CN115665707A - Display device and data transmission method - Google Patents

Abstract

The embodiment of the application provides a display device and a data transmission method, and relates to the technical field of Bluetooth communication. The display device includes: the controller is configured to monitor a closing data packet transmitted in a first link under the condition that the display device simultaneously establishes the first link based on a low-power audio protocol and establishes a second link based on a hands-free protocol, wherein the closing data packet is used for indicating that the transmission of an audio sharing data packet in the first link is stopped within an affiliated equal time interval; the controller is further configured to determine a remaining time period when a closing data packet transmitted in the first link is monitored, wherein the remaining time period is a time period remaining in an equal time interval to which the closing data packet belongs; and a communicator configured to perform transmission of the voice call data packet through the second link for the remaining period of time. The embodiment of the application is used for solving the problem that a voice call data packet can not be transmitted in time when a data transmission link is established based on a low-power-consumption audio protocol and a hands-free protocol.

Description

Display device and data transmission method

Technical Field

The embodiment of the application relates to the technical field of Bluetooth communication. And more particularly, to a display apparatus and a data transmission method.

Background

Currently, the Bluetooth Special Interest Group (Bluetooth SIG) has introduced a Low Energy Audio Profile (Low Energy Audio Profile). The low power audio protocol significantly improves the performance of bluetooth audio.

When audio sharing or audio playing is performed through a data transmission link established based on a low-power-consumption audio protocol, a large amount of radio frequency bandwidth is occupied by audio sharing data packets transmitted in the data transmission link. On the other hand, when a voice call is performed by establishing a data transmission link based on the Hands-free Profile (Hands-free Profile), a large amount of radio frequency bandwidth is also required for voice call packets transmitted in the data transmission link. Because the radio frequency bandwidth of the device is generally very limited, it is very likely that the requirements of audio sharing data packet transmission and voice call data packet transmission on the frequency bandwidth cannot be met at the same time, when the device establishes a data transmission link based on a low-power-consumption audio protocol and a data transmission link based on a hands-free protocol at the same time, it is very likely that the voice call data packet cannot be transmitted in time due to the exhaustion of radio frequency resources, and further, the problems of voice call blocking, high call delay and the like are caused.

Disclosure of Invention

An exemplary embodiment of the present application provides a display device and a data transmission method, which are used to solve a problem that a voice call data packet may not be transmitted in time when a device simultaneously establishes a data transmission link based on a low-power audio protocol and a data transmission link based on a hands-free protocol.

The embodiment of the application provides the following technical scheme:

in a first aspect, an embodiment of the present application provides a display device, including:

the controller is configured to monitor a closing data packet transmitted in a first link under the condition that a display device simultaneously establishes the first link based on a low-power audio protocol and establishes a second link based on a hands-free protocol, wherein the closing data packet is used for indicating that audio sharing data packets are stopped being transmitted in the first link within the belonging equal time interval;

the controller is further configured to determine a remaining time period when the shutdown packet transmitted in the first link is monitored, wherein the remaining time period is a time period remaining in an equal time interval to which the shutdown packet belongs;

a communicator configured to perform transmission of voice call data packets over the second link during the remaining period of time.

In a second aspect, an embodiment of the present application provides a data transmission method, including:

under the condition that a display device simultaneously establishes a first link based on a low-power audio protocol and a second link based on a hands-free protocol, monitoring a closing data packet transmitted in the first link, wherein the closing data packet is used for indicating that audio sharing data packets are stopped being transmitted in the first link within an affiliated equal time interval;

when the closing data packet transmitted in the first link is monitored, determining a remaining time period, wherein the remaining time period is a time period remaining in an equal time interval to which the closing data packet belongs;

and transmitting the voice call data packet through the second link in the residual time period.

In a third aspect, the present application provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a computing device, the computer program causes the computing device to implement the data transmission method according to the second aspect.

In a fourth aspect, the present application provides a computer program product, which when run on a computer, causes the computer to implement the data transmission method of the second aspect.

As can be seen from the foregoing technical solutions, in the display device and the data transmission method provided in the embodiments of the present application, when the display device establishes a first link based on a low-power audio protocol and a second link based on a hands-free protocol at the same time, a close packet transmitted in the first link and used for instructing to stop transmitting an audio sharing packet in the first link within an equal time interval to which the close packet belongs is monitored, and when the close packet transmitted in the first link is monitored, a remaining time period in the equal time interval to which the close packet belongs is determined, and a voice call packet is transmitted through the second link within the remaining time period. In the first link established based on the low-power-consumption audio protocol, the audio sharing data packets are respectively transmitted at an equal time interval, and after the transmission of the corresponding audio sharing data packets is completed at the equal time interval, unused sub-events in the equal time interval are in an idle state and do not occupy radio frequency bandwidth, so that the transmission of the voice call data packets is performed through the second link in the time period, the first link and the second link can be prevented from simultaneously using radio frequency resources to transmit the audio sharing data packets and the voice call data packets, and further the voice call data packets cannot be transmitted in time due to the exhaustion of the radio frequency resources are prevented.

Drawings

In order to more clearly illustrate the embodiments of the present application or the implementation manner in the related art, a brief description will be given below of the drawings required for the description of the embodiments or the related art, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art according to the drawings.

Fig. 1 illustrates one of the scene architecture diagrams of the data transmission method in some embodiments;

fig. 2 shows a second scenario architecture diagram of a data transmission method in some embodiments;

FIG. 3 illustrates a third scenario architecture diagram of a data transmission method in some embodiments;

FIG. 4 illustrates a fourth scene architecture diagram of a data transmission method in some embodiments;

FIG. 5 illustrates a control scenario diagram of a display device in some embodiments;

fig. 6 shows a hardware configuration block diagram of a control device in some embodiments;

fig. 7 shows a hardware configuration block diagram of a display device in some embodiments;

FIG. 8 illustrates a diagram of software configuration in a display device in some embodiments;

FIG. 9 illustrates a flow chart of steps of a data transmission method in some embodiments;

FIG. 10 shows a schematic of equal time intervals in some embodiments;

FIG. 11 is a data structure diagram of a protocol packet in some embodiments;

FIG. 12 shows a schematic of the remaining time period in some embodiments;

FIG. 13 illustrates one of the interaction flow diagrams of a data transmission method in some embodiments;

FIG. 14 illustrates a second interaction flow diagram of a data transmission method in some embodiments;

fig. 15 shows a third interaction flow diagram of a data transmission method in some embodiments.

Detailed Description

To make the purpose and embodiments of the present application clearer, the following will clearly and completely describe the exemplary embodiments of the present application with reference to the attached drawings in the exemplary embodiments of the present application, and it is obvious that the described exemplary embodiments are only a part of the embodiments of the present application, and not all of the embodiments.

It should be noted that the brief descriptions of the terms in the present application are only for convenience of understanding of the embodiments described below, and are not intended to limit the embodiments of the present application. These terms should be understood in their ordinary and customary meaning unless otherwise indicated. The terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a product or apparatus that comprises a list of elements is not necessarily limited to all elements expressly listed, but may include other elements not expressly listed or inherent to such product or apparatus.

Fig. 1 is a schematic view of a scene architecture of a data transmission method according to some embodiments of the present application. As shown in fig. 1, a scenario architecture of a data transmission method provided in an embodiment of the present application includes: a display device 100, a first terminal device 200, and a second terminal device 300. Two data transmission links are established between the display device 100 and the first terminal device 200, one of them is: the first link is established based on a Low power consumption Audio Profile (Low Energy Audio Profile), and the second link is established based on a Hands-Free protocol (Hands-Free Profile). The first terminal device 200 and the second terminal device 300 establish a voice call link, and the first terminal device 200 and the second terminal device 300 can perform a voice call through the voice call link.

The audio protocol with low power consumption defines two roles of an Initiator (Initiator) and an Acceptor (Acceptor). The first terminal device 200 is used to implement an initiator role in the low power audio protocol, and the display device 100 is used to implement a recipient role in the low power audio protocol. The first terminal device 200 packages audio data to be shared into an audio sharing data packet, sends the audio sharing data packet to the display device 100 through the first link, and after the display device 100 receives the audio sharing data packet sent by the first terminal device 200, the audio sharing data packet is analyzed to obtain audio sharing data carried in the audio sharing data packet, and audio output is performed according to the audio sharing data obtained through analysis, so that a user can hear audio content shared by the first terminal device 200.

The Hands-Free protocol defines two roles of an Audio Gateway (AG) and a Hands-Free component (handles-Free, HF). The first terminal device 200 is used to implement an audio gateway role in the hands-free protocol, and the display device 100 is used to implement a hands-free component role in the hands-free protocol. After the first terminal device 200 establishes a voice call link with the second terminal device 300, the first terminal device 200 packages voice call data sent by the second terminal device 300 into a voice call data packet, and sends the voice call data packet to the display device 100 through the second link, after the display device 100 receives the voice call data packet sent by the first terminal device 200, the voice call data packet is analyzed to obtain voice call data carried in the voice call data packet, and audio output is performed according to the voice call data obtained through analysis, so that a user can hear voice content sent by the second terminal device 300. Meanwhile, the display device 100 may acquire voice content spoken by a user to obtain voice call data, package the acquired voice call data into a voice call data packet, and send the voice call data packet to the first terminal device 200 through the second link, after receiving the voice call data packet sent by the display device 100, the first terminal device 200 parses the voice call data packet to acquire voice call data carried in the voice call data packet, and sends the voice call data to the second terminal device 300, so that the second terminal device 300 may play the voice content spoken by the user.

Fig. 2 is a schematic view of a scene architecture of a data transmission method according to another embodiment of the present application. As shown in fig. 2, a scenario architecture of a data transmission method provided in the embodiment of the present application includes: a display device 100, a first terminal device 200, and a third terminal device 400. Two data transmission links are established between the display device 100 and the first terminal device 200, one of them is: the first link is established based on a low-power audio protocol, and the other link is established based on a hands-free protocol. The display apparatus 100 and the third terminal apparatus 400 establish a voice call link, and the display apparatus 100 and the third terminal apparatus 400 can perform a voice call through the voice call link. For the audio protocol with low power consumption, the first terminal device 200 is configured to implement an initiator role in the audio protocol with low power consumption, and the display device 100 is configured to implement a recipient role in the audio protocol with low power consumption. For the handsfree protocol, the display device 100 is used to implement an audio gateway role in the handsfree protocol, and the first terminal device 200 is used to implement a handsfree set role in the handsfree protocol. The functions of the initiator, the recipient, the audio gateway and the hands-free kit are similar to those of the above embodiments and will not be described herein.

Fig. 3 is a schematic view of a scene architecture of a data transmission method according to another embodiment of the present application. As shown in fig. 3, a scenario architecture of the data transmission method provided in the embodiment of the present application includes: a display device 100, a fourth terminal device 500, and a fifth terminal device 600. Two data transmission links are established between the display device 100 and the fourth terminal device 500, one of which is: the first link is established based on a low-power audio protocol, and the other link is established based on a hands-free protocol. The fourth terminal device 500 and the fifth terminal device 600 establish a voice call link, and the fourth terminal device 500 and the fifth terminal device 600 can perform a voice call through the voice call link. For the audio protocol with low power consumption, the display device 100 is configured to implement an initiator role in the audio protocol with low power consumption, and the fourth terminal device 500 is configured to implement a recipient role in the audio protocol with low power consumption. For the handsfree protocol, the four-terminal device 500 is used to implement an audio gateway role in the handsfree protocol, and the display device 100 is used to implement a handsfree component role in the handsfree protocol. The functions of the initiator, the recipient, the audio gateway and the hands-free kit are similar to those of the above embodiments and will not be described herein.

Fig. 4 is a schematic view of a scene architecture of a data transmission method according to another embodiment of the present application. As shown in fig. 4, a scene architecture of the data transmission method provided in the embodiment of the present application includes: a display device 100, a fifth terminal device 600, and a sixth terminal device 700. Two data transmission links are established between the display device 100 and the fifth terminal device 600, one of them is: the first link is established based on a low-power audio protocol, and the other link is established based on a hands-free protocol. The display apparatus 100 and the sixth terminal apparatus 700 establish a voice call link, and the display apparatus 100 and the sixth terminal apparatus 700 can perform a voice call through the voice call link. For the audio protocol with low power consumption, the display device 100 is configured to implement an initiator role in the audio protocol with low power consumption, and the fifth terminal device 600 is configured to implement a recipient role in the audio protocol with low power consumption. For the handsfree protocol, the display device 100 is used to implement an audio gateway role in the handsfree protocol, and the fifth terminal device 600 is used to implement a handsfree set role in the handsfree protocol. The functions of the initiator, the recipient, the audio gateway and the hands-free kit are similar to those of the above embodiments and will not be described herein.

The display device 100 in the embodiments shown in fig. 1 to 4 may have various embodiments, for example, a television, a smart speaker, a Personal Computer (PC), a laser projection device, a display (monitor), an electronic whiteboard (electronic whiteboard), a wearable device, a vehicle-mounted device, an electronic desktop (electronic table), etc., and the terminal devices (first terminal device, second terminal device, third terminal device, fourth terminal device, fifth terminal device, sixth terminal device) may also have various embodiments, for example: mobile phone, sound box, bluetooth earphone, bluetooth headset, notebook computer, personal computer, palm computer, etc.

Fig. 5 is a schematic diagram of a control scenario of a display device according to some embodiments of the present application. As shown in fig. 5, a control scene schematic diagram of a display device provided in the embodiment of the present application includes: a display device 100, a control device 800, and a smart device 900.

In some embodiments, the control device 800 may be a remote controller, and the communication between the remote controller and the display device 100 includes an infrared protocol communication or a bluetooth protocol communication, and other short-distance communication methods, and the display device 100 is controlled by a wireless or wired method. The user may input a user instruction through a key on a remote controller, a voice input, a control panel input, etc., to control the display apparatus 100.

In some embodiments, the display device 100 may also be controlled using a smart device 900 (e.g., a mobile terminal, a tablet, a computer, a laptop, etc.). For example, the display device 100 is controlled using an application running on the smart device.

In some embodiments, the display device 100 may also be controlled in a manner other than the control apparatus 800 and the smart device 900, for example, the voice command control of the user may be directly received by a module configured inside the display device 100 for acquiring the voice command.

Fig. 6 exemplarily shows a block diagram of the configuration of the control device 800 in the embodiment shown in fig. 1. As shown in fig. 6, the control device 800 includes a controller 810, a communication interface 820, a user input/output interface 830, a memory, and a power supply. The control device 800 can receive an operation instruction input by a user, convert the operation instruction into an instruction which can be recognized and responded by the display device 800, and forward the operation instruction or the instruction obtained by converting the voice instruction to the display device 100 to play a role in interaction mediation between the user and the display device 100.

As shown in fig. 7, the display apparatus 100 includes at least one of a tuner demodulator 110, a communicator 120, a detector 130, an external device interface 140, a controller 150, a display 160, an audio output interface 170, a memory, a power supply, and a user interface.

In some embodiments, the tuner/demodulator 110 receives broadcast television signals via wired or wireless reception, and demodulates audio/video signals, such as EPG data signals, from a plurality of wireless or wired broadcast television signals. In some embodiments, the tuners 110 may be located in different separate devices, i.e., the tuners 110 may also be located in a device external to the physical device in which the controller 150 is located, such as an external set-top box.

The communicator 120 is a component for communicating with external devices (e.g., the controller 800, a server, etc.) according to various communication protocol types. For example: the communicator 120 may include at least one of a Wifi module, a bluetooth module, a wired ethernet module, and other network communication protocol chips or near field communication protocol chips, and an infrared receiver. The display apparatus 100 may perform transmission and reception of control signals and data signals with an external apparatus through the communicator 120.

The detector 130 is used to collect signals of the external environment or interaction with the outside. For example, the detector 130 includes a light receiver, a sensor for collecting the intensity of ambient light; alternatively, the detector 130 includes an image collector, such as a camera, which can be used to collect external environment scenes, attributes of the user, or user interaction gestures, or the detector 130 includes a sound collector, such as a microphone, which is used to receive external sounds.

The external device interface 140 may include, but is not limited to, the following: high Definition Multimedia Interface (HDMI), analog or data high definition component input interface (component), composite video input interface (CVBS), USB input interface (USB), RGB port, and the like. The interface may be a composite input/output interface formed by the plurality of interfaces.

The controller 150 controls the operation of the display device and responds to the user's operation through various software control programs stored in the memory. The controller 150 controls the overall operation of the display apparatus 100. For example: in response to receiving a user command for selecting a UI object displayed on the display 160, the controller 150 may perform an operation related to the object selected by the user command. In some embodiments, the controller includes at least one of a Central Processing Unit (CPU), a video processor, an audio processor, a Graphic Processing Unit (GPU), a RAM Random Access Memory (RAM), a ROM (Read-Only Memory), a first interface to an nth interface for input/output, a communication Bus (Bus), and the like.

The display 160 includes a display screen component for presenting a picture, and a driving component for driving image display, a component for receiving an image signal from the controller output, performing display of video content, image content, and a menu manipulation interface, and a user manipulation UI interface. The display 160 may be a liquid crystal display, an OLED display, and a projection display, and may also be a projection device and a projection screen. A user may input a user command on a Graphical User Interface (GUI) displayed on the display 160, and the user interface receives the user input command through the Graphical User Interface (GUI). Alternatively, the user may input a user command by inputting a specific sound or gesture, and the user interface receives the user input command by recognizing the sound or gesture through the sensor. The user interface is a medium interface for interaction and information exchange between an application program or an operating system and a user, and realizes conversion between an internal form of information and a form acceptable to the user. A common presentation form of a User Interface is a Graphical User Interface (GUI), which refers to a User Interface related to computer operations and displayed in a graphical manner. It may be an interface element such as an icon, a window, a control, etc. displayed in a display screen of the electronic device, where the control may include a visual interface element such as an icon, a button, a menu, a tab, a text box, a dialog box, a status bar, a navigation bar, a Widget, etc.

The audio output interface 170 is an audio output component for outputting audio signals, including a speaker. External sound output terminals, etc.

A user interface for receiving a control signal input by a user through the control device 800 (e.g., an infrared remote controller, etc.) or by touch or gesture, etc.

Referring to fig. 8, in some embodiments, the operating system of the display device 100 is divided into four layers, which are an Application (Applications) layer (abbreviated as "Application layer"), an Application Framework (Application Framework) layer (abbreviated as "Framework layer"), an Android runtime (Android runtime) and system library layer (abbreviated as "system runtime layer"), and a kernel layer from top to bottom.

In some embodiments, at least one application program runs in the application program layer, and the application programs may be windows (windows) programs carried by an operating system, system setting programs, clock programs or the like; or may be an application developed by a third party developer. In particular implementations, the application packages in the application layer are not limited to the above examples.

The framework layer provides an Application Programming Interface (API) and a programming framework for the application. The application framework layer includes a number of predefined functions. The application framework layer acts as a processing center that decides to let the applications in the application layer act. The application program can access the resources in the system and obtain the services of the system in execution through the API interface.

As shown in fig. 4, in the embodiment of the present application, the application framework layer includes a manager (Managers), a Content Provider (Content Provider), and the like, where the manager includes at least one of the following modules: an Activity Manager (Activity Manager) is used for interacting with all activities running in the system; a Location Manager (Location Manager) for providing access to the system Location service to the system service or application; a Package Manager (Package Manager) for retrieving various information about the application currently installed on the device; a Notification Manager (Notification Manager) for controlling display and clearing of Notification messages; a Window Manager (Window Manager) is used to manage icons, windows, toolbars, wallpapers, and desktop components on a user interface.

In some embodiments, the activity manager is used to manage the lifecycle of the various applications as well as general navigational fallback functions, such as controlling exit, opening, fallback, etc. of the applications. The window manager is used for managing all window programs, such as obtaining the size of the display screen, judging whether a status bar exists, locking the screen, intercepting the screen, controlling the change of the display window (for example, reducing the display window, shaking the display, distorting and deforming the display, and the like).

In some embodiments, the system runtime layer provides support for the upper layer, i.e., the framework layer, and when the framework layer is used, the android operating system runs the C/C + + library included in the system runtime layer to implement the functions to be implemented by the framework layer.

In some embodiments, the kernel layer is a layer between hardware and software. As shown in fig. 8, the core layer includes at least one of the following drivers: audio drive, display driver, bluetooth drive, camera drive, WIFI drive, USB drive, HDMI drive, sensor drive (like fingerprint sensor, temperature sensor, pressure sensor etc.) and power drive etc..

Fig. 9 exemplarily shows a flowchart of a data transmission method provided in an embodiment of the present application, and an execution subject of the data transmission method may be the display device 100 in any of the embodiments described above. As shown in fig. 9, the data transmission method provided in the embodiment of the present application includes the following steps:

s91, monitoring a closing data packet transmitted in a first link under the condition that a display device establishes the first link based on a low-power audio protocol and establishes a second link based on a hands-free protocol at the same time.

The closing data packet is used for indicating that the audio sharing data packet is stopped being transmitted in the first link within the equal time interval.

In some embodiments, in a case that the display device establishes a first link with other devices based on the audio low power consumption protocol, an initiator in the audio low power consumption protocol may periodically send audio sharing packets (protocol packets of the audio low power consumption protocol) to an acceptor through the first link, and only one audio sharing packet is sent in each period, each period is referred to as an equal time Interval (Isochronous Interval), and a start time of each equal time Interval is referred to as an Anchor Point (Anchor Point) thereof. In an equal time interval, the initiator sends an audio sharing data packet D to the acceptor at an anchor point position, after the acceptor receives the audio sharing data packet D, the initiator sends a protocol data packet (a response data packet ACK) for confirming that the audio sharing data packet sent by the initiator is received, and after receiving the response data packet ACK, the initiator sends a protocol data packet (a closing data packet CIE) for indicating that the audio sharing data packet is stopped being sent in the current equal time interval to the acceptor, so that all the protocol data packets in the equal time interval are sent. And if the initiator does not receive the response data packet ACK sent by the receiver, retransmitting the audio sharing data packet D until the equal time interval is finished or receiving the response data packet ACK sent by the receiver. As shown in fig. 10, in the nth and n +1 equal time intervals, after the initiator sends the audio sharing data packet to the receiver, the receiver sends a response data packet ACK to the data, so that the receiver can confirm that the data initiator receives the corresponding audio sharing data packet D, and can send a close data packet CIE to the initiator to indicate that the response data packet ACK has been successfully received, and the initiator will stop sending the audio sharing data packet in the corresponding equal time interval; in the (n + 2) th equal time interval, the receiver does not receive the response packet ACK sent by the receiver, and therefore, the audio sharing packet D is sent again until the target equal time interval is ended or the response packet ACK sent by the receiver is received.

In some embodiments, an implementation of monitoring shutdown packets transmitted in the first link includes: and monitoring whether the value of the target data bit of each protocol data packet transmitted in the first link is a preset value, and if the value of the target data bit of a certain protocol data packet transmitted in the first link is the preset value, determining that a shutdown data packet transmitted in the first link is monitored.

Referring to fig. 11, fig. 11 is a data structure diagram of a protocol packet of the audio protocol with low power consumption. The protocol data packet of the low-power audio protocol comprises: a preamble 111, an access address 112, a protocol data unit 113, and a Cyclic Redundancy Check (CRC) 94.

The number of data bits of the preamble 111 is 1 or 2 Octets (Octets), the number of data bits of the access address 112 is 4Octets, the number of data bits of the pdu 113 is 2-257 Octets, and the number of data bits of the CRC is 3Octets. The protocol data unit 113 includes: a protocol header 1131, a payload 1132, and a message Integrity Check code (MIC) 1133. The number of data bits of the protocol header 1131 is 16 bits, the number of data bits of the payload 1132 is 0-251Octets, the number of data bits of the message integrity check code 1133 is 10 or 14Octets when transmitted through LE 1M PHY25 (a low power consumption standard with a symbol rate of 1 Msps), the number of data bits of the message integrity check code 1133 is 11 or 15Octets when transmitted through LE2M PHY25 (a low power consumption standard with a symbol rate of 2 Msps), and the number of data bits of the message integrity check code 1133 depends on whether a message integrity check is included in the payload of the protocol data unit 113. The protocol header 1131 of the protocol data unit 113 further includes: PDU type identification (LLID), next Expected Sequence Number (NESN), sequence Number (SN), close synchronization event bit (CIE), reserved data bit (RFU), and Y effective Length (Length). The protocol Data packets transmitted by the Data transmission link are of two types, one type is Data and is called LL Data PDU, and the other type is Control information and is called LL Control PDU; the LLID is used for distinguishing the type of the protocol data packet as data or control information; the NESN and the SN are used for response (Acknowledgement) and data Flow Control (Flow Control) in the transmission process of the protocol data packet, and the closing synchronous event bit is used for indicating whether retransmission of the protocol data packet of the data type is carried out or not; the effective length is used to indicate the number of data bits of the effective data (the sum of the number of data bits of the payload and the MIC).

As described above, since the off-sync event bit (CIE) in the protocol header 1131 of the pdu 113 is used to indicate whether retransmission will be performed, the off-sync event bit (CIE) may be determined as the target data bit, and the value indicating that retransmission will not be performed is set as the preset value. For example: if the value of the off-sync event bit is 0, it indicates that retransmission is to be performed, and if the value of the data bit of the off-sync event bit is 1, it indicates that retransmission is not to be performed, it may be determined that the off-sync packet transmitted in the first link is monitored when the value of the off-sync event bit of a certain protocol packet transmitted in the first link is 1.

S92, determining a remaining time period when the closing data packet transmitted in the first link is monitored.

And the remaining time period is the time period remaining in the equal time interval to which the closing data packet belongs.

For example, as shown in fig. 12, the starting time of the equal time interval is t0, the ending time of the equal time interval is t4, the time taken for the initiator to send the audio sharing packet D to the sink device is [ t0, t1], the time taken for the sink device to send the response packet ACK to the initiator is [ t1, t2], and the time taken for the initiator to send the shutdown packet CIE to the acceptor is [ t2, t3], so that when the shutdown packet transmitted in the data transmission link is monitored, the remaining time period in the equal time interval to which the shutdown packet belongs is transmitted is [ t3, t4], and thus the remaining time period is determined to be [ t3, t4].

And S93, transmitting the voice call data packet through the second link in the residual time period.

In some embodiments, the transmitting of the voice call data packet over the second link during the remaining time period comprises: and the display device is used as an audio gateway to send the voice call data packet to the hands-free component through the second link in the remaining time period.

In some embodiments, the transmitting of the voice call data packet over the second link during the remaining time period comprises: and the display device is used as a hands-free component to receive the voice call data packet sent by the hands-free component in the remaining time period through the second link.

In some embodiments, the transmitting of the voice call data packet over the second link during the remaining time period comprises: and the display device is used as an audio gateway to receive the voice call data packet sent by the hands-free component through the second link in the remaining time period.

In some embodiments, the transmitting of the voice call data packet over the second link during the remaining time period comprises: and the display device is used as a hands-free component to send voice call data packets to the audio gateway through the second link in the remaining time period.

According to the data transmission method provided by the embodiment of the application, under the condition that a display device simultaneously establishes a first link based on a low-power audio protocol and a second link based on a hands-free protocol, a closing data packet transmitted in the first link and used for indicating that audio sharing data packets are stopped being transmitted in the first link within an affiliated equal time interval is monitored, when the closing data packet transmitted in the first link is monitored, the remaining time period in the affiliated equal time interval of the closing data packet is determined, and voice call data packet transmission is carried out through the second link within the remaining time period. In the first link established based on the low-power-consumption audio protocol, the audio sharing data packets are respectively transmitted at an equal time interval, and after the transmission of the corresponding audio sharing data packets is completed at the equal time interval, unused sub-events in the equal time interval are in an idle state and do not occupy radio frequency bandwidth, so that the transmission of the voice call data packets is performed through the second link in the time period, the first link and the second link can be prevented from simultaneously using radio frequency resources to transmit the audio sharing data packets and the voice call data packets, and further the voice call data packets cannot be transmitted in time due to the exhaustion of the radio frequency resources are prevented.

Fig. 13 is an interaction diagram schematically illustrating a data transmission method according to an embodiment of the present application. In fig. 13, a first link is established between the display device and the terminal device based on the low-power audio protocol, a second link is established between the display device and the terminal device based on the hands-free protocol, the display device is used to implement an initiator role in the low-power audio protocol, and the terminal device is used to implement a recipient role in the low-power audio protocol. As shown in fig. 13, a data transmission method provided in the embodiment of the present application includes:

s131, the display device monitors the closing data packet transmitted in the first link.

Because the display device is used for realizing the role of an initiator in the low-power-consumption audio protocol, the terminal device is used for realizing the role of a receiver in the low-power-consumption audio protocol, and the low-power-consumption audio protocol specifies that only the initiator can send a closing data packet to the receiver through the first link, the display device can only monitor whether the protocol data packet sent by the display device through the first link is the closing data packet, but does not monitor whether the protocol data packet received by the display device through the first link is the closing data packet, so that the number of the protocol data packets needing to be monitored is reduced, and the data processing amount during monitoring the closing data packet transmitted in the first link is reduced.

S132, when the display device monitors the closing data packet transmitted in the first link, determining a remaining time period.

And the remaining time period is the time period remaining in the equal time interval to which the closing data packet belongs.

The implementation manner of the display device determining the remaining time period is similar to the above embodiment, and is not described herein again.

And S133, the display device and the terminal device transmit the voice call data packet through the second link in the remaining time period.

In some embodiments, the display device may be used as an audio gateway in the hands-free protocol to transmit voice call data packets with the terminal device as a hands-free component in the hands-free protocol through the second link.

In some embodiments, the display device may perform transmission of voice call packets with the terminal device as an audio gateway in the hands-free protocol through the second link as a hands-free component in the hands-free protocol.

And S134, when the remaining time period is over, the display device judges whether the number of the voice call data packets to be sent through the second link is larger than a threshold number.

In some embodiments, the display device may write the voice call data packets to be sent through the second link into a buffer queue, and in this scenario, the display device may use the number of the voice call data packets buffered in the buffer queue as the number of the voice call data to be sent through the second link.

The threshold data in the embodiment of the application can be set according to the quality requirement of the voice call, if the quality requirement of the voice call is high, the threshold quantity needs to be set to be small, and if the quality requirement of the voice call is low, the threshold quantity can be set to be large. For example: the threshold number may be 5, 8, etc.

In step S134, if the display device determines that the number of the voice call packets to be sent through the second link is greater than the threshold number, the display device may reduce the occupation of the first link on the radio frequency resource by reducing the data amount of the audio sharing data that needs to be transmitted through the first link and/or modifying the transmission parameter of the first link, thereby further ensuring the voice call quality. The implementation scheme for reducing the data amount of the audio sharing data that needs to be transmitted through the first link includes the following step S135, and the implementation scheme for modifying the transmission parameter of the first link includes the following steps S136 and S137:

and S135, the display device reduces the sampling rate and/or the sampling depth of the audio sharing data.

Due to the fact that the sampling rate and/or the sampling depth of the audio sharing data are/is reduced, the data volume of the audio frame can be reduced, and the occupation of the first link transmission on radio frequency resources is further reduced.

S136, the display device sends a transmission parameter setting instruction to a receiver (terminal device) in the low-power audio protocol through the first link.

Correspondingly, the terminal device receives a transmission parameter setting instruction sent by the display device (the initiator in the low-power audio protocol) through the first link.

The transmission parameter setting instruction is used for indicating that the transmission parameter of the first link is modified, and the consumption amount of the radio frequency resource of the first link after the transmission parameter of the first link is smaller than the consumption amount of the radio frequency resource of the first link before the transmission parameter of the first link.

And S137, the terminal equipment responds to the transmission parameter setting instruction to modify the transmission parameter of the first link.

In some embodiments, the transmission parameter setting instruction is specifically configured to indicate at least one of the following 1) to 3):

1) And modifying the number of the sub-events in the equal time interval from a first number to a second number, wherein the first number is smaller than the second number. That is, the number of sub-events in an equal time interval is increased.

The number of sub-events in the equal time interval defines the number of sub-events scheduled in each synchronization interval. Since the number of sub-events (subevents) in the equal time interval is used for the initial transmission PDU of the CIS and the subsequent retransmission thereof, and the sub-events are generally not used completely, and the transmission of the voice call data packet is performed through the second link in the time period corresponding to the unused sub-events, increasing the number of sub-events in one equal time interval can yield more radio frequency resources for the transmission of the voice call data packet.

2) Changing the refresh Timeout (FT) from the first time length to the second time length; the first duration is greater than the second duration. I.e. the refresh timeout is reduced.

The refresh timeout defines how many consecutive equal time intervals can be used to transmit a protocol packet before it is discarded, and after the refresh timeout, no protocol packet is transmitted any more regardless of whether the transmission is successful or not. Reducing the refresh timeout can avoid using too many consecutive equal time intervals to audio share packets, and therefore reducing the refresh timeout can also allow more radio frequency resources to be made available for transmission of voice call packets.

3) Modifying the Burst Number (BN) from the third Number to a fourth Number; the third number is less than the fourth number. I.e. the number of bursts is increased.

The number of bursts defines the number of payloads provided for transmission per CIS event. Under the condition that the data volume of the shared audio data is certain, the burst number is increased, so that the number of protocol data packets needing to be transmitted through the first link can be reduced, the transmission of lead codes, access addresses, redundant cyclic verification codes and the like of the protocol data is reduced, and the data volume needing to be transmitted by the first link is further reduced, so that more radio frequency resources can be given to the transmission of the voice call data packets by increasing the burst number.

Correspondingly, the terminal equipment modifies the transmission parameters of the first link in response to the transmission parameter setting instruction, and the modification comprises at least one of the following steps:

modifying the number of sub-events in the equal time interval from a first number to a second number, wherein the first number is smaller than the second number;

changing the refresh overtime from a first time length to a second time length; the first duration is greater than the second duration;

modifying the burst number from the third number to a fourth number; the third number is less than the fourth number.

In addition, in the upper step S134, regardless of whether the number of voice call packets to be transmitted through the second link is greater than the threshold number, at the end of the remaining period of time, the display device and the terminal device may further perform the step S138.

S138, the audio sharing data packet is transmitted between the display device and the terminal device through the first link, and the step S131 is returned to, and the closing data packet transmitted in the first link is monitored again.

In the data transmission method provided by the embodiment, when the number of the voice call data packets to be sent through the second link is greater than the threshold number, the number of the audio sharing data is reduced by modifying the transmission parameter of the first link, so that the occupation of the first link on the radio frequency resources is reduced, and therefore, the embodiment can give out more radio frequency resources to the second link, and further ensure the quality of the voice call.

Fig. 14 is an interaction diagram schematically illustrating a data transmission method according to an embodiment of the present application. Fig. 14 illustrates an example in which the display device establishes a first link with the terminal device based on the low-power audio protocol, the display device establishes a second link with the terminal device based on the hands-free protocol, the terminal device is configured to implement an initiator role in the low-power audio protocol, and the display device is configured to implement a recipient role in the low-power audio protocol. As shown in fig. 14, the data transmission method provided in the embodiment of the present application includes:

s141, the display device monitors the closing data packet transmitted in the first link.

Because the display device is used for realizing the role of a receiver in the low-power-consumption audio protocol, the terminal device is used for realizing the role of an initiator in the low-power-consumption audio protocol, and the low-power-consumption audio protocol specifies that only the initiator sends a closing data packet to the receiver through the first link, the display device can only monitor whether the protocol data packet received by the display device through the first link is the closing data packet, but does not monitor whether the protocol data packet sent by the display device through the first link is the closing data packet, thereby reducing the number of the protocol data packets to be monitored and reducing the data processing amount when the closing data packet transmitted in the first link is monitored.

And S142, when the display device monitors the closing data packet transmitted in the first link, determining a residual time period.

And the remaining time period is the time period remaining in the equal time interval to which the closing data packet belongs.

And S143, the display device and the terminal device transmit the voice call data packet through the second link in the remaining time period.

And S144, when the remaining time period is over, the display device judges whether the number of the voice call data packets to be sent through the second link is larger than a threshold number.

In some embodiments, the display device writes the voice call data packets to be sent through the second link into the buffer queue, and in this scenario, the display device may use the number of the voice call data packets buffered in the buffer queue as the number of the voice call data packets to be sent through the second link.

In step S134, if the display device determines that the number of the voice call packets to be sent through the second link is greater than the threshold number, the display device may reduce the occupation of the first link on the radio frequency resource by reducing the data amount of the audio sharing data that needs to be transmitted through the first link and/or modifying the transmission parameter of the first link, thereby further ensuring the voice call quality. The implementation scheme for reducing the data amount of the audio sharing data needing to be transmitted through the first link includes the following steps S145 and S146, and the implementation scheme for modifying the transmission parameter of the first link includes the following steps S147 and S148:

s145, the display device sends a sampling parameter setting instruction to an initiator (terminal device) in the low-power audio protocol through the first link.

Correspondingly, the terminal equipment receives a sampling parameter setting instruction sent by a receiver (display equipment) in the low-power audio protocol through the first link.

The sampling parameter setting instruction is used for indicating that the sampling rate and/or the sampling depth of the audio sharing data are/is reduced.

And S146, the terminal equipment responds to the sampling parameter setting instruction to reduce the sampling rate and/or sampling depth of the audio sharing data.

Due to the fact that the sampling rate and/or the sampling depth of the audio sharing data are/is reduced, the data volume of the audio frame can be reduced, and the occupation of the first link transmission on radio frequency resources is further reduced.

S147, the display device sends a transmission parameter setting instruction to a receiver (terminal device) in the low-power audio protocol through the first link.

Correspondingly, the terminal device receives a transmission parameter setting instruction sent by the display device (the initiator in the low-power audio protocol) through the first link.

The transmission parameter setting instruction is used for indicating that the transmission parameter of the first link is modified, and the radio frequency resource consumption of the first link after the transmission parameter of the first link is smaller than the radio frequency resource consumption of the first link before the transmission parameter of the first link.

And S148, the terminal equipment responds to the transmission parameter setting instruction to modify the transmission parameters of the first link.

In some embodiments, the terminal device modifies the transmission parameters of the first link in response to the transmission parameter setting instruction, including at least one of:

modifying the number of sub-events in the equal time interval from a first number to a second number, wherein the first number is smaller than the second number;

changing the refresh overtime from a first time length to a second time length; the first duration is greater than the second duration;

modifying the burst number from the third number to a fourth number; the third number is less than the fourth number.

In addition, in the upper step S144, regardless of whether the number of voice call packets to be transmitted through the second link is greater than the threshold number, the display device and the terminal device may further perform the step S149 when the remaining period of time ends.

And S149, transmitting the audio sharing data packet between the display device and the terminal device through the first link, returning to the step S141, and monitoring the closing data packet transmitted in the first link again.

In the data transmission method provided by the embodiment, when the number of the voice call data packets to be sent through the second link is greater than the threshold number, the number of the audio sharing data is reduced by modifying the transmission parameter of the first link, so that the occupation of the first link on the radio frequency resources is reduced, and therefore, the embodiment can give out more radio frequency resources to the second link, and further ensure the quality of the voice call.

Fig. 15 schematically illustrates an interaction of a data transmission method provided in an embodiment of the present application. Fig. 15 illustrates an example in which the display device establishes a first link with the terminal device based on the low-power audio protocol, the display device establishes a second link with the terminal device based on the hands-free protocol, the display device is configured to implement an initiator role in the low-power audio protocol, and the terminal device is configured to implement a recipient role in the low-power audio protocol. As shown in fig. 15, the data transmission method provided in the embodiment of the present application includes:

and S151, the display device and the terminal device respectively monitor the closing data packets transmitted in the first link.

Because the display device is used for realizing the role of an initiator in the low-power-consumption audio protocol, the terminal device is used for realizing the role of a receiver in the low-power-consumption audio protocol, and the low-power-consumption audio protocol specifies that only the initiator can send a closing data packet to the receiver through the first link, the display device can only monitor whether the protocol data packet sent by the display device through the first link is the closing data packet, but does not monitor whether the protocol data packet received by the display device through the first link is the closing data packet, so that the number of the protocol data packets needing to be monitored is reduced, and the data processing amount during monitoring the closing data packet transmitted in the first link is reduced. Similarly, the terminal device may only monitor whether the protocol data packet received through the first link is the shutdown data packet, and does not monitor whether the protocol data packet sent through the first link by the display device is the shutdown data packet, thereby reducing the number of protocol data packets to be monitored and reducing the data processing amount when monitoring the shutdown data packet transmitted in the first link.

S152, the display device and the terminal device determine a remaining time period when monitoring the shutdown packet transmitted in the first link, respectively.

Wherein the remaining time period is the time period remaining in the equal time interval to which the closing data packet belongs

Since the display device and the terminal device are respectively a sending end and a receiving end for closing the data packet, when the first link transmits the closed data packet, both the display device and the terminal device can monitor the closed data packet transmitted in the first link and determine the same remaining time period. And if the first link does not transmit the closing data packet, neither the display device nor the terminal device can monitor the closing data packet transmitted in the first link.

And S153, the display equipment and the terminal equipment transmit the voice call data packet through the second link in the remaining time period.

S154, when the remaining time period ends, the display device determines whether the number of voice call packets to be sent through the second link is greater than a threshold number.

And S155, when the remaining time period is over, the terminal device judges whether the number of the voice call data packets to be sent through the second link is larger than a threshold number.

In the foregoing steps S154 and S155, if the number of voice call packets to be sent by the terminal device through the second link is greater than the threshold number, or both the number of voice call packets to be sent by the display device and the terminal device through the second link are greater than the threshold number, the data transmission method provided in the embodiment of the present application continues to execute the following steps:

and S156, the terminal equipment sends a sampling parameter setting instruction to an initiator (display equipment) in the low-power audio protocol through the first link.

Correspondingly, the display device receives a sampling parameter setting instruction sent by a receiver (terminal device) in the low-power audio protocol through the first link.

The sampling parameter setting instruction is used for indicating that the sampling rate and/or the sampling depth of the audio sharing data are/is reduced.

And S157, the display equipment responds to the sampling parameter setting instruction to reduce the sampling rate and/or sampling depth of the audio sharing data.

Due to the fact that the sampling rate and/or the sampling depth of the audio sharing data are/is reduced, the data volume of the audio frame can be reduced, and the occupation of the first link transmission on radio frequency resources is further reduced.

And S158, the terminal equipment sends a transmission parameter setting instruction to a receiver (display equipment) in the low-power audio protocol through the first link.

Correspondingly, the display device receives a transmission parameter setting instruction sent by the terminal device (the initiator in the low-power audio protocol) through the first link.

The transmission parameter setting instruction is used for indicating that the transmission parameter of the first link is modified, and the radio frequency resource consumption of the first link after the transmission parameter of the first link is smaller than the radio frequency resource consumption of the first link before the transmission parameter of the first link.

And S159, the display device responds to the transmission parameter setting instruction to modify the transmission parameter of the first link.

In some embodiments, the terminal device modifies the transmission parameter of the first link in response to the transmission parameter setting instruction, including at least one of:

modifying the number of sub-events in the equal time interval from a first number to a second number, wherein the first number is smaller than the second number;

changing the refresh overtime from a first time length to a second time length; the first duration is greater than the second duration;

modifying the burst number from the third number to a fourth number; the third number is less than the fourth number.

In addition, in the upper steps S154 and S155, regardless of whether the number of voice call packets to be transmitted by the display device and the terminal device through the second link is greater than the threshold number, the display device and the terminal device may execute the lower step S1510 at the end of the remaining time period.

And S1510, transmitting the audio sharing data packet between the display device and the terminal device through the first link, returning to the step S151, and monitoring the closing data packet transmitted in the first link again.

In the data transmission method provided by the embodiment, when the number of the voice call data packets to be sent by the terminal device through the second link is greater than the threshold number, the number of the audio sharing data is reduced by modifying the transmission parameter of the first link, so that the occupation of the first link on the radio frequency resource is reduced, and therefore, the embodiment can yield more radio frequency resources to the second link, and further ensure the quality of the voice call.

In some embodiments, on the basis of any of the above embodiments, the data transmission method provided in the embodiments of the present application includes:

when an audio gateway in the hands-free protocol receives a voice call request, whether a hands-free component in the hands-free protocol supports an electric ringing function is determined through a Bluetooth Retrieval Support Function (BRSF), and if the hands-free component supports the electric ringing function, the audio gateway transmits a preset ringing ringtone to the hands-free component through a second link so as to play the ringing ringtone set by the audio gateway on the hands-free component.

For example: the mobile phone is an audio gateway in the hands-free protocol, the display device is a hands-free component in the hands-free protocol, when the mobile phone receives a voice call request, whether the display device supports a ringing function or not is determined, if the display device supports an electric ringing function, the mobile phone transmits preset ringing ringtone to the hands-free component through a second link, and thus the ringing ringtone set in the mobile phone is played on the display device.

In some embodiments, the present application provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a computing device, the computing device is caused to implement the data transmission method described in any one of the above embodiments.

In some embodiments, the present application provides a computer program product, which when run on a computer, causes the computer to implement the data transmission method described in any one of the above embodiments.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

The foregoing description, for purpose of explanation, has been described with reference to specific embodiments. However, the illustrative discussions above are not intended to be exhaustive or to limit the embodiments to the precise forms disclosed above. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles and the practical application, to thereby enable others skilled in the art to best utilize the embodiments and various embodiments with various modifications as are suited to the particular use contemplated.

Claims (10)

1. A display device, comprising:

the controller is configured to monitor a closing data packet transmitted in a first link under the condition that a display device simultaneously establishes the first link based on a low-power audio protocol and establishes a second link based on a hands-free protocol, wherein the closing data packet is used for indicating that audio sharing data packets are stopped being transmitted in the first link within the belonging equal time interval;

the controller is further configured to determine a remaining time period when the shutdown packet transmitted in the first link is monitored, wherein the remaining time period is a time period remaining in an equal time interval to which the shutdown packet belongs;

a communicator configured to perform transmission of voice call data packets over the second link during the remaining period of time.

2. The display device according to claim 1,

the controller is further configured to determine whether the number of voice call packets to be sent through the second link is greater than a threshold number when the remaining time period ends;

the communicator is further configured to send a transmission parameter setting instruction to a recipient in the low power audio protocol through the first link if the number of voice call packets to be sent through the second link is greater than the threshold number;

the transmission parameter setting instruction is used for indicating that the transmission parameter of the first link is modified, and the radio frequency resource consumption of the first link after the transmission parameter of the first link is smaller than the radio frequency resource consumption of the first link before the transmission parameter of the first link.

3. The display device according to claim 1,

the communicator is further configured to receive a transmission parameter setting instruction sent by a receiver in the low-power audio protocol through the first link; the transmission parameter setting instruction is used for indicating that the transmission parameter of the first link is modified, and the consumption of the radio frequency resource of the first link after the transmission parameter of the first link is smaller than the consumption of the radio frequency resource of the first link before the transmission parameter of the first link;

the controller is further configured to modify a transmission parameter of the first link in response to the transmission parameter setting instruction.

4. The display device according to claim 2 or 3, wherein the transmission parameter setting instruction is specifically configured to indicate at least one of:

modifying the number of sub-events in the equal time interval from a first number to a second number; the first number is less than the second number;

changing the refresh overtime FT from a first time length to a second time length; the first duration is greater than the second duration;

modifying the burst number BN from the third number to a fourth number; the third number is less than the fourth number.

5. The display device according to claim 2,

the controller is further configured to reduce a sampling rate and/or a sampling depth of audio sharing data when the display device is used to implement an initiator role in the low power consumption audio protocol and the number of voice call data packets to be sent through the second link is greater than the threshold number.

6. The display device according to claim 5, wherein the controller is specifically configured to monitor whether a protocol packet sent by the display device via the first link is the shutdown packet, so as to monitor a shutdown packet transmitted in the first link.

7. The display device according to claim 2,

the communicator is further configured to send a sampling parameter setting instruction to an initiator in the low power consumption audio protocol through the first link if the display device is used to implement a recipient role in the low power consumption audio protocol and the number of voice call packets to be sent through the second link is greater than the threshold number;

the sampling parameter setting instruction is used for indicating that the sampling rate and/or the sampling depth of the audio sharing data are/is reduced.

8. The display device according to claim 7, wherein the controller is specifically configured to monitor whether a protocol packet received by the display device via the first link is the shutdown packet, so as to monitor a shutdown packet transmitted in the first link.

9. The display device according to claim 1,

the communicator further configured to transmit the audio sharing data packet over the first link at the end of the remaining time period;

the controller is further configured to re-monitor the shutdown packet transmitted in the first link.

10. A method of data transmission, comprising:

under the condition that a display device simultaneously establishes a first link based on a low-power audio protocol and a second link based on a hands-free protocol, monitoring a closing data packet transmitted in the first link, wherein the closing data packet is used for indicating that audio sharing data packets are stopped being transmitted in the first link within an affiliated equal time interval;

when the closing data packet transmitted in the first link is monitored, determining a remaining time period, wherein the remaining time period is a time period remaining in an equal time interval to which the closing data packet belongs;

and transmitting the voice call data packet through the second link in the remaining time period.

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