WO2023050358A1

WO2023050358A1 - Communication channel switching method and apparatus, control device, communication system, and storage medium

Info

Publication number: WO2023050358A1
Application number: PCT/CN2021/122312
Authority: WO
Inventors: 孟凡淦; 凌兴峰; 朱国宇
Original assignee: 深圳市大疆创新科技有限公司
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2023-04-06

Abstract

A communication channel switching method and apparatus, a control device, a communication system, and a storage medium. The method comprises: displaying a channel option, the channel option comprising a DFS channel option carrying a first mark and a DFS channel option carrying a second mark, and the first mark being different from the second mark; if a selection operation of a user on the DFS channel option carrying the first mark is detected, using, as a target channel, a DFS channel corresponding to the DFS channel option carrying the first mark selected in the selection operation, and switching a current communication channel of a control device to the target channel; and if a selection operation of the user on the DFS channel option carrying the second mark is detected, performing radar signal detection at a preset duration on a DFS channel corresponding to the DFS channel option carrying the second mark selected in the selection operation. In this way, the user can conveniently and intuitively learn which channels can be directly used for switching, and thus can conveniently and seamlessly switch the current communication channel to a certain extent, and the switching time consumption is reduced.

Description

Communication channel switching method, device, control device, communication system and storage medium

technical field

The present application relates to the technical field of communication, and in particular to a communication channel switching method, device, control device, communication system and storage medium.

Background technique

In order to obtain a better communication experience, communication may be performed based on channels in a Dynamic Frequency Selection (DFS) frequency band. The DFS frequency band refers to 5.25GHz-5.35GHz and 5.47GHz-5.725GHz. Since the DFS frequency band is a shared frequency band for non-radar equipment and radar equipment. If you use this frequency band, you need to conduct radar detection during use and use to avoid radar equipment.

In related technologies, when switching is required, a channel is first selected from the DFS frequency band, and then a radar detection is performed on the channel for a long time, and the communication connection can be switched to the channel only after the detection is passed. In this way, it will take a long time to switch, and it is difficult to realize seamless switching.

Contents of the invention

The present application provides a communication channel switching method, device, control device, communication system and storage medium, which can realize seamless switching to a certain extent and reduce switching time consumption.

In the first aspect, the embodiment of the present application provides a communication channel switching method, which is used to switch the communication channel between the control device and the controlled device in the communication system. The method includes:

Displaying channel options, the channel options include DFS channel options carrying a first mark and DFS channel options carrying a second mark, the first mark being different from the second mark;

If it is detected that the user selects the DFS channel option carrying the first mark, the DFS channel corresponding to the DFS channel option carrying the first mark selected by the selection operation is used as the target channel, and the control device switch the current communication channel to the target channel;

If the user's selection operation on the DFS channel option carrying the second mark is detected, radar signal detection of a preset duration is performed on the DFS channel corresponding to the DFS channel option carrying the second mark selected by the selection operation.

In the second aspect, the embodiment of the present application provides a communication channel switching device, the device is used to switch the communication channel between the control device and the controlled device in the communication system, and the device includes a memory, a processor, and a touch screen;

The memory is used to store program codes;

The touch screen is used for displaying;

The processor invokes the program code, and when the program code is executed, performs the following operations:

Controlling the touch screen to display channel options, the channel options include DFS channel options carrying a first mark and DFS channel options carrying a second mark, the first mark being different from the second mark;

In a third aspect, an embodiment of the present application provides a control device, where the device includes a memory, a processor, and a touch screen;

The memory is used to store program codes;

The touch screen is used for displaying;

In the fourth aspect, the embodiment of the present application provides a control device, where at least two detection channels for detecting radar signals are deployed in the control device, if the current communication channel between the control device and the controlled device is a DFS channel , one of the detection channels of the at least two detection channels is used for real-time detection of the current communication channel to determine whether the current communication channel is occupied by radar signals, and the other detection channels in the at least two detection channels The channel is used to detect radar signals on other DFS channels other than the current communication channel, so as to determine whether other DFS channels other than the current communication channel are occupied by radar signals.

In the fifth aspect, the embodiment of the present application provides a communication system. At least two detection channels for detecting radar signals are deployed in the communication system. If the current communication channel of the communication system is a DFS channel, the One of the at least two detection channels is used for real-time detection of the current communication channel to determine whether the current communication channel is occupied by radar signals, and the other detection channels of the at least two detection channels are used for detecting Radar signal detection is performed on other DFS channels other than the current communication channel to determine whether other DFS channels other than the current communication channel are occupied by radar signals, wherein the at least two detection channels are deployed in the communication system in the same device, or distributed in different devices in the communication system.

In a sixth aspect, the embodiment of the present application provides a computer-readable storage medium, including instructions, which, when run on a computer, cause the computer to execute the communication channel switching method described above.

In a seventh aspect, the embodiment of the present application provides a computer program product containing instructions, and when the instructions are run on a computer, the computer is made to perform the above communication channel switching method.

In the embodiment of the present application, the communication channel switching method provided in the embodiment of the present application displays channel options, and the channel options include DFS channel options with a first mark and DFS channel options with a second mark, and the first marks are different. on the second mark. If it is detected that the user selects the DFS channel option carrying the first mark, the DFS channel corresponding to the DFS channel option carrying the first mark selected by the selection operation is used as the target channel, and the current communication channel of the control device is switched to the target channel . If the user's selection operation on the DFS channel option carrying the second mark is detected, radar signal detection of a preset duration is performed on the DFS channel corresponding to the DFS channel option carrying the second mark selected by the selection operation. In this way, by displaying the DFS channel options with the first mark and the DFS channel options with the second mark, the DFS channels that have passed the radar signal detection of the preset duration and the DFS channels that need to be detected can be directly switched. The differential display enables the user to conveniently and intuitively know which channels can be directly used for switching, so that to a certain extent, it is convenient for the user to seamlessly switch the current communication channel and reduce the time-consuming switching.

Description of drawings

FIG. 1 is a flow chart of the steps of a method for switching communication channels provided in an embodiment of the present application;

Fig. 2a is a schematic diagram of a channel option provided by an embodiment of the present application;

Fig. 2b is a schematic diagram of another channel option provided by the embodiment of the present application;

Fig. 3 is a schematic diagram of a display interface provided by an embodiment of the present application;

FIG. 4 is a schematic diagram of another display interface provided by the embodiment of the present application;

Fig. 5 is a schematic diagram of another display interface provided by the embodiment of the present application;

Fig. 6 is a schematic diagram of another display interface provided by the embodiment of the present application;

Fig. 7 is a schematic diagram of a detection channel provided by the embodiment of the present application;

FIG. 8 is a block diagram of a communication channel switching device provided in an embodiment of the present application;

FIG. 9 is a block diagram of a computing processing device provided by an embodiment of the present application;

Fig. 10 is a block diagram of a portable or fixed storage unit provided by an embodiment of the present application.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are 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.

First, an application scenario involved in the embodiment of the present application is described. During the use of unmanned vehicles, unmanned aerial vehicles or handheld gimbal devices, unmanned vehicles, unmanned aerial vehicles or handheld gimbal devices are used as controlled devices, and users often need to perform data transmission between the control device and the controlled device , for example, to transmit images, videos, control commands, etc. Based on this, it is necessary to establish a wireless communication connection between the control device and the controlled device. When establishing a communication connection, it is necessary to select a communication channel to be used for the communication connection. In a related technique, a DFS channel can be used as a communication channel. However, the DFS channel needs to avoid radar equipment during use. When the currently used DFS channel is occupied by radar signals, it is necessary to switch to other communication channels as soon as possible.

To this end, the embodiment of the present application provides a communication channel switching method. The method will be described in detail below.

Figure 1 is a flow chart of the steps of a method for switching communication channels provided by an embodiment of the present application, which can be used to switch communication channels between a control device and a controlled device in a communication system, as shown in Figure 1, the method Can include:

Step 101. Display channel options, where the channel options include DFS channel options with a first mark and DFS channel options with a second mark, where the first mark is different from the second mark.

In this embodiment of the present application, a channel option may correspond to a channel, specifically, a DFS channel option may correspond to a DFS channel. When a communication channel needs to be switched, the user may perform a selection operation on the displayed channel options to select the channel option and perform communication channel switching. The specific form of the channel option can be set according to actual needs. For example, the channel option can be graphics and/or text, which is not limited in this embodiment of the present application.

Further, the first flag may be used to indicate that the DFS channel corresponding to the DFS channel option has been detected by a radar signal of a preset duration, and can be directly switched to use at present. Wherein, the preset duration may be a detection duration required for judging whether the DFS channel is occupied by radar signals, for example, the preset duration may be 60 seconds. If the radar signal detection passes the preset duration, it indicates that the DFS channel is not occupied by radar signals. If the radar signal detection of the preset duration is not passed, it indicates that the DFS channel is occupied by radar signals. If the radar signal detection of the preset duration is not performed/completed, it indicates that it is uncertain whether the DFS channel is occupied by radar signals. In the embodiment of the present application, a radar signal detection of a preset duration may be performed on a DFS channel in the DFS frequency band in advance, so as to determine whether the DFS channel passes the radar signal detection of a preset duration. Correspondingly, if the DFS channel is detected by a radar signal with a preset duration, then when channel selection is displayed, the channel option corresponding to the DFS channel may be displayed in the form of carrying the first mark. The second flag can be used to indicate that the DFS channel corresponding to the DFS channel option has not yet performed/completed radar signal detection, and needs to perform/complete radar signal detection for a preset period of time before using it. Of course, the second mark can also only indicate that the DFS channel corresponding to the DFS channel option has not yet undergone radar signal detection, and the DFS channel that has not yet completed radar signal detection can be represented by displaying the DFS channel option carrying other marks, which is not limited in the present application.

The specific forms of the first mark and the second mark can be set according to actual needs. For example, the first mark and the second mark can be color marks of different colors, for example, the first mark can be green, and the second mark can be blue . For another example, the first mark may be the same or similar color as the user operation interface, and the second mark may be blue. For example, a color mark similar to the user interface indicates that the corresponding DFS channel has passed the radar signal detection, and a blue mark indicates that the radar signal detection has not been performed/completed.

In an implementation manner, the size/level of the channel option may also represent the signal quality of the channel. For example, Figure 2a is a schematic diagram of a channel option provided by the embodiment of the present application. As shown in Figure 2a, the channel option can be displayed in the form of a bar graph, and a rectangular column in Figure 2a can be regarded as a channel option, or a rectangular The bar and the number below the rectangular bar can be considered a channel option. The specific height of the rectangular column can represent the signal quality of the channel corresponding to the channel option. The number below the rectangular column is the identification of the channel corresponding to the channel option. The higher the rectangular column is, the better the signal quality of the channel corresponding to the channel option is. Assuming that the channels corresponding to the channel options identified as "1" and "6" have passed the radar signal detection of the preset duration, then the rectangular columns corresponding to "1" and "6" can be set to green, and the other rectangular columns can be set to blue. Or, in another implementation of the embodiment of the present application, the channel options may only be the numbers marked under the rectangular column. Correspondingly, the marks "1" and "6" may be displayed in green, and the other marks may be Displayed in blue. On this basis, the color of the rectangular column in the channel option can be determined according to the signal quality of the channel corresponding to each channel option. For example, when the signal quality of the channel corresponding to the channel option is greater than a preset threshold, that is, when the signal is good, the rectangular bar corresponding to the channel option may be set to green. Otherwise, set the rectangular bar corresponding to the channel option to red.

Figure 2b is a schematic diagram of another channel option provided by the embodiment of the present application. As shown in Figure 2b, the rectangular column is divided into two parts, the first part carries the first mark or the second mark, and the second part carries the Quality color marking. The height of the second part can represent the signal quality of the channel corresponding to the channel option, and the higher the second part, the better the signal quality of the channel corresponding to the channel option. For example, in Figure 2b, the first part is not marked with slashes, and the second part is marked with slashes. The first part carries the same or similar color mark as the user interface and the second part carries a red mark to represent the corresponding DFS. The channel has passed the radar signal detection and the signal quality is poor. The first part carries the same or similar color mark as the user interface and the second part carries the green mark to indicate that the corresponding DFS channel has passed the radar signal detection and the signal quality is good. The first part carries a blue mark and the second part carries a red mark indicating that radar signal detection is not done/not completed and the signal quality is poor, and the first part carries a blue mark and the second part carries a green mark indicating that it is not done/not done The radar signal is detected and the signal quality is good.

It should be noted that the detection channel for detecting radar signals and the detection channel for detecting signal quality are independent channels, and can detect whether the channel is occupied by radar signals and the signal quality of the channel respectively.

In one embodiment, in an initial state, all DFS channels are not detected. For example, in the initial state, the DFS channel options corresponding to all DFS channels carry the second mark, which will be updated to the first mark after passing the radar detection. The DFS channel option corresponding to the DFS channel occupied by the signal.

Alternatively, the first mark and the second mark can also be word marks with different characters, for example, the first mark can be the word "detected", and the second mark can be "to be detected". Alternatively, the first mark and the second mark may be marks of different shapes, for example, the first mark may be a circle, and the second mark may be a triangle, which is not limited in this embodiment of the present application.

Step 102: If the user's selection operation on the DFS channel option carrying the first mark is detected, the DFS channel corresponding to the DFS channel option carrying the first mark selected by the selection operation is taken as the target channel, and the selected The current communication channel of the control device is switched to the target channel.

In the embodiment of the present application, the specific operation form of the selection operation can be set according to actual needs. For example, the selection operation can be a click operation, a double-click operation, a long-press operation, and the like. If the user's selection operation on the DFS channel option carrying the first mark is detected, since the DFS channel corresponding to the DFS channel option carrying the first mark has been detected by the radar signal of the preset duration, the DFS channel carrying the first mark can be used The DFS channel corresponding to the channel option is used as the target channel, and the current communication channel is directly switched to the target channel, so as to realize seamless switching.

Step 103: If it is detected that the user selects the DFS channel option carrying the second mark, perform a preset duration radar on the DFS channel corresponding to the DFS channel option carrying the second mark selected by the selection operation Signal Detection.

If the user's selection operation on the DFS channel option carrying the second mark is detected, radar signal detection with a preset duration can be performed on the DFS channel corresponding to the DFS channel option carrying the second mark to determine the DFS channel option with the second mark Whether the corresponding DFS channel is occupied by radar signals.

In summary, the communication channel switching method provided by the embodiment of the present application displays channel options, and the channel options include DFS channel options with a first mark and DFS channel options with a second mark, and the first mark is different from the first mark. Two marks. If it is detected that the user selects the DFS channel option carrying the first mark, the DFS channel corresponding to the DFS channel option carrying the first mark selected by the selection operation is used as the target channel, and the current communication channel of the control device is switched to the target channel . If the user's selection operation on the DFS channel option carrying the second mark is detected, radar signal detection of a preset duration is performed on the DFS channel corresponding to the DFS channel option carrying the second mark selected by the selection operation. In this way, by displaying the DFS channel options with the first mark and the DFS channel options with the second mark, the DFS channels that have passed the radar signal detection of the preset duration and the DFS channels that need to be detected can be directly switched. The differential display enables the user to conveniently and intuitively know which channels can be directly used for switching, so that to a certain extent, it is convenient for the user to seamlessly switch the current communication channel and reduce the time-consuming switching.

Optionally, the channel options in this embodiment of the present application may include ISM channel options and DFS channel options corresponding to DFS channels that are not detected to be occupied by radar signals. Wherein, the ISM channel option may correspond to represent an ISM channel belonging to an ISM frequency band, and the ISM frequency band refers to 2.4GHz˜2.483GHz&5.725GHz˜5.85GHz. In the embodiment of the present application, the channel options further include ISM channel options, which can provide users with richer choices, thereby expanding the range of choices for users. At the same time, since the ISM channel does not need to perform radar signal detection during connection, by further displaying ISM channel options, the feasibility of seamless switching can be further improved. Further, the DFS channels that are not detected to be occupied by radar signals may include the aforementioned DFS channel options carrying the first flag and the DFS channel options carrying the second flag. Due to regulations, DFS channels that detect radar signals are not allowed to be used within 30 minutes. Therefore, in the embodiment of this application, the DFS channel options corresponding to the DFS channels occupied by no detected radar signals can be avoided. The DFS channel occupied by the radar signal is detected again, thus wasting processing resources.

Optionally, the ISM channel option in this embodiment of the present application may carry a third flag. Correspondingly, the following steps may also be performed in the embodiment of the present application:

Step S21: If the user's selection operation on the channel option carrying the third mark is detected, the ISM channel corresponding to the channel option carrying the third mark selected by the selection operation is taken as the target channel, and the control The current communication channel of the device is switched to the target channel, and the third mark is the same as or different from the first mark.

Since the ISM frequency band does not belong to the frequency band shared with the radar equipment, when the user selects the channel option carrying the third mark in the selection operation, the ISM channel corresponding to the channel option carrying the third mark can be directly used as the target channel, and Directly switch the current communication channel to the target channel, so as to realize seamless switching and reduce switching time. Wherein, the third mark may be a color mark, a character mark or a graphic mark. In an implementation manner, the third mark may be the same as the first mark, for example, both the third mark and the first mark may be green, and when the channel options are displayed, the digital identification page representing the ISM channel options may be set to green . In this way, by setting the third mark to be the same as the first mark, the channel options corresponding to all channels that can be switched seamlessly are marked in the same way, so that the user can conveniently realize seamless switching without distinguishing the specific type of channel. Of course, the third mark may also be different from the first mark. In this way, by using different marks, it is convenient for the user to select the channel type to be switched according to actual needs when performing seamless switching.

Optionally, in this embodiment of the present application, a fourth mark may also be set for the channel option corresponding to the switched current communication channel, and the fourth mark is used to indicate that the channel represented by the channel option is the current communication channel, The fourth marking is different from the first marking, the second marking and the third marking. Wherein, the third mark may be a color mark, a character mark or a graphic mark. By setting the fourth mark for the channel option corresponding to the current communication channel, the user can easily know the currently used communication channel. Or, it is also possible to display the identification of the current communication channel on the display interface, which is not limited by the present application.

Optionally, in the embodiment of the present application, when the user's selection operation on the DFS channel option carrying the second flag is detected, the following operation may also be performed: display the selection operation selected for the selection operation and carry the second flag. The DFS channel corresponding to the DFS channel option marked with the second mark is the detection progress of radar signal detection for a preset duration. Specifically, the current detection progress can be detected in real time, and then the detection progress can be displayed in a preset form. When determining the detection progress, the ratio between the current detected duration and the preset duration can be calculated, and the ratio can represent the current detection progress. In the embodiment of the present application, by displaying the detection progress of the radar signal detection for a preset duration on the DFS channel corresponding to the DFS channel option selected by the selection operation and carrying the second mark, the interactivity with the user can be increased, bringing users To provide a richer interactive experience, so that users can easily know the current detection progress.

Further, the detection progress can be displayed in numerical form, or can also be displayed in the form of a progress bar, or can be displayed in the form of a numerical value combined with a progress bar. As an example, FIG. 3 is a schematic diagram of a display interface provided by an embodiment of the present application. As shown in FIG. 3 , the current detection progress "85%" is displayed on the display interface. FIG. 4 is a schematic diagram of another display interface provided by the embodiment of the present application. As shown in FIG. 4 , a progress bar representing the current detection progress is displayed on the display interface. It should be noted that in actual application scenarios, other information may also be displayed on the display interface, for example, displaying downlink bandwidth, current channel, channel mode, and so on. FIG. 5 is a schematic diagram of another display interface provided by the embodiment of the present application. As shown in FIG. 5 , the display interface displays downlink bandwidth options, channel mode options, and current channel related information. Among them, the dotted box indicates the option that the option is selected.

It should be noted that, in the embodiment of the present application, when it is necessary to perform radar detection with a preset duration on the selected DFS channel, confirmation information may be displayed to the user first. As an example, assuming that radar detection of a preset duration is required on the selected DFS channel 11, FIG. 6 is a schematic diagram of another display interface provided by the embodiment of the present application. As shown in FIG. 6, a confirmation window is displayed on the display interface. Furthermore, if the user chooses to confirm, the user can be prompted while the detection progress is being detected, and the detection process cannot be canceled, and the user needs to wait for a complete preset time to ensure the smooth progress of the detection process.

Optionally, after the DFS channel corresponding to the DFS channel option carrying the second mark selected by the selection operation is subjected to radar signal detection for a preset duration, the following steps may also be performed:

Step S31: If the radar signal detection of the preset duration is passed, the DFS channel corresponding to the DFS channel option carrying the second mark selected by the selection operation is used as the target channel, and the current communication channel of the control device is set to Switch to said target channel.

Step S32, if the radar signal detection of the preset duration is not passed, then output prompt information to prompt the user to select a channel again.

If the DFS channel corresponding to the DFS channel option carrying the second mark selected by the operation is detected by the radar signal of the preset duration, it can be explained that the DFS channel is not occupied by the radar signal, and accordingly, the current communication channel can be switched to the DFS channel. On the contrary, if the radar signal detection of the preset duration is not passed, it may indicate that the DFS channel is occupied by the radar signal, and the DFS channel cannot be used currently. It should be noted that, in the embodiment of the present application, after the countdown with a preset duration ends, a pop-up window may be used to prompt the user that the connection has been successfully connected or that the connection has failed. At the same time, it is also possible to use a preset flag, for example, a specific value of the "Result" flag to indicate whether the detection is completed, that is, whether a result is detected. And after the detection is completed, based on the value of the "Result" flag to indicate whether it is occupied by the radar signal.

Further, in an implementation manner, prompt information may be output to prompt the user to select a channel again. Wherein, the specific form of the prompt information can be set according to actual needs. For example, the prompt signal can be a text prompt "This channel has been occupied by radar, please select again".

In the embodiment of the present application, after the radar signal detection of the preset duration, the DFS channel corresponding to the DFS channel option carrying the second mark selected by the selection operation is used as the target channel, and the current communication channel of the control device is switched to the target channel. In this way, it can be ensured that the DFS channel with better communication performance is used for communication after switching, so that the communication effect can be ensured to a certain extent. Further, in the case that the detection of the radar signal for a preset duration is not passed, a prompt message is output to prompt the user to select a channel again. In this way, to a certain extent, the user can reselect in time, thereby ensuring the switching efficiency of communication channels.

Optionally, in an implementation manner, if the current communication channel belongs to the DFS channel, and it is detected that the current communication channel is occupied by radar signals, this embodiment of the present application may also include the following steps:

Step S41 , selecting a channel whose signal quality value is greater than a preset threshold from other channels other than the current communication channel as a candidate channel.

In practical application scenarios, in order to ensure that radar devices can be avoided in time, in the process of using DFS channels for communication, it is necessary to continuously detect radar signals on the currently used DFS channels. If it is detected that the current communication channel is occupied by radar signals, the current communication channel needs to be switched. Correspondingly, in the embodiment of the present application, when the current communication channel is occupied by radar signals, a channel whose signal quality value is greater than a preset threshold may be automatically selected from other channels other than the current communication channel as a candidate channel. The preset threshold may be set according to actual requirements. For example, the preset threshold may be a minimum signal quality value required to ensure normal communication, which is not limited in this embodiment of the present application. Specifically, signal quality values of DFS channels and/or ISM channels other than the current communication channel may be acquired. Then, the channel whose signal quality value is greater than the preset threshold is used as a candidate channel.

Step S42: If the candidate channels include a DFS channel, switch the current communication channel to a DFS channel with the highest signal quality value included in the candidate channels.

Step S43: If the candidate channels do not include the DFS channel, switch the current communication channel to the channel with the highest signal quality value among the candidate channels.

In the embodiment of the present application, the candidate channels whose signal quality value is greater than the preset threshold may include DFS channels or may not include DFS channels. Correspondingly, when the candidate channels include the DFS channel, the current communication channel can be switched to the DFS channel with the highest signal quality value included in the candidate channels, so that the communication quality can be ensured while ensuring continuous use DFS channel, thus ensuring communication efficiency. Further, if the candidate channels do not include the DFS channel, the current communication channel may be directly switched to the channel with the highest signal quality value among the candidate channels, so as to ensure the communication quality after switching.

Optionally, in an implementation manner, if the current communication channel is occupied by radar signals, the following operation may also be performed in the embodiment of the present application: select the channel with the highest signal quality value from other channels other than the current communication channel As a target channel, switching the current communication channel to the target channel. In this way, there is no need to perform additional operations such as selecting candidate channels, judging whether the candidate channels include DFS channels, etc., and directly selecting the channel with the highest signal quality value as the target channel, which can improve the efficiency of ensuring the target channel to a certain extent, thereby improving switching efficiency. It should be noted that, in this embodiment of the application, when the current communication channel belongs to the DFS channel, and it is detected that there is multi-device interference on the current communication channel, and the communication quality of the current communication channel is poor, based on this operation or the above Steps S41 to S43 are automatically switched to avoid the problem of mutual interference.

It should be noted that, in the embodiment of the present application, when the communication channel needs to be switched, a DFS channel different from the current communication channel can be directly selected from the DFS channels corresponding to the DFS channel option carrying the first mark as the target channel, and the current The communication channel is switched to the target channel. For example, assuming that the current communication channel is channel 3, then when the signal quality of channel 3 deteriorates, or when a radar signal is detected on channel 3 and needs to be avoided by frequency hopping, channel 1 is directly used as the target channel, and the current communication channel is switched to channel 1. Based on this usage strategy, it is possible to avoid the communication system from working on the ISM channel to a certain extent, and ensure that the communication system can continuously use the DFS channel. Alternatively, when there is currently no DFS channel corresponding to the DFS channel option carrying the first flag, it may automatically switch to the ISM channel, so as to ensure that the communication system can communicate normally.

Optionally, each step in the above-mentioned communication channel switching method may be performed by the control device. Correspondingly, in the embodiment of the present application, the following operations may also be performed: sending a channel switching signal to the controlled device in the communication system, so that the controlled device switches the current communication channel to the target channel. In the embodiment of the present application, the channel switching signal may be a pre-agreed signal between the control device and the controlled device, and the channel switching signal may carry identification information of a target channel to be switched by the control device. Correspondingly, the channel switching signal may be used to instruct the controlled device to switch the current communication channel to the channel indicated by the identification information carried in the channel switching signal, that is, to switch to the target channel. Further, the radar detection function may be called "master", and the radar detection may be performed by any device or multiple devices in the communication system that have the radar detection function. In the embodiment of this application, the control device can have the radar detection function, then the control device can be called "master", the controlled device can be called "slave", the slave can be controlled by the master, and the master determines the device in the communication system Communication channel used between. Correspondingly, after the control device switches the current communication channel to the target channel, by correspondingly sending a channel switching signal, the controlled device can be controlled to also switch the current communication channel to the target channel, thereby conveniently completing the switching between the control device and the target channel in the communication system. Communication channel between controlled devices.

Further, at least two detection channels for detecting radar signals may be deployed in the above communication system. Wherein, the specific number of detection channels may be set according to actual requirements, for example, the specific number of detection channels may be two. In the embodiment of the present application, by deploying multiple detection channels, multiple DFS channels can be detected simultaneously, thereby ensuring detection efficiency. Optionally, the above at least two detection channels may both be deployed in the same device in the communication system. For example, both may be deployed in the control device. Fig. 7 is a schematic diagram of a detection channel provided by the embodiment of the present application. As shown in Fig. 7, two detection channels: detection channel 1 and detection channel 2 can be set on the communication main chip of the same device. In practical applications, each detection channel can be configured with its own corresponding digital front end (RXDFE), radio frequency front end and antenna. Wherein, the antenna can be used to receive signals of all frequency bands, and the signals on the channel required by the detection channel can be obtained through the radio frequency front end and the digital front end. The same antenna can provide signals for different detection channels, that is, the RF front-end of one detection channel can receive signals received by multiple antennas, thereby enhancing the signal and improving the detection quality. Further, the above at least two detection channels may also be distributed and deployed in different devices in the communication system. For example, part of the detection channels can be deployed on the control device, and another part of the detection channels can be deployed on the controlled device. In this way, the detection channel can be flexibly deployed according to actual requirements, thereby improving the flexibility of the implementation manner.

Correspondingly, if the current communication channel belongs to the DFS channel, the embodiment of the present application may also include the following steps:

Step S51 , based on one of the at least two detection channels, perform real-time detection on the current communication channel to determine whether the current communication channel is occupied by radar signals.

In this step, one detection channel may be selected from at least two detection channels for real-time detection of the current communication channel, so as to monitor in real time whether the current communication channel is occupied by radar signals, so as to avoid radar equipment in time.

Step S52: Perform radar signal detection on DFS channels other than the current communication channel based on other detection channels of the at least two detection channels, to determine whether other DFS channels other than the current communication channel are occupied by radar signals.

Except for the detection channel used for real-time detection of the current communication channel, other detection channels may be used to perform radar signal detection on other DFS channels other than the current communication channel. Wherein, one other detection channel may correspondingly detect one other DFS channel. In an implementation manner, other DFS channels participating in the detection may be manually selected by the user. For example, signal quality values of each other DFS channel may be displayed for selection by the user. Alternatively, it may also be selected based on a signal quality value. For example, the signal quality of other DFS channels other than the current communication channel may be continuously evaluated, and M DFS channels whose signal quality values are greater than a preset quality value threshold are selected from other DFS channels other than the current communication channel for detection. Wherein, the specific value of M can be set according to actual requirements.

Step S53. In the case that other DFS channels other than the current communication channel are not occupied by radar signals, set the corresponding DFS channel option to carry the first flag.

In this step, if the other DFS channels are not occupied by radar signals, the DFS channel options corresponding to the other DFS channels can be set to carry the first mark, that is, the other DFS channels can be used as directly switchable DFS channels to For the user to choose to use or to use when switching automatically. Further, if other DFS channels other than the current communication channel are occupied by radar signals, other new DFS channels may be selected for detection.

In the embodiment of the present application, based on one of the at least two detection channels, the current communication channel is detected in real time to determine whether the current communication channel is occupied by radar signals. Performing radar signal detection on DFS channels other than the current communication channel based on other detection channels of the at least two detection channels, so as to determine whether other DFS channels other than the current communication channel are occupied by radar signals. In the case that other DFS channels other than the current communication channel are not occupied by radar signals, the corresponding DFS channel option is set to carry the first flag. Since there is less wireless interference in the DFS frequency band and the allowable transmission power is higher, it is more helpful to improve the performance of wireless communication. In the embodiment of the present application, by setting multiple detection channels for channel perception, in the case of using DFS channels for communication, radar signal detection is performed on the currently used DFS channel and radar signal detection is performed on other DFS channels, so that it can be determined in advance The DFS channel that can be directly switched to a certain extent enables users to seamlessly switch the used DFS channel, while continuously and efficiently using the DFS frequency band, reduces switching time, improves switching efficiency, and effectively improves wireless communication performance and user experience. Use experience.

It should be noted that, when the current communication channel is an ISM channel, at least two detection channels can be used for radar signal detection on the DFS channel, or only some of the detection channels can be used to detect radar signals on the DFS channel . If detection is occupied by radar signals, detection may continue on other DFS channels. Further, if a DFS channel that is not occupied by radar signals is detected, it can automatically switch to the DFS channel when the signal quality of the DFS channel is better than that of the current communication channel, or recommend the DFS channel to the user channel, allowing the user to switch manually. In this way, the communication system can be made to work on the DFS channel as much as possible, thereby ensuring communication performance to a certain extent.

Further, the aforementioned preset duration is used as the first preset duration, and DFS channels that have been detected to be occupied by radar signals are not detected within the second preset duration, and the second preset duration is the same as the first preset duration. A preset duration varies. Wherein, the second preset duration may be set according to the average usage duration of the radar device when using the DFS channel, for example, the second preset duration may be 30 minutes. In the embodiment of the present application, for the DFS channels that have been detected to be occupied by radar signals, the detection of the DFS channels that have been detected to be occupied by radar signals is not performed within the second preset time length, which can avoid the detection of DFS channels that are still occupied by radar signals to a certain extent. Occupied DFS channels for detection, waste processing resources, and improve detection efficiency.

The embodiment of the present application also provides a control device. At least two detection channels for detecting radar signals may be deployed in the control device. If the current communication channel between the control device and the controlled device is a DFS channel, the One of the at least two detection channels is used for real-time detection of the current communication channel to determine whether the current communication channel is occupied by radar signals, and the other detection channels of the at least two detection channels are used for Perform radar signal detection on other DFS channels other than the current communication channel to determine whether other DFS channels other than the current communication channel are occupied by radar signals. Compared with the method of only setting a single detection channel, the control device provided in the embodiment of the present application sets at least two detection channels for detecting radar signals, and when the current communication channel is a DFS channel, one of the detection channel pairs is used The current DFS channel is used for radar signal detection and other detection channels are used for radar signal detection of other DFS channels, so that the DFS channel that can be directly switched can be determined in advance, so that users can seamlessly switch the used DFS channel and reduce switching consumption. , improve switching efficiency.

Optionally, for the DFS channels that have been detected to be occupied by radar signals, the at least two detection channels for detecting radar signals do not detect them within a preset time period. The preset duration may be the above-mentioned second preset duration. In this way, to a certain extent, it is possible to avoid the problem of wasting processing resources by detecting the DFS channel still occupied by the radar signal, and improve the detection efficiency.

Optionally, the control device is also used to display channel options, the channel options include DFS channel options with a first mark and DFS channel options with a second mark, the first mark is different from the first mark Two flags, the DFS channel option carries the first flag to indicate that the corresponding DFS channel has passed the radar signal detection of the preset duration, and the DFS channel option carries the second flag to indicate that the corresponding DFS channel has not been preset. Signal Detection. In this way, by displaying the DFS channel options with the first mark and the DFS channel options with the second mark, the DFS channels that have passed the radar signal detection of the preset duration and the DFS channels that need to be detected can be directly switched. The differential display enables the user to conveniently and intuitively know which channels can be directly used for switching, so that to a certain extent, it is convenient for the user to seamlessly switch the current communication channel and reduce the time-consuming switching.

Optionally, the channel options include ISM channel options and DFS channel options corresponding to DFS channels that are not detected to be occupied by radar signals. In this way, the user can be provided with richer choices, thereby expanding the user's optional range, and the problem of wasting processing resources by re-detecting the DFS channel occupied by the previously detected radar signal can be avoided.

Optionally, the controlled device is an unmanned aerial vehicle, an unmanned vehicle or a handheld pan-tilt device. In this way, seamless switching of DFS channels with UAVs, unmanned vehicles or handheld gimbal devices can be easily realized, thereby improving switching efficiency.

An embodiment of the present application also provides a communication system, wherein at least two detection channels for detecting radar signals are deployed in the communication system, and if the current communication channel of the communication system is a DFS channel, the at least two One of the detection channels is used to detect the current communication channel in real time to determine whether the current communication channel is occupied by radar signals, and the other detection channels in the at least two detection channels are used to detect the current communication channel. Radar signal detection is performed on other DFS channels other than the communication channel to determine whether other DFS channels other than the current communication channel are occupied by radar signals, wherein the at least two detection channels are deployed on the same device in the communication system in, or distributed in different devices in the communication system. In the communication system provided by the embodiment of the present application, at least two detection channels for detecting radar signals are set, and when the current communication channel is a DFS channel, use one of the detection channels to detect and use Other detection channels perform radar signal detection on other DFS channels, so that the DFS channels that can be directly switched can be determined in advance, so that users can seamlessly switch the used DFS channels, reduce switching time consumption, and improve switching efficiency.

Fig. 8 is a block diagram of an apparatus for switching communication channels provided by an embodiment of the present application. The apparatus can be used to switch the communication channel between the control device and the controlled device in the communication system. As shown in Fig. 8, the apparatus may include : memory 201, processor 202 and touch screen 203.

The memory 201 is used to store program codes;

The touch screen 203 is used for displaying;

The processor 202 invokes the program code, and when the program code is executed, performs the following operations:

Controlling the touch screen 203 to display channel options, the channel options include DFS channel options carrying a first mark and DFS channel options carrying a second mark, the first mark being different from the second mark;

To sum up, the device for switching communication channels provided by the embodiment of the present application displays channel options, and the channel options include DFS channel options with a first mark and DFS channel options with a second mark, and the first mark is different from the first mark. Two marks. If it is detected that the user selects the DFS channel option carrying the first mark, the DFS channel corresponding to the DFS channel option carrying the first mark selected by the selection operation is used as the target channel, and the current communication channel of the control device is switched to the target channel . If the user's selection operation on the DFS channel option carrying the second mark is detected, radar signal detection of a preset duration is performed on the DFS channel corresponding to the DFS channel option carrying the second mark selected by the selection operation. In this way, by displaying the DFS channel options with the first mark and the DFS channel options with the second mark, the DFS channels that have passed the radar signal detection of the preset duration and the DFS channels that need to be detected can be directly switched. The differential display enables the user to conveniently and intuitively know which channels can be directly used for switching, so that to a certain extent, it is convenient for the user to seamlessly switch the current communication channel and reduce the time-consuming switching.

Optionally, the channel options include ISM channel options and DFS channel options corresponding to DFS channels that are not detected to be occupied by radar signals.

Optionally, the ISM channel option carries a third flag, and the processor 202 is specifically configured to:

If it is detected that the user selects the channel option carrying the third mark, the ISM channel corresponding to the channel option carrying the third mark selected by the selection operation is used as the target channel, and the current channel of the control device is set to The communication channel is switched to the target channel, and the third sign is the same as or different from the first sign.

Optionally, if it is detected that the user selects the DFS channel option carrying the second mark, the processor 202 is further specifically configured to:

Controlling the touch screen to display the detection progress of radar signal detection for a preset duration on the DFS channel corresponding to the DFS channel option selected by the selection operation and carrying the second mark.

Optionally, the processor 202 is also specifically configured to:

If the radar signal detection of the preset duration is passed, the DFS channel corresponding to the DFS channel option carrying the second mark selected by the selection operation is used as the target channel, and the current communication channel of the control device is switched to the selected channel. the target channel;

If the radar signal detection of the preset duration is not passed, a prompt message is output to prompt the user to select a channel again.

Optionally, the processor 202 is also specifically configured to:

Sending a channel switching signal to the controlled device in the communication system, so that the controlled device switches the current communication channel to the target channel.

Optionally, if the current communication channel belongs to a DFS channel, and it is detected that the current communication channel is occupied by a radar signal, the processor 202 is further specifically configured to:

Selecting a channel whose signal quality value is greater than a preset threshold from other channels other than the current communication channel as an alternative channel;

If the candidate channels include a DFS channel, switching the current communication channel to a DFS channel with the highest signal quality value included in the candidate channels;

If the candidate channels do not include the DFS channel, switching the current communication channel to the channel with the highest signal quality value among the candidate channels.

Optionally, if the current communication channel is occupied by radar signals, the processor 202 is further specifically configured to:

Selecting a channel with the highest signal quality value as a target channel from other channels other than the current communication channel, and switching the current communication channel to the target channel.

Optionally, at least two detection channels for detecting radar signals are deployed in the communication system.

Optionally, if the current communication channel belongs to a DFS channel, the processor 202 is further specifically configured to:

Real-time detection of the current communication channel based on one of the at least two detection channels to determine whether the current communication channel is occupied by radar signals;

performing radar signal detection on DFS channels other than the current communication channel based on other detection channels of the at least two detection channels, to determine whether other DFS channels other than the current communication channel are occupied by radar signals;

In the case that other DFS channels other than the current communication channel are not occupied by radar signals, the corresponding DFS channel option is set to carry the first flag.

Optionally, the preset duration is a first preset duration, and the processor 202 is further specifically configured to:

For the DFS channel that has been detected to be occupied by the radar signal, it is not detected within a second preset duration, and the second preset duration is different from the first preset duration.

Optionally, the at least two detection channels are both deployed in the same device in the communication system; or are distributed and deployed in different devices in the communication system.

The operation performed by the above-mentioned device is similar to each corresponding step in the above-mentioned method, and can achieve the same technical effect. To avoid repetition, details are not repeated here.

Furthermore, the embodiment of the present application also provides a computer-readable storage medium, on which a computer program is stored, and when it is run on a computer, the computer can execute each step in the above method, and can achieve the same To avoid repetition, the technical effects will not be repeated here.

Furthermore, the embodiment of the present application also provides a computer program product including instructions, which, when the instructions are run on a computer, cause the computer to execute the above method.

The device embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in One place, or it can be distributed to multiple network elements. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. It can be understood and implemented by those skilled in the art without any creative effort.

The various component embodiments of the present application may be realized in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art should understand that a microprocessor or a digital signal processor may be used in practice to implement some or all functions of some or all components in the computing processing device according to the embodiments of the present application. The present application can also be implemented as an apparatus or apparatus program (eg, computer program and computer program product) for performing a part or all of the methods described herein. Such a program implementing the present application may be stored on a computer-readable medium, or may be in the form of one or more signals. Such a signal may be downloaded from an Internet site, or provided on a carrier signal, or provided in any other form.

For example, FIG. 9 is a block diagram of a computing processing device provided by an embodiment of the present application. As shown in FIG. 9 , FIG. 9 shows a computing processing device that can implement the method according to the present application. The computing processing device conventionally includes a processor 310 and a computer program product or computer readable medium in the form of memory 320 . Memory 320 may be electronic memory such as flash memory, EEPROM (Electrically Erasable Programmable Read Only Memory), EPROM, hard disk, or ROM. The memory 320 has a storage space 330 for program codes for performing any method steps in the methods described above. For example, the storage space 330 for program codes may include respective program codes for respectively implementing various steps in the above methods. These program codes can be read from or written into one or more computer program products. These computer program products comprise program code carriers such as hard disks, compact disks (CDs), memory cards or floppy disks. Such a computer program product is typically a portable or fixed storage unit as described with reference to FIG. 10 . The storage unit may have storage segments, storage spaces, etc. arranged similarly to the memory 320 in the computing processing device of FIG. 9 . The program code can eg be compressed in a suitable form. Typically, the storage unit includes computer readable code, i.e., code readable by, for example, a processor such as 310, which when executed by a computing processing device causes the computing processing device to perform each of the methods described above. step.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other. Reference herein to "one embodiment," "an embodiment," or "one or more embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Additionally, please note that examples of the word "in one embodiment" herein do not necessarily all refer to the same embodiment.

In the description provided herein, numerous specific details are set forth. However, it is understood that the embodiments of the application may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure the understanding of this description.

In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The application can be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In a unit claim enumerating several means, several of these means can be embodied by one and the same item of hardware. The use of the words first, second, and third, etc. does not indicate any order. These words can be interpreted as names.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limiting; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still apply to the foregoing The technical solutions described in the embodiments are modified, or some of the technical features are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the application.

Claims

A method for switching communication channels, characterized in that it is used to switch communication channels between a control device and a controlled device in a communication system, the method comprising:

Displaying channel options, the channel options include DFS channel options carrying a first mark and DFS channel options carrying a second mark, the first mark being different from the second mark;

If it is detected that the user selects the DFS channel option carrying the first mark, the DFS channel corresponding to the DFS channel option carrying the first mark selected by the selection operation is used as the target channel, and the control device switch the current communication channel to the target channel;

If the user's selection operation on the DFS channel option carrying the second mark is detected, radar signal detection of a preset duration is performed on the DFS channel corresponding to the DFS channel option carrying the second mark selected by the selection operation.
The method according to claim 1, wherein the channel options include ISM channel options and DFS channel options corresponding to DFS channels occupied by no detected radar signals.
The method according to claim 2, wherein the ISM channel option carries a third mark, and the method further comprises:

If it is detected that the user selects the channel option carrying the third mark, the ISM channel corresponding to the channel option carrying the third mark selected by the selection operation is used as the target channel, and the current channel of the control device is set to The communication channel is switched to the target channel, and the third sign is the same as or different from the first sign.
The method according to claim 1, wherein if it is detected that the user selects the DFS channel option carrying the second mark, the method further comprises:

Displaying the detection progress of radar signal detection for a preset duration on the DFS channel corresponding to the DFS channel option selected by the selection operation and carrying the second flag.
The method according to claim 1, characterized in that, after performing radar signal detection for a preset duration on the DFS channel corresponding to the DFS channel option carrying the second flag selected by the selection operation, the method further include:

If the radar signal detection of the preset duration is passed, the DFS channel corresponding to the DFS channel option carrying the second mark selected by the selection operation is used as the target channel, and the current communication channel of the control device is switched to the selected channel. the target channel;

If the radar signal detection of the preset duration is not passed, a prompt message is output to prompt the user to select a channel again.
The method according to any one of claims 1-5, wherein the method further comprises:

Sending a channel switching signal to the controlled device in the communication system, so that the controlled device switches the current communication channel to the target channel.
The method according to any one of claims 1-5, wherein if the current communication channel belongs to a DFS channel and it is detected that the current communication channel is occupied by radar signals, the method further comprises:

selecting a channel whose signal quality value is greater than a preset threshold from other channels other than the current communication channel as an alternative channel;

If the candidate channels include a DFS channel, switching the current communication channel to a DFS channel with the highest signal quality value included in the candidate channels;

If the candidate channels do not include the DFS channel, switching the current communication channel to the channel with the highest signal quality value among the candidate channels.
The method according to any one of claims 1-5, wherein if the current communication channel is occupied by radar signals, the method further comprises:

Selecting a channel with the highest signal quality value as a target channel from other channels other than the current communication channel, and switching the current communication channel to the target channel.
The method according to any one of claims 1-5, characterized in that at least two detection channels for detecting radar signals are deployed in the communication system.
The method according to claim 9, wherein if the current communication channel belongs to a DFS channel, the method further comprises:

Real-time detection of the current communication channel based on one of the at least two detection channels to determine whether the current communication channel is occupied by radar signals;

performing radar signal detection on DFS channels other than the current communication channel based on other detection channels of the at least two detection channels, to determine whether other DFS channels other than the current communication channel are occupied by radar signals;

In the case that other DFS channels other than the current communication channel are not occupied by radar signals, the corresponding DFS channel option is set to carry the first mark.
The method according to claim 9, wherein the preset duration is a first preset duration, and the method further comprises:

For the DFS channel that has been detected to be occupied by the radar signal, it is not detected within a second preset duration, and the second preset duration is different from the first preset duration.
The method according to claim 9, characterized in that, the at least two detection channels are both deployed in the same device in the communication system; or are distributed and deployed in different devices in the communication system.
A communication channel switching device, characterized in that the device is used to switch the communication channel between a control device and a controlled device in a communication system, and the device includes a memory, a processor and a touch screen;

The memory is used to store program codes;

The touch screen is used for displaying;

The processor invokes the program code, and when the program code is executed, performs the following operations:

Controlling the touch screen to display channel options, the channel options include DFS channel options carrying a first mark and DFS channel options carrying a second mark, the first mark being different from the second mark;

If it is detected that the user selects the DFS channel option carrying the first mark, the DFS channel corresponding to the DFS channel option carrying the first mark selected by the selection operation is used as the target channel, and the control device switch the current communication channel to the target channel;

If the user's selection operation on the DFS channel option carrying the second mark is detected, radar signal detection of a preset duration is performed on the DFS channel corresponding to the DFS channel option carrying the second mark selected by the selection operation.
The device according to claim 13, wherein the channel options include ISM channel options and DFS channel options corresponding to DFS channels that are not detected to be occupied by radar signals.
The device according to claim 14, wherein the ISM channel option carries a third flag, and the processor is specifically used for:

If it is detected that the user selects the channel option carrying the third mark, the ISM channel corresponding to the channel option carrying the third mark selected by the selection operation is used as the target channel, and the current channel of the control device is set to The communication channel is switched to the target channel, and the third sign is the same as or different from the first sign.
The device according to claim 13, wherein if it is detected that the user selects the DFS channel option carrying the second mark, the processor is further specifically configured to:

Controlling the touch screen to display the detection progress of radar signal detection for a preset duration on the DFS channel corresponding to the DFS channel option selected by the selection operation and carrying the second mark.
The device according to claim 13, wherein the processor is further specifically configured to:

If the radar signal detection of the preset duration is passed, the DFS channel corresponding to the DFS channel option carrying the second mark selected by the selection operation is used as the target channel, and the current communication channel of the control device is switched to the selected channel. the target channel;

If the radar signal detection of the preset duration is not passed, a prompt message is output to prompt the user to select a channel again.
The device according to any one of claims 13-17, wherein the processor is further specifically configured to:

Sending a channel switching signal to the controlled device in the communication system, so that the controlled device switches the current communication channel to the target channel.
The device according to any one of claims 13-17, wherein if the current communication channel belongs to a DFS channel and it is detected that the current communication channel is occupied by radar signals, the processor is further specifically configured to :

selecting a channel whose signal quality value is greater than a preset threshold from other channels other than the current communication channel as an alternative channel;

If the candidate channels include a DFS channel, switching the current communication channel to a DFS channel with the highest signal quality value included in the candidate channels;

If the candidate channels do not include the DFS channel, switching the current communication channel to the channel with the highest signal quality value among the candidate channels.
The device according to any one of claims 13-17, wherein if the current communication channel is occupied by radar signals, the processor is further specifically configured to:

Selecting a channel with the highest signal quality value as a target channel from other channels other than the current communication channel, and switching the current communication channel to the target channel.
The device according to any one of claims 13-17, wherein at least two detection channels for detecting radar signals are deployed in the communication system.
The device according to claim 21, wherein if the current communication channel belongs to a DFS channel, the processor is further specifically configured to:

Real-time detection of the current communication channel based on one of the at least two detection channels to determine whether the current communication channel is occupied by radar signals;

performing radar signal detection on DFS channels other than the current communication channel based on other detection channels of the at least two detection channels, to determine whether other DFS channels other than the current communication channel are occupied by radar signals;

In the case that other DFS channels other than the current communication channel are not occupied by radar signals, the corresponding DFS channel option is set to carry the first flag.
The device according to claim 21, wherein the preset duration is a first preset duration, and the processor is further specifically configured to:

For the DFS channel that has been detected to be occupied by the radar signal, it is not detected within a second preset duration, and the second preset duration is different from the first preset duration.
The apparatus according to claim 21, wherein the at least two detection channels are both deployed in the same device in the communication system; or are distributed and deployed in different devices in the communication system.
A control device, characterized in that the device includes a memory, a processor and a touch screen;

The memory is used to store program codes;

The touch screen is used for displaying;

The processor invokes the program code, and when the program code is executed, performs the following operations:

Controlling the touch screen to display channel options, the channel options including DFS channel options carrying a first mark and DFS channel options carrying a second mark, the first mark being different from the second mark;

If it is detected that the user selects the DFS channel option carrying the first mark, the DFS channel corresponding to the DFS channel option carrying the first mark selected by the selection operation is used as the target channel, and the control device switch the current communication channel to the target channel;

If the user's selection operation on the DFS channel option carrying the second mark is detected, radar signal detection of a preset duration is performed on the DFS channel corresponding to the DFS channel option carrying the second mark selected by the selection operation.
A control device, characterized in that at least two detection channels for detecting radar signals are deployed in the control device, and if the current communication channel between the control device and the controlled device is a DFS channel, the at least two One of the detection channels is used to detect the current communication channel in real time to determine whether the current communication channel is occupied by radar signals, and the other detection channels in the at least two detection channels are used to detect the current communication channel. Other DFS channels other than the current communication channel perform radar signal detection to determine whether other DFS channels other than the current communication channel are occupied by radar signals.
The device according to claim 26, wherein the at least two detection channels for detecting radar signals do not detect the DFS channels that have been detected to be occupied by radar signals within a preset time period.
The device according to claim 26, wherein the control device is further used to display channel options, the channel options include DFS channel options carrying a first mark and DFS channel options carrying a second mark, the The first flag is different from the second flag. The DFS channel option carries the first flag to indicate that the corresponding DFS channel has passed the radar signal detection of the preset duration, and the DFS channel option carries the second flag to indicate that it has not yet been matched. The DFS channel for preset radar signal detection.
The device according to any one of claims 26-28, wherein the controlled device is an unmanned aerial vehicle, an unmanned vehicle or a handheld pan-tilt device.
A communication system, characterized in that at least two detection channels for detecting radar signals are deployed in the communication system, and if the current communication channel of the communication system is a DFS channel, the at least two detection channels One of the detection channels is used for real-time detection of the current communication channel to determine whether the current communication channel is occupied by radar signals, and the other detection channels in the at least two detection channels are used for detecting other than the current communication channel Perform radar signal detection on other DFS channels of the current communication channel to determine whether other DFS channels other than the current communication channel are occupied by radar signals, wherein the at least two detection channels are deployed in the same device in the communication system, or Distributed deployment in different devices in the communication system.
A computer-readable storage medium, characterized by comprising instructions, which, when run on a computer, cause the computer to execute the communication channel switching method according to any one of claims 1-12.
A computer program product containing instructions, characterized in that, when the instructions are run on a computer, the computer is made to execute the communication channel switching method according to any one of claims 1-12.