven local coverage occur, the performance problems caused by engineering construction and installation can be solved by on-site inspection and rectification of leaky cable joints, adjustment of POI installation position, and optimization of leaky cable fixing angle and installation position.

[0115] (3) Three-level optimization (supplementary point-level optimization) strategy: If there are problems such as excessive signal attenuation in long intervals, weak coverage at tunnel bends / intersections, and blind spots at stations, coverage enhancement can be achieved by adding supplementary POIs, miniaturized signal enhancement equipment, and local supplementary antennas, so as to solve the coverage shortcomings in special scenarios.

[0116] Optionally, the system can also use a digital platform to accumulate data throughout the entire lifecycle of construction projects. This includes accumulating renovation plans, construction parameters, cost data, optimization experience, and problem solutions for different line types, forming a solution library, experience library, cost library, and problem library for 5G renovation of existing subway lines. Subsequently, the accumulated data is analyzed and summarized to form standardized design manuals, construction specifications, and management processes. This provides standardized solution references and data support for subsequent 5G renovation projects of other subway lines or in other cities, enabling the rapid reuse and promotion of technical solutions and management experience, avoiding repeated trial and error, and improving the overall implementation level of the industry.

[0117] In summary, the technical solution of this application can achieve the following technical effects:

[0118] (1) High efficiency of cable system: The renovation of a single line by reusing existing cables can reduce investment costs, while reducing the dismantling and disposal of waste cables and equipment, realizing the intensive use of resources and environmental protection.

[0119] (2) Shorten the construction period and reduce the construction difficulty: The old-type renovation scheme does not require large-scale laying of leaky cables, reduces the total number of work points, shortens the overall construction period, and thus reduces the amount of construction work in the tunnel; at the same time, the in-situ replacement design reduces the construction content such as drilling and bracket installation, reduces the construction difficulty and finished product protection risk, and is suitable for the construction scenario of short skylights in subways.

[0120] (3) Ensure construction safety and achieve zero safety accidents: Through the full-process digital management and control system, the construction personnel, construction process and safety hazards are fully visible, traceable and controllable, which greatly improves the level of precision in safety management.

[0121] (4) Ensure the effectiveness of the renovation and improve network performance and user experience: Through differentiated solution design and standardized acceptance optimization system, ensure that the network performance meets the standards after the renovation, thereby improving the network experience of users in the subway.

[0122] (5) Improve construction and management efficiency and ensure project delivery: Through digital management and control, the utilization rate of construction window time and overall construction efficiency have been improved; through closed-loop management of the entire process of progress, quality and safety, it helps to ensure that the project schedule is controllable and the quality meets the standards.

[0123] (6) Forming a standardized system with industry promotion value: The implementation and management system for 5G transformation of existing subway lines formed in this application breaks the traditional one-size-fits-all model in the industry, solves common pain points in the industry, and forms a standardized technology and management paradigm that can be replicated and promoted. It can be directly applied to 5G transformation and 5G-A upgrade projects of existing subway lines in major cities across the country. At the same time, it can also be promoted to network transformation projects in similar rail transit scenarios such as high-speed rail and intercity railways, and has industry value and promotion prospects.

[0124] Example 2

[0125] This application embodiment also provides a device for determining a subway leaky cable line renovation scheme. It should be noted that the device for determining a subway leaky cable line renovation scheme in this application embodiment can be used to execute the method for determining a subway leaky cable line renovation scheme provided in this application embodiment. The following describes the device for determining a subway leaky cable line renovation scheme provided in this application embodiment.

[0126] According to an embodiment of this application, an apparatus for determining the above-described method for modifying subway leaky cable lines is also provided. Figure 4 This is a schematic diagram of a device for determining an optional subway leaky cable line modification scheme according to an embodiment of this application, as shown below. Figure 4 As shown, the device includes: a first determining unit 401, a second determining unit 402, a third determining unit 403, and a fourth determining unit 404.

[0127] Optionally, the first determining unit 401 is used to construct a structured dataset based on the basic data of the subway system and the characteristic data of the leaky cable lines in the subway system. The structured dataset includes the physical and transmission characteristics of the leaky cable lines, the construction conditions of the leaky cable lines, the network coverage requirements, the schedule constraints, and the investment cost constraints. The second determining unit 402 is used to determine the type of the leaky cable line based on the structured dataset. The type is either an existing type that can be used or a type that needs to be newly built. The third determining unit 403 is used to use a first preset scheme as the renovation scheme for the leaky cable line when the type of the leaky cable line is an existing type that can be used. The first preset scheme includes the operation steps of preset equipment matching, impedance matching optimization, abnormal joint replacement, performance optimization, and construction design. The fourth determining unit 404 is used to use a second preset scheme as the renovation scheme for the leaky cable line when the type of the leaky cable line is a type that needs to be newly built. The second preset scheme includes the operation steps of component matching, component installation, construction design, evolution design, and scenario-differentiated adaptation. The components include leaky cables and preset equipment.

[0128] As can be seen from the above, this device adopts a multi-dimensional quantitative evaluation and classification decision-making approach. By constructing a structured dataset covering the physical and transmission characteristics of leaky cables, construction conditions, network coverage requirements, construction period constraints, and investment costs, it accurately identifies whether leaky cable lines are of the usable old type or require new construction. This achieves the goal of matching suitable renovation schemes for different lines, thereby realizing the technical effects of differentiated and precise design of renovation schemes and efficient use of resources. It avoids a one-size-fits-all renovation model and solves the technical problems of high cost, long construction period, and high risk in existing subway leaky cable line renovation schemes.

[0129] In one optional embodiment, the device for determining the subway leaky cable line renovation scheme further includes: a first acquisition unit and a second acquisition unit.

[0130] Optionally, the first acquisition unit is used to acquire the subway system's line construction data, the distribution data of the leaky cable lines, and the operator's network requirements before constructing a structured dataset based on the subway system's basic data and the characteristic data of the leaky cable lines in the subway system, thereby obtaining the subway system's basic data; the second acquisition unit is used to acquire the physical characteristics and transmission characteristics of the leaky cable lines, thereby obtaining the leaky cable line's characteristic data, wherein the physical characteristics include cable specifications, slotting method, manufacturer, service life, and physical integrity, and the transmission characteristics include transmission loss, VSWR, and connector performance.

[0131] In one optional embodiment, the second determining unit 402 includes: a first determining subunit, a summing subunit, and a second determining subunit.

[0132] Optionally, the first determining subunit is used to determine L index scores of the leaky cable line based on a structured dataset, where L is a positive integer; the summing subunit is used to perform a weighted summation of the L index scores of the leaky cable line to obtain the target score of the leaky cable line; and the second determining subunit is used to determine the type of the leaky cable line based on the target score of the leaky cable line.

[0133] In one optional embodiment, the first determining subunit includes: a first determining module, a second determining module, a third determining module, a fourth determining module, a fifth determining module, and a sixth determining module.

[0134] Optionally, the first determining module is used to determine a first indicator score based on the physical and transmission characteristics of the leaky cable line in the structured dataset; the second determining module is used to determine a second indicator score based on the construction conditions of the leaky cable line in the structured dataset; the third determining module is used to determine a third indicator score based on the network coverage requirements in the structured dataset; the fourth determining module is used to determine a fourth indicator score based on the construction schedule constraints in the structured dataset; the fifth determining module is used to determine a fifth indicator score based on the investment cost constraints in the structured dataset; and the sixth determining module is used to take the first, second, third, fourth, and fifth indicator scores as L indicator scores for the leaky cable line.

[0135] In one optional embodiment, the device for determining the subway leaky cable line renovation scheme further includes: a task flow creation unit and a control operation unit.

[0136] Optionally, the task flow creation unit is used to create a construction task flow for the leaky cable line in a preset digital platform after the first preset scheme / second preset scheme is used as the renovation scheme for the leaky cable line; the control operation unit is used to perform control operations on the construction process of the renovation scheme for the leaky cable line based on the construction task flow, wherein the control operations include at least: safety control operations, used to control the construction personnel who have passed the technical test, the construction approval process, the visualized construction screen and the construction tools; quality control operations, used to control the construction process, construction quality and construction problems; and efficiency control operations, used to control the construction procedures, construction progress and construction materials.

[0137] In one optional embodiment, the device for determining the subway leaky cable line renovation scheme further includes: a segmented acceptance unit and a full-section acceptance unit.

[0138] Optionally, the segmented acceptance unit is used to perform segmented acceptance operations on the construction results of the current construction section after the first preset scheme / second preset scheme is used as the renovation scheme for the leaky cable line, and when the construction progress of the renovation scheme indicates that the current construction section has been completed. The leaky cable line includes P construction sections, where P is a positive integer. The full-section acceptance unit is used to perform full-section acceptance operations on the construction results corresponding to the P construction sections when the construction progress of the renovation scheme indicates that all construction sections have been completed.

[0139] In one optional embodiment, the acceptance operation is a segmented acceptance operation or a full-range acceptance operation, wherein the acceptance criteria for the acceptance operation include:

[0140] Electrical performance indicators include third-order intermodulation rejection, VSWR, isolation between frequency bands, and power loss of preset equipment; network coverage performance indicators include network coverage, average download speed, signal received power, signal-to-noise ratio, and signal dwell time ratio; compatibility indicators are used to characterize the transmission quality of preset subway signals in the modified leaky cable lines; safety indicators are used to characterize the compliance of component construction.

[0141] It should be noted that the first determining unit 401, the second determining unit 402, the third determining unit 403 and the fourth determining unit 404 mentioned above correspond to steps S101 to S104 in the method embodiment. The instances and application scenarios implemented by the above units and the corresponding steps are the same, but are not limited to the content disclosed in the above embodiment.

[0142] Example 3

[0143] Embodiments of this application can also provide an electronic device. Figure 5 This is a structural block diagram of an electronic device according to an embodiment of this application, such as... Figure 5 As shown, the electronic device includes: one or more ( Figure 5 (Only one is shown) processor 502, memory 504, memory controller, and peripheral interface, wherein the peripheral interface is connected to the radio frequency module, audio module and display.

[0144] The memory can be used to store software programs and modules, such as the program instructions / modules corresponding to the methods and devices in the embodiments of this application. The processor executes various functional applications and data processing by running the software programs and modules stored in the memory, thereby realizing the above-mentioned method for determining the subway leaky cable line renovation scheme.

[0145] The memory may include high-speed random access memory (RAM), and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory may further include memory remotely located relative to the processor, which can be connected to the terminal via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks (LANs), mobile communication networks, and combinations thereof.

[0146] The processor can access information and applications stored in memory via a transmission device to execute the following steps: Construct a structured dataset based on the basic data of the subway system and the characteristic data of leaky cable lines within the subway system. This structured dataset includes the physical and transmission characteristics of the leaky cable lines, construction conditions, network coverage requirements, schedule constraints, and investment cost constraints. Determine the type of leaky cable line based on the structured dataset, either an existing type or a newly constructed type. If the leaky cable line is an existing type, use a first pre-set solution as the modification plan. This first pre-set solution includes pre-set equipment matching, impedance matching optimization, abnormal connector replacement, performance optimization, and construction design steps. If the leaky cable line is a newly constructed type, use a second pre-set solution as the modification plan. This second pre-set solution includes component matching, component installation, construction design, evolution design, and scenario-differentiated adaptation steps. Components include leaky cables and pre-set equipment.

[0147] This application provides a solution for determining the renovation plan for leaky cable lines in subways. This solution employs a multi-dimensional quantitative evaluation and categorized decision-making approach. By constructing a structured dataset covering the physical and transmission characteristics of the leaky cable, construction conditions, network coverage requirements, schedule constraints, and investment costs, it accurately identifies whether the leaky cable line is an existing type that can be used or a type that needs to be newly built. This achieves the goal of matching suitable renovation plans to different lines, thereby realizing the technical effects of differentiated and precise design of renovation plans and efficient resource utilization. It avoids a one-size-fits-all renovation model and solves the technical problems of high cost, long construction period, and high risk in existing subway leaky cable line renovation plans.

[0148] Those skilled in the art will understand that Figure 5 The structure shown is for illustrative purposes only. Electronic devices can also be smartphones, tablets, PDAs, mobile internet devices, PADs, and other terminal devices. Figure 5 This does not limit the structure of the aforementioned electronic device. For example, electronic devices may also include components that are more... Figure 5 The more or fewer components shown (such as network interfaces, display devices, etc.), or having the same Figure 5 The different configurations shown.

[0149] Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be implemented by a program instructing the hardware related to the terminal device. The program can be stored in a computer-readable storage medium, which may include: flash drive, read-only memory (ROM), random access memory (RAM), disk or optical disk, etc.

[0150] Example 4

[0151] Embodiments of this application may also provide a storage medium.

[0152] Optionally, in this embodiment of the application, the storage medium can be used to store the program code executed by the method for determining the subway leaky cable line renovation scheme provided in the above method embodiment.

[0153] Optionally, in this embodiment, the storage medium may be located in any computer terminal in a group of computer terminals in a computer network, or in any mobile terminal in a group of mobile terminals.

[0154] This application also provides a computer program product, which, when executed on a data processing device, is suitable for performing the steps of a method for determining a subway leaky cable line renovation scheme.

[0155] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0156] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0157] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0158] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0159] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0160] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, read-only memory (ROM), random access memory (RAM), portable hard drive, magnetic disk, or optical disk.

[0161] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A method for determining a subway leaky cable line renovation scheme, characterized in that, include: A structured dataset is constructed based on the basic data of the subway system and the characteristic data of the leaky cable lines in the subway system. The structured dataset includes the physical and transmission characteristics of the leaky cable lines, the construction conditions of the leaky cable lines, the network coverage requirements, the construction schedule constraints, and the investment cost constraints. The type of the leaky cable line is determined based on the structured dataset, wherein the type is an existing type that is available or a type that needs to be newly created; When the type of the leaky cable line is the available old type, the first preset scheme is used as the modification scheme for the leaky cable line. The first preset scheme includes preset equipment matching, impedance matching optimization, abnormal connector replacement, performance optimization, and construction design operation steps. When the type of the leaky cable line is the type that needs to be newly built, the second preset scheme is used as the modification scheme for the leaky cable line. The second preset scheme includes operation steps such as component matching, component installation, construction design, evolution design, and scenario-differentiated adaptation. The components include the leaky cable and the preset equipment.

2. The method for determining the subway leaky cable line renovation scheme according to claim 1, characterized in that, Before constructing a structured dataset based on the basic data of the subway system and the characteristic data of the leaky cable lines in the subway system, the method for determining the subway leaky cable line renovation scheme also includes: The basic data of the subway system are obtained by collecting the line construction data, the distribution data of leaky cable lines, and the network requirements of operators. The physical and transmission characteristics of the leaky cable line are collected to obtain the characteristic data of the leaky cable line. The physical characteristics include cable specifications, slotting method, manufacturer, service life and physical integrity. The transmission characteristics include transmission loss, VSWR and connector performance.

3. The method for determining the subway leaky cable line renovation scheme according to claim 1, characterized in that, Determining the type of the leaky cable line based on the structured dataset includes: Based on the structured dataset, L index scores for the leaky cable line are determined, where L is a positive integer; The target score of the leaky cable line is obtained by weighted summation of the L index scores. The type of the leaky cable line is determined based on the target score of the leaky cable line.

4. The method for determining the subway leaky cable line renovation scheme according to claim 3, characterized in that, Based on the structured dataset, L index scores for the leaky cable line are determined, including: The first indicator score is determined based on the physical and transmission characteristics of the leaky cable lines in the structured dataset. The second indicator score is determined based on the construction conditions of the leaky cable line in the structured dataset. The third indicator score is determined based on the network coverage requirements in the structured dataset. The score for the fourth indicator is determined based on the schedule constraints in the structured dataset. The score for the fifth indicator is determined based on the investment cost constraints in the structured dataset. The scores for the first, second, third, fourth, and fifth indicators are used as the L indicator scores for the leaky cable line.

5. The method for determining the subway leaky cable line renovation scheme according to claim 1, characterized in that, After selecting the first / second preset scheme as the modification scheme for the leaky cable line, the method for determining the modification scheme for the subway leaky cable line further includes: Based on the proposed renovation plan for the leaky cable line, a construction task flow for the leaky cable line is created in a pre-defined digital platform. Based on the construction task flow, the construction process of the leaky cable line renovation plan is controlled, wherein the control operation includes at least: Safety management and control operations are used to manage construction personnel who have passed technical tests, construction approval processes, visual construction screens, and construction tools. Quality control operations are used to manage construction processes, construction quality, and construction problems. Efficiency control operations are used to manage construction procedures, construction progress, and construction materials.

6. The method for determining the subway leaky cable line renovation scheme according to claim 1, characterized in that, After selecting the first / second preset scheme as the modification scheme for the leaky cable line, the method for determining the modification scheme for the subway leaky cable line further includes: When the construction progress indicator of the renovation plan indicates that the current construction section has been completed, a segmented acceptance operation is performed on the construction results of the current construction section. The leaky cable line includes P construction sections, where P is a positive integer. When all construction sections are completed according to the construction progress indication of the renovation plan, a full-section acceptance operation is performed on the construction results corresponding to the P construction sections.

7. The method for determining the subway leaky cable line renovation scheme according to claim 6, characterized in that, The acceptance operation is either the segmented acceptance operation or the full-range acceptance operation, and the acceptance criteria for the acceptance operation include: Electrical performance indicators include third-order intermodulation suppression, standing wave ratio, isolation between frequency bands, and power loss of the preset device; Network coverage performance metrics include network coverage, average download speed, signal received power, signal-to-noise ratio, and signal dwell time ratio. Compatibility metrics are used to characterize the transmission quality of preset subway signals in the modified leaky cable lines. Safety indicators are used to characterize the compliance of the construction of the components.

8. A device for determining a subway leaky cable line renovation scheme, characterized in that, include: The first determining unit is used to construct a structured dataset based on the basic data of the subway system and the characteristic data of the leaky cable lines in the subway system. The structured dataset includes the physical and transmission characteristics of the leaky cable lines, the construction conditions of the leaky cable lines, network coverage requirements, construction schedule constraints, and investment cost constraints. The second determining unit is used to determine the type of the leaky cable line based on the structured dataset, wherein the type is an available old type or a type that needs to be newly created; The third determining unit is used to determine the first preset scheme as the modification scheme for the leaky cable line when the type of the leaky cable line is the available old type. The first preset scheme includes the operation steps of preset equipment matching, impedance matching optimization, abnormal connector replacement, performance optimization and construction design. The fourth determining unit is used to use the second preset scheme as the modification scheme for the leaky cable line when the type of the leaky cable line is the type that needs to be newly built. The second preset scheme includes operation steps such as component matching, component installation, construction design, evolution design and scenario differentiation adaptation. The components include the leaky cable and the preset equipment.

9. A computer program product, characterized in that, The computer program product includes a computer program, wherein, when the computer program is running, it controls the computer program product to execute the method for determining the subway leaky cable line renovation scheme according to any one of claims 1 to 7.

10. An electronic device, characterized in that, It includes one or more processors and a memory, the memory being used to store one or more programs, wherein when the one or more programs are executed by the one or more processors, the one or more processors cause the one or more processors to implement the method for determining the subway leaky cable line renovation scheme according to any one of claims 1 to 7.

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