CN115103057B

CN115103057B - Wireless communication method and wireless audio playing assembly

Info

Publication number: CN115103057B
Application number: CN202210691611.XA
Authority: CN
Inventors: 童伟峰; 张亮
Original assignee: Bestechnic Shanghai Co Ltd
Current assignee: Bestechnic Shanghai Co Ltd
Priority date: 2022-05-19
Filing date: 2022-05-19
Publication date: 2023-12-15
Anticipated expiration: 2042-05-19
Also published as: CN115103057A

Abstract

The application relates to a wireless communication method and a wireless audio playing component. The wireless communication method is applicable to a wireless Audio playing component comprising at least two Audio playing devices, wherein each Audio playing device supports an LE Audio mode, and at least one Audio playing device supports a DLNA protocol. A first DLNA connection is established between a first audio playing device supporting a DLNA protocol and a first intelligent device, control information containing identification information of a target DMS terminal is received through the first DLNA connection, and first audio data is acquired from the target DMS terminal based on the control information. And obtaining broadcast Audio data applicable to the LE Audio mode based on the first Audio data, and transmitting the broadcast Audio data to other Audio playing devices in the wireless Audio playing component through the LE Audio mode so as to be received and played by the other Audio playing devices. According to the wireless communication method, the Audio data acquired from the intelligent equipment through the DLNA can be shared with a plurality of Audio playing devices in the LE Audio mode under the condition that the intelligent equipment does not need to support the LE Audio mode.

Description

Wireless communication method and wireless audio playing assembly

Technical Field

The present application relates to the field of wireless communication technologies, and in particular, to a wireless communication method and a wireless audio playing component using the same.

Background

Today's social life puts a demand for social sharing on audio playback. DLNA was first proposed by sony, intel, microsoft, etc., and is called DIGITAL LIVING NETWORK ALLIANCE, which aims to solve the interconnection and interworking between wireless NETWORKs and wired NETWORKs, such as computers and other electronic products, such as mobile phones and tablets, between wireless NETWORKs or wired NETWORKs, so that photos, videos and music can be shared in the above devices. The intelligent terminal equipment such as a mobile phone, a tablet personal computer and a PC machine can transmit music files to a sound box supporting DLNA through a DLNA technology to play, but most music player software can only support and connect one DLNA sound box equipment, and cannot meet the playing requirement of a multichannel stereo sound box.

The LE Audio is a new wireless communication mode, and the special LE Audio broadcasting function enables the user to conveniently share own music to other users or groups of users, so that better Audio sharing experience is provided. Although LE Audio broadcasting is attempted to perform Audio sharing functions, such functions typically rely on portable smart devices (e.g., without limitation, cell phones) that support LE Audio technology. However, since the LE Audio technology has just begun to be popularized, most mobile phones on the market often have DLNA functions, but only few mobile phones support the LE Audio technology at the same time, and only in order to increase the Audio sharing function, the cost of replacing the intelligent device (such as a mobile phone) supporting the LE Audio technology is too high for users, which hinders the popularization and application of the Audio sharing function.

Disclosure of Invention

The present application has been made to solve the above-mentioned problems occurring in the prior art.

The wireless communication method and the wireless Audio playing component are needed, audio data acquired from the intelligent device or the cloud end through DLNA can be shared in the wireless Audio playing component in an LE Audio mode by utilizing one Audio playing device in the component, so that the intelligent device can conveniently and low-cost enable a user to enjoy an Audio sharing function by using LE Audio broadcasting under the condition that the LE Audio mode is not needed to be supported, the wireless Audio playing component can receive Audio data from the intelligent device supporting the DLNA technology more flexibly, the wireless Audio playing component is suitable for application scenes of music sharing among different wireless Audio playing components (such as among ear-pair wireless earphones of different users or among a plurality of sound boxes), and the Audio listening experience of the user is improved.

According to a first aspect of the present application, there is provided a wireless communication method, adapted to a wireless Audio playing assembly, the wireless Audio playing assembly comprising at least two Audio playing devices, each of the at least two Audio playing devices supporting an LE Audio mode, the at least two Audio playing devices comprising at least one Audio playing device supporting a DLNA protocol. The wireless communication method comprises the steps that a first audio playing device in the at least one audio playing device supporting the DLNA protocol establishes a first DLNA connection with an intelligent device based on the DLNA protocol, wherein the intelligent device supports the DLNA protocol; receiving first control information which at least comprises identification information of a target DMS (digital living network management system) terminal and is sent by the intelligent equipment through the first DLNA connection, and acquiring first audio data from the target DMS terminal based on the first control information; obtaining first broadcast Audio data applicable to the LE Audio mode based on the obtained first Audio data; and transmitting the first broadcast Audio data to other Audio playing devices except the first Audio playing device in the wireless Audio playing assembly through an LE Audio mode so as to be received and played by the other Audio playing devices.

According to a second aspect of the present application, there is provided a wireless Audio playback assembly comprising at least two Audio playback devices, each of the at least two Audio playback devices comprising an LE Audio communication module, a first Audio playback device of the at least two Audio playback devices further comprising a first DLNA processing module and a first conversion codec, the first DLNA processing module being configured to: based on a DLNA protocol, establishing a first DLNA connection with an intelligent device, wherein the intelligent device supports the DLNA protocol; and receiving first control information which at least comprises identification information of a target DMS terminal and is sent by the intelligent equipment through the first DLNA connection, and acquiring first audio data from the target DMS terminal based on the first control information. The first conversion codec is configured to: and performing coding mode conversion on the acquired first Audio data to obtain first broadcast Audio data applicable to the LE Audio mode. The first LE Audio communication module in the first Audio playback apparatus is configured to: and transmitting the first broadcast Audio data to LE Audio communication modules in other Audio playing devices except the first Audio playing device in the wireless Audio playing assembly through an LE Audio mode so as to be received and played by the other Audio playing devices.

Compared with the prior art, the embodiment of the application has the beneficial effects that: the Audio playing device in the wireless Audio playing assembly is connected with the Audio data acquired from the intelligent device through the DLNA, then the acquired Audio data is converted into broadcast Audio data used in the LE Audio mode, and LE Audio sharing is carried out in the wireless Audio playing assembly in the LE Audio mode, so that the intelligent device can conveniently and low-cost use LE Audio broadcasting to enjoy the Audio sharing function under the condition that the intelligent device originally only supports the DLNA protocol and does not need to support the LE Audio mode, the application scene of music sharing is expanded (for example, the point-to-point single device is connected and expanded to a plurality of wireless earphones, or Audio broadcasting sharing is carried out among a plurality of sound boxes, and the like), and meanwhile, the wireless Audio playing assembly can receive the Audio data from the intelligent device in a more flexible mode, and the Audio listening experience of the user is improved.

Drawings

In the drawings, which are not necessarily drawn to scale, like numerals may describe similar components in different views. The same reference numerals with letter suffixes or different letter suffixes may represent different instances of similar components. The accompanying drawings illustrate various embodiments by way of example in general and not by way of limitation, and together with the description and claims serve to explain the disclosed embodiments. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. Such embodiments are illustrative and not intended to be exhaustive or exclusive of the present apparatus or method.

FIG. 1 is a schematic diagram showing the partial composition of a wireless audio playback assembly and its associated devices in accordance with an embodiment of the present application;

fig. 2 shows a schematic diagram of an exemplary timing of a wireless Audio playback component broadcasting multi-channel Audio data via LE Audio mode according to an embodiment of the present application;

fig. 3 (a) shows a schematic illustration of a wireless audio playback assembly according to another embodiment of the application;

fig. 3 (b) is a schematic diagram illustrating a wireless Audio playing component sharing Audio data via LE Audio broadcasting according to another embodiment of the present application;

fig. 4 shows a flow chart of a method of wireless communication of a wireless audio playback component in accordance with an embodiment of the present application;

fig. 5 shows a flow chart of a method of wireless communication of a wireless audio playback component in accordance with another embodiment of the present application.

Detailed Description

The present application will be described in detail below with reference to the drawings and detailed description to enable those skilled in the art to better understand the technical scheme of the present application. Embodiments of the present application will be described in further detail below with reference to the drawings and specific examples, but not by way of limitation. The terms "first," "second," and "third" as used in this disclosure are merely intended to distinguish between corresponding features and do not necessarily represent such ordering, nor do they necessarily represent singular forms alone.

The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The terms "first earphone" and "second earphone" are used in the present application only to distinguish, for example, in other embodiments, the "first earphone" may be the "second earphone" and the "second earphone" may be the "first earphone". The word "comprising" or "comprises" and the like means that elements preceding the word encompass the elements recited after the word, and not exclude the possibility of also encompassing other elements. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

In the present application, when it is described that a specific device is located between a first component and a second component, an intervening device may or may not be present between the specific device and the first device or the second device. When it is described that a specific device is connected to another device, the specific device may be directly connected to the other device without an intervening device, or may be directly connected to the other device without an intervening device. In the present application, the arrows shown in the figures of the respective steps are merely examples of the execution sequence, and the technical solution of the present application is not limited to the execution sequence described in the embodiments, and the respective steps in the execution sequence may be performed in combination, may be performed in decomposition, and may be exchanged as long as the logical relationship of the execution contents is not affected.

All terms (including technical or scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs, unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

Fig. 1 is a schematic diagram showing a part of the components of a wireless audio playing assembly and related devices according to an embodiment of the present application. A wireless audio playing component 1 and a smart device 2 according to an embodiment of the application are shown in fig. 1. The smart device 2 may be any device capable of audio playback and having network connection capability such as bluetooth, WIFI, etc. such as a smart phone, a tablet computer, etc., and the smart device 2 may include, for example, a DLNA processing module 21 for transmitting audio data with other apparatuses and devices via a DLNA protocol. In some embodiments, the wireless audio playing component 1 may be, for example, a pair of headphones, a set of speakers supporting multi-channel playing, or may be formed by grouping different types of audio playing devices worn or owned by several users according to needs, so as to form the wireless audio playing component 1, for example, the component may include both a wireless headphone and a wireless speaker, which are not described herein. The wireless Audio playing assembly 1 may include at least two Audio playing devices, such as the first Audio playing device 11, the Audio playing device 12, and other more Audio playing devices up to the Audio playing device 1n, where each Audio playing device includes an LE Audio communication module, such as the first LE Audio communication module 113, the LE Audio communication module 123, and the LE Audio communication module 1n3 shown in fig. 1. In some embodiments, a portion of the audio playing apparatus in the wireless audio playing component 1, for example, the first audio playing apparatus 11 may further include a first DLNA processing module 111, which may be configured to establish a first DLNA connection with the DLNA processing module 21 in the smart device 2 based on the DLNA protocol, and receive, via the first DLNA connection, first control information including at least identification information of the target DMS sent by the smart device 21, and further obtain, based on the first control information, first audio data from the target DMS. In some embodiments, the target DMS may be located locally on the smart device 2, or may be located in any cloud server outside the smart device 2, which is not limited by the present application.

In some embodiments, the first Audio playing apparatus 11 may further include a first conversion codec 112, where the first conversion codec 112 may be configured to perform encoding conversion on the first Audio data acquired from the smart device 2 via the first DLNA processing module 111, to obtain first broadcast Audio data applicable to the LE Audio mode, for example. The LE Audio mode applicable encoding method includes, but is not limited to, an LC3/LC3+ encoding method, where the first conversion codec 112 may first decode the first Audio data according to its original encoding method, for example, the original encoding method of the first Audio data may be SBC (Sub-band encoding), AAC (Advanced Audio Coding), or the like, and obtain second Audio data after decoding, and encode the second Audio data in the LE Audio mode applicable encoding method, for example, encode the second Audio data in the LC3/LC3+ encoding method, and obtain first broadcast Audio data capable of being transmitted in the LE Audio mode.

Further, the first LE Audio communication module 113 in the first Audio playing device 11 may be configured to transmit the first broadcast Audio data to the LE Audio communication module in each of the other Audio playing devices in the wireless Audio playing assembly 1 except the first Audio playing device 11 via the LE Audio mode (including an LE Audio protocol, such as LE iso hronous in the bluetooth technical standard BT5.2, etc.), for example, the Audio playing device 12 may receive and play the first broadcast Audio data via the LE Audio communication module 123 therein, and the Audio playing device 1n may receive and play the first broadcast Audio data via the LE Audio communication module 1n3 therein.

Note that, herein, various components, such as a DLNA processing module, an LE Audio communication module, a conversion codec, and the like, may be implemented independently or integrated in any combination, for example, may be implemented by an SOC (system on a chip), for example, corresponding functions may be executed using various RISC (reduced instruction set computer) processors IP purchased from ARM company or the like as processors of the SOC, and may be implemented as an embedded system. In particular, there are many modules on the commercially available modules (IP), such as, but not limited to, memory, various communication modules, codecs, buffers, and the like. Other devices such as an antenna and speaker may be external to the chip. Users can implement various communication modules, codecs, etc. by constructing ASICs (application specific integrated circuits) based on purchased IPs or self-developed modules in order to reduce power consumption and cost. For example, a user may also implement various communication modules, codecs, etc. using an FPGA (field programmable gate array), which may be used to verify the stability of a hardware design. For various communication modules, codecs, etc., a buffer is usually provided to temporarily store data generated during processing.

In some embodiments, especially in the case where the smart device 2 does not support the LE Audio mode, but it is desired to share its Audio data with multiple Audio playing apparatuses, in the prior art, for example, the DLNA protocol supported by the smart device 2 is used, which can only be connected to one Audio playing apparatus at the same time, while the wireless Audio playing assembly 1 according to the embodiment of the present application is used, which can enable the smart device 2 to use only the universal, non-customized DLNA protocol to realize the sharing of the Audio data with the wireless Audio playing assembly 1 including multiple Audio playing apparatuses without adding an LE Audio communication module to the smart device 2 or performing any private configuration on the existing software and hardware of the smart device 2.

In some embodiments, the wireless audio playback component 1 according to embodiments of the present application may also support playback of multi-channel audio data from the smart device 2. In some embodiments, the multi-channel Audio data from the smart device 2 may include a channel identifier of the multi-channel Audio data, in which case, the first LE Audio communication module 113 in the first Audio playing apparatus 11 may be further configured to set a protocol of the LE Audio mode to be related to the multi-channel based on the channel identifier in the multi-channel broadcast Audio data, so that the broadcast Audio data of each channel after the first broadcast Audio data is converted by the codec mode is respectively carried in BIS events corresponding to each channel; the LE Audio communication module in the other Audio playing devices except the first Audio playing device 11 in the wireless Audio playing assembly 1 transmits broadcast Audio data containing BIS events corresponding to each channel to the LE Audio mode, so that the other Audio playing devices corresponding to each channel can receive and play the Audio data in the BIS events corresponding to the channels. A specific arrangement of the multi-channel audio broadcasting is illustrated in the following with reference to fig. 2.

Fig. 2 shows a schematic diagram of an exemplary timing of a wireless Audio playback component broadcasting multi-channel Audio data via LE Audio mode according to an embodiment of the present application. As shown in fig. 2, in order to support Audio sharing, the LE Audio mode introduces a synchronous broadcast group (BIG) and a synchronous broadcast stream (BIS). The interval between two adjacent BIG events in time sequence is called BIG event interval, for example, the interval between BIG event x shown in 201 and BIG event x+1 shown in 201a in fig. 2 is a BIG event interval (where x and x+1 are time sequence reference numerals, which may be omitted for convenience of description). One BIG event may include a plurality of BIS events, taking BIG event x as shown at 201 in FIG. 2 as an example, which includes BIS1 event x as shown at 202 and BIS2 event x as shown at 203 arranged in sequence, with the interval between adjacent BIS events being referred to as BIS interval. In each BIS event, a plurality of sub-events (hereinafter simply referred to as sub-events or BIS sub-events) of the BIS event may be included, for example, BIS1 event x shown at 202 includes sub-event 2021, sub-event 2022, sub-event 2023 and sub-event 2024, and similarly BIS2 event x shown at 203 includes sub-event 2031, sub-event 2032, sub-event 2033 and sub-event 2034. BIS1 event x+1 shown as 202a and BIS2 event x+1 shown as 203a are also included in the next BIG event x+1 shown as 201a, and BIS1 event x+1 shown as 202a includes sub-event 2021a, sub-event 2022a, sub-event 2023a and sub-events 2024a, and BIS2 event x+1 shown as 203a includes sub-event 2031a, sub-event 2032a, sub-event 2033a and sub-event 2034a. In addition, each BIS event may be followed by a control sub-event 204 that is set as needed. It should be noted that the number of BIS events included in the BIG event, the number of sub-events included in the BIS event, whether each sub-event is followed by a control sub-event, and the specific content sent in the sub-event may be set as required on the premise of following the LE Audio protocol framework, which is not particularly limited in the present application.

In the configuration of the BIG and BIS shown in fig. 2, a plurality of BIS included in each BIG can be used for transmission of broadcast audio data of different channels, for example, BIS1 is used for transmission of broadcast audio data of a left channel and BIS2 is used for transmission of broadcast audio data of a right channel. Wherein the broadcast audio data PDU is transmitted in sub-events included in each BIS event. In some embodiments, parameters such as BN (Burst Number), IRC (Immediate Repetition Count, continuous repetition count), PTO (Pre-Transmission Offset ), NSE (Number of Subevents, number of sub-events) and the like may be set in the LE Audio broadcast protocol, so that the transmission mode of the PDU in the BIS event may be configured, for example, the same PDU may be transmitted multiple times in the same BIG and/or different BIG (multiple transmissions of the PDU are collectively called PDU retransmission times, and the total Number of transmission times is called retransmission times), so long as the Audio playing device receiving the broadcast Audio data can correctly receive any one PDU retransmission, and analysis of the broadcast Audio data may be completed.

In fig. 2, bn=1, irc=4, pto=0, nse=4 are exemplarily set in the LE Audio broadcasting protocol, and in the case where BIS1 is used to transmit left channel broadcast Audio data and BIS2 is used to transmit right channel broadcast Audio data, the number of retransmissions of the PDU is 4 (detailed calculation method is known by those skilled in the art with reference to LE Audio related technology files), it can be seen that in BIG event x shown in 201, PDUs transmitted in sub event 2021, sub event 2022, sub event 2023, and sub event 2024 are p0 (left channel) retransmission frames, and PDUs transmitted in sub event 2031, sub event 2032, sub event 2033, and sub event 2034 are p0 (right channel) retransmission frames. Correspondingly, in the next BIG event x+1 shown in 201a, p1 (left channel) retransmission frames are sent in each of sub-event 2021a, sub-event 2022a, sub-event 2023a, and sub-event 2024a of BIS1, while p1 (right channel) retransmission frames are sent in each of sub-event 2031a, sub-event 2032a, sub-event 2033a, and sub-event 2034a of BIS 2.

In other embodiments, not limited to the left channel and the right channel, when the first audio data is multi-channel audio data containing a greater number of channels, BIS events corresponding to the channels one by one may be set in the BIG and the broadcast audio data of the corresponding channels may be transmitted in the BIS events, and other audio playing devices in the wireless audio playing component 1 may only receive and play the broadcast audio data of the BIS events of the corresponding channels.

In some other embodiments, the first Audio data may be multi-channel Audio data, and in the first control information sent by the smart device 2 to the first Audio playing apparatus 11, the first Audio data further includes channel related information about Audio data of each channel of the first Audio data, in which case, the first LE Audio communication module 113 may be further configured to perform data-to-channel correspondence identification on the first Audio data after the codec conversion according to the channel related information included in the first control information, and on the basis of the first control information, set a protocol of the LE Audio mode, so that the Audio data of each channel after the codec conversion is respectively carried in the corresponding BIS event allocated for each channel, and further transmit, via the LE Audio mode, broadcast Audio data including the BIS event corresponding to each channel to the LE Audio communication module in other Audio playing apparatuses except for the first Audio playing apparatus 11 in the wireless Audio playing assembly 1, so that the other Audio playing apparatuses corresponding to each channel receive and play the broadcast Audio data in the corresponding BIS event. The manner of carrying the multi-channel data in each corresponding BIS event is similar to the above example and is not repeated here.

Fig. 3 (a) shows a schematic illustration of a wireless Audio playing component according to another embodiment of the present application, and fig. 3 (b) shows a schematic illustration of a wireless Audio playing component sharing Audio data via LE Audio broadcasting according to another embodiment of the present application. As shown in fig. 3 (a), the first Audio playing device 11 may further include a power monitoring component 114, configured to monitor the remaining power of the first Audio playing device 11, where when the power monitoring component 114 monitors that the remaining power of the first Audio playing device 11 is lower, for example, lower than the first threshold, it may be considered that it is not suitable to take on the role of the LE Audio broadcast sender that sends broadcast Audio data to other Audio playing devices, and at this time, the first Audio playing device 11 may forward the task of Audio data broadcast to other Audio playing devices, that is, start the role-to-role handover procedure of the LE Audio broadcast sender.

As an example, for example, during the LE Audio broadcast sender responsibility handover, the first Audio playing device 11 may handover the task of the Audio data broadcast to the second Audio playing device 12 as shown in fig. 3 (a) and 3 (b), wherein, as shown in fig. 3 (a), the second Audio playing device 12 may include the second DLNA processing module 121 and the second conversion codec 122 in addition to the second LE Audio communication module 123. In some embodiments, as shown in fig. 3 (b), the first audio playing device 11 may send second control information (sent by the first DLNA processing module 111 shown in fig. 3 (a) to the second DLNA processing module 121) to the second audio playing device 12 via the second DLNA connection, where the second control information includes at least identification information of the target DMS end, so that the second DLNA processing module obtains the first audio data from the target DMS end based on the second control information. The second DLNA connection may be newly established when the LE Audio broadcast sender responsibility is intended to be handed over, or may be previously established, which is not limited in the present application. After the first DLNA processing module 111 sends the second control information to the second DLNA processing module 121 for a period of time, for example, in a first predetermined period of time, the first DLNA processing module 111 and the second DLNA processing module 121 will simultaneously acquire the first Audio data, and accordingly, the first conversion codec 112 also continues to convert the acquired first Audio data in a coding manner, so as to obtain first broadcast Audio data (BC 1 shown in fig. 3 (b)) applicable to the LE Audio mode, and the first broadcast Audio data is continuously transmitted by the first LE Audio communication module 113 to other Audio playing devices (LE Audio communication modules in respective Audio playing devices) except the first Audio playing device 11 (including the second Audio playing device 12) in the wireless Audio playing assembly 1 via the LE Audio mode, so as to be received and played by the other Audio playing devices. After the first predetermined period of time has elapsed, the first DLNA processing module 111 of the first Audio playback apparatus 11 will stop acquiring the first Audio data, the first conversion codec 112 will stop the encoding mode conversion of the first Audio data, and the first LE Audio communication module 113 will also stop broadcasting the encoding mode converted first broadcast Audio data BC1.

Correspondingly, in order to ensure that the role of the LE Audio broadcast sender can be assumed after the first predetermined period of time, the second Audio playing device 12 obtains, by using the second DLNA processing module 121, the first Audio data from the target DMS terminal based on the second control information via the third DLNA connection, decodes the first Audio data by the second conversion codec 122 in the second Audio playing device 12 to obtain third Audio data (not shown), and encodes the third Audio data in the LE Audio mode applicable encoding mode (including LC3/LC3+ encoding mode) to obtain second broadcast Audio data applicable to the LE Audio mode (BC 2 in fig. 3 (b)). It is noted that, after the first predetermined period of time elapses, the second LE Audio communication module 123 transmits the second broadcast Audio data BC2 with the converted encoding mode to other Audio playing devices (such as the first Audio playing device 11, the Audio playing devices 13, …, the Audio playing device 1n, etc. shown in fig. 3 (b)) except the second Audio playing device 12 in the wireless Audio playing assembly 1 via the LE Audio mode in a later period of time for receiving and playing by the other Audio playing devices. The third DLNA connection of fig. 3 (b) does not indicate that the second audio playing apparatus 12 reestablishes a new DLNA connection with the smart device 2, but merely means that the first audio data is acquired from the target DMS based on the second control information, where the target DMS may be either the smart device 2 or the cloud server, so no additional modification of the DLNA protocol in the smart device 2 is required.

Specifically, the first predetermined period is selected to ensure that the overlapping requirement of the first Audio data due to the retransmission timing of the PDUs of the BIS, the overlapping requirement of the Audio data due to the applicable encoding mode of the LE Audio mode, or the overlapping requirement due to the difference between the division of the Audio frames of other formats in the first Audio data and the Audio frames of the LE Audio mode, and the overlapping requirement due to the non-synchronization of the payloads in the first Audio data received via the other modes and the PDUs in the BIS transmitted by the LE Audio broadcast, can be satisfied by the first Audio playback device 11 and the second Audio playback device 12, so that after the first predetermined period, the sender of the LE Audio mode broadcast keeps the second broadcast Audio data BC2 transmitted by the sender of the LE Audio mode broadcast and the first broadcast Audio data BC1 transmitted by the first Audio playback device 11 in synchronization, coherently and non-overlapping, thereby not affecting the Audio quality of the user listening broadcast to ensure the Audio switching.

In other embodiments, the first Audio playing device 11 may also monitor the signal quality of the wireless connection signal between the smart devices 2, and if it is detected that the signal quality is lower than the second threshold value of the corresponding indicator of the signal quality, the first Audio playing device 11 may also start the above-mentioned LE Audio broadcast sender responsibility handover procedure, which is similar to that described in connection with fig. 3 (a) and 3 (b), and is not repeated herein. The signal quality between the first audio playing device 11 and the smart device 2 may be obtained by using one or more parameters of RSSI (Received Signal Strength Indicator, strength indication of received signal), PER (Packet Error Rate ), BER (Bit Error Rate), PLR (Packet Loss Rate) and the like of the wireless connection signal, and the specific calculation mode is not particularly limited in the present application.

In some embodiments, in the above-mentioned LE Audio broadcast sender responsibility handover process, the first Audio playing device 11 may select a suitable LE Audio broadcast sender responsibility handover object (i.e. the second Audio playing device 12) according to a certain preset rule, for example, the signal quality of the wireless connection with the first Audio playing device is the best, so long as the Audio playing device has LE Audio coding mode conversion capability and LE Audio broadcast transmission capability.

According to the wireless Audio playing component provided by the embodiment of the application, through the real-time monitoring of the residual electric quantity of the LE Audio broadcasting sender and the wireless communication signal quality between the LE Audio broadcasting sender and the intelligent equipment in the component, the role of the LE Audio broadcasting sender can be switched when the residual electric quantity is insufficient or the signal quality is poor, and through overlapping reception of Audio data for a period of time, the integrity of second broadcast Audio data to be broadcast by a second Audio playing device which is about to bear the role of the LE Audio broadcasting sender can be fully ensured, so that the broadcast Audio data sent by the LE Audio broadcasting sender after the overlapping period of time and the Audio data broadcast by the first Audio playing device can be synchronous, consistent and not leaked again, thus, the seamless switching of Audio broadcasting can be completed under the condition that a user does not feel, and the quality of Audio broadcasting is not influenced.

Fig. 4 shows a flow chart of a method of wireless communication of a wireless audio playback component in accordance with an embodiment of the present application. The wireless communication method is suitable for a wireless Audio playing assembly, the wireless Audio playing assembly comprises at least two Audio playing devices, each of the at least two Audio playing devices supports an LE Audio mode, and the at least two Audio playing devices comprise at least one Audio playing device supporting a DLNA protocol.

As shown in fig. 4, the wireless communication method starts in step S401, and in step S401, a first DLNA connection is established with an intelligent device based on a DLNA protocol by a first audio playback device of the at least one audio playback device supporting the DLNA protocol, wherein the intelligent device supports the DLNA protocol.

In step S402, first control information including at least identification information of a target DMS terminal sent by the smart device is received by a first audio playing apparatus via the first DLNA connection, and first audio data is acquired from the target DMS terminal based on the first control information.

In step S403, the first Audio playing device obtains first broadcast Audio data applicable to the LE Audio mode based on the obtained first Audio data.

In step S404, the first broadcast Audio data is transmitted to other Audio playing devices except the first Audio playing device in the wireless Audio playing component via the LE Audio mode, so as to be received and played by the other Audio playing devices.

According to the wireless communication method, under the condition that the intelligent equipment does not need to support LE Audio broadcasting, the Audio playing device in the wireless Audio playing component can acquire Audio data from the intelligent equipment by using a DLNA protocol supported by the intelligent equipment, and then the broadcasting Audio data generated after the coding mode conversion is shared in the wireless Audio playing component in the LE Audio mode, so that the cost of the intelligent equipment is not increased, any private configuration is not needed to be carried out on the intelligent equipment, and the Audio data of the intelligent equipment are shared among the Audio playing devices in the wireless Audio playing component with low cost, convenience and high quality under the condition that the Audio playing devices are not connected with the intelligent equipment one by one, the application scene of music sharing is expanded, and meanwhile, the wireless Audio playing component can receive the Audio data from the intelligent equipment in a more flexible mode (for example, the point-to-point single-equipment connection is expanded to a plurality of wireless headphones, or a plurality of sound boxes are connected with one another to carry out such as multi-channel stereo Audio broadcasting, and the like), and the Audio listening experience of users is improved.

In some embodiments, the LE Audio mode applicable encoding manner includes, for example, but is not limited to, LC3/LC3+ encoding manner, the first Audio device may first decode the first Audio data according to its original encoding manner, for example, the original encoding manner of the first Audio data may be SBC (Sub-band encoding), AAC (Advanced Audio Coding), and so on, and obtain second Audio data after decoding, and encode the second Audio data in the LE Audio mode applicable encoding manner, for example, encode the second Audio data in the LC3/LC3+ encoding manner described above, and obtain first broadcast Audio data capable of being transmitted in the LE Audio mode.

In some embodiments, the target DMS may be located locally on the smart device or in any cloud server outside the smart device, which is not limited by the present application.

In some embodiments, the first Audio data may be multi-channel Audio data with a channel identifier, in which case, a protocol of an LE Audio mode may be set first based on the channel identifier, so that Audio data of each channel in the first broadcast Audio data obtained based on the first Audio data is respectively carried in BIS events corresponding to each channel, and then the first broadcast Audio data including BIS events corresponding to each channel is transmitted to other Audio playing devices except the first Audio playing device in the wireless Audio playing assembly via the LE Audio mode, so that the other Audio playing devices corresponding to each channel receive and play the broadcast Audio data in the BIS events corresponding to each channel. The specific manner in which multiple BIS are utilized to carry multi-channel audio data and transmit the multi-channel audio data via PDUs is described in detail in conjunction with fig. 2, and is not described in detail herein.

In other embodiments, the first Audio data is multi-channel Audio data, and the channel related information of the Audio data of each channel is transmitted in the first control information via a first DLNA connection with the smart device, in which case, a protocol of an LE Audio mode may be set according to the channel related information of the Audio data of each channel in the first control information, so that the Audio data of each channel in the first Audio data is respectively carried in a BIS event corresponding to each channel, and further, the first broadcast Audio data including the BIS event corresponding to each channel is transmitted to other Audio playing devices except the first Audio playing device in the wireless Audio playing assembly via the LE Audio mode, so that the other Audio playing devices corresponding to each channel receive and play the broadcast Audio data in the BIS event of the corresponding channel. The specific manner in which multiple BIS are utilized to carry multi-channel audio data and transmit the multi-channel audio data via PDUs is described in detail in conjunction with fig. 2, and is not described in detail herein.

In some embodiments, particularly in the case where the smart device does not support the LE Audio mode and it is desired to share Audio data thereof with a plurality of Audio playback apparatuses, the smart device in the prior art can only be connected to one Audio playback apparatus at the same time using the DLNA protocol, so that it is inconvenient to share multi-channel stereo Audio data with the plurality of Audio playback apparatuses, whereas with the wireless communication method according to the embodiment of the present application, it is possible to enable the smart device to achieve flexible, convenient and low-cost sharing of Audio data in a rich form such as multi-channel stereo between the smart device and a wireless Audio playback assembly including the plurality of Audio playback apparatuses using only the universal, non-customized DLNA protocol.

Fig. 5 shows a flow chart of a method of wireless communication of a wireless audio playback component in accordance with another embodiment of the present application. In some embodiments, particularly in the wireless Audio playing component, in the case that the first Audio playing device that takes responsibility of the LE Audio broadcast sender is a portable device with limited electric quantity, after taking responsibility of LE Audio broadcast transmission for a period of time, insufficient residual electric quantity may occur, or the quality of wireless communication signals between the first Audio playing device and the intelligent device may be degraded due to reasons of movement, shielding, and the like, in the above case, the first Audio playing device may initiate handover of responsibility of the LE Audio broadcast sender to other Audio playing devices, and the procedure of handover will be described in detail in conjunction with fig. 5.

In step S501, for example, a power monitoring component of the first audio playing device may be used to monitor the remaining power of the first audio playing device, and/or monitor the quality of a wireless connection signal between the first audio playing device and the smart device.

In step S502, the remaining power and the signal quality are determined, and when the remaining power is lower than the first threshold or the signal quality is lower than the second threshold, steps S503-S505 are executed, otherwise, the process returns to step S501, and the remaining power and the signal quality are continuously monitored.

In step S503, the first audio playing device sends second control information to the second audio playing device supporting the DLNA protocol via the second DLNA connection, where the second control information includes at least identification information of the target DMS end, so that the second audio playing device obtains the first audio data from the target DMS end based on the second control information.

In step S504, during a first predetermined period of time after the first Audio playing device sends the second control information to the second Audio playing device, the first Audio playing device continues to acquire the first Audio data, and transmits the first broadcast Audio data to other Audio playing devices except the first Audio playing device in the wireless Audio playing component via the LE Audio mode, so as to be received and played by the other Audio playing devices. Meanwhile, the second Audio playing device also acquires the first Audio data in a first preset time period, and obtains second broadcast Audio data applicable to the LE Audio mode based on the acquired first Audio data.

In step S505, after the first predetermined period of time, the first Audio playing device stops acquiring the first Audio data, and the second Audio playing device transmits the second broadcast Audio data to other Audio playing devices except the second Audio playing device in the wireless Audio playing component via the LE Audio mode, so as to be received and played by the other Audio playing devices.

In some embodiments, the signal quality of the wireless connection between the first audio playing device and the smart device may be obtained by using a combination of one or more parameters of the wireless connection signal RSSI, PER, BER, PLR, and the specific calculation manner is not specifically limited in the present application.

In some embodiments, in the above-mentioned LE Audio broadcast sender responsibility handover process, the first Audio playing device may select a suitable LE Audio broadcast sender responsibility handover object according to a certain preset rule, for example, the signal quality of the wireless connection with the first Audio playing device is the best, so long as the Audio playing device has LE Audio coding mode conversion capability and LE Audio broadcast transmission capability.

According to the wireless communication method provided by the embodiment of the application, under the condition that the LE Audio mode is not supported by the intelligent equipment, the user can conveniently enjoy the Audio sharing function in a group of wireless Audio playing devices by utilizing the LE Audio broadcasting without private configuration by utilizing the existing DLNA protocol in the intelligent equipment, the wireless communication method comprises the steps of high-quality multichannel stereo Audio playing, and under the condition that the intelligent equipment does not feel, switching of LE Audio broadcasting senders in a wireless Audio playing component can be seamlessly completed, so that the user can always receive consistent and non-heavy and non-leaking high-quality Audio broadcasting, and the Audio listening experience of the user is improved.

The above description is intended to be illustrative and not restrictive. For example, the above-described examples (or one or more aspects thereof) may be used in combination with each other. For example, other embodiments may be used by those of ordinary skill in the art upon reading the above description. In addition, in the above detailed description, various features may be grouped together to simplify the present disclosure. This is not to be interpreted as an intention that the disclosed features not being claimed are essential to any claim. Rather, inventive subject matter may lie in less than all features of a particular disclosed embodiment. Thus, the following claims are hereby incorporated into the detailed description as examples or embodiments, with each claim standing on its own as a separate embodiment, and it is contemplated that these embodiments may be combined with one another in various combinations or permutations. The scope of the invention should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.

Claims

1. A wireless communication method, adapted for a wireless Audio playing component, the wireless Audio playing component comprising at least two Audio playing devices, each of the at least two Audio playing devices supporting an LE Audio mode, the at least two Audio playing devices including at least one Audio playing device supporting a DLNA protocol, the wireless communication method comprising:

Based on a DLNA protocol, establishing a first DLNA connection with an intelligent device, wherein the intelligent device supports the DLNA protocol;

receiving first control information which at least comprises identification information of a target DMS (digital living network management system) terminal and is sent by the intelligent equipment through the first DLNA connection, and acquiring first audio data from the target DMS terminal based on the first control information;

obtaining first broadcast Audio data applicable to the LE Audio mode based on the obtained first Audio data;

transmitting the first broadcast Audio data to other Audio playing devices except the first Audio playing device in the wireless Audio playing assembly through an LE Audio mode so as to be received and played by the other Audio playing devices;

monitoring the residual electric quantity of the first audio playing device;

when the residual electric quantity of the first audio playing device is lower than a first threshold value or the signal quality of wireless connection between the first audio playing device and the intelligent equipment is lower than a second threshold value, the first audio playing device sends second control information to a second audio playing device supporting a DLNA protocol through a second DLNA connection, wherein the second control information at least comprises identification information of a target DMS end so that the second audio playing device can acquire first audio data from the target DMS end based on the second control information;

During a first predetermined period of time after the first audio playback device sends second control information to the second audio playback device,

the first Audio playing device continues to acquire the first Audio data, and transmits the first broadcast Audio data to other Audio playing devices except the first Audio playing device in the wireless Audio playing component through an LE Audio mode so as to be received and played by the other Audio playing devices;

the second Audio playing device acquires the first Audio data and obtains second broadcast Audio data applicable to the LE Audio mode based on the acquired first Audio data;

after the first preset time period, the first Audio playing device stops acquiring the first Audio data, and the second Audio playing device transmits the second broadcast Audio data to other Audio playing devices except the second Audio playing device in the wireless Audio playing assembly through an LE Audio mode so as to be received and played by the other Audio playing devices.

2. The wireless communication method according to claim 1, wherein obtaining first broadcast Audio data applicable to the LE Audio mode based on the obtained first Audio data further comprises:

And decoding the first Audio data to obtain second Audio data, and encoding the second Audio data in an LE Audio mode applicable encoding mode to obtain first broadcast Audio data applicable to the LE Audio mode, wherein the LE Audio mode applicable encoding mode comprises an LC3/LC3 < + > encoding mode.

3. The wireless communication method of claim 2, wherein the first Audio data is multi-channel Audio data with a channel identifier, transmitting the first broadcast Audio data to other Audio playback devices in the wireless Audio playback assembly than the first Audio playback device via an LE Audio mode for receipt and playback by the other Audio playback devices further comprises:

setting a protocol of an LE Audio mode based on the channel identifier, so that Audio data of each channel in first broadcast Audio data obtained based on the first Audio data are respectively loaded in BIS events corresponding to each channel;

and transmitting first broadcast Audio data containing BIS events corresponding to all channels to other Audio playing devices except the first Audio playing device in the wireless Audio playing assembly through an LE Audio mode, so that the other Audio playing devices corresponding to all channels can receive and play the broadcast Audio data in the BIS events corresponding to all channels.

4. The wireless communication method of claim 2, wherein the first Audio data is multi-channel Audio data, the first control information further comprises channel-related information regarding Audio data of each channel of the first Audio data, and transmitting the first broadcast Audio data to other Audio playback devices in the wireless Audio playback assembly, other than the first Audio playback device, via the LE Audio mode for receipt and playback by the other Audio playback devices further comprises:

setting a protocol of an LE Audio mode according to the channel related information, so that the Audio data of each channel in the first Audio data are respectively carried in BIS events corresponding to each channel;

5. The wireless communication method according to claim 1, wherein the intelligent device does not support LE Audio mode.

6. The wireless communication method of claim 1, wherein the wireless connection signal quality is characterized by one or a combination of RSSI, PER, BER, PLR between the first audio playback device and the smart device.

7. The wireless communication method according to claim 1, wherein the target DMS is located locally to the smart device or in a cloud server external to the smart device.

8. A wireless Audio playing assembly comprising at least two Audio playing devices, characterized in that each of the at least two Audio playing devices comprises an LE Audio communication module, a first Audio playing device of the at least two Audio playing devices further comprises a first DLNA processing module and a first conversion codec,

the first DLNA processing module is configured to: based on a DLNA protocol, establishing a first DLNA connection with an intelligent device, wherein the intelligent device supports the DLNA protocol; receiving first control information which at least comprises identification information of a target DMS (digital living network management system) terminal and is sent by the intelligent equipment through the first DLNA connection, and acquiring first audio data from the target DMS terminal based on the first control information;

The first conversion codec is configured to: performing coding mode conversion on the acquired first Audio data to obtain first broadcast Audio data applicable to the LE Audio mode;

the first LE Audio communication module in the first Audio playback apparatus is configured to: transmitting the first broadcast Audio data to LE Audio communication modules in other Audio playing devices except the first Audio playing device in the wireless Audio playing assembly through an LE Audio mode so as to be received and played by the other Audio playing devices;

the wireless audio playback assembly further includes a second playback audio device including a second DLNA processing module and a second conversion codec, the first audio playback device further includes a power monitoring means for monitoring a remaining power of the first audio playback device, the first DLNA processing module is further configured to:

when the electric quantity monitoring component detects that the residual electric quantity of the first audio playing device is lower than a first threshold value or the signal quality of wireless connection between the first audio playing device and the intelligent equipment is lower than a second threshold value, second control information is sent to the second DLNA processing module through second DLNA connection, and the second control information at least comprises identification information of a target DMS end so that the second DLNA processing module can acquire first audio data from the target DMS end based on the second control information; the first DLNA processing module continues to acquire the first audio data within a first preset time period after the first DLNA processing module sends second control information to the second DLNA processing module; after the first predetermined period of time, the first DLNA processing module stops acquiring the first audio data;

The first conversion codec is further configured to: continuing to perform coding mode conversion on the acquired first Audio data within the first preset time period to obtain first broadcast Audio data applicable to the LE Audio mode; after the first preset time period, stopping coding mode conversion of the acquired first audio data;

the first LE Audio communication module is further configured to: continuously transmitting the first broadcast Audio data to LE Audio communication modules in other Audio playing devices except a first Audio playing device in the wireless Audio playing assembly through an LE Audio mode in the first preset time period so as to be received and played by the other Audio playing devices; stopping broadcasting the first broadcast audio data after the first predetermined period of time;

the second DLNA processing module is configured to: acquiring first audio data from a target DMS terminal based on the second control information via a third DLNA connection during and after the first predetermined period of time;

the second conversion codec is configured to: decoding the first Audio data in the first preset time period and the later time period to obtain third Audio data, and encoding the third Audio data in an LE Audio mode applicable encoding mode to obtain second broadcast Audio data applicable to the LE Audio mode, wherein the LE Audio mode applicable encoding mode comprises an LC3/LC3 < + > encoding mode;

The second LE Audio communication module in the second one of the at least two Audio playback devices is configured to: and transmitting the second broadcast Audio data to other Audio playing devices except the second Audio playing device in the wireless Audio playing component via an LE Audio mode in a time period after the first preset time period so as to be received and played by the other Audio playing devices.

9. The wireless audio playback assembly of claim 8,

the first conversion codec is further configured to: and decoding the first Audio data to obtain second Audio data, and encoding the second Audio data in an LE Audio mode applicable encoding mode to obtain first broadcast Audio data, wherein the LE Audio mode applicable encoding mode comprises an LC3/LC3 < + > encoding mode.

10. The wireless audio playback assembly of claim 9, wherein the first audio data is multi-channel audio data having a channel identification,

the first LE Audio communication module is further configured to: setting a protocol of an LE Audio mode based on the channel identifier, so that Audio data of each channel in the first broadcast Audio data are respectively carried in BIS events corresponding to each channel; and transmitting broadcast Audio data containing BIS events corresponding to each sound channel to an LE Audio communication module in other Audio playing devices except the first Audio playing device in the wireless Audio playing assembly through an LE Audio mode, so that the other Audio playing devices corresponding to each sound channel can receive and play the broadcast Audio data in the BIS events corresponding to the sound channels.

11. The wireless Audio playback assembly of claim 9, wherein the first Audio data is multi-channel Audio data, the first control information further comprises channel-related information regarding Audio data for each channel of the first Audio data, and the first LE Audio communication module is further configured to:

and transmitting broadcast Audio data containing BIS events corresponding to each sound channel to an LE Audio communication module in other Audio playing devices except the first Audio playing device in the wireless Audio playing assembly through an LE Audio mode, so that the other Audio playing devices corresponding to each sound channel can receive and play the broadcast Audio data in the BIS events corresponding to the sound channels.

12. The wireless Audio playback assembly of claim 8, wherein the smart device does not support LE Audio mode.

13. The wireless audio playback assembly of claim 8, wherein the wireless connection signal quality is characterized by one or a combination of RSSI, PER, BER, PLR between the first audio playback device and the smart device.

14. The wireless audio playback assembly of claim 8, wherein the target DMS is located locally to the smart device or in a cloud server external to the smart device.