WO2023124835A1

WO2023124835A1 - Channel switching method and apparatus, and device and computer-readable storage medium

Info

Publication number: WO2023124835A1
Application number: PCT/CN2022/136991
Authority: WO
Inventors: 王祥河
Original assignee: 深圳创维数字技术有限公司
Priority date: 2021-12-28
Filing date: 2022-12-06
Publication date: 2023-07-06
Also published as: CN114096003A

Abstract

The present application belongs to the technical field of wireless communications. Disclosed are a channel switching method and apparatus, and a device and a computer-readable storage medium. The channel switching method comprises: acquiring an initial channel of a wireless device, and acquiring preset channels to be scanned; switching the initial channel to a target channel in said preset channels, and performing channel scanning on the target channel within a preset scanning time, so as to obtain channel information of said preset channel; and re-switching the target channel to the initial channel.

Description

Channel switching method, device, equipment and computer-readable storage medium

This application claims priority to a Chinese patent application with application number 202111638850.0 filed on December 28, 2021, the entire contents of which are incorporated herein by reference.

technical field

The present application relates to the technical field of wireless communication, and in particular to a channel switching method, device, equipment and computer-readable storage medium.

Background technique

With the rapid popularization of wireless device applications, the interference of working channels such as 5G and 2.4G is ubiquitous. Similar wireless routers using the same or overlapping channels will cause channel congestion and affect the quality of wireless links. In order to avoid channel overlap Automatic channel selection is an important measure to reduce channel congestion. Automatic channel selection detects the distribution of wireless channels around when the wireless device is started, and selects the best channel to work. Currently, automatic channel selection needs to be disconnected when performing channel scanning. All client devices connected to the wireless device, resulting in the problem that the client device is often dropped during automatic channel selection.

technical problem

The main purpose of the present application is to provide a channel switching method, device, equipment and computer-readable storage medium, aiming at solving the technical problem that the user terminal equipment is disconnected when automatic channel selection is performed for channel scanning.

technical solution

In order to achieve the above purpose, the present application provides a channel switching method, the channel switching method comprising:

Obtain the initial channel of the wireless device, and obtain the preset channel to be scanned;

Switching the initial channel to a target channel in the preset channel to be scanned, and performing channel scanning on the target channel within a preset scan time, to obtain channel information of the preset channel to be scanned;

re-switching the target channel to the initial channel;

outputting the channel information based on the initial channel, and performing channel switching according to the channel information.

In one embodiment, before the step of switching the initial channel to the target channel in the preset channels to be scanned, it includes:

If there are multiple preset channels to be scanned, then determine other channels to be scanned that have not been switched in all the preset channels to be scanned;

If there are multiple other channels to be scanned, one of the other channels to be scanned is selected as the target channel.

In an embodiment, the step of switching channels according to the channel information includes:

Counting the channel information of each channel to be scanned, and obtaining the number of service set identifiers in the channel information of each channel to be scanned and the signal strength corresponding to the service set identifier;

Determine an optimal channel among the channels to be scanned according to the number and the signal strength, and perform channel switching according to the optimal channel.

In an embodiment, the step of switching channels according to the optimal channel includes:

Feedback the optimal channel to all UEs, and switch the initial channel to the optimal channel.

In one embodiment, before the step of performing channel scanning on the preset channel to be scanned within the preset scan time, it includes:

Obtain the time interval and number of sending probe packets sent by the client device;

The product of the time interval and the number of sending times is used as the preset scanning time.

In one embodiment, before the step of acquiring a preset channel to be scanned includes:

Detecting whether the state of the initial channel is a congestion state;

If the state of the initial channel is a congestion state, then detecting whether there is channel switching on the initial channel within a preset switching time;

If there is no channel switching on the initial channel within the preset switching time, the step of: acquiring a preset channel to be scanned is performed.

In one embodiment, the step of detecting whether the state of the initial channel is a congestion state includes:

Acquiring the received signal strength, packet loss rate, packet retransmission times and physical interface rate of the initial channel;

Detecting whether the state of the initial channel is a congestion state according to the received signal strength indication, packet loss rate, packet retransmission times, and physical interface rate.

In addition, in order to achieve the above purpose, the present application also provides a channel switching device, which includes:

A channel acquisition module, configured to acquire the initial channel of the wireless device, and acquire a preset channel to be scanned;

A channel scanning module, configured to switch the initial channel to a target channel in the preset channel to be scanned, and perform channel scanning on the target channel within the preset scan time, to obtain the channel of the preset channel to be scanned channel information;

a channel scanning module, configured to re-switch the target channel to the initial channel;

A channel switching module, configured to output the channel information based on the initial channel, and perform channel switching according to the channel information.

In addition, in order to achieve the above object, the present application also provides a channel switching device, the channel switching device includes a memory, a processor, and a channel switching program stored in the memory and operable on the processor, the When the above-mentioned channel switching program is executed by the processor, the steps of the above-mentioned channel switching method are realized.

In addition, in order to achieve the above object, the present application also provides a computer-readable storage medium, on which a channel switching program is stored, and when the channel switching program is executed by a processor, the above-mentioned channel switching method is implemented. A step of.

Beneficial effect

The present application provides a channel switching method, device, device, and computer-readable storage medium. By obtaining the initial channel of the wireless device and obtaining the preset channel to be scanned, the initial channel is switched to the target channel in the preset channel to be scanned. And scan the target channel within the preset scan time to obtain the channel information of the preset channel to be scanned, switch the target channel back to the original channel, output the channel information based on the initial channel, and perform channel switching according to the channel information. Perform channel scanning on the preset channel to be scanned within a set time, obtain the channel information of the preset channel to be scanned, switch back to the initial channel, output reply channel information based on the initial channel, and perform channel switching according to the channel information. The channel scanning time of the scanning channel, switch back to the initial channel after the scanning is completed, and reply the channel information through the initial channel, avoiding that due to the long channel scanning time, the user end device cannot receive the response signal for a long time, causing the user end device to actively shut down In this way, the technical effect that the client equipment will not be dropped during the channel scanning process is realized.

Description of drawings

Fig. 1 is a schematic structural diagram of a device in a hardware operating environment involved in an embodiment of the present application;

FIG. 2 is a schematic flow chart of the first embodiment of the channel switching method of the present application;

FIG. 3 is a schematic diagram of a channel switching process involved in the solution of the embodiment of the present application;

FIG. 4 is a schematic diagram of the device structure of the channel switching device of the present application.

The realization, functional features and advantages of the present application will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Embodiments of the present invention

The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

Referring to FIG. 1 , FIG. 1 is a schematic diagram of the device structure of the hardware operating environment involved in the solution of the embodiment of the present application.

The device in this embodiment of the present application may be a terminal device such as a PC (personal computer, personal computer), a portable computer, or a server.

As shown in Figure 1, the channel switching device may include: a processor 1001, such as a CPU (Central Processing Unit, central processing unit), communication bus 1002, user interface 1003, network interface 1004, memory 1005. Wherein, the communication bus 1002 is used to realize connection and communication between these components. The user interface 1003 may include a display screen (Display) and 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. Optionally, the network interface 1004 may include a standard wired interface and a wireless interface (such as Wireless-Fidelity (Wireless-Fidelity, WI-FI). The memory 1005 may be a high-speed random access memory (Random Access Memory, RAM) memory, or It may be a stable non-volatile memory (Non-Volatile Memory, NVM), such as a disk memory. Optionally, the memory 1005 may also be a storage device independent of the aforementioned processor 1001 .

In one embodiment, the screen projection control device may also include an RF (Radio Frequency, radio frequency) circuit, a sensor, an audio circuit, a WiFi module; an input unit, such as a display screen, a touch screen; an optional network interface except WiFi in the wireless interface , bluetooth, probes, etc.

Those skilled in the art can understand that the structure shown in FIG. 1 does not constitute a limitation on the device, and may include more or less components than shown in the figure, or combine some components, or arrange different components.

As shown in FIG. 1 , the memory 1005 as a computer storage medium may include an operating system, a network communication module, a user interface module, and a channel switching program.

In the device shown in Figure 1, the network interface 1004 is mainly used to connect to the background server and perform data communication with the background server; the user interface 1003 is mainly used to connect to the client (client) and perform data communication with the client; and the processor 1001 can be used to call the screen projection control program stored in memory 1005, and perform the following operations:

re-switching the target channel to the initial channel;

Based on the above hardware structure, various embodiments of the channel switching method of the present application are proposed.

An embodiment of the present application provides a channel switching method. Referring to FIG. 2 , FIG. 2 is a schematic flowchart of a first embodiment of the channel switching method of the present application.

In this embodiment, the channel switching method includes:

Step S10, obtaining the initial channel of the wireless device, and obtaining a preset channel to be scanned;

At present, there are many restrictions on automatic channel selection. For example, automatic channel selection mostly only works during the startup phase of wireless devices. It takes a long time to scan channels during the startup process of wireless devices, which affects the startup time and user experience of wireless devices. Therefore, in this embodiment, channel scanning is performed after the wireless device is turned on, which can reduce the time for starting the wireless device and improve customer experience.

In this embodiment, a channel is also referred to as a channel or a frequency band, and is a data signal transmission channel using a wireless signal as a transmission carrier. Obtain the initial channel of the wireless device, and obtain the preset channel to be scanned. The initial channel can be the current working channel after the wireless device is turned on, or it can be the optimal channel switched after the wireless device is turned on. The preset channel to be scanned is the preset Channels to be scanned, for example, the 2.4G frequency band is divided into 13 channels, and China adopts European/ETSI (European Telecommunications Standards Institute, European Telecommunications Standards Institute) standard uses 1-13 channels. In this embodiment, a preset channel scan list can be obtained. The preset channel scan list includes multiple channels, such as channels 1-13, and preset channels to be scanned It is other channels in the preset channel scan list except the initial channel. The wireless devices in this embodiment include but are not limited to wireless devices such as 5G, 2.4G or WiFi devices, as long as there are optional frequency ranges, the devices need to perform frequency switching.

Step S20, switching the initial channel to a target channel in the preset channels to be scanned, and performing channel scanning on the target channel within a preset scan time to obtain channel information of the preset channel to be scanned;

Step S30, re-switching the target channel to the initial channel;

Step S40, outputting the channel information based on the initial channel, and performing channel switching according to the channel information.

In this embodiment, when the state of the initial channel is a congested state, channel scanning is performed on the preset channel to be scanned to reselect an optimal channel, specifically: switching the initial channel to the preset channel to be scanned The target channel, and scan the target channel within the preset scan time to obtain the channel information of the target channel, end the channel scan within the preset scan time, and switch the target channel to the initial channel again, and then based on the initial channel Output the channel information, that is, reply a probe response frame based on the initial channel to the user equipment connected to the current wireless device, wherein the preset scanning channel can be one or more, and when the preset scanning channel is one, the preset Assuming that the scan channel is used as the target channel, the probe response frame in this embodiment can be a Probe Response message to respond to the probe message of the user equipment end, so as to avoid the situation that the user equipment end actively goes offline due to not receiving a response for a long time.

As another embodiment, a timer can be set to start counting when switching to the target channel, and to count the channel information of the target channel. When the preset scan time is reached, switch the target channel to the initial channel again, and reply the channel based on the initial channel information.

In this embodiment, by obtaining the initial channel of the wireless device and obtaining the preset channel to be scanned, switching the initial channel to the target channel in the preset channel to be scanned, and performing channel scanning on the target channel within the preset scan time, Obtain the channel information of the target channel, re-switch the target channel to the initial channel, output the channel information based on the initial channel, and perform channel switching according to the channel information. In this embodiment, by limiting the channel scanning time of the target channel, switch again after the scan is completed To the initial channel, and reply the channel information through the initial channel, avoiding the phenomenon that the user end device cannot receive the response signal for a long time due to the long channel scanning time, which causes the user end device to actively disconnect, thus realizing the process of channel scanning Among them, the technical effect that the user terminal device will not be disconnected, compared with the prior art that performs channel scanning during the startup process of the wireless device and affects the startup time, this embodiment performs channel scanning after the wireless device is turned on, which can reduce the startup time of the wireless device. Time to improve customer experience.

Further, the above step S20, before the step of switching the initial channel to the target channel in the preset channels to be scanned, further includes:

Step A, if there are multiple preset channels to be scanned, then determine other channels to be scanned that have not undergone switching operations among all the preset channels to be scanned;

Step B, if there are multiple other channels to be scanned, selecting one of the other channels to be scanned as the target channel.

In this embodiment, if there are multiple preset channels to be scanned, other channels to be scanned that have not been switched in all channels to be scanned are determined, and if there are multiple other channels to be scanned, each other channel to be scanned is selected. One of the other channels to be scanned serves as the target channel. The switching operation is to switch the initial channel to the channel to be scanned for channel scanning. After switching the preset channel to be scanned each time to perform channel scanning, continue to perform the switching operation on the preset channels to be scanned. Scanning channels are switched operations for channel scanning. As another implementation, the preset channel scan list can be obtained. If the channel scan list includes multiple preset channels to be scanned, the order of each preset channel to be scanned can be determined, such as determining the first preset to be scanned. The channel is the target scanning channel, and each preset channel to be scanned is used as the target scanning channel in sequence according to the order, and the steps are followed in turn: switch the initial channel to the target channel, and perform channel scanning on the target channel within the preset scanning time to obtain the target channel channel information, and re-switch the target channel to the initial channel, that is, to scan each preset channel to be scanned in turn, and switch to the initial channel after the scanning of each preset channel to be scanned is completed, and pass through the initial channel in turn Reply the channel information of each preset channel to be scanned, that is, perform a complete channel scanning step for each preset channel to be scanned, "switch from the initial channel to the preset channel to be scanned, and then switch to the initial channel after scanning", for example , the preset channels to be scanned include channel 1, channel 2, channel 3, and channel 4. At this time, if the initial channel is determined to be channel 1, then the target scanning channel in the channels to be scanned is determined to be 2, and the initial channel 1 is switched to the target channel 2. Perform a channel scan on the target channel 2 within the preset scan time to obtain channel information of the target channel 2. And after the scanning is completed, switch the target channel 2 to the initial channel 1, and then determine the target channel as channel 3, switch the initial channel 1 to channel 3, perform channel scanning on channel 3 within the preset scanning time, and obtain the channel 3 channel information. And switch channel 3 to the initial channel 1 after the scan is completed, and so on to perform channel scan on channel 4. Wherein, the determination of the target scanning channel may be determined sequentially, may also be determined randomly, or may be in other ways, and its function is to perform channel scanning on all preset channels to be scanned. In this embodiment, it is also possible to detect whether all preset channels to be scanned have been scanned, and if the scan is not completed, switch to the next channel to be scanned, and repeat the channel scanning operation.

In this embodiment, compared to performing channel scanning on all channels during the power-on process of the wireless device, or disconnecting all client devices during channel scanning, in this embodiment, after the wireless device is powered on, Scan the preset channels to be scanned in sequence, switch to the initial channel after scanning each preset channel to be scanned, and respond to the user terminal device through the initial channel, without disconnecting the client device, and further control the Preset the scanning time of the channel to be scanned, which avoids the problem of active disconnection of the user equipment, and provides a channel scanning mechanism that does not disconnect the user equipment. This mechanism greatly expands the application scenarios of automatic channels and improves product reliability. user experience.

Further, in the above step S40, the step of performing channel switching according to the channel information includes:

Step D, counting the channel information of each of the preset channels to be scanned, and obtaining the number of service set identifiers in the channel information of each of the preset to-be-scanned channels and the signal strength corresponding to the service set identifiers;

Step E, determining an optimal channel among the preset channels to be scanned according to the number and the signal strength, and performing channel switching according to the optimal channel.

In this embodiment, after channel scanning is performed on a plurality of preset channels to be scanned, the channel information corresponding to each preset channel to be scanned is returned from the initial channel, and the channel information of each preset channel to be scanned is counted, and each Preset the number of service set identifiers (SSID information) in the channel information of the channel to be scanned, and obtain the signal strength (RSSI) corresponding to each service set identifier. It can be understood that a wireless device corresponds to a unique service set identifier, that is, statistics Preset the number of wireless devices in each channel to be scanned and the corresponding signal strength of each wireless device, and obtain the preset to be scanned according to the number of wireless devices in each preset channel to be scanned and the corresponding signal strength of each wireless device The best channel in the channel, and switch the channel according to the best channel.

Specifically, the number of service set identifiers of each preset channel to be scanned can be added to the signal strength corresponding to the service set identifier to obtain a signal interference value. The larger the signal interference value, the greater the corresponding preset channel to be scanned. The greater the degree of congestion, the smaller the corresponding signal interference value is, indicating that the congestion degree of the preset channel to be scanned is smaller. At this time, by comparison, the optimal channel among the preset channels to be scanned can be obtained, and the optimal channel is the signal The channel with the smallest interference value is then switched according to the optimal channel. In this embodiment, the optimal channel with the best quality can be quickly and accurately calculated through the above method.

Further, in the above step E, the step of switching channels according to the optimal channel includes:

Step e1, feeding back the optimal channel to all UEs, and switching the initial channel to the optimal channel.

In this embodiment, all the client devices mentioned above are all the client devices connected to the wireless device. After obtaining the optimal channel among the preset channels to be scanned, the optimal channel is fed back to the current All client devices of the wireless device, that is, notify all client devices connected to the wireless device that the current initial channel is about to be switched to the optimal channel, and the client receives and records the optimal channel, and then switches the initial channel to the optimal channel , so that all client devices use the optimal channel to communicate with AP (Access Point, wireless access point) devices.

Usually, when performing automatic channel selection, all client devices are forced to go offline during channel scanning, and all client devices are also forced to go offline during channel switching, so that all client devices can re-scan to wireless devices, and users Therefore, in this embodiment, before channel switching, the channel of the optimal channel is notified to all user end devices, so that the user switch uses the optimal channel to communicate with the AP device. In this way, it is not necessary to force all client devices to go offline, thereby ensuring that the connected client devices will not go offline during the channel switching process.

Further, in the above step S20, the step of performing channel scanning on the target channel within the preset scanning time includes:

Step F, obtaining the time interval and the number of sending times of the detection message sent by the client device;

Step G, taking the product of the time interval and the sending times as the preset scanning time.

In this embodiment, because the protocol of the client device stipulates that if the client device does not receive a response within the preset time or the preset number of times, the client device will actively disconnect. Therefore, in this embodiment, Obtain the time interval and the number of sending times of the detection message sent by the user terminal equipment, and use the product of the time interval and the number of sending times as the preset scan time, and perform channel scanning on the target channel within the preset scan time. It can be understood that the preset scan time is The scanning time is set as the time when the client device is offline, so it is necessary to complete the channel scanning operation on the target channel before the client device is offline. The scanning steps are the same as scanning the target channel within the preset scanning time.

As shown in Figure 3, the current channel is detected. At this time, the current channel is the initial channel, and it is judged whether the current channel is congested. If the current channel is relatively congested, it is further judged whether the current channel has just been switched (within the preset switching time). If The current channel has not been switched just now, indicating that the channel switching operation can be performed, then obtain the channel scan list, switch to the corresponding channel in the channel scan list for scanning, and end the scan before the client is disconnected. The end of the scan means the end of the scan within the preset scan time, and then switch to the working channel (initial channel) to reply to the client detection message, and then check whether all channels are scanned. If all channels are scanned, the congestion of each channel is calculated by algorithm According to the congestion situation of each channel, the channel with the best quality is selected, that is, the optimal channel is selected, and the client is notified of the channel to be switched, so that the client uses the new optimal channel to communicate with the AP. After the channel with the best quality is selected, there is no need to switch channels within the preset time, so the wireless device enters the sleep time, and also enters the preset sleep time when the current channel is not congested, avoiding frequent switching.

In this embodiment, a limited scan time is calculated through the time interval and the number of sending probe messages sent by the user terminal equipment to control the scan time for channel scanning of the preset channel to be scanned, and switch to the initial channel immediately after the scan is completed. Channel, through the initial channel to respond to the detection message of the user equipment, to achieve the effect of not dropping the line during the scanning process.

Based on the above first embodiment, the second embodiment of the channel switching method of the present application is proposed. In this embodiment, in the above step S10, before the step of obtaining the preset channel to be scanned, it also includes:

Step H, detecting whether the state of the initial channel is a congestion state;

Step I, if the state of the initial channel is congested, then detecting whether there is channel switching on the initial channel within the preset switching time.

Step J, if there is no channel switching on the initial channel within the preset switching time, then perform the step of acquiring a preset channel to be scanned.

In this embodiment, before the step of obtaining the preset channel to be scanned, it is detected whether the state of the initial channel is a congested state. If the state of the initial channel is a congested state, it means that the current initial channel is relatively congested, and channel scanning is required to Re-scan the optimal channel for channel switching, and detect whether there is channel switching in the initial channel within the preset switching time, wherein the preset switching time is the switching frequency of the channel, if there is no channel switching in the initial channel within the preset switching time, then It means that the initial channel has not been switched for a period of time, and then the subsequent steps of obtaining the preset channel to be scanned are performed. In this embodiment, when the state of the initial channel is a congested state, the switching frequency of the initial channel is further detected, and when the initial channel has been switched within the preset switching time, channel switching is not performed, thereby avoiding frequent Channel switching.

In this embodiment, after obtaining the initial channel of the wireless device, it detects whether the state of the initial channel is a congested state. If the state of the initial channel is not congested, the wireless device sleeps. After the wireless device sleeps for a preset sleep time, it detects the current state. In the actual environment, the surrounding wireless environment may change during the working process of the router, causing strong wireless interference. At this time, it is necessary to re-switch the channel, so the preset cycle time can be set for the current The initial channel is detected. In this embodiment, before acquiring the preset channel to be scanned, the congestion state of the initial channel is detected, and if the initial channel is not congested, channel switching is not performed, thereby avoiding frequent channel switching.

Further, in the above step H, if the step of detecting whether the state of the initial channel is a congestion state includes:

Step h1, obtaining the received signal strength, packet loss rate, packet retransmission times and physical interface rate of the initial channel;

Step h2, according to the received signal strength indication, packet loss rate, packet retransmission times and physical interface rate, detect whether the state of the initial channel is a congestion state.

In this embodiment, a timer can be set to regularly detect the state of the initial channel, obtain the received signal strength (Received Signal Strength Indication, RSSI), packet loss rate, packet retransmission times, and physical interface rate of the initial channel, according to the received Signal strength indicator, packet loss rate, packet retransmission times and physical interface rate to detect whether the initial channel state is congested state, where the packet loss rate (Loss Tolerance or Packet Loss Rate) refers to the number of lost data packets in the test accounted for The ratio of sending data groups. In this embodiment, received signal strength (RSSI), packet loss rate, packet retransmission times, and physical interface rate can reflect the initial channel congestion. The greater the packet loss rate, the greater the packet retransmission rate. If the number of times increases and the negotiation rate is unstable, it means that the state of the initial channel is congested, and channel scanning is started, and other parameters in the initial channel that can reflect the congestion of the initial channel can also be detected.

In the channel scanning process of this embodiment, the user terminal device can be kept offline, but within a very short preset scanning time, the communication strength between the user terminal and the router is weak, which may affect the user's online experience, so If the initial channel has already been switched within the preset switching time, channel switching is not performed, which avoids frequent channel switching, further improves customer experience, greatly improves the application range of automatic channel selection, and enables the product to have Better user experience, maximize product performance.

The present application also provides a channel switching device, as shown in Figure 4, the channel switching device includes: a channel acquisition module A10, used to obtain the initial channel of the wireless device, and obtain a preset channel to be scanned; a channel scanning module A20, used to The initial channel is switched to the target channel in the preset channel to be scanned, and channel scanning is performed on the target channel within the preset scan time to obtain channel information of the preset channel to be scanned; channel scanning module A20 , further configured to re-switch the target channel to the initial channel; a channel switching module A30, configured to output the channel information based on the initial channel, and perform channel switching according to the channel information. The specific embodiments of the channel switching device of the present application are basically the same as the above embodiments of the channel switching method, and will not be repeated here.

The present application also provides a channel switching device, wherein the channel switching device includes a memory, a processor, and a channel switching program stored in the memory and operable on the processor, and the channel switching program is executed by The processor implements the steps of the channel switching method described in any one of the above embodiments when executed. The specific embodiments of the channel switching device of the present application are basically the same as the above embodiments of the channel switching method, and will not be repeated here.

The present application also provides a computer-readable storage medium, where a channel switching program is stored on the computer-readable storage medium, and when the channel switching program is executed by a processor, the channel switching method as described in any one of the above embodiments is implemented A step of. The specific embodiments of the computer-readable storage medium of the present application are basically the same as the above embodiments of the channel switching method, and will not be repeated here.

It can be understood that, in the description of this specification, referring to the terms "one embodiment", "another embodiment", "other embodiments", or "the first embodiment to the Nth embodiment" means that A specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

It should be noted that, as used herein, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or system comprising a set of elements includes not only those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or system. Without further limitations, an element defined by the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, article or system comprising that element.

The serial numbers of the above embodiments of the present application are for description only, and do not represent the advantages and disadvantages of the embodiments.

Through the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is better implementation. Based on such an understanding, the technical solution of the present application can be embodied in the form of a software product in essence or the part that contributes to the prior art, and the computer software product is stored in a storage medium (such as ROM/RAM) as described above. , magnetic disk, optical disk), including several instructions to make a terminal device (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) execute the methods described in various embodiments of the present application.

The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structures or equivalent process transformations made by using the description of the application and the accompanying drawings are directly or indirectly used in other related technical fields. , are all included in the patent protection scope of the present application in the same way.

Claims

A channel switching method, wherein the channel switching method comprises the steps of:

Obtain the initial channel of the wireless device, and obtain the preset channel to be scanned;

switching the initial channel to a target channel in the preset channels to be scanned, and performing channel scanning on the target channel within a preset scan time to obtain channel information of the target channel;

re-switching the target channel to the initial channel;

outputting the channel information based on the initial channel, and performing channel switching according to the channel information.
The channel switching method according to claim 1, wherein, before the step of switching the initial channel to the target channel in the preset channel to be scanned, the steps include:

If there are multiple preset channels to be scanned, then determine other channels to be scanned that have not been switched in all the preset channels to be scanned;

If there are multiple other channels to be scanned, one of the other channels to be scanned is selected as the target channel.
The channel switching method according to claim 2, wherein the step of performing channel switching according to the channel information comprises:

Counting the channel information of each preset channel to be scanned, and acquiring the number of service set identifiers in the channel information of each preset channel to be scanned and the signal strength corresponding to the service set identifier;

Determine an optimal channel among the preset channels to be scanned according to the number and the signal strength, and perform channel switching according to the optimal channel.
The channel switching method according to claim 3, wherein the step of performing channel switching according to the optimal channel comprises:

Feedback the optimal channel to all UEs, and switch the initial channel to the optimal channel.
The channel switching method according to claim 1, wherein, before the step of performing channel scanning on the target channel within the preset scanning time, comprising:

Obtain the time interval and number of sending probe packets sent by the client device;

The product of the time interval and the number of sending times is used as the preset scanning time.
The channel switching method according to claim 1, wherein the step of acquiring a preset channel to be scanned comprises:

Detecting whether the state of the initial channel is a congestion state;

If the state of the initial channel is a congestion state, then detecting whether there is channel switching on the initial channel within a preset switching time;

If there is no channel switching on the initial channel within the preset switching time, the step of: acquiring a preset channel to be scanned is performed.
The channel switching method according to claim 6, wherein the step of detecting whether the state of the initial channel is a congestion state comprises:

Acquiring the received signal strength, packet loss rate, packet retransmission times and physical interface rate of the initial channel;

Detecting whether the state of the initial channel is a congestion state according to the received signal strength indication, packet loss rate, packet retransmission times, and physical interface rate.
A channel switching device, wherein the channel switching device includes:

A channel acquisition module, configured to acquire the initial channel of the wireless device, and acquire a preset channel to be scanned;

A channel scanning module, configured to switch the initial channel to a target channel in the preset channel to be scanned, and perform channel scanning on the target channel within the preset scan time, to obtain the channel of the preset channel to be scanned channel information;

a channel scanning module, configured to re-switch the target channel to the initial channel;

A channel switching module, configured to output the channel information based on the initial channel, and perform channel switching according to the channel information.
A channel switching device, wherein the channel switching device includes a memory, a processor, and a channel switching program stored on the memory and operable on the processor, the channel switching program is configured to implement the The steps of the channel switching method described in any one of 1 to 7 are required.
A computer-readable storage medium, wherein a channel switching program is stored on the computer-readable storage medium, and when the channel switching program is executed by a processor, the channel switching according to any one of claims 1 to 7 is realized method steps.