CN113055977A

CN113055977A - Wireless hotspot scanning method and device

Info

Publication number: CN113055977A
Application number: CN202110485079.1A
Authority: CN
Inventors: 王仁斌; 何志峰; 郑鹏
Original assignee: Hisense Visual Technology Co Ltd
Current assignee: Hisense Visual Technology Co Ltd
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2021-06-29
Anticipated expiration: 2041-04-30
Also published as: CN113055977B

Abstract

The application provides a method and a device for scanning a wireless hotspot, which are used for solving the problem that the obtained scanning result is zero or the scanning result is incomplete when the scanning process of the wireless hotspot is interrupted by a higher-priority instruction. The method comprises the following steps: acquiring a first instruction, and broadcasting a detection frame through channels to be scanned, which are included in a wireless hotspot channel set in sequence; the first instruction indicates to scan for a wireless hotspot; acquiring a second instruction in the process of broadcasting the detection frame through the channel to be scanned; the second instruction has a higher priority than the first instruction; and stopping executing the first instruction, and after finishing the second instruction, broadcasting the detection frame through the channel to be scanned of the wireless hot spot channel set according to the first instruction again.

Description

Wireless hotspot scanning method and device

Technical Field

The present application relates to the field of wireless communications technologies, and in particular, to a method and an apparatus for scanning a wireless hotspot.

Background

The common display devices such as smart televisions and smart phones in the market at present realize communication based on a wireless network technology. Due to the openness of the wireless network, the display device drives the WiFi assembly to scan surrounding wireless hotspots, determines connectable wireless hotspots according to response frames or beacon frames received by the WiFi assembly, compares the timestamp of the scanning instruction with the timestamp of the connectable wireless hotspots, takes the connectable wireless hotspots with the timestamp later than the scanning instruction timestamp as a scanning result, and displays the scanning result on the display screen.

However, due to the randomness of user operations and the variability of the wireless environment, it may be that the terminal device needs to execute a higher priority instruction in the process of scanning the wireless hotspot, the scanning is interrupted, and a situation that the scanning result obtained by the terminal device is zero or the scanning result is not complete occurs, and the display device displays the scanning result that is not complete or zero in the display screen, thereby reducing the user experience.

Disclosure of Invention

The embodiment of the application provides a method and a device for scanning a wireless hotspot, which are used for solving the problem that a scanning result is zero or the scanning result is incomplete when the scanning result is interrupted by a higher-priority instruction in the composition of a search for an attosecond wireless hotspot.

In a first aspect, an embodiment of the present application provides a display device, including a controller and a WiFi component;

the WiFi component is used for broadcasting a detection frame under the control of the controller;

the controller configured to perform:

acquiring a first instruction, and controlling the WiFi assembly to broadcast detection frames through channels to be scanned, which are included in the wireless hotspot channel set, in sequence according to the first instruction; the first instruction indicates to scan for a wireless hotspot;

acquiring a second instruction in the process of broadcasting the detection frame through the channel to be scanned; the second instruction has a higher priority than the first instruction;

and stopping executing the first instruction, and after the second instruction is finished, controlling the WiFi assembly to sequentially broadcast the detection frames through the channel to be scanned, which is included in the wireless hotspot channel set, according to the first instruction again.

Based on the scheme, in the process of scanning the wireless hotspot, if the display device is interrupted by the instruction with higher priority, the execution of the first instruction is suspended, the second instruction with higher priority is completed first, and then the first instruction is re-executed, so that the scanning instruction does not stop being executed due to the instruction with high priority. Even if the scanning is interrupted, the display device can still ensure that the time stamp of the scanned wireless hotspot is later than that of the scanning instruction, the comprehensiveness of the scanning result is improved, and the use experience of a user is improved.

In some embodiments, the controller is further configured to store the first instruction in a cache after the second instruction is fetched; the controller is specifically configured to: and acquiring the first instruction from the cache, and controlling the WiFi assembly to broadcast the detection frame sequentially through the channel to be scanned, which is included in the wireless hotspot channel set, according to the first instruction acquired from the cache.

Based on the scheme, after receiving the second instruction with higher priority, the controller in the display device stores the first instruction in the cache, and after the second instruction is completed, acquires the first instruction from the cache and re-executes the first instruction. The first instruction is cached, so that the safety of the first instruction is ensured, and the condition of instruction loss is avoided. When the first instruction is executed again, each channel is rescanned, and the scanned time stamp of the wireless hotspot is guaranteed to be later than that of the first instruction, so that the comprehensiveness of the scanning result is guaranteed.

In some embodiments, the controller includes a frame layer and a core layer;

the frame layer is used for acquiring the first instruction and the second instruction and sending the first instruction and the second instruction to the kernel layer;

the kernel layer is used for storing the first instruction in a cache when the second instruction is received and the priority of the second instruction is higher than the priority of the first instruction; and after the second instruction is finished, acquiring the first instruction from the cache, and controlling the WiFi assembly to broadcast the detection frame through the channel to be scanned included in the wireless hot spot channel set sequentially according to the first instruction acquired from the cache.

Based on the scheme, after the kernel layer of the controller receives the second instruction with higher priority, the first instruction is cached, and after the second instruction is completed, the WiFi assembly is controlled again to execute the first instruction. The timestamp of the scanned wireless hotspot is guaranteed to be later than the timestamp of the first instruction, so that a more comprehensive scanning result can be obtained, and the condition that the scanning result is incomplete is avoided.

In some embodiments, the WiFi component is further configured to receive a response frame or a beacon frame corresponding to the probe frame through at least one channel to be scanned included in a wireless hotspot channel set, and send the response frame or the beacon frame to the controller; the response frame comprises wireless hotspot information for sending the response frame, or the beacon frame comprises wireless hotspot information for sending the beacon frame;

the controller is further configured to determine a connectable wireless hotspot according to the received response frame or the beacon frame after the first instruction is completed, and generate a scanning result according to the connectable wireless hotspot.

In some embodiments, the display device further comprises a display screen:

and the display screen is used for displaying the scanning result.

Based on the scheme, the WiFi component sends the received response frame or beacon frame to the controller, and the controller determines the connectable wireless hotspot according to the response frame or beacon frame and further generates a scanning result according to the connectable wireless hotspot. And the scanning result is displayed on the display screen, so that the user can see all the scanning results, and the use experience of the user is improved.

In a second aspect, an embodiment of the present application provides a method for scanning a wireless hotspot, which is applied to a display device, and includes:

acquiring a first instruction, and broadcasting detection frames through channels to be scanned, which are included in the wireless hotspot channel set in sequence; the first instruction indicates to scan for a wireless hotspot;

and stopping executing the first instruction, and after finishing the second instruction, sequentially broadcasting the detection frames through the channel to be scanned included in the wireless hot spot channel set according to the first instruction again.

In some embodiments, the method further comprises:

after receiving a second instruction, storing the first instruction in a cache;

broadcasting the probe frame through the channels to be scanned included in the wireless hotspot channel set in sequence according to the first instruction again, wherein the broadcasting probe frame includes:

and acquiring the first instruction from the cache, and broadcasting a detection frame through the channel to be scanned included in the wireless hot spot channel set according to the first instruction acquired from the cache.

In some embodiments, the obtaining the first instruction sequentially broadcasts the probe frame via channels to be scanned included in the wireless hotspot channel set, including:

receiving a first instruction through a framework layer, and sending the first instruction to a kernel layer of the display device;

and driving the WiFi assembly included in the display equipment to sequentially broadcast the detection frame through the channel to be scanned included in the wireless hot spot channel set by the kernel layer.

In some embodiments, the method further comprises:

receiving a response frame or a beacon frame corresponding to the probe frame through at least one channel to be scanned, wherein the channel to be scanned is included in the wireless hotspot channel set; the response frame comprises wireless hotspot information for sending the response frame, or the beacon frame comprises wireless hotspot information for sending the beacon frame;

after the first instruction is completed, determining a connectable wireless hotspot according to the received response frame or the beacon frame, and generating a scanning result according to the connectable wireless hotspot.

In some embodiments, the method further comprises:

and displaying the scanning result on a display screen of the display equipment.

In a third aspect, an embodiment of the present application provides a scanning apparatus for a wireless hotspot, including:

an acquisition unit configured to acquire a first instruction;

the processing unit is used for broadcasting the detection frames through the channels to be scanned, which are sequentially included in the wireless hotspot channel set according to the first instruction; the first instruction indicates to scan for a wireless hotspot;

the obtaining unit is further configured to obtain a second instruction when the processing unit does not complete scanning of all channels to be scanned included in the wireless hotspot channel set, where a priority of the second instruction is higher than a priority of the first instruction;

the processing unit is further configured to suspend execution of the first instruction, and after the second instruction is completed, sequentially broadcast the probe frames through the channel to be scanned included in the wireless hotspot channel set according to the first instruction again.

In some embodiments, the processing unit is further configured to store the first instruction in a cache after the obtaining unit obtains the second instruction;

the processing unit, when sequentially passing through the channel to be scanned broadcast probe frames included in the wireless hot spot channel set again according to the first instruction, is specifically configured to:

In some embodiments, the processing unit is further configured to receive a response frame or a beacon frame corresponding to the probe frame through at least one channel to be scanned included in the wireless hotspot channel set; the response frame comprises wireless hotspot information for sending the response frame, or the beacon frame comprises wireless hotspot information for sending the beacon frame; and the wireless terminal is further used for determining a connectable wireless hotspot according to the received response frame or the beacon frame after the first instruction is completed, and generating a scanning result according to the connectable wireless hotspot.

In some embodiments, the apparatus further comprises a display unit:

and the display unit is used for displaying the scanning result.

In a fourth aspect, the present application further provides a computer storage medium having computer program instructions stored therein, which when run on a computer, cause the computer to perform the method as set forth in the second aspect.

For technical effects brought by any one implementation manner in the second aspect to the fourth aspect, reference may be made to technical effects brought by an implementation manner corresponding to the first aspect, and details are not described here.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1A is a block diagram of a hardware configuration of a display device according to an embodiment of the present disclosure;

fig. 1B is a block diagram of a configuration of a control device 100 according to an embodiment of the present application;

fig. 1C is a block diagram of a software structure of a display device according to an embodiment of the present disclosure;

fig. 2 is a flowchart of a method for scanning a wireless hotspot according to an embodiment of the present disclosure;

fig. 3 is a schematic diagram of a display device according to an embodiment of the present application;

fig. 4A is a schematic view of a display interface for determining a scan command according to an embodiment of the present disclosure;

fig. 4B is a schematic view of a display interface of a scanning result according to an embodiment of the present disclosure;

fig. 4C is a schematic view of a display interface of another scanning result provided in the embodiment of the present application;

fig. 5 is a flowchart of a specific method for scanning a wireless hotspot according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of an apparatus for implementing a method for scanning a wireless hotspot according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

When an existing intelligent display device such as an intelligent television and an intelligent mobile phone is connected to a wireless network, the display device performs scanning on a nearby wireless hotspot based on an instruction for instructing scanning. However, if the display device receives a higher priority instruction in the process of scanning the wireless hotspot, the scanning process is terminated, and the display device executes the higher priority instruction, so that the scanning result is zero or the scanning result is incomplete, and the use experience of the user is reduced.

In view of this, embodiments of the present application provide a method and an apparatus for scanning a wireless hotspot, where if a display device is interrupted by a higher priority instruction during a scanning process, the scanning instruction is suspended first, and after the higher priority instruction is completed, the scanning instruction is re-executed. The real-time performance and accuracy of the scanning result are guaranteed.

In the following, in order to facilitate understanding of the solutions proposed in the embodiments of the present application, the solutions proposed in the present application will be described with reference to different scenarios. It should be noted that the scheme provided by the present application may be applied to a display Device, and the display Device related to the present application has a function of connecting to a wireless network, for example, the display Device may be a smart phone, a tablet computer, a notebook computer, a palm computer, a smart television, a Mobile Internet Device (MID), a wearable Device, or the like having a function of connecting to a wireless network. The wearable device may include, for example, a smart watch or smart glasses, a smart bracelet, and the like.

The method provided by the embodiment of the application is applied to the display device of the android system, and can also be applied to the display devices of other systems, which is not specifically limited in the application. As an example, the following describes the structure of the android display device according to the present application in detail. Referring to fig. 1A, a hardware configuration diagram of a display device 200 of a possible android system is shown. In some embodiments, the display apparatus includes at least one of a tuner demodulator 210, a communicator 220, a detector 230, an external device interface 240, a controller 250, a display component 260, an audio output interface 270, a memory, a power supply, and a user interface 280.

In some embodiments, the display unit 260 includes a display screen component for displaying images, and a driving component for driving image display, a component for receiving image signals output from the processor, and performing display of video content, image content, and a menu manipulation Interface, a User Interface (UI) Interface, and the like.

In some embodiments, the tuner demodulator 210 receives broadcast television signals via wired or wireless reception, and demodulates audio/video signals from a plurality of wireless or wired broadcast television signals. In some embodiments, communicator 220 is a component for communicating with external devices or servers according to various communication protocol types. For example: communicator 220 may include a Wireless Fidelity (Wifi) component or other network communication protocol chip. The display device 200 may perform data transmission with an external device or a peer device through the communicator 220.

In some embodiments, the detector 230 is used to collect signals of the external environment or interaction with the outside.

In some embodiments, the external device interface 240 may include, but is not limited to, the following: any one or more of a High Definition Multimedia Interface (HDMI), analog or data high definition component input interface (component), composite video input interface (CVBS), USB input interface (USB), RGB port, camera interface, and the like.

In some embodiments, processor 250 and modem 210 may be located in different separate devices.

In some embodiments, the controller 250 includes at least one of a Central Processing Unit (CPU), a video processor, an audio processor, a Graphic Processing Unit (GPU), a ram (random Access Memory), a ROM (Read-Only Memory), a first interface to an nth interface for input/output, a communication Bus (Bus), and the like.

In some embodiments, the CPU is configured to execute operating system and application instructions stored in the memory, as well as execute various applications, data, and content in accordance with various interactive instructions that receive external input.

In some embodiments, a graphics processor to generate various graphics objects. The graphic processor comprises an arithmetic unit, which performs operation by receiving various interactive instructions input by a user and displays various objects according to display attributes; the system also comprises a renderer for rendering various objects obtained based on the arithmetic unit, wherein the rendered objects are used for being displayed on the display component.

In some embodiments, the video processor is configured to receive an external video signal, and perform at least one of video processing such as decompression, decoding, scaling, noise reduction, frame rate conversion, resolution conversion, and image synthesis according to a standard codec protocol of the input signal.

In some embodiments, the video processor includes at least one of a demultiplexing module, a video decoding module, an image composition module, a frame rate conversion module, a display formatting module, and the like.

In some embodiments, the audio processor is configured to receive an external audio signal, decompress and decode the external audio signal according to a standard codec protocol of the input signal to obtain a sound signal that can be played in the speaker.

In some embodiments, the user may input a user command on a Graphical User Interface (GUI) displayed on the display part 260, and the user input interface receives the user input command through the Graphical User Interface (GUI). Alternatively, the user may input the user command by inputting a specific sound or gesture, and the user input interface receives the user input command by recognizing the sound or gesture through the sensor.

In some embodiments, user interface 280 is an interface that can be used to receive control inputs (e.g., physical buttons on the body of a peer device, or the like).

In some embodiments, the system of the peer device may include a Kernel (Kernel), a command parser (shell), a file system, and an application. The kernel, shell, and file system together make up the basic operating system structure that allows users to manage files, run programs, and use the system. After power-on, the kernel is started, kernel space is activated, hardware is abstracted, hardware parameters are initialized, and virtual memory, a scheduler, signals and interprocess communication (IPC) are operated and maintained. And after the kernel is started, loading the Shell and the user application. The application is compiled into machine code after being started, and a process is formed.

In some embodiments, the control apparatus 100 may further be included in the embodiments of the present application, and the control apparatus 100 is configured to control the display device 200 shown in fig. 1A, which may receive an operation instruction input by a user, and convert the operation instruction into an instruction recognizable and responsive by the display device 200, and serve as an intermediary for interaction between the user and the display device 200. Such as: the user operates the channel up/down key on the control device 100, and the display device 200 responds to the channel up/down operation.

The control device 100 may be a remote controller 100A, which includes infrared protocol communication or bluetooth protocol communication, and other short-distance communication methods, etc. to control the display apparatus 200 in a wireless or other wired manner. The user may input a user instruction through a key on a remote controller, voice input, control panel input, etc., to control the display apparatus 200.

The control device 100 may also be an intelligent device, such as a mobile terminal 100B, a tablet computer, a notebook computer, and the like.

Fig. 1B is a block diagram illustrating the configuration of the control device 100. As shown in fig. 1B, the control device 100 may include a controller 110, a memory 120, a communicator 130, a user input interface 140, an output interface 150, and a power supply 160. It should be understood that fig. 1B is only an example, and the control device 100 may include more or better components than those shown in fig. 1B, and the present application is not limited thereto.

The controller 110 includes a Random Access Memory (RAM)111, a Read Only Memory (ROM)112, a processor 113, a communication interface, and a communication bus. The controller 110 is used to control the operation of the control device 100, as well as the internal components of the communication cooperation, external and internal data processing functions.

And a memory 120 for storing various operation programs, data and applications for driving and controlling the control apparatus 100 under the control of the controller 110. The memory 120 may store various control signal commands input by a user.

The communicator 130 enables communication of control signals and data signals with the display apparatus 200 under the control of the controller 110.

The user input interface 140 may include at least one of a microphone 141, a touch pad 142, a sensor 143, a key 144, and the like, so that a user can input a user instruction regarding controlling the display apparatus 200 to the control apparatus 100 through voice, touch, gesture, press, and the like.

The output interface 150 outputs a user instruction received by the user input interface 140 to the display apparatus 200, or outputs an image or voice signal received by the display apparatus 200. Here, the output interface 150 may include an LED interface 151, a vibration interface 152 generating vibration, a sound output interface 153 outputting sound, a display 154 outputting an image, and the like.

And a power supply 160 for providing operation power support for each element of the control device 100 under the control of the controller 110. In the form of a battery and associated control circuitry.

In addition, the present Application further provides a software configuration block diagram of the display device 200 of the Android system, and specifically as shown in fig. 1C, in some embodiments, the system is divided into four layers, which are, from top to bottom, an Application (Applications) layer (for short, "Application layer"), an Application Framework (Application Framework) layer (for short, "Framework layer"), an Android runtime (Android runtime) and system library layer (for short, "system runtime library layer"), and a kernel layer.

In some embodiments, at least one application runs in the application layer, and the applications may be a Window (Window) program carried by an operating system, a system setting program, a clock program or the like; or an application developed by a third party developer. In particular implementations, the application packages in the application layer are not limited to the above examples.

The framework layer provides an Application Programming Interface (API) and a programming framework for applications of the application layer. The application framework layer includes some predefined functions. The application framework layer acts as a processing center that decides to let the applications in the application layer act. Through the API interface, the application can access the resources in the system and obtain the services of the system in execution.

As shown in fig. 1C, in the embodiment of the present application, the application framework layer includes a manager (Managers), a Content Provider (Content Provider), and the like, where the manager includes at least one of the following modules: the Activity Manager (Activity Manager) is used for interacting with all the activities running in the system; the Location Manager (Location Manager) is used for providing the system service or application with the access of the system Location service; a Package Manager (Package Manager) for retrieving various information related to an application Package currently installed on the device; a Notification Manager (Notification Manager) for controlling display and clearing of Notification messages; a Window Manager (Window Manager) is used to manage the icons, windows, toolbars, wallpapers, and desktop components on a user interface.

In some embodiments, the activity manager is used to manage the lifecycle of the various applications and the general navigation fallback functions, such as controlling exit, open, fallback, etc. of the applications. The window manager is used for managing all window programs, such as obtaining the size of a display screen, judging whether a status bar exists, locking the screen, intercepting the screen, controlling the change of the display window (for example, reducing the display window, displaying a shake, displaying a distortion deformation, and the like), and the like.

In some embodiments, the system runtime layer provides support for the upper layer, i.e., the framework layer, and when the framework layer is used, the android operating system runs the C/C + + library included in the system runtime layer to implement the functions to be implemented by the framework layer.

In some embodiments, the kernel layer is a layer between hardware and software. As shown in fig. 1C, the core layer includes at least one of the following modules: the wireless terminal comprises a wireless module, an audio module, a display module, a Bluetooth module, a camera module, a WIFI module, a USB module, an HDMI module, a sensor module (such as a fingerprint sensor, a temperature sensor, a pressure sensor and the like), a power module and the like.

Referring to fig. 2, a schematic flowchart of a method for scanning a wireless hotspot provided in the embodiment of the present application is shown. Illustratively, the display device may employ the structure shown in fig. 1A described above. The scanning method of the wireless hotspot specifically includes:

the display device obtains a first instruction, and broadcasts a probe frame sequentially through each channel to be scanned, wherein the channel to be scanned is included in the wireless hotspot channel set.

For example, the first instruction may be generated by a control operation of a user, or may also be generated when a communication component for transmitting a broadcast probe frame is activated.

Wherein the first instruction instructs to scan for wireless hotspots. The wireless hotspot channel set may include a plurality of channels, for example, a channel included in a 2.4G frequency band or a channel included in a 5G frequency band. Taking the 2.4G frequency band as an example, there are 13 channels overlapped left and right in the 2.4G frequency band, and the 13 channels constitute a wireless hot spot channel set. The wireless hotspot may operate on one or more channels.

After the display device acquires the first instruction, the display device may broadcast the probe frame sequentially through each channel in the wireless hotspot channel set, and the wireless hotspot operating in the channel may reply to the response frame after receiving the probe frame. Or when the wireless hotspot is in a normal working state, the beacon frame is periodically broadcasted outwards, which indicates that the wireless hotspot can be connected. When broadcasting the probe frame through the channel, the display device may stay on each channel for a set time, for example, 100ms, for waiting for the wireless hotspot in the channel to reply to the response frame corresponding to the probe frame. The beacon frame broadcast by the wireless hotspot can also be received within 100ms of stay. When the display device receives a response frame replied by the wireless hotspot or receives a beacon frame broadcasted by the wireless hotspot, the wireless hotspot can be determined to be a connectable wireless hotspot. Illustratively, the display device may store the scanned connectable wireless hotspot information in a cache.

202, in the process of broadcasting the detection frame through the channel to be scanned, if the second instruction is acquired, the display device suspends executing the first instruction.

Wherein the second instruction has a higher priority than the first instruction.

And 203, after finishing the second instruction, the display device broadcasts the detection frame through each channel to be scanned of the wireless hot spot channel set according to the first instruction again.

After acquiring the second instruction, the display device may first determine whether the priority of the second instruction is higher than the priority of the first instruction. If the priority of the second instruction is not higher than the priority of the first instruction, the display device continues to execute the first instruction. If the priority of the second instruction is higher than the priority of the first instruction, the display apparatus may suspend executing the first instruction, execute the second instruction, and re-execute the first instruction after completing the second instruction. That is, the display device restarts broadcasting the probe frame through each channel included in the wireless hot-spot channel set after completing the second instruction.

For example, the wireless hot-spot channel set includes 13 channels, which are the first channel, the second channel … …, and the thirteenth channel, and the display device scans the 13 channels in sequence when executing the first instruction. For example, when scanning to a third channel, the second instruction is received, the priority of the second instruction is determined to be higher than that of the first instruction, the execution of the first instruction is suspended, and the execution of the second instruction is started. And after the second instruction is finished, re-executing the first instruction, and scanning 13 channels in sequence from the first channel.

In some embodiments, after the display device acquires the second instruction, if it is determined that the priority of the second instruction is higher than the priority of the first instruction, the display device may suspend executing the first instruction, cache the first instruction first, execute the second instruction with high priority first, after the second instruction is completed, acquire the first instruction from the cache again, restart execution of the first instruction, and rescan all channels.

Based on the scheme, if the display equipment is interrupted by the higher-priority instruction in the scanning process, the execution of scanning is suspended, and the scanning is performed again after the higher-priority instruction is completed, so that the time stamps of the scanned connectable wireless hotspots are guaranteed to be later than the time stamp of the scanning instruction, the comprehensiveness and the real-time performance of the scanning result can be improved, and the whole scanning result can be guaranteed to be obtained.

In order to further understand the scheme proposed in the present application, the method for scanning a wireless hotspot proposed in the present application will be described with reference to a specific scanning scenario. The display device to which the present application relates may include a controller, a display screen, and a WiFi component for broadcasting probe frames and receiving response frames or beacon frames, as shown in fig. 3. It should be noted that the WiFi component may be configured in the display device, or may be a hardware device connected to the display device, and in this application, the WiFi component is configured in the display device as an example.

In some embodiments, the display device may determine an instruction to scan for wireless hotspots in response to a user's operation on the display screen, for example, see the display interface shown in fig. 4A. A control 401 is included in the display interface shown in fig. 4A, and the display device determines that an instruction to scan a wireless hotspot is received in response to an operation of the control 401 by a user in the display interface shown in fig. 4A. The operation may be a touch operation, or may be a remote control operation implemented by the user through the control device 100 shown in fig. 1B, which is not specifically limited in this application. For ease of description, the instruction for instructing scanning for wireless hotspots will be referred to as a scan instruction in the following.

In some embodiments, after the display device determines that the scan instruction is acquired, the controller may drive the WiFi component to broadcast the probe frames sequentially through the channels according to the scan instruction. After the wireless hot spot operating in each channel receives the detection frame, the wireless hot spot feeds back a corresponding response frame of the detection frame through the channel. Or a wireless hotspot operating on a respective channel may broadcast a beacon frame. Therefore, after the WiFi component broadcasts the probe frame through a certain channel, a response frame replied by the wireless hotspot or the broadcast probe frame may be received. After all channel scans are completed, the display device may determine connectable wireless hotspots according to the received response frame or the beacon frame broadcast by the wireless hotspots. The response frame replied by the wireless hotspot or the broadcast beacon frame may further include the wireless hotspot information, such as information including signal strength of the wireless hotspot, a channel to which the wireless hotspot belongs, and an identifier of the wireless hotspot. The controller may further generate a scanning result according to the scanned connectable wireless hotspot, that is, compare the timestamp of the connectable wireless hotspot with the timestamp of the scanning instruction, and take the wireless hotspot with the timestamp later than the timestamp of the scanning instruction as the scanning result. The scanning result may include an identifier of a connectable wireless hotspot, a channel to which the wireless hotspot belongs, and a signal strength of the wireless hotspot. Still further, the controller may further display the scanning result in a display screen, for example, see a display interface shown in fig. 4B, where the display interface shown in fig. 4B includes a plurality of connectable wireless hot spots and further includes icons for indicating signal strengths of the respective connectable wireless hot spots. The controller may determine a wireless hotspot needing to be connected in response to a click operation of the user in the display interface shown in fig. 4B, so as to drive the WiFi component to establish a connection with the wireless hotspot selected by the user.

In other embodiments, after the display device determines that the scan instruction is received, the controller may suspend executing the scan instruction when receiving an instruction with a higher priority in the process of executing the scanning of the wireless hotspot, and re-execute the scan instruction after completing the instruction with the higher priority. For convenience of description, an instruction with priority higher than that of the scanning instruction is referred to as a high-priority instruction, and the high-priority instruction may be, for example, a wireless hotspot connection or disconnection instruction. As an example, the controller may buffer the scan instruction after receiving the high priority instruction, e.g., store the scan instruction in an execution queue. And then, the controller drives the WiFi assembly to execute the high-priority instruction, and after the high-priority instruction is finished, the scanning instruction is obtained from the execution queue and scanning is carried out again. The time stamps of connectable wireless hotspots scanned by the controller are all later than the time stamp of the scanning instruction, and a complete scanning result can be generated and displayed on the display screen, for example, see the display interface shown in fig. 4B. It should be noted that, in the prior art, if the display device is interrupted during the scanning process, the scanning result at that time is reported, and since any connectable wireless hotspot may not be scanned yet at this time, the scanning result displayed by the display device in the display screen is empty, for example, see the display interface shown in fig. 4C.

In order to further understand the scheme proposed in the present application, the method for scanning a wireless hotspot proposed in the present application will be described in specific embodiments. Given that the scheme provided by the application can be applied to the display device of the android system, and can also be applied to other systems, the following description will be given by taking the display device applied to the android system as an example. In combination with the structural block diagram shown in fig. 1C, the android system includes four layers, which are an application layer, a framework layer, a system runtime layer, and a kernel layer. The kernel layer comprises various modules, including a wireless (wireless) module, for receiving and transmitting various instructions from the upper layer. The display device further comprises a WiFi module used for driving WiFi components of the display device according to the upper layer instructions. The embodiments of the present application will be described below with specific reference to layers and modules in an android system. Referring to fig. 5, a flowchart of a method for scanning a specific wireless hotspot provided in an embodiment of the present application includes:

501, the framework layer of the android system determines that a scanning instruction is received in response to an operation of a user.

Specifically, as described in the foregoing embodiment, the scan instruction is determined to be received in response to the operation of the user in the display interface shown in fig. 4A, which is not described herein again.

The framework layer sends the scan instructions to the wireless module of the kernel layer 502.

The wireless module sends 503 a scan command to the WiFi module of the kernel layer.

And 504, the WiFi module executes the scanning instruction and reports the scanned connectable wireless hotspots to the wireless module.

Specifically, after receiving the scan command, the WiFi module may drive the WiFi component in the display device to broadcast the probe frame sequentially through each channel included in the wireless hotspot channel set. As an example, the wireless hot-spot channel set includes 13 channels, i.e., a first channel, a second channel … …, and a thirteenth channel. Taking the wireless hotspot a and the wireless hotspot B operating in the first channel as an example, after the WiFi module drives the WiFi component to broadcast the detection frame through the first channel, the WiFi module receives a response frame sent by the wireless hotspot a within a set time, determines that the wireless hotspot a is a connectable wireless hotspot, and reports the wireless hotspot a to the wireless module of the kernel layer. In this way, the WiFi module may drive the WiFi component to broadcast the probe frame sequentially through the 13 channels according to the scanning instruction, and stay for a set time in each channel, so as to receive the wireless hotspot reply response frame or receive the beacon frame broadcasted by the wireless hotspot, determine the connectable wireless hotspot, and report the connectable wireless hotspot to the wireless module.

505, when the WiFi module does not complete the scan command, it receives the high priority command, suspends the execution of the scan command, and re-executes the scan command after the high priority command is completed.

The WiFi module receives a high-priority command higher than the scanning command when the wireless hotspot scanning in the 13 channels is not completed. The high-priority command may be a connection or disconnection command of the wireless hotspot. As an example, after the WiFi module finishes scanning the wireless hotspot through the first channel and reports the scanned wireless hotspot a to the wireless module, and receives an instruction for connecting the wireless hotspot C, the WiFi module caches the scanning instruction, for example, stores the scanning instruction in an execution queue. And after the WiFi module finishes the instruction of connecting the wireless hotspot C, acquiring a scanning instruction from the execution queue, starting the scanning of the wireless hotspot from the first channel again, and reporting the scanned connectable wireless hotspot information to the wireless module. Optionally, the reported wireless hotspot information may include identifiers of the wireless hotspots, and may also include information of signal strength of the wireless hotspots, channels to which the wireless hotspots belong, and the like.

And 506, after the wireless module receives the connectable hot spot, storing the connectable wireless hot spot information.

In some embodiments, the wireless module may store the connectable wireless hotspots in the form of a table after receiving the connectable wireless hotspots. The present application relates to a table that is a non-sequential, non-sequential storage structure on a physical storage unit. For example, the wireless module receives the wireless hotspot a reported by the WiFi module in step 404, but the WiFi module receives the high-priority instruction after reporting the wireless hotspot a and then suspends executing the scanning instruction, and after the high-priority instruction is completed, the WiFi module re-executes the scanning instruction, that is, the WiFi module re-broadcasts the detection frame through the first channel, receives the response frame returned by the wireless hotspot information of the wireless hotspot a again, and then reports the wireless hotspot information of the wireless hotspot a again. At this time, since the wireless module stores the connectable wireless hotspot information in the form of the table, after the wireless hotspot information of the wireless hotspot a is received by the wireless module for the second time, the wireless hotspot information of the wireless hotspot a received for the second time is used to replace the wireless hotspot information of the original wireless hotspot a in the table, thereby ensuring that the connectable wireless hotspots stored in the wireless module are all the latest.

507, after the WiFi module finishes scanning all channels, reporting a scanning completion event to the wireless module.

In some embodiments, if the wireless hotspot channel set includes 13 channels, the WiFi reports a scan completion event to the wireless module after completing scanning the wireless hotspot over the 13 channels.

And 508, after receiving the scanning completion event, the wireless module reports the scanning completion event to the framework layer.

509, after the frame layer receives the scan completion event, all connectable wireless hotspots are obtained from the wireless module.

In some embodiments, after the frame layer receives the scan completion event, the frame layer obtains information for storing all connectable wireless hotspots from the wireless module. Of course, the table may also store information of the wireless hotspots before the current scanning, and the scanning timestamps of the wireless hotspots are all earlier than the timestamp of the current scanning instruction. And the scanning timestamp of the wireless hotspot is the timestamp of a response frame replied by the wireless hotspot or the timestamp of a replied beacon frame.

The framework layer generates scanning results according to the acquired connectable wireless hotspots 510.

In some embodiments, after the frame layer acquires the connectable wireless hotspot, the timestamp of the connectable wireless hotspot may be compared to the timestamp of the scan instruction. Connectable wireless hotspots with timestamps later than the timestamp of the scan instruction are taken as the scan result, and connectable wireless hotspots with timestamps encountering the timestamp of the scan instruction are deleted. For example, the framework layer may obtain a table stored by the wireless module, delete a wireless hotspot whose timestamp is earlier than that of the scan instruction in the table, and use a wireless hotspot whose timestamp is later than that of the scan instruction in the table as a scan result.

And 511, displaying the scanning result in a display screen by the frame layer.

Specifically, refer to fig. 4B in the above embodiment, which is not described herein again.

Based on the same concept as the method described above, referring to fig. 6, an embodiment of the present application provides a scanning apparatus 600 for a wireless hotspot. The apparatus 600 is capable of performing the steps of the above method, and therefore, the description thereof is omitted here for the sake of avoiding repetition. The apparatus 600 comprises: an acquisition unit 601, a processing unit 602, a display unit 603. The obtaining unit 601 may be configured to implement the functions of the framework layer in the above embodiments. The processing unit 602 may be configured to implement the functions of the wireless module and the WiFi module in the kernel layer in the above embodiments. The display unit 603 can be used to realize the functions of the display screen referred to in the above-described embodiments.

In some embodiments, a fetch unit 601 to fetch a first instruction;

a processing unit 602, configured to sequentially broadcast probe frames via each to-be-scanned channel included in the wireless hotspot channel set according to the first instruction; the first instruction indicates to scan for a wireless hotspot;

the obtaining unit 601 is further configured to obtain a second instruction in a process that the processing unit 602 broadcasts a probe frame through the channel to be scanned, where a priority of the second instruction is higher than a priority of the first instruction;

the processing unit 602 is further configured to suspend executing the first instruction, and after the second instruction is completed, sequentially broadcast the probe frame through each to-be-scanned channel of the wireless hot spot channel set according to the first instruction again.

In some embodiments, the processing unit 602 is further configured to receive a response frame or a beacon frame corresponding to the probe frame through at least one channel to be scanned included in the wireless hotspot channel set; the response frame comprises wireless hotspot information for sending the response frame, or the beacon frame comprises wireless hotspot information for sending the beacon frame; the wireless network device is also used for determining a connectable wireless hotspot according to the received response frame or the beacon frame after the first instruction is completed, and generating a scanning result according to the connectable wireless hotspot;

and the display unit is used for displaying the scanning result.

Embodiments of the present application also provide a computer-readable medium, on which a computer program is stored, where the computer program is executed by a processor or a controller to implement the steps of any of the methods as described above.

Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.

While specific embodiments of the present application have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and that the scope of the present application is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and principles of this application, and these changes and modifications are intended to be included within the scope of this application. While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A display device comprising a controller and a wireless fidelity, WiFi, component;

the controller configured to perform:

2. The display device of claim 1, wherein the controller is further to store the first instruction in a cache after the second instruction is fetched;

the controller is specifically configured to:

and acquiring the first instruction from the cache, and controlling the WiFi assembly to broadcast the detection frame sequentially through the channel to be scanned, which is included in the wireless hotspot channel set, according to the first instruction acquired from the cache.

3. The display device of claim 2, wherein the controller comprises a frame layer and a kernel layer;

4. The display device according to any one of claims 1 to 3, wherein:

the WiFi component is further configured to receive a response frame or a beacon frame corresponding to the probe frame through at least one channel to be scanned included in a wireless hotspot channel set, and send the response frame or the beacon frame to the controller; the response frame comprises wireless hotspot information for sending the response frame, or the beacon frame comprises wireless hotspot information for sending the beacon frame;

5. The display device of claim 4, wherein the display device further comprises a display screen:

and the display screen is used for displaying the scanning result.

6. A method for scanning a wireless hotspot is applied to a display device and comprises the following steps:

acquiring a first instruction, and broadcasting a detection frame through channels to be scanned, which are included in a wireless hotspot channel set in sequence; the first instruction indicates to scan for a wireless hotspot;

7. The method of claim 6, wherein the method further comprises:

after the second instruction is acquired, storing the first instruction in a cache;

8. The method of claim 6, wherein the obtaining the first instruction to broadcast probe frames sequentially through channels to be scanned included in the set of wireless hot-spot channels comprises:

and driving a WiFi assembly included in the display equipment to sequentially pass through a channel to be scanned broadcast detection frame included in the wireless hot spot channel set through the kernel layer.

9. The method of any one of claims 6-8, further comprising:

10. The method of claim 9, wherein the method further comprises: