Adaptive radio frequency tuning method, device and system and storage medium

Abstract

The invention discloses a self-adaptive radio frequency tuning method and system and a storage medium, and relates to the technical field of wireless networks, the method comprises the following steps: when an access controller detects that preset tuning time is up, access point parameters corresponding to each wireless access point are obtained, the access point parameters comprise an inner ring threshold value, a current power value and a maximum power value, and the preset tuning time is not up; the method comprises the following steps: acquiring a wireless access point, searching for adjacent access points corresponding to the wireless access point, determining a maximum interference value and a minimum interference value of radio frequency interference generated by the wireless access point on each adjacent access point, and when the maximum interference value is judged to be greater than a preset threshold value, determining that the wireless access point generates the radio frequency interference on each adjacent access point based on a size relationship between the minimum interference value and an inner ring threshold value. And adjusting the transmitting power of the wireless access point according to the current power value and the magnitude relationship between the current power value and the maximum power value. According to the invention, the transmitting power of the wireless access point is effectively adjusted through radio frequency tuning, so that the wireless access point achieves the balance between signal coverage and interference avoidance.

Description

Technical Field

[0001] The present invention relates to the field of wireless network technology, and in particular to an adaptive radio frequency tuning method, device, system and storage medium. Background Art

[0002] AP (Access Point) is the access point of a wireless network. It serves as the center point of a WLAN (Wireless Local Area Networks) for other devices equipped with wireless network cards to access the WLAN.

[0003] At present, with the rapid increase in the number of network users, the problem of wireless resource shortage is becoming more and more prominent, especially in places where a large number of users are concentrated. Therefore, in order to meet the wireless network access needs of a large number of users, a large number of APs need to be deployed. However, it is inevitable that a large number of APs will be easily confused if they are managed separately, so a centralized network architecture based on AC (Access Controller) came into being. An AC can connect multiple APs, up to 1024, to aggregate data from different APs and access the network, and at the same time complete AP parameter adjustment, wireless user authentication, management, broadband access, security and other control functions.

[0004] Among them, AC adjusts the parameters of AP, including adjusting the power of AP through radio frequency tuning. When the AP power needs to be increased to enhance signal coverage, the AP's transmit power is adjusted to the maximum value; and when the AP power needs to be reduced to reduce radio frequency coverage, the AP's transmit power is adjusted to the minimum value. However, the maximum transmit power of AP will cause radio frequency interference between APs, and the minimum transmit power of AP cannot guarantee the signal coverage between APs. Therefore, how to effectively adjust the transmit power of AP through radio frequency tuning so that AP can achieve a balance between signal coverage and interference avoidance is one of the technical problems that need to be solved at present. Summary of the invention

[0005] The main purpose of the present invention is to provide an adaptive radio frequency tuning method, device, system and medium, aiming to solve the technical problem in the prior art of how to effectively adjust the transmit power of an AP through radio frequency tuning so that the AP can achieve a balance between signal coverage and interference avoidance.

[0006] To achieve the above object, the present invention provides an adaptive radio frequency tuning method, which is applied to an access controller in a wireless local area network, wherein the access controller is communicatively connected with a plurality of wireless access points, and the adaptive radio frequency tuning method comprises:

[0007] When the access controller detects that a preset tuning time for performing radio frequency tuning on each of the wireless access points has arrived, the following steps are performed for each of the wireless access points:

[0008] Acquire access point parameters corresponding to the wireless access point, the access point parameters including at least an inner circle threshold value, a current power value, and a maximum power value;

[0009] Finding adjacent access points corresponding to the wireless access point, and determining a maximum interference value and a minimum interference value of radio frequency interference generated by the wireless access point to each of the adjacent access points;

[0010] It is determined whether the maximum interference value is greater than a preset threshold value. If the maximum interference value is greater than the preset threshold value, the transmit power of the wireless access point is adjusted based on the relationship between the minimum interference value and the inner circle threshold value and the relationship between the current power value and the maximum power value.

[0011] Preferably, the access point parameters also include an outer ring threshold value and a minimum power value;

[0012] The step of adjusting the transmit power of the wireless access point based on the size relationship between the minimum interference value and the inner circle threshold value, and the size relationship between the current power value and the maximum power value comprises:

[0013] Determine whether the minimum interference value is less than the inner circle threshold value, and whether the current power value is less than the maximum power value;

[0014] If the minimum interference value is less than the inner circle threshold value, and the current power value is less than the maximum power value, generating a first power difference between the inner circle threshold value and the minimum interference value, and adjusting the transmit power of the wireless access point according to the first power difference and a preset increase value corresponding to the access controller;

[0015] If the minimum interference value is not less than the inner circle threshold value, and / or the current power value is not less than the maximum power value, the transmit power of the wireless access point is adjusted according to the size relationship between the maximum interference value and the outer circle threshold value, and the size relationship between the current power value and the minimum power value.

[0016] Preferably, the step of adjusting the transmit power of the wireless access point according to the first power difference and a preset increase value corresponding to the access controller comprises:

[0017] Determine whether the first power difference is greater than a preset increase value, and if the first power difference is greater than the preset increase value, determine whether the first power difference is less than a maximum power value;

[0018] If the first power difference is less than the maximum power value, performing an addition operation on the current power value and the first power difference to obtain a first operation result, and adjusting the transmit power of the wireless access point from the current power value to the first operation result;

[0019] If the first power difference is not less than the maximum power value, adjusting the transmit power of the wireless access point from the current power value to the maximum power value;

[0020] If the first power difference is not greater than the preset increase value, the step of adjusting the transmit power of the wireless access point according to the size relationship between the maximum interference value and the outer ring threshold value, and the size relationship between the current power value and the minimum power value is performed.

[0021] Preferably, the step of adjusting the transmit power of the wireless access point according to the magnitude relationship between the maximum interference value and the outer ring threshold value, and the magnitude relationship between the current power value and the minimum power value comprises:

[0022] Determine whether the maximum interference value is greater than the outer ring threshold value, and whether the current power value is greater than the minimum power value;

[0023] If the maximum interference value is greater than the outer ring threshold value, and the current power value is greater than the minimum power value, generating a second power difference between the maximum interference value and the outer ring threshold value, and adjusting the transmit power of the wireless access point according to the second power difference and a preset reduction value corresponding to the access controller;

[0024] If the maximum interference value is not greater than the outer ring threshold value, and the current power value is greater than the minimum power value, then determining whether the current power value is greater than the maximum power value;

[0025] If the current power value is greater than the maximum power value, the transmit power of the wireless access point is reduced from the current power value to the maximum power value.

[0026] Preferably, the step of adjusting the transmit power of the wireless access point according to the second power difference and a preset reduction value corresponding to the access controller comprises:

[0027] Determine whether the second power difference is greater than a preset reduction value, and if the second power difference is greater than the preset reduction value, determine whether the second power difference is greater than a minimum power value;

[0028] If the second power difference is greater than the minimum power value, performing a difference operation on the current power value and the second power difference to obtain a second operation result, and adjusting the transmit power of the wireless access point from the current power value to the second operation result;

[0029] If the second power difference is not greater than the minimum power value, the transmit power of the wireless access point is adjusted from the current power value to the minimum power value.

[0030] Preferably, the step of determining the maximum interference value and the minimum interference value of the radio frequency interference generated by the wireless access point to each of the adjacent access points comprises:

[0031] The radio frequency interference values ​​generated by the wireless access point to each of the adjacent access points are detected, and each of the radio frequency interference values ​​is corrected according to the maximum value of the transfer load of the wireless access point and the average load between the wireless access point and each of the adjacent access points. The correction formula is:

[0032] P'i=Pi+max(p)-p0;

[0033] Wherein, P'i represents the corrected RF interference value generated by the wireless access point to the i-th adjacent point, Pi represents the RF interference value before correction generated by the wireless access point to the i-th adjacent point, max(p) represents the maximum value of the transferred load, and p0 represents the average load;

[0034] Compare the corrected radio frequency interference values ​​in pairs to generate a sequence in which the values ​​are arranged from large to small;

[0035] The first and last values ​​in the sequence are searched, and the searched values ​​are determined as the maximum interference value and the minimum interference value.

[0036] Preferably, the step of determining whether the maximum interference value is greater than a preset threshold value includes:

[0037] If the maximum interference value is not greater than a preset threshold, the transmit power of the wireless access point is kept unchanged.

[0038] Furthermore, to achieve the above object, the present invention also provides an adaptive radio frequency tuning device, which is applied to an access controller in a wireless local area network, wherein the access controller is communicatively connected with a plurality of wireless access points, and the adaptive radio frequency tuning device comprises:

[0039] A detection module, used to detect whether a preset tuning time for performing radio frequency tuning on each of the wireless access points has arrived;

[0040] An acquisition module, configured to acquire, for each of the wireless access points, access point parameters corresponding to the wireless access point, wherein the access point parameters at least include an inner circle threshold value, a current power value, and a maximum power value;

[0041] A search module, used to search for adjacent access points corresponding to the wireless access point, and determine a maximum interference value and a minimum interference value of radio frequency interference generated by the wireless access point to each of the adjacent access points;

[0042] The adjustment module is used to determine whether the maximum interference value is greater than a preset threshold value. If it is greater than the preset threshold value, the transmission power of the wireless access point is adjusted based on the size relationship between the minimum interference value 1 and the inner circle threshold value, and the size relationship between the current power value and the maximum power value.

[0043] Furthermore, to achieve the above-mentioned object, the present invention also provides an adaptive radio frequency tuning system, the adaptive radio frequency tuning system comprising an access controller, the access controller being communicatively connected with a plurality of wireless access points;

[0044] The access controller includes a memory, a processor, a communication bus, and a control program stored in the memory:

[0045] The communication bus is used to realize the connection and communication between the processor and the storage;

[0046] The processor is used to execute the control program to implement the steps of the adaptive radio frequency tuning method as described above.

[0047] Furthermore, to achieve the above-mentioned purpose, the present invention also provides a storage medium, on which a control program is stored, and when the control program is executed by a processor, the steps of the above-mentioned adaptive radio frequency tuning method are implemented.

[0048] The adaptive radio frequency tuning method, device, system and storage medium of the present invention, when the access controller detects that the preset tuning time for performing radio frequency tuning on each wireless access point has arrived, for each of the wireless access points, the corresponding access point parameters are obtained, and the access point parameters at least include the inner circle threshold value, the current power value and the maximum power value; then the adjacent access point corresponding to the wireless access point is searched, and the maximum interference value and the minimum interference value of the radio frequency interference generated by the wireless access point to each adjacent access point are determined; then it is determined whether the maximum interference value is greater than the preset threshold value, if it is greater than the preset threshold value, then the transmit power of the wireless access point is adjusted based on the size relationship between the minimum interference value and the inner circle threshold value, and the size relationship between the current power value and the maximum power value. Among them, if the maximum interference value is greater than the preset threshold value, it means that the transmit power of the invalid access point is too large, and radio frequency interference is generated to the adjacent access point. At this time, the transmit power of the wireless access point is adjusted according to the size relationship between the minimum interference value and the inner circle threshold value, and the size relationship between the current power value and the maximum power value. The relationship between the minimum interference value and the inner circle threshold value is used to avoid the problem that the wireless access point transmission power is too small to ensure the wireless access point signal coverage. The relationship between the current power value and the maximum power value is used to avoid the problem that the wireless access point transmission power exceeds the maximum power value and causes RF interference to the adjacent wireless access points. The transmission power of the wireless access point is effectively adjusted through RF tuning, so that the wireless access point achieves a balance between signal coverage and avoiding interference. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a schematic diagram of the flow chart of the first embodiment of the adaptive radio frequency tuning method of the present invention;

[0050] Figure 2 It is a schematic diagram of the flow chart of the second embodiment of the adaptive radio frequency tuning method of the present invention;

[0051] Figure 3 It is a schematic diagram of the flow chart of the first embodiment of the adaptive radio frequency tuning device of the present invention;

[0052] Figure 4 The figure is a schematic diagram of the structure of the hardware operating environment involved in an embodiment of the adaptive radio frequency tuning system of the present invention.

[0053] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0054] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0055] The present invention provides an adaptive radio frequency tuning method, please refer to Figure 1 , Figure 1 The figure is a flowchart of the first embodiment of the adaptive radio frequency tuning method of the present invention.

[0056] The embodiment of the present invention provides an embodiment of an adaptive radio frequency tuning method. It should be noted that although the logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than that shown here. Specifically, the adaptive radio frequency tuning method in this embodiment includes:

[0057] Step S10: When the access controller detects that a preset tuning time for performing radio frequency tuning on each of the wireless access points has arrived, the following steps S20-S40 are executed for each of the wireless access points.

[0058] The adaptive radio frequency tuning method of this embodiment is applied to an access controller (AC) in a wireless local area network. The access controller is connected to multiple wireless access points (PA) in communication, so that each wireless access point can be centrally managed through the access controller, including but not limited to adjusting the channel and adjusting the transmission power through radio frequency tuning. This embodiment is preferably an adjustment management of the transmission power, by adjusting the transmission power of each wireless access point, while avoiding interference with the neighboring wireless access points while maintaining the signal coverage of the wireless access point.

[0059] Specifically, a preset tuning time for performing radio frequency tuning on each wireless access point is pre-set in the access controller. When the preset tuning time is detected to be reached, the access controller starts performing radio frequency tuning on the transmission power of each wireless access point connected thereto. In addition, different preset tuning times can be set for different access controllers at different locations. In addition, multiple different preset tuning times can be set for each wireless access point connected to the same controller, so that a part of the wireless access points corresponds to a certain preset tuning time, and another part of the wireless access points corresponds to another preset tuning time.

[0060] Step S20: acquiring access point parameters corresponding to the wireless access point, wherein the access point parameters at least include an inner circle threshold value, a current power value, and a maximum power value.

[0061] Furthermore, for each wireless access point, the corresponding access point parameters are obtained. The obtained access point parameters include at least the inner circle threshold value, the current power value and the maximum power value. Among them, the inner circle threshold value indicates that the transmit power of the AP makes the signal strength received by the adjacent AP low, and the interference is an acceptable value. In addition, if the transmit power is lower than the inner circle threshold value, the signal coverage between the APs cannot be guaranteed. That is, the transmit power of the AP is low and the coverage area is small, so that there are areas between the APs where the signal is not covered. Usually the inner circle threshold value is pre-set based on experience, such as -75dBm at 2.4GH2 and -80dBm at 5GHz. The current power value is the actual current transmit power of the wireless access point, and the maximum power value is the transmit power corresponding to the maximum coverage range of the wireless access point signal.

[0062] Step S30: searching for adjacent access points corresponding to the wireless access point, and determining a maximum interference value and a minimum interference value of radio frequency interference generated by the wireless access point on each of the adjacent access points.

[0063] Furthermore, the adjacent access points corresponding to the wireless access point are searched. The wireless access points with adjacent position relationships can be divided into the same group class in advance according to the positions of the wireless access points, and the adjacent access points corresponding to the wireless access points can be determined by group class search. In addition, the distances between the wireless access point and each adjacent access point may be different, so that the interference values ​​of the radio frequency interference generated by the wireless access point to each adjacent access point are different. The maximum and minimum interference values ​​can be determined by comparison as the maximum interference value and the minimum interference value. Specifically, the step of determining the maximum interference value and the minimum interference value of the radio frequency interference generated by the wireless access point to each of the adjacent access points includes:

[0064] Step S31, detecting the radio frequency interference value generated by the wireless access point to each of the adjacent access points, and correcting each of the radio frequency interference values ​​according to the maximum value of the transfer load of the wireless access point and the average load between the wireless access point and each of the adjacent access points;

[0065] Step S32, comparing the corrected radio frequency interference values ​​in pairs to generate a sequence in which the values ​​are arranged from large to small;

[0066] Step S33, searching for the first and last values ​​in the sequence, and determining the searched values ​​as the maximum interference value and the minimum interference value.

[0067] Furthermore, the radio frequency interference value generated by the wireless access point to its neighboring access point can be obtained by detecting the RSSI (Received signal strength Indicator) value. In addition, while the wireless access point generates radio frequency interference to its neighboring access point, there is also a situation where the wireless access point has too much load and needs to transfer part of its load to the neighboring access point, and each neighboring access point will generate its own interference. The transfer of load is caused by the wireless access point, which leads to an increase in the load of the neighboring access point, while the respective interference is not only the impact of the wireless access point on the neighboring access point. Therefore, in order to make the detected radio frequency signal interference value more accurately reflect the radio frequency interference generated by the wireless access point to its neighboring access point. The detected radio frequency interference value needs to be corrected by combining the maximum value of the transferred load of the wireless access point with the average load between the invalid access point and each neighboring access point. The correction formula can be seen in the following formula (1).

[0068] P'i=Pi+max(p)-p0;

[0069] Wherein, P'i represents the corrected RF interference value generated by the wireless access point to the i-th adjacent point, Pi represents the RF interference value before correction generated by the wireless access point to the i-th adjacent point, max(p) represents the maximum value of the load transferred by the wireless access point, and p0 represents the average load.

[0070] Furthermore, after the radio frequency interference values ​​generated by the detected wireless access point to each of its adjacent access points are corrected, the corrected radio frequency interference values ​​are compared in pairs to determine the magnitude relationship between the two values. The two values ​​are then arranged in the order of the larger number first and the smaller number last. After all radio frequency interference values ​​are compared in pairs, a sequence of values ​​arranged from large to small is formed. The value arranged in the first position and the value arranged in the last position are then extracted from the arranged sequence, the value arranged in the first position being the maximum interference value with the largest value, and the value arranged in the last position being the minimum interference value with the smallest value.

[0071] Step S40, determining whether the maximum interference value is greater than a preset threshold value, if greater than the preset threshold value, adjusting the transmit power of the wireless access point based on the size relationship between the minimum interference value and the inner circle threshold value, and the size relationship between the current power value and the maximum power value.

[0072] Furthermore, a preset threshold indicating the maximum interference value is pre-set in the access controller, and the preset threshold can be set based on testing or experience, for example, set to a value of zero indicating no interference. The generated maximum interference value is compared with the preset threshold to determine whether the maximum interference value is greater than the preset threshold. If it is greater than the preset threshold, it means that the maximum interference generated by the wireless access point to the adjacent access point is too large, which will affect the adjacent access point. At this time, based on the size relationship between the minimum interference value and the inner circle threshold value, and the size relationship between the current power value and the maximum power value, the transmit power of the wireless access point is adjusted to a suitable value. The adjusted value can avoid the excessive transmit power of the wireless access point and interfere with the adjacent access point, and can also ensure the signal coverage range of the wireless access point, thereby achieving a balance between the signal coverage and interference avoidance of the wireless access point.

[0073] The adaptive radio frequency tuning method of this embodiment, when the access controller detects that the preset tuning time for performing radio frequency tuning on each wireless access point has arrived, for each of the wireless access points, the corresponding access point parameters are obtained, and the access point parameters at least include the inner circle threshold value, the current power value and the maximum power value; then the adjacent access point corresponding to the wireless access point is searched, and the maximum interference value and the minimum interference value of the radio frequency interference generated by the wireless access point to each adjacent access point are determined; then it is determined whether the maximum interference value is greater than the preset threshold value, and if it is greater than the preset threshold value, the transmit power of the wireless access point is adjusted based on the size relationship between the minimum interference value and the inner circle threshold value, and the size relationship between the current power value and the maximum power value. Among them, if the maximum interference value is greater than the preset threshold value, it means that the transmit power of the invalid access point is too large, and radio frequency interference is generated to the adjacent access point. At this time, the transmit power of the wireless access point is adjusted according to the size relationship between the minimum interference value and the inner circle threshold value, and the size relationship between the current power value and the maximum power value. The relationship between the minimum interference value and the inner circle threshold value is used to avoid the problem that the wireless access point transmission power is too small to ensure the wireless access point signal coverage. The relationship between the current power value and the maximum power value is used to avoid the problem that the wireless access point transmission power exceeds the maximum power value and causes RF interference to the adjacent wireless access points. The transmission power of the wireless access point is effectively adjusted through RF tuning, so that the wireless access point achieves a balance between signal coverage and avoiding interference.

[0074] For further information, please refer to Figure 2 Based on the first embodiment of the adaptive radio frequency tuning method of the present invention, a second embodiment of the adaptive radio frequency tuning method of the present invention is proposed.

[0075] The second embodiment of the adaptive radio frequency tuning method is different from the first embodiment of the adaptive radio frequency tuning method in that the access point parameters further include an outer ring threshold value and a minimum power value;

[0076] The step of adjusting the transmit power of the wireless access point based on the size relationship between the minimum interference value and the inner circle threshold value, and the size relationship between the current power value and the maximum power value comprises:

[0077] Step S41, determining whether the minimum interference value is less than the inner circle threshold value, and whether the current power value is less than the maximum power value;

[0078] Step S42: if the minimum interference value is less than the inner circle threshold value, and the current power value is less than the maximum power value, a first power difference between the inner circle threshold value and the minimum interference value is generated, and the transmit power of the wireless access point is adjusted according to the first power difference and a preset increase value corresponding to the access controller;

[0079] Furthermore, the minimum interference value generated by the wireless access point is compared with the inner circle threshold value to determine whether the minimum interference value is less than the inner circle threshold value; at the same time, the current power value is compared with the maximum power value to determine whether the current power value is greater than the maximum power value. If it is determined through comparison that the minimum interference value is less than the inner circle threshold value and the current power value is greater than the maximum power value, it means that the minimum interference value is too small and signal coverage cannot be guaranteed between APs. At this time, the inner circle threshold value and the minimum interference value are difference calculated to obtain a first power difference between the two, and the transmit power of the wireless access point is adjusted according to the first power difference and the preset increase value corresponding to the access controller. Among them, the preset increase value corresponding to the access controller is a reference value for increasing the transmit power of the wireless access point each time, which is preset according to the access controller itself and the number of wireless access points connected. Specifically, the step of adjusting the transmit power of the wireless access point according to the first power difference and the preset increase value corresponding to the access controller includes:

[0080] Step S421, determining whether the first power difference is greater than a preset increase value, and if the first power difference is greater than the preset increase value, determining whether the first power difference is less than a maximum power value;

[0081] Step S422: If the first power difference is less than the maximum power value, add the current power value and the first power difference to obtain a first calculation result, and adjust the transmit power of the wireless access point from the current power value to the first calculation result;

[0082] Step S423: If the first power difference is not less than the maximum power value, adjusting the transmit power of the wireless access point from the current power value to the maximum power value;

[0083] Step S424: If the first power difference is not greater than the preset increase value, the step of adjusting the transmit power of the wireless access point according to the relationship between the maximum interference value and the outer ring threshold value and the relationship between the current power value and the minimum power value is performed.

[0084] Further, the first power difference is compared with a preset increase value to determine whether the first power difference is greater than the preset increase value. If it is greater than the preset increase value, the first power difference is further compared with the maximum power value to determine whether the first power difference is less than the maximum power value. If it is less than the maximum power value, the first power difference can be used to adjust the transmit power of the wireless access point. The current power value and the first power difference are added to obtain a first operation result, and the transmit power of the wireless access point is adjusted from the current power value to the first operation result, thereby realizing the increase adjustment of the transmit power of the wireless access point.

[0085] Furthermore, for the comparison between the first power difference and the maximum power value, if the comparison determines that the first power difference is not less than the maximum power value, it means that there is an adjacent access point that is offline and cannot provide network access services among the adjacent access points corresponding to the wireless access point. In order to compensate for the adjacent access point, the transmission power of the wireless access point is adjusted from the current power value to the maximum power value.

[0086] Further, for the comparison between the first power difference and the preset increase value, if the comparison determines that the first power difference is not greater than the preset increase value, it means that the first power difference is too small, and if it is adjusted accordingly, the coverage range of the wireless access point may be small. At this time, the transmit power of the wireless access point is adjusted according to the size relationship between the maximum interference value and the outer ring threshold value, and the size relationship between the current power value and the minimum power value.

[0087] Step S43: If the minimum interference value is not less than the inner circle threshold value, and / or the current power value is not less than the maximum power value, the transmit power of the wireless access point is adjusted according to the size relationship between the maximum interference value and the outer circle threshold value, and the size relationship between the current power value and the minimum power value.

[0088] Furthermore, the access point parameters of the wireless access point also include an outer circle threshold value and a minimum power value. Among them, the outer circle threshold value indicates that the transmit power of the AP makes the signal strength received by the adjacent AP high, resulting in serious interference. In addition, if the transmit power is higher than the outer circle threshold value, mutual perception between APs cannot be avoided. That is, the AP's transmit power is high and the coverage area is large, so that there is a perception area between APs. The outer circle threshold value can also be pre-set based on experience, such as -60dBm at 2.4GH2 and -65dBm at 5GHz. The minimum power value is the transmit power corresponding to the minimum coverage range of the wireless access point signal.

[0089] For the comparison between the minimum interference value and the inner circle threshold value, and the comparison between the current power value and the maximum power value, if it is determined that the minimum interference value is not less than the inner circle threshold value, or the current power value is not less than the maximum power value, or the current power value is not less than the maximum power value while the minimum interference value is not less than the inner circle threshold value. At this time, according to the size relationship between the maximum interference value and the outer circle threshold value, and the size relationship between the current power value and the minimum power value, the transmit power of the wireless access point is adjusted. Specifically, the step of adjusting the transmit power of the wireless access point according to the size relationship between the maximum interference value and the outer circle threshold value, and the size relationship between the current power value and the minimum power value includes:

[0090] Step S431, determining whether the maximum interference value is greater than the outer ring threshold value, and whether the current power value is greater than the minimum power value;

[0091] Step S432: if the maximum interference value is greater than the outer ring threshold value, and the current power value is greater than the minimum power value, a second power difference between the maximum interference value and the outer ring threshold value is generated, and the transmit power of the wireless access point is adjusted according to the second power difference and a preset reduction value corresponding to the access controller;

[0092] Further, the maximum interference value is compared with the outer circle threshold value to determine whether the maximum interference value is greater than the outer circle threshold value, and the current power value is compared with the minimum power value to determine whether the current power value is greater than the minimum power value. If it is determined through comparison that the maximum interference value is greater than the outer circle threshold value, and the current power value is greater than the minimum power value, it means that the maximum interference value is too large, and the APs may perceive each other and affect their respective communications. At this time, the maximum interference value and the outer circle threshold value are differenced to generate a second power difference between the two, and the transmit power of the wireless access point is adjusted according to the second power difference and the preset reduction value corresponding to the access controller. Among them, the preset reduction value corresponding to the access controller is a reference value for reducing the transmit power of the wireless access point each time, which is preset based on the access controller's own situation and the number of wireless access points connected. Specifically, the step of adjusting the transmit power of the wireless access point according to the second power difference and the preset reduction value corresponding to the access controller includes:

[0093] Step a1, determining whether the second power difference is greater than a preset reduction value, and if the second power difference is greater than the preset reduction value, determining whether the second power difference is greater than a minimum power value;

[0094] Step a2: if the second power difference is greater than the minimum power value, performing a difference operation on the current power value and the second power difference to obtain a second operation result, and adjusting the transmit power of the wireless access point from the current power value to the second operation result;

[0095] Step a3: If the second power difference is not greater than the minimum power value, adjusting the transmit power of the wireless access point from the current power value to the minimum power value.

[0096] Furthermore, the second power difference is compared with a preset reduction value to determine whether the second power difference is greater than the preset reduction value. If it is greater than the preset reduction value, the second power difference is further compared with the minimum power value to determine whether the second power difference is greater than the minimum power value. If it is greater than the minimum power value, the second power difference can be used to adjust the transmit power of the wireless access point. A difference operation is performed between the current power value and the second power difference to obtain a second operation result, and the transmit power of the wireless access point is adjusted from the current power value to the second operation result, thereby realizing the transmit power reduction adjustment of the wireless access point.

[0097] Furthermore, for the comparison between the second power difference value and the minimum power value, if the comparison determines that the second power difference value is not greater than the maximum power value, it means that there is a new adjacent access point that has come online and can provide network access services among the adjacent access points corresponding to the wireless access point. In order to avoid interference with the adjacent access point, the transmit power of the wireless access point is adjusted from the current power value to the minimum power value.

[0098] Step S433: if the maximum interference value is not greater than the outer ring threshold value, and the current power value is greater than the minimum power value, determine whether the current power value is greater than the maximum power value;

[0099] Step S434: if the current power value is greater than the maximum power value, reducing the transmit power of the wireless access point from the current power value to the maximum power value.

[0100] Further, for the comparison between the maximum interference value and the outer ring threshold value, and the comparison between the current power value and the minimum power value, if it is determined that the maximum interference value is less than or equal to the outer ring threshold value, and the current power value is greater than the minimum power value, the current power value is compared with the maximum power value to determine whether the current power value is greater than the maximum power value. If it is greater than the maximum power value, it means that the current transmit power of the wireless access point is too large, and the transmit power is reduced from the current power value to the maximum power value, so as to achieve the transmit power reduction adjustment of the wireless access point.

[0101] In this embodiment, in the process of adjusting the transmit power of the wireless access point according to the size relationship between the minimum interference value and the inner circle threshold value, and the size relationship between the current power value and the maximum power value, the outer circle threshold value and the minimum power value of the wireless access point are introduced, and the transmit power situation of the wireless access point reflected by each value is fully considered, so that the transmit power of the wireless access point is adjusted more accurately.

[0102] In addition, an embodiment of the present invention also provides an adaptive radio frequency tuning device. Figure 3 , Figure 3 The figure is a schematic diagram of the module structure involved in the embodiment of the adaptive radio frequency tuning device of the present invention.

[0103] Specifically, in this embodiment, the adaptive radio frequency tuning device is applied to an access controller in a wireless local area network, the access controller is communicatively connected with a plurality of wireless access points, and the adaptive radio frequency tuning device includes:

[0104] A detection module, used to detect whether a preset tuning time for performing radio frequency tuning on each of the wireless access points has arrived;

[0105] An acquisition module, configured to acquire, for each of the wireless access points, access point parameters corresponding to the wireless access point, wherein the access point parameters at least include an inner circle threshold value, a current power value, and a maximum power value;

[0106] A search module, used to search for adjacent access points corresponding to the wireless access point, and determine a maximum interference value and a minimum interference value of radio frequency interference generated by the wireless access point to each of the adjacent access points;

[0107] The adjustment module is used to determine whether the maximum interference value is greater than a preset threshold value. If it is greater than the preset threshold value, the transmission power of the wireless access point is adjusted based on the size relationship between the minimum interference value 1 and the inner circle threshold value, and the size relationship between the current power value and the maximum power value.

[0108] The specific implementation of the adaptive radio frequency tuning device of the present invention is basically the same as the embodiments of the adaptive radio frequency tuning method described above, and will not be described in detail here.

[0109] In addition, an embodiment of the present invention also provides an adaptive radio frequency tuning system. Figure 4 , Figure 4 It is a schematic diagram of the structure of the equipment hardware operating environment involved in the embodiment of the adaptive radio frequency tuning system of the present invention.

[0110] like Figure 4 As shown, the adaptive radio frequency tuning system may include: a processor 1001, such as a CPU, a communication bus 1002, a user interface 1003, a network interface 1004, and a storage 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a WI-FI interface). The storage 1005 may be a high-speed RAM storage, or a stable storage (non-volatile memory), such as a disk storage. The storage 1005 may also be a storage device independent of the aforementioned processor 1001.

[0111] Those skilled in the art will understand that Figure 4 The hardware structure of the adaptive radio frequency tuning system shown in the figure does not constitute a limitation on the adaptive radio frequency tuning system, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[0112] like Figure 4As shown, the storage 1005 as a storage medium may include an operating system, a network communication module, a user interface module and a control program. The operating system is a program for managing and controlling the adaptive radio frequency tuning system and software resources, and supports the operation of the network communication module, the user interface module, the control program and other programs or software; the network communication module is used to manage and control the network interface 1004; the user interface module is used to manage and control the user interface 1003.

[0113] exist Figure 4 In the hardware structure of the adaptive radio frequency tuning system shown, the network interface 1004 is mainly used to connect to other system servers and communicate data with other system servers; the user interface 1003 is mainly used to connect to the client (user end) and communicate data with the client; the processor 1001 can call the control program stored in the storage 1005 and perform the following operations:

[0114] When the access controller detects that a preset tuning time for performing radio frequency tuning on each of the wireless access points has arrived, the following steps are performed for each of the wireless access points:

[0115] Acquire access point parameters corresponding to the wireless access point, the access point parameters including at least an inner circle threshold value, a current power value, and a maximum power value;

[0116] Finding adjacent access points corresponding to the wireless access point, and determining a maximum interference value and a minimum interference value of radio frequency interference generated by the wireless access point to each of the adjacent access points;

[0117] It is determined whether the maximum interference value is greater than a preset threshold value. If the maximum interference value is greater than the preset threshold value, the transmit power of the wireless access point is adjusted based on the relationship between the minimum interference value and the inner circle threshold value and the relationship between the current power value and the maximum power value.

[0118] Furthermore, the access point parameters also include an outer ring threshold value and a minimum power value;

[0119] The step of adjusting the transmit power of the wireless access point based on the size relationship between the minimum interference value and the inner circle threshold value, and the size relationship between the current power value and the maximum power value comprises:

[0120] Determine whether the minimum interference value is less than the inner circle threshold value, and whether the current power value is less than the maximum power value;

[0121] If the minimum interference value is less than the inner circle threshold value, and the current power value is less than the maximum power value, generating a first power difference between the inner circle threshold value and the minimum interference value, and adjusting the transmit power of the wireless access point according to the first power difference and a preset increase value corresponding to the access controller;

[0122] If the minimum interference value is not less than the inner circle threshold value, and / or the current power value is not less than the maximum power value, the transmit power of the wireless access point is adjusted according to the size relationship between the maximum interference value and the outer circle threshold value, and the size relationship between the current power value and the minimum power value.

[0123] Further, the step of adjusting the transmit power of the wireless access point according to the first power difference and a preset increase value corresponding to the access controller includes:

[0124] Determine whether the first power difference is greater than a preset increase value, and if the first power difference is greater than the preset increase value, determine whether the first power difference is less than a maximum power value;

[0125] If the first power difference is less than the maximum power value, performing an addition operation on the current power value and the first power difference to obtain a first operation result, and adjusting the transmit power of the wireless access point from the current power value to the first operation result;

[0126] If the first power difference is not less than the maximum power value, adjusting the transmit power of the wireless access point from the current power value to the maximum power value;

[0127] If the first power difference is not greater than the preset increase value, the step of adjusting the transmit power of the wireless access point according to the size relationship between the maximum interference value and the outer ring threshold value, and the size relationship between the current power value and the minimum power value is performed.

[0128] Further, the step of adjusting the transmit power of the wireless access point according to the magnitude relationship between the maximum interference value and the outer ring threshold value, and the magnitude relationship between the current power value and the minimum power value includes:

[0129] Determine whether the maximum interference value is greater than the outer ring threshold value, and whether the current power value is greater than the minimum power value;

[0130] If the maximum interference value is greater than the outer ring threshold value, and the current power value is greater than the minimum power value, generating a second power difference between the maximum interference value and the outer ring threshold value, and adjusting the transmit power of the wireless access point according to the second power difference and a preset reduction value corresponding to the access controller;

[0131] If the maximum interference value is not greater than the outer ring threshold value, and the current power value is greater than the minimum power value, then determining whether the current power value is greater than the maximum power value;

[0132] If the current power value is greater than the maximum power value, the transmit power of the wireless access point is reduced from the current power value to the maximum power value.

[0133] Further, the step of adjusting the transmit power of the wireless access point according to the second power difference and a preset reduction value corresponding to the access controller includes:

[0134] Determine whether the second power difference is greater than a preset reduction value, and if the second power difference is greater than the preset reduction value, determine whether the second power difference is greater than a minimum power value;

[0135] If the second power difference is greater than the minimum power value, performing a difference operation on the current power value and the second power difference to obtain a second operation result, and adjusting the transmit power of the wireless access point from the current power value to the second operation result;

[0136] If the second power difference is not greater than the minimum power value, the transmit power of the wireless access point is adjusted from the current power value to the minimum power value.

[0137] Furthermore, the step of determining the maximum interference value and the minimum interference value of the radio frequency interference generated by the wireless access point to each of the adjacent access points includes:

[0138] Detecting the radio frequency interference values ​​generated by the wireless access point to each of the adjacent access points, and comparing the radio frequency interference values ​​in pairs to generate a sequence in which the values ​​are arranged from large to small;

[0139] The first and last values ​​in the sequence are searched, and the searched values ​​are determined as the maximum interference value and the minimum interference value.

[0140] Further, after the step of determining whether the maximum interference value is greater than a preset threshold, the processor 1001 may call a control program stored in the storage 1005 and perform the following operations:

[0141] If the maximum interference value is not greater than a preset threshold, the transmit power of the wireless access point is kept unchanged.

[0142] The specific implementation of the adaptive radio frequency tuning system of the present invention is basically the same as the embodiments of the adaptive radio frequency tuning method described above, and will not be repeated here.

[0143] The embodiment of the present invention further provides a storage medium on which a control program is stored, and when the control program is executed by a processor, the steps of the above-mentioned adaptive radio frequency tuning method are implemented.

[0144] The storage medium of the present invention may be a computer-readable storage medium, and its implementation method is substantially the same as that of the above-mentioned embodiments of the adaptive radio frequency tuning method, and will not be described in detail herein.

[0145] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims. All equivalent structures or equivalent process changes made using the contents of the specification and drawings of the present invention, or directly or indirectly used in other related technical fields, are protected by the present invention.

Claims

1. An adaptive radio frequency tuning method, applied to an access controller in a wireless local area network, characterized in that: The access controller is communicatively connected with a plurality of wireless access points, and the adaptive radio frequency tuning method comprises: When the access controller detects that a preset tuning time for performing radio frequency tuning on each of the wireless access points has arrived, the following steps are performed for each of the wireless access points: Acquire access point parameters corresponding to the wireless access point, the access point parameters including at least an inner circle threshold value, a current power value, and a maximum power value; Finding adjacent access points corresponding to the wireless access point, and determining a maximum interference value and a minimum interference value of radio frequency interference generated by the wireless access point to each of the adjacent access points; It is determined whether the maximum interference value is greater than a preset threshold value. If the maximum interference value is greater than the preset threshold value, the transmit power of the wireless access point is adjusted based on the relationship between the minimum interference value and the inner circle threshold value and the relationship between the current power value and the maximum power value.

2. The adaptive radio frequency tuning method according to claim 1, characterized in that: The access point parameters also include an outer ring threshold value and a minimum power value; The step of adjusting the transmit power of the wireless access point based on the size relationship between the minimum interference value and the inner circle threshold value, and the size relationship between the current power value and the maximum power value comprises: Determine whether the minimum interference value is less than the inner circle threshold value, and whether the current power value is less than the maximum power value; If the minimum interference value is less than the inner circle threshold value, and the current power value is less than the maximum power value, generating a first power difference between the inner circle threshold value and the minimum interference value, and adjusting the transmit power of the wireless access point according to the first power difference and a preset increase value corresponding to the access controller; If the minimum interference value is not less than the inner circle threshold value, and / or the current power value is not less than the maximum power value, the transmit power of the wireless access point is adjusted according to the size relationship between the maximum interference value and the outer circle threshold value, and the size relationship between the current power value and the minimum power value.

3. The adaptive radio frequency tuning method according to claim 2, wherein: The step of adjusting the transmit power of the wireless access point according to the first power difference and a preset increase value corresponding to the access controller includes: Determine whether the first power difference is greater than a preset increase value, and if the first power difference is greater than the preset increase value, determine whether the first power difference is less than a maximum power value; If the first power difference is less than the maximum power value, performing an addition operation on the current power value and the first power difference to obtain a first operation result, and adjusting the transmit power of the wireless access point from the current power value to the first operation result; If the first power difference is not less than the maximum power value, adjusting the transmit power of the wireless access point from the current power value to the maximum power value; If the first power difference is not greater than the preset increase value, the step of adjusting the transmit power of the wireless access point according to the size relationship between the maximum interference value and the outer ring threshold value, and the size relationship between the current power value and the minimum power value is performed.

4. The adaptive radio frequency tuning method according to claim 2, wherein: The step of adjusting the transmit power of the wireless access point according to the magnitude relationship between the maximum interference value and the outer ring threshold value, and the magnitude relationship between the current power value and the minimum power value comprises: Determine whether the maximum interference value is greater than the outer ring threshold value, and whether the current power value is greater than the minimum power value; If the maximum interference value is greater than the outer ring threshold value, and the current power value is greater than the minimum power value, generating a second power difference between the maximum interference value and the outer ring threshold value, and adjusting the transmit power of the wireless access point according to the second power difference and a preset reduction value corresponding to the access controller; If the maximum interference value is not greater than the outer ring threshold value, and the current power value is greater than the minimum power value, then determining whether the current power value is greater than the maximum power value; If the current power value is greater than the maximum power value, the transmit power of the wireless access point is reduced from the current power value to the maximum power value.

5. The adaptive radio frequency tuning method according to claim 4, characterized in that: The step of adjusting the transmit power of the wireless access point according to the second power difference and a preset reduction value corresponding to the access controller comprises: Determine whether the second power difference is greater than a preset reduction value, and if the second power difference is greater than the preset reduction value, determine whether the second power difference is greater than a minimum power value; If the second power difference is greater than the minimum power value, performing a difference operation on the current power value and the second power difference to obtain a second operation result, and adjusting the transmit power of the wireless access point from the current power value to the second operation result; If the second power difference is not greater than the minimum power value, the transmit power of the wireless access point is adjusted from the current power value to the minimum power value.

6. The adaptive radio frequency tuning method according to any one of claims 1 to 5, characterized in that: The step of determining the maximum interference value and the minimum interference value of the radio frequency interference generated by the wireless access point to each of the adjacent access points comprises: The radio frequency interference values ​​generated by the wireless access point to each of the adjacent access points are detected, and each of the radio frequency interference values ​​is corrected according to the maximum value of the transfer load of the wireless access point and the average load between the wireless access point and each of the adjacent access points. The correction formula is: P'i=Pi+max(p)-p0; Wherein, P'i represents the corrected RF interference value generated by the wireless access point to the i-th adjacent point, Pi represents the RF interference value before correction generated by the wireless access point to the i-th adjacent point, max(p) represents the maximum value of the transferred load, and p0 represents the average load; Compare the corrected radio frequency interference values ​​in pairs to generate a sequence in which the values ​​are arranged from large to small; The first and last values ​​in the sequence are searched, and the searched values ​​are determined as the maximum interference value and the minimum interference value.

7. The adaptive radio frequency tuning method according to any one of claims 1 to 5, characterized in that: The step of determining whether the maximum interference value is greater than a preset threshold value includes: If the maximum interference value is not greater than a preset threshold, the transmit power of the wireless access point is kept unchanged.

8. An adaptive radio frequency tuning device, applied to an access controller in a wireless local area network, characterized in that: The access controller is communicatively connected with a plurality of wireless access points, and the adaptive radio frequency tuning device comprises: A detection module, used to detect whether a preset tuning time for performing radio frequency tuning on each of the wireless access points has arrived; An acquisition module, configured to acquire, for each of the wireless access points, access point parameters corresponding to the wireless access point, wherein the access point parameters at least include an inner circle threshold value, a current power value, and a maximum power value; A search module, used to search for adjacent access points corresponding to the wireless access point, and determine a maximum interference value and a minimum interference value of radio frequency interference generated by the wireless access point to each of the adjacent access points; The adjustment module is used to determine whether the maximum interference value is greater than a preset threshold value. If it is greater than the preset threshold value, the transmission power of the wireless access point is adjusted based on the size relationship between the minimum interference value 1 and the inner circle threshold value, and the size relationship between the current power value and the maximum power value.

9. An adaptive radio frequency tuning system, characterized in that: The adaptive radio frequency tuning system includes an access controller, and the access controller is communicatively connected with a plurality of wireless access points; The access controller includes a memory, a processor, a communication bus, and a control program stored in the memory: The communication bus is used to realize the connection and communication between the processor and the storage; The processor is used to execute the control program to implement the steps of the adaptive radio frequency tuning method according to any one of claims 1 to 8.

10. A storage medium, characterized in that: The storage medium stores a control program, and when the control program is executed by the processor, the steps of the adaptive radio frequency tuning method according to any one of claims 1 to 8 are implemented.

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