Communication data secure transmission system and method

Abstract

The invention discloses a communication data secure transmission system and method, and relates to the technical field of communication data secure transmission, in the invention, a communication link redundancy module of an optical fiber and 5G dual-channel architecture is adopted, when a main link is interrupted or the performance is degraded, the communication link redundancy module is quickly switched to a backup link, and meanwhile, the link state and communication flow data are monitored in real time; the problem of communication interruption caused by a fault of a traditional single link architecture is effectively relieved; secondly, the signal monitoring module is combined with a frequency spectrum frequency hopping technology, dynamically adjusts frequency spectrum configuration and a routing strategy by analyzing a link signal-to-noise ratio, a load factor and a frequency spectrum utilization rate, optimizes link performance and reduces interference intensity; the encryption verification module introduces a quantum key distribution (QKD) technology to generate a dynamic key, and protects the optimized spectrum configuration and routing strategy in combination with fragmentation encryption and a distributed transmission mode, thereby fundamentally improving the confidentiality and anti-attack ability of data.

Description

Technical Field

[0001] The present invention relates to the technical field of secure transmission of communication data, and particularly to a secure transmission system and method for communication data. Background Art

[0002] The railway signal system is an important part of railway transportation. Its main functions include train operation control, dispatching command, and real-time monitoring. As the most commonly used technology in the signal system, fiber optic communication has become the backbone network for railway signal transmission due to its characteristics of high bandwidth, low latency, and anti-electromagnetic interference.

[0003] Although fiber optic communication has strong anti-electromagnetic interference ability, it is vulnerable to damage or eavesdropping in remote or exposed track areas. Once the optical cable is spliced or broken, it is easy to cause abnormal train operation or even serious accidents. Secondly, wireless communication is easily affected by environmental noise, bad weather, or spectrum interference during transmission, which is likely to cause signal loss or packet delay.

[0004] Some traditional solutions add physical protection to fiber optic lines, bury them underground or use protective sleeves, and at the same time cooperate with monitoring equipment for the integrity of the optical cable. In terms of wireless communication, the frequency allocation is optimized, and anti-interference technology is adopted to improve signal stability and reduce the risk of interference in fixed frequency bands, which alleviates the problems of fiber optic communication to a certain extent, but its effect is too limited by the particularity of the railway environment. It can be seen that the traditional communication data transmission method of the railway signal system has limitations in anti-interference ability and dynamically coping with threats, and still needs further optimization. Summary of the Invention

[0005] In view of the above existing problems, the present invention is proposed.

[0006] The present invention provides a secure transmission system and method for communication data to solve the problem of poor anti-interference ability and ineffective response to dynamic threats of the traditional communication data transmission method of the traditional railway signal system.

[0007] To solve the above technical problems, the present invention provides the following technical solutions:

[0008] In a first aspect, an embodiment of the present invention provides a secure transmission system for communication data, which includes,

[0009] A communication link redundancy module, which is used to establish a dual-channel communication architecture of fiber optic and 5G, use the fiber optic as the main link and 5G as the backup link for communication data transmission, and generate a switching trigger signal when the main link is interrupted or fails;

[0010] A signal monitoring module, which is used to receive the link status and communication traffic data of the communication link redundancy module, analyze the performance, traffic load and interference situation of the communication link by using spectrum hopping technology, adjust the spectrum configuration and routing strategy according to the analysis results, and output optimized transmission parameters;

[0011] An encryption verification module, which is based on the spectrum configuration and routing strategy adjustment scheme generated by the signal monitoring module, and uses quantum key distribution (QKD) technology to generate dynamic keys;

[0012] A link switching module, which is used to combine the encrypted data stream with the real-time link status information, run an adaptive link switching mechanism, and automatically switch to the backup link when the main link is interrupted or interfered; in addition, it simulates abnormal scenarios to dynamically adjust the link switching strategy and verify its effectiveness, and outputs verified switching response data;

[0013] An early warning module, which is used to integrate the switching response data output by the link switching module and external environment information, analyze the threat of potential disasters to the communication link through an artificial intelligence model, and generate a risk prediction report.

[0014] As a preferred solution of the communication data security transmission system described in the present invention, wherein: the communication link redundancy module monitors the link status and communication traffic data in real time.

[0015] As a preferred solution of the communication data security transmission system described in the present invention, wherein: the encryption verification module encrypts and fragments the spectrum configuration and routing strategy by combining with the sharding transmission technology, transmits the encrypted data stream in a distributed manner, and the encrypted data stream is used as the output and input to the link switching module.

[0016] In a second aspect, the present invention provides a communication data security transmission method, including,

[0017] Step S1, establishing a communication link to transmit communication data by using an optical fiber and 5G dual-channel architecture, using the optical fiber as the main link and the 5G channel as the backup link; the communication link redundancy module monitors the link status and communication traffic data in real time;

[0018] The link status includes signal strength and noise interference;

[0019] Step S2, based on the link status and communication traffic data obtained in step S1, analyzing the performance, traffic load and interference situation of the communication link by using spectrum hopping technology, and adjusting the spectrum configuration and routing strategy according to the analysis results;

[0020] Step S3: Based on the spectrum configuration and routing policy adjustment plan generated in Step S2, use Quantum Key Distribution (QKD) technology to generate dynamic keys; combine the sharding transmission technology to encrypt and shard the spectrum configuration and routing policy, and transmit them in a distributed manner. The generated encrypted data stream is used as the output and input to the link switching module.

[0021] Step S4: The encrypted data stream combines with the real-time link status information to run the adaptive link switching mechanism.

[0022] The adaptive link switching mechanism includes:

[0023] When the primary link is interrupted or interfered, switch to the backup link.

[0024] At the same time, simulate abnormal scenarios, adjust the link switching policy and verify its effectiveness, and output the verified switching response data. The abnormal scenarios include link overload and burst interference.

[0025] Step S5: Integrate the switching response data in Step S4 and the external environment information, use the Deep Q-Network (DQN) model of deep reinforcement learning to analyze the threat of potential disasters to the communication link, generate a risk prediction report, and at the same time provide optimization suggestions. The policy optimization suggestions are fed back to the communication link redundancy module.

[0026] As a preferred solution of the communication data security transmission method described in the present invention, wherein: the step of analyzing the performance, traffic load and interference situation of the communication link by using the spectrum hopping technology based on the link status and communication traffic data obtained in Step S1, and adjusting the spectrum configuration and routing policy according to the analysis results is as follows:

[0027] Use the link status data to calculate the signal-to-noise ratio of the link. The calculation formula is:

[0028]

[0029] where s k is the signal-to-noise ratio of the k-th link, a k is the signal strength of the k-th link, b k is the noise strength of the k-th link.

[0030] Calculate the load factor according to the communication traffic data. The calculation formula is:

[0031]

[0032] where c k is the load factor of the k-th link, d k is the traffic data of the k-th link, e k is the capacity of the k-th link.

[0033] Construct a spectrum usage matrix, which is represented as:

[0034]

[0035] where f is the spectrum usage matrix, and f ij is the utilization rate of the i-th frequency band in the j-th time window, g i is the usage intensity of the i-th frequency band, h j is the total available spectrum in the j-th time window.

[0036] Calculate the interference intensity of the frequency band. The calculation formula is:

[0037]

[0038] where i f is the interference intensity of the frequency band, m is the total number of links, and ∈ is a small value to avoid the denominator being zero.

[0039] Adjust the spectrum configuration by minimizing the interference intensity. The adjustment formula is:

[0040]

[0041] where f opt is the adjusted spectrum configuration, and n is the number of frequency bands.

[0042] Adjust the routing strategy according to the optimized spectrum configuration, which is expressed as:

[0043] r k = argmax(s k ·(1 - c k ))

[0044] where r k is the routing strategy of the k-th link after optimization.

[0045] As a preferred solution of the communication data secure transmission method described in the present invention, wherein: the step of generating a dynamic key by using the quantum key distribution (QKD) technology is

[0046] Generate a dynamic key by using a quantum state. The key generation formula is:

[0047] k i = h(q i , θ i ) = sin 2 (q i + θ i )

[0048] where k i is the i-th dynamic key, q i is the quantum state, and θ iTo measure the angle, h is the quantum state mapping function,

[0049] Divide the spectrum configuration and routing policy data into several segments, and each segment is expressed as:

[0050] d = {d 1 , d 2 , …, d n},

[0051] where d i is the i-th data shard, and n is the number of shards.

[0052] As a preferred solution of the communication data secure transmission method described in the present invention, wherein: the step of encrypting and sharding the spectrum configuration and routing policy and transmitting them in a distributed manner is,

[0053] Encrypt each shard to generate e i :

[0054] e i = g(d i , k i ) = d i ·cos(k i ),

[0055] where e i is the i-th encrypted shard, and g is the encryption function,

[0056] Allocate the encrypted shards to multiple paths for transmission, and the allocation formula is:

[0057] t i = r k (e i ), k ∈ {1, …, m},

[0058] where t i is the transmission path of the i-th shard.

[0059] As a preferred solution of the communication data secure transmission method described in the present invention, wherein: the step of the encrypted data stream combining with real-time link state information and running the adaptive link switching mechanism is,

[0060] Fuse the encrypted data stream, link state, and load factor, and calculate the link score matrix. The calculation formula is:

[0061] M ij = α·s j + β·c j + γ·e i ,

[0062] where e iDenote the data flow as s j Denote the link state as c j Denote the load factor as M ij is the score of the i-th data shard on the j-th link, and α, β, γ are fusion weight parameters

[0063] Select the best link for each data shard, and the selection formula is:

[0064] r i = argmax j {M ij},

[0065] where r i is the best link of the i-th data shard, and j is the link number

[0066] The switching condition of the primary link is:

[0067] M p < δ and M b > M p ,

[0068] where M p is the score of the primary link, M b is the score of the backup link, and δ is the switching threshold

[0069] Simulate the abnormal scenario C a , and adjust the link switching strategy to

[0070]

[0071] where is the adjusted score, and λ is the abnormal scenario penalty coefficient

[0072] Generate the handover response data:

[0073]

[0074] where R is the handover response data

[0075] As a preferred solution of the communication data secure transmission method described in the present invention, wherein: the external environment information includes weather and geological data

[0076] The report includes possible communication interruption or interference points

[0077] The optimization suggestions include preferentially using low-risk links or deploying redundant resources in advance

[0078] As a preferred solution of the communication data security transmission method described in the present invention, wherein: the step of integrating the handover response data and the external environment information in step S4, and analyzing the threat of potential disasters to the communication link by using the deep reinforcement learning DQN model to generate a risk prediction report and provide optimization suggestions is as follows:

[0079] Combining the handover response data R and the external environment information E to construct a comprehensive state matrix, which is expressed as:

[0080] T ij =μ·R ij +ν·E j ,

[0081] wherein, T ij is the comprehensive score of the i-th shard under the j-th link, and μ and ν are weight parameters.

[0082] According to the comprehensive state matrix, calculate the potential risk factor F i , and the calculation formula is:

[0083]

[0084] wherein, F i is the risk factor of the i-th link, k j is the link stability score, and ∈ is a small value to avoid the denominator being zero.

[0085] Use the DQN model to optimize the state T and the action A, and predict the potential risk. The prediction formula is:

[0086] P = D(T, A),

[0087] wherein, P is the risk prediction result, and D is the DQN model mapping function.

[0088] Generate optimization suggestions O according to the risk prediction: O = {x 1 , x 2},

[0089] wherein, x 1 is the preferred low-risk path, and x 2 is to deploy redundant resources in advance.

[0090] The beneficial effects of the present invention are:

[0091] The present invention adopts a communication link redundancy module with an optical fiber and 5G dual-channel architecture, which can quickly switch to the backup link when the main link is interrupted or its performance degrades. At the same time, it monitors the link status and communication traffic data in real time, effectively alleviating the communication interruption problem caused by faults in the traditional single-link architecture. Secondly, the signal monitoring module combines spectrum hopping technology. By analyzing the link signal-to-noise ratio, load factor, and spectrum utilization rate, it dynamically adjusts the spectrum configuration and routing strategy to optimize the link performance and reduce the interference intensity. The encryption and verification module introduces the quantum key distribution (QKD) technology to generate dynamic keys, and combines fragment encryption and distributed transmission methods to protect the optimized spectrum configuration and routing strategy, fundamentally improving the data confidentiality and anti-attack ability.

[0092] The link switching module integrates encrypted data streams and real-time link status information to build an adaptive link switching mechanism. It dynamically adjusts the switching strategy in abnormal scenarios, verifies and optimizes the switching response, and improves the stability and response efficiency of the link. The early warning module combines the response data of the link switching module and external environmental information to analyze the potential risks of the communication link through the deep Q-network (DQN) model, and generates a risk prediction report containing possible communication interruption points and optimization suggestions, further enhancing the system's disaster response ability.

[0093] In summary, the present invention effectively solves the problems of single link, insufficient anti-interference ability, and low data security in the traditional solution, and enhances the adaptability and stability of the link in complex environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0094] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0095] Figure 1 It is a schematic framework diagram of the communication data secure transmission system of the present invention.

[0096] Figure 2 It is a schematic flow diagram of the communication data secure transmission method of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0097] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the following will make a detailed description of the specific embodiments of the present invention with reference to the accompanying drawings of the specification.

[0098] In the following description, many specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention may be practiced in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the spirit of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0099] Secondly, as used herein, an "embodiment" or "embodiments" refers to specific features, structures, or characteristics that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0100] Embodiment 1, referring to Figure 1 and Figure 2 , this embodiment provides a communication data secure transmission system, including:

[0101] A communication link redundancy module, used to establish a dual-channel communication architecture of optical fiber and 5G, with the optical fiber as the main link and 5G as the backup link, for transmitting communication data, and generating a handover trigger signal when the main link is interrupted or fails;

[0102] The communication link redundancy module monitors the link status and communication traffic data in real time;

[0103] A signal monitoring module, used to receive the link status and communication traffic data of the communication link redundancy module, analyze the performance, traffic load, and interference conditions of the communication link using spectrum hopping technology, adjust the spectrum configuration and routing strategy according to the analysis results, and output optimized transmission parameters;

[0104] An encryption verification module, based on the spectrum configuration and routing strategy adjustment scheme generated by the signal monitoring module, uses quantum key distribution (QKD) technology to generate dynamic keys;

[0105] The encryption verification module combines the fragmentation transmission technology to encrypt and fragment the spectrum configuration and routing strategy, transmits the encrypted data stream in a distributed manner, and the encrypted data stream is used as the input to the link switching module as the output;

[0106] A link switching module, used to combine the encrypted data stream with the real-time link status information, run an adaptive link switching mechanism, and automatically switch to the backup link when the main link is interrupted or interfered; in addition, simulate abnormal scenarios to dynamically adjust the link switching strategy and verify its effectiveness, and output the verified handover response data;

[0107] An early warning module, used to integrate the handover response data output by the link switching module and the external environment information, analyze the threat of potential disasters to the communication link through an artificial intelligence model, and generate a risk prediction report.

[0108] This embodiment also provides a method for secure transmission of communication data, including:

[0109] Step S1, establish a communication link to transmit communication data using an optical fiber and 5G dual-channel architecture, with the optical fiber as the main link and the 5G channel as the backup link; the communication link redundancy module monitors the link status and communication traffic data in real time;

[0110] The link status includes signal strength and noise interference;

[0111] Step S2, based on the link status and communication traffic data obtained in Step S1, use spectrum hopping technology to analyze the performance, traffic load, and interference situation of the communication link, and adjust the spectrum configuration and routing strategy according to the analysis results;

[0112] The steps of using spectrum hopping technology to analyze the performance, traffic load, and interference situation of the communication link based on the link status and communication traffic data obtained in Step S1, and adjusting the spectrum configuration and routing strategy according to the analysis results are as follows:

[0113] Use the link status data to calculate the link signal-to-noise ratio, and the calculation formula is:

[0114]

[0115] where, s k is the signal-to-noise ratio of the k-th link, a k is the signal strength of the k-th link, b k is the noise strength of the k-th link,

[0116] Calculate the load factor according to the communication traffic data, and the calculation formula is:

[0117]

[0118] where, c k is the load factor of the k-th link, d k is the traffic data of the k-th link, e k is the capacity of the k-th link,

[0119] Construct a spectrum usage matrix, and the matrix is expressed as:

[0120]

[0121] where, f is the spectrum usage matrix, f ij is the utilization rate of the i-th frequency band in the j-th time window, g i is the usage intensity of the i-th frequency band, h j is the total available spectrum in the j-th time window,

[0122] Calculate the interference intensity of the frequency band. The calculation formula is:

[0123]

[0124] Among them, i f is the interference intensity of the frequency band, m is the total number of links, ∈ is a small value to avoid the denominator being zero.

[0125] Adjust the spectrum configuration by minimizing the interference intensity. The adjustment formula is:

[0126]

[0127] Among them, f opt is the adjusted spectrum configuration, n is the number of frequency bands.

[0128] Adjust the routing policy according to the optimized spectrum configuration, expressed as:

[0129] r k = argmax(s k ·(1 - c k ))

[0130] Among them, r k is the routing policy of the k-th link after optimization.

[0131] Specifically, by comprehensively considering the signal-to-noise ratio, load factor, and spectrum utilization rate, adjust the spectrum configuration and routing policy through a non-linear optimization method to improve the reliability and performance of the link.

[0132] Step S3: Based on the spectrum configuration and routing policy adjustment plan generated in step S2, use the quantum key distribution (QKD) technology to generate dynamic keys; combine the fragmentation transmission technology to encrypt and fragment the spectrum configuration and routing policy, and transmit them in a distributed manner. The generated encrypted data stream is used as the output and input to the link switching module.

[0133] The steps of using the quantum key distribution (QKD) technology to generate dynamic keys are as follows:

[0134] Generate dynamic keys using quantum states. The key generation formula is:

[0135] k i = h(q i , θ i ) = sin 2 (q i + θ i )

[0136] Among them, k i is the i-th dynamic key, q i is the quantum state, θ i is the measurement angle, and h is the quantum state mapping function.

[0137] Divide the spectrum configuration and routing policy data into several segments, and each segment is represented as:

[0138] d = {d 1 , d 2 , …, d n},

[0139] where d i is the i-th data shard and n is the number of shards;

[0140] The steps of encrypting and sharding the spectrum configuration and routing policy and transmitting them in a distributed manner are as follows:

[0141] Encrypt each shard to generate e i :

[0142] e i = g(d i , k i ) = d i ·cos(k i ),

[0143] where e i is the i-th encrypted shard and g is the encryption function,

[0144] Allocate the encrypted shards to multiple paths for transmission, and the allocation formula is:

[0145] t i = r k (e i ), k ∈ {1, …, m},

[0146] where t i is the transmission path of the i-th shard;

[0147] Specifically, through quantum key generation and shard encryption technology, encrypt and distribute the optimized spectrum configuration and routing policy, and combine quantum technology to improve the security of transmitted data.

[0148] Step S4, the encrypted data stream combines with real-time link status information to run the adaptive link switching mechanism;

[0149] The adaptive link switching mechanism includes:

[0150] When the primary link is interrupted or interfered with, switch to the backup link;

[0151] At the same time, simulate abnormal scenarios, adjust the link switching strategy and verify its effectiveness, and output the verified switching response data. The abnormal scenarios include link overload and burst interference;

[0152] The steps for the encrypted data stream to combine with real-time link status information and run the adaptive link switching mechanism are as follows:

[0153] Fuse the encrypted data stream, link status, and load factor, and calculate the link score matrix. The calculation formula is:

[0154] M ij = α·s j + β·c j + γ·e i ,

[0155] where e i represents the data stream, s j represents the link status, c j represents the load factor, and M ij is the score of the i-th data shard on the j-th link. α, β, and γ are fusion weight parameters.

[0156] Select the best link for each data shard. The selection formula is:

[0157] r i = argmax j {M ij}},

[0158] where r i is the best link for the i-th data shard, and j is the link number.

[0159] The switching condition for the primary link is:

[0160] M p < δ and M b > M p ,

[0161] where M p is the score of the primary link, M b is the score of the backup link, and δ is the switching threshold.

[0162] Simulate abnormal scenario C a , and adjust the link switching strategy to

[0163]

[0164] where is the adjusted score, and λ is the abnormal scenario penalty coefficient.

[0165] Generate switching response data:

[0166]

[0167] where R is the switching response data;

[0168] Specifically, by fusing real-time status with the encrypted data stream score matrix, an adaptive link switching mechanism is constructed, and various abnormal scenarios are simulated to dynamically adjust the link switching strategy, improving the stability and reliability of the link.

[0169] Step S5: Integrate the handover response data from step S4 and the external environment information, use the deep reinforcement learning DQN model to analyze the threats of potential disasters to the communication link, generate a risk prediction report, and provide optimization suggestions at the same time. The policy optimization suggestions are fed back to the communication link redundancy module.

[0170] The external environment information includes weather and geological data.

[0171] The report includes possible communication interruption or interference points.

[0172] The optimization suggestions include preferentially using low-risk links or deploying redundant resources in advance.

[0173] The steps of integrating the handover response data from step S4 and the external environment information, using the deep reinforcement learning DQN model to analyze the threats of potential disasters to the communication link, and generating a risk prediction report while providing optimization suggestions are as follows:

[0174] Combine the handover response data R and the external environment information E to construct a comprehensive status matrix, which is expressed as:

[0175] T ij =μ·R ij +ν·E j ,

[0176] where T ij is the comprehensive score of the i-th shard under the j-th link, and μ and ν are weight parameters.

[0177] According to the comprehensive status matrix, calculate the potential risk factor F i , and the calculation formula is:

[0178]

[0179] where F i is the risk factor of the i-th link, k j is the link stability score, and ∈ is a small value to avoid the denominator being zero.

[0180] Use the DQN model to optimize the state T and the action A, and predict the potential risk. The prediction formula is:

[0181] P = D(T, A),

[0182] where P is the risk prediction result, and D is the DQN model mapping function.

[0183] Generate optimization suggestions O based on risk prediction: O = {x 1 , x 2},

[0184] where x 1 is the preferred low-risk path, and x 2 is to deploy redundant resources in advance;

[0185] Specifically, by using handover response data and external environment information, analyze the potential risks of the communication link through deep reinforcement learning technology, generate optimization suggestions for the risks, and enhance the security and intelligence of the communication architecture.

[0186] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A communication data secure transmission system, characterized in that: include, Communication link redundancy module, used to establish a dual-channel communication architecture of optical fiber and 5G, with optical fiber as the main link and 5G as the backup link for communication data transmission, and generate a switching trigger signal when the main link is interrupted or fails; The signal monitoring module is used to receive the link status and communication flow data of the communication link redundancy module, analyze the performance, flow load and interference of the communication link by using spectrum hopping technology, adjust the spectrum configuration and routing strategy according to the analysis results, and output the optimized transmission parameters; The encryption verification module uses the quantum key distribution (QKD) technology to generate dynamic keys based on the spectrum configuration and routing strategy adjustment scheme generated by the signal monitoring module. The link switching module is used to combine the encrypted data stream with the real-time link status information to run the adaptive link switching mechanism, and automatically switch to the backup link when the main link is interrupted or disturbed; In addition, abnormal scenarios are simulated to dynamically adjust the link switching strategy and verify its effectiveness, and the verified switching response data is output; The early warning module is used to integrate the switching response data and external environment information output by the link switching module, analyze the threat of potential disasters to the communication link through the artificial intelligence model, and generate a risk prediction report.

2. A communication data secure transmission system as claimed in claim 1, characterized in that: The communication link redundancy module monitors the link status and communication flow data in real time.

3. A communication data secure transmission system as claimed in claim 2, characterized in that: The encryption verification module combines the fragmentation transmission technology to encrypt and fragment the spectrum configuration and routing strategy, transmits the encrypted data stream in a distributed manner, and the encrypted data stream is used as the output and input link switching module.

4. A communication data secure transmission method, based on a communication data secure transmission system according to any one of claims 1 to 3, characterized in that: include: Step S1, using optical fiber and 5G dual-channel architecture to establish a communication link to transmit communication data, with optical fiber as the main link and 5G channel as the backup link; The communication link redundancy module monitors the link status and communication flow data in real time; The link status includes signal strength and noise interference; Step S2, based on the link status and communication traffic data obtained in step S1, the performance, traffic load and interference of the communication link are analyzed using spectrum hopping technology, and the spectrum configuration and routing strategy are adjusted according to the analysis results; Step S3, based on the spectrum configuration and routing strategy adjustment plan generated in step S2, quantum key distribution QKD technology is used to generate dynamic keys; the spectrum configuration and routing strategy are encrypted and fragmented in combination with fragmentation transmission technology, and transmitted in a distributed manner, and the generated encrypted data stream is used as output and input into the link switching module; Step S4, the encrypted data stream is combined with the real-time link status information to run an adaptive link switching mechanism; The adaptive link switching mechanism includes: When the main link is interrupted or disturbed, switch to the backup link; Simulate abnormal scenarios, adjust link switching strategies and verify their effectiveness, and output verified switching response data. Abnormal scenarios include link overload and sudden interference. Step S5 integrates the switching response data of step S4 and the external environment information, uses the deep reinforcement learning DQN model to analyze the threat of potential disasters to the communication link, generates a risk prediction report, and provides optimization suggestions. The strategy optimization suggestions are fed back to the communication link redundancy module.

5. A communication data secure transmission method as claimed in claim 4, characterized in that: The step of analyzing the performance, traffic load and interference of the communication link based on the link status and communication traffic data obtained in step S1 by using spectrum hopping technology, and adjusting the spectrum configuration and routing strategy according to the analysis results is as follows: Using the link status data, the link signal-to-noise ratio is calculated using the following formula: Among them, s k is the signal-to-noise ratio of the kth link, a k is the signal strength of the kth link, b k is the noise intensity of the kth link, The load factor is calculated based on the communication traffic data. The calculation formula is: Among them, c k is the load factor of the kth link, d k is the traffic data of the kth link, e k is the capacity of the kth link, Construct the spectrum usage matrix, which is represented as: f={f ij }, Among them, f is the spectrum usage matrix, f ij is the utilization rate of the ith frequency band in the jth time window, g i is the usage intensity of the ith frequency band, h j is the total available spectrum in the jth time window, Calculate the frequency band interference intensity using the following formula: Among them, i f is the interference intensity of the frequency band, m is the total number of links, ∈ is a small value to avoid the denominator being zero, The spectrum configuration is adjusted by minimizing the interference intensity. The adjustment formula is: Among them, f opt is the adjusted spectrum configuration, n is the number of frequency bands, The routing strategy is adjusted according to the optimized spectrum configuration, which is expressed as: r k =argmax(s k ·(1-c k )), Among them, r k is the optimized routing strategy of the kth link.

6. A communication data secure transmission method as claimed in claim 5, characterized in that: The steps of using quantum key distribution QKD technology to generate dynamic keys are: The dynamic key is generated using quantum state, and the key generation formula is: k i =h(q i ,i i )=sin 2 (q i +θ i ), Among them, k i is the ith dynamic key, q i is the quantum state, θ i is the measured angle, h is the quantum state mapping function, The spectrum configuration and routing strategy data are divided into several segments, each of which is represented as: d={d1,d2,…,d n }, Among them, d i is the i-th data shard, and n is the number of shards.

7. A communication data secure transmission method as claimed in claim 6, characterized in that: The steps of encrypting and slicing the spectrum configuration and routing strategy and transmitting them in a distributed manner are: Encrypt each shard to generate e i : e i =g(d i ,k i )=d i ·cos(k i ), Among them, e i is the i-th encrypted fragment, g is the encryption function, The encrypted fragments are distributed to multiple paths for transmission. The distribution formula is: t i =r k (e i ),k∈{1,…,m}, Among them, t i is the transmission path of the i-th fragment.

8. A communication data secure transmission method as claimed in claim 7, characterized in that: The encrypted data stream is combined with the real-time link status information to run the adaptive link switching mechanism, The encrypted data stream, link status, and load factor are integrated to calculate the link score matrix. The calculation formula is: M ij =α·s j +β·c j +γ·e i , Among them, e i Indicates data flow, s j Indicates the link status, c j Denotes the load factor, M ij is the score of the i-th data fragment on the j-th link, α, β, γ are the fusion weight parameters, Select the best link for each data slice, the selection formula is: r i =argmax j {M ij }, where r i is the best link for the i-th data fragment, j is the link number, The switching conditions of the main link are: M p <δ and M b >M p , Among them, M p is the main link score, M b is the backup link score, δ is the switching threshold, Simulate abnormal scenario C a , adjust the link switching strategy to in, is the adjusted score, λ is the abnormal scene penalty coefficient, Generate handover response data: Wherein, R is the switching response data.

9. A communication data secure transmission method as claimed in claim 8, characterized in that: The external environmental information includes weather and geological data, The report includes possible communication interruption or interference points, The optimization suggestions include giving priority to low-risk links or deploying redundant resources in advance.

10. A communication data secure transmission method as claimed in claim 9, characterized in that: The step of integrating the switching response data and external environment information of step S4, using the deep reinforcement learning DQN model to analyze the threat of potential disasters to the communication link, generating a risk prediction report, and providing optimization suggestions is as follows: Combining the switching response data R and the external environment information E, a comprehensive state matrix is ​​constructed, and the matrix is ​​expressed as: T ij =μ·R ij +v·E j , Among them, T ij is the comprehensive score of the i-th shard under the j-th link, μ,ν are weight parameters, According to the comprehensive state matrix, calculate the potential risk factor F i , the calculation formula is: Among them, F i is the risk factor of the ith link, k j is the link stability score, ∈ is to avoid small values ​​of the denominator being zero, The DQN model is used to optimize the state T and action A to predict potential risks. The prediction formula is: P=D(T,A), Among them, P is the risk prediction result, D is the DQN model mapping function, and the optimization suggestion O is generated according to the risk prediction: O = {x1, x2}, where x1 is the priority low-risk path and x2 is the redundant resource deployed in advance.

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