A frequency band control system and control method for a WIFI antenna

Abstract

The present invention belongs to the field of antenna technology, and specifically relates to a frequency band control system and control method for a WIFI antenna. By real-time monitoring the signal strength of the current channel and analyzing the interference degree of adjacent channels, it can instantaneously respond to environmental changes and ensure effective handling of sudden interference. This method dynamically determines the target frequency band according to the interference degree and gradually and smoothly performs frequency band switching, avoiding the instability problem caused by frequent switching in traditional methods. In addition, by notifying nearby devices to synchronously adjust and sharing the finally optimized frequency band setting information, future possible interference is reduced, significantly improving the overall network stability and performance, and providing users with a more stable and high-quality wireless connection experience. This improvement not only improves the accuracy and efficiency of frequency band adjustment, but also enhances the anti-interference ability of the network.

Description

Technical Field

[0001] The present invention belongs to the technical field of antennas, and particularly relates to a frequency band control system and a control method for a WIFI antenna. Background Art

[0002] In the existing WiFi antenna frequency band control methods, static or semi-dynamic frequency band management strategies are usually adopted to optimize network performance. Static frequency band management mainly relies on preset frequency band allocation rules. Although this method is simple and easy to implement, it often fails to effectively cope with the problem of adjacent channel interference in a complex and changeable wireless environment. Semi-dynamic frequency band management reduces interference by periodically scanning and adjusting the frequency band, but its response speed is slow, and it lacks sensitivity to real-time signal quality changes.

[0003] Specifically, the prior art generally includes the following steps:

[0004] Initial frequency band selection: Select an initial frequency band according to historical data or default settings. Regular scanning: Regularly scan the signal strength and interference situation of the current channel. Frequency band adjustment: If significant interference is detected, manually or automatically switch to another preset standby frequency band. Notify neighboring devices: After the frequency band adjustment, notify nearby devices to perform synchronous adjustment through a broadcast mechanism.

[0005] Although these methods can alleviate the interference problem to a certain extent, they have the following deficiencies:

[0006] Response lag: Due to periodic scanning, it is impossible to respond to sudden interference events in real time. Coarse adjustment: The adjustment process is relatively rough, which may lead to frequent frequency band switching and affect the user experience. Lack of coordination: The frequency band adjustment between neighboring devices lacks coordination, which is likely to lead to the emergence of new interference sources.

[0007] The main problem of the above prior art is that it is impossible to respond to the signal quality degradation caused by adjacent channel interference in real time and accurately. Especially in a high-density wireless environment, the interference between channels changes rapidly and complexly, and traditional frequency band control methods are difficult to quickly adapt to and effectively handle these interferences, resulting in a decline in network performance. Summary of the Invention

[0008] The purpose of the present invention is to provide a frequency band control system and a control method for a WIFI antenna, which not only improve the accuracy and efficiency of frequency band adjustment, but also enhance the anti-interference ability of the network, providing users with a more stable and high-quality wireless connection experience, so as to solve the problems raised in the above background art.

[0009] To achieve the above purpose, on the one hand, the present invention provides a frequency band control method for a WIFI antenna, including the following steps:

[0010] Detect the signal strength of the current channel, and based on the detection result, analyze the interference degree of adjacent channels;

[0011] Determine the target frequency band to be adjusted according to the interference degree;

[0012] After selecting the target frequency band, notify nearby devices to perform synchronous adjustment, and then gradually change the currently used frequency band to the target frequency band. As the frequency band changes, monitor the signal quality in real time;

[0013] Once it is found that the signal quality has not been improved as expected, adjust to a new target frequency band according to the feedback and repeat the adjustment until the signal quality is improved;

[0014] Record the setting information of the final frequency band and share the setting information with nearby devices to reduce future interference.

[0015] Preferably, the detecting the signal strength of the current channel includes:

[0016] Calculate the channel utilization rate and determine whether there is significant interference based on the ratio of the total observation time to the busy time;

[0017] Measure the background noise level of adjacent channels and record it; if the background noise level is higher than the preset safety limit, adjust the detection frequency to monitor the channel status;

[0018] Update the channel quality evaluation parameters according to the latest collected data, and judge whether the channel condition has improved or deteriorated by comparing the changes in the old and new channel quality parameter values;

[0019] Adjust the operation strategy according to the channel quality change trend. If a deterioration trend is found, prepare a frequency band switching plan in advance to minimize the impact of potential interference on users.

[0020] Preferably, the analyzing the interference degree of adjacent channels based on the detection result includes:

[0021] Determine the signal strength reference value of the current channel;

[0022] Measure the signal strength of adjacent channels, compare it with the reference value, and calculate the difference;

[0023] Judge whether there is significant interference in adjacent channels according to the difference; if the difference exceeds the preset threshold, it is considered that there is significant interference and record the interference level;

[0024] Calculate the frequency band offset amount to be adjusted according to the interference level, and prepare for frequency band adjustment according to the calculated offset amount;

[0025] Evaluate the impact of frequency band adjustment on the current network connection. By simulating the change trend of signal quality under the new channel conditions, predict the possible performance improvement or degradation. Decide whether to perform frequency band adjustment according to the prediction results to ensure the optimization of channel selection without negative impact on network performance.

[0026] Preferably, determining the target frequency band to be adjusted according to the degree of interference includes:

[0027] Define an initial target frequency band offset according to the interference level;

[0028] Calculate the frequency interval between the current channel and adjacent channels, and select several candidate frequency bands based on this interval;

[0029] Evaluate the potential interference level of each candidate frequency band, and select the candidate frequency band with the lowest interference level as the final target frequency band;

[0030] Confirm whether the selected target frequency band meets the safety and performance standards set by the system; if it does not meet the standards, re-evaluate the remaining candidate frequency bands and select the sub-optimal option; once a target frequency band that meets the conditions is found, record its parameters.

[0031] Preferably, after selecting the target frequency band, notifying nearby devices to perform synchronous adjustment includes:

[0032] Generate a notification message containing the new frequency band information, and the notification message includes the frequency range and switching time point of the target frequency band;

[0033] Send the notification message to nearby devices through the network broadcast mechanism;

[0034] Monitor the response status of nearby devices, and judge whether each device is ready for frequency band switching based on the received confirmation information; if a device is not ready, delay its switching time point;

[0035] When all devices are ready, perform the frequency band switching operation according to the predetermined switching time point; after the switching is completed, collect the new signal quality data of each device and compare it with the previous signal quality data to evaluate the switching effect.

[0036] Preferably, gradually changing the currently used frequency band to the target frequency band includes:

[0037] Determine the step size of frequency band switching, which is calculated based on the frequency difference between the current frequency band and the target frequency band;

[0038] Adjust the current frequency band to a new temporary frequency band according to the calculated step size, record the frequency band value after each adjustment, and update the device status;

[0039] Monitor the signal quality after each frequency band adjustment step and compare it with the signal quality of the previous frequency band adjustment step; if a significant decrease in signal quality is detected, suspend further adjustment and re-evaluate whether the current frequency band setting needs fine-tuning;

[0040] After completing all the predetermined frequency band adjustment steps, confirm whether the final frequency band reaches the target frequency band; if it has not fully reached the target frequency band, adjust the step size according to the remaining frequency difference and continue the adjustment until it fully matches the target frequency band.

[0041] Preferably, when monitoring the signal quality in real time as the frequency band changes, it includes:

[0042] Set an initial frequency band adjustment step size, calculated based on the frequency difference between the current frequency band and the target frequency band;

[0043] Adjust the current frequency band according to the set step size, and immediately measure the signal quality after each adjustment. Compare the newly measured signal quality with the previous measurement result and calculate the signal quality change rate;

[0044] Dynamically adjust the next frequency band adjustment step size according to the signal quality change rate. If the signal quality significantly decreases, reduce the step size to control the frequency band adjustment. If the signal quality is stable or improves, keep the current step size unchanged;

[0045] After completing all the predetermined frequency band adjustment steps, confirm whether the final frequency band reaches the target frequency band; if it has not fully reached the target frequency band, adjust the step size again according to the remaining frequency difference and the latest signal quality change rate and continue the adjustment until it fully matches the target frequency band.

[0046] Preferably, once it is found that the signal quality has not achieved the expected improvement, adjust to a new target frequency band according to the feedback and repeat the adjustment until the signal quality improves, including:

[0047] Set a signal quality threshold to evaluate whether the signal quality under the current frequency band reaches the expected standard. If the signal quality obtained by real-time monitoring is lower than this threshold, trigger the frequency band adjustment process;

[0048] Calculate a new target frequency band based on the current frequency band and signal quality data;

[0049] Perform a frequency band switching operation according to the new target frequency band and immediately measure the new signal quality after each switch;

[0050] Dynamically adjust the subsequent frequency band change strategy according to the results of historical adjustments.

[0051] Preferably, record the setting information of the final frequency band and share the setting information with nearby devices to reduce future interference, including:

[0052] Determine the finally optimized frequency band settings, and record all relevant parameters of this frequency band setting, including the frequency range, signal strength, and switching time points;

[0053] Generate a notification message containing the optimized frequency band information, which is used to notify nearby devices to perform synchronization adjustments;

[0054] Send the notification message to nearby devices through the network broadcast mechanism, and record the reception status of each device;

[0055] Establish a shared database for storing and updating the frequency band setting information of each device; regularly check and update the information in the shared database to reflect any new optimization adjustment results; after each frequency band adjustment, update the corresponding entry in the shared database and notify nearby devices to synchronously update their internal records.

[0056] On the other hand, the present invention proposes a frequency band control system for a WIFI antenna, including:

[0057] A signal strength detection and interference analysis module for detecting the signal strength of the current channel and analyzing the interference degree of adjacent channels based on the detection results;

[0058] A target frequency band determination module for determining the target frequency band to be adjusted according to the interference degree;

[0059] A synchronization adjustment and frequency band switching module for notifying nearby devices to perform synchronization adjustments after selecting the target frequency band, and then gradually changing the currently used frequency band to the target frequency band, and real-time monitoring the signal quality as the frequency band changes;

[0060] A feedback adjustment and optimization module for, once it is found that the signal quality has not reached the expected improvement, adjusting to a new target frequency band according to the feedback and repeating the adjustment until the signal quality is improved;

[0061] A shared setting information module for recording the setting information of the final frequency band and sharing the setting information with nearby devices to reduce future interference.

[0062] The technical effects and advantages of the present invention: A frequency band control system and control method for a WIFI antenna proposed by the present invention have the following advantages compared with the prior art:

[0063] By monitoring the signal strength of the current channel in real time and analyzing the interference degree of adjacent channels, the present invention can respond immediately to environmental changes and ensure effective handling of sudden interferences. This method dynamically determines the target frequency band according to the interference degree and gradually and smoothly performs frequency band switching, avoiding the instability problem caused by frequent switching in traditional methods. In addition, by notifying nearby devices to synchronously adjust and sharing the finally optimized frequency band setting information, future possible interferences are reduced, significantly improving the overall network stability and performance and providing users with a more stable and high-quality wireless connection experience. This improvement not only improves the accuracy and efficiency of frequency band adjustment but also enhances the anti-interference ability of the network. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] Figure 1 It is a flowchart of the frequency band control method for the WIFI antenna of the present invention;

[0065] Figure 2 It is a block diagram of the frequency band control system for the WIFI antenna of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0066] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the protection scope of the present invention.

[0067] The present invention provides a frequency band control method for a WIFI antenna as shown in Figure 1 and includes the following steps:

[0068] Step 1: Detect the signal strength of the current channel, and based on the detection result, analyze the interference degree of adjacent channels;

[0069] Further, after detecting the signal strength of the current channel, it includes the following steps:

[0070] First, calculate the channel utilization rate , where Tb represents the busy time and Ta represents the total observation time; determine whether there is significant interference based on the channel utilization rate; if the utilization rate exceeds the set threshold, proceed to the next analysis; this provides basic data support for subsequent frequency band adjustment.

[0071] Next, measure the background noise level BgN of the adjacent channel and record it. Combining the results of the previous step, if the background noise level is higher than the preset safety limit, adjust the detection frequency to monitor the channel status more frequently. Measuring the background noise level of the adjacent channel can help evaluate potential interference sources and decide whether to increase the monitoring frequency based on the results to detect and handle interference problems more promptly.

[0072] Then, update the channel quality evaluation parameter Pc based on the latest collected data, using the formula Pc = Ss - BgN, where Ss represents the signal strength. By comparing the changes in the old and new channel quality parameter values, determine whether the channel condition has improved or deteriorated. By updating the channel quality evaluation parameter, the quality status of the current channel can be quantified and compared with historical data to judge the change trend of the channel condition.

[0073] Finally, adjust the subsequent operation strategy according to the channel quality change trend Trend. If a deterioration trend is found, prepare a frequency band switching plan in advance to minimize the impact of potential interference on users. Dynamically adjust the subsequent operation strategy according to the channel quality change trend, and prepare a frequency band switching plan in advance to minimize the impact of potential interference on users.

[0074] In a specific embodiment, assume that a WiFi network is being managed:

[0075] Calculate the channel utilization rate: In a 60 - second monitoring period, the channel busy time is 30 seconds. Calculate the channel utilization rate. . Since the set threshold is 40%, it is confirmed that there is significant interference, and enter the next step of analysis.

[0076] Measure the background noise level: The measured background noise level of the adjacent channel is - 80 dBm, and the preset safety limit is - 75 dBm. Since the background noise level is higher than the safety limit, the system decides to increase the detection frequency to monitor the channel status more frequently.

[0077] Update the channel quality evaluation parameter: The current signal strength is - 60 dBm, and the background noise level is - 80 dBm. Calculate the channel quality evaluation parameter Pc = (-60) - (-80) = 20 dB. By comparing the changes in the old and new channel quality parameter values, it is found that the channel condition has deteriorated.

[0078] Adjust the operation strategy: According to the channel quality change trend, the system confirms that the channel condition is deteriorating and prepares a frequency band switching plan in advance. Select a new target frequency band for switching and notify nearby devices to adjust synchronously to minimize the impact of potential interference on users.

[0079] Through the above steps, the present invention can respond to the signal quality degradation problem caused by adjacent channel interference in real time and accurately, improving the stability and performance of the overall network.

[0080] Further, when analyzing the interference degree of adjacent channels based on the detection results, the following steps are included:

[0081] First, determine the signal strength reference value Sb of the current channel; then, measure the signal strength Sa of the adjacent channel and compare it with Sb to calculate the difference Dif = Sa - Sb; by determining the signal strength reference value of the current channel, a reference point is provided for subsequent interference analysis to ensure a clear standard when comparing measurement results.

[0082] Then, judge whether there is significant interference in the adjacent channel according to the difference Dif; if Dif exceeds the preset threshold, it is considered that there is significant interference, and record the interference level Ig = Dif / Th, where Th is the set interference threshold; by measuring the signal strength of the adjacent channel and comparing it with the reference value, the interference degree of the adjacent channel on the current channel can be quantified to help judge whether there is significant interference.

[0083] Next, calculate the frequency band offset amount Fo to be adjusted according to the interference level Ig, using the formula , where K is a constant coefficient used to convert the interference level into the actual frequency band offset amount; prepare for frequency band adjustment according to the calculated offset amount; judge whether there is significant interference in the adjacent channel according to the signal strength difference and record the interference level, providing a basis for subsequent frequency band adjustment.

[0084] Finally, evaluate the impact of the frequency band adjustment on the current network connection by simulating the change trend Tq of the signal quality under the new channel conditions to predict possible performance improvement or degradation; decide whether to perform the frequency band adjustment according to the prediction results to ensure optimizing the channel selection without negative impact on the network performance; calculate the frequency band offset amount to be adjusted according to the interference level, providing specific numerical guidance for the frequency band adjustment to ensure the adjustment process is accurate and effective. By simulating the change trend of the signal quality under the new channel conditions, predict the possible performance improvement or degradation brought by the frequency band adjustment to ensure optimizing the channel selection without negative impact on the network performance.

[0085] In a specific embodiment, it is assumed that a WiFi network is being managed:

[0086] Determine the signal strength reference value of the current channel: In an initial state, the measured signal strength of the current channel is -65 dBm, and Sb = -65 dBm is set.

[0087] Measure the signal strength of adjacent channels and calculate the difference: Assume that the measured signal strength of adjacent channels is -60 dBm, then the signal strength difference Dif = (-60) - (-65) = 5 dB. If the preset threshold is 3 dB, it is considered that there is significant interference.

[0088] Determine whether there is significant interference in adjacent channels and record the interference level: Assume that the signal strength difference Dif = 5 dB and the interference threshold Th = 3 dB, then the interference level Ig = 5 / 3 ≈ 1.67. Record this interference level for subsequent use.

[0089] Calculate the frequency band offset to be adjusted: Assume that the interference level Ig = 1.67 and the constant coefficient K = 2 MHz / unit interference level, then the frequency band offset . According to the calculated offset, prepare for frequency band adjustment.

[0090] Evaluate the impact of frequency band adjustment on network connection: Assume that under the new channel conditions, the simulated signal quality change trend Tq shows that the signal strength increases from -65 dBm to -62 dBm, indicating that the signal quality has improved. Therefore, it is decided to perform frequency band adjustment and notify nearby devices to synchronize the adjustment.

[0091] Step 2: Determine the target frequency band to be adjusted according to the interference degree; specifically including the following steps:

[0092] First, according to the interference level Ig calculated in the previous step, define an initial target frequency band offset Fo_initial; if the interference level is high, set a larger offset to ensure a significant improvement in signal quality; otherwise, set a smaller offset;

[0093] Next, calculate the frequency interval FreqGap between the current channel and adjacent channels, and select several candidate frequency bands based on this interval; the selection criterion is: the frequency interval of each candidate frequency band needs to satisfy FreqGap_new > FreqGap, where FreqGap_new is the frequency interval between the new frequency band and the nearest neighbor channel; by calculating the frequency interval between the current channel and adjacent channels and selecting several candidate frequency bands based on this interval, ensure that the newly selected frequency band can provide better isolation and reduce potential interference.

[0094] Then, evaluate the potential interference level Ip of each candidate frequency band through the formula to quantify the possible interference impact; select the candidate frequency band with the lowest interference level as the final target frequency band to ensure the best signal quality after frequency band adjustment;

[0095] Finally, confirm whether the selected target frequency band meets the safety and performance standards set by the system; if it does not meet the standards, re-evaluate the remaining candidate frequency bands and select the sub-optimal option; once a target frequency band that meets the conditions is found, record its parameters and prepare to notify the relevant devices for synchronous adjustment; by confirming whether the selected target frequency band meets the safety and performance standards set by the system, ensure that the network connection after frequency band adjustment is stable and efficient.

[0096] In a specific embodiment, assume that a WiFi network is being managed:

[0097] Define the initial target frequency band offset: The calculated interference level Ig = 1.67. Since the interference level is high, set a large initial frequency band offset Fo_initial = 4 MHz.

[0098] Calculate the frequency interval and select candidate frequency bands: The frequency interval FreqGap between the current channel and the adjacent channel is 20 MHz. When selecting a new frequency band, ensure that the frequency interval FreqGap_new between the new frequency band and the nearest neighbor channel is greater than 20 MHz. For example, select a new frequency band such that the frequency interval between it and the nearest neighbor channel is 30 MHz.

[0099] Evaluate the potential interference level of the candidate frequency bands: Assume the interference level Ig = 1.67, the frequency interval FreqGap between the current channel and the adjacent channel is 20 MHz, and the frequency interval FreqGap_new between the new frequency band and the nearest neighbor channel is 30 MHz, then the potential interference level ... Select the candidate frequency band with the lowest interference level as the final target frequency band.

[0100] Confirm that the target frequency band meets the safety and performance standards: Assume the selected target frequency band is a new frequency band with a frequency interval of 30 MHz. After evaluation, its potential interference level Ip = 1.11 is found. If this frequency band meets the safety and performance standards set by the system, record its parameters and prepare to notify the relevant devices for synchronous adjustment. If it does not meet the standards, re-evaluate the remaining candidate frequency bands and select the sub-optimal option.

[0101] Through the above steps, the present invention can accurately determine the target frequency band that needs to be adjusted, ensuring the optimization of channel selection without negatively affecting network performance.

[0102] Step 3: After selecting the target frequency band, notify the nearby devices for synchronous adjustment, and then gradually change the currently used frequency band to the target frequency band. As the frequency band changes, monitor the signal quality in real time;

[0103] Furthermore, when notifying the nearby devices for synchronous adjustment after selecting the target frequency band, the following steps are included:

[0104] First, generate a notification message Msg containing new frequency band information; this message includes the frequency range of the target frequency band and the handover time point Ts; ensure that all relevant information is complete and accurate so that nearby devices can correctly parse and execute it;

[0105] Next, send the notification message Msg to nearby devices through the network broadcast mechanism; use the broadcast protocol to ensure that the message can cover all relevant connected devices and record the sending status SendSt; if the sending fails or the reception is not confirmed, resend until successful;

[0106] Then, monitor the response status RespSt of nearby devices and judge whether each device is ready for frequency band handover based on the received confirmation information; if a certain device is not ready, delay its handover time point Td = Ts + Δt, where Δt is the additional waiting time to ensure that all devices can transition smoothly;

[0107] Finally, when all devices are ready, perform the frequency band handover operation according to the predetermined handover time point Ts; after the handover is completed, collect the new signal quality data NewQ of each device and compare it with the previous signal quality data OldQ to evaluate the handover effect;

[0108] In a specific embodiment, assume that a WiFi network is being managed:

[0109] Generate a notification message containing new frequency band information:

[0110] Assume that the frequency range of the target frequency band is from 5180 MHz to 5200 MHz, and the handover time point Ts = 14:30:00.

[0111] The generated notification message Msg contains this information and ensures that all relevant information is complete and accurate.

[0112] Send the notification message through the network broadcast mechanism:

[0113] Use the broadcast protocol to send the notification message Msg to nearby devices and record the sending status SendSt.

[0114] If a certain device fails to receive the notification message successfully, resend the message until all devices confirm reception.

[0115] Monitor the response status of nearby devices:

[0116] Monitor the response status RespSt of nearby devices and judge whether each device is ready for frequency band handover based on the received confirmation information.

[0117] Suppose that during the monitoring process, it is found that a certain device is not yet ready for frequency band switching. The current switching time point is Ts = 14:30:00, and the additional waiting time is Δt = 5 minutes. Then the delayed switching time point of the device is Td = 14:35:00.

[0118] Execute the frequency band switching and evaluate the switching effect:

[0119] When all devices are ready, perform the frequency band switching operation according to the predetermined switching time point Ts = 14:30:00.

[0120] After the switching is completed, collect the new signal quality data NewQ of each device and compare it with the previous signal quality data OldQ. Suppose the new signal quality data NewQ shows a signal strength of -62 dBm, while the old signal quality data OldQ shows a signal strength of -65 dBm. Through the comparison, the performance improvement after the frequency band switching can be evaluated.

[0121] Through the above steps, the present invention can ensure that after selecting the target frequency band, nearby devices are notified to perform synchronous adjustment, and the switching effect is evaluated after the switching is completed.

[0122] Furthermore, when gradually changing the currently used frequency band to the target frequency band, the following steps are included:

[0123] First, determine the step length StepLen of the frequency band switching. This step length is calculated based on the frequency difference FreqDiff between the current frequency band and the target frequency band. The formula is StepLen = FreqDiff / N, where N is the preset number of switching steps; this step ensures a smooth frequency band adjustment process;

[0124] Next, according to the calculated step length StepLen, adjust the current frequency band to the new temporary frequency band TempFreq; record the frequency band value after each adjustment and update the device status DevSt to ensure that all relevant devices can synchronously track the frequency band change;

[0125] Then, monitor the signal quality SigQual after each frequency band adjustment step and compare it with the signal quality PrevSigQual of the previous frequency band adjustment step; if a significant decrease in signal quality is found, suspend further adjustment and re-evaluate whether the current frequency band setting needs fine-tuning;

[0126] Finally, after completing all the predetermined frequency band adjustment steps, confirm whether the final frequency band reaches the target frequency band; if it has not fully reached the target frequency band, then calculate the remaining frequency difference RemFreqDiff = target frequency band - current frequency band adjustment step length StepLen and continue to adjust until it fully matches the target frequency band;

[0127] In a specific embodiment, it is assumed that the current frequency band of 5180 MHz is gradually adjusted to the target frequency band of 5200 MHz:

[0128] Calculate the step size: The frequency difference FreqDiff = 20 MHz, the preset number of switching steps N = 4, and the step size StepLen = 20 MHz / 4 = 5 MHz.

[0129] Gradually adjust the frequency band:

[0130] First adjustment: TempFreq = 5180 MHz + 5 MHz = 5185 MHz.

[0131] Second adjustment: TempFreq = 5185 MHz + 5 MHz = 5190 MHz.

[0132] Third adjustment: TempFreq = 5190 MHz + 5 MHz = 5195 MHz.

[0133] Monitor the signal quality:

[0134] Monitor the signal quality after each adjustment. Assume that SigQual = -62 dBm after the first adjustment, SigQual = -63 dBm after the second adjustment, and SigQual = -64 dBm after the third adjustment. If a significant decrease in signal quality is detected, suspend the adjustment and re-evaluate.

[0135] Confirm the final frequency band:

[0136] Final adjustment: RemFreqDiff = 5200 MHz - 5195 MHz = 5 MHz, continue to adjust with the step size StepLen = 5 MHz, and adjust the frequency band to the target frequency band of 5200 MHz.

[0137] Through the above steps, the present invention can ensure a smooth process of frequency band adjustment, monitor the signal quality in real time, ensure that the network performance is not negatively affected, and thus provide users with a more stable and high-quality wireless connection experience.

[0138] Furthermore, when gradually changing the currently used frequency band to the target frequency band and monitoring the signal quality in real time, the following steps are included:

[0139] First, set the initial frequency band adjustment step size InitStepLen, which is calculated based on the frequency difference FreqDiff between the current frequency band and the target frequency band. The formula is InitStepLen = FreqDiff / N, where N is the preset number of switching steps; record the initial state and parameters for use in subsequent steps;

[0140] Next, adjust the current frequency band according to the set step length InitStepLen, and immediately measure the signal quality CurSigQual after each adjustment; compare the newly measured signal quality with the previous measurement result PrevSigQual, and calculate the signal quality change rate QualChangeRate = (CurSigQual - PrevSigQual) / Δt, where Δt is the time interval between two measurements;

[0141] Then, dynamically adjust the next frequency band adjustment step length NextStepLen according to the signal quality change rate QualChangeRate; if the signal quality drops significantly (i.e., QualChangeRate < 0), then reduce the step length to more finely control the frequency band adjustment, and the formula is NextStepLen = InitStepLen / 2; if the signal quality is stable or improving, keep the current step length unchanged;

[0142] Finally, after completing all the predetermined frequency band adjustment steps, confirm whether the final frequency band reaches the target frequency band; if it has not fully reached the target frequency band, then adjust the step length NextStepLen again according to the remaining frequency difference RemFreqDiff = target frequency band - current frequency band and the latest signal quality change rate QualChangeRate and continue to adjust until it fully matches the target frequency band;

[0143] In a specific embodiment, assume that the current frequency band is gradually adjusted from 5180 MHz to the target frequency band of 5200 MHz:

[0144] Set the initial step length: frequency difference FreqDiff = 20 MHz, preset number of switching steps N = 4, initial step length InitStepLen = 20 MHz / 4 = 5 MHz.

[0145] Gradually adjust the frequency band and measure the signal quality:

[0146] First adjustment: TempFreq = 5180 MHz + 5 MHz = 5185 MHz, signal quality CurSigQual = -62 dBm, previous signal quality PrevSigQual = -65 dBm, time interval Δt = 1 minute, signal quality change rate QualChangeRate = 3 dB / min.

[0147] Second adjustment: TempFreq = 5185 MHz + 5 MHz = 5190 MHz, signal quality CurSigQual = -63 dBm, previous signal quality PrevSigQual = -62 dBm, time interval Δt = 1 minute, signal quality change rate QualChangeRate = -1 dB / min.

[0148] Dynamic step size adjustment:

[0149] Since the signal quality has significantly decreased after the second adjustment (QualChangeRate < 0), the step size is reduced: NextStepLen = InitStepLen / 2 = 2.5 MHz.

[0150] Confirm the final frequency band:

[0151] Final adjustment: The remaining frequency difference RemFreqDiff = 5200 MHz - 5195 MHz = 5 MHz. Continue to adjust the step size NextStepLen = 2.5 MHz to adjust the frequency band to the target frequency band of 5200 MHz.

[0152] Through the above steps, the present invention can ensure a smooth process of frequency band adjustment, monitor the signal quality in real time, dynamically adjust the step size according to the signal quality change rate, ensure that the network performance is not negatively affected, and thus provide users with a more stable and high-quality wireless connection experience.

[0153] Step Four: Once it is found that the signal quality has not achieved the expected improvement, adjust to a new target frequency band according to the feedback and repeat the adjustment until the signal quality improves; specifically, it includes the following steps:

[0154] First, set a signal quality threshold QualThreshold to evaluate whether the signal quality under the current frequency band meets the expected standard; if the real-time monitored signal quality CurSigQual is lower than this threshold, trigger the frequency band adjustment process;

[0155] Next, based on the current frequency band and signal quality data, calculate a new target frequency band NewTargetFreq; the formula is NewTargetFreq = CurFreq + AdjustFreqOffset, where AdjustFreqOffset is the frequency offset adjusted based on the signal quality difference QualDiff = QualThreshold - CurSigQual to ensure that the new target frequency band can significantly improve the signal quality;

[0156] Then, perform a frequency band switching operation according to the new target frequency band NewTargetFreq, and immediately measure the new signal quality UpdatedSigQual after each switch; compare the new and old signal qualities. If UpdatedSigQual still does not reach QualThreshold, record the current state and enter the next adjustment;

[0157] Finally, according to the results of historical adjustments, dynamically adjust the subsequent frequency band change strategy; if the signal quality after several consecutive adjustments fails to meet the expectations, reduce the frequency band adjustment step size NextStepLen = AdjustFreqOffset / 2 and make adjustments in a more refined manner; repeat the above steps until the signal quality is steadily improved and exceeds QualThreshold;

[0158] In a specific embodiment, assume that the current frequency band of 5180 MHz is gradually adjusted to the target frequency band to improve the signal quality:

[0159] Set the signal quality threshold: The signal quality threshold QualThreshold = -60 dBm. The current signal quality CurSigQual = -65 dBm (below the threshold), triggering the frequency band adjustment process.

[0160] Calculate the new target frequency band:

[0161] The current frequency band CurFreq = 5180 MHz, and the signal quality difference QualDiff = 5 dB. Assume the frequency offset AdjustFreqOffset = 10 MHz, then the new target frequency band NewTargetFreq = 5180 MHz + 10 MHz = 5190 MHz.

[0162] Perform the frequency band switching operation according to the new target frequency band and measure the new signal quality:

[0163] After adjusting to 5190 MHz, the measured updated signal quality UpdatedSigQual = -62 dBm. Since the expected standard is not met, record the current state and prepare for the next adjustment.

[0164] Dynamically adjust the subsequent frequency band change strategy:

[0165] The signal quality after two consecutive adjustments still fails to meet the expected standard (for example, the signal quality UpdatedSigQual = -63 dBm after the second adjustment). Reduce the frequency band adjustment step size NextStepLen = 5 MHz and continue to adjust until the signal quality is steadily improved and exceeds QualThreshold = -60 dBm.

[0166] Through the above steps, the present invention can dynamically adjust the frequency band according to the real-time monitored signal quality situation to ensure the continuous optimization of network performance.

[0167] Step Five: Record the setting information of the final frequency band and share the setting information with nearby devices to reduce future interference; specifically including the following steps:

[0168] First, determine the finally optimized frequency band setting OptimizedFreq, which is the best frequency band that achieves stable signal quality after multiple adjustments; record all relevant parameters of this frequency band setting, including the frequency range, signal strength, and handover time point;

[0169] Next, generate a notification message OptMsg containing the optimized frequency band information, ensuring that the message includes all necessary details, such as OptimizedFreq and related performance metrics; this message will be used to notify nearby devices to perform synchronization adjustments;

[0170] Then, send the notification message OptMsg to nearby devices through the network broadcast mechanism and record the reception status RecvSt of each device; if a device fails to receive the notification message successfully, resend it until the reception is confirmed successfully; this step ensures that all nearby devices can obtain the latest frequency band setting information;

[0171] Finally, establish a shared database or logging system for storing and updating the frequency band setting information of each device; regularly check and update the information in the shared database to reflect any new optimization adjustment results; (Note: The shared database is used to record the frequency band setting) After each frequency band adjustment, update the corresponding entry in the shared database and notify nearby devices to synchronously update their internal records;

[0172] In a specific embodiment, assume that a WiFi network is being managed:

[0173] Determine the finally optimized frequency band setting and record relevant parameters:

[0174] Assume that after multiple adjustments, the finally optimized frequency band setting OptimizedFreq is from 5190 MHz to 5200 MHz, the signal strength is -60 dBm, and the handover time point is 14:30:00. Record these parameters for subsequent use.

[0175] Generate a notification message containing the optimized frequency band information:

[0176] The generated notification message OptMsg contains the following information:

[0177] Frequency band range: from 5190 MHz to 5200 MHz;

[0178] Signal strength: -60 dBm;

[0179] Handover time point: 14:30:00;

[0180] Send the notification message through the network broadcast mechanism and record the reception status:

[0181] Use a broadcast protocol to send a notification message OptMsg to nearby devices and record the reception status RecvSt of each device. If a device fails to successfully receive the notification message, resend the message until all devices confirm receipt.

[0182] Establish a shared database or logging system and update it regularly:

[0183] Establish a shared database for storing and updating the frequency band setting information of each device. Regularly check and update the information in the shared database to reflect any new optimization adjustment results.

[0184] After each frequency band adjustment, update the corresponding entry in the shared database and notify nearby devices to synchronously update their internal records. For example, after the optimized frequency band is set to 5190 MHz to 5200 MHz, update the records in the shared database and notify all devices to synchronously update their internal frequency band settings.

[0185] Through the above steps, the present invention can record the finally optimized frequency band setting information and share the setting information with nearby devices, reduce future interference, and ensure the continuous optimization of network performance. The methods in each step ensure the accuracy and consistency of the frequency band setting information, thus providing users with a more stable and high-quality wireless connection experience.

[0186] On the other hand, the present invention proposes a frequency band control system for a WIFI antenna, as Figure 2 shown, including:

[0187] A signal strength detection and interference analysis module for detecting the signal strength of the current channel and analyzing the interference degree of adjacent channels based on the detection results;

[0188] A target frequency band determination module for determining the target frequency band to be adjusted according to the interference degree;

[0189] A synchronous adjustment and frequency band switching module for, after selecting the target frequency band, notifying nearby devices to perform synchronous adjustment, and then gradually changing the currently used frequency band to the target frequency band, and monitoring the signal quality in real time as the frequency band changes;

[0190] A feedback adjustment and optimization module for, once it is found that the signal quality does not reach the expected improvement, adjusting to a new target frequency band according to the feedback and repeating the adjustment until the signal quality improves;

[0191] A shared setting information module for recording the setting information of the final frequency band and sharing the setting information with nearby devices to reduce future interference.

[0192] In addition, when the above-mentioned modules are executed, they are also used to implement other steps of the above-mentioned frequency band control method for a WIFI antenna, which will not be elaborated one by one here.

[0193] In summary, by monitoring the signal strength of the current channel in real time and analyzing the interference degree of adjacent channels, the present invention can respond to environmental changes immediately and ensure effective processing of sudden interference. This method dynamically determines the target frequency band according to the interference degree and gradually and smoothly performs frequency band switching, avoiding the instability problem caused by frequent switching in the traditional method.

[0194] In addition, by notifying nearby devices to synchronously adjust and sharing the finally optimized frequency band setting information, future possible interference is reduced, the overall network stability and performance are significantly improved, and a more stable and high-quality wireless connection experience is provided for users. This improvement not only improves the accuracy and efficiency of frequency band adjustment, but also enhances the anti-interference ability of the network.

[0195] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A frequency band control method for a WIFI antenna, characterized in that: The following steps are involved: Detect the signal strength of the current channel and analyze the interference level of adjacent channels based on the detection results; Determining a target frequency band to be adjusted according to the interference level; After selecting the target frequency band, notify nearby devices to make synchronous adjustments, and then gradually change the currently used frequency band to the target frequency band, specifically including: determining the step size of the frequency band switching, which is calculated based on the frequency difference between the current frequency band and the target frequency band; adjusting the current frequency band to a new temporary frequency band according to the calculated step size, recording the frequency band value after each adjustment, and updating the device status; monitoring the signal quality after each frequency band adjustment step, and comparing it with the signal quality of the previous frequency band adjustment step; if it is found that the signal quality has dropped significantly, suspend further adjustments, and re-evaluate whether the current frequency band setting needs fine-tuning; after completing all the predetermined frequency band adjustment steps, confirm whether the final frequency band reaches the target frequency band; if it has not yet completely reached the target frequency band, adjust the step size according to the remaining frequency difference and continue to adjust until it completely matches the target frequency band; As the frequency band changes, the signal quality is monitored in real time, specifically including: setting the initial frequency band adjustment step length, which is calculated based on the frequency difference between the current frequency band and the target frequency band; adjusting the current frequency band according to the set step length, and measuring the signal quality immediately after each adjustment, comparing the newly measured signal quality with the previous measurement result, and calculating the signal quality change rate; dynamically adjusting the next frequency band adjustment step length according to the signal quality change rate, if the signal quality drops significantly, reducing the step length to control the frequency band adjustment, if the signal quality is stable or improved, keeping the current step length unchanged; after completing all the predetermined frequency band adjustment steps, confirming whether the final frequency band reaches the target frequency band; if it has not yet completely reached the target frequency band, adjusting the step length again according to the remaining frequency difference and the latest signal quality change rate and continuing to adjust until it completely matches the target frequency band; If it is found that the signal quality has not improved as expected, adjust to a new target frequency band based on the feedback, and repeat the adjustment until the signal quality improves; Record the final frequency band setting information and share the setting information with nearby devices to reduce future interference, including: determining the final optimized frequency band setting, recording all relevant parameters of this frequency band setting, including frequency range, signal strength and switching time point; generating a notification message containing the optimized frequency band information, the notification message is used to notify nearby devices to make synchronous adjustments; sending notification messages to nearby devices through the network broadcast mechanism, and recording the reception status of each device.

2. A WIFI antenna frequency band control method according to claim 1, characterized in that: The detecting the signal strength of the current channel includes: Calculate channel utilization and determine if there is significant interference based on the ratio of total observation time to busy time; Measure the background noise level of adjacent channels and record it; if the background noise level is higher than the preset safety limit, adjust the detection frequency to monitor the channel status; Update the channel quality assessment parameters based on the latest collected data, and determine whether the channel condition has improved or deteriorated by comparing the changes in the new and old channel quality parameter values; Adjust the operation strategy according to the changing trend of channel quality. If a deterioration trend is found, prepare a frequency band switching plan in advance to minimize the impact of potential interference on users.

3. A WIFI antenna frequency band control method according to claim 2, characterized in that: The step of analyzing the interference degree of adjacent channels based on the detection result includes: Determine the signal strength reference value of the current channel; Measure the signal strength of adjacent channels, compare it with the reference value, and calculate the difference; Determine whether there is significant interference in the adjacent channel based on the difference; if the difference exceeds a preset threshold, it is considered that there is significant interference and the level of interference is recorded; Calculate the frequency band offset that needs to be adjusted according to the interference level, and prepare to adjust the frequency band according to the calculated offset; Evaluate the impact of frequency band adjustment on the current network connection, and predict possible performance improvement or degradation by simulating the changing trend of signal quality under new channel conditions. Decide whether to perform frequency band adjustment based on the prediction results to ensure that channel selection is optimized without negatively affecting network performance.

4. The method for controlling the frequency band of a WIFI antenna according to claim 3, characterized in that: The determining the target frequency band to be adjusted according to the interference degree includes: According to the interference level, an initial target frequency band offset is defined; Calculate the frequency interval between the current channel and the adjacent channel, and select several candidate frequency bands based on the interval; Evaluate the potential interference level of each candidate frequency band and select the candidate frequency band with the lowest interference level as the final target frequency band; Confirm whether the selected target frequency band meets the safety and performance standards set by the system; if not, re-evaluate the remaining candidate frequency bands and select the second best option; once a qualified target frequency band is found, record its parameters.

5. A WIFI antenna frequency band control method according to claim 4, characterized in that: After selecting the target frequency band, notifying nearby devices to perform synchronous adjustment includes: Generate a notification message containing new frequency band information, the notification message includes the frequency range and switching time point of the target frequency band; Send notification messages to nearby devices via network broadcast mechanism; Monitor the response status of nearby devices and determine whether each device is ready to switch bands based on the received confirmation information; if a device is not ready, delay its switching time point; When all devices are ready, the frequency band switching operation is performed according to the predetermined switching time point; after the switching is completed, the new signal quality data of each device is collected and compared with the previous signal quality data to evaluate the switching effect.

6. A WIFI antenna frequency band control method according to claim 5, characterized in that: Once it is found that the signal quality has not improved as expected, the new target frequency band is adjusted according to the feedback, and the adjustment is repeated until the signal quality is improved, including: Set a signal quality threshold to evaluate whether the signal quality in the current frequency band meets the expected standard. If the signal quality obtained by real-time monitoring is lower than the threshold, the frequency band adjustment process is triggered. Calculate a new target frequency band based on the current frequency band and signal quality data; Perform frequency band switching operations according to the new target frequency band and measure the new signal quality immediately after each switch; Dynamically adjust subsequent frequency band change strategies based on historical adjustment results.

7. The method for controlling a frequency band of a WIFI antenna according to claim 1, characterized in that: The recording of the final frequency band setting information and sharing the setting information with nearby devices to reduce future interference also includes: Establish a shared database to store and update the frequency band setting information of each device; regularly check and update the information in the shared database to reflect any new optimization adjustment results; after each frequency band adjustment, update the corresponding entry in the shared database and notify nearby devices to synchronously update their internal records.

8. A WIFI antenna frequency band control system for implementing the method according to any one of claims 1 to 7, characterized in that: include: The signal strength detection and interference analysis module is used to detect the signal strength of the current channel and analyze the interference degree of adjacent channels based on the detection results; A target frequency band determination module, used to determine the target frequency band that needs to be adjusted according to the interference level; A synchronous adjustment and frequency band switching module is used to notify nearby devices to perform synchronous adjustment after selecting the target frequency band, and then gradually change the currently used frequency band to the target frequency band, and monitor the signal quality in real time as the frequency band changes; Feedback adjustment and optimization module, used to adjust to a new target frequency band based on feedback if the signal quality does not reach the expected improvement, and repeat the adjustment until the signal quality improves; The shared setting information module is used to record the final frequency band setting information and share the setting information with nearby devices to reduce future interference.

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