CN113055977B

CN113055977B - Method and device for scanning wireless hotspots

Info

Publication number: CN113055977B
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: 2023-04-21
Anticipated expiration: 2041-04-30
Also published as: CN113055977A

Abstract

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

Description

Method and device for scanning wireless hotspots

Technical Field

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

Background

At present, common display devices such as smart televisions and smart phones in the market realize mutual communication based on 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 time stamp of the scanning instruction with the time stamp of the connectable wireless hotspots, takes the connectable wireless hotspots with the time stamp later than the time stamp of the scanning instruction as a scanning result, and displays the scanning result in the display screen.

However, due to randomness of user operation and variability of wireless environment, the terminal device may need to execute higher priority instructions in the process of scanning wireless hotspots, and the scanning is interrupted, so that the situation that the scanning result obtained by the terminal device is zero or the scanning result is incomplete occurs, and the display device displays the incomplete or zero scanning result in the display screen, so that the use experience of the user is reduced.

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 the scanning result is zero or the scanning result is incomplete when the wireless hotspot is interrupted by a higher-priority instruction in the constitution of the search second 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 is configured to perform:

acquiring a first instruction, and controlling the WiFi assembly to sequentially broadcast a detection frame through channels to be scanned, which are included in a wireless hot spot channel set, according to the first instruction; the first instruction indicates scanning for wireless hotspots;

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

And suspending execution of the first instruction, and controlling the WiFi assembly to sequentially broadcast a detection frame through channels to be scanned, which are included in the wireless hot spot channel set, according to the first instruction again after the second instruction is completed.

Based on the above scheme, if the display device is interrupted by the higher-priority instruction in the process of executing the scanning of the wireless hotspot, the execution of the first instruction is paused, the second instruction with higher priority is completed first, and then the first instruction is re-executed, so that the scanning instruction is not stopped executing due to the higher-priority instruction. Even if the scanning is interrupted, the display device can still ensure that the time stamp of the scanned wireless hot spot is later than the time stamp of the scanning instruction, so that 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 sequentially broadcast a detection frame through channels to be scanned, which are included in the wireless hot spot channel set, according to the first instruction acquired from the cache.

Based on the above scheme, after receiving the second instruction with higher priority, the controller in the display device stores the first instruction in the cache, acquires the first instruction from the cache after the second instruction is completed, and re-executes the first instruction. And the first instruction is cached, so that the safety of the first instruction is ensured, and the condition of instruction loss is avoided. And when the first instruction is executed again, rescanning each channel, and ensuring that the time stamp of the scanned wireless hot spot is later than that of the first instruction, thereby ensuring the comprehensiveness of the scanning result.

In some embodiments, the controller includes a framework layer and a kernel layer;

the framework 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 configured to store the first instruction in a cache when the second instruction is received and the priority of the second instruction is determined to be higher than the priority of the first instruction; after the second instruction is finished, the first instruction is obtained from the cache, and the WiFi assembly is controlled to sequentially broadcast detection frames through channels to be scanned, which are included by the wireless hot spot channel set, according to the first instruction obtained 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 component is controlled to execute the first instruction again. The time stamp of the scanned wireless hot spot is ensured to be later than the time stamp of the first instruction, so that a more comprehensive scanning result can be obtained, and the condition of incomplete scanning result 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 the wireless hotspot channel set, and send the response frame or the beacon frame to the controller; the response frame comprises wireless hot spot information for transmitting the response frame, or the beacon frame comprises wireless hot spot information for transmitting the beacon frame;

and the controller is further used for determining connectable wireless hotspots 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 hotspots.

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 the beacon frame to the controller, and the controller determines the connectable wireless hot spot according to the response frame or the beacon frame and further generates a scanning result according to the connectable wireless hot spot. And the scanning results are 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 a detection frame sequentially through channels to be scanned, which are included in the wireless hot spot channel set; the first instruction indicates scanning for wireless hotspots;

and suspending execution of the first instruction, and after the second instruction is completed, broadcasting a detection frame through channels to be scanned, which are included in the wireless hot spot channel set, according to the first instruction again.

In some embodiments, the method further comprises:

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

And broadcasting a detection frame through channels to be scanned included in the wireless hot spot channel set in turn according to the first instruction, wherein the detection frame comprises the following steps:

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

In some embodiments, the acquiring the first instruction sequentially broadcasts the probe frame through channels to be scanned included in the wireless hotspot channel set includes:

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

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

In some embodiments, the method further comprises:

receiving a response frame or a beacon frame corresponding to the detection frame through at least one channel to be scanned included in the wireless hot spot channel set; the response frame comprises wireless hot spot information for transmitting the response frame, or the beacon frame comprises wireless hot spot information for transmitting 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 device.

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

the acquisition unit is used for acquiring a first instruction;

the processing unit is used for broadcasting the detection frames through channels to be scanned, which are included in the wireless hot spot channel set, in sequence according to the first instruction; the first instruction indicates scanning for wireless hotspots;

the acquiring unit is further configured to acquire 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;

and the processing unit is further used for suspending execution of the first instruction, and after the second instruction is completed, broadcasting the detection frame through channels to be scanned, which are included in the wireless hot spot 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 second instruction is fetched by the fetch unit;

the processing unit is specifically configured to, when broadcasting a probe frame through channels to be scanned included in the wireless hotspot channel set in sequence according to the first instruction, perform:

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 hot spot information for transmitting the response frame, or the beacon frame comprises wireless hot spot information for transmitting the beacon frame; and the method is also used for determining connectable wireless hotspots 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 hotspots.

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, embodiments of the present application also provide a computer storage medium having stored therein computer program instructions which, when run on a computer, cause the computer to perform the method as described in the second aspect.

The technical effects caused by any implementation manner of the second aspect to the fourth aspect may refer to the technical effects caused by the corresponding implementation manner of the first aspect, and are not described herein.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

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

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

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

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

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

FIG. 4A is a schematic diagram of a display interface for determining a scan instruction according to an embodiment of the present application;

FIG. 4B is a schematic diagram of a display interface of a scan result according to an embodiment of the present disclosure;

FIG. 4C is a schematic diagram of a display interface of another scan result according to an 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 application;

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

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be implemented in sequences other than those illustrated or otherwise described herein.

When a conventional smart display device such as a smart television or a smart phone is connected to a wireless network, the display device performs a wireless hotspot near the scan based on an instruction for instructing the scan. However, if the display device receives the instruction with the higher priority in the process of scanning the wireless hotspot, the scanning process is terminated, and the display device executes the instruction with the higher priority, 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, the embodiments of the present application provide a method and apparatus for scanning a wireless hotspot, where if a display device is interrupted by an instruction with a higher priority in a scanning process, the scanning instruction is paused first, and after the instruction with the higher priority is completed, the scanning instruction is executed again. And the real-time performance and the accuracy of the scanning result are ensured.

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 in connection with different scenarios. It should be noted that, the scheme provided by the application may be applied to a display device, where the display device related to the application has a function of connecting to a wireless network, for example, may be a smart phone, a tablet computer, a notebook computer, a palm computer, a smart television, a mobile internet device (Mobile Internet Device, MID), a wearable device, and the like, which have a function of connecting to a wireless network. The wearable device may include, for example, a smart watch or smart glasses, a smart bracelet, or the like.

The method provided by the embodiment of the application is applied to the display equipment of the android system, and can also be applied to the display equipment of other systems, and the application is not particularly limited. As an example, the structure of the android system display device according to the present application will be described in detail. Referring to fig. 1A, a schematic hardware configuration of a display device 200 of a possible android system is shown. In some embodiments, the display apparatus includes at least one of a modem 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, a user interface 280.

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

In some embodiments, the modem 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: the communicator 220 may comprise a wireless fidelity (Wireless Fidelity, wifi) component or other network communication protocol chip. The display device 200 may perform data transmission with an external device or a counterpart 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: 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, etc.

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

In some embodiments, the controller 250 includes at least one of a central processing unit (Central Processing Unit, CPU), a video processor, an audio processor, a graphics processor (Graphics Processing Unit, GPU), RAM (Random Access Memory), a ROM (Read-Only Memory), a first to 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 memory, and to execute various applications, data, and content based on various interactive instructions received from external inputs.

In some embodiments, a graphics processor is used to generate various graphical objects. The graphic processor comprises an arithmetic unit, which is used for receiving various interactive instructions input by a user to operate and displaying various objects according to display attributes; the display device further 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 part.

In some embodiments, the video processor is configured to receive an external video signal, and perform at least one of decompression, decoding, scaling, noise reduction, frame rate conversion, resolution conversion, image composition, and other video processing 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 compositing 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 may be played in a speaker.

In some embodiments, a user may input a user command through 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 recognizes the sound or gesture through the sensor to receive the user input command.

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

In some embodiments, a system of peer devices may include a Kernel (Kernel), a command parser (shell), a file system, and an application. The kernel, shell, and file system together form the basic operating system architecture that allows users to manage files, run programs, and use the system. After power-up, the kernel is started, the kernel space is activated, hardware is abstracted, hardware parameters are initialized, virtual memory, a scheduler, signal and inter-process communication (IPC) are operated and maintained. After the kernel is started, shell and user application are loaded again. The application is compiled into machine code after start-up to form a process.

In some embodiments, the control apparatus 100 may be further included in embodiments of the present application, where the control apparatus 100 is configured to control the display device 200 as shown in fig. 1A, and may receive an operation instruction input by a user, and convert the operation instruction into an instruction that can be recognized and responded by the display device 200, so as to mediate interaction between the user and the display device 200. Such as: the user responds to the channel addition and subtraction operation by operating the channel addition and subtraction key on the control apparatus 100.

The control device 100 may be a remote control 100A, including an infrared protocol communication or a bluetooth protocol communication, and other short-range communication modes, and the display apparatus 200 is controlled by a wireless or other wired mode. The user may control the display device 200 by inputting user instructions through keys on a remote control, voice input, control panel input, etc.

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

A block diagram of the configuration of the control apparatus 100 is exemplarily shown in fig. 1B. 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 appreciated that fig. 1B is only an example, and that the control device 100 may include more or better components than those in fig. 1B, which are not specifically limited in this application.

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 and operation of the control device 100, as well as the communication collaboration between the internal components, external and internal data processing functions.

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

The communicator 130 performs communication of control signals and data signals with the display device 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, keys 144, etc., so that a user may input user instructions regarding controlling the display apparatus 200 to the control device 100 through voice, touch, gesture, press, etc.

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

A power supply 160 for providing operating power support for the various elements of the control device 100 under the control of the controller 110. May be in the form of a battery and associated control circuitry.

In addition, the application further provides a software configuration block diagram of the display device 200 of the Android system, specifically as shown in fig. 1C, in some embodiments, the system is divided into four layers, namely, an application layer (abbreviated as "application layer"), an application framework layer (Application Framework) layer (abbreviated as "framework layer"), a An Zhuoyun line (Android run) layer and a system library layer (abbreviated as "system runtime layer"), and a kernel layer from top to bottom.

In some embodiments, at least one application is running in the application layer, where the application may be a Window (Window) program, a system setup program, or a clock program, etc. that is self-contained in the operating system; or may be 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 (application programming interface, API) and programming framework for applications of the application layer. The application framework layer includes some predefined functions. The application framework layer corresponds to 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, the application framework layer in the embodiment of the present application includes a manager (manager), a Content Provider (Content Provider), and the like, where the manager includes at least one of the following modules: an Activity Manager (Activity Manager) is used to interact with all activities running in the system; a Location Manager (Location Manager) is used to provide system services or applications with access to system Location services; a Package Manager (Package Manager) for retrieving various information about an application Package currently installed on the device; a notification manager (Notification Manager) for controlling the display and clearing of notification messages; a Window Manager (Window Manager) is used to manage bracketing icons, windows, toolbars, wallpaper, and desktop components on the user interface.

In some embodiments, the activity manager is used to manage the lifecycle of the individual applications as well as the usual navigation rollback functions, such as controlling the exit, opening, fallback, etc. of the applications. The window manager is used for managing all window programs, such as obtaining the size of the display screen, judging whether a status bar exists or not, locking the screen, intercepting the screen, controlling the change of the display window (for example, reducing the display window to display, dithering display, distorting display, etc.), etc.

In some embodiments, the system runtime layer provides support for the upper layer, the framework layer, and when the framework layer is in use, the android operating system runs the C/C++ libraries contained 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 kernel layer at least includes at least one of the following modules: wireless module, audio module, display module, bluetooth module, camera module, WIFI module, USB module, HDMI module, sensor module (such as fingerprint sensor, temperature sensor, pressure sensor etc.), power module etc.

Referring to fig. 2, a flow chart of a scanning method of a wireless hotspot is provided in an embodiment of the present application. The display device may employ the structure shown in fig. 1A described above, for example. The scanning method flow of the wireless hot spot specifically comprises the following steps:

The display device obtains a first instruction and broadcasts a detection frame through each channel to be scanned included in the wireless hotspot channel set in sequence 201.

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

Wherein the first instruction directs scanning for wireless hotspots. The wireless hotspot channel set may include a plurality of channels, for example, channels included in the 2.4G band or channels included in the 5G band. Taking the 2.4G frequency band as an example, 13 channels which overlap in the 2.4G frequency band are included, and the 13 channels form a wireless hot spot channel set. The wireless hotspots may operate on one or more channels.

After the display device acquires the first instruction, the display device can broadcast the detection frame through each channel in the wireless hot spot channel set in sequence, and after the wireless hot spot running in the channel receives the detection frame, the display device can reply to the response frame. Or when the wireless hotspot is in a normal working state, the beacon frame is periodically broadcast outwards to indicate that the wireless hotspot can be connected. The display device may stay for a set time, e.g., for 100ms, on each channel while broadcasting the probe frame over the channel, for waiting for the wireless hotspot in the channel to reply to the response frame corresponding to the probe frame. Beacon frames broadcast by wireless hotspots may also be received during the 100ms dwell time. The display device may determine that the wireless hotspot is a connectable wireless hotspot when receiving a response frame of the wireless hotspot reply or receiving a beacon frame broadcast by the wireless hotspot. For example, the display device may store scanned connectable wireless hotspot information in a cache.

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

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

203, after the display device completes the second instruction, broadcasting the detection frame through each channel to be scanned of the wireless hotspot channel set in turn according to the first instruction.

After the display device acquires the second instruction, it 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 second instruction has a higher priority than the first instruction, the display device may suspend execution of the first instruction, execute the second instruction, and re-execute the first instruction after the second instruction is completed. That is, the display device resumes broadcasting the probe frame over each channel included in the set of wireless hotspot channels after completing the second instruction.

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

In some embodiments, after the display device obtains 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 execution of the first instruction, and buffer the first instruction, execute the second instruction with high priority first, and after the second instruction is completed, re-obtain the first instruction from the buffer, restart execution of the first instruction, and rescan all channels.

Based on the scheme, if the display device is interrupted by the instruction with higher priority in the scanning process, the execution of the scanning is suspended, and the scanning is re-performed after the instruction with higher priority is completed, so that the time stamp of the scanned connectable wireless hot spot is ensured to be later than that of the scanning instruction, the comprehensiveness and instantaneity of the scanning result can be improved, and all the scanning results can be ensured to be obtained.

In the following, in order to further understand the scheme proposed in the present application, a 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 described as being configured in the display device.

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

In some embodiments, after determining that the scanning instruction is acquired, the controller may drive the WiFi component to broadcast the probe frames sequentially through the channels according to the scanning instruction. After the wireless hotspots running on each channel receive the detection frames, the response frames corresponding to the detection frames can be fed back through the channels. Or a wireless hotspot operating on each channel may broadcast a beacon frame. Thus, after the WiFi component broadcasts the probe frame through a certain channel, a response frame replied by the wireless hotspot or the broadcasted probe frame may be received. After all channel scans are completed, the display device may determine connectable wireless hotspots based on received response frames or beacon frames broadcast by the wireless hotspots. The response frame or the broadcast beacon frame of the wireless hotspot reply may further include information about the wireless hotspot, such as 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 scan result according to the scanned connectable wireless hotspot, that is, compare the timestamp of the connectable wireless hotspot with the timestamp of the scan instruction, and use the wireless hotspot with the timestamp later than the timestamp of the scan instruction as the scan result. The scan result may include an identification of the connectable wireless hotspot, a channel to which the connectable wireless hotspot belongs, a signal strength of the wireless hotspot, and the like. Still further, the controller may also display the scan result on 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 hotspots, and further includes an icon for indicating a signal strength of each connectable wireless hotspot. The controller may determine, in response to a clicking operation by the user in the display interface shown in fig. 4B, a wireless hotspot to be connected 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 scanning instruction is received, the controller may suspend execution of the scanning instruction when receiving the instruction with the higher priority in the process of executing the scanning of the wireless hotspot, and re-execute the scanning instruction after completing the instruction with the higher priority. For convenience of description, the instruction with higher priority than 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 first cache the scan instructions after receiving the high priority instructions, such as storing the scan instructions in an execution queue. Then, the controller drives the WiFi component to execute the high-priority instruction, and after the high-priority instruction is completed, the controller acquires the scanning instruction from the execution queue and scans again. The time stamp of the connectable wireless hot spot scanned by the controller is later than the time stamp of the scanning instruction, and a complete scanning result can be generated and displayed in a 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 broken during the process of executing the scanning, the result scanned at that time is reported, and since any connectable wireless hot spot may not be scanned 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 the following, in order to further understand the solution proposed in the present application, a specific embodiment will be described for a method for scanning a wireless hotspot proposed in the present application. The solution proposed by the application can be applied to display devices of an android system, and can also be applied to other systems, and the following description is given by taking the display devices 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, namely an application layer, a framework layer, a system runtime layer and a kernel layer. The kernel layer, in turn, includes various modules, including a wireless (wireless) module, for receiving and delivering various instructions from the upper layers. And the WiFi module is used for driving the WiFi component of the display device according to the upper instruction. The following describes embodiments of the present application with specific reference to each layer and each module in the android system. Referring to fig. 5, a flowchart of a scanning method for a specific wireless hotspot according to an embodiment of the present application includes:

501, the framework layer of the android system responds to the operation of a user to determine that a scanning instruction is received.

In particular, referring to the foregoing embodiments, the determination of receiving the scan instruction in response to the operation of the user in the display interface shown in fig. 4A is not described herein.

502, the framework layer sends a scan instruction to the wireless module of the kernel layer.

503, the wireless module sends the scanning instruction to the WiFi module of the kernel layer.

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

Specifically, after receiving the scanning instruction, 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 hotspot channel set includes 13 channels, which are a first channel and a second channel … …, respectively. Taking the example that the wireless hot spot A and the wireless hot spot B operate in a first channel, after the WiFi module is driven to broadcast the detection frame through the first channel, the response frame sent by the wireless hot spot A is received in a set time, the wireless hot spot A is determined to be a connectable wireless hot spot, and the wireless hot spot A is reported to a wireless module of the kernel layer. And the WiFi module can drive the WiFi module to broadcast the detection frames through the 13 channels in sequence according to the scanning instruction, stay for a set time in each channel, and are used for receiving the wireless hotspot reply response frame or receiving the beacon frame broadcast by the wireless hotspot, determining the connectable wireless hotspot and reporting the connectable wireless hotspot to the wireless module.

505, when the wifi module does not finish the scanning instruction, it receives the high priority instruction, pauses the execution of the scanning instruction, and re-executes the scanning instruction after finishing the high priority instruction.

And the WiFi module receives a high-priority instruction with higher priority than the scanning instruction when the wireless hot spot is not scanned in the 13 channels. The high-priority instruction may be an instruction of connection, disconnection, etc. of the wireless hotspot. As an example, if the WiFi module receives an instruction to connect to the wireless hotspot C after completing scanning the wireless hotspot through the first channel and reporting the scanned wireless hotspot a to the wireless module, the WiFi module caches the scanning instruction, for example, stores the scanning instruction in an execution queue. After the WiFi module finishes the instruction of connecting the wireless hot spot C, acquiring a scanning instruction from the execution queue, starting scanning of the wireless hot spot from the first channel again, and reporting the scanned connectable wireless hot spot information to the wireless module. Optionally, the reported wireless hotspot information may include each wireless hotspot identifier, and may further include information such as signal strength of the wireless hotspot, a channel to which the wireless hotspot belongs, and the like.

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 table referred to in this application is a non-contiguous, non-sequential memory structure on physical memory locations. For example, the wireless module receives the wireless hotspot a reported by the WiFi module in step 404, but the WiFi module pauses executing the scanning instruction after receiving the instruction with high priority after reporting the wireless hotspot a, and after completing the instruction with high priority, the WiFi module re-executes the scanning instruction, that is, the WiFi module re-broadcasts the probe 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, the wireless module uses the connectable wireless hotspot information stored in the form of a table, so that after the wireless module receives the wireless hotspot information of the wireless hotspot a 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 up-to-date.

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 complete event to the wireless module after completing scanning for wireless hotspots over the 13 channels.

508, after receiving the scan completion event, the wireless module reports the scan completion event to the frame 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 receiving the scan complete event, the framework layer obtains information for storing all connectable wireless hotspots from the wireless module. Of course, the table may also store information of wireless hotspots before the current scanning, and the scanning time stamps of the wireless hotspots are all earlier than the time stamp of the current scanning instruction. The scanning time stamp of the wireless hotspot is the time stamp of a response frame replied by the wireless hotspot or the time stamp of a replied beacon frame.

510, the framework layer generates a scanning result according to the obtained connectable wireless hotspots.

In some embodiments, after the framework layer obtains the connectible wireless hotspot, the timestamp of the connectible wireless hotspot may be compared with the timestamp of the scan instruction. And taking the connectable wireless hot spot with the time stamp later than the time stamp of the scanning instruction as a scanning result, and deleting the connectable wireless hot spot with the time stamp encountering the time stamp of the scanning instruction. For example, the framework layer may obtain a table stored by the wireless module, delete a wireless hotspot with a timestamp earlier than the timestamp of the scan instruction in the table, and use a wireless hotspot with a timestamp later than the timestamp of the scan instruction in the table as the scan result.

511, the frame layer displays the scan result to the display screen.

The details of fig. 4B in the above embodiments may be referred to, and will not be described herein.

Based on the same concept as the above method, referring to fig. 6, an embodiment of the present application provides a scanning apparatus 600 for wireless hotspots. The apparatus 600 is capable of performing the steps of the above method, and will not be described here again in order to avoid repetition. The apparatus 600 includes: an acquisition unit 601, a processing unit 602, and a display unit 603. Wherein the acquisition unit 601 may be used to implement the functions of the framework layers involved in the above-described embodiments. The processing unit 602 may be configured to implement the functions of the wireless module and the WiFi module in the kernel layer as referred to in the above embodiments. The display unit 603 may be used to implement the functions of the display screens involved in the above-described embodiments.

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

a processing unit 602, configured to broadcast a sounding frame through each channel to be scanned included in the wireless hotspot channel set in turn according to the first instruction; the first instruction indicates scanning for wireless hotspots;

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

The processing unit 602 is further configured to suspend execution of the first instruction, and after the second instruction is completed, broadcast a sounding frame through each channel to be scanned of the wireless hotspot channel set in turn according to the first instruction.

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 hot spot information for transmitting the response frame, or the beacon frame comprises wireless hot spot information for transmitting the beacon frame; the method is also used for determining connectable wireless hotspots 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 hotspots;

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

The embodiments of the present application also provide a computer-readable storage medium having stored thereon a computer program which, when executed by a processor or controller, implements the steps of any of the methods described above.

Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the method embodiments described above may be performed by hardware associated with program instructions. The foregoing program may be stored in a computer readable storage medium. The program, when executed, performs steps including the method embodiments described above; and the aforementioned storage medium includes: various media that can store program code, 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 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 principles and spirit of the application, but such changes and modifications fall within the scope of the application. While 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. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various modifications and variations can 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 and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims

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

the controller is configured to perform:

acquiring a first instruction, controlling the WiFi assembly to sequentially broadcast a detection frame through channels to be scanned, which are included in a wireless hotspot channel set, according to the first instruction, and storing the scanned information of the connectable wireless hotspots into a cache; the first instruction indicates scanning for wireless hotspots;

suspending execution of the first instruction, and after the second instruction is completed, controlling the WiFi component to sequentially broadcast a detection frame through channels to be scanned, which are included in the wireless hot spot channel set, according to the first instruction again, namely controlling the WiFi component to sequentially broadcast a detection frame through each channel, which is included in the wireless hot spot channel set, again;

the WiFi component is further used for receiving a response frame or a beacon frame corresponding to the detection frame through at least one channel to be scanned included in the wireless hot spot channel set, and sending the response frame or the beacon frame to the controller; the response frame comprises wireless hot spot information for transmitting the response frame, or the beacon frame comprises wireless hot spot information for transmitting the beacon frame;

The controller is further configured to determine, after the first instruction is completed, a connectable wireless hotspot according to the received response frame or the beacon frame, and delete the wireless hotspot stored in the cache and a wireless hotspot repeated in the determined connectable wireless hotspot;

and taking the information of the wireless hotspots with the time stamps later than the time stamp of the first instruction in the wireless hotspots remained after the repeated wireless hotspots are deleted as a scanning result.

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

the controller is specifically configured to:

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

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

4. A display device as claimed in any one of claims 1-3, characterized in that the display device further comprises a display screen:

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

5. A method for scanning a wireless hotspot, which is applied to a display device, comprising:

acquiring a first instruction, broadcasting a detection frame through channels to be scanned, which are included in a wireless hotspot channel set, and storing scanned information of connectable wireless hotspots into a cache; the first instruction indicates scanning for wireless hotspots;

Suspending execution of the first instruction, and after the second instruction is completed, broadcasting the detection frames through channels to be scanned, which are included in the wireless hot spot channel set, according to the first instruction again, namely broadcasting the detection frames through each channel, which is included in the wireless hot spot channel set, according to the first instruction again;

after the first instruction is completed, determining connectable wireless hotspots according to the received response frame or the beacon frame, and deleting the wireless hotspots stored in the cache and repeated wireless hotspots in the determined connectable wireless hotspots;

6. The method of claim 5, wherein the method further comprises:

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

7. The method of claim 5, wherein the obtaining the first instruction sequentially broadcasts the probe frame over channels to be scanned included in the set of wireless hotspot channels comprises:

8. The method of any one of claims 5-7, wherein the method further comprises:

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