WO2022114662A1 - Dispositif électronique conçu pour assurer une fonction d'appel et procédé de fonctionnement dudit dispositif - Google Patents

Dispositif électronique conçu pour assurer une fonction d'appel et procédé de fonctionnement dudit dispositif Download PDF

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Publication number
WO2022114662A1
WO2022114662A1 PCT/KR2021/016925 KR2021016925W WO2022114662A1 WO 2022114662 A1 WO2022114662 A1 WO 2022114662A1 KR 2021016925 W KR2021016925 W KR 2021016925W WO 2022114662 A1 WO2022114662 A1 WO 2022114662A1
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WIPO (PCT)
Prior art keywords
network
communication
electronic device
call connection
emergency service
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PCT/KR2021/016925
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English (en)
Korean (ko)
Inventor
이수민
송인재
이경훈
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삼성전자 주식회사
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Publication of WO2022114662A1 publication Critical patent/WO2022114662A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0058—Transmission of hand-off measurement information, e.g. measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/305—Handover due to radio link failure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H04W60/005—Multiple registrations, e.g. multihoming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/08—Upper layer protocols
    • H04W80/10—Upper layer protocols adapted for application session management, e.g. SIP [Session Initiation Protocol]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H04W36/144—Reselecting a network or an air interface over a different radio air interface technology
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength

Definitions

  • Various embodiments of the present invention relate to an apparatus and method for providing a call function in an electronic device.
  • the 5G communication system or the pre-5G communication system is called a 4G network after (Beyond 4G Network) communication system or an LTE system after (Post LTE) communication system.
  • the 5G communication system uses a band of 6 gigabytes (6 GHz) or less (eg about 1.8 gigabytes (1.8 GHz) band or about 3.5 gigabytes (3.5 GHz) band) or higher frequency bands (e.g. about approx. Implementation in the 28 gigabyte (28 GHz) band or about 39 giga (GHz) band is being considered.
  • the 5G communication system uses beamforming, massive MIMO, full dimensional MIMO (FD-MIMO), and array antennas to mitigate the path loss of radio waves and increase the propagation distance of radio waves.
  • array antenna array antenna
  • analog beam-forming analog beam-forming
  • large-scale antenna large scale antenna
  • the network of the 5th generation communication method eg, new radio (NR) communication
  • LTE long term evolution
  • SA stand-alone
  • voice related A call function eg, an IP multimedia subsystem (IMS) voice service
  • IMS IP multimedia subsystem
  • QoS quality of service
  • the electronic device may transmit a message (eg, session initiation protocol (SIP) invite) for call connection to the IMS module through the 5G communication network.
  • a message eg, session initiation protocol (SIP) invite
  • the electronic device When the electronic device receives a message (eg, SIP error) related to the failure of a call connection from the 5G communication network, it retrys a call connection with an external electronic device through the 5G communication network (call retry) can do. For example, when the electronic device determines that the call connection has failed based on the message related to the failure of the call connection received from the IMS module, the electronic device cannot clearly recognize the cause of the call connection failure. When it is determined that the call connection has failed, the electronic device may transmit a call connection message back to the IMS module through the 5G communication network.
  • a message eg, SIP error
  • Various embodiments of the present invention disclose an apparatus and method for providing a call function in an electronic device.
  • an electronic device includes a wireless communication circuit supporting new radio (NR) communication and/or long term evolution (LTE) communication and at least one processor operatively connected to the wireless communication circuit, , when the processor registers with the first network of the NR communication through the wireless communication circuit, performs a call connection with an external electronic device through the first network, and fails to connect with the external electronic device , check at least one of emergency service support information or emergency service fallback support information related to the NR communication, and, when the first network of the NR communication supports the emergency service fallback, a call connection method fallback method, and the call connection with the external electronic device may be re-established through the fallback method.
  • NR new radio
  • LTE long term evolution
  • an electronic device includes a wireless communication circuit supporting new radio (NR) communication and/or long term evolution (LTE) communication and at least one processor operatively connected to the wireless communication circuit, , when the processor registers with the first network of the NR communication through the wireless communication circuit, performs a call connection with an external electronic device through the first network, and fails to connect with the external electronic device , check at least one of emergency service support information or emergency service fallback support information related to the NR communication, and the first network connected to the core network of the NR communication does not support emergency service and emergency service fallback, and the NR
  • a network switching method is selected as the call connection method, and communication with the external electronic device is performed based on the network switching method The call connection can be made again.
  • a method of operating an electronic device supporting new radio (NR) communication and/or long term evolution (LTE) communication performs a call connection with an external electronic device through a first network of the NR communication. and when the call connection with the external electronic device fails, checking at least one of emergency service support information or emergency service fallback support information related to the NR communication;
  • the method may include determining a call connection method as a fallback method and performing a call connection with the external electronic device again based on the fallback method.
  • an electronic device when an electronic device fails to connect a call with an external electronic device through a network of a 5G communication method (eg, NR communication), information related to an emergency service of the 5G communication method (eg: By determining a method for retrying a call connection based on an emergency service support indicator (EMC) and/or an emergency services fallback indicator (EMF), a call connection delay may be reduced.
  • EMC emergency service support indicator
  • EMF emergency services fallback indicator
  • FIG. 1 is a block diagram of an electronic device in a network environment, according to various embodiments of the present disclosure
  • FIG. 2 is a block diagram of an electronic device for supporting legacy network communication and 5G network communication, according to various embodiments of the present disclosure
  • 3 is a diagram illustrating a protocol stack structure of the network 100 of 4G communication and/or 5G communication according to various embodiments of the present disclosure.
  • 4A is a diagram illustrating wireless communication systems that provide a network of 4G communication and/or 5G communication according to various embodiments of the present disclosure
  • 4B is a diagram illustrating wireless communication systems that provide a network of 4G communication and/or 5G communication according to various embodiments.
  • FIG. 5 is a block diagram of an electronic device for providing a call function according to various embodiments of the present disclosure
  • FIG. 6 is a flowchart for setting a call connection method in an electronic device according to various embodiments of the present disclosure
  • FIG. 7 is a flowchart illustrating a call connection attempt using a fallback method in an electronic device according to various embodiments of the present disclosure
  • FIG. 10 is a flowchart for changing a communication system for a call connection in an electronic device according to various embodiments of the present disclosure
  • 11 is an example for changing to a second wireless communication system for a call connection in an electronic device according to various embodiments of the present disclosure
  • FIG. 13 is a flowchart for changing a network for a call connection in an electronic device 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 of the present disclosure.
  • 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 the electronic device 104 or 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) 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
  • NPU neural processing unit
  • an image signal processor e.g., 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
  • NPU neural processing unit
  • an image signal processor e.g., 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
  • the auxiliary processor 123 is, for example, on behalf of the main processor 121 while the main processor 121 is in an inactive (eg, sleep) state, or 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 artificial intelligence 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, 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 of the electronic device 101 (eg, the processor 120 or the sensor module 176 ).
  • 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 in 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 may be used to receive an incoming call. 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 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 ) directly or wirelessly connected to the electronic device 101 . A sound may be output through the electronic device 102 (eg, a speaker or headphones).
  • an external electronic device eg, a sound output module 155
  • a sound may be output through the electronic device 102 (eg, a speaker or headphones).
  • the sensor module 176 detects an operating state (eg, power or temperature) of the electronic device 101 or an external environmental state (eg, 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 designated 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.
  • HDMI high definition multimedia interface
  • USB universal serial bus
  • SD card interface Secure Digital Card
  • 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 LAN (local area network) communication module, or a power line communication module).
  • GNSS global navigation satellite system
  • 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 the 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 .
  • 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 includes high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and access to multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low-latency) -latency communications)).
  • eMBB enhanced mobile broadband
  • mMTC massive machine type communications
  • URLLC ultra-reliable and low-latency
  • 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), 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 may include 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).
  • the subscriber identification module 196 may include a plurality of subscriber identification modules. For example, the plurality of subscriber identification modules may store different subscriber information.
  • 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 selected from a plurality of antennas by, for example, the communication module 190 . can be A signal or power may be transmitted or received between the communication module 190 and an external electronic device through at least one selected 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, underside) of the printed circuit board and capable of supporting a designated high frequency band (eg, mmWave band), and It may include 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 a designated high frequency band. .
  • 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.
  • 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 be used simply to distinguish the element from other elements in question, and may refer to elements in 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, for example, used interchangeably with terms such as 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 machine eg, electronic device 101
  • a processor eg, processor 120
  • a device eg, 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 include 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 included in a computer program product and provided.
  • 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 via an application store (eg Play Store TM ) or on two user devices ( It can be distributed online (eg download or upload), directly between smartphones (eg smartphones).
  • a part of the computer program product may be temporarily stored or temporarily generated 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. .
  • 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, omitted, or , or one or more other operations may be added.
  • FIG. 2 is a block diagram 200 of an electronic device 101 for supporting legacy network communication and 5G network communication, according to various embodiments of the present disclosure.
  • the electronic device 101 includes a first communication processor 212 , a second communication processor 214 , a first radio frequency integrated circuit (RFIC) 222 , and a second RFIC 224 , a third RFIC 226 , a fourth RFIC 228 , a first radio frequency front end (RFFE) 232 , a second RFFE 234 , a first antenna module 242 , a second antenna module 244 , and an antenna 248 .
  • the electronic device 101 may further include a processor 120 and a memory 130 .
  • the network 199 may include a first network 292 and a second network 294 .
  • the electronic device 101 may further include at least one component among the components illustrated in FIG. 1
  • the network 199 may further include at least one other network.
  • a first communication processor 212 , a second communication processor 214 , a first RFIC 222 , a second RFIC 224 , a fourth RFIC 228 , a first RFFE 232 , and the second RFFE 234 may form at least a part of the wireless communication module 192 .
  • the fourth RFIC 228 may be omitted or may be included as a part of the third RFIC 226 .
  • the first communication processor 212 may support establishment of a communication channel of a band to be used for wireless communication with the first network 292 and legacy network communication through the established communication channel.
  • the first network may be a legacy network including a second generation (2G), 3G, 4G, or long term evolution (LTE) network.
  • the second communication processor 214 establishes a communication channel corresponding to a designated band (eg, about 6 GHz to about 60 GHz) among bands to be used for wireless communication with the second network 294 , and 5G network communication through the established communication channel can support
  • the second network 294 may be a 5G network (eg, new radio (NR)) defined by 3GPP.
  • NR new radio
  • the first communication processor 212 or the second communication processor 214 is configured to correspond to another designated band (eg, about 6 GHz or less) among bands to be used for wireless communication with the second network 294 . It is possible to support establishment of a communication channel, and 5G network communication through the established communication channel.
  • the first communication processor 212 and the second communication processor 214 may be implemented in a single chip or a single package.
  • the first communication processor 212 or the second communication processor 214 may be formed in a single chip or a single package with the processor 120 , the coprocessor 123 , or the communication module 190 . .
  • the first communication processor 212 may transmit/receive data to and from the second communication processor 214 .
  • data classified to be transmitted through the second network 294 may be changed to be transmitted through the first network 292 .
  • the first communication processor 212 may receive transmission data from the second communication processor 214 .
  • the first communication processor 212 may transmit and receive data through the interface between the second communication processor 214 and the processor.
  • the interprocessor interface may be implemented as a universal asynchronous receiver/transmitter (UART) (eg, high speed-UART (HS-UART)) or a peripheral component interconnect bus express (PCIe) interface, but there is no limitation on the type .
  • UART universal asynchronous receiver/transmitter
  • PCIe peripheral component interconnect bus express
  • the first communication processor 212 and the second communication processor 214 may exchange control information and packet data information using a shared memory.
  • the first communication processor 212 may transmit/receive various information such as sensing information, information on output strength, and resource block (RB) allocation information with the second communication processor 214 .
  • RB resource block
  • the first communication processor 212 may not be directly coupled to the second communication processor 214 .
  • the first communication processor 212 may transmit and receive data through the second communication processor 214 and the processor 120 (eg, an application processor).
  • the first communication processor 212 and the second communication processor 214 may transmit and receive data with the processor 120 (eg, an application processor) through the HS-UART interface or the PCIe interface, but There is no restriction on the type.
  • the first communication processor 212 and the second communication processor 214 may exchange control information and packet data information using a shared memory with the processor 120 (eg, an application processor).
  • the first communication processor 212 and the second communication processor 214 may be implemented in a single chip or a single package.
  • the first communication processor 212 or the second communication processor 214 may be formed in a single chip or a single package with the processor 120 , the co-processor 123 , or the communication module 190 . .
  • the first RFIC 222 when transmitting, transmits a baseband signal generated by the first communication processor 212 to about 700 MHz to about 3 GHz used in the first network 292 (eg, a legacy network). can be converted to a radio frequency (RF) signal of Upon reception, an RF signal is obtained from a first network 292 (eg, a legacy network) via an antenna (eg, a first antenna module 242 ) and via an RFFE (eg, a first RFFE 232 ). It may be preprocessed. The first RFIC 222 may convert the preprocessed RF signal into a baseband signal to be processed by the first communication processor 212 .
  • RF radio frequency
  • the second RFIC 224 when transmitting, transmits the baseband signal generated by the first communication processor 212 or the second communication processor 214 to the second network 294 (eg, a 5G network). It can be converted into an RF signal (hereinafter, 5G Sub6 RF signal) of the Sub6 band (eg, about 6 GHz or less).
  • 5G Sub6 RF signal RF signal
  • a 5G Sub6 RF signal is obtained from the second network 294 (eg, 5G network) via an antenna (eg, second antenna module 244 ), and RFFE (eg, second RFFE 234 ) can be pre-processed.
  • the second RFIC 224 may convert the preprocessed 5G Sub6 RF signal into a baseband signal to be processed by a corresponding one of the first communication processor 212 or the second communication processor 214 .
  • the third RFIC 226 transmits the baseband signal generated by the second communication processor 214 to the RF of the 5G Above6 band (eg, about 6 GHz to about 60 GHz) to be used in the second network 294 (eg, 5G network). It can be converted into a signal (hereinafter referred to as 5G Above6 RF signal).
  • a 5G Above6 RF signal may be obtained from the second network 294 (eg, 5G network) via an antenna (eg, antenna 248 ) and pre-processed via a third RFFE 236 .
  • the third RFIC 226 may convert the preprocessed 5G Above6 RF signal into a baseband signal to be processed by the second communication processor 214 .
  • the third RFFE 236 may be formed as part of the third RFIC 226 .
  • the electronic device 101 may include the fourth RFIC 228 separately from or as at least a part of the third RFIC 226 .
  • the fourth RFIC 228 converts the baseband signal generated by the second communication processor 214 into an RF signal (hereinafter, IF signal) of an intermediate frequency band (eg, about 9 GHz to about 11 GHz). After conversion, the IF signal may be transmitted to the third RFIC 226 .
  • the third RFIC 226 may convert the IF signal into a 5G Above6 RF signal.
  • a 5G Above6 RF signal may be received from the second network 294 (eg, 5G network) via an antenna (eg, antenna 248 ) and converted to an IF signal by a third RFIC 226 .
  • the fourth RFIC 228 may convert the IF signal into a baseband signal for processing by the second communication processor 214 .
  • the first RFIC 222 and the second RFIC 224 may be implemented as at least a part of a single chip or a single package.
  • the first RFFE 232 and the second RFFE 234 may be implemented as at least a part of a single chip or a single package.
  • at least one antenna module of the first antenna module 242 or the second antenna module 244 may be omitted or may be combined with another antenna module to process RF signals of a plurality of corresponding bands.
  • the third RFIC 226 and the antenna 248 may be disposed on the same substrate to form the third antenna module 246 .
  • the wireless communication module 192 or the processor 120 may be disposed on the first substrate (eg, main PCB).
  • the third RFIC 226 is located in a partial area (eg, the bottom surface) of the second substrate (eg, sub PCB) separate from the first substrate, and the antenna 248 is located in another partial region (eg, the top surface). is disposed, the third antenna module 246 may be formed.
  • a high-frequency band eg, about 6 GHz to about 60 GHz
  • the electronic device 101 may improve the quality or speed of communication with the second network 294 (eg, a 5G network).
  • the antenna 248 may be formed as an antenna array including a plurality of antenna elements that may be used for beamforming.
  • the third RFIC 226 may include, for example, as a part of the third RFFE 236 , a plurality of phase shifters 238 corresponding to the plurality of antenna elements.
  • each of the plurality of phase shifters 238 may transform the phase of a 5G Above6 RF signal to be transmitted to the outside of the electronic device 101 (eg, a base station of a 5G network) through a corresponding antenna element. .
  • each of the plurality of phase shifters 238 may convert the phase of the 5G Above6 RF signal received from the outside through the corresponding antenna element into the same or substantially the same phase. This enables transmission or reception through beamforming between the electronic device 101 and the outside.
  • the second network 294 may be operated independently (eg, stand-alone (SA)) or connected to the first network 292 (eg, legacy network) (eg: non-stand alone (NSA)).
  • the 5G network may have only an access network (eg, a 5G radio access network (RAN) or a next generation RAN (NG RAN)), and may not have a core network (eg, a next generation core (NGC)).
  • the electronic device 101 may access an external network (eg, the Internet) under the control of a core network (eg, evolved packed core (EPC)) of the legacy network.
  • Protocol information for communication with a legacy network eg, LTE protocol information
  • protocol information for communication with a 5G network eg, new radio (NR) protocol information
  • other components eg, processor 120 , the first communication processor 212 , or the second communication processor 214 .
  • 3 is a diagram illustrating a protocol stack structure of the network 100 of 4G communication and/or 5G communication according to various embodiments of the present disclosure.
  • the network 100 may include an electronic device 101 , a 4G network 392 , a 5G network 394 , and a server 108 .
  • the electronic device 101 may include an Internet protocol 312 , a first communication protocol stack 314 , and a second communication protocol stack 316 .
  • the electronic device 101 may communicate with the server 108 via the 4G network 392 and/or the 5G network 394 .
  • the electronic device 101 communicates with the server 108 using an internet protocol 312 (eg, transmission control protocol (TCP), user datagram protocol (UDP), and internet protocol (IP)).
  • an internet protocol 312 eg, transmission control protocol (TCP), user datagram protocol (UDP), and internet protocol (IP)
  • TCP transmission control protocol
  • UDP user datagram protocol
  • IP internet protocol
  • Associated Internet communication may be performed.
  • the Internet protocol 312 may be executed in a main processor (eg, the main processor 121 of FIG. 1 ) included in the electronic device 101 .
  • the electronic device 101 may wirelessly communicate with the 4G network 392 using the first communication protocol stack 314 .
  • the electronic device 101 may wirelessly communicate with the 5G network 394 using the second communication protocol stack 316 .
  • the first communication protocol stack 314 and the second communication protocol stack 316 may be executed in one or more communication processors (eg, the wireless communication module 192 of FIG. 1 ) included in the electronic device 101 . have.
  • server 108 may include Internet protocol 322 .
  • the server 108 may transmit/receive data related to the electronic device 101 and the Internet protocol 322 through the 4G network 392 and/or the 5G network 394 .
  • the server 108 may include a cloud computing server residing outside the 4G network 392 or the 5G network 394 .
  • the server 108 may include an edge computing server (or mobile edge computing (MEC) server) located inside at least one of the 4G network 392 or the 5G network 394 .
  • MEC mobile edge computing
  • the 5G network 394 may include a new radio (NR) base station 350 and a 5th generation core (5GC) 352 .
  • the NR base station 350 may include an NR communication protocol stack 354 .
  • 5GC 352 may include 5G NAS protocol 356 .
  • the 5G network 394 may perform NR wireless communication with the electronic device 101 using the NR communication protocol stack 354 and the 5G NAS protocol 356 .
  • the first communication protocol stack 314 , the second communication protocol stack 316 , the LTE communication protocol stack 344 and the NR communication protocol stack 354 include a control plane protocol for sending and receiving control messages and It may include a user plane protocol for transmitting and receiving user data.
  • the control message may include a message related to at least one of security control, bearer establishment, authentication, registration, or mobility management.
  • the user data may include data other than the control message.
  • control plane protocol and the user plane protocol may include physical (PHY), medium access control (MAC), radio link control (RLC), or packet data convergence protocol (PDCP) layers.
  • PHY physical
  • MAC medium access control
  • RLC radio link control
  • PDCP packet data convergence protocol
  • the PHY layer channel-codes and modulates data received from a higher layer (e.g., MAC layer) to transmit it to a radio channel, and demodulates and decodes data received through the radio channel to deliver it to the upper layer.
  • the PHY layer included in the second communication protocol stack 316 and the NR communication protocol stack 354 may further perform an operation related to beam forming.
  • the MAC layer may logically/physically map a radio channel through which data is to be transmitted/received, and may perform hybrid automatic repeat request (HARQ) for error correction.
  • HARQ hybrid automatic repeat request
  • the RLC layer may concatenate, segment, or reassemble data, and perform order check, rearrangement, or redundancy check of data.
  • the PDCP layer may perform operations related to ciphering of control data and user data and data integrity.
  • the second communication protocol stack 316 and the NR communication protocol stack 354 may further include a service data adaptation protocol (SDAP).
  • SDAP may manage radio bearer assignment based on quality of service (QoS) of user data.
  • QoS quality of service
  • the control plane protocol may include a radio resource control (RRC) layer and a non-access stratum (NAS) layer.
  • RRC radio resource control
  • NAS non-access stratum
  • the RRC layer may process control data related to radio bearer setup, paging, or mobility management.
  • the NAS may process control messages related to authentication, registration, and mobility management.
  • the electronic device 101 may include a plurality of subscriber identification modules (eg, a first subscriber identification module and a second subscriber identification module). According to an embodiment, the electronic device 101 based on subscriber information (eg, international mobile subscriber identity (IMSI)) stored in each of a plurality of subscriber identification modules (eg, a first subscriber identification module and a second subscriber identification module). to communicate with the 4G network 392 and/or the 5G network 394 .
  • subscriber information eg, international mobile subscriber identity (IMSI)
  • the electronic device 101 may further include a third communication protocol stack (not shown) and a fourth communication protocol stack (not shown) to support a plurality of subscriber identification modules.
  • the third communication protocol stack may correspond to the first communication protocol stack 314 and include various protocols for wireless communication with the 4G network 392 .
  • the fourth communication protocol stack may correspond to the second communication protocol stack 316 and include various protocols for wireless communication with the 5G network 394 .
  • the electronic device 101 when performing communication using the first subscriber identification module, the electronic device 101 performs wireless communication with the 4G network 392 using the first communication protocol stack 314 and 2 It is possible to perform wireless communication with the 5G network 394 using the communication protocol stack 316 .
  • the electronic device 101 when performing communication using the second subscriber identification module, performs wireless communication with the 4G network 392 using the third communication protocol stack, and the fourth communication protocol The stack may be used to perform wireless communication with the 5G network 394 .
  • 4A and 4B are diagrams illustrating wireless communication systems that provide a network of 4G communication and/or 5G communication according to various embodiments.
  • the network environments 100A to 100B may include at least one of a 4G network or a 5G network.
  • the 4G network includes an LTE base station 440 (eg, eNB (eNodeB)) of the 3GPP standard that supports the electronic device 101 and wireless connection and an evolved packet core (EPC) 442 that manages 4G communication. ) may be included.
  • the 5G network includes a new radio (NR) base station 450 (eg, gNB (gNodeB)) that supports wireless connection with the electronic device 101 and 5GC that manages 5G communication between the electronic device 101 and the electronic device 101 .
  • NR new radio
  • the electronic device 101 may transmit and/or receive a control message and user data through 4G communication and/or 5G communication.
  • the control message is a message related to at least one of security control, bearer setup, authentication, registration, or mobility management of the electronic device 101 .
  • the user data may mean user data excluding a control message transmitted and received between the electronic device 101 and the core network 430 (eg, 5GC 452 ).
  • the network environment 100A provides wireless communication to the LTE base station 440 and the NR base station 450 , and the electronic device 101 through one core network 430 .
  • a network environment for sending and/or receiving control messages for example, the core network 430 may include a 5GC 452 .
  • the core network 430 may include the EPC 442 .
  • one of the LTE base station 440 or the NR base station 450 may operate as the first node 410 and the other may operate as the second node 420 .
  • the first node 410 and the second node 420 may be connected to the core network 430 to transmit/receive control messages and data.
  • the first node 410 may include an NR base station 450
  • the second node 420 may include an LTE base station 440
  • the core network 430 may include a 5GC 452 .
  • the electronic device 101 may transmit and/or receive a control message and/or user data with the core network 430 through the LTE base station 440 or the NR base station 450 .
  • a 4G network and a 5G network may each independently provide data transmission and/or reception.
  • the electronic device 101 and the EPC 442 may transmit and/or receive a control message and/or user data through the LTE base station 440 .
  • the electronic device 101 and the 5GC 452 may transmit and/or receive a control message and/or user data through the NR base station 450 .
  • the electronic device 101 may be registered with at least one of the EPC 442 and the 5GC 452 to transmit/receive a control message.
  • the EPC 442 or the 5GC 452 may interwork to manage communication of the electronic device 101 .
  • movement information of the electronic device 101 may be transmitted/received through an interface (eg, an N26 interface) between the EPC 442 and the 5GC 452 .
  • the first wireless communication may include a 5G communication method (eg, new radio (NR)).
  • the second wireless communication is a 4G communication scheme, and may include at least one of long-term evolution (LTE), LTE-advanced (LTE-A), or LTE advanced pro (LTE-A pro).
  • LTE long-term evolution
  • LTE-A LTE-advanced
  • LTE-A pro LTE advanced pro
  • the third wireless communication uses a 3G communication method (eg, wideband code division multiple access (WCDMA), or high speed packet access (HSPA)) or a second generation communication method (eg, CDMA or global system for mobile communication (GSM)).
  • WCDMA wideband code division multiple access
  • HSPA high speed packet access
  • GSM global system for mobile communication
  • FIG. 5 is a block diagram of an electronic device for setting a size of a communication buffer of a communication processor according to various embodiments of the present disclosure; According to an embodiment, the electronic device 101 of FIG. 5 is at least partially similar to the electronic device 101 of FIGS. 1 , 2 , 3 , 4A or 4B , or further includes other embodiments of the electronic device can do.
  • the electronic device 101 may include a processor 500 , a wireless communication circuit 510 , and/or a memory 520 .
  • the processor 500 may be substantially the same as the processor 120 of FIG. 1 , or may include the processor 120 .
  • the wireless communication circuit 510 may be substantially the same as the wireless communication module 192 of FIG. 1 , or may include the wireless communication module 192 .
  • the memory 520 may be substantially the same as the memory 130 of FIG. 1 or may include the memory 130 .
  • the processor 500 may be operatively coupled to the wireless communication circuit 510 and/or the memory 520 .
  • the processor 500 is an application processor (AP) (eg, the main processor 121 of FIG. 1 ) and/or a communication processor (CP) (eg, the auxiliary processor of FIG. 1 ). 123 or the communication module 190 of FIG. 1 ).
  • the communication processor may include a first processing part and a second processing part.
  • the first processing part may communicate with a first node (eg, the first node 410 of FIG. 4A ) of the first wireless communication method.
  • the first processing portion may transmit and/or receive a control message and/or data with the first node through a first wireless communication scheme.
  • the second processing part may perform wireless communication with a second node of the second wireless communication method (eg, the second node 420 of FIG. 4A ).
  • the second processing portion may transmit and/or receive a control message and/or data with the second node through a second wireless communication scheme.
  • the first processing part and the second processing part may be configured with software for processing signals and protocols of different frequency bands.
  • the first processing portion and the second processing portion may be configured with different circuits or different hardware.
  • the first processing part and the second processing part may be logically (eg, software) divided parts.
  • the processor 500 may control the wireless communication circuit 510 so that the electronic device 101 establishes a call with an external electronic device (eg, the electronic device 104 of FIG. 1 ).
  • the processor 500 performs a call function (eg, IP multimedia subsystem (IMS) voice service) based on a quality of service (QoS) flow related to a voice of the first wireless communication network.
  • a call function eg, IP multimedia subsystem (IMS) voice service
  • QoS quality of service
  • the processor 500 when the network of the first wireless communication supports a call function, transmits a message related to a call connection of an external electronic device (eg, session initiation protocol (SIP) invite) for the first wireless communication
  • the wireless communication circuit 510 may be controlled to transmit to a network of
  • the processor 500 receives a message (eg, 183 session progress) related to success of a call connection through the wireless communication circuit 510
  • the processor 500 communicates with an external electronic device through the network of the first wireless communication. can perform the calling function of
  • the processor 500 may set (or update) a call connection method with the external electronic device. .
  • the processor 500 receives a message (eg, SIP error) related to the failure of the call connection through the wireless communication circuit 510 , based on the message related to the failure of the call connection, the The cause of failure can be determined. For example, when the code included in the message related to the failure of the call connection is included in the specified first range (eg, 400 to 499), the processor 500 determines that the call connection fails by the IMS (IP multimedia subsystem) module.
  • IMS IP multimedia subsystem
  • the processor 500 determines that the call connection has failed by the IMS module, since it cannot determine the exact cause of the failure of the call connection, based on information related to the emergency service of the first wireless communication, the first wireless communication and/or the second 2 It is possible to estimate the network environment related to wireless communication.
  • the information related to the emergency service of the first wireless communication is a first wireless communication network (eg, the first wireless communication network 430 of FIG. 4A ) connected to the first wireless communication core network (eg, the first wireless communication network 430 of FIG. 4A ). node 410) and a second wireless communication network (eg, an emergency service support indicator (EMC) and/or an emergency services fallback indicator (EMF) of the second node 420 of FIG.
  • EMC emergency service support indicator
  • EMF emergency services fallback indicator
  • EMC and EMF may be identified based on "EMC” and/or "EMF" included in a "5GS network feature support" information element of a registration accept message (eg, registration accept) received from the network.
  • the network is a configuration that supports wireless communication with the electronic device 101 based on a wireless communication method, and may be referred to as a radio access network (RAN).
  • the core network may include a configuration for processing data related to the electronic device 101 accessed through the network in the wireless communication system and supporting connection with another network or another communication system.
  • the wireless communication system may include an entire system including a network and a core network for supporting wireless communication of the electronic device 101 .
  • the processor 500 determines a method for retrying a call connection with an external electronic device based on a network environment related to the first wireless communication estimated based on information related to the emergency service of the first wireless communication. It can be set (or updated).
  • the method of retrying the call connection may include at least one of a fallback method, a network switching method, and/or a communication system switching method.
  • a network eg, the first node 410 of FIG. 4A
  • the electronic device 101 may access the core network of the first wireless communication (eg, the core network 430 of FIG. 4A )
  • it may include a method of switching the second node 420).
  • the electronic device 101 makes a call connection with an external electronic device through the first node 410 (eg, NR base station 450) and the core network 430 (eg, 5GC 452) of FIG. 4A . fails, the second node 420 (eg, LTE base station 440) and the core network 430 (eg, 5GC 452) based on the network switching method re-establish a call connection with an external electronic device you can try
  • the communication system switching method may include a method of changing the communication system for the electronic device 101 to attempt a call connection with an external electronic device. For example, when the electronic device 101 fails to establish a call connection with an external electronic device through the NR base station 450 and the 5GC 452 of FIG.
  • a call connection with the external electronic device may be retried.
  • the electronic device 101 fails to connect a call with an external electronic device through the NR base station 450 and the 5GC 452 of FIG. 4B , the 3G communication method or the 2nd generation communication method based on the communication system switching method
  • a call connection with an external electronic device may be re-attempted through a communication-based wireless communication system.
  • the fallback method eg, an evolved packet system (EPS) fallback method
  • the electronic device 101 sets another method based on measurement information (eg, fake measurement) such that a service request or network switching occurs.
  • the communication method may include a method of performing RRC redirection or handover.
  • the wireless communication circuit 510 receives a signal from an external device (eg, the LTE base station 440 and/or the NR base station 450 of FIG. 4B ) through an antenna (not shown), or an external device. may transmit a signal to the device.
  • the wireless communication circuit 510 may include a first communication circuit and a second communication circuit.
  • the first communication circuit may include a first wireless communication method.
  • a first RFIC eg, first RFIC 222 of FIG. 2
  • a first RFFE eg, first RFFE of FIG. 2
  • the second communication circuit is a second RFIC (eg, a second RFIC for communication with a second node (eg, the second node 420 of FIG. 4A ) of the second wireless communication method).
  • the third RFIC 226 of FIG. 2) and the second RFFE eg, the third RFFE 236 of FIG. 2 may be included.
  • the memory 520 may store various data used by at least one component of the electronic device 101 (eg, the processor 500 or the wireless communication circuit 510 ). According to an embodiment, the memory 520 may store various instructions that may be executed through the processor 500 .
  • the electronic device eg, the electronic device 101 of FIGS. 1, 2, 4A, 4B, or 5 . performs new radio (NR) communication and/or long term evolution (LTE) ) a wireless communication circuit that supports communication (eg, the wireless communication module 192 of FIG. 1 or the wireless communication circuit 510 of FIG. 5 ), and at least one processor operatively connected with the wireless communication circuit (eg: processor 120 of FIG. 1 or processor 500 of FIG.
  • NR new radio
  • LTE long term evolution
  • the processor registers with the first network of the NR communication through the wireless communication circuit, and an external electronic device through the first network
  • the call connection with the external electronic device fails and the call connection with the external electronic device fails
  • at least one of emergency service support information or emergency service fallback support information related to the NR communication is checked, and the first of the NR communication
  • a call connection method may be determined as a fallback method, and a call connection with the external electronic device may be performed again through the fallback method.
  • the processor may check at least one of emergency service support information or emergency service fallback support information related to the NR communication in the message related to registration acceptance received from the first network of the NR communication. .
  • the fallback method may include an evolved packet system (EPS) fallback method.
  • EPS evolved packet system
  • the processor may transmit a message related to the service request of the fallback to the first network.
  • the processor may transmit a measurement report message related to the fallback to the first network.
  • the electronic device eg, the electronic device 101 of FIGS. 1, 2, 4A, 4B, or 5 . performs new radio (NR) communication and/or long term evolution (LTE) ) a wireless communication circuit that supports communication (eg, the wireless communication module 192 of FIG. 1 or the wireless communication circuit 510 of FIG. 5 ), and at least one processor operatively connected with the wireless communication circuit (eg: processor 120 of FIG. 1 or processor 500 of FIG.
  • NR new radio
  • LTE long term evolution
  • the processor registers with the first network of the NR communication through the wireless communication circuit, and an external electronic device through the first network
  • the processor registers with the first network of the NR communication through the wireless communication circuit, and an external electronic device through the first network
  • at least one of emergency service support information or emergency service fallback support information related to the NR communication is checked, and to the core network of the NR communication
  • the network switching method is the call A connection method may be selected, and a call connection with the external electronic device may be performed again based on the network switching method.
  • the processor checks a session initiation protocol (SIP) response code received from the first network in response to the call connection, and based on the SIP response code, an IP multimedia subsystem (IMS) server When it is determined that the call connection has failed due to an error in , at least one of emergency service support information or emergency service fallback support information related to the NR communication may be checked.
  • SIP session initiation protocol
  • IMS IP multimedia subsystem
  • the processor may determine that the call connection has failed due to an error in an IP multimedia subsystem (IMS) server.
  • IMS IP multimedia subsystem
  • the processor may check at least one of emergency service support information or emergency service fallback support information related to the NR communication in the message related to registration acceptance received from the first network of the NR communication. .
  • the processor registers with the second network of the LTE communication connected to the core network of the NR communication based on the network switching method, and makes a call connection with the external electronic device through the second network can be performed again.
  • the processor is configured such that the second network of the LTE communication connected to the core network of the NR communication does not support emergency service, and the first network and the second network do not support emergency service fallback.
  • a switching method of the communication system may be selected as the call connection method.
  • the processor registers with the LTE communication network connected to the LTE communication core network based on the switching method of the communication system, and makes a call with the external electronic device through the LTE communication network The connection can be made again.
  • each operation may be sequentially performed, but is not necessarily performed sequentially.
  • the order of each operation may be changed, and at least two operations may be performed in parallel.
  • the electronic device of FIG. 6 may be the electronic device 101 of FIGS. 1, 2, 4A, 4B, or 5 .
  • an electronic device eg, the processor 120 of FIG. 1 , the wireless communication module 192 , the processor 500 of FIG. 5 , or the wireless communication circuit 510 of FIG. 5 ) performs operation 601 .
  • a first network eg, the NR base station 450 of FIG. 4B
  • the first network of the first wireless communication is independent of the second network (eg, the LTE base station 440 of FIG. 4B ) of the second wireless communication (eg, LTE communication).
  • SA stand-alone
  • the electronic device performs the first operation of the first wireless communication (eg, NR communication).
  • a call connection with an external electronic device eg, the electronic device 104 of FIG. 1
  • the processor 500 transmits a call connection-related message (eg, session initiation protocol (SIP) invite) to the first network of the first wireless communication for the call connection of the external electronic device.
  • a call connection-related message eg, session initiation protocol (SIP) invite
  • the electronic device may determine whether a call connection with the external electronic device has failed in operation 605 . .
  • the processor 500 receives a message (eg, 183 session progress) related to the success of the call connection from the first network through the wireless communication circuit 510 .
  • the call connection with the external electronic device is performed. can be considered successful.
  • the processor 500 receives a message (eg, SIP error) related to the failure of the call connection from the first network through the wireless communication circuit 510
  • the processor 500 determines that the call connection with the external electronic device fails. can be judged as In this case, the processor 500 may determine the cause of the failure of the call connection based on the code included in the message related to the failure of the call connection.
  • an embodiment for setting a call connection method may be terminated.
  • the processor 500 may perform a call function based on the call connection with the external electronic device.
  • the electronic device eg, the processor 120 or 500 , the wireless communication module 192 , or the wireless communication circuit 510 . determines that the call connection with the external electronic device has failed (eg, operation 605 ) of 'Yes')
  • information related to the emergency service of the first wireless communication may be checked.
  • the processor 500 establishes a call-related QoS flow through the first network of the first wireless communication can be judged to be impossible.
  • the processor 500 is configured based on the "5GS network feature support" information element of the registration accept message (eg, registration accept) received from the network as shown in Table 1 (eg, 3GPP TS 24.501 standard). 1 You can check whether the communication method supports emergency service (eg EMC) and/or whether emergency service fallback is supported (eg EMF).
  • EMC emergency service
  • EMF emergency service fallback
  • IMS-VoPS-3GPP IMS voice over PS session over 3GPP access indicator
  • IMS-VoPS-3GPP IMS-VoPS-3GPP
  • This bit indicates the support of IMS voice over PS session over 3GPP access (see NOTE 1)
  • IMS voice over PS session over non-3GPP access indicator IMS-VoPS-N3GPP
  • This bit indicates the support of IMS voice over PS session over non-3GPP access
  • Bit 2 0 IMS voice over PS session not supported over non-3GPP access 1 IMS voice over PS session supported over non-3GPP access
  • EMC Emergency service support indicator for 3GPP access
  • Bit 4 3 0 0 Emergency services not supported 0 1 Emergency services supported in NR connected to 5GCN only 1 0 Emergency services supported in E-UTRA connected to 5G
  • the processor 500 may determine whether an emergency service is supported in a network related to the first wireless communication (eg, NR communication) based on “EMC” of Table 1 . For example, when bits 4 and 3 corresponding to "EMC" are "00", the processor 500 may determine that the emergency service is not supported in the first wireless communication. For example, when bits 4 and 3 corresponding to "EMC” are "01", the processor 500 is a first wireless It may be determined that the first network (eg, the first node 410 of FIG. 4A ) of communication (eg, NR communication) supports the emergency service.
  • the first network eg, the first node 410 of FIG. 4A
  • communication eg, NR communication
  • the processor 500 may be configured to configure a second wireless It may be determined that the second network (eg, the second node 420 of FIG. 4A ) of communication (eg, LTE communication) supports the emergency service. For example, when bits 4 and 3 corresponding to "EMC" are "11", the processor 500 is a first wireless A first network of communication (eg, NR communication) (eg, first node 410 in FIG. 4A ) and a second network (eg, second node 420 in FIG. 4A ) of a second wireless communication (eg, LTE communication) )), it can be determined that emergency services are supported.
  • a first wireless A first network of communication eg, NR communication
  • a second network eg, second node 420 in FIG. 4A
  • a second wireless communication eg, LTE communication
  • the processor 500 may determine whether emergency service fallback is supported in a network related to the first wireless communication (eg, NR communication) based on “EMF” in Table 1. For example, when bits 6 and 5 corresponding to "EMF" are "00", the processor 500 may determine that emergency service fallback is not supported in the first wireless communication. For example, when bits 6 and 5 corresponding to "EMF" are "01, the processor 500 is a first wireless communication connected to the core network of the first wireless communication (eg, the core network 430 of FIG. 4A ). It may be determined that the emergency service fallback is supported in the first network (eg, the first node 410 of FIG.
  • a network related to the first wireless communication eg, NR communication
  • the processor 500 corresponds to “EMF”
  • the second network eg, LTE communication
  • the core network of the first wireless communication eg, the core network 430 of FIG. 4A
  • the processor 500 may 1 A first network (eg, a first node 410 in FIG.
  • a second in a first wireless communication eg, NR communication
  • a core network eg, core network 430 in FIG. 4A
  • the second network eg, the second node 420 of FIG. 4A
  • wireless communication eg, LTE communication
  • the electronic device eg, the processor 120 or 500 , the wireless communication module 192 , or the wireless communication circuit 510 ) performs in operation 609 , based on information related to the emergency service of the first wireless communication, A call connection method with an external electronic device may be set.
  • the processor 500 may select a call connection method with an external electronic device corresponding to information related to the emergency service of the first wireless communication from the call connection method table shown in Table 2 .
  • "EMC" in Table 2 may indicate that emergency service is supported when set to "1", and may indicate that emergency service is not supported when set to "0".
  • EMF emergency service fallback is supported when set to "1", and may indicate that emergency service fallback is not supported when set to "0".
  • 5G in Table 2 is a first network (eg, NR communication) of a first wireless communication (eg, NR communication) connected to a core network (eg, the core network 430 of FIG. 4A ) of a first wireless communication (eg, NR communication)
  • the first node 410 of FIG. 4A may be shown.
  • 4G in Table 2 is a second network (eg, LTE communication) of a second wireless communication (eg, LTE communication) connected to a core network (eg, the core network 430 of FIG. 4A ) of a first wireless communication (eg, NR communication)
  • the second node 420 of FIG. 4A may be shown.
  • a call connection (eg, VoNR) performed through the first network of the first wireless communication fails (first call domain), and the second network of the second wireless communication provides an emergency service
  • a communication system switching method (eg, VoLTE) may be selected as a call connection method with an external electronic device.
  • the communication system switching method may include a method of changing the communication system for the electronic device 101 to attempt a call connection with an external electronic device.
  • a call connection with the external electronic device may be retried.
  • the call connection performed through the first network of the first wireless communication fails, the first network of the first wireless communication does not support the emergency service, and the second wireless communication of the second wireless communication fails.
  • a network switching method eg, RAT (change)
  • a network switching method may be selected as a call connection method with an external electronic device.
  • a network eg, the first node 410 of FIG. 4A
  • the electronic device 101 may access the core network of the first wireless communication (eg, the core network 430 of FIG. 4A )
  • it may include a method of switching the second node 420).
  • the electronic device 101 makes a call connection with an external electronic device through the first node 410 (eg, NR base station 450) and the core network 430 (eg, 5GC 452) of FIG. 4A . fails, the second node 420 (eg, LTE base station 440) and the core network 430 (eg, 5GC 452) based on the network switching method re-establish a call connection with an external electronic device you can try
  • the processor 500 is configured to be configured when the call connection performed through the first network of the first wireless communication fails, and the first network of the first wireless communication supports emergency service fallback (eg, case 1). , case 2, case 5, case 6, case 9, case 10, case 13, or case 14), a fallback method may be selected as a call connection method with an external electronic device.
  • a fallback method eg, EPS fallback method
  • RRC redirection is another communication method based on measurement information (eg, fake measurement) set by the electronic device 101 to generate a service request or network switching. (redirection) or a method of performing handover may be included.
  • the electronic device eg, the processor 120 or 500 , the wireless communication module 192 , or the wireless communication circuit 510 ) performs in operation 611 , based on information related to the emergency service of the first wireless communication, Based on the set call connection method, a call connection with the external electronic device may be performed again.
  • the failure of the call connection with the external electronic device is caused by the IMS module (or the IMS server). If it is determined that there is an error, a call connection method may be set (or updated) based on information related to the emergency service of the first wireless communication. According to an embodiment, the processor 500 determines that the call connection has failed due to an error in the IMS module when the code included in the message related to the failure of the call connection is included in the specified first range (eg, 400 to 499). can do.
  • the specified first range eg, 400 to 499
  • the processor 500 determines that the call connection has failed due to an error in the IMS module, since it cannot determine the exact cause of the failure of the call connection, the processor 500 sets a call connection method based on information related to the emergency service of the first wireless communication (or can be updated). According to an embodiment, when the processor 500 can determine the cause of the failure of the call connection based on the code included in the message related to the failure of the call connection, the call connection method is set based on the cause of the failure of the call connection. (or update).
  • FIG. 7 is a flowchart 700 for attempting a call connection using a fallback method in an electronic device according to various embodiments of the present disclosure.
  • the operations of FIG. 7 may describe detailed operations of operations 609 to 611 of FIG. 6 .
  • each operation may be sequentially performed, but is not necessarily performed sequentially.
  • the order of each operation may be changed, and at least two operations may be performed in parallel.
  • the electronic device of FIG. 7 may be the electronic device 101 of FIGS. 1, 2, 4A, 4B, or 5 .
  • an electronic device eg, the processor 120 of FIG. 1 , the wireless communication module 192 of FIG. 1 , the processor 500 of FIG. 5 , or the wireless communication circuit 510 of FIG. 5
  • the first network of the first wireless communication eg, the NR base station 450 of FIG. 4B
  • the processor 500 determines that when “5G” of “EMF” in Table 2 is set to “1”, the first network of the first wireless communication (eg, the NR base station 450 in FIG. 4B ) It can be determined that emergency service fallback is supported.
  • the first network of the first wireless communication eg, the NR base station 450 in FIG. 4B
  • the electronic device eg, the processor 120 or 500 , the wireless communication module 192 , or the wireless communication circuit 510
  • a first network eg, the NR base station of FIG. 4B
  • emergency service fallback eg, 'No' in operation 701
  • an embodiment for retrying a call connection may be terminated using a fallback method (eg, EPS fallback).
  • the electronic device (eg, the processor 120 or 500 , the wireless communication module 192 , or the wireless communication circuit 510 ) includes a first network (eg, the NR base station of FIG. 4B ) of the first wireless communication. 450)) supports emergency service fallback (eg, 'Yes' in operation 701), in operation 703, a call connection with the external electronic device may be retry using the fallback method.
  • a first network eg, the NR base station of FIG. 4B
  • emergency service fallback eg, 'Yes' in operation 701
  • a call connection with the external electronic device may be retry using the fallback method.
  • the electronic device (eg, the processor 120 or 500 , the wireless communication module 192 , or the wireless communication circuit 510 ) includes a first network (eg, the NR base station of FIG. 4B ) of the first wireless communication. 450)) supports emergency service fallback, a call connection method may be set based on the number of attempts to connect a call with an external electronic device.
  • the processor 500 performs the first of the first wireless communication based on Table 2 (eg, case 1, case 2, case 5, case 6, case 9, case 10, case 13 or case 14).
  • Table 2 eg, case 1, case 2, case 5, case 6, case 9, case 10, case 13 or case 14.
  • a fallback method eg EPS fallback
  • the processor 500 communicates with an external electronic device in a state in which the first network of the first wireless communication (eg, the NR base station 450 in FIG. 4B ) supports emergency service fallback based on Table 2
  • a call connection with an external electronic device may be attempted by accessing the second wireless communication system based on the communication system switching method (eg, VoLTE).
  • the processor 500 communicates with an external electronic device in a state in which the first network of the first wireless communication (eg, the NR base station 450 in FIG. 4B ) supports emergency service fallback based on Table 2
  • a call connection with an external electronic device may be attempted by accessing a third wireless communication system based on a communication system switching method (eg, CS (cirsuit switched)).
  • CS circuitsuit switched
  • the electronic device 101 connects to a network 450 (eg, the NR base station 450 of FIG. 4B ) of the first wireless communication (eg, NR communication). can be registered.
  • the network 450 of the first wireless communication is connected to the network 440 of the second wireless communication (eg, LTE communication) (eg, the LTE base station 440 of FIG. 4B ).
  • LTE communication eg, LTE base station 440 of FIG. 4B
  • SA independently operated
  • a message related to a call request (eg, SIP invite) is first transmitted. It can be transmitted to the IMS server 800 through the network 450 of wireless communication.
  • the IMS server 800 transmits a SIP response message related to the call connection failure to the first wireless communication network 450 in operation 815 .
  • the SIP response message may include a code corresponding to the cause of the call connection failure.
  • the electronic device 101 determines that the call connection has failed due to an error in the IMS server 800 based on the SIP response message related to the call connection failure
  • the first wireless communication emergency service related information Based on this, a call connection method for retrying a call connection with the external electronic device may be set (or updated).
  • the network 450 of the first wireless communication supports emergency service fallback (eg, case 1, case 2, case 5, case 6, case 9, In case 10, case 13, or case 14)
  • the EPS fallback method may be selected as a method for retrying a call connection with an external electronic device.
  • the electronic device 101 when the EPS fallback method is selected as a method for retrying a call connection with the external electronic device, the electronic device 101 transmits a service request message related to the EPS fallback in operation 817 of the first wireless communication. may be transmitted to the network 450 . According to an embodiment, when it is determined that the electronic device 101 can request the EPS fallback, the electronic device 101 may transmit a service request message related to the EPS fallback to the network 450 of the first wireless communication.
  • the electronic device 101 may perform RRC redirection or handover with the first wireless communication network 450 for EPS fallback.
  • the electronic device 101 may register with the network 440 of the second wireless communication in operation 821 .
  • the electronic device 101 may transmit a tracking area update (TAU) request message to the network 440 of the second wireless communication.
  • TAU tracking area update
  • the electronic device 101 may register with the network 440 of the second wireless communication based on reception of the TAU approval message from the network 440 of the second wireless communication.
  • the electronic device 101 may perform a call connection with the external electronic device again through the network 440 of the second wireless communication registered through EPS fallback.
  • the electronic device 101 may transmit a message related to a call request (eg, SIP invite) to the IMS server 800 through the network 440 of the second wireless communication.
  • a call request eg, SIP invite
  • the electronic device 101 connects to the network 450 (eg, the NR base station 450 of FIG. 4B ) of the first wireless communication (eg, NR communication).
  • the network 450 of the first wireless communication may operate independently of the network 440 of the second wireless communication (eg, LTE communication) (eg, the LTE base station 440 of FIG. 4B ). (eg SA).
  • the electronic device 101 may transmit a message (eg, SIP invite) related to a call request to the IMS server 900 through the network 450 of the first wireless communication.
  • a message eg, SIP invite
  • the IMS server 900 transmits a SIP response message related to the call connection failure to the first wireless communication network 450 in operation 915 .
  • the SIP response message may include a code corresponding to the cause of the call connection failure.
  • the electronic device 101 when the electronic device 101 determines that the call connection has failed due to an error in the IMS server 900 based on the SIP response message related to the call connection failure, the first wireless communication emergency service related information Based on this, a call connection method for retrying a call connection with the external electronic device may be set (or updated).
  • the code included in the SIP response message related to the call connection failure is included in the specified first range (eg, 400 to 499)
  • the electronic device 101 determines that the cause of the call connection failure is the IMS server ( 900) may be due to the error.
  • the electronic device 101 when the network 450 of the first wireless communication supports the emergency service fallback, the electronic device 101 may select the EPS fallback method as a method for retrying a call connection with the external electronic device. have.
  • the electronic device 101 when the EPS fallback method is selected as a method for retrying a call connection with an external electronic device, the electronic device 101 sends a measurement report to the network of the first wireless communication in operation 917 It can be sent to (450).
  • measurement information eg, fake measurement
  • the electronic device 101 determines that the EPS fallback cannot be requested from the electronic device 101 , measurement information (eg, fake measurement) configured to cause switching of the network 440 of the second wireless communication ) may be transmitted to the network 450 of the first wireless communication.
  • the electronic device 101 may perform RRC redirection or handover with the first wireless communication network 450 for EPS fallback.
  • the electronic device 101 may register with the network 440 of the second wireless communication in operation 921 . According to an embodiment, the electronic device 101 may register with the network 440 of the second wireless communication through a TAU procedure with the network 440 of the second wireless communication.
  • the electronic device 101 may perform a call connection with the external electronic device again through the second wireless communication network 440 registered through EPS fallback. According to an embodiment, the electronic device 101 may transmit a message related to a call request (eg, SIP invite) to the IMS server 900 through the network 440 of the second wireless communication.
  • a call request eg, SIP invite
  • FIG. 10 is a flowchart 1000 for changing a communication system for a call connection in an electronic device according to various embodiments of the present disclosure.
  • the operations of FIG. 10 may describe detailed operations of operations 609 to 611 of FIG. 6 .
  • each operation may be sequentially performed, but is not necessarily performed sequentially.
  • the order of each operation may be changed, and at least two operations may be performed in parallel.
  • the electronic device of FIG. 10 may be the electronic device 101 of FIGS. 1, 2, 4A, 4B, or 5 .
  • an electronic device eg, the processor 120 of FIG. 1 , the wireless communication module 192 of FIG. 1 , the processor 500 of FIG. 5 , or the wireless communication circuit 510 of FIG. 5
  • the first wireless communication network eg, the first node 410 and the second node 420 of FIG. 4A
  • the processor 500 performs a first network connected to the core network of the first wireless communication (eg, FIG. 4A ). It may be determined that the first node 410) and the second network (eg, the second node 420 of FIG. 4A ) do not support emergency service fallback.
  • the electronic device eg, the processor 120 or 500 , the wireless communication module 192 , or the wireless communication circuit 510
  • emergency service fallback eg, the network of the first wireless communication
  • the processor 500 as in case 8 or case 16 of Table 2, when "4G" of "EMC” is set to "0", the second network ( Example: It may be determined that the second node 420 of FIG. 4A does not support the emergency service.
  • the electronic device determines that the network of the first wireless communication supports emergency service fallback (eg, operates 'No' of 1001), when the second network of the second wireless communication supports the emergency service (eg, 'No' of operation 1003), an embodiment for retrying a call connection using a communication system switching method can be terminated.
  • emergency service fallback e.g, operates 'No' of 1001
  • the second network of the second wireless communication supports the emergency service
  • the processor 500 is, as in case 1, case 5, case 9 or case 13 of Table 2, when "EMF” is set to "11", the first connected to the core network of the first wireless communication It may be determined that the network (eg, the first node 410 of FIG. 4A ) and the second network (eg, the second node 420 of FIG. 4A ) support the emergency service fallback. In this case, the processor 500 may retry the call connection using a fallback method.
  • the processor 500 as shown in case 4 or case 12 of Table 2, the network of the first wireless communication does not support the emergency service fallback (eg, "EMF” is set to "00"), 1
  • the second network eg, the second node 420 of FIG. 4A
  • the core network of wireless communication eg, the core network 430 of FIG. 4A
  • an emergency service eg, of "EMC”
  • the call connection can be retried using the network switching method.
  • the electronic device eg, the processor 120 or 500 , the wireless communication module 192 , or the wireless communication circuit 510
  • the second network eg, the second node of FIG. 4A
  • the wireless communication module 192 or the wireless communication circuit 510
  • the second network eg, the second node of FIG. 4A
  • the wireless communication module 192 or the wireless communication circuit 510
  • the second network eg, the second node of FIG. 4A
  • the first wireless communication eg, the second node of FIG. 4A
  • the wireless communication module 192 e.g.
  • the wireless communication circuit 510 does not support the emergency service (eg, 'Yes' in operation 1003 ), in operation 1005 , it may register with the system of the second wireless communication.
  • the processor 500 as shown in case 8 or case 16 of Table 2, the network of the first wireless communication does not support the emergency service fallback (eg, "EMF" is set to "00"), 1
  • the second network eg, the second node 420 of
  • the processor 500 is a wireless communication circuit to transmit a registration request (tracking area update (TAU) or attach request) message to the second network of the second wireless communication (eg, the LTE base station 450 in FIG. 4B ).
  • TAU tracking area update
  • 510 can be controlled.
  • the processor 500 receives a registration acknowledgment (tracking area accept (TAA) or attach accept) message from a second network of a second wireless communication (eg, the LTE base station 450 of FIG. 4B ) through the wireless communication circuit 510 .
  • TAU tracking area update
  • attach accept a registration acknowledgment
  • TAA tracking area accept
  • attach accept attach accept
  • the electronic device eg, the processor 120 or 500 , the wireless communication module 192 , or the wireless communication circuit 510 ) communicates with an external electronic device through a second wireless communication system in operation 1007 . You can retry the call connection.
  • 11 is an example for changing to a second wireless communication system for a call connection in an electronic device according to various embodiments of the present disclosure
  • the electronic device 101 connects to a network 450 (eg, the NR base station 450 of FIG. 4B ) of the first wireless communication (eg, NR communication).
  • a network 450 eg, the NR base station 450 of FIG. 4B
  • the network 450 of the first wireless communication may operate independently of the network 440 of the second wireless communication (eg, LTE communication) (eg, the LTE base station 440 of FIG. 4B ).
  • a call connection with the external electronic device is established through the first wireless communication network 450 .
  • the electronic device 101 may transmit a message (eg, SIP invite) related to a call request to the IMS server 1100 through the network 450 of the first wireless communication.
  • a message eg, SIP invite
  • the IMS server 1100 when a call connection between the electronic device 101 and an external electronic device fails, the IMS server 1100 sends a SIP response message related to the call connection failure to the first wireless communication network 450 in operation 1115. may be transmitted to the electronic device 101 through
  • the SIP response message may include a code corresponding to the cause of the call connection failure.
  • the SIP response message may include a code included in a designated first range (eg, 400 to 499) when the failure of the call connection occurs due to an error in the IMS server 1100 .
  • the emergency of the first wireless communication A call connection method for retrying a call connection with an external electronic device may be set (or updated) based on service-related information.
  • a communication system switching method may be selected as a method for retrying a call connection with an external electronic device.
  • the electronic device 101 selects the second wireless communication network 450 in operation 1119 .
  • the electronic device 101 may transmit a registration request message to the network 440 of the second wireless communication.
  • the electronic device 101 may transmit a tracking area update (TAU) message to the network 450 of the second wireless communication (eg, the LTE base station 450 of FIG. 4B ).
  • TAU tracking area update
  • the electronic device 101 when receiving a registration acceptance message in response to the registration request message from the network 440 of the second wireless communication, the electronic device 101 is registered in the network 440 of the second wireless communication.
  • the electronic device 101 can judge For example, when the electronic device 101 receives a tracking area accept (TAA) message from the second wireless communication network 450 (eg, the LTE base station 450 of FIG. 4B ) in response to the TAU message, It may be determined that the second wireless communication system is registered.
  • TAA tracking area accept
  • the electronic device 101 may perform a call connection with the external electronic device again through the network 440 of the second wireless communication.
  • the electronic device 101 may transmit a message related to a call request (eg, SIP invite) to the IMS server 1100 through the network 440 of the second wireless communication.
  • a call request eg, SIP invite
  • the electronic device 101 connects to a network 450 (eg, the NR base station 450 of FIG. 4B ) of the first wireless communication (eg, NR communication).
  • a network 450 eg, the NR base station 450 of FIG. 4B
  • the network 450 of the first wireless communication may operate independently of the network 440 of the second wireless communication (eg, LTE communication) (eg, the LTE base station 440 of FIG. 4B ).
  • a call connection with the external electronic device is established through the first wireless communication network 450 .
  • the electronic device 101 may transmit a message (eg, SIP invite) related to a call request to the IMS server 1200 through the network 450 of the first wireless communication.
  • a message eg, SIP invite
  • the IMS server 1200 transmits a SIP response message related to the call connection failure to the first wireless communication network 450 in operation 1215 .
  • the SIP response message may include a code corresponding to the cause of the call connection failure.
  • the SIP response message may include a code included in a specified first range (eg, 400 to 499) when the failure of the call connection occurs due to an error in the IMS server 1200 .
  • the emergency of the first wireless communication A call connection method for retrying a call connection with an external electronic device may be set (or updated) based on service-related information.
  • a communication system switching method may be selected as a method for retrying a call connection with an external electronic device.
  • the electronic device 101 when a third wireless communication system (eg, a 3G communication system or a 2G communication system) is selected based on the communication system switching method, the electronic device 101 performs the third wireless communication method in operation 1219 It can register with the network 1202 of communications. According to an embodiment, the electronic device 101 may register with the network 1202 of the third wireless communication through a location update procedure with the network 1202 of the third wireless communication.
  • a third wireless communication system eg, a 3G communication system or a 2G communication system
  • the electronic device 101 may re-establish a call connection with an external electronic device through the third wireless communication network 1202 .
  • the electronic device 101 may attempt a call connection with an external electronic device through a circuit switched method through the third wireless communication network 1202 .
  • FIG. 13 is a flowchart 1300 for changing a network for a call connection in an electronic device according to various embodiments of the present disclosure.
  • the operations of FIG. 13 may describe detailed operations of operations 609 to 611 of FIG. 6 .
  • each operation may be sequentially performed, but is not necessarily performed sequentially.
  • the order of each operation may be changed, and at least two operations may be performed in parallel.
  • the electronic device of FIG. 13 may be the electronic device 101 of FIGS. 1, 2, 4A, 4B, or 5 .
  • an electronic device eg, the processor 120 of FIG. 1 , the wireless communication module 192 of FIG. 1 , the processor 500 of FIG. 5 , or the wireless communication circuit 510 of FIG. 5
  • the first network of the first wireless communication eg, the first node 410 of FIG. 4A
  • the processor 500 is a first network connected to the core network of the first wireless communication when "5G" of "EMF” and “EMF” is set to “0" as in case 11 of Table 2 It may be determined that (eg, the first node 410 of FIG. 4A ) does not support the emergency service and the emergency service fallback.
  • the electronic device eg, the processor 120 or 500 , the wireless communication module 192 , or the wireless communication circuit 510 ) enables the first network of the first wireless communication to perform an emergency service fallback and an emergency service fallback. If not supported (eg, 'Yes' in operation 1301), in operation 1303, it is checked whether the second network of the second wireless communication (eg, the second node 420 of FIG. 4A) supports the emergency service and the emergency service fallback.
  • the processor 500 is a second network connected to the core network of the first wireless communication when "4G" of "EMF" and "EMF" is set to "1" as in case 11 of Table 2 It may be determined that (eg, the second node 420 of FIG. 4A ) supports the emergency service and the emergency service fallback.
  • the first network of the first wireless communication supports the emergency service and the emergency service fallback. or (eg, 'No' in operation 1301), or when the second network of the second wireless communication does not support the emergency service and emergency service fallback (eg, 'No' in operation 1303), a call connection is made using the network switching method An embodiment for retrying may be terminated.
  • the processor 500 is configured to support emergency service and emergency service fallback when the first network of the first wireless communication supports emergency service and emergency service fallback as shown in case 1, case 2, case 5 or case 6 of Table 2 (eg: "5G” of "EMC” and “EMF” is set to "1"), and the call connection can be retryed using the fallback method.
  • the processor 500 is configured that, as shown in case 16 of Table 2, the first network of the first wireless communication does not support emergency service and emergency service fallback (eg, “5G” of “EMC” and “EMF”) " is set to “0"), when the second network of the second wireless communication does not support emergency service and emergency service fallback (eg, "4G” in “EMC” and “EMF” is set to "0");
  • the call connection may be retried using the communication system switching method.
  • the electronic device eg, the processor 120 or 500 , the wireless communication module 192 , or the wireless communication circuit 510
  • the second network eg, the second node of FIG. 4A
  • the electronic device supports the emergency service and emergency service fallback (eg, 'Yes' in operation 1303), in operation 1305, based on the network switching method, the second wireless communication connected to the core network of the first wireless communication A call connection with the external electronic device may be re-attempted through the second network.
  • the processor 500 is configured such that, as shown in case 11 of Table 2, the network of the first wireless communication does not support the emergency service and the emergency service fallback, and the network of the second wireless communication provides the emergency service and the emergency service fallback.
  • the call connection is retryed using the network switching switching method. For example, when the processor 500 fails to establish a call connection with an external electronic device through the first node 410 (eg, the NR base station 450 ) connected to the core network 430 of FIG. 4A , the network switching method A call connection with the external electronic device may be attempted again through the second node 420 (eg, the LTE base station 440 ) connected to the core network 430 based on (eg, RAT (change)).
  • the electronic device 101 performs a first wireless communication (eg, NR communication) network 450 (eg, the first node 410 of FIG. 4A ).
  • a first wireless communication eg, NR communication
  • the network 450 of the first wireless communication is the network 440 of the second wireless communication (eg, LTE communication) (eg, the second node 420 of FIG. 4A ).
  • LTE communication e.g. Long Term Evolution
  • a message related to a call request (eg, SIP invite) is transmitted to the network of the first wireless communication ( 450) through the IMS server 1400 may be transmitted.
  • the IMS server 1400 when the IMS server 1400 fails to connect the electronic device 101 to the external electronic device, in operation 1415 , the IMS server 1400 transmits a SIP response message related to the call connection failure to the network 450 of the first wireless communication. may be transmitted to the electronic device 101 through
  • the SIP response message may include a code corresponding to the cause of the call connection failure.
  • the SIP response message when a call connection with an external electronic device fails due to an error in the IMS server 1400, the SIP response message may include a code included in a first designated range (eg, 400 to 499).
  • the emergency of the first wireless communication A call connection method for retrying a call connection with an external electronic device may be set (or updated) based on service-related information.
  • the network 450 of the first wireless communication does not support the emergency service and the network 440 of the second wireless communication supports the emergency service and the emergency service fallback (eg, : In case 11) of Table 2, a network switching method may be selected as a method for retrying a call connection with an external electronic device.
  • the first wireless communication network 440 is performed through a cell reselection procedure.
  • the core may be registered in the network 440 of the second wireless communication connected to the core network.
  • the electronic device 101 may re-establish a call connection with an external electronic device through the network 440 of the second wireless communication registered through cell reselection.
  • the electronic device 101 may transmit a message (eg, SIP invite) related to a call request to the IMS server 1400 through the network 440 of the second wireless communication.
  • a message eg, SIP invite
  • an electronic device supporting new radio (NR) communication and/or long term evolution (LTE) communication (eg, the electronic device of FIGS. 1, 2, 4A, 4B, or 5 ( 101)), when the operation of performing a call connection with an external electronic device through the first network of the NR communication and the call connection with the external electronic device fails, support of an emergency service related to the NR communication
  • NR new radio
  • LTE long term evolution
  • the determining of the call connection method may include checking a session initiation protocol (SIP) response code received from the first network in response to the call connection and based on the SIP response code.
  • SIP session initiation protocol
  • IMS IP multimedia subsystem
  • At least one of emergency service support information and emergency service fallback support information related to the NR communication may be identified in a message related to registration acceptance received from the first network of the NR communication.
  • the fallback method may include an evolved packet system (EPS) fallback method.
  • EPS evolved packet system
  • the method may further include selecting a network switching method as the call connection method and performing a call connection with the external electronic device again based on the network switching method.
  • the operation of re-establishing the call connection may include registering in the second network of the LTE communication connected to the core network of the NR communication based on the network switching method, and through the second network It may include an operation of re-establishing a call connection with the external electronic device.
  • the communication system may further include selecting a switching method of , as the call connection method, and performing a call connection with the external electronic device again based on the switching method of the communication system.
  • the operation of re-establishing the call connection includes an operation of registering in the network of the LTE communication connected to the core network of the LTE communication based on the switching method of the communication system, and the network of the LTE communication It may include an operation of re-establishing a call connection with the external electronic device through the

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Telephone Function (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Divers modes de réalisation de la présente invention concernent un dispositif et un procédé conçus pour assurer une fonction d'appel dans un dispositif électronique. Un dispositif électronique comprend un circuit de communication sans fil et au moins un processeur. Le processeur peut : s'enregistrer auprès d'un premier réseau de communication NR par l'intermédiaire du circuit de communication sans fil ; exécuter une connexion d'appel à un dispositif électronique externe par l'intermédiaire du premier réseau ; si la connexion d'appel au dispositif électronique externe échoue, confirmer des informations de prise en charge relatives à un service d'urgence associées aux informations de prise en charge de repli de communication NR et/ou de service d'urgence ; si le premier réseau de la communication NR prend en charge le repli du service d'urgence, déterminer un procédé de connexion d'appel devant faire office de procédé de repli ; et exécuter à nouveau la connexion d'appel au dispositif électronique externe sur la base du procédé de repli. D'autres modes de réalisation sont également possibles.
PCT/KR2021/016925 2020-11-26 2021-11-17 Dispositif électronique conçu pour assurer une fonction d'appel et procédé de fonctionnement dudit dispositif WO2022114662A1 (fr)

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KR10-2020-0161264 2020-11-26
KR1020200161264A KR20220073313A (ko) 2020-11-26 2020-11-26 통화 기능을 제공하기 위한 전자 장치 및 그의 동작 방법

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* Cited by examiner, † Cited by third party
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WO2024131889A1 (fr) * 2022-12-23 2024-06-27 北京紫光展锐通信技术有限公司 Procédé et appareil de communication, puce et dispositif de module

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