WO2021180083A1

WO2021180083A1 - Bluetooth communication system and wireless communication system

Info

Publication number: WO2021180083A1
Application number: PCT/CN2021/079787
Authority: WO
Inventors: 王良; 章亚; 萧维廷
Original assignee: 华为技术有限公司
Priority date: 2020-03-10
Filing date: 2021-03-09
Publication date: 2021-09-16
Also published as: CN113395685B; CN113395685A

Abstract

The present invention relates to a Bluetooth communication system and a wireless communication system. The Bluetooth communication system comprises a Bluetooth earphone, a first electronic device and a second electronic device, wherein the Bluetooth earphone is configured to: receive a first operation of a user; send a BLE broadcast to the first electronic device and the second electronic device in response to the first operation; receive a first response message from the first electronic device; and receive a second response message from the second electronic device, determine, on the basis of the first response message and the second response message, that the first electronic device has a priority, and send a first instruction to the first electronic device, such that the first electronic device makes a pairing prompt box pop up; and the first electronic device is configured to: in response to the first instruction, display, on a first interface, the pairing prompt box including information of the Bluetooth earphone. Therefore, a Bluetooth earphone can be quickly paired with a mobile phone without interference.

Description

Bluetooth communication system and wireless communication system

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office, the application number is 202010163215.0, and the application name is "Bluetooth communication system and wireless communication system" on March 10, 2020, the entire content of which is incorporated into this application by reference .

Technical field

The present invention relates to the field of communication, in particular to a Bluetooth communication system and a wireless communication system.

Background technique

With the development of wireless communication technology, more and more electronic devices have changed their communication methods from wired communication to wireless communication. For example, earphones and mobile phones, which are closely related to people's lives, have gradually changed from the original wired communication method to the wireless Bluetooth communication method.

In the process of pairing a Bluetooth headset with a mobile phone, etc., it is usually in accordance with the standard Bluetooth standard protocol, such as scanning and paging process. For example, the terminal device receives the user's command to turn on the Bluetooth switch in the settings, and the terminal device scans the surrounding proximity to find broadcast. When the terminal device scans the proximity discovery broadcast sent by the Bluetooth headset, the terminal device pops up a pairing query box. After the terminal device receives the user's first permission instruction, the Bluetooth headset is successfully paired with the mobile phone.

Summary of the invention

In order to make the above-mentioned content of the present invention more obvious and understandable, a detailed description is given below of preferred embodiments in conjunction with the accompanying drawings.

In the first aspect, according to some embodiments of the present application, a Bluetooth communication system includes a Bluetooth headset, a first electronic device, and a second electronic device. The Bluetooth headset is configured to: receive a user's first operation; In one operation, send a BLE broadcast to the first electronic device and the second electronic device; receive the first response message of the first electronic device; receive the second response message of the second electronic device, based on the first response message and the second response message, It is determined that the first electronic device has priority, and a first instruction is sent to the first electronic device so that the first electronic device pops up a pairing prompt box; the first electronic device is configured to: in response to the first instruction, display on the first interface that contains There is a pairing prompt box with information about the Bluetooth headset.

In some embodiments, the first response message carries information about the first transmission power of the first electronic device; the second response message carries information about the second transmission power of the second electronic device, and the Bluetooth headset is configured to: A transmit power and the first RSSI of the first response message, calculate the first loss or first distance; based on the second transmit power and the second RSSI of the second response message, calculate the second loss or second distance, based on the first For a loss and a second loss, it is determined that the first electronic device has priority, or based on the first distance and the second distance, it is determined that the first electronic device has priority.

In some embodiments, when the first transmission power of the first electronic device is the same as the second transmission power of the second electronic device, the Bluetooth headset is configured to: The second RSSI determines that the first electronic device has priority.

In some embodiments, the first electronic device is configured to: the pairing prompt box includes a user option, and the second operation of the user with respect to the user option is received; in response to the second operation, the Bluetooth headset is successfully paired with the first electronic device.

In some embodiments, the information of the Bluetooth headset includes at least one of the name of the Bluetooth headset and the icon of the Bluetooth headset.

In some embodiments, the first instruction is sent to the first electronic device through a link or broadcast.

In the second aspect, a Bluetooth headset communication method provided according to some embodiments of the present application includes the following steps: receiving a user's first operation; in response to the first operation, sending a BLE broadcast to the first electronic device and the second electronic device Electronic device; receiving the first response message of the first electronic device; receiving the second response message of the second electronic device, based on the first response message and the second response message, determining that the first electronic device has priority, and sending the first instruction to The first electronic device causes the first electronic device to pop up a pairing prompt box.

In some embodiments, the first response message carries the information of the first transmission power of the first electronic device; the second response message carries the information of the second transmission power of the second electronic device, based on the first response message and the second transmission power. In response to the message, it is determined that the first electronic device has priority, and the step of sending a first instruction to the first electronic device to cause the first electronic device to pop up a pairing prompt box includes: a first RSSI based on the first transmission power and the first response message Calculate to obtain the first loss or first distance; calculate based on the second transmit power and the second RSSI of the second response message to obtain the second loss or second distance, and determine the first electronic device based on the first loss and the second loss Has priority, or determines that the first electronic device has priority based on the first distance and the second distance.

In some embodiments, when the first transmission power of the first electronic device is the same as the second transmission power of the second electronic device, based on the first response message and the second response message, it is determined that the first electronic device has priority, and the transmission The step of sending the first instruction to the first electronic device to make the first electronic device pop up the pairing prompt box includes: determining that the first electronic device has priority based on the first RSSI of the first response message and the second RSSI of the second response message .

In a third aspect, a wireless communication system provided according to some embodiments of the present application includes a mobile phone, a first screen projection device, and a second screen projection device. The mobile phone is configured to: receive a user's first operation; In one operation, send a screencast broadcast to the first screencast device and the second screencast device; receive the first response message from the first screencast device; receive the second response message from the second screencast device, based on the first response message and In the second response message, it is determined that the first screen projection device has priority, and the first instruction is sent to the first screen projection device to cause the first screen projection device to pop up a screen projection prompt box; the first screen projection device is configured to: respond to the first screen projection device One instruction, a screen projection prompt box is displayed on the first interface.

In some embodiments, the first response message carries information about the first transmission power of the first screen projection device; the second response message carries information about the second transmission power of the second screen projection device, and the mobile phone is configured to: The first transmission power and the first RSSI of the first response message are calculated to obtain the first loss or the first distance; based on the second transmission power and the second RSSI of the second response message, the second loss or the second distance is calculated, based on For the first loss and the second loss, it is determined that the first screen projection device has priority, or based on the first distance and the second distance, it is determined that the first screen projection device has priority.

In some embodiments, when the first transmission power of the first projection device is the same as the second transmission power of the second projection device, the mobile phone is configured to: based on the first RSSI and the second response message of the first response message The second RSSI determines that the first screen projection device has priority.

In some embodiments, the first screen projection device is configured to: the screen projection prompt box includes a user option, and receives a second operation of the user for the user option; in response to the second operation, the mobile phone and the first screen projection device successfully cast the screen.

In a fourth aspect, a mobile phone communication method according to some embodiments of the present application includes the following steps: receiving a user's first operation; in response to the first operation, sending a screencast broadcast to the first screencasting device and the second screencasting device Second screen projection device; receive the first response message of the first screen projection device; receive the second response message of the second screen projection device, and determine that the first screen projection device has priority based on the first response message and the second response message, Send the first instruction to the first screen projection device to make the first screen projection device pop up a screen projection prompt box.

In some embodiments, the first response message carries information about the first transmission power of the first screen projection device; the second response message carries information about the second transmission power of the second screen projection device, based on the first response message and In the second response message, it is determined that the first screen projection device has priority, and the step of sending the first instruction to the first screen projection device to make the first screen projection device pop up the screen projection prompt box includes: based on the first transmission power and the first The first RSSI of the response message is calculated to obtain the first loss or the first distance; based on the second transmit power and the second RSSI of the second response message, the second loss or the second distance is calculated, based on the first loss and the second loss , Determine that the first screen projection device has priority, or determine that the first screen projection device has priority based on the first distance and the second distance.

In some embodiments, when the first transmission power of the first projection device is the same as the second transmission power of the second projection device, it is determined that the first projection device has priority based on the first response message and the second response message. In the first stage, sending a first instruction to the first screen projection device to make the first screen projection device pop up a screen projection prompt box includes: based on the first RSSI of the first response message and the second RSSI of the second response message, determining the first A screen projection device has priority.

In the fifth aspect, a terminal provided according to some embodiments of the present application includes: a processor, a memory, and a touch screen, the memory, the touch screen and the processor are coupled, the memory is used to store computer program codes, and the computer program codes include computer instructions, When the processor reads the computer instructions from the memory, so that the terminal performs the following steps: receiving the user's first operation; in response to the first operation, sending a BLE broadcast to the first electronic device and the second electronic device; receiving the first electronic device First response message of the second electronic device; receiving the second response message of the second electronic device, based on the first response message and the second response message, determining that the first electronic device has priority, and sending the first instruction to the first electronic device to make the first The electronic device pops up a pairing prompt box.

In a sixth aspect, a terminal provided according to some embodiments of the present application includes: a processor, a memory, and a touch screen, the memory, the touch screen and the processor are coupled, the memory is used to store computer program codes, and the computer program codes include computer instructions, When the processor reads the computer instructions from the memory, so that the terminal performs the following steps: receiving the user's first operation; in response to the first operation, sending a screencast broadcast to the first screencasting device and the second screencasting device; receiving the first operation A first response message of a projection device; receiving a second response message of a second projection device, based on the first response message and the second response message, determine that the first projection device has priority, and send the first instruction to the first The screen projection device so that the first screen projection device pops up a screen projection prompt box.

In some embodiments, the first response message carries information about the first transmission power of the first screen projection device; the second response message carries information about the second transmission power of the second screen projection device, based on the first response message and In the second response message, it is determined that the first screen projection device has priority, and the step of sending the first instruction to the first screen projection device to make the first screen projection device pop up the screen projection prompt box includes: based on the first transmission power and the first The first RSSI of the response message is calculated to obtain the first loss or the first distance; based on the second transmit power and the second RSSI of the second response message, the second loss or the second distance is calculated, based on the first loss and the second loss , It is determined that the screen projection electronic device has priority, or based on the first distance and the second distance, it is determined that the first screen projection device has priority.

In a seventh aspect, according to some embodiments of the present application, a method for determining a delivery service recipient device in a process of triggering a predetermined service is provided, which is used in a system including multiple electronic devices, and the multiple electronic devices include the The method includes the following steps: at least two service receiver devices respectively send service availability broadcasts for predetermined services; the service initiator device scans and receives services from The service availability broadcast of at least two service receiver devices; the service initiator device determines the priority of at least two service receiver devices based on the scanned RSSI of the service availability broadcast and the information on the transmit power of the service receiver carried by it, The final service receiver device is determined based on the priority; and the service initiator device delivers the service to the final service receiver device.

In some embodiments, the service initiator device determines the priority of at least two service receiver devices based on the scanned RSSI of the service availability broadcast and the information on the transmission power of the service receiver carried by it, including: The initiator device respectively calculates the distance between the service initiator device and each service receiver device based on the RSSI broadcast by the scanned service availability and the information about the transmission power of the service receiver, and determines at least The priority of the two service receiver devices.

In some embodiments, the service initiator device determines the priority of at least two service receiver devices based on the scanned RSSI of the service availability broadcast and the information on the transmission power of the service receiver carried by it, including: The initiator device calculates the loss between the service initiator device and each service receiver device based on the RSSI broadcast by the scanned service availability and the information of the service receiver’s transmit power carried by it, and determines at least the loss according to the loss The priority of the two service receiver devices.

In some embodiments, it further includes: the service initiator device selecting the service receiver device corresponding to the service availability broadcast with the smallest distance or loss in the priority.

In some embodiments, the service availability broadcast is a feedback broadcast based on the service-based broadcast sent by the service initiator.

In some embodiments, the feedback broadcast carries the first distance or first loss corresponding to the service-based broadcast sent by the service initiator device.

In some embodiments, the service initiator device separately calculates the distance between the service initiator device and each service receiver device based on the scanned RSSI of the service availability broadcast and the information about the transmission power of the service receiver carried by it. , And according to the distance, the step of determining the priority of at least two service receiver devices includes: the service initiator device broadcasts the corresponding second distance or second loss and the corresponding service-based broadcast based on each scanned feedback Corresponding to the first distance or first loss, calculate the average distance or average loss between the service initiator device and each service receiver device, and determine the average distance or average loss of at least two service receiver devices according to the average distance or average loss. priority.

In some embodiments, the service-based broadcast sent by the service initiator device includes: proximity discovery broadcast and/or screencast broadcast.

In some embodiments, the step of the service initiator device delivering the service to the final service recipient device includes: the service initiator device delivers the service to the final service recipient device in a broadcast mode or a link mode.

In the sixth aspect, an electronic device provided according to some embodiments of the present application, as a service initiator device, includes: a scanning receiving module, configured to scan and receive data from at least two service recipient devices for a predetermined service Service availability broadcast; a determining module, used to determine the priority of at least two service receiver devices based on the scanned RSSI of the service availability broadcast and the information on the transmission power of the service receiver carried by it, and determine the final priority based on the priority Business receiver equipment.

In a seventh aspect, a system of multiple electronic devices provided according to some embodiments of the present application includes: an electronic device as a service initiator device, and at least two electronic devices as a service receiver device, wherein the service The initiator device includes: a scanning receiving module for scanning and receiving service availability broadcasts for a predetermined service from at least two service receiving devices; a determining module for broadcasting RSSI based on the scanned service availability and its carrying Based on the information on the transmit power of the service receiver, the priority of at least two service receiver devices is determined, and the final service receiver device is determined based on the priorities.

Description of the drawings

The specific embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

Fig. 1 shows a schematic diagram 1 of an application scenario of a Bluetooth communication system provided according to some embodiments of the present application;

FIG. 2 shows a second schematic diagram of an application scenario of a Bluetooth communication system provided according to some embodiments of the present application;

FIG. 3 shows a real diagram of a true wireless Bluetooth headset and a charging box provided according to some embodiments of the present application;

Figure 4 shows a schematic diagram of a Bluetooth headset provided according to some embodiments of the present application;

Fig. 5 shows a schematic diagram of a mobile phone provided according to an embodiment of the present application;

FIG. 6 shows a schematic diagram of an interface of a pairing prompt box popping up on a mobile phone interface according to an embodiment of the present application;

FIG. 7 shows a schematic diagram of an interface for successfully pairing a mobile phone and a Bluetooth headset according to an embodiment of the present application;

FIG. 8 shows a flowchart of pairing a Bluetooth headset with a mobile phone according to some embodiments of the present application;

FIG. 9 shows a schematic diagram of an application scenario of a wireless communication system provided according to some embodiments of the present application;

FIG. 10 shows a flow chart 1 of screen projection of the mobile phone 100 and the screen projection device 300 according to some embodiments of the present application;

FIG. 11 shows a second flowchart of screen projection by the mobile phone 100 and the screen projection device 300 according to some embodiments of the present application;

Fig. 12 is a block diagram of a device according to an embodiment of the present application;

Fig. 13 is a block diagram of a system on chip (SoC) according to an embodiment of the present application.

Detailed ways

It should be understood that although the terms "first", "second", etc. may be used herein to describe various features, these features should not be limited by these terms. These terms are used only for distinction, and cannot be understood as indicating or implying relative importance. For example, without departing from the scope of the exemplary embodiment, the first feature may be referred to as the second feature, and similarly the second feature may be referred to as the first feature.

Unless the context dictates otherwise, the terms "comprising", "having" and "including" are synonymous. The phrase "A/B" means "A or B". The phrase "A and/or B" means "(A), (B) or (A and B)".

As used herein, the term "module" can refer to, as a part of it, or include: memory (shared, dedicated or group) for running one or more software or firmware programs, application specific integrated circuit (ASIC), Electronic circuits and/or processors (shared, dedicated or group), combinational logic circuits, and/or other suitable components that provide the described functions.

Fig. 1 shows a schematic diagram 1 of an application scenario of a Bluetooth communication system provided according to some embodiments of the present application. The Bluetooth communication system includes a Bluetooth headset 200 (for example, a true wireless Bluetooth headset) and an electronic device such as a mobile phone 100.

As shown in FIG. 1, the electronic device may be 4 mobile phones 100, or at least two mobile phones 100 such as 2, 3, 5, 10, etc. In various embodiments of the present application, the mobile phone 100 may be a smart phone (such as an Android mobile phone, an iOS mobile phone, a Windows Phone mobile phone, etc.). In other embodiments, the electronic device may also be a personal digital assistant, a handheld PC, a wearable device (for example, a smart watch, a smart bracelet, etc.), a portable media player, a handheld device, a navigation device, a server, a network device, Graphics devices, video game devices, laptop devices, virtual reality and/or augmented reality devices, IoT devices, industrial control devices, in-vehicle infotainment devices, streaming media client devices, e-books, reading devices, and other devices.

As shown in FIG. 1, during the process of pairing the Bluetooth headset 200 with the mobile phone 100, the mobile phone 100 turns on the Bluetooth function, and the Bluetooth headset 200 can enter the pairing mode with the mobile phone 100 through a box opening action or a key operation (for example, a long press).

If the Bluetooth headset 200 is not paired with the mobile phone 100 to be paired for the first time, then when the Bluetooth headset 200 sends a proximity discovery BLE broadcast through a box opening action or a key operation, the connection action with the mobile phone 100 can be automatically realized. This is because the Bluetooth headset 200 stores the Bluetooth address of the paired mobile phone 100. When the charging box of the Bluetooth headset 200 is turned on or the Bluetooth function is turned on, the Bluetooth headset 200 will automatically connect back to the last paired mobile phone 100, thereby Realize fast connection.

If the Bluetooth headset 200 is paired with the mobile phone 100 to be paired for the first time, when the Bluetooth headset 200 is opened or pressed, the Bluetooth headset 200 sends a proximity discovery BLE broadcast, and the mobile phone 100 receives the proximity discovery BLE from the Bluetooth headset 200 After the broadcast, a feedback broadcast is sent to the Bluetooth headset 200. Based on the feedback broadcast, the Bluetooth headset 200 sends a first instruction to the mobile phone 100, causing the mobile phone 100 to pop up a pairing prompt box asking the user whether to pair with the Bluetooth headset 200, and the mobile phone 100 receives the user's After allowing the pairing operation, the Bluetooth headset is successfully paired with the mobile phone.

Generally, the mobile phone 100 scans and receives the proximity discovery broadcast sent from the Bluetooth headset 200, and the mobile phone 100 determines the received signal strength indication (RSSI) size of the proximity discovery broadcast. As a criterion for judging whether the pairing prompt box pops up, the mobile phone 100 determines whether the RSSI of the proximity discovery broadcast exceeds a preset threshold. If the RSSI exceeds the preset threshold, the mobile phone 100 pops up a pairing prompt box to ask the user whether to pair.

As shown in Figure 2, the RSSIs of mobile phones A to D all exceed the preset threshold, and mobile phones A to D all pop up a pairing prompt box. If the target user wants to pair with the target mobile phone C, the bullet frames of mobile phones A, B, and D will easily disturb the use of the three mobile phones, and the user experience will be poor.

According to the Bluetooth communication system proposed by some embodiments of the present application, as shown in FIG. 1, when there are 4 mobile phones A to D near the Bluetooth headset 200, only the mobile phone C with the highest priority is triggered to pop up the pairing prompt box, thereby solving During the pairing process of the mobile phone 100 and the Bluetooth headset 200, multiple mobile phones 100 are triggered to pop up the pairing prompt box at the same time, which disturbs the problem of non-target users using the mobile phone, and realizes the fast and interference-free pairing of the Bluetooth headset 200 and the mobile phone 100, and improves the user experience .

FIG. 3 shows a real diagram of a true wireless Bluetooth headset 200 and a charging box provided according to some embodiments of the present application. The true wireless Bluetooth headset 200 is also called a true wireless stereo (TWS) headset. The TWS headset completely abandons the wire connection method and includes two headsets (such as a master headset and a slave headset). For example, when in use, a terminal device (also referred to as a transmitting device, such as a mobile phone 100) wirelessly connects to the master headset, and then the master headset connects to the slave headset wirelessly via Bluetooth, which can achieve true wireless separation of the left and right channels of Bluetooth. The left and right earphones of the TWS headset can form a stereo system through Bluetooth, so that the performance of listening to songs, talking, and wearing can be improved. In addition, either of the two earphones can also work independently. For example, when the master earphone is not connected to the slave earphone, the master earphone can return to mono sound quality.

Because the left and right earphones of TWS earphones have no physical connection characteristics, TWS earphones are generally equipped with a charging box that has both charging and storage functions. The charging box can provide power and storage functions for the wireless earphones. When there is no power, just put the Bluetooth earphone 200 in the box, the earphones can be automatically disconnected, and the charging box will charge the earphones.

The charging box is equipped with a function key (not shown in the figure). When the lid of the charging box is opened or the function key is pressed for a preset length of time (for example, 2 seconds), the Bluetooth headset 200 is in pairing mode and sends a BLE broadcast to Phone 100 with Bluetooth enabled.

FIG. 4 shows a schematic diagram of a Bluetooth headset 200 provided according to some embodiments of the present application. The Bluetooth headset 200 may include a speaker unit 221, a control unit 222, a sound receiving unit 223, a flexible printed circuit (FPC) 224, a battery 225, a charging unit 226, a sensor device (not shown in the figure), and the like. The Bluetooth headset 200 further includes an auxiliary sound receiving unit 227, and the auxiliary sound receiving unit 227 may be a microphone, for example, a microphone that picks up background sounds in a call scene.

The speaker unit 221 may be an electro-acoustic transducer for converting audio electrical signals into sound signals, and the speaker unit 221 may be a moving coil unit, a moving iron unit, or a ring-iron mixing unit. The loudspeaker unit 221 can also be called a horn or a loudspeaker. Therefore, the aforementioned moving coil unit, moving iron unit, or coil-iron mixing unit can also be referred to as a moving coil speaker (or electrodynamic speaker), a moving iron speaker, and a coil-iron mixing unit, respectively. Hybrid speakers.

In an implementation scheme, the speaker unit 221 can receive audio signals and control signals (such as streaming media control signals) transmitted by the terminal device, and can also transmit the received audio signals and control signals to other speaker units. For example, when the speaker unit 221 is used as the main speaker, the audio signal and control signal received from the terminal device can be transmitted to the slave speaker, so that the audio is played synchronously in the two separate speakers, thereby achieving a stereo effect.

The control unit 222 may include a motherboard (or called a main chip or a main control chip), a Bluetooth chip, etc., and may be used for charging management, signal transmission, etc. In some embodiments, the control unit 222 may also be used for active noise reduction. Optionally, the control unit 222 may be a microprocessor.

The sound receiving unit 223 includes a call microphone (MIC), a waterproof and dustproof film, etc. fixed on a flexible printed circuit (FPC) 224.

The positive and negative electrodes of the battery 225 are electrically connected to the flexible circuit board 224, and the circuit in the flexible circuit board 224 can charge the battery 225 and power the Bluetooth headset 200 from the battery 225. Wherein, the cavity formed by the earphone handle may also be provided with an antenna for receiving and sending signals.

The charging unit 226 is used to charge the battery 225. One end of the charging unit 226 is connected to the flexible circuit board 224, and the other end is outside the earphone and can be contacted with the metal contacts in the charging box to form a charging circuit. When charging the battery 225, the charging contacts of the earphones contact the contacts in the charging box to form an electrical connection. The charging current can pass through the circuit on the flexible circuit board 224 from the positive charging contact to the positive of the battery 225, and then From the negative electrode of the battery 225 to the negative charging contact, and finally back to the charging box.

In some embodiments, the sensor devices included in the Bluetooth headset 200 may include an optical sensor, an acceleration sensor, a distance sensor, a bone conduction sensor, etc. These sensor devices may be arranged on the flexible circuit board 224 for sensing or receiving external signals and the like.

In some embodiments, the Bluetooth headset 200 further includes an auxiliary sound receiving unit 227. The auxiliary sound receiving unit 227 may be another microphone, thereby forming a dual microphone with the sound receiving unit 223, where the sound receiving unit 223 may be used for ordinary users to call. The microphone is used to collect human voices (that is, used to pick up the voice of the call), and the auxiliary sound receiving unit 227 can be a microphone that picks up the background sound and has a background noise collection function for collecting ambient noise. The auxiliary sound receiving unit 227 is far away from the sound receiving unit 223. The dual-microphone design can effectively resist the interference of environmental noise around the headset, greatly improving the clarity of normal calls.

FIG. 5 shows a schematic diagram of a mobile phone 100 provided according to an embodiment of the present application. As shown in FIG. 5, the mobile phone 100 may include a processor 110, an external memory interface 120, an internal memory 121, a universal serial bus (USB) interface 130, a charging management module 140, a power management module 141, and a battery 142, Antenna 1, antenna 2, mobile communication module 150, wireless communication module 160, audio module 170, speaker 170A, receiver 170B, microphone 170C, earphone interface 170D, sensor module 180, button 190, motor 191, indicator 192, camera 193, A display screen 194, a subscriber identification module (SIM) card interface 195, and so on.

The sensor module 180 may include a pressure sensor 180A, a gyroscope sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity light sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, and ambient light Sensor 180L, bone conduction sensor 180M, etc.

It can be understood that the structure illustrated in the embodiment of the present invention does not constitute a specific limitation on the electronic device 100. In other embodiments of the present application, the electronic device 100 may include more or fewer components than those shown in the figure, or combine certain components, or split certain components, or arrange different components. The illustrated components can be implemented in hardware, software, or a combination of software and hardware.

In some embodiments, the processor 110 may include one or more interfaces. The interface may include an integrated circuit (inter-integrated circuit, I2C) interface, an integrated circuit built-in audio (inter-integrated circuit sound, I2S) interface, a pulse code modulation (pulse code modulation, PCM) interface, and a universal asynchronous transmitter/receiver (universal asynchronous) interface. receiver/transmitter, UART) interface, mobile industry processor interface (MIPI), general-purpose input/output (GPIO) interface, and/or subscriber identity module (SIM) interface.

The I2S interface can be used for audio communication. In some embodiments, the processor 110 may include multiple sets of I2S buses. The processor 110 may be coupled with the audio module 170 through an I2S bus to implement communication between the processor 110 and the audio module 170. In some embodiments, the audio module 170 may transmit audio signals to the wireless communication module 160 through an I2S interface, so as to realize the function of answering calls through a Bluetooth headset.

The PCM interface can also be used for audio communication to sample, quantize and encode analog signals. In some embodiments, the audio module 170 and the wireless communication module 160 may be coupled through a PCM bus interface. In some embodiments, the audio module 170 may also transmit audio signals to the wireless communication module 160 through the PCM interface, so as to realize the function of answering calls through the Bluetooth headset. Both the I2S interface and the PCM interface can be used for audio communication.

The UART interface is a universal serial data bus used for asynchronous communication. The bus can be a two-way communication bus. It converts the data to be transmitted between serial communication and parallel communication. In some embodiments, the UART interface is generally used to connect the processor 110 and the wireless communication module 160. For example, the processor 110 communicates with the Bluetooth module in the wireless communication module 160 through the UART interface to realize the Bluetooth function. In some embodiments, the audio module 170 may transmit audio signals to the wireless communication module 160 through a UART interface, so as to realize the function of playing music through a Bluetooth headset.

It can be understood that the interface connection relationship between the modules illustrated in the embodiment of the present invention is merely a schematic illustration, and does not constitute a structural limitation of the electronic device 100. In other embodiments of the present application, the electronic device 100 may also adopt different interface connection modes in the foregoing embodiments, or a combination of multiple interface connection modes.

The wireless communication module 160 can provide applications on the electronic device 100 including wireless local area networks (WLAN) (such as wireless fidelity (Wi-Fi) networks), bluetooth (BT), and global navigation satellites. System (global navigation satellite system, GNSS), frequency modulation (frequency modulation, FM), near field communication technology (near field communication, NFC), infrared technology (infrared, IR) and other wireless communication solutions. The wireless communication module 160 may be one or more devices integrating at least one communication processing module. The wireless communication module 160 receives electromagnetic waves via the antenna 2, frequency modulates and filters the electromagnetic wave signals, and sends the processed signals to the processor 110. The wireless communication module 160 may also receive a signal to be sent from the processor 110, perform frequency modulation, amplify, and convert it into electromagnetic waves to radiate through the antenna 2.

Hereinafter, referring to FIG. 1 and in conjunction with FIG. 6, the Bluetooth communication system according to the specific embodiment of the present application will be described.

After receiving the user's operation to turn on the Bluetooth function on the setting interface of the mobile phone 100, the Bluetooth pairing function of the mobile phone 100 is activated. For example, as shown in FIG. Background scanning status. When the Bluetooth module function of the mobile phone 100 is turned on, the Bluetooth module of the mobile phone 100 can perform background scanning regardless of whether the mobile phone is in a locked or on-screen state.

When the charging box with the Bluetooth headset 200 is opened (the state is shown in Figure 3), or the function keys on the charging box are long pressed for a preset length of time (for example, 2 seconds), the charging box indicator light (for example, blue The light) flashes. At this time, the Bluetooth headset 200 enters the pairing state and sends a proximity discovery broadcast. The BLE broadcast carries information such as the MAC address of the Bluetooth headset 200, the identifier of the headset manufacturer, and the transmission power.

As shown in FIG. 1, when the four mobile phones A to D located near the Bluetooth headset 200 scan and receive the proximity discovery BLE broadcast from the Bluetooth headset 200, the mobile phones A to D immediately send feedback broadcasts to the Bluetooth headset 200. The feedback broadcast carries information corresponding to the transmission power, signal strength, MAC address, and mobile phone manufacturer identification of each mobile phone 100.

The Bluetooth headset 200 receives the corresponding feedback broadcasts from the mobile phones A to D, and calculates and obtains the corresponding loss or distance based on the RSSI of the feedback broadcast and the information corresponding to the transmit power of each mobile phone. Furthermore, the Bluetooth headset 200 determines the mobile phone with the highest priority among the mobile phones A to D based on the loss or distance. For example, the mobile phone C has the highest priority. Then, as shown in FIG. 6, the Bluetooth headset 200 sends the first command to the mobile phone C. In this way, the mobile phone C displays the pairing prompt box 20 containing the information of the Bluetooth headset 200. In some embodiments, the first command may be a Bluetooth private command. After receiving the command, the mobile phone 100 may pop up the pairing prompt box 20.

The information of the Bluetooth headset 200 may be at least one of the name of the Bluetooth headset 200 and the icon of the Bluetooth headset 200. In other words, the pairing prompt box 20 can display the name of the Bluetooth headset 200. For example, as shown in FIG. 6, the name of the Bluetooth headset 200 is the initial name "HUAWEI FreeBuds 3", and the name of the Bluetooth headset 200 can also be user-defined. The name, for example, "Zhang San's Freebuds3", so that the user can quickly identify whether the Bluetooth headset 200 he wants to pair with.

The pairing prompt box 20 may also display an icon of the Bluetooth headset 200, and the icon may be a physical image of the Bluetooth headset 200, so that the user can quickly and accurately identify whether the Bluetooth headset 200 is to be paired. For example, if the Bluetooth headset 200 is white, then the pairing prompt box 20 can display a white icon of the Bluetooth headset 200 that is completely consistent with its appearance; if the Bluetooth headset 200 is red, then the pairing prompt box 20 can display a red icon that is consistent with its appearance. The icon of the Bluetooth headset 200 that looks exactly the same. Furthermore, the user can quickly and accurately identify whether the Bluetooth headset 200 is the Bluetooth headset 200 that he wants to pair with for subsequent operations. For example, as shown in FIG. 6, the pairing prompt box 20 performs "Agree 21" or "Ignore 22" Option operation.

The pairing prompt box 20 can also display information including the name of the Bluetooth headset 200 and the icon of the Bluetooth headset 200 at the same time, so that the user can more quickly and accurately identify whether the Bluetooth headset 200 is to be paired.

The pairing prompt box 20 can also respectively display the power of the left earphone (L), the right earphone (R) and the charging box, so that the user can clearly understand the power status of the two earphones and the charging box and charge them in time.

As shown in Figure 6, if the user clicks the "Agree 21" option on the interface of the pairing prompt 20 popped up by the mobile phone C, then the Bluetooth headset 200 and the mobile phone 100 establish a connection according to the Bluetooth protocol, and the mobile phone C and the Bluetooth headset 200 are successfully paired . As shown in Figure 7, a headset symbol 30 is displayed in the upper right corner of the C interface of the mobile phone. Mobile phone C will enter the next interface. The user can perform some quick operations and active noise reduction operations based on the next interface.

If the user clicks the “Ignore 22” option on the interface of the pairing prompt box 20 popped up by the mobile phone C, then the pairing of the mobile phone C and the Bluetooth headset 200 is unsuccessful.

In some embodiments, the pairing prompt 20 of the mobile phone 100 may pop up when the mobile phone C is in a locked or bright screen state. When the mobile phone 100 is in the locked screen state, the user can perform an option operation such as "Agree 21" or "Ignore 22" on it through the pop-up pairing prompt box 20. When the user clicks the "Agree" option, if the mobile phone 100 does not have a password, the mobile phone 100 can be automatically unlocked so that the mobile phone 100 is in a bright screen state, which is convenient for the user to perform operations such as listening to songs or playing TV shows; if the mobile phone has a password, The mobile phone 100 requires the user to perform an unlocking operation to ensure the privacy of the mobile phone 100.

In other embodiments, the pairing prompt box 20 of the mobile phone 100 can only pop up when the mobile phone 100 is in a bright screen state, which avoids the misoperation of the Bluetooth headset 200 to cause the mobile phone 100 to pop up the pairing prompt box 20, which increases unnecessary users. operate.

In some embodiments, the pairing prompt box 20 of the mobile phone 100 may pop up during the business process of the mobile phone. For example, the user has put on the power amplifier video on the mobile phone 100, and then the user wants to wear the Bluetooth headset 200 to watch the remaining videos. The user can open the charging box of the Bluetooth headset 200, or press and hold (for example, 2 seconds) the function key on the charging box. The Bluetooth headset 200 can be established through the operation options shown in FIG. 6, and the mobile phone 100 switches the video sound from the power amplifier to the Bluetooth headset 200.

In other embodiments, the pairing prompt 20 of the mobile phone 100 may not pop up when the mobile phone is performing a business, such as watching a video or playing a game, so as to disturb the target user's use of the mobile phone.

In still other embodiments, the pairing prompt 20 of the mobile phone 100 can be set by the user on the mobile phone, so that the user can pop up when performing certain services such as watching videos, and in other services such as reading e-books, playing games, etc. Do not pop up when the business is inconvenient to be interrupted.

In some other embodiments, the Bluetooth headset 200 may also determine the priority of the mobile phone 100. For example, the priority of the priority is C, A, B, D. Since the Bluetooth headset 200 has no display device, the priority can be set. The list is sent to any mobile phone, for example, to mobile phone C. The priority list can be displayed on mobile phone C. Based on the user's selection operation for the list, for example, select mobile phone A in the list. After receiving the instruction, the Bluetooth headset sends a pop-up instruction to The mobile phone A causes the mobile phone A to display the pairing prompt box 20, and the receiving user receives the pairing operation on the mobile phone A, and the mobile phone A and the Bluetooth headset 200 establish a connection with the mobile phone. Instead of determining the priority of the mobile phone 100, directly send a pop-up command to the mobile phone with the highest priority, so that the pairing prompt box 20 will pop up, thereby increasing the user's controllability.

In some embodiments, the mobile phone C may automatically close or hide the prompt box if it does not receive the user's input operation within a predetermined time, for example, 5 seconds.

In some embodiments, the communication between the mobile phone 100 and the Bluetooth headset 200 may be through a predetermined private frequency, such as a Bluetooth 5G Hz frequency, so that the mobile phone 100 and the Bluetooth headset 200 of the same manufacturer can communicate with each other.

FIG. 8 shows a flowchart of pairing a Bluetooth headset 200 with a mobile phone C according to some embodiments of the present application. Mobile phones A to D have enabled the Bluetooth background scan function. The user triggers an action to make the Bluetooth headset 200 enter the pairing mode. The triggering action may be by opening the charging box of the Bluetooth headset 200, or long pressing (for example, 2 seconds) a function key on the charging box.

The Bluetooth headset 200 sends and scans the proximity discovery BLE broadcast. The proximity discovery broadcast carries information such as the transmission power of the Bluetooth headset 200, the MAC address, and the identifier of the headset manufacturer.

After the mobile phones A to D scan and receive the proximity discovery broadcast from the Bluetooth headset 200, they immediately send feedback broadcasts A to D to the Bluetooth headset 200, respectively. The feedback broadcast carries information corresponding to the transmit power of each mobile phone. That is, feedback broadcast A carries information such as the transmission power of mobile phone A, feedback broadcast B carries information such as the transmission power of mobile phone B, feedback broadcast C carries information such as the transmission power of mobile phone C, and feedback broadcast D carries the transmission of mobile phone D. Power and other information.

The Bluetooth headset 200 can measure the RSSI of the feedback broadcast. The Bluetooth headset 200 calculates and obtains the corresponding loss or distance based on the RSSI of the feedback broadcast and the information corresponding to the transmit power of each mobile phone. That is, the Bluetooth headset 200 calculates the loss A or the distance A based on the RSSI of the feedback broadcast A and the transmit power of the mobile phone A carried by the feedback broadcast A, and the Bluetooth headset 200 calculates the loss A or the distance A based on the RSSI of the feedback broadcast B and the transmit power of the mobile phone B carried by the feedback broadcast B. Calculate and obtain loss B or distance B. Bluetooth headset 200 calculates and obtains loss C or distance C based on the RSSI of feedback broadcast C and the transmit power of mobile phone C carried by feedback broadcast C. Bluetooth headset 200 is carried based on RSSI of feedback broadcast D and feedback broadcast D. The transmit power of the mobile phone D is calculated to obtain the loss D or the distance D.

Furthermore, based on the loss A to D or the distance A to D, the Bluetooth headset 200 determines the mobile phone with the highest priority among the mobile phones A to D, for example, the mobile phone C has the highest priority, and sends the first command to the mobile phone C to pop up the pairing prompt box.

In some embodiments, the Bluetooth headset 200 may determine the priority of the four mobile phones A to D based on the loss. The lower the loss, the higher the priority. The specific calculation is as follows:

Loss calculation of mobile phone 100 sending feedback broadcast to Bluetooth headset 200

Loss = transmit power of mobile phone 100-Bluetooth headset 200 receives RSSI of feedback broadcast from the mobile phone. The loss calculation is done at the receiving end, namely the Bluetooth headset 200.

That is to say, when the transmit power of each mobile phone A to D is the same, the loss between the Bluetooth headset 200 and the mobile phone 100 can be directly determined by the RSSI size of the feedback broadcast received by the Bluetooth headset 200, that is, the larger the RSSI, It means that the smaller the loss, the higher the priority.

In other embodiments, the feedback broadcast may also carry information about the first loss, and the first loss is calculated based on the RSSI of the proximity discovery broadcast and the transmit power of the Bluetooth headset 200 carried by the proximity discovery broadcast. The specific calculation is as follows:

The Bluetooth headset 200 sends the loss calculation of the proximity discovery broadcast to the mobile phone 100

The first loss = the transmit power of the Bluetooth headset 200-the mobile phone 100 receives the RSSI of the proximity discovery broadcast from the Bluetooth headset 200, and the loss calculation is completed at the receiving end, that is, the mobile phone 100.

After the mobile phone 100 calculates and obtains the first loss, the mobile phone 100 can fill the first loss into the field of the feedback broadcast when sending the feedback broadcast to the Bluetooth headset 200, so that the Bluetooth mobile phone 100 can obtain the first loss.

The second loss is calculated based on the RSSI of the feedback broadcast and the transmit power of the mobile phone 100 carried by the feedback broadcast. The specific calculation is as follows:

The second loss = the transmit power of the mobile phone 100-the Bluetooth headset 200 receives the RSSI of the feedback broadcast from the mobile phone

After the Bluetooth headset 200 obtains the first loss and the second loss, the two are averaged to obtain the final average loss, and the priority of the mobile phone A to D is determined according to the average loss, thereby improving the accuracy of the loss calculation , Which can improve the accuracy of determining the priority of the mobile phone.

In other embodiments, the Bluetooth headset 200 may determine the priority of the four mobile phones A to D based on the distance. The smaller the distance, the higher the priority. The specific calculation is as follows:

Regarding the calculation of the distance, the distance d (km) and the loss Lfs (dB) satisfy the following relational expression, taking the wireless communication distance in free space propagation as an example.

Lfs(dB)=32.44+20lgd(km)+20lgf(MHz), where f is the operating frequency.

It can be seen from the above formula that the smaller the loss between the mobile phone 100 and the Bluetooth headset 200, the smaller the distance between the mobile phone 100 and the Bluetooth headset 200, and the higher the priority.

For the specific calculation, please refer to the aforementioned loss calculation method, first obtain the loss and then calculate the distance according to the relationship between loss and distance, so I will not repeat it here.

After the Bluetooth headset 200 determines the priorities of the mobile phones A to D, the first command in the pop-up box is sent to the mobile phone C with the highest priority, and the mobile phone C pops up a pairing prompt box 20. After the pairing request is approved by the user, the Bluetooth headset is paired successfully.

The Bluetooth headset 200 may send the first command of the bullet frame to the mobile phone C in a broadcast mode or a link mode.

Deliver business by broadcasting. The Bluetooth headset 200 broadcast payload carries a mobile phone identifier such as a MAC address or its ID information. After receiving the broadcast, the mobile phone C with the highest priority parses the identifier and matches it with its own identification information. If they are consistent, the service is accepted. If they are not the same, the service will not be accepted.

Deliver business via link. The Bluetooth headset 200 is paired with the mobile phone 100, and the Bluetooth headset 200 informs the mobile phone 100 to establish a pairing service through dedicated signaling.

Fig. 9 shows a schematic diagram of an application scenario of a wireless communication system provided according to some embodiments of the present application. The wireless communication system includes a screen projection device 300 and an electronic device such as a mobile phone 100.

As shown in FIG. 9, the screen projection device 300 may be 2 flat-screens and 2 TVs. In some other embodiments, the screen projection device 300 may also be a tablet computer, or both may be at least two screen projection devices 300 such as a TV. In various embodiments of the present application, the mobile phone 100 may be a smart phone (such as an Android mobile phone, an iOS mobile phone, a Windows Phone mobile phone, etc.). In other embodiments, the electronic device may also be a personal digital assistant, a handheld PC, a wearable device (for example, a smart watch, a smart bracelet, etc.), a portable media player, a handheld device, a navigation device, a network device, a graphics device , Video game equipment, virtual reality and/or augmented reality equipment, in-vehicle infotainment equipment, streaming media client equipment, e-books, reading equipment and other equipment.

As shown in FIG. 9, when the mobile phone 100 and the screen projection device 300 are about to project a screen, the screen projection device 300 turns on the background wireless scanning function, and the mobile phone 100 can trigger the screen projection service through specific operations such as the mobile phone menu or gestures.

When the mobile phone 100 is subjected to a key or gesture operation, the mobile phone 100 sends a screencast broadcast. After the projection device 300 receives the projection broadcast from the mobile phone 100, it immediately sends a feedback broadcast to the mobile phone 100. Based on the feedback broadcast, the mobile phone 100 first instructs the projection device 300 to pop up a projection prompt box to ask the user whether to use the projection The device 300 performs screen projection, and after the screen projection device 300 authenticates, the screen projection device 300 and the mobile phone 100 successfully cast the screen.

Generally, after the projection device 300 scans and receives the projection broadcast from the mobile phone 100, the projection device 300 immediately sends a feedback broadcast to the mobile phone 100. After the mobile phone receives the feedback broadcast from the projection device 300, it displays the information on the interface. The entire list of screen projection devices 300 selected by the user. Since the list is disorderly, the user needs to identify the name of the screen projection device 300 to be screened in all the lists, and click the name of the screen projection device 300 to post the screen projection service. Since the list of the screen projection device 300 is disordered, it is more difficult for the user to identify the device. For example, if the user has two Mi TVs in his home, there will be two screen projection devices 300 with the same name displayed on the list, which is difficult for the user to identify and the user experience is poor.

According to the wireless communication system proposed by some embodiments of the present application, as shown in FIG. 9, when there are 4 screen projection devices 300 (tablet A, tablet B, TV C, and TV D) near the mobile phone 100, only the trigger priority is highest. The TV C pops up the screen projection prompt box, which solves the problem that it is difficult to identify the target screen projection device 300 during the screen projection process of the screen projection device 300 and the mobile phone 100, and realizes the fast and interference-free connection between the mobile phone 100 and the screen projection device 300 Screen projection to improve user experience.

FIG. 10 shows the first flow chart of screen projection by the mobile phone 100 and the screen projection device 300 according to some embodiments of the present application.

It is determined that the mobile phone 100 and the tablets A and B and the TVs C and D are in the same wireless network state. When the mobile phone 100 receives the screen projection service from the user through a specific operation such as a menu or gesture, it sends a screen projection broadcast and scans. The projection broadcast carries information corresponding to the transmission power of the mobile phone 100 and so on.

Tablet A, B and TV C, D have started background scanning. After the tablets A and B and the TVs C and D scan and receive the projection broadcast from the mobile phone 100, they immediately send a feedback broadcast to the mobile phone 100. The feedback broadcast carries information corresponding to the transmission power of each projection device. That is, feedback broadcast A carries information such as the transmission power of tablet A; feedback broadcast B carries information such as the transmission power of tablet B; feedback broadcast C carries information such as the transmission power of TV C; feedback broadcast D carries information such as TV D's transmit power and other information.

The mobile phone 100 scans and receives feedback broadcasts from the tablets A and B and the TVs C and D, respectively. Its mobile phone 100 can measure the RSSI of the corresponding feedback broadcasts of tablets A and B and TVs C and D.

The mobile phone 100 calculates and obtains the corresponding loss or distance based on the RSSI of the feedback broadcast and the information corresponding to the transmission power of each screen projection device 300 carried by it. That is, the mobile phone 100 calculates the loss A or distance A based on the RSSI of the feedback broadcast A and the transmit power of the tablet A carried by the feedback broadcast A, and the mobile phone 100 calculates and obtains the loss A or the distance A based on the RSSI of the feedback broadcast B and the transmit power of the tablet B carried by the feedback broadcast B. Loss B or distance B, the mobile phone 100 calculates the loss C or distance C based on the RSSI of the feedback broadcast C and the transmit power of the TV C carried by the feedback broadcast C. The mobile phone 100 calculates the loss C or the distance C based on the RSSI of the feedback broadcast D and the TV D carried by the feedback broadcast D. The transmit power is calculated to obtain the loss D or the distance D.

Furthermore, the Bluetooth headset 200 determines the projection device with the highest priority among the projection devices A to D based on the loss A to D or the distance A to D, for example, the TV C has the highest priority, and sends the first command to the TV C to pop up Cast screen prompt box.

For specific loss and distance calculations, please refer to the description in the aforementioned Bluetooth communication system.

When the TV C pops up the screen projection prompt box and the screen projection request is approved by the user, the mobile phone 100 and the screen projection device 300 successfully cast the screen.

The mobile phone 100 may send the first instruction of the bullet frame to the mobile phone C in a broadcast mode or a link mode.

Deliver business by broadcasting. The mobile phone 100 broadcast payload carries a mobile phone identifier such as a MAC address or its ID information. After receiving the broadcast, the TV C with the highest priority parses the identifier and matches it with its own identification information. If they are consistent, the service is accepted. If they are not the same, the service will not be accepted.

Deliver business via link. The mobile phone 100 and the screen projection device 300 project a screen, and the mobile phone 100 informs the screen projection device 300 to establish a screen projection service through dedicated signaling.

In other embodiments, the mobile phone 10 may also provide the user with a priority list of the screen projection device 300 based on the distance, and the user determines that the screen projection action of the final screen projection device 300 occurs.

Therefore, the mobile phone 100 can automatically select the target screen projection device C from the multiple screen projection devices 300 according to the priority, and the user experience is good. Alternatively, the mobile phone 100 can provide the user with a priority list of projection devices 300 based on the distance, so that the user has a more intuitive judgment on each projection device 300, even if the list contains two projection devices with the same name. The screen device, the user can also identify the target screen projection device 300 quickly.

FIG. 11 shows the second flowchart of the screen projection of the mobile phone 100 and the screen projection device 300 according to some embodiments of the present application.

The phone has enabled wireless background scanning. The projection device 300 transmits a broadcast when it is allowed to receive services. The permission to receive services can be understood as the screen projection device 300 is in a state of waiting to be projected, and not in a business state such as playing videos or playing games.

The broadcast carries information corresponding to the transmission power of each projection device. That is, feedback broadcast A carries information such as the transmission power of tablet A; feedback broadcast B carries information such as the transmission power of tablet B; feedback broadcast C carries information such as the transmission power of TV C; feedback broadcast D carries information such as TV D's transmit power and other information.

The mobile phone 100 scans and receives the broadcast from each projection device 300 (tablet A, B and TV C, D). The mobile phone 100 can measure the RSSI of the corresponding feedback broadcast of the tablet A, B and TV C, D. The mobile phone 100 is based on the broadcast The RSSI and the information it carries corresponding to the transmit power of each projection device are calculated to obtain the corresponding loss or distance. That is, the mobile phone 100 calculates the loss A or distance A based on the RSSI of broadcast A and the transmit power of the tablet A carried by the broadcast A, and the mobile phone 100 calculates the loss B or distance based on the RSSI of the broadcast B and the transmit power of the tablet B carried by the broadcast B. B. The mobile phone 100 calculates the loss C or distance C based on the RSSI of broadcast C and the transmit power of the TV C carried by the broadcast C. The mobile phone 100 calculates the loss D or distance based on the RSSI of the broadcast D and the transmit power of the TV D carried by the broadcast D. D.

The mobile phone 100 may send the first command of the bullet frame to the mobile phone C in a broadcast mode or a link mode.

In other embodiments, the mobile phone 10 may also provide the user with a priority list of the screen projection device 300 based on the distance, and the user determines that the final screen projection device 300 will perform a screen projection action.

In addition to the pairing process between the Bluetooth headset 200 and the mobile phone 100 listed above, and the screen projection process between the mobile phone 100 and the screen projection device 300, the present application can also be applied to scenarios such as file transfer between electronic devices.

Referring to FIG. 12, shown is a block diagram of a system 1400 according to an embodiment of the present application. FIG. 12 shows an example system 1400 according to various embodiments. In one embodiment, the system 1400 may include one or more processors 1404, a system control logic 1408 connected to at least one of the processors 1404, a system memory 1412 connected to the system control logic 1408, and a system control logic 1408 connected to the system control logic 1408. The non-volatile memory (NVM) 1416, and the network interface 1420 connected with the system control logic 1408.

In some embodiments, the processor 1404 may include one or more single-core or multi-core processors. In some embodiments, the processor 1404 may include any combination of a general-purpose processor and a special-purpose processor (for example, a graphics processor, an application processor, a baseband processor, etc.). In an embodiment in which the system 1400 adopts an eNB (Evolved Node B, enhanced base station) 101 or a RAN (Radio Access Network, radio access network) controller 102, the processor 1404 may be configured to execute various conforming embodiments, For example, one or more of the multiple embodiments shown in FIGS. 8, 11, and 11.

In some embodiments, the system control logic 1408 may include any suitable interface controller to provide any suitable interface to at least one of the processors 1404 and/or any suitable device or component in communication with the system control logic 1408.

In some embodiments, the system control logic 1408 may include one or more memory controllers to provide an interface to the system memory 1412. The system memory 1412 may be used to load and store data and/or first instructions. In some embodiments, the memory 1412 of the system 1400 may include any suitable volatile memory, such as a suitable dynamic random access memory (DRAM).

The NVM/memory 1416 may include one or more tangible, non-transitory computer-readable media for storing data and/or first instructions. In some embodiments, the NVM/memory 1416 may include any suitable non-volatile memory such as flash memory and/or any suitable non-volatile storage device, such as HDD (Hard Disk

Drive, at least one of a CD (Compact Disc) drive, and a DVD (Digital Versatile Disc) drive.

The NVM/memory 1416 may include a part of the storage resources on the device where the system 1400 is installed, or it may be accessed by the device, but not necessarily a part of the device. For example, the NVM/storage 1416 can be accessed through the network via the network interface 1420.

In particular, the system memory 1412 and the NVM/memory 1416 may respectively include: a temporary copy and a permanent copy of the first instruction 1424. The first instruction 1424 may include: a first instruction that when executed by at least one of the processors 1404 causes the system 1400 to implement the method shown in FIG. 8, FIG. 11, and FIG. 11. In some embodiments, the first instructions 1424, hardware, firmware, and/or software components thereof may additionally/alternatively be placed in the system control logic 1408, the network interface 1420, and/or the processor 1404.

The network interface 1420 may include a transceiver, which is used to provide a radio interface for the system 1400, and then communicate with any other suitable devices (such as a front-end module, an antenna, etc.) through one or more networks. In some embodiments, the network interface 1420 may be integrated with other components of the system 1400. For example, the network interface 1420 may be integrated with at least one of the processor 1404, the system memory 1412, the NVM/memory 1416, and the firmware device (not shown) with the first instruction, when at least one of the processor 1404 executes When the first instruction is used, the system 1400 implements the methods shown in FIGS. 5 and 8-9.

The network interface 1420 may further include any suitable hardware and/or firmware to provide a multiple input multiple output radio interface. For example, the network interface 1420 may be a network adapter, a wireless network adapter, a telephone modem and/or a wireless modem.

In one embodiment, at least one of the processors 1404 may be packaged with the logic of one or more controllers for the system control logic 1408 to form a system in package (SiP). In one embodiment, at least one of the processors 1404 may be integrated with the logic of one or more controllers for the system control logic 1408 on the same die to form a system on chip (SoC).

The system 1400 may further include: an input/output (I/O) device 1432. The I/O device 1432 may include a user interface to enable a user to interact with the system 1400; the design of the peripheral component interface enables the peripheral component to also interact with the system 1400. In some embodiments, the system 1400 further includes a sensor for determining at least one of environmental conditions and location information related to the system 1400.

In some embodiments, the user interface may include, but is not limited to, a display (e.g., liquid crystal display, touch screen display, etc.), speakers, microphones, one or more cameras (e.g., still image cameras and/or video cameras), flashlights (e.g., LED flash) and keyboard.

In some embodiments, peripheral component interfaces may include, but are not limited to, non-volatile memory ports, audio jacks, and power interfaces.

In some embodiments, the sensor may include, but is not limited to, a gyroscope sensor, an accelerometer, a proximity sensor, an ambient light sensor, and a positioning unit. The positioning unit may also be part of or interact with the network interface 1420 to communicate with components of the positioning network (eg, global positioning system (GPS) satellites).

According to an embodiment of the present application, FIG. 13 shows a block diagram of a SoC (System on Chip) 1500. In Fig. 11, similar parts have the same reference numerals. In addition, the dashed box is an optional feature of the more advanced SoC. In FIG. 11, the SoC 1500 includes: an interconnection unit 1550, which is coupled to an application processor 1515; a system agent unit 1570; a bus controller unit 1580; an integrated memory controller unit 1540; a group or one or more co-processing The device 1520 may include an integrated graphics logic, image processor, audio processor, and video processor; a static random access memory (SRAM) unit 1530; and a direct memory access (DMA) unit 1560. In one embodiment, the coprocessor 1520 includes a dedicated processor, such as, for example, a network or communication processor, a compression engine, a GPGPU, a high-throughput MIC processor, or an embedded processor, etc.

The various embodiments of the mechanism disclosed in this application may be implemented in hardware, software, firmware, or a combination of these implementation methods. The embodiments of the present application can be implemented as a computer program or program code executed on a programmable system including at least one processor and a storage system (including volatile and non-volatile memory and/or storage elements) , At least one input device and at least one output device.

The program code can be applied to input the first instruction to perform the functions described in this application and generate output information. The output information can be applied to one or more output devices in a known manner. For the purposes of this application, a processing system includes any system having a processor such as, for example, a digital signal processor (DSP), a microcontroller, an application specific integrated circuit (ASIC), or a microprocessor.

The program code can be implemented in a high-level programming language or an object-oriented programming language to communicate with the processing system. When needed, assembly language or machine language can also be used to implement the program code. In fact, the mechanism described in this application is not limited to the scope of any particular programming language. In either case, the language can be a compiled language or an interpreted language.

In some cases, the disclosed embodiments may be implemented in hardware, firmware, software, or any combination thereof. The disclosed embodiments may also be implemented as first instructions carried by or stored on one or more transient or non-transitory machine-readable (for example, computer-readable) storage media, which may be executed by one or more The processor reads and executes. For example, the first instruction may be distributed through a network or through other computer-readable media. Therefore, a machine-readable medium may include any mechanism for storing or transmitting information in a form readable by a machine (for example, a computer), including, but not limited to, floppy disks, optical disks, optical disks, read-only memories (CD-ROMs), magnetic Optical disk, read only memory (ROM), random access memory (RAM), erasable programmable read only memory (EPROM), electrically erasable programmable read only memory (EEPROM), magnetic or optical card, flash memory, or A tangible machine-readable memory used to transmit information (for example, carrier waves, infrared signals, digital signals, etc.) using the Internet with electric, optical, acoustic, or other forms of propagating signals. Therefore, the machine-readable medium includes any type of machine-readable medium suitable for storing or transmitting electronic first instructions or information in a form readable by a machine (for example, a computer).

In the drawings, some structural or method features may be shown in a specific arrangement and/or order. However, it should be understood that such a specific arrangement and/or ordering may not be required. Rather, in some embodiments, these features may be arranged in a different manner and/or order than shown in the illustrative drawings. In addition, the inclusion of structural or method features in a particular figure does not imply that such features are required in all embodiments, and in some embodiments, these features may not be included or may be combined with other features.

It should be noted that each unit/module mentioned in each device embodiment of this application is a logical unit/module. Physically, a logical unit/module can be a physical unit/module or a physical unit/ A part of the module can also be realized by a combination of multiple physical units/modules. The physical realization of these logical units/modules is not the most important. The combination of the functions implemented by these logical units/modules is the solution to this application. The key to the technical question raised. In addition, in order to highlight the innovative part of this application, the above-mentioned device embodiments of this application do not introduce units/modules that are not closely related to solving the technical problems proposed by this application. This does not mean that the above-mentioned device embodiments do not exist. Other units/modules.

It should be noted that in the examples and specification of this patent, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply There is any such actual relationship or sequence between these entities or operations. Moreover, the terms "include", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes those that are not explicitly listed Other elements of, or also include elements inherent to this process, method, article or equipment. If there are no more restrictions, the element defined by the phrase "including one" does not exclude the existence of other same elements in the process, method, article, or equipment that includes the element.

In summary, the above-mentioned embodiments provided by the present invention are merely illustrative of the principles and effects of the present invention, and are not used to limit the present invention. Anyone familiar with this technology can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed in the present invention should still be covered by the claims of the present invention.

Claims

A Bluetooth communication system includes a Bluetooth headset, a first electronic device, and a second electronic device, and is characterized in that:

The Bluetooth headset is configured as:

Receive the user's first operation;

In response to the first operation, sending a BLE broadcast to the first electronic device and the second electronic device;

Receiving the first response message of the first electronic device;

Receiving a second response message of the second electronic device,

Based on the first response message and the second response message, determining that the first electronic device has priority, and sending a first instruction to the first electronic device to make the first electronic device pop up a pairing prompt box;

The first electronic device is configured to:

In response to the first instruction, the pairing prompt box containing the information of the Bluetooth headset is displayed on the first interface.
The Bluetooth communication system according to claim 1, wherein:

The first response message carries information about the first transmission power of the first electronic device;

The second response message carries information about the second transmission power of the second electronic device,

The Bluetooth headset is configured as:

Based on the first transmission power and the first RSSI of the first response message, calculate the first loss or the first distance;

Based on the second transmission power and the second RSSI of the second response message, calculate the second loss or the second distance,

Based on the first loss and the second loss, it is determined that the first electronic device has the priority, or

Based on the first distance and the second distance, it is determined that the first electronic device has the priority.
The Bluetooth communication system according to claim 2, wherein when the first transmission power of the first electronic device is the same as the second transmission power of the second electronic device, the Bluetooth headset is configured to:

Based on the first RSSI of the first response message and the second RSSI of the second response message, it is determined that the first electronic device has the priority.
The Bluetooth communication system according to any one of claims 1-3, wherein the first electronic device is configured to:

The pairing prompt box includes user options,

Receiving a second operation of the user for the user option;

In response to the second operation, the Bluetooth headset is successfully paired with the first electronic device.
The Bluetooth communication system according to any one of claims 1 to 4, wherein the information of the Bluetooth headset includes at least one of the name of the Bluetooth headset and an icon of the Bluetooth headset.
The Bluetooth communication system according to any one of claims 1-5, wherein the first instruction is sent to the first electronic device through a link or a broadcast mode.
A communication method for a Bluetooth headset is characterized in that it comprises the following steps:

Receive the user's first operation;

In response to the first operation, sending a BLE broadcast to the first electronic device and the second electronic device;

Receiving the first response message of the first electronic device;

Receiving a second response message of the second electronic device,

Based on the first response message and the second response message, it is determined that the first electronic device has priority, and a first instruction is sent to the first electronic device to cause the first electronic device to pop up a pairing prompt box.
The Bluetooth headset communication method according to claim 7, wherein the first response message carries information of the first transmission power of the first electronic device; the second response message carries the first transmission power information; 2. Information on the second transmit power of the electronic device,

Based on the first response message and the second response message, it is determined that the first electronic device has priority, and a first instruction is sent to the first electronic device to cause the first electronic device to pop up a pairing prompt box The steps include:

Calculation based on the first transmission power and the first RSSI of the first response message to obtain the first loss or the first distance;

Based on the second RSSI calculation of the second transmission power and the second response message, the second loss or the second distance is obtained,

Based on the first loss and the second loss, it is determined that the first electronic device has the priority, or

Based on the first distance and the second distance, it is determined that the first electronic device has the priority.
The communication method of a Bluetooth headset according to claim 8, wherein when the first transmission power of the first electronic device is the same as the second transmission power of the second electronic device,

Based on the first response message and the second response message, it is determined that the first electronic device has priority, and a first instruction is sent to the first electronic device to cause the first electronic device to pop up a pairing prompt box The steps include:

Based on the first RSSI of the first response message and the second RSSI of the second response message, it is determined that the first electronic device has the priority.
The communication method of a Bluetooth headset according to any one of claims 7-9, wherein the information of the Bluetooth headset includes at least one of the name of the Bluetooth headset and an icon of the Bluetooth headset.
A wireless communication system includes a mobile phone, a first screen projection device and a second screen projection device, and is characterized in that:

The mobile phone is configured as:

Receive the user's first operation;

In response to the first operation, sending a screencast broadcast to the first screencasting device and the second screencasting device;

Receiving a first response message of the first screen projection device;

Receiving a second response message of the second screen projection device,

Based on the first response message and the second response message, it is determined that the first screen projection device has priority, and a first instruction is sent to the first screen projection device to make the first screen projection device pop up a screen projection prompt frame;

The first screen projection device is configured as:

In response to the first instruction, the projection prompt box is displayed on the first interface.
The wireless communication system according to claim 11, wherein:

The first response message carries information about the first transmission power of the first screen projection device;

The second response message carries information about the second transmission power of the second screen projection device,

The mobile phone is configured as:

Based on the first transmission power and the first RSSI of the first response message, calculate the first loss or the first distance;

Based on the second transmission power and the second RSSI of the second response message, calculate the second loss or the second distance,

Based on the first loss and the second loss, it is determined that the first projection device has the priority, or

Based on the first distance and the second distance, it is determined that the first screen projection device has the priority.
The wireless communication system according to claim 12, wherein:

When the first transmission power of the first projection device is the same as the second transmission power of the second projection device, the mobile phone is configured to:

Based on the first RSSI of the first response message and the second RSSI of the second response message, it is determined that the first screen projection device has the priority.
The wireless communication system according to any one of claims 11-13, wherein the first screen projection device is configured to:

The projection prompt box includes user options,

Receiving a second operation of the user for the user option;

In response to the second operation, the mobile phone and the first screen projection device successfully cast the screen.
A mobile phone communication method is characterized in that it comprises the following steps:

Receive the user's first operation;

In response to the first operation, sending a screencast broadcast to the first screencasting device and the second screencasting device;

Receiving a first response message of the first screen projection device;

Receiving a second response message of the second screen projection device,

Based on the first response message and the second response message, it is determined that the first screen projection device has a priority, and a first instruction is sent to the first screen projection device to make the first screen projection device pop up. Screen prompt box.
The mobile phone communication method according to claim 15, wherein the first response message carries information about the first transmission power of the first screen projection device; and the second response message carries the first transmission power information of the first screen projection device; Information about the second transmit power of the second projection screen device,

Based on the first response message and the second response message, it is determined that the first screen projection device has a priority, and a first instruction is sent to the first screen projection device to make the first screen projection device pop up. The steps of the on-screen prompt box include:

Based on the first transmission power and the first RSSI of the first response message, calculate the first loss or the first distance;

Based on the second transmission power and the second RSSI of the second response message, calculate the second loss or the second distance,

Based on the first loss and the second loss, it is determined that the first projection device has the priority, or

Based on the first distance and the second distance, it is determined that the first screen projection device has the priority.
The mobile phone communication method according to claim 16, wherein when the first transmission power of the first screen projection device is the same as the second transmission power of the second screen projection device,

Based on the first response message and the second response message, it is determined that the first screen projection device has a priority, and a first instruction is sent to the first screen projection device to make the first screen projection device pop up. The steps of the on-screen prompt box include:

Based on the first RSSI of the first response message and the second RSSI of the second response message, it is determined that the first screen projection device has the priority.
A terminal, characterized by comprising: a processor, a memory, and a touch screen, the memory and the touch screen are coupled to the processor, the memory is used to store computer program codes, and the computer program codes include computer instructions, When the processor reads the computer instructions from the memory, so that the terminal executes the following steps:

Receive the user's first operation;

In response to the first operation, sending a BLE broadcast to the first electronic device and the second electronic device;

Receiving the first response message of the first electronic device;

Receiving a second response message of the second electronic device,

Based on the first response message and the second response message, it is determined that the first electronic device has priority, and a first instruction is sent to the first electronic device to cause the first electronic device to pop up a pairing prompt box.
The terminal according to claim 18, wherein:

The first response message carries information about the first transmission power of the first electronic device;

The second response message carries information about the second transmission power of the second electronic device,

Based on the first response message and the second response message, it is determined that the first electronic device has priority, and a first instruction is sent to the first electronic device to cause the first electronic device to pop up a pairing prompt box The steps include:

Calculation based on the first transmission power and the first RSSI of the first response message to obtain the first loss or the first distance;

Based on the second RSSI calculation of the second transmission power and the second response message, the second loss or the second distance is obtained,

Based on the first loss and the second loss, it is determined that the first electronic device has the priority, or

Based on the first distance and the second distance, it is determined that the first electronic device has the priority.
The terminal according to claim 19, wherein when the first transmission power of the first electronic device is the same as the second transmission power of the second electronic device,

Based on the first response message and the second response message, it is determined that the first electronic device has priority, and a first instruction is sent to the first electronic device to cause the first electronic device to pop up a pairing prompt box The steps include:

Based on the first RSSI of the first response message and the second RSSI of the second response message, it is determined that the first electronic device has the priority.
A terminal, characterized by comprising: a processor, a memory, and a touch screen, the memory and the touch screen are coupled to the processor, the memory is used to store computer program codes, and the computer program codes include computer instructions, When the processor reads the computer instructions from the memory, so that the terminal executes the following steps:

Receive the user's first operation;

In response to the first operation, sending a screencast broadcast to the first screencasting device and the second screencasting device;

Receiving a first response message of the first screen projection device;

Receiving a second response message of the second screen projection device,

Based on the first response message and the second response message, it is determined that the first screen projection device has a priority, and a first instruction is sent to the first screen projection device to make the first screen projection device pop up. Screen prompt box.
The terminal according to claim 21, wherein the first response message carries information about the first transmission power of the first screen projection device; the second response message carries the second screen projection device Information about the second transmit power of the device,

Based on the first response message and the second response message, it is determined that the first screen projection device has a priority, and a first instruction is sent to the first screen projection device to make the first screen projection device pop up. The steps of the on-screen prompt box include:

Based on the first transmission power and the first RSSI of the first response message, calculate the first loss or the first distance;

Based on the second transmission power and the second RSSI of the second response message, calculate the second loss or the second distance,

Based on the first loss and the second loss, it is determined that the first projection device has the priority, or

Based on the first distance and the second distance, it is determined that the first screen projection device has the priority.
The terminal according to claim 22, wherein when the first transmission power of the first screen projection device is the same as the second transmission power of the second screen projection device,

Based on the first response message and the second response message, it is determined that the first screen projection device has a priority, and a first instruction is sent to the first screen projection device to make the first screen projection device pop up. The steps of the on-screen prompt box include:

Based on the first RSSI of the first response message and the second RSSI of the second response message, it is determined that the first screen projection device has the priority.