An audio sharing method based on LE Audio Bluetooth earphones

Abstract

The application discloses an audio sharing method based on LE Audio Bluetooth earphones, and relates to the technical field of Bluetooth audio sharing.The audio sharing method based on LE Audio Bluetooth earphones is based on two key technologies, Multi-Stream Audio (MSA) and Broadcast Isochronous Channels (BIS). MSA is one of the core functions of LE Audio, which allows a central device to transmit multiple audio streams to multiple slave devices simultaneously. The central device can be an audio source device (such as a smartphone), while the slave device can be a Bluetooth earphone or other LE Audio-enabled device. BIS is a new channel type for audio transmission in Bluetooth, which provides high-quality audio transmission and supports multiple slave devices to receive audio streams simultaneously. BIS achieves multi-device synchronous playback by dividing audio streams into small time segments and allowing each slave device to receive audio streams within a specified time period. The process includes five steps: pairing and connection, audio stream division, BIS channel allocation, time division multiplexing, reception and playback.

Description

Technical Field

[0001] This invention relates to the field of Bluetooth audio sharing technology, and in particular to an audio sharing method based on LE Audio Bluetooth headphones. Background Technology

[0002] Bluetooth headphones based on LE Audio can receive different audio streams simultaneously via Bluetooth connection, thereby enabling audio sharing. This allows users to share audio with two headphones using one device (such as a mobile phone), allowing multiple people to enjoy the same audio content, such as music or movies, at the same time.

[0003] Based on the above advantages, LE Audio is the next-generation standard for Bluetooth audio. It introduces a new feature called multi-stream audio, which makes it possible to share audio between a pair of Bluetooth headphones and has broad application prospects. Therefore, an audio sharing method based on LE Audio Bluetooth headphones is proposed for audio sharing based on LE Audio Bluetooth headphones. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides an audio sharing method based on LE Audio Bluetooth headphones.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] An audio sharing method based on LE Audio Bluetooth headphones includes the following steps;

[0009] S1: Pairing and Connecting. Pairing and connecting the Bluetooth headset with the audio source device. This can be done by enabling Bluetooth on both the headset and the audio source device and performing the pairing process.

[0010] S2: Audio stream partitioning. The audio source device divides the audio stream to be shared into multiple sub-streams. Each sub-stream corresponds to a slave device (Bluetooth headset). In this way, each slave device will receive a specific sub-stream.

[0011] S3: BIS channel allocation. The audio source device uses the BIS channel to send the audio stream. It will allocate a specific BIS channel to each slave device so that the corresponding sub-stream can be sent to the corresponding headphones. This ensures that each device can receive the correct audio stream.

[0012] S4: Time Division Multiplexing (TDMA) channel uses TDMA technology to divide time, ensuring that each sub-stream is transmitted within the corresponding time period. In this way, each slave device only receives the corresponding audio stream within a specific time period, realizing synchronous playback of multiple devices.

[0013] S5: Receiving and Playing Audio. After receiving the audio stream assigned to it, the Bluetooth earphone decodes and processes the audio and plays it through the earphone's speaker. In this way, each earphone can play audio content synchronized with other earphones at the same time.

[0014] Preferably, the S1 pairing and connection includes the following steps:

[0015] S11: Initiate pairing, enabling pairing mode on Bluetooth headsets and audio source devices, usually done by pressing a specific button on the device or through an option in the device settings;

[0016] S12: Discover devices. Initiate the Bluetooth pairing process on the audio source device, enabling it to search for visible Bluetooth devices and list the available devices.

[0017] S13: Select Device. The user selects the Bluetooth headset to connect from the list of audio source devices.

[0018] S14: Initiate connection: The audio source device sends a connection request to the selected Bluetooth headset;

[0019] S15: Security Authentication. During the pairing process, the Bluetooth device will also perform security authentication to ensure that the established connection is secure.

[0020] S15: Pairing Confirmation. The Bluetooth headset will display a connection request on its screen or through sound prompts. The user must confirm the pairing request to establish a connection.

[0021] S16: Connection complete. Once pairing is confirmed, a Bluetooth connection is established between the audio source device and the Bluetooth headset.

[0022] S17: Data exchange. Once pairing and connection are complete, data exchange can occur between the Bluetooth headset and the audio source device. The audio source device can transmit audio streams to the Bluetooth headset, and the Bluetooth headset can receive and play audio from the audio source.

[0023] Preferably, the S2 audio stream partitioning includes the following steps:

[0024] S21: Link establishment. After the Bluetooth headset and the audio source device are successfully paired and connected, a Bluetooth link is established between them. Link establishment refers to the establishment of a reliable physical connection and communication channel between the devices.

[0025] S22: Audio protocol selection. Bluetooth headphones support multiple audio protocols. The audio source device selects the appropriate protocol based on the protocols it supports and the capabilities of the Bluetooth headphones.

[0026] S23: Audio encoding and decoding. Once a suitable audio protocol is selected, the audio source device encodes the audio signal and then sends it to the Bluetooth headset via the Bluetooth link. After receiving the audio data, the Bluetooth headset decodes it to restore the original audio signal.

[0027] S24: Transmission and buffering. Audio data is transmitted in packets via the Bluetooth link, with a certain packet size and transmission rate. The Bluetooth headset at the receiving end uses a buffer to manage the received audio data to ensure the continuity and stability of the audio stream.

[0028] S25: Audio processing and amplification. Once the audio data is decoded and buffered, the Bluetooth headset performs audio processing, such as audio equalization, volume adjustment, and ambient noise cancellation. The processed audio signal is then amplified to drive the headset's speakers, allowing the user to hear the audio.

[0029] Preferably, the allocation of the S3BIS channel includes the following steps:

[0030] S31: Link establishment, establishing a Bluetooth link between a Bluetooth device (e.g., Bluetooth headset) and an audio source device (e.g., mobile phone), which includes the pairing and connection process between Bluetooth devices;

[0031] S32: BIS channel negotiation. After the link is established, the Bluetooth device and the audio source device will negotiate the allocation of the BIS channel. This is usually implemented using L2CAP (Logical Link Control and Adaptation Protocol). L2CAP is a protocol in Bluetooth used to transmit various types of data between Bluetooth devices.

[0032] S33: BIS Channel Allocation. During the negotiation process, the audio source device requests one or more BIS channels from the Bluetooth device. A BIS channel is a set of time slots or Time Division Multiple Access (TDMA) time slots used to transmit audio data. The audio source device determines the number and configuration of BIS channels based on the required audio quality and bandwidth.

[0033] S34: Bandwidth allocation. Once the BIS channel allocation is complete, bandwidth allocation will be performed between the Bluetooth device and the audio source device to ensure that each BIS channel obtains sufficient transmission bandwidth to meet the requirements of the audio data.

[0034] S35: Real-time audio transmission. The BIS channel is used to transmit audio data in real time between the Bluetooth device and the audio source device. The audio source device segments the real-time audio data into small data packets and sends them to the Bluetooth device through the BIS channel. After receiving the audio data, the Bluetooth device decodes and amplifies it so that the user can hear the audio. The allocation and management of the BIS channel are bidirectional between the Bluetooth device and the audio source device.

[0035] Preferably, the S4 time-division multiplexing transmission includes the following steps:

[0036] S41: Negotiate time slot allocation. The master and slave devices negotiate to determine the number and order of time slots allocated to the slave device. This process may involve handshake protocols and protocol stack interactions between the devices.

[0037] S42: Establish connection. The master device sends a connection request to the slave device to request the establishment of an audio transmission connection. The slave device receives the connection request and sends a connection confirmation to the master device.

[0038] S43: Time slot allocation. The master device allocates a set of time slots to the slave device for transmitting multiple audio streams. The number and order of the time slots are determined by negotiation between the devices.

[0039] S44: Data transmission. In a specified time slot, the master device sends audio data to the slave device via Bluetooth. The master device segments the corresponding audio data and sends it to the slave device according to the time slot allocation.

[0040] S45: Data reception and decoding. The device receives audio data sent by the master device, performs decoding processing, and transmits the decoded audio data to the speaker of the Bluetooth headset for playback.

[0041] S46: Synchronization Management. In order to maintain the synchronization of multiple audio streams, the master and slave devices need to synchronize the transmission between time slots through a clock signal. The clock signal is used to ensure that the master and slave devices send and receive data in the correct time slots, thereby achieving the accuracy and synchronization of the audio streams.

[0042] S47: Continuous transmission. Through the above process, the master and slave devices can continuously transmit multiple audio streams, allowing users to hear the left and right channels simultaneously, achieving a stereo effect.

[0043] Preferably: Before establishing a connection, it is necessary to confirm that both the Bluetooth headset and the audio source device support LE Audio's Multi-Stream Audio function;

[0044] Preferably, the S15 security authentication is achieved through a PIN code or a randomly generated security key;

[0045] Preferably, the audio protocol selected in S22 can include Advanced Audio Distribution Profile, Low Complexity Subband Coding, AAC, and aptX;

[0046] Preferably: In the S32BIS channel negotiation, after the link is established, the Bluetooth device and the audio source device will negotiate the allocation of the BIS channel, which is usually implemented using the Logical Link Control and Adaptation Protocol, abbreviated as L2CAP;

[0047] Preferably, the headphones and audio source device need to be set to pairable mode.

[0048] (III) Beneficial Effects

[0049] 1. LE Audio Bluetooth headphones' audio sharing function allows multiple users to share audio with multiple headphones using a single device, eliminating the need for an audio splitter or multiple wired headphone connections. It incorporates a Low Complexity Communications Codec (LC3) to reduce power consumption during audio transmission, making audio sharing more efficient while maintaining headphone battery life. Based on LE Audio's audio sharing function, audio synchronization between multiple headphones can be achieved, meaning multiple users can simultaneously hear audio from the same source with virtually no latency.

[0050] 2. Audio sharing allows multiple users to share audio content, such as music and movies. This sharing experience can enhance social interaction and enable users to enjoy and discuss the same audio content simultaneously. LE Audio supports sending different audio streams to each Bluetooth headset, allowing each user to independently select their own channel (left or right channel). In this way, users can customize their listening experience according to their personal preferences. The audio sharing function of Bluetooth headsets is suitable for various scenarios, such as music sharing among friends, home entertainment, and business meetings. It provides users with more possibilities for audio sharing and increases the diversity of usage scenarios. Attached Figure Description

[0051] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings:

[0052] Figure 1 This is an overall flowchart of the present invention;

[0053] Figure 2This is a schematic diagram of the time-division multiplexing process in this invention;

[0054] Figure 3 This is a schematic diagram of the LE Audio Bluetooth headset in this invention. Detailed Implementation

[0055] This application provides an audio sharing method based on LE Audio Bluetooth headsets.

[0056] Example

[0057] The overall technical solution in this application is as follows:

[0058] To address the problems existing in the prior art, this invention provides an audio sharing method based on LE Audio Bluetooth headphones. The audio sharing function of LE Audio is based on two key technologies: Multi-Stream Audio (MSA) and Broadcast Isochronous Channels (BIS). MSA is one of the core functions of LE Audio, which allows a central device to transmit multiple audio streams to multiple slave devices simultaneously. The central device can be an audio source device (such as a smartphone), while the slave devices can be Bluetooth headphones or other devices that support LE Audio. BIS is a new channel type for audio transmission in Bluetooth. It provides high-quality audio transmission and supports multiple slave devices to receive audio streams simultaneously. BIS achieves multi-device synchronous playback by dividing the audio stream into small time segments and allowing each slave device to receive the audio stream within a specified time period, including the following steps;

[0059] S1: Pairing and Connecting. Pairing and connecting the Bluetooth headset with the audio source device. This can be done by enabling Bluetooth on both the headset and the audio source device and performing the pairing process.

[0060] S2: Audio stream partitioning. The audio source device divides the audio stream to be shared into multiple sub-streams. Each sub-stream corresponds to a slave device (Bluetooth headset). In this way, each slave device will receive a specific sub-stream.

[0061] S3: BIS channel allocation. The audio source device uses the BIS channel to send the audio stream. It will allocate a specific BIS channel to each slave device so that the corresponding sub-stream can be sent to the corresponding headphones. This ensures that each device can receive the correct audio stream.

[0062] S4: Time Division Multiplexing (TDMA) channel uses TDMA technology to divide time, ensuring that each sub-stream is transmitted within the corresponding time period. In this way, each slave device only receives the corresponding audio stream within a specific time period, realizing synchronous playback of multiple devices.

[0063] S5: Receiving and Playing Audio. After receiving the audio stream assigned to it, the Bluetooth earphone decodes and processes the audio and plays it through the earphone's speaker. In this way, each earphone can play audio content synchronized with other earphones at the same time.

[0064] S1 pairing and connection includes the following steps:

[0065] S11: Initiate pairing, enabling pairing mode on Bluetooth headsets and audio source devices, usually done by pressing a specific button on the device or through an option in the device settings;

[0066] S12: Discover devices. Initiate the Bluetooth pairing process on the audio source device, enabling it to search for visible Bluetooth devices and list the available devices.

[0067] S13: Select Device. The user selects the Bluetooth headset to connect from the list of audio source devices.

[0068] S14: Initiate connection: The audio source device sends a connection request to the selected Bluetooth headset;

[0069] S15: Security Authentication. During the pairing process, the Bluetooth device will also perform security authentication to ensure that the established connection is secure.

[0070] S15: Pairing Confirmation. The Bluetooth headset will display a connection request on its screen or through sound prompts. The user must confirm the pairing request to establish a connection.

[0071] S16: Connection complete. Once pairing is confirmed, a Bluetooth connection is established between the audio source device and the Bluetooth headset.

[0072] S17: Data exchange. Once pairing and connection are complete, data exchange can occur between the Bluetooth headset and the audio source device. The audio source device can transmit audio streams to the Bluetooth headset, and the Bluetooth headset can receive and play audio from the audio source.

[0073] S2 audio stream partitioning includes the following steps:

[0074] S21: Link establishment. After the Bluetooth headset and the audio source device are successfully paired and connected, a Bluetooth link is established between them. Link establishment refers to the establishment of a reliable physical connection and communication channel between the devices.

[0075] S22: Audio protocol selection. Bluetooth headphones support multiple audio protocols. The audio source device selects the appropriate protocol based on the protocols it supports and the capabilities of the Bluetooth headphones.

[0076] S23: Audio encoding and decoding. Once a suitable audio protocol is selected, the audio source device encodes the audio signal and then sends it to the Bluetooth headset via the Bluetooth link. After receiving the audio data, the Bluetooth headset decodes it to restore the original audio signal.

[0077] S24: Transmission and buffering. Audio data is transmitted in packets via the Bluetooth link, with a certain packet size and transmission rate. The Bluetooth headset at the receiving end uses a buffer to manage the received audio data to ensure the continuity and stability of the audio stream.

[0078] S25: Audio processing and amplification. Once the audio data is decoded and buffered, the Bluetooth headset will perform audio processing, such as audio equalization, volume adjustment, and ambient noise cancellation. Then, the processed audio signal will be amplified to drive the headset's speaker, allowing the user to hear the audio.

[0079] The allocation of S3BIS channels includes the following steps:

[0080] S31: Link establishment, establishing a Bluetooth link between a Bluetooth device (e.g., Bluetooth headset) and an audio source device (e.g., mobile phone), which includes the pairing and connection process between Bluetooth devices;

[0081] S32: BIS channel negotiation. After the link is established, the Bluetooth device and the audio source device will negotiate the allocation of the BIS channel. This is usually implemented using L2CAP (Logical Link Control and Adaptation Protocol). L2CAP is a protocol in Bluetooth used to transmit various types of data between Bluetooth devices.

[0082] S33: BIS Channel Allocation. During the negotiation process, the audio source device requests one or more BIS channels from the Bluetooth device. A BIS channel is a set of time slots or Time Division Multiple Access (TDMA) time slots used to transmit audio data. The audio source device determines the number and configuration of BIS channels based on the required audio quality and bandwidth.

[0083] S34: Bandwidth allocation. Once the BIS channel allocation is complete, bandwidth allocation will be performed between the Bluetooth device and the audio source device to ensure that each BIS channel obtains sufficient transmission bandwidth to meet the requirements of the audio data.

[0084] S35: Real-time audio transmission. The BIS channel is used to transmit audio data in real time between the Bluetooth device and the audio source device. The audio source device segments the real-time audio data into small data packets and sends them to the Bluetooth device through the BIS channel. After receiving the audio data, the Bluetooth device decodes and amplifies it so that the user can hear the audio. The allocation and management of the BIS channel are bidirectional between the Bluetooth device and the audio source device.

[0085] S4 time-division multiplexing includes the following steps:

[0086] S41: Negotiate time slot allocation. The master and slave devices negotiate to determine the number and order of time slots allocated to the slave device. This process may involve handshake protocols and protocol stack interactions between the devices.

[0087] S42: Establish connection. The master device sends a connection request to the slave device to request the establishment of an audio transmission connection. The slave device receives the connection request and sends a connection confirmation to the master device.

[0088] S43: Time slot allocation. The master device allocates a set of time slots to the slave device for transmitting multiple audio streams. The number and order of the time slots are determined by negotiation between the devices.

[0089] S44: Data transmission. In a specified time slot, the master device sends audio data to the slave device via Bluetooth. The master device segments the corresponding audio data and sends it to the slave device according to the time slot allocation.

[0090] S45: Data reception and decoding. The device receives audio data sent by the master device, performs decoding processing, and transmits the decoded audio data to the speaker of the Bluetooth headset for playback.

[0091] S46: Synchronization Management. In order to maintain the synchronization of multiple audio streams, the master and slave devices need to synchronize the transmission between time slots through a clock signal. The clock signal is used to ensure that the master and slave devices send and receive data in the correct time slots, thereby achieving the accuracy and synchronization of the audio streams.

[0092] S47: Continuous transmission. Through the above process, the master and slave devices can continuously transmit multiple audio streams, allowing users to hear the left and right channels simultaneously and achieve a stereo effect.

[0093] Before establishing a connection, it is necessary to confirm that both the Bluetooth headset and the audio source device support LE Audio's Multi-Stream Audio function. S15 security authentication is achieved through a PIN code or a randomly generated security key. S22 audio protocol selection includes optional protocols such as Advanced Audio Distribution Profile, Low Complexity Subband Coding, AAC, and aptX. In S32 BIS channel negotiation, after the link is established, the Bluetooth device and the audio source device will negotiate the allocation of the BIS channel. This is usually implemented using the Logical Link Control and Adaptation Protocol, or L2CAP for short. The headset and the audio source device need to be set to pairing mode. Bluetooth devices (such as headsets and audio source devices) have different pairing modes, such as visible mode and pairing mode. When the device is in visible mode, it will send a broadcast signal to notify other devices of its presence. In pairing mode, the device allows other devices to establish Bluetooth connections with it.

[0094] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation. For those skilled in the art, other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all implementation methods here, and any obvious variations or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. An audio sharing method based on LE Audio Bluetooth headphones, characterized in that, The audio sharing method based on LE Audio Bluetooth headphones includes the following steps; S1: Pairing and Connecting. Pairing and connecting the Bluetooth headset with the audio source device is accomplished by enabling Bluetooth on both the headset and the audio source device and performing the pairing process. S2: Audio stream partitioning. The audio source device divides the audio stream to be shared into multiple sub-streams, and each sub-stream corresponds to a slave device. S3: BIS channel allocation. Audio source devices use BIS channels to send audio streams. A specific BIS channel will be allocated to each slave device, and the corresponding sub-stream will be sent to the corresponding headphones to ensure that each device can receive the correct audio stream. S4: Time Division Multiplexing (TDMA) channel uses TDMA technology to divide time, with each sub-stream being transmitted within a corresponding time period. Each slave device receives the corresponding audio stream only within a specific time period, enabling synchronized playback across multiple devices. S5: Receiving and Playing Audio. After receiving the audio stream assigned to it, the Bluetooth earphone decodes and processes the audio and plays it through the earphone's speaker. Each earphone can simultaneously play audio content synchronized with other earphones.

2. The audio sharing method based on LE Audio Bluetooth headphones as described in claim 1, characterized in that: The S1 pairing and connection includes the following steps: S11: Initiate pairing, enabling pairing mode on the Bluetooth headset and audio source device by pressing a specific button on the device or through an option in the device settings; S12: Discover devices and initiate the Bluetooth pairing process on the audio source device; S13: Select Device. The user selects the Bluetooth headset to connect from the list of audio source devices. S14: Initiate connection: The audio source device sends a connection request to the selected Bluetooth headset; S15: Security Authentication. During the pairing process, the Bluetooth device performs security authentication to ensure that the established connection is secure. S15: Pairing Confirmation. The Bluetooth headset will display a connection request on its screen or through an audio prompt. The user must confirm the pairing request to establish a connection. S16: Connection complete. Once pairing is confirmed, a Bluetooth connection is established between the audio source device and the Bluetooth headset. S17: Data exchange. Once pairing and connection are complete, data exchange can occur between the Bluetooth headset and the audio source device. The audio source device transmits an audio stream to the Bluetooth headset, which then receives and plays the audio from the audio source.

3. The audio sharing method based on LE Audio Bluetooth headphones as described in claim 2, characterized in that: The S2 audio stream partitioning includes the following steps: S21: Link establishment: After the Bluetooth headset and the audio source device are successfully paired and connected, a Bluetooth link is established between them. S22: Audio protocol selection. Bluetooth headphones support multiple audio protocols. The audio source device selects the appropriate protocol based on the protocols it supports and the capabilities of the Bluetooth headphones. S23: Audio encoding and decoding. An audio protocol is selected. The audio source device encodes the audio signal and then sends it to the Bluetooth headset via the Bluetooth link. After receiving the audio data, the Bluetooth headset decodes it to restore the original audio signal. S24: Transmission and buffering: Audio data is transmitted in packets via the Bluetooth link, with data transmission occurring at a certain packet size and transmission rate; the receiving Bluetooth headset uses a buffer to manage the received audio data to ensure the continuity and stability of the audio stream; S25: Audio processing and amplification. After audio data decoding and buffering, the Bluetooth headset performs audio processing, including audio equalization, volume adjustment, and ambient noise cancellation; then, the processed audio signal is amplified to drive the headset's speaker, enabling the user to hear the audio.

4. The audio sharing method based on LE Audio Bluetooth headphones as described in claim 1, characterized in that: The allocation of BIS channels in step S3 includes the following steps: S31: Link establishment, including the pairing and connection process between Bluetooth devices; S32: BIS channel negotiation. After the link is established, the Bluetooth device and the audio source device negotiate the allocation of the BIS channel. S33: BIS channel allocation. During the negotiation process, the audio source device will request one or more BIS channels from the Bluetooth device. S34: Bandwidth allocation. Once the BIS channel allocation is complete, bandwidth allocation will be performed between the Bluetooth device and the audio source device to ensure that each BIS channel receives sufficient transmission bandwidth to meet the requirements of the audio data. S35: Real-time audio transmission. The audio source device segments real-time audio data into small data packets and sends them to the Bluetooth device through the BIS channel.

5. The audio sharing method based on LE Audio Bluetooth headphones as described in claim 1, characterized in that: The S4 time-division multiplexing transmission includes the following steps: S41: Negotiate time slot allocation. The master and slave devices negotiate to determine the number and order of time slots allocated to the slave device. S42: Establish connection. The master device sends a connection request to the slave device, requesting to establish an audio transmission connection. S43: Time slot allocation, the master device allocates a set of time slots to the slave device for transmitting multiple audio streams; S44: Data transmission. In a specified time slot, the master device sends audio data to the slave device via Bluetooth connection; the master device segments the corresponding audio data and sends it to the slave device according to the time slot allocation. S45: Data reception and decoding. The device receives audio data sent by the master device, performs decoding processing, and transmits the decoded audio data to the speaker of the Bluetooth headset for playback. S46: Synchronization management, the master and slave devices need to synchronize the transmission between time slots through a clock signal; S47: Continuous transmission. The master and slave devices can continuously transmit multiple audio streams, allowing users to hear the left and right channels simultaneously, achieving a stereo effect.

6. The audio sharing method based on LE Audio Bluetooth headphones as described in claim 1, characterized in that: Before establishing a connection, you need to ensure that both the Bluetooth headset and the audio source device support LE Audio's Multi-Stream Audio feature.

7. The audio sharing method based on LE Audio Bluetooth headphones as described in claim 2, characterized in that: The S15 security authentication is achieved through a PIN code or a randomly generated security key.

8. The audio sharing method based on LE Audio Bluetooth headphones as described in claim 3, characterized in that: The S22 audio protocol selection can use protocols including Advanced Audio Distribution Profile, Low Complexity Subband Coding, AAC, and aptX.

9. The audio sharing method based on LE Audio Bluetooth headphones as described in claim 4, characterized in that: In the S32BIS channel negotiation, after the link is established, the Bluetooth device and the audio source device will negotiate the allocation of the BIS channel; this is usually implemented using the Logical Link Control and Adaptation Protocol, or L2CAP for short.

10. The audio sharing method based on LE Audio Bluetooth headphones as described in claim 1, characterized in that: The headphones and audio source device need to be set to pairable mode.

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