KR20240054132A - Electronic device and method for transmitting and/or receiving data according to configuration change in electronic device - Google Patents

Abstract

According to one embodiment, the electronic device (101 in FIG. 1; 300 in FIG. 3) includes a communication circuit (190 in FIG. 1) and at least one processor (FIG. Includes 1 of 120). The at least one processor (120 in FIG. 1) is configured to allow the electronic device (101 in FIG. 1; 300 in FIG. 3) to transmit and/or receive data with an external electronic device through a connected isochronous stream (CIS), and If it is necessary to change the size of data to be transmitted and/or received, CIS setting information including at least one parameter value that is changed based on the size or format of the data to be transmitted and/or received can be set. The at least one processor (120 in FIG. 1) may control the transmission of the CIS setting information including the at least one parameter value to an external electronic device through the communication circuit (190 in FIG. 1). The at least one processor (120 in FIG. 1) may receive a response message for the CIS setting information from the external electronic device through the communication circuit (190 in FIG. 1). The at least one processor (120 in FIG. 1) may transmit and/or receive data with the external electronic device based on the CIS setting information.

Description

Electronic devices and methods of transmitting and/or receiving data based on changing settings in an electronic device {ELECTRONIC DEVICE AND METHOD FOR TRANSMITTING AND/OR RECEIVING DATA ACCORDING TO CONFIGURATION CHANGE IN ELECTRONIC DEVICE}

Various embodiments of the present disclosure relate to a method for an electronic device to transmit and/or receive data with an external electronic device using BLE (Bluetooth low energy) communication.

LE (low energy) electronic devices of Bluetooth Core Version 5.2 or higher can support LE audio services through the broadcast isochronous stream (BIS) method or the connected isochronous stream (CIS) method.

In general, LE audio services through the BIS method or CIS method are mainly used in video/audio electronic devices that can be contacted by multiple users, and are used as audio/video services for multiple users for a long time. Recently, in TVs or mobile electronic devices, the use of LE audio services through the BIS method or CIS method is gradually expanding for the purpose of simultaneously providing audio services to a small group of users rather than an unspecified number of users.

However, when an electronic device transmits audio data to another electronic device through the LE audio service, if the size of the data to be transmitted or received changes, the need to dynamically change the settings for the BIS method or CIS method is emerging.

According to one embodiment, an electronic device includes a communication circuit and at least one processor operatively connected to the communication circuit. The at least one processor is configured to, if the electronic device is set to transmit and/or receive data with an external electronic device through a connected isochronous stream (CIS) and the size or format of the data to be transmitted and/or received needs to be changed, the CIS setting information including at least one parameter value that changes based on the size or format of data to be transmitted and/or received can be set. The at least one processor may control transmission of the CIS setting information including the at least one parameter value to an external electronic device through the communication circuit. The at least one processor may receive a response message for the CIS setting information from the external electronic device through the communication circuit. The at least one processor may transmit and/or receive data with the external electronic device based on the CIS setting information.

According to one embodiment, an electronic device includes a communication circuit and at least one processor operatively connected to the communication circuit. When the electronic device is set to transmit and/or receive data with an external electronic device through a connected isochronous stream (CIS), the at least one processor may determine the size of data to be transmitted and/or received through the communication circuit, or CIS setting information including at least one parameter value that changes based on format may be received from the external electronic device. The at least one processor may control transmission of a response message for the CIS setting information to the external electronic device through the communication circuit. The at least one processor may transmit and/or receive data with the external electronic device based on the CIS setting information.

According to one embodiment, a method of an electronic device includes setting the electronic device to transmit and/or receive data with an external electronic device through a connected isochronous stream (CIS) and changing the size or format of data to be transmitted and/or received. If necessary, it may include setting CIS setting information including at least one parameter value that changes based on the size or format of the data to be transmitted and/or received. The method of the electronic device may include transmitting the CIS setting information including the at least one parameter value to an external electronic device. The method of the electronic device may include receiving a response message for the CIS setting information from the external electronic device. The method of the electronic device may include transmitting and/or receiving data with the external electronic device based on the CIS setting information.

According to one embodiment, a method of an electronic device includes, when the electronic device is set to transmit and/or receive data with an external electronic device through a connected isochronous stream (CIS), the size or format of data to be transmitted and/or received. It may include receiving CIS setting information including at least one parameter value that changes based on the external electronic device. The method of the electronic device may include transmitting a response message for the CIS setting information to the external electronic device. The method of the electronic device may include transmitting and/or receiving data with the external electronic device based on the CIS setting information.

According to one embodiment, a storage medium storing at least one computer-readable instruction may be provided. When executed by at least one processor, the at least one instruction may cause the electronic device to perform a plurality of operations. The plurality of operations may be performed when the electronic device is set to transmit and/or receive data with an external electronic device through a connected isochronous stream (CIS) and the size or format of data to be transmitted and/or received needs to be changed. and/or setting CIS setting information including at least one parameter value that changes based on the size or format of data to be received. The plurality of operations may include transmitting the CIS setting information including the at least one parameter value to an external electronic device. The plurality of operations may include receiving a response message for the CIS setting information from the external electronic device. The plurality of operations may include transmitting and/or receiving data with the external electronic device based on the CIS setting information.

According to one embodiment, a storage medium storing at least one computer-readable instruction may be provided. When executed by at least one processor, the at least one instruction may cause the electronic device to perform a plurality of operations. The plurality of operations may be at least changed based on the size or format of data to be transmitted and/or received when the electronic device is set to transmit and/or receive data with an external electronic device through a connected isochronous stream (CIS). It may include receiving CIS setting information including one parameter value from the external electronic device. The plurality of operations may include transmitting a response message for the CIS setting information to the external electronic device. The plurality of operations may include transmitting and/or receiving data with the external electronic device based on the CIS setting information.

1 is a block diagram schematically showing an electronic device in a network environment according to an embodiment.
Figure 2 is a block diagram of an audio module according to one embodiment.
Figure 3 shows an example of operation of a plurality of electronic devices according to an embodiment.
Figure 4 shows an example of a CIS event of two consecutive CIS sub-events according to one embodiment.
Figure 5 shows an example of a CIS event according to an embodiment.
Figure 6 shows an example of transmitting and/or receiving packets between an electronic device and an external electronic device in a plurality of CIS events according to an embodiment.
Figure 7 is a diagram for explaining a BIG event and a BIS event according to an embodiment.
Figure 8A shows an example of BISs with a sequential arrangement according to one embodiment.
FIG. 8B shows an example of BISs with an interleaved arrangement according to one embodiment.
FIG. 9 is a flowchart illustrating a method of operating an electronic device that requests a setting change according to an embodiment of the present disclosure.
FIG. 10 is a flowchart illustrating a method of operating an electronic device that receives a setting change request according to an embodiment of the present disclosure.
Figure 11 shows an example of transmitting and/or receiving packets between an electronic device and an external electronic device in a plurality of CIS events according to an embodiment of the present disclosure.
Figure 12 shows another example of transmitting and/or receiving packets between an electronic device and an external electronic device in a plurality of CIS events according to an embodiment of the present disclosure.
Figure 13 shows another example of transmitting and/or receiving packets between an electronic device and an external electronic device in a plurality of CIS events according to an embodiment of the present disclosure.
FIG. 14 is a flowchart for explaining a method of operating an electronic device according to an embodiment of the present disclosure.

Hereinafter, an embodiment of the present disclosure will be described in detail with reference to the attached drawings. Also, in describing an embodiment of the present disclosure, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of an embodiment of the present disclosure, the detailed description will be omitted. In addition, the terms described below are terms defined in consideration of functions in an embodiment of the present disclosure, and may vary depending on the intention or custom of the user or operator. Therefore, the definition should be made based on the contents throughout this specification.

It should be noted that the technical terms used in this specification are only used to describe specific embodiments and are not intended to limit one embodiment of the present disclosure. Alternatively, technical terms used in this specification, unless specifically defined in a different way in this specification, should be interpreted as meanings commonly understood by those skilled in the art to which this disclosure pertains, and may not be overly inclusive. It should not be interpreted in a literal or excessively reduced sense. Alternatively, if the technical terms used in this specification are incorrect technical terms that do not accurately express the idea of the present disclosure, they should be replaced with technical terms that can be correctly understood by those skilled in the art. Alternatively, general terms used in an embodiment of the present disclosure should be interpreted as defined in a dictionary or according to the context, and should not be interpreted in an excessively reduced sense.

Alternatively, as used herein, singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, terms such as “consists of” or “includes” should not be construed as necessarily including all of the various components or operations described in the specification, and some of the components or operations may include It may not be included, or it may be interpreted as including additional components or operations.

Alternatively, terms including ordinal numbers, such as first, second, etc., used in this specification may be used to describe various components, but the components should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, a first component may be referred to as a second component, and similarly, the second component may also be referred to as the first component without departing from the scope of the present disclosure.

When a component is referred to as being “connected” or “connected” to another component, it may be directly connected to or connected to the other component, but other components may also exist in between. On the other hand, when it is mentioned that a component is “directly connected” or “directly connected” to another component, it should be understood that there are no other components in between.

Hereinafter, an embodiment according to the present disclosure will be described in detail with reference to the attached drawings. However, identical or similar components will be assigned the same reference numerals regardless of reference numerals, and duplicate descriptions thereof will be omitted. Alternatively, when describing an embodiment of the present disclosure, if it is determined that a detailed description of a related known technology may obscure the gist of the present disclosure, the detailed description will be omitted. Alternatively, it should be noted that the attached drawings are only intended to facilitate easy understanding of the spirit of the present disclosure, and should not be construed as limiting the spirit of the present disclosure by the attached drawings. The spirit of the present disclosure should be construed as extending to all changes, equivalents, and substitutes other than the attached drawings.

FIG. 1 is a block diagram schematically showing an electronic device 101 in a network environment 100 according to an embodiment.

Referring to FIG. 1, in the network environment 100, the electronic device 101 communicates with the electronic device 102 through a first network 198 (e.g., a short-range wireless communication network) or a second network 199. It is possible to communicate with the electronic device 104 or the server 108 through (e.g., a long-distance wireless communication network). According to one embodiment, the electronic device 101 may communicate with the electronic device 104 through the server 108. According to one embodiment, the electronic device 101 includes a processor 120, a memory 130, an input module 150, an audio output module 155, a display module 160, an audio module 170, and a sensor module ( 176), interface 177, connection terminal 178, haptic module 179, camera module 180, power management module 188, battery 189, communication module 190, subscriber identification module 196 , or may include an antenna module 197. According to one embodiment, at least one of these components (eg, the connection terminal 178) may be omitted or one or more other components may be added to the electronic device 101. In some embodiments, some of these components (e.g., sensor module 176, camera module 180, or antenna module 197) are integrated into one component (e.g., display module 160). It can be.

The processor 120, for example, executes software (e.g., program 140) to operate at least one other component (e.g., hardware or software component) of the electronic device 101 connected to the processor 120. It can be controlled and various data processing or calculations can be performed. According to one embodiment, as at least part of data processing or computation, the processor 120 stores commands or data received from another component (e.g., sensor module 176 or communication module 190) in volatile memory 132. The commands or data stored in the volatile memory 132 can be processed, and the resulting data can be stored in the non-volatile memory 134. According to one embodiment, the processor 120 includes a main processor 121 (e.g., a central processing unit or an application processor) or an auxiliary processor 123 that can operate independently or together (e.g., a graphics processing unit, a neural network processing unit ( It may include a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor). For example, if the electronic device 101 includes a main processor 121 and a secondary processor 123, the secondary processor 123 may be set to use lower power than the main processor 121 or be specialized for a designated function. You can. The auxiliary processor 123 may be implemented separately from the main processor 121 or as part of it.

The auxiliary processor 123 may, for example, act on behalf of the main processor 121 while the main processor 121 is in an inactive (e.g., sleep) state, or while the main processor 121 is in an active (e.g., application execution) state. ), together with the main processor 121, at least one of the components of the electronic device 101 (e.g., the display module 160, the sensor module 176, or the communication module 190) At least some of the functions or states related to can be controlled. According to one embodiment, co-processor 123 (e.g., image signal processor or communication processor) may be implemented as part of another functionally related component (e.g., camera module 180 or communication module 190). there is. According to one embodiment, the auxiliary processor 123 (eg, neural network processing device) may include a hardware structure specialized for processing artificial intelligence models. Artificial intelligence models can be created through machine learning. For example, such learning may be performed in the electronic device 101 itself, where artificial intelligence is performed, or may be performed through a separate server (e.g., server 108). Learning algorithms may include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but It is not limited. An artificial intelligence model may include multiple artificial neural network layers. Artificial neural networks include deep neural network (DNN), convolutional neural network (CNN), recurrent neural network (RNN), restricted boltzmann machine (RBM), belief deep network (DBN), bidirectional recurrent deep neural network (BRDNN), It may be one of deep Q-networks or a combination of two or more of the above, but is not limited to the examples described above. In addition to hardware structures, artificial intelligence models may additionally or alternatively include software structures.

The memory 130 may store various data used by at least one component (eg, the processor 120 or the sensor module 176) of the electronic device 101. Data may include, for example, input data or output data for software (e.g., program 140) and instructions related thereto. Memory 130 may include volatile memory 132 or non-volatile memory 134.

The program 140 may be stored as software in the memory 130 and may include, for example, an operating system 142, middleware 144, or application 146.

The input module 150 may receive commands or data to be used in a component of the electronic device 101 (e.g., the processor 120) from outside the electronic device 101 (e.g., a user). The input module 150 may include, for example, a microphone, mouse, keyboard, keys (eg, buttons), or digital pen (eg, stylus pen).

The sound output module 155 may output sound signals to the outside of the electronic device 101. The sound output module 155 may include, for example, a speaker or a receiver. Speakers can be used for general purposes such as multimedia playback or recording playback. The receiver can be used to receive incoming calls. According to one embodiment, the receiver may be implemented separately from the speaker or as part of it.

The display module 160 can visually provide information to the outside of the electronic device 101 (eg, a user). The display module 160 may include, for example, a display, a hologram device, or a projector, and a control circuit for controlling the device. According to one embodiment, the display module 160 may include a touch sensor configured to detect a touch, or a pressure sensor configured to measure the intensity of force generated by the touch.

The audio module 170 can convert sound into an electrical signal or, conversely, convert an electrical signal into sound. According to one embodiment, the audio module 170 acquires sound through the input module 150, the sound output module 155, or an external electronic device (e.g., directly or wirelessly connected to the electronic device 101). Sound may be output through the electronic device 102 (e.g., speaker or headphone).

The sensor module 176 detects the operating state (e.g., power or temperature) of the electronic device 101 or the external environmental state (e.g., user state) and generates an electrical signal or data value corresponding to the detected state. can do. According to one embodiment, the sensor module 176 includes, for example, a gesture sensor, a gyro sensor, an air pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, It may include a temperature sensor, humidity sensor, or light sensor.

The interface 177 may support one or more designated protocols that can be used to connect the electronic device 101 directly or wirelessly with an external electronic device (eg, the electronic device 102). According to one embodiment, the interface 177 may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

The connection terminal 178 may include a connector through which the electronic device 101 can be physically connected to an external electronic device (eg, the electronic device 102). According to one embodiment, the connection terminal 178 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (eg, a headphone connector).

The haptic module 179 can convert electrical signals into mechanical stimulation (e.g., vibration or movement) or electrical stimulation that the user can perceive through tactile or kinesthetic senses. According to one embodiment, the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

The camera module 180 can capture still images and moving images. According to one embodiment, the camera module 180 may include one or more lenses, image sensors, image signal processors, or flashes.

The power management module 188 can manage power supplied to the electronic device 101. According to one embodiment, the power management module 188 may be implemented as at least a part of, for example, a power management integrated circuit (PMIC).

The battery 189 may supply power to at least one component of the electronic device 101. According to one embodiment, the battery 189 may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

Communication module 190 is configured to provide a direct (e.g., wired) communication channel or wireless communication channel between electronic device 101 and an external electronic device (e.g., electronic device 102, electronic device 104, or server 108). It can support establishment and communication through established communication channels. Communication module 190 operates independently of processor 120 (e.g., an application processor) and may include one or more communication processors that support direct (e.g., wired) communication or wireless communication. According to one embodiment, the communication module 190 may be a wireless communication module 192 (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 194 (e.g., : LAN (local area network) communication module, or power line communication module) may be included. Among these communication modules, the corresponding communication module is a first network 198 (e.g., a short-range communication network such as Bluetooth, Wi-Fi (wireless fidelity) direct, or IrDA (infrared data association)) or a second network 199. It may communicate with an external electronic device 104 through (e.g., a legacy cellular network, a 5G network, a next-generation communication network, the Internet, or a long-distance communication network such as a computer network (e.g., LAN or WAN)). These various types of communication modules may be integrated into one component (e.g., a single chip) or may be implemented as a plurality of separate components (e.g., multiple chips). The wireless communication module 192 uses subscriber information (e.g., International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module 196 within a communication network such as the first network 198 or the second network 199. The electronic device 101 can be confirmed or authenticated.

The wireless communication module 192 may support 5G networks after 4G networks and next-generation communication technologies, for example, NR access technology (new radio access technology). NR access technology provides high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and access to multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low latency). -latency communications)) can be supported. The wireless communication module 192 may support high frequency bands (eg, mmWave bands), for example, to achieve high data rates. The wireless communication module 192 uses various technologies to secure performance in high frequency bands, for example, beamforming, massive array multiple-input and multiple-output (MIMO), and full-dimensional multiplexing. It can support technologies such as input/output (FD-MIMO: full dimensional MIMO), array antenna, analog beam-forming, or large scale antenna. The wireless communication module 192 may support various requirements specified in the electronic device 101, an external electronic device (e.g., electronic device 104), or a network system (e.g., second network 199). According to one embodiment, the wireless communication module 192 supports Peak data rate (e.g., 20 Gbps or more) for realizing eMBB, loss coverage (e.g., 164 dB or less) for realizing mmTC, or U-plane latency (e.g., 164 dB or less) for realizing URLLC. Example: Downlink (DL) and uplink (UL) each of 0.5 ms or less, or round trip 1 ms or less) can be supported.

The antenna module 197 may transmit or receive signals or power to or from the outside (eg, an external electronic device). According to one embodiment, the antenna module 197 may include an antenna including a radiator made of a conductor or a conductive pattern formed on a substrate (eg, PCB). According to one embodiment, the antenna module 197 may include a plurality of antennas (eg, an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network such as the first network 198 or the second network 199 is connected to the plurality of antennas by, for example, the communication module 190. can be selected. Signals or power may be transmitted or received between the communication module 190 and an external electronic device through the at least one selected antenna. According to some embodiments, in addition to the radiator, other components (eg, radio frequency integrated circuit (RFIC)) may be additionally formed as part of the antenna module 197.

According to one embodiment, the antenna module 197 may form a mmWave antenna module. According to one embodiment, a mmWave antenna module includes: a printed circuit board, an RFIC disposed on or adjacent to a first side (e.g., bottom side) of the printed circuit board and capable of supporting a designated high frequency band (e.g., mmWave band); and a plurality of antennas (e.g., array antennas) disposed on or adjacent to the second side (e.g., top or side) of the printed circuit board and capable of transmitting or receiving signals in the designated high frequency band. You can.

At least some of the components are connected to each other through a communication method between peripheral devices (e.g., bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)) and signal ( (e.g. commands or data) can be exchanged with each other.

According to one embodiment, commands or data may be transmitted or received between the electronic device 101 and the external electronic device 104 through the server 108 connected to the second network 199. Each of the external electronic devices 102 or 104 may be of the same or different type as the electronic device 101. According to one embodiment, all or part of the operations performed in the electronic device 101 may be executed in one or more of the external electronic devices 102, 104, or 108. For example, when the electronic device 101 must perform a certain function or service automatically or in response to a request from a user or another device, the electronic device 101 may perform the function or service instead of executing the function or service on its own. Alternatively, or additionally, one or more external electronic devices may be requested to perform at least part of the function or service. One or more external electronic devices that have received the request may execute at least part of the requested function or service, or an additional function or service related to the request, and transmit the result of the execution to the electronic device 101. The electronic device 101 may process the result as is or additionally and provide it as at least part of a response to the request. For this purpose, for example, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology can be used. The electronic device 101 may provide an ultra-low latency service using, for example, distributed computing or mobile edge computing. In one embodiment, the external electronic device 104 may include an Internet of Things (IoT) device. Server 108 may be an intelligent server using machine learning and/or neural networks. According to one embodiment, the external electronic device 104 or server 108 may be included in the second network 199. The electronic device 101 may be applied to intelligent services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology and IoT-related technology.

An electronic device according to an embodiment of the present disclosure may be of various types. Electronic devices may include, for example, portable communication devices (e.g., smartphones), computer devices, portable multimedia devices, portable medical devices, cameras, wearable devices, home appliance devices, or wireless earphones or ear buds. You can. Electronic devices according to embodiments of the present disclosure are not limited to the above-described devices.

An embodiment of this document and the terms used herein are not intended to limit the technical features described in this document to specific embodiments, and should be understood to include various changes, equivalents, or substitutes for the embodiment. In connection with the description of the drawings, similar reference numbers may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of the above items, unless the relevant context clearly indicates otherwise. As used herein, “A or B”, “at least one of A and B”, “at least one of A or B”, “A, B or C”, “at least one of A, B and C”, and “A Each of phrases such as “at least one of , B, or C” may include any one of the items listed together in the corresponding phrase, or any possible combination thereof. Terms such as "first", "second", or "first" or "second" may be used simply to distinguish one component from another, and to refer to those components in other respects (e.g., importance or order) is not limited. One (e.g., first) component is said to be “coupled” or “connected” to another (e.g., second) component, with or without the terms “functionally” or “communicatively.” When mentioned, it means that any of the components can be connected to the other components directly (e.g. wired), wirelessly, or through a third component.

The term “module” used in one embodiment of this document may include a unit implemented in hardware, software, or firmware, and may be interchangeable with terms such as logic, logic block, component, or circuit, for example. can be used A module may be an integrated part or a minimum unit of the parts or a part thereof that performs one or more functions. For example, according to one embodiment, the module may be implemented in the form of an application-specific integrated circuit (ASIC).

One embodiment of the present document is one or more instructions stored in a storage medium (e.g., built-in memory 136 or external memory 138) that can be read by a machine (e.g., electronic device 101). It may be implemented as software (e.g., program 140) including these. For example, a processor (e.g., processor 120) of a device (e.g., electronic device 101) may call at least one command among one or more commands stored from a storage medium and execute it. This allows the device to be operated to perform at least one function according to the at least one instruction called. The one or more instructions may include code generated by a compiler or code that can be executed by an interpreter. A storage medium that can be read by a device may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' only means that the storage medium is a tangible device and does not contain signals (e.g. electromagnetic waves). This term refers to cases where data is stored semi-permanently in the storage medium. There is no distinction between temporary storage cases.

According to one embodiment, a method according to an embodiment disclosed in this document may be provided and included in a computer program product. Computer program products are commodities and can be traded between sellers and buyers. The computer program product may be distributed in the form of a machine-readable storage medium (e.g. compact disc read only memory (CD-ROM)), or through an application store (e.g. Play Store ^TM ) or on two user devices (e.g. It can be distributed (e.g. downloaded or uploaded) directly between smart phones) or online. In the case of online distribution, at least a portion of the computer program product may be at least temporarily stored or temporarily created in a machine-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or a relay server.

According to one embodiment, each component (e.g., module or program) of the above-described components may include a single or multiple entities, and some of the multiple entities may be separately placed in other components. . According to one embodiment, one or more of the above-described corresponding components or operations may be omitted, or one or more other components or operations may be added. Alternatively or additionally, multiple components (eg, modules or programs) may be integrated into a single component. In this case, the integrated component may perform one or more functions of each component of the plurality of components identically or similarly to those performed by the corresponding component of the plurality of components prior to the integration. . According to one embodiment, operations performed by a module, program, or other component may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or , or one or more other operations may be added.

Figure 2 is a block diagram 200 of the audio module 170, according to one embodiment. Referring to FIG. 2, the audio module 170 includes, for example, an audio input interface 210, an audio input mixer 220, an analog to digital converter (ADC) 230, an audio signal processor 240, and a DAC. (digital to analog converter) 250, an audio output mixer 260, or an audio output interface 270.

The audio input interface 210 is a part of the input module 150 or is configured separately from the electronic device 101 to obtain audio from the outside of the electronic device 101 through a microphone (e.g., dynamic microphone, condenser microphone, or piezo microphone). An audio signal corresponding to sound can be received. For example, when an audio signal is acquired from an external electronic device 102 (e.g., a headset or microphone), the audio input interface 210 is directly connected to the external electronic device 102 through the connection terminal 178. , or the audio signal can be received by connecting wirelessly (e.g., Bluetooth communication) through the wireless communication module 192. According to one embodiment, the audio input interface 210 may receive a control signal (eg, a volume adjustment signal received through an input button) related to the audio signal obtained from the external electronic device 102. The audio input interface 210 includes a plurality of audio input channels and can receive different audio signals for each corresponding audio input channel among the plurality of audio input channels. According to one embodiment, additionally or alternatively, the audio input interface 210 may receive an audio signal from another component of the electronic device 101 (eg, the processor 120 or the memory 130).

The audio input mixer 220 may synthesize a plurality of input audio signals into at least one audio signal. For example, according to one embodiment, the audio input mixer 220 may synthesize a plurality of analog audio signals input through the audio input interface 210 into at least one analog audio signal.

The ADC 230 can convert analog audio signals into digital audio signals. For example, according to one embodiment, the ADC 230 converts the analog audio signal received through the audio input interface 210, or additionally or alternatively, the analog audio signal synthesized through the audio input mixer 220 into a digital audio signal. It can be converted into a signal.

The audio signal processor 240 may perform various processing on a digital audio signal input through the ADC 230 or a digital audio signal received from another component of the electronic device 101. For example, according to one embodiment, the audio signal processor 240 may change the sampling rate, apply one or more filters, process interpolation, amplify or attenuate all or part of the frequency band, and You can perform noise processing (e.g., noise or echo attenuation), change channels (e.g., switch between mono and stereo), mix, or extract specified signals. According to one embodiment, one or more functions of the audio signal processor 240 may be implemented in the form of an equalizer.

The DAC 250 can convert digital audio signals into analog audio signals. For example, according to one embodiment, DAC 250 may process digital audio signals processed by audio signal processor 240, or other components of electronic device 101 (e.g., processor 120 or memory 130). The digital audio signal obtained from )) can be converted to an analog audio signal.

The audio output mixer 260 may synthesize a plurality of audio signals to be output into at least one audio signal. For example, according to one embodiment, the audio output mixer 260 may output an audio signal converted to analog through the DAC 250 and another analog audio signal (e.g., an analog audio signal received through the audio input interface 210). ) can be synthesized into at least one analog audio signal.

The audio output interface 270 transmits the analog audio signal converted through the DAC 250, or additionally or alternatively, the analog audio signal synthesized by the audio output mixer 260 through the electronic device 101 through the audio output module 155. ) can be output outside of. The sound output module 155 may include, for example, a speaker such as a dynamic driver or balanced armature driver, or a receiver. According to one embodiment, the sound output module 155 may include a plurality of speakers. In this case, the audio output interface 270 may output audio signals having a plurality of different channels (eg, stereo or 5.1 channels) through at least some of the speakers. According to one embodiment, the audio output interface 270 is connected to the external electronic device 102 (e.g., external speaker or headset) directly through the connection terminal 178 or wirelessly through the wireless communication module 192. and can output audio signals.

According to one embodiment, the audio module 170 does not have a separate audio input mixer 220 or an audio output mixer 260, but uses at least one function of the audio signal processor 240 to generate a plurality of digital audio signals. At least one digital audio signal can be generated by synthesizing them.

According to one embodiment, the audio module 170 is an audio amplifier (not shown) capable of amplifying an analog audio signal input through the audio input interface 210 or an audio signal to be output through the audio output interface 270. (e.g., speaker amplification circuit) may be included. According to one embodiment, the audio amplifier may be composed of a module separate from the audio module 170.

Various embodiments of the present disclosure relate to a method for an electronic device to transmit and/or receive audio data with an external electronic device using Bluetooth Low Energy (or BLE) communication. Electronic devices of Bluetooth Core Version 5.2 or higher are connected to CIS (connected devices). Audio services can be supported through an isochronous stream (IS) method or a broadcast isochronous stream (BIS) method.

When supporting audio service through the CIS method, the electronic device connects a CIS link to transmit audio data to an external electronic device using BLE communication, and the settings at the time of CIS link connection are fixed until the CIS link is disconnected. do. When supporting an audio service through the BIS method, the electronic device can broadcast audio data for the external electronic device without connecting a communication link with the external electronic device.

Figure 3 shows an example of operation of a plurality of electronic devices according to an embodiment.

Referring to FIG. 3, the first electronic device 300 (e.g., the electronic device 101 of FIG. 1) is implemented as a portable communication device (e.g., a smartphone), and the second electronic devices 310 and 311 are used by the user. is implemented as a pair of wireless earphones worn on each of the user's left and right ears, and the third electronic device 320, 321 is implemented as a pair of wireless earphones worn on each of the user's left and right ears, 4 The electronic devices 330 and 331 may be implemented as a pair of wireless earphones worn on each of the user's left and right ears. According to one embodiment, the first electronic device 300 may transmit and/or receive signals and/or data with the second electronic devices 310 and 311. According to one embodiment, the first electronic device 300 may transmit and/or receive signals and/or data with the third electronic devices 320 and 321. According to one embodiment, the first electronic device 300 may transmit and/or receive signals and/or data with the fourth electronic devices 330 and 331.

When supporting an audio service through the CIS method, the first electronic device 300 uses wireless communication (e.g., BLE communication) to communicate with the second electronic devices 310 and 311 and the third electronic devices 320 and 321. ), and at least one of the fourth electronic devices 330 and 331 can be recognized. At least one of the second electronic devices 310 and 311, the third electronic devices 320 and 321, and the fourth electronic devices 330 and 331 may transmit an advertising signal in a broadcast manner. When the first electronic device 300 receives an advertising signal, the second electronic devices 310 and 311, the third electronic devices 320 and 321, and the fourth electronic device use the information included in the advertising signal. A communication link may be connected to at least one of the electronic devices 330 and 331. At least one of the second electronic devices 310 and 311, the third electronic devices 320 and 321, and the fourth electronic devices 330 and 331 receives audio data from the first electronic device 300 using a connected communication link. can receive.

When supporting an audio service through the BIS method, the first electronic device 300 broadcasts audio data through the BIS method, and the second electronic devices 310 and 311, the third electronic devices 320 and 321, and At least one of the fourth electronic devices 330 and 331 may receive audio data broadcast from the first electronic device 300. The first electronic device 300 may broadcast setting information necessary for other electronic devices to receive audio data. At least one of the second electronic devices 310 and 311, the third electronic devices 320 and 321, and the fourth electronic devices 330 and 331 is configured based on the setting information broadcast from the first electronic device 300. Audio data can be received from the first electronic device 300.

Figure 4 shows an example of a CIS event of two consecutive CIS sub-events according to one embodiment.

CIS is an external electronic device (e.g., electronic device 102 or electronic device 104 in FIG. 1; second electronic device 310, 311, third electronic device 320, 321, or fourth electronic device in FIG. 3). Allows an electronic device (e.g., electronic device 101 in FIG. 1; electronic device 300 in FIG. 3) connected to the devices 330 and 331 to transmit isochronous data unidirectionally and/or bidirectionally. It means logical transmission. Isochronous data can be transmitted on LE-S or LE-F logical links using CIS logical transport, and each CIS can be connected with an LE asynchronous connection (LE ACL). CIS may support transmission of variable-size packets and/or one or more packets in each CIS event.

Referring to FIG. 4, a CIS event may include two CIS sub-events consisting of Sub_Interval. Sub_Interval refers to the interval between consecutive sub-events within a CIS event. The time interval allocated to each CIS sub-event may also be called SE_Length, and Sub_Interval and SE_Length may be the same value. According to one embodiment, Sub_Interval is defined as a preset time interval, and each Sub_Interval may consist of the same time slot. According to one embodiment, Sub_Interval is defined as a variable time interval, and each Sub_Interval may be composed of a variable time slot.

In a sub-event within a CIS event, an electronic device (e.g., electronic device 101 in Figure 1; electronic device 300 in Figure 3) is connected to an external electronic device (e.g., electronic device 102 or electronic device 104 in Figure 1). ); the first packet (M>S) may be transmitted to the second electronic device (310, 311), third electronic device (320, 321), or fourth electronic device (330, 331) of FIG. The external electronic device may transmit a second packet (S>M) to the electronic device. An electronic device can play the role of a master device when communicating based on the CIS method, and an external electronic device can play the role of a slave device when communicating based on the CIS method. . “M>S” indicated on the packet refers to the directionality of the packet transmitted from the master device to the slave device, and “S<M” indicated on the packet refers to the directionality of the packet transmitted from the slave device to the master device.

The time interval between the first packet (M>S) and the second packet (S>M) transmitted in the CIS sub-event can be defined as T_IFS (inter frame space), and the last packet (S>M) in the CIS sub-event ) and the first packet (M>S) transmitted in the next CIS sub-event can be set to T_MSS (minimum subevent space) or more. According to one embodiment, the minimum time interval between packets transmitted in one CIS sub-event may be set to T_IFS, and the minimum time interval between the last packet in the current CIS sub-event and the first packet transmitted in the next CIS sub-event may be set to T_IFS. It can be set to T_MSS.

Figure 5 shows an example of a CIS event according to an embodiment.

Referring to FIG. 5, CIS event x in ISO_Interval has NSE=4 (Subevent1~4), and the subevents in which actual packets are transmitted can be composed of three (Subevent1~3). NSE is the number of subevents per CIS in each CIS event. ISO_Interval is the time interval between CIS anchor points (or the time between anchor points of adjacent CIS).

In the subevents (Subevent1 to 3) within the CIS Event ; the second electronic device 310, 311, the third electronic device 320, 321, or the fourth electronic device 330, 331 in FIG. 3 is an electronic device (e.g., the electronic device 101 in FIG. 1; An “S>M” packet can be transmitted to the electronic device 300 of FIG. 3. An electronic device can play the role of a master device when communicating based on the CIS method, and an external electronic device can play the role of a slave device when communicating based on the CIS method. . “M>S” indicated on the packet refers to the directionality of the packet transmitted from the master device to the slave device, and “S<M” indicated on the packet refers to the directionality of the packet transmitted from the slave device to the master device.

In the first sub-event (Subevent1), the 1-1 packet (M>S) and the 1-2 packet (S>M) may be transmitted. According to one embodiment, the time interval occupied by the 1-1 packet (M>S) in the first subevent (Subevent1) may be set to be the same as the time interval occupied by the 1-2 packet (S>M). . According to one embodiment, the time interval occupied by the 1-1 packet (M>S) in the first sub-event (Subevent1) may be set differently from the time interval occupied by the 1-2 packet (S>M).

In the second sub-event (Subevent2), the 2-1 packet (M>S) and the 2-2 packet (S>M) may be transmitted. According to one embodiment, the time interval occupied by the 2-1 packet (M>S) in the second sub-event (Subevent2) may be set to be the same as the time interval occupied by the 2-2 packet (S>M). . According to one embodiment, the time interval occupied by the 2-1 packet (M>S) in the second sub-event (Subevent2) may be set differently from the time interval occupied by the 2-2 packet (S>M).

In the third sub-event (Subevent3), the 3-1 packet (M>S) and the 3-2 packet (S>M) may be transmitted. According to one embodiment, the time interval occupied by the 3-1 packet (M>S) in the third sub-event (Subevent3) may be set to be the same as the time interval occupied by the 3-2 packet (S>M). . According to one embodiment, the time interval occupied by the 3-1 packet (M>S) in the third sub-event (Subevent3) may be set differently from the time interval occupied by the 3-2 packet (S>M).

Figure 6 shows an example of transmitting and/or receiving packets between an electronic device and an external electronic device in a plurality of CIS events according to an embodiment.

In sub-events within a CIS event, an electronic device can play the role of a master device when communicating based on the CIS method, and an external electronic device can play the role of a slave device when communicating based on the CIS method. (role) can be performed.

Referring to FIG. 6, the first CIS event (CIS event 1) in the ISO Interval may include a first sub-event (subevent1), a second sub-event (subevent2), and a third sub-event (subevent3). In the first subevent1, an electronic device (e.g., the electronic device 101 of FIG. 1; the electronic device 300 of FIG. 3) is connected to an external electronic device (e.g., the electronic device 102 of FIG. 1 or the electronic device (e.g., the electronic device 102 of FIG. 1). 104); the 1-1 packet may be transmitted to the second electronic device 310, 311, third electronic device 320, 321, or fourth electronic device 330, 331 of FIG. 3, and the external electronic device The device may transmit the first and second packets to the electronic device. According to one embodiment, the first time interval (t1) occupied by the packet transmitted from the electronic device to the external electronic device in the time interval (t3) occupied by the first sub-event (subeven1) is the time interval (t1) occupied by the packet transmitted by the external electronic device to the electronic device. It may be set to be the same as the second time interval (t2) occupied by the packet. In the second subevent (subevent2), the electronic device may transmit packet 2-1 to the external electronic device, and the external electronic device may transmit packet 2-2 to the electronic device. In the third subevent (subevent3), the electronic device may transmit the 3-1 packet to the external electronic device, and the external electronic device may transmit the 3-2 packet to the electronic device.

The second CIS event in the ISO Interval may include the fourth sub-event (subevent4), the fifth sub-event (subevent5), and the sixth sub-event (subevent6). In the fourth subevent (subevent4), the electronic device may transmit the 4-1 packet to the external electronic device, and the external electronic device may transmit the 4-2 packet to the electronic device. According to one embodiment, the third time interval (t5) occupied by the packet transmitted from the electronic device to the external electronic device in the time interval (t4) occupied by the fourth sub-event (subeven4) is the time interval (t5) occupied by the packet transmitted by the external electronic device to the electronic device. It may be set shorter than the fourth time interval (t6) occupied by the packet. In the fifth subevent (subevent5), the electronic device may transmit the 5-1 packet to the external electronic device, and the external electronic device may transmit the 5-2 packet to the electronic device. In the sixth sub-event (subevent6), the electronic device can transmit the 6-1 packet to the external electronic device, and the external electronic device can transmit the 6-2 packet to the electronic device. According to one embodiment, the third time interval (t5) occupied by the packet transmitted by the electronic device to the external electronic device in the second CIS event is the first time interval t5 occupied by the packet transmitted by the electronic device to the external electronic device in the first CIS event. It may be set shorter than the time interval (t1).

The third CIS event in the ISO Interval may include the 7th sub-event (subevent7), the 8th sub-event (subevent8), and the 9th sub-event (subevent9). In the seventh subevent (subevent7), the electronic device can transmit the 7-1 packet to the external electronic device, and the external electronic device can transmit the 7-2 packet to the electronic device. In the eighth subevent (subevent8), the electronic device can transmit the 8-1 packet to the external electronic device, and the external electronic device can transmit the 8-2 packet to the electronic device. In the ninth sub-event (subevent9), the electronic device can transmit the 9-1 packet to the external electronic device, and the external electronic device can transmit the 9-2 packet to the electronic device.

Figure 7 is a diagram for explaining a BIG event and a BIS event according to an embodiment.

The broadcast method can allow data to be streamed from a single source (or source electronic device) to multiple sinks (or sink electronic devices) using a group of synchronized streams. Each stream used in the broadcast method may be referred to as a BIS, and a group of BIS may be referred to as a broadcast isochronous group (BIG).

BIS logical transport is used to transmit one or more isochronous data streams to all devices for BIS within range. BIS may include one or more subevents for transmitting isochronous data packets. BIS supports transmission of multiple isochronous data packets in all BIS events.

Referring to FIG. 7, BIG event x includes BIS event x, and specific isochronous data may be transmitted within BIS event x. ISO_Interval represents the time between two adjacent BIG Anchor points, and Sub_Interval represents the time between the start of two consecutive subevents of each BIS. According to one embodiment, BIG event x may include at least one BIS event x, and BIS event x may include at least one subevent.

A BIS event consists of one or more BIS PDUs. Link Layer transmits BIS PDU only at BIG events. Link Layer transmits only BIS PDU as part of the BIG Event. Each BIG event is divided into BIS events and control subevents divided by Num_BIS. Each BIS event is divided into NSE subevents. Each BIS event starts at a moment called the BIS Anchor point and ends after the last subevent. Each BIG event starts at a moment called the BIG Anchor point and ends after the control subevent, if there is one, or at the last constituent BIS event otherwise. BIG Anchor points must be spaced regularly at ISO_Interval intervals. The BIS Anchor point for BIS n of BIG must be (n - 1) * BIS_Spacing after the BIG Anchor point, and are spaced regularly at ISO_Interval intervals. The subevents of each BIS must be spaced apart by Sub_Interval. Isochronous Broadcaster must end the BIG event at least before T_IFS at the BIG Anchor point of the next BIG event.

BIS does not have an Acknowledgment protocol, and traffic can be transmitted unidirectionally from a broadcasting device. BIS logical transport does not have Acknowledgment, and to improve transmission reliability, isochronous data packets can be retransmitted by increasing the number of subevents within every event.

BIS supports LE-S or LE-F logical links, and also supports LEB-C (low energy broadcast control) logical links. BIS can be identified by unique access address and timing information. Access address and timing information can be transmitted in packets transmitted using the associated Periodic Advertising Broadcast (PADVB) logical transport. A scanning device that supports the Synchronized Receiver role function can receive isochronous data within BIS after synchronizing to BIS using timing information from the periodic advertising train. .

Each BIS is part of a BIG, and a BIG may contain one or more BIS. Multiple BISs within the BIG have a common timing reference and are temporally synchronized based on the broadcaster. For example, the left and right channels of an audio stereo stream received by separate devices need to be rendered simultaneously. Multiple BISs within a BIG can be scheduled sequentially or in an interleaved arrangement.

In order for an electronic device to receive BIS, the Link Layer must obtain BIG information (BIGInfo) that describes the streams. BIG information (BIGInfo) can be obtained from additional controller advertising data (ACAD) of periodic advertising.

Each BIG may have the following parameters defined.

- Num_BIS is the number of BISs in BIG. BISs in BIG can each be assigned a different BIS_Number from 1 to Num_BIS.

- ISO_Interval is the time between two adjacent BIG Anchor points (for example, in units of 1.25ms). For example, the ISO_Interval value can be between 4 and 3200. (5ms ~ 4s)

- BIS_Spacing is the time between the start time of the corresponding subevent in adjacent BISs in the BIG, the start time of the first subevent of the last BIS, and the control subevent.

- Sub_Interval is the time between the start of two consecutive subevents of each BIS.

- Max_PDU is the maximum number of data octets (excluding MIC) that can be transmitted for each BIS Data PDU in BIG. For example, the Max_PDU value is between 1 and 251.

- Max_SDU is the maximum size of the SDU of this BIG. For example, the Max_SDU value is between 1 and 4095.

- MTP must be the same as the time it takes to transmit a packet containing BIS Data PDU along with a payload of Max_PDU octet in the PHY used for BIS, and assume S=8 in LE Coded PHY.

- BN, PTO, and IRC control what data is transmitted in each BIG event. The value of BN must be between 1 and 7. The value of PTO must be between 0 and 15. The value of IRC must be between 1 and 15.

- NSE is the number of subevents per BIS in each BIG event. This value must be between 1 and 31 and must be an integer multiple of BN.

- Framed indicates whether the BIG delivers framed or unframed data.

- Encrypted indicates whether the BIG is encrypted.

FIG. 8A shows an example of BIS with a sequential arrangement according to an embodiment, and FIG. 8B shows an example of BIS with an interleaved arrangement according to an embodiment.

BIS in BIG can be arranged sequentially or interleaved by appropriately setting the values of Sub_Interval and BIS_Spacing parameters. BIS subevents are an opportunity for the Isochronous Broadcaster to transmit the Broadcaster Isochronous BIS PDU and for the Synchronized Receiver to receive it.

Referring to FIG. 8A, an example is shown in which BIGs with Num_BIS=2 and NSE=2 are arranged sequentially. BIG event x contains BIS1 event x and BIS2 event x sequentially, BIS1 event x contains BIS1 Event x Subevt 1 and BIS1 Event x Subevt 2, and BIS2 event x contains BIS2 Event x Subevt 1 and BIS2 Event x Subevt May include 2. According to one embodiment, in the case of a sequential array, BIS_Spacing must be greater than or equal to NSE * Sub_Interval, so all subevents of the BIS Event can occur together.

Referring to FIG. 8b, an example is shown in which BIGs with Num_BIS=2 and NSE=2 are arranged interleaved. BIG event x may alternately include BIS1 event x and BIS2 event x. BIG event x may include BIS1 Event x Subevt 1, BIS2 Event x Subevt 1, BIS1 Event x Subevt 2, and BIS2 Event x Subevt 2 in chronological order. According to one embodiment, in the case of an intersecting array, Sub_Interval must be Num_BIS * BIS_Spacing, and the first subevent of all BISs is adjacent, then the second subevent of all BISs is adjacent, and so on. In each case it may be necessary to use the minimum value for BIS_Spacing.

Referring to FIGS. 8A and 8B, the maximum possible length for the data portion of the BIG event (excluding the control subevent) is indicated as BIG_Sync_Delay. The value of BIG_Sync_Delay may be equal to the time from the anchor point to BIG Synchronization, which is the end of the packet containing the payload of the Max_PDU octet transmitted in the last subevent.

In various embodiments of the present disclosure, when the size of audio data to be transmitted or received is changed in a situation where an electronic device transmits and/or receives data (or audio data) by creating a CIS link with an external electronic device, CIS settings We can suggest ways to change efficiently. Even if the size of data to be transmitted or received changes dynamically after the CIS link is created, Sub_Interval remains the same, so it may occupy the same Timeslot. In various embodiments of the present disclosure, CIS settings (e.g., Subevent Length (SE_Length), Subevent Interval (Sub_Interval), and/or Number of Subevent (NSE)) are changed based on the size of data (or audio data). This allows data (or audio data) to be transmitted and/or received efficiently.

Embodiments of the present disclosure, when an electronic device is set to transmit and/or receive data with an external electronic device through CIS or BIS described in FIGS. 4 to 8B, according to a change in the size or format of data to be transmitted and/or received. It relates to a technology in which an electronic device changes at least one parameter value and transmits and/or receives data by considering the changed at least one parameter value.

FIG. 9 is a flowchart illustrating a method of operating an electronic device that requests a setting change according to an embodiment of the present disclosure.

In Figure 9, the electronic device may transmit and/or receive audio data with an external electronic device through the CIS method and request a change in CIS settings from the external electronic device. For example, the electronic device may be a cell phone and the external electronic device may be implemented as wireless earphones. In one embodiment, at least one of operations 901 to 911 may be omitted, the order of some operations may be changed, or another operation may be added.

In operation 901, the electronic device may connect a first communication link (or CIS link) with an external electronic device. An electronic device can recognize an external electronic device using wireless communication (eg, BLE communication). An external electronic device may generate an advertising signal to surrounding areas in a broadcast manner. According to one embodiment, an external electronic device may generate an advertising signal according to specified conditions. For example, when power is supplied, the external electronic device may output an advertising signal based on at least one of a designated time period and a user's input.

According to one embodiment, the advertising signal is a signal (e.g., pairing) that transmits information related to a connection or account to an unspecified nearby electronic device using wireless communication (e.g., BLE communication). It can be. According to one embodiment, the advertising signal includes identification information of the external electronic device, user account information, information about whether the external electronic device is currently paired with another device (hereinafter, current pairing information), and previously paired device. list (hereinafter referred to as pairing list), information regarding devices that can be paired simultaneously (hereinafter referred to as simultaneous pairing information), TX power of the external electronic device, and/or information regarding the remaining battery capacity of the external electronic device (hereinafter referred to as battery status information). ) may include at least one of the following.

When an electronic device receives an advertising signal, it can output a user interface for connection to an external electronic device through a display. The electronic device may output a user interface according to various conditions based on information included in the advertising signal. For example, an electronic device that receives an advertising signal from an external electronic device may output a user interface including an image corresponding to the external electronic device. The electronic device may form a first communication link with an external electronic device using information included in the received advertising signal.

According to one embodiment, the external electronic device may be composed of physically distinct main earphones and secondary earphones, and the main earphones and secondary earphones may know each other's address information. According to one embodiment, when the case is opened while the main earphone and the secondary earphone are inserted into the case, the main earphone and the secondary earphone perform a page scan, and a second communication link may be formed between the main earphone and the secondary earphone.

In operation 903, the electronic device may transmit and/or receive audio data through a first communication link with an external electronic device. The electronic device may perform an operation of transmitting and/or receiving audio data when a situation such as making a call, receiving a call, or playing music occurs through a first communication link with an external electronic device. The electronic device and an external electronic device may configure a CIS to transmit and/or receive audio data. Through CIS, electronic devices can transmit and/or receive voice data isochronically to external electronic devices and various parameters (ISO_Interval, Sub_Interval, SE_Length, Max_PDU, Max_SDU, MPT _M , MPT _S , NSE, BN, and/or FT) can be set. When requesting a CIS connection, the electronic device transmits CIS parameters to the external electronic device. The structure of the CIS connection request packet is as follows.

According to one embodiment, the electronic device may broadcast audio data through a broadcast isochronous stream (BIS) without connecting the first communication link (or CIS link) with an external electronic device. BIS is part of BIG (broadcast isochronous group), and BIG can have one or more BIS. BIG can set various parameters (e.g., Num_BIS, ISO_Interval, BIS_Spacing, Sub_Interval, Max_PDU, Max_SDU, MTP, BN, PTO, IRC, and/or NSE). An external electronic device can obtain BIGInfo (or BIG information) from ACAD through periodic advertising in order to receive BIS. An external electronic device can receive audio data through BIS by checking the BIG operation method through the information included in BIGInfo.

In operation 905, when it is necessary to change the size (or format of the data) of the audio data to be transmitted and/or received, the electronic device sets the CIS settings (e.g., ISO Interval) to be changed according to the size (or format of the data) of the audio data. , Subevent Length (SE_Length), Subevent Interval (Sub_Interval), and/or Number of Subevent (NSE)) can be derived, and CIS setting information to be changed can be transmitted to an external electronic device. According to one embodiment, the electronic device needs to change the size of the audio data to be transmitted and/or received when there is no audio data to transmit, such as in the Mute setting, when the audio codec used is changed, or when the audio codec settings are changed. It can be judged that it is.

According to one embodiment, the electronic device may detect situations in which a CIS Parameter change is necessary due to changes in the characteristics of transmitted and/or received audio data, and transmit a request to change the CIS Parameter to be changed to an external electronic device. According to one embodiment, the CIS Parameter Change Request Packet may include one or more of ISO_Interval, Sub_Interval, SE_Length, Max_PDU, Max_SDU, MPT _M , MPT _S , NSE, BN, and/or FT as the parameter to be changed, and the changed Parameters can contain information about when to start an operation.

According to one embodiment, when the size of the audio data to be transmitted is reduced due to the electronic device changing the settings of the audio codec, the user sets Mute, or there is no audio data to be transmitted for more than a certain period of time, the size of the audio data to be transmitted is adjusted to the corresponding audio data size. A CIS setting change request packet requesting to reduce SE_Length and Sub_Interval (e.g., CIS setting change in FIG. 11) may be transmitted to the first electronic device. Additionally, the CIS settings change request packet may include information on when the changed settings will be applied.

According to one embodiment, the electronic device may detect situations in which BIG Parameter change is necessary due to changes in the characteristics of audio data to be broadcast, and transmit a request for BIG Parameter change to the first electronic device. A BIG Parameter change request can be broadcast using a BIG Control packet, and includes at least one of Num_BIS, ISO_Interval, BIS_Spacing, Sub_Interval, Max_PDU, Max_SDU, MTP, BN, PTO, IRC, and/or NSE as the parameter to be changed. can do. In the case of BIG, there is no Acknowledgment protocol, but the connection can be maintained only when at least one of six consecutive BIS events is received, so after six cycles, it can be set as the point of operation with changed parameters.

In operation 907, the electronic device may check whether an acceptance response from the external electronic device for CIS setting information to be changed has been received. If an acceptance response from the external electronic device is received in operation 907 (907-Yes), the electronic device can change the CIS settings based on the transmitted CIS setting information in operation 909. In operation 911, the electronic device may transmit and/or receive audio data with an external electronic device using the first communication link based on the changed CIS settings. After the CIS link is created, the electronic device changes the CIS settings based on the size or format of the audio data, allowing the electronic device to efficiently transmit and/or receive audio data even when the size or format of the audio data changes dynamically. can do. According to one embodiment, the electronic device may transmit and/or receive audio data with an external electronic device with changed CIS settings from a designated point in time (ISO interval).

According to one embodiment, when receiving an acceptance response from an external electronic device to a CIS setting change request packet, the electronic device changes the CIS operation based on the CIS Parameter requested to be changed from the start of the change included in the CIS setting change request packet. You can. According to one embodiment, the start point of change in CIS operation may be immediately after the received response, or may be designated as a specific point in time. For example, if the SE_Length and Sub_Interval are small enough for the electronic device to transmit and/or receive additional sub-events within the existing CIS event operation time, additional transmission and/or reception opportunities can be created by changing the CIS setting to increase the NSE value. It can be secured.

According to one embodiment, the electronic device may change the BIG operation based on the BIG Parameter requested to be changed after 6 cycles. Electronic devices can continue broadcasting audio data with changed BIG settings using the existing BIG configuration.

If an acceptance response from the external electronic device is not received in operation 907 (907-No), in operation 911 the electronic device may transmit and/or receive audio data with the external electronic device based on the existing (or before change) CIS settings. You can. Additionally, if an acceptance response is not received, the CIS setting change request packet can be retransmitted in the next ISO Interval.

FIG. 10 is a flowchart illustrating a method of operating an electronic device that receives a setting change request according to an embodiment of the present disclosure.

In FIG. 10, the electronic device may transmit and/or receive audio data with an external electronic device through the CIS method, and may receive a request to change CIS settings from the external electronic device. For example, the electronic device may be a wireless earphone and the external electronic device may be implemented as a terminal, a smart phone, a tablet personal computer (PC), a laptop, or a wearable device. . In one embodiment, at least one of operations 1001 to 1011 may be omitted, the order of some operations may be changed, or another operation may be added.

In operation 1001, the electronic device may connect a first communication link (or CIS link) with an external electronic device. In process 1003, the electronic device may transmit and/or receive audio data with an external electronic device through a first communication link. Each of operations 1001 and 1003 of FIG. 10 may be substantially the same as each of operations 901 and 903 of FIG. 9 .

In operation 1005, the electronic device receives CIS setting information to be changed (e.g., ISO Interval, Subevent Length (SE_Length), Subevent Interval (Sub_Interval), and/or Number of Subevent (NSE) from an external electronic device through a first communication link. ), and if it is determined to accept the CIS setting information to be changed, a response to the CIS setting information to be changed may be transmitted to the external electronic device.

According to one embodiment, the electronic device may configure CIS and receive a CIS setting change packet from an external electronic device with which it is communicating. According to one embodiment, if the electronic device can change the requested CIS settings, the electronic device may respond with its acceptance. According to one embodiment, in a situation where the electronic device cannot change the CIS settings, the electronic device may transmit a rejection response to the CIS setting change to an external electronic device. For example, the electronic device may receive a CIS setting change packet requesting to reduce SE_Length and Sub_Interval for a specific transmission and/or reception interval from an external electronic device, and may send a response packet including acceptance or rejection thereof. Can be transmitted to an external electronic device.

According to one embodiment, the electronic device may receive a BIG Control packet broadcast from an external electronic device through BIS and check the BIG Parameter change based on the received BIG Control packet. In the case of BIG through BIS, there is no Acknowledgment protocol, so it is not possible to respond to acceptance or rejection of the change, and the electronic device can communicate using the changed parameters after a preset time interval (e.g., 6 cycles).

In operation 1007, the electronic device may check whether it has received a confirmation of receipt from the external electronic device in response to the CIS setting change. If a reception confirmation from the external electronic device is received in step 1007 (1007 - Yes), the electronic device can change the CIS settings based on the CIS setting information received from the external electronic device in operation 1009. When the electronic device receives a reception confirmation from the external electronic device, the electronic device may recognize that it can transmit and/or receive audio data with the external electronic device according to the CIS setting information received from the external electronic device. When the electronic device recognizes that it can transmit and/or receive audio data with an external electronic device according to the CIS setting information, it can change the CIS settings based on the CIS setting information received from the external electronic device. In operation 1011, the electronic device may transmit and/or receive audio data with an external electronic device using the first communication link.

According to one embodiment, when receiving a confirmation of receipt from an external electronic device in response to a CIS setting change, the electronic device changes the changed CIS settings from a specified point in time (ISO interval) based on the CIS setting information received from the external electronic device. Can transmit and/or receive audio data with external electronic devices.

According to one embodiment, when receiving a confirmation of receipt from an external electronic device in response to a CIS setting change, the electronic device sends the values of the CIS Parameter that needs to be changed included in the received CIS setting change packet and the time when the change starts. CIS settings can be changed based on information about the system. For example, the electronic device accepts a setting change that increases the NSE value if the SE_Length and Sub_Interval are sufficiently small, such as for a specific transmission and/or reception interval, to allow additional transmission and/or reception of sub-events within the existing CIS event operation time. And through this, additional transmission and/or reception opportunities can be secured. For example, if the SE_Length and Sub_Interval are large, such as in a specific transmission and/or reception section, and it is difficult to transmit the corresponding sub-event within the existing CIS event operation time, the first electronic device accepts a setting change that reduces the NSE value and transmits and/or Alternatively, reception time can be secured.

According to one embodiment, the electronic device may change the BIG operation based on the BIG Parameter received as a BIG Control packet after 6 cycles. The electronic device can continue to receive audio data broadcasted by an external electronic device with the changed BIG settings using the existing BIG configuration.

If in operation 1007 an acknowledgment of reception from the external electronic device is not received (1007-No), in operation 1111 the electronic device determines whether to transmit and/or receive audio data with the external electronic device based on the existing (or before change) CIS settings. You can.

Figure 11 shows an example of transmitting and/or receiving packets between an electronic device and an external electronic device in a plurality of CIS events according to an embodiment of the present disclosure.

Referring to FIG. 11, the first CIS event (CIS event1) in the ISO Interval includes a first sub-event (subevent1), a second sub-event (subevent2), and a third sub-event (subevent3). In the first sub-event (subevent1), the electronic device may transmit the 1-1 packet 1101 to the external electronic device, and the external electronic device may transmit the 1-2 packet 1103 to the electronic device. In the second sub-event (subevent2), the electronic device may transmit the 2-1 packet 1105 to the external electronic device, and the external electronic device may transmit the 2-2 packet 1107 to the electronic device. In the third sub-event (subevent3), the electronic device may transmit the 3-1 packet 1109 to the external electronic device, and the external electronic device may transmit the 3-2 packet 1111 to the electronic device. According to one embodiment, the first time interval t1 occupied by the packet transmitted from the electronic device to the external electronic device in the first CIS event (CIS event1) is the second time interval occupied by the packet transmitted from the external electronic device to the electronic device. It may be set the same as the interval (t2).

After the first CIS event, the electronic device may transmit a CIS setting change request packet 1113 to an external electronic device if the data size needs to be changed. If the external electronic device accepts the CIS parameter change included in the CIS setting change request packet 1113, the external electronic device may transmit a response packet 1115 to the CIS setting change request packet 1113 to the electronic device. According to one embodiment, when the electronic device successfully receives the response packet 1115 to the CIS settings change request packet 1113, the electronic device responds to the CIS settings change request packet 1113 from the second CIS event (CIS event2) within the ISO Interval. Packets can be transmitted based on the included CIS parameters.

The second CIS event (CIS event2) in the ISO Interval may include the fourth sub-event (subevent4), the fifth sub-event (subevent5), and the sixth sub-event (subevent6). In the fourth subevent (subevent4), the electronic device sends the 4-1 packet 1117 to the outside based on the changed (e.g., reduced) SE_Length (or Sub_Interval) (t4) included in the CIS setting change request packet 1113. transmitted to the electronic device, and the external electronic device may transmit the 4-2 packet 1119 to the electronic device. For example, Sub_Interval for each of the first subevent (subevent1), second subevent (subevent2), and third subevent (subevent3) in the first CIS event (CIS event1) is “t3”, and 2 CIS events Sub_Interval for the fourth subevent (subevent4) within (CIS event2) may be changed (or reduced) to “t4”.

In the fifth subevent (subevent5), the electronic device transmits the 5-1 packet 1121 to the external electronic device based on the changed (e.g., reduced) SE_Length or Sub_Interval included in the CIS setting change request packet 1113, and , the external electronic device may transmit the 5-2 packet 1123 to the electronic device. In the sixth subevent (subevent6), the electronic device transmits the 6-1 packet 1125 to the external electronic device based on the changed (e.g., reduced) SE_Length and Sub_Interval included in the CIS setting change request packet 1113, and , the external electronic device may transmit the 6-2 packet 1127 to the electronic device. For example, the Sub_Interval for each of the first sub-event (subevent1), the second sub-event (subevent2), and the third sub-event (subevent3) in the first CIS event (CIS event1) is “t3”, and 2 CIS events Sub_Interval for each of the fifth sub-event (subevent5) and sixth sub-event (subevent6) in (CIS event2) may be changed (or reduced) to “t4”.

Figure 12 shows another example of transmitting and/or receiving packets between an electronic device and an external electronic device in a plurality of CIS events according to an embodiment of the present disclosure.

Referring to FIG. 12, the first CIS event (CIS event1) in the ISO Interval may include a first sub-event (subevent1), a second sub-event (subevent2), and a third sub-event (subevent3). In the first sub-event (subevent1), the electronic device may transmit the 1-1 packet 1201 to the external electronic device, and the external electronic device may transmit the 1-2 packet 1203 to the electronic device. In the second sub-event (subevent2), the electronic device may transmit the 2-1 packet 1205 to the external electronic device, and the external electronic device may transmit the 2-2 packet 1207 to the electronic device. In the third sub-event (subevent3), the electronic device may transmit the 3-1 packet 1209 to the external electronic device, and the external electronic device may transmit the 3-2 packet 1211 to the electronic device. According to one embodiment, the first time interval (t1) occupied by the packet transmitted from the electronic device to the external electronic device in the time interval (t3) occupied by the first sub-event (subeven1) is the time interval (t1) occupied by the packet transmitted by the external electronic device to the electronic device. It may be set to be the same as the second time interval (t2) occupied by the packet.

After the first CIS event (CIS event1), the electronic device may transmit a CIS setting change request packet 1213 to an external electronic device if the data size needs to be changed. If the external electronic device accepts the CIS parameter change included in the CIS setting change request packet 1213, the external electronic device may transmit a response packet 1215 to the CIS setting change request packet 1213 to the electronic device. According to one embodiment, when the electronic device successfully receives the response packet 1215 to the CIS settings change request packet 1213, the electronic device responds to the CIS settings change request packet 1213 from the second CIS event (CIS event2) within the ISO Interval. Packets can be transmitted based on the included CIS parameters.

The second CIS event (CIS event2) in the ISO Interval may include the fourth sub-event (subevent4), the fifth sub-event (subevent5), the sixth sub-event (subevent6), and the seventh sub-event (subevent7). In the fourth subevent (subevent4), the electronic device reduces SE_Length and Sub_Interval based on the changed (e.g., reduced) SE_Length and Sub_Interval values included in the CIS setting change request packet (1213) to generate the fourth-1 packet (1217). can be transmitted to the external electronic device, and the external electronic device can transmit the 4-2 packet 1219 to the electronic device. In the fifth subevent (subevent5), the electronic device reduces SE_Length and Sub_Interval based on the changed (e.g., reduced) SE_Length and Sub_Interval values included in the CIS setting change request packet (1213) to generate the 5-1 packet (1221). can be transmitted to an external electronic device, and the external electronic device can transmit the 5-2 packet 1223 to the electronic device. In the sixth subevent (subevent6), the electronic device reduces SE_Length and Sub_Interval based on the changed (e.g., reduced) SE_Length and Sub_Interval values included in the CIS setting change request packet (1213) to generate the 6-1 packet (1225). can be transmitted to an external electronic device, and the external electronic device can transmit the 6-2 packet 1227 to the electronic device. The electronic device may add a sub-event by increasing NSE by 1 based on the NSE value included in the CIS setting change request packet 1213. In the 7th sub-event (subevent7), which is secured by reducing SE_Length and Sub_Interval in the previous 4, 5, and 6 sub-events, the electronic device uses the changed (e.g., reduced) SE_Length and Sub_Interval values included in the CIS setting change request packet 1213. Based on , SE_Length and Sub_Interval can be set to transmit the 7-1 packet 1229 to the external electronic device, and the external electronic device can transmit the 7-2 packet 1231 to the electronic device.

According to one embodiment, when the electronic device determines that the SE_Length and Sub_Interval for the data to be transmitted are sufficiently small to allow additional transmission and/or reception of sub-events within the CIS event, it reduces the SE_Length and Sub_Interval values and increases the NSE value. Changes to CIS settings that increase can be requested from an external electronic device.

Figure 13 shows another example of transmitting and/or receiving packets between an electronic device and an external electronic device in a plurality of CIS events according to an embodiment of the present disclosure.

Referring to FIG. 13, the first CIS event (CIS event1) in the ISO Interval may include a first sub-event (subevent1), a second sub-event (subevent2), and a third sub-event (subevent3). In the first sub-event (subevent1), the electronic device may transmit the 1-1 packet 1301 to the external electronic device, and the external electronic device may transmit the 1-2 packet 1303 to the electronic device. According to one embodiment, the first time interval (t1) occupied by the packet transmitted from the electronic device to the external electronic device in the time interval (t3) occupied by the first sub-event (subeven1) is the time interval (t1) occupied by the packet transmitted by the external electronic device to the electronic device. It may be set to be the same as the second time interval (t2) occupied by the packet. In the second sub-event (subevent2), the electronic device may transmit the 2-1 packet 1305 to the external electronic device, and the external electronic device may transmit the 2-2 packet 1307 to the electronic device. In the third sub-event (subevent3), the electronic device may transmit the 3-1 packet 1309 to the external electronic device, and the external electronic device may transmit the 3-2 packet 1311 to the electronic device. According to one embodiment, the first time interval occupied by the packet transmitted from the electronic device to the external electronic device in the first CIS event (CIS event1) is the same as the second time interval occupied by the packet transmitted from the external electronic device to the electronic device. It can be set as follows.

After the first CIS event, the electronic device may transmit a CIS setting change request packet 1313 to an external electronic device if the data size needs to be changed. If the external electronic device accepts the CIS parameter change included in the CIS setting change request packet 1313, the external electronic device may transmit a response packet 1315 to the CIS setting change request packet 1313 to the electronic device. According to one embodiment, when the electronic device successfully receives the response packet 1315 to the CIS settings change request packet 1313, the electronic device responds to the CIS settings change request packet 1313 from the second CIS event (CIS event2) within the ISO Interval. Packets can be transmitted based on the included CIS parameters.

The second CIS event (CIS event2) in the ISO Interval may include the fourth sub-event (subevent4) and the fifth sub-event (subevent5). In the fourth subevent (subevent4), the electronic device increases SE_Length and Sub_Interval based on the changed (e.g. increased) SE_Length and Sub_Interval values included in the CIS setting change request packet 1313 to generate the 4-1 packet (1317). can be transmitted to an external electronic device, and the external electronic device can transmit the 4-2 packet 1319 to the electronic device. In the fifth sub-event (subevent5), the electronic device increases SE_Length and Sub_Interval based on the changed (e.g. increased) SE_Length and Sub_Interval values included in the CIS setting change request packet 1313 to generate the 5-1 packet (1321). can be transmitted to the external electronic device, and the external electronic device can transmit the 5-2 packet 1323 to the electronic device. The electronic device may remove the third sub-event by decreasing NSE by 1 based on the NSE value included in the CIS setting change request packet. According to one embodiment, the third time interval (t5) occupied by the packet transmitted from the electronic device to the external electronic device in the time interval (t4) occupied by the fourth sub-event (subeven4) is the time interval (t5) occupied by the packet transmitted by the external electronic device to the electronic device. It may be set shorter than the fourth time interval (t6) occupied by the packet.

According to one embodiment, when the electronic device determines that it is difficult to transmit data within a preset sub-event within a CIS event because the SE_Length and Sub_Interval for the data to be transmitted are sufficiently large, the electronic device increases the SE_Length and Sub_Interval values and decreases the NSE value. Changes to CIS settings can be requested from an external electronic device.

FIG. 14 is a flowchart for explaining a method of operating an electronic device according to an embodiment of the present disclosure.

Referring to FIG. 14, in operation 1401, an electronic device (e.g., 101 in FIG. 1; 300 in FIG. 3) connects an external electronic device (e.g., 101 in FIG. 1; 310 and 311 in FIG. 3; FIG. 3) through the CIS. 320 and 321; 330 and 331 in FIG. 3) and can be set to transmit and/or receive data. According to one embodiment, the electronic device may establish a communication link for the CIS with the external electronic device and transmit and/or receive data based on the established communication link. According to one embodiment, the electronic device may receive an advertising message from the external electronic device. According to one embodiment, the electronic device may establish a communication link for the CIS with the external electronic device using information included in the advertising message.

In operation 1403, if the size or format of the data to be transmitted and/or received needs to be changed, the electronic device includes at least one parameter value that changes based on the size or format of the data to be transmitted and/or received. You can set CIS setting information. According to one embodiment, the electronic device may change at least one parameter value for CIS based on the size or format of the data to be transmitted and/or received. According to one embodiment, the at least one parameter value may be at least one of ISO interval, sub-event length (SE_Length), sub-event interval (Sub_Interval), and number of sub-events (NSE).

In operation 1405, the electronic device may transmit the CIS setting information including the at least one parameter value to the external electronic device. In operation 1407, the electronic device may receive a response message for the CIS setting information from the external electronic device. According to one embodiment, the response message may be an acceptance message from the external electronic device for the setting information including the at least one parameter value, or an acceptance message from the external electronic device for the setting information including the at least one parameter value. This may be a rejection message from the device.

In operation 1409, the electronic device may transmit and/or receive data with the external electronic device based on the CIS setting information. According to one embodiment, the electronic device and the external electronic device may transmit and/or receive data using the at least one parameter value included in the CIS setting information.

According to one embodiment, an electronic device (101 in FIG. 1; 300 in FIG. 3) includes a communication circuit (190 in FIG. 1); and at least one processor (120 in FIG. 1) operatively connected to the communication circuit (190 in FIG. 1). The at least one processor (120 in FIG. 1) is configured to allow the electronic device (101 in FIG. 1; 300 in FIG. 3) to transmit and/or receive data with an external electronic device through a connected isochronous stream (CIS) method. If it is necessary to change the size or format of the data to be transmitted and/or received, CIS setting information including at least one parameter value that is changed based on the size or format of the data to be transmitted and/or received can be set. The at least one processor (120 in FIG. 1) may control the transmission of the CIS setting information including the at least one parameter value to an external electronic device through the communication circuit (190 in FIG. 1). The at least one processor (120 in FIG. 1) may receive a response message for the CIS setting information from the external electronic device through the communication circuit (190 in FIG. 1). The at least one processor (120 in FIG. 1) may transmit and/or receive data with the external electronic device based on the CIS setting information.

According to one embodiment, the at least one processor (120 in FIG. 1) may receive an advertising message from the external electronic device through the communication circuit (190 in FIG. 1). The at least one processor (120 in FIG. 1) may connect the external electronic device to a CIS link using information included in the advertising message.

According to one embodiment, the at least one parameter value that changes based on the size or format of the data to be transmitted and/or received is ISO interval, sub-event length (SE_Length), and sub-event interval (Sub_Interval). ), and the number of sub-events (NSE).

According to one embodiment, the response message may be an acceptance message from the external electronic device for the setting information including the at least one parameter value, or an acceptance message from the external electronic device for the setting information including the at least one parameter value. This may be a rejection message from the electronic device.

According to one embodiment, the at least one processor (120 in FIG. 1), when there is no audio data to transmit in at least one CIS sub-event with a mute setting, sets the size or format of the data to be transmitted and/or received. You may decide that change is necessary. According to one embodiment, the at least one processor (120 in FIG. 1) may determine that the size or format of the data to be transmitted and/or received needs to be changed when the audio codec used is changed. According to one embodiment, the at least one processor (120 in FIG. 1) may determine that the size or format of the data to be transmitted and/or received needs to be changed when the settings of the audio codec are changed.

According to one embodiment, the CIS setting information including the at least one parameter value may include information about when the at least one parameter value will be applied.

According to one embodiment, the electronic device (101 in FIG. 1; 310 and 311 in FIG. 3; 320 and 321 in FIG. 3; 330 and 331 in FIG. 3) includes a communication circuit (190 in FIG. 1); and at least one processor (120 in FIG. 1) operatively connected to the communication circuit (190 in FIG. 1). The at least one processor (120 in FIG. 1) allows the electronic device (101 in FIG. 1; 310 and 311 in FIG. 3; 320 and 321 in FIG. 3; 330 and 331 in FIG. 3) to operate on a connected isochronous stream (CIS). When set to transmit and/or receive data with an external electronic device through a method, at least one parameter that changes based on the size or format of data to be transmitted and/or received through the communication circuit (190 in FIG. 1) CIS setting information including a value may be received from the external electronic device. The at least one processor (120 in FIG. 1) may control a response message for the CIS setting information to be transmitted to the external electronic device through the communication circuit (190 in FIG. 1). The at least one processor (120 in FIG. 1) may transmit and/or receive data with the external electronic device based on the CIS setting information.

According to one embodiment, the at least one processor (120 in FIG. 1) may control transmission of an advertising message to the external electronic device through the communication circuit (190 in FIG. 1). According to one embodiment, the at least one processor (120 in FIG. 1) may connect the electronic device to a CIS link using information included in the advertising message.

According to one embodiment, the at least one parameter value that changes based on the size or format of the data to be transmitted and/or received is ISO interval, sub-event length (SE_Length), and sub-event interval (Sub_Interval). ), and the number of sub-events (NSE). According to one embodiment, the response message may be an acceptance message of the electronic device for the setting information including the at least one parameter value or an acceptance message of the electronic device for the setting information including the at least one parameter value. This could be a rejection message.

According to one embodiment, the method of the electronic device (101 in FIG. 1; 300 in FIG. 3) may configure the electronic device to transmit and/or receive data with an external electronic device through a connected isochronous stream (CIS). . The method of the electronic device includes a CIS that includes at least one parameter value that changes based on the size or format of the data to be transmitted and/or received when a change in the size or format of the data to be transmitted and/or received is required. It may include an operation to set setting information. The method of the electronic device may include transmitting the CIS setting information including the at least one parameter value to an external electronic device. The method of the electronic device may include receiving a response message for the CIS setting information from the external electronic device. The method of the electronic device may include transmitting and/or receiving data with the external electronic device based on the CIS setting information.

According to one embodiment, the method of the electronic device (101 in FIG. 1; 310 and 311 in FIG. 3; 320 and 321 in FIG. 3; 330 and 331 in FIG. 3) is that the electronic device uses a connected isochronous stream (CIS). When set to transmit and/or receive data to and from an external electronic device, CIS setting information including at least one parameter value that changes based on the size or format of the data to be transmitted and/or received is received from the external electronic device. It may include actions such as: The method of the electronic device may include transmitting a response message for the CIS setting information to the external electronic device. The method of the electronic device may include transmitting and/or receiving data with the external electronic device based on the CIS setting information.

According to one embodiment, a storage medium storing at least one computer-readable instruction may be provided. When executed by at least one processor, the at least one instruction may cause the electronic device (101 in FIG. 1; 300 in FIG. 3) to perform a plurality of operations. The plurality of operations may be performed when the electronic device is set to transmit and/or receive data with an external electronic device through a connected isochronous stream (CIS) and the size or format of data to be transmitted and/or received needs to be changed. and/or setting CIS setting information including at least one parameter value that changes based on the size or format of data to be received. The plurality of operations may include transmitting the CIS setting information including the at least one parameter value to an external electronic device. The plurality of operations may include receiving a response message for the CIS setting information from the external electronic device. The plurality of operations may include transmitting and/or receiving data with the external electronic device based on the CIS setting information.

According to one embodiment, a storage medium storing at least one computer-readable instruction may be provided. The at least one instruction, when executed by at least one processor, causes the electronic device (101 in FIG. 1; 310 and 311 in FIG. 3; 320 and 321 in FIG. 3; 330 and 331 in FIG. 3) to perform a plurality of operations. It can cause several actions to be performed. The plurality of operations may be at least changed based on the size or format of data to be transmitted and/or received when the electronic device is set to transmit and/or receive data with an external electronic device through a connected isochronous stream (CIS). It may include receiving CIS setting information including one parameter value from the external electronic device. The plurality of operations may include transmitting a response message for the CIS setting information to the external electronic device. The plurality of operations may include transmitting and/or receiving data with the external electronic device based on the CIS setting information.

Claims (20)

In an electronic device (101 in FIG. 1; 300 in FIG. 3),
communication circuit (190 in FIG. 1); and
At least one processor (120 in Figure 1) operatively connected to the communication circuit (190 in Figure 1),
The at least one processor (120 in FIG. 1),
The electronic device (101 in FIG. 1; 300 in FIG. 3) is set to transmit and/or receive data with an external electronic device through a connected isochronous stream (CIS),
If it is necessary to change the size or format of the data to be transmitted and/or received, set CIS setting information including at least one parameter value that is changed based on the size or format of the data to be transmitted and/or received,
Controlling to transmit the CIS setting information including the at least one parameter value to an external electronic device through the communication circuit (190 in FIG. 1),
Receiving a response message for the CIS setting information from the external electronic device through the communication circuit (190 in FIG. 1),
An electronic device configured to transmit and/or receive data with the external electronic device based on the CIS setting information. The method of claim 1, wherein the at least one processor (120 in FIG. 1),
Receiving an advertising message from the external electronic device through the communication circuit (190 in FIG. 1),
An electronic device configured to connect a CIS link with the external electronic device using information included in the advertising message. According to any one of claims 1 and 2,
The at least one parameter value that changes based on the size or format of the data to be transmitted and/or received is ISO interval (ISO interval), sub-event length (SE_Length), sub-event interval (Sub_Interval), and sub-event At least one electronic device among the number (NSE). The method according to any one of claims 1 to 3, wherein the response message is:
an acceptance message from the external electronic device for the setting information including the at least one parameter value; or
An electronic device that is a rejection message from the external electronic device regarding the setting information including the at least one parameter value. The method of any one of claims 1 to 4, wherein the at least one processor (120 in FIG. 1),
If there is no audio data to transmit in at least one CIS sub-event due to the mute setting, it is determined that it is necessary to change the size or format of the data to be transmitted and/or received, or
If the audio codec used is changed, it is determined that it is necessary to change the size or format of the data to be transmitted and/or received, or
An electronic device that determines that it is necessary to change the size or format of the data to be transmitted and/or received when the settings of the audio codec are changed. According to any one of claims 1 to 5,
The CIS setting information including the at least one parameter value includes information on a time when the at least one parameter value will be applied. In an electronic device (101 in FIG. 1; 310 and 311 in FIG. 3; 320 and 321 in FIG. 3; 330 and 331 in FIG. 3),
communication circuit (190 in FIG. 1); and
At least one processor (120 in Figure 1) operatively connected to the communication circuit (190 in Figure 1),
The at least one processor (120 in FIG. 1),
The electronic device (101 in FIG. 1; 310 and 311 in FIG. 3; 320 and 321 in FIG. 3; 330 and 331 in FIG. 3) transmits and/or transmits data to an external electronic device through a connected isochronous stream (CIS) method. When set to receive, CIS setting information including at least one parameter value that changes based on the size or format of data to be transmitted and/or received is received from the external electronic device through the communication circuit (190 in FIG. 1). receive,
Controlling to transmit a response message to the CIS setting information to the external electronic device through the communication circuit (190 in FIG. 1),
An electronic device configured to transmit and/or receive data with the external electronic device based on the CIS setting information. The method of claim 7, wherein the at least one processor (120 in FIG. 1),
Controlling to transmit an advertising message to the external electronic device through the communication circuit (190 in FIG. 1),
An electronic device configured to connect the electronic device and a CIS link using information included in the advertising message. According to any one of claims 7 to 8,
The at least one parameter value that changes based on the size or format of the data to be transmitted and/or received is ISO interval (ISO interval), sub-event length (SE_Length), sub-event interval (Sub_Interval), and sub-event At least one electronic device among the number (NSE). The method according to any one of claims 7 to 9, wherein the response message is:
an acceptance message from the electronic device for the setting information including the at least one parameter value; or
A rejection message from the electronic device for the setting information including the at least one parameter value. In the method of the electronic device (101 in FIG. 1; 300 in FIG. 3),
Setting the electronic device (101 in FIG. 1; 300 in FIG. 3) to transmit and/or receive data with an external electronic device through a connected isochronous stream (CIS);
When the size or format of the data to be transmitted and/or received needs to be changed, setting CIS setting information including at least one parameter value that is changed based on the size or format of the data to be transmitted and/or received;
Transmitting the CIS setting information including the at least one parameter value to an external electronic device;
Receiving a response message for the CIS setting information from the external electronic device; and
A method comprising transmitting and/or receiving data with the external electronic device based on the CIS setting information. According to clause 11,
Receiving an advertising message from the external electronic device; and
The method further includes connecting the external electronic device to a CIS link using information included in the advertising message. According to any one of claims 11 to 12,
The at least one parameter value that changes based on the size or format of the data to be transmitted and/or received is ISO interval (ISO interval), sub-event length (SE_Length), sub-event interval (Sub_Interval), and sub-event At least one method among the number (NSE). The method according to any one of claims 11 to 13, wherein the response message is:
an acceptance message from the external electronic device for the setting information including the at least one parameter value; or
A method that is a rejection message from the external electronic device for the setting information including the at least one parameter value. According to any one of claims 11 to 14,
When there is no audio data to be transmitted in at least one CIS sub-event with a mute setting, determining that a change in the size or format of the data to be transmitted and/or received is necessary; or
An operation of determining that a change in the size or format of the data to be transmitted and/or received is necessary when the audio codec used is changed; or
The method further includes determining that the size or format of the data to be transmitted and/or received needs to be changed when the settings of the audio codec are changed. According to any one of claims 11 to 15,
The CIS setting information including the at least one parameter value includes information on when the at least one parameter value will be applied. In the method of the electronic device (101 in FIG. 1; 310 and 311 in FIG. 3; 320 and 321 in FIG. 3; 330 and 331 in FIG. 3),
The electronic device (101 in FIG. 1; 310 and 311 in FIG. 3; 320 and 321 in FIG. 3; 330 and 331 in FIG. 3) transmits and/or receives data with an external electronic device through a connected isochronous stream (CIS). When set to do so, receiving CIS setting information including at least one parameter value that changes based on the size or format of data to be transmitted and/or received from the external electronic device;
Transmitting a response message to the CIS setting information to the external electronic device; and
A method comprising transmitting and/or receiving data with the external electronic device based on the CIS setting information. According to clause 17,
Transmitting an advertising message to the external electronic device; and
The method further includes connecting the electronic device to a CIS link using information included in the advertising message. According to any one of claims 17 to 18,
The at least one parameter value that changes based on the size or format of the data to be transmitted and/or received is ISO interval (ISO interval), sub-event length (SE_Length), sub-event interval (Sub_Interval), and sub-event At least one method among the number (NSE). The method according to any one of claims 17 to 19, wherein the response message is:
an acceptance message from the electronic device for the setting information including the at least one parameter value; or
A method that is a rejection message from the electronic device for the setting information including the at least one parameter value.

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