WO2022169141A1 - Wi-Fi 다이렉트 그룹 통신을 수행하는 전자 장치 및 그 방법 - Google Patents
Wi-Fi 다이렉트 그룹 통신을 수행하는 전자 장치 및 그 방법 Download PDFInfo
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- H04L67/00—Network arrangements or protocols for supporting network services or applications
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Definitions
- Various embodiments disclosed in this document relate to an electronic device that creates a direct communication group with another device through Wi-Fi Direct technology and performs wireless communication.
- Wi-Fi Direct Wi-Fi direct or Wi-Fi P2P, hereinafter WFD
- Wi-Fi P2P Wi-Fi P2P
- AP access point
- An electronic device wirelessly connects with another electronic device through WFD technology and provides various services such as a data transmission service, a multimedia playback service, a document print service, a display service, a wireless docking service, or a wireless serial bus service (WSB).
- a data transmission service such as a data transmission service, a multimedia playback service, a document print service, a display service, a wireless docking service, or a wireless serial bus service (WSB).
- WSD wireless serial bus service
- a plurality of electronic devices may form a wireless communication group for using the WFD service, and one of the plurality of electronic devices forming the group operates as a group owner (GO), and the others operate as group clients (GC: group client).
- group owner GO
- GC group client
- An external electronic device that is a group owner of a wireless communication group may perform a function like an access point of a wireless LAN network, and an electronic device that is a group client may perform a function like a station of a wireless LAN network.
- Group creation using the WFD technology can be not only 1:1 connection but also 1:N connection, and the number of group clients that can be accommodated may be determined according to the performance of an external electronic device that is a group owner.
- the electronic device that is the group client may not transmit data to the external electronic device that is the group owner according to a change in the operation state of the group client during communication with the external electronic device that is the group owner. For example, during communication with an external electronic device that is a group owner, an electronic device that is a group client temporarily suspends a service provided through the direct communication group or uses another communication channel through another communication channel that cannot coexist with the communication channel of the direct communication group. Wireless communication can be performed.
- the external electronic device that is the group owner Power consumption may occur as a standby state is maintained to maintain a communication channel with the electronic device, which is a client, and to provide a service.
- Various embodiments according to the present disclosure provide a method of changing an operation schedule of an external electronic device that is a group owner based on a change in an operation state of an electronic device that is a group client in a Wi-Fi Direct communication group, and an electronic device thereof.
- An electronic device includes a communication module, a memory, and at least one processor operatively connected to the communication module and the memory, wherein the processor controls the communication module to control an external electronic device and a direct communication group in which the external electronic device operates as a group owner and the electronic device operates as a group client through Wi-Fi direct connection and performs wireless communication, and the direct communication group transmits a message requesting to change the operation schedule of the direct communication group to the external electronic device as the group owner based on a change in the operation state of at least one of the processor and the communication module related to wireless communication through
- the communication module may be controlled according to the operation schedule information to perform wireless communication with the external electronic device serving as the group owner. have.
- the external device operates as a group owner and the electronic device operates as a group client through a Wi-Fi direct connection with the external electronic device.
- the group owner sends a message requesting a change in the operation schedule of the direct communication group based on an operation of creating a direct communication group to perform wireless communication, and a change in an operation state of the electronic device related to wireless communication through the direct communication group.
- a message including an operation of transmitting to the external electronic device, and operation schedule information set based on the request message is received from the external electronic device serving as the group owner, the device and the external electronic device serving as the group owner according to the operation schedule information It may include an operation of performing wireless communication.
- the operation schedule of the external electronic device that is the group owner of the direct communication group may be changed based on the change in the operation state of the electronic device that is the group client in the direct communication group.
- standby power consumption of the external electronic device as the group owner by enabling the external electronic device as the group owner to change the operation schedule of the direct communication group based on the change in the operating state of the electronic device as the group client in the direct communication group can reduce
- FIG. 1 is a block diagram of an electronic device in a network environment, according to various embodiments.
- FIG. 2 is a diagram illustrating a network structure of a direct communication group according to various embodiments.
- FIG. 3 is a flowchart illustrating a method of changing an operation schedule of a direct communication group by an electronic device that is a group client according to various embodiments of the present disclosure
- FIG. 4 is a flowchart illustrating an operation of creating a direct communication group according to various embodiments.
- FIG. 5 is a flowchart illustrating a method of changing an operation schedule of a direct communication group based on a state change of an electronic device, which is a group client, according to various embodiments of the present disclosure.
- FIG. 6 is a network structure diagram illustrating an example of changing an operation schedule of a direct communication group by an electronic device that is a group client according to various embodiments of the present disclosure
- FIG. 7 is a network structure diagram illustrating another example of changing an operation schedule of a direct communication group by an electronic device that is a group client according to various embodiments of the present disclosure.
- FIG. 8 is a diagram for explaining channel switching of FIG. 7 according to various embodiments of the present disclosure.
- FIG. 9 is a signal flow diagram illustrating an example of an operation schedule change request and response message transmission/reception operation of an electronic device, which is a group client, according to various embodiments of the present disclosure
- FIG. 10 is a diagram for explaining an example of a structure of an operation schedule change request message of FIG. 9 according to various embodiments of the present disclosure
- FIG. 11 is a diagram for explaining an example of a structure of an operation schedule change response message of FIG. 9 according to various embodiments of the present disclosure
- 12A and 12B are diagrams for explaining an example of a message structure including operation schedule information of an external electronic device that is a group owner according to various embodiments of the present disclosure
- FIG. 13 is a diagram for describing an example of an operation of performing communication of a direct communication group according to operation schedule information of an external electronic device that is a group owner according to various embodiments of the present disclosure
- 14A and 14B are diagrams for explaining a sleep operation of an external electronic device that is a group owner according to operation schedule information of an external electronic device that is a group owner, according to various embodiments of the present disclosure
- 15 is a diagram for explaining an effect of reducing power consumption of an external electronic device serving as a group owner according to a change in an operation schedule of a direct communication group by an electronic device serving as a group client according to various embodiments of the present disclosure
- FIG. 1 is a block diagram of an electronic device 101 in a network environment 100 according to various embodiments.
- an electronic device 101 communicates with an electronic device 102 through a first network 198 (eg, a short-range wireless communication network) or a second network 199 . It may communicate with at least one of the electronic device 104 and the server 108 through (eg, a long-distance wireless communication network). According to an embodiment, the electronic device 101 may communicate with the electronic device 104 through the server 108 .
- a first network 198 eg, a short-range wireless communication network
- a second network 199 e.g., a second network 199
- the electronic device 101 may communicate with the electronic device 104 through the server 108 .
- the electronic device 101 includes a processor 120 , a memory 130 , an input module 150 , a sound 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 an antenna module 197 may be included.
- 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 .
- some of these components are integrated into one component (eg, display module 160 ). can be
- the processor 120 for example, executes software (eg, a program 140) to execute at least one other component (eg, a hardware or software component) of the electronic device 101 connected to the processor 120. It can control and perform various data processing or operations. According to one embodiment, as at least part of data processing or operation, the processor 120 converts commands or data received from other components (eg, the sensor module 176 or the communication module 190 ) to the volatile memory 132 . may be stored in the volatile memory 132 , and may process commands or data stored in the volatile memory 132 , and store the result data in the non-volatile memory 134 .
- software eg, a program 140
- the processor 120 converts commands or data received from other components (eg, the sensor module 176 or the communication module 190 ) to the volatile memory 132 .
- the volatile memory 132 may be stored in the volatile memory 132 , and may process commands or data stored in the volatile memory 132 , and store the result data in the non-volatile memory 134 .
- the processor 120 is the main processor 121 (eg, a central processing unit or an application processor) or a secondary processor 123 (eg, a graphic processing unit, a neural network processing unit (eg, a graphic processing unit, a neural network processing unit) a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor).
- the main processor 121 eg, a central processing unit or an application processor
- a secondary processor 123 eg, a graphic processing unit, a neural network processing unit (eg, a graphic processing unit, a neural network processing unit) a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor.
- the main processor 121 e.g, a central processing unit or an application processor
- a secondary processor 123 eg, a graphic processing unit, a neural network processing unit (eg, a graphic processing unit, a neural network processing unit) a neural processing unit (NPU), an image signal processor, a
- the secondary processor 123 may, for example, act on behalf of the main processor 121 while the main processor 121 is in an inactive (eg, sleep) state, or when the main processor 121 is active (eg, executing an application). ), together with the main processor 121, at least one of the components of the electronic device 101 (eg, the display module 160, the sensor module 176, or the communication module 190) It is possible to control at least some of the related functions or states.
- the coprocessor 123 eg, an image signal processor or a communication processor
- may be implemented as part of another functionally related component eg, the camera module 180 or the communication module 190 ). have.
- the auxiliary processor 123 may include a hardware structure specialized for processing an artificial intelligence model.
- Artificial intelligence models can be created through machine learning. Such learning may be performed, for example, in the electronic device 101 itself on which the artificial intelligence model is performed, or may be performed through a separate server (eg, the server 108).
- the learning algorithm may include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but in the above example not limited
- the artificial intelligence model may include a plurality of artificial neural network layers.
- Artificial neural networks include deep neural networks (DNNs), convolutional neural networks (CNNs), recurrent neural networks (RNNs), restricted boltzmann machines (RBMs), deep belief networks (DBNs), bidirectional recurrent deep neural networks (BRDNNs), It may be one of deep Q-networks or a combination of two or more of the above, but is not limited to the above example.
- the artificial intelligence model may include, in addition to, or alternatively, a software structure in addition to the hardware structure.
- 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 .
- the data may include, for example, input data or output data for software (eg, the program 140 ) and instructions related thereto.
- the memory 130 may include a volatile memory 132 or a 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 an application 146 .
- the input module 150 may receive a command or data to be used by a component (eg, the processor 120 ) of the electronic device 101 from the outside (eg, a user) of the electronic device 101 .
- the input module 150 may include, for example, a microphone, a mouse, a keyboard, a key (eg, a button), or a digital pen (eg, a stylus pen).
- the sound output module 155 may output a sound signal to the outside of the electronic device 101 .
- the sound output module 155 may include, for example, a speaker or a receiver.
- the speaker 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 or as part of the speaker.
- the display module 160 may visually provide information to the outside (eg, a user) of the electronic device 101 .
- the display module 160 may include, for example, a control circuit for controlling a display, a hologram device, or a projector and a corresponding device.
- the display module 160 may include a touch sensor configured to sense a touch or a pressure sensor configured to measure the intensity of a force generated by the touch.
- the audio module 170 may convert a sound into an electric signal or, conversely, convert an electric signal into a sound. According to an embodiment, the audio module 170 acquires a sound through the input module 150 , or an external electronic device (eg, a sound output module 155 ) connected directly or wirelessly with the electronic device 101 .
- the electronic device 102) eg, a speaker or headphones
- the electronic device 102 may output a sound.
- the sensor module 176 detects an operating state (eg, power or temperature) of the electronic device 101 or an external environmental state (eg, a user state), and generates an electrical signal or data value corresponding to the sensed state. can do.
- the sensor module 176 may include, for example, a gesture sensor, a gyro sensor, a barometric 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, a humidity sensor, or an illuminance sensor.
- the interface 177 may support one or more specified protocols that may be used by the electronic device 101 to directly or wirelessly connect with an external electronic device (eg, the electronic device 102 ).
- 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 ).
- 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 may convert an electrical signal into a mechanical stimulus (eg, vibration or movement) or an electrical stimulus that the user can perceive through tactile or kinesthetic sense.
- the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulation device.
- the camera module 180 may capture still images and moving images. According to an embodiment, the camera module 180 may include one or more lenses, image sensors, image signal processors, or flashes.
- the power management module 188 may manage power supplied to the electronic device 101 .
- the power management module 188 may be implemented as, for example, at least a part of a power management integrated circuit (PMIC).
- PMIC power management integrated circuit
- the battery 189 may supply power to at least one component of the electronic device 101 .
- battery 189 may include, for example, a non-rechargeable primary cell, a rechargeable secondary cell, or a fuel cell.
- the communication module 190 is a direct (eg, wired) communication channel or a wireless communication channel between the electronic device 101 and an external electronic device (eg, the electronic device 102, the electronic device 104, or the server 108). It can support establishment and communication performance through the established communication channel.
- the communication module 190 may include one or more communication processors that operate independently of the processor 120 (eg, an application processor) and support direct (eg, wired) communication or wireless communication.
- the communication module 190 is a wireless communication module 192 (eg, a cellular communication module, a short-range communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 194 (eg, : It may include a local area network (LAN) communication module, or a power line communication module).
- a wireless communication module 192 eg, a cellular communication module, a short-range communication module, or a global navigation satellite system (GNSS) communication module
- GNSS global navigation satellite system
- wired communication module 194 eg, : It may include a local area network (LAN) communication module, or a power line communication module.
- a corresponding communication module among these communication modules is a first network 198 (eg, a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network 199 (eg, legacy It may communicate with the external electronic device 104 through a cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (eg, a telecommunication network such as a LAN or a WAN).
- a first network 198 eg, a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)
- a second network 199 eg, legacy It may communicate with the external electronic device 104 through a cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (eg, a telecommunication network such as a LAN or a WAN).
- a telecommunication network
- the wireless communication module 192 uses subscriber information (eg, 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 .
- subscriber information eg, International Mobile Subscriber Identifier (IMSI)
- IMSI International Mobile Subscriber Identifier
- the electronic device 101 may be identified or authenticated.
- the wireless communication module 192 may support a 5G network after a 4G network and a next-generation communication technology, for example, a new radio access technology (NR).
- NR access technology can be used for high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), electronic device power minimization and multiple electronic device access (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable) and low-latency communications)).
- eMBB enhanced mobile broadband
- mMTC massive machine type communications
- URLLC ultra-reliable and low-latency communications
- the wireless communication module 192 may support a high frequency band (eg, mmWave band) to achieve a high data rate, for example.
- a high frequency band eg, mmWave band
- the wireless communication module 192 includes various technologies for securing performance in a high frequency band, for example, beamforming, massive multiple-input and multiple-output (MIMO), and all-dimensional multiplexing. It may support technologies such as full dimensional MIMO (FD-MIMO), an array antenna, analog beam-forming, or a large scale antenna.
- the wireless communication module 192 may support various requirements specified in the electronic device 101 , an external electronic device (eg, the electronic device 104 ), or a network system (eg, the second network 199 ).
- the wireless communication module 192 includes a peak data rate (eg, 20 Gbps or more) for realizing eMBB, loss coverage (eg, 164 dB or less) for realizing mMTC, or U-plane latency for realizing URLLC ( Example: downlink (DL) and uplink (UL) each 0.5 ms or less, or round trip 1 ms or less) may be supported.
- a peak data rate eg, 20 Gbps or more
- loss coverage eg, 164 dB or less
- U-plane latency for realizing URLLC
- the antenna module 197 may transmit or receive a signal or power to the outside (eg, an external electronic device).
- the antenna module 197 may include an antenna including a conductor formed on a substrate (eg, a PCB) or a radiator formed of a conductive pattern.
- 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 from the plurality of antennas by, for example, the communication module 190 . can be selected. A signal or power may be transmitted or received between the communication module 190 and an external electronic device through the selected at least one antenna.
- other components eg, a radio frequency integrated circuit (RFIC)
- RFIC radio frequency integrated circuit
- the antenna module 197 may form a mmWave antenna module.
- the mmWave antenna module comprises a printed circuit board, an RFIC disposed on or adjacent to a first side (eg, bottom side) of the printed circuit board and capable of supporting a designated high frequency band (eg, mmWave band); and a plurality of antennas (eg, an array antenna) disposed on or adjacent to a second side (eg, top or side) of the printed circuit board and capable of transmitting or receiving signals of the designated high frequency band. can do.
- peripheral devices eg, a bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)
- GPIO general purpose input and output
- SPI serial peripheral interface
- MIPI mobile industry processor interface
- the command 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 the same as or different from the electronic device 101 .
- all or a part of operations executed in the electronic device 101 may be executed in one or more external electronic devices 102 , 104 , or 108 .
- the electronic device 101 may perform the function or service itself instead of executing the function or service itself.
- one or more external electronic devices may be requested to perform at least a part of the function or the service.
- One or more external electronic devices that have received the request may execute at least a part of the requested function or service, or an additional function or service related to the request, and transmit a result of the execution to the electronic device 101 .
- the electronic device 101 may process the result as it is or additionally and provide it as at least a part of a response to the request.
- cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used.
- the electronic device 101 may provide an ultra-low latency service using, for example, distributed computing or mobile edge computing.
- the external electronic device 104 may include an Internet of things (IoT) device.
- the server 108 may be an intelligent server using machine learning and/or neural networks.
- the external electronic device 104 or the server 108 may be included in the second network 199 .
- the electronic device 101 may be applied to an intelligent service (eg, smart home, smart city, smart car, or health care) based on 5G communication technology and IoT-related technology. .
- the electronic device may have various types of devices.
- the electronic device may include, for example, a portable communication device (eg, a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance device.
- a portable communication device eg, a smart phone
- a computer device e.g., a smart phone
- a portable multimedia device e.g., a portable medical device
- a camera e.g., a portable medical device
- a camera e.g., a portable medical device
- a camera e.g., a portable medical device
- a wearable device e.g., a smart bracelet
- a home appliance device e.g., a home appliance
- first, second, or first or second may simply be used to distinguish an element from other elements in question, and may refer elements to other aspects (e.g., importance or order) is not limited. It is said that one (eg, first) component is “coupled” or “connected” to another (eg, second) component, with or without the terms “functionally” or “communicatively”. When referenced, it means that one component can be connected to the other component directly (eg by wire), wirelessly, or through a third component.
- module used in various embodiments of this document may include a unit implemented in hardware, software, or firmware, and is interchangeable with terms such as, for example, logic, logic block, component, or circuit.
- a module may be an integrally formed part or a minimum unit or a part of the part that performs one or more functions.
- the module may be implemented in the form of an application-specific integrated circuit (ASIC).
- ASIC application-specific integrated circuit
- Various embodiments of the present document include one or more instructions stored in a storage medium (eg, internal memory 136 or external memory 138) readable by a machine (eg, electronic device 101).
- a storage medium eg, internal memory 136 or external memory 138
- the processor eg, the processor 120
- the device eg, the electronic device 101
- the one or more instructions may include code generated by a compiler or code executable by an interpreter.
- the device-readable storage medium may be provided in the form of a non-transitory storage medium.
- 'non-transitory' only means that the storage medium is a tangible device and does not contain a signal (eg, electromagnetic wave), and this term is used in cases where data is semi-permanently stored in the storage medium and It does not distinguish between temporary storage cases.
- a signal eg, electromagnetic wave
- the method according to various embodiments disclosed in this document may be provided in a computer program product (computer program product).
- Computer program products may be traded between sellers and buyers as commodities.
- the computer program product is distributed in the form of a machine-readable storage medium (eg compact disc read only memory (CD-ROM)), or through an application store (eg Play StoreTM) or on two user devices ( It can be distributed (eg, downloaded or uploaded) directly between smartphones (eg: smartphones) and online.
- a portion of the computer program product may be temporarily stored or temporarily created in a machine-readable storage medium such as a memory of a server of a manufacturer, a server of an application store, or a relay server.
- each component eg, a module or a program of the above-described components may include a singular or a plurality of entities, and some of the plurality of entities may be separately disposed in other components. have.
- one or more components or operations among the above-described corresponding components may be omitted, or one or more other components or operations may be added.
- a plurality of components eg, a module or a program
- 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 among the plurality of components prior to the integration. .
- operations performed by a module, program, or other component are executed sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations are executed in a different order, or omitted. or one or more other operations may be added.
- FIG. 2 is a diagram illustrating a network structure of a direct communication group according to various embodiments.
- the direct communication group includes a plurality of electronic devices (eg, the electronic device 101 of FIG. 1 ), an external electronic device (eg, the electronic device 102 of FIG. 1 ), the electronic device 201 and/or electronic device 202).
- the plurality of electronic devices 101, 102, 201 and/or 202 may form a direct communication group according to a WFD-related protocol defined in IEEE 802.11 alliance technical standards (eg, IEEE 802.11g and/or IEEE 802.11n). , but is not limited thereto, and various embodiments of the present invention may be applied to various standard or non-standard technologies related to wireless local area network (WLAN) connection.
- IEEE 802.11 alliance technical standards eg, IEEE 802.11g and/or IEEE 802.11n
- any one of the plurality of electronic devices 101 , 102 , 201 and/or 202 may operate as a group owner (eg, the electronic device 102 ), and the group The external electronic device 102 that is the owner may establish a connection with the group client electronic device 101 to form a direct group.
- a group owner eg, the electronic device 102
- the external electronic device 102 that is the owner may establish a connection with the group client electronic device 101 to form a direct group.
- the electronic device 201 or 202 when the electronic device 201 or 202 is connected to the client electronic device 101 included in the direct communication group through the external electronic device 102 that is the group owner, the electronic device 201 or 202 A new direct communication group may become a client electronic device, and the direct communication group may be newly formed by adding the electronic device 201 or 202 as a group client.
- the external electronic device 102 as a group owner may perform the same operation as an access point (AP) constituting a WLAN network.
- the external electronic device 102 as a group owner may be determined through a group owner negotiation operation protocol when connecting 1:1 with the electronic device 102 in the process of forming a direct communication group.
- the external electronic device 102 that is the group owner may control the connection between the client electronic devices 101 , 201 and/or 202 , and each of the client electronic devices 101 is 1:1 or 1:N. , 201 and/or 202).
- each of the electronic devices 102 , 201 and/or 202 may be the same as or different from the electronic device 101 .
- the electronic devices 101 , 102 , 201 and/or 202 are terminals operating in a Wi-Fi P2P network, and include a smart phone, a portable terminal, a mobile terminal, and an individual.
- general external electronic devices such as personal digital assistants (PDA), portable multimedia player (PMP) terminals, notebook computers or personal computers, Bluetooth speakers, televisions, It may include various electronic devices such as printers or cameras.
- the electronic device (eg, the electronic device 101) includes a communication module (eg, the communication module 190), a memory (eg, the memory 130), and the communication module 190 and the memory ( 130) and may include at least one processor (eg, processor 120) operatively connected.
- a communication module eg, the communication module 190
- a memory eg, the memory 130
- the communication module 190 and the memory 130
- at least one processor eg, processor 120
- the processor 120 controls the communication module 190 to communicate with an external electronic device (eg, the electronic device 102 ) through a Wi-Fi direct connection.
- the external electronic device 102 creates a direct communication group that operates as a group owner and the electronic device 101 operates as a group client, performs wireless communication, and the processor 120 related to wireless communication through the direct communication group.
- the communication module 190 based on a change in the operation state of at least one of the communication module 190, transmits a message requesting a change of the operation schedule of the direct communication group to the external electronic device 102 as the group owner, and based on the request message
- the communication module 190 is controlled according to the operation schedule information to communicate with the external electronic device 102 as the group owner. It may be set to perform wireless communication.
- the processor 120 transmits information on a change in an operation state of at least one of the processor 120 and the communication module 190 related to wireless communication through the direct communication group to request the schedule change. It may be set to be included in the message and transmitted to the external electronic device 102 that is the group owner.
- the information on the operation state change may include at least one of information on the changed operation state, change time information, and change period information.
- the processor 120 may be configured to transmit a message requesting a change of the operation schedule through the communication module 190 through a P2P presence request frame.
- the P2P presence request frame may be configured to include at least one of an attribute field, a duration field, and an interval field.
- the processor 120 transmits a response message to the operation schedule request message transmitted through the P2P presence request frame through the communication module 190 to a P2P presence response (presence response). ) can be set to receive through frames.
- the P2P presence response frame may be configured to include a status code indicating a result of the schedule change request.
- the processor 120 connects with an external electronic device that is the group owner through a second communication channel different from a first communication channel for wireless communication through a direct communication group, and performs the operation schedule change. It may be configured to transmit a request message through the second communication channel.
- the processor 120 may change the operation state of at least one of the processor 120 or the communication module 190 according to a change in the operation state of an application providing a service through the direct communication group. It can be set to check.
- the processor 120 performs time division while performing wireless communication through the direct communication group based on a change in the operating state of at least one of the processor 120 or the communication module 190 .
- wireless communication is performed by being connected to an access point through periodic channel change through
- FIG. 3 is a flowchart illustrating a method of changing an operation schedule of a direct communication group by an electronic device that is a group client (eg, the electronic device 101 of FIG. 1 or FIG. 2 ) according to various embodiments of the present disclosure.
- a group client eg, the electronic device 101 of FIG. 1 or FIG. 2
- an operation of the electronic device 101 to be described is performed through various components and/or functions of the electronic device 101 as shown in FIG. 1 under the control of a processor (eg, the processor 120 of FIG. 1 ).
- the processor 120 of the electronic device 101 performs an external electronic device (eg, the electronic device of FIG. 1 or FIG. 2 ) through a communication module (eg, the communication module 190 of FIG. 1 ). 102) and a Wi-Fi direct connection to create a direct communication group in which the external electronic device 102 operates as a group owner and the electronic device 101 operates as a group client.
- the electronic device 101 may form a direct communication group and perform wireless communication with the external electronic device 102 that is a group owner as a group client.
- the direct communication group forming operation will be described later in detail with reference to FIG. 4 .
- the processor 120 performs the operation of the direct communication group based on a change in the operating state of at least one of the processor 120 and the communication module 190 related to wireless communication through the created direct communication group.
- a message requesting to change the operation schedule may be transmitted to the external electronic device 102 that is the group owner.
- the processor 120 may check a change in the operating state of the processor 120 or the communication module 190 that transmits data through a communication channel with the external electronic device 102 that is the group owner.
- the operating state of the processor 120 may include at least one of an active state (eg, active) or an inactive state (eg, sleep) in relation to wireless communication through a direct communication group.
- an active state eg, active
- an inactive state eg, sleep
- the processor 120 is the processor 120 related to wireless communication through the direct communication group according to the operating state of an application that provides a service through the direct communication group (eg, the application 146 of FIG. 1 ). ) or the operation state of the communication module 190 is changed.
- the service providing application 146 may include at least one of a data transmission service application, a multimedia reproduction service application, a document print service application, a display service, a wireless docking service, and a wireless serial bus service.
- the operating state of the application 146 is an active state in which data transmission and reception is performed with the external electronic device 102 that is the group owner of the direct communication group by the service providing application, and thus the service is provided, or data transmission and reception is stopped, so that the service is not provided. It may include an inactive state that is at least temporarily suspended.
- the processor 120 may check a change in the operation state of the communication module 190 that transmits data through a communication channel with the external electronic device 102 that is the group owner.
- the operating state of the communication module 120 related to wireless communication through the direct communication group may be in an active state or inactive state (eg, sleep) of a communication channel with the external electronic device 102 that is the group owner. may contain one.
- a communication channel with the external electronic device 102 that is the group owner while the communication module 120 performs wireless communication through another communication channel that cannot coexist with the communication channel with the external electronic device 102 that is the group owner. may be in an inactive state.
- the processor 120 determines the changed operation based on the change in the operating state.
- a message for requesting a change in the operation schedule of the direct communication group including the time information at which the state information and/or the operation state information is changed may be generated.
- the processor 120 may include an operation schedule change request message including information on the change of the operation state.
- the operation schedule change including the changed operation state information indicating that the operation state of the processor 120 or the communication module 190 is changed from the active state to the inactive state or the changed operation state information indicating that the operation state is changed from the inactive state to the active state You can create a request message.
- the processor 120 may include an operation schedule change request message including such operation state change information.
- the processor 120 performs wireless communication through another communication channel that cannot coexist with the communication channel of the direct communication group through the communication module 190 periodically changing a channel (eg, multiple channel concurrency (MCC)).
- MCC multiple channel concurrency
- information on periodic channel change including changed operation state information indicating that the operation state of the communication module 190 is periodically changed from an active state to an inactive state, change time information, and/or change period information is included
- An operation schedule change request message may be generated.
- the processor 120 may transmit the operation schedule change request message generated through the communication module 190 to the external electronic device 102 that is the group owner.
- the processor 120 may transmit the operation schedule change request message as a presence request frame to the external electronic device 102 that is the group owner.
- the processor 120 may receive a response message to the operation schedule change request message from the external electronic device 102 that is the group owner through the communication module 190 .
- the response message to the operation schedule change request message may include a response to the operation schedule change request of the direct communication group according to the operation schedule change request.
- the response to the operation schedule change request may include a schedule change status code.
- the schedule change status code may include a value corresponding to a result of the schedule change request (eg, success, not available, bad request).
- the processor 120 when the processor 120 receives a message including operation schedule information set based on a message requesting operation schedule change from the external electronic device 102 that is the group owner, the received The communication module 190 may be controlled according to the operation schedule information included in the message to perform wireless communication with the external electronic device 102 that is the group owner.
- the external electronic device 102 that is the group owner checks information about the change in the operation state of the electronic device 101 that is the group client based on the operation schedule change request transmitted from the electronic device 101 that is the group client.
- the external electronic device 102 which is the group owner, responds when the current operating state is activated or deactivated according to the change in the operating state of the processor 120 or the communication module 190 of the electronic device 101, which is the group client.
- An operation schedule of the direct communication group may be determined based on the operation schedule.
- the operation state of the external electronic device 102 that is the group owner when the operating state of the external electronic device 102 that is the group owner is changed to the inactive state according to the change in the operating state of the processor 120 or the communication module 190 of the electronic device 101 that is the group client, the operation state is changed.
- the external electronic device 102 as the group owner may determine an operation schedule to change the communication channel of the direct communication group to an inactive state (eg, sleep) for at least a specified time.
- the operation state of the external electronic device 102 that is the group owner may be changed to the active state according to the change in the operation state of the processor 120 or the communication module 190 of the electronic device 101 that is the group client, the group In order to receive various messages including an operation schedule request message from the electronic device 101 as a client, the external electronic device 102 as the group owner changes the communication channel of the direct communication group to an active state for at least a specified period of time for a specified time. It is possible to determine the operation schedule to do so.
- the operation state of the external electronic device 102 as the group owner is periodically changed from the active state to the inactive state according to the change in the operational state of the processor 120 or the communication module 190 of the electronic device 101 as the group client.
- the external electronic device 102 which is the group owner, periodically switches the communication channel of the direct communication group to an inactive state for at least a specified time based on the operation state change information based on the operation state change information. sleep))), you can decide the operation schedule.
- the group client may receive a message including operation schedule information from the external electronic device 102 that is the group owner.
- the operation schedule information of the external electronic device 102 that is the group owner may be configured as a schedule notification attribute (eg, notice of absence attribute) and transmitted to the electronic device 101 that is a group client.
- the schedule notification attribute may be transmitted by being included in a beacon, a probe response, and/or a separate schedule notification frame (notice of absence frame) transmitted by the external electronic device 102 that is the group owner. have.
- WFD communication network is a flowchart to explain the creation operation.
- the electronic device 101 may perform WFD device discovery in operation 410 to create a direct communication group with the external electronic device 102 .
- the electronic device 101 and the external electronic device 102 may perform WFD electronic device discovery as they enter a WFD device discovery mode.
- the electronic device 101 and the external electronic device 102 automatically control the electronic device according to a user input or need to run an application using WFD or respond to a Wi-Fi simple configuration (WSC) request. can enter the WFD electronic device discovery mode.
- WSC Wi-Fi simple configuration
- the electronic device 101 and the external electronic device 102 repeatedly perform a search for searching for an electronic device and a wait for a response received from another electronic device, thereby performing WFD electronic devices.
- Device discovery can be performed.
- the electronic device 101 and the external electronic device 102 may perform a channel scan in a search state.
- the scan may be performed on all communication channels (eg, channels 1 to 11) between the electronic device 101 and the external electronic device 102 or a social channel for quick search. 1, 6, and 11) can be repeated up to the specified number of times.
- the listening of the electronic device 101 operating as a group client may be limited to one of social channels, and the selected channel may be fixed during the discovery process.
- the scan may be performed in a scan manner according to the 802.11 standard protocol.
- the electronic device 101 and the external electronic device 102 may select one of all channels or social channels in the standby state to maintain the standby state.
- the electronic device 101 and the external electronic device 102 may perform WFD electronic device discovery by exchanging a probe request and a probe response.
- the electronic device 101 may transmit a probe request to the external electronic device 102
- the external electronic device 102 receiving the probe request may transmit a probe response to the electronic device 101 .
- the probe request may include a WFD information element (IE) and/or a WSC information element.
- the probe response may include a WFD information element and/or a WSC information element.
- the electronic device 101 and the external electronic device 102 may discover each other by reaching a common channel through repetition of search and waiting. For example, the electronic device 101 and the external electronic device 102 may identify each other through a probe request or a probe response.
- any one of the electronic device 101 and the external electronic device 102 is the group owner. It may be an electronic device.
- the external electronic device 102 forms a direct communication group as an electronic device serving as a group owner
- the electronic device 101 searches for the external electronic device 102 serving as the group owner through WFD electronic device search. can be found
- the external electronic device 102 may receive the probe request received from the electronic device 101 while maintaining the standby state without performing a search.
- the electronic device 101 may perform service discovery with the external electronic device 102 in operation 420 .
- the electronic device 101 may perform a service search for exchanging information on a service provided by a higher layer in order to check a service compatible with the external electronic device 102 .
- service discovery may be performed using a service discovery query and a service discovery response.
- the electronic device 101 may transmit a service discovery query to the external electronic device 102
- the external electronic device 102 receiving the service discovery query may transmit a service discovery response to the electronic device 101 .
- the electronic device 101 may designate a service protocol type through a service discovery query, and transmit service information suitable for the service protocol type as query data.
- the external electronic device 102 may transmit a service protocol type and response data through a service discovery response.
- the service discovery may be performed to identify a service between the electronic device to which the network is connected in the third layer (layer 3).
- service discovery may be flexibly performed at any stage according to an arbitrary designation of an upper layer regardless of the MAC protocol.
- the service discovery may be performed to identify a service protocol and/or a service type that can be supported by the counterpart in advance when the WFD electronic device is discovered. Accordingly, it is possible to prevent a problem in which data sharing (eg, file sharing) is impossible because the service protocol types do not match after the electronic device 101 and the external electronic device 102 are connected.
- data sharing eg, file sharing
- the electronic device 101 may perform a provision discovery exchange with the external electronic device 102 .
- the electronic device 101 and the external electronic device 102 perform a provision discovery exchange through a provision discovery request and a provision discovery response. can do.
- the electronic device 101 may transmit a provision discovery request to the external electronic device 102
- the external electronic device 102 receiving the request may transmit a provision discovery response to the electronic device 101 .
- the provisioning discovery request may include a WSC configuration method.
- the WSC setting method may be any one of PBC, PIN from Display, or PIN from Keypad.
- it may be determined by the electronic device 102 receiving the WSC setting method.
- the external electronic device 102 that has received the provisioning search request may notify the user by displaying that the provisioning search request has been received on a display (not shown).
- the external electronic device 102 may display information on the WSC setting method on a display (not shown).
- the external electronic device 102 may display a PIN according to the WSC setting method or display information about the WSC setting method in a form of displaying a window for inputting a PIN.
- the external electronic device 102 notifies the user by displaying information including the name and/or WSC setting method of the electronic device 101 that has transmitted the provision search request in a pop-up form, so that the user can connect You can let them decide whether to accept , and whether to set up a WSC.
- the electronic device 101 may perform group owner negotiation with the external electronic device 102 .
- the electronic device 101 may determine an electronic device to operate as a group owner of a direct communication group to be formed with the external electronic device 102 .
- the electronic device 101 may determine a group owner (eg, the external electronic device 102 ) by exchanging a group owner negotiation request and a group owner negotiation response/approval with the external electronic device 102 .
- a group owner eg, the external electronic device 102
- the electronic device 101 and the external electronic device 102 may determine the group owner electronic device by comparing designated group owner intents, respectively. For example, the electronic device 101 and the external electronic device 102 determine the group owner electronic device based on information such as an attribute of a direct communication group to be formed, an operating channel, and a listening timing. can For example, when the direct communication group has already been formed, since either one of the electronic device 101 and the external electronic device 102 may already be the group owner electronic device, the group owner negotiation may be omitted.
- the electronic device 101 may perform provisioning with the external electronic device 102 in operation 450 .
- the external electronic device 102 operates as a WSC registrar as a group owner, and the electronic device 101 as a group client operates as a WSC enrollee, and provisioning for exchanging credentials can be performed.
- the electronic device 101 and the external electronic device 102 may form a direct communication group according to provisioning.
- the external electronic device 102 registers the electronic device 101 as a group client as a group owner and controls direct communication group access of the group client in an actual operation channel to operate as the group owner electronic device.
- the electronic device 101 as a group client may be connected to the external electronic device 102 as a group owner through a credential confirmed through provisioning to perform data transmission/reception through a WFD connection.
- the electronic device 101 which has performed the provisioning discovery request, transmits a periodic probe request to an external device in order to check whether the session of the external electronic device 102, which is the WSC person in charge, is in an operable state. may be transmitted to the electronic device 102 .
- the external electronic device 102 when the external electronic device 102 accepts the connection of the electronic device 101 , the external electronic device 102 switches the session of the external electronic device 102 to an operable state and transmits a periodic probe response to the electronic device. may be transmitted to the device 101 .
- FIG. 5 is a flowchart illustrating a method of changing an operation schedule of a direct communication group based on a state change of an electronic device that is a group client (eg, the electronic device 101 of FIG. 1 or FIG. 2 ) according to various embodiments of the present disclosure.
- a group client eg, the electronic device 101 of FIG. 1 or FIG. 2
- an operation of the electronic device 101 to be described is performed through various components and/or functions of the electronic device 101 as shown in FIG. 1 under the control of a processor (eg, the processor 120 of FIG. 1 ).
- the processor 120 of the electronic device 101 communicates with an external electronic device (eg, the electronic device of FIG. 1 or FIG. 2) through a communication module (eg, the communication module 190 of FIG. 1). 102) and the external electronic device 102, which is a group owner, as a group client in a direct communication group in which the external electronic device 102 operates as a group owner through a Wi-Fi direct connection Wireless communication can be performed.
- the electronic device 101 performs wireless communication with the external electronic device 102 , which is a group owner, as a group client in a direct communication group, and uses other communication standards, for example, wireless fidelity (WiFi), Bluetooth, and Bluetooth.
- WiFi wireless fidelity
- Bluetooth Bluetooth
- the group owner is connected to the external electronic device 102 or another electronic device (eg, the electronic device 201 or 202 in FIG. 2 ).
- the external electronic device 102 may additionally operate as a group client in addition to the electronic device 101 as a group owner within the direct communication group (eg, the electronic device of FIG. 2 ). 201 or 202)) and may perform wireless communication according to another communication standard.
- the processor 120 may determine whether an operation state of at least one of the processor 120 and the communication module 190 is changed in connection with wireless communication through the direct communication group.
- the operating state of the processor 120 may be changed from an active state (eg, active) to an inactive state (eg, sleep) or vice versa in connection with wireless communication through a direct communication group. .
- the processor 120 is the processor 120 related to wireless communication through the direct communication group according to the operating state of an application that provides a service through the direct communication group (eg, the application 146 of FIG. 1 ). ) or the operation state of the communication module 190 is changed.
- the operating state of the application 146 data transmission/reception with the external electronic device 102, which is the group owner of the direct communication group, is performed by the service providing application, and data transmission/reception is stopped in the active state in which the service is provided, so that the service is not provided. It may be changed to an inactive state, which is at least temporarily stopped, or vice versa, from an inactive state to an active state.
- FIG. 6 is a network structure diagram illustrating an example of changing an operation schedule of a direct communication group by the electronic device 101, which is a group client, according to various embodiments of the present disclosure.
- the electronic device 101 may load a music share service application and transmit audio data to the Bluetooth speaker 601 through the external electronic device 102 to play music.
- the external electronic device 102 may be connected to a Bluetooth speaker 601 through a Bluetooth wireless communication channel 620 .
- the processor 120 of the electronic device 101 communicates with the external electronic device 102 that is a group owner as a group client through a music sharing service application to play music using the Bluetooth speaker 601 .
- a direct communication group through 190 wireless communication may be performed through the WFD communication channel 610 .
- the processor 120 enters the WFD electronic device discovery mode and forms a direct communication group with the external electronic device 102 through the communication module 190, As a group client, audio data may be transmitted to the external electronic device 102 that is a group owner through the direct communication channel 610 .
- the external electronic device 102 as the group owner may transmit audio data received from the group client electronic device 101 to the Bluetooth speaker 601 through the Bluetooth communication channel 620 to output music. have.
- the processor 120 controls the music sharing service application in an active state (eg, music play).
- an active state eg, music play
- the operation state is changed to an inactive state (eg, pause)
- the operating state of the processor 120 driving the music sharing service application is changed or the WFD channel 610 through which data is transmitted through the music sharing service application
- the operation state change may be confirmed through the communication module 190 .
- the processor 120 may check a change in the operation state of the communication module 190 that transmits data through a communication channel with the external electronic device 102 that is the group owner.
- the operation state of the communication module 190 related to wireless communication through the direct communication group may be an activated state or an inactive state (eg, sleep ( sleep))).
- the communication module 190 performs wireless communication through another communication channel that cannot coexist with the communication channel with the external electronic device 102 that is the group owner
- the channel may be in an inactive state.
- the electronic device 101 operates in a multiple channel concurrency (MCC) mode, forms a direct communication group according to WFD technology, is connected to the external electronic device 102 as a group client, and is a group owner, so that the WFD communication channel 710 ) (eg, channel 149) while performing communication through a WiFi communication channel 720 (eg, channel 36) through channel switching may be connected to the access point 701 through the wireless communication can be performed.
- MCC multiple channel concurrency
- the WFD communication channel 710 and the WiFi communication channel 720 cannot coexist, so the electronic device 101 performs communication through two communication channels by switching channels through time division according to the MCC mode. can be done
- FIG. 8 is a diagram for explaining channel switching of FIG. 7 according to various embodiments of the present disclosure.
- the electronic device 101 periodically switches channels through time division, and communicates with the external electronic device 102 as a group owner through the WFD communication channel 710 (eg, channel 149) and WiFi communication.
- Communication with access point 701 over channel 720 may alternately repeat.
- the electronic device 101 periodically transmits the WFD communication channel 710 (eg, channel 149) while communicating with the access point 701 through the WiFi communication channel 720 (eg, channel 36).
- the WFD communication channel 710 eg, channel 149
- the WiFi communication channel 720 eg, channel 36
- data transmission of the communication module 190 through the WFD communication channel 710 may be in an inactive state.
- the processor 120 checks the operation state of the communication module 190 and periodically changes the wireless communication channel from the WFD communication channel 710 to the WiFi communication channel 720, periodically WFD communication It can be seen that the channel 710 is in an inactive state in which there is no data transmission.
- the processor 120 when the operating state of at least one of the processor 120 and the communication module 190 related to wireless communication through the direct communication group is changed, the processor 120 directs the operation based on the change in the operating state in operation 505. You can check the operation schedule of the communication group.
- the processor 120 when the operating state of the processor 120 or the communication module 190 is changed from an active state to an inactive state, the processor 120 includes an operation state including change time information along with a change in the operation state. You can check the change information.
- the processor 120 when music playback is paused in the music sharing service application, the processor 120 is configured to communicate with a communication module according to a state change of the WFD communication channel 610 used by the music sharing service application.
- a change in the operating state of 190 or a change in the operating state of the processor 120 for driving the music sharing service application can be checked, and from this, the operating state change information including the current operating state information and the change time information according to the change in the operating state. can be checked.
- the processor 120 when the operating state of the processor 120 or the communication module 190 is periodically changed from the active state to the inactive state, the processor 120 includes an operating state change period and time information of the operating state. You can check the change information. For example, referring back to FIGS.
- the electronic device 101 periodically switches a channel through time division according to the MCC mode, and a group through the WFD communication channel 710 (eg, channel 149)
- the processor 120 is the processor 120 Alternatively, by checking the operation state of the communication module 190 , it is possible to check operation state change information including the period and time information of the inactive state without data transmission through the WFD communication channel 710 .
- the processor 120 may generate an operation schedule change request message and transmit it to the external electronic device 102 which is the group owner.
- the operation schedule change request message may include operation state change information.
- the operation schedule change request message includes current operation state information and change time information checked by the processor 120 as music reproduction is paused in the music sharing service application described with reference to FIG. 6 .
- operation state change information may include operation state change information including information on the change period and time of the operation state according to the periodic channel change of the communication module 190 described with reference to FIG. 7 or FIG. 8 . .
- the processor 120 may generate a direct communication group operation schedule to request from the group owner based on the operation state change information, and transmit an operation schedule change request message including the generated operation schedule to the group owner. have.
- FIG. 9 is a signal flow diagram for explaining an operation schedule change request and response message of the electronic device 101, which is a group client, according to various embodiments of the present disclosure.
- the processor 120 of the electronic device 101 that is a client of the P2P group transmits, for example, an operation schedule change request message (eg, operation 507 of FIG. 5 ) to a P2P presence request frame 901 . ) to transmit to the external electronic device 102 that is the group owner.
- an operation schedule change request message eg, operation 507 of FIG. 5
- the P2P presence request frame includes an action frame that a group client can transmit to a group owner, and a P2P action subtype is converted to a P2P presence request 1001.
- Set, for example, schedule notification attribute (eg, notice of absence) (1003) field can be included to display the operation schedule information.
- the schedule notification attribute field 1003 may include an Attribute Type field that may indicate that the P2P attribute type is operation schedule information, an Attribute Length that may indicate the length of operation schedule information, and the length of an operation section. It may include at least one of a time length (Duration) that can represent , or a period (Interval) that can represent an operation state change period.
- transmitting the operation schedule change request message through the P2P presence request frame is an example, and the processor 120 changes the operation schedule through, for example, the external electronic device 102 and various configurable wireless communication channels. You can send a request message.
- the processor 120 may transmit an operation schedule change request message through a Bluetooth or BLE communication channel connected to the external electronic device 102 .
- the processor 120 may check whether a response to the transmitted operation schedule request message is received. For example, if a response is not received from the external electronic device 102 that is the group owner, the processor 120 may repeatedly transmit the operation schedule request message up to a specified number of times. According to an embodiment, if the processor 120 does not receive a response from the external electronic device 102 that is the group owner while repeatedly transmitting the operation schedule request message up to a specified number of times, the external electronic device 102 that is the group owner You can confirm that the schedule cannot be changed and stop the operation schedule change request. According to an embodiment, the processor 120 may check a change in the operating state of the processor 120 or the communication module 190 after a predetermined time, and transmit an operation schedule change request to the external electronic device 102 that is the group owner. have.
- the processor 120 transmits, for example, a response message to the operation schedule change request message (eg, operation 507 in FIG. 5 ) to the group owner through a P2P presence response frame 903 . It may be received from the external electronic device 102 .
- a P2P presence response frame is a response action frame to an action frame transmitted from a group client to a group owner, and a P2P action subtype is set to a P2P presence response 1101 ), and may include, for example, a schedule change status code 1103 as a response to a P2P presence request frame for a schedule change request.
- the status code 1103 may include a value corresponding to a result of the schedule change request (eg, success, not available, bad request).
- the P2P presence response frame may additionally include a schedule notification attribute (eg, notice of absence) field.
- receiving the operation schedule change response message through the P2P presence response frame is an example, and the processor 120 changes the operation schedule through, for example, the external electronic device 102 and various configurable wireless communication channels. You can receive a response message.
- the processor 120 may receive an operation schedule change response message through a Bluetooth or BLE communication channel connected to the external electronic device 102 .
- the processor 120 may receive a message including operation schedule information from the external electronic device 102 that is a group owner.
- a message including operation schedule information transmitted from the external electronic device 102 that is a group owner may be received through a beacon frame or a P2P presence request frame.
- the processor 120 when receiving the operation schedule change response message including the status code 1103 indicating that the result of the schedule change request is success, the processor 120 receives the request from the external electronic device 102 as the group owner.
- a message including operation schedule information set based on the operation schedule change request message may be received.
- the processor 120 when receiving an operation schedule change response message including a code other than the status code 1103 indicating that the result of the schedule change request is success, the processor 120 is an external electronic device that is a group owner A message including the existing operation schedule information may not be received from the 102 , or a message including the operation schedule information may not be received for a predetermined time.
- the processor 120 may perform wireless communication with the external electronic device 102 that is the group owner as a group client of the direct communication group based on the received operation schedule information.
- the operation schedule information may be set based on an operation schedule change request transmitted from the electronic device 101 that is a group client.
- the operation schedule information includes the operation state change information when the current operation state is changed to the active state or the inactive state according to the change in the operation state of the processor 120 or the communication module 190 of the electronic device 101, which is a group client. It may be configured to change the communication channel of the direct communication group to an inactive state (eg, sleep) for at least a specified time based on the .
- the operation schedule information changes the communication channel of the direct communication group to an active state for a specified time at least at a specified period in order to receive various messages including an operation schedule request message from the electronic device 101, which is a group client. can be set to
- the operation schedule information may include, when an operation state is periodically changed from an active state to an inactive state according to a change in the operation state of the processor 120 or the communication module 190 of the electronic device 101, which is a group client, Based on the operation state change information, it may be set to periodically change the communication channel of the direct communication group to an inactive state (eg, sleep) for at least a specified time.
- an inactive state eg, sleep
- a message including operation schedule information received from the external electronic device 102 that is a group owner may be configured with a schedule notification attribute (eg, notice of absence attribute).
- a schedule notification attribute eg, notice of absence attribute
- the schedule notification attribute is a group client through a beacon frame, a probe response frame, and/or a separate schedule notification frame (notice of absence frame) transmitted by the external electronic device 102 that is the group owner. may be transmitted to the electronic device 101 .
- 12A and 12B are diagrams for explaining a message structure including operation schedule information of a group owner according to various embodiments of the present disclosure
- the operation schedule information may include, for example, a schedule notification attribute (eg, notice of absence attribute) as shown in FIGS. 12A and 12B .
- a schedule notification attribute eg, notice of absence attribute
- the schedule notification attribute is included in a beacon, a probe response, and/or a separate notice of absence frame transmitted from the external electronic device 102 that is a group owner to be a group client. may be transmitted to the electronic device 101 .
- the schedule notification attribute (eg, notice of absence) may include an attribute ID field 1201 , a length field 1202 that may indicate the length of the body of the schedule notification attribute, and/or timing of schedule notification. It may include an index field 1203 that may be indicated.
- the schedule notification attribute may include a count/type field 1206 , a duration field 1207 , an interval field 1208 and/or a start to indicate a schedule notification schedule. It may include at least one of the start time field 1209 .
- the count field 1206 may indicate the number of absence intervals.
- the time length field 1207 may indicate the maximum duration length after the start of the deactivation period.
- the period field 1208 may indicate the length of the deactivation period.
- the start time field 1209 may indicate a time at which the deactivation period is started by a timer.
- FIG. 13 is a diagram for explaining an example of a communication performance operation of a direct communication group according to operation schedule information of a group owner according to various embodiments of the present disclosure
- the group owner eg, the external electronic device 102 of FIG. 1 or FIG. 2
- the group owner includes a schedule notification attribute (eg, notice of absence attribute) in, for example, a beacon frame 1301 . to transmit to the electronic device 101, which is a group client.
- a schedule notification attribute eg, notice of absence attribute
- the external electronic device 102 that is the group owner may control the radio channel of the direct communication group according to schedule information included in the schedule notification attribute (eg, notice of absence). For example, the external electronic device 102 that is the group owner may start the first inactive period 1303 based on the timer value 1309 included in the Start Time field 1209 . . For example, when the deactivation period starts, the external electronic device 102 that is the group owner may switch to a power save state for a duration 1307 included in the time length field 1207 . For example, when the deactivation period 1303 ends, the external electronic device 102 that is the group owner enters an activation period 1305 through the communication channel of the direct communication group until the next period 1308 starts. Data transmission and reception can be performed.
- schedule information included in the schedule notification attribute eg, notice of absence
- the external electronic device 102 that is the group owner may start the first inactive period 1303 based on the timer value 1309 included in the Start Time field 1209 . .
- the period 1308 of the inactivation section 1303 is included in the period field 1208 of the schedule notification attribute, and the external electronic device 102 that is the group owner sets a timer in which the timer value is included in the start time field 1208 .
- the deactivation period 1303 of the next period may be started.
- the external electronic device 102 that is the group owner may repeat the deactivation section by the number (eg, 7 times) 1306 included in the Count/Type field 1206 .
- the group client eg, the electronic device 101 of FIG. 1 or FIG. 2
- the electronic device 101 which is a group client, is in an inactive state ( doze) (1313).
- the inactive state of the electronic device 101 that is the group client is terminated and the operation state is changed to the active state
- the electronic device 101 that is the group client sets the group based on the existing operation schedule information of the external electronic device 102 that is the group owner.
- Data may be transmitted or received to the external electronic device 102 that is the group owner during a presence period 1305 in which the external electronic device 102, which is the owner, is activated.
- the electronic device 101 which is the group client, is in an inactive state 1315 in the period of deactivation 1303 of the external electronic device 102, which is the group owner, based on the operation schedule information of the external electronic device 102 that is the group owner. ) can be entered.
- 14A and 14B illustrate a sleep operation of the external electronic device 102 as a group owner according to operation schedule information of a group owner (eg, the external electronic device 102 of FIG. 1 or FIG. 2 ) according to various embodiments of the present disclosure; is a drawing for
- the electronic device eg, the electronic device 101 of FIG. 1 or FIG. 2
- the electronic device periodically switches the channel through time division, for example, while the first communication channel (eg, the electronic device 101 of FIG. 7 )
- An operation of performing communication with eg, the access point 701 of FIG. 7
- the electronic device 101 communicates with the external electronic device 102 that is the group owner through the second communication channel 710 while communicating with the access point 701 through the first communication channel 720 . may not be performed, and accordingly, data transmission of the communication module 190 through the second communication channel 710 may be in an inactive state.
- the electronic device 101 confirms a change in the operation state of the communication module 190 and sends a schedule change request message including operation state change information in which the second communication channel is changed to an inactive state. may be transmitted to the electronic device 102 .
- the external electronic device 102 which is the group owner, sets schedule information, and for example, the electronic device 101, which is the group client, periodically uses its own for a section at least included in the section in which the second communication channel is not used.
- a sleep period 1401 may be set.
- the electronic device 101, which is a group client is periodically changed to an inactive state has been described, but various embodiments are not limited thereto, and may be applied even when the electronic device 101, which is a group client, is aperiodically inactivated. .
- the current consumption waveform 1403 when the external electronic device 102 as the group owner sets the deactivation section 1401 and the current consumption waveform 1405 when the deactivation section 1401 is not set. is a graph showing Referring to the graph, it can be seen that the power consumption of the external electronic device 102 that is the group owner is actually reduced as the external electronic device 102 that is the group owner sets the deactivation section 1401 .
- FIG. 15 is a diagram illustrating a group owner (eg, in FIG. 1 or FIG. 2 ) according to a change in an operation schedule of a direct communication group by an electronic device (eg, the electronic device 101 of FIG. 1 or FIG. 2 ) that is a group client according to various embodiments of the present disclosure; It is a diagram for explaining an effect of reducing power consumption of the external electronic device 102 .
- NoA inactivation period
- the external electronic device 102 as a group owner may form a group with a plurality of client electronic devices (eg, the electronic device 101 , the electronic device 201 , and/or the electronic device 202 ). have.
- the external electronic device 102 which is the group owner, receives a schedule change request message from two or more client electronic devices, generates operation schedule information based on the received schedule change request message, and uses two or more clients. It can be transmitted to an electronic device.
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Abstract
Description
Claims (15)
- 전자 장치에 있어서,통신 모듈;메모리; 및상기 통신 모듈 및 상기 메모리와 작동적으로 연결된 적어도 하나의 프로세서;를 포함하고,상기 프로세서는, 상기 통신 모듈을 제어하여 외부 전자 장치와 Wi-Fi 다이렉트 연결(Wi-Fi direct connection)을 통해 상기 외부 전자 장치가 그룹 오너로 동작하고 상기 전자 장치가 그룹 클라이언트로 동작하는 다이렉트 통신 그룹을 생성하여 무선 통신을 수행하고,상기 다이렉트 통신 그룹을 통한 무선 통신과 관련한 상기 프로세서 및 상기 통신 모듈 중 적어도 하나의 동작 상태 변경에 기반하여 상기 다이렉트 통신 그룹의 동작 스케줄 변경을 요청하는 메시지를 상기 그룹 오너인 외부 전자 장치로 전송하고,상기 요청 메시지에 기초하여 설정된 동작 스케줄 정보를 포함하는 메시지를 상기 그룹 오너인 외부 전자 장치로부터 수신하면, 상기 동작 스케줄 정보에 따라 상기 통신 모듈을 제어하여 상기 그룹 오너인 외부 전자 장치와 무선 통신을 수행하도록 설정된,전자 장치.
- 제1항에 있어서,상기 프로세서는, 상기 다이렉트 통신 그룹을 통한 무선 통신과 관련한 상기 프로세서 및 상기 통신 모듈 중 적어도 하나의 동작 상태 변경에 대한 정보를 상기 스케줄 변경 요청 메시지에 포함시켜 상기 그룹 오너인 외부 전자 장치로 전송하도록 설정된 전자 장치.
- 제2항에 있어서,상기 동작 상태 변경에 대한 정보는 변경된 동작 상태에 대한 정보, 변경 시간 정보 및 변경 주기 정보 중 적어도 하나를 포함하는 전자 장치.
- 제1항에 있어서,상기 프로세서는, 상기 통신 모듈을 통하여 상기 동작 스케줄 변경을 요청하는 메시지를 P2P 프레즌스 요청(presence request) 프레임을 통해 전송하도록 설정되고,상기 P2P 프레즌스 요청 프레임은, 속성 필드, 시간 길이(duration) 필드 또는 주기(interval) 필드 중 적어도 하나를 포함하도록 설정된 전자 장치.
- 제4항에 있어서,상기 프로세서는, 상기 통신 모듈을 통하여 상기 P2P 프레즌스 요청(presence request) 프레임을 통해 전송된 상기 동작 스케줄 요청 메시지에 대한 응답 메시지를 P2P 프레즌스 응답(presence response) 프레임을 통해 수신하도록 설정되고,상기 P2P 프레즌스 응답 프레임은, 상기 스케줄 변경 요청에 대한 결과를 나타내는 상태 코드(status code)를 포함하도록 설정된 전자 장치.
- 제1항에 있어서,상기 프로세서는, 상기 다이렉트 통신 그룹을 통해 무선 통신하기 위한 제1 통신 채널과 다른 제2 통신 채널을 통해 상기 그룹 오너인 외부 전자 장치와 연결하고, 상기 동작 스케줄 변경을 요청하는 메시지를 상기 제2 통신 채널을 통해 전송하도록 설정된 전자 장치.
- 제1항에 있어서,상기 프로세서는, 상기 다이렉트 통신 그룹을 통해 서비스를 제공하는 어플리케이션의 동작 상태 변경에 따라 상기 프로세서 또는 상기 통신 모듈 중 적어도 하나의 동작 상태 변경을 확인하도록 설정된 전자 장치.
- 제1항에 있어서,상기 프로세서는, 상기 프로세서 또는 상기 통신 모듈 중 적어도 하나의 동작 상태 변경에 기반하여, 상기 다이렉트 통신 그룹을 통한 무선 통신을 수행하는 중에 시간 분할을 통한 주기적 채널 변경을 통해 액세스포인트와 연결되어 무선 통신을 수행함이 확인되면, 상기 주기적 채널 변경에 대한 정보를 포함시켜 상기 동작 스케줄 변경 요청 메시지를 생성하도록 설정된 전자 장치.
- 전자 장치의 방법에 있어서,외부 전자 장치와 Wi-Fi 다이렉트 연결(Wi-Fi direct connection)을 통해 상기 외부 장치가 그룹 오너로 동작하고 상기 전자 장치가 그룹 클라이언트로 동작하는 다이렉트 통신 그룹을 생성하여 무선 통신을 수행하는 동작;상기 다이렉트 통신 그룹을 통한 무선 통신과 관련한 상기 전자 장치의 동작 상태 변경에 기반하여 상기 다이렉트 통신 그룹의 동작 스케줄 변경을 요청하는 메시지를 상기 그룹 오너인 외부 전자 장치로 전송하는 동작; 및상기 요청 메시지에 기초하여 설정된 동작 스케줄 정보를 포함하는 메시지를 상기 그룹 오너인 외부 전자 장치로부터 수신하면, 상기 동작 스케줄 정보에 따라 상기 그룹 오너인 외부 전자 장치와 무선 통신을 수행하는 동작;을 포함하는 방법.
- 제9항에 있어서,상기 전송 동작은, 상기 다이렉트 통신 그룹을 통한 무선 통신과 관련한 상기 프로세서 및 상기 통신 모듈 중 적어도 하나의 동작 상태 변경에 대한 정보를 상기 스케줄 변경 요청 메시지에 포함시켜 상기 그룹 오너인 외부 전자 장치로 전송하고, 상기 동작 상태 변경에 대한 정보는 변경된 동작 상태에 대한 정보, 변경 시간 정보 및 변경 주기 정보 중 적어도 하나를 포함하는 방법.
- 제9항에 있어서,상기 전송 동작은, 상기 동작 스케줄 변경을 요청하는 메시지를 P2P 프레즌스 요청(presence request) 프레임을 통해 전송하고,상기 P2P 프레즌스 요청 프레임은, 속성 필드, 시간 길이(duration) 필드 또는 주기(Interval) 필드 중 적어도 하나를 포함하는 방법.
- 제11항에 있어서,상기 P2P 프레즌스 요청(presence request) 프레임을 통해 전송된 상기 동작 스케줄 요청 메시지에 대한 응답 메시지를 P2P 프레즌스 응답(presence response) 프레임을 통해 수신하는 동작을 더 포함하고,상기 P2P 프레즌스 응답 프레임은, 상기 스케줄 변경 요청에 대한 결과를 나타내는 상태 코드(status code)를 포함하는 방법.
- 제9항에 있어서,상기 다이렉트 통신 그룹을 통해 무선 통신하기 위한 제1 통신 채널과 다른 제2 통신 채널을 통해 상기 그룹 오너인 외부 전자 장치와 연결하는 동작을 더 포함하고,상기 전송 동작은, 상기 동작 스케줄 변경을 요청하는 메시지를 상기 제2 통신 채널을 통해 전송하는 방법.
- 제9항에 있어서,상기 다이렉트 통신 그룹을 통해 서비스를 제공하는 어플리케이션의 동작 상태 변경에 따라 상기 프로세서 또는 상기 통신 모듈 중 적어도 하나의 동작 상태 변경을 확인하는 동작을 더 포함하는 방법.
- 제9항에 있어서,상기 다이렉트 통신 그룹을 통한 무선 통신을 수행하는 중에 시간 분할을 통한 주기적 채널 변경을 통해 액세스포인트와 연결되어 무선 통신을 수행함을 확인하는 동작을 더 포함하고,상기 전송 동작은, 상기 주기적 채널 변경에 대한 정보를 포함시켜 상기 동작 스케줄 변경 요청 메시지를 생성하는 방법.
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EP22749895.3A EP4274196A4 (en) | 2021-02-02 | 2022-01-20 | ELECTRONIC DEVICE FOR CARRYING OUT DIRECT GROUP COMMUNICATION VIA WI-FI AND METHOD THEREFOR |
US18/229,458 US20240015209A1 (en) | 2021-02-02 | 2023-08-02 | Electronic device for performing wi-fi direct group communication, and method therefor |
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US (1) | US20240015209A1 (ko) |
EP (1) | EP4274196A4 (ko) |
KR (1) | KR20220111478A (ko) |
CN (1) | CN116848836A (ko) |
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WO2024120069A1 (zh) * | 2022-12-06 | 2024-06-13 | 华为技术有限公司 | P2p业务数据传输的方法和电子设备 |
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US20150036735A1 (en) * | 2013-08-02 | 2015-02-05 | Blackberry Limited | Wireless transmission of real-time media |
KR20200120587A (ko) * | 2013-03-28 | 2020-10-21 | 한국전자통신연구원 | 무선랜 시스템에서의 스테이션 간 다이렉트 통신 방법 |
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- 2021-02-02 KR KR1020210014771A patent/KR20220111478A/ko active Search and Examination
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2022
- 2022-01-20 CN CN202280012767.9A patent/CN116848836A/zh active Pending
- 2022-01-20 WO PCT/KR2022/001056 patent/WO2022169141A1/ko active Application Filing
- 2022-01-20 EP EP22749895.3A patent/EP4274196A4/en active Pending
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2023
- 2023-08-02 US US18/229,458 patent/US20240015209A1/en active Pending
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KR20200120587A (ko) * | 2013-03-28 | 2020-10-21 | 한국전자통신연구원 | 무선랜 시스템에서의 스테이션 간 다이렉트 통신 방법 |
US20150036735A1 (en) * | 2013-08-02 | 2015-02-05 | Blackberry Limited | Wireless transmission of real-time media |
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PRANEETH KEMPARAJ: "P2P Power Saving Mechanism – PART 2 – Notice of Absence (NoA)", 7 December 2019 (2019-12-07), pages 1 - 12, XP055957516, Retrieved from the Internet <URL:https://praneethwifi.in/2019/12/07/p2p-power-saving-mechanism-part-2-notice-of-absence-noa/> [retrieved on 20220905] * |
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STEPHANE BARON (CANON): "Direct Link MU transmissions", IEEE DRAFT; 11-19-1117-02-00BE-DIRECT-LINK-MU-TRANSMISSIONS, vol. 802.11 EHT; 802.11be, no. 2, 19 September 2019 (2019-09-19), Piscataway, NJ USA , pages 1 - 11, XP068153981 * |
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WO2024120069A1 (zh) * | 2022-12-06 | 2024-06-13 | 华为技术有限公司 | P2p业务数据传输的方法和电子设备 |
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EP4274196A1 (en) | 2023-11-08 |
CN116848836A (zh) | 2023-10-03 |
EP4274196A4 (en) | 2024-07-10 |
US20240015209A1 (en) | 2024-01-11 |
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