WO2020124611A1

WO2020124611A1 - Rate control method and device

Info

Publication number: WO2020124611A1
Application number: PCT/CN2018/122959
Authority: WO
Inventors: 朱宇洪; 王良; 郑勇; 张景云; 倪观军
Original assignee: 华为技术有限公司
Priority date: 2018-12-22
Filing date: 2018-12-22
Publication date: 2020-06-25
Also published as: CN112789883B; CN115426687A; CN112789883A

Abstract

The embodiments of the present application provide a rate control method and device, which relate to the field of electronic technology and can adaptively adjust a coding rate and a transmission rate without disabling a CIS connection. The specific solution is: establishing an LE ACL connection between a first BLE device and a second BLE device and establishing a CIS connection by using first transmission parameters; coding audio data by using first coding parameters; sending the coded audio data to the second BLE device by means of the CIS connection by using the first transmission parameters; determining second coding parameters and second transmission parameters, the second coding parameters and the second transmission parameters being respectively used for determining a coding rate and a transmission rate; coding the audio data by using the second coding parameters; while sending the audio data to the second BLE device by means of the CIS connection by using the first coding parameters, sending the second transmission parameters to the second BLE device by means of the LE ACL connection; and sending the coded audio data to the second BLE device on the basis of the second transmission parameters. The embodiments of the present application are used for rate control.

Description

Rate control method and equipment

Technical field

The embodiments of the present application relate to the field of electronic technology, and in particular, to a rate control method and device.

Background technique

Bluetooth is a wireless technology standard that enables short-range data exchange. Bluetooth mainly includes Bluetooth low energy (BLE), and basic rate (BR)/enhanced data (EDR) Bluetooth. Among them, because BLE Bluetooth can reduce power consumption and cost, the transmission mechanism based on BLE is currently a hotspot of research and use. For example, the transmission mechanism may include a point-to-multipoint connection-based isochronous stream (CIS) transmission protocol and the like. Based on CIS connection, data can be exchanged between Bluetooth devices.

Summary of the invention

Embodiments of the present application provide a rate control method and device, which can adaptively adjust the coding rate and transmission rate without disconnecting the CIS connection.

To achieve the above purpose, the embodiments of the present application adopt the following technical solutions:

On the one hand, an embodiment of the present application provides a rate control method, including: a first low-power Bluetooth BLE device and a second BLE device establish a low-power asynchronous connection link (low energy connection asynchronous/link/logical transportation, LE ACL) ) Connection, establishing a CIS connection with the second BLE device according to the first transmission parameter of the CIS, which is used to determine the transmission rate of the audio data. The first BLE device encodes the audio data using the first encoding parameter; the first encoding parameter is used to determine the encoding rate of the audio data. The first BLE device uses the first transmission parameter to send the encoded audio data to the second BLE device through the CIS connection. The first BLE device determines a second encoding parameter and a second transmission parameter. The second encoding parameter is used to determine the encoding rate of the audio data, and the second encoding parameter is different from the first encoding parameter; the second transmission parameter is used to determine the audio data The transmission rate, and the second transmission parameter is different from the first transmission parameter. The first BLE device uses the second encoding parameter to encode the audio data. The first BLE device uses the first transmission parameter to send audio data to the second BLE device through the CIS connection, and sends the second transmission parameter to the second BLE device through the LEACL connection. The first BLE device uses the second transmission parameter to send audio data encoded with the second encoding parameter to the second BLE device through the CIS connection.

In this solution, the first BLE device can automatically update the coding parameters and transmission parameters according to the reference parameters such as the channel quality of the CIS connection without disconnecting the CIS connection, thereby adaptively adjusting the coding rate and the transmission rate, so that the coding The rate and transmission rate match.

In a possible implementation manner, before the first BLE device uses the second transmission parameter to send audio data to the second BLE device through the CIS connection, the method further includes: the first BLE device sends the update time indication information to the second BLE device. The first BLE device uses the second transmission parameter to send audio data to the second BLE device through the CIS connection, including: the first BLE device uses the second transmission parameter at the time indicated by the update time indication information, and uses the second transmission parameter to connect to the second through the CIS connection The BLE device sends audio data.

That is to say, the first BLE device and the second BLE device can automatically start the second transmission parameter at the agreed update time at the same time, thereby simultaneously updating the transmission rate.

In another possible implementation manner, before the first BLE device determines the second encoding parameter and the second transmission parameter, the method further includes: the first BLE device obtains the reference parameter. The first BLE device determining the second encoding parameter and the second transmission parameter includes: the first BLE device determining the second encoding parameter and the second transmission parameter according to the reference parameter when the reference parameter satisfies the preset condition.

In another possible implementation, the reference parameter includes the channel quality parameter of the CIS connection; when the reference parameter meets the preset condition, the first BLE device determines the second encoding parameter and the second transmission parameter according to the reference parameter, including: If the channel quality parameter of the CIS connection is greater than or equal to the first preset value, the first BLE device determines the second encoding parameter and the second transmission parameter according to the channel quality parameter of the CIS connection, so that the encoding rate determined by the second encoding parameter is greater than the first The encoding rate determined by the encoding parameter, the transmission rate determined by the second transmission parameter is greater than the transmission rate determined by the first transmission parameter. If the channel quality parameter of the CIS connection is less than the second preset value, the first BLE device determines the second transmission parameter according to the channel quality parameter of the CIS connection, so that the encoding rate determined by the second encoding parameter is less than the encoding rate determined by the first encoding parameter The transmission rate determined by the second transmission parameter is less than the transmission rate determined by the first transmission parameter.

In another possible implementation, if the channel quality parameter of the CIS connection is greater than or equal to the first preset value, after the first BLE device uses the second encoding parameter to encode the audio data, the first BLE device uses the first Two transmission parameters, sending audio data encoded with the second encoding parameter to the second BLE device through the CIS connection. If the channel quality parameter of the CIS connection is less than the second preset value, before the first BLE device uses the second encoding parameter to encode the audio data, the first BLE device uses the second transmission parameter to connect to the second BLE device through the CIS connection Send the audio data encoded with the second encoding parameter.

In another possible implementation manner, the reference parameter further includes the data volume of the encoded audio data to be transmitted. If the first BLE device determines that the channel quality parameter is worse than the preset value, or the channel quality parameter becomes worse, or the amount of data to be transmitted is greater than or equal to the first preset threshold, the first BLE device compares the audio data based on the second encoding parameter After encoding, the first BLE device sends audio data encoded based on the second encoding parameter to the second BLE device through the CIS connection based on the second transmission parameter; where the encoding rate corresponding to the second encoding parameter is lower than the first encoding parameter Corresponding coding rate.

In other words, the first BLE device may first reduce the coding rate and then reduce the transmission rate when determining that the coding rate and the transmission rate need to be reduced based on reference parameters such as channel quality parameters and the amount of data to be transmitted.

In another possible implementation manner, if the first BLE device determines that the channel quality parameter is better than the preset value, or the channel quality parameter becomes better, or the amount of data to be transmitted is less than or equal to the second preset threshold, the first Before the BLE device encodes the audio data based on the second encoding parameter, the first BLE device sends the audio data encoded based on the second encoding parameter to the second BLE device through the CIS connection based on the second transmission parameter; wherein, the second encoding parameter The corresponding coding rate is higher than the coding rate corresponding to the first coding parameter.

In other words, when the first BLE device determines that the encoding rate and the transmission rate need to be increased according to reference parameters such as the channel quality parameter and the amount of data to be transmitted, the first BLE device may first increase the transmission rate and then increase the encoding rate, so that Enough transmission capacity to transmit the encoded audio data.

In another possible implementation manner, the channel quality parameter includes a packet loss rate, and the second encoding parameter includes a bitpool value. The first BLE device determines the second encoding parameter according to the reference parameter, including: the first BLE device determines the corresponding target encoding rate and target bitpool value according to the packet loss rate, and the second encoding parameter includes the target bitpool value.

In this solution, the first BLE device may adjust the bitpool value in the encoding parameters according to the packet loss rate, thereby adjusting the encoding rate.

In another possible implementation manner, the reference parameter includes the data volume of the encoded audio data to be transmitted, and the first BLE device determines the second transmission parameter according to the reference parameter when the reference parameter meets the preset condition, including: The amount of data to be transmitted of the post-audio data is greater than or equal to a preset threshold, then the first BLE device determines the second encoding parameter and the mapping relationship between the amount of data to be transmitted and the preset amount of data to be transmitted and the encoding parameter and the transmission parameter The second transmission parameter is such that the coding rate of the audio data determined by the second coding parameter is less than the coding rate determined by the first coding parameter, and the transmission rate of the audio data determined by the second transmission parameter is less than the transmission rate determined by the first transmission parameter.

In another possible implementation manner, the reference parameter further includes the data volume of the encoded audio data to be transmitted, and the first BLE device is provided with encoding parameters of multiple gears. The first BLE device determining the second encoding parameter according to the reference parameter includes: if the amount of data to be transmitted is greater than or equal to the first preset threshold, the first BLE device sets the second encoding parameter to the first gear with the lowest encoding rate. Encoding parameters; the first BLE device periodically detects the amount of data to be transmitted; if the amount to be transmitted is less than the first preset threshold, the first BLE device sets the second encoding parameter to the encoding parameter of the second gear, the second gear The bit is the previous gear of the first gear, and the coding rate corresponding to the coding parameter of the second gear is higher than the coding rate corresponding to the coding parameter of the first gear.

In this solution, the first BLE device can gradually increase the encoding rate bit by bit.

In another possible implementation manner, the reference parameter further includes the data volume of the encoded audio data to be transmitted, and the first BLE device is provided with encoding parameters of multiple gears. The first BLE device determining the second encoding parameter according to the reference parameter includes: if the amount of data to be transmitted is less than or equal to the second preset threshold, the first BLE device sets the second encoding parameter to the corresponding third gear with the highest encoding rate Encoding parameter; the first BLE device periodically detects the amount of data to be transmitted; if the amount to be transmitted is greater than the second preset threshold, the first BLE device sets the second encoding parameter to the encoding parameter of the fourth gear, the fourth gear The bit is the next gear of the third gear, and the encoding rate corresponding to the encoding parameter of the fourth gear is lower than the encoding rate corresponding to the encoding parameter of the third gear.

In this solution, the first BLE device can gradually reduce the encoding rate bit by bit.

In another possible implementation manner, the reference parameter further includes the data volume of the encoded audio data to be transmitted. The first BLE device determining the second encoding parameter and the second transmission parameter according to the reference parameter includes: if the amount of data to be transmitted is greater than or equal to the first preset threshold, the first BLE device determines the second encoding parameter and the second transmission parameter, and The second coding parameter is used to reduce the coding rate, and the second transmission parameter is used to reduce the transmission rate.

In this way, when the amount of data to be transmitted is greater than or equal to the first preset threshold, the channel quality of the CIS connection may be poor, and the coding rate and the transmission rate may be reduced by adjusting the coding parameter and the transmission parameter.

In another possible implementation manner, if the amount of data to be transmitted is less than or equal to the second preset threshold, the first BLE device determines the second encoding parameter and the second transmission parameter, and the second encoding parameter is used to increase the encoding rate, The second transmission parameter is used to increase the transmission rate.

In this way, when the amount of data to be transmitted is less than or equal to the second preset threshold, the channel quality of the CIS connection may be better, and the coding rate and the transmission rate can be increased by adjusting the coding parameter and the transmission parameter.

In another possible implementation manner, after the first BLE device determines the second encoding parameter according to the reference parameter, the method further includes the first BLE device notifying the second BLE device of the second encoding parameter.

In this way, the second BLE device can decode the received encoded audio data according to the second encoding parameter.

In another possible implementation manner, the audio data encoded with the second encoding parameter includes indication information of the second encoding parameter.

That is, the first BLE device may notify the second BLE device of the second encoding parameter through the encoded audio data packet.

In another possible implementation manner, the first BLE device includes a first host and a first link layer, and the second BLE device includes a second link layer. The first BLE device sends the second transmission parameter to the second BLE device through the LEACL connection, which includes: the first host sends parameter update information to the first link layer, and the parameter update information includes the second transmission parameter. The first link layer sends CIS update request information to the second link layer, and the CIS update request information includes the second transmission parameter.

The BLE device may include a host and a link layer, and the process of negotiating and adjusting transmission parameters may be between the host of the first BLE device and the link layer, between the host of the second BLE device and the link layer, and the first The link layer between the BLE device and the second BLE device.

In another possible implementation manner, within the first BLE device, the first host and the first link layer exchange information through the host controller interface protocol HCI command; the first link layer of the first BLE device communicates with The second link layer of the second BLE device exchanges information through the link layer LL command.

In another possible implementation manner, the first BLE device may not send the update time indication information to the second BLE device, and the first BLE device and the second BLE device have agreed a preset time in advance, for example, the first BLE device The second transmission parameter is enabled at the Mth time after sending the parameter update information; for another example, the second BLE device enables the second transmission parameter at the Kth time after receiving the CIS update request information.

In another possible implementation manner, the first BLE device may not send the update time indication information to the second BLE device, and the first BLE device automatically enables the second transmission parameter after sending the parameter update information; for example, the second BLE After receiving the CIS update request message, the device automatically enables the second transmission parameter.

In another possible implementation, the second transmission parameter includes one or more of the following: the number of bursts BN, the number of sub-events NSE, the refresh timeout FT, the duration of sub-events, and the PHY type; where the PHY type includes the transmitted Bandwidth and modulation method.

In this way, the first BLE device can adjust the transmission rate by adjusting at least one of the number of bursts BN, the number of sub-events NSE, the refresh timeout FT, the duration of the sub-events, and the PHY type.

In another possible implementation manner, the first BLE device determines the second transmission parameter according to the reference parameter, and the second transmission parameter is used to increase the transmission rate of the audio data, including: if the first BLE device determines that the channel quality parameter is better than the When the set value or the channel quality parameter becomes better, the first BLE device determines the second transmission parameter. Compared with the first transmission parameter, the second transmission parameter increases the number of bursts BN, increases the number of sub-events NSE, reduces the refresh timeout FT, increases the duration of sub-events, and increases the transmission The bandwidth or the transmission rate corresponding to the modulation method used is higher.

In this way, when it is determined that the transmission rate needs to be increased according to the reference parameters such as the channel quality parameter and the amount of data to be transmitted, the first BLE device may increase the transmission rate by adjusting the transmission parameter.

In another possible implementation manner, the first BLE device determines the second transmission parameter according to the reference parameter, and the second transmission parameter is used to reduce the transmission rate of the audio data, including: if the first BLE device determines that the channel quality parameter is worse than the If the set value or the channel quality parameter becomes worse, the first BLE device determines the second transmission parameter. Compared with the first transmission parameter, the second transmission parameter reduces the number of bursts BN, reduces the number of sub-events NSE, increases the refresh timeout FT, reduces the duration of sub-events, and reduces the transmission The bandwidth, or the transmission rate corresponding to the modulation method used, is lower.

In this way, when it is determined that the transmission rate needs to be reduced according to the reference parameters such as the channel quality parameter and the amount of data to be transmitted, the first BLE device may reduce the transmission rate by adjusting the transmission parameter.

In another possible implementation manner, the first BLE device acquiring the reference parameter includes: the first BLE device acquiring the reference parameter from itself; or, the first BLE device acquiring the reference parameter from the second BLE device.

For example, the first BLE device may obtain channel quality parameters from its own controller; it may also obtain channel quality parameters from the controller of the second BLE device.

On the other hand, an embodiment of the present application provides a rate control apparatus, which is included in a first BLE device, and the apparatus has a function to implement the behavior of the first BLE device in the above aspects and possible implementation manners. This function can be realized by hardware, and can also be realized by hardware executing corresponding software. The hardware or software includes one or more modules or units corresponding to the above functions. For example, a connection module or unit, an encoding module or unit, a transmission module or unit, an acquisition module or unit, a determination module or unit, etc.

On the other hand, an embodiment of the present application provides a transmission rate control method, including: a second low-power Bluetooth BLE device establishes a low-power asynchronous connection link LEACL with a first BLE device, based on the first transmission parameter of the CIS A CIS connection is established with the first BLE device, and the first transmission parameter is used to determine the transmission rate of the audio data. The second BLE device uses the first transmission parameter to receive audio data sent by the first BLE device through the CIS connection. The second BLE device decodes the audio data received from the first BLE device according to the first encoding parameter; the first encoding parameter is used to determine the encoding rate of the audio data. If the second BLE device obtains the second encoding parameter from the first BLE device, the second BLE device decodes the audio data received from the first BLE device according to the second encoding parameter; the second encoding parameter is used to determine the audio The encoding rate of the data, and the second encoding parameter is different from the first encoding parameter. If the second BLE device adopts the first transmission parameter and receives the audio data sent by the first BLE device through the CIS connection, it receives the second transmission parameter sent by the first BLE device through the LEACL connection; the second transmission parameter is used to determine The transmission rate of the audio data, and the second transmission parameter is different from the first transmission parameter; then the second BLE device uses the second transmission parameter to receive the audio data sent by the first BLE device through the CIS connection.

In this solution, the second BLE device can adaptively adjust the transmission rate according to the transmission parameters sent by the first BLE device without disconnecting the CIS connection, and receive the updated coding parameters notified by the first BLE device. The received audio data is decoded so that the encoding rate and the transmission rate match.

In a possible implementation manner, the second BLE device acquires the second encoding parameter from the first BLE device, including: the second BLE device acquires from the audio data sent by the first BLE device and encoded with the second encoding parameter The second encoding parameter.

That is, the second BLE device can learn the updated encoding parameters of the first BLE device through the encoded audio data.

In another possible implementation manner, before the second BLE device uses the second transmission parameter to receive the audio data sent by the first BLE device through the CIS connection, the method further includes: the second BLE device receives the first BLE device to send The update time indication information. The second BLE device uses the second transmission parameter to receive the audio data sent by the first BLE device through the CIS connection, including: the second BLE device uses the second transmission parameter to receive the first data through the CIS connection at the time indicated by the update time indication information Audio data sent by a BLE device.

That is to say, the first BLE device and the second BLE device can simultaneously start the second transmission parameter at the agreed update time.

In another possible implementation manner, the first BLE device includes a first link layer, and the second BLE device includes a second host and a second link layer. The second BLE device receives the second transmission parameter sent by the first BLE device through the LEACL connection, including: the second link layer receives the CIS update request information sent by the first link layer, and the update request information includes the second transmission parameter. The second BLE device enables the second transmission parameter, including: the second link layer enables the second transmission parameter; the second link layer sends update completion information to the second host to indicate that the second transmission parameter is enabled.

The BLE device may include a host and a link layer, and the process of adjusting transmission parameters may be between the host of the first BLE device and the link layer, between the host of the second BLE device and the link layer, and the first BLE device With the link layer of the second BLE device.

In another possible implementation manner, within the second BLE device, the second host and the second link layer exchange information through the host controller interface protocol HCI command; the first link layer of the first BLE device communicates with The second link layer of the second BLE device exchanges information through the link layer LL command.

In another possible implementation manner, the second BLE device receives the second transmission parameter sent by the first BLE device through the LEACL connection, and the second BLE device receives the second transmission parameter from the first BLE device based on the second encoding parameter Before decoding the audio data, the method further includes: the second BLE device sends the channel quality parameter of the CIS connection to the first BLE device.

In this way, the first BLE device may determine the second encoding parameter and the second transmission parameter according to the channel quality parameter sent by the second BLE device.

In another possible implementation manner, the second BLE device may be a wireless headset.

On the other hand, an embodiment of the present application provides a rate control apparatus. The apparatus is included in a second BLE device, and the apparatus has a function to implement the behavior of the second BLE device in any of the above aspects and possible implementation manners. This function can be realized by hardware, and can also be realized by hardware executing corresponding software. The hardware or software includes one or more modules or units corresponding to the above functions. For example, a connection module or unit, a decoding module or unit, a transmission module or unit, an acquisition module or unit, etc.

On the other hand, an embodiment of the present application provides a system, which may include the first BLE device and the second BLE device in any possible implementation manner of any of the above aspects, and may implement the rate control method described above .

On the other hand, an embodiment of the present application provides a BLE device, including one or more processors and one or more memories. The one or more memories are coupled to one or more processors. The one or more memories are used to store computer program code. The computer program codes include computer instructions. When the one or more processors execute the computer instructions, the BLE device Perform the rate control method performed by the first BLE device or the second BLE device in any of the above aspects and any possible implementation.

On the other hand, an embodiment of the present application provides a computer storage medium, including computer instructions, which when executed on a computer, causes the computer to perform any of the above aspects and any possible implementation of the first BLE device or the first Two rate control methods performed by BLE devices.

On the other hand, an embodiment of the present application provides a computer program product that, when the computer program product runs on a computer, causes the computer to perform any one of the possible implementations of the first aspect or the second aspect described above. Two rate control methods performed by BLE devices.

BRIEF DESCRIPTION

FIG. 1 is a schematic diagram of a system structure provided by an embodiment of the present application;

2 is a schematic structural diagram of a mobile phone provided by an embodiment of the present application;

3A is a schematic structural diagram of an earplug provided by an embodiment of the present application;

3B is a schematic diagram of a TWS earphone and earphone box provided by an embodiment of the present application;

3C is a schematic diagram of an earplug provided by an embodiment of the present application;

4 is a schematic diagram of a Bluetooth system provided by an embodiment of this application;

5 is a flow chart of audio transmission provided by an embodiment of the present application;

6 is a flowchart of a method for adjusting transmission parameters provided by an embodiment of the present application;

7 is a schematic diagram of transmission parameter adjustment according to an embodiment of the present application;

8 is a flowchart of adjusting a rate provided by an embodiment of the present application;

9 is a schematic diagram of another transmission parameter adjustment provided by an embodiment of the present application;

10 is a schematic diagram of another transmission parameter adjustment provided by an embodiment of the present application;

11 is a schematic diagram of another transmission parameter adjustment provided by an embodiment of the present application;

12 is a flowchart of another rate adjustment provided by an embodiment of this application;

13 is a schematic diagram of another transmission parameter adjustment provided by an embodiment of the present application;

14 is a schematic diagram of another transmission parameter adjustment provided by an embodiment of the present application;

15 is a flowchart of another rate adjustment provided by an embodiment of this application;

16 is a flowchart of another rate adjustment provided by an embodiment of this application;

17 is a schematic structural diagram of a first BLE device provided by an embodiment of this application;

FIG. 18 is a schematic structural diagram of a second BLE device provided by an embodiment of the present application.

detailed description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. In the description of the embodiments of the present application, unless otherwise stated, "/" means "or", for example, A/B may mean A or B; "and/or" in this text is merely a description of related objects The association relationship indicates that there may be three relationships, for example, A and/or B, which may indicate that there are three cases in which A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of the present application, “plurality” refers to two or more than two.

As shown in FIG. 1, the pairing connection method provided in the embodiment of the present application may be applied to a system composed of an electronic device 01 and at least one external device 02. In this system, the electronic device 01 and the external device 02 are connected wirelessly. Among them, the wireless method may be Bluetooth (bluetooth, BT), wireless fidelity (wireless fidelity, Wi-Fi) network, global navigation satellite system (global navigation satellite system (GNSS), frequency modulation (frequency modulation (FM), close range Wireless communication technology (near field communication, NFC), infrared technology (infrared, IR) and other connections. For example, the electronic device 01 may be a mobile phone, a media player (such as MP3, MP4, etc.) tablet computer, notebook computer, ultra-mobile personal computer (UMPC), personal digital assistant (personal digital assistant, PDA), TV and other equipment. For example, the external device 02 may be a wireless headset, a wireless speaker, a wireless bracelet, a wireless vehicle, a wireless smart glasses, an augmented reality (AR)\virtual reality (VR) device, etc. No restrictions. Wherein, the wireless earphone may be a headphone, earplugs or other portable listening devices.

The external device 02 may include one main body, or may include a paired first main body 021 and a second main body 022, and the first main body 021 and the second main body 022 cooperate and cooperate with each other. For example, when the external device 02 is an earplug TWS earphone, the external device 02 may include a paired left earplug (usually marked with "L") and right earplug (usually marked with "R"). The left earplug and right earplug are used for For stereo playback, the left earplug can be used to play the left channel signal of audio data, and the right earplug can be used to synchronously play the right channel signal of the audio data.

In the system shown in FIG. 1, the electronic device 01 uses a mobile phone as an example, and the external device 02 uses an earplug-type TWS earphone and bracelet as an example for description. It can be understood that the electronic device 01 and the external device 02 in the system may also be other devices, which are not limited in this embodiment of the present application.

Exemplarily, when the electronic device 01 is a mobile phone 100, FIG. 2 shows a schematic structural diagram of the mobile phone 100. 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, a battery 142, an antenna 1, an antenna 2, Mobile communication module 150, wireless communication module 160, audio module 170, speaker 170A, receiver 170B, microphone 170C, headphone jack 170D, sensor module 180, key 190, motor 191, indicator 192, camera 193, display screen 194, and user Identification module (subscriber identification module, SIM) card interface 195 and so on. 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 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 application does not constitute a specific limitation on the mobile phone 100. In other embodiments of the present application, the mobile phone 100 may include more or fewer components than shown, or combine some components, or split some components, or arrange different components. The illustrated components can be implemented in hardware, software, or a combination of software and hardware.

The processor 110 may include one or more processing units. For example, the processor 110 may include an application processor (application processor, AP), a modem processor, a graphics processor (graphics processing unit, GPU), and an image signal processor. (image)signal processor (ISP), controller, memory, video codec, digital signal processor (DSP), baseband processor, and/or neural-network processing unit (NPU) Wait. Among them, the different processing units may be independent devices or may be integrated in one or more processors.

The controller may be the nerve center and command center of the mobile phone 100. The controller can generate the operation control signal according to the instruction operation code and the timing signal to complete the control of instruction fetch and execution.

The processor 110 may also be provided with a memory for storing instructions and data. In some embodiments, the memory in the processor 110 is a cache memory. The memory may store instructions or data that the processor 110 has just used or recycled. If the processor 110 needs to use the instruction or data again, it can be directly called from the memory. The repeated access is avoided, and the waiting time of the processor 110 is reduced, thereby improving the efficiency of the system.

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

The I2C interface is a bidirectional synchronous serial bus, including a serial data line (serial data line, SDA) and a serial clock line (derail clock line, SCL). In some embodiments, the processor 110 may include multiple sets of I2C buses. The processor 110 may respectively couple the touch sensor 180K, charger, flash, camera 193, etc. through different I2C bus interfaces. For example, the processor 110 may couple the touch sensor 180K through the I2C interface, so that the processor 110 and the touch sensor 180K communicate through the I2C bus interface to realize the touch function of the mobile phone 100.

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 can transmit audio signals to the wireless communication module 160 through the I2S interface to implement functions such as answering calls through a Bluetooth headset.

The PCM interface can also be used for audio communication, sampling, quantizing and encoding 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 can also transmit audio signals to the wireless communication module 160 through the PCM interface to implement the function of answering the phone call through the Bluetooth headset. Both I2S interface and PCM interface can be used for audio communication.

The UART interface is a universal serial data bus used for asynchronous communication. The bus may be a bidirectional 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 implement the Bluetooth function. In some embodiments, the audio module 170 can transmit audio signals to the wireless communication module 160 through the UART interface, so as to realize the function of playing music through the Bluetooth headset.

The MIPI interface can be used to connect the processor 110 to peripheral devices such as the display screen 194 and the camera 193. MIPI interface includes camera serial interface (camera serial interface, CSI), display serial interface (display serial interface, DSI) and so on. In some embodiments, the processor 110 and the camera 193 communicate through a CSI interface to implement the shooting function of the mobile phone 100. The processor 110 and the display screen 194 communicate through the DSI interface to realize the display function of the mobile phone 100.

The GPIO interface can be configured via software. The GPIO interface can be configured as a control signal or a data signal. In some embodiments, the GPIO interface may be used to connect the processor 110 to the camera 193, the display screen 194, the wireless communication module 160, the audio module 170, the sensor module 180, and the like. GPIO interface can also be configured as I2C interface, I2S interface, UART interface, MIPI interface, etc.

The USB interface 130 is an interface that conforms to the USB standard specifications, and may specifically be a Mini USB interface, a Micro USB interface, a USB Type C interface, etc. The USB interface 130 can be used to connect a charger to charge the mobile phone 100, and can also be used to transfer data between the mobile phone 100 and an external device. It can also be used to connect headphones and play audio through the headphones. The interface can also be used to connect other mobile phones, such as AR devices.

It can be understood that the interface connection relationship between the modules illustrated in the embodiments of the present application is only a schematic description, and does not constitute a limitation on the structure of the mobile phone 100. In other embodiments of the present application, the mobile phone 100 may also use different interface connection methods in the foregoing embodiments, or a combination of multiple interface connection methods.

The charging management module 140 is used to receive charging input from the charger. The charger can be a wireless charger or a wired charger. In some wired charging embodiments, the charging management module 140 may receive the charging input of the wired charger through the USB interface 130. In some wireless charging embodiments, the charging management module 140 may receive wireless charging input through the wireless charging coil of the mobile phone 100. While the charging management module 140 charges the battery 142, it can also supply power to the mobile phone through the power management module 141.

The power management module 141 is used to connect the battery 142, the charging management module 140 and the processor 110. The power management module 141 receives input from the battery 142 and/or the charging management module 140, and supplies power to the processor 110, internal memory 121, external memory, display screen 194, camera 193, wireless communication module 160, and the like. The power management module 141 can also be used to monitor battery capacity, battery cycle times, battery health status (leakage, impedance) and other parameters. In some other embodiments, the power management module 141 may also be disposed in the processor 110. In other embodiments, the power management module 141 and the charging management module 140 may also be set in the same device.

The wireless communication function of the mobile phone 100 can be realized by the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 160, the modem processor and the baseband processor.

Antenna 1 and antenna 2 are used to transmit and receive electromagnetic wave signals. Each antenna in the mobile phone 100 can be used to cover a single or multiple communication frequency bands. Different antennas can also be reused to improve antenna utilization. For example, the antenna 1 can be multiplexed as a diversity antenna of a wireless local area network. In other embodiments, the antenna may be used in conjunction with a tuning switch.

The mobile communication module 150 can provide a wireless communication solution including 2G/3G/4G/5G and the like applied to the mobile phone 100. The mobile communication module 150 may include at least one filter, switch, power amplifier, low noise amplifier (LNA), and the like. The mobile communication module 150 can receive the electromagnetic wave from the antenna 1 and filter, amplify, etc. the received electromagnetic wave, and transmit it to the modem processor for demodulation. The mobile communication module 150 can also amplify the signal modulated by the modulation and demodulation processor and convert it to electromagnetic wave radiation through the antenna 1. In some embodiments, at least part of the functional modules of the mobile communication module 150 may be provided in the processor 110. In some embodiments, at least part of the functional modules of the mobile communication module 150 and at least part of the modules of the processor 110 may be provided in the same device.

The modem processor may include a modulator and a demodulator. Among them, the modulator is used to modulate the low-frequency baseband signal to be transmitted into a high-frequency signal. The demodulator is used to demodulate the received electromagnetic wave signal into a low-frequency baseband signal. The demodulator then transmits the demodulated low-frequency baseband signal to the baseband processor for processing. The low-frequency baseband signal is processed by the baseband processor and then passed to the application processor. The application processor outputs a sound signal through an audio device (not limited to a speaker 170A, a receiver 170B, etc.), or displays an image or video through a display screen 194. In some embodiments, the modem processor may be an independent device. In other embodiments, the modem processor may be independent of the processor 110, and may be set in the same device as the mobile communication module 150 or other functional modules.

The wireless communication module 160 can provide wireless local area network (wireless local area networks, WLAN) (such as wireless fidelity (Wi-Fi) network), Bluetooth (bluetooth, BT), and global navigation satellite system that are applied to the mobile phone 100 (global navigation system (GNSS), frequency modulation (FM), 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 the electromagnetic wave via the antenna 2, frequency-modulates and filters the electromagnetic wave signal, and sends the processed signal to the processor 110. The wireless communication module 160 can also receive the signal to be transmitted from the processor 110, frequency-modulate it, amplify it, and convert it to electromagnetic waves through the antenna 2 to radiate it out.

For example, in the embodiment of the present application, the mobile phone 100 may use the wireless communication module 160 to establish a wireless connection with an external device through a wireless communication technology (such as Bluetooth). Based on the established wireless connection, the mobile phone 100 can send audio data to the external device and can also receive audio data from the external device. In the embodiment of the present application, the processor 110 may also adaptively adjust the transmission rate when the mobile phone sends audio data to the external device according to factors such as the channel quality of the link between the mobile phone 100 and the external device and the amount of data to be transmitted.

In some embodiments, the antenna 1 of the mobile phone 100 is coupled to the mobile communication module 150, and the antenna 2 is coupled to the wireless communication module 160, so that the mobile phone 100 can communicate with the network and other devices through wireless communication technology. Wireless communication technology may include global mobile communication system (global system for mobile communications, GSM), general packet radio service (general packet radio service, GPRS), code division multiple access (code division multiple access, CDMA), broadband code division Multiple access (wideband code division multiple access, WCDMA), time division code division multiple access (time-division code division multiple access, TD-SCDMA), long-term evolution (long term evolution, LTE), BT, GNSS, WLAN, NFC, FM , And/or IR technology, etc. GNSS can include global positioning system (GPS), global navigation satellite system (global navigation system (GLONASS), Beidou satellite navigation system (beidou navigation, satellite system, BDS), quasi-zenith satellite system (quasi-zenith satellite system (QZSS) and/or satellite-based augmentation systems (SBAS).

The mobile phone 100 realizes a display function through a GPU, a display screen 194, and an application processor. The GPU is a microprocessor for image processing, connecting the display screen 194 and the application processor. The GPU is used to perform mathematical and geometric calculations, and is used for graphics rendering. The processor 110 may include one or more GPUs that execute program instructions to generate or change display information.

The display screen 194 is used to display images, videos and the like. The display screen 194 includes a display panel. The display panel can use a liquid crystal display (LCD), organic light-emitting diode (OLED), active matrix organic light-emitting diode or active matrix organic light-emitting diode (active-matrix organic light-emitting diode) emitting diode, AMOLED, flexible light-emitting diode (FLED), Miniled, MicroLed, Micro-oLed, quantum dot light emitting diode (QLED), etc. In some embodiments, the mobile phone 100 may include 1 or N display screens 194, where N is a positive integer greater than 1.

The mobile phone 100 can realize a shooting function through an ISP, a camera 193, a video codec, a GPU, a display screen 194, an application processor, and the like.

The ISP processes the data fed back by the camera 193. For example, when taking a picture, the shutter is opened, the light is transmitted to the camera photosensitive element through the lens, the optical signal is converted into an electrical signal, and the camera photosensitive element transmits the electrical signal to the ISP for processing, which is converted into a visible image. ISP can also optimize the algorithm of image noise, brightness and skin color. ISP can also optimize the exposure, color temperature and other parameters of the shooting scene. In some embodiments, the ISP may be set in the camera 193.

The camera 193 is used to capture still images or videos. The object generates an optical image through the lens and projects it onto the photosensitive element. The photosensitive element may be a charge coupled device (charge coupled device, CCD) or a complementary metal-oxide-semiconductor (CMOS) phototransistor. The photosensitive element converts the optical signal into an electrical signal, and then transmits the electrical signal to the ISP to convert it into a digital image signal. The ISP outputs the digital image signal to the DSP for processing. DSP converts digital image signals into standard RGB, YUV and other format image signals. In some embodiments, the mobile phone 100 may include 1 or N cameras 193, where N is a positive integer greater than 1.

The digital signal processor is used to process digital signals. In addition to digital image signals, it can also process other digital signals. For example, when the mobile phone 100 is selected at a frequency point, the digital signal processor is used to perform Fourier transform on the energy at the frequency point.

The video codec is used to compress or decompress digital video. The mobile phone 100 may support one or more video codecs. In this way, the mobile phone 100 can play or record videos in various encoding formats, such as: moving picture experts group (moving picture experts, MPEG) 1, MPEG2, MPEG3, MPEG4, etc.

NPU is a neural-network (NN) computing processor. By drawing on the structure of biological neural networks, such as the transfer mode between neurons in the human brain, it can quickly process the input information and can continue to self-learn. The NPU can realize applications such as intelligent recognition of the mobile phone 100, such as image recognition, face recognition, voice recognition, and text understanding.

The external memory interface 120 can be used to connect an external memory card, such as a Micro SD card, to expand the storage capacity of the mobile phone 100. The external memory card communicates with the processor 110 through the external memory interface 120 to realize the data storage function. For example, save music, video and other files in an external memory card.

The internal memory 121 may be used to store computer executable program code, and the executable program code includes instructions. The processor 110 executes instructions stored in the internal memory 121 to execute various functional applications and data processing of the mobile phone 100. For example, in the embodiment of the present application, the processor 110 may establish a wireless pairing connection with the two main bodies of the external device through the wireless communication module 160 by executing instructions stored in the internal memory 121, as well as with the external device. Short distance data exchange to realize functions such as calling and playing music through external equipment. The internal memory 121 may include a storage program area and a storage data area. Among them, the storage program area may store an operating system, at least one function required application programs (such as sound playback function, image playback function, etc.). The storage data area may store data (such as audio data, phone book, etc.) created during the use of the mobile phone 100 and the like. In addition, the internal memory 121 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, a universal flash memory (universal flash storage, UFS), and so on.

In the embodiment of the present application, the mobile phone 100 may use wireless communication technology (such as Bluetooth) to establish a wireless connection between the two main bodies of the external device. For example, the mobile phone 100 establishes a wireless connection with the first body, and then establishes a wireless connection between the mobile phone 100 and the second body through the first body. After the wireless connection is established, the mobile phone 100 can store the Bluetooth address of the external device in the internal memory 121. In some embodiments, when the external device is a device including two main bodies, such as a TWS headset, the left and right earbuds of the TWS headset have respective Bluetooth addresses, and the mobile phone 100 may store the Bluetooth addresses of the left and right earbuds of the TWS headset in the internal storage. In the memory 121, the left and right earplugs of the TWS earphone are used as a pair of devices.

The mobile phone 100 may implement audio functions through an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, a headphone interface 170D, and an application processor. For example, music playback, recording, etc.

The audio module 170 is used to convert digital audio information into analog audio signal output, and also used to convert analog audio input into digital audio signal. The audio module 170 may further include an encoder and a decoder for encoding and decoding audio signals. In some embodiments, the audio module 170 may be disposed in the processor 110, or some functional modules of the audio module 170 may be disposed in the processor 110.

The speaker 170A, also called "speaker", is used to convert audio electrical signals into sound signals. The mobile phone 100 can listen to music through the speaker 170A, or listen to a hands-free call.

The receiver 170B, also known as "handset", is used to convert audio electrical signals into sound signals. When the mobile phone 100 answers a call or a voice message, the voice can be received by holding the receiver 170B close to the ear.

The microphone 170C, also known as "microphone", "microphone", is used to convert sound signals into electrical signals. When making a call or sending a voice message, the user can make a sound by approaching the microphone 170C through a person's mouth, and input a sound signal to the microphone 170C. The mobile phone 100 may be provided with at least one microphone 170C. In other embodiments, the mobile phone 100 may be provided with two microphones 170C. In addition to collecting sound signals, it may also achieve a noise reduction function. In other embodiments, the mobile phone 100 may also be provided with three, four, or more microphones 170C to collect sound signals, reduce noise, identify sound sources, and implement directional recording functions.

The headset interface 170D is used to connect wired headsets. The headphone jack 170D may be a USB jack 130, or a 3.5mm open mobile phone platform (OMTP) standard interface, and the American Telecommunications Industry Association (cellular telecommunication industry association of the USA, CTIA) standard interface.

In the embodiment of the present application, when the mobile phone 100 establishes a wireless connection with an external device, such as a TWS headset, the TWS headset can be used as an audio input/output device of the mobile phone 100. Exemplarily, the audio module 170 may receive the audio electrical signal transmitted by the wireless communication module 160 to realize functions such as answering a phone call and playing music through a TWS headset. For example, during a user's phone call, the TWS headset can collect the user's voice signal, convert it into an audio electrical signal, and send it to the wireless communication module 160 of the mobile phone 100. The wireless communication module 160 transmits the audio electrical signal to the audio module 170. The audio module 170 can convert the received audio electrical signal into a digital audio signal, encode it, and pass it to the mobile communication module 150. It is transmitted by the mobile communication module 150 to the call peer device to realize the call. For another example, when the user uses the media player of the mobile phone 100 to play music, the application processor may transmit the audio electrical signal corresponding to the music played by the media player to the audio module 170. The audio electrical signal is transmitted to the wireless communication module 160 by the audio module 170. The wireless communication module 160 may send the audio electrical signal to the TWS headset, so that the TWS headset converts the audio electrical signal into a sound signal and plays it.

The pressure sensor 180A is used to sense the pressure signal and can convert the pressure signal into an electrical signal. In some embodiments, the pressure sensor 180A may be provided on the display screen 194. There are many types of pressure sensors 180A, such as resistive pressure sensors, inductive pressure sensors, and capacitive pressure sensors. The capacitive pressure sensor may be a parallel plate including at least two conductive materials. When force is applied to the pressure sensor 180A, the capacitance between the electrodes changes. The mobile phone 100 determines the strength of the pressure based on the change in capacitance. When a touch operation is applied to the display screen 194, the mobile phone 100 detects the intensity of the touch operation according to the pressure sensor 180A. The mobile phone 100 may calculate the touched position based on the detection signal of the pressure sensor 180A. In some embodiments, touch operations that act on the same touch position but have different touch operation intensities may correspond to different operation instructions. For example, when a touch operation with a touch operation intensity less than the first pressure threshold acts on the short message application icon, an instruction to view the short message is executed. When a touch operation with a touch operation intensity greater than or equal to the first pressure threshold acts on the short message application icon, an instruction to create a new short message is executed.

The gyro sensor 180B may be used to determine the movement posture of the mobile phone 100. In some embodiments, the angular velocity of the mobile phone 100 around three axes (ie, x, y, and z axes) may be determined by the gyro sensor 180B. The gyro sensor 180B can be used for image stabilization. Exemplarily, when the shutter is pressed, the gyro sensor 180B detects the shaking angle of the mobile phone 100, calculates the distance that the lens module needs to compensate based on the angle, and allows the lens to counteract the shaking of the mobile phone 100 through reverse movement to achieve anti-shake. The gyro sensor 180B can also be used for navigation and somatosensory game scenes.

The air pressure sensor 180C is used to measure air pressure. In some embodiments, the mobile phone 100 calculates the altitude using the air pressure value measured by the air pressure sensor 180C to assist positioning and navigation.

The magnetic sensor 180D includes a Hall sensor. The mobile phone 100 can detect the opening and closing of the flip holster using the magnetic sensor 180D. In some embodiments, when the mobile phone 100 is a clamshell machine, the mobile phone 100 can detect the opening and closing of the clamshell according to the magnetic sensor 180D. Furthermore, according to the detected opening and closing state of the holster or the opening and closing state of the flip cover, characteristics such as automatic unlocking of the flip cover are set.

The acceleration sensor 180E can detect the magnitude of acceleration of the mobile phone 100 in various directions (generally three axes). When the mobile phone 100 is stationary, the magnitude and direction of gravity can be detected. It can also be used for recognizing the posture of mobile phones, and used in applications such as horizontal and vertical screen switching and pedometers.

The distance sensor 180F is used to measure the distance. The mobile phone 100 can measure the distance by infrared or laser. In some embodiments, when shooting scenes, the mobile phone 100 may use the distance sensor 180F to measure distance to achieve fast focusing.

The proximity light sensor 180G may include, for example, a light emitting diode (LED) and a light detector, such as a photodiode. The light emitting diode may be an infrared light emitting diode. The mobile phone 100 emits infrared light outward through a light emitting diode. The mobile phone 100 uses a photodiode to detect infrared reflected light from nearby objects. When sufficient reflected light is detected, it can be determined that there is an object near the mobile phone 100. When insufficient reflected light is detected, the mobile phone 100 can determine that there is no object near the mobile phone 100. The mobile phone 100 can use the proximity light sensor 180G to detect that the user is holding the mobile phone 100 close to the ear to talk, so as to automatically turn off the screen to save power. The proximity light sensor 180G can also be used in leather case mode, pocket mode automatically unlocks and locks the screen.

The ambient light sensor 180L is used to sense the brightness of ambient light. The mobile phone 100 can adaptively adjust the brightness of the display screen 194 according to the perceived ambient light brightness. The ambient light sensor 180L can also be used to automatically adjust the white balance when taking pictures. The ambient light sensor 180L can also cooperate with the proximity light sensor 180G to detect whether the mobile phone 100 is in a pocket to prevent accidental touch.

The fingerprint sensor 180H is used to collect fingerprints. The mobile phone 100 can use the collected fingerprint characteristics to unlock the fingerprint, access the application lock, take a picture of the fingerprint, and answer the call with the fingerprint.

The temperature sensor 180J is used to detect the temperature. In some embodiments, the mobile phone 100 uses the temperature detected by the temperature sensor 180J to execute a temperature processing strategy. For example, when the temperature reported by the temperature sensor 180J exceeds a threshold, the mobile phone 100 performs to reduce the performance of the processor located near the temperature sensor 180J in order to reduce power consumption and implement thermal protection. In some other embodiments, when the temperature is lower than another threshold, the mobile phone 100 heats the battery 142 to avoid abnormal shutdown of the mobile phone 100 due to low temperature. In some other embodiments, when the temperature is below another threshold, the mobile phone 100 performs boosting on the output voltage of the battery 142 to avoid abnormal shutdown due to low temperature.

Touch sensor 180K, also known as "touch panel". The touch sensor 180K may be disposed on the display screen 194, and the touch sensor 180K and the display screen 194 constitute a touch screen, also called a "touch screen". The touch sensor 180K is used to detect a touch operation acting on or near it. The touch sensor can pass the detected touch operation to the application processor to determine the type of touch event. The visual output related to the touch operation can be provided through the display screen 194. In other embodiments, the touch sensor 180K may also be disposed on the surface of the mobile phone 100, which is different from the location where the display screen 194 is located.

The bone conduction sensor 180M can acquire vibration signals. In some embodiments, the bone conduction sensor 180M can acquire the vibration signal of the vibrating bone mass of the human voice. The bone conduction sensor 180M can also contact the pulse of the human body and receive a blood pressure beating signal. In some embodiments, the bone conduction sensor 180M may also be provided in the earphone and combined into a bone conduction earphone. The audio module 170 can parse out the voice signal based on the vibration signal of the vibrating bone block of the voice part acquired by the bone conduction sensor 180M to realize the voice function. The application processor can analyze the heart rate information based on the blood pressure beating signal acquired by the bone conduction sensor 180M, and realize the heart rate detection function.

The key 190 includes a power-on key, a volume key, and the like. The key 190 may be a mechanical key. It can also be a touch button. The mobile phone 100 can receive key input and generate key signal input related to user settings and function control of the mobile phone 100.

The motor 191 may generate a vibration prompt. The motor 191 can be used for vibration notification of incoming calls and can also be used for touch vibration feedback. For example, touch operations applied to different applications (such as taking pictures, audio playback, etc.) may correspond to different vibration feedback effects. For the touch operation of different areas of the display screen 194, the motor 191 can also correspond to different vibration feedback effects. Different application scenarios (for example: time reminder, receiving information, alarm clock, game, etc.) can also correspond to different vibration feedback effects. Touch vibration feedback effect can also support customization.

The indicator 192 can be an indicator light, which can be used to indicate the charging state, the amount of power change, and can also be used to indicate messages, missed calls, notifications, and the like.

The SIM card interface 195 is used to connect a SIM card. The SIM card can be inserted into or removed from the SIM card interface 195 to achieve contact and separation with the mobile phone 100. The mobile phone 100 can support 1 or N SIM card interfaces, where N is a positive integer greater than 1. The SIM card interface 195 can support Nano SIM cards, Micro SIM cards, SIM cards, etc. The same SIM card interface 195 can insert multiple cards at the same time. The types of multiple cards can be the same or different. The SIM card interface 195 can also be compatible with different types of SIM cards. The SIM card interface 195 can also be compatible with external memory cards. The mobile phone 100 interacts with the network through the SIM card to realize functions such as call and data communication. In some embodiments, the mobile phone 100 uses eSIM, that is, an embedded SIM card. The eSIM card can be embedded in the mobile phone 100 and cannot be separated from the mobile phone 100.

Exemplarily, when the external device 02 is a TWS earphone, FIG. 3A shows a structural diagram of an earplug (left earplug or right earplug), one of the main bodies of a TWS earphone. As shown in FIG. 3A, the earplug of the TWS earphone may include: a processor 301, a memory 302, a sensor 303, a wireless communication module 304, a receiver 305, a microphone 306, and a power supply 307.

The memory 302 may be used to store application code, such as an application code for establishing a wireless connection with another earbud of the TWS earphone and pairing the earbud with the electronic device 01.

The processor 301 can control and execute the above application program code to implement the function of the earplug of the TWS earphone in the embodiment of the present application. For example, according to the channel quality of the link between the TWS headset and the electronic device, the amount of data to be transmitted, and other factors, the function of adaptively adjusting the encoding rate and transmission rate of the audio data sent by the TWS headset to the electronic device.

The memory 302 may also store a Bluetooth address for uniquely identifying the earbud, and a Bluetooth address of another earbud where the TWS earphone is stored. In addition, the memory 302 may also store the pairing history of the electronic device 01 that has successfully paired with the earplug. For example, the pairing history may include the Bluetooth address of the electronic device 01 that has successfully paired with the earbud. Based on the pairing history, the earplug can be automatically connected back to the paired giant electronic device 01. The aforementioned Bluetooth address may be a media access control (media access control, MAC) address.

The sensor 303 may be a distance sensor or a proximity light sensor. The earplug can determine whether it is worn by the user through the sensor 303. For example, the earplug may use a proximity light sensor to detect whether there is an object near the earplug, thereby determining whether the earplug is worn by the user. When it is determined that the earplug is worn, the earplug may open the receiver 305. In some embodiments, the earplug may also include a bone conduction sensor, combined with a bone conduction earphone. Using the bone conduction sensor, the earplug can obtain the vibration signal of the vibrating bone mass of the voice part, analyze the voice signal, and realize the voice function. In some other embodiments, the earplug may further include a touch sensor for detecting the user's touch operation. In other embodiments, the earplug may further include a fingerprint sensor, which is used to detect a user's fingerprint and identify the user's identity. In other embodiments, the earplug may further include an ambient light sensor, which may adaptively adjust some parameters, such as volume, according to the perceived brightness of the ambient light.

The wireless communication module 304 is used to support wireless data exchange between the current earplug and another earplug of the TWS earphone and various electronic devices 01. In some embodiments, the wireless communication module 304 may be a Bluetooth transceiver. The earplugs of the TWS headset can establish a wireless connection with the electronic device 01 through the Bluetooth transceiver to achieve short-range data exchange between the two. For example, exchange audio data, exchange control data, etc.

The audio module 300 is used to convert digital audio information into analog audio signal output, and also used to convert analog audio input into digital audio signal. The audio module 300 may further include an encoder and a decoder for encoding and decoding audio signals. In some embodiments, the audio module 300 may be disposed in the processor 301, or a part of the functional modules of the audio module 300 may be disposed in the processor 301.

At least one receiver 305, which may also be referred to as an "earpiece," may be used to convert audio electrical signals into sound signals and play them. For example, when the earplug of the TWS earphone is used as the audio output device of the electronic device 01, the receiver 305 can convert the received audio electrical signal into a sound signal and play it.

At least one microphone 306, which may also be referred to as a "microphone" or a "microphone," is used to convert sound signals into audio electrical signals. For example, when the earplug of the TWS earphone is used as the audio input device of the electronic device 01, the microphone 306 can collect the user's voice signal and convert it into an audio electrical signal during the user's speech (such as talking or sending a voice message) . The above audio electrical signal is the audio data in the embodiment of the present application.

The power supply 307 can be used to supply power to various components included in the earplugs of the TWS earphone. In some embodiments, the power source 307 may be a battery, such as a rechargeable battery.

Generally, TWS earphones will be equipped with a headphone box (eg, headphone box 023 shown in FIG. 3B). The earphone box can be used to store the left and right earplugs of TWS earphones. As shown in FIG. 3B in combination with FIG. 3A, the earphone box 023 can be used to store the left earplug 022 and the right earplug 021 of the TWS earphone. In some embodiments, the headset box 023 may be provided with at least one touch control 024, which may be used to trigger operations such as re-pairing of the TWS headset and the electronic device 01. The earphone box 023 may also be provided with a charging port 025 for charging the earphone box itself. It can be understood that the earphone box 023 may further include other controls, which will not be described one by one here. In addition, the earphone box 023 can also charge the left and right earplugs of the TWS earphone. Correspondingly, in some embodiments, the earplugs of the TWS earphone may further include: an input/output interface 308.

The input/output interface 308 can be used to provide any wired connection between the earplug of the TWS earphone and the earphone box (such as the earphone box 023 described above). In some embodiments, the input/output interface 308 may be an electrical connector. When the earplugs of the TWS earphone are placed in the earphone box, the earplugs of the TWS earphone can be electrically connected to the earphone box (such as the input/output interface included in the earphone box) through the electrical connector. After the electrical connection is established, the earphone box can charge the power supply 307 of the earplug of the TWS earphone. After the electrical connection is established, the earplugs of the TWS headset can also communicate with the headset box. For example, the earplugs of a TWS earphone can receive pairing instructions from the earphone box through this electrical connection. The pairing command is used to instruct the earbuds of the TWS headset to turn on the wireless communication module 304, so that the earbuds of the TWS headset can use the corresponding wireless communication protocol (such as Bluetooth) to pair and connect with the electronic device 01.

Of course, the earplugs of the aforementioned TWS earphones may not include the input/output interface 308. In this case, the earplug may implement charging or data communication functions based on the wireless connection established with the earphone box through the wireless communication module 304 described above.

In addition, in some embodiments, the earphone box (such as the aforementioned earphone box 023) may further include a processor, a memory, and other components. The memory can be used to store application program code, and is controlled and executed by the processor of the earphone box to realize the function of the earphone box. E.g. When the user opens the lid of the earphone box, the processor of the earphone box can send a pairing command to the earplug of the TWS headset in response to the user's operation of opening the lid by executing the application code stored in the memory.

It can be understood that the structure illustrated in the embodiments of the present application does not constitute a specific limitation on the earplugs of the TWS earphone. It may have more or fewer components than shown in FIG. 3A, may combine two or more components, or may have different component configurations. For example, the earplug may also include an indicator light 309 (which can indicate the status of the earplug's power level, etc.), a display screen 310 (which can prompt the user about relevant information), a dust filter (which can be used with the earpiece), a motor, and other components. The various components shown in FIG. 3A may be implemented in hardware, software, or a combination of hardware and software, including one or more signal processing or application specific integrated circuits.

Exemplarily, FIG. 3C provides a schematic structural diagram of an earplug, which may include a receiver 305, a microphone 306, an input/output interface 308, an indicator light 309, a display screen 310, and a touch key 311 and a proximity light sensor 312. The touch key 311 is used in conjunction with the touch sensor to trigger operations such as pause, play, record, turn on the MIC, and turn off the MIC.

It should be noted that the structure of the left and right earplugs of the TWS earphone can be the same. For example, the left and right earplugs of a TWS earphone may include the components shown in FIG. 3A. Alternatively, the structure of the left and right earplugs of the TWS earphone may also be different. For example, one earplug (such as the right earplug) of the TWS earphone may include the components shown in FIG. 3A, and the other earplug (such as the left earplug) may include other components other than the microphone 306 in FIG. 3A.

It should also be noted that the structures shown in FIGS. 3A, 3B, and 3C are only exemplary descriptions, and are not intended to limit the structure or function of the TWS earphone and earphone box.

In this embodiment of the present application, the mobile phone is the electronic device 01, the TWS headset is the external device 02, and the connection between the mobile phone and the TWS headset is established by Bluetooth as an example.

The TWS headset can interact with audio data and control data (such as synchronization data, link configuration parameters, previous track, volume up, pause or answer control commands, etc.) through the Bluetooth connection with the mobile phone. Wherein, the audio data may include media data and voice data. For example, TWS headsets can play media data such as music, recordings, and sounds in video files for users; in telephone, audio call, and video call scenarios, they can play incoming call notification sounds, play voice data of the opposite end of the call, and collect user voices Data is sent to the mobile phone; in the game scene, you can play background music, game prompts, teammates' voice data, etc., and collect the user's voice data to send to the mobile phone; in the WeChat voice message scene, you can play voice messages and collect user recordings And send the voice data to the mobile phone; in scenarios such as voice assistants, you can collect the user's voice data and send it to the mobile phone.

In order to enable various audio applications such as music, phone, games, etc. to be realized through Bluetooth technology, Bluetooth devices need to follow certain Bluetooth protocols. FIG. 4 shows a schematic diagram of a Bluetooth system, which may include an application, an application adaptation layer, a Bluetooth host (host), a host controller interface protocol (host controller interface (HCI), and a Bluetooth controller). Among them, the application adaptation layer can be used to adapt the correspondence between different applications and the underlying protocols of different manufacturers. The Bluetooth host may include an application profile, protocol stack, rate control unit, and so on. Among them, the protocol stack may include a service discovery protocol (service discovery protocol, SDP), a profile based general access profile (general access access profile, GAP) and other protocols. The rate control unit can adaptively adjust the encoding rate of the audio encoder of the Bluetooth device and the transmission rate of audio data sent to other devices according to the parameters such as the channel quality of the current link between the Bluetooth device and other devices, the amount of data to be transmitted, etc. . The controller may include a link layer (LL), a baseband, and a radio frequency (Bluetooth radio frequency) unit. Among them, LL is responsible for managing the communication between Bluetooth devices, to achieve link establishment, verification, link configuration and other operations. The baseband mainly performs mutual conversion between radio frequency signals and digital or voice signals to implement baseband protocols and other low-level connection procedures. The radio frequency unit is used to transmit and receive Bluetooth signals. The controller can also be used to detect the channel quality of the link between the Bluetooth device and other devices.

The Bluetooth connection scheme between the TWS headset and the mobile phone may include a monitoring scheme, a forwarding scheme, a near field magnetic induction (NFMI) scheme, and a dual-transmission scheme (or dual-connection scheme).

Among them, in the monitoring solution, the TWS headset may include a main earbud and a secondary earbud, the mobile phone establishes a Bluetooth connection with the main earbud, completes the transmission of audio data to the main earbud, and completes the business actions triggered by the mobile phone and the TWS headset (such as play, pause , Switch to the previous track, increase the volume, etc.); a Bluetooth connection is established between the two earbuds to complete the information synchronization between the two earbuds; the secondary earbuds obtain audio data by monitoring the Bluetooth link between the main earbuds and the mobile phone.

In the forwarding scheme, the TWS headset can include a main earbud and a secondary earbud, establish a Bluetooth connection between the mobile phone and the main earbud, complete the transmission of audio data to the main earbud, and complete the business action triggered by the mobile phone and the TWS headset; establish between the two earbuds There is a Bluetooth connection to complete the information synchronization between the dual earbuds, and the main earbuds forward the audio data to the secondary earbuds through the Bluetooth link with the secondary earbuds.

In the NFMI solution, the TWS headset can include a main earbud and a secondary earbud, a Bluetooth connection is established between the mobile phone and the main earbud, the audio data is sent to the main earbud, and the business action triggered by the mobile phone and the TWS headset is completed; the establishment between the double earbud There is NFMI connection to complete the information synchronization between the two earplugs. The main earplug forwards audio data to the secondary earplug through the NFMI link with the secondary earplug.

Among them, in the monitoring scheme, forwarding scheme and NFMI scheme, because the mobile phone only establishes a Bluetooth connection with the main earbud and exchanges audio data with the main earbud; and the mobile phone does not establish a Bluetooth connection with the secondary earbud, and Audio data is not exchanged with the secondary earbuds, so these connection schemes can also be called single shot schemes.

In the dual-send solution, the mobile phone establishes a Bluetooth connection with the two earplugs of TWS respectively, so as to exchange audio data and business control data through the Bluetooth link between the two earplugs of TWS, respectively, to achieve audio data playback and business action control And other operations. The wireless connection between the two earplugs of TWS can be maintained or disconnected.

After the Bluetooth connection between the mobile phone and the TWS headset is established, audio data can be exchanged between the mobile phone and the TWS headset.

Exemplarily, the audio transmission process of audio data from the source to the sink can be seen in FIG. 5. It can be seen from FIG. 5 that the source decodes the audio data in the application (application, APP) through the audio management module (such as the audio service AudioFlinger in the Android system) to obtain the configuration information of the hardware device, set the audio parameters, etc.; after decoding The data enters buffer 1 for buffering; the audio encoder obtains audio data from buffer 1 and encodes it; the encoded audio data enters buffer 2 for buffering, which can be called Transmission data buffer; audio data in buffer 2 is sent to the destination through the channel with the destination. The destination end buffers the audio data received from the source end in the buffer 3; the audio decoder (audio decoder) takes the audio data from the buffer 3 and decodes it; the decoded audio data is buffered in the buffer 4; The decoder codec sends the data in the buffer 4 to the speaker for playback.

In the embodiments of the present application, the transmission channel between the source end and the destination end may include a low-power asynchronous connection link LEACL (also referred to as LE ACL connection, LE ACL connection, or LE ACL connection link in the following embodiments) ) And a connection-based isochronous audio stream (connected isochronous stream, CIS) connection link (also referred to as CIS link or CIS connection in the following embodiments). Among them, the LEACL link can be used to transmit control data, and the CIS link can be used to transmit audio data and response information. CIS is a point-to-multipoint isochronous (ISO) synchronous transmission mechanism based on BLE.

After establishing the LEACL connection link and the CIS connection link, the LEACL connection link and the CIS connection link exist independently and send data independently. Data can be sent simultaneously on the LEACL connection link and the CIS connection link. Sending data at the same time here does not limit the time synchronization of the LEACL connection link and the CIS connection link when sending data, but means that sending data on the LEACL connection link and sending data on the CIS connection link can be performed concurrently .

During the transmission of audio data from the source to the destination, the channel quality of the transmission channel and the amount of data to be transmitted are different, and the encoding rate and transmission rate of the audio data are also different. The technical solution provided by the embodiments of the present application can automatically and adaptively adjust the audio data encoding rate and the audio data according to factors such as the channel quality of the transmission channel and the amount of data to be transmitted without interrupting the data transmission and disconnecting the CIS link. The transmission rate, so that users can be unaware of the adjustment process of the encoding rate and the transmission rate; there is no need to disconnect the CIS link between the source end and the destination end when adjusting the encoding rate and the transmission rate, and reconfigure the relevant parameters , And then re-initiate the CIS link connection.

The coding rate can be understood as the coding rate of the audio encoder in FIG. 5. The transmission rate of audio data can be understood as the amount of audio data sent from the source end to the destination end per unit time. Increasing the transmission rate refers to increasing the amount of audio data sent from the source to the destination in a unit time; decreasing the transmission rate refers to reducing the amount of audio data sent from the source to the destination in a unit time.

Specifically, when the channel quality is poor, the coding rate and transmission rate can be reduced to ensure that there are enough retransmission time slots to improve transmission performance; when the channel quality is good, the coding rate and transmission rate can be increased to improve Audio quality; thus, the coding rate and transmission rate can be matched with the channel quality status, taking into account the transmission performance and audio quality, to achieve an adaptive balance between transmission performance and audio quality, and to ensure continuous transmission and playback of audio data.

In one embodiment, when the channel quality is poor, the coding rate can be reduced first, and then the transmission rate can be reduced; when the channel quality is good, the transmission rate can be increased first, and then the coding rate is reduced; this can make the coding rate and Before and after the transmission rate adjustment, there is sufficient transmission capacity to transmit the encoded audio data.

In the following embodiments of the present application, a dual connection is established between a mobile phone and a TWS headset, the mobile phone (ie, the first BLE Bluetooth device) is the source end of audio data, and the first earbud of the TWS headset (ie, the second BLE Bluetooth device may be TWS Any earplug of the earphone is an example of the destination end of the audio data, and the rate control method provided in the embodiment of the present application will be described.

In this method, when the first earplug is used, the mobile phone may be configured with encoding parameters (ie, the first encoding parameter), and the audio encoder of the mobile phone encodes according to the configured encoding parameters to obtain encoded audio data. The mobile phone sends the encoding parameter to the first earplug through an audio data packet, so that the first earplug can decode according to the encoding parameter.

Moreover, when the first earplug is used, the mobile phone and the first earplug can negotiate the transmission parameter of the CIS link (ie, the first transmission parameter) through the LEACL link, and establish the CIS link according to the transmission parameter. Exemplarily, the negotiation process of the transmission parameter can be referred to FIG. 6. As shown in FIG. 6, the mobile phone can set CIS group (CIS) parameters and enable CIS between the first earplug. The process may include 601. The Bluetooth host host in the mobile phone sends CIG parameter setting information (such as LE Set CIG parameters messages) to the link layer LL in the Bluetooth controller in the mobile phone, thereby transmitting the transmission parameters to the mobile phone LL (that is, the first A transmission parameter). 602. The mobile phone LL replies to the mobile phone host with the first confirmation information (for example, the command complete message). 603. The mobile phone host sends CIS creation information (such as LE Create CIS message) to the mobile phone LL. 604. The mobile phone LL replies to the mobile phone host with the second confirmation information (for example, HCI Command status message). 605. The mobile phone LL sends CIS connection request information (for example, LL_CIS_REQ message) carrying the transmission parameter to the link layer LL in the Bluetooth controller in the first earbud to request to establish a CIS connection according to the transmission parameter. 606. The first earplug LL sends CIS connection request information (for example, LECIS request message) to the Bluetooth host host in the first earplug. 607. The first earplug host replies to the first earplug LL to accept the CIS connection information (for example, LE Accept CIS message). 608. The first earplug LL replies to the first earplug host with third confirmation information (for example, HCI Command status message). 609. After the first earplug host confirms, the first earplug LL sends CIS connection response information (for example, LL_CIS_RSP message) to the mobile phone LL. 610. The mobile phone LL sends fourth confirmation information (eg, LL_CIS_IND message) to the first earplug LL. 611. The mobile phone LL sends the CIS connection established information to the mobile phone host (for example, LE CIS Established message). So far, the CIS connection link has been established between the mobile phone and the first earbud.

After the CIS link is established, the mobile phone can send the audio data encoded by the audio encoder to the first earbud through the CIS link according to the configured transmission parameters. The first earplug can receive the audio data sent by the mobile phone through the CIS link according to the configured transmission parameters and reply to the response information (for example, a positive response ACK message, a negative response NACK message, a missing MISSING message, etc.). Subsequently, the mobile phone can also determine a new encoding parameter (ie, the second encoding parameter) according to the reference parameter. The new encoding parameter is different from the previous encoding parameter, and the audio data is encoded according to the new encoding parameter, thereby increasing or decreasing the encoding rate. And, while the mobile phone sends audio data to the first earbud through the CIS link, the mobile phone and the first earbud can also negotiate a new transmission parameter (ie, the second transmission parameter) according to the reference parameter through the LE ACL link, and the new transmission The parameters are different from the previous transmission parameters in order to increase the transmission rate of audio data or reduce the transmission rate of audio data through the new transmission parameters. The mobile phone and the first earplug can automatically start new transmission parameters after negotiating new transmission parameters; or, the mobile phone and the first earplug can also negotiate the update time, and the mobile phone and the first earplug enable the new CIS link at the update time Transmission parameters. Subsequently, the mobile phone sends audio data to the first earplug through the CIS link according to the new transmission parameter, and the first earplug receives audio data sent from the mobile phone through the CIS link according to the new transmission parameter. In other words, the mobile phone and the first earplug can update the CIS transmission parameters without disconnecting the CIS, so that the updated transmission parameters are used to transmit audio data.

The reference parameter may include a channel quality parameter, and the channel quality parameter is used to indicate whether the channel quality is good or bad. For example, the channel quality parameters may include: packet loss rate (PLR), packet error rate (PER), signal-to-noise ratio (SNR), signal-to-interference ratio (signal to interference), SIR), received signal strength indication (RSSI), channel quality indication (channel quality indicator (CQI), cyclic redundancy check (cyclic redundancy check, CRC), and service quality (quality of service, Qos) One or more of the parameters, etc. The Qos parameters may include one or more of parameters such as retransmission rate, jitter, delay, throughput, and availability.

There can be a variety of audio data encoders, such as sub-band coding (SBC), advanced audio coding (AAC), aptX encoder, aptX LL (low latency aptX) encoder , AptX HD (high sound quality aptX) encoder, LDAC encoder, HWA encoder and HWA LL (low latency HWA) encoder, etc. Among them, different encoders have different encoding parameters that affect the encoding rate. For example, in an SBC encoder, the encoding parameters may include bitpool value, block length (length), subbands (subbands), number of channels, sampling rate, frame length (frame length) and allocation method (allocation method) One or more of them. For another example, in an AAC encoder, the encoding parameters may include parameters such as sampling rate and number of channels.

In addition, in encoders such as SBC and AAC, the encoding rate can also be related to the encoding bandwidth. When the encoding bandwidth is reduced (for example, the encoding bandwidth is reduced from 80 Hz to 20 kHz to 80 Hz to 10 kHz), the encoding rate can also be increased. For example, in an SBC encoder, when the number of subbands is reduced, the encoding rate can be increased. When the encoding bandwidth is increased (for example, the encoding bandwidth is extended from 80 Hz to 10 kHz to 80 Hz to 20 kHz), the encoding rate can also be reduced. For example, in an SBC encoder, when the number of subbands is increased, the coding rate can be reduced.

The following embodiments of the present application mainly use the SBC encoder as an example for description.

In SBC coding, a calculation method of the coding rate may be: the coding rate is the coding bit rate per unit time = 8 * frame length * sampling rate / number of subbands / block length; where, frame length = 4 + (4 *Number of subbands*Number of channels)/8+ceiling(Block length*Number of channels*bitpool value/8), ceiling means rounding up. In this type of encoder, one or more of bitpool value, block length, number of subbands, number of channels, sampling rate, and frame length can be adjusted to increase or decrease the encoding rate. For example, when the encoding rate needs to be increased, the mobile phone can increase one or more of the bitpool value, sampling rate, or channel number; when the encoding rate needs to be reduced, the mobile phone can reduce one of the bitpool value, sampling rate, or channel number or Multiple. Among them, the channel mode (for example, mono, two-channel or joint stereo) is different, the calculation method of the frame length is different, and the corresponding coding rate is also different. Moreover, the encoding parameters corresponding to different sound qualities (for example, middle sound qualities or high sound qualities) are also different. Exemplarily, a correspondence between different sound quality and encoding parameters can be referred to Table 1.

Table 1

There may be many transmission parameters that affect the transmission rate, and the transmission rate can be increased or decreased by adjusting the transmission parameters. For example, the transmission parameters may include burst number (BN), number of subevents (number of subevents, NSE), flush timeout (flush timeout, FT), subevent duration (subevent duration), PHY type, etc. One or more. In the time domain, audio data can be transmitted within the ISO interval (iso). Among them, NSE represents the number of sub-events in an ISO interval; BN represents the maximum number of bursts carried in each ISO interval, the content of the burst is the payload; the duration of the sub-event represents the time of each sub-event (subevent) , The burst is transmitted within the duration of the sub-event, the duration of the sub-event depends on the size of the payload (payload); FT takes the ISO interval as a unit, indicating that a burst can be transmitted within a few ISO intervals at most; the PHY type can Including air interface parameters such as transmission bandwidth and modulation method. Within the duration of a sub-event, the mobile phone can send a burst and receive response information from the first earplug, the burst is a payload, and the payload is audio data.

Exemplarily, when BN=2, NSE=4, and FT=1, a schematic diagram of data transmission may refer to FIG. 7. Among them, NSE = 4 means that each ISO interval includes 4 sub-event durations; BN = 2 means that each ISO interval carries a maximum of 2 bursts, that is, 2 payloads; FT = 1 means that a burst can be up to 1 Transmit within an ISO interval. At the refresh point of the payload k, regardless of whether the payload k is successfully received by the destination, the transmission of the payload k is stopped and the transmission of the payload k+1 is started. For the case where BN is equal to 1, the refresh point of the payload is at the end of the ISO interval. For the case where BN is greater than 1, the refresh point of the data packet corresponding to the first payload in an ISO interval is located at the end of the Nth sub-event after the start of the ISO interval; where N=FLOOR(NSE/ BN)+MOD(NSE, BN). For the data packet corresponding to the i-th payload in an ISO interval, the refresh point is located within the ISO interval, after the refresh point of the data packet corresponding to the first payload, the end point of the Mth sub-event; where, M =FLOOR(NSE/BN)*(i-1). FLOOR indicates rounding down, FLOOR(NSE/BN) indicates the value of the quotient of NSE divided by BN rounding down, and MOD(NSE, BN) indicates that NSE takes the balance of BN.

Specifically, if it is determined that the channel quality is poor according to the channel quality parameter, the mobile phone can reduce the coding rate by adjusting the encoding parameter, and the mobile phone and the first earbud can reduce the transmission rate by adjusting the transmission parameter to improve the transmission performance; if according to the channel quality If the parameter determines that the channel quality is good, the mobile phone and the first earplug can adjust the transmission parameters to increase the transmission rate, and the mobile phone can adjust the coding parameters to increase the coding rate.

That is to say, when adjusting the encoding parameters and transmission parameters to adjust the encoding rate and transmission rate, the new encoding parameters may be determined by the mobile phone, and the mobile phone may send the new encoding parameters to the first earplug through the audio data packet, so that The first earplug can be decoded according to the new encoding parameter; the new transmission parameter can be negotiated between the mobile phone and the first earplug.

Among them, the specific application scenarios are different, the order of adjusting the coding parameters and the transmission parameters is different, and the specific adjustment methods may also be different. The following describes each scenario separately.

Scenario 1. When the channel quality is good, first increase the transmission rate and then increase the coding rate.

In this scenario, the mobile phone and the first earbud can first negotiate new transmission parameters to increase the transmission rate; then, the mobile phone determines new coding parameters to increase the coding rate.

In one case, the mobile phone can actively initiate the adjustment of the transmission rate.

For example, in an embodiment, the mobile phone performs channel quality monitoring and initiates adjustment of the transmission rate according to the channel quality parameters. If the mobile phone determines that the channel quality parameter satisfies the first preset condition through channel quality monitoring, it can indicate that the channel quality is good, so the mobile phone can initiate negotiation of new transmission parameters and update time to increase the transmission rate. The mobile phone and the first earbud enable new transmission parameters at the moment of update, and then exchange data (such as audio data and response information, etc.) on the CIS link according to the new transmission parameters.

In an implementation of this embodiment, the first preset condition is that the channel quality parameter is better than a preset value. For example, the channel quality parameter includes a packet loss rate, and the first preset condition is that the packet loss rate is less than or equal to a preset value of 1. For another example, the channel quality parameters include a packet loss rate and a packet error rate. The first preset condition is that the packet loss rate is less than or equal to the preset value 1, and the packet error rate is less than or equal to the preset value 2. For another example, the channel quality parameter includes a signal-to-noise ratio, and the first preset condition is that the signal-to-noise ratio is greater than or equal to a preset value 3 (that is, a first preset value).

In another implementation of this embodiment, the first preset condition is that the channel quality parameter is optimized. For example, the channel quality parameter includes CQI, and the first preset condition is that CQI increases. For another example, the channel quality parameter includes a signal-to-interference ratio, and the first preset condition is that the amplitude of the increase in the signal-to-interference ratio is greater than or equal to the preset value 4. For another example, the channel quality parameters include CQI and jitter. The first preset condition is that the magnitude of the increase in CQI is greater than or equal to the preset value 5, and the magnitude of the decrease in jitter is greater than or equal to the preset value 6.

In a solution, if the previous channel quality parameter and the current channel quality parameter are both better than the preset value, and the current channel quality parameter is more optimized than the previous channel quality parameter (such as the difference between the two) exceeds To adjust the threshold, the coding parameters and transmission parameters are adjusted to increase the transmission rate and the coding rate; if the current channel quality parameter is not more optimized than the previous channel quality parameter, the transmission rate and coding rate are not increased. If the current channel quality parameter is worse than the preset value, but the current channel quality parameter is more optimized than the previous channel quality parameter (such as the difference between the two) exceeds the adjustment threshold, then adjust the coding parameters and transmission parameters to improve transmission Rate and encoding parameters.

In yet another implementation of this embodiment, the channel quality parameters include multiple, each channel quality parameter corresponds to its own weight, and the first preset condition is that the total score of the channel quality parameter is greater than or equal to the preset value 0 . Exemplarily, the scores of the channel quality parameters can be seen in Table 2 below. If the preset value 0 is 0.6 and the current total score is 0.8, the first preset condition is satisfied.

Table 2

When the mobile phone determines that the transmission parameters and the update time need to be negotiated according to the channel quality parameters, the mobile phone can separately initiate negotiation on the new transmission parameters and update time in different messages; or, the mobile phone can also initiate a new transmission parameter and update time in the same message. The negotiation of the transmission parameters and the update time is not limited in the embodiments of the present application.

There are various methods for the mobile phone to initiate negotiation on new transmission parameters and update time.

For example, in a technical solution of this embodiment, the mobile phone may determine new transmission parameters and update time and send to the first earplug; the first earplug sends confirmation information to the mobile phone; the mobile phone receives the confirmation of the first earplug After the information, the new transmission parameters and the update time are negotiated.

The update time may be a time after the preset current time, or may be a time after the current time determined by the mobile phone according to the feedback capability of the underlying chip. For example, the update time may be the start time of the next ISO interval after the current ISO interval.

It should be noted that the new transmission parameters are negotiated between the mobile phone and the first earbud via the LEACL link. Specifically, the mobile phone and the first earplug may respectively include a host host and a link layer LL, and the mobile phone further includes an audio encoder. Referring to FIG. 8, the mobile phone monitoring channel quality may be that the mobile phone host instructs the mobile phone LL to monitor the channel quality, and the mobile phone LL reports to the mobile phone host after determining that the first preset condition is met; or the mobile phone LL periodically detects the channel quality parameter and the channel quality The parameters are reported to the mobile phone host; the mobile phone host determines to increase the transmission rate and initiates negotiations on the transmission rate and the update time. In the negotiation process, between the mobile phone and the first earplug, the mobile phone LL and the first earplug LL exchange the negotiation information through the LL command; inside the mobile phone, the mobile phone host and the mobile phone LL exchange the negotiation information through the HCI command; Inside an earplug, the first earplug host and the first earplug LL exchange information through HCI commands. The audio encoder of the mobile phone encodes the audio data output from the audio source such as pulse code modulation (pulse code modulation (PCM) code stream), and the mobile phone host transmits the encoded data packet according to the negotiated transmission parameters.

Exemplarily, after the CIS connection is established, the process of negotiating the new transmission parameter and the update time between the mobile phone and the first earbud can be seen in FIG. 6. As shown in FIG. 6, the process may include: 612, the mobile phone host may determine new transmission parameters and update time, and send CIG parameter update information (such as LEUpdateCIGparameters message) to the mobile phone link layer LL, to the mobile phone LL transfers new transmission parameters. 613. The mobile phone LL replies to the mobile phone host with the fifth confirmation information (for example, the command complete message). 614. The mobile phone LL sends the first earplug LL CIS update request information (for example, LL_CIS_update_REQ message) carrying the new transmission parameters and the update time to request to update the established CIS connection according to the new transmission parameters. 615. The first earplug LL sends CIS update response information (for example, LL_CIS_update_RSP message) to the mobile phone LL. 616. At the update time, the mobile phone LL and the first earplug LL enable new transmission parameters. 617. The first earplug LL sends update completion information (such as a CIS_update_complete message) to the first earplug host to notify the first earplug host that the first earplug LL has received the new transmission parameter and the update time. 618. The first earbud LL sends update confirmation information (such as CIS_update_complete or HCI Command status message) to the mobile phone LL. So far, the mobile phone and the first earplug have completed the negotiation of the new transmission parameters and update time of the CIS link and the update of the new transmission parameters, and the subsequent mobile phone and the first earplug exchange audio data and audio data according to the new transmission parameters Response data.

In another solution, the update time may not be negotiated between the mobile phone and the first earbud. After the mobile phone LL sends the CIS update request message to the first earbud LL, the new transmission parameter can be automatically enabled immediately and sent to the mobile phone host Update confirmation information; after receiving the CIS update request information sent by the mobile phone LL, the first earplug LL can automatically enable new transmission parameters and send the update completion information to the first earplug host.

In another solution, the update time may not be negotiated between the mobile phone and the first earbud. After the mobile phone LL sends the CIS update request message to the first earbud LL, if it receives the confirmation from the first earbud that the CIS update request is received In response to the message, the new transmission parameter is immediately enabled; after receiving the CIS update request message sent by the mobile phone LL, the first earplug LL can automatically enable the new transmission parameter and send the update completion information to the first earplug host.

In another solution, the mobile phone and the first earbud may pre-arrange the update time. The mobile phone enables the new transmission parameter at the Mth time after sending the CIS update request message. The first earbud receives the CIS update request message K times to enable new transmission parameters. M and K are natural numbers.

After the mobile phone and the first earplug enable new transmission parameters, when there is audio data to be transmitted, the mobile phone and the first earplug may use the new transmission parameter to transmit the audio data. The moment when the mobile phone uses the new transmission parameter to send audio data and the moment when the mobile phone enables the new transmission parameter may be the same or different. For example, the mobile phone may enable new transmission parameters after sending the CIS update request information, and use the new transmission parameters to send audio data after receiving the update confirmation information sent by the first earplug. The moment when the first earplug adopts the new transmission parameter to receive the audio data may be the same as or different from the moment when the first earplug enables the new transmission parameter. For example, the first earplug may enable new transmission parameters after receiving the CIS update request information, and adopt the new transmission parameters to receive audio data after receiving the update completion information.

In the embodiments of the present application, the method for increasing the transmission rate by adjusting the transmission parameters may include adjusting the transmission parameters to increase the duty cycle of the payload or reduce the retransmission, thereby increasing the transmission rate.

There are many specific ways to increase the transmission rate by adjusting the transmission parameters. For example, when other transmission parameters are unchanged, increase BN and NSE to increase the number of bursts that can be transmitted within the ISO interval and increase the transmission rate. Exemplarily, the transmission diagram shown in FIG. 7 corresponds to BN=2, NSE=4, and FT=1, and the mobile phone transmits 2 payloads (that is, payloads 0 and 1) within the ISO interval 1. On the basis of Figure 7, if the transmission rate needs to be increased, the NSE after negotiation will increase to 6 and the BN after negotiation will increase to 3, which means that the transmission interval within the ISO interval The number of hair increases to 3. FIG. 9 is a transmission schematic diagram based on the adjusted new transmission parameters. The mobile phone can transmit 3 payloads (that is,

payloads

2, 3, and 4) within the ISO interval 2. Furthermore, referring to FIG. 9, the mobile phone and the first earplug can simultaneously enable new transmission parameters at the negotiated update time (that is, time 1), and transmit audio data and response information according to the new transmission parameters.

For another example, when other transmission parameters are unchanged, increase BN (where BN is less than NSE) to increase the number of bursts that can be transmitted within the ISO interval and increase the transmission rate. Exemplarily, on the basis of FIG. 7, when the BN increases to 3, the transmission schematic diagram based on the new transmission parameter may refer to FIG. 10. In Figure 10, the mobile phone can transmit 3 payloads (ie,

payloads

2, 3, and 4) within the ISO interval 2.

As another example, when other transmission parameters are unchanged, the ratio of BN to NSE is increased to transmit a larger number of bursts within the ISO interval and increase the transmission rate.

As another example, adjust the type of PHY to increase the transmission bandwidth, thereby increasing the transmission rate.

For another example, when other transmission parameters are unchanged, FT is reduced (where FT is greater than or equal to 1) to reduce the time taken for retransmission, so that more audio data can be transmitted.

As another example, when other transmission parameters remain unchanged, increasing the duration of a sub-event, multiple payloads can be aggregated and transmitted within a sub-event duration, or the size of the payload can be increased to increase the transmittable within the sub-event duration The length of the payload, thereby increasing the number of payloads that can be transmitted within the duration of the sub-event and increasing the transmission rate. Exemplarily, on the basis of FIG. 7, if the duration of a sub-event increases to twice, then two payloads can be aggregated within a sub-event duration. For a transmission schematic diagram corresponding to the new transmission parameter, see FIG. 11. In FIG. 11, two payloads (for example, payload 2 and payload 3) can be sent within one sub-event duration within the ISO interval 2.

As another example, increase BN, increase BN and NSE, increase the ratio of BN to NSE, increase the duration of sub-events, reduce FT, and increase any combination of transmission bandwidth.

In addition, if the first earplug cannot accept the new transmission parameter sent by the mobile phone, the request for updating the transmission parameter of the mobile phone can be rejected; or, the first earplug can notify the mobile phone that it cannot accept it, and the mobile phone can re-determine the new transmission parameter and send Confirm the first earbud.

In another technical solution of this embodiment, the mobile phone may determine the candidate value and update time of the new transmission parameter and send it to the first earplug. The first earplug determines the target value of the new transmission parameter from the values to be selected and sends it to the mobile phone. After receiving the target value sent by the first earplug, the mobile phone sends a confirmation message to the first earplug to realize the new transmission parameter and update time Negotiate. Exemplarily, the candidate value of the new transmission parameter may be candidate value 1: BN=3, NSE=4, FT=1; candidate value 2: BN=3, NSE=6, FT=1. Among them, the transmission parameters not involved in the value to be selected, such as PHY type, sub-event duration, etc., do not change by default.

In yet another technical solution of this embodiment, the mobile phone may determine the maximum and minimum values of the new transmission parameter and the update time, and send it to the first earplug. The first earplug determines the target value according to the maximum and minimum value range of the new transmission parameter and sends it to the mobile phone. After receiving the target value sent by the first earplug, the mobile phone sends a confirmation message to the first earplug, so as to implement negotiation of new transmission parameters and update time.

In another technical solution of this embodiment, the mobile phone may determine the reference value of the new transmission parameter and the update time, and send it to the first earplug. The first earplug determines a target value according to the reference value of the new transmission parameter (the target value may be the same as or different from the reference value) and sends it to the mobile phone. After receiving the target value sent by the first earplug, the mobile phone sends a confirmation message to the first earplug, so as to implement negotiation of new transmission parameters and update time.

In yet another technical solution of this embodiment, the mobile phone notifies the first earplug to start negotiating transmission parameters; the first earplug sends the new transmission parameter and update time to the mobile phone. The mobile phone replies with a confirmation message to the first earbud to implement negotiation of new transmission parameters and update time.

In another technical solution of this embodiment, the mobile phone notifies the first earplug to start negotiating new transmission parameters; the first earplug sends a determination message to the mobile phone. The mobile phone determines the new transmission parameter and update time and sends it to the first earplug. After receiving the confirmation message returned by the first earplug, the mobile phone implements negotiation of new transmission parameters and update time.

In yet another technical solution of this embodiment, the mobile phone can determine the new transmission parameter and send it to the first earplug; after receiving the confirmation message of the first earplug, implement the negotiation of the new transmission parameter. Then, the mobile phone can also determine the update time and send it to the first earplug; after receiving the confirmation message of the first earplug, the negotiation of the update time is realized.

It should be noted that the above description of the method for the mobile phone to initiate negotiation of new transmission parameters and update time is only an example, and there may be other negotiation methods, which are not limited in the embodiments of the present application.

In another embodiment, the first earplug monitors the channel quality and sends the channel quality parameter to the mobile phone, and then the mobile phone initiates the adjustment of the transmission rate, that is, initiates a negotiation with the first earplug on the new transmission parameters and update time to Increase the transmission rate. The specific negotiation process of the new transmission parameter and the update time can be referred to the description of the above embodiment, for example, it can be the CIS transmission parameter update process in FIG. 6, which will not be repeated in subsequent embodiments.

In another embodiment, the mobile phone instructs the first earbud to monitor the channel quality. The first earbud monitors the channel quality according to the instructions of the mobile phone and sends the channel quality parameter to the mobile phone. The mobile phone initiates the adjustment of the transmission rate according to the channel quality parameter. To increase the transmission rate.

In another embodiment, the mobile phone instructs the first earplug to monitor the channel quality, and the first earplug monitors the channel quality according to the instruction of the mobile phone. The first earplug may send the mobile phone to the mobile phone when it is determined that the channel quality parameter meets the first preset condition The first information; the mobile phone initiates the adjustment of the transmission rate according to the first information, that is, initiates a negotiation with the first earplug for new transmission parameters and update time to increase the transmission rate.

In another case, the first earplug may actively initiate adjustment of the transmission rate.

In an embodiment, the first earbud performs channel quality monitoring, or the first earbud performs channel quality monitoring after receiving the indication from the mobile phone, and initiates transmission rate adjustment according to the channel quality parameter. If the first earplug determines that the channel quality parameter meets the first preset condition, it initiates negotiation of a new transmission parameter and update time to increase the transmission rate.

In another embodiment, the mobile phone performs channel quality monitoring and sends the channel quality parameter to the first earplug, and then the first earplug initiates adjustment of the transmission rate according to the channel quality parameter.

In another embodiment, the first earplug instructs the mobile phone to monitor the channel quality, the mobile phone performs channel quality monitoring according to the instruction of the first earplug, and sends the channel quality parameter to the first earplug, and then the first earplug initiates according to the channel quality parameter Transmission rate adjustment.

In another embodiment, the first earplug instructs the mobile phone to monitor channel quality, and the mobile phone performs channel quality monitoring according to the indication of the first earplug. The mobile phone may send the first earplug to the first earplug when it is determined that the channel quality parameter meets the first preset condition The first information; the first earplug initiates negotiation of new transmission parameters and update moments based on the first information to increase the transmission rate.

It should be noted that, in accordance with the solution shown in FIG. 8, in other solutions, the mobile phone and the first earbud can still negotiate new transmission parameters and update times through the host, LL, HCI commands, and LL commands. The application examples will not repeat them here.

It should also be noted that, during the negotiation of the above transmission parameters, the transmission parameters interacted by the mobile phone and the first earbud may include only the transmission parameters that have changed, or may include the transmission parameters that have not changed. limited. For example, the changed transmission parameters are BN, and the transmission parameters such as NSE and FT have not changed; then in one way, the LE Update Update CIG parameters and LL_CIS_update_REQ messages in Figure 6 include the changed BN, excluding NSE and FT, etc. Other transmission parameters that have not changed; in another way, the LE Update CIG parameters message and the LL_CIS_update_REQ message in FIG. 6 include the changed BN, and other transmission parameters such as NSE and FT that have not changed.

When the channel quality parameter satisfies the above-mentioned first preset condition, after the mobile phone and the first earbud negotiate new transmission parameters, the mobile phone may also determine new coding parameters to increase the coding rate. That is to say, if the channel quality parameter meets the first preset condition, it can indicate that the channel quality is good, so the mobile phone can determine the new encoding parameter to increase the encoding rate; and initiate the negotiation of the new transmission parameter and update time to improve Transmission rate. In addition, the mobile phone can also carry the new encoding parameter in the audio data packet and send it to the first earplug. After receiving the audio data packet, the first earplug decodes according to the encoding parameter. Exemplarily, referring to FIG. 8, after satisfying the first preset condition and adjusting the transmission parameters, the mobile phone may determine new encoding parameters to increase the encoding rate. As mentioned above, there are many ways to increase the encoding rate by adjusting the encoding parameters. For example, in the case of mono shown in Table 1, the bitpool value can be increased from 18 to 29 when the sampling rate, number of subbands, number of channels, block length, allocation method and other parameters remain unchanged, thereby encoding The rate is increased from 132kb/s to 198kb/s. For another example, in the case of the joint stereo shown in Table 1, when the parameters such as the number of subbands, the number of channels, the block length, and the allocation method remain unchanged, the sampling rate can be increased from 44.1kHz to 48kHz, and the bitpool value can be increased from 35. It is 51, which increases the encoding rate from 229kb/s to 345kb/s.

In a specific example, for the SBC encoder, the mobile phone can determine the target coding rate to be adopted according to the packet loss rate, so as to adjust the bitpool corresponding to the target coding rate to achieve the mobile phone's coding rate as the target coding rate. For example, referring to Table 3, the correspondence between the packet loss rate 1, the preset value 1, the target encoding rate, and the target bitpool value is set on the mobile phone. When the packet loss rate is less than or equal to the preset value 1, the channel quality is better, and the mobile phone can adjust the bitpool value to the corresponding target bipool value of 53, thereby encoding the audio data with a higher target coding rate of 328kb/s; When the packet loss rate is greater than the preset value 1, the channel quality is poor, and the mobile phone can adjust the Bitpool value to the corresponding target bitpool value of 35, thereby encoding the audio data with a lower target encoding rate of 229 kb/s.

table 3

第一预设条件First preset condition	目标编码速率Target coding rate	Bipool值Bipool value
丢包率小于或者等于预设值1Packet loss rate is less than or equal to the preset value 1	328kb/s328kb/s	5353
丢包率大于预设值1Packet loss rate is greater than the preset value 1	229kb/s229kb/s	3535
……	……	……

In this embodiment of the present application, other specific methods for increasing the encoding rate by adjusting encoding parameters are not described in detail. Then, the audio encoder of the mobile phone encodes the audio data according to the new encoding parameters.

After determining the new encoding parameter, the mobile phone can send the new encoding parameter to the first earplug through the audio data packet, so that the first earplug can decode according to the new encoding parameter.

The above is mainly explained by taking the same condition that the channel quality parameter needs to be met when increasing the coding rate and increasing the transmission rate as examples. In other embodiments, the conditions that the channel quality parameters need to meet when increasing the coding rate and increasing the transmission rate may also be different. For example, the mobile phone may monitor channel quality, or the mobile phone may instruct the first earbud to perform channel quality monitoring. When the mobile phone itself determines or determines that the channel quality parameter satisfies the first preset condition according to the information reported by the first earplug, the transmission rate may be increased. For a specific method for increasing the transmission rate, reference may be made to the related description in the above embodiments, and details are not described here. When the mobile phone itself determines or determines that the channel quality parameter satisfies the third preset condition according to the information reported by the first earbud, it may indicate that the channel quality is good, so that a new coding parameter may be determined to increase the coding rate. The third preset condition is different from the first preset condition. For example, the first preset condition may be that the packet loss rate is less than or equal to the preset value 1, and the third preset condition may be that the packet loss rate is less than or equal to the preset value 9, and the preset value 9 is not equal to the preset value 1. For the specific way of adjusting the transmission parameters and the way of encoding the parameters, reference may be made to the descriptions in the above embodiments, which will not be repeated here.

Scenario 2. When the channel quality is poor, first reduce the coding rate, and then reduce the transmission rate.

In this scenario, the mobile phone can first determine new encoding parameters to reduce the encoding rate; then, the mobile phone and the first earbud can negotiate new transmission parameters to reduce the transmission rate.

Similar to the scenario 1 where the mobile phone increases the transmission rate and the encoding rate when it determines that the first preset condition is met, in scenario 2 the mobile phone can monitor the channel quality, or the mobile phone can instruct the first earbud to perform channel quality monitoring. When the mobile phone itself determines or determines that the channel quality parameter satisfies the second preset condition according to the information reported by the first earplug, it may indicate that the channel quality is poor, and thus a new coding parameter may be determined to reduce the coding rate.

Corresponding to the first preset condition, in one embodiment, the second preset condition is that the channel quality parameter is worse than the preset value. For example, the channel quality parameter includes a packet loss rate, and the first preset condition is that the packet loss rate is greater than or equal to the preset value 11, and the preset value 11 is greater than or equal to the preset value 1. For another example, the channel quality parameters include a packet loss rate and a packet error rate. The first preset condition is that the packet loss rate is greater than or equal to the preset value 11, and the packet error rate is greater than or equal to the preset value 12, and the preset value 12 is greater than or Equal to the preset value 2. For another example, the channel quality parameter includes a signal-to-noise ratio, the first preset condition is that the signal-to-noise ratio is less than or equal to a preset value 13 (that is, a second preset value), and the preset value 13 is less than or equal to the preset value 3.

In another embodiment, the second preset condition is that the channel quality parameter becomes worse. For example, the channel quality parameter includes COI, and the first preset condition is that the CQI decreases. For another example, the channel quality parameter includes a signal-to-interference ratio, and the first preset condition is that the decrease of the signal-to-interference ratio is greater than or equal to the preset value 14. For another example, the channel quality parameters include CQI and jitter. The first preset condition is that the magnitude of the decrease in CQI is greater than or equal to the preset value 15, and the magnitude of the increase in jitter is greater than or equal to the preset value 16.

In another embodiment, there are multiple channel quality parameters, each channel quality parameter corresponds to its own weight, and the second preset condition is that the total score of the channel quality parameter is less than the preset value of 10. Exemplarily, the score of the channel quality parameter may refer to Table 1, and the preset value 10 may be 0.5.

Exemplarily, referring to FIG. 12, the mobile phone host instructs the mobile phone LL to monitor the channel quality. After determining that the second preset condition is met, the mobile phone LL reports to the mobile phone host, and the mobile phone host determines new encoding parameters to reduce the encoding rate. As mentioned above, there are many ways to reduce the encoding rate by adjusting the encoding parameters. For example, in the case of mono, when the parameters such as the sampling rate, the number of subbands, the number of channels, the block length, and the allocation method remain unchanged, Mobile phones can reduce the bitpool value from 18 to 16 to reduce the encoding rate. In this embodiment of the present application, other specific methods for reducing the encoding rate by adjusting encoding parameters are not described in detail.

If the mobile phone determines that the channel quality parameter meets the second preset condition through channel quality monitoring, it may indicate that the channel quality is poor, so the mobile phone may initiate negotiation of new transmission parameters and update time to reduce the transmission rate. Exemplarily, referring to FIG. 12, the mobile phone initiates negotiation of new transmission parameters and update time to reduce the transmission rate. The mobile phone and the first earbud enable new transmission parameters at the moment of update, and then exchange data (such as audio data and response information, etc.) on the CIS link according to the new transmission parameters.

In the embodiments of the present application, the method of reducing the transmission rate by adjusting the transmission parameters may include adjusting the transmission parameters to reduce the duty cycle of the payload or increase the retransmission, thereby reducing the transmission rate.

There are many specific methods for reducing the transmission rate by adjusting transmission parameters. For example, when other transmission parameters are unchanged, reduce BN (where BN is less than NSE) to reduce the number of bursts that can be transmitted within the ISO interval and the transmission rate. Exemplarily, on the basis of FIG. 7, when the BN is reduced to 1, the transmission schematic diagram based on the new transmission parameter can be seen in FIG. 13. In Fig. 13, only one payload can be transmitted within ISO interval 2.

For another example, under the condition that other transmission parameters remain unchanged, reduce BN and NSE to reduce the number of bursts that can be transmitted within the ISO interval and reduce the transmission rate.

As another example, under the condition that other transmission parameters remain unchanged, the ratio of BN to NSE is reduced to transmit a smaller number of bursts within the ISO interval, reducing the transmission rate.

As another example, adjust the type of PHY to reduce the transmission bandwidth, thereby reducing the transmission rate.

For another example, when other transmission parameters are unchanged, increase FT (where FT is greater than or equal to 1) to increase the time available for retransmission, thereby reducing the amount of audio data that can be transmitted and reducing the transmission rate. Exemplarily, on the basis of FIG. 7, when the FT increases to 2, the transmission schematic diagram based on the new transmission parameter can be seen in FIG. 14. In FIG. 14, the refresh point of the payload 2 started to be transmitted in the ISO interval 2 is within the ISO interval 3, so if the payload 2 is not successfully received within the ISO interval 2, the retransmission can continue until the ISO interval 3 Within the refresh point, thereby reducing the time to transmit other payloads.

As another example, under the condition that other transmission parameters remain unchanged, the duration of the sub-event is reduced to reduce the length of time that the payload can be transmitted and the transmission rate.

As another example, reduce BN, decrease BN and NSE, decrease the ratio of BN to NSE, decrease the duration of sub-events, increase FT, and reduce any combination of transmission bandwidths.

In a specific example of adjusting the encoding rate and the transmission rate, referring to FIG. 15, the mobile phone side (that is, the source end) includes an audio application, an encoder, a rate adjustment module, a channel quality monitoring module, a protocol stack, and a controller. The first earbud side (that is, the destination end) includes a controller, a protocol stack, a decoder, and an analog output module. The channel quality monitoring module can be implemented through the retransmission rate or other Qos indicators reported by the controller. When the channel quality is lower than the threshold, the channel quality is poor. The rate adjustment module can first adjust the Bluetooth encoder to reduce its encoding rate. For example, the SBC's bitpool value is changed from 53 to 35, and the encoding rate is reduced from 328kbps to 229kbps. Then, the rate adjustment module controls the protocol stack to update the transmission parameters of the CIS to adapt to the change in the encoding rate. The protocol stack sends the above HCI command (such as LE Update CIG parameters message) to the controller, and then the controller sends the command (such as The above LL_CIS_update_REQ message) adjusts the transmission parameters of the CIS to the opposite end. For example, the transmission parameters of the original CIS may include: Interval=20ms, NSE=8, BN=2, and the new transmission parameters of the updated CIS may include: Interval=20ms, NSE=8, BN=1. The purpose of updating the CIS transmission parameters is to reduce the throughput of the actual air interface download technology (OTA) and reduce the transmission rate when the channel quality deteriorates, so that each packet of data has more opportunities for retransmission, making The destination can correctly receive the data packet, thereby improving the audio quality.

The above is mainly explained by taking the same condition that the channel quality parameter needs to be met when reducing the coding rate and the transmission rate as examples. In other embodiments, the conditions that the channel quality parameters need to meet when reducing the coding rate and the transmission rate may also be different. For example, when the channel quality parameter satisfies the second preset condition, the coding rate is reduced; when the fourth preset condition is met, the transmission rate is reduced.

In some other embodiments, the mobile phone may adjust the encoding parameters and the transmission parameters separately according to different scenarios and adjustment orders.

Among them, for the adjustment of the encoding parameters, the mobile phone may monitor the channel quality, or the mobile phone may instruct the first earbud to perform channel quality monitoring. When the mobile phone itself determines or determines that the channel quality parameter meets the second preset condition according to the information reported by the first earplug, the encoding parameter is adjusted to increase or decrease the encoding rate.

For the adjustment of the transmission parameters, the mobile phone and the first earplug can adjust the transmission parameters in the manner described in scenario 1, so as to increase the transmission rate; correspondingly, the mobile phone and the first earplug can also adjust the transmission parameters in a similar manner, thereby Reduce the transmission rate. For example, the mobile phone monitors the channel quality and initiates the adjustment of the transmission rate according to the channel quality parameters. If the mobile phone determines that the channel quality parameters meet the first preset condition through channel quality monitoring, it can indicate that the channel quality is good, so the mobile phone can determine the new transmission parameters and update time, and send it to the first earbud; Send confirmation information; after receiving the confirmation information of the first earplug, the mobile phone implements negotiation of new transmission parameters and update time to improve the transmission rate. If the mobile phone determines that the channel quality parameter meets the second preset condition through channel quality monitoring, it can indicate that the channel quality is poor, so the mobile phone can determine the new transmission parameters and update time, and send it to the first earbud; Send confirmation information; after receiving the confirmation information of the first earplug, the mobile phone implements the negotiation of new transmission parameters and update time to reduce the transmission rate.

For another example, the mobile phone instructs the first earplug to monitor channel quality. The first earplug monitors the channel quality according to the instructions of the mobile phone. The first earplug may send the first information to the mobile phone when it is determined that the channel quality parameter meets the first preset condition; the mobile phone initiates negotiation of new transmission parameters and update time according to the first information to increase the transmission rate. The first earplug may send second information to the mobile phone when it is determined that the channel quality parameter meets the second preset condition; the mobile phone initiates negotiation of new transmission parameters and update time according to the second information to reduce the transmission rate.

In addition, in other embodiments, different transmission parameters and coding parameters can be negotiated between the mobile phone and the first earbud according to the quality of the channel quality. For example, the better the channel quality, the higher the transmission rate corresponding to the new transmission parameter negotiated between the mobile phone and the first earbud, and the higher the encoding rate corresponding to the encoding parameter determined by the mobile phone; the worse the channel quality, the mobile phone and the first earbud The lower the transmission rate corresponding to the new transmission parameter negotiated between, the lower the coding rate corresponding to the new coding parameter determined by the mobile phone. For example, the channel quality parameter includes the packet loss rate. If the packet loss rate is less than or equal to the preset value 1, the new transmission parameter negotiated between the mobile phone and the first earbud is transmission parameter 1, and the new encoding parameter determined by the mobile phone Is encoding parameter 1. If the packet loss rate is less than or equal to the preset value of 17, the new transmission parameter negotiated between the mobile phone and the first earbud is transmission parameter 2, and the new encoding parameter determined by the mobile phone is encoding parameter 2. The preset value 17 is smaller than the preset value 1. The smaller the packet loss rate, the better the channel quality. The transmission rate corresponding to transmission parameter 2 is higher than the transmission rate corresponding to transmission parameter 1; the coding rate corresponding to coding parameter 2 is higher than the coding rate corresponding to coding parameter 1. In one embodiment, the channel quality may include multiple gears, the higher the gear, the better the channel quality; and the higher the gear, the transmission rate corresponding to the new transmission parameter negotiated between the mobile phone and the first earbud The higher the transmission rate corresponding to the new encoding parameter determined by the mobile phone.

In other embodiments, different transmission parameters and coding parameters can be negotiated between the mobile phone and the first earbud according to the amplitude of channel quality increase or decrease. For example, the greater the improvement in channel quality, the higher the transmission rate corresponding to the transmission parameter negotiated between the mobile phone and the first earbud, and the higher the encoding rate corresponding to the encoding parameter determined by the mobile phone; the greater the reduction in channel quality, the mobile phone The lower the transmission rate corresponding to the new transmission parameter negotiated with the first earbud, the lower the encoding rate corresponding to the encoding parameter determined by the mobile phone. For example, the channel quality parameter includes the packet loss rate. If the decrease rate of the packet loss rate is greater than or equal to the preset value 18, the new transmission parameter negotiated between the mobile phone and the first earbud is transmission parameter 3, which is determined by the mobile phone The new encoding parameter is encoding parameter 3; if the smaller packet loss rate is greater than or equal to the preset value 19, the new transmission parameter negotiated between the mobile phone and the first earbud is transmission parameter 4, the new encoding determined by the mobile phone The parameter is encoding parameter 4. Among them, the preset value 19 is less than the preset value 18, the smaller the reduction of the packet loss rate indicates the greater the improvement of the channel quality, the transmission rate corresponding to the transmission parameter 4 is higher than the transmission rate corresponding to the transmission parameter 3, and the encoding parameter 4 The corresponding encoding rate is higher than the encoding rate corresponding to encoding parameter 3. In one embodiment, the amplitude of channel quality improvement may include multiple gears, the higher the gear, the greater the amplitude of channel quality improvement; and the higher the gear, the new negotiated between the mobile phone and the first earbud The higher the transmission rate corresponding to the transmission parameter, the higher the coding rate corresponding to the new coding parameter determined by the mobile phone. The channel quality reduction can also include multiple gears. The higher the gear, the greater the reduction in channel quality; and the higher the gear, the lower the transmission rate corresponding to the transmission parameters negotiated between the mobile phone and the first earbud. , The lower the encoding rate corresponding to the new encoding parameter determined by the mobile phone.

In addition, the transmission parameters may also include multiple gears. The transmission parameters of different gears respectively correspond to different transmission rates; and the higher the gear of the transmission parameter, the higher the corresponding transmission rate. For example, the transmission parameter corresponding to the current CIS link is the transmission parameter corresponding to the gear i; when the transmission rate needs to be increased, the mobile phone can send the transmission parameter of the gear on the gear i to the first earbud; when the transmission rate needs to be reduced , The mobile phone can send the transmission parameter of the next gear of gear i to the first earplug. Exemplarily, the correspondence between the gear, the transmission parameter, the coding parameter and the transmission rate can be referred to in Table 4 below.

Table 4

In addition, in other embodiments, the encoding parameter may also be determined through negotiation between the mobile phone and the first earplug. For example, the mobile phone notifies the first earplug, the first earplug sends the range of coding parameters to the mobile phone, the mobile phone determines the target coding parameter according to the range of the coding parameter, and sends the target coding parameter to the first earplug. After confirming the message, the negotiation of encoding parameters is realized. Specifically, the negotiation process of the encoding parameter between the mobile phone and the first earplug can be analogized to the negotiation process of the transmission parameter, which will not be repeated here.

In other embodiments, the above reference parameter may include the amount of data to be transmitted. The amount of data to be transmitted may be the amount of audio data that has been encoded in the buffer 2 in FIG. 5 and has not been transmitted. In one solution, when the amount of data to be transmitted is greater than or equal to the first preset threshold, it may indicate that the transmission rate is low or the coding rate is high, and the data to be transmitted has accumulated, so the transmission rate may be increased and/or the coding may be reduced Rate to prevent buffer 2 from overflowing. In another solution, when the amount of data to be transmitted is greater than or equal to the first preset threshold, the channel quality may be poor, so that the data to be transmitted has accumulated, so the coding rate and transmission rate may be reduced, so that the data packet has More retransmission opportunities enable the destination to receive data packets correctly, thereby improving audio quality. In yet another solution, when the amount of data to be transmitted is less than or equal to the second preset threshold, it may indicate that the transmission rate is high or the coding rate is low, and the amount of data to be transmitted is small, so the transmission rate may be reduced and/or increased Encoding rate. In another solution, when the amount of data to be transmitted is less than or equal to the second preset threshold, there is less data to be transmitted, and the channel quality may be better. Therefore, the coding rate and the transmission rate may be increased, and the transmission performance may be improved. The second preset threshold is less than the first preset threshold, for example, the first preset threshold may be 80%, and the second preset threshold may be 20%. The first preset threshold may be the waterline 1 in the buffer 2 and the second preset threshold may be the waterline 2 in the buffer 2; the second preset threshold may be less than or equal to the first preset threshold.

It should be noted that, according to the above description, when the amount of data to be transmitted is greater than or equal to the first preset threshold, the transmission rate can be reduced or the transmission rate can be increased, but subject to the existing technology, it is more feasible to reduce the transmission rate.

In a specific example of adjusting the encoding rate, the encoding rate of multiple gears (such as the gears shown in Table 4) is set on the mobile phone. If the amount of data to be transmitted is greater than or equal to the first preset threshold, and the encoding rate needs to be reduced, the mobile phone can reduce the encoding rate to the lowest gear (eg, gear 1); then, the mobile phone can periodically detect the size of the quantity to be transmitted If the amount of data to be transmitted is still greater than or equal to the first preset threshold, the mobile phone can continue to use the encoding rate of the lowest gear; if the amount of data to be transmitted is less than the first preset threshold, the mobile phone can increase the encoding rate by one file Bit.

If the amount of data to be transmitted is less than or equal to the second preset threshold, and the encoding rate needs to be increased, the mobile phone can increase the encoding rate to the highest gear; then, the mobile phone can periodically detect the size of the amount to be transmitted, if the amount of data to be transmitted If it is still less than or equal to the second preset threshold, the mobile phone can continue to use the highest encoding rate; if the amount of data to be transmitted is greater than the second preset threshold, the mobile phone can reduce the encoding rate by one gear.

It can be understood that, similar to the coding parameters of multiple gears, there may be transmission parameters of multiple gears on the mobile phone, and the mobile phone may also adjust the transmission rate through the transmission parameters of multiple gears, which will not be repeated here.

In a specific example of adjusting the encoding rate and the transmission rate, referring to FIG. 16, the mobile phone side includes an audio application, an encoder, a rate adjustment module, a sending queue, a queue monitoring module, a protocol stack, and a controller. The first earbud side includes a controller, a protocol stack, a decoder and an analog output module. When the queue monitoring module determines that the sending queue exceeds waterline 1, the amount of data to be transmitted is greater than or equal to the first preset threshold, and the channel quality may be poor. The rate adjustment module may first adjust the Bluetooth encoder to reduce its encoding rate, for example, modify The bitpool value of SBC is changed from 53 to 35, and the encoding rate is reduced from 328kbps to 229kbps. Then, the rate adjustment module controls the protocol stack to update the transmission parameters of the CIS to adapt to the change in the encoding rate. The protocol stack sends the above HCI command (such as LE Update CIG parameters message) to the controller, and then the controller sends the command (such as The above LL_CIS_update_REQ message) adjusts the transmission parameters of the CIS to the peer. For example, the transmission parameters of the original CIS may include: Interval=20ms, NSE=8, BN=2, and the new transmission parameters of the updated CIS may include: Interval=20ms, NSE=8, BN=1. The purpose of updating the CIS transmission parameters is to reduce the throughput of the actual air interface download technology (OTA) and reduce the transmission rate when the channel quality deteriorates, so that each packet of data has more opportunities for retransmission, making The destination can correctly receive the data packet, thereby improving the audio quality.

Conversely, when the queue monitoring module determines that the sending queue is below the waterline 2, the amount of data to be transmitted is less than or equal to the second preset threshold, the channel quality may be better, and the rate adjustment module may first adjust the transmission parameters to increase the transmission rate. Then adjust the encoding parameters to increase the encoding rate, so that the transmission rate and the encoding rate are adapted, which will not be repeated here.

In another solution, a preset mapping relationship between the amount of data to be transmitted and encoding parameters and transmission parameters is stored on the mobile phone. If the data volume of the encoded audio data to be transmitted is greater than or equal to the preset threshold value 1, the mobile phone determines the new transmission parameter according to the mapping relationship between the data volume to be transmitted and the preset data volume to be transmitted and the encoding parameter and the transmission parameter, Therefore, the rate of audio data encoding using the new encoding parameters is lower than the rate of audio data encoding using the original encoding parameters, and the transmission rate of audio data transmitted using the new transmission parameters is lower than the transmission rate using the original transmission parameters. If the data volume of the encoded audio data to be transmitted is less than or equal to the preset threshold 2, the mobile phone determines new transmission parameters according to the mapping relationship between the data volume to be transmitted and the preset data volume to be transmitted and the encoding parameter and the transmission parameter, The rate of audio data encoding using the new encoding parameters is greater than the rate of audio data encoding using the original encoding parameters, and the transmission rate of audio data transmitted using the new transmission parameters is greater than the transmission rate using the original transmission parameters.

In other embodiments, the above reference parameters may include channel quality parameters and the amount of data to be transmitted. In an embodiment, when the amount of data to be transmitted is greater than or equal to the third preset threshold, and the channel quality parameter meets the situation described in the foregoing embodiment where the transmission rate and coding rate need to be increased, the method described in the foregoing embodiment may be used Adjust the transmission parameters and encoding parameters to increase the transmission rate and encoding rate. In another embodiment, when the amount of data to be transmitted is less than the third preset threshold, and the channel quality parameter satisfies the situation described in the above embodiment where the coding rate and transmission rate need to be reduced, the method described in the above embodiment may be used to adjust Coding parameters and transmission parameters, thereby reducing the coding rate and transmission rate. In another embodiment, when the amount of data to be transmitted is less than the third preset threshold, and the channel quality parameter satisfies the situation described in the above embodiment where the transmission rate and coding rate need to be increased, the transmission parameter and coding parameter may not be adjusted, Never increase the transmission rate and coding rate. In another embodiment, when the amount of data to be transmitted is greater than or equal to the third preset threshold, and the channel quality parameter satisfies the situation described in the foregoing embodiment where the coding rate and transmission rate need to be reduced, the transmission parameter may not be adjusted, thereby Does not reduce the coding rate and transmission rate.

It should also be noted that the above description is based on the example that the mobile phone adjusts the encoding rate by adjusting the encoding parameters of the encoder used. In other embodiments, the encoder used by the mobile phone may also include different encoding modes, and different encoding modes may correspond to different encoding rates. The mobile phone may also adjust the encoding rate by switching between different encoding modes. For example, in a division manner, the HWA encoder may include a high-speed encoding mode, a medium-speed encoding mode, and a low-speed encoding mode. If the current coding mode is medium speed coding mode, when it is determined that the coding rate needs to be increased according to the above reference parameters, it can be switched to the high speed coding mode; when it is determined that the coding rate needs to be reduced according to the above reference parameters, it can be switched to the low speed coding mode . In addition, the mobile phone can also notify the first earplug of the current encoding mode in the audio data packet, so that the first earplug uses the corresponding decoding method to decode.

In other embodiments, the mobile phone may further include a plurality of different encoders. Different encoders may correspond to different encoding rates, and the mobile phone may also adjust the encoding rate by switching different encoders. For example, in a division manner, the encoders in the mobile phone may include three types of encoders with high sound quality, medium sound quality, and low delay. High-quality encoders can include LDAC encoders, aptX HD encoders, HWA encoders, etc.; mid-quality encoders can include SBC encoders, AAC encoders, aptX encoders, etc.; low-latency encoders can include aptX LL encoding Encoder, HWA LL encoder, etc. If the current encoder is a mid-sound quality encoder, such as an SBC encoder, when it is determined that the encoding rate needs to be increased according to the above reference parameters, you can switch to a high-sound quality encoder, such as aptX HD encoder; when based on the above reference parameters When it is determined that the encoding rate needs to be reduced, you can switch to a low-latency encoder, such as the aptX LL encoder. After switching the encoder, the mobile phone can also notify the first earplug of the new encoder after the switch via the control signaling on the LEACL link, so that the first earplug uses the corresponding decoding method to decode.

It should be noted that, in the embodiments of the present application, there may be multiple strategies for the mobile phone to adjust the coding rate and the transmission rate. For example, the mobile phone can adjust the encoding rate and transmission rate using a preset rate adjustment method. As another example, there are multiple rate adjustment methods preset on the mobile phone, and the mobile phone can randomly select one of them to adjust the encoding rate and the transmission rate. For another example, the correspondence between the preset conditions and the rate adjustment mode can be stored on the mobile phone, and the mobile phone can adjust the encoding rate and the transmission rate by using the corresponding rate adjustment mode when a certain preset condition is met. As another example, when adjusting the encoding rate, the mobile phone can adjust a different encoding parameter to increase or decrease the encoding rate each time; when adjusting the transmission rate, the mobile phone can adjust a different transmission rate to increase or decrease the transmission rate each time . For another example, when the channel quality is good, the mobile phone can adjust fewer coding parameters and transmission parameters to improve the coding rate and transmission rate; when the channel quality is very good, the mobile phone can adjust more coding parameters and transmission parameters to Increase the coding rate and transmission rate; correspondingly, when the channel quality is poor, the mobile phone can adjust fewer types of coding parameters and transmission parameters to reduce the coding rate and transmission rate; when the channel quality is very poor, the mobile phone can adjust more types Encoding parameters and transmission parameters to reduce the encoding rate and transmission rate. Alternatively, the mobile phone can adjust one or more encoding parameters and transmission parameters in a preset order or randomly at a time; the adjustment process can be dynamic adjustment, each time the parameters are adjusted according to a preset step size, and the test is continued after the adjustment Parameters, and decide whether to continue to adjust and how to adjust according to the test results. Alternatively, the mobile phone may refer to the existing rate adjustment strategy in the prior art to adjust the transmission rate, which is not limited in the embodiments of the present application. Or, the mobile phone may refer to the existing rate adjustment strategy in the prior art to adjust the coding rate and the transmission rate, which is not limited in the embodiments of the present application.

It should also be noted that the above embodiment is described by taking the example of adaptively adjusting the encoding rate and transmission rate of audio data between the mobile phone and the first earplug of the TWS headset in the dual-shot scheme. In the non-dual-transmission scheme, the encoding rate and transmission rate of audio data can also be adaptively adjusted between the mobile phone and the main earplug of the TWS. For the specific process, refer to the description in the above embodiment, and details are not described here. In addition, the secondary earplug can also obtain the adjusted new coding parameter and transmission parameter from the main earplug, so as to receive audio data sent by the mobile phone according to the new coding parameter and transmission parameter.

It should be noted that in the above embodiment, the mobile phone is the source of audio data, and the first earplug of the TWS earphone is the destination of audio data. For example, when the second earplug of the TWS earphone is At the destination end, the adaptive adjustment process of the coding rate and the transmission rate is the same as the above process and will not be repeated here.

In the dual-transmission scheme, when the mobile phone is the source end of audio data and the two earplugs of the TWS earphone are the destination ends of the audio data, the coding rate and transmission rate of the audio data sent by the mobile phone to the two earplugs can be the same, or It may be different, and the embodiments of the present application are not limited. For the audio data received from the mobile phone, the two earplugs of the TWS headset can be synchronized to play.

It should also be noted that the above embodiment takes the mobile phone as the source end of audio data and the TWS earplug as the destination end of audio data for example. In some other embodiments, when the TWS earplug is the source end of the audio data (for example, the MIC of the TWS earplug has collected voice data), and the mobile phone is the destination end of the audio data, the TWS earplug can still adopt the method in the above embodiment to adapt Adjust the coding rate and transmission rate, which will not be repeated here.

It can be understood that, in order to realize the above-mentioned functions, the first BLE device and the second BLE device include hardware and/or software modules corresponding to performing each function. With reference to the example algorithm steps described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is performed by hardware or computer software driven hardware depends on the specific application of the technical solution and design constraints. A person skilled in the art may use different methods to implement the described functions for each specific application in combination with the embodiments, but such implementation should not be considered beyond the scope of the present application.

The BLE devices disclosed in the embodiments of the present application are used to implement the above method embodiments. Therefore, the first BLE device may be divided into function modules according to the above method examples. For example, each function module may be divided corresponding to each function, or the Two or more functions are integrated in one processing module. The above integrated module can be implemented in the form of hardware. It should be noted that the division of the modules in this embodiment is schematic, and is only a division of logical functions. In actual implementation, there may be another division manner.

In the case where each functional module is divided corresponding to each function, FIG. 17 shows a schematic diagram of a possible composition of the first BLE device 1700 involved in the above embodiment. As shown in FIG. 17, the first BLE device 1700 may Including: connection unit 1701, encoding unit 1702, transmission unit 1703, acquisition unit 1704, determination unit 1705, etc.

The connection unit 1701 may be used to support the first BLE device 1700 to perform the foregoing steps of establishing a low-power asynchronous connection link LEACL connection with the second BLE device; establishing a CIS connection with the second BLE device according to the first transmission parameters of the CIS, etc. , And/or other processes used in the techniques described herein.

The encoding unit 1702 may be used to support the first BLE device 1700 to perform the steps of encoding audio data based on the first encoding parameter described above; encoding audio data based on the second encoding parameter, and/or other techniques used in the technology described herein process.

The transmission unit 1703 may be used to support the first BLE device 1700 to perform the above-described transmission based on the first transmission parameters, and send the encoded audio data to the second BLE device through the CIS connection; while sending the audio data to the second BLE device through the CIS connection, The steps of sending the second transmission parameter to the second BLE device through the LEACL connection, and/or other processes used in the technology described herein.

The obtaining unit 1704 may be used to support the first BLE device 1700 to perform the above steps of obtaining reference parameters and/or other processes used in the technology described herein.

The determining unit 1705 may be used to support the first BLE device 1700 to perform the above steps of determining the second encoding parameter and the second transmission parameter according to the reference parameter, and/or other processes used in the technology described herein.

It should be noted that all relevant content of each step involved in the above method embodiments can be referred to the function description of the corresponding function module, which will not be repeated here.

The first BLE device 1700 provided in this embodiment is used to perform the above rate control method, and therefore can achieve the same effect as the above implementation method.

In the case of using an integrated unit, the first BLE device 1700 may include a processing module, a storage module, and a communication module. The processing module may be used to control and manage the actions of the first BLE device 1700, for example, may be used to support the first BLE device 1700 to perform the steps performed by the connection unit 1701, the encoding unit 1702, the acquisition unit 1704, and the determination unit 1705 . The storage module may be used to support the first BLE device 1700 to store program codes and data. The communication module may be used to support communication between the first BLE device 1700 and other devices, for example, may be used to support the first BLE device 1700 to perform the steps performed by the transmission unit 1703.

The processing module may be a processor or a controller. It can implement or execute various exemplary logical blocks, modules, and circuits described in conjunction with the disclosure of the present application. The processor may also be a combination of computing functions, such as a combination of one or more microprocessors, a combination of digital signal processing (DSP) and a microprocessor, and so on. The storage module may be a memory. The communication module may specifically be a device that interacts with other first BLE devices, such as a radio frequency circuit, a Bluetooth chip, or a Wi-Fi chip.

In one embodiment, when the processing module is a processor and the storage module is a memory, the first BLE device involved in this embodiment may be a mobile phone 100 having the structure shown in FIG. 2.

An embodiment of the present application further provides a computer storage medium that stores computer instructions, and when the computer instructions run on the first BLE device, the first BLE device executes the above-mentioned related method steps to implement the above embodiment The rate control method in

An embodiment of the present application also provides a computer program product, which, when the computer program product runs on a computer, causes the computer to perform the above-mentioned related steps to implement the rate control method performed by the first BLE device in the foregoing embodiment.

In addition, the embodiments of the present application also provide an apparatus. The apparatus may specifically be a chip, a component, or a module. The apparatus may include a connected processor and a memory; wherein the memory is used to store computer-executed instructions. When the apparatus is running, The processor may execute computer execution instructions stored in the memory, so that the chip executes the rate control method executed by the first BLE device in the foregoing method embodiments.

The first BLE device, computer storage medium, computer program product, or chip provided in this embodiment are used to perform the corresponding methods provided above. Therefore, for the beneficial effects that can be achieved, refer to the above provided The beneficial effects in the corresponding method will not be repeated here.

In the case where each function module is divided corresponding to each function, FIG. 18 shows a schematic diagram of a possible composition of the second BLE device 1800 involved in the above embodiment. As shown in FIG. 18, the second BLE device 1800 may Including: connection unit 1801, decoding unit 1802, transmission unit 1803, acquisition unit 1804, etc.

Wherein, the connection unit 1801 may be used to support the second BLE device 1800 to perform the foregoing steps of establishing a low-power asynchronous connection link LE ACL connection with the first BLE device; establishing a CIS connection with the first BLE device according to the first transmission parameters of the CIS, etc. , And/or other processes used in the techniques described herein.

The decoding unit 1802 may be used to support the second BLE device 1800 to perform the decoding of the audio data received from the first BLE device based on the first encoding parameter; based on the second encoding parameter, the audio received from the first BLE device Steps such as decoding the data, and/or other processes used in the techniques described herein.

The transmission unit 1803 may be used to support the second BLE device 1800 to perform the above-described first transmission parameters based on receiving the audio data sent by the first BLE device through the CIS connection; while receiving the audio data sent by the first BLE device through the CIS connection, through The LEACL connection receives steps such as the second transmission parameter sent by the first BLE device, and/or other processes used in the technology described herein.

The obtaining unit 1804 may be used to support the second BLE device 1800 to perform the above steps of learning the second encoding parameter from the first BLE device, and/or other processes used in the technology described herein.

The second BLE device 1800 provided in this embodiment is used to execute the above rate control method, and therefore can achieve the same effect as the above implementation method.

In the case of using an integrated unit, the second BLE device 1800 may include a processing module, a storage module, and a communication module. The processing module may be used to control and manage the actions of the second BLE device 1800. For example, it may be used to support the second BLE device 1800 to perform the steps performed by the connection unit 1801, the decoding unit 1802, and the acquisition unit 1804. The storage module may be used to support the second BLE device 1800 to store program codes and data. The communication module may be used to support communication between the second BLE device 1800 and other devices, for example, may be used to support the second BLE device 1800 to perform the steps performed by the transmission unit 1803.

In one embodiment, the second BLE device involved in this embodiment may be a TWS earphone with the structure shown in FIG. 3A.

An embodiment of the present application further provides a computer storage medium that stores computer instructions, and when the computer instructions run on the second BLE device, the second BLE device executes the above-mentioned related method steps to implement the above embodiment The rate control method in

An embodiment of the present application also provides a computer program product, which, when the computer program product runs on a computer, causes the computer to perform the above-mentioned related steps to implement the rate control method performed by the second BLE device in the foregoing embodiment.

In addition, the embodiments of the present application also provide an apparatus. The apparatus may specifically be a chip, a component, or a module. The apparatus may include a connected processor and a memory; wherein the memory is used to store computer-executed instructions. When the apparatus is running, The processor may execute computer execution instructions stored in the memory, so that the chip executes the rate control method performed by the second BLE device in the foregoing method embodiments.

Among them, the second BLE device, computer storage medium, computer program product or chip provided in this embodiment are used to perform the corresponding methods provided above, therefore, for the beneficial effects that can be achieved, refer to the above provided The beneficial effects in the corresponding method will not be repeated here.

Another embodiment of the present application provides a system, which may include the foregoing first BLE device and second BLE device, and may be used to implement the foregoing rate control method.

Through the description of the above embodiments, those skilled in the art can understand that, for the convenience and conciseness of description, only the above-mentioned division of each functional module is used as an example for illustration. In actual applications, the above-mentioned functions can be allocated by different The functional module is completed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above.

In the several embodiments provided in this application, it should be understood that the disclosed device and method may be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the modules or units is only a division of logical functions. In actual implementation, there may be other divisions, for example, multiple units or components may be The combination can either be integrated into another device, or some features can be ignored, or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical, or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may be one physical unit or multiple physical units, that is, may be located in one place, or may be distributed in multiple different places . Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or software function unit.

If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a readable storage medium. Based on such an understanding, the technical solutions of the embodiments of the present application may essentially be part of or contribute to the prior art or all or part of the technical solutions may be embodied in the form of software products, which are stored in a storage medium In it, several instructions are included to enable a device (which may be a single-chip microcomputer, chip, etc.) or processor to execute all or part of the steps of the methods described in the embodiments of the present application. The foregoing storage media include: U disk, mobile hard disk, read-only memory (read only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and other media that can store program codes.

The above content is only the specific implementation of this application, but the scope of protection of this application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in this application. Covered within the scope of protection of this application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A rate control method, which includes:

The first low-power Bluetooth BLE device establishes a low-power asynchronous connection link LE ACL connection with the second BLE device;

The first BLE device establishes a CIS connection with the second BLE device according to the first transmission parameter of the connected isochronous audio stream CIS; the first transmission parameter is used to determine the transmission rate of audio data;

The first BLE device uses first encoding parameters to encode audio data; the first encoding parameters are used to determine the encoding rate of audio data;

The first BLE device uses the first transmission parameter to send audio data encoded with the first encoding parameter to the second BLE device through the CIS connection;

The first BLE device determines a second encoding parameter and a second transmission parameter, the second encoding parameter is used to determine an encoding rate of audio data, and the second encoding parameter is different from the first encoding parameter; The second transmission parameter is used to determine the transmission rate of the audio data, and the second transmission parameter is different from the first transmission parameter;

The first BLE device uses the second encoding parameter to encode audio data;

The first BLE device uses the first transmission parameter to send audio data to the second BLE device through the CIS connection, and sends the second transmission parameter to the second BLE device through the LEACL connection Second BLE device;

The first BLE device uses the second transmission parameter to send audio data encoded with the second encoding parameter to the second BLE device through the CIS connection.
The method according to claim 1, wherein before the first BLE device determines the second encoding parameter and the second transmission parameter, the method further comprises:

The first BLE device obtains reference parameters;

The determination of the second encoding parameter and the second transmission parameter by the first BLE device includes:

When the reference parameter satisfies a preset condition, the first BLE device determines the second encoding parameter and the second transmission parameter according to the reference parameter.
The method according to claim 2, wherein the reference parameter includes a channel quality parameter of the CIS connection; the first BLE device determines according to the reference parameter when the reference parameter meets a preset condition The second encoding parameter and the second transmission parameter include:

If the channel quality parameter of the CIS connection is greater than or equal to a first preset value, the first BLE device determines the second encoding parameter and the second transmission parameter according to the channel quality parameter of the CIS connection, so that The encoding rate determined by the second encoding parameter is greater than the encoding rate determined by the first encoding parameter, and the transmission rate determined by the second transmission parameter is greater than the transmission rate determined by the first transmission parameter;

If the channel quality parameter of the CIS connection is less than the second preset value, the first BLE device determines the second transmission parameter according to the channel quality parameter of the CIS connection, so that the encoding determined by the second encoding parameter The rate is less than the encoding rate determined by the first encoding parameter, and the transmission rate determined by the second transmission parameter is less than the transmission rate determined by the first transmission parameter.
The method according to claim 3, wherein if the channel quality parameter of the CIS connection is greater than or equal to a first preset value, the second encoding parameter is used to perform audio data processing on the first BLE device After encoding, the first BLE device uses the second transmission parameter, and sends audio data encoded with the second encoding parameter to the second BLE device through the CIS connection;

If the channel quality parameter of the CIS connection is less than a second preset value, before the first BLE device uses the second encoding parameter to encode audio data, the first BLE device uses the second transmission Parameter, sending audio data encoded with the second encoding parameter to the second BLE device through the CIS connection.
The method according to any one of claims 2-4, wherein the channel quality parameter includes a packet loss rate, and the second encoding parameter includes a bitpool value; the first BLE device determines according to the reference parameter The second encoding parameter includes:

The first BLE device determines the corresponding target coding rate and target bitpool value according to the packet loss rate, and the second coding parameter includes the target bitpool value.
The method according to any one of claims 2-4, wherein the reference parameter includes a data volume of encoded audio data to be transmitted, and the first BLE device when the reference parameter meets a preset condition , Determining the second transmission parameter according to the reference parameter, including:

If the data volume of the encoded audio data to be transmitted is greater than or equal to a preset threshold, the first BLE device according to the mapping relationship between the data volume to be transmitted and the preset data volume to be transmitted and the encoding parameter and the transmission parameter, Determining the second encoding parameter and the second transmission parameter so that the encoding rate determined by the second encoding parameter is less than the encoding rate determined by the first encoding parameter, and the transmission rate determined by the second transmission parameter is less than all The transmission rate determined by the first transmission parameter.
The method according to any one of claims 1 to 6, wherein before the first BLE device uses the second transmission parameter to send audio data to the second BLE device through the CIS connection, The method also includes:

The first BLE device sends update time indication information to the second BLE device;

The first BLE device uses the second transmission parameter to send audio data to the second BLE device through the CIS connection, including:

The first BLE device uses the second transmission parameter to transmit audio data to the second BLE device through the CIS connection at the time indicated by the update time indication information.
The method according to any one of claims 1-7, wherein after the first BLE device determines the second encoding parameter, the method further comprises:

The first BLE device notifies the second coding parameter to the second BLE device.
The method according to claim 8, wherein the audio data encoded with the second encoding parameter includes indication information of the second encoding parameter.
The method according to any one of claims 1-9, wherein the first BLE device includes a first host and a first link layer, and the second BLE device includes a second link layer; The first BLE device sends the second transmission parameter to the second BLE device through the LEACL connection, including:

The first host sends parameter update information to the first link layer, where the parameter update information includes the second transmission parameter;

The first link layer sends CIS update request information to the second link layer, where the CIS update request information includes the second transmission parameter.
The method according to claim 10, wherein the first host and the first link layer exchange information through a host controller interface protocol HCI command; the first link layer and the first link layer The two link layers exchange information through link layer LL commands.
The method according to any one of claims 1-11, wherein the reference parameter includes a channel quality parameter of the CIS connection, and the first BLE device acquiring the channel quality parameter of the CIS connection includes:

The first BLE device acquires the channel quality parameter of the CIS connection from itself; or,

The first BLE device acquires the channel quality parameter of the CIS connection from the second BLE device.
The method according to any one of claims 1-12, wherein the second transmission parameter includes one or more of the following: number of bursts BN, number of sub-events NSE, refresh timeout FT, sub-event duration and PHY type; wherein, the PHY type includes transmission bandwidth and modulation method.
A transmission rate control method, which includes:

The second low-power Bluetooth BLE device establishes a low-power asynchronous connection link LE ACL connection with the first BLE device;

The second BLE device establishes a CIS connection with the first BLE device based on the first transmission parameter of the connected isochronous audio stream CIS; the first transmission parameter is used to determine the transmission rate of audio data;

The second BLE device uses the first transmission parameter to receive audio data sent by the first BLE device through the CIS connection;

The second BLE device decodes the audio data received from the first BLE device according to the first encoding parameter; the first encoding parameter is used to determine the encoding rate of the audio data;

If the second BLE device obtains the second encoding parameter from the first BLE device, the second BLE device performs audio data received from the first BLE device according to the second encoding parameter Decoding; the second encoding parameter is used to determine the encoding rate of the audio data, and the second encoding parameter is different from the first encoding parameter;

If the second BLE device uses the first transmission parameter and receives the audio data sent by the first BLE device through the CIS connection, it receives the first BLE device sent through the LEACL connection A second transmission parameter; the second transmission parameter is used to determine a transmission rate of audio data, and the second transmission parameter is different from the first transmission parameter; then the second BLE device adopts the second transmission parameter , Receiving audio data sent by the first BLE device through the CIS connection.
The method according to claim 14, wherein the second BLE device acquiring the second encoding parameter from the first BLE device includes:

The second BLE device obtains the second encoding parameter from the audio data sent by the first BLE device and encoded with the second encoding parameter.
The method according to claim 14 or 15, wherein before the second BLE device uses the second transmission parameter to receive audio data sent by the first BLE device through the CIS connection, the The method also includes:

The second BLE device receives update time indication information sent by the first BLE device;

The second BLE device uses the second transmission parameter to receive audio data sent by the first BLE device through the CIS connection, including:

The second BLE device receives the audio data sent by the first BLE device through the CIS connection using the second transmission parameter at the time indicated by the update time indication information.
The method according to any one of claims 14 to 16, wherein the first BLE device includes a first link layer, and the second BLE device includes a second host and a second link layer; The second BLE device receives the second transmission parameter sent by the first BLE device through the LEACL connection, including:

The second link layer receives CIS update request information sent by the first link layer, and the update request information includes the second transmission parameter.
The method according to claim 17, wherein the second host and the second link layer exchange information through a host controller interface protocol HCI command; the first link layer and the first The two link layers exchange information through link layer LL commands.
The method according to any one of claims 14 to 18, wherein the second BLE device receives the second transmission parameter sent by the first BLE device through the LEACL connection, and the second Before the BLE device uses the second encoding parameter to decode the audio data received from the first BLE device, the method further includes:

The second BLE device sends the channel quality parameter of the CIS connection to the first BLE device.
The method according to any one of claims 14-19, wherein the second BLE device is a wireless headset.
A Bluetooth low energy BLE device, characterized by comprising: one or more processors; one or more memories; wherein the one or more memories store computer program instructions, when the instructions are When executed by one or more processors, the BLE device performs the following steps:

Establish a low-power asynchronous connection link LE ACL connection with another BLE device;

Establishing a CIS connection with another BLE device according to the first transmission parameter of the connected isochronous audio stream CIS; the first transmission parameter is used to determine the transmission rate of audio data;

The first encoding parameter is used to encode the audio data; the first encoding parameter is used to determine the encoding rate of the audio data;

Using the first transmission parameter to send the encoded audio data to the another BLE device through the CIS connection;

Determining a second encoding parameter and a second transmission parameter, the second encoding parameter is used to determine an encoding rate of audio data, and the second encoding parameter is different from the first encoding parameter; the second transmission parameter is used Determining a transmission rate of audio data, and the second transmission parameter is different from the first transmission parameter;

Encoding the audio data using the second encoding parameter;

Using the first transmission parameter to send audio data to the other BLE device through the CIS connection, and sending the second transmission parameter to the other BLE device through the LEACL connection;

Using the second transmission parameter, audio data encoded with the second encoding parameter is sent to the another BLE device through the CIS connection.
The device according to claim 21, wherein when the instruction is executed by the one or more processors, the BLE device is caused to perform the following steps:

Before determining the second encoding parameter and the second transmission parameter, obtain the reference parameter;

When the reference parameter satisfies a preset condition, the second encoding parameter and the second transmission parameter are determined according to the reference parameter.
The device according to claim 22, wherein the reference parameter includes a channel quality parameter of the CIS connection; when the instruction is executed by the one or more processors, the BLE device performs the following step:

If the channel quality parameter of the CIS connection is greater than or equal to a first preset value, the second encoding parameter and the second transmission parameter are determined according to the channel quality parameter of the CIS connection, so that the second encoding parameter The determined encoding rate is greater than the encoding rate determined by the first encoding parameter, and the transmission rate determined by the second transmission parameter is greater than the transmission rate determined by the first transmission parameter;

If the channel quality parameter of the CIS connection is less than the second preset value, the second transmission parameter is determined according to the channel quality parameter of the CIS connection, so that the coding rate determined by the second coding parameter is less than the first The coding rate determined by the coding parameter, the transmission rate determined by the second transmission parameter is less than the transmission rate determined by the first transmission parameter.
The device according to claim 23, wherein when the instruction is executed by the one or more processors, the BLE device is caused to perform the following steps:

If the channel quality parameter of the CIS connection is greater than or equal to the first preset value, then after the second encoding parameter is used to encode the audio data, the second transmission parameter is used to pass the CIS connection to the Another BLE device sends audio data encoded using the second encoding parameter;

If the channel quality parameter of the CIS connection is less than the second preset value, before encoding the audio data using the second encoding parameter, the second transmission parameter is used to pass the CIS connection to the other The BLE device sends audio data encoded using the second encoding parameter.
The device according to any one of claims 22-24, wherein the channel quality parameter includes a packet loss rate, and the second encoding parameter includes a bitpool value; when the instruction is processed by the one or more When the device is executed, the BLE device is caused to perform the following steps:

The corresponding target coding rate and target bitpool value are determined according to the packet loss rate, and the second coding parameter includes the target bitpool value.
The device according to any one of claims 22-24, wherein the reference parameter includes a data volume of encoded audio data to be transmitted, and when the instruction is executed by the one or more processors, Causing the BLE device to perform the following steps:

If the data volume of the encoded audio data to be transmitted is greater than or equal to a preset threshold, the second encoding is determined according to the mapping relationship between the data volume to be transmitted and the preset data volume to be transmitted and the encoding parameter and the transmission parameter Parameters and the second transmission parameter, such that the coding rate determined by the second coding parameter is less than the coding rate determined by the first coding parameter, and the transmission rate determined by the second transmission parameter is less than determined by the first transmission parameter Transfer rate.
The device according to any one of claims 21 to 26, wherein when the instruction is executed by the one or more processors, the BLE device is caused to perform the following steps:

Before using the second transmission parameter to send audio data to the another BLE device through the CIS connection, send update time indication information to the another BLE device;

At the time indicated by the update time indication information, the second transmission parameter is used to send audio data to the other BLE device through the CIS connection.
The device according to any one of claims 21-27, wherein when the instruction is executed by the one or more processors, the BLE device is caused to perform the following steps:

After determining the second encoding parameter, notify the other BLE device of the second encoding parameter.
The device according to claim 28, wherein the audio data encoded with the second encoding parameter includes indication information of the second encoding parameter.
The device according to any one of claims 21 to 29, wherein the BLE device includes a first host and a first link layer, and the other BLE device includes a second link layer; when the instruction When executed by the one or more processors, the BLE device is caused to perform the following steps:

The first host sends parameter update information to the first link layer, where the parameter update information includes the second transmission parameter;

The first link layer sends CIS update request information to the second link layer, and the CIS update request information includes the second transmission parameter.
The device according to claim 30, wherein the first host and the first link layer exchange information through a host controller interface protocol HCI command; the first link layer and the first link layer The two link layers exchange information through link layer LL commands.
The device according to any one of claims 21 to 31, wherein when the instruction is executed by the one or more processors, the BLE device is caused to perform the following steps:

Obtain the channel quality parameter of the CIS connection from itself; or,

Acquiring the channel quality parameter of the CIS connection from the another BLE device.
The device according to any one of claims 21 to 32, wherein the second transmission parameter includes one or more of the following: number of bursts BN, number of sub-events NSE, refresh timeout FT, duration of sub-events, and PHY type; wherein, the PHY type includes transmission bandwidth and modulation method.
The device according to any one of claims 21 to 33, wherein the BLE device is a chip.
A Bluetooth low energy BLE device, characterized by comprising: one or more processors; one or more memories; wherein the one or more memories store computer program instructions, when the instructions are When executed by one or more processors, the BLE device performs the following steps:

Establish a low-power asynchronous connection link LE ACL connection with another BLE device;

Establishing a CIS connection with the another BLE device according to the first transmission parameter of the connected isochronous audio stream CIS; the first transmission parameter is used to determine the transmission rate of audio data;

Using the first transmission parameter to receive audio data sent by the other BLE device through the CIS connection;

Decoding the audio data received from the another BLE device according to the first encoding parameter; the first encoding parameter is used to determine the encoding rate of the audio data;

If the second encoding parameter is obtained from the other BLE device, then the audio data received from the other BLE device is decoded according to the second encoding parameter; the second encoding parameter is used to determine the audio An encoding rate of data, and the second encoding parameter is different from the first encoding parameter;

If the first transmission parameter is used, while receiving the audio data sent by the other BLE device through the CIS connection, the second transmission parameter sent by the other BLE device is received through the LEACL connection; The second transmission parameter is used to determine a transmission rate of audio data, and the second transmission parameter is different from the first transmission parameter; then the second transmission parameter is used to receive the other BLE through the CIS connection Audio data sent by the device.
The device according to claim 35, wherein when the instruction is executed by the one or more processors, the BLE device is caused to perform the following steps:

Acquiring the second encoding parameter from the audio data sent by the another BLE device and encoded with the second encoding parameter.
The device according to claim 35 or 36, wherein when the instruction is executed by the one or more processors, the BLE device is caused to perform the following steps:

Before using the second transmission parameter to receive the audio data sent by the another BLE device through the CIS connection, receive the update time indication information sent by the other BLE device;

At the time indicated by the update time indication information, the second transmission parameter is used to receive audio data sent by the other BLE device through the CIS connection.
The device according to any one of claims 35 to 37, wherein the other BLE device includes a first link layer, and the BLE device includes a second host and a second link layer; when the instruction When executed by the one or more processors, the BLE device is caused to perform the following steps:

The second link layer receives CIS update request information sent by the first link layer, and the update request information includes the second transmission parameter.
The device according to claim 38, wherein the second host and the second link layer exchange information through a host controller interface protocol HCI command; the first link layer and the first link layer The two link layers exchange information through link layer LL commands.
The device according to any one of claims 35 to 39, wherein when the instruction is executed by the one or more processors, the BLE device is caused to perform the following steps:

Before receiving the second transmission parameter sent by the another BLE device through the LEACL connection and using the second encoding parameter to decode the audio data received from the another BLE device, The BLE device sends the channel quality parameter of the CIS connection.
The device according to any one of claims 35 to 40, wherein the BLE device is a wireless headset.
The device according to any one of claims 35 to 41, wherein the BLE device is a chip.
A computer storage medium, comprising computer instructions, which when executed on a Bluetooth low energy BLE device, causes the BLE device to perform the rate according to any one of claims 1-20 Control Method.
A computer program product, characterized in that, when the computer program product runs on a computer, the computer is caused to execute the rate control method according to any one of claims 1-20.
A Bluetooth low energy BLE device, characterized in that the BLE device comprises means for performing the method according to any one of claims 1-20.