A debugging method for radio frequency signal detection

Abstract

This invention relates to the field of radio frequency (RF) signal detection and debugging technology, and discloses an RF signal detection and debugging method, comprising: executing a backup path cost calculation strategy to calculate the load function of the backup path and calculate the path cost of the backup path based on the path length of the backup path; executing a wavelength and time slot prediction strategy to predict the earliest time of return to the target path from the fork node and the wavelength and time slot of the corresponding optical power signal; executing a time constraint cost strategy to constrain the selection of a time-limited return path from the erroneous node to the fork node within a time limit from the current time to the earliest time; executing a subcarrier stability debugging strategy to calculate the stability of the subcarrier configuration when the optical power signal returns to the target path, select the subcarrier configuration with the highest stability and fix the configuration; and executing a dual-path cost optimization strategy to select the optimal path for optical power signal transmission, thereby enhancing the continuous service capability and performance stability of the optical power link.

Description

Technical Field

[0001] This invention relates to the field of radio frequency signal detection and debugging technology, specifically to a radio frequency signal detection and debugging method. Background Technology

[0002] Radio frequency (RF) power supply control systems are widely used in processes such as plasma etching and magnetron sputtering, responsible for providing stable RF power signals to the load equipment. By modulating the RF power signal onto an optical carrier to form an optical power signal, and then transmitting it using an optical power link, seamless conversion between RF and optical signals is achieved. This method leverages the high bandwidth, low loss, and strong electromagnetic interference immunity of the optical power link to significantly improve the transmission distance, stability, and system reliability of the RF power supply output signal.

[0003] In current optical power signal transmission technologies, the selection of backup paths primarily relies on minimizing the path cost at the current moment. However, this strategy has significant shortcomings. First, the immediate optimization of path cost often ignores waiting time factors, easily leading to frequent system switches to temporary backup paths, increasing the complexity of path switching and the burden on network management. Frequent switching can not only cause discontinuities and interruptions in optical power signal transmission but also trigger network resource fluctuations and congestion, reducing overall transmission efficiency. Second, temporary backup paths typically lack comprehensive system optimization and long-term evaluation, resulting in lower transmission security and stability compared to pre-matched and optimized target paths. Target paths are configured considering factors such as network load, latency, and resource utilization, offering superior transmission performance and anti-interference capabilities. Current technologies generally lack mechanisms to prioritize target paths within a reasonable waiting time window, failing to fully leverage the transmission advantages of target paths. Finally, neglecting the balance between waiting and switching in path strategies can easily lead to increased bit error rates and transmission delays, thereby affecting the quality of service (QoS) of the RF power transmission system. In summary, the shortcomings of current technologies limit the rapid recovery and stable operation of optical power links under abnormal conditions.

[0004] This solution proposes a debugging method for radio frequency signal detection to address the problems mentioned in the background section. Summary of the Invention

[0005] This invention provides a method for debugging radio frequency signal detection, which helps to solve the problems mentioned in the background art.

[0006] This invention provides the following technical solution: a method for debugging radio frequency signal detection, comprising:

[0007] The radio frequency power signal is modulated into an optical power signal by the transmitter of the radio frequency power supply and injected into the optical power link for transmission. The optical power signal is received from the optical power link and demodulated to recover the radio frequency power signal.

[0008] The optical power link consists of a transmission link and an optical power node that processes optical power signals.

[0009] The wavelength, power, and bit error rate of the optical power signal are obtained from the optical power node, and the optical power signal is detected to be faulty.

[0010] The optical power node that detects an error in the optical power signal is recorded as the error node;

[0011] The target optical power node of the optical power signal is recorded as the endpoint node, and a set of backup paths is selected between the faulty node and the endpoint node in the optical power link.

[0012] Execute the alternative path cost calculation strategy, calculate the load function of the alternative path, and calculate the path cost of the alternative path based on the path length of the alternative path.

[0013] The optical power nodes that branch off between the current path and the initial target path of the optical power signal are denoted as branch nodes.

[0014] The wavelength and time slot prediction strategy is executed to predict the earliest time of the return path from the bifurcation node to the target path and the wavelength and time slot of the corresponding optical power signal.

[0015] The execution time-constrained cost strategy constrains the selection of a time-limited return path from the erroneous node to the fork node within the time limit from the current time to the earliest time.

[0016] Implement a subcarrier stability debugging strategy, calculate the stability of the subcarrier configuration when the optical power signal returns to the target path, select the subcarrier configuration with the highest stability, and fix the configuration.

[0017] Calculate the path cost of the target path from the branch node to the destination node;

[0018] The dual-path cost optimization strategy is implemented, which uses the sum of the path costs of the target path and the time-limited return path as the return cost, compares the path costs of the backup path, and selects the optimal path for optical power signal transmission.

[0019] Optionally, the step of acquiring the wavelength, power, and bit error rate of the optical power signal from the optical power node and detecting whether the optical power signal has errors includes:

[0020] Set the target wavelength of the optical power signal and wavelength tolerance threshold ;

[0021] Calculate the wavelength of the optical power signal and target wavelength The absolute value of the difference: ;

[0022] Set power threshold and bit error rate threshold ;

[0023] Based on the wavelength of the optical power signal ,power and bit error rate Determine if the optical power signal is faulty:

[0024] like or or If so, the optical power signal is considered to be erroneous.

[0025] Optionally, the execution of the alternative path cost calculation strategy, calculating the load function of the alternative path, and calculating the path cost of the alternative path based on the path length of the alternative path, includes:

[0026] Calculate the path cost of each alternative path in sequence:

[0027] The backup path consists of multiple transmission links connected end-to-end through optical power nodes. The backup path is represented as... ,in, Let be the path length of the i-th transmission link, and 'a' be the number of transmission links. ;

[0028] The two ends of the transmission link are respectively connected to optical power nodes, and the optical power nodes through which the optical power signal passes are respectively denoted as the transmitting node and the receiving node;

[0029] Calculate the optical power signal reaching the transmission link The time of the sending node , ,in, The propagation speed of the optical power signal. The current moment;

[0030] Calculate the optical power signal reaching the transmission link The time of the receiving node , ;

[0031] Calculate the transmission link at the current time load , ,in, For the current moment Transmission Link Bandwidth already in use For transmission links Maximum bandwidth;

[0032] Predicted optical power signal through transmission link Time transmission link load ;

[0033] ,in, The transmission link obtained by differentiating the load with respect to time The rate of change of load;

[0034] Calculate the path cost of the alternative path. , .

[0035] Optionally, the wavelength and time slot prediction strategy, which predicts the earliest time of the return path from the bifurcation node to the target path and the wavelength and time slot of the corresponding optical power signal, includes:

[0036] Obtain any transmission link from the branch node to the destination node on the target path. ;

[0037] Configure transmission link Available state functions Wherein, at time t, the wavelength of time slot S on the target path is When the optical power signal is available, ;

[0038] When the wavelength S in the time slot of the target path at time t is When the optical power signal is unavailable, then ;

[0039] Obtain transmission link Earliest available time , ;

[0040] Limit the time when the target path from the branch node to the destination node is available. , ,in, For the transmission link connecting the destination node on the target path;

[0041] Obtain all available wavelengths and time slots, and construct a two-dimensional wavelength-time slot matrix. ;

[0042] Iterate through the wavelength time slot two-dimensional matrix in sequence Substituting each wavelength and time slot into the objective function yields the earliest time of the regression target path. Corresponding wavelength and time slot ;

[0043] The objective function is ;

[0044] When the earliest moment Less than or equal to time slot At the beginning of the process, it is assumed that the optical power signal can return to the target path from the bifurcation node.

[0045] Optionally, the execution time constraint cost strategy, which constrains the selection of a time-limited return path from the erroneous node to the fork node within a time limit from the current time to the earliest time, includes:

[0046] In an optical power link, multiple return paths are obtained from the faulty node to the fork node;

[0047] Calculate the path cost for each return route:

[0048] Measure the path length of the return route ;

[0049] Calculate the time taken to calculate the return route. ;

[0050] Obtain the current load of each transmission link on the return path, calculate the average load of all transmission links, and obtain the average load of the return path. ;

[0051] The current load is the ratio of the current bandwidth of the transmission link to the maximum bandwidth of the transmission link.

[0052] Calculate the current time and the earliest moment Duration between ;

[0053] when The path cost of the return path is ;

[0054] The calculation formula is: ,in, The time-consuming weight is used to measure the proportion of time consumed to the path cost of the return route. Load weight is used to measure the proportion of load to the path cost of the return path.

[0055] Optionally, the execution time constraint cost strategy, which constrains the selection of a time-limited return path from the erroneous node to the fork node within a time limit from the current time to the earliest time, further includes:

[0056] when The path cost of the return path is ;

[0057] The calculation formula is: ,in, This is the penalty coefficient, used to adjust the severity of the penalty. It represents the increase in the path cost of the return path for every unit increase in the return path's time. ;

[0058] Choose the return route with the lowest cost as the time-limited return route.

[0059] Optionally, the implementation of the subcarrier stability debugging strategy, which calculates the stability of the subcarrier configuration when the optical power signal returns to the target path, selects the subcarrier configuration with the highest stability, and fixes the configuration, includes:

[0060] Multiple subcarriers are obtained by subdividing the optical power signal, the configuration including frequency, power and phase;

[0061] Set up multiple test configurations for debugging, and set each subcarrier as a test configuration in turn;

[0062] Current moment and the earliest moment Divide the intervals equally to obtain multiple time points;

[0063] Obtain the power of the subcarrier at each given time point, calculate the power difference between adjacent time points, and calculate the average of all power differences, denoted as the power fluctuation. ;

[0064] Obtain the signal-to-noise ratio of the subcarrier. Bit error rate ;

[0065] Calculate the stability of subcarriers , ,in, These are weighting coefficients, representing the proportions of power fluctuation, signal-to-noise ratio, and bit error rate to stability, respectively.

[0066] The test configuration with the highest stability for fixed subcarriers.

[0067] Optionally, the implementation of the dual-path cost optimization strategy, which involves using the sum of the path costs of the target path and the time-limited return path as the return cost, comparing the path costs of backup paths, and selecting the optimal path for optical power signal transmission, includes:

[0068] Calculate the path cost of the target path from the branch node to the destination node:

[0069] Obtain the path length of the j-th transmission link from the branch node to the destination node on the target path. ;

[0070] Obtain transmission link At any moment load ;

[0071] Calculate the optical power signal after transmission link Load of the transmission link ;

[0072] The calculation formula is: ,in, , From the fork node to the transmission link The path length of the intermediate nodes. From the fork node to the transmission link The duration of the intermediate nodes, The transmission link obtained by differentiating the load with respect to time The rate of change of load;

[0073] Get the path length from the branch node to the destination node on the target path. ;

[0074] Calculate the path cost from the branch node to the destination node on the target path. , Where h is the number of transmission links from the fork node to the endpoint node;

[0075] Path cost for obtaining the time-limited return route ;

[0076] Find the alternative path with the minimum path cost, and denote the path cost of the alternative path as . ;

[0077] like Then, the optical power signal is transmitted using the time-limited return path and the target path;

[0078] like Then the optical power signal is transmitted using the backup path with the lowest path cost;

[0079] Adjust the wavelength of the optical power signal to match the transmission path.

[0080] The present invention has the following beneficial effects:

[0081] 1. The debugging method for RF signal detection involves selecting a backup path when the optical power signal encounters an error. The predetermined target path is not considered the optimal backup path, even though its path cost may seem optimal at the current moment. By employing a return-waiting strategy, the optical power signal can be brought back to the previously matched target path after a short wait, thus minimizing the overall path cost. This slow-waiting strategy avoids blind switching, balancing timeliness and long-term optimality, and improving transmission efficiency and network stability. The target path is prioritized because it has been pre-optimized and matched by the system, ensuring transmission security and efficiency, reducing the potential impact and interference of frequent path switching on the optical power link, and maintaining the rational utilization of network resources and overall performance. This not only optimizes path selection but also enhances the fault tolerance and transmission continuity of the optical power link.

[0082] 2. This RF signal detection debugging method sets thresholds for optical power signal wavelength, power, and bit error rate. Through strict error detection standards, it achieves accurate identification of optical power signal error states. Setting wavelength tolerance thresholds ensures wavelength stability, while power and bit error rate thresholds ensure signal strength and quality. The combined effect of these three factors makes error judgment more scientific and reasonable, avoiding misjudgments and omissions. This multi-parameter integrated detection mechanism enhances the system's sensitivity and response speed to abnormal optical power signal states, providing a reliable basis for subsequent path switching and debugging strategies, and improving the robustness and adaptive adjustment capabilities of network transmission.

[0083] 3. This RF signal detection debugging method achieves a quantitative assessment of the backup path cost by comprehensively calculating the load function and path length of the backup path. It takes into account the current load, bandwidth occupancy, and propagation time of the transmission link, accurately reflecting the real-time network status and resource utilization efficiency of the path. The introduction of the load change rate makes the path cost assessment more dynamic and accurate, providing a scientific basis for path selection, effectively avoiding network congestion and bottlenecks, improving the rationality and flexibility of path switching decisions, and ensuring the stability and efficiency of optical power signal transmission.

[0084] 4. This RF signal detection debugging method utilizes the availability state function of the transmission link on the target path to dynamically predict the earliest time, corresponding wavelength, and time slot for the optical power signal to return from the bifurcation node to the target path, ensuring time coordination and wavelength matching during the path switching process. By constructing a two-dimensional wavelength-time slot matrix and traversing it sequentially, the availability and timing constraints of the path can be accurately calculated, avoiding transmission interruptions caused by wavelength conflicts or unavailable time slots. This improves the success rate of path return and the overall network throughput, enhancing the system's timing management and scheduling capabilities.

[0085] 5. This RF signal detection debugging method introduces a time-constrained cost strategy, limiting the return path selection range between the current time and the earliest time, effectively controlling the return path latency and network load. By comprehensively calculating indicators such as return path length, time consumption, and bandwidth utilization, a reasonable evaluation and optimization of the return path cost is achieved. This ensures both the timeliness of the return path and network load balancing, avoiding path congestion and excessive latency, thus improving the reliability and transmission efficiency of the return path and providing a solid guarantee for the rapid recovery and stable transmission of optical power signals. A penalty mechanism is used to weightedly penalize return path timeouts, improving the rigor and accuracy of path selection. The introduction of the penalty coefficient effectively constrains the return path time, preventing the selection of excessively long or inefficient paths and ensuring the rapid return of optical power signals to the fork node.

[0086] 6. This RF signal detection debugging method, through detailed sub-configuration and multi-configuration testing of subcarrier parameters such as frequency, power, and phase, and combined with power fluctuation, signal-to-noise ratio, and bit error rate to comprehensively calculate subcarrier stability, achieves fine-grained debugging and optimization of subcarrier configuration. It can select and fix the subcarrier configuration with the highest stability, significantly reducing signal fluctuations and interference during the optical power signal's return to the target path, improving signal transmission quality and anti-interference capability, and ensuring the reliability of the optical power signal debugging process and the stability of the overall system performance. Attached Figure Description

[0087] Figure 1 This is a schematic diagram of the method flow of the present invention.

[0088] Figure 2 This is a schematic diagram of the optical power link of the present invention. Detailed Implementation

[0089] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0090] Example 1, refer to Figure 1 A method for debugging radio frequency signal detection, comprising:

[0091] The radio frequency power signal is modulated into an optical power signal by the transmitter of the radio frequency power supply and injected into the optical power link for transmission. The optical power signal is received from the optical power link and demodulated to recover the radio frequency power signal.

[0092] In industrial RF power control systems, many devices utilize optimized RF-optical power fusion links and stable scheduling mechanisms, such as plasma etching equipment used for precision pattern transfer on semiconductor wafers. This relies on RF power to maintain plasma discharge and etch the material surface. If the RF power is unstable, the etching depth will be uneven, leading to a decrease in chip yield.

[0093] This solution can be directly deployed into the RF power control system of these devices, especially controlling the transmission link of RF power from the source to the load. It solves the strong demand for power continuity, low error and fast recovery in high-precision industrial equipment through "optical power link + path scheduling mechanism".

[0094] The waiting mechanism essentially seeks to restore the target path without interrupting power, thereby reducing instability caused by frequent switching and improving system continuity.

[0095] The optical power link consists of a transmission link and an optical power node for processing optical power signals. The optical power signal processing capability includes receiving optical power signals, changing the wavelength of the optical power signals, and distributing the optical power signals into different transmission links according to the wavelength.

[0096] The wavelength, power, and bit error rate of the optical power signal are obtained from the optical power node, and the optical power signal is detected for errors, including:

[0097] Set the target wavelength of the optical power signal and wavelength tolerance threshold ;

[0098] Calculate the wavelength of the optical power signal and target wavelength The absolute value of the difference:

[0099] ;

[0100] Set power threshold and bit error rate threshold ;

[0101] Based on the wavelength of the optical power signal ,power and bit error rate Determine if the optical power signal is faulty:

[0102] If so, the optical power signal is considered to be erroneous.

[0103] The optical power node that detects an error in the optical power signal is recorded as the error node;

[0104] An error in the optical power signal indicates that the current path cannot transmit the signal normally. It is necessary to switch to a usable and healthy backup path in a timely manner to ensure the continuity, reliability and quality of transmission.

[0105] The target optical power node of the optical power signal is recorded as the endpoint node, and a set of backup paths is selected between the faulty node and the endpoint node in the optical power link.

[0106] Execute the alternative path cost calculation strategy, calculate the load function of the alternative path, and calculate the path cost of the alternative path based on its path length, including:

[0107] Calculate the path cost of each alternative path in sequence:

[0108] The backup path consists of multiple transmission links connected end-to-end through optical power nodes;

[0109] In this embodiment, the alternative path is represented as a=2 represents the number of transmission links;

[0110] The two ends of the transmission link are respectively connected to optical power nodes, and the optical power nodes through which the optical power signal passes are respectively denoted as the transmitting node and the receiving node;

[0111] Calculate the optical power signal reaching the transmission link The time of the sending node , ,in, The propagation speed of the optical power signal. The current moment;

[0112] Calculate the optical power signal reaching the transmission link The time of the receiving node , ;

[0113] Calculate the transmission link at the current time The load, of which, , ;

[0114] The transmission link obtained by differentiating the load with respect to time The rate of change of load;

[0115] Calculate the load on the first link. ,in, , ;

[0116] Since the optical power signal travels from the transmitting node to the receiving node at different times, the load on the transmission link also varies. Here, we compromise by taking the load at the midpoint of the transmission link as the load when the optical power signal travels through the transmission link.

[0117] ;

[0118] Calculate the load on the second link. ,in, , ;

[0119] ;

[0120] Calculate the path cost of the alternative path. , .

[0121] The optical power nodes that branch off between the current path and the initial target path of the optical power signal are denoted as branch nodes.

[0122] The wavelength and time slot prediction strategy is implemented to predict the earliest time of the return path from the bifurcation node to the target path and the wavelength and time slot of the corresponding optical power signal, including:

[0123] Obtain any transmission link from the branch node to the destination node on the target path. The target path obtains two transmission links from the branch node to the endpoint node;

[0124] Configure transmission link Available state functions Wherein, at time t, the wavelength of time slot S on the target path is When the optical power signal is available, ;

[0125] When the wavelength S in the time slot of the target path at time t is When the optical power signal is unavailable, then ;

[0126] In this embodiment, for the first transmission link, t= The time slot S=1 on the target path has a wavelength of The optical power signal is unavailable. ;

[0127] ;

[0128] ;

[0129] ;

[0130] Obtain transmission link Earliest available time , ;

[0131] t= The time slot S=1 on the target path has a wavelength of Optical power signals are available;

[0132] t= The time slot S=1 on the target path has a wavelength of Optical power signals are available;

[0133] The earliest time ;

[0134] In existing technologies, time slots refer to transmission units in a transmission link that are divided according to time. They are used to allocate wavelengths and subcarriers in different time periods to ensure the orderly transmission of multiple optical signals on the same link. Time slots and wavelengths together form a resource matrix. By selecting appropriate combinations of time slots and wavelengths, efficient scheduling of optical power signals and their return to the target path can be achieved.

[0135] The earliest time of the second transmission link ;

[0136] Limit the time when the target path from the branch node to the destination node is available. , ,in, This is the second transmission link;

[0137] Obtain all available wavelengths and time slots, and construct a two-dimensional wavelength-time slot matrix. ;

[0138] Iterate through the wavelength time slot two-dimensional matrix in sequence Substituting each wavelength and time slot into the objective function yields the earliest time of the regression target path. Corresponding wavelength and time slot ;

[0139] The objective function is ;

[0140] The solution process is as follows:

[0141] For combinations Transmission link 1 can be used as early as 30 Transmission link 2 was the first link that could be used. The conditions are met.

[0142] For combinations Transmission link 1 can be used as early as 40 Transmission link 2 was the first link that could be used. It is smaller than the previous group.

[0143] The optimal solution is ;

[0144] When the earliest moment Less than or equal to time slot At the beginning of the process, it is assumed that the optical power signal can return to the target path from the bifurcation node.

[0145] The execution time-constrained cost strategy constrains the selection of a time-limited return path from the erroneous node to the fork node within a time limit from the current time to the earliest time, including:

[0146] In an optical power link, multiple return paths are obtained from the faulty node to the fork node;

[0147] Calculate the path cost for each return route:

[0148] Measure the path length of the return route ;

[0149] Calculate the time taken to calculate the return route. ;

[0150] Obtain the current load of each transmission link on the return path, calculate the average load of all transmission links, and obtain the average load of the return path. ;

[0151] The current load is the ratio of the current bandwidth of the transmission link to the maximum bandwidth of the transmission link.

[0152] Calculate the current time and the earliest moment Duration between ;

[0153] when The path cost of the return path is ;

[0154] The actual return trip time is less than The optical power signal can be temporarily stored at the fork node. Unlike the continuous propagation of each transmission link on the backup path, the propagation path is calculated by fully considering the return timing of the target path.

[0155] The calculation formula is: ,in, The time-consuming weight is used to measure the proportion of time consumed to the path cost of the return route. Load weight is used to measure the proportion of load to the path cost of the return path.

[0156] when The path cost of the return path is ;

[0157] The calculation formula is: ,in, This is the penalty coefficient, used to adjust the severity of the penalty. It represents the increase in the path cost of the return path for every unit increase in the return path's time. ;

[0158] Choose the return route with the lowest cost as the time-limited return route.

[0159] A comprehensive evaluation is conducted on multiple return paths from the erroneous node to the fork node to ensure that the selected path not only meets the requirements of low cost but also guarantees that the optical power signal arrives at the fork node in a timely manner within the specified time window. The optical power signal can return to the pre-optimized target path in a timely manner, achieving high efficiency and stability in path switching and avoiding transmission interruptions or signal loss due to delays.

[0160] When the time budget is not a "rigid" constraint, but a requirement that can be "complied with as much as possible but with trade-offs," hard constraints will cause the algorithm to fail to select a suboptimal solution. Therefore, a penalty term is introduced to turn the time budget into a soft constraint, which is more flexible and robust.

[0161] Implement a subcarrier stability adjustment strategy, calculate the stability of the subcarrier configuration when the optical power signal returns to the target path, select the subcarrier configuration with the highest stability, and fix the configuration, including:

[0162] Multiple subcarriers are obtained by subdividing the optical power signal, the configuration including frequency, power and phase;

[0163] Set up multiple test configurations for debugging, and debug each subcarrier as a test configuration in turn;

[0164] Current moment and the earliest moment Divide the intervals equally into four time points. , , , ;

[0165] The power of the subcarrier at time is , The power of the subcarrier at time is , The power of the subcarrier at time is , The power of the subcarrier at time is

[0166] Obtain the power of the subcarrier at each given time point, calculate the power difference between adjacent time points, and calculate the average of all power differences, denoted as the power fluctuation.

[0167] Obtain the signal-to-noise ratio of the subcarrier. Bit error rate ;

[0168] Calculate the stability of subcarriers , ,in, These are weighting coefficients, representing the proportions of power fluctuation, signal-to-noise ratio, and bit error rate to stability, respectively.

[0169] Debugging was performed on multiple test configurations, and the test configuration with the highest stability was selected;

[0170] The advantage of performing subcarrier testing during the return journey is that it allows for real-time monitoring of the link status and transmission quality of the return path, enabling timely detection and prevention of network congestion or failures, and ensuring that the return path meets time and stability requirements. This real-time, targeted testing improves the success rate and timeliness of path switching, ensuring that the optical power signal can quickly and reliably return to the target path.

[0171] Existing technology utilizes subcarriers to divide an optical power signal into multiple narrow-frequency, mutually orthogonal signal carriers for use in multicarrier modulation techniques. By subdividing frequency resources, it improves spectral efficiency and interference resistance, enabling flexible modulation and power allocation. In radio frequency power transmission systems, independent tuning and optimization of subcarriers are crucial for improving signal stability and transmission quality, ensuring the system efficiently and reliably completes data transmission tasks.

[0172] Subcarrier stability directly affects signal continuity and reliability. Stable subcarriers can reduce bit error rate, improve anti-interference capability, optimize resource utilization, and support higher transmission rates and bandwidth efficiency, thereby ensuring high-quality and efficient transmission of RF power transmission systems and improving overall network performance.

[0173] Calculate the path cost of the target path from the branch node to the destination node;

[0174] A dual-path cost optimization strategy is implemented, using the sum of the path costs of the target path and the time-limited return path as the return cost. The path costs of backup paths are compared, and the optimal path is selected for optical power signal transmission, including:

[0175] Calculate the path cost of the target path from the branch node to the destination node:

[0176] Get the path length of the first transmission link from the fork node to the endpoint on the target path. ;

[0177] Obtain the first transmission link at time load ;

[0178] Calculate the load of the transmission link when the optical power signal passes through the first transmission link. ;

[0179] The calculation formula is: ,in, , From the fork node to the transmission link The path length of the intermediate nodes. From the fork node to the transmission link The duration of the intermediate nodes, The transmission link obtained by differentiating the load with respect to time The rate of change of load;

[0180] Obtain the path length of the second transmission link from the fork node to the endpoint on the target path. ;

[0181] Obtain the second transmission link at time load ;

[0182] Calculate the load of the transmission link when the optical power signal passes through the second transmission link. The load is the ratio of the current bandwidth of the transmission link to the maximum bandwidth of the transmission link.

[0183] The calculation formula is: ,in, , From the fork node to the transmission link The path length of the intermediate nodes. From the fork node to the transmission link The duration of the intermediate nodes;

[0184] Get the path length from the branch node to the destination node on the target path. ;

[0185] Calculate the path cost from the branch node to the destination node on the target path. , Where h is the number of transmission links from the fork node to the endpoint node;

[0186] Path cost for obtaining the time-limited return route ;

[0187] Find the alternative path with the minimum path cost, and denote the path cost of the alternative path as . ;

[0188] The optical power signal is transmitted using the time-limited return path and the destination path;

[0189] It is precisely because the target path has low load in idle time slots that the cost of using the time-limited return path and the target path is minimized.

[0190] In this embodiment, refer to Figure 2 When the optical power signal is detected as erroneous at the faulty node, all backup paths are immediately calculated. At this time, the optimal backup path is not to return to the target path, but to select another transmission path. However, when the immediately optimal transmission path is abandoned and the target path is waited for to have an idle time slot, returning to the target path can achieve a lower path cost.

[0191] Adjust the wavelength of the optical power signal to match the transmission path.

[0192] In the wavelength division multiplexing (WDM) optical power link of this embodiment, the change of transmission path is usually closely related to the wavelength conversion of the optical power signal. Specifically, the system only performs the transmission path switching operation when it decides to change the wavelength used by the optical power signal. This design is based on the following considerations:

[0193] Optical power signals are transmitted in the network at specific wavelengths. Changes in wavelength correspond to adjustments in the transmission path to avoid wavelength conflicts and improve resource utilization efficiency.

[0194] If there is no change in wavelength, the transmission path remains unchanged, avoiding the risk of network instability and signal interruption caused by frequent path switching.

[0195] By binding path switching with wavelength conversion, the system can efficiently manage network resources, achieve fault recovery, load balancing and dynamic scheduling, and ensure the continuity and transmission quality of optical signals.

[0196] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0197] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for debugging radio frequency signal detection, characterized in that, include: The radio frequency power signal is modulated into an optical power signal by the transmitter of the radio frequency power supply and injected into the optical power link for transmission. The optical power signal is received from the optical power link and demodulated to recover the radio frequency power signal. The optical power link consists of a transmission link and an optical power node that processes optical power signals. The wavelength, power, and bit error rate of the optical power signal are obtained from the optical power node, and the optical power signal is detected to be faulty. The optical power node that detects an error in the optical power signal is recorded as the error node; The target optical power node of the optical power signal is recorded as the endpoint node, and a set of backup paths is selected between the faulty node and the endpoint node in the optical power link. Execute the alternative path cost calculation strategy, calculate the load function of the alternative path, and calculate the path cost of the alternative path based on the path length of the alternative path. The optical power nodes that branch off between the current path and the initial target path of the optical power signal are denoted as branch nodes. The wavelength and time slot prediction strategy is executed to predict the earliest time of the return path from the bifurcation node to the target path and the wavelength and time slot of the corresponding optical power signal. The execution time-constrained cost strategy constrains the selection of a time-limited return path from the erroneous node to the fork node within the time limit from the current time to the earliest time. Implement a subcarrier stability debugging strategy, calculate the stability of the subcarrier configuration when the optical power signal returns to the target path, select the subcarrier configuration with the highest stability, and fix the configuration. Calculate the path cost of the target path from the branch node to the destination node; The dual-path cost optimization strategy is implemented, which uses the sum of the path costs of the target path and the time-limited return path as the return cost, compares the path costs of the backup path, and selects the optimal path for optical power signal transmission.

2. The debugging method for radio frequency signal detection according to claim 1, characterized in that, The process of acquiring the wavelength, power, and bit error rate of the optical power signal from the optical power node and detecting whether the optical power signal has errors includes: Set the target wavelength of the optical power signal and wavelength tolerance threshold ; Calculate the wavelength of the optical power signal and target wavelength The absolute value of the difference: ; Set power threshold and bit error rate threshold ; Based on the wavelength of the optical power signal ,power and bit error rate Determine if the optical power signal is faulty: like or or If so, the optical power signal is considered to be erroneous.

3. The debugging method for radio frequency signal detection according to claim 1, characterized in that, The execution of the alternative path cost calculation strategy includes calculating the load function of the alternative path and calculating the path cost of the alternative path based on its path length, including: Calculate the path cost of each alternative path in sequence: The backup path consists of multiple transmission links connected end-to-end through optical power nodes. The backup path is represented as... ,in, Let be the path length of the i-th transmission link, and 'a' be the number of transmission links. ; The two ends of the transmission link are respectively connected to optical power nodes, and the optical power nodes through which the optical power signal passes are respectively denoted as the transmitting node and the receiving node; Calculate the optical power signal reaching the transmission link The time of the sending node , ,in, The propagation speed of the optical power signal. The current moment; Calculate the optical power signal reaching the transmission link The time of the receiving node , ; Calculate the transmission link at the current time load , ,in, For the current moment Transmission Link Bandwidth already in use For transmission links Maximum bandwidth; Predicted optical power signal through transmission link Time transmission link load ; ,in, The transmission link obtained by differentiating the load with respect to time The rate of change of load; Calculate the path cost of the alternative path. , .

4. The debugging method for radio frequency signal detection according to claim 3, characterized in that, The wavelength and time slot prediction strategy predicts the earliest time of the return path from the bifurcation node to the target path and the wavelength and time slot of the corresponding optical power signal, including: Obtain any transmission link from the branch node to the destination node on the target path. ; Configure transmission link Available state functions Wherein, at time t, the wavelength of time slot S on the target path is When the optical power signal is available, ; When the wavelength S in the time slot of the target path at time t is When the optical power signal is unavailable, then ; Obtain transmission link Earliest available time , ; Limit the time when the target path from the branch node to the destination node is available. , ,in, For the transmission link connecting the destination node on the target path; Obtain all available wavelengths and time slots, and construct a two-dimensional wavelength-time slot matrix. ; Iterate through the wavelength time slot two-dimensional matrix in sequence Substituting each wavelength and time slot into the objective function yields the earliest time of the regression target path. Corresponding wavelength and time slot ; The objective function is ; When the earliest moment Less than or equal to time slot At the beginning of the process, it is assumed that the optical power signal can return to the target path from the bifurcation node.

5. The debugging method for radio frequency signal detection according to claim 4, characterized in that, The execution time constraint cost strategy constrains the selection of a time-limited return path from the erroneous node to the fork node within a time limit from the current time to the earliest time, including: In an optical power link, multiple return paths are obtained from the faulty node to the fork node; Calculate the path cost for each return route: Measure the path length of the return route ; Calculate the time taken to calculate the return route. ; Obtain the current load of each transmission link on the return path, calculate the average load of all transmission links, and obtain the average load of the return path. ; The current load is the ratio of the current bandwidth of the transmission link to the maximum bandwidth of the transmission link. Calculate the current time and the earliest moment Duration between ; when The path cost of the return path is ; The calculation formula is: ,in, The time-consuming weight is used to measure the proportion of time consumed to the path cost of the return route. Load weight is used to measure the proportion of load to the path cost of the return path.

6. The debugging method for radio frequency signal detection according to claim 5, characterized in that, The execution time constraint cost strategy, which constrains the selection of a time-limited return path from the erroneous node to the fork node within a time limit from the current time to the earliest time, also includes: when The path cost of the return path is ; The calculation formula is: ,in, This is the penalty coefficient, used to adjust the severity of the penalty. It represents the increase in the path cost of the return path for every unit increase in the return path's time. ; Choose the return route with the lowest cost as the time-limited return route.

7. The debugging method for radio frequency signal detection according to claim 4, characterized in that, The subcarrier stability adjustment strategy involves calculating the stability of the subcarrier configuration when the optical power signal returns to the target path, selecting the subcarrier configuration with the highest stability, and fixing the configuration. This includes: Multiple subcarriers are obtained by subdividing the optical power signal, the configuration including frequency, power and phase; Set up multiple test configurations for debugging, and set each subcarrier as a test configuration in turn; The current moment and the earliest moment Divide the intervals equally to obtain multiple time points; Obtain the power of the subcarrier at each given time point, calculate the power difference between adjacent time points, and calculate the average of all power differences, denoted as the power fluctuation. ; Obtain the signal-to-noise ratio of the subcarrier. Bit error rate ; Calculate the stability of subcarriers , ,in, These are weighting coefficients, representing the proportions of power fluctuation, signal-to-noise ratio, and bit error rate to stability, respectively. The test configuration with the highest stability for fixed subcarriers.

8. The debugging method for radio frequency signal detection according to claim 6, characterized in that, The dual-path cost optimization strategy involves using the sum of the path costs of the target path and the time-limited return path as the return cost, comparing the path costs of backup paths, and selecting the optimal path for optical power signal transmission. This includes: Calculate the path cost of the target path from the branch node to the destination node: Obtain the path length of the j-th transmission link from the branch node to the destination node on the target path. ; Obtain transmission link At any moment load ; Calculate the optical power signal after transmission link Load of the transmission link The load is the ratio of the current bandwidth of the transmission link to the maximum bandwidth of the transmission link; The calculation formula is: ,in, , From the fork node to the transmission link The path length of the intermediate nodes. From the fork node to the transmission link The duration of the intermediate nodes, The transmission link obtained by differentiating the load with respect to time The rate of change of load; Get the path length from the branch node to the destination node on the target path. ; Calculate the path cost from the branch node to the destination node on the target path. , Where h is the number of transmission links from the fork node to the endpoint node; Path cost for obtaining the time-limited return route ; Find the alternative path with the minimum path cost, and denote the path cost of the alternative path as . ; like Then, the optical power signal is transmitted using the time-limited return path and the target path; like Then the optical power signal is transmitted using the backup path with the lowest path cost; Adjust the wavelength of the optical power signal to match the transmission path.

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