KR20230039315A - Electronic device communicating directly with external electronic device and method for thereof - Google Patents

Abstract

The present invention relates to an electronic device for communicating directly with an external electronic device to reduce data traffic within a server and an operation method thereof. According to various embodiments of the present invention, the electronic device comprises a communication module and at least one processor connected to the communication module. The at least one processor is configured to transmit identification information and communication information of the electronic device to a first server for video communication with a device group including a plurality of external electronic devices; receive communication information about the device group from the first server; determine whether there is at least one external electronic device belonging to the device group and capable of direct communication with the electronic device based on the communication information for the device group; when the at least one external electronic device capable of direct communication with the electronic device exists, check at least one of a first path for data communication with the at least one external electronic device and a second path for data communication with another electronic device through the at least one external electronic device; and transmit and receive a data stream on the basis of at least one of the first path and the second path.

Description

Electronic device directly communicating with an external electronic device and its operation method

Various embodiments of the present disclosure relate to an electronic device capable of directly communicating with an external electronic device in a multiperson video conference system and an operating method thereof.

When constructing an image sharing system that shares continuous data streams in real time, in an environment where a firewall exists between electronic devices or an electronic device exists under NAT (Network Address Translation), the electronic device has a private IP address that is only used within the NAT. For direct communication with an electronic device that exists outside the NAT or under another NAT, a technique such as hole punching is used to predict the public IP mapped with the private IP of the electronic device and attempt a connection. You can make a direct connection between devices.

On the other hand, when direct connection between electronic devices is impossible due to restrictions in the network environment, such as when NATs overlap or when an electronic device assumes a specific type of NAT in which mapped IP information cannot be predicted, an external server is shared between electronic devices. Desired real-time audio/video (A/V) streams (eg, camera images and spoken audio of each electronic device) may be relayed between electronic devices.

In the image sharing system, when all participating electronic devices access an external server, the external server receives and manages A/V streams of all participating electronic devices, and the external server provides the corresponding A/V stream to the requesting electronic device. .

In a video sharing system, when an external server processes downstream and upstream data for all participating electronic devices, a large amount of traffic is generated, requiring a lot of server computing resources and high operating costs for the service. there is.

According to various embodiments of the present disclosure, in a multiperson video conference system sharing a continuous data stream in real time, an electronic device may directly communicate with an external electronic device without going through a server.

According to various embodiments of the present disclosure, in a multiperson video conferencing system, an electronic device may transmit a data stream to an external electronic device without passing through a server so that another external electronic device may receive the corresponding data stream.

According to various embodiments, the solution to the problem is not limited to the above-mentioned solution, and the solutions not mentioned can be obtained from this specification and the accompanying drawings to those skilled in the art. will be clearly understood.

According to various embodiments, an electronic device includes a communication module and at least one processor connected to the communication module. The at least one processor transmits identification information and communication information of an electronic device to a first server for video communication with a device group including a plurality of external electronic devices, and transmits communication information about the device group to the first server. 1 is received from a server, and based on the communication information for the device group, it is determined whether or not at least one external electronic device belonging to the device group and capable of direct communication with the electronic device exists; If the at least one external electronic device capable of direct communication with the device exists, a first path for data communication with the at least one external electronic device and data communication with another electronic device through the at least one external electronic device are provided. At least one of the second paths may be checked, and a data stream may be transmitted and received based on at least one of the first path and the second path.

According to various embodiments, a server that manages a device group including a plurality of electronic devices includes a communication module and at least one processor connected to the communication module. The at least one processor receives identification information and communication information of an electronic device for video communication with a device group including a plurality of external electronic devices from the electronic device, and transmits communication information about the device group to the electronic device. and receive information about at least one external electronic device determined to be capable of direct communication with the electronic device based on the communication information about the device group from the electronic device. .

According to various embodiments, in a multi-party video conferencing system, an electronic device directly communicates with an external electronic device or performs retransmission without going through a server, thereby reducing unnecessarily generated data traffic within the server and reducing service operating costs of the system. can make it

1 is a diagram for describing communication in a network according to various embodiments.
2 is a diagram for explaining the operation of a STUN server in a network according to various embodiments.
3 is a diagram for explaining the operation of a TURN server in a network according to various embodiments.
4 is a diagram for explaining an operation of transmitting and receiving data between electronic devices in a network according to various embodiments.
5 is a diagram illustrating a network system according to various embodiments.
6 is a block diagram of an electronic device in a network environment according to various embodiments.
7 is a diagram illustrating a network system including electronic devices according to various embodiments.
8 is a diagram illustrating an operation of an electronic device according to various embodiments.
9 is a diagram illustrating a process in which an electronic device participates in a group and establishes a connection according to various embodiments.
10 is a diagram illustrating a process in which an electronic device receives data through a retransmission path according to various embodiments.
11 is a diagram illustrating a process in which an electronic device receives data through a retransmission path according to various embodiments.
12 is a diagram illustrating a process of setting a retransmission path of an electronic device according to various embodiments.
13 is a diagram illustrating a process in which an electronic device transmits and receives a data stream via a server according to various embodiments.
14A is a diagram illustrating whether direct communication is performed between electronic devices in a group for multi-party video communication according to various embodiments.
14B is a diagram illustrating a process in which an electronic device transmits and receives a data stream through a server and another electronic device according to various embodiments.
15A is a diagram illustrating whether direct communication is performed between electronic devices in a group for multilateral video communication according to various embodiments.
15B is a diagram illustrating a process in which an electronic device transmits and receives a data stream through a server and another electronic device according to various embodiments.
16 is a diagram illustrating an operating method of an electronic device according to various embodiments.

1 is a diagram for describing communication in a network according to various embodiments.

Referring to FIG. 1 , a network 10 may include a wide area network (WAN) 100, a wired/wireless router 110, and a plurality of electronic devices 120 to 124. According to various embodiments, the wired/wireless router 110 network communicates with the wide area communication network 100 using a public IP, which is a unique Internet Protocol (IP), and uses a plurality of private IPs to communicate with a plurality of electronic devices 120 to 124. ) can be connected with each. According to various embodiments, a public IP is an IP address provided by an Internet Service Provider (ISP) to identify an Internet user's local network, and since the public IP address is public to the outside, access from other electronic devices connected to the Internet is possible. do. According to various embodiments, when using a public IP address, it is necessary to install a security program such as a firewall. According to various embodiments, a private IP is an IP address of a network assigned to a home or company, and may also be referred to as a local IP or a virtual IP. Private IPs are subnetted IPs due to IPv4's lack of addresses, so they can be assigned by routers to PCs or devices on the local network.

According to various embodiments, a public IP is a unique IP and does not overlap, but in the case of a private IP, most of the IP is duplicated, and network communication based on the private IP may be difficult, and P2P connection may be difficult. According to various embodiments, the system of FIG. 1 may perform network communication using one public IP and a plurality of private IPs, which may also be referred to as network address translation (NAT). For example, for network communication, the first electronic device 120 uses a first private IP (private IP#1) and the second electronic device 122 uses a second private IP (private IP#2). The third electronic device 124 may use a third private IP (private IP#3). For example, each of the plurality of electronic devices 120 to 124 may be connected to the wired/wireless sharer 110 using a unique public IP address for network communication.

According to various embodiments, hole punching technology may be used for peer to peer (P2P) connection in an environment in which each of the plurality of electronic devices 120 to 124 uses a private IP. According to various embodiments, the relay server used in the hole punching technology may relay connections between electronic devices but may not be involved in data transmission. According to various embodiments, a relay server used in hole punching technology may be implemented as a session traversal utilities for NAT (STUN) server. According to various embodiments, the STUN server is defined in the RFC ICE (request for comments (RFC) interactive connectivity establishment (ICE) standard that enables addressing to enable data transfer between electronic devices in a NAT environment. can mean a server.

2 is a diagram for explaining the operation of a STUN server in a network according to various embodiments.

Referring to FIG. 2 , a network 20 includes a wide area communication network 200, a first electronic device 210, a first NAT 220, a first STUN server 230, a second STUN server 232, and a second STUN server 232. A NAT 222 and a second electronic device 212 may be included. According to various embodiments, the first STUN server 230 confirms that there is a first NAT 220 using a unique public IP address and a first electronic device 210 connected using a private IP address, The public IP address of the first NAT 220 can be checked. According to various embodiments, the second STUN server 232 confirms that there is a second NAT 222 using a unique public IP address and a second electronic device 212 connected using a private IP address, The public IP address of the second NAT 222 can be checked. According to various embodiments, the first NAT 220 includes a wired/wireless router (eg, the wired/wireless router 110 of FIG. 1) and other electronic devices, and the second NAT 222 includes a wired/wireless router (eg, the wired/wireless router 110 of FIG. 1). , the wired/wireless sharer 110 of FIG. 1) and other electronic devices.

According to various embodiments, the first electronic device 210 transmits a request to the first STUN server 230 to check the public IP address of the first NAT 220 and receives a request from the first STUN server 230. The public IP address of 1 NAT 220 can be received. According to various embodiments, the second electronic device 212 transmits a request to the second STUN server 232 to check the public IP address of the second NAT 222 and receives a request from the second STUN server 232. 2 NAT 222's public IP address can be received. According to various embodiments, when a private IP address is separately provided in a NAT environment, the first electronic device 210 uses the public IP address of the first NAT 220 and the second electronic device 212 uses the second NAT 222 ), P2P connection (or direct connection) can be performed using the public IP address. According to various embodiments, the first STUN server 230 transfers the public IP address of the first NAT 220 to the second STUN server 232, and the second STUN server 232 transmits the public IP address of the second NAT 222. The public IP address of may be delivered to the first STUN server (230). According to various embodiments, the first STUN server 230 forwards the public IP address of the second NAT 222 to the first NAT 220, and the second STUN server 232 transmits the public IP address of the first NAT 220. The IP address may be forwarded to the second NAT 222 . According to various embodiments, when each of the electronic devices 210 and 212 separately has a private IP address in a NAT environment, the first electronic device ( A P2P connection (or direct connection) between 210 and the second electronic device 212 may be initiated and completed.

3 is a diagram for explaining the operation of a TURN server in a network according to various embodiments.

According to various embodiments, when the P2P connection (or direct connection) through the STUN servers 230 and 232 of FIG. 2 fails or both electronic devices fail to obtain a retransmission path, data streams are directly relayed between electronic devices. You may need a server that does According to various embodiments, a server that directly relays a data stream between electronic devices may be implemented as a traversal using relays around NAT (TURN) server of FIG. 3 . According to various embodiments, the TURN server may refer to a server defined in the RFC ICE standard that enables addressing to enable data transfer between electronic devices in a NAT environment.

Referring to FIG. 3 , a network 30 includes a wide area communication network 300, a first electronic device 310, a first NAT 320, a TURN server 330, a second NAT 322, and a second electronic device. (312). According to various embodiments, the TURN server 330 establishes a connection between the first electronic device 310 and the second electronic device 310 when a P2P connection (or direct connection) between the first electronic device 310 and the second electronic device 312 fails. Data may be relayed between devices 312 . According to various embodiments, a public IP address for data relay may be set in the TURN server 330. According to various embodiments, in a NAT environment, the first electronic device 310 transmits a TURN message including its own private IP address to the TURN server 330, and the second electronic device 312 sends its private IP address A TURN message including may be transmitted to the TURN server 330. According to various embodiments, the TURN server 330 may relay data between the first electronic device 310 and the second electronic device 312 using the public IP address.

4 is a diagram for explaining an operation of transmitting and receiving data between electronic devices in a network according to various embodiments.

Referring to FIG. 4 , a network 40 includes a wide area communication network 400, a first electronic device 410, a first NAT 420, a TURN server 430, a second NAT 422, and a second electronic device. (412). According to various embodiments, the first electronic device 410 and the second electronic device 412 may exchange data through a direct connection path 401 . According to various embodiments, the first electronic device 410 and the second electronic device 412 are connected through a path 403 established through a STUN server (eg, the STUN servers 230 and 232 of FIG. 2 ). data can be exchanged. According to various embodiments, the first electronic device 410 and the second electronic device 412 follow a route 405 established through the TURN server 430 (eg, the TURN server 330 of FIG. 3 ). data can be exchanged through According to various embodiments, STUN servers (e.g., STUN servers 230 and 232 of FIG. 2) respond only with server reflexive addresses, while TURN servers 430 (e.g., FIG. 3) The TURN server 330 of ) may respond to both the relayed address and the server reflexive address.

5 is a diagram illustrating a network system according to various embodiments.

Referring to FIG. 5 , a network 50 includes a first electronic device 510, a first NAT 520, a second electronic device 512, a second NAT 522, a router 530, and a TURN server 540. ), a STUN server 550, a backbone 560, and a group management server 570. According to various embodiments, the first NAT 520 includes a wired/wireless router (eg, the wired/wireless router 110 of FIG. 1) and other electronic devices, and the second NAT 522 includes a wired/wireless router (eg, the wired/wireless router 110 of FIG. 1). , the wired/wireless sharer 110 of FIG. 1) and other electronic devices. According to various embodiments, the router 530 refers to a communication company line, sets an optimal path for data transmission between two or more networks, and enables data to be communicated from one communication network to another communication network along the corresponding path. It is an internet access device that helps.

According to various embodiments, in a NAT environment, each of the electronic devices 510 and 512 has a separate private IP address, and a P2P connection (or direct connection) between the first electronic device 510 and the second electronic device 512 fails. In this case, the TURN server 540 may relay data between the first electronic device 510 and the second electronic device 512 . According to various embodiments, the TURN server 540 may relay an end-to-end data stream of two electronic devices when both direct connection through the STUN server 550 and acquisition of a retransmission path through the electronic devices fail. According to various embodiments, when each of the electronic devices 510 and 512 separately has a private IP address in a NAT environment, the STUN server 550 performs hole punching to connect the first electronic device 510 and the second electronic device 510 to each other. A P2P connection (or direct connection) between the electronic devices 512 may be relayed. According to various embodiments, the STUN server 550 may provide possible access information to the electronic devices 510 and 512 through hole punching in a private IP use environment. According to various embodiments, the backbone 560 is a part of a network interconnecting various networks, and may provide a path for exchanging information between different LANs or subnetworks. According to various embodiments, the group management server 570 may refer to a server that manages a device group including a plurality of electronic devices for multiperson video calls or video conferences. According to various embodiments, the group management server 570 collects information on electronic devices joining in the group, sets a data (or stream) transfer path between the electronic devices, and sets the data (or stream) transfer path between the electronic devices. (stream)) You can manage information about the delivery path.

6 is a block diagram of an electronic device in a network environment according to various embodiments.

Referring to FIG. 6 , in a network environment 600, an electronic device 601 communicates with an electronic device 602 through a first network 698 (eg, a short-range wireless communication network) or through a second network 699. It may communicate with the electronic device 604 or the server 608 through (eg, a long-distance wireless communication network). According to an embodiment, the electronic device 601 may communicate with the electronic device 604 through the server 608 . According to an embodiment, the electronic device 601 includes a processor 620, a memory 630, an input module 650, a sound output module 655, a display module 660, an audio module 670, a sensor module ( 676), interface 677, connection terminal 678, haptic module 679, camera module 680, power management module 688, battery 689, communication module 690, subscriber identification module 696 , or an antenna module 697. In some embodiments, in the electronic device 601, at least one of these components (eg, the connection terminal 678) may be omitted or one or more other components may be added. In some embodiments, some of these components (eg, sensor module 676, camera module 680, or antenna module 697) are integrated into a single component (eg, display module 660). It can be.

The processor 620, for example, executes software (eg, the program 640) to cause at least one other component (eg, hardware or software component) of the electronic device 601 connected to the processor 620. It can control and perform various data processing or calculations. According to one embodiment, as at least part of data processing or operation, the processor 620 transfers instructions or data received from other components (e.g., sensor module 676 or communication module 690) to volatile memory 632. , processing the commands or data stored in the volatile memory 632, and storing the resulting data in the non-volatile memory 634. According to one embodiment, the processor 620 may include a main processor 621 (eg, a central processing unit or an application processor) or a secondary processor 623 (eg, a graphic processing unit, a neural network processing unit ( NPU: neural processing unit (NPU), image signal processor, sensor hub processor, or communication processor). For example, when the electronic device 601 includes a main processor 621 and an auxiliary processor 623, the auxiliary processor 623 may use less power than the main processor 621 or be set to be specialized for a designated function. can The auxiliary processor 623 may be implemented separately from or as part of the main processor 621 .

The auxiliary processor 623 may, for example, take the place of the main processor 621 while the main processor 621 is in an inactive (eg, sleep) state, or the main processor 621 is active (eg, running an application). ) state, together with the main processor 621, at least one of the components of the electronic device 601 (eg, the display module 660, the sensor module 176, or the communication module 690) It is possible to control at least some of the related functions or states. According to one embodiment, the co-processor 623 (eg, image signal processor or communication processor) may be implemented as part of other functionally related components (eg, camera module 680 or communication module 690). there is. According to an embodiment, the auxiliary processor 623 (eg, a neural network processing device) may include a hardware structure specialized for processing an artificial intelligence model. AI models can be created through machine learning. Such learning may be performed, for example, in the electronic device 601 itself where artificial intelligence is performed, or may be performed through a separate server (eg, the server 608). 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 foregoing, but is not limited to the foregoing examples. The artificial intelligence model may include, in addition or alternatively, software structures in addition to hardware structures.

The memory 630 may store various data used by at least one component (eg, the processor 620 or the sensor module 676) of the electronic device 601 . Data may include, for example, input data or output data for software (eg, program 640) and commands related thereto. The memory 630 may include volatile memory 632 or non-volatile memory 634 .

The program 640 may be stored as software in the memory 630 and may include, for example, an operating system 642 , middleware 644 , or an application 646 .

The input module 650 may receive a command or data to be used by a component (eg, the processor 620) of the electronic device 601 from an outside of the electronic device 601 (eg, a user). The input module 650 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 655 may output sound signals to the outside of the electronic device 601 . The sound output module 655 may include, for example, a speaker or receiver. The speaker can be used for general purposes such as multimedia playback or recording playback. A receiver may be used to receive an incoming call. According to one embodiment, the receiver may be implemented separately from the speaker or as part of it.

The display module 660 may visually provide information to the outside of the electronic device 601 (eg, a user). The display module 660 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 660 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 670 may convert sound into an electrical signal or vice versa. According to one embodiment, the audio module 670 acquires sound through the input module 650, the sound output module 655, or an external electronic device connected directly or wirelessly to the electronic device 601 (eg: Sound may be output through the electronic device 602 (eg, a speaker or a headphone).

The sensor module 676 detects an operating state (eg, power or temperature) of the electronic device 601 or an external environmental state (eg, a user state), and generates an electrical signal or data value corresponding to the detected state. can do. According to one embodiment, the sensor module 676 may include, 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 bio sensor, It may include a temperature sensor, humidity sensor, or light sensor.

The interface 677 may support one or more specified protocols that may be used to directly or wirelessly connect the electronic device 601 to an external electronic device (eg, the electronic device 602). According to one embodiment, the interface 677 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 678 may include a connector through which the electronic device 601 may be physically connected to an external electronic device (eg, the electronic device 602). According to one embodiment, the connection terminal 678 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 679 may convert electrical signals into mechanical stimuli (eg, vibration or movement) or electrical stimuli that a user may perceive through tactile or kinesthetic senses. According to one embodiment, the haptic module 679 may include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

The camera module 680 may capture still images and moving images. According to one embodiment, the camera module 680 may include one or more lenses, image sensors, image signal processors, or flashes.

The power management module 688 may manage power supplied to the electronic device 601 . According to one embodiment, the power management module 688 may be implemented as at least part of a power management integrated circuit (PMIC), for example.

The battery 689 may supply power to at least one component of the electronic device 601 . According to one embodiment, the battery 689 may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

The communication module 690 is a direct (eg, wired) communication channel or a wireless communication channel between the electronic device 601 and an external electronic device (eg, the electronic device 602, the electronic device 604, or the server 608). Establishment and communication through the established communication channel may be supported. The communication module 690 may include one or more communication processors that operate independently of the processor 620 (eg, an application processor) and support direct (eg, wired) communication or wireless communication. According to one embodiment, the communication module 690 is a wireless communication module 692 (eg, a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 694 (eg, a : a local area network (LAN) communication module or a power line communication module). Among these communication modules, a corresponding communication module is a first network 698 (eg, a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network 699 (eg, legacy It may communicate with the external electronic device 604 through a cellular network, a 5G network, a next-generation communication network, the Internet, or a telecommunications network such as a computer network (eg, LAN or WAN). These various types of communication modules may be integrated as one component (eg, a single chip) or implemented as a plurality of separate components (eg, multiple chips). The wireless communication module 692 uses subscriber information (eg, International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module 696 within a communication network such as the first network 698 or the second network 699. The electronic device 601 may be identified or authenticated.

The wireless communication module 692 may support a 5G network after a 4G network and a next-generation communication technology, such as NR access technology (new radio access technology). NR access technologies include high-speed transmission of high-capacity data (enhanced mobile broadband (eMBB)), minimization of terminal power and access of multiple terminals (massive machine type communications (mMTC)), or high reliability and low latency (ultra-reliable and low latency (URLLC)). -latency communications)) can be supported. The wireless communication module 692 may support a high frequency band (eg, mmWave band) to achieve a high data rate, for example. The wireless communication module 692 uses various technologies for securing performance in a high frequency band, such as beamforming, massive multiple-input and multiple-output (MIMO), and full-dimensional multiplexing. Technologies such as input/output (FD-MIMO: full dimensional MIMO), array antenna, analog beam-forming, or large scale antenna may be supported. The wireless communication module 692 may support various requirements defined for the electronic device 601, an external electronic device (eg, the electronic device 604), or a network system (eg, the second network 699). According to one embodiment, the wireless communication module 692 is a peak data rate for eMBB realization (eg, 20 Gbps or more), a loss coverage for mMTC realization (eg, 164 dB or less), or a U-plane latency for URLLC realization (eg, Example: downlink (DL) and uplink (UL) each of 0.5 ms or less, or round trip 1 ms or less) may be supported.

The antenna module 697 may transmit or receive signals or power to the outside (eg, an external electronic device). According to one embodiment, the antenna module 697 may include an antenna including a radiator formed of a conductor or a conductive pattern formed on a substrate (eg, PCB). According to one embodiment, the antenna module 697 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 698 or the second network 699 is selected from the plurality of antennas by the communication module 690, for example. can be chosen A signal or power may be transmitted or received between the communication module 690 and an external electronic device through the selected at least one antenna. According to some embodiments, other components (eg, a radio frequency integrated circuit (RFIC)) may be additionally formed as a part of the antenna module 697 in addition to the radiator.

According to various embodiments, the antenna module 697 may form a mmWave antenna module. According to one embodiment, the mmWave antenna module includes a printed circuit board, an RFIC disposed on or adjacent to a first surface (eg, a lower surface) of the printed circuit board and capable of supporting a designated high frequency band (eg, mmWave band); and a plurality of antennas (eg, array antennas) disposed on or adjacent to a second surface (eg, a top surface or a side surface) of the printed circuit board and capable of transmitting or receiving signals of the designated high frequency band. can do.

At least some of the components are connected to each other through a communication method between peripheral devices (eg, a 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 an embodiment, commands or data may be transmitted or received between the electronic device 601 and the external electronic device 604 through the server 608 connected to the second network 699 . Each of the external electronic devices 602 or 604 may be the same as or different from the electronic device 601 . According to an embodiment, all or part of operations executed in the electronic device 601 may be executed in one or more external electronic devices among the external electronic devices 602 , 604 , or 608 . For example, when the electronic device 601 needs to perform a certain function or service automatically or in response to a request from a user or another device, the electronic device 601 instead of executing the function or service by itself. Alternatively or additionally, one or more external electronic devices may be requested to perform the function or at least part of the service. One or more external electronic devices receiving 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 deliver the execution result to the electronic device 601 . The electronic device 601 may provide the result as at least part of a response to the request as it is or additionally processed. To this end, for example, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used. The electronic device 601 may provide an ultra-low latency service using, for example, distributed computing or mobile edge computing. In another embodiment, the external electronic device 604 may include an internet of things (IoT) device. Server 608 may be an intelligent server using machine learning and/or neural networks. According to one embodiment, the external electronic device 604 or server 608 may be included in the second network 699 . The electronic device 601 may be applied to intelligent services (eg, smart home, smart city, smart car, or health care) based on 5G communication technology and IoT-related technology.

Electronic devices according to various embodiments disclosed in this document may be devices of various types. 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. An electronic device according to an embodiment of the present document is not limited to the aforementioned devices.

Various embodiments of this document and terms used therein are not intended to limit the technical features described in this document to specific embodiments, but should be understood to include various modifications, equivalents, or substitutes of the embodiments. In connection with the description of the drawings, like reference numbers may be used for like or related elements. The singular form of a noun corresponding to an item may include one item or a plurality of items, unless the relevant context clearly dictates otherwise. In this document, "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 the phrases such as "at least one of , B, or C" may include any one of the items listed together in that phrase, or all possible combinations thereof. Terms such as "first", "second", or "first" or "secondary" may simply be used to distinguish a given component from other corresponding components, and may be used to refer to a given component in another aspect (eg, importance or order) is not limited. A (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 the certain component may be connected to the other component directly (eg by wire), wirelessly, or through a third component.

The term "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, logical blocks, parts, or circuits. can be used as A module may be an integrally constructed component or a minimal unit of components or a portion 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).

Various embodiments of this document provide 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). It may be implemented as software (eg, the program 140) including them. For example, a processor (eg, the processor 120 ) of a device (eg, the electronic device 101 ) may call at least one command among one or more instructions stored from a storage medium and execute it. This enables the device to be operated to perform at least one function according to the at least one command invoked. 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. Here, 'non-temporary' only means that the storage medium is a tangible device and does not contain a signal (e.g. electromagnetic wave), and this term refers to the case where data is stored semi-permanently in the storage medium. It does not discriminate when it is temporarily stored.

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

According to various embodiments, each component (eg, module or program) of the above-described components may include a single object or a plurality of entities, and some of the plurality of entities may be separately disposed in other components. there is. According to various embodiments, one or more components or operations among the aforementioned corresponding components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of 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 of the plurality of components identically or similarly to those performed by a corresponding component of the plurality of components prior to the integration. . According to various embodiments, the actions performed by a module, program, or other component are executed sequentially, in parallel, iteratively, or heuristically, or one or more of the actions are executed in a different order, or omitted. or one or more other actions may be added.

According to various embodiments, when configuring an image sharing system, a direct connection between electronic devices may not be possible in a NAT (or firewall) environment. According to various embodiments, when connection to most multi-party video calls or video conferencing systems is not possible due to limitations in the network environment, real-time A/V (audio/video) streams (camera video and speech of each user terminal) to be shared between end-to-end voice) may be configured to be relayed through a server (eg, a TURN server). According to various embodiments, all participating electronic devices may access the server, the server may receive and manage A/V streams of all electronic devices, and the server may provide the A/V stream to requesting electronic devices.

According to various embodiments, in a multiparty video call or video conferencing system, each electronic device transmits and receives a real-time media stream, and a TURN server or a central server (eg, SFU) is used for a case where a direct network connection between electronic devices is impossible. It is possible to transmit and receive streams between electronic devices through the via. According to various embodiments, when a real-time A/V stream is transmitted via a server, a large amount of data traffic is generated, server computing resources are required, and high operational costs for the service may occur. According to various embodiments, the same service can be efficiently provided by maximizing the probability of directly transmitting and receiving data between electronic devices in order to configure a service for sharing continuous data streams in real time. According to various embodiments, when two electronic devices that need to transmit and receive images with each other cannot directly exchange data due to a network environment of a firewall or an overlapping NAT (relay through a TURN server or media provide/receive with a server through SFU) A method for performing communication excluding the server as much as possible (not communication through consumption) may be provided.

7 is a diagram illustrating a network system including electronic devices according to various embodiments.

Referring to FIG. 7 , a network 70 includes an electronic device 710 (eg, the electronic devices 510 and 512 of FIG. 5 and the electronic device 601 of FIG. 6 ), a first server 720 (eg, For example, the TURN server 540 of FIG. 5) and the second server 730 (eg, the group management server 570 of FIG. 5) may be included. According to various embodiments, the electronic device 710 includes a communication module 712 (eg, the communication module 690 of FIG. 6 ), a processor 716 (eg, the processor 620 of FIG. 6 ), and memory 718 (eg, memory 630 of FIG. 6 ). According to various embodiments, the first server 720 includes a communication module 722 for communicating with the electronic device 710 or an external server, a processor 724 for controlling overall operations of the first server 720, and a memory. (726). According to various embodiments, the first server 720 may relay a data stream between electronic devices when both a direct connection between electronic devices and acquisition of a retransmission path through the electronic devices fail. According to various embodiments, the second server 730 includes a communication module 732 for communicating with the electronic device 710 or an external server, a processor 734 for controlling overall operations of the second server 730, and a memory. (736). According to various embodiments, the second server 730 collects information on electronic devices joining a group for multilateral video communication (hereinafter referred to as a 'device group' for convenience of explanation), and stream data between the electronic devices. You can set delivery routes and manage related information.

According to various embodiments, the communication module 712 included in the electronic device 710 may include a media streamer 713 and a network connector 714 . According to various embodiments, the media streamer 713 provides connection information between a plurality of electronic devices and a data stream delivery path from the second server 730 (eg, the group management server 570 of FIG. 5 ). Information may be obtained, and based on the obtained information, A/V data may be transmitted and received to other electronic devices through a streaming protocol. According to various embodiments, the network connector 714 acquires access information of electronic devices in a NAT environment where a private IP address is used, and the electronic device 710 participates in a group (device group) for multilateral video communication. It checks whether it is possible to directly connect to the , and generates meta data according to the check result.

According to various embodiments, the processor 716 included in the electronic device 710 may transmit communication information about the device group for video communication with at least one external electronic device included in the device group configured for multi-party video communication. may be obtained from the second server 730 (eg, the group management server 570 of FIG. 5). According to various embodiments, the processor 716 determines whether at least one external electronic device belonging to the device group and capable of direct communication with the electronic device 710 exists based on the communication information about the device group. can According to various embodiments, the processor 716 may determine (or determine) a path for direct communication with the at least one external electronic device if there is at least one external electronic device capable of direct communication with the electronic device 710 . can According to various embodiments, the processor 716 may control transmission and reception of a data stream based on a path for direct communication.

According to various embodiments, the processor 716 transmits data streams of a plurality of external electronic devices in a device group to the first server 720 (if at least one external electronic device capable of direct communication with the electronic device 710 does not exist). For example, it can be obtained from the TURN server 540 of FIG. 5 . According to various embodiments, the processor 716 may control transmission of a data stream of the electronic device 710 to a first external electronic device belonging to a device group based on a path for direct communication. According to various embodiments, the processor 716 may control a data stream of the first external electronic device to be received from the first external electronic device based on a path for direct communication. According to various embodiments, the processor 716 converts the data stream of the electronic device 710 based on a path for direct communication to transfer the data stream of the electronic device 710 to the first external electronic device belonging to the device group. It can be controlled to be transmitted to a second external electronic device belonging to a device group. According to various embodiments, the processor 716 may control a data stream of the first external electronic device to be received from the second external electronic device based on a path for direct communication.

According to various embodiments, the processor 716 determines at least one external electronic device capable of direct communication with the electronic device 710 based on at least one of the number of retransmissions of the data stream and the number of transmissions of the electronic device performing the retransmission. can According to various embodiments, the processor 716 transmits information about a path for direct communication with at least one external electronic device to the second server 730 (eg, the group management server 570 of FIG. 5 ). transmission can be controlled.

According to various embodiments, the first server 720 (eg, the TURN server 540 of FIG. 5 ) performs a multiperson video conference if at least one external electronic device capable of direct communication with the electronic device 710 does not exist. Data streams of a plurality of external electronic devices in the device group for the device may be provided to the electronic device 710 .

According to various embodiments, the second server 730 (eg, the group management server 570 of FIG. 5 ) may manage a device group including a plurality of electronic devices. According to various embodiments, the processor 734 may transmit communication information about the device group to the electronic device 710 so that the electronic device performs video communication through the device group. According to various embodiments, the processor 734 transmits information about at least one external electronic device determined to be capable of direct communication with the electronic device 710 based on the communication information about the device group to the electronic device ( 710). According to various embodiments, the processor 734 controls to update a transmission/reception path for a device group based on information on at least one external electronic device and to transmit information on the updated transmission/reception path to the electronic device 710. can do. According to various embodiments, at least one external electronic device capable of direct communication with the electronic device 710 may be determined based on at least one of the number of retransmissions of a data stream and the number of transmissions of an electronic device performing retransmission.

8 is a diagram illustrating an operation of an electronic device according to various embodiments.

Referring to FIG. 8 , a network 80 may include a first electronic device 810, a NAT 820, a TURN server 830, a second electronic device 812, and a third electronic device 814. there is. According to various embodiments, when direct communication between the first electronic device 810 and the second electronic device 812 is impossible, the TURN server 830 transmits data between the first electronic device 810 and the second electronic device 812. Streams can be relayed (or relayed). According to various embodiments, when direct communication between the second electronic device 812 and the third electronic device 814 is possible, the second electronic device 812 receives the first electronic device 810 from the TURN server 830. The data stream of can be transferred to the third electronic device 814 through direct communication. According to various embodiments, the TURN server 830 transfers the data stream of the first electronic device 810 to the third electronic device 814 through direct communication by the second electronic device 812 ( 810) and the third electronic device 814, it is possible to reduce radio resources and service costs without relaying (or relaying) a data stream.

9 is a diagram illustrating a process in which an electronic device participates in a group and establishes a connection according to various embodiments.

Referring to FIG. 9 , when a plurality of terminals 910 to 930 create a group (Group 1) and perform multi-party video communication, a group management server (eg, the group management server 570 of FIG. 5) Information on groups for multilateral video communication can be stored and managed. According to various embodiments, when the fourth electronic device 940 wants to join a group (Group 1) for multiperson video communication, the fourth electronic device 940 may use a group management server (eg, FIG. 5 ). A plurality of electronic devices (e.g., the first electronic device 910, the second electronic device 920, or the third electronic device) belonging to the group (Group 1) for multilateral video communication from the group management server 570 of (930)) can be obtained. According to various embodiments, the fourth electronic device 940 may determine whether a direct connection with each of the plurality of electronic devices 910 to 930 is possible based on information about the plurality of electronic devices 910 to 930. there is.

According to various embodiments, the fourth electronic device 940 transmits information about whether direct connection with each of the plurality of electronic devices 910 to 930 is possible to a group management server (eg, the group management server of FIG. 5 ( 570)), and the group management server (eg, the group management server 570 of FIG. 5) may update information about a group for multilateral video communication. According to various embodiments, the group management server (eg, the group management server 570 of FIG. 5) transmits information about a group for multi-party video communication to a STUN server (eg, the STUN server 230 of FIG. 2). 232), STUN server 550 in FIG. 5) or TURN server (eg, TURN server 330 in FIG. 3, TURN server 430 in FIG. 4, TURN server 540 in FIG. 5). can

According to various embodiments, the fourth electronic device 940 may identify an electronic device to transmit or receive an A/V stream through a direct connection among a plurality of electronic devices 910 to 930 . According to various embodiments, the fourth electronic device 940 may identify an electronic device to transmit or receive an A/V stream through a retransmission path via another electronic device among a plurality of electronic devices 910 to 930. . According to various embodiments, the fourth electronic device 940 may check at least one of a direct path and a retransmission path through which an A/V stream is transmitted/received, and transmit/receive the A/V stream.

10 is a diagram illustrating a process in which an electronic device receives data through a retransmission path according to various embodiments.

Referring to FIG. 10 , a plurality of electronic devices 1010 to 1040 are included in a group for multilateral video communication, and a fourth electronic device 1040 interacts with a first electronic device 1010 and a second electronic device 1020. When direct connection is not possible and direct connection with the third electronic device 1030 is possible, the first electronic device 1010 transmits its data stream to the second electronic device in order to transmit the data stream to the fourth electronic device 1040. 1020, the second electronic device 1020 transfers the data stream of the first electronic device 1010 to the third electronic device 1030, and the third electronic device 1030 transfers the data stream of the first electronic device 1030 to the first electronic device ( The data stream of 1010 may be transferred to the fourth electronic device 1040 .

11 is a diagram illustrating a process in which an electronic device receives data through a retransmission path according to various embodiments.

Referring to FIG. 11 , a primary electronic device 1110 transmits an origin source stream to at least one secondary electronic device (eg, a secondary electronic device 1120-1 to a secondary electronic device 1120-1). N electronic device 1120-N). The at least one secondary electronic device (eg, the first secondary electronic device 1120-1 to the secondary Nth electronic device 1120-N) receives an original source stream from the primary electronic device 1110. and may provide the original source stream to at least one tertiary electronic device 1130. The at least one tertiary electronic device 1130 may receive an original source stream from a corresponding secondary first electronic device 1120-1. According to various embodiments, the tertiary electronic device 1130 transmits information about the number (N) of streams being transmitted by the primary electronic device 1110 and the number of retransmissions (D) of the original source stream to a group management server (eg For example, it is received from the group management server 570 of FIG. 5), the number N of streams being transmitted is compared with a first threshold value (eg, the maximum value of streams being transmitted), and the original source stream is retransmitted. An optimal path may be determined by comparing the number of times D with a second threshold value (eg, a maximum value of retransmission of a stream).

According to various embodiments, the tertiary electronic device 1130 determines that the number of streams (N) being transmitted by the primary electronic device 1110 is less than a first threshold and the number of retransmissions (D) of the original source stream is a second threshold. A plurality of candidate paths smaller than the value may be determined, and a path having the shortest path among the plurality of candidate paths may be determined as a reception path. According to various embodiments, it takes 300 to 500 ms each time the number of retransmissions (D) of the original source stream increases once, and the number of retransmissions (D) of the original source stream depends on the QoS factor (allowable delay time) of the service. ) can be limited. According to various embodiments, the number (N) of streams being transmitted by the electronic device may be set within [setting resolution data bps / connected network B/W]. According to various embodiments, when the tertiary electronic device 1130 cannot find candidate routes, the tertiary electronic device 1130 performs a TURN server (eg, the TURN server 330 of FIG. 3 or the TURN server 330 of FIG. 4 ). The original source stream of the primary electronic device 1110 may be delivered through the relay relay of the server 430 and the TURN server 540 of FIG. 5 .

12 is a diagram illustrating a process of setting a retransmission path of an electronic device according to various embodiments.

Referring to FIG. 12 , a plurality of electronic devices 1210 to 1240 are included in a group (Group 1) for multi-party video communication, and each of the plurality of electronic devices 1210 to 1240 (or each source stream) A transmission path can be set. According to various embodiments, the first transmission path 1201 may be a path through which the first electronic device 1210 transmits a data stream to each of the second to fourth electronic devices 1220 to 1240 . According to various embodiments, a direct connection is possible between the first electronic device 1210 and the second electronic device 1220, and the first electronic device 1210, the third electronic device 1230, and the fourth electronic device 1240 When a direct connection is impossible, each of the third electronic device 1230 and the fourth electronic device 1240 may receive a data stream of the first electronic device 1210 from the second electronic device 1220 . According to various embodiments, the second transmission path 1202 is a data stream from the second electronic device 1220 to the first electronic device 1210, the third electronic device 1230, and the fourth electronic device 1240, respectively. It may be a path to transmit. According to various embodiments, a direct connection is possible between the second electronic device 1210, the first electronic device 1210, and the third electronic device 1230, and the second electronic device 1220 and the fourth electronic device 1240 When a direct connection is impossible, the fourth electronic device 1240 may receive the data stream of the second electronic device 1220 from the third electronic device 1230 .

According to various embodiments, a group management server (eg, the group management server 570 of FIG. 5 ) determines each electronic device whenever an electronic device joins a device group (eg, Group 1) for multi-party video communication. A transmission path for each stream may be determined, and a transmission path for each stream of each electronic device may be updated. According to various embodiments, the group management server (eg, the group management server 570 of FIG. 5 ) is configured for each stream updated by electronic devices included in a device group (eg, Group 1) for multi-party video communication. It can provide information about the transmission path. According to various embodiments, a group management server (eg, the group management server 570 of FIG. 5) may create and manage a virtual room for each stream source to create a retransmission path for each source stream. there is. According to various embodiments, an electronic device joining a device group (eg, Group 1) for multilateral video communication determines an optimal transmission path for each of the other electronic devices, and transmits information about the determined optimal transmission path to the group. It can be transmitted to the management server (eg, the group management server 570 of FIG. 5).

13 is a diagram illustrating a process in which an electronic device transmits and receives a data stream via a server according to various embodiments.

Referring to FIG. 13 , a server 1300 may process both upstream data and downstream data of electronic devices 1310 to 1340 for multilateral image communication. According to various embodiments, upstream data is data transmitted from each of the electronic devices 1310 to 1340 to the server 1300, and downstream data is data transmitted from the server 1300 to the electronic devices 1310 to 1300. 1340) is the data transmitted to each. According to various embodiments, the server 1300 may be implemented as a TURN server (eg, TURN server 330 of FIG. 3 , TURN server 430 of FIG. 4 , or TURN server 540 of FIG. 5 ). . According to various embodiments, the server 1300 receives a total of 4 upstream data from each of the electronic devices 1310 to 1340, and receives a total of 12 downstream data from each of the electronic devices 1310 to 1340. ) data can be transmitted. According to various embodiments, the first electronic device 1310 may receive data streams of other electronic devices 1320 to 1340 through the server 1300 . According to various embodiments, the second electronic device 1320 may receive data streams from other electronic devices 1310 and 1330 to 1340 through the server 1300 .

FIG. 14A is a diagram showing whether each electronic device in a group for multilateral video communication performs direct communication according to various embodiments, and FIG. 14B shows data stream transmission and reception by an electronic device through a server and other electronic devices according to various embodiments. It is a diagram showing the process.

Referring to FIG. 14A , a plurality of electronic devices (A to D) are included in a group for multilateral image communication, and a first electronic device (A) 1410 directly directs only a second electronic device (B) 1420. Connection is possible, and the third electronic device (C) 1430 may be directly connected only to the fourth electronic device (D) 1440 .

Referring to FIG. 14B , a method of performing direct communication between electronic devices capable of direct connection in a group for multilateral video communication can reduce radio resource and service cost compared to the method of FIG. 13 in which all data streams pass through a server. . According to various embodiments, upstream data is data transmitted from each of the electronic devices 1410 to 1440 to the server 1400, and downstream data is data transmitted from the server 1400 to the electronic devices 1410 to 1410. 1440) is the data transmitted to each. According to various embodiments, the server 1400 may be implemented as a TURN server (eg, TURN server 330 of FIG. 3 , TURN server 430 of FIG. 4 , or TURN server 540 of FIG. 5 ). . According to various embodiments, the first electronic device (A) 1410 can directly connect only to the second electronic device (B) 1420, and the first electronic device (A) 1410 transmits its own stream data. The server 1400 and the second electronic device (B) 1420 transmit the data, and the second electronic device (B) 1420 transmits its stream data to the server 1400 and the first electronic device (A) 1410. can be sent to According to various embodiments, the third electronic device (C) 1430 can directly connect only the fourth electronic device (D) 1440, and the third electronic device (C) 1430 transmits its own stream data. The server 1400 and the fourth electronic device (D) 1440 transmit the data, and the fourth electronic device (D) 1440 transmits its stream data to the server 1400 and the third electronic device (C) 1430. can be sent to

According to various embodiments, the first electronic device (A) 1410 receives stream data of each of the third electronic device (C) 1430 and the fourth electronic device (D) 1440 from the server 1400. can According to various embodiments, the second electronic device (B) 1420 is a third electronic device (C) 1430 and a fourth electronic device from the first electronic device (A) 1410 other than the server 1400 ( D) 1440 may receive each stream data. According to various embodiments, the third electronic device (C) 1410 receives stream data of each of the first electronic device (A) 1410 and the second electronic device (B) 1420 from the server 1400. can According to various embodiments, the fourth electronic device (D) 1440 is a server 1400, but from the third electronic device (C) 1430, the first electronic device (A) 1410 and the second electronic device ( B) 1420 may receive each stream data.

FIG. 15A is a diagram showing whether electronic devices in a group for multilateral video communication perform direct communication according to various embodiments, and FIG. 15B shows data stream transmission and reception by an electronic device through a server and other electronic devices according to various embodiments. It is a diagram showing the process.

Referring to FIG. 15A , a plurality of electronic devices (A to D) are included in a group for multilateral image communication, and a first electronic device (A) 1410, a second electronic device (B) 1420, and Each of the fourth electronic devices (D) 1440 may be directly connected to each other, and may not be directly connected to the third electronic device (C) 1430 .

Referring to FIG. 15B, a method of performing direct communication between electronic devices capable of direct connection in a group for multilateral video communication can reduce wireless resources and service costs compared to the method of FIG. 13 in which all data streams pass through a server. . According to various embodiments, upstream data is data transmitted from each of the electronic devices 1510 to 1440 to the server 1500, and downstream data is data transmitted from the server 1500 to the electronic devices 1510 to 1500. 1540) is the data transmitted to each. According to various embodiments, the server 1500 may be implemented as a TURN server (eg, TURN server 330 of FIG. 3 , TURN server 430 of FIG. 4 , or TURN server 540 of FIG. 5 ). . According to various embodiments, the first electronic device (A) 1510 transmits its own stream data to the server 1500, the second electronic device (B) 1520, and the fourth electronic device (D) 1540. can transmit According to various embodiments, the second electronic device (B) 1520 transmits its own stream data to the server 1500, the first electronic device (A) 1510, and the fourth electronic device (D) 1540. can transmit According to various embodiments, the fourth electronic device (D) 1540 transmits its own stream data to the server 1500, the first electronic device (A) 1510, and the second electronic device (B) 1520. can transmit According to various embodiments, the third electronic device (D) 1540 may transmit its own stream data to the server 1500 .

According to various embodiments, the first electronic device (A) 1510 directly receives stream data from the second electronic device (B) 1520 and the fourth electronic device (D) 1540, and the server 1500 ), stream data of the third electronic device (D) 1540 may be received. According to various embodiments, the second electronic device (B) 1520 directly receives stream data from the first electronic device (A) 1510 and the fourth electronic device (D) 1540, and the first electronic device Stream data of the third electronic device (D) 1540 may be received from (A) 1510 . According to various embodiments, the fourth electronic device (D) 1540 directly receives stream data from the first electronic device (A) 1510 and the second electronic device (B) 1520, and the first electronic device Stream data of the third electronic device (D) 1540 may be received from (A) 1510 . According to various embodiments, the third electronic device (D) 1540 includes first electronic device (A) 1510, second electronic device (B) 1520, and fourth electronic device (D) from the server 1500. ) (1540) Each stream data may be received.

16 is a diagram illustrating an operating method of an electronic device according to various embodiments.

Referring to FIG. 16 , in step 1610, an electronic device (eg, the electronic devices 510 and 512 of FIG. 5 , the electronic device 601 of FIG. 6 , and the electronic device 710 of FIG. 7 ) includes a plurality of external electronic devices. Identification information and communication information of an electronic device are sent to a first server (eg, the group management server 570 in FIG. 5 or the second server 730 in FIG. 7) for video communication with a device group including devices. and receive communication information about the device group from the first server. In step 1620, the electronic device may check whether at least one external electronic device belonging to the device group and capable of direct communication with the electronic device exists. In step 1620, if at least one external electronic device capable of direct communication with the electronic device exists (1620-Yes), in step 1630, the electronic device provides a first path for data communication with the at least one external electronic device and the external electronic device. At least one of the second paths for data communication with another electronic device may be identified through at least one external electronic device. In step 1620, if at least one external electronic device capable of direct communication with the electronic device does not exist (1620-No), in step 1640, the electronic device transmits data streams of the plurality of external electronic devices to a second server (for example, , may be obtained from the TURN server 540 of FIG. 5 and the first server 720 of FIG. 7 . In step 1650, the electronic device may transmit/receive a data stream based on at least one of the first path and the second path.

510, 512, 601, 710: electronic device
690, 712: communication module
620, 716: processor
720: first server
730: second server

Claims (20)

In electronic devices,
communication module; and
at least one processor coupled to the communication module;
The at least one processor,
Transmitting identification information and communication information of the electronic device to a first server for video communication with a device group including a plurality of external electronic devices, and receiving communication information about the device group from the first server;
Checking existence of at least one external electronic device that belongs to the device group and is capable of direct communication with the electronic device based on the communication information for the device group;
If the at least one external electronic device capable of direct communication with the electronic device exists, a first path for data communication with the at least one external electronic device and data with other electronic devices through the at least one external electronic device identify at least one of the second paths for communication;
An electronic device configured to transmit and receive a data stream based on at least one of the first path and the second path. The method of claim 1, wherein the at least one processor,
Wherein the electronic device is configured to acquire data streams of the plurality of external electronic devices from a second server when the at least one external electronic device capable of direct communication with the electronic device does not exist. According to claim 2,
the first server is a server that manages the device group;
The second server is a TURN (Traversal Using Relays around NAT) server. The method of claim 1, wherein the at least one processor,
Transmitting a data stream of the electronic device to a first external electronic device belonging to the device group based on the first path;
The electronic device configured to receive a data stream of the first external electronic device from the first external electronic device based on the first path. The method of claim 1, wherein the at least one processor,
Transmitting the data stream of the electronic device to a second external electronic device belonging to the device group based on the second path to deliver the data stream of the electronic device to the first external electronic device belonging to the device group;
The electronic device configured to receive a data stream of the first external electronic device from the second external electronic device based on the second path. The method of claim 1, wherein the at least one processor,
The electronic device is configured to determine the at least one external electronic device capable of direct communication with the electronic device based on at least one of a number of retransmissions of a data stream and a number of transmissions of an electronic device performing retransmission. The method of claim 1, wherein the at least one processor,
The electronic device configured to transmit information on at least one of the first route and the second route to the first server. A server managing a device group including a plurality of electronic devices,
communication module; and
at least one processor coupled to the communication module;
The at least one processor,
Receiving identification information and communication information of an electronic device for video communication with a device group including a plurality of external electronic devices from the electronic device;
Transmitting communication information for the device group to the electronic device;
The server is configured to receive, from the electronic device, information about at least one external electronic device determined to be capable of direct communication with the electronic device based on the communication information about the device group. The method of claim 8, wherein the at least one processor,
Updating a transmission/reception path for the plurality of external electronic devices included in the device group based on the information on the at least one external electronic device;
A server configured to transmit information on an updated transmission/reception path to the electronic device. According to claim 8,
The server, wherein the at least one external electronic device capable of direct communication with the electronic device is determined based on at least one of a number of retransmissions of a data stream and a number of transmissions of an electronic device performing retransmission. In the operating method of the electronic device,
Transmitting identification information and communication information of the electronic device to a first server for video communication with a device group including a plurality of external electronic devices, and receiving communication information about the device group from the first server;
checking whether at least one external electronic device belonging to the device group and capable of direct communication with the electronic device exists based on the communication information about the device group;
If the at least one external electronic device capable of direct communication with the electronic device exists, a first path for data communication with the at least one external electronic device and data with other electronic devices through the at least one external electronic device identifying at least one of the second paths for communication; and
and transmitting and receiving a data stream based on at least one of the first path and the second path. According to claim 11,
The method further comprising obtaining data streams of the plurality of external electronic devices from a second server if the at least one external electronic device capable of direct communication with the electronic device does not exist. According to claim 12,
the first server is a server that manages the device group;
The second server is a TURN (Traversal Using Relays around NAT) server. According to claim 11,
transmitting a data stream of the electronic device to a first external electronic device belonging to the device group based on the first path; or
The method further comprising receiving a data stream of the first external electronic device from the first external electronic device based on the first path. According to claim 11,
transmitting the data stream of the electronic device to a second external electronic device belonging to the device group based on the second path so as to transfer the data stream of the electronic device to the first external electronic device belonging to the device group; ; or
and receiving a data stream of the first external electronic device from the second external electronic device based on the second path. According to claim 11,
The method further comprising determining the at least one external electronic device capable of direct communication with an electronic device based on at least one of a number of retransmissions of a data stream and a number of transmissions of an electronic device performing retransmission. According to claim 11,
The method further comprising transmitting information on at least one of the first route and the second route to the first server. A method of operating a server that manages a device group including a plurality of electronic devices,
Receiving identification information and communication information of an electronic device for image communication with a device group including a plurality of external electronic devices from the electronic device;
transmitting communication information about the device group to the electronic device; and
and receiving, from the electronic device, information about at least one external electronic device determined to be capable of direct communication with the electronic device based on the communication information about the device group. According to claim 18,
updating transmission/reception paths for the plurality of external electronic devices included in the device group based on the information on the at least one external electronic device; and
The method further comprising transmitting information on the updated transmission/reception path to the electronic device. According to claim 18,
The at least one external electronic device capable of direct communication with the electronic device is determined based on at least one of a number of retransmissions of a data stream and a number of transmissions of an electronic device performing retransmission.

Images