WO2021208359A1 - 蓝牙tws设备及其主设备、从设备和设备间的数据传输方法 - Google Patents
蓝牙tws设备及其主设备、从设备和设备间的数据传输方法 Download PDFInfo
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- 230000005540 biological transmission Effects 0.000 claims description 67
- 230000004044 response Effects 0.000 claims description 6
- 210000005069 ears Anatomy 0.000 description 3
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- 238000010586 diagram Methods 0.000 description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0016—Hand-off preparation specially adapted for end-to-end data sessions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/14—Direct-mode setup
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- the wireless communication technology of the present application specifically relates to a data transmission method between Bluetooth TWS devices, a data transmission method of a Bluetooth TWS master device, a data transmission method of a Bluetooth TWS slave device, and a Bluetooth TWS device.
- the main and auxiliary ears In order to ensure that the main ear and the auxiliary ear are either in the receiving mobile phone data communication mode at the same time, or are in the communication mode between the main and auxiliary ears at the same time, the main and auxiliary ears
- the Bluetooth link between the ears needs to enter a periodic fixed-point communication state similar to the sniff working mode. In this working state, the Bluetooth link between the primary ear and the secondary ear only occupies a small amount of bandwidth, leaving more Bluetooth bandwidth for the mobile phone to communicate with the primary ear, and the secondary ear is also receiving data from the mobile phone at this time. And the secondary ear can know when the primary ear will send data or polling packets to itself, and only need to switch to the primary and secondary links for communication at that moment.
- the bandwidth allocation is performed in the above manner, when the fixed-point communication period of the TWS link is set to be larger, the data exchange delay between TWS will be very large, especially in the interference environment.
- the fixed-point communication cycle of the TWS link is set to be smaller, it will cause the TWS link to occupy more Bluetooth bandwidth, and then affect the communication with the mobile phone.
- the main purpose of the embodiments of the present invention is to provide a data transmission method between Bluetooth TWS devices, so as to achieve the smallest communication delay between TWS devices and the smallest occupied Bluetooth bandwidth.
- the embodiment of the present invention is implemented as follows, a data transmission method between Bluetooth TWS devices, the method includes:
- the master device After the master device and the slave device receive the data packet of the Bluetooth device at the Bluetooth link time N, the master device switches to the state of receiving the first auxiliary frame;
- the slave device If the slave device has additional data to send to the master device, after sending the first auxiliary frame request data transmission to the master device, the slave device switches to a state of receiving a second auxiliary frame;
- the master device switches to TWS link communication after sending the second auxiliary frame to the slave device at the Bluetooth link time N+1;
- the slave device After receiving the second auxiliary frame, the slave device switches to the TWS link communication, and the slave device sends the additional data to the master device.
- an embodiment of the present invention also provides a data transmission method between Bluetooth TWS devices, and the method further includes:
- the master device and the slave device receive the data packet of the Bluetooth device at the time N of the Bluetooth link;
- the slave device switches to the state of receiving the second auxiliary frame
- the master device switches to TWS link communication after sending the second auxiliary frame to the slave device at the Bluetooth link time N+1;
- the slave device After receiving the second auxiliary frame, the slave device switches to the TWS link communication;
- the master device sends the additional data to the slave device.
- the data packet is a valid data packet, an empty packet or a polling packet.
- the first auxiliary frame includes a request data transmission flag; the second auxiliary frame includes a communication switching command.
- the second auxiliary frame includes a communication switching command.
- the method further includes: The master device sends data to the Bluetooth device at the Bluetooth link time N+1;
- the method further includes: The master device directly sends the second auxiliary frame to the slave device and switches to TWS link communication.
- the method further includes, when the additional data transmission is completed, the master device and the slave device switch back to the communication link with the Bluetooth device.
- the master device or the slave device receives a response from the counterpart device, and there is no more data to be sent to the counterpart, and the counterpart device does not send data that needs to be responded, the additional data transmission is completed.
- the master device switches to the TWS link communication, if the TWS link communication cannot be established with the slave device after a predetermined number of consecutive connections, it switches back to communication with the Bluetooth device over time.
- the method further includes presetting the maximum duration of a single communication of the TWS link, and extending the interval waiting time of the additional data transmission according to the number of retransmissions of the additional data.
- sending the additional data from the slave device to the master device includes: the slave device broadcasts the additional data according to a predetermined time sequence, and the number of times of the broadcast is preset.
- the sending of the additional data by the master device to the slave device further includes: the master device broadcasts the additional data according to a predetermined time sequence, and the number of times of the broadcast is preset.
- the purpose of the embodiments of the present invention is to provide a data transmission method for a Bluetooth master device, which realizes the smallest communication delay between TWS devices and the smallest occupied Bluetooth bandwidth.
- the embodiments of the present invention are implemented in this way and include:
- the purpose of the embodiments of the present invention is to provide a data transmission method for Bluetooth TWS slave devices, which realizes the smallest communication delay between TWS devices and the smallest occupied Bluetooth bandwidth.
- the embodiment of the present invention is implemented as follows.
- a data transmission method of a Bluetooth TWS slave device includes:
- the first auxiliary frame After receiving the data packet of the Bluetooth device at the time N of the Bluetooth link, the first auxiliary frame is sent to request the data to be sent and then switched to the state of receiving the second auxiliary frame;
- the purpose of the embodiments of the present invention is to provide a Bluetooth TWS device, which realizes the smallest communication delay between TWS devices and the smallest occupied Bluetooth bandwidth.
- the embodiment of the present invention is implemented in this way.
- a Bluetooth TWS device includes a master device and a slave device. The master device is used to switch to receiving the first auxiliary frame state after receiving the data packet of the Bluetooth device at the Bluetooth link time N, At Bluetooth link time N+1, switch to TWS link communication after sending the second auxiliary frame to the slave device; or switch to receiving the second auxiliary frame when additional data is sent;
- the slave device is used to send the first auxiliary frame to the master device when additional data is to be sent, and then switch to receiving the second auxiliary frame after sending the data; or to switch to the state of receiving the second auxiliary frame when the second auxiliary frame is received Then, switch to the TWS link communication, and send the additional data to the master device.
- the embodiment of the present invention has the following effect: the master device and the slave device simultaneously receive data from the Bluetooth device.
- the slave device When the slave device has additional data that needs to be sent to the master device, it sends a request to the master device through the first auxiliary frame.
- the master device When the master device has additional data that needs to be sent to the slave device, or the master device receives an additional data sending request from the slave device, the master device sends a communication switching command to the slave device through the second auxiliary frame. Then, the master device and the slave device switch to TWS communication together.
- the master device or the slave device quickly switches back to communicate with the Bluetooth device.
- the first auxiliary frame and the second auxiliary frame do not occupy the additional bandwidth of the Bluetooth link, and can enable the data between the master device and the slave device to interact quickly with minimal delay. Once the additional data transmission is completed, it switches back to communication with the Bluetooth device, which occupies the smallest Bluetooth bandwidth.
- Figure 1 shows a flow chart of a method for data transmission between Bluetooth TWS devices provided by this application
- FIG. 2 shows a flow chart of another method for data transmission between Bluetooth TWS devices provided by this application
- FIG. 3 shows a schematic diagram of a sequence of a Bluetooth device and a TWS device provided by the present application
- FIG. 4 shows a flow chart of another method for data transmission between Bluetooth TWS devices provided by this application.
- Fig. 5 shows a flowchart of another data transmission method between Bluetooth TWS devices provided by the present application.
- a method for data transmission between Bluetooth TWS devices includes the following steps:
- S103 The master device switches to TWS link communication after sending the second auxiliary frame to the slave device at the Bluetooth link time N+1;
- the TWS device includes a master device and a slave device.
- the master device establishes a wireless connection with the Bluetooth device, and the slave device learns some relevant parameters of the wireless link from the master device in a direct or indirect manner.
- the slave device establishes a virtual connection with the Bluetooth device according to the obtained parameters.
- the virtual connection can receive the data sent by the Bluetooth device to the main device, and can also be converted to a real connection when needed, and send data to the Bluetooth device.
- the slave device can directly or indirectly obtain the relevant parameters of the link established by the master device and the Bluetooth device.
- the slave device establishes a connection with the master device, and then the master device transmits the relevant parameters to the slave device.
- the master device broadcasts the relevant parameters, and the slave device receives it through scanning.
- the slave device obtains relevant parameters from the master device through OOB communication.
- the master device gives relevant parameters to a third-party device, and then the slave device obtains the relevant parameters from the third-party device to establish a virtual connection.
- the master device and the Bluetooth device establish a standard Bluetooth ACL link, which is a reliable connection. Regardless of whether it is a reliable connection between the master device and the Bluetooth device or a virtual connection between the slave device and the Bluetooth device, the TWS device can obtain data from the Bluetooth device.
- FIG. 3 it is a schematic diagram of the timing of data transmission between the Bluetooth device and the master device or the slave device.
- the Bluetooth device sends a data packet to the master device at the Bluetooth link time N, and the slave device is also at the Bluetooth link time. N receives this data packet.
- the data packet can be a valid data packet, an empty packet or a polling packet, that is to say, the slave device and the master device may receive valid data when receiving the data packet of the Bluetooth device. , It can also receive no data or polling data.
- the master device After the master device and the slave device have received the data packet sent by the Bluetooth device, the master device switches to the state of receiving the first auxiliary frame, and if the slave device has additional data to send to the master device at this time, it will switch to sending the first auxiliary frame.
- the first auxiliary frame sent contains the "request data transmission flag".
- the slave device After the slave device sends the first auxiliary frame request data to the master device, the slave device switches to the state of receiving the second auxiliary frame.
- the master device After the master device sends a packet to the Bluetooth device at the Bluetooth link time N+1, if it agrees to the additional data sending request of the slave device, it will then send a second auxiliary frame containing the "communication switching command" to the slave device.
- the master device After the master device finishes sending the second auxiliary frame, it switches to TWS link communication and prepares to receive the data sent by the slave device. After the slave device receives the second auxiliary frame containing the "communication switching command", it switches to the TWS link communication and sends the additional data that needs to be transmitted to the master device.
- the additional data here generally refers to the upper-layer user data, mainly the TWS device Synchronization of various information between, such as fine-tuning the playback speed, keeping the master and slave devices playing audio data at the same time, such as synchronizing button information, synchronizing battery information, synchronizing prompt sound, synchronizing working status, etc., and can also include underlying link control Data, such as frequency hopping sequence, power control, or no data, such as empty packets, is only used to synchronize the timing of the TWS device.
- link control Data such as frequency hopping sequence, power control, or no data, such as empty packets
- the master device and the slave device switch back to the communication link with the Bluetooth device.
- the master device or the slave device receives a response from the other device, and there is no more data to send to the other party, and the other device does not send data that needs to be answered, the additional data transmission is completed, and the response can be It is done through the first auxiliary frame or the second auxiliary frame, or the other party's device is notified by broadcast.
- the master device may not respond to the first auxiliary frame sent by the slave device, but directly send the master device.
- the additional data that needs to be sent is sent, and the process is as follows:
- a data transmission method between Bluetooth TWS devices includes the following steps:
- the master device and the slave device receive data packets of the Bluetooth device at the Bluetooth link time N; if the master device has additional data to send to the slave device, the slave device switches to a state of receiving a second auxiliary frame;
- S202 The master device switches to TWS link communication after sending the second auxiliary frame to the slave device at the Bluetooth link time N+1;
- S204 The master device sends the additional data to the slave device.
- the slave device has no additional data to send to the master device or the master device needs to send additional data, when the master device and the slave device.
- the slave device switches to the state of receiving the second auxiliary frame; after the master device sends the packet to the Bluetooth device at the Bluetooth link time N+1, if there is additional data that needs to be sent to the slave device, send The second auxiliary frame containing the "communication switching command" is sent to the slave device; after the master device sends the second auxiliary frame, it switches to TWS link communication and sends data to the slave device.
- the slave device switches to TWS link communication, and prepares to receive data sent by the master device, and the master device sends the additional data to the slave device.
- the present invention provides another embodiment.
- whether the master device or the slave device has additional data that needs to be sent, at the Bluetooth link time N+1 if the master device receives the Bluetooth device data at the Bluetooth link time N
- the packet before the step of sending the second auxiliary frame to the slave device and switching to TWS link communication, further includes: the master device sends data to the Bluetooth device at the Bluetooth link time N+1. Specifically, as shown in FIG.
- this embodiment includes the following steps: S401, after the master device and the slave device receive the data packet of the Bluetooth device at the Bluetooth link time N, the master device switches to the state of receiving the first auxiliary frame S402, if the slave device has additional data to send to the master device, after sending the first auxiliary frame request data to the master device, the slave device switches to the state of receiving the second auxiliary frame; S403, the The master device at the Bluetooth link time N+1, if the master device receives the data packet of the Bluetooth device at the Bluetooth link time N; S404, the master device sends data to the Bluetooth device at the Bluetooth link time N+1, The slave device sends the second auxiliary frame and switches to TWS link communication; S405, after receiving the second auxiliary frame, the slave device switches to the TWS link communication, and the slave device sends the The main device sends the additional data.
- the present invention provides another embodiment.
- the master device does not receive the data packet of the Bluetooth device at the Bluetooth link time N, the data packet is sent to the slave device.
- the master device Before the step of switching the second auxiliary frame to TWS link communication, it further includes: the master device directly sends the second auxiliary frame to the slave device and switching to TWS link communication. Specifically, as shown in FIG.
- this embodiment includes the following steps: S501, after the master device and the slave device receive the data packet of the Bluetooth device at the Bluetooth link time N, the master device switches to the state of receiving the first auxiliary frame S502, if the slave device has additional data to send to the master device, after sending the first auxiliary frame request data to the master device, the slave device switches to the state of receiving the second auxiliary frame; S503, the master device At the Bluetooth link time N+1, if the master device does not receive the data packet of the Bluetooth device at the Bluetooth link time N; S504, the master device directly sends the second auxiliary frame to the slave device and switches to the TWS link Communication; S505, after receiving the second auxiliary frame, the slave device switches to the TWS link communication, and the slave device sends the additional data to the master device.
- the embodiment of the present invention provides a preferred solution.
- the predetermined number of times can be set in advance during product design. Generally, it can be set at least 2 times as needed. Of course, 3 times, 4 times or more can be set according to different design schemes.
- the communication of the TWS link occupies too much bandwidth, which may affect the communication of the Bluetooth device link.
- the present invention also provides a preferred embodiment.
- the above-mentioned process further includes pre-setting the maximum duration of a single communication of the TWS link, and extending the total duration according to the number of retransmissions of the additional data.
- the interval waiting time for additional data transmission It is preset to limit the maximum duration of a single TWS link communication. For example, the duration of a single TWS link communication cannot exceed 20 milliseconds or 15 milliseconds.
- the length of time can be adjusted according to the product design.
- the master device has a data packet that has been retransmitted three times in a TWS communication without success. Then the main device needs to wait 30ms for the next additional data transmission interval. The more retransmissions are set, the longer the waiting time is.
- the above embodiments describe the additional data transmission method after the master device and the slave device establish the TWS link.
- the TWS link is a link with links that requires two-way interaction, and a link with flow control and response. Its advantages are If the master and slave devices have additional data to be transmitted, a switchover can be completed. In addition, it is convenient to maintain the connection status of the link for the connected TWS teaming method.
- the data transmission can also be one-way transmission, and the data transmission is one-way interaction without flow control and no response.
- the main device has additional data to send, after switching to the TWS link, the data will be broadcast to the other party according to the agreed time sequence, and the number of broadcasts can be set.
- the slave device can also broadcast data to the master device.
- the foregoing embodiment describes the technical solution for establishing communication and data transmission between the two parties from the perspective of the interaction between the master device and the slave device.
- a data transmission method of a Bluetooth master device includes the following steps:
- the embodiment of the present invention also provides another method for data transmission of a Bluetooth master device, including the following steps:
- the master device receives the data packet from the Bluetooth device at Bluetooth time N, it switches to the state of receiving the first auxiliary frame; at this time, if the external slave device has additional data that needs to be sent to the master device, then the master device receives the external For the first auxiliary frame containing the "request data transmission" command sent from the device, the master device forwards the data in a unified manner. After the master device sends a packet to the Bluetooth device at the Bluetooth link time N+1, it sends a "communication switching command" The second auxiliary frame is sent to the external slave device, and then switched to TWS link communication, and the TWS link is established with the external slave device to receive additional data sent by the external slave device.
- the master device needs to send additional data
- the master device after the master device receives the data packet from the Bluetooth device at Bluetooth time N, the master device sends the packet to the Bluetooth device at Bluetooth link time N+1, and then sends a "communication switching command"
- the second auxiliary frame is given to the slave device, and then switched to the TWS link communication. After the TWS link is established with the external slave device, the additional data is sent to the external slave device.
- a data transmission method for a Bluetooth slave device includes the following steps:
- the first auxiliary frame After receiving the data packet of the Bluetooth device at the time N of the Bluetooth link, the first auxiliary frame is sent to request the data to be sent and then switched to the state of receiving the second auxiliary frame;
- the embodiment of the present invention also provides another method for data transmission from a Bluetooth slave device, including the following steps:
- the slave device After receiving the data packet from the Bluetooth device at the Bluetooth link time N, the slave device sends the first auxiliary frame containing the "request data transmission" command to request data transmission Then switch to the state of receiving the second auxiliary frame; at this time, if the external master device agrees to receive data transmission, it will send the second auxiliary frame to the slave device, then the slave device at the Bluetooth link time N+1, the reception contains "communication switching After the second auxiliary frame of "Command", it switches to TWS link communication to establish a TWS link with the external master device, and send additional data to the external master device.
- the slave device will directly switch to receiving the second auxiliary frame state after receiving the data packet of the Bluetooth device at the Bluetooth link time N; then the slave device At the Bluetooth link time N+1, after receiving the second auxiliary frame containing the "communication switching command", it switches to the TWS link communication and establishes a TWS link with the external master device, and receives additional data sent by the external master device.
- the embodiments of the present invention also correspondingly provide a Bluetooth TWS device that implements the above data transmission method.
- the embodiment of the present invention is implemented in this way.
- a Bluetooth TWS device includes a master device and a slave device. Device, the master device is configured to switch to receiving the first auxiliary frame state after receiving the data packet of the Bluetooth device at the Bluetooth link time N, and send the second auxiliary frame to the slave device at the Bluetooth link time N+1 Switch to TWS link communication after the frame; or used to switch to receiving the second auxiliary frame state when additional data is sent;
- the slave device is used to send the first auxiliary frame to the master device when additional data is to be sent, and then switch to receiving the second auxiliary frame after sending the data; or to switch to the state of receiving the second auxiliary frame when the second auxiliary frame is received Then, switch to the TWS link communication, and send the additional data to the master device.
- the master device establishes a wireless connection with the Bluetooth device, and the slave device learns some relevant parameters of the wireless link from the master device in a direct or indirect manner.
- the slave device establishes a virtual connection with the Bluetooth device according to the obtained parameters.
- the virtual connection can receive the data sent by the Bluetooth device to the master device, and with the help of the first auxiliary frame, the virtual connection can be turned into a reliable connection, and the data can be sent to the Bluetooth device. Therefore, whether it is a master device or a slave device in the embodiment of the present invention, it is only described from the perspective of the master and slave realized in the data transmission process.
- the master device can be converted into a slave device, and the slave device is also It can be converted to a master device, and those skilled in the art can understand that the master device and slave device described here are only for data transmission, and do not refer to the actual main earphone or auxiliary earphone of the TWS earphone.
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Claims (17)
- 一种蓝牙TWS设备间的数据传输方法,其特征在于,所述方法包括:主设备和从设备在蓝牙链路时刻N接收蓝牙设备的数据包后,所述主设备切换到接收第一辅助帧状态;如果所述从设备有额外数据发送给主设备,向所述主设备发送所述第一辅助帧请求数据发送后,所述从设备切换到接收第二辅助帧状态;所述主设备在蓝牙链路时刻N+1,向所述从设备发送所述第二辅助帧后切换到TWS链路通信;所述从设备接收到所述第二辅助帧后,切换到所述TWS链路通信,所述从设备向所述主设备发送所述额外数据。
- 一种蓝牙TWS设备间的数据传输方法,其特征在于,所述方法包括:主设备和从设备在蓝牙链路时刻N接收蓝牙设备的数据包;如果所述主设备有额外数据发送给所述从设备,所述从设备切换到接收第二辅助帧状态;所述主设备在蓝牙链路时刻N+1,向所述从设备发送所述第二辅助帧后切换到TWS链路通信;所述从设备接收到所述第二辅助帧后,切换到所述TWS链路通信;所述主设备向所述从设备发送所述额外数据。
- 根据权利要求1或2所述的蓝牙TWS设备间的数据传输方法,其特征在于,所述数据包为有效数据包、空包或者轮询包。
- 根据权利要求3所述的蓝牙TWS设备间的数据传输方法,其特征在于,所述第一辅助帧包含请求数据发送标志;所述第二辅助帧包含通信切换命令。
- 根据权利要求3所述的蓝牙TWS设备间的数据传输方法,其特征在于,所述第二辅助帧包含通信切换命令。
- 根据权利要求3所述的蓝牙TWS设备间的数据传输方法,其特征在于,如果所述主设备在蓝牙链路时刻N接收到所述蓝牙设备的数据包,在所 述向所述从设备发送所述第二辅助帧并切换到TWS链路通信的步骤之前进一步包括:所述主设备在蓝牙链路时刻N+1给所述蓝牙设备发送数据;如果所述主设备在蓝牙链路时刻N没有接收到所述蓝牙设备的数据包,在所述向所述从设备发送所述第二辅助帧并切换到TWS链路通信的步骤之前进一步包括:所述主设备直接向所述从设备发送所述第二辅助帧并切换到TWS链路通信。
- 根据权利要求4~6任一所述的蓝牙TWS设备间的数据传输方法,其特征在于,所述方法进一步包括,当所述额外数据传输完成后,所述主设备和所述从设备切换回与所述蓝牙设备的通信链接。
- 根据权利要求4~6任一所述的蓝牙TWS设备间的数据传输方法,其特征在于,当所述主设备或所述从设备收到对方设备的应答,且没有更多的数据需要发送给对方,且对方设备也没有发送需要应答的数据,则所述额外数据传输完成。
- 根据权利要求4~6任一所述的蓝牙TWS设备间的数据传输方法,其特征在于,当所述主设备切换到所述TWS链路通信后,如果在预定的次数连续连接后都无法与所述从设备建立TWS链路通信,则超时切换回与蓝牙设备通信。
- 根据权利要求4~6任一所述的蓝牙TWS设备间的数据传输方法,其特征在于,所述方法进一步包括,预先设定所述TWS链路单次通信的最大时长,根据所述额外数据重传的次数,延长所述额外数据传输的间隔等待时间。
- 根据权利要求4~6任一所述的蓝牙TWS设备间的数据传输方法,其特征在于,所述从设备向所述主设备发送所述额外数据包括:所述从设备按照预定时序将所述额外数据广播,所述广播的次数预先设定。
- 根据权利要求4~6任一所述的蓝牙TWS设备间的数据传输方法,其特征在于,所述主设备向从设备发送所述额外数据进一步包括:所述主设备按照预定时序将所述额外数据广播,所述广播的次数预先设定。
- 一种蓝牙TWS主设备的数据传输方法,其特征在于,包括:在蓝牙链路时刻N接收蓝牙设备的数据包后,切换到接收第一辅助帧状 态;接收第一辅助帧;在蓝牙链路时刻N+1,发送第二辅助帧后切换到TWS链路通信;接收额外数据。
- 一种蓝牙TWS主设备的数据传输方法,其特征在于,包括:在蓝牙链路时刻N接收蓝牙设备的数据包;如果有额外数据发送给从设备,在蓝牙链路时刻N+1,发送第二辅助帧后切换到TWS链路通信;发送所述额外数据。
- 一种蓝牙TWS从设备的数据传输方法,其特征在于,包括:在蓝牙链路时刻N接收蓝牙设备的数据包后,发送第一辅助帧请求数据发送后切换到接收第二辅助帧状态;在蓝牙链路时刻N+1,接收第二辅助帧后切换到TWS链路通信;发送额外数据。
- 一种蓝牙TWS从设备的数据传输方法,其特征在于,包括:在蓝牙链路时刻N接收蓝牙设备的数据包后切换到接收第二辅助帧状态;在蓝牙链路时刻N+1,接收第二辅助帧后切换到TWS链路通信;接收额外数据。
- 一种蓝牙TWS设备,包括主设备和从设备,其特征在于,所述主设备用于在蓝牙链路时刻N接收蓝牙设备的数据包后切换到接收第一辅助帧状态,在蓝牙链路时刻N+1,向所述从设备发送所述第二辅助帧后切换到TWS链路通信;或用于当有额外数据发送时,切换到接收第二辅助帧状态;所述从设备用于当有额外数据发送时,向所述主设备发送所述第一辅助帧请求数据发送后切换到接收第二辅助帧状态;或用于在接收到所述第二辅助帧后,切换到所述TWS链路通信,向所述主设备发送所述额外数据。
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CN113613223B (zh) * | 2021-06-29 | 2024-08-09 | 成都市安比科技有限公司 | 蓝牙音频系统的主从切换方法、第一设备及第二设备 |
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