Test system and test method for large-scale networking data link

By designing a large-scale network data link testing system and utilizing the TCP/IP communication architecture of the monitoring module and the main control module, comprehensive, accurate, automated, and universal testing of data link networking indicators was achieved. This solved the problems of single testing scenarios, incomplete indicator coverage, low automation, and poor compatibility in existing technologies, thereby improving testing efficiency and accuracy.

CN123035140APending Publication Date: 2026-11-03SHANGHAI RADIO EQUIP RES INST
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Patent Information

Application Number
CN202611136664.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-07-29
Publication Date
2026-11-03

AI Technical Summary

Technical Problem

Existing data link networking indicator testing technologies suffer from problems such as limited testing scenarios, incomplete indicator coverage, low automation, and poor compatibility, failing to meet the comprehensive, accurate, automated, and universal testing needs in complex scenarios.

Method used

A large-scale network data link testing system was designed, including a monitoring module and multiple main control modules. It realizes local area network communication through TCP/IP protocol, configures data link node parameters, calculates network formation time, network reconstruction time, and random access time, and performs data filtering and noise reduction processing to generate analysis reports.

Benefits of technology

It enables comprehensive, accurate, automated, and universal data link networking performance verification and evaluation in complex scenarios, improving testing efficiency and accuracy, reducing human error, and is suitable for testing various data link systems.

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Abstract

The application discloses a kind of large-scale networking data chain test system and test method, system includes: monitoring module;Multiple main control modules, each main control module is connected with a data chain node, for controlling the data chain node and obtaining its telemetry data;Monitoring module and multiple main control modules are connected by network communication, for configuring the networking parameter of each data chain node and sending control instruction to the main control module, and receiving the telemetry data reported by each main control module;Monitoring module is based on the telemetry data received, calculates the networking time of the large-scale networking data chain, network reconstruction time and random access time.The application is based on the local area network construction of TCP / IP communication architecture and multiple main control modules of monitoring module, through the local area network, monitoring module can carry out networking control by the telemetry state data of each data chain terminal reported, so as to calculate each key index under the condition of large-scale networking of multi-node data chain.
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Description

Technical Field

[0001] This invention relates to the field of data link testing technology, and specifically to a testing system and method for large-scale networked data links. Background Technology

[0002] As a core component of modern communication and command systems, data links enable real-time transmission, interaction, and sharing of various types of data through multi-node networking. They are widely used in military operations, emergency communications, intelligent transportation, and many other fields. The networking performance of data links directly determines the operational efficiency, reliability, and stability of the entire system. The accuracy and comprehensiveness of testing networking indicators (including networking time, recovery time, and unrestricted access time) are crucial aspects of the research, development, deployment, and maintenance of data link systems.

[0003] Existing data link networking performance testing technologies have the following shortcomings: First, the testing scenarios are limited, often using fixed topologies or simple simulated environments, failing to simulate dynamic networking scenarios in real-world environments, resulting in test results that are out of sync with actual application scenarios. Second, the testing metrics coverage is incomplete, focusing primarily on basic metrics such as transmission latency and packet loss rate, lacking effective means to test core metrics such as protocol consistency, dynamic network adaptability, and multi-node collaborative stability. Third, the testing process has a low degree of automation, heavily relying on manual configuration of test parameters, collection of test data, and analysis of test results, which is not only inefficient but also prone to introducing human error, making it difficult to meet the needs of large-scale, multi-batch data link networking testing. Fourth, the testing systems have poor compatibility, requiring the construction of dedicated testing platforms for different types and protocols of data links, resulting in high testing costs, weak versatility, and an inability to achieve collaborative linkage between virtual and physical testing.

[0004] Therefore, there is an urgent need for a data link networking performance testing solution that can solve the above-mentioned technical pain points and achieve comprehensive, accurate, automated and universal testing in complex scenarios, so as to provide reliable support for the verification and optimization of data link networking performance. Summary of the Invention

[0005] The purpose of this invention is to provide a large-scale networking testing system and method to solve the problems of single testing scenarios, incomplete indicator coverage, low automation and poor compatibility in existing data link networking indicator testing, and to achieve comprehensive, accurate, automated and universal data link networking performance verification and evaluation in complex scenarios.

[0006] To achieve the above objectives, this invention proposes a testing system for large-scale networked data links, comprising: Monitoring module; Multiple main control modules, each connected to a corresponding data link node, are used to control the data link node and acquire its telemetry data; The monitoring module is connected to the multiple main control modules via network communication, and is used to configure the networking parameters of each data link node and send control commands to the main control modules, as well as receive telemetry data reported by each main control module. Based on the received telemetry data, the monitoring module calculates the networking time, network reconstruction time, and random access time of the large-scale network data chain.

[0007] Optionally, the main control module includes: Host computer; Data link terminal equipment, which includes a command interface, a telemetry data interface and a business data interface; The instruction interface is connected to the first serial port of the host computer via a first RS422 serial port; the telemetry data interface is connected to the second serial port of the host computer via a second RS422 serial port. The business data interface is connected to the third serial port of the host computer via a third RS422 serial port.

[0008] Optionally, the monitoring module includes: Host computer server; An Ethernet switch, the first port of which is connected to the host computer server; Multiple main control modules are connected to the remaining ports of the Ethernet switch through the network interfaces on their respective host computers; The monitoring module communicates with the multiple main control modules via the TCP / IP protocol.

[0009] In addition, this invention also proposes a testing method for large-scale network data links, including the following steps: S1. Equip each data link node with an independent master control module to realize command control and telemetry reading of the data link node; S2. Utilize the TCP / IP protocol to establish a communication local area network between multiple main control modules and monitoring modules; S3. Configure the data link terminal parameters corresponding to the multiple main control modules through the monitoring module to complete the networking of multiple data link terminal machines; S4. Based on the network configuration, calculate the network configuration time, network reconstruction time, and random access time of the large-scale network data link.

[0010] Optionally, the parameters configured in S3 include: cluster node ID, node identity, number of cluster nodes, power amplifier switching command, and node role; S3 also includes: after completing the parameter configuration, sending self-test command, BeiDou time synchronization command, time synchronization command, data link auxiliary data command, and working mode switching command to all main control modules in sequence through the monitoring module.

[0011] Optionally, the calculation method for the network establishment time in S4 is as follows: the latest time when each slave node completes the link establishment with the cluster head is taken as the network construction time. That is, the telemetry data of the cluster head is selected, and when all slave nodes are in the network state for the first time, the maximum value of the network entry time of each slave node is determined as the network construction time.

[0012] Optionally, the method for calculating the network reconstruction time in S4 includes: S41. The monitoring module issues a fault setting command to trigger network reconstruction. When a slave node failure occurs, the starting time is the time number corresponding to the fault setting command, and the ending time is the maximum time number when the connectivity status of the faulty node reported by all other nodes changes to "disconnected". The difference between the two times is the network reconstruction time. S42. When a cluster head failure occurs, the starting time is the time number corresponding to the failure setting command, and the ending time is the maximum time number when the connectivity status of the original cluster head node reported by all slave nodes changes to "disconnected" and the first unique new cluster head identity node appears. The difference between the two times is the network reconstruction time.

[0013] Optionally, the calculation method for the random access time in S4 is as follows: for a slave node, the starting time is the moment when the monitoring module sets the slave node to switch from silent mode to normal working mode, and the ending time is the moment when the connection status of the slave node changes to "connected" in the telemetry data reported by the cluster head to which the slave node is connected. The difference between the two times is the random access time.

[0014] Optionally, it also includes S5: performing data filtering and noise reduction on the calculated network formation time, network reconstruction time, and random access time, and comparing the processed data with preset indicator thresholds to determine whether each network formation indicator is qualified.

[0015] Optionally, it also includes: for indicators judged to be unqualified, automatically analyzing the cause of the anomaly and locating the abnormal node or link, and generating a data analysis report containing test data, analysis results and optimization suggestions.

[0016] The present invention has the following beneficial effects: This invention discloses a large-scale networked data link testing system and method based on TCP / IP communication architecture in the field of data link testing technology. An independent main control module is configured for each data link terminal of a single node. This main control module can send control commands to a single data link node and receive and parse telemetry and related control command feedback. Then, a local area network (LAN) is built based on the TCP / IP communication architecture, connecting a monitoring module and multiple main control modules. Through this LAN, the monitoring module can perform network control by issuing commands to multiple main control modules and receiving telemetry status data reported by each data link terminal from all main control modules in the network. This allows for further calculation and analysis of key indicators under the large-scale networked state of multi-node data links. Attached Figure Description

[0017] Figure 1 The structural block diagram of the main control module; Figure 2 This is a schematic diagram of the data transmission and reception principle of the main control module. Figure 3 This is a schematic diagram showing the connection between the monitoring system and the main control module; Figure 4 Charts for configuring data link parameters for each terminal device (data link terminal equipment); Figure 5 This is a flowchart of the testing method for large-scale networked data links of the present invention. Detailed Implementation

[0018] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, further illustrates the testing system and method for large-scale networked data links proposed in this invention. The advantages and features of this invention will become clearer from the following description. It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions, used only to facilitate and clearly illustrate the embodiments of this invention. Please refer to the accompanying drawings to make the objectives, features, and advantages of this invention more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation conditions of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effects and objectives achieved by this invention, should still fall within the scope of the technical content disclosed in this invention.

[0019] The proposed testing system for large-scale networked data chains includes: a monitoring module; and multiple main control modules, each connected to a corresponding data chain node for controlling that node and acquiring its telemetry data. The monitoring module is connected to the multiple main control modules via network communication and is used to configure the networking parameters of each data chain node, send control commands to the main control modules, and receive telemetry data reported by each main control module. Based on the received telemetry data, the monitoring module calculates the networking time, network reconfiguration time, and random access time of the large-scale networked data chain. The calculated networking time, network reconfiguration time, and random access time are then filtered and noise-reduced, and the processed data is compared with preset threshold values ​​to determine whether each networking indicator is qualified.

[0020] like Figure 1 As shown, the main control module mainly consists of a host computer 10, an expandable USB splitter 15, a USB-to-Ethernet module 25, a programmable DC power supply 20, a data link terminal device 30, and related test cables. The USB-to-Ethernet module 25 is used for communication with the monitoring module. The host computer 10 controls the programmable power supply 20 through a USB-to-422 interface module. The output of the programmable DC power supply 20 is connected to the data link terminal device 30 to provide power support.

[0021] Specifically, the host computer 10 is connected to a USB splitter 15 and a USB-to-Ethernet module 25 via a USB cable 401. The USB splitter 15 is connected to a programmable DC power supply 20 and a data link terminal device 30 via an RS422 communication link 402. The output of the programmable DC power supply 20 is connected to the data link terminal device 30 via a test cable 403. The data link terminal device 30 includes a command interface, a telemetry data interface, and a service data interface. The command interface is connected to the first serial port of the host computer 10 via a first RS422 serial port. The telemetry data interface is connected to the second serial port of the host computer 10 via a second RS422 serial port. The service data interface is connected to the third serial port of the host computer 10 via a third RS422 serial port.

[0022] like Figure 2 As shown, the host computer 10 transmits data and commands to the data link terminal through various RS422 serial ports. Specifically, the business command data transmission and reception uses a separate RS422 serial port, each command data transmission and reception uses a separate RS422 serial port, and the telemetry reception uses a separate RS422 serial port, for a total of 3 independent RS422 serial ports.

[0023] The monitoring module includes a host computer server 40; an Ethernet switch 50, the first port of which is connected to the host computer server 40; multiple main control modules are connected to the remaining ports of the Ethernet switch 50 through the network interface (USB to Ethernet module) on their respective host computers 10; the monitoring module communicates with the multiple main control modules via the TCP / IP protocol.

[0024] The monitoring module is used to implement operations such as power control and data transmission / reception control. Its principle is explained in [link to documentation]. Figure 3 As shown. The monitoring module sends power control commands to the main control module via TCP and receives real-time voltage and current data reported by the main control software; the monitoring module also sends various control commands to the main control module via TCP and receives command feedback and telemetry data uploaded by the main control modules of each terminal unit.

[0025] In addition, this invention also proposes a testing method for large-scale network data links, including the following steps: S1. Equip each data link node with an independent master control module to realize command control and telemetry reading of the data link node; S2. Utilize the TCP / IP protocol to establish a communication local area network between multiple main control modules and monitoring modules; S3. Configure the data link terminal parameters corresponding to the multiple main control modules through the monitoring module to complete the networking of multiple data link terminal machines; S4. Based on the network configuration, calculate the network configuration time, network reconstruction time, and random access time of the large-scale network data link.

[0026] The parameters configured in step S3 include: cluster node ID, node identity, number of cluster nodes, power amplifier switching command, and node role. For specific parameters, please refer to [link / reference needed]. Figure 4 Taking a node count of N=10 as an example, a total of 10 data links are networked. Data link terminal 1 is configured as the master node, and the other nodes are slave nodes. The monitoring module sends a "self-test command" to the master control modules 1~10 (data links_1~10); sends a "BeiDou time synchronization command" to the master control modules 1~10 (data links_1~10); sends a "time synchronization command" to the master control modules 1~10 (data links_1~10); sends a "data link auxiliary data command" to the master control modules 1~10 (data links_1~10); and issues a "working mode switching command" to the master control modules 1~10 (data links_1~10), setting them to "low power" mode.

[0027] Step S3 also includes: after completing the parameter configuration, sending self-test instructions, BeiDou time synchronization instructions, time synchronization instructions, data link auxiliary data instructions and working mode switching instructions to all main control modules in sequence through the monitoring module.

[0028] The calculation method for the network construction time in step S4 is as follows: the latest time when each slave node completes the link establishment with the cluster head is taken as the network construction time. That is, the telemetry data of the cluster head is selected, and when all slave nodes are in the network state for the first time, the maximum value of the network entry time of each slave node is determined as the network construction time.

[0029] Specifically, the calculation principle for network setup time is as follows: the latest time when each slave node and cluster head completes the link establishment is taken as the construction time of the entire network.

[0030] The main terminal statistical parameters include "Node X (X is the node ordinal number) network entry time" (this field already exists in the telemetry data). The timing rules are as follows: the start time is when the mode switching command is received and the node switches to low power mode; the end time is when the network management message of Node X is received and its status is set to "connected" (i.e., network entry status).

[0031] The method for calculating the network reconstruction time in step S4 includes: S41. The monitoring module issues a fault setting command to trigger network reconstruction. When a slave node failure occurs, the starting time is the time number corresponding to the fault setting command, and the ending time is the maximum time number when the connectivity status of the faulty node reported by all other nodes changes to "disconnected". The difference between the two times is the network reconstruction time. S42. When a cluster head failure occurs, the starting time is the time number corresponding to the failure setting command, and the ending time is the maximum time number when the connectivity status of the original cluster head node reported by all slave nodes changes to "disconnected" and the first unique new cluster head identity node appears. The difference between the two times is the network reconstruction time.

[0032] Specifically, calculating network reconfiguration time from node failures includes: When the monitoring module is set to fault (silent mode), the time element number in the corresponding telemetry frame is taken as the statistical start time T0 (that is, the time element number corresponding to the occurrence of silent mode in the "working mode switch response"). In a telemetry frame reported by a node, when the connectivity status of a faulty node changes to "disconnected" (the corresponding position of the faulty node in the "network status" becomes 0), the corresponding time element is the process time TC_M. The maximum value of TC_M is the statistical termination time TC. The difference between the start time T0 and the termination time TC (i.e., TC-T0) is the network reconstruction time.

[0033] Specifically, calculating network reconstruction time from cluster head failure includes: When the monitoring module is set to fault (silent mode), the time element number in the corresponding telemetry frame is taken as the statistical start time T0 (that is, the time element number corresponding to the occurrence of silent mode in the "working mode switch response"). In a telemetry frame reported by a node, when the connectivity status of the cluster head node changes to "disconnected" (the corresponding position of the cluster head in the "network status" becomes 0), the corresponding time element is the process time TC_M; After the fault is set up, the time element corresponding to the first occurrence of a unique new cluster head identity node in each node (it needs to be determined that it is a new cluster head ID, and the cluster head node address reported by each node is consistent, because there are multiple cluster head upgrade competition processes) is the process time TC_N; the maximum value of TC_M and TC_N is the statistical termination time TC; the difference between the start time T0 and the termination time TC (i.e. TC-T0) is the network reconstruction time.

[0034] Furthermore, the method for calculating the random access time in step S4 is as follows: For slave nodes, the starting time is the moment when the monitoring module sets the slave node to switch from silent mode to normal working mode, and the ending time is the moment when the slave node's connectivity status changes to "connected" in the telemetry data reported by the cluster head to which the slave node is connected. The difference between the two times is the random access time.

[0035] Specifically, the monitoring module sets node X to switch from silent mode to low power mode. At this time, the time element in the corresponding telemetry frame is taken as the statistical start time T0 (that is, the time when the "working mode switch response" appears in silent mode and then in low power mode). After T0, check the cluster head ID to which the node is connected, and check the time element corresponding to the time when the connection status of node X in the telemetry data reported by the cluster head changes to "connected" (the corresponding position of node X in "network status" changes to 1) as the statistical termination time TS; The difference between the start time T0 and the end time TS (i.e., TS-T0) is the random access time of node X.

[0036] Furthermore, the testing method for large-scale networked data links proposed in this invention also includes step S5, such as... Figure 5 As shown, after step S4, the calculated network formation time, network reconfiguration time, and random access time are subjected to data filtering and noise reduction. The processed data is then compared with preset indicator thresholds to determine whether each network indicator is qualified. For indicators that are determined to be unqualified, the cause of the anomaly is automatically analyzed and the abnormal node or link is located, and a data analysis report containing test data, analysis results, and optimization suggestions is generated.

[0037] Specifically, step S5 includes: S51. Networking Time Metrics: Calculate the networking time metrics of the network data chain under the maximum node scale, and conduct multiple rounds of testing. By statistically analyzing the average, maximum, and minimum values ​​of multiple sets of data, the overall performance of networking time is obtained. S52. Network Reconstruction Time Metrics: Calculate network reconstruction time under various scenarios, including "single member node network failure", "single cluster head network failure", and "cluster head and multiple member nodes network failure", and conduct multiple rounds of testing to evaluate the resilience and reconstruction performance of the network data link. S53, Adaptive Access Time Metric: In dynamic networking scenarios, simulate the addition of a single node or other nodes, collect data such as network topology adjustment time, data transmission interruption duration, and node reconnection success rate to evaluate the dynamic adaptability of the network. S54. Data Processing and Analysis: Filter and reduce noise on the network setup time, network reconfiguration time, and random access time obtained from the test to remove abnormal data; use a preset analysis algorithm to compare the processed data with the indicator thresholds configured by the test control center to determine whether each network indicator is qualified; for unqualified indicators, automatically analyze the cause of the anomaly and locate the abnormal node or link; at the same time, generate a detailed data analysis report, including the test data, analysis results, cause of the anomaly, and optimization suggestions for each indicator.

[0038] This invention discloses a large-scale network data link testing method based on TCP / IP communication architecture in the field of data link testing technology. It is applicable to the network performance verification and evaluation of various tactical data links, enabling comprehensive, accurate, and efficient testing of network indicators. First, an independent master control module is configured for each data link terminal of a single node. This master control module can send control commands to a single data link node and receive and parse telemetry and related control command feedback. Then, a local area network (LAN) is built based on the TCP / IP communication architecture, connecting a monitoring module and multiple master control modules. Through this LAN, the monitoring module can control the network by issuing commands to multiple master control modules and receiving telemetry status data reported by each data link terminal from all master control modules across the network. This allows for further calculation and analysis of key indicators under large-scale multi-node data link networking conditions. This invention provides reliable support for achieving comprehensive, accurate, automated, and universal data link networking indicator testing schemes and for verifying and optimizing data link networking performance in complex scenarios.

[0039] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0040] In the description of this invention, it should be understood that the terms "center," "height," "thickness," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0041] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] Although the present invention has been described in detail through the preferred embodiments above, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above description. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A testing system for large-scale networked data links, characterized in that, include: Monitoring module; Multiple main control modules, each connected to a corresponding data link node, are used to control the data link node and acquire its telemetry data; The monitoring module is connected to the multiple main control modules via network communication, and is used to configure the networking parameters of each data link node and send control commands to the main control modules, as well as receive telemetry data reported by each main control module. Based on the received telemetry data, the monitoring module calculates the networking time, network reconstruction time, and random access time of the large-scale network data chain.

2. The testing system for large-scale networked data links as described in claim 1, characterized in that, The main control module includes: Host computer; Data link terminal equipment, which includes a command interface, a telemetry data interface and a business data interface; The instruction interface is connected to the first serial port of the host computer via a first RS422 serial port; the telemetry data interface is connected to the second serial port of the host computer via a second RS422 serial port. The business data interface is connected to the third serial port of the host computer via a third RS422 serial port.

3. The testing system for large-scale networked data links as described in claim 1, characterized in that, The monitoring module includes: Host computer server; An Ethernet switch, the first port of which is connected to the host computer server; Multiple main control modules are connected to the remaining ports of the Ethernet switch through the network interfaces on their respective host computers; The monitoring module communicates with the multiple main control modules via the TCP / IP protocol.

4. A testing method for large-scale networked data links, characterized in that, Includes the following steps: S1. Equip each data link node with an independent master control module to realize command control and telemetry reading of the data link node; S2. Utilize the TCP / IP protocol to establish a communication local area network between multiple main control modules and monitoring modules; S3. Configure the data link terminal parameters corresponding to the multiple main control modules through the monitoring module to complete the networking of multiple data link terminal machines; S4. Based on the network configuration, calculate the network configuration time, network reconstruction time, and random access time of the large-scale network data link.

5. The testing method for large-scale network data links as described in claim 1, characterized in that, The parameters configured in S3 include: cluster node ID, node identity, number of cluster nodes, power amplifier switching command, and node role; S3 also includes: after the parameter configuration is completed, the monitoring module sequentially sends self-test command, BeiDou time synchronization command, time synchronization command, data link auxiliary data command, and working mode switching command to all main control modules.

6. The testing method for large-scale network data links as described in claim 1, characterized in that, The calculation method for network establishment time described in S4 is as follows: the latest time when each slave node completes the link establishment with the cluster head is taken as the network establishment time. That is, the telemetry data of the cluster head is selected, and when all slave nodes are in the network state for the first time, the maximum value of the network entry time of each slave node is determined as the network establishment time.

7. The testing method for large-scale network data links as described in claim 1, characterized in that, The method for calculating network reconstruction time described in S4 includes: S41. The monitoring module issues a fault setting command to trigger network reconstruction. When a slave node failure occurs, the starting time is the time number corresponding to the fault setting command, and the ending time is the maximum time number when the connectivity status of the faulty node reported by all other nodes changes to "disconnected". The difference between the two times is the network reconstruction time. S42. When a cluster head failure occurs, the starting time is the time number corresponding to the failure setting command, and the ending time is the maximum time number when the connectivity status of the original cluster head node reported by all slave nodes changes to "disconnected" and the first unique new cluster head identity node appears. The difference between the two times is the network reconstruction time.

8. The testing method for large-scale network data links as described in claim 1, characterized in that, The calculation method for the random access time described in S4 is as follows: For a slave node, the starting time is the moment when the monitoring module sets the slave node to switch from silent mode to normal working mode, and the ending time is the moment when the connection status of the slave node changes to "connected" in the telemetry data reported by the cluster head to which the slave node is connected. The difference between the two times is the random access time.

9. The testing method for large-scale network data links as described in claim 1, characterized in that, It also includes S5: performing data filtering and noise reduction on the calculated network formation time, network reconstruction time, and random access time, and comparing the processed data with preset indicator thresholds to determine whether each network formation indicator is qualified.

10. The testing method for large-scale network data links as described in claim 9, characterized in that, Also includes: For indicators deemed unqualified, the system automatically analyzes the cause of the anomaly, locates the abnormal node or link, and generates a data analysis report containing test data, analysis results, and optimization suggestions.