CN113395685B

CN113395685B - Bluetooth communication system and wireless communication system

Info

Publication number: CN113395685B
Application number: CN202010163215.0A
Authority: CN
Inventors: 王良; 章亚; 萧维廷
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-03-10
Filing date: 2020-03-10
Publication date: 2023-07-11
Anticipated expiration: 2040-03-10
Also published as: CN113395685A; WO2021180083A1

Abstract

The invention relates to a Bluetooth communication system and a wireless communication system, wherein the Bluetooth communication system comprises a Bluetooth headset, a first electronic device and a second electronic device, and the Bluetooth headset is configured to: receiving a first operation of a user; transmitting a BLE broadcast to the first electronic device and the second electronic device in response to the first operation; receiving a first response message of the first electronic device; receiving a second response message of the second electronic device, determining that the first electronic device has priority based on the first response message and the second response message, and sending a first instruction to the first electronic device to enable the first electronic device to pop up a pairing prompt box; the first electronic device is configured to: and responding to the first instruction, and displaying a pairing prompt box containing information of the Bluetooth headset on the first interface. Therefore, the Bluetooth headset and the mobile phone can be paired quickly and without interference.

Description

Bluetooth communication system and wireless communication system

Technical Field

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

Background

With the development of wireless communication technology, more and more communication modes of electronic devices are changed from wired communication to wireless communication. For example, headphones and mobile phones, which are closely related to people's life, gradually change from the original wired communication mode to the wireless bluetooth communication mode.

In the process of pairing a bluetooth headset with a mobile phone or the like, it is generally in accordance with a standard bluetooth standard protocol, for example, a scanning paging process, for example, a terminal device receives a command from a user to turn on a bluetooth switch in a setting, and the terminal device scans surrounding proximity discovery broadcasts. When the terminal equipment scans the near discovery broadcast sent by the Bluetooth headset, the terminal equipment pops up a pairing inquiry box. After receiving a first instruction of permission of a user, the terminal equipment successfully pairs the Bluetooth headset with the mobile phone.

Disclosure of Invention

In order to make the above-mentioned objects of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.

In a first aspect, a bluetooth communication system according to some embodiments of the present application is provided, including a bluetooth headset, a first electronic device, and a second electronic device, the bluetooth headset configured to: receiving a first operation of a user; transmitting a BLE broadcast to the first electronic device and the second electronic device in response to the first operation; receiving a first response message of the first electronic device; receiving a second response message of the second electronic device, determining that the first electronic device has priority based on the first response message and the second response message, and sending a first instruction to the first electronic device to enable the first electronic device to pop up a pairing prompt box; the first electronic device is configured to: and responding to the first instruction, and displaying a pairing prompt box containing information of the Bluetooth headset on the first interface.

In some embodiments, the first response message carries information of a first transmission power of the first electronic device; the second response message carries information of a second transmission power of the second electronic device, and the Bluetooth headset is configured to: calculating to obtain a first loss or a first distance based on the first transmission power and a first RSSI of the first response message; a second loss or a second distance is calculated based on the second transmit power and a second RSSI of the second response message, the first electronic device is determined to have priority based on the first loss and the second loss, or the first electronic device is determined to have priority based on the first distance and the second distance.

In some embodiments, when the first transmit power of the first electronic device is the same as the second transmit power of the second electronic device, the bluetooth headset is configured to: the first electronic device is determined to have priority based on the first RSSI of the first response message and the second RSSI of the second response message.

In some embodiments, the first electronic device is configured to: the pairing prompt box comprises user options, and receives a second operation of the user aiming at the user options; and responding to the second operation, and successfully pairing the Bluetooth headset with the first electronic equipment.

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

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

In a second aspect, a communication method of a bluetooth headset according to some embodiments of the present application includes the following steps: receiving a first operation of a user; transmitting a BLE broadcast to the first electronic device and the second electronic device in response to the first operation; receiving a first response message of the first electronic device; and receiving a second response message of the second electronic device, determining that the first electronic device has priority based on the first response message and the second response message, and sending a first instruction to the first electronic device so as to enable the first electronic device to pop up the pairing prompt box.

In some embodiments, the first response message carries information of a first transmission power of the first electronic device; the step of determining that the first electronic device has priority based on the first response message and the second response message, and sending a first instruction to the first electronic device to cause the first electronic device to pop up the pairing prompt box includes: obtaining a first loss or a first distance based on the first transmit power and a first RSSI calculation of the first response message; a second loss or a second distance is obtained based on the second transmit power and a second RSSI calculation of the second response message, the first electronic device is determined to have priority based on the first loss and the second loss, or the first electronic device is determined to have 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, determining that the first electronic device has a priority based on the first response message and the second response message, and sending a first instruction to the first electronic device to cause the first electronic device to pop up the pairing prompt box includes: the first electronic device is determined to have 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 handset, a first screen-projecting device, and a second screen-projecting device, the handset configured to: receiving a first operation of a user; responding to the first operation, and sending a screen-throwing broadcast to the first screen-throwing device and the second screen-throwing device; receiving a first response message of the first screen throwing device; receiving a second response message of the second screen throwing device, determining that the first screen throwing device has priority based on the first response message and the second response message, and sending a first instruction to the first screen throwing device so that the first screen throwing device pops up a screen throwing prompt frame; the first screen-projecting device is configured to: and responding to the first instruction, and displaying a screen projection prompt box on the first interface.

In some embodiments, the first response message carries information of a first transmission power of the first screen-throwing device; the second response message carries information of second transmission power of the second screen throwing device, and the mobile phone is configured to: calculating to obtain a first loss or a first distance based on the first transmission power and a first RSSI of the first response message; and calculating to obtain a second loss or a second distance based on the second transmission power and a second RSSI of the second response message, determining that the first screen-throwing device has priority based on the first loss and the second loss, or determining that the first screen-throwing device has priority based on the first distance and the second distance.

In some embodiments, when the first transmit power of the first screen-projecting device is the same as the second transmit power of the second screen-projecting device, the handset is configured to: the first screen-casting device is determined to have priority based on the first RSSI of the first response message and the second RSSI of the second response message.

In some embodiments, the first screen projection device is configured to: the screen projection prompt box comprises user options, and receives second operation of the user aiming at the user options; and responding to the second operation, and successfully projecting the screen between the mobile phone and the first screen projecting device.

In a fourth aspect, a communication method of a mobile phone according to some embodiments of the present application includes the following steps: receiving a first operation of a user; responding to the first operation, and sending a screen-throwing broadcast to the first screen-throwing device and the second screen-throwing device; receiving a first response message of the first screen throwing device; and receiving a second response message of the second screen throwing device, determining that the first screen throwing device has priority based on the first response message and the second response message, and sending a first instruction to the first screen throwing device so that the first screen throwing device pops up a screen throwing prompt box.

In some embodiments, the first response message carries information of a first transmission power of the first screen-throwing device; the second response message carries information of second sending power of the second screen throwing device, the first screen throwing device is determined to have priority based on the first response message and the second response message, and a first instruction is sent to the first screen throwing device so that the first screen throwing device pops up a screen throwing prompt frame, wherein the step of sending the first instruction comprises the following steps: calculating to obtain a first loss or a first distance based on the first transmission power and a first RSSI of the first response message; and calculating to obtain a second loss or a second distance based on the second transmission power and a second RSSI of the second response message, determining that the first screen-throwing device has priority based on the first loss and the second loss, or determining that the first screen-throwing device has priority based on the first distance and the second distance.

In some embodiments, when the first transmission power of the first screen-throwing device is the same as the second transmission power of the second screen-throwing device, determining that the first screen-throwing device has a priority based on the first response message and the second response message, and sending a first instruction to the first screen-throwing device to cause the first screen-throwing device to pop up the screen-throwing prompt box includes: the first screen-casting device is determined to have priority based on the first RSSI of the first response message and the second RSSI of the second response message.

In a 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 being coupled to the processor, the memory being for storing computer program code, the computer program code comprising computer instructions that, when read from the memory by the processor, cause the terminal to perform the steps of: receiving a first operation of a user; transmitting a BLE broadcast to the first electronic device and the second electronic device in response to the first operation; receiving a first response message of the first electronic device; and receiving a second response message of the second electronic device, determining that the first electronic device has priority based on the first response message and the second response message, and sending a first instruction to the first electronic device so as to enable the first electronic device to pop up the 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 being coupled to the processor, the memory being for storing computer program code, the computer program code comprising computer instructions that, when read from the memory by the processor, cause the terminal to perform the steps of: receiving a first operation of a user; responding to the first operation, and sending a screen-throwing broadcast to the first screen-throwing device and the second screen-throwing device; receiving a first response message of the first screen throwing device; and receiving a second response message of the second screen throwing device, determining that the first screen throwing device has priority based on the first response message and the second response message, and sending a first instruction to the first screen throwing device so that the first screen throwing device pops up a screen throwing prompt box.

In some embodiments, the first response message carries information of a first transmission power of the first screen-throwing device; the second response message carries information of second sending power of the second screen throwing device, the first screen throwing device is determined to have priority based on the first response message and the second response message, and a first instruction is sent to the first screen throwing device so that the first screen throwing device pops up a screen throwing prompt frame, wherein the step of sending the first instruction comprises the following steps: calculating to obtain a first loss or a first distance based on the first transmission power and a first RSSI of the first response message; and calculating to obtain a second loss or a second distance based on the second transmitting power and a second RSSI of the second response message, determining that the screen-throwing electronic equipment has priority based on the first loss and the second loss, or determining that the first screen-throwing equipment has priority based on the first distance and the second distance.

In a seventh aspect, a method for determining a delivery service receiver device in triggering a predetermined service according to some embodiments of the present application is provided for a system including a plurality of electronic devices, including an electronic device that is a service initiator device, and at least two electronic devices that are service receiver devices, the method including the steps of: at least two service receiver devices respectively transmit service availability broadcast for a predetermined service; the service initiator device scans and receives service availability broadcast from 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 of the transmission power of the service receiver carried by the service initiator device, and determines the final service receiver device based on the priority; and the service initiator device delivers the service to the final service receiver device.

In some embodiments, the step of determining, by the service initiator device, the priority of at least two service receiver devices based on the scanned RSSI of the service availability broadcast and the information of the transmission power of the service receiver carried by the scanned RSSI, includes: the service initiator device 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 of the transmission power of the service receiver carried by the service initiator device, and determines the priority of at least two service receiver devices according to the distance.

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

In some embodiments, further comprising: and the service initiator equipment selects the service receiver equipment corresponding to the service availability broadcast with the minimum distance or loss in the priority.

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

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

In some embodiments, the step of the service initiator device calculating 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 of the transmission power of the service receiver carried by the scanned RSSI, and determining the priority of at least two service receiver devices according to the distance, includes: the service initiator device calculates the average distance or average loss between the service initiator device and each service receiver device based on the second distance or second loss corresponding to each scanned feedback broadcast and the first distance or first loss corresponding to the corresponding service-based broadcast, and determines the priority of at least two service receiver devices according to the average distance or average loss.

In some embodiments, the service-based broadcast transmitted by the service initiator device includes: near discovery broadcasts and/or screen broadcasts.

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

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

In a seventh aspect, a system of a plurality of electronic devices according to some embodiments of the present application is provided, comprising: an electronic device as a service initiator device, and at least two electronic devices as service receiver devices, wherein the service initiator device comprises: a scan receiving module for scanning and receiving service availability broadcast for a predetermined service from at least two service receiver devices; and the determining module is used for determining the priority of at least two service receiver devices based on the scanned RSSI of the service availability broadcast and the information of the transmission power of the service receiver carried by the RSSI, and determining the final service receiver device based on the priority.

Drawings

The following detailed description of the invention refers to the accompanying drawings.

Fig. 1 is a schematic diagram illustrating an application scenario of a bluetooth communication system according to some embodiments of the present application;

fig. 2 illustrates a second schematic diagram of an application scenario of a bluetooth communication system according to some embodiments of the present application;

fig. 3 illustrates a real-time view of a true wireless bluetooth headset and charging box provided in accordance with some embodiments of the present application;

fig. 4 illustrates 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 according to an embodiment of the present application;

fig. 6 is an interface schematic diagram of a mobile phone interface pop-up pairing prompt box according to an embodiment of the present application;

fig. 7 is a schematic diagram of an interface for successful pairing between a mobile phone and a bluetooth headset according to an embodiment of the present application;

fig. 8 illustrates a flowchart of pairing a bluetooth headset with a mobile phone according to some embodiments of the present application;

fig. 9 is a schematic diagram illustrating an application scenario of a wireless communication system according to some embodiments of the present application;

fig. 10 illustrates a flowchart one of a mobile phone 100 and a screen projection device 300 according to some embodiments of the present application;

Fig. 11 illustrates a second flowchart of a screen of 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 an apparatus according to an embodiment of the present application;

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

Detailed Description

It will 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 merely for distinguishing and are not to be construed as indicating or implying relative importance. For example, a first feature may be referred to as a second feature, and similarly a second feature may be referred to as a first feature, without departing from the scope of the example embodiments.

The terms "comprising," "having," and "including" are synonymous, unless the context dictates otherwise. 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" may refer to, be part of, or include: a memory (shared, dedicated, or group) for running one or more software or firmware programs, an Application Specific Integrated Circuit (ASIC), an electronic circuit and/or processor (shared, dedicated, or group), a combinational logic circuit, and/or other suitable components that provide the described functionality.

Fig. 1 is a schematic diagram illustrating an application scenario of a bluetooth communication system according to some embodiments of the present application. The bluetooth communication system includes a bluetooth headset 200 (e.g., 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 may be at least two mobile phones 100, such as 2 mobile phones 100, 3 mobile phones 100, 5

mobile phones

100, and 10 mobile phones 100. In various embodiments of the present application, the mobile Phone 100 may be a smart Phone (e.g., an Android Phone, iOS Phone, windows Phone, etc.). In other embodiments, the electronic device may also be a personal digital assistant, a handheld PC, a wearable device (e.g., a smartwatch, a smartband, etc.), a portable media player, a handheld device, a navigation device, a server, a network device, a graphics device, a video game device, a laptop device, a virtual reality and/or augmented reality device, an internet of things device, an industrial control device, a vehicle infotainment device, a streaming client device, an electronic book, a reading device, and other devices.

As shown in fig. 1, in the process of pairing the bluetooth headset 200 and the mobile phone 100, the mobile phone 100 turns on the bluetooth function, and the bluetooth headset 200 may enter the pairing mode with the mobile phone 100 through an opening action or a key operation (e.g., long press).

If the bluetooth headset 200 is not first paired with the mobile phone 100 to be paired, when the bluetooth headset 200 sends a broadcast near the found BLE through a box opening action or a key operation, the connection action with the mobile phone 100 can be automatically implemented. This is because the bluetooth headset 200 stores the bluetooth address of the previously paired mobile phone 100, and when the charging box of the bluetooth headset 200 is opened or the bluetooth function is turned on, the bluetooth headset 200 automatically connects back to the last paired mobile phone 100, thereby realizing a quick connection.

If the bluetooth headset 200 is paired with the mobile phone 100 to be paired for the first time, after the bluetooth headset 200 is executed with the box opening action or the key operation, the bluetooth headset 200 sends a near discovery BLE broadcast, after the mobile phone 100 receives the near discovery BLE broadcast from the bluetooth headset 200, the bluetooth headset 200 sends a feedback broadcast to the bluetooth headset 200, and based on the feedback broadcast, the bluetooth headset 200 sends a first instruction to the mobile phone 100, so that the mobile phone 100 pops up a pairing prompt box to inquire whether the user is paired with the bluetooth headset 200, and after the mobile phone 100 receives the pairing permission operation of the user, the bluetooth headset is paired with the mobile phone successfully.

In general, a proximity discovery broadcast transmitted from the bluetooth headset 200 is scanned and received by the handset 100, and the received signal strength indication (Received Signal Strength Indication, RSSI) size of the proximity discovery broadcast is determined by the handset 100. One criterion for determining whether to pop up the pairing prompt is that the handset 100 determines whether the RSSI of the near discovery broadcast exceeds a preset threshold. If the RSSI exceeds the preset threshold, the handset 100 pops up a pairing prompt box asking the user if paired.

As shown in fig. 2, RSSI of each of the handsets a to D exceeds a preset threshold, and each of the handsets a to D pops up a pairing prompt box. If the target user wants to pair with the target mobile phone C, the pop-up frame of the mobile phone A, B, D easily disturbs the use of the 3 mobile phones, and the user experience is poor.

According to the bluetooth communication system provided by some embodiments of the present application, as shown in fig. 1, when 4 mobile phones a to D are 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 the problem that a plurality of mobile phones 100 are triggered to pop up the pairing prompt box simultaneously in the pairing process of the mobile phone 100 and the bluetooth headset 200, disturbing a non-target user to use the mobile phone, realizing the rapid and interference-free pairing of the bluetooth headset 200 and the mobile phone 100, and improving the user experience.

Fig. 3 illustrates a real-time diagram of a real wireless bluetooth headset 200 and a charging box provided in accordance with some embodiments of the present application. The true wireless bluetooth headset 200, also called a true wireless stereo (true wireless stereo, TWS) headset, completely eliminates the wire connection approach, including two headsets (e.g., master and slave). For example, when in use, the terminal device (also called as a transmitting device, such as the mobile phone 100) is wirelessly connected with the master earphone, and then the master earphone is connected with the slave earphone in a Bluetooth wireless mode, so that the real Bluetooth left-right channel wireless separation can be realized. The left earphone and the right earphone of the TWS earphone can form a stereo system through Bluetooth, so that song listening, conversation and wearing performance are improved. In addition, either of the two headphones can also operate alone, for example, the master headphone can return to mono sound quality without the master headphone being connected to the slave headphone.

Because of the characteristic that the left and right earphones of the TWS earphone are not physically connected, the TWS earphone is generally equipped with a charging box having both charging and storage functions. The charging box can provide power for the wireless earphone and store the function, and when the wireless earphone is not powered, the Bluetooth earphone 200 is placed in the charging box, the earphone can be automatically disconnected, and the charging box charges the earphone.

The charging box is provided with a function key (not shown in the figure), and when the cover of the charging box is opened or the function key is pressed for a preset time length (for example, 2 seconds), the bluetooth headset 200 is in a pairing mode, and a BLE broadcast is sent to the mobile phone 100 with the bluetooth function turned on.

Fig. 4 illustrates 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 circuit board (flexible printed circuit, FPC) 224, a battery 225, a charging unit 226, a sensing device (not shown), and the like. The bluetooth headset 200 further includes an auxiliary sound receiving unit 227, wherein the auxiliary sound receiving unit 227 may be a microphone, for example, a microphone for picking up background sounds in a conversation scene.

The speaker unit 221 may be an electroacoustic transducer for converting an audio electrical signal into a sound signal, and the speaker unit 221 may be a moving coil unit, a moving iron unit, or a coil iron mixing unit. The speaker unit 221 may also be referred to as a horn or a speaker, and thus the moving coil unit, the moving iron unit, or the coil iron mixing unit may also be referred to as a moving coil speaker (or called an electrodynamic speaker), a moving iron speaker, or a coil iron mixing speaker, respectively.

In one implementation, the speaker unit 221 may be capable of receiving an audio signal and a control signal (such as a streaming control signal) transmitted by a terminal device, and may also transmit the received audio signal and control signal to other speaker units, for example, when the speaker unit 221 is used as a master speaker, the audio signal and control signal received from the terminal device may be transmitted to a slave speaker, so as to realize synchronous playing of audio in two separate speakers, and further realize a stereo effect.

The control unit 222 may include a motherboard (or master chip), a bluetooth chip, etc., and may be used for charge management, signal transmission, etc., and in some embodiments, the control unit 222 may also be used for active noise reduction. Alternatively, the control unit 222 may be a microprocessor.

The sound receiving unit 223, the sound receiving unit 223 includes a Microphone (MIC), a waterproof and dustproof film, and the like, which are fixed to a flexible circuit board (flexible printed circuit, FPC) 224.

The positive pole and the negative pole of the battery 225 are respectively electrically connected with the flexible circuit board 224, and the charging of the battery 225 and the power supply of the battery 225 to the Bluetooth headset 200 can be realized through a circuit in the flexible circuit board 224. Wherein, the cavity formed by the earphone handle can be provided with an antenna for receiving and transmitting signals.

The charging unit 226 is used for charging the battery 225, one end of the charging unit is connected with the flexible circuit board 224, and the other end of the charging unit can be contacted with a metal contact in the charging box outside the earphone to form a charging loop. When the battery 225 is charged, the charging contact of the earphone is in contact with the contact in the charging box to form an electrical connection, and the charging current can flow from the positive charging contact to the positive electrode of the battery 225, from the negative electrode of the battery 225 to the negative charging contact through the circuit on the flexible circuit board 224, and finally returns to the charging box.

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

In some embodiments, the bluetooth headset 200 further includes an auxiliary sound receiving unit 227, where the auxiliary sound receiving unit 227 may be another microphone, so as to form a dual microphone with the sound receiving unit 223, where the sound receiving unit 223 may be a microphone used by a normal user for collecting human voice (i.e. for picking up voice of a call), and the auxiliary sound receiving unit 227 may be a microphone for picking up background sound, and has a background noise collecting function for collecting ambient noise. The auxiliary sound receiving unit 227 is remote from the sound receiving unit 223. The design of adopting two microphones can effectively resist the ambient noise interference around the earphone, greatly improves the definition of normal conversation.

Fig. 5 shows a schematic diagram of a mobile phone 100 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 (universal serial bus, USB) interface 130, a charge management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2, a mobile communication module 150, a wireless communication module 160, an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, a sensor module 180, keys 190, a motor 191, an indicator 192, a camera 193, a display 194, a subscriber identity module (subscriber identification module, SIM) card interface 195, and the like.

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

It should be understood that the illustrated structure of the embodiment of the present invention does not constitute a specific limitation on the electronic device 100. In other embodiments of the present application, electronic device 100 may include more or fewer components than shown, or certain components may be combined, or certain components may be split, or different arrangements of components. The illustrated components may 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 interfaces 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, a universal asynchronous receiver transmitter (universal asynchronous receiver/transmitter, UART) interface, a mobile industry processor interface (mobile industry processor interface, MIPI), a general-purpose input/output (GPIO) interface, and/or a subscriber identity module (subscriber identity module, SIM) interface.

The I2S interface may be used for audio communication. In some embodiments, the processor 110 may contain multiple sets of I2S buses. The processor 110 may be coupled to the audio module 170 via an I2S bus to enable communication between the processor 110 and the audio module 170. In some embodiments, the audio module 170 may transmit an audio signal to the wireless communication module 160 through the I2S interface, to implement a function of answering a call through the bluetooth headset.

PCM interfaces may 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 to implement a function of answering a call through the bluetooth headset. Both the I2S interface and the PCM interface may be used for audio communication.

The UART interface is a universal serial data bus for asynchronous communications. The bus may be a bi-directional communication bus. It converts the data to be transmitted between serial communication and parallel communication. In some embodiments, a UART interface is typically used to connect the processor 110 with the wireless communication module 160. For example: the processor 110 communicates with a bluetooth module in the wireless communication module 160 through a UART interface to implement a bluetooth function. In some embodiments, the audio module 170 may transmit an audio signal to the wireless communication module 160 through a UART interface, to implement a function of playing music through a bluetooth headset.

It should be understood that the interfacing relationship between the modules illustrated in the embodiments of the present invention is only illustrative, and is not meant to limit the structure of the electronic device 100. In other embodiments of the present application, the electronic device 100 may also use different interfacing manners, or a combination of multiple interfacing manners in the foregoing embodiments.

The wireless communication module 160 may provide solutions for wireless communication including wireless local area network (wireless local area networks, WLAN) (e.g., wireless fidelity (wireless fidelity, wi-Fi) network), bluetooth (BT), global navigation satellite system (global navigation satellite system, GNSS), frequency modulation (frequency modulation, FM), near field wireless communication technology (near field communication, NFC), infrared technology (IR), etc., as applied to the electronic device 100. The wireless communication module 160 may be one or more devices that integrate at least one communication processing module. The wireless communication module 160 receives electromagnetic waves via the antenna 2, modulates the electromagnetic wave signals, filters the electromagnetic wave signals, and transmits the processed signals to the processor 110. The wireless communication module 160 may also receive a signal to be transmitted from the processor 110, frequency modulate it, amplify it, and convert it to electromagnetic waves for radiation via the antenna 2.

A bluetooth communication system according to an embodiment of the present application is described below with reference to fig. 1 in conjunction with fig. 6.

After the setup interface of the mobile phone 100 receives the operation of turning on the bluetooth function by the user, the bluetooth pairing function of the mobile phone 100 is activated, for example, the bluetooth identifier 10 is displayed on the upper right corner of the mobile phone interface as shown in fig. 6, and the bluetooth module of the mobile phone 100 is in the background scanning state. When the bluetooth module 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 a bright state.

When the charging box in which the bluetooth headset 200 is placed is turned on (this state is shown in fig. 3), or a function key located on the charging box is pressed for a preset time length (for example, 2 seconds), a charging box indicator lamp (for example, a blue lamp) blinks, at this time, the bluetooth headset 200 enters a pairing state and transmits a near discovery BLE broadcast, in which information such as a MAC address of the bluetooth headset 200, an identifier of a headset manufacturer, a transmission power, and the like is carried.

As shown in fig. 1, when 4 handsets a to D located near the bluetooth headset 200 respectively scan and receive a proximity discovery BLE broadcast from the bluetooth headset 200, the handsets a to D respectively transmit feedback broadcasts to the bluetooth headset 200 immediately. The feedback broadcast carries information corresponding to the transmit power, signal strength, MAC address, handset vendor identification, etc. of each handset 100.

The bluetooth headset 200 receives the feedback broadcasts from the handsets a through D, and calculates and obtains the loss or distance based on the RSSI of the feedback broadcast and the information carried by the RSSI and corresponding to the transmitting power of each handset. Further, based on the loss or the distance, the bluetooth headset 200 determines that the mobile phone with the highest priority, for example, the mobile phone C, has the highest priority, and then, as shown in fig. 6, the bluetooth headset 200 sends a first instruction to the mobile phone C, so that the mobile phone C displays the pairing prompt box 20 containing the information of the bluetooth headset 200. In some embodiments, the first instruction may be a private bluetooth command, and after receiving the instruction, 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 a name of the bluetooth headset 200 and an icon of the bluetooth headset 200. That is, the pairing prompt box 20 may display the name of the bluetooth headset 200, for example, as shown in fig. 6, where the name of the bluetooth headset 200 is the initial name "HUAWEI FreeBuds3", and the name of the bluetooth headset 200 may also be a user-defined name, for example, "Zhang San's FreeBuds3", so that the user can quickly identify whether the bluetooth headset 200 is to be paired.

The pairing prompt box 20 may also display an icon of the bluetooth headset 200, which may be a physical diagram of the bluetooth headset 200, so that a user can quickly and accurately identify whether the bluetooth headset 200 is to be paired. For example, if the bluetooth headset 200 is white, the pairing prompt box 20 can display an icon of the bluetooth headset 200 that is white and completely identical to its appearance; if the bluetooth headset 200 is red, the pairing prompt box 20 can display an icon of the bluetooth headset 200 that is red and completely identical to its appearance. Further, the user can quickly and accurately identify whether the bluetooth headset 200 is the bluetooth headset 200 to be paired with, for example, as shown in fig. 6, the option operation of "agree 21" or "ignore 22" is performed in the pairing prompt box 20.

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 a user can more quickly and accurately identify whether the bluetooth headset 200 is to be paired.

The pairing prompt box 20 can also display the electric quantity of the left earphone (L), the right earphone (R) and the charging box respectively, so that the user can clearly know the electric quantity conditions of the two earphones and the charging box, and charge the two earphones in time.

As shown in fig. 6, if the user clicks the "agree 21" option on the interface of the pairing prompt box 20 popped up by the mobile phone C, the bluetooth headset 200 establishes a connection with the mobile phone 100 according to the bluetooth protocol, and the mobile phone C successfully pairs with the bluetooth headset 200. As shown in fig. 7, the upper right hand corner of the cell phone C interface displays the earpiece symbol 30. The handset C will enter the next interface. The user can perform operations such as shortcut operations, active noise reduction and the like 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, the pairing between the mobile phone C and the bluetooth headset 200 is unsuccessful.

In some embodiments, the pairing prompt box 20 of the mobile phone 100 may pop up when the mobile phone C is in a locked or bright state. When the mobile phone 100 is in the lock screen state, the user can perform an option operation such as "agree 21" or "ignore 22" on it through the popped pairing prompt box 20. After the user clicks the "agree" option, if the mobile phone 100 is not provided with a password, the mobile phone 100 can be automatically unlocked, so that the mobile phone 100 is in a bright screen state, and the user can conveniently perform operations such as listening to songs or playing television shows; if the mobile phone is provided with a password, the mobile phone 100 requires the user to perform an unlocking operation to ensure the privacy security 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 the bright screen state, so that the bluetooth headset 200 is prevented from causing the mobile phone 100 to pop up the pairing prompt box 20 under misoperation, and unnecessary operations of the user are increased.

In some embodiments, the pairing prompt box 20 of the mobile phone 100 may pop up during the process of performing a service, for example, the user already plays a video on the mobile phone 100, then the user wants to wear the bluetooth headset 200 to watch the rest of the video, the user may switch the video sound from the power amplifier to the bluetooth headset 200 by opening the charging box of the bluetooth headset 200 or pressing a function key on the charging box for a long time (for example, 2 seconds), as shown in fig. 1, the bluetooth headset 200 notifies the target mobile phone C to pop up the pairing prompt box 20 according to the priority, and the user may set up with the bluetooth headset 200 through the operation options as shown in fig. 6.

In other embodiments, the pairing prompt 20 of the mobile phone 100 may not pop up during a business such as watching video or playing a game to disturb the use of the mobile phone by the target user.

In still other embodiments, the pairing prompt box 20 of the mobile phone 100 may be set by the user on the mobile phone, so that the user may pop up when performing some services, such as watching video, and not pop up when performing other services, such as watching an electronic book, playing a game, etc. inconvenient to disturb.

In other embodiments, after determining the priority of the mobile phone 100, for example, the priority ranking is C, A, B, D, since the bluetooth headset 200 has no display device, the priority list may be sent to any mobile phone, for example, to the mobile phone C, the priority list may be displayed on the mobile phone C, based on a user selection operation for the list, for example, selecting the mobile phone a in the list, the bluetooth headset sends a box flicking instruction to the mobile phone a after receiving the instruction, so that the mobile phone a displays the pairing prompt box 20, receives the pairing operation for the mobile phone a, and the mobile phone a establishes a connection with the bluetooth headset 200. Instead of directly sending a popup instruction to the mobile phone with the highest priority after determining the priority of the mobile phone 100, the popup instruction pops up the pairing prompt box 20, thereby increasing the operability of the user.

In some embodiments, the mobile phone C may automatically close or hide the prompt box within a predetermined time, for example, 5s, when no input operation is received by the user.

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

Fig. 8 illustrates a flowchart of pairing a bluetooth headset 200 with a handset C according to some embodiments of the present application. The mobile phones a to D have turned on the bluetooth background scanning function. The user causes the bluetooth headset 200 to enter a pairing mode by triggering an action. The triggering action may be by opening the charging box of the bluetooth headset 200, or by pressing a function key located on the charging box for a long time (e.g., 2 seconds).

The bluetooth headset 200 transmits and scans a proximity discovery BLE broadcast carrying information such as the transmit power, MAC address, headset vendor identifier, etc. of the bluetooth headset 200.

When the mobile phones a to D scan and receive the proximity discovery broadcast from the bluetooth headset 200, feedback broadcasts a to D are immediately transmitted to the bluetooth headset 200, respectively. The feedback broadcast carries information corresponding to the transmission power of each cell phone, etc. That is, the feedback broadcast a carries information such as the transmitting power of the mobile phone a, the feedback broadcast B carries information such as the transmitting power of the mobile phone B, the feedback broadcast C carries information such as the transmitting power of the mobile phone C, and the feedback broadcast D carries information such as the transmitting power of the mobile phone D.

The bluetooth headset 200 can measure the RSSI of the feedback broadcast. The bluetooth headset 200 calculates and obtains a corresponding loss or distance based on the RSSI of the feedback broadcast and the information carried by the RSSI and corresponding to the transmission power of each handset. That is, the bluetooth headset 200 calculates the acquisition loss a or the distance a based on the RSSI of the feedback broadcast a and the transmission power of the mobile phone a carried by the feedback broadcast a, the bluetooth headset 200 calculates the acquisition loss B or the distance B based on the RSSI of the feedback broadcast B and the transmission power of the mobile phone B carried by the feedback broadcast B, the bluetooth headset 200 calculates the acquisition loss C or the distance C based on the RSSI of the feedback broadcast C and the transmission power of the mobile phone C carried by the feedback broadcast C, and the bluetooth headset 200 calculates the acquisition loss D or the distance D based on the RSSI of the feedback broadcast D and the transmission power of the mobile phone D carried by the feedback broadcast D.

Further, the bluetooth headset 200 determines, based on the losses a to D or the distances a to D, that 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 a first instruction 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 4 handsets a through D based on the loss. The smaller the loss, the higher the priority. The specific calculation is as follows:

loss calculation for mobile phone 100 to send feedback broadcast to bluetooth headset 200

Loss = transmit power of handset 100-RSSI of feedback broadcast received by bluetooth headset 200 from the handset. This loss calculation is done at the receiving end, i.e. the bluetooth headset 200.

That is, when the transmission power of each of the handsets a to D is identical, the magnitude of the loss between the bluetooth headset 200 and the handset 100 can be determined directly by the RSSI magnitude of the feedback broadcast received by the bluetooth headset 200, that is, the larger the RSSI, the smaller the representative loss, and the higher the priority.

In other embodiments, the feedback broadcast may also carry information of a first loss 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:

Bluetooth earThe machine 200 transmits loss calculation near discovery broadcast to the mobile phone 100

First loss = transmit power of bluetooth headset 200-RSSI of near discovery broadcast received by handset 100 from bluetooth headset 200, this loss calculation is done at the receiving end, i.e. handset 100.

After the mobile phone 100 calculates the first loss, the mobile phone 100 can fill the first loss into the field of the feedback broadcast when the feedback broadcast is sent 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 handset 100 carried by the feedback broadcast. The specific calculation is as follows:

Second loss = transmit power of handset 100-RSSI of bluetooth headset 200 receiving feedback broadcast from handset

After the bluetooth headset 200 obtains the first loss and the second loss, the two losses are averaged to obtain a final loss average value, and the priorities of the mobile phones a to D are determined according to the loss average value, so that the accuracy of loss calculation can be improved, and the accuracy of determining the priorities of the mobile phones can be improved.

In other embodiments, the bluetooth headset 200 may determine the priority of the 4 handsets a through D based on 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 as an example the wireless communication distance at the time of free space propagation.

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

As can be seen from the above formula, 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 calculation method of the loss, the loss is obtained first, and then the distance is calculated according to the relation between the loss and the distance, which is not described herein.

After the bluetooth headset 200 determines the priorities of the mobile phones a to D, a first instruction of the popup frame is sent to the mobile phone C with the highest priority, the mobile phone C pops up the pairing prompt frame 20, and after the pairing request is permitted by the user, the bluetooth headset is successfully paired.

The bluetooth headset 200 may send the first instruction of the popup frame to the mobile phone C in a broadcast manner or a link manner.

And delivering the service in a broadcasting mode. The bluetooth headset 200 broadcasts a payload carrying a mobile phone identifier such as a MAC address or ID information thereof, and after receiving the broadcast, the mobile phone C with the highest priority parses the identifier and matches with the own identification information. If so, the service is received. If not, the service is not received.

And delivering the service in a link mode. The bluetooth headset 200 is paired with the handset 100, and the bluetooth headset 200 informs the handset to establish 100 pairing service through dedicated signaling.

Fig. 9 is a schematic diagram illustrating an application scenario of a wireless communication system according to some embodiments of the present application. The wireless communication system includes a screen-casting device 300 and an electronic device such as a cell phone 100.

As shown in fig. 9, the screen apparatus 300 may be 2 flat panels and 2 televisions. In other embodiments, the screen projection devices 300 may be tablet computers, or at least 2 screen projection devices 300 such as televisions. In various embodiments of the present application, the mobile Phone 100 may be a smart Phone (e.g., an Android Phone, iOS Phone, windows Phone, etc.). In other embodiments, the electronic device may also be a personal digital assistant, a handheld PC, a wearable device (e.g., a smartwatch, a smartband, etc.), a portable media player, a handheld device, a navigation device, a network device, a graphics device, a video game device, a virtual reality and/or augmented reality device, a vehicle infotainment device, a streaming media client device, an electronic book, a reading device, and other devices.

As shown in fig. 9, in the process of the mobile phone 100 and the screen projection device 300 to project a screen, the screen projection device 300 starts a background wireless scanning function, and the mobile phone 100 can trigger a screen projection service through specific operations such as a menu or a gesture of the mobile phone.

After the mobile phone 100 is operated by a key or gesture, the mobile phone 100 transmits a screen-casting broadcast. The screen throwing device 300 immediately sends a feedback broadcast to the mobile phone 100 after receiving the screen throwing broadcast from the mobile phone 100, and the mobile phone 100 pops up a screen throwing prompt box according to the feedback broadcast by the first instruction screen throwing device 300 to inquire whether a user performs screen throwing with the screen throwing device 300, and after authentication of the screen throwing device 300, the screen throwing device 300 and the mobile phone 100 are successful.

Typically, after the screen-casting device 300 scans and receives the screen-casting broadcast transmitted from the mobile phone 100, the screen-casting device 300 immediately transmits a feedback broadcast to the mobile phone 100, and after the mobile phone receives the feedback broadcast from the screen-casting device 300, the entire list of the screen-casting devices 300 for the user to select is displayed on the interface. Because the lists are unordered, the user needs to identify the name of the screen-throwing device 300 to be thrown in all the lists, so as to click on the name of the screen-throwing device 300 to throw the screen-throwing business. Since the list of the screen-casting devices 300 is unordered, the difficulty of the user to recognize the devices increases. For example, if the user has two millet televisions, two screen-throwing devices 300 with the same name are displayed on the list, so that the user is difficult to recognize, and the user experience is poor.

According to the wireless communication system provided by some embodiments of the present application, as shown in fig. 9, when 4 screen-throwing devices 300 (flat panel a, flat panel B, television C and television D) are near the mobile phone 100, only the television C with the highest priority is triggered to pop up the screen-throwing prompt frame, thereby solving the problem that the target screen-throwing device 300 is difficult to identify in the screen-throwing process of the screen-throwing device 300 and the mobile phone 100, realizing the quick and interference-free screen-throwing of the mobile phone 100 and the screen-throwing device 300, and improving the user experience.

Fig. 10 illustrates a flowchart one of a mobile phone 100 and a screen projection device 300 according to some embodiments of the present application.

It is determined that the handset 100 is in the same wireless network state as the tablet A, B and the television C, D. When the mobile phone 100 receives a specific operation triggering the screen-throwing service through a menu or a gesture from a user, the screen-throwing broadcast is sent and scanned. The screen-cast broadcast carries information corresponding to the transmission power of the mobile phone 100, etc.

Tablet A, B and television C, D have turned on background scanning. The tablet A, B and television C, D immediately transmit a feedback broadcast to the handset 100 after scanning and receiving a screen broadcast from the handset 100. The feedback broadcast carries information corresponding to the transmission power of each screen-throwing device, etc. That is, the feedback broadcast a carries information such as the transmission power of the tablet a; the feedback broadcast B carries information such as the transmitting power of the panel B; the feedback broadcast C carries information such as the transmitting power of the television C; the feedback broadcast D carries information such as the transmission power of the television D.

The handset 100 scans and receives feedback broadcasts from the tablet A, B and television C, D, respectively. The handset 100 can measure the RSSI of the feedback broadcast corresponding to the tablet A, B and television C, D.

The mobile phone 100 calculates and obtains the corresponding loss or distance based on the RSSI of the feedback broadcast and the information carried by the RSSI and corresponding to the transmission power of each screen throwing device 300. That is, the mobile phone 100 calculates the acquisition loss a or the distance a based on the RSSI of the feedback broadcast a and the transmission power of the flat panel a carried by the feedback broadcast a, the mobile phone 100 calculates the acquisition loss B or the distance B based on the RSSI of the feedback broadcast B and the transmission power of the flat panel B carried by the feedback broadcast B, the mobile phone 100 calculates the acquisition loss C or the distance C based on the RSSI of the feedback broadcast C and the transmission power of the television C carried by the feedback broadcast C, and the mobile phone 100 calculates the acquisition loss D or the distance D based on the RSSI of the feedback broadcast D and the transmission power of the television D carried by the feedback broadcast D.

Further, the bluetooth headset 200 determines, based on the losses a to D or the distances a to D, that a screen-casting device with the highest priority among the screen-casting devices a to D, for example, the television C has the highest priority, and sends a first instruction to the television C to pop up the screen-casting prompt box.

For specific loss and distance calculations, reference is made to the description of the bluetooth communication system described above.

When the television C pops up the screen projection prompt box, the screen projection request is approved by the user, and the mobile phone 100 and the screen projection device 300 are successful in screen projection.

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

And delivering the service in a broadcasting mode. The mobile phone 100 broadcasts a payload carrying a mobile phone identifier such as a MAC address or ID information thereof, and after receiving the broadcast, the tv C with the highest priority parses the identifier and matches with the own identification information. If so, the service is received. If not, the service is not received.

And delivering the service in a link mode. The mobile phone 100 and the screen throwing device 300 throw the screen, and the mobile phone 100 informs the screen throwing device 300 to establish the screen throwing service through special signaling.

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

Therefore, the mobile phone 100 can automatically select the target screen projection device C from the plurality of screen projection devices 300 according to the priority, and the user experience is good. Or, the mobile phone 100 may provide the user with a priority list of the screen projection devices 300 based on the distance, so that the user can more intuitively judge each screen projection device 300, and even if the list includes two screen projection devices with the same name, the user can quickly identify the target screen projection device 300.

Fig. 11 illustrates a second flowchart of the mobile phone 100 and the screen-projection device 300 according to some embodiments of the present application.

The handset has turned on the wireless background scan. The screening device 300 is in a position to transmit a broadcast when it is allowed to receive traffic. Allowing a service to be received may be understood as that the screen projection device 300 is in a state of being projected, and is not in a state of playing a video or playing a game, etc.

The broadcast carries information corresponding to the transmission power of each screen-throwing device, etc. That is, the feedback broadcast a carries information such as the transmission power of the tablet a; the feedback broadcast B carries information such as the transmitting power of the panel B; the feedback broadcast C carries information such as the transmitting power of the television C; the feedback broadcast D carries information such as the transmission power of the television D.

The mobile phone 100 scans and receives the broadcast from each of the screen projection devices 300 (the tablet A, B and the television C, D), the mobile phone 100 can measure the RSSI of the feedback broadcast corresponding to the tablet A, B and the television C, D, and the mobile phone 100 calculates and obtains the corresponding loss or distance based on the RSSI of the broadcast and the information carried by the RSSI and corresponding to the transmission power of each screen projection device. That is, the mobile phone 100 calculates the acquisition loss a or the distance a based on the RSSI of the broadcast a and the transmission power of the flat panel a carried by the broadcast a, the mobile phone 100 calculates the acquisition loss B or the distance B based on the RSSI of the broadcast B and the transmission power of the flat panel B carried by the broadcast B, the mobile phone 100 calculates the acquisition loss C or the distance C based on the RSSI of the broadcast C and the transmission power of the television C carried by the broadcast C, and the mobile phone 100 calculates the acquisition loss D or the distance D based on the RSSI of the broadcast D and the transmission power of the television D carried by the broadcast D.

In other embodiments, the mobile phone 10 may also provide the user with a priority list of the screen-casting devices 300 according to the distance, and the user determines that the screen-casting action occurs in the final screen-casting device 300.

In addition to the pairing process of the bluetooth headset 200 and the mobile phone 100 and the screen-projection process of the mobile phone 100 and the screen-projection device 300, the present application may also be applicable to the situations such as file transmission between electronic devices.

Referring to fig. 12, a block diagram of a system 1400 according to one embodiment of the present application is shown. FIG. 12 illustrates an example system 1400 in accordance with various embodiments. In one embodiment, the system 1400 may include one or more processors 1404, system control logic 1408 coupled to at least one of the processors 1404, a system memory 1412 coupled to the system control logic 1408, a non-volatile memory (NVM) 1416 coupled to the system control logic 1408, and a network interface 1420 coupled to 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 general-purpose processors and special-purpose processors (e.g., graphics processors, application processors, baseband processors, etc.). In embodiments where system 1400 employs an eNB (enhanced Node B) 101 or a RAN (Radio Access Network ) controller 102, processor 1404 may be configured to perform various conforming embodiments, e.g., one or more of the multiple embodiments shown in fig. 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 for loading and storing data and/or first instructions. The memory 1412 of the system 1400 may include any suitable volatile memory, such as suitable Dynamic Random Access Memory (DRAM), in some embodiments.

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, NVM/memory 1416 may include any suitable nonvolatile memory such as flash memory and/or any suitable nonvolatile storage device, such as at least one of a HDD (Hard Disk Drive), a CD (Compact Disc) Drive, a DVD (Digital Versatile Disc ) Drive.

The NVM/memory 1416 may include a portion of the storage resources on the device mounting the system 1400 or it may be accessed by, but not necessarily part of, the apparatus. For example, NVM/storage 1416 may be accessed over a network via network interface 1420.

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

Network interface 1420 may include a transceiver to provide a radio interface for system 1400 to communicate over one or more networks to any other suitable devices (e.g., front end modules, antennas, etc.). 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/storage 1416, and a firmware device (not shown) having first instructions which, when executed by at least one of the processor 1404, the system 1400 implements the methods as shown in fig. 5, 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, 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 together with logic for one or more controllers of 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 on the same die with logic for one or more controllers of the system control logic 1408 to form a system on chip (SoC).

The system 1400 may further include: input/output (I/O) devices 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 peripheral components to also interact with the system 1400. In some embodiments, system 1400 further includes a sensor for determining at least one of environmental conditions and location information associated with system 1400.

In some embodiments, the user interface may include, but is not limited to, a display (e.g., a liquid crystal display, a touch screen display, etc.), a speaker, a microphone, one or more cameras (e.g., still image cameras and/or video cameras), a flashlight (e.g., light emitting diode flash), and a keyboard.

In some embodiments, the peripheral component interface may include, but is not limited to, a non-volatile memory port, an audio jack, and a power interface.

In some embodiments, the sensors may include, but are not limited to, gyroscopic sensors, accelerometers, proximity sensors, ambient light sensors, and positioning units. The positioning unit may also be part of the network interface 1420 or interact with the network interface 1420 to communicate with components of a positioning network, such as Global Positioning System (GPS) satellites.

Fig. 13 shows a block diagram of a SoC (System on Chip) 1500, according to an embodiment of the present application. In fig. 11, similar parts have the same reference numerals. In addition, the dashed box is an optional feature of a more advanced SoC. In fig. 11, soC 1500 includes: an interconnect unit 1550 coupled to the application processor 1515; a system agent unit 1570; a bus controller unit 1580; an integrated memory controller unit 1540; a set or one or more coprocessors 1520 which may include integrated graphics logic, an image processor, an audio processor, and a video processor; a Static Random Access Memory (SRAM) unit 1530; a Direct Memory Access (DMA) unit 1560. In one embodiment, coprocessor 1520 includes a special-purpose processor, such as, for example, a network or communication processor, compression engine, GPGPU, a high-throughput MIC processor, embedded processor, or the like.

Embodiments of the mechanisms disclosed herein may be implemented in hardware, software, firmware, or a combination of these implementations. Embodiments of the present application may be implemented as a computer program or program code that is executed on a programmable system including at least one processor, a storage system (including volatile and non-volatile memory and/or storage elements), at least one input device, and at least one output device.

Program code may be applied to input first instructions to perform the functions described herein and generate output information. The output information may be applied to one or more output devices in a known manner. For purposes of this application, a processing system includes any system having a processor such as, for example, a Digital Signal Processor (DSP), microcontroller, application Specific Integrated Circuit (ASIC), or microprocessor.

The program code may be implemented in a high level procedural or object oriented programming language to communicate with a processing system. Program code may also be implemented in assembly or machine language, if desired. Indeed, the mechanisms described in the present application are not limited in scope to any particular programming language. In either case, the language may be a compiled or 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 transitory or non-transitory machine-readable (e.g., computer-readable) storage media, which may be read and executed by one or more processors. For example, the first instructions may be distributed over a network or through other computer readable media. Thus, a machine-readable medium may include any mechanism for storing or transmitting information in a form readable by a machine (e.g., a computer), including but not limited to floppy diskettes, optical disks, read-only memories (CD-ROMs), magneto-optical disks, read-only memories (ROMs), random Access Memories (RAMs), erasable programmable read-only memories (EPROMs), electrically erasable programmable read-only memories (EEPROMs), magnetic or optical cards, flash memory, or tangible machine-readable memory for transmitting information (e.g., carrier waves, infrared signal digital signals, etc.) in an electrical, optical, acoustical or other form of propagated signal using the internet. Thus, a 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 (e.g., a computer).

In the drawings, some structural or methodological features may be shown in a particular arrangement and/or order. However, it should be understood that such a particular 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 figures. Additionally, the inclusion of structural or methodological features in a particular figure is not meant to imply that such features are required in all embodiments, and in some embodiments, may not be included or may be combined with other features.

It should be noted that, in the embodiments of the present application, each unit/module is a logic unit/module, and in physical aspect, one logic unit/module may be one physical unit/module, or may be a part of one physical unit/module, or may be implemented by a combination of multiple physical units/modules, where the physical implementation manner of the logic unit/module itself is not the most important, and the combination of functions implemented by the logic unit/module is the key to solve the technical problem posed by the present application. Furthermore, to highlight the innovative part of the present application, the above-described device embodiments of the present application do not introduce units/modules that are less closely related to solving the technical problems presented by the present application, which does not indicate that the above-described device embodiments do not have other units/modules.

It should be noted that in the examples and descriptions of this patent, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

In summary, the above embodiments are provided to illustrate the principles of the present invention and its efficacy, but not to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims

1. A Bluetooth communication system comprises a Bluetooth earphone, a first electronic device and a second electronic device, and is characterized in that,

the bluetooth headset is configured to:

receiving a first operation of a user;

transmitting a BLE broadcast to the first electronic device and the second electronic device in response to the first operation;

receiving a 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 priority of the first electronic device is greater than that of the second electronic device, and sending a first instruction to the first electronic device so as to enable the first electronic device to pop up a pairing prompt box;

the first electronic device is configured to:

and responding to the first instruction, and displaying the pairing prompt box containing the information of the Bluetooth headset on a first interface.

2. The Bluetooth communication system of claim 1, wherein the plurality of Bluetooth communication devices,

the first response message carries information of first transmission power of the first electronic equipment;

the second response message carries information of a second transmit power of the second electronic device,

The bluetooth headset is configured to:

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

calculating a second loss or a second distance based on the second transmit power and a second RSSI of the second response message,

determining, based on the first loss and the second loss, that the first electronic device has a priority greater than the second electronic device, or

Based on the first distance and the second distance, it is determined that the priority of the first electronic device is greater than the priority of the second electronic device.

3. The bluetooth communication system according to claim 2, wherein when the first transmit power of the first electronic device is the same as the second transmit power of the second electronic device, the bluetooth headset is configured to:

determining that the priority of the first electronic device is greater than the priority of the second electronic device based on the first RSSI of the first response message and the second RSSI of the second response message.

4. The bluetooth communication system according to any of claims 1-3, wherein the first electronic device is configured to:

The pairing prompt box includes a user option,

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

and responding to the second operation, and successfully pairing the Bluetooth headset with the first electronic equipment.

5. A bluetooth communication system according to any of claims 1-3, wherein the information of the bluetooth headset comprises at least one of a name of the bluetooth headset and an icon of the bluetooth headset.

6. A bluetooth communication system according to any of claims 1-3, wherein the first instruction is sent to the first electronic device by means of a link or broadcast.

7. A communication method of a bluetooth headset, comprising the steps of:

the Bluetooth headset receives a first operation of a user;

the Bluetooth headset responds to the first operation and sends BLE broadcasting to the first electronic equipment and the second electronic equipment;

the Bluetooth headset receives a first response message of the first electronic device;

the bluetooth headset receives a second response message of the second electronic device,

and the Bluetooth headset determines that the priority of the first electronic equipment is greater than that of the second electronic equipment based on the first response message and the second response message, and sends a first instruction to the first electronic equipment so that the first electronic equipment pops up a pairing prompt box.

8. The communication method of the bluetooth headset according to claim 7, wherein the first response message carries information of a first transmission power of the first electronic device; the second response message carries information of a second transmit power of the second electronic device,

the step of determining that the priority of the first electronic device is greater than the priority of the second electronic device based on the first response message and the second response message, and sending a first instruction to the first electronic device so that the first electronic device pops up a pairing prompt box includes:

the Bluetooth headset obtains a first loss or a first distance based on the first transmission power and a first RSSI calculation of the first response message;

the bluetooth headset obtains a second loss or a second distance based on the second transmit power and a second RSSI calculation of the second response message,

the Bluetooth headset determines, based on the first loss and the second loss, that the priority of the first electronic device is greater than the priority of the second electronic device, or

9. The method for communication of a Bluetooth headset as claimed in 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,

the Bluetooth headset determines that the priority of the first electronic device is greater than the priority of the second electronic device based on the first RSSI of the first response message and the second RSSI of the second response message.

10. The communication method of a bluetooth headset according to any one of claims 7-9, wherein the information of the bluetooth headset comprises at least one of a name of the bluetooth headset and an icon of the bluetooth headset.

11. A terminal, comprising: a processor, a memory, and a touch screen, the memory, the touch screen being coupled to the processor, the memory for storing computer program code, the computer program code comprising computer instructions that, when read from the memory by the processor, cause the terminal to perform the steps of:

Receiving a first operation of a user;

receiving a first response message of the first electronic device;

receiving a second response message of the second electronic device,

and based on the first response message and the second response message, determining that the priority of the first electronic device is greater than that of the second electronic device, and sending a first instruction to the first electronic device so as to enable the first electronic device to pop up a pairing prompt box.

12. The terminal of claim 11, wherein the terminal comprises a base station,

based on the first response message and the second response message, determining that the priority of the first electronic device is greater than the priority of the second electronic device, and sending a first instruction to the first electronic device to enable the first electronic device to pop up a pairing prompt box includes:

obtaining a first loss or a first distance based on the first transmit power and a first RSSI calculation of the first response message;

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

determining, based on the first and second losses, that the first electronic device has a priority that is greater than a priority of the second electronic device, or

And determining that the priority of the first electronic device is greater than the priority of the second electronic device based on the first distance and the second distance.

13. The terminal of claim 12, wherein when the first transmit power of the first electronic device is the same as the second transmit power of the second electronic device,