WO2017063369A1 - Method of establishing wireless direct connection and device utilizing same - Google Patents

Abstract

The invention discloses a method of establishing a wireless direct connection. The method comprises: when a wireless direction connection mode is entered, obtaining, by a first terminal, a channel number corresponding to a channel having minimum interference in a present wireless network; generating, by the first terminal, according to the channel number, a pattern code to be scanned by a second terminal for obtaining the channel number; and upon receiving a direction connection request transmitted from the second terminal, establishing, by the first terminal, according to the channel number, a wireless direction connection to the second terminal. The invention also discloses a wireless direction connection device. The invention can be implemented to determine a channel number for performing a Miracast connection by a terminal by scanning a pattern code, increasing connection efficiency of a Miracast application.

Description

 Wireless direct connection method and device

Technical field

The present invention relates to the field of wireless transmission technologies, and in particular, to a wireless direct connection method and apparatus.

Background technique

With the rapid development of wireless transmission technology, especially the short-distance wireless transmission - the rise of Wi-Fi, it has undoubtedly brought great convenience to people's daily life, for example, people can browse the web and watch video through Wi-Fi. Wait. So one based on Wi-Fi Direct's wireless direct connection application came into being, for example, Miracast. The Miracast application allows content on one terminal's screen to be projected onto another terminal's screen over a wireless network to meet the entertainment and product experience requirements.

At present, the method for connecting the Miracast application includes: detecting whether two terminals are connected to the same wireless network. If both terminals are connected to the same wireless network, the two terminals directly connect to the Miracast through the channel of the wireless network; If the terminals are not connected to the same wireless network, the first terminal and the second terminal scan all channels of the wireless network that they access to select a good channel, and the first terminal and the second terminal connect the Miracast application through the selected high quality channel. .

Although the method can realize the connection of the Miracast application, both terminals need to scan the channels of the wireless network one by one to determine that the connection is on the same high-quality channel, and the scanning of the non-connected channel extends the connection time of the Miracast application to cause the connection of the Miracast application. low efficiency.

Summary of the invention

The main object of the present invention is to provide a wireless direct connection method and device, which aims to solve the problem of low efficiency of the Miracast connection.

To achieve the above objective, the present invention provides a wireless direct connection method, including:

When the first terminal enters the wireless direct connection mode, the first terminal compares the direct connection parameter level of the local terminal with the preset direct connection parameter level;

When the direct connection parameter level of the local end is equal to the preset direct connection parameter level, obtain the channel number corresponding to the channel with the least interference in the current wireless network;

The first terminal generates a graphic code according to the channel number, so that the second terminal scans the graphic code to obtain the channel number;

After receiving the direct connection request sent by the second terminal, the first terminal detects whether the wireless direct connection module is activated;

When the wireless direct connection module is not activated, the first terminal starts the wireless direct connection module;

The first terminal establishes a wireless direct connection with the second terminal based on the wireless direct connection module and the obtained channel number.

To achieve the above object, the present invention further provides a wireless direct connection method, including:

When the first terminal enters the wireless direct connection mode, the channel number corresponding to the channel with the least interference in the current wireless network is obtained;

The first terminal generates a graphic code according to the channel number, so that the second terminal scans the graphic code to obtain the channel number;

After receiving the direct connection request sent by the second terminal, the first terminal performs a wireless direct connection with the second terminal according to the channel number.

Preferably, the step of acquiring the channel number corresponding to the channel with the least interference in the current wireless network includes:

The first terminal scans all channels of the current wireless network;

The channel with the strongest signal strength in the channel is used as the channel with the smallest interference, and the channel number corresponding to the channel with the least interference is obtained.

Preferably, before the step of acquiring the channel number corresponding to the channel with the least interference in the current wireless network, the wireless direct connection method includes:

When the first terminal enters the wireless direct connection mode, the first terminal compares the direct connection parameter level of the local end with a preset direct connection parameter level;

When the direct connection parameter level of the local end is equal to the preset direct connection parameter level, the step of acquiring the channel number corresponding to the channel with the least interference in the current wireless network is performed.

Preferably, the step of acquiring the channel number corresponding to the channel with the least interference in the current wireless network includes:

The first terminal scans all channels of the current wireless network;

The channel with the strongest signal strength in the channel is used as the channel with the smallest interference, and the channel number corresponding to the channel with the least interference is obtained.

Preferably, after the step of the first terminal comparing the direct connection parameter level of the local end with the preset direct connection parameter level, the wireless direct connection method includes the following steps:

When the direct connection parameter level of the local end is less than a preset direct connection parameter level, the first terminal broadcasts a direct connection request;

The first terminal displays a graphic code scanning interface;

When scanning the graphic code based on the graphic code scanning interface, the first terminal parses the graphic code to obtain a channel number;

Upon receiving the response information fed back by the direct connection request by the terminal providing the graphic code, the first terminal establishes a wireless direct connection with the terminal that provides the graphic code based on the acquired channel number.

Preferably, the step of acquiring the channel number corresponding to the channel with the least interference in the current wireless network includes:

The first terminal scans all channels of the current wireless network;

The channel with the strongest signal strength in the channel is used as the channel with the smallest interference, and the channel number corresponding to the channel with the least interference is obtained.

Preferably, the step of the first terminal performing a wireless direct connection with the second terminal according to the channel number includes:

The first terminal detects whether the wireless direct connection module is activated;

When the wireless direct connection module is not activated, the first terminal starts the wireless direct connection module;

The first terminal establishes a wireless direct connection with the second terminal based on the wireless direct connection module and the obtained channel number.

Preferably, the step of acquiring the channel number corresponding to the channel with the least interference in the current wireless network includes:

The first terminal scans all channels of the current wireless network;

The channel with the strongest signal strength in the channel is used as the channel with the smallest interference, and the channel number corresponding to the channel with the least interference is obtained.

In addition, in order to achieve the above object, the present invention further provides a wireless direct connection device, including:

An acquiring module, configured to acquire a channel number corresponding to a channel with the least interference in the current wireless network when the first terminal where the first terminal is located enters the wireless direct connection mode;

a generating module, configured to generate a graphic code according to the channel number, for the second terminal to scan the graphic code to obtain the channel number;

And a connection module, configured to: after receiving the direct connection request sent by the second terminal, the first terminal performs a wireless direct connection with the second terminal according to the channel number.

Preferably, the obtaining module comprises:

a scanning unit for scanning all channels of the current wireless network;

And an obtaining unit, configured to use a channel with the strongest signal strength in the channel as the channel with the smallest interference, and obtain a channel number corresponding to the channel with the least interference.

Preferably, the wireless direct connection device further includes:

When the comparison module is configured to enter the wireless direct connection mode, the first terminal compares the direct connection parameter level of the local end with the preset direct connection parameter level;

The acquiring module is further configured to: when the direct connection parameter level of the local end is equal to the preset direct connection parameter level, obtain a channel number corresponding to the channel with the least interference in the current wireless network.

Preferably, the obtaining module comprises:

a scanning unit for scanning all channels of the current wireless network;

And an obtaining unit, configured to use a channel with the strongest signal strength in the channel as the channel with the smallest interference, and obtain a channel number corresponding to the channel with the least interference.

Preferably, the wireless direct connection device further includes:

a broadcast module, configured to: when the direct connection parameter level of the local end is less than a preset direct connection parameter level, broadcast a direct connection request;

a display module for displaying a graphic code scanning interface;

a parsing module, configured to parse the graphic code to obtain a channel number when scanning the graphic code based on the graphic code scanning interface;

The connection module is further configured to: when receiving, by the terminal providing the graphic code, the response information that is fed back based on the direct connection request, the first terminal establishes, according to the obtained channel number, the providing the graphic code Wireless direct connection between terminals.

Preferably, the obtaining module comprises:

a scanning unit for scanning all channels of the current wireless network;

And an obtaining unit, configured to use a channel with the strongest signal strength in the channel as the channel with the smallest interference, and obtain a channel number corresponding to the channel with the least interference.

Preferably, the connection module comprises:

a detecting unit, configured to detect whether the wireless direct connection module is activated;

a startup unit, configured to start the wireless direct connection module when the wireless direct connection module is not activated;

And a connecting unit, configured to establish a wireless direct connection with the second terminal based on the wireless direct connection module and the obtained channel number.

Preferably, the obtaining module comprises:

a scanning unit for scanning all channels of the current wireless network;

And an obtaining unit, configured to use a channel with the strongest signal strength in the channel as the channel with the smallest interference, and obtain a channel number corresponding to the channel with the least interference.

The invention scans the graphic code on the terminal, parses the graphic code to obtain the channel number, and performs the Miracast connection according to the channel number, so that the terminal explicitly determines the channel number for the Miracast connection, instead of determining the channel connected by the Miracast by sequentially scanning the channel of the wireless network. No., thereby reducing the scan time of the scan of the non-connected channel and improving the efficiency of the Miracast connection.

DRAWINGS

1 is a schematic flowchart of a first embodiment of a method for connecting a wireless direct connection according to the present invention;

2 is a schematic flowchart of a second embodiment of a method for connecting a wireless direct connection according to the present invention;

3 is a schematic flowchart diagram of a third embodiment of a method for connecting a wireless direct connection according to the present invention;

4 is a schematic diagram of a refinement process of a wireless connection between a first terminal and a second terminal according to the channel number in a fourth embodiment of the method for wireless direct connection according to the present invention;

5 is a schematic flowchart of refining a channel number with minimum interference in a fifth embodiment of a method for connecting a wireless direct connection according to the present invention;

6 is a schematic diagram of functional modules of a first embodiment of a wireless direct connection device according to the present invention;

7 is a schematic diagram of functional modules of a second embodiment of a wireless direct connection device according to the present invention;

8 is a schematic diagram of functional modules of a third embodiment of a wireless direct connection device according to the present invention;

9 is a schematic diagram of a refinement function module of a connection module according to the present invention;

FIG. 10 is a schematic diagram of a refinement function module of a receiving module according to the present invention.

The implementation, functional features, and advantages of the present invention will be further described in conjunction with the embodiments.

detailed description

It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Based on the above problems, the present invention provides a wireless direct connection method.

Referring to FIG. 1, FIG. 1 is a schematic flowchart diagram of a first embodiment of a method for connecting a wireless direct connection according to the present invention.

In this embodiment, the wireless direct connection method includes:

In step S10, when the first terminal enters the wireless direct connection mode, the channel number corresponding to the channel with the least interference in the current wireless network is obtained;

In this embodiment, the Miracast event listener is registered in the first terminal, and is used for monitoring the events of the Miracast application opening and closing, device connection, and terminal. When the first terminal receives the request to open the Miracast application switch, the Miracast application switch is turned on, and all channels of the radio frequency segment used by the current wireless network are immediately scanned, and a high quality channel is selected, which can be understood as a space occupied by other signals. The channel channel number of the premium channel is obtained by the least, and the other channel with the weakest signal strength. It should be noted that, in the wireless direct connection mode, the wireless network can provide a total of 23 communication channels in a total of 13 communication channels or 5 GHz transmission bands in the 2.4 GHz transmission band.

When the first terminal enters the wireless direct mode, for example, a Miracast connection is made, the first terminal serves as a boot terminal, and the second terminal acts as a boot terminal. The second terminal sends the direct connection request to the first terminal when detecting the direct connection request triggered by the user; or the second terminal enters the current wireless network coverage, the Miracast application automatically detects the current wireless network, and triggers Directly connect to the request. The direct connection request includes opening a Miracast application switch, a terminal device connection and an interrupt. The wireless network includes, but is not limited to, Wi-Fi.

Step S20, the first terminal generates a graphic code according to the channel number, so that the second terminal scans the graphic code to obtain a channel number;

After obtaining the channel number corresponding to the channel with the smallest interference in the current wireless network, the first terminal automatically encodes the obtained channel number; or the first terminal detects the graphic code encoding instruction of the channel number, and The graphic code is encoded according to the channel number locked by the detected graphic code encoding instruction; or any other suitable manner. The graphic code includes, but is not limited to, a two-dimensional code and a barcode. In this embodiment, a two-dimensional code is taken as an example. The two-dimensional code records the data symbol information by using a certain geometric pattern in a plane (two-dimensional direction) distributed between the strip and the space between the graphics code. The second terminal obtains the channel number by scanning the two-dimensional code, confirms a channel that is directly connected to the first terminal, and waits for the return information after the direct connection request is sent.

Step S30: After receiving the direct connection request sent by the second terminal, the first terminal performs a wireless direct connection with the second terminal according to the channel number.

In this embodiment, during the establishment session of the Miracast, the first terminal and the second terminal perform function negotiation by establishing a TCP connection channel, and the first terminal encapsulates the input connection signal into a corresponding type of connection according to the preset connection signal type. Sending a signal packet to the second terminal, and the second terminal parses the received connection signal packet according to the preset connection signal type, and obtains the parsed connection signal, so as to implement the first terminal according to the The channel number is connected to the second terminal by Miracast.

The terminal can be implemented in various forms. For example, the terminal described in the present invention may include a mobile terminal or a fixed terminal. Mobile terminal, such as mobile phone, smart phone, laptop, lion broadcast receiver, PDA (Personal Digital Assistant), PAD (tablet), PMP (portable multimedia player), navigation device, etc.; fixed terminal, such as digital TV , desktop computers, etc. The mobile terminal or the fixed terminal has a relatively large screen and a small screen. In this embodiment, the first terminal can be considered as a fixed terminal with a relatively large screen, and the second terminal is a mobile terminal with a relatively small screen. For example, by turning on the Miracast connection between two terminals, the user can let the content on the smartphone be projected onto a large screen such as a smart TV through the wireless network; or, the user can also let the content on the smart TV screen be projected to the smartphone through the wireless network. Wait for small screen terminal devices.

The invention scans the graphic code on the terminal, parses the graphic code to obtain the channel number, and performs the Miracast connection according to the channel number, so that the terminal explicitly determines the channel number for the Miracast connection, instead of determining the channel connected by the Miracast by sequentially scanning the channel of the wireless network. No., thereby reducing the scan time of the scan of the non-connected channel and improving the efficiency of the Miracast connection.

Further, based on the first embodiment, a second embodiment of the wireless direct connection method of the present invention is proposed. In the embodiment, before the step S10 in FIG. 2, the method further includes:

Step S40: When the first terminal enters the wireless direct connection mode, the first terminal compares the direct connection parameter level of the local end with the preset direct connection parameter level;

In this embodiment, in the first terminal system, the direct connection parameter in the set wireless network program is read, and the level of the direct connection parameter is determined. The user can set the direct connection parameter p2p_go_intent in the wireless network direct connection configuration file p2p_supplicant of the first terminal system to different levels, and directly connect the parameter level to determine whether the first terminal is used as the leading end when the direct connection is directly connected. As the guided end. When the first terminal enters the wireless direct connection mode, the direct connection parameter level of the local end and the preset direct connection parameter level are compared. The direct connection profile is read from a wireless network program. For example, the level of the direct connection parameter p2p_go_intent in the Wi-Fi Direct configuration file p2p_supplicant in the terminal system has two forms p2p_go_intent=15 or p2p_go_intent<15.

When the direct connection parameter level of the local end is equal to the preset direct connection parameter level, step S10 is performed to obtain the channel number corresponding to the channel with the least interference in the current wireless network.

In this embodiment, the terminal system sets different levels of the parameter p2p_go_intent in the wireless direct connection configuration file p2p_supplicant in the wireless network, and the terminal exchanges between the leading end and the guided end, that is, the terminal is generated. The graphic code terminal and the scanned graphic code terminal are interchanged. When the direct connection parameter level of the local end is equal to the preset direct connection parameter level, that is, the level of the direct connection parameter p2p_go_intent in the Wi-Fi Direct configuration file p2p_supplicant in the terminal system is p2p_go_intent=15, the first terminal determines to be the guidance. End, scan the channel of the wireless network in the current environment, and obtain the channel number corresponding to the channel with the least interference in the wireless network. The leading end includes a feedback direct connection request, a graphic code, a scanning wireless network signal, and the like.

It can be understood by those skilled in the art that the terminal can determine whether the local end is the leading end or the leading end by comparing the direct connection parameter level of the local end with the preset direct connection parameter level, so that the local end performs different functions. Features.

Further, based on the first or second embodiment, a third embodiment of the wireless direct connection method of the present invention is proposed. In this embodiment, after referring to step S40 in FIG. 3, the method further includes:

Step S50: The first terminal broadcasts a direct connection request when the direct connection parameter level of the local end is less than a preset direct connection parameter level;

In this embodiment, the highest priority set by the direct connection parameter p2p_go_intent in the directly connected configuration file p2p_supplicant of the first terminal in the wireless network is less than 15, and it is determined that the first terminal is a scanned graphic code terminal. The boot end. The wireless direct connection module of the first terminal automatically broadcasts the direct connection request; or the wireless direct connection module that triggers the first terminal based on the user broadcasts the direct connection request. The receiving end of the direct connection request is not limited to one, and there may be multiple.

Step S60, the first terminal displays a graphic code scanning interface;

After the first terminal broadcasts the direct connection request, the user may click the information prompt of the direct connection request broadcast to directly enter the first terminal to display the graphic code scanning interface, for example, double-click the graphic code scanning interface shortcut icon on the lock screen interface; or the user Find the graphic code scanning interface application to display the graphic code scanning interface after clicking.

Specifically, the wireless network broadcasts the prompt installation information of the associated application to the terminal within the coverage of the wireless network signal in which it is located. The terminal that scans the graphic code terminal and does not install the associated application needs to download and install the associated application according to the corresponding prompting step after receiving the prompting installation information. The associated application is an application that recognizes a two-dimensional code, which may be in the format of an APP. The wireless network includes, but is not limited to, a Wi-Fi wireless network. The wireless network signal coverage area may be, for example, a wireless router installed in the room, the coverage of the wireless network signal is the area where the room is located; the wireless router is installed in the public place, and the wireless network signal coverage is in a public place. The area where you are.

Step S70: When scanning the graphic code based on the graphic code scanning interface, the first terminal parses the graphic code to obtain a channel number;

When the first terminal uses the associated application scan to identify an external two-dimensional code, the associated application acquires a channel number corresponding to the two-dimensional code. After the first terminal monitors the two-dimensional code parsing event and obtains the channel number for the Miracast connection, the first terminal automatically opens the Miracast switch according to the channel number. The first terminal sends a direct connection request to the terminal that provides the graphic code, and waits for feedback information on the acquired channel. Here, the terminal that provides the graphic code may be the second terminal, or may be other terminals in the current wireless network.

Step S80, when receiving the response information fed back by the terminal that provides the graphic code based on the direct connection request, the first terminal establishes a wireless relationship with the terminal that provides the graphic code based on the acquired channel number. Direct connection.

When the direct connection is performed, the terminal that provides the graphic code is a leading end, and generates a graphic code for the first terminal to perform a scanning operation based on the graphic code, where the first terminal is a guided end. The terminal that provides the graphic code detects the direct connection request and generates wireless direct connection information to return to the first terminal. The terminal that provides the graphic code may receive a plurality of terminals to send a direct connection request, and feed back response information to the multiple terminals based on the direct connection request. After receiving the response information on the acquired channel, the first terminal performs a Miracast connection with the first terminal according to the channel number.

The following describes how the above method is implemented by a specific embodiment.

In the room, the television terminal, that is, the second terminal scans all channels of the current wireless network signal coverage, determines a good channel, obtains the channel number of the premium channel, and generates a two-dimensional code image according to the channel number. The two-dimensional code image may be displayed on the screen of the television end in the form of an icon, or may be printed and posted in the room. The television terminal sends a broadcast of the prompt information of the related application that installs the Miracast connection. After the user enters the coverage of the wireless network signal, the broadcast of the prompt information of the related application for installing the Miracast connection is accepted, and the associated application is installed according to the broadcast prompt. The mobile terminal, that is, the first terminal scans the two-dimensional code image, acquires a channel number of a wireless network corresponding to the two-dimensional code image, and automatically sends the same to the other terminal that provides the two-dimensional code image, that is, the television end. The direct connection request, after receiving the response information, establishes a Miracast connection with the television end.

In this embodiment, the first terminal sends a direct connection request to the terminal that provides the graphic code, and the first terminal provides a graphic code scanning interface, so that the first terminal is exchanged from the leading end to the guided end, which is effective. The problem that both the leading end and the guided end need to scan the wireless network channel and increase the scanning time is solved.

Further, based on the first embodiment, a fourth embodiment of the wireless direct connection method of the present invention is proposed. In this embodiment, referring to FIG. 4, the foregoing step S30 includes:

Step S31: The first terminal detects whether the wireless direct connection module is started.

After receiving the direct connection request sent by the second terminal, determining whether the wireless direct connection module of the first terminal is started. The wireless direct connection module monitors the direct connection request, the Miracast switch, the connection status of the device, and sends an instruction to the local end to open the Miracast switch. When the current Miracast switch is turned on, the Miracast connection will be made directly.

Step S32, when the wireless direct connection module is not activated, the first terminal starts the wireless direct connection module;

If the wireless direct connection module is not turned on, the first terminal receives an instruction for opening the Miracast switch sent by the local end, and obtains a channel number obtained from the graphic code parsed by the local end, according to the instruction for opening the Miracast switch. And the channel number automatically turns on the wireless direct connection module; or, based on the user triggers the Miracast switch.

Step S33: The first terminal establishes a wireless direct connection with the second terminal based on the wireless direct connection module and the obtained channel number.

In this embodiment, the second terminal receives the connection signal and the real-time control of the first terminal by using the Miracast protocol, and displays the content sharing on the screen of the first terminal on the screen of the second terminal, by using the second terminal. The terminal hardware system decodes and encodes the signal to deliver a signal suitable for the large screen to the small screen. The receiving the connection signal and the real-time manipulation of the first end by the Miracast protocol includes establishing a TCP connection channel for function negotiation.

Or the second terminal receives the connection signal and the real-time control of the first terminal by using the Miracast protocol, and displays the content sharing on the second terminal screen on the first terminal screen, and the first terminal hardware system The signal is decoded and encoded to deliver a suitable small screen signal to the large screen.

It can be understood by those skilled in the art that when the Miracast application is not used, the switch of the Miracast application is turned off, reducing the power consumption of the terminal and reducing the occupation of the wireless network by the terminal; and obtaining the command and channel number for opening the Miracast switch. Automatically turn on the switch of the Miracast app to improve the app experience.

Further, based on any of the foregoing embodiments, a fifth embodiment of the wireless direct connection method of the present invention is proposed. In this embodiment, the foregoing step S10 includes:

Step S11, the first terminal scans all channels of the current wireless network;

After the first terminal compares the direct connection parameter level of the local end with the direct connection parameter level preset by the local end, after determining that the direct connection parameter level of the local end is the highest priority 15, the first terminal scans the current wireless network channel for the leading end. The first terminal detects the current wireless network signal.

Step S22: The channel with the strongest signal strength in the channel is used as the channel with the smallest interference, and the channel number corresponding to the channel with the least interference is obtained.

In this embodiment, the first terminal selects a wireless network with the strongest signal strength in the current wireless network;

Or, when the first terminal detects the wireless network, setting a wireless network signal strength threshold, if the detected signal strength is less than the preset wireless network signal strength threshold, then giving up and continuing to detect the wireless network signal strength in the current environment. Until the wireless network signal whose channel strength is greater than the wireless network signal strength threshold is detected. If the detected wireless network signal whose channel strength is greater than the wireless network signal strength threshold is greater than one, the signal strengths are compared to obtain a wireless network signal with the highest signal strength, and the first terminal bottom layer starts the wireless network scanning function, and acquires the The channel and channel/bandwidth occupancy status information contained in the wireless network is allowed/disabled to use channel/bandwidth status information.

It can be understood by those skilled in the art that when the terminal is connected to Wi-Fi, a channel with a relatively strong Wi-Fi signal is preferentially selected for connection. The space occupied by other signals in the channel where the signal is relatively strong is small, and the strength of the other signals is weak. Therefore, the channel with a relatively strong signal has small interference and smooth communication. Therefore, when performing the Miracast connection, the terminal preferentially scans the channel with weak Wi-Fi signal, determines the channel with the strongest signal as the quality channel, and acquires the channel number of the high-quality channel.

The invention further provides a wireless direct connection device.

Referring to FIG. 6, FIG. 6 is a schematic diagram of functional modules of a first embodiment of a wireless direct connection device according to the present invention.

In this embodiment, the device includes: an obtaining module 10, a generating module 20, and a connecting module 30.

The obtaining module 10 is configured to acquire, when the first terminal where the first terminal is located, enter a wireless direct connection mode, obtain a channel number corresponding to a channel with the least interference in the current wireless network;

In this embodiment, the Miracast event listener is registered in the connection module 30 of the first terminal, and is used for monitoring the events of the Miracast application opening and closing, device connection, and terminal. When the receiving module 10 of the first terminal receives the request to open the Miracast application switch, the Miracast application switch is opened, and all channels of the radio frequency segment used by the current wireless network are immediately scanned, and a high quality channel is selected, and the high quality channel can be understood as being The other signals occupy the least space, and the other channels with the weakest signal strength are the best, and the channel number of the good channel is obtained. It should be noted that, in the wireless direct connection mode, the wireless network can provide a total of 23 communication channels in a total of 13 communication channels or 5 GHz transmission bands in the 2.4 GHz transmission band.

When a wireless direct connection is made, for example, a Miracast connection is made, the first terminal serves as a boot terminal, and the second terminal serves as a boot terminal. When the second terminal detects the direct connection request triggered by the user, the second terminal sends the direct connection request to the receiving module 10 of the first terminal; or the second terminal enters the current wireless network coverage, and the Miracast application automatically Detects the current wireless network and triggers a direct connection request. The direct connection request includes opening a Miracast application switch, a terminal device connection and an interrupt. The wireless network includes, but is not limited to, Wi-Fi.

The generating module 20 is configured to generate a graphic code according to the channel number, so that the second terminal scans the graphic code to obtain the channel number;

After obtaining the channel number corresponding to the channel with the smallest interference in the current wireless network, the channel number of the generating module 20 is automatically graphically encoded; or the generating module 20 detects the graphic code encoding instruction of the channel number. And performing graphic code encoding according to the channel number locked by the detected graphic code encoding instruction; or any other applicable manner. The graphic code includes, but is not limited to, a two-dimensional code and a barcode. In this embodiment, a two-dimensional code is taken as an example. The two-dimensional code records the data symbol information by using a certain geometric pattern in a plane (two-dimensional direction) distributed between the strip and the space between the graphics code. The second terminal obtains the channel number by scanning the two-dimensional code, confirms a channel that is directly connected to the first terminal, and waits for the return information after the direct connection request is sent.

The connection module 30 is configured to: after receiving the direct connection request sent by the second terminal, the first terminal performs a wireless direct connection with the second terminal according to the channel number.

In this embodiment, during the establishment session of the Miracast, the connection module 30 of the first terminal and the second terminal perform function negotiation by establishing a TCP connection channel, and the connection module 30 inputs the input connection signal according to the preset connection signal type. The connection signal packet encapsulated into a corresponding type is sent to the second terminal, and the second terminal parses the received connection signal packet according to the preset connection signal type, and obtains the parsed connection signal, and implements the The first terminal performs a Miracast connection with the second terminal according to the channel number.

The terminal can be implemented in various forms. For example, the terminal described in the present invention may include a mobile terminal or a fixed terminal. Mobile terminal, such as mobile phone, smart phone, laptop, lion broadcast receiver, PDA (Personal Digital Assistant), PAD (tablet), PMP (portable multimedia player), navigation device, etc.; fixed terminal, such as digital TV , desktop computers, etc. The mobile terminal or the fixed terminal has a relatively large screen and a small screen. In this embodiment, the first terminal can be considered as a fixed terminal with a relatively large screen, and the second terminal is a mobile terminal with a relatively small screen. For example, by turning on the Miracast connection between two terminals, the user can let the content on the smartphone be projected onto a large screen such as a smart TV through the wireless network; or, the user can also let the content on the smart TV screen be projected to the smartphone through the wireless network. Wait for small screen terminal devices.

In this embodiment, by scanning the graphic code on the terminal, parsing the graphic code to obtain the channel number, and performing the Miracast connection according to the channel number, so that the terminal explicitly determines the channel number for the Miracast connection, instead of determining the Miracast connection by sequentially scanning the channel of the wireless network. The channel number, thereby reducing the scan time for scanning the non-connected channel and improving the efficiency of the Miracast connection.

Referring to FIG. 7, FIG. 7 is a schematic diagram of functional modules of a second embodiment of a wireless direct connection device according to the present invention.

In this embodiment, the device further includes: a comparison module 40.

When the comparison module 40 is configured to enter the wireless direct connection mode, the first terminal compares the direct connection parameter level of the local end with a preset direct connection parameter level;

In this embodiment, in the comparison module 40, the direct connection parameter in the set wireless network program is read, and the level of the direct connection parameter is determined. The user can set the direct connection parameter p2p_go_intent in the wireless network direct connection configuration file p2p_supplicant of the comparison module 40 to different levels, and directly connect the parameter level to determine whether the first terminal is used as the leading end when the direct connection is directly connected. As the guided end. When the first terminal enters the wireless direct connection mode, the comparison module 40 compares the direct connection parameter level of the local end with the size of the preset direct connection parameter level. The direct connection profile is read from a wireless network program. For example, the level of the direct connection parameter p2p_go_intent in the Wi-Fi Direct configuration file p2p_supplicant in the terminal system has two forms p2p_go_intent=15 or p2p_go_intent<15.

The obtaining module 10 obtains the channel number corresponding to the channel with the least interference in the current wireless network when the direct connection parameter level of the local end is equal to the preset direct connection parameter level.

In this embodiment, the terminal system has different levels in the direct connection parameter p2p_go_intent setting in the wireless direct connection configuration file p2p_supplicant in the wireless network, and the terminal exchanges between the leading end and the guided end, that is, the terminal The interchange between the generated graphics terminal and the scanned graphics terminal is performed. The obtaining module 10 detects that the direct connection parameter level of the local end is equal to the preset direct connection parameter level, that is, when the direct connection parameter p2p_go_intent of the Wi-Fi direct connection configuration file p2p_supplicant in the terminal system is set to p2p_go_intent=15, The first terminal is determined to be a leading end, and scans a channel of the wireless network in the current environment to obtain a channel number corresponding to the channel with the least interference in the wireless network.

It can be understood by those skilled in the art that the terminal can determine whether the local end is the leading end or the leading end by comparing the direct connection parameter level of the local end with the preset direct connection parameter level, so that the local end performs different functions. Features.

Referring to FIG. 8, FIG. 8 is a schematic diagram of functional modules of a third embodiment of a wireless direct connection device according to the present invention.

In this embodiment, the device further includes: a broadcast module 60, a display module 70, and a parsing module 80.

The broadcast module 50 is configured to: when the direct connection parameter level of the local end is less than a preset direct connection parameter level, broadcast a direct connection request;

In this embodiment, the highest priority set by the direct connection parameter p2p_go_intent in the direct connection configuration file p2p_supplicant of the first terminal acquired by the obtaining module 10 is less than 15, and the second terminal is determined to be a scan. Graphic code terminal. The wireless direct connection module of the broadcast module 50 of the first terminal automatically broadcasts a direct connection request; or the broadcast module 50 broadcasts a request based on a wireless direct connection module triggered by the user to trigger the first terminal. The receiving end of the direct connection request is not limited to one, and there may be multiple.

The display module 60 is configured to display a graphic code scanning interface;

After the broadcast module 50 of the first terminal broadcasts the direct connection request, the user may click the information of the direct connection request broadcast to directly enter the graphic code scanning interface displayed by the display module 60 of the first terminal, for example, double-clicking the lock. The graphic code scanning interface shortcut icon on the screen interface; or the user finds the graphic code scanning interface application to display the graphic code scanning interface after clicking.

Specifically, the wireless network broadcasts the prompt installation information of the associated application to the terminal within the coverage of the wireless network signal in which it is located. The terminal that scans the graphic code terminal and does not install the associated application, after receiving the prompt installation information, the user can download and install the associated application according to the corresponding prompting step. The associated application is an application that recognizes a two-dimensional code, which may be in the format of an APP. The wireless network includes, but is not limited to, a Wi-Fi wireless network. The wireless network signal coverage area may be, for example, a wireless router installed in the room, the coverage of the wireless network signal is the area where the room is located; the wireless router is installed in the public place, and the wireless network signal coverage is in a public place. The area where you are.

The parsing module 70 is configured to parse the graphic code to obtain a channel number when scanning the graphic code based on the graphic code scanning interface.

When the parsing module 70 uses the associated application scan to identify an external two-dimensional code, the associated application acquires a channel number corresponding to the two-dimensional code. After the connection module 30 of the first terminal monitors the two-dimensional code parsing event and obtains the channel number for the Miracast connection, the first terminal automatically opens the Miracast switch according to the channel number. The first terminal sends a direct connection request to the terminal that provides the graphic code, and waits for feedback information on the acquired channel. Here, the terminal that provides the graphic code may be the second terminal, or may be other terminals in the current wireless network.

The connection module 30 is further configured to: when receiving, by the terminal that provides the graphic code, response information that is fed back based on the direct connection request, the first terminal establishes and provides the Wireless direct connection between terminals of graphics code.

When the direct connection is performed, the terminal that provides the graphic code is a leading end, and generates a graphic code for the first terminal to perform a scanning operation based on the graphic code, where the first terminal is a guided end. The terminal that provides the graphic code detects the direct connection request and generates wireless direct connection information to return to the first terminal. The terminal that provides the graphic code may receive a plurality of terminals to send a direct connection request, and feed back response information to the multiple terminals based on the direct connection request. After receiving the response information on the acquired channel, the connection module 30 performs a Miracast connection with the first terminal according to the channel number.

The following describes how the above method is implemented by a specific embodiment.

In the room, the television terminal, that is, the second terminal scans all channels of the current wireless network signal coverage, determines a good channel, obtains the channel number of the premium channel, and generates a two-dimensional code image according to the channel number. The two-dimensional code image may be displayed on the screen of the television end in the form of an icon, or may be printed and posted in the room. The television terminal sends a broadcast of the prompt information of the related application that installs the Miracast connection. After the user enters the coverage of the wireless network signal, the broadcast of the prompt information of the related application for installing the Miracast connection is accepted, and the associated application is installed according to the broadcast prompt. The mobile terminal, that is, the first terminal scans the two-dimensional code image, acquires a channel number of a wireless network corresponding to the two-dimensional code image, and automatically sends the same to the other terminal that provides the two-dimensional code image, that is, the television end. The direct connection request, after receiving the response information, establishes a Miracast connection with the television end.

In this embodiment, the first terminal sends a direct connection request to the terminal that provides the graphic code, and the first terminal provides a graphic code scanning interface, so that the first terminal is exchanged from the leading end to the guided end, which is effective. The problem that both the leading end and the guided end need to scan the wireless network channel and increase the scanning time is solved.

Referring to FIG. 9, FIG. 9 is a schematic diagram of functional modules of an embodiment of a connection module 30 according to the present invention.

In the embodiment, the connection module 30 includes a detecting unit 31, a starting unit 32, and a connecting unit 33.

The detecting unit 31 is configured to detect whether the wireless direct connection module is activated.

After receiving the direct connection request sent by the second terminal, the detecting unit 31 determines whether the wireless direct connection module of the first terminal is activated. The wireless direct connection module monitors the direct connection request, the Miracast switch, the connection status of the device, and sends an instruction to the local end to open the Miracast switch. The detecting unit 31 detects that the Miracast connection is directly performed when the current Miracast switch is turned on.

The initiating unit 32 is configured to start the wireless direct connection module when the wireless direct connection module is not activated;

The detecting unit 31 detects that the local terminal does not turn on the wireless direct connection module, and the starting unit 32 of the first terminal receives the instruction to open the Miracast switch sent by the local end, and obtains the graphic code parsed from the local end. The channel number to be obtained, the wireless direct connection module is automatically turned on according to the instruction to open the Miracast switch and the channel number; or the Miracast switch is triggered based on the user.

The connecting unit 33 is configured to establish a wireless direct connection with the second terminal based on the wireless direct connection module and the obtained channel number.

In this embodiment, the connection unit 33 of the second terminal receives the connection signal and real-time control of the first terminal by using the Miracast protocol, and displays the content sharing on the screen of the first terminal on the second terminal screen. The signal is decoded and encoded by the connecting unit 33 of the second terminal, so that a signal of a suitable large screen is transmitted to the small screen. The receiving the connection signal and the real-time manipulation of the first end by the Miracast protocol includes establishing a TCP connection channel for function negotiation.

Or the connection unit 33 of the second terminal receives the connection signal of the first terminal and the real-time manipulation by using the Miracast protocol, and displays the content sharing on the second terminal screen on the first terminal screen, by using the The first terminal hardware system decodes and encodes the signal to deliver a suitable small screen signal to the large screen.

It can be understood by those skilled in the art that when the Miracast application is not used, the switch of the Miracast application is turned off, reducing the power consumption of the terminal and reducing the occupation of the wireless network by the terminal; and obtaining the command and channel number for opening the Miracast switch. Automatically turn on the switch of the Miracast app to improve the app experience.

Referring to FIG. 10, FIG. 10 is a schematic diagram of functional modules of an embodiment of the acquisition module 10 of the present invention.

In this embodiment, the obtaining module 10 includes a scanning module 11 and an obtaining unit 12.

The scanning unit 11 is configured to scan all channels of the current wireless network;

After the first terminal compares the direct connection parameter level of the local end with the direct connection parameter level preset by the local end, and determines that the direct connection parameter level of the local end is the highest priority 15, the first terminal is the leading end, and the scanning unit is adopted. 11 Scan the current wireless network channel. The first terminal detects the current wireless network signal.

The acquiring unit 12 is configured to use a channel with the strongest signal strength in the channel as the channel with the smallest interference, and obtain a channel number corresponding to the channel with the smallest interference.

In this embodiment, the acquiring unit 12 of the first terminal selects a wireless network with the strongest signal strength in the current wireless network;

Or, in the first terminal, the acquiring unit 12 sets a wireless network signal strength threshold in advance when detecting the wireless network, and if the detected signal strength is less than the preset wireless network signal strength threshold, abandoning and continuing to detect the current The wireless network signal strength in the environment until a wireless network signal with a channel strength greater than the wireless network signal strength threshold is detected. If the detected wireless network signal whose channel strength is greater than the wireless network signal strength threshold is greater than one, the signal strengths are compared to obtain the wireless network signal with the strongest signal strength, and the first terminal bottom layer starts the wireless network scanning function to obtain The channel and channel/bandwidth occupancy status information contained in the wireless network allows/disables the use of channel/bandwidth status information.

It can be understood by those skilled in the art that when the terminal is connected to Wi-Fi, a channel with a relatively strong Wi-Fi signal is preferentially selected for connection. The space occupied by other signals in the channel where the signal is relatively strong is small, and the strength of the other signals is weak. Therefore, the channel with a relatively strong signal has small interference and smooth communication. Therefore, when performing the Miracast connection, the terminal preferentially scans the channel with weak Wi-Fi signal, determines the channel with the strongest signal as the quality channel, and acquires the channel number of the high-quality channel.

The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the present invention and the drawings are directly or indirectly applied to other related technical fields. The same is included in the scope of patent protection of the present invention.

Claims (17)

A wireless direct connection method, comprising the steps of: When the first terminal enters the wireless direct connection mode, the first terminal compares the direct connection parameter level of the local terminal with the preset direct connection parameter level; When the direct connection parameter level of the local end is equal to the preset direct connection parameter level, obtain the channel number corresponding to the channel with the least interference in the current wireless network; The first terminal generates a graphic code according to the channel number, so that the second terminal scans the graphic code to obtain the channel number; After receiving the direct connection request sent by the second terminal, the first terminal detects whether the wireless direct connection module is activated; When the wireless direct connection module is not activated, the first terminal starts the wireless direct connection module; The first terminal establishes a wireless direct connection with the second terminal based on the wireless direct connection module and the obtained channel number. A wireless direct connection method, comprising the steps of: When the first terminal enters the wireless direct connection mode, the channel number corresponding to the channel with the least interference in the current wireless network is obtained; The first terminal generates a graphic code according to the channel number, so that the second terminal scans the graphic code to obtain the channel number; After receiving the direct connection request sent by the second terminal, the first terminal performs a wireless direct connection with the second terminal according to the channel number. The wireless direct connection method according to claim 2, wherein the step of acquiring a channel number corresponding to a channel with the least interference in the currently located wireless network comprises: The first terminal scans all channels of the current wireless network; The channel with the strongest signal strength in the channel is used as the channel with the smallest interference, and the channel number corresponding to the channel with the least interference is obtained. The wireless direct connection method according to claim 2, wherein before the step of acquiring a channel number corresponding to a channel with the least interference in the current wireless network, the wireless direct connection method includes: When the first terminal enters the wireless direct connection mode, the first terminal compares the direct connection parameter level of the local end with a preset direct connection parameter level; When the direct connection parameter level of the local end is equal to the preset direct connection parameter level, the step of acquiring the channel number corresponding to the channel with the least interference in the current wireless network is performed. The wireless direct connection method according to claim 4, wherein the step of acquiring a channel number corresponding to a channel with the least interference in the currently located wireless network comprises: The first terminal scans all channels of the current wireless network; The channel with the strongest signal strength in the channel is used as the channel with the smallest interference, and the channel number corresponding to the channel with the least interference is obtained. The wireless direct connection method according to claim 4, wherein after the step of comparing the direct connection parameter level of the local terminal with the preset direct connection parameter level, the wireless direct connection method Including steps: When the direct connection parameter level of the local end is less than a preset direct connection parameter level, the first terminal broadcasts a direct connection request; The first terminal displays a graphic code scanning interface; When scanning the graphic code based on the graphic code scanning interface, the first terminal parses the graphic code to obtain a channel number; Upon receiving the response information fed back by the direct connection request by the terminal providing the graphic code, the first terminal establishes a wireless direct connection with the terminal that provides the graphic code based on the acquired channel number. The wireless direct connection method according to claim 6, wherein the step of acquiring a channel number corresponding to a channel with the least interference in the current wireless network includes: The first terminal scans all channels of the current wireless network; The channel with the strongest signal strength in the channel is used as the channel with the smallest interference, and the channel number corresponding to the channel with the least interference is obtained. The wireless direct connection method according to claim 2, wherein the step of the first terminal performing a wireless direct connection with the second terminal according to the channel number comprises: The first terminal detects whether the wireless direct connection module is activated; When the wireless direct connection module is not activated, the first terminal starts the wireless direct connection module; The first terminal establishes a wireless direct connection with the second terminal based on the wireless direct connection module and the obtained channel number. The wireless direct connection method according to claim 8, wherein the step of acquiring a channel number corresponding to a channel with the least interference in the currently located wireless network comprises: The first terminal scans all channels of the current wireless network; The channel with the strongest signal strength in the channel is used as the channel with the smallest interference, and the channel number corresponding to the channel with the least interference is obtained. A wireless direct connection device, comprising: An acquiring module, configured to acquire a channel number corresponding to a channel with the least interference in the current wireless network when the first terminal where the first terminal is located enters the wireless direct connection mode; a generating module, configured to generate a graphic code according to the channel number, for the second terminal to scan the graphic code to obtain the channel number; And a connection module, configured to: after receiving the direct connection request sent by the second terminal, the first terminal performs a wireless direct connection with the second terminal according to the channel number. The wireless direct connection device according to claim 10, wherein the obtaining module comprises: a scanning unit for scanning all channels of the current wireless network; And an obtaining unit, configured to use a channel with the strongest signal strength in the channel as the channel with the smallest interference, and obtain a channel number corresponding to the channel with the least interference. The wireless direct connection device of claim 10, wherein the wireless direct connection device further comprises: When the comparison module is configured to enter the wireless direct connection mode, the first terminal compares the direct connection parameter level of the local end with the preset direct connection parameter level; The acquiring module is further configured to: when the direct connection parameter level of the local end is equal to the preset direct connection parameter level, obtain a channel number corresponding to the channel with the least interference in the current wireless network. The wireless direct connection device according to claim 12, wherein the obtaining module comprises: a scanning unit for scanning all channels of the current wireless network; And an obtaining unit, configured to use a channel with the strongest signal strength in the channel as the channel with the smallest interference, and obtain a channel number corresponding to the channel with the least interference. The wireless direct connection device of claim 12, wherein the wireless direct connection device further comprises: a broadcast module, configured to: when the direct connection parameter level of the local end is less than a preset direct connection parameter level, broadcast a direct connection request; a display module for displaying a graphic code scanning interface; a parsing module, configured to parse the graphic code to obtain a channel number when scanning the graphic code based on the graphic code scanning interface; The connection module is further configured to: when receiving, by the terminal providing the graphic code, the response information that is fed back based on the direct connection request, the first terminal establishes, according to the obtained channel number, the providing the graphic code Wireless direct connection between terminals. The wireless direct connection device according to claim 14, wherein the obtaining module comprises: a scanning unit for scanning all channels of the current wireless network; And an obtaining unit, configured to use a channel with the strongest signal strength in the channel as the channel with the smallest interference, and obtain a channel number corresponding to the channel with the least interference. The wireless direct connection device according to claim 10, wherein the connection module comprises: a detecting unit, configured to detect whether the wireless direct connection module is activated; a startup unit, configured to start the wireless direct connection module when the wireless direct connection module is not activated; And a connecting unit, configured to establish a wireless direct connection with the second terminal based on the wireless direct connection module and the obtained channel number. The wireless direct connection device according to claim 16, wherein the obtaining module comprises: a scanning unit for scanning all channels of the current wireless network; And an obtaining unit, configured to use a channel with the strongest signal strength in the channel as the channel with the smallest interference, and obtain a channel number corresponding to the channel with the least interference.