CN114828121A

CN114828121A - Wireless roaming control method and device and electronic equipment

Info

Publication number: CN114828121A
Application number: CN202210446540.7A
Authority: CN
Inventors: 杨前; 高健宁
Original assignee: TP Link Technologies Co Ltd
Current assignee: TP Link Technologies Co Ltd
Priority date: 2022-04-26
Filing date: 2022-04-26
Publication date: 2022-07-29
Anticipated expiration: 2042-04-26
Also published as: CN114828121B

Abstract

The present application relates to the field of wireless roaming, and in particular, to a wireless roaming control method, apparatus and electronic device. The method comprises the following steps: obtaining a first number of access points managed by a controller when the controller is operating in a first roaming mode; if the first number is larger than a first switching threshold value, switching the controller from the first roaming mode to a second roaming mode; if the first number is smaller than or equal to the first switching threshold value, acquiring a second number of terminal devices associated with the access point; and if the second quantity is larger than a second switching threshold value, switching the controller from the first roaming mode to the second roaming mode. The controller can be determined to operate in the first roaming mode or the second roaming mode according to the first number of the access points and the second number of the terminal devices, different roaming modes can be selected according to different scenes, and configuration of a user is not needed.

Description

Wireless roaming control method and device and electronic equipment

Technical Field

The present application relates to the field of wireless roaming, and in particular, to a wireless roaming control method and apparatus, and an electronic device.

Background

In order to enable a terminal to switch between Access Points (APs) and obtain a good internet experience, different roaming methods are available in the prior art.

The first roaming method is that a terminal can be connected to a current AP more stably by setting a higher roaming trigger threshold and a stricter roaming target screening condition, and the terminal is guided to roam only when the signal strength of the current AP is particularly poor.

The second roaming method is suitable for a household scene with few terminals, but in a commercial scene with many terminal devices, each terminal competes for bandwidth so that part of the terminals cannot obtain good user experience, a large number of terminals roam frequently, too much channel resources are occupied, and the network performance cannot be fully exerted.

Therefore, the existing roaming method cannot be applied to different scenes.

Disclosure of Invention

The embodiment of the application provides a wireless roaming control method, a wireless roaming control device and electronic equipment, which can be suitable for different scenes.

In a first aspect, an embodiment of the present application provides a wireless roaming control method, where the method includes:

obtaining a first number of access points managed by a controller when the controller is operating in a first roaming mode;

if the first number is larger than a first switching threshold value, switching the controller from the first roaming mode to a second roaming mode;

if the first number is smaller than or equal to the first switching threshold value, acquiring a second number of terminal devices associated with the access point;

and if the second quantity is larger than a second switching threshold value, switching the controller from the first roaming mode to the second roaming mode.

In a possible implementation manner of the first aspect, the method further includes:

if the second quantity is less than or equal to the second switching threshold, obtaining the working channel occupancy of each access point and the packet loss rate of each terminal device;

determining a target access point with a channel occupancy rate larger than a preset occupancy rate, and/or determining a target terminal device with a message packet loss rate larger than a preset packet loss rate;

and when the third number corresponding to the target access point is greater than a first preset number and/or the fourth number corresponding to the target terminal equipment is greater than a second preset number, switching the first roaming mode into the second roaming mode by the controller.

Wherein the method further comprises:

when the controller operates in the first roaming mode, acquiring the received signal strength of each terminal device;

when the received signal strength of first target terminal equipment is smaller than or equal to a first roaming threshold value, acquiring a data transmission rate between each first access point and the first target terminal equipment, wherein the first access point is an access point which is not associated with the first target terminal equipment;

and associating the first target terminal equipment with a first target access point, wherein the first target access point is the access point with the maximum transmission rate between the first target terminal equipment and each first access point.

Wherein the working channels of the access points are the same, the method further comprises:

when the controller operates in the first roaming mode, acquiring channel parameters of each channel in each access point;

determining a target channel according to the channel parameters of each channel in each access point;

and switching the channel of each access point to the target channel.

Wherein the method further comprises:

when the controller operates in the second roaming mode, acquiring the received signal strength of each terminal device;

when the received signal strength of a second target terminal device is smaller than or equal to a second roaming threshold, acquiring a data transmission rate of each second access point and the second target terminal device, a working channel occupancy rate of each second access point, and a signal difference value between the signal strength of the second target terminal device and each second access point and the signal strength of the second target terminal device and an associated access point, wherein the second roaming threshold is smaller than the first roaming threshold, and the second access point is an access point which is not associated with the second target terminal device;

determining the second target access point according to the data transmission rate of the second access point and the terminal equipment, the working channel occupancy rate of each second access point, and the signal difference value between the signal strength of the second target terminal equipment and each second access point and the signal strength of the second target terminal equipment and the associated access point;

and associating the second target terminal equipment with the second target access point.

Wherein the working channels of the access points are different, the method further comprises:

when the controller operates in the second roaming mode, acquiring radio frequency information of each access point and adjacent access points;

and respectively adjusting the channel of each access point according to the radio frequency information of each access point and the adjacent access points.

Wherein after the switching the first roaming mode to the second roaming mode, further comprising:

acquiring a fifth number of terminal devices associated with each access point;

determining a fifth number of third target access points smaller than a third preset number, and acquiring load quantities of all channels corresponding to the third target access points;

and switching the channel of the third target access point to a channel with the minimum load capacity.

Wherein the method further comprises:

when the controller operates in a second roaming mode, if the first number is less than or equal to the first handover threshold, the second number is less than or equal to the second handover threshold, the third number corresponding to the target access point is less than or equal to the first preset number, and the fourth number corresponding to the target terminal device is less than or equal to the second preset number, switching the controller from the second roaming mode to the first roaming mode.

In a second aspect, the present application provides a wireless roaming control device, including:

a first obtaining module, configured to obtain a first number of access points managed by a controller when the controller operates in a first roaming mode;

a first switching module, configured to switch the controller from the first roaming mode to a second roaming mode if the first number is greater than a first switching threshold;

a second obtaining module, configured to obtain a second number of terminal devices associated with the access point if the first number is smaller than or equal to the first handover threshold;

and the second switching module is used for switching the controller from the first roaming mode to the second roaming mode if the second quantity is greater than a second switching threshold.

In a third aspect, an embodiment of the present application provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the wireless roaming control method according to any one of the first aspect when executing the computer program.

In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, where a computer program is stored, where the computer program is executed by a processor to implement the wireless roaming control method according to any one of the first aspect.

Compared with the prior art, the embodiment of the application has the advantages that: in the technical scheme of the application, when the controller operates in a first roaming mode, a first number of access points managed by the controller is acquired; if the first number is larger than a first switching threshold value, switching the controller from the first roaming mode to a second roaming mode; if the first number is smaller than or equal to the first switching threshold value, acquiring a second number of terminal devices associated with the access point; and if the second quantity is larger than a second switching threshold value, switching the controller from the first roaming mode to the second roaming mode. The controller can be determined to operate in the first roaming mode or the second roaming mode according to the first number of the access points and the second number of the terminal devices, different roaming modes can be selected according to different scenes, and configuration of a user is not needed.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic view of an application scenario of a wireless roaming control method according to an embodiment of the present application;

fig. 2 is a schematic flow chart of a wireless roaming control method according to an embodiment of the present application;

fig. 3 is a schematic flow chart of a wireless roaming method according to an embodiment of the present application;

fig. 4 is a diagram illustrating an example of a method for controlling an access point to switch channels by a controller according to an embodiment of the present application;

fig. 5 is a schematic flow chart of a method for controlling an access point to switch channels by a controller according to an embodiment of the present application;

fig. 6 is a schematic flow chart of another wireless roaming method provided by the embodiments of the present application;

fig. 7 is a schematic flow chart of another method for controlling an access point to switch channels by a controller according to an embodiment of the present application;

fig. 8 is a schematic flow chart of another wireless roaming control method provided in the embodiments of the present application;

fig. 9 is a schematic flow chart of another wireless roaming control method provided in the embodiments of the present application;

fig. 10 is a schematic structural diagram of a wireless roaming control device according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed Description

In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail, and in other instances, specific technical details may be mutually referenced in various embodiments, and a specific system not described in one embodiment may be referenced in other embodiments.

It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It should also be understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

Reference throughout this specification to "one embodiment of the present application" or "some embodiments" or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in other embodiments," "an embodiment of the present application," "other embodiments of the present application," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather mean "one or more but not all embodiments" unless specifically stated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise.

Furthermore, in the description of the present application and the appended claims, the terms "first," "second," and the like are used for distinguishing between descriptions and not necessarily for describing or implying relative importance.

In order to enable the terminal to switch among the APs and obtain good internet experience, each manufacturer has different roaming schemes. The following roaming schemes currently exist on the market.

Scheme 1: according to the conservative roaming scheme, a higher roaming trigger threshold value and a stricter roaming target screening condition are set, so that the terminal can be connected to the current AP more stably, roaming is guided only when the signal intensity of the current AP is extremely poor, and delay experience brought to the terminal by roaming switching and burden caused to equipment and a network by frequent roaming of a large number of terminals are reduced. This conservative roaming scheme is suitable for business scenarios.

Scheme 2: in the aggressive roaming scheme, the terminal is guided to roam more easily by setting a lower roaming trigger threshold and a looser roaming target screening condition. In order to reduce the burden brought by roaming switching, most of the devices adopting the scheme unify the channels of the devices in the network, sacrifice the bandwidth and change the short roaming switching time. This radical solution is suitable for home scenarios.

There are different drawbacks to the above-mentioned existing solutions.

Scheme 1: the method is not suitable for a household scene, the number of the APs and the number of the terminals are small in a household environment, and at the moment, the bandwidth is sufficient, so that the influence of channel competition of the terminals brought by the same channel can be almost ignored and is not remembered. In the co-channel, the influence of roaming handover and terminal scanning can be ignored. Therefore, in a home environment, it is more important that the terminal is connected to an AP with better signal strength than to an AP with poor signal stability all the time. In addition, in a home environment, the overall space is small, and for a user, the time for the user to move between two APs is relatively short, so that the user needs to trigger roaming more sensitively.

Scheme 2: the method is not suitable for commercial environment, due to the active roaming strategy of the scheme 2, in a commercial scene, a large number of terminals frequently roam, and a large number of 11k/11v messages reported by the terminals are scanned and the associated related messages are transmitted in a network topology, so that great pressure is caused to the whole network. Meanwhile, because each AP is in the same channel, when a large number of terminals are connected, each terminal competes for bandwidth, so that some terminals cannot obtain good user experience, and the network performance cannot be fully exerted.

Therefore, the existing roaming method cannot be applied to different scenes.

In order to solve the above defects, the inventive concept of the present application is:

according to the method and the device, whether the AC operates in the first roaming mode or the second roaming mode can be determined according to the first number of the Access points and the second number of the terminal devices under the management of an Access Control (AC), different roaming modes can be selected according to different scenes, and configuration by a user is not needed.

In order to explain the technical means of the present application, the following description will be given by way of specific examples.

Referring to fig. 1, fig. 1 is a schematic view of an application scenario of a wireless roaming control method according to an embodiment of the present application, and only a portion related to the present application is shown for convenience of description. The application scenario includes: controller 100, access point 200, terminal 300.

The controller 100 is a wireless access control server, and is responsible for aggregating data from different access points 200 and accessing the data to the Internet, and simultaneously performing control functions such as configuration management and wireless user authentication of the access points 200. One controller 100 can be connected to 1024 access points 200 at maximum.

The access point 200, i.e. a wireless access point, is an access point of a wireless network, and is commonly referred to as a "hot spot", and the access point 200 is equivalent to a bridge connected with a wire network and a wireless network, and mainly functions to connect the wireless network terminals 300 together, and then access the wireless network to an ethernet, thereby achieving the purpose of wireless coverage of the network. One access point 200 can be connected to 255 terminals 300 at maximum.

The terminal 300 includes, but is not limited to, a mobile phone, a tablet computer, a wearable device, a vehicle-mounted device, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, a Personal Digital Assistant (PDA), and the like, and the specific type of the terminal device is not limited in this embodiment.

In this embodiment of the present application, the controller 100 is configured to implement autonomous roaming mode switching according to the number of the access points 200 and the terminals 300, please refer to fig. 2 for a specific roaming switching method, and fig. 2 is a schematic flowchart of a wireless roaming control method provided in this embodiment of the present application. The execution subject of the method in fig. 2 may be the controller 100 in fig. 1. As shown in fig. 2, the method includes: s201 to S202.

S201, when the controller operates in the first roaming mode, the controller acquires a first number of access points managed by the controller.

Specifically, the roaming switching method adopted in the embodiment of the present application aims to enable the controller to operate in different roaming methods in different application scenarios. The application scenarios in the embodiment of the present application can be roughly divided into two scenarios, one is a home scenario, and the other is a business scenario, where the number of access points managed by the controller is small in the home scenario, and the number of access points managed by the controller is large in the business scenario. In the embodiment of the application, the number of the access points needs to be specifically configured according to the requirements of an actual scene, and the number of the access points is relatively large, and the number of the access points in a commercial scene is larger than that of the access points in a household scene.

The number of access points is referred to as a first number in the embodiments of the present application.

It should be noted that: the commercial scene in the embodiment of the application is not limited to a market, an amusement park, a movie theater, and the like, and when the number of access points managed by the controller in the home scene is large, or the number of terminals associated with the access points is large, or the terminal traffic is large, the scene may also be regarded as a commercial scene. Similarly, the home scenario in the embodiment of the present application is not limited to a scenario such as a villa, an apartment, a house, or the like, and when the number of access points managed by the controller in a commercial scenario is small, or the number of terminals associated with the access points is small, or the terminal traffic is small, the scenario may also be regarded as the home scenario.

In this embodiment of the present application, when the controller starts to operate, it is unable to know a scene where the controller is located, and it is unable to select whether to operate in the first roaming mode or the second roaming mode. The controller then determines whether the controller is operating in the first roaming mode or the second roaming mode based on the number of access points managed.

Referring to fig. 3, a roaming method of a controller operating in a first roaming mode in an embodiment of the present application, where fig. 3 is a schematic flowchart of a wireless roaming method provided in an embodiment of the present application. The execution subject of the method in fig. 3 may be the controller 100 in fig. 1. As shown in fig. 3, the method includes: s301 to S303.

S301, when the controller operates in the first roaming mode, the controller acquires the received signal strength of each terminal device.

Specifically, when the controller operates in the first roaming mode, each access point acquires the received signal strength RSSI of each terminal device associated with each access point, each access point reports the acquired received signal strength of each terminal device to the controller, and the controller can acquire the information received strength of each terminal device.

In the embodiment of the application, when the controller operates in the first mode, the number of access points controlled by the controller is small, the number of terminal devices associated with the access points is small, the bandwidth of each channel in the access points is sufficient, and the influence of the same channel in which each terminal device competitively connects to the same access point can be ignored, so that when the controller operates in the first roaming mode, the controller controls each access point to be in the same channel, so that the channels to be scanned when each terminal device scans the channels and each access point autonomously scans the channels are small, the time for scanning the channels is saved, and meanwhile, the time for switching the Basic Service Set (BSS) of the same channel is shorter, thereby saving the time of the whole roaming process.

In the embodiment of the application, when the working state of each access point is not good, the controller controls each access point to switch channels collectively, so that the working state of each access point is kept in an optimal state.

In the embodiment of the present application, please refer to fig. 4 for a method for controlling an access point to switch channels by a controller, and fig. 4 is an exemplary diagram of a method for controlling an access point to switch channels by a controller according to an embodiment of the present application. The execution subject of the method in fig. 4 may be the controller 100 in fig. 1, as shown in fig. 4, the method includes: s401 to S403.

S401, when the controller operates in the first roaming mode, the controller acquires channel parameters of each channel in each access point.

Specifically, the controller determines the operating state of the access point according to the channel parameters in the access point, where the channel parameters include, but are not limited to, BSS number, EFF, SR, ChannelLoad, RegPower, and channel occupancy.

In the embodiment of the application, each access point may scan the channel parameter of each channel in each access point at regular time, or when the current data traffic of each access point is small, the channel parameter of each channel in each access is acquired, and the scanned or acquired channel parameter is reported to the controller, so that the controller may acquire the channel parameter of each channel in each access point.

S402, the controller determines a target channel according to the channel parameters of each channel in each access point.

Specifically, the controller determines channels not interfered by the adjacent channel in each channel according to the channel parameters of each channel in each access, and determines the channel with the minimum BSS number as the target channel in the channels not interfered by the adjacent channel in each channel.

In other embodiments, the controller determines channels interfered by adjacent channels in the channels according to the channel parameters of each channel in each access point, and determines the channel with the minimum load amount as the target channel in the channels interfered by the adjacent channels in each channel.

In other embodiments, the controller determines the channel number of each channel according to the channel parameters of each channel in each access point, and determines the channel with the minimum channel number as the target signal.

S403, the controller switches the channels of the access points to target channels.

Specifically, the controller collectively switches the channels of the access points to the target channel, so that the access points can be ensured to be in the optimal working state.

In the embodiment of the application, the controller acquires the total amount of data transmitted between each access point and each terminal device at regular time, namely, network traffic, when the network traffic is high, the controller can temporarily stop channel switching of each access point in order to enable a user to have better user experience, when the network traffic is reduced, channel switching of each access point is performed, the level of the network traffic needs to be specifically judged according to actual conditions, and the embodiment of the application does not limit specific data of the network traffic.

In this embodiment of the application, when the network traffic is high, the controller may stop performing channel switching on each access point within a preset time period.

S302, when the received signal strength of the first target terminal equipment is smaller than or equal to the first roaming threshold, the controller acquires the data transmission rate between each first access point and the first target terminal equipment.

Specifically, the first roaming threshold in this embodiment of the present application is preset, and a specific value of the first roaming threshold needs to be determined according to a specific networking situation, where the first access point in this embodiment of the present application is an access point that is not associated with the first target terminal device.

In the embodiment of the application, one controller associates a plurality of access points, one access point associates a plurality of terminal devices, and when the received signal strength of a first target terminal device in the plurality of terminal devices corresponding to the plurality of access points is less than or equal to a first roaming threshold, it is proved that a network signal is poor when the first target terminal device associates the access point at the moment, and a roaming threshold is reached, so that roaming is required.

When roaming, the controller obtains the data transmission rate between each access point which is not associated with the first target terminal device, namely the first access point and the first target terminal device. The data transmission rate refers to an average amount of data transmitted between each channel of the first access point and the first target terminal device per unit time.

In order to avoid that the terminal device fails roaming when reaching the roaming condition, the controller determines that the first target terminal device fails roaming when reaching the roaming condition but is not associated with the first target access point, and the controller controls the first target terminal device to start roaming again within a first preset interval time.

The controller can rapidly guide the first target terminal device to roam again by using the shorter first preset interval time.

S303, the controller associates the first target terminal device with the first target access point.

Specifically, the first target access point is an access point with the largest transmission rate with the first target terminal device in each first access point.

In this embodiment, the data transmission rates between the access points that are not associated with the first target terminal device and the first target terminal device are multiple, the access point with the highest data transmission rate is selected from the multiple data transmission rates, and the controller guides the first target terminal device to associate with the first target entry point, so that the network signal of the first target terminal device can be recovered, and roaming is completed.

S202, if the first number is larger than the first switching threshold value, the controller switches the controller from the first roaming mode to the second roaming mode.

Specifically, the first switching threshold in the embodiment of the present application is preset, and a specific numerical value of the first switching threshold needs to be determined according to a specific networking situation, and the first switching threshold is not limited in the embodiment of the present application.

In the embodiment of the application, if the number of the access points is greater than the first switching threshold, the number of the terminal devices associated with the access points is large, and when roaming is performed in the first roaming mode, because the access points are in the same channel, the large number of terminal devices compete for the same channel, so that part of the terminal devices cannot obtain good internet surfing experience, and therefore, the controller needs to be switched from the first roaming mode to the second roaming mode.

In the embodiment of the application, the second roaming mode is also referred to as a high-bandwidth mode, and when the controller switches the controller from the first roaming mode to the second roaming mode, the controller controls the access point to switch channels, so that the access point can be associated with more terminal devices and the internet experience of each terminal device is guaranteed.

Referring to fig. 5, fig. 5 is a schematic flowchart illustrating a method for controlling an access point to switch a channel by a controller according to an embodiment of the present disclosure. The execution subject of the method in fig. 5 may be the controller 100 in fig. 1. As shown in fig. 5, the method includes: s501 to S503.

S501, the controller acquires the fifth quantity of the terminal devices associated with each access point.

Specifically, in the embodiment of the present application, the number of terminal devices associated with each access point is referred to as a fifth number.

And S502, the controller determines a fifth number of third target access points smaller than a third preset number, and obtains the load of each channel corresponding to the third target access points.

Specifically, when the first roaming mode is switched to the second roaming mode, in order to enable the access points to associate with more terminal devices and ensure the internet surfing experience of the terminal devices, the controller needs to determine the access points with fewer associated terminal devices in the access points, that is, determine the third target access points whose fifth number is smaller than the third preset number.

The third preset number in the embodiment of the present application is preset, and specific numerical values of the third preset number need to be set according to specific networking conditions.

After the third target access point is determined, in order to further ensure the internet surfing experience of the terminal device, the controller acquires the load of each channel corresponding to the third target access point. The load amount of the channel in the embodiment of the present application is the BSS number or the channel occupancy.

S503, the controller switches the channel of the third target access point to the channel with the minimum load.

Specifically, after the controller obtains the load amount of each channel corresponding to the third target access point, the controller compares the load amounts of the channels to determine the channel with the minimum load amount, and the controller switches the channel of the third target access point to the channel with the minimum load amount.

In this embodiment of the present application, after the controller switches the channel of the third target access point to the channel with the minimum load, the controller roams in the roaming method of the second roaming mode, please refer to fig. 6, where fig. 6 is a schematic flowchart of another wireless roaming method provided in this embodiment of the present application. The execution subject of the method in fig. 6 may be the controller 100 in fig. 1. As shown in fig. 6, the method includes: s601 to S604.

And S601, when the controller operates in the second roaming mode, the controller acquires the received signal strength of each terminal device.

Specifically, when the embodiment of the application operates in the second mode, each access point acquires the received signal strength RSSI of each terminal device associated with each access point, each access point reports the acquired received signal strength of each terminal device to the controller, and the controller can acquire the information received strength of each terminal device.

In the embodiment of the application, when the controller operates in the second roaming mode, the number of access points managed by the controller is large, and the number of terminal devices managed by the access points is also large, in order to ensure that the access points can associate with more terminal devices when the controller operates in the second roaming mode, each access point autonomously selects a channel with the minimum load, and when the working state of each access point in the channel with the minimum load is not good, the controller controls each access point to switch the channel, so that the working state of each access point is in the best state.

In an embodiment of the present application, please refer to fig. 7 for a method for controlling an access point to switch channels when a controller operates in a second roaming mode, where fig. 7 is a schematic flowchart of another method for controlling an access point to switch channels, according to an embodiment of the present application. The execution subject of the method in fig. 7 may be the controller 100 in fig. 1, as shown in fig. 7, the method includes: s701 to S702.

And S701, when the controller operates in the second roaming mode, the controller acquires radio frequency information of each access point and adjacent access points.

Specifically, when the controller operates in the second roaming mode, each access point periodically collects load information and power information of each channel with the neighboring access point, and when each access point collects the information, it collects radio waves transmitted by the neighboring access point to each access point, and the radio waves are electromagnetic waves in a radio frequency band portion, so the load information and the power information of each channel are referred to as radio frequency information in the embodiments of the present application.

After the access points collect the radio frequency information, the radio frequency information is reported to the controller, and the controller can obtain the radio frequency information of each access point and adjacent access points.

S702, the controller respectively adjusts the channels of the access points according to the radio frequency information of the access points and the adjacent access points.

Specifically, after the controller acquires the radio frequency information of each access point and the adjacent access points, the channel of each access point is respectively adjusted according to the radio frequency information and the tuning algorithm, so that the channel of each access point is the optimal channel, reasonable power is reasonably distributed to each access point, and the working state of each access point is ensured to be in the optimal state.

The tuning algorithm in the embodiment of the present application includes a Dynamic Channel Allocation (DCA), a Dynamic Bandwidth Selection (DBS), a Dynamic Frequency band adjustment (DFA), a Transmit Power Control (TPC), and the like, and the type of the tuning algorithm is not limited in the embodiment of the present application.

S602, when the received signal strength of the second target terminal equipment is smaller than or equal to the second roaming threshold, the controller acquires the data transmission rate of each second access point and the second target terminal equipment, the working channel occupancy of each second access point, and the signal difference between the signal strength of the second target terminal equipment and each second access point and the signal strength of the second target terminal equipment and the associated access point.

Specifically, the second roaming threshold is smaller than the first roaming threshold.

In the embodiment of the application, the controller operates in the second roaming mode, the number of access points managed by the controller is large, and the number of terminal devices managed by the access points is large.

And when the controller acquires the signal intensity of each terminal device and determines that the received signal intensity of the second target terminal device is smaller than or equal to a second roaming threshold value, the controller controls the second terminal device to roam. The second target terminal device in this embodiment may be any device that satisfies the roaming condition in each terminal device.

In this embodiment, when the controller controls the second terminal device to roam, the data transmission rate between each second access point and the second target terminal device, the working channel occupancy of each second access point, and the signal difference between the signal strength of the second target terminal device and each second access point and the signal strength of the second target terminal device and the associated access point are obtained.

Specifically, the second access point is an access point that is not associated with the second target terminal device. The data transmission rate in this embodiment refers to an average data amount transmitted between each channel of the second access point and the second target terminal device in a unit time.

The channel occupancy refers to a ratio of a channel bandwidth to a data amount transmitted by the channel in the second access point and the second target terminal device in a unit time.

In this embodiment of the present application, when determining that the second target terminal device reaches the roaming condition but is not associated with the second target access point, the controller proves that the second target terminal device does not want to roam, and the controller controls the second target terminal device to start roaming again outside a second preset interval time, where the second preset interval time is long and needs to be set according to a specific networking situation, and the second preset interval time is not specifically limited in this embodiment of the present application. The specific values of the first preset interval and the second preset interval in the embodiment of the present application are relatively, and the first preset interval is shorter than the second preset interval.

S603, the controller determines a second target access point according to the data transmission rate of the second access point and the terminal equipment, the working channel occupancy rate of each second access point, and the signal difference between the signal strength of the second target terminal equipment and each second access point and the signal strength of the second target terminal equipment and the associated access point.

In this embodiment of the application, after the controller obtains the data transmission rate between each second access point and the second target terminal device, the working channel occupancy of each second access point, and the signal difference between the signal strength of the second target terminal device and each second access point and the signal strength of the second target terminal device and the associated access point, the second access point with the fastest transmission rate, the smallest channel occupancy, and the smallest signal difference is determined as the second target access point.

S604, the controller associates the second target terminal device with the second target access point.

In the embodiment of the present application, the controller associates the second target terminal device with the second target access point, and the terminal device can implement roaming in the second roaming mode.

In the present embodiment, please refer to fig. 8 for another roaming handover method, and fig. 8 is a schematic flowchart of another wireless roaming control method provided in the present embodiment. The execution subject of the method in fig. 8 may be the controller 100 in fig. 1. As shown in fig. 8, the method includes: s801 to S802.

S801, if the first number is smaller than or equal to the first switching threshold value, the controller acquires a second number of terminal devices associated with the access point.

Specifically, if the roaming mode cannot be switched according to the method of S202, the roaming mode may be switched according to the method in the embodiment of the present application.

In the embodiment of the application, when the controller determines that the number of the access points is less than or equal to the first switching threshold, each access point reports the number of the terminal devices associated with the access point in real time, so that the second number of the terminal devices associated with the access point can be obtained.

And S802, if the second quantity is larger than the second switching threshold value, the controller switches the controller from the first roaming mode to the second roaming mode.

Specifically, the second handover threshold in the embodiment of the present application is preset, and a specific numerical value of the second handover threshold is set according to a specific networking condition.

In the embodiments of the present application, the roaming method in the first roaming mode, the channel switching method, the roaming method in the second roaming mode, and the channel switching method have been described in the above embodiments, and are not described herein again.

In the present embodiment, please refer to fig. 9 for another roaming handover method, and fig. 9 is a schematic flowchart of another wireless roaming control method provided in the present embodiment. The execution subject of the method in fig. 9 may be the controller 100 in fig. 1. As shown in fig. 9, the method includes: s901 to S903.

S901, if the second quantity is less than or equal to the second switching threshold, the controller obtains the working channel occupancy of each access point and the packet loss rate of each terminal device.

Specifically, if the roaming mode cannot be switched according to the methods of S202 and S801, the roaming mode may be switched according to the method in the embodiment of the present application.

In the embodiment of the application, each access point reports the working channel occupancy of the access point, the packet loss rate and the packet retransmission rate of each terminal device to the controller in real time, and the controller can obtain the working channel occupancy of each access point, the packet loss rate and the packet retransmission rate of each terminal device.

In the embodiment of the present application, the packet loss rate of the terminal device refers to a ratio between a difference between data transmitted by the access point to the terminal device and data received by the terminal device, and data transmitted by the access point to the terminal device.

The packet loss rate of the terminal device in the embodiment of the present application refers to a ratio of a retransmission data packet transmitted to the terminal device by the access point to a total data packet transmitted to the terminal device by the access point.

In the embodiment of the application, when the access point transmits the data packet to the terminal equipment, the retransmission timer is started, the preset retransmission time is set in the timer, and when the preset retransmission time is exceeded, the terminal equipment does not receive the data packet, and the access point retransmits the data packet.

S902, the controller determines a target access point with a channel occupancy rate greater than a preset occupancy rate and/or determines a target terminal device with a packet loss rate greater than a preset packet loss rate.

Specifically, the preset occupancy and the preset packet loss rate are preset, and specific values of the preset occupancy and the preset packet loss rate need to be specifically set according to specific networking conditions.

Illustratively, one controller manages 10 access points, and if the working channel occupancy of 7 access points among the 10 access points is greater than the preset occupancy, the 7 access points are called target access points.

Each access point in 10 access points is associated with 15 terminal devices respectively, and if the packet loss rate of 10 terminal devices in each access point is greater than the preset packet loss rate, the 100 terminal devices become target terminal devices.

And S903, when the third number corresponding to the target access point is larger than the first preset number and/or the fourth number corresponding to the target terminal device is larger than the second preset number, the controller switches the first roaming mode of the controller into the second roaming mode.

Specifically, the first preset number and the second preset number are set in advance, specific numerical values of the first preset number and the second preset number need to be determined according to specific networking conditions, and the numerical values of the first preset number and the second preset number are not limited in the embodiment of the application.

For example, in the embodiments of the present application, the number of target access points is referred to as a third number, and the number of target terminal devices is referred to as a fourth number.

In the embodiment of the present application, the method for the controller to switch from the second roaming mode to the first roaming mode includes:

when the controller operates in the second roaming mode, if the first number is less than or equal to the first switching threshold, the second number is less than or equal to the second switching threshold, the third number corresponding to the target access point is less than or equal to the first preset number, and the fourth number corresponding to the target terminal device is less than or equal to the second preset number, the controller switches the controller from the second roaming mode to the first roaming mode.

In other embodiments, when the controller operates in the second roaming mode, if the first number is less than or equal to the first handover threshold in the first time range, the second number is less than or equal to the second handover threshold in the second time range, the third number corresponding to the target access point is less than or equal to the first preset number, and the fourth number corresponding to the target terminal device is less than or equal to the second preset number, the controller switches the controller from the second roaming mode to the first roaming mode.

The first time range and the second time range in the embodiment of the present application need to be set according to a specific network configuration situation, and specific numerical values of the first time range and the second time range are not limited in the embodiment of the present application.

In the embodiment of the present application, when the controller is switched from the second roaming mode to the first roaming mode, the channel needs to be switched, and the method for switching the channel is the same as the method in fig. 4, and is not described herein again.

In summary, in the technical solution of the present application, when the controller operates in the first roaming mode, a first number of access points managed by the controller is obtained; if the first number is larger than a first switching threshold value, switching the controller from the first roaming mode to a second roaming mode; if the first number is smaller than or equal to the first switching threshold value, acquiring a second number of terminal devices associated with the access point; and if the second quantity is larger than a second switching threshold value, switching the controller from the first roaming mode to the second roaming mode. The controller can be determined to operate in the first roaming mode or the second roaming mode according to the first number of the access points and the second number of the terminal devices, different roaming modes can be selected according to different scenes, and configuration of a user is not needed.

It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

Referring to fig. 10, fig. 10 is a schematic structural diagram of a wireless roaming control device according to an embodiment of the present application, where the device includes:

a first obtaining module 101 is configured to obtain a first number of access points managed by a controller when the controller operates in a first roaming mode.

The first switching module 102 is configured to switch the controller from the first roaming mode to the second roaming mode if the first number is greater than a first switching threshold.

A second obtaining module 103, configured to obtain a second number of terminal devices associated with the access point if the first number is smaller than or equal to the first handover threshold.

The second switching module 104 is configured to switch the controller from the first roaming mode to the second roaming mode if the second number is greater than the second switching threshold.

The device also includes:

a third obtaining module 105, configured to obtain, if the second number is smaller than or equal to the second handover threshold, a working channel occupancy of each access point and a packet loss rate of each terminal device.

The first determining module 106 is configured to determine a target access point whose channel occupancy is greater than a preset occupancy, and/or determine a target terminal device whose packet loss rate is greater than a preset packet loss rate.

A third switching module 107, configured to switch the AC from the first roaming mode to the second roaming mode when the third number corresponding to the target access point is greater than the first preset number and/or the fourth number corresponding to the target terminal device is greater than the second preset number.

The first obtaining module 101 is further configured to obtain the received signal strength of each terminal device when the controller operates in the first roaming mode; when the received signal strength of the first target terminal equipment is smaller than or equal to a first roaming threshold value, acquiring the data transmission rate between each first access point and the first target terminal equipment, wherein the first access point is an access point which is not associated with the first target terminal equipment; and associating the first target terminal equipment with the first target access point, wherein the first target access point is the access point with the maximum transmission rate between the first target terminal equipment and each first access point.

A first obtaining module 101, configured to obtain a channel parameter of each channel in each access point when the controller operates in the first roaming mode; determining a target channel according to the channel parameters of each channel in each access point; and switching the channel of each access point to a target channel.

A second obtaining module 103, configured to obtain the received signal strength of each terminal device when the controller operates in the second roaming mode; when the received signal strength of the second target terminal equipment is smaller than or equal to a second roaming threshold, acquiring data transmission rates of each second access point and the second target terminal equipment, the working channel occupancy rate of each second access point and a signal difference value between the signal strength of the second target terminal equipment and each second access point and the signal strength of the second target terminal equipment and the signal strength of the associated access point, wherein the second roaming threshold is smaller than the first roaming threshold, and the second access point is an access point which is not associated with the second target terminal equipment;

determining a second target access point according to the data transmission rate of the second access point and the terminal equipment, the working channel occupancy rate of each second access point and the signal difference value between the signal intensity of the second target terminal equipment and each second access point and the signal intensity of the second target terminal equipment and the associated access point; and associating the second target terminal equipment with the second target access point.

The second obtaining module 103 is further configured to obtain radio frequency information of each access point and an adjacent access point when the controller operates in the second roaming mode; and respectively adjusting the channel of each access point according to the radio frequency information of each access point and the adjacent access points.

The device also comprises:

a fourth obtaining module 108, configured to obtain a fifth number of terminal devices associated with each access point.

The second determining module 109 is configured to determine the fifth number of third target access points that is smaller than the third preset number, and obtain a load amount of each channel corresponding to the third target access point.

A fourth switching module 1010, configured to switch the channel of the third target access point to a channel with a minimum load.

It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules, so as to perform all or part of the functions described above. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

As shown in fig. 11, an electronic device 200 according to an embodiment of the present application further includes a memory 21, a processor 22, and a computer program 23 stored in the memory 21 and executable on the processor 22, where the processor 22 implements the wireless roaming control method according to the foregoing embodiments when executing the computer program 23.

The Processor 22 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory 21 may be an internal storage unit of the electronic device 200. The memory 21 may also be an external storage device of the electronic device 200, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like, provided on the electronic device 200. Further, the memory 21 may also include both an internal storage unit and an external storage device of the electronic apparatus 200. The memory 21 is used for storing computer programs and other programs and data required by the electronic device 200. The memory 21 may also be used to temporarily store data that has been output or is to be output.

The embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the wireless roaming control method of the foregoing embodiments is implemented.

The embodiment of the present application provides a computer program product, which when running on a mobile terminal, enables the mobile terminal to implement the wireless roaming control method of the above embodiments when executed.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow in the method of the embodiments described above can be implemented by a computer program, which can be stored in a computer readable storage medium and can implement the steps of the embodiments of the methods described above when the computer program is executed by a processor. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable storage medium may include at least: any entity or device capable of carrying computer program code to a photographing apparatus/terminal apparatus, a recording medium, computer memory, read-only memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunication signals, and software distribution medium. Such as a usb-disk, a removable hard disk, a magnetic or optical disk, etc. In certain jurisdictions, computer-readable storage media may not be an electrical carrier signal or a telecommunications signal in accordance with legislative and proprietary practices.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiments of the present application.

The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.

Claims

1. A method for wireless roaming control, the method comprising:

2. The method of claim 1, further comprising:

3. The method of claim 1, further comprising:

4. The method of claim 1, wherein the operating channel of each of the access points is the same, the method further comprising:

and switching the channel of each access point to the target channel.

5. The method of claim 2, further comprising:

6. The method of claim 1, wherein the operating channel of each of the access points is different, the method further comprising:

7. The method of claim 1, wherein after the switching the first roaming mode to the second roaming mode, further comprising:

acquiring a fifth number of terminal devices associated with each access point;

8. The method of claim 2, further comprising:

when the controller operates in the second roaming mode, if the first number is less than or equal to the first handover threshold, the second number is less than or equal to the second handover threshold, the third number corresponding to the target access point is less than or equal to the first preset number, and the fourth number corresponding to the target terminal device is less than or equal to the second preset number, the controller is switched from the second roaming mode to the first roaming mode.

9. A wireless roaming control apparatus, characterized in that the apparatus comprises:

10. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, the processor implementing the wireless roaming control method of any one of claims 1 to 8 when executing the computer program.