Frequency band control system and control method for WIFI antenna

Abstract

The invention belongs to the technical field of antennas, and particularly relates to a frequency band control system and a frequency band control method for a WIFI (Wireless Fidelity) antenna, which can respond to environmental changes in real time and ensure effective processing of burst interference by monitoring the signal strength of a current channel in real time and analyzing the interference degree of adjacent channels. According to the method, the target frequency band is dynamically determined according to the interference degree, frequency band switching is gradually and smoothly carried out, and the problem of instability caused by frequent switching in a traditional method is avoided. Besides, by notifying nearby equipment to perform synchronous adjustment and sharing the final optimized frequency band setting information, possible interference in the future is reduced, the stability and performance of the whole network are remarkably improved, and more stable and high-quality wireless connection experience is provided for users. The improvement not only improves the precision and efficiency of frequency band adjustment, but also enhances the anti-interference capability of the network.

Description

Technical Field

[0001] The present invention belongs to the technical field of antennas, and in particular 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 used 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 cannot effectively deal with the problem of adjacent channel interference in complex and changeable wireless environments. Semi-dynamic frequency band management reduces interference by periodically scanning and adjusting frequency bands, but its response speed is slow and lacks sensitivity to real-time signal quality changes.

[0003] Specifically, the prior art generally includes the following steps: Initial frequency band selection: Select an initial frequency band based on historical data or default settings. Periodic scan: Regularly scan the signal strength and interference of the current channel. Frequency band adjustment: If significant interference is detected, manually or automatically switch to another preset backup frequency band. Notify neighboring devices: After the frequency band is adjusted, notify nearby devices through the broadcast mechanism to synchronize the adjustment.

[0004] Although these methods can alleviate the interference problem to a certain extent, they have the following shortcomings: Response lag: Due to periodic scanning, it is impossible to respond to sudden interference events in real time. Imprecise adjustment: The adjustment process is relatively rough, which may lead to frequent frequency band switching and affect user experience. Lack of coordination: The frequency band adjustment between adjacent devices lacks coordination, which easily leads to the emergence of new interference sources.

[0005] The main problem of the above-mentioned existing technologies is that they cannot deal with the signal quality degradation caused by adjacent channel interference in real time and accurately. Especially in high-density wireless environments, the interference between channels changes rapidly and complexly. Traditional frequency band control methods are difficult to quickly adapt to and effectively handle these interferences, resulting in network performance degradation. Summary of the invention

[0006] The purpose of the present invention is to provide a frequency band control system and control method for a WIFI antenna, which not only improves the accuracy and efficiency of frequency band adjustment, but also enhances 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-mentioned background technology.

[0007] To achieve the above object, the present invention provides a method for controlling a frequency band of a WIFI antenna, comprising the following steps: 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, 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; 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; The final frequency band setting information is recorded and shared with nearby devices to reduce future interference.

[0008] Preferably, 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.

[0009] Preferably, 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.

[0010] Preferably, determining the target frequency band to be adjusted according to the interference level 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.

[0011] Preferably, 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.

[0012] Preferably, the step of gradually changing the currently used frequency band to the target frequency band includes: Determine 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; According to the calculated step length, adjust the current frequency band to the new temporary frequency band, record the frequency band value after each adjustment, and update the device status; 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 the signal quality is found to be significantly reduced, suspend further adjustments and re-evaluate whether the current frequency band settings need 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 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.

[0013] Preferably, the real-time monitoring of signal quality as the frequency band changes includes: Set the initial frequency band adjustment step, which is calculated based on the frequency difference between the current frequency band and the target frequency band; Adjust the current frequency band according to the set step size, measure the signal quality immediately after each adjustment, compare the newly measured signal quality with the previous measurement result, and calculate the signal quality change rate; Dynamically adjust the frequency band adjustment step size for the next step according to the signal quality change rate. If the signal quality drops significantly, reduce the step size to control the frequency band adjustment. If the signal quality is stable or improved, keep the current step size unchanged. 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 again according to the remaining frequency difference and the latest signal quality change rate and continue to adjust until it completely matches the target frequency band.

[0014] Preferably, once it is found that the signal quality has not been improved as expected, adjusting to a new target frequency band according to feedback, and repeating the adjustment until the signal quality is improved, includes: 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 switching; Dynamically adjust subsequent frequency band change strategies based on historical adjustment results.

[0015] Preferably, recording the final frequency band setting information and sharing the setting information with nearby devices to reduce future interference includes: Determine the final optimized frequency band setting and record all relevant parameters of this frequency band setting, including frequency range, signal strength and switching time point; Generate a notification message containing optimized frequency band information, which is used to notify nearby devices to make synchronous adjustments; Send notification messages to nearby devices through the network broadcast mechanism and record the reception status of each device; 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.

[0016] On the other hand, the present invention provides a frequency band control system for a WIFI antenna, comprising: 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 a 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.

[0017] Technical effects and advantages of the present invention: Compared with the prior art, the frequency band control system and control method for a WIFI antenna proposed in the present invention have the following advantages: The present invention can respond to environmental changes immediately and ensure effective handling of sudden interference by monitoring the signal strength of the current channel in real time and analyzing the interference level of adjacent channels. The method dynamically determines the target frequency band based on the interference level, and gradually and smoothly switches the frequency band, avoiding the instability problem caused by frequent switching in traditional methods. In addition, by notifying nearby devices to adjust synchronously and sharing the final optimized frequency band setting information, possible interference in the future is reduced, the stability and performance of the overall network are significantly improved, and users are provided 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 network's anti-interference ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a flow chart of the frequency band control method for WIFI antenna of the present invention; Figure 2 It is a block diagram of the frequency band control system for the WIFI antenna of the present invention. DETAILED DESCRIPTION

[0019] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] The present invention provides Figure 1 A frequency band control method for a WIFI antenna is shown, comprising the following steps: Step 1: Detect the signal strength of the current channel and analyze the interference level of adjacent channels based on the detection results; Further, after detecting the signal strength of the current channel, the following steps are included: First, calculate the channel utilization , where Tb represents the busy time and Ta represents the total observation time; whether there is significant interference is determined based on the channel utilization; if the utilization exceeds the set threshold, the next step of analysis is entered; this provides basic data support for subsequent frequency band adjustments.

[0021] Next, measure the background noise level BgN of the adjacent channels and record it. Combined with 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 adjacent channels can help evaluate potential interference sources and decide whether to increase the monitoring frequency based on the results to detect and deal with interference problems more promptly.

[0022] Then, the channel quality assessment parameter Pc is updated based on the latest collected data, using the formula Pc=Ss-BgN, where Ss represents the signal strength; by comparing the changes in the new and old channel quality parameter values, it is determined whether the channel condition has improved or deteriorated; by updating the channel quality assessment parameters, the quality status of the current channel can be quantified and compared with historical data to determine the changing trend of the channel condition.

[0023] Finally, adjust the subsequent 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. 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.

[0024] In a specific embodiment, assuming that a WiFi network is being managed: Calculate channel utilization: In a 60-second monitoring cycle, the channel busy time is 30 seconds, and the channel utilization is calculated Since the threshold was set at 40%, it was confirmed that there was significant interference and the next step of analysis was performed.

[0025] Measuring background noise level: The background noise level of the adjacent channel was measured to be -80dBm, while the preset safety limit was -75dBm. Since the background noise level was higher than the safety limit, the system decided to increase the detection frequency to monitor the channel status more frequently.

[0026] Update channel quality assessment parameters: The current signal strength is -60dBm, the background noise level is -80dBm, and the calculated channel quality assessment parameter Pc = (-60) - (-80) = 20dB. By comparing the changes in the new and old channel quality parameter values, it is found that the channel condition has deteriorated.

[0027] Adjust the operation strategy: Based on the trend of channel quality changes, 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.

[0028] Through the above steps, the present invention can deal with the problem of signal quality degradation caused by adjacent channel interference in real time and accurately, and improve the stability and performance of the overall network.

[0029] Further, when analyzing the interference degree of the adjacent channels based on the detection result, the following steps are included: 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, and 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, ensuring that there is a clear standard when comparing measurement results.

[0030] Then, determine whether there is significant interference in the adjacent channel based on the difference Dif; if Dif exceeds the preset threshold, it is considered that there is significant interference, and the interference level Ig=Dif / Th is recorded, where Th is the set interference threshold; by measuring the signal strength of the adjacent channel and comparing it with the baseline value, the degree of interference of the adjacent channel on the current channel can be quantified to help determine whether there is significant interference.

[0031] Next, calculate the frequency band offset Fo that needs to be adjusted based on the interference level Ig, using the formula , where K is a constant coefficient used to convert the interference level into an actual frequency band offset; prepare to adjust the frequency band based on the calculated offset; determine whether there is significant interference in the adjacent channels based on the signal strength difference, and record the interference level to provide a basis for subsequent frequency band adjustments.

[0032] Finally, evaluate the impact of frequency band adjustment on the current network connection, and predict possible performance improvement or degradation by simulating the changing trend Tq 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; calculate the frequency band offset that needs to be adjusted based on the interference level, and provide specific numerical guidance for frequency band adjustment to ensure that the adjustment process is accurate and effective. By simulating the changing trend of signal quality under new channel conditions, predict the performance improvement or degradation that may be brought about by frequency band adjustment, and ensure that channel selection is optimized without negatively affecting network performance.

[0033] In a specific embodiment, assuming that a WiFi network is being managed: Determine the signal strength reference value of the current channel: In an initial state, the signal strength of the current channel is measured to be -65dBm, and Sb is set to -65dBm.

[0034] Measure the signal strength of the adjacent channel and calculate the difference: Assuming that the measured signal strength of the adjacent channel is -60dBm, the signal strength difference Dif = (-60) - (-65) = 5dB. If the preset threshold is 3dB, it is considered that there is significant interference.

[0035] Determine whether there is significant interference in the adjacent channel and record the interference level: Assuming the signal strength difference Dif = 5dB, the interference threshold Th = 3dB, then the interference level Ig = 5 / 3 ≈ 1.67. Record the interference level for subsequent use.

[0036] Calculate the frequency band offset that needs to be adjusted: Assuming the interference level Ig = 1.67, the constant coefficient K = 2MHz / unit interference level, then the frequency band offset Based on the calculated offset, prepare to perform frequency band adjustment.

[0037] Evaluate the impact of frequency band adjustment on network connection: Assuming that under the new channel conditions, the simulated signal quality change trend Tq shows that the signal strength increases from -65dBm to -62dBm, indicating that the signal quality has improved. Therefore, it is decided to perform frequency band adjustment and notify nearby devices to adjust synchronously.

[0038] Step 2: Determine the target frequency band to be adjusted according to the interference level; specifically, the following steps are included: First, according to the interference level Ig calculated in the previous step, an initial target frequency band offset Fo_initial is defined; if the interference level is high, a larger offset is set to ensure a significant improvement in signal quality; otherwise, a smaller offset is set; Next, the frequency interval FreqGap between the current channel and the adjacent channel is calculated, and several candidate frequency bands are selected based on this interval; the selection criteria are: the frequency interval of each candidate frequency band must satisfy FreqGap_new>FreqGap, where FreqGap_new is the frequency interval between the new frequency band and the nearest adjacent channel; by calculating the frequency interval between the current channel and the adjacent channel, and selecting several candidate frequency bands based on this interval, it is ensured that the newly selected frequency band can provide better isolation and reduce potential interference.

[0039] Then, the potential interference level Ip of each candidate frequency band is evaluated by 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; Finally, 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 and prepare to notify related equipment 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 is stable and efficient after the frequency band adjustment.

[0040] In a specific embodiment, assuming that a WiFi network is being managed: Define the initial target frequency band offset: The calculated interference level Ig = 1.67. Due to the high interference level, set a larger initial frequency band offset Fo_initial = 4MHz.

[0041] Calculate the frequency gap and select candidate frequency bands: The frequency gap between the current channel and the adjacent channel is FreqGap = 20MHz. When selecting a new frequency band, ensure that the frequency gap between the new frequency band and the nearest adjacent channel, FreqGap_new, is greater than 20MHz. For example, select a new frequency band so that the frequency gap between it and the nearest adjacent channel is 30MHz.

[0042] Evaluate the potential interference level of the candidate frequency band: Assuming the interference level Ig = 1.67, the frequency gap between the current channel and the adjacent channel FreqGap = 20MHz, and the frequency gap between the new frequency band and the nearest adjacent channel FreqGap_new = 30MHz, the potential interference level The candidate frequency band with the lowest interference level is selected as the final target frequency band.

[0043] Confirm that the target frequency band meets the safety and performance standards: Assume that the selected target frequency band is a new frequency band with a frequency interval of 30MHz. After evaluation, it is found that its potential interference level Ip=1.11. If the frequency band meets the safety and performance standards set by the system, its parameters are recorded and relevant equipment is prepared to be notified for synchronization adjustment. If it does not meet the standards, the remaining candidate frequency bands are re-evaluated and the second best option is selected.

[0044] Through the above steps, the present invention can accurately determine the target frequency band that needs to be adjusted, thereby ensuring that channel selection is optimized without negatively affecting network performance.

[0045] Step 3: 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, and monitor the signal quality in real time as the frequency band changes; Furthermore, after selecting the target frequency band, notifying the nearby devices to perform synchronous adjustment includes the following steps: First, a notification message Msg containing new frequency band information is generated; the message contains the frequency range of the target frequency band and the switching time point Ts; ensure that all relevant information is complete and accurate so that nearby devices can correctly parse and execute; Next, the notification message Msg is sent to nearby devices through the network broadcast mechanism; the broadcast protocol is used to ensure that the message can cover all relevant connected devices, and the sending status SendSt is recorded; if the sending fails or the receipt is not confirmed, it is resent until it succeeds; Then, monitor the response status RespSt of nearby devices and determine whether each device is ready for band switching based on the received confirmation information; if a device is not ready, delay its switching time point Td=Ts+Δt, where Δt is the additional waiting time to ensure that all devices can transition smoothly; Finally, when all devices are ready, the frequency band switching operation is performed according to the predetermined switching time point Ts; after the switching is completed, the new signal quality data NewQ of each device is collected and compared with the previous signal quality data OldQ to evaluate the switching effect; In a specific embodiment, assuming that a WiFi network is being managed: Generate a notification message containing new frequency band information: Assume that the frequency range of the target frequency band is 5180 MHz to 5200 MHz, and the switching time point Ts=14:30:00.

[0046] The generated notification message Msg contains this information and ensures that all relevant information is complete and accurate.

[0047] Send notification messages via network broadcast mechanism: Use the broadcast protocol to send the notification message Msg to nearby devices and record the sending status SendSt.

[0048] If a device fails to successfully receive the notification message, the message is resent until all devices confirm receipt.

[0049] Monitor the response status of nearby devices: Monitor the response status RespSt of nearby devices and determine whether each device is ready for frequency band switching based on the received confirmation information.

[0050] Assume that during the monitoring process, it is found that a device is not ready for frequency band switching. The current switching time point 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.

[0051] Perform a band switch and evaluate the switching effect: When all devices are ready, the frequency band switching operation is performed according to the scheduled switching time point Ts=14:30:00.

[0052] After the switch is completed, collect the new signal quality data NewQ of each device and compare it with the previous signal quality data OldQ. Assume that the new signal quality data NewQ shows a signal strength of -62dBm, while the old signal quality data OldQ shows a signal strength of -65dBm. By comparing, the performance improvement after the frequency band switch can be evaluated.

[0053] Through the above steps, the present invention can ensure that after the target frequency band is selected, the nearby devices are notified to perform synchronous adjustment, and the switching effect is evaluated after the switching is completed.

[0054] Furthermore, when gradually changing the currently used frequency band to the target frequency band, the following steps are included: First, determine the step length StepLen of the frequency band switching, which 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 that the frequency band adjustment process is smooth. Next, according to the calculated step length StepLen, the current frequency band is adjusted to the new temporary frequency band TempFreq; the frequency band value after each adjustment is recorded, and the device status DevSt is updated to ensure that all related devices can synchronously track the frequency band changes; Then, the signal quality SigQual after each frequency band adjustment step is monitored and compared with the signal quality PrevSigQual of the previous frequency band adjustment step; if it is found that the signal quality has significantly decreased, further adjustments are suspended and the current frequency band setting is re-evaluated to see whether it needs fine-tuning; 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 yet completely reached the target frequency band, adjust the step length StepLen according to the remaining frequency difference RemFreqDiff = target frequency band - current frequency band and continue to adjust until it completely matches the target frequency band; In a specific embodiment, assuming that the current frequency band of 5180 MHz is gradually adjusted to the target frequency band of 5200 MHz: Calculation step size: frequency difference FreqDiff=20MHz, preset switching step number N=4, step size StepLen=20MHz / 4=5MHz.

[0055] Adjust the frequency band gradually: First adjustment: TempFreq=5180MHz+5MHz=5185MHz.

[0056] Second adjustment: TempFreq=5185MHz+5MHz=5190MHz.

[0057] The third adjustment: TempFreq=5190MHz+5MHz=5195MHz.

[0058] Monitoring signal quality: Monitor the signal quality after each adjustment, assuming that after the first adjustment SigQual = -62dBm, after the second adjustment SigQual = -63dBm, and after the third adjustment SigQual = -64dBm. If the signal quality is found to be significantly degraded, suspend the adjustment and re-evaluate.

[0059] Confirm the final frequency band: Final adjustment: RemFreqDiff = 5200MHz - 5195MHz = 5MHz, continue to adjust the step size StepLen = 5MHz, and adjust the frequency band to the target frequency band of 5200MHz.

[0060] Through the above steps, the present invention can ensure that the frequency band adjustment process is carried out smoothly, and monitor the signal quality in real time to ensure that the network performance is not negatively affected, thereby providing users with a more stable and high-quality wireless connection experience.

[0061] 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: First, set the initial frequency band adjustment step length 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; Next, adjust the current frequency band according to the set step length InitStepLen, and measure the signal quality CurSigQual immediately 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; Then, the next frequency band adjustment step NextStepLen is dynamically adjusted according to the signal quality change rate QualChangeRate; if the signal quality drops significantly (i.e. QualChangeRate<0), the step size is reduced to more finely control the frequency band adjustment, the formula is NextStepLen=InitStepLen / 2; if the signal quality is stable or improved, the current step size is kept unchanged; 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 yet completely reached the target frequency band, adjust the step size 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 completely matches the target frequency band; In a specific embodiment, assuming that the current frequency band of 5180 MHz is gradually adjusted to the target frequency band of 5200 MHz: Set the initial step size: frequency difference FreqDiff = 20MHz, preset switching step number N = 4, initial step size InitStepLen = 20MHz / 4 = 5MHz.

[0062] Step through the frequency bands and measure the signal quality: The first adjustment: TempFreq=5180MHz+5MHz=5185MHz, signal quality CurSigQual=-62dBm, previous signal quality PrevSigQual=-65dBm, time interval Δt=1 minute, signal quality change rate QualChangeRate=3dB / min.

[0063] The second adjustment: TempFreq=5185MHz+5MHz=5190MHz, signal quality CurSigQual=-63dBm, previous signal quality PrevSigQual=-62dBm, time interval Δt=1 minute, signal quality change rate QualChangeRate=-1dB / min.

[0064] Dynamically adjust the step size: Since the signal quality decreases significantly after the second adjustment (QualChangeRate<0), the step size is reduced to NextStepLen=InitStepLen / 2=2.5MHz.

[0065] Confirm the final frequency band: Final adjustment: Remaining frequency difference RemFreqDiff = 5200MHz - 5195MHz = 5MHz, continue to adjust the step size NextStepLen = 2.5MHz, and adjust the frequency band to the target frequency band 5200MHz.

[0066] Through the above steps, the present invention can ensure that the frequency band adjustment process is carried out smoothly, 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 provide users with a more stable and high-quality wireless connection experience.

[0067] Step 4: 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; specifically, the following steps are included: First, a signal quality threshold QualThreshold is set to evaluate whether the signal quality in the current frequency band meets the expected standard; if the signal quality CurSigQual obtained by real-time monitoring is lower than the threshold, the frequency band adjustment process is triggered; Next, based on the current frequency band and signal quality data, a new target frequency band NewTargetFreq is calculated; the formula is NewTargetFreq=CurFreq+AdjustFreqOffset, where AdjustFreqOffset is the frequency offset adjusted based on the signal quality difference QualDiff=QualThreshold-CurSigQual, ensuring that the new target frequency band can significantly improve the signal quality; Then, the frequency band switching operation is performed according to the new target frequency band NewTargetFreq, and the new signal quality UpdatedSigQual is measured immediately after each switching; the new and old signal qualities are compared, and if UpdatedSigQual still does not reach QualThreshold, the current status is recorded and the next adjustment is performed; Finally, dynamically adjust the subsequent frequency band change strategy based on the historical adjustment results; if the signal quality after several consecutive adjustments fails to meet expectations, reduce the frequency band adjustment step 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; In a specific embodiment, it is assumed that the current frequency band of 5180 MHz is gradually adjusted to the target frequency band to improve the signal quality: Set the signal quality threshold: signal quality threshold QualThreshold = -60dBm. The current signal quality CurSigQual = -65dBm (lower than the threshold), triggering the frequency band adjustment process.

[0068] Calculate the new target frequency band: The current frequency band CurFreq = 5180MHz, and the signal quality difference QualDiff = 5dB. Assuming the frequency offset AdjustFreqOffset = 10MHz, the new target frequency band NewTargetFreq = 5180MHz + 10MHz = 5190MHz.

[0069] Perform frequency switching according to the new target frequency band and measure the new signal quality: After adjusting to 5190MHz, the measured updated signal quality UpdatedSigQual = -62dBm. Since it does not meet the expected standard, the current status is recorded and the next adjustment is prepared.

[0070] Dynamically adjust subsequent frequency band change strategies: If the signal quality after two consecutive adjustments still does not meet the expected standard (for example, the signal quality after the second adjustment is UpdatedSigQual=-63dBm), reduce the frequency band adjustment step NextStepLen=5MHz and continue to adjust until the signal quality steadily improves and exceeds QualThreshold=-60dBm.

[0071] Through the above steps, the present invention can dynamically adjust the frequency band according to the signal quality situation monitored in real time, thereby ensuring the continuous optimization of network performance.

[0072] Step 5: Record the final frequency band setting information and share the setting information with nearby devices to reduce future interference; specifically including the following steps: First, determine the final optimized frequency band setting OptimizedFreq, which is the best frequency band to achieve stable signal quality after multiple adjustments; record all relevant parameters of this frequency band setting, including frequency range, signal strength, and switching time point; Next, a notification message OptMsg containing the optimized frequency band information is generated, ensuring that the message contains all necessary details, such as OptimizedFreq and related performance indicators; this message will be used to notify nearby devices to make synchronous adjustments; Then, the notification message OptMsg is sent to nearby devices through the network broadcast mechanism, and the receiving status RecvSt of each device is recorded; if a device fails to successfully receive the notification message, it is resent until it is confirmed to be received successfully; this step ensures that all nearby devices can obtain the latest frequency band setting information; Finally, establish a shared database or log system 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; (Note: the shared database is used to record the frequency band settings) After each frequency band adjustment, update the corresponding entry in the shared database and notify nearby devices to synchronize and update their internal records; In a specific embodiment, assuming that a WiFi network is being managed: Determine the final optimized frequency band settings and record the relevant parameters: Assume that after multiple adjustments, the final optimized frequency band setting OptimizedFreq is 5190MHz to 5200MHz, the signal strength is -60dBm, and the switching time is 14:30:00. Record these parameters for later use.

[0073] Generate a notification message containing optimized frequency band information: The generated notification message OptMsg contains the following information: Frequency band range: 5190MHz to 5200MHz; Signal strength: -60dBm; Switching time: 14:30:00; Send notification messages through the network broadcast mechanism and record the receiving status: The notification message OptMsg is sent to nearby devices using the broadcast protocol, and the receiving status RecvSt of each device is recorded. If a device fails to successfully receive the notification message, the message is resent until all devices confirm receipt.

[0074] Establish a shared database or logging system and update it regularly: 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.

[0075] After each frequency band adjustment, the corresponding entry in the shared database is updated, and nearby devices are notified to synchronously update their internal records. For example, after the optimized frequency band is set to 5190MHz to 5200MHz, the record in the shared database is updated, and all devices are notified to synchronously update their internal frequency band settings.

[0076] Through the above steps, the present invention can record the final optimized frequency band setting information and share the setting information with nearby devices to reduce future interference and ensure continuous optimization of network performance. The method in each step ensures the accuracy and consistency of the frequency band setting information, thereby providing users with a more stable and high-quality wireless connection experience.

[0077] On the other hand, the present invention provides a frequency band control system for a WIFI antenna, such as Figure 2 As shown, including: 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 a 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.

[0078] In addition, the above modules are also used to implement other steps of the above-mentioned method for controlling a frequency band for a WIFI antenna when executed, which will not be described one by one here.

[0079] In summary, the present invention can respond to environmental changes in real time by monitoring the signal strength of the current channel in real time and analyzing the interference level of adjacent channels, ensuring effective handling of sudden interference. The method dynamically determines the target frequency band according to the interference level and gradually and smoothly switches the frequency band, avoiding the instability problem caused by frequent switching in traditional methods.

[0080] In addition, by notifying nearby devices to adjust synchronously and sharing the final optimized frequency band setting information, possible interference in the future is reduced, the stability and performance of the overall network are significantly improved, and users are provided 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 network's anti-interference ability.

[0081] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should 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, and monitor the signal quality in real time as the frequency band changes; 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; The final frequency band setting information is recorded and shared with nearby devices to reduce future interference.

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: The step of gradually changing the currently used frequency band to the target frequency band includes: Determine 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; According to the calculated step length, adjust the current frequency band to the new temporary frequency band, record the frequency band value after each adjustment, and update the device status; 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 the signal quality is found to be significantly reduced, suspend further adjustments and re-evaluate whether the current frequency band settings need 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 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.

7. A WIFI antenna frequency band control method according to claim 6, characterized in that: The real-time monitoring of signal quality as the frequency band changes includes: Set the initial frequency band adjustment step size, which is calculated based on the frequency difference between the current frequency band and the target frequency band; Adjust the current frequency band according to the set step size, measure the signal quality immediately after each adjustment, compare the newly measured signal quality with the previous measurement result, and calculate the signal quality change rate; Dynamically adjust the frequency band adjustment step size for the next step according to the signal quality change rate. If the signal quality drops significantly, reduce the step size to control the frequency band adjustment. If the signal quality is stable or improved, keep the current step size unchanged. 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 again according to the remaining frequency difference and the latest signal quality change rate and continue to adjust until it completely matches the target frequency band.

8. A WIFI antenna frequency band control method according to claim 7, 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.

9. A WIFI antenna frequency band control method according to claim 8, characterized in that: The recording of the final frequency band setting information and sharing the setting information with nearby devices to reduce future interference includes: Determine the final optimized frequency band setting and record all relevant parameters of this frequency band setting, including frequency range, signal strength and switching time point; Generate a notification message containing optimized frequency band information, which is used to notify nearby devices to make synchronous adjustments; Send notification messages to nearby devices through the network broadcast mechanism and record the reception status of each device; 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.

10. A frequency band control system for a WIFI antenna for implementing the method according to any one of claims 1 to 9, 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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