WO2023035834A1

WO2023035834A1 - Wi-fi direct communication method and apparatus

Info

Publication number: WO2023035834A1
Application number: PCT/CN2022/111118
Authority: WO
Inventors: 周志伟; 陶华涛; 王元发; 吴正; 姜印清
Original assignee: 华为技术有限公司
Priority date: 2021-09-10
Filing date: 2022-08-09
Publication date: 2023-03-16
Also published as: CN115802516A

Abstract

The present application relates to the field of communications, discloses a Wi-Fi direct communication method and apparatus, and provides a technical solution for establishing Wi-Fi P2P between terminal devices respectively belonging to different P2P groups. The method comprises: a second terminal device receiving a Wi-Fi P2P connection establishment request that is initiated by a first terminal device, or the second terminal device initiating the Wi-Fi P2P connection establishment request for the first terminal device, wherein the second terminal device belongs to a second peer-to-peer (P2P) group, and the first terminal device belongs to a first P2P group; the second terminal device performing a P2P group combination negotiation with the first terminal device, so as to obtain a negotiation result, wherein the negotiation result is used for instructing same to combine the second P2P group and the first P2P group into a third P2P group; and the second terminal device establishing, in the third P2P group, a Wi-Fi P2P connection with the first terminal device.

Description

A Wi-Fi direct connection communication method and device

Cross References to Related Applications

This application claims the priority of the Chinese patent application submitted to the Intellectual Property Office of the People's Republic of China on September 10, 2021, with the application number 202111063130.6 and the application title "A Wi-Fi Direct Communication Method and Device", the entire content of which Incorporated in this application by reference.

technical field

The embodiments of the present application relate to the field of communication technologies, and in particular, to a Wi-Fi Direct communication method and device.

Background technique

A wireless-fidelity (Wi-Fi) direct (also called "Wi-Fi P2P") technology is a typical technology in the Wi-Fi protocol cluster. Wi-Fi Direct can connect terminal devices to each other without an intermediary wireless access point (access point, AP).

Currently, in the Wi-Fi Direct technical standard protocol, there is a peer-to-peer (P2P) group owner (group owner, GO) and at least one P2P group client (group client, GC). A P2P group, GO can realize data exchange with each GC in this P2P group. However, in the existing Wi-Fi direct technology, there is a problem that Wi-Fi P2P cannot be established between terminal devices belonging to different P2P groups.

Contents of the invention

The embodiment of the present application provides a Wi-Fi direct communication method and device to solve the problem that existing Wi-Fi direct technology cannot establish Wi-Fi P2P between terminal devices that belong to different P2P groups. The problem.

In the first aspect, an embodiment of the present application provides a Wi-Fi direct communication method, the method comprising: the second terminal device receives a request for establishing a Wi-Fi P2P connection initiated by the first terminal device, or the second terminal device The device initiates a Wi-Fi P2P connection establishment request to the first terminal device, the second terminal device belongs to the second point-to-point P2P group, the first terminal device belongs to the first P2P group; the second terminal device Negotiating with the first terminal device on P2P group merging, and obtaining a negotiation result, the negotiation result is used to indicate that the second P2P group and the first P2P group are merged into a third P2P group; The second terminal device establishes a Wi-Fi P2P connection with the first terminal device in the third P2P group.

Through this method, when there is a scenario where a Wi-Fi P2P connection needs to be established between the first terminal device and the second terminal device belonging to different P2P groups, the implementation method of group merging of multiple different P2P groups is adopted, Specifically, it can be implemented as a negotiation process of group merging of the first terminal device and the second terminal device. After one of the P2P groups is disconnected, the GC of another P2P group is connected to the GO of the other P2P group. Thus, a new P2P group including terminal devices of multiple original different P2P groups is obtained, and then Wi-Fi direct communication between terminal devices among the original multiple different P2P groups can be established through the new P2P group.

In a possible design, before the second terminal device negotiates with the first terminal device on P2P group merging, the method further includes: the second terminal device sends to the first terminal device Second P2P state information, the second P2P state information is used to indicate the second P2P group; and the second terminal device receives the first P2P state information sent by the first terminal device, the first P2P The status information is used to indicate the first P2P group. The negotiation of P2P group merging between the second terminal device and the first terminal device includes: the second terminal device, based on the second P2P status information and the first P2P status information, negotiates with the first P2P status information A terminal device performs negotiation on P2P group merging.

In this design, the second terminal device and the first terminal device share the P2P state information indicating the P2P group, which can realize the combination of the second terminal device and the first terminal device based on the second P2P state information and the first P2P state information. negotiate. Therefore, in the merged P2P group, P2P communication between the first terminal device and the second terminal device can be realized.

In a possible design, the negotiation between the second terminal device and the first terminal device on P2P group merging includes: determining, by the second terminal device, the second group owner GO in the second P2P group role and the role of the first GO in the first P2P group; the second terminal device determines that the second GO or the first GO is the third GO in the third P2P group based on a preset merging rule ; The second terminal device outputs a negotiation result according to the third GO; wherein, if it is determined that the second GO is the third GO, the negotiation result is to merge the first P2P group into the In the second P2P group; if it is determined that the first GO is the third GO, the negotiation result is to merge the second P2P group into the first P2P group.

In this design, the second terminal device and the first terminal device first determine the merged GO role of the third P2P group based on the first GO role of the first P2P group and the second GO role of the second P2P group, so that Merging the P2P groups to which the first terminal device and the second terminal device respectively belong is implemented to obtain a merged P2P group.

In a possible design, if the negotiation result is the merging of the second P2P group into the first P2P group, the method further includes: the second terminal device The service state of the P2P group, saving the service information of the second P2P group; the second terminal device and the second GO perform P2P group unlinking, and the P2P group unlinking is used to disconnect the second terminal device from the second GO The Wi-Fi P2P connection of the second GO; the second terminal device initiates a Wi-Fi P2P connection request to the third GO; the second terminal device receives a confirmation message from the third GO, and the The confirmation message is used to indicate that the third GO agrees that the second terminal device joins the third P2P group.

In this design, after determining the negotiation result of group merging, it is determined to unlink one of the P2P groups according to the negotiation result, and connect multiple terminal devices obtained by the unlinking to the GO of another P2P group, so as to obtain The third P2P group.

In a possible design, the method further includes: recovering, by the second terminal device in the third P2P group, according to the service information of the second P2P group, Service status of the P2P group.

In this design, on the basis of solving the problem that the first terminal device and the second terminal device belonging to different P2P groups cannot realize P2P communication in the prior art, it can also guarantee the processing of the original business and the processing efficiency of the terminal device. reliability.

In a possible design, the method further includes: the second terminal device sending the negotiation result to at least one other terminal device in the second P2P group, so that each of the other terminal devices After disconnecting the link in the second P2P group, establish a Wi-Fi P2P connection with the third GO respectively.

Through this design, by merging the second P2P group where the second terminal device belongs to the first P2P group where the first terminal device is, it can be realized that the multiple terminal devices contained in the second P2P group and the multiple terminal devices contained in the first P2P group The terminal devices are merged into the same third P2P group, so that the problem in the prior art that the first terminal device and the second terminal device belonging to different P2P groups cannot realize P2P communication can be solved.

In a possible design, the preset merging rules include one or more of the following rules: the P2P group containing a small number of terminal devices is merged into the P2P group containing a large number of terminal devices; the service priority is low P2P groups with high service priority are merged into P2P groups with high service priority; P2P groups with small channel bandwidth are merged into P2P groups with large channel bandwidth; P2P groups with low traffic volume are merged into P2P groups with large traffic volume; The P2P group is merged into the P2P group with strong GO performance; the P2P group of the initiator of the Wi-Fi P2P connection request is merged into the P2P group of the initiated party.

In this design, through the preset merging rules, on the basis that the first terminal device and the second terminal device belonging to different P2P groups can realize P2P communication, it can also reduce the impact on the first P2P group and the second terminal device before merging. The original service impact of the second P2P group.

In a possible design, the second terminal device establishes a Wi-Fi P2P connection with the first terminal device in the third P2P group, including: if the second terminal device and the first terminal device A terminal device is a client GC role in the third P2P group, and the second terminal device and the first terminal device establish a Wi-Fi P2P connection through the GO role in the third P2P group.

In this design, by merging the GO roles included in the third P2P group, the Wi-Fi P2P communication between the first terminal device and the second terminal device belonging to the GC role in the P2P group can be realized.

In the second aspect, the embodiment of the present application provides a Wi-Fi direct communication system, including a first P2P group and a second P2P group, the first P2P group includes a first GO and a first terminal device, and the second The P2P group includes a second GO and a second terminal device, the first terminal device is the client GC in the first group of the first P2P group, and the second terminal device is the second terminal device of the second P2P group GC; wherein, the first terminal device initiates a Wi-Fi P2P connection establishment request to the second terminal device, or the second terminal device initiates a Wi-Fi P2P connection establishment request to the first terminal device; The first terminal device and the second terminal device perform a negotiation on P2P group merging, and obtain a negotiation result, and the negotiation result is used to indicate that the second P2P group and the first P2P group are merged into a third P2P group group; based on the negotiation result, the first P2P group and the second P2P form the third P2P group; the first terminal device and the second terminal device are established in the third P2P group Wi-Fi P2P connection.

In a possible design, before the first terminal device negotiates with the second terminal device on P2P group merging, the first terminal device sends first P2P status information to the second terminal device, Or the second terminal device sends second P2P status information to the first terminal device; the first P2P status information is used to indicate the first P2P group, and the second P2P status information is used to indicate the The second P2P group: the negotiation between the first terminal device and the second terminal device on P2P group merging includes: determining a negotiation result based on the second P2P state information and the first P2P state information.

In a possible design, the negotiation between the first terminal device and the second terminal device on P2P group merging includes: determining whether the second GO or the first GO is based on a preset merging rule be the third GO in the third P2P group; output a negotiation result according to the third GO; wherein, if it is determined that the second GO is the third GO, the negotiation result is that the first The P2P group is merged into the second P2P group; if it is determined that the first GO is the third GO, the negotiation result is to merge the second P2P group into the first P2P group.

In a possible design, if the negotiation result is the merging of the second P2P group into the first P2P group, the second terminal device, based on the service state of the second P2P group, Save the second P2P group service information; the second terminal device and the second GO perform P2P group disassembly, and the P2P group disassembly is used to disconnect the Wi-Fi connection between the second terminal device and the second GO -Fi P2P connection; the second terminal device initiates a Wi-Fi P2P connection establishment request to the third GO; and the second GO initiates a Wi-Fi P2P connection establishment request to the third GO; the second GO initiates a Wi-Fi P2P connection establishment request; The second terminal device receives a confirmation message from the third GO, the confirmation message is used to indicate that the third GO agrees that the second terminal device joins the third P2P group; and the second GO receives the confirmation message from A confirmation message of the third GO, where the confirmation message is used to indicate that the third GO agrees with the second GO to join the third P2P group; the second GO in the third P2P group is GC role.

In a possible design, the second terminal device restores the connection between the second terminal device and the second GO in the second P2P group according to the service information of the second P2P group. Service status of the P2P group.

In a possible design, the second terminal device sends the negotiation result to at least one other terminal device in the second P2P group; and the first terminal device sends the negotiation result to At least one other terminal device in the first P2P group.

In a possible design, the first terminal device and the second terminal device establish a Wi-Fi P2P connection in the third P2P group, including: the first terminal device and the second terminal The device establishes a Wi-Fi P2P connection through the GO role in the third P2P group.

In the third aspect, the embodiment of the present application also provides a terminal device, including: one or more processors; one or more memories; the one or more memories are used to store one or more computer programs and data Information; wherein the one or more computer programs include instructions; when the instructions are executed by the one or more processors, the terminal device is made to execute the method as described in any one of the above first aspects.

In a fourth aspect, the embodiment of the present application provides a computer-readable storage medium. The computer-readable medium stores a computer program (also referred to as code, or instruction) which, when run on a computer, causes the computer to perform the above-mentioned first A method in any one of the possible implementations of the aspect.

In the fifth aspect, the embodiment of the present application provides a computer program product, the computer program product includes: a computer program (also referred to as code, or instruction), when the computer program is executed, it causes the computer to perform any of the above-mentioned first aspects. A method in one possible implementation.

In the sixth aspect, the embodiment of the present application also provides a graphical user interface on a terminal device, the terminal device has a display screen, one or more memories, and one or more processors, and the one or more processors are used to Executing one or more computer programs stored in the one or more memories, the graphical user interface includes a graphical user interface displayed when the terminal device executes any possible implementation manner of the first aspect of the embodiments of the present application, Or a graphical user interface displayed when any possible implementation manner of the second aspect of the embodiment of the present application is executed.

For the beneficial effects of any one of the above-mentioned second aspect to the sixth aspect, please refer to the beneficial effects of various possible designs in the above-mentioned first aspect, which will not be repeated here.

Description of drawings

FIG. 1 is a schematic diagram of a P2P group;

FIG. 2 is an application scenario diagram of a P2P group;

FIG. 3 is an application scenario diagram of another P2P group;

FIG. 4 is an application scenario of a Wi-Fi direct communication method provided by an embodiment of the present application;

FIG. 5 is a schematic diagram of a hardware structure of a possible terminal device provided by an embodiment of the present application;

FIG. 6 is a software structural block diagram of a terminal device provided in an embodiment of the present application;

FIG. 7 is another application scenario of a Wi-Fi direct communication method provided by the embodiment of the present application;

FIG. 8 is a comparison diagram of an application scenario of a Wi-Fi direct communication method provided in an embodiment of the present application;

FIG. 9 is a comparison diagram of another application scenario of a Wi-Fi direct communication method provided in the embodiment of the present application;

FIG. 10 is a schematic flowchart of a Wi-Fi direct communication method provided by an embodiment of the present application;

FIG. 11 is another application scenario of a Wi-Fi direct communication method provided in the embodiment of the present application;

Fig. 12 is another application scenario of a Wi-Fi direct communication method provided by the embodiment of the present application;

FIG. 13 is a combined schematic diagram of a Wi-Fi direct communication method provided by an embodiment of the present application;

FIG. 14 is another combined schematic diagram of a Wi-Fi direct communication method provided by the embodiment of the present application;

FIG. 15 is a schematic flowchart of a negotiation process provided by an embodiment of the present application;

FIG. 16 is a schematic structural diagram of a terminal device provided in an embodiment of the present application.

Detailed ways

With the rapid development of society, terminal devices such as mobile phones are becoming more and more popular. Terminal equipment not only has communication functions, but also has powerful processing capabilities, storage capabilities, and camera functions. The terminal device executes the corresponding application program through the operating system, and the user can use the terminal device to make calls, send short messages, browse the web, watch videos, etc. Moreover, in order to facilitate data sharing between users, or users can transfer files between different terminal devices, a P2P group can be established between terminal devices through Wi-Fi direct connection technology, and then P2P In the group, business data packets are exchanged, such as documents, photos, or videos. Due to its fast transmission speed, high efficiency, and ease of use, Wi-Fi direct technology is currently widely used in data sharing scenarios between various terminal devices. Referring to FIG. 1 , it is a schematic diagram of a P2P group. A P2P group usually consists of a P2P group owner (group owner, GO) role and at least one P2P group client (group client, GC) role, as shown in Figure 1 GO, GC 1, ..., GC n. Each GC can communicate with the GO to implement business data packets.

Among them, Wi-Fi Direct technology is a point-to-point connection technology, which means that a transmission control protocol/internet protocol (TCP/IP) connection can be directly established between two terminal devices without the traditional meaning Participate in AP. In the P2P group established by Wi-Fi direct connection (also called Wi-Fi P2P, which may be used instead in the following embodiments) technology, there is a terminal device that can play the role of AP in the traditional sense, that is, GO; and P2P The other terminal devices in the group are GCs, and the GCs can be connected to the GO in the same way that a traditional station (station, STA) is connected to an AP. It should be noted that in each P2P group, there may be one GO and one or more GCs, and it can also be understood that GOs and GCs may have a one-to-one or one-to-many relationship.

Exemplarily, the P2P services performed in the P2P group may include: screen projection, multi-screen collaboration, distributed pictures, wireless printing, and the like.

In the current Wi-Fi Direct technology standard, when a terminal device is processing P2P services through Wi-Fi Direct technology, if a new P2P service is initiated at this time and needs to be connected with other terminal devices, there will be a problem of channel occupation. . Exemplarily, as shown in Figure 2, in P2P group 1, GO and GC1 are performing P2P service processing, if the user has a demand to initiate a new P2P service to other terminal equipment through GC 1, since GC 1 already exists in In P2P group 1, Wi-Fi P2P between GC 1 and other terminal devices outside of P2P group 1 cannot be realized.

Moreover, even in the same P2P group, Wi-Fi P2P cannot be established between GCs. In the prior art, it is possible to implement the P2P service processing between GCs in the P2P group through the transfer processing of the GO in the P2P group. As shown in Figure 3, in P2P group 1, assuming that GC 1 needs to initiate a Wi-Fi P2P negotiation with GC 2, if GC 1 determines that GC 2 belongs to P2P group 1, then GC 1 can use multiplexing GC 1 to the transmission channel of GO, and then realize the mutual transmission of business data packets with GC 2 through GO transit. During implementation, the service data packets to be transmitted between GC 1 and GC 2 are transferred through GO at the MAC layer to achieve the purpose of completing Wi-Fi P2P between GC and GC at the application layer.

However, in combination with the description in the background technology, since the terminal equipment performing P2P service processing has already occupied the channel for P2P service processing, two terminal equipments that do not belong to the same P2P group cannot establish Wi-Fi P2P. Exemplarily, as shown in Figure 4, assuming that there are P2P group 1 and P2P group 2, the GO or GC in P2P group 1 cannot perform Wi-Fi P2P with the GO or GC in P2P group 2, and the GO in P2P group 2 Or GC cannot perform Wi-Fi P2P with GO or GC in P2P group 1.

In the current Wi-Fi technical standard protocol, the Wi-Fi channels that can be used by Wi-Fi signals are mainly concentrated in the 2.4G frequency band and the 5G frequency band. Different P2P groups may use different Wi-Fi channels, or the operating frequencies of the physical transmission channels may be different, or even if the Wi-Fi channels used and the physical transmission channels have the same operating frequency, since there is no established The connection between GO and GC, so Wi-Fi P2P cannot be established.

In view of this, the embodiment of the present application provides a Wi-Fi direct connection communication method. For the problem that two terminal devices that do not belong to the same P2P group cannot establish Wi-Fi P2P, two different P2P groups are combined into one The design idea of a new P2P group includes one GO and multiple GCs in the new P2P group, and then realizes the Wi-Fi P2P connection between GO and each GC, and the MAC layer between GC and GC through GO Relay and Wi-Fi P2P connections on the application layer.

Embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.

It can be understood that the terminal device in the embodiment of the present application may be a mobile phone, a tablet computer, a wearable device (for example, a watch, a bracelet, a helmet, a headset, etc.), a vehicle device, an augmented reality (augmented reality, AR)/virtual Reality (virtual reality, VR) devices, laptops, ultra-mobile personal computers (UMPCs), netbooks, personal digital assistants (PDAs), smart home devices (e.g., smart TVs, smart screens) , smart speakers, smart cameras, etc.), printers, etc. It can be understood that, the embodiment of the present application does not impose any limitation on the specific type of the terminal device.

The terminal equipment that the embodiment of the present application can be applied to, the exemplary embodiment includes but not limited to carry

Or portable terminal equipment with other operating systems. The above-mentioned portable terminal device may also be other portable terminal devices, such as a laptop computer (Laptop) with a touch-sensitive surface (for example, a touch panel).

Fig. 5 shows a schematic diagram of a hardware structure of a possible terminal device. Wherein, the terminal device 200 includes: a radio frequency (radio frequency, RF) circuit 210, a power supply 220, a processor 230, a memory 240, an input unit 250, a display unit 260, an audio circuit 270, a communication interface 280, and a wireless fidelity ( wireless-fidelity, Wi-Fi) module 290 and other components. Those skilled in the art can understand that the hardware structure of the terminal device 200 shown in FIG. 5 does not constitute a limitation on the terminal device 200, and the terminal device 200 provided in the embodiment of the present application may include more or less components than those shown in the illustration , two or more components may be combined, or may have different component configurations. The various components shown in Figure 5 may be implemented in hardware, software, or a combination of hardware and software including one or more signal processing and/or application specific integrated circuits.

The components of the terminal device 200 are specifically introduced below in conjunction with FIG. 5 :

The RF circuit 210 can be used for receiving and sending data during communication or calling. Specifically, after receiving the downlink data from the base station, the RF circuit 210 sends it to the processor 230 for processing; in addition, sends the uplink data to be sent to the base station. Generally, the RF circuit 210 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier (low noise amplifier, LNA), a duplexer, and the like.

In addition, the RF circuit 210 can also communicate with networks and other devices through wireless communication. The wireless communication can use any communication standard or protocol, including but not limited to global system of mobile communication (GSM), general packet radio service (general packet radio service, GPRS), code division multiple access (code division multiple access (CDMA), wideband code division multiple access (WCDMA), long term evolution (LTE), e-mail, short message service (short messaging service, SMS), etc.

The Wi-Fi technology belongs to the short-distance wireless transmission technology, and the terminal device 200 can connect to an access point (access point, AP) through the Wi-Fi module 290, so as to realize data network access. The Wi-Fi module 290 can be used for receiving and sending data during communication. In the embodiment of the present application, the terminal device 200 can also perform service data packet mutual transmission with other terminal devices establishing a Wi-Fi P2P connection through the Wi-Fi module 290.

The terminal device 200 can be physically connected to other devices through the communication interface 280 . Optionally, the communication interface 280 is connected to the communication interface of the other device through a cable, so as to implement data transmission between the terminal device 200 and other devices.

Since in the embodiment of the present application, the terminal device 200 can implement communication services and interact with other terminal devices, the terminal device 200 needs to have a data transmission function, that is, the terminal device 200 needs to include a communication module inside. Although FIG. 5 shows communication modules such as the RF circuit 210, the Wi-Fi module 290, and the communication interface 280, it can be understood that at least one of the above-mentioned components exists in the terminal device 200 or Other communication modules (such as bluetooth module) for realizing communication, in order to carry out data transmission.

For example, when the terminal device 200 is a mobile phone, the terminal device 200 may include the RF circuit 210, may also include the Wi-Fi module 290, or may include a Bluetooth module (not shown in FIG. 5 ); When the terminal device 200 is a computer, the terminal device 200 may include the communication interface 280, may also include the Wi-Fi module 290, or may include a Bluetooth module (not shown in FIG. 5 ); When the terminal device 200 is a tablet computer, the terminal device 200 may include the Wi-Fi module, or may include a Bluetooth module (not shown in FIG. 5 ).

The memory 240 can be used to store software programs and modules. The processor 230 executes various functional applications and data processing of the terminal device 200 by running software programs and modules stored in the memory 240 . Optionally, the memory 240 may mainly include an area for storing programs and an area for storing data. Wherein, the storage program area can store the operating system (mainly including the corresponding software programs or modules such as the kernel layer, the system layer, the application program framework layer, and the application program layer). The application program layer may include various applications, among which, the method provided by the embodiment of the present application can be used in the recommended application, and the content recommendation based on the user's interest can be realized.

In addition, the memory 240 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage devices.

The input unit 250 can be used to receive editing operations of various types of data objects such as numbers or character information input by the user, and generate key signal input related to user settings and function control of the terminal device 200 . Optionally, the input unit 250 may include a touch panel 251 and other input devices 252 .

Wherein, the touch panel 251, also referred to as a touch screen, can collect touch operations of the user on or near it (for example, the user uses any suitable object or accessory such as a finger or a stylus on the touch panel 251 or on the operation near the touch panel 251), and drive the corresponding connection device according to the preset program.

Optionally, the other input devices 252 may include but not limited to one or more of physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, joysticks, and the like.

The display unit 260 can be used to display information input by the user or information provided to the user and various menus of the terminal device 200 . The display unit 260 is the display system of the terminal device 200, and is used to present an interface and realize human-computer interaction. The display unit 260 may include a display panel 261 . Optionally, the display panel 261 may be configured in the form of a liquid crystal display (liquid crystal display, LCD), an organic light-emitting diode (organic light-emitting diode, OLED), or the like. In the embodiment of the present application, for example, the display unit 260 can display the service data packets received by the terminal device 200 through the Wi-Fi module 290 and transmitted by other terminal devices through Wi-Fi P2P, for example, when the terminal device 200 is a smart screen At this time, the content to be projected can be received from the mobile phone through the Wi-Fi P2P connection, so that the transmitted content to be projected can be displayed on the display panel 261.

The processor 230 is the control center of the terminal device 200, and uses various interfaces and lines to connect various components, by running or executing software programs and/or modules stored in the memory 240, and calling the stored in the The data in the memory 240 executes various functions of the terminal device 200 and processes data, so as to realize various services based on the terminal device 200 . In the embodiment of the present application, the processor 230 is used to implement the method control process provided in the embodiment of the present application, and further provide a technology that can solve the problem in the prior art that terminal devices in different P2P groups cannot realize Wi-Fi direct connection plan.

The terminal device 200 also includes a power source 220 (such as a battery) for supplying power to various components. Optionally, the power supply 220 may be logically connected to the processor 230 through a power management system, so that functions such as charging, discharging, and power consumption can be managed through the power management system.

As shown in FIG. 5 , the terminal device 200 further includes an audio circuit 270 , a microphone 271 and a speaker 272 , which can provide an audio interface between the user and the terminal device 200 . The audio circuit 270 can be used to convert the audio data into a signal that the speaker 272 can recognize, and transmit the signal to the speaker 272, and the speaker 272 converts the signal into a sound signal for output. The microphone 271 is used to collect external sound signals (such as the voice of people speaking, or other sounds, etc.), and convert the collected external sound signals into signals that the audio circuit 270 can recognize, and send them to the audio circuit 270 . The audio circuit 270 can also be used to convert the signal sent by the microphone 271 into audio data, and then output the audio data to the RF circuit 220 for sending to another terminal device, or output the audio data to the memory 240 for subsequent further processing.

Although not shown, the terminal device 200 may also include at least one sensor, camera, etc., which will not be repeated here. The at least one sensor may include, but is not limited to, a pressure sensor, an air pressure sensor, an acceleration sensor, a distance sensor, a fingerprint sensor, a touch sensor, a temperature sensor, and the like.

The operating system (operating system, OS) involved in the embodiment of the present application is the most basic system software running on the terminal device 200. Taking a smart phone as an example, the operating system can be a harmony OS, an Android system or an IOS system. The software system of the terminal device 200 may adopt a layered architecture, an event-driven architecture, a micro-kernel architecture, a micro-service architecture, or a cloud architecture. In this embodiment of the present application, an operating system adopting a layered architecture is taken as an example to illustrate the software structure of the terminal device 200 .

FIG. 6 is a block diagram of a software structure of a terminal device provided by an embodiment of the present application. As shown in FIG. 6, the software structure of the terminal device may be a layered architecture, for example, the software may be divided into several layers, and each layer has a clear role and division of labor. Layers communicate through software interfaces. In some embodiments, the operating system is divided into five layers, which are application program layer, application program framework layer (framework, FWK), runtime and system library, kernel layer, and hardware layer from top to bottom.

The application layer can consist of a series of application packages. As shown in FIG. 6, the application program layer may include camera, settings, skin module, user interface (user interface, UI), three-party application program and so on. Among them, the three-party application may include gallery, calendar, call, map, navigation, WLAN, Bluetooth, music, video, short message and so on.

In some embodiments of the present application, the application layer may be used to implement the presentation of an editing interface, and the above editing interface may be used for user operations. For example, the user may perform a screencasting user operation on an editing interface corresponding to the presentation of the video.

In a possible implementation mode, the application program can be developed using the Java language and completed by calling the application programming interface (application programming interface, API) provided by the application program framework layer, and the developer can communicate with the application program framework layer. The bottom layer of the system (such as hardware layer, kernel layer, etc.) interacts and develops its own application program. The application framework layer is mainly a series of services and management systems of the operating system.

The application framework layer provides application programming interfaces and programming frameworks for applications in the application layer. The application framework layer includes some predefined functions. As shown in Figure 6, the application framework layer may include a shortcut icon management module, a window manager, a content provider, a view system, a phone manager, a resource manager, a notification manager, and the like.

The shortcut icon management module is used to manage the shortcut icons displayed on the terminal device, such as creating shortcut icons, removing shortcut icons, monitoring whether the shortcut icons meet the display conditions, and so on.

A window manager is used to manage window programs. The window manager can get the size of the display screen, determine whether there is a status bar, lock the screen, capture the screen, etc. Content providers are used to store and retrieve data and make it accessible to applications. Said data may include video, images, audio, calls made and received, browsing history and bookmarks, phonebook, etc.

The view system includes visual controls, such as controls for displaying text, controls for displaying pictures, and so on. The view system can be used to build applications. A display interface can consist of one or more views. For example, a display interface including a text message notification icon may include a view for displaying text and a view for displaying pictures.

The telephony manager is used to provide the communication function of the terminal equipment. For example, the management of call status (including connected, hung up, etc.).

The resource manager provides various resources for the application, such as localized strings, icons, pictures, layout files, video files, and so on.

The notification manager enables the application to display notification information in the status bar, which can be used to convey notification-type messages, and can automatically disappear after a short stay without user interaction. For example, the notification manager is used to notify the download completion, message reminder, etc. The notification manager can also be a notification that appears on the top status bar of the system in the form of a chart or scroll bar text, such as a notification of an application running in the background, or a notification that appears on the screen in the form of a dialog window. For example, a text message is displayed in the status bar, a prompt sound is issued, the terminal device vibrates, and the indicator light flashes, etc.

In some embodiments of the present application, the application framework layer is mainly responsible for invoking the service interface communicated with the hardware layer, so as to transfer the user's operation request to the hardware layer, and the operation request may include the user opening a certain APP The operation request, or may include the multi-screen collaborative operation request performed by the user in an APP, etc.

The runtime includes the core library and virtual machine. The runtime is responsible for the scheduling and management of the operating system.

The core library consists of two parts: one part is the function function that the java language needs to call, and the other part is the core library of the operating system. The application layer and the application framework layer run in virtual machines. The virtual machine executes the java files of the application program layer and the application program framework layer as binary files. The virtual machine is used to perform functions such as object life cycle management, stack management, thread management, security and exception management, and garbage collection.

A system library can include multiple function modules. For example: surface manager (surface manager), media library (media libraries), 3D graphics processing library (eg: OpenGL ES), 2D graphics engine (eg: SGL), etc.

The surface manager is used to manage the display subsystem and provides the fusion of 2D and 3D layers for multiple applications.

The media library supports playback and recording of various commonly used audio and video formats, as well as still image files, etc. The media library can support a variety of audio and video encoding formats, such as: MPEG4, H.264, MP3, AAC, AMR, JPG, PNG, etc.

The 3D graphics processing library is used to implement 3D graphics drawing, image rendering, compositing, and layer processing, etc.

2D graphics engine is a drawing engine for 2D drawing.

In some embodiments, a 3D graphics processing library can be used to draw a 3D motion track image, and a 2D graphics engine can be used to draw a 2D motion track image.

The kernel layer is the layer between hardware and software. The kernel layer includes at least a display driver, a camera driver, an audio driver, and a sensor driver.

The hardware layer may include various types of sensors, such as acceleration sensors, gyroscope sensors, touch sensors, and the like.

Usually, the terminal device 200 can run multiple application programs at the same time. Simpler, one application can correspond to one process, and more complex, one application can correspond to multiple processes. Each process has a process number (process ID).

Combined with the introduction of the hardware structure of the terminal device in Figure 5 above, and the introduction of the software framework of the terminal device in Figure 6, the following illustrates the scenario where the terminal devices in different P2P groups need to establish a Wi-Fi P2P connection. The working principle of the software and hardware of the device implementing a Wi-Fi Direct communication method proposed in the embodiment of the present application.

It should be understood that "at least one" in the embodiments of the present application refers to one or more, and "multiple" refers to two or more. "And/or" describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone, where A, B can be singular or plural. The character "/" generally indicates that the contextual objects are an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single item(s) or plural item(s). For example, at least one item (unit) of a, b or c can represent: a, b, c, a and b, a and c, b and c, or a, b and c, wherein a, b, c Can be single or multiple.

A plurality referred to in the embodiment of the present application means greater than or equal to two.

In addition, it should be understood that in the description of this application, words such as "first" and "second" are only used for the purpose of distinguishing descriptions, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or imply order.

In addition, in the embodiments of this application, "terminal device", "equipment", "mobile phone" and so on can be used interchangeably, that is, various devices that can be used to implement the embodiments of this application; the terms "application" and "mobile phone" in the embodiments of this application "Applications" can also be used in combination, and both refer to programs or clients with certain service-providing capabilities, that is to say, applications and clients can also be used in combination. For example, video clients and game clients can also be called video applications or game applications. wait.

It should be understood that the hardware structure of the terminal device may be as shown in FIG. 5, and the software architecture may be as shown in FIG. The software programs and applications stored in the memory 240 may be executed to execute the procedure of a Wi-Fi direct communication method provided in the embodiment of the present application.

In order to facilitate the understanding of a Wi-Fi direct communication method provided in this application, the implementation process of the method provided in this application will be introduced below in combination with the contents shown in FIG. 7 to FIG. 15 .

The design concept of the method provided in this application is to perform group merging on multiple different P2P groups when there is a scenario where a Wi-Fi P2P connection needs to be established between the first terminal device and the second terminal device belonging to different P2P groups , realizing building the first terminal device and the second terminal device into a new P2P group. In this way, in the new P2P group, GO can exchange business data packets with each GC through Wi-Fi P2P connection, or between GC and GC through GO transfer at the MAC layer and Wi-Fi P2P at the application layer Connect for mutual transmission of business data packets, so as to meet the Wi-Fi P2P transmission between terminal devices and terminal devices in more scenarios, which is convenient to improve the efficiency of business data packet transmission and meet the needs of users in various scenarios, so as to improve user experience.

Exemplarily, in combination with the content shown in Figure 4 introduced above, in the prior art, the first terminal device belonging to the P2P group 1 cannot communicate with the second terminal device belonging to the P2P group 2. Problems establishing new Wi-Fi Direct connections. Fig. 7 is a schematic diagram after being processed by the method provided in this application. The method provided by this application constructs a new P2P group 1' by group merging P2P group 1 and P2P group 2, so that the Wi-Fi connection between the first terminal device and the second terminal device can be realized in the P2P group 1'. direct connection. Based on the Wi-Fi Direct technical standard protocol, a P2P group is usually composed of one GO and multiple GCs. Assuming that the method of merging P2P group 2 into P2P group 1 is adopted, the GO and GC in P2P group 2 can be used as GCs Connect to GO in P2P group 1, as shown in Figure 7, P2P group 1' includes GO, GC 1, GC 2 and GC 3. In the P2P group 1' shown in Figure 7, GO has established Wi-Fi P2P with GC 1, GC 2 and GC 3 respectively, so the P2P business can be processed through the Wi-Fi P2P connection. Between every two terminal devices in GC 1, GC 2 and GC 3, P2P services can be processed through GO transfer at the MAC layer and Wi-Fi P2P connection at the application layer. Wherein, the GO in the P2P group 1' can be determined according to a preset merging rule, and the specific merging rule will be described in conjunction with the following multiple embodiments, and will not be described in detail here.

It should be noted that, in the embodiment of the present application, two different P2P groups are used as an example for group merging. There are various ways to establish Wi-Fi P2P transmission between more terminal devices belonging to different P2P groups. In the scenario, multiple different P2P groups can be reconstructed into a new P2P group by referring to the embodiments described in this application. An optional example is that a plurality of different P2P groups can adopt a group merging method step by step, for example, if there are P2P group 1, P2P group 2 and P2P group 3, wherein the first terminal device in P2P group 1 needs to be connected with The second terminal device in P2P group 2 establishes a new Wi-Fi direct connection, and the third terminal device in P2P group 2 needs to establish a new Wi-Fi direct connection with the third terminal device in P2P group 3, then you can First, P2P group 1 and P2P group 2 are merged into a new P2P group 1', and then P2P group 1' and P2P group 3 are merged into a new P2P group 3'. Another optional example is that multiple terminal devices in different P2P groups negotiate to determine the GO of the new P2P group after group merging. Following the example of the previous example, the first terminal device and the second The terminal device and the third terminal device perform joint negotiation. For example, the obtained negotiation result may be a manner of merging P2P group 1 and P2P group 3 into P2P group 2 to obtain a new P2P group 2'.

In order to better understand the present application, several possible application scenarios are introduced below.

Scenario 1, FIG. 8 is a comparison diagram of application scenarios of a Wi-Fi direct communication method provided by the embodiment of the present application. As shown in (a) of Figure 8, it is assumed that there is a first terminal device (mobile phone 1) that is projecting screens with the smart screen in P2P group 1, mobile phone 1 acts as GC 1 in P2P group 1, and the smart screen is in the P2P group 1 as GO 1; and, assuming that there is a second terminal device (mobile phone 2) that is performing multi-screen collaboration with tablet computer in P2P group 2, mobile phone 2 is in P2P group 2 as GC 2, and tablet computer is in P2P group 2 As GO 2. At this time, if the user uses the method of face-to-face file transfer through mobile phone 1 to trigger the user operation of sharing pictures with mobile phone 2, in the prior art, since mobile phone 1 and mobile phone 2 are GCs belonging to different P2P groups, there is a problem of P2P channel being occupied , so it will fail to establish a Wi-Fi direct connection, and then the picture sharing will fail. Among them, the face-to-face file transfer methods such as "Huawei Share" and "Face-to-Face Quick Transfer" are based on Wi-Fi P2P connection for file transfer.

Through the method provided by this application, if the user triggers the user operation of sharing pictures to the mobile phone 2 through the method of face-to-face file transfer through the mobile phone 1, the mobile phone 1 and the mobile phone 2 can carry out the negotiation of group merging, and realize the integration of P2P group 1 and P2P group 2 Merge into a P2P group 1', as shown in (b) in FIG. 8 . In the P2P group 1', the smart screen can be used as the GO 1' in the P2P group 1', and the mobile phone 1, the mobile phone 2 and the tablet computer can be used as each GC in the P2P group 1', so that the mobile phone 1 and the mobile phone 2. A Wi-Fi direct connection can be established in the P2P group 1', so that the user operation of picture sharing can be carried out by means of face-to-face file transfer. Among them, in the P2P group 1', mobile phone 1 and mobile phone 2 are used as GCs, and can implement Wi-Fi P2P connection by transferring service data packets through GO. For example, GO can transfer service data packets on the MAC layer, and then It can realize the establishment of Wi-Fi P2P connection between mobile phone 1 and mobile phone 2 at the application layer.

Scenario 2, FIG. 9 is a comparison diagram of another application scenario of a Wi-Fi direct communication method provided by the embodiment of the present application. Following the example shown in Figure 8, the user can also use the face-to-face file transfer method through the smart screen to trigger the user operation of sharing pictures to the tablet computer. In the prior art, since the smart screen (GO1) and the tablet computer (GO2) belong to the GOs of different P2P groups also have the problem of P2P channels being occupied, so sharing will also fail, as shown in (a) in Figure 9 . Through the method provided by this application, also in the P2P group 1' obtained by merging P2P group 1 and P2P group 2, it is possible to establish a Wi-Fi P2P connection between the smart screen (GO1) and the tablet computer (GO2), as shown in Figure 9 ( b) Content shown.

In addition, in actual scenarios, for example, there may be a need for multi-screen collaboration between the smart screen (GO1) and the mobile phone 2 (GC2), and this application will not show other possible application scenarios one by one. It can be understood that in the prior art, if the first terminal device has established Wi-Fi P2P in P2P group 1, if it is necessary to establish a Wi-Fi P2P connection with the second terminal device belonging to P2P group 2 at this time, due to the occupation of the P2P channel It will lead to failure to establish a connection, but this application can realize the establishment of a Wi-Fi P2P connection between the first terminal device and the second terminal by performing group merging on the P2P group 1 and the P2P group 2.

Based on the application scenarios shown in FIG. 8 and FIG. 9 , the specific implementation process of the method provided by the present application will be introduced in detail below with reference to FIG. 10 . For ease of understanding, the example introduced in Figure 8 is used in Figure 10, that is, there is a first terminal device (mobile phone 1) that is projecting screens with the smart screen in P2P group 1, and there is a second terminal device (mobile phone 2) that is communicating with the tablet The computer performs multi-screen collaboration in P2P group 2. At this time, if the user triggers the user operation of sharing pictures to the mobile phone 2 through the face-to-face fast transmission method through the mobile phone 1, in this case, the introduction of multiple terminal devices included in different P2P groups Specific process. It should be noted that the example shown in FIG. 8 is used in FIG. 10 for introduction, but this application does not limit the example scenario. It can be understood that the method provided in the embodiment of the present application is applicable to various possible scenarios where a Wi-Fi P2P connection needs to be established between the first terminal device and the second terminal device belonging to different P2P groups.

In addition, in the embodiments described below, the first terminal device and the second terminal device are smart phones as an example, but this application is not limited to smart phones, and any terminal device that can establish a Wi-Fi P2P connection can be used. As the first terminal device or the second terminal device in this application, for example, the first terminal device or the second terminal device may also be a notebook computer, a vehicle-mounted computer, or the like.

Referring to FIG. 10 , it is a schematic flowchart of a Wi-Fi Direct communication method provided by an embodiment of the present application. Specifically, the following steps may be included:

S1001: The first terminal device initiates a Wi-Fi P2P connection establishment request to the second terminal device. Exemplarily, there may be various application scenarios where the first terminal device initiates a request to establish a Wi-Fi P2P connection to the second terminal device. For example, the first terminal device needs to initiate a request to establish a face-to-face file transfer to the second terminal device, or A terminal device initiates a screen projection request and the like to the second terminal device. It should be understood that the "first terminal device" and "second terminal device" in this embodiment of the present application are only used for distinguishing descriptions.

In a possible scenario, an application scenario in which a first terminal device initiates a Huawei sharing request to a second terminal device is used as an example for introduction. Refer to Figure 11, in the scenario where mobile phone 1 (GC1) is projecting screen with smart screen (GO1) in P2P group 1, and mobile phone 2 (GC2) is performing multi-screen collaboration with tablet computer (GO2) in P2P group 2 , in the process of using the mobile phone 1, the user 1 may also share a picture in the gallery. A specific scenario may be that the user 1 performs a click operation 1 on the "share" control on the display interface displaying the picture to be shared, as shown in (1) in FIG. 11 . Then, if the "Huawei Sharing" function in mobile phone 1 is not enabled before this, user 1 can click to enable the Huawei sharing function of mobile phone 1 (GC1) in the display interface shown in (2) in Figure 11 Operation 2: According to click operation 2, the display interface can be refreshed as (3) in Figure 11 by searching for other Wi-Fi P2P with the Huawei sharing function enabled on mobile phone 1, showing that multiple Wi-Fi P2P searches can be found Identification of other terminal devices; finally, user 1 can perform click operation 3 on the control displayed as user 2's mobile phone 2 (GC2), and mobile phone 1 can initiate a Wi-Fi P2P connection request to mobile phone 2 according to the click operation 3. Or, if the "Huawei Share" function in the mobile phone 1 has been turned on before this, the mobile phone 1 can also directly refresh the display interface as (3) in Figure 11 according to the click operation 1. The subsequent processing process is similar to the above-mentioned introduction. This will not be repeated here.

In another possible scenario, the request initiated by the first terminal device to establish a Wi-Fi P2P connection to the second terminal device may also be triggered by switching from a Wi-Fi hotspot-based LAN transmission mode. Refer to Figure 12, in the scenario where mobile phone 1 (GC1) is projecting screen with smart screen (GO1) in P2P group 1, and mobile phone 2 (GC2) is performing multi-screen collaboration with tablet computer (GO2) in P2P group 2 , there may also be photo sharing between mobile phone 1 and mobile phone 2 based on the Wi-Fi hotspot LAN transmission method, but the local area network established based on the Wi-Fi hotspot may have a lag problem caused by unstable transmission. When this application is implemented, when the first terminal device or the second terminal device recognizes that the data transmission status is degraded or even abnormal at the business level, it can switch to the Wi-Fi P2P-based transmission mode, thereby improving data transmission efficiency. Optionally, if both mobile phone 1 and mobile phone 2 have enabled the Huawei sharing function, mobile phone 1 can initiate a request to mobile phone 2 to establish a Wi-Fi P2P connection through Huawei sharing. Alternatively, if both mobile phone 1 and mobile phone 2 have turned on Bluetooth, then mobile phone 1 can also initiate a request to establish a Wi-Fi P2P connection via Bluetooth to mobile phone 2.

S1002: The first terminal device establishes an information transmission channel with the second terminal device. Exemplarily, the first terminal device and the second terminal device may establish a trustworthy information transmission channel by means of bluetooth or wireless local area network (wireless local area network, WLAN). In this way, through the information transmission channel, information exchange of P2P status information can be performed between the first terminal device and the second terminal device, so that group merger negotiation can be performed.

S1003: The first terminal device and the second terminal device perform information exchange of P2P state information through the information transmission channel.

The first terminal device may send first P2P state information to the second terminal device, and the first P2P state information may include but not limited to the following information: group information of P2P group 1, service information of P2P group 1.

Exemplarily, the group information of P2P group 1 may include but not limited to: service set identifier (service set identifier, SSID) used to distinguish different P2P groups, name BSSID of basic service set (basic service set, BSS), used Wi-Fi channel, working frequency of physical transmission channel, channel bandwidth, GO role and GC role, GO media access control (media access control, MAC) address and Internet protocol (internet protocol, IP) address, each GC's MAC address and IP address, etc.

The business information of P2P group 1 may include but not limited to: business type (such as screen projection or multi-screen collaboration or face-to-face file transfer), business priority, business data volume to be transmitted, and current average speed of business transmission.

The second terminal device may send the second P2P state information to the first terminal device, and the second P2P state information may refer to the first P2P state information, including information about the P2P group 2 where the second terminal device is located, and no further repeat.

In this way, through the sharing of P2P state information between the first terminal device and the second terminal device, the state of the Wi-Fi P2P that has been established by the other party can be known to each other, so that the negotiation of group merging can be performed.

S1004: The first terminal device performs group merger negotiation with the second terminal device.

Optionally, the first terminal device (mobile phone 1) performs negotiation processing of group merging according to the locally stored first P2P status information and the received second P2P status information. Or optionally, the second terminal device (mobile phone 2 ) performs group merging negotiation processing according to the locally stored second P2P status information and the received first P2P status information. During implementation, the terminal device that performs the negotiation process of group merging can be determined according to the type of the terminal device and/or the information such as the request initiator. For example, if the processor of mobile phone 1 has stronger performance than the processor of mobile phone 2, the Mobile phone 1 performs negotiation processing of group merging. The first terminal device or the second terminal device can also share the negotiation result of the negotiation process. It can be understood that if the mobile phone 1 performs the negotiation process of group merging, the mobile phone 1 can send the negotiation result to the mobile phone through the information transmission channel after obtaining the negotiation result. 2.

Exemplarily, taking the negotiation process of group merging performed by the first terminal device as an example, the first terminal device may perform the negotiation process according to a preset merging rule. Among them, the preset merging rules may include but not limited to the rules shown below:

Rule 1: The P2P group containing a small number of terminal devices is merged into the P2P group containing a large number of terminal devices. Exemplarily, FIG. 13 is a combined schematic diagram of a Wi-Fi Direct communication method provided by an embodiment of the present application. Assuming that P2P group 1 contains 3 terminal devices and P2P group 2 contains 2 terminal devices, considering that there may be more service transmission in P2P groups containing a large number of terminal devices, for example, between GO and GC 1 in P2P group 1 The service transmission between GO and GC2, and the service transmission between GC 1 and GC 2 via GO, in order to reduce the impact of P2P group 1 and P2P group 2 on the original P2P connection, then The P2P group 2 can be merged into the P2P group 1. It can be understood that the GO and GC contained in the P2P group 2 are connected as GCs to the GO in the P2P group 1 to obtain a new P2P group 1'.

Rule 2: P2P groups with low service priority are merged into P2P groups with high service priority. Exemplarily, if the business priorities in P2P group 1 belong to the normal level, and the business priorities processed in P2P group 2 include emergency level, then connect the GO and at least one GC contained in P2P group 1 to P2P group 2 as GC in order to minimize the impact on the emergency-level services in P2P group 2.

Rule 3: The P2P group with small channel bandwidth is merged into the P2P group with large channel bandwidth. Exemplarily, FIG. 14 is another combined schematic diagram of a Wi-Fi Direct communication method provided by the embodiment of the present application. Assume P2P group 1 works on channel 1, assume that the working frequency of the physical transmission channel of channel 1 is 5180Khz and the bandwidth is 80M, and P2P group 21 works on channel 6, assuming that the working frequency of the physical transmission channel of channel 6 is 2437Khz and the bandwidth is 80M is 20M, considering that channels with larger channel bandwidths have higher transmission efficiency for service data packets, then P2P group 2 can be merged into P2P group 1, which can be understood as using GO and GC contained in P2P group 2 as GC is connected to GO in P2P group 1 to get a new P2P group 1'. Wherein, the working channel of P2P group 1' reuses the working channel of P2P group 1, which is channel 1.

Rule 4: The P2P group with a small business volume is merged into the P2P group with a large business volume. In this way, the impact on the original P2P connection of the P2P group with heavy traffic can be reduced.

Rule 5. P2P groups with weak GO performance are merged into P2P groups with strong GO performance. Exemplarily, the performance of the device can be processing performance. If the GO in P2P group 1 is a mobile phone, and the GO in P2P group 2 is a tablet computer, usually the tablet computer has stronger processing performance, then the GO included in P2P group 1 and at least one GC connected to the GO in P2P group 2 as GC. Another example, the performance of the device can also be the power consumption performance, if the GO in the P2P group 1 has a larger battery capacity or remaining battery power, etc. than the GO in the P2P group 2, then the P2P group 2 can be merged Go to P2P group 1. In other examples, the performance of the device may also be a radio frequency performance or a combination of multiple performances, which are not shown in this application one by one. In this way, the performance of the GO to multiple connected GCs in the new P2P group obtained after the combination can be guaranteed, thereby guaranteeing the service transmission capability and service transmission stability in the P2P group.

Rule 6. The P2P group of the initiator of the Wi-Fi P2P connection request is merged into the P2P group of the initiated party.

In a possible merging scenario, FIG. 15 is a schematic flowchart of a negotiation process provided by an embodiment of the present application. It should be noted that what is shown in Figure 15 is a possible merging scenario, and more or fewer rules may be used during the implementation of this application, and the order of judging multiple different rules may be changed. Not limited. The first terminal device in P2P group 1 may perform group merger negotiation processing according to the following processing flow, including:

S1501. The first terminal device determines whether the number of terminals included in P2P group 2 and P2P group 1 is equal. If they are equal, the first terminal device executes S1502b; otherwise, executes S1502a.

S1502a. The first terminal device merges the P2P group containing a small number of terminal devices into the P2P group containing a large number of terminal devices.

S1502b. The first terminal device determines whether the service priorities of the P2P group 2 and the P2P group 1 are equal. If they are equal, the first terminal device executes S1503b; otherwise, executes S1503a.

S1503a. The first terminal device merges the P2P group with low service priority into the P2P group with high service priority.

S1503b. The first terminal device determines whether the channel bandwidths of the P2P group 2 and the P2P group 1 are equal. If they are equal, the first terminal device executes S1504b; otherwise, executes S1504a.

S1504a. The first terminal device merges the P2P group with small channel bandwidth into the P2P group with large channel bandwidth.

S1504b. The first terminal device determines whether the service volumes of the P2P group 2 and the P2P group 1 are equal. If they are equal, the first terminal device executes S1505b; otherwise, executes S1505a.

S1505a. The first terminal device merges the P2P group with a small traffic volume into the P2P group with a large traffic volume.

S1505b. The first terminal device determines whether the GO performances of the P2P group 2 and the P2P group 1 are equal. If they are equal, the first terminal device executes S1506b; otherwise, executes S1506a.

S1506a. The first terminal device merges the P2P group with weak GO performance into the P2P group with strong GO performance.

S1506b. The first terminal device merges the P2P group 1 to which the first terminal device as the initiating party belongs to the P2P group 2 to which the second terminal device as the initiating party belongs to.

It should be noted that if the second terminal device performs the negotiation process of group merging, the process flow is similar, and the present application will not repeat it here.

After the foregoing S1004, the embodiment of the present application may further include the following steps:

S1005a: The first terminal device sends the negotiation result to at least one other terminal device included in the P2P group 1 . Exemplarily, in the content shown in FIG. 10 , P2P group 1 also includes a smart screen, then the first terminal device (mobile phone 1 ) sends the negotiation result to the smart screen.

Wherein, the information contained in the negotiation result may include but not limited to the merging method and the group information of the target merging group. For example, the merging manner may be merging P2P group 1 into P2P group 2, or may be merging P2P group 2 into P2P group 1. And, assuming that the target merging group is P2P group 1, the group information of the target merging group can be the same as the example introduced in S1003 above, so that the terminal devices involved in the P2P group that need to perform group merging can be determined in time The state of the P2P group can ensure the efficiency of the P2P service.

S1005b: The second terminal device sends the negotiation result to at least one other terminal device included in the P2P group 2 . Exemplarily, in the content shown in FIG. 10 , P2P group 2 also includes a tablet computer, then the second terminal device (mobile phone 2 ) sends the negotiation result to the tablet computer.

Assuming that the negotiation result sent by S1005a and S1005b is to merge P2P group 2 into P2P group 1, then multiple terminal devices included in P2P group 2 can perform link disconnection processing on the original P2P connection, and then unlink the original P2P connection. The obtained multiple terminal devices included in P2P group 2 are connected to the GO of P2P group 1 as GC, which can be understood as the MAC address of each terminal device in P2P group 2 according to the GO role in P2P group 1 contained in the negotiation result address and IP address, respectively initiate a Wi-Fi P2P connection request to the GO in P2P group 1, so as to achieve the purpose of connecting with the GO in P2P group 1 respectively.

Wherein, the embodiment of the present application does not limit the execution order of S1005a and S1005b.

Based on the content shown in Figure 10 including the second terminal device and the tablet computer, the following describes the disconnection process of the second terminal device and the tablet computer and the Wi-Fi P2P reconnection process after the disconnection process.

The implementation process of the second terminal device may include the following S1006a to S1010a.

S1006a. The second terminal device saves the service information of the second P2P group (P2P group 2) based on the service state of the second P2P group (P2P group 2). Wherein, the P2P group 2 service information may include but not limited to: pairing relationship, service transmission status, and the like. Wherein, the pairing relationship represents the allocation relationship of GO and GC roles in the P2P group 2, and information such as the MAC address and IP address of other terminal devices that have established a P2P connection with the second terminal device in the P2P group 2, so that Service recovery is performed in the new P2P group after group merging. The service transmission status information indicates the service type of the P2P service processed by the second terminal device in the P2P group 2, service transmission progress, service caller package name and service average transmission speed, etc., so as to facilitate group After the merger, in the new P2P group, the second terminal device can accurately restore the service, and can restore the service transmission status of the disconnected P2P group 2 before the disconnection, thereby ensuring the continuous processing of the original P2P service.

S1007a, the second terminal device and the tablet computer perform P2P assembly and disassembly. Exemplarily, the second terminal device (GC) initiates a Wi-Fi P2P disconnection request (such as a P2P disconnect command) to the tablet computer (GO), to notify the tablet computer of the Wi-Fi connection established between the second terminal device and the tablet computer. Fi P2P connections are destroyed.

S1008a. The second terminal device initiates a Wi-Fi P2P connection establishment request to the GO in the P2P group 1.

S1009a, the connection between the second terminal device and the first terminal device is through the Wi-Fi P2P connection relayed by GO in P2P group 1. Exemplarily, after the second terminal device establishes a Wi-Fi P2P connection with the GO in P2P group 1, the second terminal device and the first terminal device are both GCs of the same GO (smart screen) at this time, and can Realize the transfer of service data packets through GO at the MAC layer and realize P2P service processing at the application layer.

S1010a. The second terminal device restores the original service processing according to the P2P group 2 service information. Exemplarily, after the second terminal device establishes a Wi-Fi P2P connection with the GO in P2P group 1, after determining that the tablet computer also establishes a Wi-Fi P2P connection with the GO, it re-initiates the communication with the GO according to the P2P group 2 service information. The P2P service of the tablet computer; for example, if the last character of the original P2P service transmission is obtained from the P2P group 2 service information, the second terminal device restarts sending or receiving from the character next to the last character.

It should be noted that this application does not limit the execution sequence between S1009a and S1010a, and S1010a may be executed first and then S1009a may be executed during implementation, or S1010a and S1009a may be executed synchronously through multiple processes.

The implementation process of the tablet computer may include the following steps S1006b to S1010b.

S1006b. The tablet computer saves the P2P group 2 service information. Wherein, the P2P group 2 service information may refer to the P2P group 2 service information stored by the second terminal device introduced in the foregoing S1006a, which will not be repeated here.

S1007b. The tablet computer and the second terminal device perform P2P assembly and disassembly. Exemplarily, the tablet computer (GO) initiates a Wi-Fi P2P disconnection request (such as a P2P disconnect command) to the second terminal device (GC), and after receiving a confirmation message from the second terminal device, the tablet computer performs P2P disconnection deal with. Alternatively, the tablet computer receives the Wi-Fi P2P unlinking request initiated by the second terminal device, suspends the ongoing P2P business in the P2P group 2 where it is currently located, and after saving the P2P group 2 business information, for the second terminal device Wi-Fi P2P connection performs P2P disconnection processing.

S1008b, the tablet computer establishes a Wi-Fi P2P connection with the GOs in the P2P group 1.

S1009b, the connection between the tablet computer and the second terminal device is through the Wi-Fi P2P connection relayed by GO in the P2P group 1.

S1010b. The tablet computer restores the original service processing according to the P2P group 2 service information. Exemplarily, the tablet computer receives the P2P service request re-initiated by the second terminal device, and receives or sends the transmission data of the original P2P service according to the P2P group 2 service information.

It should be noted that the present application does not limit the execution sequence between S1009b and S1010b. During implementation, S1010b may be executed first and then S1009b, or S1010b and S1009b may be executed synchronously through multiple processes.

Through the Wi-Fi direct communication method provided by this application, when there is a scenario where a Wi-Fi P2P connection needs to be established between the first terminal device and the second terminal device belonging to different P2P groups, multiple different P2P The implementation of group merging of groups can be specifically implemented as the negotiation process of group merging between the first terminal device and the second terminal device. After one of the P2P groups is disconnected, the GC of the other P2P group is connected to the On the GO of this other P2P group, thereby obtain the new P2P group that contains the terminal equipment of original multiple different P2P groups, and then through this new P2P group, can establish Wi-Fi between the original multiple different P2P groups. -Fi direct communication.

Based on the same technical concept, FIG. 16 shows a terminal device 1600 provided in the embodiment of the present application. The terminal device 1600 may be the second terminal device in the foregoing method embodiments, or the first terminal device. The terminal device 1600 includes one or more processors 1601 ; one or more memories 1602 ; a communication interface 1603 , and one or more computer programs 1604 , and the above components can be connected through one or more communication buses 1605 . The communication interface 1603 is used to implement communication with other devices (for example, if the terminal device 1600 is a first terminal device, the other device may be a second terminal device), for example, the communication interface may be a transceiver. Wherein the one or more computer programs 1604 are stored in the memory 1602 and are configured to be executed by the one or more processors 1601, the one or more computer programs 1604 include instructions, and the above instructions can be used to perform the following steps ,include:

The second terminal device receives a request for establishing a Wi-Fi P2P connection initiated by the first terminal device, or the second terminal device initiates a request for establishing a Wi-Fi P2P connection to the first terminal device, and the second terminal device belongs to In the second point-to-point P2P group, the first terminal device belongs to the first P2P group; the second terminal device negotiates with the first terminal device to combine P2P groups, and obtains a negotiation result, and the negotiation result is used for Instructing to merge the second P2P group and the first P2P group into a third P2P group; the second terminal device establishes a Wi-Fi P2P connection with the first terminal device in the third P2P group .

In a possible design, before the second terminal device negotiates with the first terminal device on P2P group merging, the second terminal device sends second P2P status information to the first terminal device, The second P2P state information is used to indicate the second P2P group; and the second terminal device receives the first P2P state information sent by the first terminal device, the first P2P state information is used to indicate the Describe the first P2P group. The negotiation of P2P group merging between the second terminal device and the first terminal device includes: the second terminal device, based on the second P2P status information and the first P2P status information, negotiates with the first P2P status information A terminal device performs negotiation on P2P group merging.

In a possible design, if the negotiation result is the merging of the second P2P group into the first P2P group, the second terminal device, based on the service state of the second P2P group, Save the second P2P group service information; the second terminal device and the second GO perform P2P group disassembly, and the P2P group disassembly is used to disconnect the Wi-Fi connection between the second terminal device and the second GO -Fi P2P connection; the second terminal device initiates a Wi-Fi P2P connection request to the third GO; the second terminal device receives a confirmation message from the third GO, and the confirmation message is used to indicate The third GO allows the second terminal device to join the third P2P group.

In a possible design, the second terminal device restores the service state of the second terminal device in the second P2P group according to the service information of the second P2P group in the third P2P group.

In a possible design, the second terminal device sends the negotiation result to at least one other terminal device in the second P2P group, so that each of the other terminal devices from the second P2P group After disconnecting the chain, establish a Wi-Fi P2P connection with the third GO respectively.

Through the description of the above embodiments, those skilled in the art can clearly understand that for the convenience and brevity of the description, only the division of the above-mentioned functional modules is used as an example for illustration. In practical applications, the above-mentioned functions can be allocated according to needs It is completed by different functional modules, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. For the specific working process of the above-described system, device, and unit, reference may be made to the corresponding process in the foregoing method embodiments, and details are not repeated here.

Each functional unit in each embodiment of the embodiment of the present application may be integrated into one processing unit, or each unit may physically exist separately, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

If the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage The medium includes several instructions to enable a computer device (which may be a personal computer, server, or network device, etc.) or a processor to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: flash memory, mobile hard disk, read-only memory, random access memory, magnetic disk or optical disk, and other various media capable of storing program codes.

The above is only the specific implementation of the embodiment of the application, but the protection scope of the embodiment of the application is not limited thereto, and any changes or replacements within the technical scope disclosed in the embodiment of the application shall be covered by this application. Within the scope of protection of the application examples. Therefore, the protection scope of the embodiments of the present application should be based on the protection scope of the claims.

Claims

A wireless fidelity Wi-Fi direct communication method, characterized in that the method comprises:

The second terminal device receives a request for establishing a Wi-Fi P2P connection initiated by the first terminal device, or the second terminal device initiates a request for establishing a Wi-Fi P2P connection to the first terminal device, and the second terminal device belongs to a second point-to-point P2P group, the first terminal device belongs to the first P2P group;

The second terminal device negotiates with the first terminal device on P2P group merging, and obtains a negotiation result, and the negotiation result is used to indicate that the second P2P group and the first P2P group are merged into a third P2P group. P2P group;

The second terminal device establishes a Wi-Fi P2P connection with the first terminal device in the third P2P group.
The method according to claim 1, characterized in that before the second terminal device and the first terminal device perform the negotiation of P2P group merging, the method further comprises:

The second terminal device sends second P2P status information to the first terminal device, where the second P2P status information is used to indicate the second P2P group; and

The second terminal device receives first P2P status information sent by the first terminal device, where the first P2P status information is used to indicate the first P2P group;

The negotiation of P2P group merging between the second terminal device and the first terminal device includes:

The second terminal device performs a P2P group merger negotiation with the first terminal device based on the second P2P state information and the first P2P state information.
The method according to claim 1 or 2, wherein the negotiation of P2P group merging between the second terminal device and the first terminal device includes:

The second terminal device determines a second group owner GO role in the second P2P group and a first GO role in the first P2P group;

The second terminal device determines that the second GO or the first GO is the third GO in the third P2P group based on a preset merging rule;

The second terminal device outputs a negotiation result according to the third GO; wherein, if it is determined that the second GO is the third GO, the negotiation result is to merge the first P2P group into the third GO In the second P2P group; if it is determined that the first GO is the third GO, the negotiation result is to merge the second P2P group into the first P2P group.
The method according to claim 3, wherein if the negotiation result is the merging of the second P2P group into the first P2P group, the method further comprises:

The second terminal device saves the service information of the second P2P group based on the service state of the second P2P group;

The second terminal device and the second GO perform a P2P disassembly chain, and the P2P disassembly chain is used to disconnect the Wi-Fi P2P connection between the second terminal device and the second GO;

The second terminal device initiates a Wi-Fi P2P connection request to the third GO;

The second terminal device receives a confirmation message from the third GO, where the confirmation message is used to indicate that the third GO agrees that the second terminal device joins the third P2P group.
The method according to claim 4, characterized in that the method further comprises:

The second terminal device recovers the service status of the second terminal device in the second P2P group according to the service information of the second P2P group in the third P2P group.
The method according to any one of claims 1 to 5, wherein the method further comprises:

The second terminal device sends the negotiation result to at least one other terminal device in the second P2P group, so that each of the other terminal devices disconnects from the second P2P group, respectively, with the The third GO establishes a Wi-Fi P2P connection.
The method according to any one of claims 3 to 6, wherein the preset merging rules include one or more of the following rules:

The P2P group containing a small number of terminal devices is merged into the P2P group containing a large number of terminal devices;

The P2P group with low business priority is merged into the P2P group with high business priority;

The P2P group with small channel bandwidth is merged into the P2P group with large channel bandwidth;

The P2P group with less business volume is merged into the P2P group with large business volume;

The P2P group with weak GO performance is merged into the P2P group with strong GO performance;

The P2P group of the initiator of the Wi-Fi P2P connection request is merged into the P2P group of the initiated party.
The method according to any one of claims 1 to 7, wherein the second terminal device establishes a Wi-Fi P2P connection with the first terminal device in the third P2P group, comprising:

If the second terminal device and the first terminal device are client GC roles in the third P2P group, the second terminal device and the first terminal device pass through the third P2P group The GO role in establishes a Wi-Fi P2P connection.
A Wi-Fi direct communication system, characterized in that it includes a first P2P group and a second P2P group, the first P2P group includes a first owner GO and a first terminal device, and the second P2P group includes A second GO and a second terminal device, the first terminal device is the client GC in the first group of the first P2P group, and the second terminal device is the second GC of the second P2P group; wherein ,

The first terminal device initiates a request to establish a Wi-Fi P2P connection to the second terminal device, or the second terminal device initiates a request to establish a Wi-Fi P2P connection to the first terminal device;

The first terminal device negotiates with the second terminal device on P2P group merging, and obtains a negotiation result, where the negotiation result is used to indicate that the second P2P group and the first P2P group are merged into a third P2P group. P2P group;

Based on the negotiation result, the first P2P group and the second P2P form the third P2P group;

The first terminal device and the second terminal device establish a Wi-Fi P2P connection in the third P2P group.
The system according to claim 9, wherein, before the first terminal device and the second terminal device perform the negotiation of P2P group merging,

The first terminal device sends first P2P state information to the second terminal device, or the second terminal device sends second P2P state information to the first terminal device; the first P2P state information is used for Indicate the first P2P group, and the second P2P state information is used to indicate the second P2P group;

The negotiation of P2P group merging between the first terminal device and the second terminal device includes: determining a negotiation result based on the second P2P state information and the first P2P state information.
The system according to claim 9 or 10, wherein the negotiation of P2P group merging between the first terminal device and the second terminal device includes:

determining that the second GO or the first GO is a third GO in the third P2P group based on a preset merging rule;

Outputting a negotiation result according to the third GO; wherein, if it is determined that the second GO is the third GO, the negotiation result is to merge the first P2P group into the second P2P group; if If it is determined that the first GO is the third GO, then the negotiation result is to merge the second P2P group into the first P2P group.
The system according to claim 11, wherein if the negotiation result is the merging of the second P2P group into the first P2P group, the second terminal device based on the second P2P The business status of the group, saving the business information of the second P2P group;

The second terminal device and the second GO perform a P2P disassembly chain, and the P2P disassembly chain is used to disconnect the Wi-Fi P2P connection between the second terminal device and the second GO;

The second terminal device initiates a request to establish a Wi-Fi P2P connection to the third GO; and the second GO initiates a request to establish a Wi-Fi P2P connection to the third GO;

The second terminal device receives a confirmation message from the third GO, where the confirmation message is used to indicate that the third GO agrees that the second terminal device joins the third P2P group; and the second The GO receives a confirmation message from the third GO, the confirmation message is used to indicate that the third GO agrees that the second GO joins the third P2P group; the second GO is the third P2P group GC in the group.
The system according to claim 12, wherein the second terminal device restores the connection between the second terminal device and the second GO in the third P2P group according to the service information of the second P2P group. The service status of the second P2P group.
The system according to any one of claims 9 to 13, wherein the second terminal device sends the negotiation result to at least one other terminal device in the second P2P group; and,

The first terminal device sends the negotiation result to at least one other terminal device in the first P2P group.
The system according to any one of claims 11 to 14, wherein the preset merging rules include one or more of the following rules:

The P2P group containing a small number of terminal devices is merged into the P2P group containing a large number of terminal devices;

The P2P group with low business priority is merged into the P2P group with high business priority;

The P2P group with small channel bandwidth is merged into the P2P group with large channel bandwidth;

The P2P group with less business volume is merged into the P2P group with large business volume;

The P2P group with weak GO performance is merged into the P2P group with strong GO performance;

The P2P group of the initiator of the Wi-Fi P2P connection request is merged into the P2P group of the initiated party.
The system according to any one of claims 9 to 15, wherein the first terminal device and the second terminal device establish a Wi-Fi P2P connection in the third P2P group, comprising:

The first terminal device and the second terminal device establish a Wi-Fi P2P connection through the GO role in the third P2P group.
A terminal device, characterized by comprising: one or more processors; one or more memories;

The one or more memories are used to store one or more computer programs and data information; wherein the one or more computer programs include instructions;

When the instructions are executed by the one or more processors, the terminal device is made to execute the method according to any one of claims 1-8.
A computer-readable storage medium, characterized by comprising a computer program or instruction, when the computer program or instruction is run on a computer, the method according to any one of claims 1 to 8 is executed.
A computer program product, characterized in that it includes a computer program, and when the computer program is run on a computer, the computer is made to execute the method according to any one of claims 1 to 8.