A high-reliability transmission method for wireless networks based on dual-link redundancy

Abstract

The present invention discloses a high-reliability transmission method for a wireless network based on dual-link redundancy, which relates to the field of wireless communication technology. The method includes establishing dual communication links, collecting link quality data of the dual communication links; performing weighted operations on the link quality data according to preset weighting coefficients to obtain a first link score and a second link score, and judging the first link score and the second link score; sending an original data packet and a backup data packet of the original data packet to the dual communication links according to the judgment result, and collecting the data transmission status within a receiving time window; when the original data packet is detected to be lost within the receiving time window, extracting the backup data packet of the original data packet for data recovery, and recalculating the link score of the original data packet. The present invention improves the efficiency of network resource utilization while ensuring data transmission reliability through the organic combination of multi-dimensional link quality evaluation, link selection based on weighted calculation, dual-link parallel transmission, and rapid data recovery.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless communications, and in particular to a high-reliability transmission method for a wireless network based on dual-link redundancy. Background Art

[0002] Wireless network transmission offers advantages over wired networks, such as flexible deployment and low cost. However, its transmission reliability is susceptible to factors such as environmental interference, channel fading, and network congestion. To improve the reliability of wireless network transmission, researchers have proposed various solutions, including adaptive modulation and coding, link quality assessment, and network redundancy design. Network redundancy technology establishes multiple independent transmission channels, switching to a backup link when the primary transmission link fails, thereby ensuring continuous and reliable data transmission. Currently, common network redundancy technologies include hot backup, cold backup, and warm backup modes, which are widely used in wireless communication systems in industrial sites.

[0003] However, existing wireless network redundant transmission technologies still have several shortcomings. First, most redundant transmission schemes use static link switching strategies and cannot dynamically adjust transmission strategies based on network status, resulting in inefficient network resource utilization. Second, traditional link quality assessment methods often only consider a single metric (such as signal strength or packet loss rate), lacking a comprehensive assessment of link performance and easily leading to inaccurate link selection. Furthermore, when packets are lost, existing technologies typically use retransmission mechanisms for data recovery, which increases network latency and bandwidth overhead. Finally, in existing redundant transmission schemes, backup links remain idle, failing to fully utilize network resources.

[0004] To address the above problems, the present invention proposes a high-reliability transmission method for wireless networks based on dual-link redundancy. This method establishes a dual-link parallel transmission mechanism, combines multi-dimensional link quality evaluation and dynamic link selection strategy, to achieve efficient utilization of network resources and reliability assurance of data transmission; at the same time, it adopts data packet backup and rapid recovery mechanism to effectively reduce the impact of data loss on system performance. Summary of the Invention

[0005] In view of the problems of the existing wireless network redundant transmission technology such as static link switching strategy, single link quality evaluation, low data recovery efficiency and insufficient network resource utilization, the present invention is proposed.

[0006] Therefore, the problem to be solved by the present invention is how to improve the efficiency of network resource utilization while ensuring data transmission reliability through multi-dimensional link quality evaluation and dynamic link selection strategy, combined with a dual-link parallel transmission mechanism, and achieve rapid data recovery when data packets are lost.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] In the first aspect, an embodiment of the present invention provides a high-reliability transmission method for a wireless network based on dual-link redundancy, which includes establishing dual communication links and collecting link quality data of the dual communication links; using an adaptive dynamic weighted algorithm to perform weighted operations on the link quality data according to a preset weighting coefficient to obtain a first link score and a second link score, and judging the first link score and the second link score; sending the original data packet and the backup data packet of the original data packet to the dual communication links according to the judgment result, and collecting the data transmission status within the receiving time window; when the original data packet is detected to be lost within the receiving time window, extracting the backup data packet of the original data packet for data recovery, and recalculating the link score of the original data packet.

[0009] As a preferred solution of the wireless network high-reliability transmission method based on dual-link redundancy described in the present invention, wherein: the dual communication links include a first communication link and a second communication link; the link quality data include a signal strength value, a data delay value and a packet loss rate value; the method for obtaining the link quality data is to scan the communication environment through a wireless communication module, and the scanning range covers the low frequency band and the high frequency band, and use a channel quality assessment algorithm to select the two channels with the best signal strength to construct the first communication link and the second communication link respectively, wherein the first communication link serves as the main data transmission channel and operates in the low frequency band; the second communication link serves as a backup data transmission channel and operates in the high frequency band; link quality measurements are performed on the first communication link and the second communication link to obtain link quality data; the link quality data is collected according to a preset collection period and stored in a link status database.

[0010] As a preferred solution of the wireless network high-reliability transmission method based on dual-link redundancy described in the present invention, wherein: an adaptive dynamic weighted algorithm is adopted to perform weighted operation on the link quality data according to a preset weighting coefficient to obtain a first link score and a second link score, and the first link score and the second link score are judged, including: setting a preset weighting coefficient matrix according to historical data analysis, and performing weighted calculation on the link quality data of the first communication link and the second communication link respectively through a weighted calculation unit to obtain a first link score and a second link score; using a neural network model to extract features of the first link score and the second link score, and inputting the extraction results into a link evaluation module for judgment.

[0011] As a preferred solution of the wireless network high-reliability transmission method based on dual-link redundancy described in the present invention, the preset weighting coefficients include a signal strength weighting coefficient, a data delay weighting coefficient, and a packet loss rate weighting coefficient; the judgment includes: when the first link score is greater than a preset scoring threshold, and the first link score is greater than the second link score, marking the first communication link as a primary transmission link, and marking the first communication link as a backup transmission link; if the first link score is less than or equal to the second link score, determining whether the second link score is greater than the preset scoring threshold; if the second link score is greater than the preset scoring threshold, marking the second communication link as the primary transmission link, and marking the first communication link as the backup transmission link; when the first link score is less than the preset scoring threshold, and the first link score is less than the second link score, marking the second communication link as the primary transmission link, and marking the first communication link as the backup transmission link; and storing the calculation results of the first link score and the second link score in a link scoring database based on the judgment result.

[0012] As a preferred solution of the wireless network high-reliability transmission method based on dual-link redundancy of the present invention, the calculation formulas for the first link score and the second link score are as follows:

[0013]

[0014] Among them, Score i is the score value of the i-th link, t is the current time, T is the time window length, D i (t) is the data delay value of the i-th link, τ is the delay normalization coefficient, β is the packet loss rate impact factor, PLR i is the packet loss rate of the i-th link, RSS i is the signal strength value of the i-th link, σ is the time attenuation coefficient, ξ(t) is the quality evaluation function, and the specific formula is as follows:

[0015]

[0016] Among them, α is the sensitivity coefficient, Q(t) is the real-time link quality value, Q th is the quality threshold.

[0017] As a preferred solution of the wireless network high-reliability transmission method based on dual-link redundancy described in the present invention, wherein: the original data packet and the backup data packet of the original data packet are sent to the dual communication links according to the judgment result, and the data transmission status within the receiving time window is collected, including: using a layered encryption mechanism to add a serial number identifier and a timestamp identifier to the original data packet, and sending it through the main transmission link; at the same time, the original data packet is copied to generate a backup data packet, and sent through the backup transmission link, wherein the backup data packet inherits the serial number identifier and timestamp identifier of the original data packet; a receiving time window is set at the receiving end, the data transmission status is collected, and the data transmission status is stored in a transmission status database, wherein the data transmission status includes the data packet arrival time, the data packet integrity flag, the data packet receiving sequence and the data packet link identifier.

[0018] As a preferred solution of the wireless network high-reliability transmission method based on dual-link redundancy described in the present invention, when the original data packet is detected to be lost within the receiving time window, the backup data packet of the original data packet is extracted for data recovery, and the link score of the original data packet is recalculated, including: extracting the corresponding backup data packet from the data stream of the backup transmission link according to the serial number identifier and timestamp identifier of the lost data packet; performing integrity check on the backup data packet, and after confirming that the backup data packet is not damaged, transmitting the backup data packet to the application layer to complete data recovery; recording the data packet loss event, updating the packet loss rate value of the main transmission link, and combining the currently collected signal strength value and data delay value, recalculating the link score of the main transmission link according to the preset weighting coefficient; when the link score of the main transmission link is less than the preset threshold, switching the transmission roles of the main transmission link and the backup transmission link.

[0019] In the second aspect, an embodiment of the present invention provides a wireless network high-reliability transmission system based on dual-link redundancy, which includes: a data acquisition module for establishing dual communication links and collecting link quality data of the dual communication links; a link quality calculation and judgment module for using an adaptive dynamic weighted algorithm to perform weighted operations on the link quality data according to a preset weighting coefficient to obtain a first link score and a second link score, and judge the first link score and the second link score; a data transmission module for sending the original data packet and the backup data packet of the original data packet to the dual communication links according to the judgment result, and collecting the data transmission status within the receiving time window; a link score update module for extracting the backup data packet of the original data packet for data recovery and recalculating the link score of the original data packet when the original data packet is detected to be lost within the receiving time window.

[0020] In a third aspect, an embodiment of the present invention provides a computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: when the computer program instructions are executed by the processor, the steps of the high-reliability transmission method for a wireless network based on dual-link redundancy as described in the first aspect of the present invention are implemented.

[0021] In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein: when the computer program instructions are executed by a processor, the steps of the high-reliability transmission method for a wireless network based on dual-link redundancy as described in the first aspect of the present invention are implemented.

[0022] The beneficial effects of the present invention are as follows: by establishing dual communication links and collecting multi-dimensional link quality data, link score calculation is performed in combination with preset weighting coefficients to achieve accurate evaluation of link performance; a dual-link parallel transmission mechanism is adopted, while the main transmission link transmits the original data packet, the backup data packet is synchronously transmitted through the backup transmission link, thereby improving the efficiency of network resource utilization; when data packet loss is detected, the corresponding backup data packet can be quickly extracted from the backup transmission link for recovery, and the link performance can be timely adjusted by dynamically updating the link score, thereby reducing data recovery time and reducing the impact of transmission interruption on system performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort. Among them:

[0024] Figure 1 This is a flowchart of a high-reliability transmission method for a wireless network based on dual-link redundancy according to Example 1. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0028] Example 1

[0029] Reference Figure 1 , which is the first embodiment of the present invention, provides a wireless network high reliability transmission method based on dual link redundancy, comprising:

[0030] S1: Establishing dual communication links and collecting link quality data of the dual communication links.

[0031] Specifically, the method for obtaining link quality data is to scan the communication environment through the wireless communication module, with the scanning range covering the low frequency band and the high frequency band, and use the channel quality assessment algorithm to select the two channels with the best signal strength to construct the first communication link and the second communication link respectively.

[0032] It should be noted that the dual communication links include a first communication link and a second communication link; link quality data includes signal strength, data latency, and packet loss rate. The first communication link serves as the primary data transmission channel and operates in the low-frequency band; the second communication link serves as the backup data transmission channel and operates in the high-frequency band.

[0033] Furthermore, link quality measurements are performed on the first communication link and the second communication link to obtain link quality data; the link quality data is collected according to a preset collection period and stored in a link status database.

[0034] S2: Using an adaptive dynamic weighting algorithm, perform a weighted operation on the link quality data according to a preset weighting coefficient to obtain a first link score and a second link score, and make a judgment based on the first link score and the second link score.

[0035] Specifically, a preset weighting coefficient matrix is ​​set based on historical data analysis, and the link quality data of the first communication link and the second communication link are weightedly calculated by a weighted calculation unit to obtain a first link score and a second link score; a neural network model is used to extract features of the first link score and the second link score, and the extraction results are input into a link evaluation module for judgment.

[0036] It should be noted that the row vectors of the preset weighting coefficient matrix represent the weight coefficients of the three link quality indicators: signal strength value, data delay value and packet loss rate value; the column vectors represent the time attenuation weight coefficients of different time windows.

[0037] Furthermore, the steps for constructing the neural network model are as follows: preprocessing the link quality data, normalizing the signal strength value, data delay value and packet loss rate value to the [0,1] interval, and using the time window mechanism to split the sample sequence; constructing the network structure: the feature extraction layer adopts a multi-layer perceptron structure with a ReLU activation function, and the number of neurons is 2-3 times the input dimension; the time series feature learning adopts an LSTM layer with 32-64 units; the feature fusion layer uses a fully connected layer and introduces a dropout mechanism (ratio 0.5) to prevent overfitting; the output layer contains 2 neurons, and the result is mapped to the [0,1] interval through the sigmoid activation function to obtain the link score; the model is trained using batch gradient descent and MSE loss function, the initial learning rate is set to 0.001 and an attenuation strategy is adopted, and the performance is evaluated through cross-validation and regularization technology is introduced to dynamically optimize the network structure and hyperparameters to improve the robustness of the model.

[0038] Furthermore, the calculation formulas for the first link score and the second link score are as follows:

[0039]

[0040] Among them, Score i is the score value of the i-th link, t is the current time, T is the time window length, D i (t) is the data delay value of the i-th link, τ is the delay normalization coefficient, β is the packet loss rate impact factor, PLR i is the packet loss rate of the i-th link, RSS i is the signal strength value of the i-th link, σ is the time attenuation coefficient, ξ(t) is the quality evaluation function, and the specific formula is as follows:

[0041]

[0042] Among them, α is the sensitivity coefficient, Q(t) is the real-time link quality value, Q th is the quality threshold.

[0043] Specifically, when the first link score is greater than a preset score threshold, and the first link score is greater than the second link score, the first communication link is marked as the main transmission link, and the first communication link is marked as the backup transmission link; if the first link score is less than or equal to the second link score, it is determined whether the second link score is greater than the preset score threshold; if the second link score is greater than the preset score threshold, the second communication link is marked as the main transmission link, and the first communication link is marked as the backup transmission link; when the first link score is less than the preset score threshold, and the first link score is less than the second link score, the second communication link is marked as the main transmission link, and the first communication link is marked as the backup transmission link.

[0044] Furthermore, the calculation results of the first link score and the second link score are stored in a link score database according to the judgment result.

[0045] S3: Sending the original data packet and the backup data packet of the original data packet to the dual communication links according to the judgment result, and collecting the data transmission status within the receiving time window.

[0046] Specifically, a layered encryption mechanism is used to add a serial number identifier and a timestamp identifier to the original data packet, and send it through the main transmission link; at the same time, the original data packet is copied to generate a backup data packet, and sent through the backup transmission link, where the backup data packet inherits the serial number identifier and timestamp identifier of the original data packet.

[0047] Furthermore, a receiving time window is set at the receiving end to collect data transmission status, and the data transmission status is stored in a transmission status database, wherein the data transmission status includes the data packet arrival time, data packet integrity flag, data packet receiving sequence and data packet link identifier.

[0048] S4: When the original data packet is detected to be lost within the receiving time window, a backup data packet of the original data packet is extracted for data recovery, and the link score of the original data packet is recalculated.

[0049] Specifically, based on the serial number identifier and timestamp identifier of the lost data packet, the corresponding backup data packet is extracted from the data stream of the backup transmission link; the backup data packet is integrity checked, and after confirming that the backup data packet is not damaged, the backup data packet is transmitted to the application layer to complete data recovery.

[0050] Furthermore, if it is detected that the checksum of the backup data packet is inconsistent with the expected checksum, or the frame header identifier of the backup data packet is incorrect, or the frame tail identifier of the backup data packet is incorrect, the backup data packet is determined to be damaged and the data packet recovery process is re-triggered; if the backup data packet passes the integrity check, the backup data packet is transmitted to the application layer to complete data recovery.

[0051] Furthermore, the packet loss event is recorded, the packet loss rate value of the main transmission link is updated, and the link score of the main transmission link is recalculated according to the preset weighting coefficient in combination with the currently collected signal strength value and data delay value; when the link score of the main transmission link is less than the preset threshold, the transmission roles of the main transmission link and the backup transmission link are switched.

[0052] It should be noted that the preset threshold is a dynamic adaptive parameter determined based on multiple factors including industrial site application requirements, historical statistical data, real-time network load, application service priority, and environmental interference level. Through a comprehensive evaluation of these factors, the system can flexibly adjust the link switching strategy according to the actual working environment and business needs, thereby ensuring high-reliability transmission of the industrial wireless network.

[0053] Furthermore, this embodiment also provides a high-reliability transmission system for a wireless network based on dual-link redundancy, including: a data acquisition module, used to establish dual communication links and collect link quality data of the dual communication links; a link quality calculation and judgment module, used to adopt an adaptive dynamic weighted algorithm, perform weighted operations on the link quality data according to a preset weighting coefficient, obtain a first link score and a second link score, and judge the first link score and the second link score; a data transmission module, which sends the original data packet and the backup data packet of the original data packet to the dual communication links according to the judgment result, and collects the data transmission status within the receiving time window; a link score update module, which is used to extract the backup data packet of the original data packet for data recovery and recalculate the link score of the original data packet when the original data packet is detected to be lost within the receiving time window.

[0054] This embodiment also provides a computer device suitable for the high-reliability transmission method for a wireless network based on dual-link redundancy, including a memory and a processor; the memory is used to store computer-executable instructions, and the processor is used to execute the computer-executable instructions to implement the high-reliability transmission method for a wireless network based on dual-link redundancy proposed in the above embodiment.

[0055] The computer device may be a terminal, comprising a processor, a memory, a communication interface, a display screen and an input device connected via a system bus. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device comprises a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner may be achieved through WIFI, an operator network, NFC (near field communication) or other technologies. The display screen of the computer device may be a liquid crystal display or an electronic ink display screen, and the input device of the computer device may be a touch layer covering the display screen, or a button, trackball or touchpad provided on the housing of the computer device, or an external keyboard, touchpad or mouse.

[0056] This embodiment also provides a storage medium having a computer program stored thereon, which, when executed by a processor, implements the following steps: establishing dual communication links and collecting link quality data of the dual communication links; using an adaptive dynamic weighting algorithm to perform a weighted operation on the link quality data according to a preset weighting coefficient to obtain a first link score and a second link score, and judging the first link score and the second link score; sending an original data packet and a backup data packet of the original data packet to the dual communication links based on the judgment result, and collecting the data transmission status within a receiving time window; when the original data packet is detected to be lost within the receiving time window, extracting the backup data packet of the original data packet for data recovery, and recalculating the link score of the original data packet.

[0057] In summary, the present invention establishes dual communication links and collects multi-dimensional link quality data, and calculates link scores in combination with preset weighting coefficients to achieve accurate evaluation of link performance; adopts a dual-link parallel transmission mechanism, and while the main transmission link transmits the original data packet, the backup data packet is synchronously transmitted through the backup transmission link, thereby improving the efficiency of network resource utilization; when data packet loss is detected, the corresponding backup data packet can be quickly extracted from the backup transmission link for recovery, and the link performance can be timely adjusted by dynamically updating the link score, thereby reducing data recovery time and reducing the impact of transmission interruptions on system performance.

[0058] Example 2

[0059] Referring to Table 1, which is a second embodiment of the present invention, this embodiment provides a high-reliability transmission method for a wireless network based on dual-link redundancy. In order to verify the beneficial effects of the present invention, scientific demonstration is carried out through economic benefit calculation and simulation experiments.

[0060] Specifically, a test experiment was conducted in a robot control system within a smart factory. The test environment contained multiple mobile robots, automated guided vehicles (AGVs), and other wireless communication devices, creating a complex electromagnetic environment. A spectrum analyzer was first used to scan the 900MHz and 2.4GHz frequency bands, selecting the channel with the least signal interference to establish a dual-link communication system. The 900MHz band (low frequency) served as the primary communication link, and the 2.4GHz band (high frequency) served as the secondary communication link. During the experiment, a high-precision network analyzer was used to monitor link quality in real time, with a sampling period set to 10ms. The experiment lasted eight hours, with tests conducted during peak hours (8:00-12:00) and off-peak hours (14:00-18:00). To simulate a real-world industrial scenario, normal production operations, including robot movement and material transportation, were maintained during the test.

[0061] Furthermore, signal strength was measured using a professional-grade RF signal analyzer with an accuracy of -120dBm. Data latency was measured using a high-precision time synchronization server with an accuracy of better than 1μs. Packet loss rate statistics were calculated using professional network analysis software, which accurately captures the transmission status of each data packet. The test packet size was set to 1024 bytes, with a transmission frequency of 100 packets per second.

[0062] Furthermore, as shown in Table 1, in terms of signal strength, due to the adoption of a dual-band optimization mechanism, the system always maintains good signal quality, and the average signal strength is 3.5dB higher than that of a traditional single link. In terms of latency performance, thanks to the real-time link scoring and fast switching mechanism, the average system latency is reduced from 45.8ms to 28.6-35.7ms, an improvement of 37.6%. Under low load conditions, the system packet loss rate is only 0.82%, a 71.2% reduction from the 2.85% of the traditional single-link solution. Even under high load and extreme environments, the packet loss rate only rises slightly to 1.12% and 1.45%, which is still far better than traditional solutions. This is mainly due to the real-time link quality assessment and intelligent switching strategy adopted by the present invention.

[0063] Table 1 Test results

[0064]

[0065] Specifically, the present invention demonstrates superior data recovery capabilities. The adaptive dual-link solution achieves a data recovery rate of 91.5%-95.6%, while the simple dual-link solution only achieves 68.5%. More importantly, the present invention's link switching response time is only 25-35ms, approximately five times faster than the 180ms of the simple dual-link solution. This is crucial for real-time industrial control applications.

[0066] Furthermore, comprehensive performance scores show that the present invention maintains high scores of 0.86-0.93 under various operating conditions, significantly exceeding the 0.72 of a traditional single-link and the 0.81 of a simple dual-link. The system performs particularly well under low network loads, achieving a comprehensive score of 0.93, fully demonstrating the applicability and advancement of the present invention in industrial scenarios. Even in extreme environments, the system maintains a high performance of 0.86, demonstrating its strong environmental adaptability and stability.

[0067] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A high-reliability transmission method for a wireless network based on dual-link redundancy, characterized by: include, Establishing dual communication links and collecting link quality data of the dual communication links; Adopting an adaptive dynamic weighting algorithm, performing a weighted operation on the link quality data according to a preset weighting coefficient to obtain a first link score and a second link score, and judging the first link score and the second link score; Sending the original data packet and the backup data packet of the original data packet to the dual communication link according to the judgment result, and collecting the data transmission status within the receiving time window; When the original data packet is detected to be lost within the receiving time window, the backup data packet of the original data packet is extracted for data recovery and the link score of the original data packet is recalculated; The calculation formulas for the first link score and the second link score are as follows: ； in, is the score value of the i-th link, For the current moment, is the time window length, is the data delay value of the i-th link, is the delay normalization coefficient, is the packet loss rate influencing factor, is the packet loss rate of the i-th link, is the signal strength value of the i-th link, is the time attenuation coefficient, is the quality assessment function, the specific formula is as follows: ； in, is the sensitivity coefficient, is the real-time link quality value, is the quality threshold.

2. The high-reliability wireless network transmission method based on dual-link redundancy according to claim 1, wherein: The dual communication link includes a first communication link and a second communication link; the link quality data includes a signal strength value, a data delay value and a packet loss rate value; the link quality data is obtained by: The communication environment is scanned by the wireless communication module, with the scanning range covering low frequency bands and high frequency bands. The two channels with the best signal strength are selected using a channel quality assessment algorithm to respectively establish a first communication link and a second communication link, wherein the first communication link serves as a primary data transmission channel and operates in a low frequency band; the second communication link serves as a backup data transmission channel and operates in a high frequency band; Performing link quality measurement on the first communication link and the second communication link to obtain link quality data; The link quality data is collected according to a preset collection period and stored in a link status database.

3. The high-reliability wireless network transmission method based on dual-link redundancy according to claim 2, wherein: Adopting an adaptive dynamic weighting algorithm, performing a weighted operation on the link quality data according to a preset weighting coefficient to obtain a first link score and a second link score, and judging the first link score and the second link score, including: Setting a preset weighting coefficient matrix based on historical data analysis, and performing weighted calculations on the link quality data of the first communication link and the second communication link respectively by a weighted calculation unit to obtain a first link score and a second link score; A neural network model is used to extract features from the first link score and the second link score, and the extraction results are input into a link evaluation module for judgment.

4. The high-reliability wireless network transmission method based on dual-link redundancy according to claim 3, wherein: The judgment includes: When the first link score is greater than a preset score threshold, and the first link score is greater than the second link score, the first communication link is marked as a primary transmission link, and the second communication link is marked as a backup transmission link; If the first link score is less than or equal to the second link score, determining whether the second link score is greater than a preset score threshold; If the second link score is greater than the preset score threshold, the second communication link is marked as the main transmission link, and the first communication link is marked as the backup transmission link; When the first link score is less than a preset score threshold and the first link score is less than the second link score, the second communication link is marked as a primary transmission link and the first communication link is marked as a backup transmission link; The calculation results of the first link score and the second link score are stored in a link score database according to the judgment result.

5. The high-reliability wireless network transmission method based on dual-link redundancy according to claim 4, wherein: Sending the original data packet and the backup data packet of the original data packet to the dual communication link according to the judgment result, and collecting the data transmission status within the receiving time window, including: Using a layered encryption mechanism to add a sequence number identifier and a timestamp identifier to the original data packet, and sending it through the primary transmission link; At the same time, the original data packet is copied to generate a backup data packet, and the backup data packet is sent through the backup transmission link, wherein the backup data packet inherits the sequence number identifier and time stamp identifier of the original data packet; A receiving time window is set at the receiving end, data transmission status is collected, and the data transmission status is stored in a transmission status database, wherein the data transmission status includes data packet arrival time, data packet integrity flag, data packet receiving sequence and data packet link identifier.

6. The high-reliability wireless network transmission method based on dual-link redundancy according to claim 5, wherein: When the original data packet is detected to be lost within the receiving time window, the backup data packet of the original data packet is extracted for data recovery and the link score of the original data packet is recalculated, including: Extracting the corresponding backup data packet from the data stream of the backup transmission link according to the sequence number identifier and timestamp identifier of the lost data packet; Performing integrity check on the backup data packet to confirm that the backup data packet is not damaged, and then transmitting the backup data packet to the application layer to complete data recovery; Record the packet loss event, update the packet loss rate value of the primary transmission link, and recalculate the link score of the primary transmission link according to the preset weighting coefficient based on the currently collected signal strength value and data delay value; When the link score of the primary transmission link is less than a preset threshold, the transmission roles of the primary transmission link and the backup transmission link are switched.

7. A wireless network high-reliability transmission system based on dual-link redundancy, based on the wireless network high-reliability transmission method based on dual-link redundancy according to any one of claims 1 to 6, characterized in that: include, A data acquisition module, configured to establish dual communication links and collect link quality data of the dual communication links; a link quality calculation and judgment module, configured to use an adaptive dynamic weighting algorithm to perform a weighted operation on the link quality data according to a preset weighting coefficient to obtain a first link score and a second link score, and to judge the first link score and the second link score; The data transmission module sends the original data packet and the backup data packet of the original data packet to the dual communication links according to the judgment result, and collects the data transmission status within the receiving time window; The link score updating module is used to extract the backup data packet of the original data packet for data recovery and recalculate the link score of the original data packet when the original data packet is detected to be lost within the receiving time window.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the wireless network high-reliability transmission method based on dual-link redundancy according to any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the wireless network high-reliability transmission method based on dual-link redundancy according to any one of claims 1 to 6 are implemented.

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