CN114531673A - Method for optimizing Bluetooth connection speed and Bluetooth earphone device thereof - Google Patents
Method for optimizing Bluetooth connection speed and Bluetooth earphone device thereof Download PDFInfo
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- CN114531673A CN114531673A CN202210114627.4A CN202210114627A CN114531673A CN 114531673 A CN114531673 A CN 114531673A CN 202210114627 A CN202210114627 A CN 202210114627A CN 114531673 A CN114531673 A CN 114531673A
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- bluetooth headset
- bluetooth
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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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
- H04L41/0823—Configuration setting characterised by the purposes of a change of settings, e.g. optimising configuration for enhancing reliability
- H04L41/083—Configuration setting characterised by the purposes of a change of settings, e.g. optimising configuration for enhancing reliability for increasing network speed
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/2866—Architectures; Arrangements
- H04L67/30—Profiles
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention provides Bluetooth headset equipment, which comprises a first Bluetooth headset and a second Bluetooth headset, wherein the first Bluetooth headset and the second Bluetooth headset can be in wireless communication connection, the first Bluetooth headset is configured to be in first BLE connection with terminal equipment, and the first Bluetooth headset can acquire service information from the terminal equipment and send the service information to the second Bluetooth headset; the second bluetooth headset is configured to update a service list with the service information and to communicate related to the service information over a second BLE connection with the terminal device. The invention also provides a corresponding method for optimizing the Bluetooth connection speed and a Bluetooth communication system thereof. The invention provides a Bluetooth headset device for optimizing Bluetooth connection speed and reducing power consumption, a corresponding method thereof and a Bluetooth communication system.
Description
Technical Field
The invention belongs to the field of Bluetooth communication, and particularly relates to a method for optimizing connection speed and a Bluetooth communication system thereof.
Background
With the development of the bluetooth TWS technology, LE Audio applications are becoming more popular, and the LE technology can realize fast ACL connection, but in the TWS application, after the ACL connection is connected, various services, such as telephone, music, volume control service, etc., need to be discovered and configured. Moreover, the LE Audio mobile phone needs to connect two different earphones, and simultaneously, a pair of earphones is also connected. The same flow of establishing connection between the left ear and the right ear leads to the same thing being done twice, thus resulting in too long connection time and bringing bad experience to users on the connection.
Based on the above, the present application provides a technical solution to solve the above technical problems.
Disclosure of Invention
A first object of the present invention is to obtain a bluetooth communication that can optimize the connection speed and reduce power consumption.
A second object of the present invention is to obtain a terminal device that can optimize connection speed and reduce power consumption.
A third object of the invention is to obtain a method for optimizing the speed of a bluetooth connection.
A fourth object of the present invention is to obtain a bluetooth communication system that can optimize connection speed and reduce power consumption.
A fifth object of the present invention is to obtain a bluetooth communication chip that can optimize connection speed and reduce power consumption.
In a first aspect, the present invention provides a bluetooth headset apparatus comprising a first bluetooth headset and a second bluetooth headset, the first bluetooth headset and the second bluetooth headset being connectable for wireless communication,
the first Bluetooth headset is configured to have a first BLE connection with a terminal device, and the first Bluetooth headset can acquire service information from the terminal device and send the service information to the second Bluetooth headset;
the second bluetooth headset is configured to update a service list with the service information and to communicate related to the service information over a second BLE connection with the terminal device.
In one embodiment, the bluetooth headset device is a TWS bluetooth headset.
In a specific embodiment, the first BLE connection is an LE Audio bluetooth connection.
In a specific embodiment, the second BLE connection is an LE Audio bluetooth connection.
More preferably, the first BLE connection and the second BLE connection are both LE Audio bluetooth connections.
In a specific embodiment, the service information is service information specified by LE Audio bluetooth protocol.
As used herein, the BLE connection of the present invention includes the LE Audio bluetooth protocol structure.
As used herein, the LE Audio bluetooth protocol of the present invention includes the bluetooth 5.2 standard protocol.
Preferably, the second bluetooth headset initiates a service configuration request to the terminal device based on the service information to configure the service of the terminal device.
Preferably, the first bluetooth headset may further obtain configuration information from the terminal device, and transmit the configuration information to the second bluetooth headset;
the second bluetooth headset may configure the updated service list using the configuration information.
Preferably, the second bluetooth headset is configured to recognize service information received from the first bluetooth headset as reconnection buffering information.
In a specific embodiment, the reconnection buffer information is Attribute caching reconnection buffer information in LE Audio bluetooth protocol.
Preferably, the bluetooth headset apparatus further includes an nth bluetooth headset configured to update a service list with the service information and perform communication related to the service information through an nth BLE connection with the terminal apparatus, where N is a positive integer not less than 2.
A second aspect of the present invention provides a terminal device that is connected to a first bluetooth headset and a second bluetooth headset in wireless communication, the terminal device being configured to:
acquiring a first service list of the first Bluetooth headset, and performing service configuration on the first Bluetooth headset according to the first service list;
responding to a service request from the first Bluetooth headset, and providing a second service list to the first Bluetooth headset, wherein the second service list is a service list of the terminal equipment;
and if the terminal equipment identifies the first Bluetooth headset and the second Bluetooth headset as a headset pair, associating the first service list with the second Bluetooth headset.
Preferably, in response to a service request from the first bluetooth headset, the terminal device further provides configuration information corresponding to the service list to the first bluetooth headset.
A third aspect of the present invention provides a method of optimizing a bluetooth connection speed, which is applicable to the bluetooth headset apparatus of the present invention or the terminal apparatus of the present invention,
the first Bluetooth headset is connected with terminal equipment through a first BLE, acquires service information from the terminal equipment and sends the service information to the second Bluetooth headset;
the second bluetooth headset updates a service list with the service information and communicates related to the service information over a second BLE connection with the terminal device.
A fourth aspect of the present invention provides a bluetooth communication system, which includes the bluetooth headset device of the present invention, a terminal device, and an optional mth terminal electronic device, where M is a positive integer not less than 2.
A fifth aspect of the present invention provides a bluetooth communication chip, comprising,
a memory for storing a computer program;
a processor for implementing the steps of optimizing bluetooth connection speed described in the present invention when executing the computer program.
The invention can bring at least one of the following beneficial effects:
1. the connection speed is effectively optimized, and the customer experience is improved.
2. The resources of the existing Bluetooth protocol are utilized, and the effective connection optimization function is realized under the condition of not increasing extra cost.
Drawings
The foregoing features, technical features, advantages and embodiments are further described in the following detailed description of the preferred embodiments, which is to be read in connection with the accompanying drawings.
FIG. 1 is an LE Audio TWS connection model;
FIG. 2 is a diagram of a Bluetooth communication system according to an embodiment of the present invention, showing a lookup (discover) process;
fig. 3 shows a specific embodiment of the bluetooth communication system of the present invention, schematically illustrating how it optimizes the bluetooth connection speed.
Fig. 4 shows another embodiment of the bluetooth communication system of the present invention, schematically illustrating how it optimizes the bluetooth connection speed.
Detailed Description
In the invention, the inventor carries out deep thought and improves the prior art. Generally, the prior art considers that the solution can be solved through LE connection interval, but when there are too many handles, it is time consuming. The inventor finds that the connection speed can be greatly improved and the power consumption can be reduced by only sending the service information to the discover to another bluetooth (for example, Attribute control defined as another bluetooth protocol).
Therefore, the technical problem of the invention is that: how to rapidly establish Bluetooth connection (BLE connection) between a pair of Bluetooth headsets and terminal equipment (such as a mobile phone) is solved. It should be noted that the bluetooth connection of the present invention is not equivalent to a bluetooth pairing connection. The bluetooth connection includes a first bluetooth pairing connection, but is not limited thereto.
The technical concept adopted by the invention comprises the following steps: as a pair of earphones, only one earphone is needed to complete the discovery of the mobile phone service information, and the other earphone is shared. Thus, the limitation of the prior art by only changing the LE connection interval is overcome.
And secondly, identifying the service information received from the first Bluetooth headset as GATT reconnection buffering information in a BLE Bluetooth protocol, and then performing the second BLE connection with the terminal equipment.
Compared with the conventional LE Audio, the connection speed can be greatly improved.
Unless explicitly stated or limited otherwise, the term "or" as used herein includes the relationship of "and". The "sum" is equivalent to the boolean logic operator "AND", the "OR" is equivalent to the boolean logic operator "OR", AND "is a subset of" OR ".
The terms "connected," "communicating," and "connecting" are used broadly and encompass, for example, a fixed connection, a connection through an intervening medium, a connection between two elements, or an interaction between two elements, unless expressly stated or limited otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
Based on the present application, one skilled in the art should appreciate that one aspect described herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number and aspects set forth herein. Additionally, such an apparatus may be implemented and/or such a method may be practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present application, and the drawings only show the components related to the present application rather than the number, shape and size of the components in actual implementation, and the type, amount and ratio of the components in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated.
In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects may be practiced without these specific details. The terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features described as being defined as "first," "second," etc., may explicitly or implicitly include one or more of the features. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. The experimental methods and protocols for the specific conditions not noted in the following examples are generally determined according to national standards. If there is no corresponding national standard, it is carried out according to the usual international standards, to the conventional conditions or to the conditions recommended by the manufacturer.
Examples
The Bluetooth headset equipment comprises a first Bluetooth headset and a second Bluetooth headset, wherein the first Bluetooth headset and the second Bluetooth headset can be in wireless communication connection.
It should be noted that the wireless communication connection may be such that the first bluetooth headset and the second bluetooth headset communicate wirelessly. The wireless communication may be implemented by those skilled in the art.
More specifically, the wireless communication connection is not limited to LE Audio connection, and may use either normal bluetooth or BLE connection.
As used herein, the "BLE connection" refers to a bluetooth low energy connection, and more specifically, to a bluetooth connection that supports the bluetooth protocol 4.0 or higher.
The meaning of said BLE connection is different from BLE counterpart connections, as known to the person skilled in the art.
As used herein, the term "normal bluetooth" refers to a bluetooth connection that supports the bluetooth protocol 4.0 or less.
Preferably, the bluetooth headset device of the present invention is a TWS bluetooth headset.
As shown in fig. 1, the LE Audio TWS connectivity model is shown.
The first Bluetooth earphone and the second Bluetooth earphone in the Bluetooth earphone equipment can be connected with the terminal equipment.
The terminal device is typically a terminal device with bluetooth, such as a mobile phone, a music player, a vehicle-mounted device, and the like. It should be understood that the terminal device may be any terminal device having bluetooth and capable of being paired with the bluetooth headset device of the present invention, and the present invention is not limited thereto.
The number of the terminal electronic devices is usually one. Currently, the connection brings a bad experience to the user, since the connection time is usually too long. Due to this, the number of terminal electronic devices that are generally the largest is also limited.
However, the terminal electronic device of the present invention is not limited to this, because the connection speed is increased. The Bluetooth device can be connected with a plurality of terminal devices. The inventor finds that the user experience is not degraded when the terminal electronic devices with the number are connected.
As shown in the figure in particular, the connection between the bluetooth headset devices is an ACL connection. More specifically, as mentioned above, the ACL connection is not limited to LE Audio connection, and either normal bluetooth or BLE connection may be used.
As shown in fig. 2, a process of querying (discovery) service information (service) that needs to be performed when the mobile phone in fig. 1 is connected to the bluetooth headset device is shown.
As used herein, the terms "service information", "GATT cache", "GATT information" and "ATT" all have meanings as defined in the existing bluetooth protocol.
The labeled boxes in fig. 2 show a part of the bluetooth headset inquiry service, such as music control service (Media State), and the individual information reply of some mobile phones, and when the contents to be inquired are too much, the interaction greatly increases the service discovery time.
It should be understood that the Service information (Service) in fig. 2 is only illustrative, and the Service information may also be other Service class information specified in the bluetooth protocol. Specifically, for example, information such as MCS (music control service), TBS (telephone service), VCS (volume control service), ASCS (audio stream control service), PACS (audio capability service), and CSIS is not limited thereto.
Generally, the art generally solves the problem by increasing LE connection interval, which is time consuming when the service content is too much.
Based on this, the inventor conceives a technical scheme that only one earphone is required to complete the discovery of the mobile phone service information and the other earphone is required to share as a pair of earphones. Detailed description of the preferred embodimentsreferring to fig. 3, a schematic diagram of one embodiment of the present invention is shown.
Figure 3 shows that when a headset is connected to a handset, the Service message is sent directly to the opposite ear. Direct application to the ear omits the Discover procedure from the ear.
The first bluetooth headset (left ear) is configured to have a BLE connection with a terminal device.
The first bluetooth headset (left ear) may acquire service information (service information) from the terminal device (cell phone) and send the service information to the second bluetooth headset (right ear).
The second bluetooth headset (right ear) is configured to update a service list with the service information and to communicate related to the service information over a BLE connection with the terminal device.
Additionally, although fig. 3 shows a bluetooth connection between the left and right ears, it should be understood that the connection may be any feasible wireless communication connection, as would be appreciated by those skilled in the art, and the invention is not limited in this regard.
In one embodiment, the bluetooth headset device is a TWS bluetooth headset.
In a specific embodiment, the first BLE connection is an LE Audio bluetooth connection.
In a specific embodiment, the second BLE connection is an LE Audio bluetooth connection.
More preferably, the first BLE connection and the second BLE connection are both LE Audio bluetooth connections.
In a specific embodiment, the service information is service information specified by LE Audio bluetooth protocol.
As used herein, the BLE connection of the present invention includes the LE Audio bluetooth protocol structure.
As used herein, the LE Audio bluetooth protocol of the present invention includes the bluetooth 5.2 standard protocol.
Fig. 4 shows another embodiment of the bluetooth communication system of the present invention.
After the BLE connection is established, service discovery and configuration need to be completed, and this step of service discovery is mainly completed to discover which services the handset provides, and to configure these services at the same time. And the mobile phone end also needs to discover and configure the service of the earphone end.
The specific process of the improvement of the invention is as follows:
Steps 2-1 and 2-2 are connection request and connection success steps between the terminal device and the first Bluetooth headset.
The improvement to the partial repeat work mainly comprises step 3(3-1 and 3-2), and step 4(4-1 and 4-2). Step 3 and step 4 respectively correspond to the mobile phone to discover and configure the service of the earphone and the earphone to discover and configure the service of the mobile phone (step 5, specifically comprising step 5-1 and step 5-2; and step 6, specifically comprising step 6-1 and step 6-2).
For the earpiece end in steps 3 and 4:
when an earphone is connected with the mobile phone, the current Service information is directly sent to the opposite ear (step 7). The service discovery process is omitted from the ear (right ear) by directly using the ear, the step 3 is omitted, considering that the mobile phone does not use the service UUID and value cached at the other ear terminal, a configuration flow needs to be initiated, the step 4 cannot be omitted, and otherwise, the step 4 can be omitted.
The cached information includes information such as MCS (music control service), TBS (telephone service), VCS (volume control service), ASCS (audio stream control service), PACS (audio capability service), CSIS, and the like.
Aiming at the mobile phone ends in 5 and 6:
when the mobile phone connects to a headset and then connects to a group (pair) of headsets again, the Service information connected currently is directly multiplexed (step 7). The discovery process is not needed any more, if the earphone end supports the cache configuration, the configuration process can be omitted, and if the mobile phone does not support any process, the configuration process needs to be initiated.
Through the steps, all service information on the first connection is directly reused by the earphone end and the mobile phone end in the first pairing. This provides a great deal of connection speed. When paired, the second connection uses the GATT shielding mechanism to speed up the connection, improving the LE Audio TWS application experience from the ear (step 9, comprising steps 9-1 and 9-2).
If the current mobile phone is not connected with the earphone, the GATT Caching is not available. Therefore, when the first connection is paired, service discovery and configuration will bring certain time overhead to the step 1 and step 2 parts (including the step 2-1 and the step 2-2)
Here, the Attribute recording is adopted to transmit the connection information that has been completed by the discover to another earphone as another earphone.
In summary, the inventor utilizes the Attribute caching function defined by the bluetooth protocol, and can directly use cached Attribute Handles when reconnecting without doing a discover flow.
In addition, when the terminal is connected to the nth terminal electronic device, all the service information on the first connection may be continuously multiplexed (step 10-12). This provides a great deal of connection speed.
The principle of the present invention is as follows,
and identifying the service information received from the first Bluetooth headset as GATT reconnection buffering information in a BLE Bluetooth protocol, and then performing the second BLE connection with the terminal equipment.
After the BLE ACL of the second earphone is connected, the upper layer service information completely multiplexes the information of the first earphone, so the time overhead is only consumed on the BLE ACL Link (BLE connection) connected with the second earphone, thereby the technical defect of slow connection can be overcome, and better experience is brought by using the LE Audio.
It should be understood that the first bluetooth headset and the second bluetooth headset of the present invention are physically connected to the terminal device, and thus the master-slave relationship between the master and the slave is different from that in the listening scheme. The invention provides a Bluetooth connection mode for replacing a monitoring scheme. Meanwhile, the problem that the connection time of the existing monitoring alternative is too long is solved.
More preferably, the connection scheme of the present invention is also applicable to application scenarios accessing multiple bluetooth or multiple terminals.
It should be further noted that the present invention chooses to save the time spent on the service information, thus greatly reducing the connection time to several seconds (e.g., 2-3 seconds, etc.), and obtaining unexpected results.
The effect of the present invention is as follows,
(1) do not need ears all to do the discover service, optimized the connection speed, reduced the power consumption. For example,
(2) in LE Audio application, a mobile phone needs to establish connection with two earphones, and discover and configure services after establishing connection, where the earphone of the second connection only needs to spend BLE ACL connection time, and service configuration information completes multiplexing of the earphone of the first connection. This speeds up the connection process. While a plurality of terminal electronic devices can be connected without affecting the connection speed.
It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
All documents referred to herein are incorporated by reference into this application as if each were individually incorporated by reference. Furthermore, it should be understood that various changes and modifications can be made by those skilled in the art after reading the above disclosure, and equivalents also fall within the scope of the invention as defined by the appended claims.
Claims (10)
1. A Bluetooth headset device comprising a first Bluetooth headset and a second Bluetooth headset, the first Bluetooth headset and the second Bluetooth headset being connectable in wireless communication,
the first Bluetooth headset is configured to have a first BLE connection with the terminal device, and the first Bluetooth headset can acquire service information from the terminal device and send the service information to the second Bluetooth headset;
the second bluetooth headset is configured to update a service list with the service information and to communicate related to the service information over a second BLE connection with the terminal device.
2. The bluetooth headset device of claim 1, wherein the second bluetooth headset initiates a service configuration request to the terminal device to configure a service of the terminal device based on the service information.
3. The Bluetooth headset device of claim 1,
the first Bluetooth headset can also acquire configuration information from the terminal equipment and transmit the configuration information to the second Bluetooth headset;
the second bluetooth headset may configure the updated service list using the configuration information.
4. The bluetooth headset device of claim 1 or 2, wherein the second bluetooth headset is configured to identify service information received from the first bluetooth headset as reconnection buffering information.
5. The bluetooth headset device according to claim 1 or 2, characterized in that the bluetooth headset device further comprises an nth bluetooth headset configured to update a service list with the service information and to communicate related to the service information over an nth BLE connection with the terminal device, N being a positive integer no less than 2.
6. A terminal device in wireless communicative connection with a first bluetooth headset and a second bluetooth headset, the terminal device configured to:
acquiring a first service list of the first Bluetooth headset, and performing service configuration on the first Bluetooth headset according to the first service list;
responding to a service request from the first Bluetooth headset, and providing a second service list to the first Bluetooth headset, wherein the second service list is a service list of the terminal equipment;
and if the terminal equipment identifies the first Bluetooth headset and the second Bluetooth headset as a headset pair, associating the first service list with the second Bluetooth headset.
7. The terminal device of claim 6,
in response to a service request from the first bluetooth headset, the terminal device further provides configuration information corresponding to the service list to the first bluetooth headset.
8. A method for optimizing the speed of a Bluetooth connection, characterized in that it is applied to a Bluetooth headset device according to any of claims 1-5 or a terminal device according to any of claims 6-7,
the first Bluetooth headset is connected with the terminal equipment through a first BLE, acquires service information from the terminal equipment and sends the service information to the second Bluetooth headset;
the second bluetooth headset updates a service list with the service information and communicates related to the service information over a second BLE connection with the terminal device.
9. A bluetooth communication system, comprising a bluetooth headset device according to any of claims 1-6, a terminal device and optionally an mth terminal electronic device, wherein M is a positive integer no less than 2.
10. A Bluetooth communication apparatus, comprising,
a memory for storing a computer program;
a processor for implementing the steps of optimizing bluetooth connection speed as claimed in claim 8 when executing the computer program.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024001134A1 (en) * | 2022-06-30 | 2024-01-04 | Oppo广东移动通信有限公司 | Method and apparatus for connecting audio device, and storage medium and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2024001134A1 (en) * | 2022-06-30 | 2024-01-04 | Oppo广东移动通信有限公司 | Method and apparatus for connecting audio device, and storage medium and device |
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