CN114679918A

CN114679918A - Method for establishing broadcast synchronization, electronic equipment and storage medium

Info

Publication number: CN114679918A
Application number: CN202080077892.9A
Authority: CN
Inventors: 董建利; 茹昭
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2022-06-28
Also published as: WO2022087794A1

Abstract

The application discloses a method for establishing broadcast synchronization, which comprises the following steps: if the receiving equipment loses the broadcast synchronization, the receiving equipment sends a first request message, and the first request message is used for requesting to acquire the broadcast synchronization information. The application also discloses another method for establishing broadcast synchronization, a first device and a storage medium.

Description

Method for establishing broadcast synchronization, electronic equipment and storage medium

Technical Field

The present application relates to the field of wireless communications technologies, and in particular, to a method, an electronic device, and a storage medium for establishing broadcast synchronization.

Background

In short-distance communication such as Bluetooth and the like, broadcast synchronization is established between a sending device and a receiving device, so that the receiving device can play multimedia streams of the sending device. In short-distance communication, there may also be a case where the transmitting device and the receiving device lose broadcast synchronization after establishing broadcast synchronization; there is no clear solution for this situation on how the sending device and the receiving device establish the broadcast synchronization again.

Disclosure of Invention

The embodiment of the application provides a method for establishing broadcast synchronization, electronic equipment and a storage medium, which make clear the process of establishing broadcast synchronization again by a sending device and a receiving device under the condition that the broadcast synchronization is lost after the broadcast synchronization is established by the sending device and the receiving device.

In a first aspect, an embodiment of the present application provides a method for establishing broadcast synchronization, including: if the receiving equipment loses the broadcast synchronization, the receiving equipment sends a first request message, and the first request message is used for requesting to acquire the broadcast synchronization information.

In a second aspect, an embodiment of the present application provides a method for establishing broadcast synchronization, including: the first device receives a first request message, wherein the first request message is used for requesting the receiving device to acquire the broadcast synchronization information.

In a third aspect, an embodiment of the present application provides a receiving device, where the receiving device includes:

a first sending unit, configured to send a first request message if the receiving device loses broadcast synchronization, where the first request message is used to request to acquire broadcast synchronization information.

In a fourth aspect, an embodiment of the present application provides a first device, where the first device includes:

the second receiving unit is configured to receive a first request message, where the first request message is used for requesting, by a receiving device, to acquire broadcast synchronization information.

In a fifth aspect, embodiments of the present application provide a receiving device, including a processor and a memory for storing a computer program capable of running on the processor, wherein the processor is configured to execute the steps of the method for establishing broadcast synchronization, the method being performed by the receiving device when the computer program is run.

In a sixth aspect, embodiments of the present application provide a first device, including a processor and a memory for storing a computer program capable of running on the processor, wherein the processor is configured to execute the steps of the method for establishing broadcast synchronization, the method being performed by the first device when the computer program is run.

In a seventh aspect, an embodiment of the present application provides a chip, including: and the processor is used for calling and running the computer program from the memory so that the equipment provided with the chip executes the method for establishing the broadcast synchronization.

In an eighth aspect, an embodiment of the present application provides a storage medium, which stores an executable program, and when the executable program is executed by a processor, the storage medium implements the method for establishing broadcast synchronization.

In a ninth aspect, the present application provides a computer program product, which includes computer program instructions, and the computer program instructions make a computer execute the above method for establishing broadcast synchronization.

In a tenth aspect, an embodiment of the present application provides a computer program, where the computer program enables a computer to execute the above method for establishing broadcast synchronization.

The method, the electronic device and the storage medium for establishing broadcast synchronization provided by the embodiment of the application comprise the following steps: if the receiving equipment loses the broadcast synchronization, the receiving equipment sends a first request message, and the first request message is used for requesting to acquire the broadcast synchronization information. In this way, when the receiving device loses the broadcast synchronization, the receiving device sends the first request message to acquire the broadcast synchronization information, so that the receiving device recovers the broadcast synchronization.

Drawings

FIG. 1 is a schematic flow chart of a process for establishing broadcast synchronization according to the present application;

FIG. 2 is a schematic view of another process flow for establishing broadcast synchronization according to the present application;

fig. 3 is a schematic processing flow diagram of an alternative method for establishing broadcast synchronization applied to a receiving device according to an embodiment of the present application;

fig. 4 is a schematic processing flow diagram of an alternative method for establishing broadcast synchronization applied to a first device according to an embodiment of the present application;

fig. 5 is a schematic view illustrating an alternative detailed processing flow of a method for establishing broadcast synchronization according to an embodiment of the present application;

fig. 6 is a schematic view illustrating another alternative detailed processing flow of a method for establishing broadcast synchronization according to an embodiment of the present application;

fig. 7 is a schematic view illustrating a flow of another alternative detailed process of a method for establishing broadcast synchronization according to an embodiment of the present application;

FIG. 8 is a schematic view of yet another alternative detailed process flow for a method of establishing broadcast synchronization according to an embodiment of the present application;

fig. 9 is a schematic diagram of an alternative structure of a transmitting device according to an embodiment of the present application;

FIG. 10 is a schematic diagram of an alternative structure of a first apparatus according to an embodiment of the present disclosure;

fig. 11 is a schematic diagram of a hardware component structure of an electronic device according to an embodiment of the present application.

Detailed Description

So that the manner in which the features and elements of the present embodiments can be understood in detail, a more particular description of the embodiments, briefly summarized above, may be had by reference to embodiments, some of which are illustrated in the appended drawings.

Before the embodiments of the present application are explained, the related contents will be briefly explained.

First, terms referred to in the embodiments of the present application will be described.

A Broadcast audio Source (Broadcast Source) for generating one or more multimedia streams.

The Broadcast audio receiver (Broadcast Sink) is configured to receive a multimedia stream played by a Broadcast Source in a bluetooth communication manner, and play the multimedia stream.

The Broadcast Assistant (Broadcast Assistant) is used for assisting the Broadcast Source and the Broadcast Sink to establish Broadcast synchronization.

Fig. 1 shows a processing flow diagram of Broadcast synchronization established by Broadcast Source and Broadcast Sink, which is cooperatively implemented by Broadcast Source, Broadcast Sink and Broadcast Source. Broadcast synchronization between the Broadcast Sink and the Broadcast Source through scanning is an operation which consumes relatively much power; therefore, in some scenarios, the broadcase Sink allows broadcase asset to perform scanning detection of broadcase Source instead of broadcase Sink. After detecting the Broadcast, the Broadcast station directly sends the Broadcast synchronization information of the Broadcast Source to the Broadcast Sink through Low Energy, LE, Connection, and after receiving the Broadcast synchronization information, the Broadcast Sink directly establishes Broadcast synchronization with the Broadcast Source to achieve the purpose of saving power.

Another schematic processing flow diagram for establishing Broadcast synchronization between the Broadcast Source and the Broadcast Sink, as shown in fig. 2, where the Broadcast Source and the Broadcast Sink are located on the same device, or the Broadcast Source function and the Broadcast Sink function are implemented on the same device; the same equipment can be Broadcast Source or other equipment.

Existing bluetooth audio technology standards define bluetooth functions including: the novel audio codec with higher quality and higher efficiency has the capability of synchronously transmitting a plurality of audio streams, and the novel Bluetooth audio broadcasting function and the capability of transmitting audio by low-power Bluetooth. The bluetooth audio technology standard also defines a series of profiles (Profile) and services (Service); each Service is responsible for different functions, such as Basic Audio Profile (BAP) and Broadcast Audio Scan Service (BASS). However, the applicant finds that, in the prior art, how the Broadcast synchronization is restored by the Broadcast Source and the Broadcast Sink is not clear in the case that the Broadcast synchronization is lost after the Broadcast synchronization is established.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a global system for mobile communications (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet Radio Service (GPRS), a long term evolution (long term evolution, LTE) system, a LTE frequency division duplex (frequency division duplex, FDD) system, a LTE time division duplex (time division duplex, TDD) system, an advanced long term evolution (advanced long term evolution, LTE-a) system, a new radio (new NR) system, an LTE system of an NR system, an LTE (long term evolution-unlicensed-universal-radio, LTE-unlicensed-universal-radio, an NR system of an unlicensed band, an LTE (non-licensed-universal-radio, NR) system of an unlicensed band, an NR system of a mobile-radio (unlicensed-universal-radio, LTE-unlicensed-universal-radio, NR) system of an unlicensed band, an NR system of a mobile-radio (unlicensed band, an NR) system of an unlicensed band, an NR system of a mobile-unlicensed band, an NR system of an unlicensed band, an unlicensed band-universal-radio, an NR system of a radio-unlicensed band, an NR system of a mobile-radio system, UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, Wireless Local Area Network (WLAN), wireless fidelity (WiFi), next generation communication system, or other communication system.

The system architecture and the service scenario described in the embodiment of the present application are for more clearly illustrating the technical solution of the embodiment of the present application, and do not form a limitation on the technical solution provided in the embodiment of the present application, and it can be known by a person of ordinary skill in the art that the technical solution provided in the embodiment of the present application is also applicable to similar technical problems with the evolution of the network architecture and the occurrence of a new service scenario.

As shown in fig. 3, an optional processing flow of the method for establishing broadcast synchronization applied to a receiving device according to the embodiment of the present application may include the following steps:

step S201, if the receiving device loses the broadcast synchronization, the receiving device sends a first request message, where the first request message is used to request to acquire broadcast synchronization information.

In some embodiments, the first request message may include at least one or more of: the Address Type (Source _ Address _ Type) of the target sending equipment, the Address (Source _ Address) of the target sending equipment and an advertisement Set (advertisement) _ identification (Set Identifier, SID); the Source _ Address _ Type and the Source _ Address are used for identifying the target sending device, and the updating _ SID is used for identifying one broadcast in at least one broadcast instance of the target sending device.

In some embodiments, the receiving device may be a broadcast audio receiver as shown in fig. 1 or as shown in fig. 2; the receiving device may be in the form of a bluetooth headset, a bluetooth speaker, or the like.

In some embodiments, the loss of broadcast synchronization by the receiving device may be a loss of broadcast synchronization by the receiving device with the target transmitting device. The target transmitting device may be a broadcast audio source as shown in fig. 1 or as shown in fig. 2; the target sending device can be a media player such as an MP3, and can also be other types of media players; the broadcast played by the media player may be an audio stream or a video stream. Under the condition that the target sending equipment and the receiving equipment establish broadcast synchronization, the receiving equipment can synchronize the multimedia stream played by the broadcast target sending equipment. In some scenarios, the receiving device may lose the synchronized broadcast due to signal interference, a distance from the target transmitting device becoming longer, an address of the target transmitting device being updated, and the like, that is, the receiving device cannot synchronously broadcast the multimedia stream of the target transmitting device.

In some embodiments, in a scenario where the receiving device loses broadcast synchronization with the target transmitting device, the receiving device requests to acquire broadcast synchronization information by transmitting a first request message. The broadcast synchronization information is used for synchronizing the broadcast of the receiving device and the target transmitting device, that is, the broadcast synchronization information is used for enabling the receiving device to synchronize the multimedia stream of the broadcast target transmitting device.

In some embodiments, the receiving device may send the first request message to an auxiliary device, which may be a broadcast assistant as shown in fig. 1, or other device capable of assisting the receiving device to establish broadcast synchronization with the target sending device.

In other embodiments, the receiving device may transmit the first request message to the transmitting device, which may be a broadcast audio source as shown in fig. 2.

In some optional embodiments, the method may further comprise:

step S200, a receiving device sends a first notification message, where the first notification message is used to notify the receiving device that broadcast synchronization has been lost.

In some embodiments, the receiving device may send the first notification message to an auxiliary device, which may be a broadcast assistant as shown in fig. 1, or other device capable of assisting the receiving device to establish broadcast synchronization with the target sending device.

In still other embodiments, the receiving device may transmit the first notification message to the sending device, which may be a broadcast audio source as shown in fig. 2.

In some embodiments, if the communication connection between the receiving device and the target transmitting device or the auxiliary device is disconnected, the method may further include:

step S200', a receiving device sends a second request message, where the second request message is used to request to establish a connection with a first device, and the first device is used to send broadcast synchronization information to the receiving device.

In some embodiments, the second request message comprises at least: a Universally Unique Identifier (UUID) of a Broadcast Audio Scan Service (Broadcast Audio Scan Service). The second request message may be carried in an extended advertisement (extended advertisement) Protocol Data Unit (PDU) including a Broadcast Audio Scan Service UUID.

In some embodiments, the receiving device may send the second request message to an auxiliary device, which may be a broadcast assistant as shown in fig. 1, or other device capable of assisting the receiving device to establish broadcast synchronization with the target sending device.

In other embodiments, the receiving device may send the second request message to the sending device, which may be a broadcast audio source as shown in fig. 2.

In some embodiments, the method may further comprise:

step S202, the receiving device receives the broadcast synchronization information.

In some embodiments, the broadcast synchronization information may be transmitted by a target transmitting device to a receiving device; each broadcast synchronization information corresponds to an advertisement set identification.

In other embodiments, the broadcast synchronization information may also be sent to the auxiliary device by the target sending device, and then sent to the receiving device by the auxiliary device; each broadcast synchronization information corresponds to an advertisement set identification.

Step S203, the receiving device establishes broadcast synchronization with the target transmitting device based on the broadcast synchronization information.

In some embodiments, the receiving device establishes broadcast synchronization with the target transmitting device based on the broadcast synchronization information, which may be that the receiving device synchronously plays the multimedia stream played by the target transmitting device. In a specific implementation, the receiving device may play the multimedia stream based on the broadcast synchronization information, or the receiving device may play the multimedia stream corresponding to the broadcast synchronization information. The receiving device establishes broadcast synchronization with the target transmitting device, and may also be understood as restoring broadcast synchronization with the target transmitting device.

As shown in fig. 4, an optional processing flow of the method for establishing broadcast synchronization applied to the first device according to the embodiment of the present application may include the following steps:

step S301, a first device receives a first request message, where the first request message is used for requesting, by a receiving device, to acquire broadcast synchronization information.

In some embodiments, the first request message may include at least one or more of: source _ Address _ Type, Source _ Address and updating _ SID; the Source _ Address _ Type and the Source _ Address are used for identifying the target sending device, and the updating _ SID is used for identifying one broadcast in at least one broadcast instance of the target sending device.

In some embodiments, the first device may be an auxiliary device, which may be a broadcast assistant as shown in fig. 1, or other device capable of assisting a receiving device to establish broadcast synchronization with a target transmitting device.

In other embodiments, the first device may be a first transmitting device, which may be a broadcast audio source as shown in fig. 2.

In some embodiments, the method may further comprise:

step S300, a first device receives a first notification message, where the first notification message is used to notify the receiving device that broadcast synchronization has been lost.

In some embodiments, the first notification message may be sent by the receiving device.

In some embodiments, the first device may be an auxiliary device, which may be a broadcast assistant as shown in fig. 1, or other device capable of assisting the receiving device to establish broadcast synchronization with the target transmitting device.

In some embodiments, the method may further comprise:

step S300', the first device receives a second request message, where the second request message is used to request to establish a connection with the first device.

In some embodiments, the second request message comprises at least: broadcast Audio Scan Service UUID. The second request message may be carried in an extended access PDU including a Broadcast Audio Scan Service UUID.

In other embodiments, the receiving device may be a first transmitting device, which may be a broadcast audio source as shown in fig. 2.

In some embodiments, the method may further comprise:

step S302, the first device confirms, based on the first request message, a target sending device corresponding to the broadcast synchronization information.

In some embodiments, the first device may be the aforementioned auxiliary device or the first sending device, and a process of the first device confirming the target sending device corresponding to the broadcast synchronization information based on the first request message will be described below with respect to a case where the first device is an auxiliary device and the first device is a first sending device, respectively.

For scenario one in which the first device is an auxiliary device: the auxiliary device may be a broadcast assistant as shown in fig. 1; if the Source _ Address _ Type carried in the first request message is a fixed Address, the auxiliary device may confirm the target sending device corresponding to the broadcast synchronization information according to the Source _ Address carried in the first request message. In some embodiments, the secondary device establishes synchronization with the target transmitting device if the secondary device is not synchronized with the target transmitting device.

For scenario two, in which the first device is an auxiliary device: the auxiliary device may be a broadcast assistant as shown in fig. 1; if the Source _ Address _ Type carried in the first request message is a Resolvable Private Address (RPA), the auxiliary device determines the target sending device based on an Identity Resolution Key (IRK) stored in the auxiliary device. In specific implementation, the auxiliary device traverses the IRK stored by the auxiliary device itself, and analyzes the Source _ Address carried in the first request message by using the IRK to determine a target IRK for analyzing the Address of the target sending device; determining the target sending device based on the target IRK. If the auxiliary equipment traverses the IRK stored by the auxiliary equipment, and cannot determine a target IRK used for analyzing the Source _ Address carried in the first request message, the auxiliary equipment displays prompt information on a display interface of the auxiliary equipment; the prompt message is used for requesting a user to determine the target sending equipment.

For scenarios one and two in which the first device is an auxiliary device, in some embodiments, if the auxiliary device and the target transmission device do not maintain synchronization, the auxiliary device needs to establish synchronization with the target transmission device.

For scenario one in which the first device is a first sending device: if the Source _ Address _ Type carried in the first request message is a fixed Address, the first sending device may determine whether the Source _ Address carried in the first request message is consistent with the Source _ Address of the first sending device. If the Source _ Address carried in the first request message is consistent with the Source _ Address of the first sending device, the first sending device determines that the first sending device is a target sending device corresponding to the broadcast synchronization information requested to be acquired by the receiving device; and the first sending equipment determines a broadcast instance matched with the Advertising _ SID in at least one broadcast instance of the first sending equipment according to the Advertising _ SID carried in the first request message, and determines the broadcast synchronization information of the broadcast instance. If the Source _ Address carried in the first request message is not consistent with the Source _ Address of the first sending device, the first sending device determines that the first sending device is not the target sending device corresponding to the broadcast synchronization information requested to be acquired by the receiving device.

For scenario two, in which the first device is the first sending device: and if the Source _ Address _ Type carried in the first request message is RPA, the first sending device determines the target sending device based on the IRK of the first sending device. In specific implementation, the first sending device analyzes the Source _ Address carried in the first request message by using the IRK of the first sending device, and if the analysis is successful, the first sending device determines that the first sending device is the target sending device; and if the analysis is unsuccessful, the first sending equipment determines that the first sending equipment is not the target sending equipment.

In some embodiments, after the first device determines the target sending device, the method may further include:

step S303, the first device determines broadcast synchronization information corresponding to the advertisement set identifier carried in the first request message.

In some embodiments, the first device determines, according to the Advertising _ SID carried in the first request message, a broadcast instance matched with the Advertising _ SID in at least one broadcast instance of the target sending device and broadcast synchronization information corresponding to the broadcast instance.

In some embodiments, there may be multiple broadcast instances for the target sending device, where each broadcast instance corresponds to an Advertising _ SID; the first device determines a broadcast instance corresponding to the Advertising _ SID and broadcast synchronization information of the broadcast instance in a plurality of broadcast instances of the target sending device.

Step S304, the first device sends the broadcast synchronization information to the receiving device.

In some embodiments, the broadcast synchronization information is sent to the receiving device by the first device, so that the broadcast synchronization between the receiving device and the first device is realized; i.e. the receiving device can play the audio stream played by the target sending device synchronously.

The method for establishing broadcast synchronization provided by the embodiments of the present application is described in detail below with respect to different scenarios.

Aiming at the fact that the Type of Source _ Address _ Type is a fixed Address, the receiving equipment is a Broadcast Audio receiver, the first equipment is a Broadcast assistant, the equipment for generating the multimedia Stream is a Broadcast Audio Source, the Broadcast Audio receiver establishes a synchronization relationship (Broadcast Audio streaming) with the Broadcast Audio Source under the assistance of the Broadcast assistant, and the Broadcast Audio receiver synchronously plays the multimedia Stream (such as music) of the Broadcast Audio Source; however, in a scenario where broadcast synchronization is lost due to signal interference or too far physical distance between the broadcast audio receiver and the broadcast audio source, an optional detailed process flow of the method for establishing broadcast synchronization provided by the embodiment of the present application, as shown in fig. 5, may include the following steps:

in step S401, if the Broadcast Audio receiver determines that the Low power consumption (LE) connection between the Broadcast Audio receiver and the Broadcast assistant is disconnected, the Broadcast Audio receiver sends a request message (Solicitation Requests) to the Broadcast assistant, where the Solicitation Requests may be an extended advertisement PDU including a Broadcast Audio Scan Service UUID. The broadcast assistant scans Solicitation Requests and initiates an LE connection with the broadcast audio receiver.

In some embodiments, step S401 is not performed if the LE connection between the broadcast audio receiver and the broadcast assistant is not disconnected.

In step S402, the broadcast audio receiver sends a first notification message (notification) to the broadcast assistant, the first notification message being used to notify the broadcast assistant that the broadcast audio receiver has lost broadcast synchronization or that the broadcast audio receiver has stopped synchronizing to periodic broadcast.

In step S403, the broadcast audio receiver sends a first request message, where the first request message is used to request broadcast synchronization information to be sent from the broadcast assistant.

In some embodiments, the first request message carries at least one or more of the following: source _ Address _ Type, Source _ Address, and Address _ SID.

Step S404, the broadcast assistant determines a broadcast audio Source according to the Source _ Address _ Type and Source _ Address.

In step S405, if the broadcast assistant is not synchronized with the broadcast audio receiver, the broadcast audio source initiates a scan and establishes synchronization with the broadcast audio receiver.

In some embodiments, if the broadcast assistant and the broadcast audio receiver remain synchronized, step S405 need not be performed.

Step S406, the broadcast assistant determines the broadcast synchronization information according to the adapting _ SID, and sends the broadcast synchronization information to the broadcast audio receiver.

In step S407, the broadcast audio receiver synchronously plays the broadcast of the broadcast audio source according to the broadcast synchronization information.

In some embodiments, the broadcast audio receiver synchronizes the broadcast synchronization information to its BIS to synchronize the broadcast of the broadcast audio source.

Aiming at the fact that the Source _ Address _ Type is a fixed Address, the receiving device is a Broadcast Audio receiver, the first device is a first Broadcast Audio Source or integrates the functions of the first Broadcast Audio Source and a Broadcast assistant (which are collectively called as the first Broadcast Audio Source in the embodiment of the application), the device for generating the multimedia Stream is a target Broadcast Audio Source, the Broadcast Audio receiver and the target Broadcast Audio Source establish Broadcast Audio streaming synchronization, and the Broadcast Audio receiver synchronously plays the multimedia Stream (such as music) of the Broadcast Audio Source; however, in a scenario where broadcast synchronization is lost due to signal interference or too long physical distance between the broadcast audio receiver and the broadcast audio source, another optional detailed process flow of the method for establishing broadcast synchronization provided in the embodiment of the present application, as shown in fig. 6, may include the following steps:

step S501, if the Broadcast Audio receiver confirms that the LE connection between the Broadcast Audio receiver and the first Broadcast Audio source is disconnected, the Broadcast Audio receiver sends a request message (Solicitation Requests) to the first Broadcast Audio source, wherein the Solicitation Requests may be an extended advertisement PDU including a Broadcast Audio Scan Service UUID. The first broadcast audio source scans for Solicitation Requests and initiates an LE connection with the broadcast audio receiver.

In some embodiments, step S501 is not performed if the LE connection between the broadcast audio receiver and the first broadcast audio source is not disconnected.

In step S502, the broadcast audio receiver sends a first notification message (notification) to the first broadcast audio source, where the first notification message is used to notify the first broadcast audio source that the broadcast audio receiver has lost broadcast synchronization or that the broadcast audio receiver has stopped synchronizing to periodic broadcast.

In step S503, the broadcast audio receiver transmits a first request message for requesting transmission of broadcast synchronization information from a first broadcast audio source.

Step S504, the first broadcast audio Source compares Source _ Address _ Type and Source _ Address, and determines whether the Source _ Address _ Type and the Source _ Address are the same as each other.

If the Source _ Address _ Type of the first broadcast audio Source is consistent with the Source _ Address _ Type in the first request message, and the Source _ Address of the first broadcast audio Source is the same as the Source _ Address in the first request message, step S505 is executed.

In step S505, the first broadcast audio source determines that the first broadcast audio source is the target broadcast audio source.

Step S506, the first broadcast audio source determines broadcast synchronization information according to the adapting _ SID, and sends the broadcast synchronization information to the broadcast audio receiver.

In step S507, the broadcast audio receiver synchronously plays the broadcast of the broadcast audio source according to the broadcast synchronization information.

Aiming at that the Type of Source _ Address _ Type is RPA, the receiving device is a Broadcast Audio receiver, the first device is a Broadcast assistant, the device for generating the multimedia Stream is a Broadcast Audio Source, the Broadcast Audio receiver establishes a synchronization relationship (Broadcast Audio Stream synchronization) with the Broadcast Audio Source under the assistance of the Broadcast assistant, and the Broadcast Audio receiver synchronously plays the multimedia Stream (such as music) of the Broadcast Audio Source; however, due to a scenario that broadcast synchronization is lost due to signal interference or too long physical distance between the broadcast audio receiver and the broadcast audio source, and the RPA of the broadcast audio source is updated after the broadcast synchronization is lost, as shown in fig. 7, another optional detailed processing flow of the method for establishing broadcast synchronization provided by the embodiment of the present application may include the following steps:

step S601, if the Broadcast Audio receiver confirms that LE connection between the Broadcast Audio receiver and the Broadcast assistant is disconnected, the Broadcast Audio receiver sends Solicitation Requests to the Broadcast assistant, and the Solicitation Requests can be extended advertisement PDU including Broadcast Audio Scan Service UUID. The broadcast assistant scans Solicitation Requests and initiates an LE connection with the broadcast audio receiver.

In some embodiments, if the LE connection between the broadcast audio receiver and the broadcast assistant is not disconnected, step S601 is not performed.

In step S602, the broadcast audio receiver sends a first notification message (notification) to the broadcast assistant, where the first notification message is used to notify the broadcast assistant that the broadcast audio receiver has lost broadcast synchronization or that the broadcast audio receiver has stopped synchronizing to a periodic broadcast.

Step S603, the broadcast audio receiver sends a first request message, where the first request message is used to request that broadcast synchronization information be sent from the broadcast assistant.

In step S604, the broadcast assistant determines, according to Source _ Address _ Type, that the target broadcast audio Source requesting synchronization is an RPA Address Type.

Step S605, the broadcast assistant traverses the IRK stored in itself, and analyzes the Source _ Address carried in the first request message by using the IRK, where the IRK that can successfully analyze the Source _ Address is referred to as a matched IRK and may also be referred to as a target IRK.

Step S606, the broadcast assistant determines the target broadcast audio source based on the target IRK.

In some embodiments, the broadcast assistant can determine a target broadcast audio source from the target IRK; after determining the target broadcast audio source, the broadcast assistant determines a matched broadcast instance in a plurality of broadcast instances of the target broadcast audio source according to the adapting _ SID carried in the first request message, so as to obtain corresponding broadcast synchronization information.

Step S607, the first broadcast audio source determines the broadcast synchronization information according to the adapting _ SID, and sends the broadcast synchronization information to the broadcast audio receiver.

In step S608, the broadcast audio receiver synchronously plays the broadcast of the broadcast audio source according to the broadcast synchronization information.

If, in step S605, the broadcast assistant traverses the IRK stored by itself, and cannot successfully analyze the Source _ Address carried in the first request message, it is determined that there is no matching IRK, and step S609 is executed.

Step S609, the broadcasting assistant displays prompt information on a display screen of the broadcasting assistant; the hint information is used to request a user to determine the target broadcast audio source.

Aiming at the fact that the Type of Source _ Address _ Type is RPA, the receiving device is a Broadcast Audio receiver, the first device is a first Broadcast Audio Source, or the first device integrates the functions of the first Broadcast Audio Source and a Broadcast assistant (which is collectively called as the first Broadcast Audio Source in the embodiment of the application), the device for generating the multimedia Stream is a target Broadcast Audio Source, the Broadcast Audio receiver and the target Broadcast Audio Source establish Broadcast Audio synchronization, and the Broadcast Audio receiver synchronously plays the multimedia Stream (such as music) of the Broadcast Audio Source; however, in a scenario where broadcast synchronization is lost due to signal interference or too far physical distance between the broadcast audio receiver and the broadcast audio source, another optional detailed processing flow of the method for establishing broadcast synchronization provided by the embodiment of the present application may include the following steps, as shown in fig. 8:

step S801, if the Broadcast Audio receiver determines that the LE connection between the Broadcast Audio receiver and the first Broadcast Audio source is disconnected, the Broadcast Audio receiver sends a request message (Solicitation Requests) to the first Broadcast Audio source, where the Solicitation Requests may be an extended advertisement PDU including a Broadcast Audio Scan Service UUID. The first broadcast audio source scans for Solicitation Requests and initiates an LE connection with the broadcast audio receiver.

In some embodiments, step S801 is not performed if the LE connection between the broadcast audio receiver and the first broadcast audio source is not disconnected.

In step S802, the broadcast audio receiver sends a first notification message (notification) to the first broadcast audio source, where the first notification message is used to notify the first broadcast audio source that the broadcast audio receiver has lost broadcast synchronization or that the broadcast audio receiver has stopped synchronizing to periodic broadcast.

In step S803, the broadcast audio receiver transmits a first request message for requesting transmission of broadcast synchronization information from a first broadcast audio source.

In some embodiments, at least one or more of the following is carried in the first request message: source _ Address _ Type, Source _ Address, and Address _ SID.

Step S804, the first broadcast audio Source determines, according to Source _ Address _ Type, that the target broadcast audio Source requesting synchronization is an RPA Address Type.

Step S805, the first broadcast audio Source analyzes the Source _ Address carried in the first request message by using its own IRK, and if the analysis is successful, the first broadcast audio Source is the target broadcast audio Source.

Step S806, the first broadcast audio source determines corresponding broadcast synchronization information based on the adapting _ SID carried in the first request message, and sends the broadcast synchronization information to the broadcast audio receiver.

In step S807, the broadcast audio receiver synchronously plays the broadcast of the broadcast audio source according to the broadcast synchronization information.

In the method for establishing broadcast synchronization provided in the embodiment of the present application, when a broadcast audio receiver establishes a synchronization relationship with a broadcast audio source and the broadcast audio receiver synchronously plays the broadcast audio source, if the broadcast synchronization is lost due to signal interference or an excessively long physical distance between the broadcast audio receiver and the broadcast audio source, the broadcast audio receiver sends a first request message to the broadcast audio source or a broadcast assistant to request to restore the broadcast synchronization between the broadcast audio receiver and the broadcast audio source; the broadcast audio source or broadcast assistant can be capable of receiving a first request message comprising: source _ Address _ Type, Source _ Address and updating _ SID information determines that the broadcast audio Source and broadcast audio receiver desire to broadcast a synchronized multimedia stream. Therefore, the broadcast synchronization between the broadcast audio receiver and the broadcast audio source is recovered, and the use experience of a user is improved.

It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

In order to implement the method for establishing broadcast synchronization provided in the embodiment of the present application, an embodiment of the present application further provides a receiving device, where an optional constituent structure of the receiving device 900 is shown in fig. 9, and the method includes:

a first sending unit 901, configured to send a first request message if the receiving device loses broadcast synchronization, where the first request message is used to request to acquire broadcast synchronization information.

In some embodiments, the first sending unit 901 is further configured to send a first notification message, where the first notification message is used to notify that the receiving device has lost broadcast synchronization.

In some embodiments, the receiving device 900 further comprises:

a first receiving unit 902 configured to receive the broadcast synchronization information;

a first processing unit 903 configured to establish broadcast synchronization with a target transmission apparatus based on the broadcast synchronization information.

In some embodiments, the first processing unit 903 is configured to play a multimedia stream corresponding to the broadcast synchronization information based on the broadcast synchronization information.

In some embodiments, the first sending unit 901 is further configured to send a second request message, where the second request message is used to request to establish a connection with a first device, and the first device is used to send broadcast synchronization information to the receiving device.

In some embodiments, the second request message comprises at least: broadcast Audio Scan Service UUID.

In some embodiments, at least one or more of the following is included in the first request message: the address type of the target sending device and the address of the target sending device.

In order to implement the method for establishing broadcast synchronization provided in the embodiment of the present application, an embodiment of the present application further provides a first device, where an optional constituent structure of the first device 1000 is as shown in fig. 10, and the method includes:

a second receiving unit 1001 is configured to receive a first request message, where the first request message is used for requesting a receiving device to acquire broadcast synchronization information.

In some embodiments, the second receiving unit 1001 is further configured to receive a first notification message, where the first notification message is used to notify the receiving device that the broadcast synchronization has been lost.

In some embodiments, the second receiving unit 1001 is further configured to receive a second request message, where the second request message is used to request to establish a connection with the first device.

In some embodiments, the second request message comprises at least: the broadcast scans for service UUIDs.

In some embodiments, the first device 1000 further comprises:

the second processing unit 1002 is configured to confirm, based on the first request message, a target transmission device corresponding to the broadcast synchronization information.

In some embodiments, the second processing unit 1002 is configured to determine broadcast synchronization information corresponding to an advertisement set identifier carried in the first request message;

the first device 1000 further comprises: a second transmitting unit 1003 configured to transmit the broadcast synchronization information to the receiving device.

In some embodiments, if the first device includes an auxiliary device, the second processing unit 1002 is configured to determine, based on the address type of the target sending device and the address of the target sending device, which are carried in the first request message, a target sending device corresponding to the broadcast synchronization information; the auxiliary device is used for establishing broadcast synchronization of the receiving device and the target transmitting device.

In some embodiments, if the first device includes an auxiliary device that is not synchronized with the target transmitting device, the second processing unit 1002 is further configured to establish synchronization with the target transmitting device.

In some embodiments, if the first device includes a first sending device, the second processing unit 1002 is configured to determine, based on the address type of the target sending device and the address of the target sending device carried in the first request message, and the address type of the first sending device and the address of the first sending device, a target sending device corresponding to the broadcast synchronization information.

In some embodiments, the determining, by the second processing unit 1002, the target sending device corresponding to the broadcast synchronization information based on the address type of the target sending device and the address of the target sending device carried in the first request message, and the address type of the first sending device and the address of the first sending device includes:

and if the address type of the target sending equipment is the same as that of the first sending equipment and the address of the target sending equipment is the same as that of the first sending equipment, determining that the first sending equipment is the target sending equipment.

In some embodiments, if the first device includes an auxiliary device, and the address type of the target sending device carried in the first request message is a resolvable private address, the second processing unit is configured to determine the target sending device based on an IRK stored in the auxiliary device.

In some embodiments, the second processing unit 1002 is configured to traverse the IRK stored in the auxiliary device, perform address resolution on the target sending device carried in the first request message by using the IRK, and determine a target IRK for resolving an address of the target sending device; determining the target sending device based on the target IRK.

In some embodiments, the second processing unit 1002 is configured to traverse an IRK stored in itself, and if a target IRK used for resolving an address of a target sending device carried in the first request message is not determined, the auxiliary device displays a prompt message; the prompt message is used for requesting a user to determine the target sending equipment.

In some embodiments, if the first device includes a first sending device, and the address type of the target sending device carried in the first request message is a private address capable of being resolved, the second processing unit 1002 is configured to determine the target sending device based on the IRK of the first sending device.

44. The first device according to claim 43, wherein the second processing unit 1002 is configured to utilize the IRK of the first sending device to resolve an address of a target sending device carried in the first request message; and if the analysis is successful, determining that the first sending equipment is the target sending equipment.

An embodiment of the application provides a receiving device comprising a processor and a memory for storing a computer program capable of running on the processor, wherein the processor is configured to cause the receiving device to perform the steps of the method of establishing broadcast synchronization when running the computer program.

An embodiment of the present application provides a first device, including a processor and a memory for storing a computer program capable of running on the processor, wherein the processor is configured to execute the steps of the method for establishing broadcast synchronization, the method being performed by the first device when the computer program is run.

An embodiment of the present application further provides a chip, including: and the processor is used for calling and running the computer program from the memory so that the equipment provided with the chip executes the method for establishing the broadcast synchronization.

The embodiment of the application also provides a storage medium, which stores an executable program, and the executable program is executed by a processor to realize the method for establishing broadcast synchronization.

Embodiments of the present application further provide a computer program product, which includes computer program instructions, where the computer program instructions enable a computer to execute the above method for establishing broadcast synchronization.

An embodiment of the present application further provides a computer program, where the computer program enables a computer to execute the above method for establishing broadcast synchronization.

Fig. 11 is a schematic diagram of a hardware component structure of an electronic device (a receiving device or a first device) according to an embodiment of the present application, where the electronic device 700 includes: at least one processor 701, a memory 702, and at least one network interface 704. The various components in the electronic device 700 are coupled together by a bus system 705. It is understood that the bus system 705 is used to enable communications among the components. The bus system 705 includes a power bus, a control bus, and a status signal bus in addition to a data bus. But for clarity of illustration the various busses are labeled in figure 11 as the bus system 705.

It will be appreciated that the memory 702 can be either volatile memory or nonvolatile memory, and can include both volatile and nonvolatile memory. The non-volatile Memory may be ROM, Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), magnetic random access Memory (FRAM), Flash Memory (Flash Memory), magnetic surface Memory, optical Disc, or Compact Disc Read-Only Memory (CD-ROM); the magnetic surface storage may be disk storage or tape storage. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), Enhanced Synchronous Dynamic Random Access Memory (Enhanced DRAM), Synchronous Dynamic Random Access Memory (SLDRAM), Direct Memory (DRmb Access), and Random Access Memory (DRAM). The memory 702 described in embodiments herein is intended to comprise, without being limited to, these and any other suitable types of memory.

The memory 702 in the embodiments of the present application is used to store various types of data to support the operation of the electronic device 700. Examples of such data include: any computer program for operating on electronic device 700, such as application 7022. A program for implementing the methods according to embodiments of the present application may be included in application 7022.

The method disclosed in the embodiments of the present application may be applied to the processor 701, or implemented by the processor 701. The processor 701 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 701. The Processor 701 may be a general purpose Processor, a Digital Signal Processor (DSP), or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The processor 701 may implement or perform the methods, steps, and logic blocks disclosed in the embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software modules may be located in a storage medium located in the memory 702, and the processor 701 may read the information in the memory 702 and perform the steps of the aforementioned methods in conjunction with its hardware.

In an exemplary embodiment, the electronic Device 700 may be implemented by one or more Application Specific Integrated Circuits (ASICs), DSPs, Programmable Logic Devices (PLDs), Complex Programmable Logic Devices (CPLDs), FPGAs, general purpose processors, controllers, MCUs, MPUs, or other electronic components for performing the foregoing methods.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It should be understood that the terms "system" and "network" are often used interchangeably herein in this application. The term "and/or" in this application is only one kind of association relationship describing the association object, and means that there may be three kinds of relationships, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this application generally indicates that the preceding and following associated objects are in an "or" relationship.

The above description is only exemplary of the present application and should not be taken as limiting the scope of the present application, as any modifications, equivalents, improvements, etc. made within the spirit and principle of the present application should be included in the scope of the present application.

Claims

A method of establishing broadcast synchronization, the method comprising:

if the receiving equipment loses the broadcast synchronization, the receiving equipment sends a first request message, and the first request message is used for requesting to acquire the broadcast synchronization information.
The method of claim 1, wherein the method further comprises:

the receiving device sends a first notification message, wherein the first notification message is used for notifying the receiving device that the broadcast synchronization is lost.
The method according to claim 1 or 2, wherein the method further comprises:

the receiving device receives the broadcast synchronization information;

the receiving device establishes broadcast synchronization with a target transmitting device based on the broadcast synchronization information.
The method of claim 3, wherein the receiving device establishing broadcast synchronization with a target transmitting device based on the broadcast synchronization information comprises:

and the receiving equipment plays the multimedia stream corresponding to the broadcast synchronization information based on the broadcast synchronization information.
The method of any of claims 1 to 4, wherein the method further comprises:

the receiving device sends a second request message, where the second request message is used to request to establish a connection with a first device, and the first device is used to send broadcast synchronization information to the receiving device.
The method of claim 5, wherein the second request message comprises at least:

a universally unique identifier UUID of the scanning service is broadcast.
The method according to any one of claims 1 to 6, wherein the first request message comprises at least one or more of:

the address type of the target sending device, the address of the target sending device and the advertisement set identification.
A method of establishing broadcast synchronization, the method comprising:

the first device receives a first request message, wherein the first request message is used for requesting the receiving device to acquire the broadcast synchronization information.
The method of claim 8, wherein the method further comprises:

the first device receives a first notification message for notifying the receiving device that broadcast synchronization has been lost.
The method of claim 8 or 9, wherein the method further comprises:

and the first equipment receives a second request message, wherein the second request message is used for requesting to establish connection with the first equipment.
The method of claim 10, wherein the second request message comprises at least:

a universally unique identifier UUID of the scanning service is broadcast.
The method of any of claims 8 to 11, wherein the method further comprises:

and the first equipment confirms the target sending equipment corresponding to the broadcast synchronization information based on the first request message.
The method of claim 12, wherein the method further comprises:

the first equipment determines broadcast synchronization information corresponding to the advertisement set identification carried in the first request message;

the first device sends the broadcast synchronization information to the receiving device.
The method of claim 12 or 13, wherein the first device confirming the target transmitting device to which the broadcast synchronization information corresponds based on the first request message comprises:

if the first device comprises an auxiliary device, the auxiliary device determines a target sending device corresponding to the broadcast synchronization information based on the address type of the target sending device and the address of the target sending device carried in the first request message;

the auxiliary device is used for establishing broadcast synchronization of the receiving device and the target transmitting device.
The method of claim 12 or 13, wherein the first device confirming the target transmitting device to which the broadcast synchronization information corresponds based on the first request message comprises:

if the first device is a first sending device, the first sending device determines a target sending device corresponding to the broadcast synchronization information based on the address type of the target sending device and the address of the target sending device carried in the first request message, and the address type of the first sending device and the address of the first sending device.
The method of claim 15, wherein the determining, by the first sending device, the target sending device corresponding to the broadcast synchronization information based on the address type of the target sending device and the address of the target sending device carried in the first request message, and the address type of the first sending device and the address of the first sending device comprises:

and if the address type of the target sending equipment is the same as that of the first sending equipment and the address of the target sending equipment is the same as that of the first sending equipment, determining that the first sending equipment is the target sending equipment.
The method of claim 12 or 13, wherein the determining, by the first device based on the first request message, the target transmission device to which the broadcast synchronization information corresponds comprises:

if the first device is an auxiliary device and the address type of the target sending device carried in the first request message is a resolvable private address, the auxiliary device determines the target sending device based on an Identity Resolution Key (IRK) stored by the auxiliary device.
The method of claim 17, wherein the secondary device determining the target transmitting device based on an identity-resolving key (IRK) stored by the secondary device comprises:

the auxiliary equipment traverses the IRK stored by the auxiliary equipment, analyzes the address of the target sending equipment carried in the first request message by using the IRK, and determines the target IRK for analyzing the address of the target sending equipment;

determining the target transmitting device based on the target IRK.
The method of claim 17 or 18, wherein the secondary device determining the target transmitting device based on the IRK stored by the secondary device comprises:

the auxiliary equipment traverses the IRK stored by the auxiliary equipment, and if the target IRK used for analyzing the address of the target sending equipment carried in the first request message cannot be determined, the auxiliary equipment displays prompt information;

the prompt message is used for requesting a user to determine the target sending equipment.
The method of any one of claims 14, 17 to 19, wherein the method further comprises:

if the auxiliary device and the target sending device are not kept synchronous, the auxiliary device establishes synchronization with the target sending device.
The method of claim 12 or 13, wherein the determining, by the first device based on the first request message, the target transmission device to which the broadcast synchronization information corresponds comprises:

if the first device is a first sending device and the address type of the target sending device carried in the first request message is a private address capable of being resolved, the first sending device determines the target sending device based on the IRK of the first sending device.
The method of claim 21, wherein the first transmitting device determining the target transmitting device based on the IRK of the first transmitting device comprises:

the first sending device analyzes the address of the target sending device carried in the first request message by using the IRK of the first sending device;

and if the analysis is successful, determining that the first sending equipment is the target sending equipment.
A receiving device, the receiving device comprising:

a first sending unit, configured to send a first request message if the receiving device loses broadcast synchronization, where the first request message is used to request to acquire broadcast synchronization information.
The receiving device of claim 23,

the first sending unit is further configured to send a first notification message, where the first notification message is used to notify the receiving device that broadcast synchronization has been lost.
The reception apparatus according to claim 23 or 24, wherein the reception apparatus further comprises:

a first receiving unit configured to receive the broadcast synchronization information;

a first processing unit configured to establish broadcast synchronization with a target transmission apparatus based on the broadcast synchronization information.
The receiving device of claim 25, wherein,

the first processing unit is configured to play a multimedia stream corresponding to the broadcast synchronization information based on the broadcast synchronization information.
The receiving device of any of claims 23 to 26,

the first sending unit is further configured to send a second request message, where the second request message is used to request to establish a connection with a first device, and the first device is used to send broadcast synchronization information to the receiving device.
The receiving device of claim 27, wherein the second request message comprises at least:

the Broadcast scans the universally unique identifier Broadcast Audio Scan Service UUID of the Service.
The receiving device of any of claims 23 to 28, wherein the first request message includes at least one or more of:

the address type of the targeted delivery device, the address of the targeted delivery device, and the advertisement set identification.
A first device, the first device comprising:

the second receiving unit is configured to receive a first request message, where the first request message is used for requesting, by a receiving device, to acquire broadcast synchronization information.
The first device of claim 30,

the second receiving unit is further configured to receive a first notification message, where the first notification message is used to notify the receiving device that broadcast synchronization has been lost.
The first device of claim 30 or 31,

the second receiving unit is further configured to receive a second request message, where the second request message is used to request to establish a connection with the first device.
The first device of claim 32, wherein the second request message comprises at least:

a universally unique identifier UUID of the broadcast scanning service.
The first device of any of claims 30 to 22, wherein the first device further comprises:

and the second processing unit is configured to confirm the target sending equipment corresponding to the broadcast synchronization information based on the first request message.
The first device of claim 34,

the second processing unit is configured to determine broadcast synchronization information corresponding to an advertisement set identifier carried in the first request message;

the first device further comprises: a second transmitting unit configured to transmit the broadcast synchronization information to the receiving apparatus.
The first device according to claim 34 or 35, wherein if the first device includes an auxiliary device, the second processing unit is configured to determine, based on an address type of a target sending device and an address of the target sending device that are carried in the first request message, a target sending device corresponding to the broadcast synchronization information;

the auxiliary device is used for establishing broadcast synchronization of the receiving device and the target transmitting device.
The first device according to claim 34 or 35, wherein if the first device includes a first sending device, the second processing unit is configured to determine, based on the address type of the target sending device and the address of the target sending device carried in the first request message, and the address type of the first sending device and the address of the first sending device, a target sending device corresponding to the broadcast synchronization information.
The first device of claim 37, wherein the second processing unit, configured to determine, based on the address type of the target sending device and the address of the target sending device carried in the first request message, and the address type of the first sending device and the address of the first sending device, the target sending device corresponding to the broadcast synchronization information includes:

and if the address type of the target sending equipment is the same as that of the first sending equipment and the address of the target sending equipment is the same as that of the first sending equipment, determining that the first sending equipment is the target sending equipment.
The first device according to claim 34 or 35, wherein if the first device includes an auxiliary device, and the address type of the target sending device carried in the first request message is a decodable private address, the second processing unit is configured to determine the target sending device based on an identity resolution key IRK stored in the auxiliary device.
The first device according to claim 39, wherein the second processing unit is configured to traverse the IRK stored by the secondary device, and determine a target IRK for resolving an address of a target transmitting device by using address resolution of the target transmitting device carried in the first request message by the IRK;

determining the target sending device based on the target IRK.
The first device according to claim 39 or 40, wherein the second processing unit is configured to traverse an IRK stored in itself, and if a target IRK for resolving an address of a target sending device carried in the first request message is not determined, the auxiliary device displays a prompt message;

the prompt message is used for requesting a user to determine the target sending equipment.
The first device of any of claims 36, 39 to 41, wherein the secondary device is not synchronized with the target transmitting device, the second processing unit is further configured to establish synchronization with the target transmitting device.
The first device according to claim 34 or 35, wherein if the first device includes a first sending device, and the address type of the target sending device carried in the first request message is a resolvable private address, the second processing unit is configured to determine the target sending device based on the IRK of the first sending device.
The first device of claim 43, wherein the second processing unit is configured to resolve an address of a target sending device carried in the first request message by using an IRK of the first sending device;

and if the analysis is successful, determining that the first sending equipment is the target sending equipment.
A receiving device comprising a processor and a memory for storing a computer program capable of running on the processor, wherein,

the processor is adapted to cause the receiving device to perform the steps of the method of establishing broadcast synchronization of any of claims 1 to 7 when running the computer program.
A first device comprising a processor and a memory for storing a computer program capable of running on the processor, wherein,

the processor is adapted to cause the first device to perform the steps of the method of establishing broadcast synchronization of any of claims 8 to 22 when running the computer program.
A storage medium storing an executable program which, when executed by a processor, implements the method of establishing broadcast synchronization of any one of claims 1 to 7.
A storage medium storing an executable program which, when executed by a processor, implements the method of establishing broadcast synchronization of any one of claims 8 to 22.
A computer program product comprising computer program instructions for causing a computer to perform the steps of the method of establishing broadcast synchronization as claimed in any one of claims 1 to 7.
A computer program product comprising computer program instructions to make a computer execute the steps of the method of establishing broadcast synchronization as claimed in any one of claims 8 to 22.
A computer program for causing a computer to carry out the steps of the method of establishing broadcast synchronization as claimed in any one of claims 1 to 7.
A computer program for causing a computer to carry out the steps of the method of establishing broadcast synchronization according to any one of claims 8 to 22.
A chip, comprising: a processor for calling up and running a computer program from a memory so that a device in which the chip is installed performs the steps of the method of establishing broadcast synchronization as claimed in any one of claims 1 to 7.
A chip, comprising: a processor for calling up and running a computer program from a memory so that a device in which the chip is installed performs the steps of the method of establishing broadcast synchronization as claimed in any one of claims 8 to 22.