WO2023246056A1

WO2023246056A1 - Device connection method and apparatus, and storage medium and chip

Info

Publication number: WO2023246056A1
Application number: PCT/CN2022/142139
Authority: WO
Inventors: 包建全
Original assignee: Oppo广东移动通信有限公司
Priority date: 2022-06-21
Filing date: 2022-12-27
Publication date: 2023-12-28
Also published as: CN117319970A

Abstract

A device connection method and apparatus, and a storage medium and a chip. The method is applied to a first Bluetooth audio device, and comprises: on the basis of a security management protocol between a first Bluetooth audio device and a first target device, acquiring identification information of the first target device; sending a Bluetooth-low-energy broadcast message corresponding to the identification information, wherein the Bluetooth-low-energy broadcast message is used for indicating that the first Bluetooth audio device can respond to a Bluetooth-low-energy audio connection request initiated by the first target device; receiving a Bluetooth-low-energy audio connection request sent by the first target device; and in response to the Bluetooth-low-energy audio connection request, establishing a Bluetooth-low-energy audio connection to the first target device. By means of the embodiments of the present application, the possibility of a Bluetooth audio device erroneously connecting to a terminal device can be reduced, thereby improving the accuracy and flexibility of the Bluetooth audio device performing a communication connection.

Description

Equipment connection methods and devices, storage media, chips

This application claims priority to the Chinese patent application submitted on June 21, 2022, with application number 202210705490. Applying.

Technical field

The present application relates to the field of Bluetooth communication technology, and in particular, to a device connection method and device, a storage medium, and a chip.

Background technique

Currently, when users use Bluetooth audio devices to connect to terminal devices (such as smartphones, tablets, smart wearable devices, etc.), in addition to using the classic Bluetooth connection method, they can also use BLE (Bluetooth Low Energy) based on the new generation of Bluetooth technology. Establish a connection through Bluetooth Low Energy), especially LE Audio (Low Energy Audio, Low Energy Audio) Bluetooth connection. However, in practice, it has been found that for current Bluetooth audio devices and terminal devices that support LE Audio, misconnections are often prone to occur during the connection process. That is, Bluetooth audio devices are prone to misconnection with terminal devices that are different from what the user expected, which reduces the risk of misconnection. The accuracy and flexibility of communication connections for Bluetooth audio devices.

Contents of the invention

Embodiments of the present application disclose a device connection method and device, storage medium, and chip, which can reduce the possibility of Bluetooth audio devices misconnecting to terminal devices and improve the accuracy and flexibility of communication connections by Bluetooth audio devices.

The first aspect of the embodiment of the present application discloses a device connection method, which is applied to a first Bluetooth audio device. The method includes:

Based on the security management protocol between the first Bluetooth audio device and the first target device, obtain the identification information of the first target device;

Send a low-power Bluetooth broadcast message corresponding to the identification information. The low-power Bluetooth broadcast message is used to indicate that the first Bluetooth audio device can respond to the low-power Bluetooth audio connection request initiated by the first target device. ;

Receive a low-power Bluetooth audio connection request sent by the first target device;

In response to the Bluetooth low energy audio connection request, a Bluetooth low energy audio connection is established with the first target device.

The second aspect of the embodiment of the present application discloses a device connection method, which is applied to a second Bluetooth audio device. The method includes:

Monitor the Bluetooth link between the first Bluetooth audio device and the first target device to obtain monitoring data, where the second Bluetooth audio device and the first Bluetooth audio device belong to the same Bluetooth device set;

According to the monitoring data, calculate the identification information of the first target device;

Send a low-power Bluetooth broadcast message corresponding to the identification information. The low-power Bluetooth broadcast message is used to indicate that the second Bluetooth audio device can respond to the low-power Bluetooth audio connection request initiated by the first target device. ;

The second aspect of the embodiment of the present application also discloses another device connection method, which is applied to a second Bluetooth audio device. The method includes:

Receive the identification information of the first target device sent by the first Bluetooth audio device, wherein the second Bluetooth audio device and the first Bluetooth audio device belong to the same Bluetooth device set;

The third aspect of the embodiments of the present application discloses a device connection method, which is applied to terminal devices. The method includes:

Based on the security management protocol between the first Bluetooth audio device and the terminal device, send security management information corresponding to the identification information of the terminal device to the first Bluetooth audio device;

Receive a first low-power Bluetooth broadcast message sent by the first Bluetooth audio device in response to the security management information;

When it is determined that the first Bluetooth low energy broadcast message corresponds to the identification information of the terminal device, in response to the first Bluetooth low energy broadcast message, send a low-power Bluetooth audio device to the first Bluetooth audio device. and a Bluetooth audio connection request, so that the first Bluetooth audio device responds to the Bluetooth low energy audio connection request and establishes a low-power Bluetooth audio connection with the terminal device.

The fourth aspect of the embodiment of the present application discloses a device connection device, which is applied to the first Bluetooth audio device. The device connection device includes:

An information acquisition unit configured to acquire identification information of the first target device based on the security management protocol between the first Bluetooth audio device and the first target device;

A first broadcast sending unit configured to send a low-power Bluetooth broadcast message corresponding to the identification information. The low-power Bluetooth broadcast message is used to indicate that the first Bluetooth audio device can respond to the first target device’s initiation. Bluetooth low energy audio connection request;

A first request receiving unit configured to receive a low-power Bluetooth audio connection request sent by the first target device;

A first connection unit configured to establish a low-power Bluetooth audio connection with the first target device in response to the low-power Bluetooth audio connection request.

The fifth aspect of the embodiment of the present application discloses a device connection device applied to a second Bluetooth audio device. The device connection device includes:

A monitoring unit configured to monitor the Bluetooth link between the first Bluetooth audio device and the first target device and obtain monitoring data, wherein the second Bluetooth audio device and the first Bluetooth audio device belong to the same Bluetooth device. gather;

A computing unit configured to calculate identification information of the first target device according to the monitoring data;

A second broadcast sending unit, configured to send a low-power Bluetooth broadcast message corresponding to the identification information, where the low-power Bluetooth broadcast message is used to instruct the second Bluetooth audio device to respond to a call initiated by the first target device. Bluetooth low energy audio connection request;

A second request receiving unit, configured to receive a low-power Bluetooth audio connection request sent by the first target device;

The second connection unit is configured to establish a low-power Bluetooth audio connection with the first target device in response to the low-power Bluetooth audio connection request.

The fifth aspect of the embodiment of the present application discloses another device connection device, which is applied to a second Bluetooth audio device. The device connection device includes:

An information receiving unit configured to receive the identification information of the first target device sent by the first Bluetooth audio device, wherein the second Bluetooth audio device and the first Bluetooth audio device belong to the same Bluetooth device set;

A third broadcast sending unit, configured to send a low-power Bluetooth broadcast message corresponding to the identification information, where the low-power Bluetooth broadcast message is used to instruct the second Bluetooth audio device to respond to a call initiated by the first target device. Bluetooth low energy audio connection request;

A third request receiving unit configured to receive a low-power Bluetooth audio connection request sent by the first target device;

The third connection unit is configured to establish a low-power Bluetooth audio connection with the first target device in response to the low-power Bluetooth audio connection request.

The sixth aspect of the embodiment of the present application discloses an equipment connection device, which is applied to terminal equipment. The equipment connection device includes:

An information sending unit configured to send security management information corresponding to the identification information of the terminal device to the first Bluetooth audio device based on the security management protocol between the first Bluetooth audio device and the terminal device;

A broadcast receiving unit configured to receive a low-power Bluetooth broadcast message sent by the first Bluetooth audio device in response to the security management information;

A request sending unit, configured to respond to the Bluetooth low energy broadcast message and send a low-power Bluetooth audio device to the first Bluetooth audio device when it is determined that the low-power Bluetooth broadcast message corresponds to the identification information of the terminal device. and a power consumption Bluetooth audio connection request, so that the first Bluetooth audio device responds to the low power Bluetooth audio connection request and establishes a low power Bluetooth audio connection with the terminal device.

The seventh aspect of the embodiment of the present application discloses a Bluetooth audio device, which includes a memory and a processor. A computer program is stored in the memory. When the computer program is executed by the processor, the processor implements the following All or part of the steps in any device connection method disclosed in the first aspect or the second aspect of the application embodiments.

The eighth aspect of the embodiment of the present application discloses a terminal device, which includes a memory and a processor. A computer program is stored in the memory. When the computer program is executed by the processor, the processor implements the application as described in the present application. All or part of the steps in any device connection method disclosed in the third aspect of the embodiment.

The ninth aspect of the embodiment of the present application discloses a computer-readable storage medium that stores a computer program, wherein when the computer program is executed by a processor, the first aspect, the second aspect, or the third aspect of the embodiment of the present application is implemented. All or part of the steps in any of the disclosed device connection methods.

The tenth aspect of the embodiment of the present application discloses a chip, including a processor, the processor is configured to read and execute the computer program stored in the memory to execute the first aspect, the second aspect or the third aspect of the embodiment of the present application. All or part of the steps in any device connection method disclosed in the aspect.

The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below. Other features and beneficial effects of the application will be apparent from the description, drawings and claims.

Description of the drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. Those of ordinary skill in the art can also obtain other drawings based on these drawings without exerting creative efforts.

Figure 1A is a schematic diagram of an application scenario of the device connection method disclosed in the embodiment of the present application;

Figure 1B is a schematic diagram of another application scenario of the device connection method disclosed in the embodiment of the present application;

Figure 2 is a basic framework diagram of the Bluetooth protocol in related technologies;

Figure 3 is a schematic flow chart of a device connection method applied to a first Bluetooth audio device disclosed in an embodiment of the present application;

Figure 4 is a schematic flow chart of another device connection method applied to the first Bluetooth audio device disclosed in the embodiment of the present application;

Figure 5 is a schematic flow chart of yet another device connection method applied to the first Bluetooth audio device disclosed in the embodiment of the present application;

Figure 6 is a schematic flow chart of a device connection method applied to a second Bluetooth audio device disclosed in the embodiment of the present application;

Figure 7 is a schematic flowchart of a device connection method applied to a terminal device disclosed in an embodiment of the present application;

Figure 8 is a sequence diagram of a device connection method disclosed in the embodiment of the present application;

Figure 9 is a sequence diagram of another device connection method disclosed in the embodiment of the present application;

Figure 10 is a modular schematic diagram of a device connection device disclosed in the embodiment of the present application;

Figure 11 is a modular schematic diagram of another device connection device disclosed in the embodiment of the present application;

Figure 12 is a modular schematic diagram of yet another device connection device disclosed in the embodiment of the present application;

Figure 13 is a modular schematic diagram of the fourth device connection device disclosed in the embodiment of the present application;

Figure 14 is a modular schematic diagram of a Bluetooth audio device disclosed in the embodiment of the present application;

Figure 15 is a modular schematic diagram of a terminal device disclosed in the embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

It should be noted that the terms "comprising" and "having" and any variations thereof in the embodiments of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product or product that includes a series of steps or units. Apparatus are not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such processes, methods, products or devices. If there is no conflict, the embodiments, implementation modes and related technical features in this application can be combined and replaced with each other, and the explanations in different embodiments and implementation modes can be applied to each other. "Plural" in this application means two or more.

A detailed description will be given below with reference to the accompanying drawings.

Please refer to FIG. 1A and FIG. 1B together. FIG. 1A is a schematic diagram of an application scenario of the device connection method disclosed in the embodiment of the present application. FIG. 1B is a schematic diagram of another application scenario of the device connection method disclosed in the embodiment of the present application. As shown in Figure 1A, the application scenario may include a first Bluetooth audio device 10 and a terminal device 20. The first Bluetooth audio device 10 may establish a Bluetooth connection with the terminal device 20, such as a classic Bluetooth connection, BLE (Bluetooth Low Energy, Low Energy). Power consumption Bluetooth) connection, etc. Among them, the above-mentioned classic Bluetooth connection refers to the BR based on various versions of Bluetooth protocols (such as the protocols before Bluetooth 4.0 formulated by the Bluetooth SIG, which can also include Bluetooth 4.0 and subsequent versions of the protocol). /EDR (Basic Rate/Enhanced Data Rate), AMP (Alternate MAC/PHYs) and other technologies (or modes) to achieve Bluetooth connection solutions; the above-mentioned BLE connection refers to a new generation Bluetooth protocol based on (such as developed by Bluetooth SIG Bluetooth 4.0 and subsequent versions of the protocol), a Bluetooth connection solution implemented using BLE technology (or mode).

In related technologies, in order to achieve audio data transmission with greater data traffic while maintaining low power consumption of the device, the first Bluetooth audio device 10 can also establish LE Audio (Low Energy Audio, low power audio) with the terminal device 20 Bluetooth connection is based on the new generation of Bluetooth core specification CoreSpec5.2. Compared with the classic A2DP (Advanced Audio Distribution Profile, Advanced Audio Distribution Profile), it can have a higher compression rate and better sound quality, and can also perform at low data rates. Can achieve the effect of sound quality enhancement. It should be noted that, for the purpose of making the device more compatible, the first Bluetooth audio device 10 can adopt dual-mode Bluetooth technology, that is, it supports both classic Bluetooth connection and LE Audio Bluetooth connection. At this time, the first Bluetooth audio device 10 At least one classic Bluetooth link and at least one LE Audio Bluetooth link can be established with the terminal device 20 at the same time. Among them, when the first Bluetooth audio device 10 needs to establish a LE Audio Bluetooth connection with the terminal device 20, it is usually necessary for the first Bluetooth audio device 10 to send a low-power Bluetooth broadcast message (ie, LE Audio broadcast message) in a broadcast manner, and the terminal After receiving the LE Audio broadcast message, the device 20 can automatically or manually send a low-power Bluetooth audio connection request to the first Bluetooth audio device 10, and then the first Bluetooth audio device 10 can respond to the above-mentioned Bluetooth low energy connection request. Audio connection request to establish a LE Audio Bluetooth connection with the terminal device 20.

Exemplarily, Figure 2 shows the basic framework of a Bluetooth protocol, suitable for devices that support the establishment of classic Bluetooth connections and/or LE Audio Bluetooth connections. The framework may include but is not limited to application layer (Profiles), host layer (Host) and control layer (Controller). Among them, the application layer can include various application specifications (profiles) defined by Bluetooth SIG, such as the above-mentioned A2DP, HFP (Hands-Free Profile, phone hands-free profile), HDP (Health Device Profile, health device profile), etc., that is, for Each application can define its own corresponding message format and application rules to suit various application scenarios. The host layer defines the core protocols in the framework, which can include but are not limited to Bluetooth's basic Service Discovery Protocol (Service Discover Protocol, SDP), Logical Link Control and Adaptation Protocol (Logical Link Control and Adaptation Protocol, L2CAP )wait. The control layer defines the underlying hardware parts, such as Host Controller Interface (HCI), Radio Frequency (RF), Baseband (BB), and links based on Link Management Protocol (LMP). Road management, etc.

On this basis, for the first Bluetooth audio device 10 that supports LE Audio Bluetooth connection, there can be a maximum number of connections based on their respective performance configurations. In some embodiments, for the first Bluetooth audio device 10 that supports one-to-one, its maximum number of connections is 1, that is, it is only allowed to maintain a LE Audio Bluetooth connection with one terminal device 20 at the same time, and when the first Bluetooth audio When the device 10 has established a LE Audio Bluetooth connection with a certain terminal device 20, it needs to disconnect the LE Audio Bluetooth connection with the terminal device 20 before it can establish a LE Audio Bluetooth connection with a new terminal device 20. In other embodiments, for the first Bluetooth audio device 10 that supports one to many, the maximum number of connections is greater than 1, that is, it is allowed to maintain LE Audio Bluetooth connections with multiple terminal devices 20 at the same time, and when communicating with the first Bluetooth When the number of terminal devices 20 that the audio device 10 establishes a LE Audio Bluetooth connection does not reach the maximum connectable number, it may be allowed to establish a LE Audio Bluetooth connection with a new terminal device 20; When the number of terminal devices 20 has reached the maximum connectable number, it is necessary to disconnect the LE Audio Bluetooth connections with some terminal devices 20 before establishing a LE Audio Bluetooth connection with a new terminal device 20 .

The inventor found through research that there is a problem in the above related technologies that the first Bluetooth audio device 10 is mistakenly connected to the terminal device: when the first Bluetooth audio device 10 is in a state where LE Audio can be connected, the first Bluetooth audio device 10 can be connected to the external device. Broadcast LE Audio broadcast messages. If the maximum connectable number of the first Bluetooth audio device 10 is N1, and at this time there are N2 (N1, N2 are positive integers, and N2>N1) terminal devices 20 receive the LE Audio broadcast message and send it to the first Bluetooth audio device 10. If a Bluetooth audio device 10 sends a low-power Bluetooth audio connection request, a misconnection may occur in which the terminal device 20 that the user intends to connect fails to establish a LE Audio Bluetooth connection with the first Bluetooth audio device 10.

In order to solve this problem, in the embodiment of the present application, the identification information of the terminal device 20 can be obtained based on the security management protocol (Security Manager Protocol, SMP) between the first Bluetooth audio device 10 and the terminal device 20, and then the third A Bluetooth audio device 10 can send an LE Audio broadcast message carrying the identification information. The above-mentioned LE Audio broadcast message can be used to instruct the terminal device 20 to initiate a LE Audio Bluetooth connection request to the first Bluetooth audio device 10, and the first Bluetooth audio device 10 can respond to the LE Audio Bluetooth connection request. On this basis, the first Bluetooth audio device 10 can receive the low-power Bluetooth audio connection request sent by the terminal device 20, and respond to the low-power Bluetooth audio connection request to establish a LE Audio Bluetooth connection with the terminal device 20.

By implementing the above method, the first Bluetooth audio device 10 can quickly and accurately obtain the identification information of the terminal device 20 by performing relevant interactive operations based on the security management protocol with the terminal device 20 on the classic Bluetooth link, and can further obtain the identification information of the terminal device 20 based on the classic Bluetooth link. The obtained identification information sends a "directed connectable" LE Audio broadcast message to the terminal device 20, so that the terminal device 20 can communicate with the above-mentioned first Bluetooth audio under the trigger of this targeted LE Audio broadcast message. Device 10 establishes a LE Audio Bluetooth connection. Such a device connection method can ensure that the LE Audio broadcast message sent by the first Bluetooth audio device 10 can only be responded to by the terminal device 20 expected by the user, and other devices with different identification information receive the above-mentioned LE Audio broadcast message. No response is required. Therefore, the first Bluetooth audio device 10 can be prioritized to establish a LE Audio Bluetooth connection with the terminal device 20, and the first Bluetooth audio device 10 can be prevented from being mistakenly connected to other devices not selected by the user, which is beneficial to reducing the risk of the first Bluetooth audio device 10 The possibility of mistakenly connecting the terminal device effectively improves the accuracy and flexibility of the communication connection of the first Bluetooth audio device 10 .

For example, the above-mentioned first Bluetooth audio device 10 may include various types of Bluetooth headsets, Bluetooth speakers, etc., and may especially include TWS (True Wireless Stereo) headsets. For example, the above-mentioned terminal device 20 may include various devices or systems with Bluetooth communication functions, such as mobile phones, smart wearable devices, vehicle-mounted terminals, tablet computers, PC (Personal Computer, personal computer), PDA (Personal Digital Assistant, Personal digital assistant), etc., are not specifically limited in the embodiments of this application. It should be noted that the first Bluetooth audio device 10 shown in FIG. 1A and FIG. 1B is a Bluetooth headset, and the terminal device 20 is a mobile phone. This is only an example and does not constitute a reference to the Bluetooth audio device 10 and the Bluetooth audio device 10 in the embodiment of the present application. Limitation of the device type of the terminal device 20. Taking the above-mentioned first Bluetooth audio device 10 including an earphone device as an example, in some embodiments, as shown in FIG. 1A , the first Bluetooth audio device 10 may be a single earphone. In other embodiments, as shown in FIG. 1B , the application scenario may also include a second Bluetooth audio device 30 , and the second Bluetooth audio device 30 and the first Bluetooth audio device 10 may belong to the same Bluetooth device set. Optionally, one of the first Bluetooth audio device 10 and the second Bluetooth audio device 30 can establish a classic Bluetooth connection with the terminal device 20 (which can be understood as the current main headset or main device), so that the first Bluetooth audio The device 10 and the second Bluetooth audio device 30 can be distinguished as master and slave to achieve classic Bluetooth connection with the terminal device 20; at the same time, the first Bluetooth audio device 10 and the second Bluetooth audio device 30 can also be established with the terminal device 20 respectively. LE Audio Bluetooth connection. Optionally, the first Bluetooth audio device 10 and the second Bluetooth audio device 30 may not distinguish the master-slave relationship, so that the first Bluetooth audio device 10 and the second Bluetooth audio device 30 can achieve classic communication with the terminal device 20 at the same time. Bluetooth connectivity and LE Audio Bluetooth connectivity.

It can be understood that the above-mentioned Bluetooth audio device may also include two or more devices in the same group, that is, it may also include other Bluetooth devices except the first Bluetooth audio device 10 and the second Bluetooth audio device 30. Each device in the same group and the terminal device The method of establishing a Bluetooth connection 20 may be similar to the method of establishing a Bluetooth connection between the first Bluetooth audio device 10 and the second Bluetooth audio device 30 and the terminal device 20 .

Please refer to Figure 3. Figure 3 is a schematic flowchart of a device connection method disclosed in an embodiment of the present application. This method can be applied to the above-mentioned first Bluetooth audio device. As shown in Figure 3, the device connection method may include the following steps:

302. Based on the security management protocol between the first Bluetooth audio device and the first target device, obtain the identification information of the first target device.

In the embodiment of the present application, in order to establish a Bluetooth connection between the first Bluetooth audio device and the terminal device that the user intends to connect to (i.e., the first target device designated by the user), especially including establishing a LE Audio Bluetooth connection, the first Bluetooth audio device The identification information of the first target device can be obtained first, and then in subsequent steps, a "directed connectable" LE Audio broadcast message for the first target device can be sent based on the identification information to specify that the first target device can communicate with the first target device. The first Bluetooth audio device establishes a LE Audio Bluetooth connection and avoids false responses from other devices in a connectable state, thereby improving the accuracy of the communication connection of the first Bluetooth audio device.

The identification information of the first target device may include the device address identification information of the first target device (such as the device Bluetooth address, including classic Bluetooth address and BLE address, etc.), device identity identification information, device name identification information, device Model identification information, etc. According to the identification information, the first Bluetooth audio device can confirm that the only corresponding terminal device is the above-mentioned first target device, and thus can establish a Bluetooth connection with the first target device in a targeted manner based on the identification information.

In this embodiment of the present application, the above-mentioned first Bluetooth audio device can adopt dual-mode Bluetooth technology, that is, the first Bluetooth audio device can support classic Bluetooth connection and LE Audio Bluetooth connection at the same time. On this basis, the first Bluetooth audio device can first establish a classic Bluetooth connection with the first target device, and when the classic Bluetooth connection has been established, the first Bluetooth audio device can communicate with the first Bluetooth audio device by configuring the classic Bluetooth link. security management protocol between target devices, and perform interactive operations (i.e., SMP operations) related to the security management protocol, obtain identification information of the first target device, and apply the identification information to establish the first Bluetooth audio device and the third LE Audio Bluetooth connection between a target device. Among them, the above-mentioned security management protocol can be used to manage the pairing, authentication, encryption and other Bluetooth device interaction operations specified in the protocol between the first Bluetooth audio device and the first target device, including realizing the transfer of designated private information, etc., in order to Assist in realizing the directional connection between the first Bluetooth audio device and the first target device.

In some embodiments, the first Bluetooth audio device may also only support LE Audio Bluetooth connection (ie, LE single-mode Bluetooth), and may also implement the device connection method disclosed in the embodiments of this application. Exemplarily, the first Bluetooth audio device can establish a LE Bluetooth connection with the first target device, configure a security management protocol between the first Bluetooth audio device and the first target device on the LE Bluetooth link, and execute the Interaction operations related to the security management protocol (ie, SMP operations) obtain the identification information of the first target device. On this basis, the first Bluetooth audio device can use the identification information to further establish a LE Audio Bluetooth connection with the first target device.

Exemplarily, the above SMP operation may be performed on a Bluetooth link (including a classic Bluetooth link or a LE Bluetooth link) between the first Bluetooth audio device and the first target device. Taking the process of establishing a classic Bluetooth connection between the first Bluetooth audio device and the first target device as an example, a BR/EDR channel can be configured between the first Bluetooth audio device and the first target device, which means that the first Bluetooth audio device and the first target device A target device can establish a Bluetooth physical link such as ACL (Asynchronous Connection Less, asynchronous linkless) or SCO (Synchronous Connection Oriented, synchronous directional link) based on BR/EDR technology, or it can also indicate that the two establish an upper-layer protocol connection, such as A2DP (Advanced Audio Distribution Profile, advanced audio transmission specification), HFP (Hands-Free-Profile, hands-free specification), etc., or intermediary protocol SPP (Serial Port Profile, serial port protocol), etc. For details, please refer to the regulations of the relevant version of the Bluetooth protocol . Preferably, the above SMP operation can be implemented based on the ACL link between the first Bluetooth audio device and the first target device, and the relevant interactive information transfer is completed during the process of establishing a classic Bluetooth connection between the two.

Based on the above Bluetooth link (such as ACL link, etc.), the first Bluetooth audio device can receive the security management information sent by the first target device through the SMP operation, and then can determine the identification information of the first target device based on the security management information. . In some embodiments, the above security management information may only include the IRK (Identity Resolving Key, Bluetooth device address resolution key) corresponding to the first target device, so that after receiving the IRK, the first Bluetooth audio device can directly The IRK is calculated to obtain the identification information of the first target device, which may especially include the BLE address of the first target device, etc.

In other embodiments, the above-mentioned security management information may also include an encrypted data packet carrying the above-mentioned IRK, for example, through STK/LTK (Short Term Key/Long Term Key) generated in the SMP operation. After encrypting the IRK the resulting packet. After receiving the security management information, the first Bluetooth audio device can parse it to obtain the IRK of the corresponding first target device, and then calculate the IRK to obtain the identification information of the first target device, which may especially include the identification information for the first target device. A BLE address of the target device, etc.

For example, the above-mentioned SMP operation may include four main steps: exchanging information (S1), generating encryption keys (S2), encrypting connections (S3), and distributing IRKs (S4). Among them, the step of exchanging information (S1) is mainly used to exchange relevant pairing parameters or feature information (Pairing Feature) between the first Bluetooth audio device and the first target device, and then based on different pairing situations, different processes can be adopted. To generate the above STK/LTK. On a link that uses STK/LTK to implement encryption, the first target device can encrypt and transmit its corresponding IRK to the first Bluetooth audio device, so that the first Bluetooth audio device can securely obtain the IRK of the first target device for use. To calculate its identification information (such as device Bluetooth address, etc.) and implement the subsequent directional connection process.

304. Send a low-power Bluetooth broadcast message corresponding to the above identification information. The low-power Bluetooth broadcast message is used to indicate that the first Bluetooth audio device can respond to the low-power Bluetooth audio connection request initiated by the first target device.

In this embodiment of the present application, after acquiring the identification information of the first target device, the first Bluetooth audio device can generate and send an LE Audio broadcast message corresponding to the identification information based on the identification information, so that the first target device After receiving the LE Audio broadcast message, the LE Audio Bluetooth connection can be established with the first Bluetooth audio device after confirming that the LE Audio broadcast message corresponds to its own identification information.

For example, if the above identification information includes the device Bluetooth address of the first target device, especially the BLE address of the first target device, then the first Bluetooth audio device can generate an orientation for the first target device based on the identification information. Connectable broadcast message (ADV_DIRECT_IND). Among them, the broadcast message can be a "directed connectable" LE Audio broadcast message. It can be understood that for the identification information of different terminal devices, the LE Audio broadcast messages generated and sent by the first Bluetooth audio device may also be different to point to the corresponding terminal devices.

On this basis, the first Bluetooth audio device can send the above-mentioned LE Audio broadcast message by broadcasting, thereby instructing the terminal device that receives the LE Audio broadcast message to judge itself. If it determines that it is the LE Audio broadcast message If the specified first target device is the first target device, the first target device can send a corresponding low-power Bluetooth audio connection request to the first Bluetooth audio device, so that the first Bluetooth audio device establishes a LE Audio Bluetooth connection with the first target device. .

306. Receive the low-power Bluetooth audio connection request sent by the first target device.

In the embodiment of the present application, since the LE Audio broadcast message sent by the first Bluetooth audio device corresponds to the identification information of the first target device, the first target device can determine the LE Audio broadcast message after receiving the LE Audio broadcast message. The identification information corresponding to the broadcast message matches the identification information of the first target device itself, and then in response to the LE Audio broadcast message, a low-power Bluetooth audio connection request can be sent to the first Bluetooth audio device (i.e., a low-power Bluetooth audio connection request is initiated). Audio connection, or initiating a low-power Bluetooth audio connection request). On this basis, the first Bluetooth audio device can receive the above-mentioned low-power Bluetooth audio connection request. The low-power Bluetooth audio connection request can specifically refer to the request instruction data packet, and accordingly establish a targeted connection with the first target device. LE Audio Bluetooth connection.

It should be noted that after receiving the above-mentioned LE Audio broadcast message, the second target device with different identification information can determine that the identification information corresponding to the LE Audio broadcast message does not match the identification information of the second target device itself, so that it can Not responding to this LE Audio broadcast message (for example, directly discarding the broadcast data packet corresponding to the LE Audio broadcast message, etc.) effectively avoids misconnection between the first Bluetooth audio device and the second target device.

308. In response to the low-power Bluetooth audio connection request, establish a low-power Bluetooth audio connection with the first target device.

In this embodiment of the present application, after receiving the low-power Bluetooth audio connection request sent by the first target device, the first Bluetooth audio device may respond to the low-power Bluetooth audio connection request and communicate with the first target in a targeted manner. The device establishes a LE Audio Bluetooth connection, which will not be described here.

It can be seen that by implementing the device connection method described in the above embodiment, the first Bluetooth audio device can quickly and accurately obtain the identification information of the first target device by performing SMP operations with the first target device on the classic Bluetooth link. Then, based on the identification information of the first target device, a "directed connectable" LE Audio broadcast message can be sent to the first target device, so that the first target device can communicate with the first target device under the trigger of the targeted LE Audio broadcast message. The above-mentioned first Bluetooth audio device establishes a LE Audio Bluetooth connection. Such a device connection method can ensure that the LE Audio broadcast message sent by the first Bluetooth audio device can only be responded to by the first target device expected by the user, and the second target device with different identification information receives the above-mentioned LE Audio broadcast message. There is no need to make any response when sending a message. Therefore, the first Bluetooth audio device can be prioritized to establish a LE Audio Bluetooth connection with the first target device, and the first Bluetooth audio device can be prevented from being mistakenly connected to the second target device, which is beneficial to reducing the risk of the first Bluetooth audio device being mistakenly connected to the terminal device. possibility, effectively improving the accuracy and flexibility of communication connections for the first Bluetooth audio device.

Please refer to Figure 4. Figure 4 is a schematic flowchart of another device connection method disclosed in an embodiment of the present application. This method can be applied to the above-mentioned first Bluetooth audio device. As shown in Figure 4, the device connection method may include the following steps:

402. Based on the security management protocol between the first Bluetooth audio device and the first target device, receive the security management information sent by the first target device.

In this embodiment of the present application, the first Bluetooth audio device obtains the identification information of the first target device based on the security management protocol between it and the first target device. Specifically, it may be through the security information sent to the first target device. Obtained by processing management information. For example, the above security management information may only include the Bluetooth device address resolution key IRK corresponding to the first target device, or may include an encrypted data packet carrying the above IRK, etc.

In some embodiments, an SMP operation based on the security management protocol can be performed between the first Bluetooth audio device and the first target device, so that the first Bluetooth audio device can obtain the security management sent by the first target device through the SMP operation. information. For example, when a first Bluetooth audio device establishes a classic Bluetooth connection with a first target device, the connection between the first Bluetooth audio device and the first target device can be configured on the classic Bluetooth link between the two. Security Management Protocol, so that both can perform SMP operations based on this classic Bluetooth link and pass their respective IRKs to each other. Taking the security management information including the IRK of the first target device as an example, the first Bluetooth audio device can receive the security management information sent by the first target device based on the above security management protocol, and then can directly obtain it based on the security management information. Or parse it to obtain the IRK corresponding to the first target device, so that in subsequent steps, based on the relevant parsing and calculation rules for the IRK, the identification information for the first target device can be calculated from the IRK.

404. Calculate the security management information according to the calculation rules corresponding to the above security management information to generate the device Bluetooth address of the first target device.

In this embodiment of the present application, the identification information of the first target device may include the device Bluetooth address of the first target device. For example, the device Bluetooth address may include an RPA (Resolvable Private Address, resolvable private address) type BLE address, and the first Bluetooth audio device may generate a "directed connectable" LE Audio broadcast message based on the BLE address to indicate The first target device that receives the LE Audio broadcast message establishes a corresponding LE Audio Bluetooth connection with the first Bluetooth audio device after confirming that it points to itself.

In some embodiments, the above-mentioned Bluetooth device address may include two parts, one part of which may include a random number prand used for hash operation, and the other part may be obtained by hashing the random number prand with the above-mentioned IRK. . For example, the Bluetooth device address can include 48 bits, of which the high 24 bits can include 22 bits of random number prand and 2 bits of designated bits (such as 10, 01, etc., which can be used for identification, verification, etc.), and the low 24 bits can include It is obtained by the first Bluetooth audio device performing a hash operation based on the above-mentioned 22-bit random number prand and the IRK corresponding to the first target device. On this basis, the first Bluetooth audio device can generate a LE Audio broadcast message containing the Bluetooth address of the device in subsequent steps, and send the LE Audio broadcast message by broadcasting.

406. According to the Bluetooth address of the above device, generate a low-power Bluetooth broadcast message carrying the Bluetooth address of the device.

In this embodiment of the present application, the first Bluetooth audio device can further generate an LE Audio broadcast message carrying the Bluetooth address of the device based on the device Bluetooth address it generates for the first target device. Optionally, the LE Audio broadcast message may also include identification information of the first Bluetooth audio device itself, such as device address identification information, device identity identification information, device name identification information, device model identification information, etc., for receiving the After confirming that the terminal device of the LE Audio broadcast message is the first target device specified by the LE Audio broadcast message, the terminal device can initiate a low-power Bluetooth audio connection to the above-mentioned first Bluetooth audio device accordingly.

In some embodiments, after receiving the above LE Audio broadcast message, the first target device can obtain the Bluetooth address of the device it carries, and further extract the random number prand therein. On this basis, the first target device can hash the random number prand with its own IRK. If the verification Bluetooth address obtained matches the device Bluetooth address carried in the above LE Audio broadcast message, then it can Confirm that the above LE Audio broadcast message points to the first target device.

In other embodiments, after the second target device receives the above-mentioned LE Audio broadcast message, it can also extract the random number prand in the Bluetooth address of the device it carries, and perform a hash operation on the random number prand and its own IRK. , if the verification Bluetooth address obtained thereby does not match the device Bluetooth address carried in the above-mentioned LE Audio broadcast message, it can be confirmed that the above-mentioned LE Audio broadcast message is not directed to the second target device. On this basis, the above-mentioned matching first target device can initiate a low-power Bluetooth audio connection to the first Bluetooth audio device, while the unmatched second target device can ignore this LE Audio broadcast message, thereby achieving the first Directed connections for Bluetooth audio devices.

408. Send a low-power Bluetooth broadcast message carrying the Bluetooth address of the device.

Among them, step 408 is similar to the above-mentioned step 304. It should be noted that, after receiving the LE Audio broadcast message carrying the Bluetooth address of the above-mentioned device, if the terminal device determines that it is the first target device specified by the LE Audio broadcast message, the first target device can send a message to the first target device. The Bluetooth audio device sends a corresponding low-power Bluetooth audio connection request, so that the first Bluetooth audio device establishes a LE Audio Bluetooth connection with the first target device.

410. Receive the low-power Bluetooth audio connection request sent by the first target device.

412. In response to the low-power Bluetooth audio connection request, establish a low-power Bluetooth audio connection with the first target device.

Among them, step 410 and step 412 are similar to the above-mentioned step 306 and step 308, and will not be described again here.

It can be seen that by implementing the device connection method described in the above embodiment, the first Bluetooth audio device can send a "directional connectable" message to the first target device based on the identification information of the first target device that it quickly and accurately obtains through the SMP operation. LE Audio broadcast message, so that the first target device can establish a LE Audio Bluetooth connection with the above-mentioned first Bluetooth audio device under the trigger of the targeted LE Audio broadcast message. Such a device connection method can ensure that the LE Audio broadcast message sent by the first Bluetooth audio device can only be responded to by the first target device expected by the user, thereby avoiding misconnection between the first Bluetooth audio device and the second target device. It is beneficial to reduce the possibility of the first Bluetooth audio device mistakenly connecting to the terminal device, and effectively improves the accuracy and flexibility of the communication connection of the first Bluetooth audio device. In addition, the first Bluetooth audio device uses the IRK of the first target device to calculate the RPA type BLE address, which can ensure that the corresponding LE Audio broadcast message can only be correctly parsed and matched by the first target device, thereby being able to give the above LE Audio The "directionally connectable" feature of the broadcast message is conducive to improving the accuracy and reliability of the first Bluetooth audio device's directional connection to the terminal device.

Please refer to Figure 5. Figure 5 is a schematic flow chart of yet another device connection method disclosed in an embodiment of the present application. This method can be applied to the above-mentioned first Bluetooth audio device. The first Bluetooth audio device can be connected to a second Bluetooth audio device. A communication connection is established, wherein the second Bluetooth audio device and the first Bluetooth audio device may belong to the same Bluetooth device set. As shown in Figure 5, the device connection method may include the following steps:

502. Based on the security management protocol between the first Bluetooth audio device and the first target device, receive the security management information sent by the first target device.

Among them, step 502 is similar to the above-mentioned step 402. In the embodiment of this application, the first Bluetooth audio device and the second Bluetooth audio device that have established a classic Bluetooth connection can respectively establish LE Audio Bluetooth connections with the first target device to improve the flexibility of communication connections between the Bluetooth audio devices. At the same time, It is also helpful to improve the reliability of audio data transmission by various Bluetooth audio devices based on BLE technology.

It should be noted that based on the difference in the subject initiating the classic Bluetooth connection request (for example, the page packet may be issued by the first target device, the first Bluetooth audio device or the second Bluetooth audio device in different scenarios), or in response to the classic Bluetooth connection request Subject differences (for example, in different scenarios, the page scan mode can be turned on by the first target device, the second Bluetooth audio device, or the second Bluetooth audio device to receive the page packet), when it is necessary to establish a classic Bluetooth connection with the first target device , it can be that the first Bluetooth audio device establishes a classic Bluetooth connection with the first target device, or it can be that a device in the same group of the first Bluetooth audio device (i.e., the second Bluetooth audio device) establishes a classic Bluetooth connection with the first target device, It is also possible that the first Bluetooth audio device and the second Bluetooth audio device establish a classic Bluetooth connection with the first target device at the same time. On this basis, no matter how the first Bluetooth audio device and/or the second Bluetooth audio device establishes a classic Bluetooth connection with the first target device, the first Bluetooth audio device and the second Bluetooth audio device can be used in subsequent steps. Synchronize the security management information sent by the first target device, or directly synchronize the identification information of the first target device determined by the security management information, and turn on the respective LE Audio broadcast to send the above identification respectively. The LE Audio broadcast message corresponding to the information can then establish a LE Audio Bluetooth connection with the first target device respectively.

In some embodiments, the first Bluetooth audio device and the second Bluetooth audio device may have a master-slave relationship. Taking the first Bluetooth audio device and the second Bluetooth audio device as both earphone devices as an example, the first Bluetooth audio device may As the master earphone, the second Bluetooth audio device can be the slave earphone. At this time, the first Bluetooth audio device as the master earphone can establish a classic Bluetooth connection with the first target device, and based on the first Bluetooth audio device and the first target device The security management protocol between the two devices receives the security management information sent by the first target device. On this basis, the second Bluetooth audio device can synchronously obtain the above-mentioned security management information through the classic Bluetooth connection with the first Bluetooth audio device, or synchronously obtain the identity of the first target device determined by the security management information. information.

504. Based on the above security management information, determine the identification information of the first target device, and send a low-power Bluetooth broadcast message corresponding to the identification information.

Among them, step 504 is similar to the above-mentioned step 404 and step 406. The identification information of the first target device may include the device Bluetooth address of the first target device, that is, the first Bluetooth audio device may send an LE Audio broadcast carrying the device Bluetooth address. message, the LE Audio broadcast message can be used to instruct the first target device to initiate a low-power Bluetooth audio connection to the first Bluetooth audio device.

506. Send the identification information of the first target device to the second Bluetooth audio device, so that the second Bluetooth audio device sends a low-power Bluetooth broadcast message corresponding to the identification information.

In this embodiment of the present application, the first Bluetooth audio device may, after determining the identification information of the first target device based on the above security management information, actively send the identification information to the second Bluetooth audio device to implement the first Bluetooth audio device. Synchronize information with the second Bluetooth audio device. Wherein, the above-mentioned identification information may include the device Bluetooth address of the first target device, so that the second Bluetooth audio device may also send an LE Audio broadcast message carrying the Bluetooth address of the device. The LE Audio broadcast message may be used to instruct the first target device to The second Bluetooth audio device initiates a low-power Bluetooth audio connection.

As an optional implementation, the second Bluetooth audio device can also use monitoring data to obtain the identification information of the first target device through monitoring, so as to realize the information exchange between the first Bluetooth audio device and the second Bluetooth audio device. Synchronize. It should be noted that since the process of calculating the security management information sent by the first target device to obtain the identification information of the first target device is completed within the first Bluetooth audio device, the second Bluetooth audio device does not The monitoring directly obtains the above identification information, but obtains the above security management information (that is, the monitoring data may include the security management information), and the second Bluetooth audio device performs similar calculations on the security management information to obtain the first target device's Identification information. For example, the first Bluetooth audio device may receive the security management information sent by the first target device through the classic Bluetooth link between it and the first target device. The security management information may include the IRK of the first target device. , so that the first Bluetooth audio device can use the specified random number prand_1 to calculate the IRK and obtain the BLE address for the first target device. At the same time, the second Bluetooth audio device can monitor the classic Bluetooth link between the first Bluetooth audio device and the first target device, and obtain the security management information sent by the first target device based on the monitoring data, and then can Using another specified random number prand_2 (which may or may not be the same as the above prand_1), the IRK contained in the security management information is calculated to obtain the BLE address of the first target device. On this basis, both the first Bluetooth audio device and the second Bluetooth audio device can send a "directed connectable" LE Audio broadcast message directed to the first target device to instruct the first target device to communicate with the first Bluetooth audio device respectively. The device and the second Bluetooth audio device establish a LE Audio Bluetooth connection.

508. Receive the low-power Bluetooth audio connection request sent by the first target device.

510. In response to the above low-power Bluetooth audio connection request, establish a low-power Bluetooth audio connection with the first target device.

Among them, step 508 and step 510 are similar to the above-mentioned step 306 and step 308. It should be noted that in this embodiment of the present application, in addition to the first Bluetooth audio device, the second Bluetooth audio device can also perform the

above steps

508 and 510 at the same time, that is, the first Bluetooth audio device and the second Bluetooth audio device can Establish a LE Audio Bluetooth connection with the first target device respectively.

It can be seen that by implementing the device connection method described in the above embodiment, the Bluetooth audio device can send a "directed connectable" LE to the first target device based on the identification information of the first target device quickly and accurately obtained through the SMP operation. Audio broadcast message, so that the first target device can establish a LE Audio Bluetooth connection with the above-mentioned Bluetooth audio device under the trigger of the targeted LE Audio broadcast message. Such a device connection method can ensure that the LE Audio broadcast message sent by the Bluetooth audio device can only be responded to by the first target device expected by the user, thereby preventing the Bluetooth audio device from being mistakenly connected to the second target device, which is conducive to reducing the cost of Bluetooth audio. The possibility of audio equipment mistakenly connecting to terminal equipment effectively improves the accuracy and flexibility of communication connections for Bluetooth audio equipment. In addition, by synchronizing the identification information of the first target device between the first Bluetooth audio device and the second Bluetooth audio device, the first Bluetooth audio device and the second Bluetooth audio device can establish LE Audio Bluetooth with the first target device respectively. connection to improve the flexibility of communication connections for Bluetooth audio devices, and also help improve the reliability of audio data transmission by each Bluetooth audio device based on BLE technology.

Please refer to Figure 6. Figure 6 is a schematic flowchart of yet another device connection method disclosed in an embodiment of the present application. This method can be applied to the above-mentioned second Bluetooth audio device. As shown in Figure 6, the device connection method may include the following steps:

602. Monitor the Bluetooth link between the first Bluetooth audio device and the first target device to obtain monitoring data, where the second Bluetooth audio device and the first Bluetooth audio device belong to the same Bluetooth device set.

604. Based on the above monitoring data, calculate the identification information of the first target device.

Steps

602 and 604 are similar to the implementation process in which the second Bluetooth audio device uses monitoring data to obtain the identification information of the first target device through monitoring in the above embodiment, and will not be described again here. It should be noted that when the above-mentioned monitoring data includes the security management information of the first target device, and the security management information includes the Bluetooth device address resolution key IRK, and the above-mentioned identification information includes the device Bluetooth address, the second Bluetooth audio device The IRK can be calculated according to the relevant parsing and calculation rules of the above IRK to generate the device Bluetooth address of the first target device.

606. Send a Bluetooth Low Energy broadcast message corresponding to the identification information. The Bluetooth Low Energy broadcast message is used to indicate that the second Bluetooth audio device can respond to the Bluetooth Low Energy audio connection request initiated by the first target device.

608. Receive the low-power Bluetooth audio connection request sent by the first target device.

610. In response to the above low-power Bluetooth audio connection request, establish a low-power Bluetooth audio connection with the first target device.

Among them, step 606, step 608 and step 610 are similar to the above-mentioned step 304, step 306 and step 308 respectively. The second Bluetooth audio device can use the same method as the first Bluetooth audio device to send a "directed connectable" LE Audio broadcast message to the first target device to establish a LE Audio Bluetooth connection with the first target device in a targeted manner.

As an optional implementation, the above-mentioned first Bluetooth audio device can directly send the identification information to the second Bluetooth device after it successfully obtains the identification information of the first target device according to the security management information of the first target device. Audio equipment. On this basis, the second Bluetooth audio device can directly obtain the identification information of the first target device by receiving, that is, the second Bluetooth audio device can receive the identification information of the first target device sent by the first Bluetooth audio device, Then, the

above steps

606, 608 and 610 can be executed to establish a low-power Bluetooth audio connection with the first target device.

Please refer to FIG. 7 . FIG. 7 is a schematic flowchart of a device connection method disclosed in an embodiment of the present application. This method can be applied to the above-mentioned terminal device (ie, the first target device in the above-mentioned embodiment). As shown in Figure 7, the device connection method may include the following steps:

702. Based on the security management protocol between the first Bluetooth audio device and the terminal device, send security management information corresponding to the identification information of the terminal device to the first Bluetooth audio device.

In the embodiment of the present application, in order for the Bluetooth audio device (such as the above-mentioned first Bluetooth audio device and/or the second Bluetooth audio device) to establish a Bluetooth connection with the terminal device specifically, including establishing a LE Audio Bluetooth connection, it is necessary The first Bluetooth audio device sends a "directed connectable" LE Audio broadcast message to instruct the terminal device to send a corresponding low-power Bluetooth audio connection request to the first Bluetooth audio device. For example, the terminal device can send the security management information corresponding to its identification information to the first Bluetooth audio device, so that the first Bluetooth audio device can respond to the security management information, obtain the identification information of the terminal device, and based on the The identification information sends a LE Audio broadcast message targeted at the terminal device.

In some embodiments, the terminal device can configure the connection between the first Bluetooth audio device and the terminal device through a Bluetooth link (including a classic Bluetooth link or an LE Bluetooth link) between the terminal device and the first Bluetooth audio device. Security management protocol, so that both the terminal device and the first Bluetooth audio device can perform SMP operations based on the security management protocol on the Bluetooth link between the two, so that the SMP operation can be used to transmit the above security management information. Among them, the above-mentioned security management protocol can be used to manage the pairing, authentication, encryption and other Bluetooth device interaction operations specified in the protocol between Bluetooth audio devices and terminal devices, including the transfer of designated private information, etc., to assist in the implementation of Bluetooth audio The device's directed connection to this end device.

On this basis, the terminal device can send security management information corresponding to the identification information of the terminal device to the first Bluetooth audio device through an SMP operation based on the above security management protocol. For example, the above identification information may include the device Bluetooth address of the terminal device, and the device Bluetooth address may be determined by the Bluetooth device address resolution key IRK corresponding to the terminal device, then the above security management information may only include the device corresponding to the terminal device. The IRK may also include encrypted data packets containing the above IRK, etc. After receiving the security management information, the first Bluetooth audio device can extract the IRK corresponding to the terminal device, and further calculate the device Bluetooth address for the terminal device according to the calculation rules corresponding to the security management information, and then can generate and send the Bluetooth address of the terminal device. "Directed Connectable" LE Audio broadcast message of the device's Bluetooth address.

704. Receive the first low-power Bluetooth broadcast message sent by the first Bluetooth audio device in response to the above security management information.

In this embodiment of the present application, after the terminal device sends the above security management information to the first Bluetooth audio device, the first Bluetooth audio device can obtain the identification information of the terminal device (such as the device Bluetooth address of the terminal device) based on the security management information. etc.), and then the LE Audio broadcast message corresponding to the identification information can be sent. On this basis, the terminal device can receive the above-mentioned LE Audio broadcast message, and judge the LE Audio broadcast message in subsequent steps. If it is confirmed that it points to the terminal device itself, it can initiate a request to the first Bluetooth audio device accordingly. LE Audio Bluetooth connection.

706. When it is determined that the first Bluetooth Low Energy broadcast message corresponds to the identification information of the terminal device, in response to the first Bluetooth Low Energy broadcast message, send a Bluetooth Low Energy audio connection request to the first Bluetooth audio device. , so that the first Bluetooth audio device responds to the low-power Bluetooth audio connection request and establishes a low-power Bluetooth audio connection with the terminal device.

In the embodiment of this application, when the terminal device receives the first LE Audio broadcast message of "directional connectability" sent by the first Bluetooth audio device, it can determine whether the first LE Audio broadcast message is directed to the terminal device itself, To determine whether a LE Audio Bluetooth connection needs to be established with the first Bluetooth audio device.

For example, when the identification information includes the Bluetooth address of the device, the terminal device can calculate the security management information it sends and the target Bluetooth address according to the calculation rules corresponding to the security management information to obtain the verification Bluetooth address. . For example, the terminal device can perform a hash operation on the IRK of the terminal device contained in the above security management information and the random number prand extracted from the target Bluetooth address to obtain the corresponding verification Bluetooth address. The terminal device can compare the above-mentioned target Bluetooth address and the verification Bluetooth address. If the target Bluetooth address matches the verification Bluetooth address, it can be determined that the above-mentioned first LE Audio broadcast message corresponds to the device Bluetooth address of the terminal device. That is, it can be confirmed that the above-mentioned first LE Audio broadcast message is directed to the terminal device. On this basis, the terminal device can respond to the above-mentioned first LE Audio broadcast message and send a low-power Bluetooth audio connection request to the first Bluetooth audio device to establish a LE Audio Bluetooth connection with the first Bluetooth audio device.

As an optional implementation manner, a second Bluetooth audio device that belongs to the same Bluetooth device set as the above-mentioned first Bluetooth audio device can also establish a LE Audio Bluetooth connection with the terminal device. Wherein, in the process of the terminal device sending the security management information corresponding to the identification information of the terminal device to the first Bluetooth audio device, the first Bluetooth audio device may determine the identification information of the terminal device based on the security management information, Information synchronization is performed with the second Bluetooth audio device so that the second Bluetooth audio device can obtain the identification information of the above-mentioned terminal device.

In some embodiments, after determining the above identification information, the first Bluetooth audio device can actively send the identification information to the second Bluetooth audio device, so that the second Bluetooth audio device can also similarly send the identification information corresponding to the identification information. The second LE Audio broadcast message.

In other embodiments, the second Bluetooth audio device can monitor the Bluetooth link between the first Bluetooth audio device and the terminal device, and independently determine the identification information of the terminal device based on the security management information obtained by monitoring. , and then the second LE Audio broadcast message corresponding to the identification information can be sent.

On this basis, the terminal device can respectively determine whether the LE Audio broadcast message sent by the first Bluetooth audio device and the second Bluetooth audio device corresponds to the identification information of the terminal device, and confirm the sending of the corresponding LE Audio broadcast message. The terminal (i.e., the above-mentioned first Bluetooth audio device and/or the second Bluetooth audio device) sends a corresponding low-power Bluetooth audio connection request, so that the above-mentioned first Bluetooth audio device and/or the second Bluetooth audio device can respond to the low-power Bluetooth audio connection request. Power consumption Bluetooth audio connection request to establish a LE Audio Bluetooth connection with the terminal device.

In some embodiments, after receiving the second LE Audio broadcast message sent by the second Bluetooth audio device, the terminal device may also prioritize whether the second Bluetooth audio device and the first Bluetooth audio device belong to the same Bluetooth device set. , and only when the two belong to the same Bluetooth device set, the LE Audio Bluetooth connection is allowed to be established with the second Bluetooth audio device to avoid mistakenly connecting other Bluetooth audio devices belonging to different sets.

For example, the terminal device can determine whether the corresponding second Bluetooth audio device and the first Bluetooth audio device belong to the same Bluetooth device set based on the above-mentioned second LE Audio broadcast message and the first LE Audio broadcast message. For example, after receiving the first LE Audio broadcast message, the terminal device can obtain the device identification (such as IRK, device Bluetooth address, product identification code, etc.) of the corresponding first Bluetooth audio device, and add it to the candidate list. list or whitelist. Then, after receiving the second LE Audio broadcast message, the terminal device can obtain the same type of device identification for the second Bluetooth audio device and compare it with the device identification in the above candidate list or white list. If it is confirmed through comparison that the device identifiers of the first Bluetooth audio device and the second Bluetooth audio device match, the terminal device can determine that the first Bluetooth audio device and the second Bluetooth audio device belong to the same Bluetooth device set, and can then determine If the second LE Audio broadcast message also corresponds to the identification information of the terminal device, further send a low-power Bluetooth audio connection request to the second Bluetooth audio device, so that the second Bluetooth audio device responds to the low-power Bluetooth audio connection request. Power consumption Bluetooth audio connection request to establish a LE Audio Bluetooth connection with the terminal device.

It can be seen that by implementing the device connection method described in the above embodiment, the terminal device can perform SMP operations with the Bluetooth audio device, so that the Bluetooth audio device can quickly and accurately obtain the identification information of the terminal device and send it to the terminal device. Send a "directed connectable" LE Audio broadcast message, so that the terminal device can establish a LE Audio Bluetooth connection with the above-mentioned Bluetooth audio device when triggered by the targeted LE Audio broadcast message. Such a device connection method can ensure that the LE Audio broadcast message sent by the Bluetooth audio device can only be responded to by the terminal device expected by the user, thereby preventing the Bluetooth audio device from being mistakenly connected to other devices in a connectable state, and helping to reduce the risk of The possibility of Bluetooth audio devices mistakenly connecting to terminal devices effectively improves the accuracy and flexibility of communication connections for Bluetooth audio devices. In addition, by sending the IRK of the terminal device to the Bluetooth audio device, the Bluetooth audio device can calculate the corresponding RPA type BLE address, thereby ensuring that the corresponding LE Audio broadcast message can only be correctly parsed and matched by the terminal device. It is beneficial to improve the accuracy and reliability of directional connection of Bluetooth audio devices to terminal devices. In addition, by synchronizing the identification information of the terminal device between the first Bluetooth audio device and the second Bluetooth audio device, the terminal device can establish LE Audio Bluetooth connections with the first Bluetooth audio device and the second Bluetooth audio device respectively to improve The flexibility of communication and connection between terminal devices and Bluetooth audio devices also helps improve the reliability of audio data transmission by each headset based on BLE technology.

Please refer to Figure 8. Figure 8 is a sequence diagram of a device connection method disclosed in an embodiment of the present application. This method can be applied to Bluetooth communication composed of the above-mentioned first Bluetooth audio device and terminal device (ie, the first target device). in the system. As shown in Figure 8, the device connection method may include the following steps:

802. When the first Bluetooth audio device establishes a classic Bluetooth connection with the first target device, the first target device sends a request to the first Bluetooth device based on the security management protocol between the first Bluetooth audio device and the first target device. The audio device sends security management information corresponding to the identification information of the first target device.

For example, the above security management information may include the IRK of the first target device, that is, the first target device may transmit its IRK to the first Bluetooth audio device through an SMP operation based on the security management protocol.

804. The first Bluetooth audio device receives the security management information sent by the first target device based on the security management protocol between the first Bluetooth audio device and the first target device, and determines the first Bluetooth audio device based on the security management information. Identification information of the target device.

806. The first Bluetooth audio device sends the first low-power Bluetooth broadcast message corresponding to the above identification information.

For example, the above-mentioned identification information may include the device Bluetooth address, then the first Bluetooth audio device may calculate the security management information according to the calculation rules corresponding to the above-mentioned security management information (that is, calculate the IRK of the first target device), To generate the device Bluetooth address of the first target device, and then generate and send the LE Audio broadcast message carrying the device Bluetooth address according to the device Bluetooth address.

808. The first target device receives the first Bluetooth low energy broadcast message, and when it is determined that the first Bluetooth low energy broadcast message corresponds to the identification information of the first target device, responds to the first Bluetooth low energy broadcast message. Broadcast message to send low-power Bluetooth audio connection request to the first Bluetooth audio device.

810. The first Bluetooth audio device receives the low-power Bluetooth audio connection request sent by the first target device, and responds to the low-power Bluetooth audio connection request to establish a low-power Bluetooth audio connection with the first target device.

Optionally, before establishing a Bluetooth connection with the first target device, the first Bluetooth audio device may also establish a Bluetooth connection with another device (which may be recorded as the second target device). Exemplarily, before performing the above step 802, the device connection method may also include the following steps:

801A. The first Bluetooth audio device disconnects the Bluetooth connection from the second target device, and the identification information of the second target device is different from the identification information of the first target device.

For example, the above-mentioned Bluetooth connection may include a classic Bluetooth connection and/or a LE Audio Bluetooth connection, which is not specifically limited in the embodiments of this application.

801B. The first Bluetooth audio device enters the pairing state.

The above-mentioned pairing state means that the first Bluetooth audio device is in a discoverable and connectable state. In the pairing state, the first Bluetooth audio device can stop sending any LE Audio broadcast messages.

801C. When it is determined that the first Bluetooth audio device is in the pairing state, the first target device sends a classic Bluetooth connection request to the first Bluetooth audio device.

It should be noted that the first target device can discover the first Bluetooth audio device in the paired state by scanning, and automatically or manually confirm by the user to initiate a classic Bluetooth connection to the first Bluetooth audio device. In some embodiments, when the first target device initiates a classic Bluetooth connection to the first Bluetooth audio device, the first Bluetooth audio device can be added to the whitelist of the first target device to facilitate subsequent rapid connection back. , reconnect and other operations, and also help to assist in verification when establishing a LE Audio Bluetooth connection with the first Bluetooth audio device. In other embodiments, the first target device may only add the first Bluetooth audio device to the whitelist of the first target device when it initiates a LE Audio Bluetooth connection to the first Bluetooth audio device, so that it can be maintained through maintenance The above whitelist speeds up the subsequent process of confirming whether the LE Audio broadcast message sent by the first Bluetooth audio device corresponds to the identification information of the first target device, and helps to improve the establishment of a Bluetooth connection between the first Bluetooth audio device and the terminal device. , especially the efficiency of establishing LE Audio Bluetooth connections.

801D. The first Bluetooth audio device receives the classic Bluetooth connection request sent by the first target device, and responds to the classic Bluetooth connection request to establish a classic Bluetooth connection with the first target device.

On this basis, by further performing the above steps 802 to 810, the Bluetooth audio device can establish a LE Audio Bluetooth connection with the first target device expected by the user in a directional manner.

It should be noted that when the above-mentioned second target device receives the LE Audio broadcast message corresponding to the identification information of the first target device sent by the first Bluetooth audio device, it may not respond and discard the LE Audio broadcast message, thereby effectively Avoid misconnection between the first Bluetooth audio device and the second target device.

Please refer to Figure 9 together. Figure 9 is a sequence diagram of another device connection method disclosed in an embodiment of the present application. This method can be applied to the first Bluetooth audio device, the second Bluetooth audio device and the terminal device (i.e., the first Bluetooth audio device). In a Bluetooth communication system composed of a target device), the first Bluetooth audio device and the second Bluetooth audio device may belong to the same Bluetooth device set. For example, taking the first Bluetooth audio device and the second Bluetooth audio device as both Bluetooth audio devices, the first Bluetooth audio device may be the master Bluetooth audio device, and the second Bluetooth audio device may be the slave Bluetooth audio device. . As shown in Figure 9, the device connection method may include the following steps:

902. The first target device sends security management information corresponding to the identification information of the first target device to the first Bluetooth audio device based on the security management protocol between the first Bluetooth audio device and the first target device.

904. The first Bluetooth audio device receives the security management information sent by the first target device based on the security management protocol between the first Bluetooth audio device and the first target device, and determines the first Bluetooth audio device based on the security management information. Identification information of the target device.

For example, the above security management information may include the IRK of the first target device, that is, the first target device may transmit its IRK to the first Bluetooth audio device through an SMP operation based on the security management protocol. On this basis, the above-mentioned identification information may include the Bluetooth address of the device, and the first Bluetooth audio device may calculate the security management information (that is, calculate the IRK of the first target device) according to the calculation rules corresponding to the above-mentioned security management information. , to determine the device Bluetooth address of the first target device, and apply it to the subsequent steps of sending the "directed connectable" LE Audio broadcast message.

906. The first Bluetooth audio device sends the identification information of the first target device to the second Bluetooth audio device.

In this embodiment of the present application, after determining the identification information of the first target device (such as the device Bluetooth address of the first target device, etc.), the first Bluetooth audio device can actively send the identification information to the second Bluetooth audio device. , to achieve information synchronization between the first Bluetooth audio device and the second Bluetooth audio device.

In other embodiments, the second Bluetooth audio device may also obtain the identification information of the first target device through monitoring to achieve information synchronization between the first Bluetooth audio device and the second Bluetooth audio device. For example, the second Bluetooth audio device can monitor the classic Bluetooth link between the first Bluetooth audio device and the first target device, obtain the security management information sent by the first target device, and then independently determine the second Bluetooth audio device. Identification information of a target device and apply it to subsequent steps of sending "directed connectable" LE Audio broadcast messages.

908A. The first Bluetooth audio device sends the first low-power Bluetooth broadcast message corresponding to the above identification information.

908B. The second Bluetooth audio device sends a second low-power Bluetooth broadcast message corresponding to the above identification information.

910. The first target device receives the low-power Bluetooth broadcast message sent by the first Bluetooth audio device and the second Bluetooth audio device respectively, and determines that the low-power Bluetooth broadcast message corresponds to the identification information of the first target device. Next, in response to the low-power Bluetooth audio broadcast message, send a low-power Bluetooth audio connection request to the corresponding first Bluetooth audio device and/or the second Bluetooth audio device.

912A. The first Bluetooth audio device receives the low-power Bluetooth audio connection request sent by the first target device, and responds to the low-power Bluetooth audio connection request to establish a low-power Bluetooth audio connection with the first target device.

912B. The second Bluetooth audio device receives the low-power Bluetooth audio connection request sent by the first target device, and responds to the low-power Bluetooth audio connection request to establish a low-power Bluetooth audio connection with the first target device.

It should be noted that, similar to the above steps 701A to 701D, the first Bluetooth audio device and the second Bluetooth audio device may also establish a Bluetooth connection with the second target device, which is not shown in FIG. 9 . When the second target device receives the LE Audio broadcast message corresponding to the identification information of the first target device sent by the first Bluetooth audio device and/or the second Bluetooth audio device, it may not respond and discard the LE Audio broadcast message, Thus, misconnection with the first Bluetooth audio device and/or the second Bluetooth audio device can be effectively avoided.

It can be seen that by implementing the device connection method described in the above embodiment, the Bluetooth audio device can quickly and accurately obtain the identification information of the first target device by performing SMP operations with the first target device on the classic Bluetooth link, and thus can Based on the identification information of the first target device, a "directed connectable" LE Audio broadcast message is sent to the first target device, so that the first target device can communicate with the above-mentioned Bluetooth under the trigger of the targeted LE Audio broadcast message. The audio device establishes a LE Audio Bluetooth connection. Such a device connection method can ensure that the LE Audio broadcast message sent by the Bluetooth audio device can only be responded to by the first target device expected by the user, and the second target device with different identification information receives the above LE Audio broadcast message. No response is required. As a result, the Bluetooth audio device can be prioritized to establish a LE Audio Bluetooth connection with the first target device, and the Bluetooth audio device can be prevented from being mistakenly connected to the second target device, which is beneficial to reducing the possibility of the Bluetooth audio device being mistakenly connected to the terminal device, and effectively improving the The accuracy and flexibility of communication connections for Bluetooth audio devices.

Please refer to Figure 10. Figure 10 is a modular schematic diagram of a device connection device disclosed in an embodiment of the present application. The device connection device can be applied to the above-mentioned first Bluetooth audio device. As shown in Figure 10, the device connection device may include an information acquisition unit 1001, a first broadcast sending unit 1002, a first request receiving unit 1003 and a first connection unit 1004, where:

The information acquisition unit 1001 is configured to acquire the identification information of the first target device based on the security management protocol between the first Bluetooth audio device and the first target device;

The first broadcast sending unit 1002 is configured to send a low-power Bluetooth broadcast message corresponding to the above identification information. The low-power Bluetooth broadcast message is used to indicate that the first Bluetooth audio device can respond to the first target device to initiate low-power Bluetooth audio. connection request;

The first request receiving unit 1003 is configured to receive a low-power Bluetooth audio connection request sent by the first target device;

The first connection unit 1004 is configured to establish a low-power Bluetooth audio connection with the first target device in response to the low-power Bluetooth audio connection request.

It can be seen that using the device connection device described in the above embodiment, the Bluetooth audio device can quickly and accurately obtain the identification information of the first target device by performing SMP operations with the first target device on the classic Bluetooth link, and thus can Based on the identification information of the first target device, a "directed connectable" LE Audio broadcast message is sent to the first target device, so that the first target device can communicate with the above-mentioned Bluetooth under the trigger of the targeted LE Audio broadcast message. The audio device establishes a LE Audio Bluetooth connection. Such a device connection method can ensure that the LE Audio broadcast message sent by the Bluetooth audio device can only be responded to by the first target device expected by the user, and the second target device with different identification information receives the above LE Audio broadcast message. No response is required. Therefore, the Bluetooth audio device can be prioritized to establish a LE Audio Bluetooth connection with the first target device, and the Bluetooth audio device can be prevented from being mistakenly connected to the second target device, which is conducive to reducing the possibility of the Bluetooth audio device being mistakenly connected to the terminal device, and effectively improving the The accuracy and flexibility of communication connections for Bluetooth audio devices.

In one embodiment, the device connection device may also include an information synchronization unit (not shown). The information synchronization unit may be used to send identification information of the first target device to the second Bluetooth audio device, so that the second Bluetooth audio device The audio device sends a low-power Bluetooth broadcast message corresponding to the identification information.

Optionally, the second Bluetooth audio device may also monitor the Bluetooth link between the first Bluetooth audio device and the first target device, and calculate the identification information of the first target device based on the monitoring data.

Wherein, the above-mentioned second Bluetooth audio device may belong to the same Bluetooth device set as the first Bluetooth audio device.

In one embodiment, the above-mentioned information acquisition unit 1001 may include a receiving subunit and a determining subunit (not shown), where:

A receiving subunit configured to receive security management information sent by the first target device based on the security management protocol between the first Bluetooth audio device and the first target device;

The determining subunit is used to determine the identification information of the first target device according to the security management information.

In one embodiment, the above receiving subunit can be used for:

Configuring a security management protocol between the first Bluetooth audio device and the first target device through the Bluetooth link between the first Bluetooth audio device and the first target device;

Based on the above security management protocol, receive security management information sent by the first target device.

Wherein, the above-mentioned Bluetooth link may be an asynchronous connectionless ACL type Bluetooth link.

In one embodiment, the above-mentioned identification information may include the device Bluetooth address, and the above-mentioned security management information may include the Bluetooth device address resolution key IRK, then the above-mentioned determination subunit may be used to:

According to the calculation rules corresponding to the above IRK, the IRK is calculated to generate the device Bluetooth address of the first target device.

In some embodiments, the above-mentioned first Bluetooth audio device may be a device that supports the simultaneous establishment of a classic Bluetooth connection and a low-power Bluetooth audio connection. On this basis, the device connection device acquires the first target device in the above-mentioned information acquisition unit 1001. Before entering the identification information, you can also enter the pairing state (which can be implemented by a pairing unit not shown). The pairing state means that the Bluetooth audio device is discoverable and connectable;

On this basis, the above-mentioned first request receiving unit 1003 can also be used to:

Receive the classic Bluetooth connection request sent by the first target device;

The above-mentioned first connection unit 1004 can also be used for:

In response to the classic Bluetooth connection request, establish a classic Bluetooth connection with the first target device;

Therefore, the above-mentioned information acquisition unit 1001 can be specifically configured to obtain the first target based on the security management protocol between the first Bluetooth audio device and the first target device on the classic Bluetooth link with the first target device. Identification information of the device.

Optionally, before entering the pairing state, the device connection device can also disconnect the Bluetooth connection with the second target device (which can be implemented by the first connection unit 1004), and the identification information of the second target device is the same as that of the first target device. The identification information is not the same;

Wherein, when the second target device receives the Bluetooth low energy broadcast message corresponding to the identification information of the first target device sent by the Bluetooth audio device, it may not respond and discard the Bluetooth low energy broadcast message.

Alternatively, the above-mentioned first Bluetooth audio device may also be a device that only supports establishing a low-power Bluetooth audio connection. On this basis, the above-mentioned first connection unit 1004 may also be used for:

Establish a low-power Bluetooth connection with the first target device;

Therefore, the above-mentioned information acquisition unit 1001 can be specifically configured to obtain the third Bluetooth audio device based on the security management protocol between the first Bluetooth audio device and the first target device on the low-power Bluetooth link with the first target device. Identification information of a target device.

It can be seen that using the device connection device described in the above embodiment, the Bluetooth audio device can send a "directed connectable" LE to the first target device based on the identification information of the first target device quickly and accurately obtained through the SMP operation. Audio broadcast message, so that the first target device can establish a LE Audio Bluetooth connection with the above-mentioned Bluetooth audio device under the trigger of the targeted LE Audio broadcast message. Such a device connection method can ensure that the LE Audio broadcast message sent by the Bluetooth audio device can only be responded to by the first target device expected by the user, thereby preventing the Bluetooth audio device from being mistakenly connected to the second target device, which is conducive to reducing the cost of Bluetooth audio. The possibility of audio equipment mistakenly connecting to terminal equipment effectively improves the accuracy and flexibility of communication connections for Bluetooth audio equipment. In addition, the Bluetooth audio device uses the IRK of the first target device to calculate the RPA type BLE address, which can ensure that the corresponding LE Audio broadcast message can only be correctly parsed and matched by the first target device, so that the above LE Audio broadcast message can be given The "directionally connectable" feature helps improve the accuracy and reliability of Bluetooth audio devices' directional connection to terminal devices. In addition, by synchronizing the identification information of the first target device between the first Bluetooth audio device and the second Bluetooth audio device, the first Bluetooth audio device and the second Bluetooth audio device can establish LE Audio Bluetooth with the first target device respectively. connection to improve the flexibility of communication connections for Bluetooth audio devices, and also help improve the reliability of audio data transmission by each headset based on BLE technology.

Please refer to FIG. 11 , which is a modular schematic diagram of another device connection device disclosed in an embodiment of the present application. The device connection device can be applied to the above-mentioned second Bluetooth audio device. As shown in Figure 11, the device connection device may include a listening unit 1101, a computing unit 1102, a second broadcast sending unit 1103, a second request receiving unit 1104 and a second connection unit 1105, where:

The monitoring unit 1101 is used to monitor the Bluetooth link between the first Bluetooth audio device and the first target device and obtain monitoring data, where the second Bluetooth audio device and the first Bluetooth audio device belong to the same Bluetooth device set;

The calculation unit 1102 is configured to calculate the identification information of the first target device according to the monitoring data;

The second broadcast sending unit 1103 is used to send a low-power Bluetooth broadcast message corresponding to the identification information. The low-power Bluetooth broadcast message is used to instruct the second Bluetooth audio device to respond to the low-power Bluetooth audio connection request initiated by the first target device. ;

The second request receiving unit 1104 is configured to receive a low-power Bluetooth audio connection request sent by the first target device;

The second connection unit 1105 is configured to respond to a low-power Bluetooth audio connection request and establish a low-power Bluetooth audio connection with the first target device.

In one embodiment, the above-mentioned monitoring data may include security management information of the first target device. The security management information may specifically include the Bluetooth device address resolution key IRK. The above-mentioned identification information may include the device Bluetooth address, so that the above-mentioned computing unit 1102 can be specifically used for:

According to the calculation rules corresponding to the IRK, the IRK is calculated to generate the device Bluetooth address of the first target device.

Please also refer to FIG. 12 , which is a modular schematic diagram of yet another device connection device disclosed in an embodiment of the present application. The device connection device can also be applied to the above-mentioned second Bluetooth audio device. As shown in Figure 12, the device connection device may include an information receiving unit 1201, a third broadcast sending unit 1202, a third request receiving unit 1203 and a third connection unit 1204, where:

The information receiving unit 1201 is configured to receive the identification information of the first target device sent by the first Bluetooth audio device, where the second Bluetooth audio device and the first Bluetooth audio device belong to the same Bluetooth device set;

The third broadcast sending unit 1202 is used to send a low-power Bluetooth broadcast message corresponding to the identification information. The low-power Bluetooth broadcast message is used to instruct the second Bluetooth audio device to respond to the low-power Bluetooth audio connection request initiated by the first target device. ;

The third request receiving unit 1203 is configured to receive a low-power Bluetooth audio connection request sent by the first target device;

The third connection unit 1204 is configured to respond to a low-power Bluetooth audio connection request and establish a low-power Bluetooth audio connection with the first target device.

Please refer to Figure 13. Figure 13 is a modular schematic diagram of a fourth device connection device disclosed in an embodiment of the present application. This device connection device can be applied to the above-mentioned terminal equipment. As shown in Figure 13, the device connection device may include an information sending unit 1301, a broadcast receiving unit 1302 and a request sending unit 1303, where:

The information sending unit 1301 is configured to send security management information corresponding to the identification information of the terminal device to the first Bluetooth audio device based on the security management protocol between the first Bluetooth audio device and the terminal device;

The broadcast receiving unit 1302 is configured to receive the first low-power Bluetooth broadcast message sent by the first Bluetooth audio device in response to the above security management information;

The request sending unit 1303 is configured to send a low-power Bluetooth audio device to the first Bluetooth audio device in response to the first low-power Bluetooth broadcast message when it is determined that the first low-power Bluetooth broadcast message corresponds to the identification information of the terminal device. and a Bluetooth low energy audio connection request, so that the first Bluetooth audio device responds to the Bluetooth low energy audio connection request and establishes a low power Bluetooth audio connection with the terminal device.

In one embodiment, the above-mentioned information sending unit 1301 may include a protocol configuration subunit and an information sending subunit (not shown), wherein:

The protocol configuration subunit is used to configure the security management protocol between the first Bluetooth audio device and the terminal device through the Bluetooth link between the first Bluetooth audio device and the terminal device;

The information sending subunit is configured to send security management information corresponding to the identification information of the terminal device to the first Bluetooth audio device based on the above-mentioned security management protocol. The security management information is used to cause the first Bluetooth audio device to, according to the above-mentioned security management information, Determine the identification information of the terminal device, and send the first low-power Bluetooth broadcast message corresponding to the identification information.

In one embodiment, the above identification information may include the Bluetooth address of the device, then the above broadcast receiving unit 1302 may be used to:

Receive a first low-power Bluetooth broadcast message carrying a target Bluetooth address sent by the first Bluetooth audio device in response to the above security management information.

On this basis, the above request sending unit 1303 may include a calculation subunit, a comparison subunit and a sending subunit (not shown), where:

The calculation subunit is used to calculate the security management information and the target Bluetooth address according to the calculation rules corresponding to the above security management information to obtain the verification Bluetooth address;

Comparison subunit, used to compare the target Bluetooth address and the verification Bluetooth address;

The sending subunit is configured to determine that the first low-power Bluetooth broadcast message corresponds to the device Bluetooth address of the terminal device when the above-mentioned target Bluetooth address matches the verification Bluetooth address, and respond to the above-mentioned first low-power Bluetooth address. The Bluetooth consumption broadcast message sends a low-power Bluetooth audio connection request to the first Bluetooth audio device.

In one embodiment, the device connection device may also include a connection unit not shown, wherein:

The above request sending unit 1303 may also be used to determine that the first Bluetooth audio device is in a pairing state before the above information sending unit 1301 sends the security management information corresponding to the identification information of the terminal device to the first Bluetooth audio device. Send a classic Bluetooth connection request to the first Bluetooth audio device. The above pairing state means that the first Bluetooth audio device is in a discoverable and connectable state;

A connection unit configured to establish a classic Bluetooth connection with the first Bluetooth audio device that responds to the classic Bluetooth connection request.

In one embodiment, the above security management information can be used to enable the first Bluetooth audio device to determine the identification information of the terminal device based on the security management information, and the first Bluetooth audio device sends the identification information to the second Bluetooth audio device. The identification information of the terminal device, wherein the second Bluetooth audio device and the first Bluetooth audio device belong to the same Bluetooth device set; or the second Bluetooth audio device performs the Bluetooth link between the first Bluetooth audio device and the terminal device. Monitor, and calculate the identification information of the terminal device based on the above-mentioned security management information obtained by monitoring;

Wherein, the identification information of the terminal device is used for the first Bluetooth audio device and/or the second Bluetooth audio device to send a low-power Bluetooth broadcast message corresponding to the identification information.

In one embodiment, the above broadcast receiving unit 1302 can also be used to:

Receive the second low-power Bluetooth broadcast message sent by the second Bluetooth audio device;

On this basis, the device connection device can also determine whether the first Bluetooth audio device and the second Bluetooth audio device belong to the same Bluetooth device set based on the second Bluetooth low energy broadcast message and the first Bluetooth low energy broadcast message (can be determined by Judgment unit implementation not shown);

On this basis, the above request sending unit 1303 can be specifically used to:

When it is determined that the first Bluetooth audio device and the second Bluetooth audio device belong to the same Bluetooth device set, and the second Bluetooth Low Energy broadcast message corresponds to the identification information of the terminal device, in response to the second Bluetooth Low Energy Broadcast a message to send a low-power Bluetooth audio connection request to the second Bluetooth audio device, so that the second Bluetooth audio device responds to the low-power Bluetooth audio connection request and establishes a low-power Bluetooth audio connection with the terminal device.

It can be seen that by using the device connection device described in the above embodiment, the terminal device can perform SMP operation with the Bluetooth audio device, so that the Bluetooth audio device can quickly and accurately obtain the identification information of the terminal device and send it to the terminal device. Send a "directed connectable" LE Audio broadcast message, so that the terminal device can establish a LE Audio Bluetooth connection with the above-mentioned Bluetooth audio device when triggered by the targeted LE Audio broadcast message. Such a device connection method can ensure that the LE Audio broadcast message sent by the Bluetooth audio device can only be responded to by the terminal device expected by the user, thereby preventing the Bluetooth audio device from being mistakenly connected to other devices in a connectable state, and helping to reduce the risk of The possibility of Bluetooth audio devices mistakenly connecting to terminal devices effectively improves the accuracy and flexibility of communication connections for Bluetooth audio devices. In addition, by sending the IRK of the terminal device to the Bluetooth audio device, the Bluetooth audio device can calculate the corresponding RPA type BLE address, thereby ensuring that the corresponding LE Audio broadcast message can only be correctly parsed and matched by the terminal device. It is beneficial to improve the accuracy and reliability of directional connection of Bluetooth audio devices to terminal devices. In addition, by synchronizing the identification information of the terminal device between the first Bluetooth audio device and the second Bluetooth audio device, the terminal device can establish LE Audio Bluetooth connections with the first Bluetooth audio device and the second Bluetooth audio device respectively to improve The flexibility of communication and connection between terminal devices and Bluetooth audio devices also helps improve the reliability of audio data transmission by each headset based on BLE technology.

Please refer to Figure 14, which is a modular schematic diagram of a Bluetooth audio device disclosed in an embodiment of the present application. As shown in Figure 14, the Bluetooth audio device may include:

Memory 1401 storing executable program code;

processor 1402 coupled to memory 1401;

The processor 1402 calls the executable program code stored in the memory 1401 to execute all or part of the steps in any of the device connection methods described in the above embodiments that are applied to the first Bluetooth audio device or the second Bluetooth audio device. .

Please refer to FIG. 15 , which is a modular schematic diagram of a terminal device disclosed in an embodiment of the present application. As shown in Figure 15, the terminal device may include:

Memory 1501 storing executable program code;

processor 1502 coupled to memory 1501;

The processor 1502 calls the executable program code stored in the memory 1501 to execute all or part of the steps in any device connection method applied to the terminal device described in the above embodiments.

In addition, embodiments of the present application further disclose a computer-readable storage medium that stores a computer program for electronic data exchange, wherein the computer program enables the computer to perform any of the device connection methods described in the above embodiments. all or part of the steps.

In addition, the embodiment of the present application further discloses a computer program product. When the computer program product is run on a computer, the computer can perform all or part of the steps in any of the device connection methods described in the above embodiments.

Those of ordinary skill in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by instructing relevant hardware through a program. The program can be stored in a computer-readable storage medium, and the storage medium includes a read-only storage medium. Memory (Read-Only Memory, ROM), Random Access Memory (RAM), Programmable Read-only Memory (PROM), Erasable Programmable Read Only Memory, EPROM), One-time Programmable Read-Only Memory (OTPROM), Electronically Erasable Programmable Read-Only Memory (EEPROM), Compact Disc Read-Only Memory (CD-ROM) or other optical disk storage, magnetic disk storage, magnetic tape storage, or any other computer-readable medium that can be used to carry or store data.

The above is a detailed introduction to a device connection method, device, storage medium, and chip disclosed in the embodiments of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only for It helps to understand the methods and core ideas of this application; at the same time, for those of ordinary skill in the field, there will be changes in the specific implementation methods and application scope based on the ideas of this application. In summary, the content of this specification It should not be construed as a limitation on this application.

Claims

A device connection method, characterized in that it is applied to a first Bluetooth audio device, and the method includes:

Based on the security management protocol between the first Bluetooth audio device and the first target device, obtain the identification information of the first target device;

Send a low-power Bluetooth broadcast message corresponding to the identification information. The low-power Bluetooth broadcast message is used to indicate that the first Bluetooth audio device can respond to the low-power Bluetooth audio connection request initiated by the first target device. ;

Receive a low-power Bluetooth audio connection request sent by the first target device;

In response to the Bluetooth low energy audio connection request, a Bluetooth low energy audio connection is established with the first target device.
The method of claim 1, further comprising:

Send the identification information of the first target device to a second Bluetooth audio device, so that the second Bluetooth audio device sends a low-power Bluetooth broadcast message corresponding to the identification information, and the second Bluetooth audio device communicates with the The first Bluetooth audio device belongs to the same Bluetooth device set; or,

The second Bluetooth audio device monitors the Bluetooth link between the first Bluetooth audio device and the first target device, and calculates the identification information of the first target device based on the monitoring data.
The method of claim 1, wherein obtaining the identification information of the first target device based on the security management protocol between the first Bluetooth audio device and the first target device includes:

Based on the security management protocol between the first Bluetooth audio device and the first target device, receive the security management information sent by the first target device;

According to the security management information, the identification information of the first target device is determined.
The method according to claim 3, characterized in that, based on the security management protocol between the first Bluetooth audio device and the first target device, receiving the security management information sent by the first target device includes:

Configuring a security management protocol between the first Bluetooth audio device and the first target device through the Bluetooth link between the first Bluetooth audio device and the first target device;

Based on the security management protocol, receive security management information sent by the first target device.
The method according to claim 4, characterized in that the Bluetooth link is an asynchronous connectionless ACL type Bluetooth link.
The method of claim 3, wherein the identification information includes a device Bluetooth address, the security management information includes a Bluetooth device address resolution key IRK, and the first step is determined based on the security management information. Identification information of the target device, including:

The IRK is calculated according to the calculation rules corresponding to the IRK to generate the device Bluetooth address of the first target device.
The method according to any one of claims 1 to 6, characterized in that the first Bluetooth audio device is a device that supports the simultaneous establishment of a classic Bluetooth connection and a low-power Bluetooth audio connection;

Alternatively, the first Bluetooth audio device is a device that only supports establishing a low-power Bluetooth audio connection.
The method according to claim 7, characterized in that, in the case where the first Bluetooth audio device is a device that supports the simultaneous establishment of a classic Bluetooth connection and a low-power Bluetooth audio connection, the method based on the first Bluetooth Security management protocol between the audio device and the first target device, before obtaining the identification information of the first target device, the method further includes:

Entering the pairing state, the pairing state means that the first Bluetooth audio device is in a discoverable and connectable state;

Receive a classic Bluetooth connection request sent by the first target device, and in response to the classic Bluetooth connection request, establish a classic Bluetooth connection with the first target device;

Obtaining the identification information of the first target device based on the security management protocol between the first Bluetooth audio device and the first target device includes:

On the classic Bluetooth link with the first target device, the identification information of the first target device is obtained based on the security management protocol between the first Bluetooth audio device and the first target device.
The method according to claim 7, characterized in that when the first Bluetooth audio device is a device that only supports establishing a low-power Bluetooth audio connection, the method based on the first Bluetooth audio device and the third A security management protocol between target devices. Before obtaining the identification information of the first target device, the method further includes:

Establish a low-power Bluetooth connection with the first target device;

Obtaining the identification information of the first target device based on the security management protocol between the first Bluetooth audio device and the first target device includes:

On the low-power Bluetooth link with the first target device, obtain the identity of the first target device based on the security management protocol between the first Bluetooth audio device and the first target device. information.
The method according to claim 8, characterized in that before entering the pairing state, the method further includes:

Disconnect the Bluetooth connection with the second target device, the identification information of the second target device is different from the identification information of the first target device;

Wherein, when the second target device receives the Bluetooth low energy broadcast message corresponding to the identification information of the first target device sent by the first Bluetooth audio device, it does not respond to the Bluetooth low energy broadcast message. .
A device connection method, characterized in that it is applied to a second Bluetooth audio device, and the method includes:

Monitor the Bluetooth link between the first Bluetooth audio device and the first target device to obtain monitoring data, where the second Bluetooth audio device and the first Bluetooth audio device belong to the same Bluetooth device set;

According to the monitoring data, calculate the identification information of the first target device;

Send a low-power Bluetooth broadcast message corresponding to the identification information. The low-power Bluetooth broadcast message is used to indicate that the second Bluetooth audio device can respond to the low-power Bluetooth audio connection request initiated by the first target device. ;

Receive a low-power Bluetooth audio connection request sent by the first target device;

In response to the Bluetooth low energy audio connection request, a Bluetooth low energy audio connection is established with the first target device.
The method of claim 11, wherein the monitoring data includes security management information of the first target device, the security management information includes a Bluetooth device address resolution key IRK, and the identification information includes device Bluetooth The address, the identification information of the first target device calculated based on the listening data, includes:

The IRK is calculated according to the calculation rules corresponding to the IRK to generate the device Bluetooth address of the first target device.
A device connection method, characterized in that it is applied to a second Bluetooth audio device, and the method includes:

Receive the identification information of the first target device sent by the first Bluetooth audio device, wherein the second Bluetooth audio device and the first Bluetooth audio device belong to the same Bluetooth device set;

Send a low-power Bluetooth broadcast message corresponding to the identification information. The low-power Bluetooth broadcast message is used to indicate that the second Bluetooth audio device can respond to the low-power Bluetooth audio connection request initiated by the first target device. ;

Receive a low-power Bluetooth audio connection request sent by the first target device;

In response to the Bluetooth low energy audio connection request, a Bluetooth low energy audio connection is established with the first target device.
A device connection method, characterized in that it is applied to terminal equipment, and the method includes:

Based on the security management protocol between the first Bluetooth audio device and the terminal device, send security management information corresponding to the identification information of the terminal device to the first Bluetooth audio device;

Receive a first low-power Bluetooth broadcast message sent by the first Bluetooth audio device in response to the security management information;

When it is determined that the first Bluetooth low energy broadcast message corresponds to the identification information of the terminal device, in response to the first Bluetooth low energy broadcast message, send a low-power Bluetooth audio device to the first Bluetooth audio device. and a Bluetooth audio connection request, so that the first Bluetooth audio device responds to the Bluetooth low energy audio connection request and establishes a low-power Bluetooth audio connection with the terminal device.
The method according to claim 14, characterized in that, based on the security management protocol between the first Bluetooth audio device and the terminal device, the identification information of the terminal device is sent to the first Bluetooth audio device. Corresponding security management information includes:

Configuring a security management protocol between the first Bluetooth audio device and the terminal device through the Bluetooth link between the first Bluetooth audio device and the terminal device;

Based on the security management protocol, security management information corresponding to the identification information of the terminal device is sent to the first Bluetooth audio device, where the security management information is used to enable the first Bluetooth audio device to perform the security management according to the security management protocol. information, determine the identification information of the terminal device, and send the first low-power Bluetooth broadcast message corresponding to the identification information.
The method of claim 14, wherein the identification information includes a device Bluetooth address, and the receiving a first low-power Bluetooth broadcast message sent by the first Bluetooth audio device in response to the security management information, include:

Receive a first low-power Bluetooth broadcast message carrying a target Bluetooth address sent by the first Bluetooth audio device in response to the security management information;

When it is determined that the first Bluetooth low energy broadcast message corresponds to the identification information of the terminal device, in response to the first Bluetooth low energy broadcast message, send a low-power Bluetooth audio device to the first Bluetooth audio device. Power consumption Bluetooth audio connection request, including:

Calculate the security management information and the target Bluetooth address according to the calculation rules corresponding to the security management information to obtain a verification Bluetooth address;

The target Bluetooth address and the verification Bluetooth address are compared. If the target Bluetooth address matches the verification Bluetooth address, it is determined that the first low-power Bluetooth broadcast message is the same as the terminal device. corresponding to the Bluetooth address of the device, and in response to the first Bluetooth low energy broadcast message, sending a Bluetooth low energy audio connection request to the first Bluetooth audio device.
The method according to any one of claims 14 to 16, characterized in that, based on the security management protocol between the first Bluetooth audio device and the terminal device, sending the message to the first Bluetooth audio device and the Before obtaining the security management information corresponding to the identification information of the terminal device, the method further includes:

When it is determined that the first Bluetooth audio device is in a pairing state, send a classic Bluetooth connection request to the first Bluetooth audio device, where the pairing state means that the first Bluetooth audio device is in a discoverable and connectable state;

Establishing a classic Bluetooth connection with the first Bluetooth audio device responding to the classic Bluetooth connection request.
The method according to any one of claims 14 to 16, characterized in that the security management information is used to enable the first Bluetooth audio device to determine the identification information of the terminal device according to the security management information, And the first Bluetooth audio device sends the identification information of the terminal device to the second Bluetooth audio device, wherein the second Bluetooth audio device and the first Bluetooth audio device belong to the same Bluetooth device set; or, The second Bluetooth audio device monitors the Bluetooth link between the first Bluetooth audio device and the terminal device, and calculates the identification information of the terminal device based on the security management information obtained through monitoring;

Wherein, the identification information of the terminal device is used for the first Bluetooth audio device and/or the second Bluetooth audio device to send a low-power Bluetooth broadcast message corresponding to the identification information.
The method of claim 18, further comprising:

Receive a second low-power Bluetooth broadcast message sent by the second Bluetooth audio device;

Determine whether the first Bluetooth audio device and the second Bluetooth audio device belong to the same Bluetooth device set according to the second Bluetooth low energy broadcast message and the first Bluetooth low energy broadcast message;

When it is determined that the first Bluetooth audio device and the second Bluetooth audio device belong to the same Bluetooth device set, and the second low-power Bluetooth broadcast message corresponds to the identification information of the terminal device, in response to the The second low-power Bluetooth broadcast message sends a low-power Bluetooth audio connection request to the second Bluetooth audio device, so that the second Bluetooth audio device responds to the low-power Bluetooth audio connection request and communicates with the second low-power Bluetooth audio connection request. The above terminal device establishes a low-power Bluetooth audio connection.
A device connection device, characterized in that it is applied to a first Bluetooth audio device, and the device connection device includes:

An information acquisition unit configured to acquire identification information of the first target device based on the security management protocol between the first Bluetooth audio device and the first target device;

A first broadcast sending unit configured to send a low-power Bluetooth broadcast message corresponding to the identification information. The low-power Bluetooth broadcast message is used to indicate that the first Bluetooth audio device can respond to the first target device’s initiation. Bluetooth low energy audio connection request;

A first request receiving unit configured to receive a low-power Bluetooth audio connection request sent by the first target device;

A first connection unit configured to establish a low-power Bluetooth audio connection with the first target device in response to the low-power Bluetooth audio connection request.
The equipment connection device according to claim 20, characterized in that the equipment connection device further includes:

An information synchronization unit configured to send identification information of the first target device to a second Bluetooth audio device, so that the second Bluetooth audio device sends a low-power Bluetooth broadcast message corresponding to the identification information. The second Bluetooth audio device and the first Bluetooth audio device belong to the same Bluetooth device set; or,

The second Bluetooth audio device monitors the Bluetooth link between the first Bluetooth audio device and the first target device, and calculates the identification information of the first target device based on the monitoring data.
The device connection device according to claim 20, wherein the information acquisition unit is configured to acquire the first target device based on a security management protocol between the first Bluetooth audio device and the first target device. identification information, including:

Based on the security management protocol between the first Bluetooth audio device and the first target device, receive the security management information sent by the first target device;

According to the security management information, the identification information of the first target device is determined.
The device connection device according to claim 22, wherein the information acquisition unit is configured to receive the first target device based on a security management protocol between the first Bluetooth audio device and the first target device. The security management information sent includes:

Configuring a security management protocol between the first Bluetooth audio device and the first target device through the Bluetooth link between the first Bluetooth audio device and the first target device;

Based on the security management protocol, receive security management information sent by the first target device.
The device connection device according to claim 23, wherein the Bluetooth link is an asynchronous connectionless ACL type Bluetooth link.
The device connection device according to claim 22, wherein the identification information includes a device Bluetooth address, the security management information includes a Bluetooth device address resolution key IRK, and the information acquisition unit is used to obtain the device according to the security Management information, when determining the identification information of the first target device, includes:

The IRK is calculated according to the calculation rules corresponding to the IRK to generate the device Bluetooth address of the first target device.
The device connection device according to any one of claims 20 to 25, wherein the first Bluetooth audio device is a device that supports the simultaneous establishment of a classic Bluetooth connection and a low-power Bluetooth audio connection;

Alternatively, the first Bluetooth audio device is a device that only supports establishing a low-power Bluetooth audio connection.
The device connection device according to claim 26, wherein when the first Bluetooth audio device is a device that supports the simultaneous establishment of a classic Bluetooth connection and a low-power Bluetooth audio connection, the device connection device further includes :

A pairing unit configured to enter a pairing state before the information acquisition unit acquires the identification information of the first target device based on the security management protocol between the first Bluetooth audio device and the first target device. The state means that the first Bluetooth audio device is in a discoverable and connectable state;

The first request receiving unit is also used to receive a classic Bluetooth connection request sent by the first target device;

The first connection unit is also configured to respond to the classic Bluetooth connection request and establish a classic Bluetooth connection with the first target device;

The information acquisition unit is also configured to obtain the information based on the security management protocol between the first Bluetooth audio device and the first target device on the classic Bluetooth link with the first target device. The identification information of the first target device.
The device connection device according to claim 26, wherein when the first Bluetooth audio device is a device that only supports establishing a low-power Bluetooth audio connection, the first connection unit is also used to: The information acquisition unit establishes a low-power Bluetooth connection with the first target device before acquiring the identification information of the first target device based on the security management protocol between the first Bluetooth audio device and the first target device. ;

The information acquisition unit is also configured to, on the low-power Bluetooth link with the first target device, based on the security management protocol between the first Bluetooth audio device and the first target device, Obtain the identification information of the first target device.
The device connection device according to claim 27, wherein the first connection unit is further configured to disconnect the Bluetooth connection from the second target device before the pairing unit enters the pairing state, and the second target device The identification information of the device is different from the identification information of the first target device;

Wherein, when the second target device receives the Bluetooth low energy broadcast message corresponding to the identification information of the first target device sent by the first Bluetooth audio device, it does not respond to the Bluetooth low energy broadcast message. .
A device connection device, characterized in that it is applied to a second Bluetooth audio device, and the device connection device includes:

A monitoring unit configured to monitor the Bluetooth link between the first Bluetooth audio device and the first target device and obtain monitoring data, wherein the second Bluetooth audio device and the first Bluetooth audio device belong to the same Bluetooth device. gather;

A computing unit configured to calculate identification information of the first target device according to the monitoring data;

A second broadcast sending unit, configured to send a low-power Bluetooth broadcast message corresponding to the identification information, where the low-power Bluetooth broadcast message is used to instruct the second Bluetooth audio device to respond to a call initiated by the first target device. Bluetooth low energy audio connection request;

A second request receiving unit, configured to receive a low-power Bluetooth audio connection request sent by the first target device;

The second connection unit is configured to establish a low-power Bluetooth audio connection with the first target device in response to the low-power Bluetooth audio connection request.
The device connection device according to claim 30, wherein the monitoring data includes security management information of the first target device, the security management information includes a Bluetooth device address resolution key IRK, and the identification information includes Device Bluetooth address. When the calculation unit is used to calculate the identification information of the first target device based on the monitoring data, it includes:

The IRK is calculated according to the calculation rules corresponding to the IRK to generate the device Bluetooth address of the first target device.
A device connection device, characterized in that it is applied to a second Bluetooth audio device, and the device connection device includes:

An information receiving unit configured to receive the identification information of the first target device sent by the first Bluetooth audio device, wherein the second Bluetooth audio device and the first Bluetooth audio device belong to the same Bluetooth device set;

A third broadcast sending unit, configured to send a low-power Bluetooth broadcast message corresponding to the identification information, where the low-power Bluetooth broadcast message is used to instruct the second Bluetooth audio device to respond to a call initiated by the first target device. Bluetooth low energy audio connection request;

A third request receiving unit configured to receive a low-power Bluetooth audio connection request sent by the first target device;

The third connection unit is configured to establish a low-power Bluetooth audio connection with the first target device in response to the low-power Bluetooth audio connection request.
An equipment connection device, characterized in that it is applied to terminal equipment, and the equipment connection device includes:

An information sending unit configured to send security management information corresponding to the identification information of the terminal device to the first Bluetooth audio device based on the security management protocol between the first Bluetooth audio device and the terminal device;

A broadcast receiving unit configured to receive a low-power Bluetooth broadcast message sent by the first Bluetooth audio device in response to the security management information;

A request sending unit, configured to respond to the Bluetooth low energy broadcast message and send a low-power Bluetooth audio device to the first Bluetooth audio device when it is determined that the low-power Bluetooth broadcast message corresponds to the identification information of the terminal device. and a power consumption Bluetooth audio connection request, so that the first Bluetooth audio device responds to the low power Bluetooth audio connection request and establishes a low power Bluetooth audio connection with the terminal device.
The device connection device according to claim 33, wherein the information sending unit is configured to send a message to the first Bluetooth audio device based on a security management protocol between the first Bluetooth audio device and the terminal device. The security management information corresponding to the identification information of the terminal device includes:

Configuring a security management protocol between the first Bluetooth audio device and the terminal device through the Bluetooth link between the first Bluetooth audio device and the terminal device;

Based on the security management protocol, security management information corresponding to the identification information of the terminal device is sent to the first Bluetooth audio device, and the security management information is used to enable the first Bluetooth audio device to perform the security management according to the security management protocol. information, determine the identification information of the terminal device, and send the first low-power Bluetooth broadcast message corresponding to the identification information.
The device connection device according to claim 33, wherein the identification information includes a device Bluetooth address, and the broadcast receiving unit is configured to receive the first Bluetooth audio device sent in response to the security management information. A Bluetooth Low Energy broadcast message includes:

Receive a first low-power Bluetooth broadcast message carrying a target Bluetooth address sent by the first Bluetooth audio device in response to the security management information;

The request sending unit is also configured to calculate the security management information and the target Bluetooth address according to the calculation rules corresponding to the security management information to obtain a verification Bluetooth address; and,

The target Bluetooth address and the verification Bluetooth address are compared. If the target Bluetooth address matches the verification Bluetooth address, it is determined that the first low-power Bluetooth broadcast message is the same as the terminal device. corresponding to the Bluetooth address of the device, and in response to the first Bluetooth low energy broadcast message, sending a Bluetooth low energy audio connection request to the first Bluetooth audio device.
The device connection device according to any one of claims 33 to 35, wherein the request sending unit is further configured to perform the information sending unit based on the security between the first Bluetooth audio device and the terminal device. Management protocol: before sending the security management information corresponding to the identification information of the terminal device to the first Bluetooth audio device, when it is determined that the first Bluetooth audio device is in a pairing state, sending the security management information to the first Bluetooth audio device. Classic Bluetooth connection request, the pairing state means that the first Bluetooth audio device is in a discoverable and connectable state;

The equipment connection device also includes:

A connection unit configured to establish a classic Bluetooth connection with the first Bluetooth audio device that responds to the classic Bluetooth connection request.
The device connection device according to any one of claims 33 to 35, wherein the security management information is used to enable the first Bluetooth audio device to determine the identity of the terminal device according to the security management information. information, and the first Bluetooth audio device sends the identification information of the terminal device to a second Bluetooth audio device, wherein the second Bluetooth audio device and the first Bluetooth audio device belong to the same Bluetooth device set; or , the second Bluetooth audio device monitors the Bluetooth link between the first Bluetooth audio device and the terminal device, and calculates the identification information of the terminal device based on the security management information obtained by monitoring;

Wherein, the identification information of the terminal device is used for the first Bluetooth audio device and/or the second Bluetooth audio device to send a low-power Bluetooth broadcast message corresponding to the identification information.
The device connection device according to claim 37, wherein the broadcast receiving unit is further configured to receive a second low-power Bluetooth broadcast message sent by the second Bluetooth audio device;

The equipment connection device also includes:

A determination unit configured to determine whether the first Bluetooth audio device and the second Bluetooth audio device belong to the same Bluetooth device set according to the second Bluetooth low energy broadcast message and the first Bluetooth low energy broadcast message. ;

The request sending unit is also configured to determine that the first Bluetooth audio device and the second Bluetooth audio device belong to the same Bluetooth device set, and the second low-power Bluetooth broadcast message and the identification of the terminal device If the information corresponds to the second Bluetooth low energy broadcast message, send a low-power Bluetooth audio connection request to the second Bluetooth audio device, so that the second Bluetooth audio device responds to the low-power Bluetooth audio device. Power consumption Bluetooth audio connection request to establish a low-power Bluetooth audio connection with the terminal device.
A Bluetooth audio device, characterized in that the Bluetooth audio device includes a memory and a processor, and a computer program is stored in the memory. When the computer program is executed by the processor, the processor implements the following steps: The device connection method according to any one of claims 1 to 10, or the device connection method according to any one of claims 11 to 13.
A terminal device, characterized in that the terminal device includes a memory and a processor, a computer program is stored in the memory, and when the computer program is executed by the processor, the processor implements the method of claim 14 to the device connection method described in any one of 19.
A computer-readable storage medium with a computer program stored thereon, characterized in that when the computer program is executed by a processor, the device connection method as claimed in any one of claims 1 to 10 is implemented, or as claimed in claim 11 The device connection method according to any one of claims 14 to 13, or the device connection method according to any one of claims 14 to 19.
A chip, including a processor, characterized in that the processor is configured to read and execute a computer program stored in a memory to execute the device connection method as claimed in any one of claims 1 to 10, or as claimed in claim 1 The device connection method according to any one of claims 11 to 13, or the device connection method according to any one of claims 14 to 19.