Remote communication platform using wavelength division multiplexing technology

Abstract

The invention discloses a remote communication platform using a wavelength division multiplexing technology, and relates to the technical field of remote communication, and the platform comprises a remote communication platform construction module which is used for constructing the remote communication platform; the to-be-transmitted signal acquisition module is used for acquiring multiple paths of remote to-be-transmitted signals; the wavelength division multiplexing module is used for outputting an initial combined transmission signal; the signal transmission detection module is used for outputting a relay combined transmission signal; and the signal separation module is used for outputting multiple paths of remote receiving signals. The technical problem that the signal quality is difficult to guarantee in the long-distance communication process is solved, and the technical effects that the relay node is arranged between the sending end and the receiving end, and the demultiplexer of the relay node is used for carrying out segmented detection and multiplexing on multiple paths of signals, so that the stability of the signals in long-distance transmission is guaranteed are achieved.

Description

Technical Field

[0001] The present application relates to the field of long-distance communication technology, and in particular to a long-distance communication platform using wavelength division multiplexing technology. Background Art

[0002] With the rapid development of information technology, the demand for cross-regional data communication is increasing. Especially in remote office and distributed business scenarios, communication systems face many challenges. First, due to the dispersed geographical locations, it is usually expensive to use existing network resources for point-to-point transmission, which puts tremendous pressure on the construction of communication infrastructure. At the same time, the bandwidth and communication capacity of the existing network often cannot meet the needs of large-scale, multi-channel signal transmission between multiple locations at the same time. In addition, there are signal attenuation and dispersion effects in the process of optical fiber communication. Especially in long-distance transmission, the power level and transmission quality of the signal are prone to decline, which may lead to communication interruption or unstable signal transmission. For remote communication scenarios, how to maintain signal quality and reduce signal loss during transmission has become an urgent problem to be solved. At the same time, with the increase in the amount of data transmitted in remote communication scenarios, the traditional IP address allocation model is difficult to support the access and communication needs of large-scale devices, which also brings additional challenges to network management and security. In the face of these problems, the existing communication system cannot provide sufficient flexibility and scalability, thereby limiting the efficiency and reliability of remote communication. Summary of the invention

[0003] The present application solves the technical problem of difficulty in ensuring signal quality during long-distance communications by providing a remote communication platform using wavelength division multiplexing technology. It achieves the technical effect of ensuring the stability of signals during long-distance transmission by setting a relay node between the transmitting end and the receiving end and using the demultiplexer of the relay node to perform segmented detection and multiplexing of multiple signals.

[0004] The present application provides a remote communication platform using wavelength division multiplexing technology, the platform comprising: a remote communication platform construction module, used to construct the remote communication platform, the remote communication platform comprising a signal transmitting end, a signal receiving end and at least one relay node, wherein the signal transmitting end comprises a multiplexer, the signal receiving end comprises a demultiplexer, the relay node is arranged between the signal transmitting end and the signal receiving end, and each relay node comprises a multiplexer and a demultiplexer; a signal acquisition module to be transmitted, used to acquire multiple remote signals to be transmitted; a wavelength division multiplexing module, used for the remote communication platform to transmit the signal to the remote communication platform through the signal receiving end; The multiplexer at the transmitting end performs wavelength division multiplexing on the multiple channels of signals to be transmitted at different locations, and outputs an initial combined transmission signal; the signal transmission detection module is used for the demultiplexer of the relay node to separate the received initial combined transmission signal, output multiple separated transmission signals, and perform signal transmission detection on the multiple separated transmission signals. If the detection passes, the multiple separated transmission signals are wavelength division multiplexed according to the multiplexer of the relay node, and a relay combined transmission signal is output; the signal separation module is used for the signal receiving end to separate the received relay combined transmission signal, and output multiple channels of received signals at different locations.

[0005] It is proposed to construct a remote communication platform using wavelength division multiplexing technology proposed in this application, wherein the remote communication platform includes a signal sending end, a signal receiving end and at least one relay node, wherein the signal sending end includes a multiplexer, the signal receiving end includes a demultiplexer, the relay node is arranged between the signal sending end and the signal receiving end, and each relay node includes a multiplexer and a demultiplexer; obtain multiple remote signals to be transmitted; the remote communication platform wavelength division multiplexes the multiple remote signals to be transmitted through the multiplexer of the signal sending end, and outputs an initial combined transmission signal; the demultiplexer of the relay node separates the received initial combined transmission signal, outputs multiple separated transmission signals, and performs signal transmission detection on the multiple separated transmission signals. If the detection passes, wavelength division multiplexes the multiple separated transmission signals according to the multiplexer of the relay node, and outputs a relay combined transmission signal; the signal receiving end separates the received relay combined transmission signal and outputs multiple remote received signals. The technical problem of difficulty in ensuring signal quality during long-distance communication is solved, and the technical effect of ensuring the stability of signals during long-distance transmission is achieved by setting up a relay node between the sending end and the receiving end and using the demultiplexer of the relay node to perform segmented detection and multiplexing of multi-channel signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] In order to more clearly illustrate the technical solution of the embodiment of the present disclosure, the accompanying drawings of the embodiment of the present disclosure are briefly introduced below. A flow chart is used in the present application to illustrate the operations performed by the platform according to the embodiment of the present application. It should be understood that the previous or following operations are not necessarily performed precisely in order. On the contrary, various steps can be processed in reverse order or simultaneously as needed. At the same time, other operations can also be added to these processes, or one or more operations can be removed from these processes.

[0007] Figure 1 A schematic diagram of the structure of a remote communication platform using wavelength division multiplexing technology provided in an embodiment of the present application;

[0008] Figure 2 A schematic diagram of the execution process of obtaining the number of relay nodes in a remote communication platform using wavelength division multiplexing technology provided in an embodiment of the present application.

[0009] Explanation of the reference numerals: remote communication platform construction module 1, signal acquisition module for transmission 2, wavelength division multiplexing module 3, signal transmission detection module 4, signal separation module 5. DETAILED DESCRIPTION

[0010] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below.

[0011] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings. The described embodiments should not be regarded as limiting the present application. All other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of this application.

[0012] In the following description, reference is made to "some embodiments", which describe a subset of all possible embodiments, but it is understood that "some embodiments" may be the same subset or different subsets of all possible embodiments, and may be combined with each other without conflict, and the terms "first\second" involved are merely to distinguish similar objects and do not represent a specific ordering of objects. The terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, platform, product, or server that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or modules that are not clearly listed or inherent to these processes, products, or devices. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by technicians in the technical field of this application. The terms used herein are for the purpose of describing the embodiments of the present application only.

[0013] The present application embodiment provides a remote communication platform using wavelength division multiplexing technology, such as Figure 1 As shown, the platform includes:

[0014] The remote communication platform construction module 1 is used to construct a remote communication platform, wherein the remote communication platform includes a signal sending end, a signal receiving end and at least one relay node, wherein the signal sending end includes a multiplexer, the signal receiving end includes a demultiplexer, the relay node is arranged between the signal sending end and the signal receiving end, and each relay node includes a multiplexer and a demultiplexer.

[0015] In one embodiment, in the remote communication platform construction module 1, the system terminal first arranges the signal sending end at the starting point of the remote communication platform. The core component of the signal sending end includes a multiplexer, which is responsible for multiplexing multiple signals to be transmitted on different wavelengths to form an initial combined transmission signal. The sending end also has a stable optical module output to ensure the transmission quality of the signal. The signal receiving end is arranged at the end of the remote communication platform, and the core component of the receiving end is a demultiplexer. The demultiplexer is responsible for separating the received combined signal, extracting each original signal, and ensuring that the data can be accurately restored and transmitted to the corresponding receiving module. The performance of the demultiplexer directly affects the quality of the received signal, so it must be ensured that it matches the multiplexer of the sending end. On the transmission line between the signal sending end and the receiving end, relay nodes are arranged at intervals, and the number of relay nodes is at least 1, and the specific number is determined by the degree of signal attenuation. The purpose of the relay node is to deal with the attenuation problem of the signal in long-distance transmission. At each relay node, a multiplexer and a demultiplexer are configured to realize segmented signal processing. The demultiplexer of the relay node is responsible for separating the received combined signal, separating the multiple signals and performing quality detection to ensure that the transmission parameters of each signal meet the preset standards. After the signal passes the detection, the multiplexer of the relay node will wavelength-division multiplex the separated multiple signals again and continue to transmit them to the next relay node or the final receiving end. Through this configuration, it can be ensured that each transmission signal can be amplified and detected at the relay node.

[0016] Further, if Figure 2 As shown, this application provides a method for obtaining the number of relay nodes, including:

[0017] Obtain original test signal samples; the remote communication platform is tested by the original test signal samples to obtain received test signal samples under different numbers of relay nodes; perform signal comparison based on the received test signal samples and the original test signal samples to obtain signal attenuation indicators under different numbers of relay nodes; obtain the number of relay nodes k based on the signal attenuation indicators under different numbers of relay nodes, and constrain the number of relay nodes according to the size of k.

[0018] Preferably, the system terminal obtains the original test signal sample from the signal transmitting end of the remote communication platform. The signal sample is used for comparison in subsequent tests to evaluate the attenuation of the signal under different numbers of relay nodes. The acquisition of the original test signal usually includes recording the power, bit error rate, signal-to-noise ratio and other key transmission parameters of the signal so as to make accurate comparisons in subsequent processes. Subsequently, the obtained original test signal is sent through the remote communication platform, and the reception effect under different numbers of relay nodes is tested. The remote communication platform starts with one relay node and transmits the signal by gradually increasing the number of relay nodes. The signal obtained by the receiving end will be output as a receiving test signal sample. In this process, the system terminal records the receiving test signal sample under each number of relay nodes, such as signal power, bit error rate and signal-to-noise ratio. After obtaining the receiving test signal sample, the system terminal compares it with the original test signal sample. The comparison content mainly includes the power change of the signal, the increase of the bit error rate, the decrease of the signal-to-noise ratio, etc. The purpose of this process is to determine the attenuation of the signal under different numbers of relay nodes during the transmission process. The system terminal uses the minimum and maximum standardization method to standardize the parameters such as power, bit error rate, signal-to-noise ratio of the original test signal sample and the power, bit error rate, signal-to-noise ratio of the received test signal sample to obtain the original test signal standard parameter set and the received test signal standard parameter set. After that, the signal power in the original test signal standard parameter set is subtracted from the signal power in the received test signal standard parameter set to obtain the power attenuation index, the bit error rate in the received test signal standard parameter set is subtracted from the bit error rate in the original test signal standard parameter set to obtain the quality attenuation index, and the signal-to-noise ratio in the original test signal standard parameter set is subtracted from the signal-to-noise ratio in the received test signal standard parameter set to obtain the signal-to-noise ratio attenuation index. Similar operations are performed for other parameters. Then, all calculated attenuation indicators are added to obtain the signal attenuation index. For the received test signal samples under other relay node numbers, the system terminal performs the same operation to obtain the signal attenuation index under each relay node number. Then, the signal attenuation index change curve is drawn with the number of relay nodes as the horizontal axis and the signal attenuation index as the vertical axis. As the number of relay nodes increases, the signal attenuation index usually decreases gradually, but as the number of relay nodes increases, the rate of decline of the curve may slow down and enter a stable area. The system terminal looks for the inflection point of the signal attenuation index change curve, that is, the critical point where the signal quality is significantly improved. Before this point, adding relay nodes can significantly improve the signal quality; but after this point, the effect of adding relay nodes gradually decreases. The number of relay nodes at this inflection point is the most suitable k value. By using this k value as a constraint on the number of relay nodes, it can be ensured that the signal quality can be guaranteed during the signal transmission process, and unnecessary relay nodes can be reduced, so that the signal quality can be effectively controlled during each transmission process.

[0019] Furthermore, the present application provides for building a remote communication platform, including:

[0020] Obtain the optical fiber type and transmission distance of the signal transmitting end and the signal receiving end; obtain a signal attenuation characteristic curve according to the optical fiber type and transmission distance, and configure the interval of the relay node according to the signal attenuation characteristic curve.

[0021] Preferably, the system terminal obtains the type of optical fiber used in the remote communication platform and the distance information of signal transmission. The optical fiber types include but are not limited to single-mode optical fiber, multi-mode optical fiber, and erbium-doped optical fiber. Among them, single-mode optical fiber is suitable for long-distance transmission, usually capable of transmitting tens of kilometers or even hundreds of kilometers, with small signal attenuation and high bandwidth. Multi-mode optical fiber is suitable for short-distance transmission, usually with a transmission distance of several hundred meters to several kilometers, with large signal attenuation and low bandwidth. Erbium-doped optical fiber is mainly used in long-distance communication because its erbium-doped material can realize the function of optical amplification, thereby reducing the attenuation of the signal. The system terminal will obtain the specific parameters of these optical fibers, such as bandwidth, loss (loss value per kilometer), and the actual transmission distance required in the platform. Subsequently, according to the selected optical fiber type and combined with the transmission distance, a signal attenuation characteristic curve is generated. The horizontal axis of the signal attenuation characteristic curve is the transmission distance, and the vertical axis is the signal attenuation characteristic, which reflects the signal loss of the optical fiber at different transmission distances. When calculating the attenuation characteristics, the attenuation coefficient is usually multiplied by the transmission distance. The attenuation coefficient is a characteristic parameter of the optical fiber. Different optical fiber types have different attenuation coefficients. The typical attenuation coefficient of single-mode optical fiber is about 0.4dB / km, and the typical attenuation coefficient of multimode optical fiber is about 3dB / km. Erbium-doped optical fiber has a lower attenuation and has an optical amplification effect. The attenuation of the optical fiber itself can usually be ignored, and the gain of the amplifier is considered. After that, a maximum allowable signal attenuation threshold is set, which is determined by the receiving sensitivity of the platform. The system terminal combines this signal attenuation threshold with the signal attenuation characteristic curve, obtains the transmission distance that can reach this signal attenuation threshold from the signal attenuation characteristic curve, and configures the interval of the relay node according to these transmission distances. For example, if the set signal attenuation threshold is 10dB, the curve will find the corresponding transmission distance when the signal attenuation reaches this threshold. Assuming that the signal attenuation characteristic curve shows that the signal attenuation value is 10dB when the distance reaches 20 kilometers, then a relay node can be deployed at 20 kilometers. Continue to analyze forward along the curve to find the next point where the attenuation reaches 10dB. Assuming that the attenuation reaches 10dB again at a total transmission distance of 40 kilometers, another relay node is deployed at 40 kilometers. In this way, the intervals of relay nodes are gradually configured according to the signal attenuation characteristic curve at different distances, so that the system terminal can flexibly adjust the intervals of relay nodes according to the specific situation of signal attenuation, ensuring that the signal attenuation is controlled within the allowable range in each transmission section.

[0022] The signal acquisition module 2 is used to acquire multiple channels of signals to be transmitted in different locations.

[0023] In one embodiment, in the signal acquisition module 2 to be transmitted, the system terminal collects the signal currently required to be transmitted at each remote signal source node. These signals can be of various types, such as image signals of video conferences, audio signals of voice calls, or monitoring data of certain equipment. These different signals from multiple remote nodes are classified and summarized to obtain multi-channel remote signals to be transmitted, ensuring that each signal stream can be correctly distinguished and processed in the subsequent transmission process. In this process, the system terminal will mark these signals to ensure that they will not be confused during the transmission process, laying the foundation for subsequent multiplexing and transmission.

[0024] The wavelength division multiplexing module 3 is used for the remote communication platform to perform wavelength division multiplexing on the multiple channels of remote transmission signals through the multiplexer of the signal sending end, and output an initial combined transmission signal.

[0025] In one embodiment, in the wavelength division multiplexing module 3, the system terminal performs wavelength division multiplexing on multiple signals to be transmitted from different geographical locations according to the multiplexer of the signal transmitting end in the remote communication platform. The multiplexer will assign each independent signal to a different optical wavelength, so that multiple signals can be transmitted simultaneously in the same optical fiber without interfering with each other. Specifically, the multiplexer receives multiple signals from different remote nodes and assigns each signal to a different optical wavelength. For example, signal A uses wavelength 1, signal B uses wavelength 2, and so on. The purpose of this is to allow multiple signals to be transmitted in parallel in the same optical fiber while maintaining their independence. After wavelength division multiplexing, all signals are transmitted at different wavelengths, and they will be merged into a single signal stream, that is, the initial merged transmission signal. This merged signal can be efficiently transmitted in one optical fiber, and reduces the demand for physical lines, laying the foundation for long-distance transmission.

[0026] The signal transmission detection module 4 is used for the demultiplexer of the relay node to separate the received initial combined transmission signal, output a multi-channel separated transmission signal, and perform signal transmission detection on the multi-channel separated transmission signal. If the detection passes, the multi-channel separated transmission signal is wavelength-division multiplexed according to the multiplexer of the relay node to output a relay combined transmission signal.

[0027] In one embodiment, in the signal transmission detection module 4, when the relay node receives the combined transmission signal, the demultiplexer of the relay node separates the signal according to different wavelengths. Each wavelength corresponds to an independent signal stream, so after being processed by the demultiplexer, the initial combined signal is restored to the original multi-channel independent signal. After separating the signals of each channel, the quality of these separated signals is detected by the signal transmission detection model. This includes checking the power, bit error rate, signal-to-noise ratio and other parameters of each signal to ensure that there is no serious signal attenuation problem during the transmission process. If the test results show that the transmission quality of all signals meets the preset standards, the multiplexer of the relay node will wavelength-division multiplex these multi-channel signals again. In other words, the multiplexer will redistribute each signal to different wavelengths and merge them into a new signal stream. After multiplexing, the relay node outputs a combined transmission signal, i.e., a relay combined signal, which contains all separated and detected signal streams, ready to be transmitted to the next node or the final receiving end. This process ensures that during long-distance transmission, the signal can be segmented and detected at each relay node to ensure quality and maintain efficient transmission.

[0028] Furthermore, the present application provides a method for performing signal transmission detection on the demultiplexed transmission signal, including:

[0029] A signal transmission detection model is set, and the signal transmission detection model includes the power level, signal bit error rate, signal signal-to-noise ratio and dispersion effect of each signal in the multi-channel separated transmission signal; according to the power level, signal bit error rate, signal signal-to-noise ratio and dispersion effect, the transmission quality index of each signal is output; if the transmission quality index of at least one signal is less than the preset transmission quality index, the result of detection failure is output; if the transmission quality index of each signal is greater than or equal to the preset transmission quality index, the result of detection pass is output.

[0030] Preferably, in order to detect each separated transmission signal, the system terminal establishes a signal transmission detection model for signal quality evaluation, which can evaluate the power level, signal error rate, signal-to-noise ratio, dispersion effect and other parameters of each separated transmission signal, and generate the transmission quality index of each signal. In order to build this model, the system terminal collects a large amount of training data from multiple signals, which includes key parameters such as power level, bit error rate, signal-to-noise ratio and dispersion effect. Each data has a corresponding transmission quality label (TQI), which is determined based on the actual measured signal quality, and can also be manually labeled by experts based on experience. The collected data will be used for model training and evaluation. In the data preparation stage, the system terminal normalizes these signal parameters to ensure that they have the same numerical range, and usually normalizes them to the interval of [0,1] or [-1,1]. This is because the dimensions and ranges of power level, bit error rate, signal-to-noise ratio and dispersion effect are different. Failure to normalize will cause some parameters to have too much or too little impact on the model. Normalization is based on the minimum and maximum normalization method. After data normalization, the entire data set will be divided into training set, validation set and test set. Usually 70% of the data is used for training, 15% for validation, and 15% for testing. The training set is used for model parameter learning, the validation set is used for model tuning, and the test set is used for final model evaluation. When building a neural network model, the input layer needs to have at least 4 neurons, corresponding to power level, bit error rate, signal-to-noise ratio and dispersion effect. In order to capture the potential nonlinear relationship in the data, the model will set up several hidden layers. The number of hidden layers can be determined according to the complexity of the data. The common design is 1 to 3 layers, each layer contains 64 or 128 neurons, and uses ReLU (rectified linear unit) as the activation function. The output layer has only 1 neuron, which is used to generate the transmission quality indicator. Its activation function can choose linear or sigmoid function, depending on the output range of TQI. During the model training process, the mean square error (MSE) is used as the loss function to measure the difference between the transmission quality indicators predicted by the model and the actual labels. The optimization algorithm (such as Adam or SGD) is used to optimize the model parameters, and the weights in the network are updated layer by layer through the back propagation algorithm. The training process usually goes through multiple iterations (epochs). Each iteration learns the model parameters through the training set, and the validation set is used to monitor the model performance to prevent overfitting. At the end of each epoch, the model is evaluated on the validation set. If the loss on the validation set no longer decreases, the model's hyperparameters, such as the learning rate and the number of neurons, can be adjusted to improve the model's performance. After training is completed, the model is applied to the test set for final evaluation. The performance on the test set can truly reflect the generalization ability of the model. The test process will evaluate the prediction accuracy of the model on new data to ensure that the neural network can accurately predict the transmission quality indicators in actual use.After the model is trained and verified, it can be applied to the actual signal transmission process. Each time a signal is transmitted, the system terminal will input the parameters such as the power level, bit error rate, signal-to-noise ratio and dispersion effect of each separately transmitted signal into the trained signal transmission detection model. The model will generate a comprehensive transmission quality index for each separately transmitted signal based on these inputs. If the transmission quality index of at least one signal is lower than the preset transmission quality threshold, the system terminal will output a result of failure to pass the test. This means that the signal cannot continue to be transmitted efficiently and needs to be improved through amplification or other means. If the quality indicators of all separated transmission signals meet or exceed the preset transmission quality indicators, the system terminal will output a result of passing the test. At this point, the signal can continue to be transmitted to the next relay node or the final receiving end. This process ensures that the quality of all transmitted signals is strictly tested at each relay node to ensure the reliability of signal quality in long-distance transmission.

[0031] Furthermore, the present application provides a method of amplifying the multi-channel separated transmission signal, comprising:

[0032] The relay node also includes an amplifier, the amplifier input end of the relay node is connected to the demultiplexer output end of the relay node, and the amplifier output end of the relay node is connected to the multiplexer input end of the relay node; wherein, if the detection fails, the multi-channel separated transmission signal is amplified according to the amplifier of the relay node to obtain the multi-channel amplified signal, and then the multi-channel amplified signal is wavelength division multiplexed according to the multiplexer of the relay node.

[0033] Optionally, in a remote communication platform, the amplifier of the relay node is used to enhance the signal when the signal quality fails to pass the detection, so as to ensure that the quality of the transmitted signal can be maintained at a high level. When the multi-channel signals are separated by the demultiplexer of the relay node, the system terminal will perform quality detection on these separated signals. If the detection result shows that the quality of some signals does not meet the preset transmission quality index, the amplifier of the relay node will start the signal amplification process. The amplifier of the relay node is connected to the output end of the demultiplexer. When the signal detection fails, the multi-channel signals output by the demultiplexer are sent to the amplifier. The amplifier will perform independent amplification processing on each separated signal to compensate for the loss of the signal during the transmission process, restore the power level of the signal, and reduce the impact of signal degradation. The amplified multi-channel signals will be re-wavelength-division multiplexed through the multiplexer. The multiplexer will redistribute each amplified signal to different wavelengths and combine them into a combined signal stream. This combined signal contains all the enhanced signals, thereby ensuring that they can maintain good quality in the subsequent transmission. Finally, the multiplexer recombines these amplified signals into a single optical signal and outputs it for subsequent transmission. The amplified signal is better able to resist attenuation during transmission, ensuring that the signal remains high quality after passing through multiple relay nodes.

[0034] Furthermore, the present application provides a method of amplifying the multiplexed transmission signal according to the amplifier of the relay node, including:

[0035] Acquire an abnormal path separation transmission signal of the multi-path separation transmission signal, wherein the transmission quality index of the abnormal path separation transmission signal is less than the preset transmission quality index; calculate the transmission quality index difference between each path transmission quality index and the preset transmission quality index, and match each path gain coefficient according to the transmission quality index difference; and perform gain adjustment on the amplifier of the relay node according to the matched each path gain coefficient.

[0036] Optionally, during the transmission process of the remote communication platform, the signal is separated into multiple transmission signals by the demultiplexer of the relay node. In order to ensure that each signal meets the preset transmission quality standard, the system terminal needs to detect each signal to determine whether there is an abnormal signal. First, all signals separated by the demultiplexer are detected and their transmission quality indicators are checked. The system terminal compares the actual transmission quality indicator of each signal with the preset transmission quality indicator. If the transmission quality indicator of a certain signal is lower than the preset transmission quality indicator, the signal will be marked as an abnormal signal, thereby obtaining an abnormal separation transmission signal of the multi-channel separation transmission signal. For each abnormal separation transmission signal, the system terminal calculates the difference between the actual transmission quality indicator of the signal and the preset transmission quality indicator, and matches a suitable gain coefficient for each abnormal separation transmission signal according to the calculated transmission quality indicator difference. The function of the gain coefficient is to perform signal amplification compensation according to the attenuation degree of each abnormal separation transmission signal to restore the signal quality. For signals with large attenuation (large difference), a higher gain coefficient is required. For signals with small attenuation or no attenuation, the gain coefficient can be small or even zero. The gain coefficient is proportional to the transmission quality difference. Subsequently, the amplifier of the relay node is gain-adjusted according to the matched gain coefficients of each channel. When each abnormal channel separation transmission signal passes through the gain adjuster, its gain will be adjusted to an appropriate level to compensate for the attenuation generated during the transmission process. The system terminal applies the gain coefficient of each abnormal channel separation transmission signal to the amplifier amplification process to ensure that the output power of each abnormal channel separation transmission signal reaches the ideal state. After the gain adjustment is completed, the amplified abnormal channel separation transmission signal will be re-sent to the multiplexer for wavelength division multiplexing and continue the subsequent transmission process. After the gain adjustment is completed, the transmission quality of the abnormal channel separation transmission signal is compensated, and the amplified signal will be multiplexed with other normal signals into a new combined signal. This amplified and multiplexed signal has better transmission quality and can continue to be stably transmitted to the next relay node or the final receiving end.

[0037] Furthermore, the present application also provides a method of amplifying the relay combined transmission signal, including:

[0038] The relay node also includes an amplifier, and an amplifier input end of the relay node is connected to a multiplexer output end of the relay node. If the detection fails, the relay combined transmission signal is amplified according to the amplifier of the relay node.

[0039] Optionally, in a remote communication platform, after the signal is processed by the demultiplexer, each separated signal is detected. If all signals pass the detection, normal transmission continues; if the detection result shows that the quality of more than half of the signals does not meet the preset transmission quality index, these signals will be processed. In the relay node, the demultiplexed multi-channel separated transmission signals are re-wavelength-division multiplexed through the multiplexer to form a single relay combined transmission signal. This combined signal contains all the signal information of the separated transmissions. Subsequently, the combined transmission signal is amplified as a whole by the amplifier of the relay node. The amplifier input of the relay node is connected to the output of the multiplexer, which means that the multiplexed signal will be directly transmitted to the amplifier. The amplifier will enhance the entire combined signal, increase the power of the signal, and compensate for the attenuation problem generated during the previous transmission process. The amplification process is performed on the entire combined signal, so each signal is no longer amplified separately, but the power compensation of the combined signal is unified. After being processed by the amplifier, the power level of the entire relay combined transmission signal is restored. The amplified signal will continue to be transmitted to the next relay node or directly to the receiving end. At this point, the signal quality has been compensated and can continue to maintain high stability and reliability in the next transmission.

[0040] Furthermore, the present application also provides a method of amplifying the relay combined transmission signal according to the amplifier of the relay node, including:

[0041] Calculate the transmission quality index difference between each transmission quality index and the preset transmission quality index, fit the transmission quality index difference of each path, and obtain the fitted quality index difference; match the combined gain coefficient according to the fitted quality index difference; and adjust the gain of the amplifier of the relay node with the combined gain coefficient.

[0042] Optionally, the system terminal performs quality detection on each separately transmitted signal through a signal transmission detection model, evaluates the actual transmission quality index of each signal, and then calculates the difference between the transmission quality index of each signal and the preset transmission quality index. Subsequently, these differences are fitted, that is, all the differences are averaged to obtain the fitting quality index difference. Then, the combined gain coefficient is obtained according to the fitting quality index difference through the same matching method mentioned above. After that, the amplifier of the relay node is gain adjusted according to the calculated combined gain coefficient. The amplifier will adjust its gain level according to the combined gain coefficient to compensate for the attenuation in signal transmission. After the gain adjustment is completed, the amplified signal will be output at a higher power to ensure that the quality of the transmitted signal meets the preset standard.

[0043] The signal separation module 5 is used for the signal receiving end to separate the received relay combined transmission signal and output multiple remote reception signals.

[0044] In one embodiment, in the signal separation module 5, when the signal is transmitted to the final signal receiving end, the receiving end receives the combined signal transmitted from the relay node on the transmission line. This combined signal is synthesized by multiple different signals through wavelength division multiplexing technology, and contains data from different remote signal sources. The demultiplexer at the receiving end is responsible for separating the individual independent signals in the combined signal according to the wavelength. Each signal is assigned to a different optical wavelength when combined and transmitted, so the demultiplexer can extract each signal separately by identifying these wavelengths. After separation processing, the receiving end outputs multiple remote receiving signals, which correspond to different remote signal sources. Each signal is restored to its original state during the transmission process, ready for subsequent processing or use. Through this process, the receiving end successfully restores a combined transmission stream containing multiple signals into individual independent signal streams, thereby ensuring that all remote signals can be effectively transmitted and received.

[0045] The remote communication platform using wavelength division multiplexing technology according to the embodiment of the present invention is used to solve the technical problem that the signal quality is difficult to ensure during long-distance communication, and achieves the technical effect of ensuring the stability of the signal during long-distance transmission by setting a relay node between the transmitting end and the receiving end, and using the demultiplexer of the relay node to perform segmented detection and multiplexing of multi-channel signals. The remote communication platform using wavelength division multiplexing technology includes: a remote communication platform construction module 11, a signal acquisition module 22 to be transmitted, a wavelength division multiplexing module 33, a signal transmission detection module 44, and a signal separation module 55.

[0046] Although the present application makes various references to certain modules in the platform according to the embodiments of the present application, any number of different modules may be used and run on the user terminal and / or server, and the various units and modules included are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be implemented; in addition, the specific names of the functional units are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of the present invention.

[0047] The above specific implementations do not constitute a limitation on the protection scope of this application. It should be understood by those skilled in the art that various modifications, combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this application should be included in the protection scope of this application.

Claims

1. A remote communication platform using wavelength division multiplexing technology, characterized in that: The platform includes: A remote communication platform construction module, used to construct a remote communication platform, the remote communication platform includes a signal sending end, a signal receiving end and at least one relay node, wherein the signal sending end includes a multiplexer, the signal receiving end includes a demultiplexer, the relay node is arranged between the signal sending end and the signal receiving end, and each relay node includes a multiplexer and a demultiplexer; A signal acquisition module to be transmitted, used to acquire multiple channels of signals to be transmitted in different locations; A wavelength division multiplexing module, used for the remote communication platform to perform wavelength division multiplexing on the multiple channels of remote transmission signals through the multiplexer of the signal transmitting end, and output an initial combined transmission signal; A signal transmission detection module, used for the demultiplexer of the relay node to separate the received initial combined transmission signal, output a multi-channel separated transmission signal, and perform signal transmission detection on the multi-channel separated transmission signal. If the detection passes, wavelength division multiplexing is performed on the multi-channel separated transmission signal according to the multiplexer of the relay node, and a relay combined transmission signal is output; The signal separation module is used for the signal receiving end to separate the received relay combined transmission signal and output multiple remote reception signals.

2. The remote communication platform using wavelength division multiplexing technology as claimed in claim 1, characterized in that: The platform also includes: Obtaining original test signal samples; The remote communication platform performs a test using the original test signal sample to obtain received test signal samples under different numbers of relay nodes; Performing signal comparison based on the received test signal sample and the original test signal sample to obtain signal attenuation indicators under different numbers of relay nodes; According to the signal attenuation index under the different numbers of relay nodes, the number of relay nodes k is obtained, and the number of relay nodes is constrained according to the size of k.

3. The remote communication platform using wavelength division multiplexing technology as claimed in claim 1, characterized in that: The platform performs signal transmission detection on the multiplexed transmission signal, and includes: Setting a signal transmission detection model, wherein the signal transmission detection model includes a power level of each signal in a multi-channel separated transmission signal, a signal bit error rate, a signal-to-noise ratio, and a dispersion effect; Outputting the transmission quality index of each signal according to the power level, signal bit error rate, signal-to-noise ratio and dispersion effect; If the transmission quality index of at least one signal is less than the preset transmission quality index, the result of detection failure is output; if the transmission quality index of each signal is greater than or equal to the preset transmission quality index, the result of detection passing is output.

4. The remote communication platform using wavelength division multiplexing technology as claimed in claim 3, characterized in that: The relay node further comprises an amplifier, an amplifier input end of the relay node is connected to a demultiplexer output end of the relay node, and an amplifier output end of the relay node is connected to a multiplexer input end of the relay node; If the detection fails, the multi-channel separated transmission signal is amplified according to the amplifier of the relay node to obtain a multi-channel amplified signal, and then the multi-channel amplified signal is wavelength-division multiplexed according to the multiplexer of the relay node.

5. The remote communication platform using wavelength division multiplexing technology as claimed in claim 4, characterized in that: The multi-path separation transmission signal is amplified according to the amplifier of the relay node, and the platform includes: Acquire an abnormal path separation transmission signal of the multi-path separation transmission signal, wherein the transmission quality index of the abnormal path separation transmission signal is less than the preset transmission quality index; Calculating the transmission quality index difference between each transmission quality index and the preset transmission quality index, and matching each gain coefficient according to the transmission quality index difference; The amplifier of the relay node is gain-adjusted according to the matched gain coefficients of each path.

6. The remote communication platform using wavelength division multiplexing technology as claimed in claim 3, characterized in that: The relay node also includes an amplifier, and an amplifier input end of the relay node is connected to a multiplexer output end of the relay node. If the detection fails, the relay combined transmission signal is amplified according to the amplifier of the relay node.

7. The remote communication platform using wavelength division multiplexing technology as claimed in claim 6, characterized in that: The relay combined transmission signal is amplified according to the amplifier of the relay node, and the platform includes: Calculating the transmission quality index difference between each transmission quality index and the preset transmission quality index, fitting the transmission quality index difference of each channel, and obtaining the fitting quality index difference; Matching and combining gain coefficients according to the fitting quality indicator difference; The amplifier of the relay node is gain-adjusted using the combined gain coefficient.

8. The remote communication platform using wavelength division multiplexing technology as claimed in claim 1, characterized in that: After building the remote communication platform, the platform also includes: Obtaining the optical fiber type and transmission distance of the signal transmitting end and the signal receiving end; A signal attenuation characteristic curve is obtained according to the optical fiber type and the transmission distance, and the interval of the relay nodes is configured according to the signal attenuation characteristic curve.

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