KR20220105314A - Electronic device multiple sim and method for operating thereof - Google Patents

Abstract

According to various embodiments, an electronic device comprises: at least one processor connected to a first SIM and a second SIM; and at least one RF device used for communication based on the first SIM and communication based on the second SIM. The at least one processor can be configured, while the use of the at least one RF device is assigned to the first SIM to: obtain at least one piece of information on a first cell corresponding to 5G communication; connect to the first cell on the basis of the at least one piece of information on the first cell; and store the at least one piece of information on the first cell, and can be configured while the use of the at least one RF device is changed from the first SIM and assigned to the second SIM to: read, on the basis of confirmation of an event requiring cell selection, the at least one piece of information on the first cell to which the electronic device is being connected on the basis of the first SIM, while being connected to a second cell corresponding to LTE communication; and transmit a PRACH preamble message to the first cell when the strength of a signal from the first cell, which is measured using the at least one piece of information on the first cell, satisfies a specified condition. Therefore, information related to a specific cell supporting 5G SA obtained in association with the first SIM can be used for cell search and RACH procedures associated with the second SIM. Other various embodiments are possible.

Description

Electronic device supporting multiple SIMs and operating method thereof

Various embodiments relate to an electronic device supporting a plurality of SIMs and a method of operating the same.

In a wireless communication system, an electronic device (eg, user equipment (UE)) may access a wireless communication network and use a voice communication or data communication service while in a predetermined location or while moving. In order to provide a communication service to an electronic device, an appropriate authentication process is required. A universal integrated circuit card (UICC) is inserted into an electronic device, and authentication is performed between the electronic device and a server of a mobile network operator (MNO) through a universal subscriber identity module (USIM) installed inside the UICC. This is done. UICC may be referred to as a subscriber identity module (SIM) card in the case of a global system for mobile communications (GSM) method, a universal subscriber identity module (USIM) card in the case of a wideband code division multiple access (WCDMA), and long term evolution (LTE) method. have. The USIM card or SIM card may exist in the form of an independent UICC, may exist in the form embedded in the electronic device (eg, embedded SIM, eSIM), or may exist in the form integrated into at least one of chips included in the electronic device (eg: It may exist as an integrated SIM (iSIM).

When a user of an electronic device subscribes to a wireless communication service provided by a carrier, the carrier provides a UICC (eg, a SIM card or a USIM card) to the user, and the user can insert the provided UICC into his/her electronic device. have. According to an embodiment, when a user of the electronic device subscribes to a wireless communication service provided by a communication service provider, information to be stored in a UICC (eg, eSIM card or iSIM card) included in the electronic device may be received from the communication service provider. . When a UICC is inserted into an electronic device or receives information to be stored in the UICC from a communication service provider, the USIM application installed in the UICC stores an international mobile subscriber identity (IMSI) value stored in the UICC and an encryption key value for authentication. An appropriate authentication process can be performed with the server of the telecommunication service provider in which the same value is stored using . After an appropriate authentication process is performed, the wireless communication service can be used.

When SIM-related information is provided to a UICC (eg, eSIM or iSIM) installed in an electronic device from a server of a communication service provider, the IMSI ( International mobile subscriber identity) value and an encryption key value for authentication may be used to perform an appropriate authentication process with a server of a telecommunication service provider in which the same value is stored. After an appropriate authentication process is performed, the wireless communication service can be used.

The electronic device may support two or more SIMs, and this may be referred to as a dual SIM (dual SIM) or a multi-SIM electronic device. Mounting two or more SIM cards in the electronic device may mean that at least two or more independent UICCs are configured. Alternatively, the mounting of two or more SIM cards in the electronic device may mean that the electronic device is composed of at least one independent UICC and at least one eSIM card. Alternatively, the mounting of two or more SIM cards in the electronic device may mean that the electronic device is composed of at least one independent UICC and at least one iSIM card. Alternatively, the mounting of two or more SIM cards in the electronic device may mean that the electronic device is composed of an eSIM card or an iSIM card supporting at least two or more networks. A dual SIM or multi-SIM electronic device may support a plurality of SIMs, and each SIM may be associated with a different subscription. A mode in which one transceiver transmits and receives signals associated with a plurality of SIMs may be referred to as a dual SIM dual standby (DSDS) mode. In this case, when one SIM transmits or receives a signal, the other SIM may be in the standby mode. Alternatively, a mode in which both SIMs can be simultaneously activated may be referred to as a dual SIM dual active (DSDA) mode.

Among the plurality of SIMs supported by the electronic device, one SIM may support 5G stand alone (SA), and the other SIM may also support 5G SA. For example, two SIMs may be associated with the same operator. Alternatively, when one SIM is associated with the first operator and the other SIM is associated with the second operator, the first operator and the second operator may share a frequency (or cell). However, in the DSDS mode, the electronic device may not share information among a plurality of SIMs. For example, as information associated with a cell obtained in association with the first SIM is not used in operation of the second SIM, in association with the first SIM in cell search and cell selection associated with the second SIM, Pre-stored information may not be used, and searching for a corresponding cell and obtaining information on a corresponding cell may have to be performed again.

An electronic device and an operating method according to various embodiments may use information associated with a specific cell obtained in association with a first SIM for cell discovery and a random access channel (RACH) procedure associated with a second SIM.

According to various embodiments, the electronic device includes at least one processor connected to the first SIM and the second SIM, and at least one RF device used for communication based on the first SIM and the communication based on the second SIM. and, while the use of the at least one RF device is assigned to the first SIM, the at least one processor acquires at least one information about a first cell corresponding to 5G communication, configured to access the first cell and store the at least one information about the first cell based on the at least one information about While being changed to and assigned to the second SIM, in a state in which access to a second cell corresponding to LTE communication is performed, based on an event confirmation for which cell selection is required, the electronic device is being accessed based on the first SIM When the at least one piece of information on the first cell is read and the strength of the signal from the first cell measured using the at least one piece of information on the first cell satisfies a specified condition, the first It may be configured to transmit a PRACH preamble message to the cell.

According to various embodiments, a method of operating an electronic device that supports a first SIM and a second SIM and includes at least one RF device used for communication based on the first SIM and communication based on the second SIM, , while the use of the at least one RF device is assigned to the first SIM, obtaining at least one information on a first cell corresponding to 5G communication, in the at least one information on the first cell based on the operation of accessing the first cell, and the operation of storing the at least one information about the first cell, wherein the method of operating the electronic device includes: use of the at least one RF device; While being changed and assigned from the first SIM to the second SIM, in a state in which access to a second cell corresponding to LTE communication, based on an event confirmation for which cell selection is required, the electronic device based on the first SIM an operation in which the device reads the at least one piece of information on the first cell being accessed, and a condition in which the strength of the signal from the first cell measured using the at least one piece of information on the first cell is specified is satisfied, transmitting a PRACH preamble message to the first cell.

According to various embodiments, there is provided an electronic device and method of operation, in which information associated with a specific cell supporting 5G SA obtained in association with a first SIM can be used for cell discovery and RACH procedures associated with a second SIM can be Accordingly, when a trigger for cell search is generated in the second SIM, the electronic device may perform a cell search and RACH procedure using information associated with a specific cell obtained in association with the first SIM, Camp-on and RACH procedures can be quickly performed in a specific cell supporting 5G SA.

1A is a block diagram of an electronic device in a network environment, according to various embodiments.
1B is a diagram illustrating a network environment including an electronic device, according to various embodiments of the present disclosure;
2A and 2B are block diagrams of an electronic device for supporting legacy network communication and 5G network communication, according to various embodiments.
3 is a diagram for describing a connection of an electronic device to a cell according to various embodiments of the present disclosure;
4A is a flowchart illustrating a method of operating an electronic device according to a comparative example for comparison with various embodiments.
4B is a flowchart illustrating a method of operating an electronic device according to a comparative example for comparison with various embodiments.
5 is a flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure;
6 is a flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure;
7 is a flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure;
8 is a flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure;
9 is a flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure;
10 is a flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure.
11A is a flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure;
11B is a flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure;

1A is a block diagram of an electronic device 101 in a network environment 100 according to various embodiments. Referring to FIG. 1 , in a network environment 100 , the electronic device 101 communicates with the 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 . According to an embodiment, the electronic device 101 includes a processor 120 , a memory 130 , an input device 150 , a sound output device 155 , a display device 160 , an audio module 170 , and a sensor module ( 176 , interface 177 , haptic module 179 , camera module 180 , power management module 188 , battery 189 , communication module 190 , subscriber identification module 196 , or antenna module 197 . ) may be included. In some embodiments, at least one of these components (eg, the display device 160 or the camera module 180 ) may be omitted or one or more other components may be added to the electronic device 101 . In some embodiments, some of these components may be implemented as one integrated circuit. For example, the sensor module 176 (eg, a fingerprint sensor, an iris sensor, or an illuminance sensor) may be implemented while being embedded in the display device 160 (eg, a display).

The processor 120, for example, executes software (eg, the 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 computation, 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 loaded into the volatile memory 132 , process commands or data stored in the volatile memory 132 , and store the resulting data in the non-volatile memory 134 . According to an embodiment, the processor 120 includes a main processor 121 (eg, a central processing unit or an application processor), and a secondary processor 123 (eg, a graphic processing unit, an image signal processor) that can be operated independently or together with the main processor 121 . , a sensor hub processor, or a communication processor). Additionally or alternatively, the auxiliary processor 123 may be configured to use less power than the main processor 121 or to be specialized for a specified function. The auxiliary processor 123 may be implemented separately from or as a part of the main processor 121 .

The secondary processor 123 may, for example, act on behalf of the main processor 121 while the main processor 121 is in an inactive (eg, sleep) state, or when the main processor 121 is active (eg, executing an application). ), together with the main processor 121, at least one of the components of the electronic device 101 (eg, the display device 160, the sensor module 176, or the communication module 190) It is possible to control at least some of the related functions or states. According to an embodiment, 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 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 device 150 may receive a command or data to be used by a component (eg, the processor 120 ) of the electronic device 101 from the outside (eg, a user) of the electronic device 101 . The input device 150 may include, for example, a microphone, a mouse, a keyboard, or a digital pen (eg, a stylus pen).

The sound output device 155 may output a sound signal to the outside of the electronic device 101 . The sound output device 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, and the receiver can be used to receive incoming calls. According to one embodiment, the receiver may be implemented separately from or as part of the speaker.

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

The audio module 170 may convert a sound into an electric signal or, conversely, convert an electric signal into a sound. According to an embodiment, the audio module 170 acquires a sound through the input device 150 , or an external electronic device (eg, a sound output device 155 ) connected directly or wirelessly with the electronic device 101 . The electronic device 102) (eg, a speaker or headphones) may output a sound.

The sensor module 176 detects an operating state (eg, power or temperature) of the electronic device 101 or an external environmental state (eg, user state), and generates an electrical signal or data value corresponding to the sensed state. can do. According to an embodiment, 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 ). According to an embodiment, the interface 177 may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

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

The haptic module 179 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. According to an embodiment, 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 . According to an embodiment, the power management module 188 may be implemented as, for example, at least a part of a power management integrated circuit (PMIC).

The battery 189 may supply power to at least one component of the electronic device 101 . According to one embodiment, 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. According to one embodiment, the communication module 190 is a wireless communication module 192 (eg, a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 194 (eg, : LAN (local area network) communication module, or a power line communication module) may be included. A corresponding communication module among these communication modules is a first network 198 (eg, a short-range communication network such as Bluetooth, Wi-Fi direct or IrDA (infrared data association)) or a second network 199 (eg, a cellular network, the Internet). , or through a computer network (eg, a telecommunication network such as a LAN or WAN) to communicate with an external electronic device. These various types of communication modules may be integrated into one component (eg, a single chip) or may be implemented as a plurality of components (eg, multiple chips) separate from each other. 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 and authenticated.

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

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

According to an embodiment, 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 and 104 may be the same as or different from the electronic device 101 . According to an embodiment, all or a part of operations executed in the electronic device 101 may be executed in one or more of the external electronic devices 102 , 104 , or 108 . For example, when the electronic device 101 needs to perform a function or service automatically or in response to a request from a user or other device, the electronic device 101 may perform the function or service itself instead of executing the function or service itself. Alternatively or additionally, one or more external electronic devices may be requested to perform at least a part of the function or the service. The 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. For this purpose, for example, cloud computing, distributed computing, or client-server computing technology may be used.

1B is a diagram illustrating a network environment 100 including an electronic device according to various embodiments of the present disclosure. Referring to FIG. 1B , the network 100 according to various embodiments of the present disclosure includes an electronic device 101 , a first communication network 111a , a second communication network 112a , or a third communication network (not shown). may include

According to various embodiments, the electronic device 101 may operate in a dual SIM dual standby (DSDS) mode supporting a plurality of SIMs in one device. For example, the electronic device 101 may be equipped with two SIMs, a first SIM 111 and a second SIM 112 . The first SIM 111 and the second SIM 112 may be removable SIM (rSIM). The rSIM may be a SIM detachable from a slot provided in the electronic device 101 , and there is no limitation in its form/standard. For example, the electronic device 101 may be equipped with two SIM cards to support the two SIMs. Hereinafter, for convenience of description, the SIM card will be referred to as a SIM and used. As shown in FIG. 1B , the electronic device 101 may be equipped with two SIM cards, a first SIM 111 and a second SIM 112 . The electronic device 101 includes a first slot (not shown) and a second slot (not shown) as a first structure therein to accommodate the first SIM 111 and the second SIM 112 , respectively. may include

For example, the first SIM 111 is a SIM subscribed to a communication service provider of the first communication network 111a, and the electronic device 101 connects to the first communication network 111a using the first SIM 111 to wirelessly Communication services can be provided. The second SIM 112 is a SIM subscribed to a communication service provider of the second communication network 112a, and the electronic device 101 connects to the second communication network 112a using the second SIM 112 to provide a wireless communication service. can be provided. According to various embodiments, the electronic device 101 may include an embedded subscriber identity module (eSIM) (not shown). The eSIM may be referred to as an eUICC. The electronic device 101 may receive a wireless communication service by accessing a third communication network (not shown) using an eSIM (not shown). At least a portion of the first communication network 111a, the second communication network 112a, or the third communication network (not shown) may be provided by the same communication service provider, or may be provided by different communication service providers, respectively. If the first communication network 111a and the second communication network 112a are provided by the same communication operator, the first communication network 111a and the second communication network 112a may refer to the same network. have. Alternatively, different operators may share a communication network. For example, the first communication operator may use the first communication network 111a, and the second communication operator may also be set to use the second communication network 111a.

2A is a block diagram 200 of an electronic device 101 for supporting legacy network communication and 5G network communication, according to various embodiments. Referring to FIG. 2A , the electronic device 101 includes a first communication processor 212 , a second communication processor 214 , a first radio frequency integrated circuit (RFIC) 222 , a second RFIC 224 , and a third RFIC 226 , fourth RFIC 228 , first radio frequency front end (RFFE) 232 , second RFFE 234 , first antenna module 242 , second antenna module 244 , third An antenna module 246 and antennas 248 may be included. The electronic device 101 may further include a processor 120 and a memory 130 . The second network 199 may include a first cellular network 292 and a second cellular network 294 . According to another embodiment, the electronic device 101 may further include at least one component among the components illustrated in FIG. 1 , and the second network 199 may further include at least one other network. According to one embodiment, 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 communication module 192 . According to another embodiment, 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 cellular network 292 and legacy network communication through the established communication channel. According to various embodiments, the first cellular 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 cellular network 294 , and a 5G network through the established communication channel communication can be supported. According to various embodiments, the second cellular network 294 may be a 5G network defined by 3GPP. Additionally, according to an embodiment, the first communication processor 212 or the second communication processor 214 corresponds to another designated band (eg, about 6 GHz or less) among bands to be used for wireless communication with the second cellular network 294 . It is possible to support the establishment of a communication channel, and 5G network communication through the established communication channel.

The first communication processor 212 may transmit/receive data to and from the second communication processor 214 . For example, data that has been classified to be transmitted over the second cellular network 294 may be changed to be transmitted over the first cellular network 292 . In this case, the first communication processor 212 may receive transmission data from the second communication processor 214 . For example, the first communication processor 212 may transmit and receive data through the second communication processor 214 and the interprocessor interface 213 . The interprocessor interface 213 may be implemented as, for example, a universal asynchronous receiver/transmitter (UART) (eg, high speed-UART (HS-UART) or peripheral component interconnect bus express (PCIe) interface). Alternatively, the first communication processor 212 and the second communication processor 214 may exchange control information and packet data information using, for example, a shared memory. The communication processor 212 may transmit/receive various information to and from the second communication processor 214 , such as sensing information, information on output strength, and resource block (RB) allocation information.

Depending on the implementation, the first communication processor 212 may not be directly connected to the second communication processor 214 . In this case, the first communication processor 212 may transmit and receive data through the second communication processor 214 and the processor 120 (eg, an application processor). For example, 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. Alternatively, 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). .

According to one embodiment, the first communication processor 212 and the second communication processor 214 may be implemented in a single chip or a single package. According to various embodiments, 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 . have. For example, as shown in FIG. 2B , the unified communication processor 260 may support both functions for communication with the first cellular network 292 and the second cellular network 294 .

The first RFIC 222, when transmitting, transmits a baseband signal generated by the first communication processor 212 from about 700 MHz to about 700 MHz used for the first cellular network 292 (eg, a legacy network). It can be converted to a radio frequency (RF) signal of 3 GHz. 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 .

The second RFIC 224, when transmitting, uses the baseband signal generated by the first communication processor 212 or the second communication processor 214 to the second cellular 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). Upon reception, a 5G Sub6 RF signal is obtained from a second cellular network 294 (eg, 5G network) via an antenna (eg, second antenna module 244 ), and an RFFE (eg, second RFFE 234 ) ) can be preprocessed. 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 5G Above6 band (eg, about 6 GHz to about 60 GHz) to be used in the second cellular network 294 (eg, 5G network). It can be converted into an RF signal (hereinafter referred to as 5G Above6 RF signal). Upon reception, a 5G Above6 RF signal may be obtained from the second cellular 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 . According to one embodiment, the third RFFE 236 may be formed as part of the third RFIC 226 .

According to an embodiment, the electronic device 101 may include the fourth RFIC 228 separately from or as at least a part of the third RFIC 226 . In this case, 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. Upon reception, the 5G Above6 RF signal may be received from the second cellular network 294 (eg, 5G network) via an antenna (eg, antenna 248 ) and converted to an IF signal by the third RFIC 226 . have. The fourth RFIC 228 may convert the IF signal into a baseband signal for processing by the second communication processor 214 .

According to an embodiment, 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. According to various embodiments, when the first RFIC 222 and the second RFIC 224 in FIG. 2A or 2B are implemented as a single chip or a single package, they may be implemented as an integrated RFIC. In this case, the integrated RFIC is connected to the first RFFE 232 and the second RFFE 234 to convert a baseband signal into a signal of a band supported by the first RFFE 232 and/or the second RFFE 234 and , the converted signal may be transmitted to one of the first RFFE 232 and the second RFFE 234 . According to an embodiment, 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. According to an embodiment, 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.

According to an embodiment, the third RFIC 226 and the antenna 248 may be disposed on the same substrate to form the third antenna module 246 . For example, the communication module 192 or the processor 120 may be disposed on the first substrate (eg, main PCB). In this case, 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. By disposing the third RFIC 226 and the antenna 248 on the same substrate, it is possible to reduce the length of the transmission line therebetween. This, for example, can reduce loss (eg, attenuation) of a signal in a high-frequency band (eg, about 6 GHz to about 60 GHz) used for 5G network communication by the transmission line. Accordingly, the electronic device 101 may improve the quality or speed of communication with the second network 294 (eg, a 5G network).

According to an example, the antenna 248 may be formed as an antenna array including a plurality of antenna elements that may be used for beamforming. In this case, 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. During transmission, 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. . Upon reception, each of the plurality of phase shifters 238 may convert the phase of the 5G Above6 RF signal received from the outside through a 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 cellular network 294 (eg, 5G network) may be operated independently (eg, Stand-Alone (SA)) or connected to the first cellular network 292 (eg, legacy network). Example: Non-Stand Alone (NSA)). For example, the 5G network may have only an access network (eg, 5G radio access network (RAN) or next generation RAN (NG RAN)) and no core network (eg, next generation core (NGC)). In this case, after accessing the access network of the 5G network, 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) or protocol information for communication with a 5G network (eg, New Radio (NR) protocol information) is stored in the memory 230, and other components (eg, processor 120 , the first communication processor 212 , or the second communication processor 214 ).

3 is a diagram for explaining a connection to a cell of an electronic device according to various embodiments of the present disclosure;

According to various embodiments, the electronic device 101 (eg, at least one of the processor 120 , the first communication processor 212 , the second communication processor 214 , or the unified communication processor 260 ) includes: A first protocol stack 301 and a second protocol stack 303 may be executed. A first protocol stack 301 performs, for example, data processing associated with a first SIM 111 , and a second protocol stack 303 , for example, performs data processing associated with a second SIM 112 . can be performed. For convenience of description, the first protocol stack 301 performs an operation associated with the first SIM 111 that is an rSIM, and the second protocol stack 303 performs an operation associated with the second SIM 112 that is an rSIM. Although described as such, it will be understood by those skilled in the art that at least one protocol stack may perform operations associated with an eSIM (not shown). Although not shown, for example, the first protocol stack 301 and the second protocol stack 303 may share an upper layer (eg, an application layer). The first protocol stack 301 may generate a first baseband signal associated with the first SIM 111 by processing data from an upper layer and provide it to the RF device 310 . The second protocol stack 303 may generate a second baseband signal associated with the second SIM 112 by processing data from an upper layer and provide it to the RF device 310 . In FIG. 3 , although protocol stacks are defined for each SIM, this is exemplary and in another embodiment, a plurality of SIMs may be implemented to share one protocol stack.

The RF device 310 according to various embodiments may convert a baseband signal from the first protocol stack 301 and/or the second protocol stack 303 into an RF signal and output it through an antenna. The RF device 310 is, for example, a first RFIC 222 , a second RFIC 224 , a third RFIC 226 , a fourth RFIC 228 , and a first RFFE 232 of FIGS. 2A and 2B . , second RFFE 234 , third RFFE 236 , phase shifter 238 , first antenna module 242 , second antenna module 244 , third antenna module 246 , or antennas 248 . ) may include at least one of. For example, the first protocol stack 301 and/or the second protocol stack 303 may process a baseband signal from the RF device 310 and provide it to an upper layer (eg, an application layer). can In the DSDS mode, the signal associated with the first protocol stack 301 corresponding to the first SIM 111 may be processed by the RF device 310 and the second protocol stack corresponding to the second SIM 112 ( The signal associated with 303 may also be processed by the RF device 310 . The RF device 310 may be shared by the first SIM 111 and the second SIM 112 in DSDS mode, which is a signal associated with the first SIM 111 and a signal associated with the second SIM 112 . This may mean that all can be processed by the RF device 310 .

According to various embodiments, the electronic device 101 supports 5G communication (eg, 5 ^th generation system (5GS)) while the use of the RF device 310 is allocated to the first SIM 111 . The (or connected) first cell 350 (or the base station) may be accessed 321 . For example, the electronic device 101 may be in an RRC connected state after the camp-on state in the first cell 350, and in another example, an RRC idle state (or , RRC may be in an inactive state), and there is no limit to the RRC state. If the electronic device 101 receives system information on the first cell 350 , there is no limit to the state of the electronic device 101 , for example, Various embodiments may be applied even before the RRC connection is formed.

According to various embodiments, while the use of the RF device 310 is assigned to the second SIM 112 , the electronic device 101 connects 323 to the first cell 350 supporting (or connected to) 5GS. ), or may access ( 325 ) the second cell 360 supporting (or connected to) LTE communication (or, an evolved packet system (EPS)). If the electronic device 101 is set to search from the frequency associated with the EPS, the electronic device 101 may preferentially search for the second cell 360, and thus may be registered in the EPS. After being registered in EPS, in order to be registered as 5GS, the electronic device 101 must receive a handover command from the network to a cell supporting 5GS (eg, the first cell 350). can do. Although the handover command includes information on the target frequency and PCI, it may not be common to support handover from EPS to 5GS.

After being registered in EPS, in order to be registered as 5GS, the electronic device 101 may need to receive an RRC release message for redirection to 5GS from the network. Alternatively, in order to be registered as 5GS after being registered in EPS, the electronic device 101 receives information (eg, SIB 24) about a neighbor cell supporting the SA mode of 5GS from the network. , it is necessary to perform cell reselection using this. In the case of redirection or cell reselection, there is a possibility that the best cell may not be selected in a situation where a plurality of 5GS supporting (or connected) cells exist. In addition, when SIB 24 is not received, the electronic device 101 may not select a cell supporting the 5GS SA mode. Alternatively, in order to be registered as 5GS after being registered in EPS, the electronic device 101 searches for a frequency for 5GS and searches for a cell (eg, the second cell 360), and the second cell 360 It may be necessary to receive (eg, decode) all of the system information from , perform cell selection and RACH procedures, and perform 5GS registration. Even when cell acquisition is successful, if reading of system information fails thereafter, the electronic device 101 may not be registered as 5GS. In this case, since the corresponding cell is barred for a specified period (eg, 30 seconds), access to the corresponding cell may be restricted. Alternatively, even when the system information is read, if it is determined that the cell selection criterion is not satisfied, the electronic device 101 cannot be registered with 5GS. Even if registration in 5GS is successful, it may take a relatively long time to perform cell search, system information reading, and cell selection. If registration to 5GS fails according to the above, it may take a longer time because the above-described procedure must be performed again.

According to various embodiments, the electronic device 101 uses information about the first cell 350 obtained while performing the operation associated with the first SIM 111 to perform the operation associated with the second SIM 112 . available in case. In one example, a shared memory shared by the RRC layer of the first protocol stack 301 and the RRC layer of the second protocol stack 303 may be included (or defined) in the electronic device 101 . The protocol stacks 301 and 303 may store information about a cell (eg, at least one of cell identification information, frequency information, system information, PRACH transmission power, or path loss of PRACH) in a shared memory, and may be shared. have. In another example, the RRC layer of the second protocol stack 303 may request information of a cell corresponding to 5GS from the first protocol stack 301 , and the first protocol stack 301 may include the second protocol stack 303 . can provide information of the corresponding cell to . For example, the second protocol stack 303 may request information on a cell corresponding to 5GS from the first protocol stack 301 based on detection of an event requiring cell selection. Conversely, the first protocol stack 301 may request and receive information on a cell corresponding to 5GS from the second protocol stack 303 .

In one example, the electronic device 101 may store information of the first frequency corresponding to the first cell 350 in advance while performing the operation associated with the first SIM 111 . Thereafter, according to the DSDS mode, the use of the RF device 310 may be changed from the first SIM 111 to the second SIM 112 . In relation to the second SIM 112 , it is assumed that the electronic device 101 is connected to the second cell 360 supporting EPS (eg, RRC connected state or RRC idle state). When a trigger (eg, reception of an RRC release message or RLF confirmation (or declaration)) that requires cell selection of the second SIM 112 occurs, the electronic device 101 accompanies the current first SIM 111 . Cell search may be performed using a pre-stored first frequency corresponding to the first cell 350 being accessed based on . The electronic device 101 does not perform a cell search (eg, stored information-based cell search or full scan) set in response to the EPS, and is based on the current first SIM 111 . to perform cell search using the first frequency, which is information on the cell being accessed, for example, the electronic device 101 detects and/or decodes a synchronization signal block (SSB) at the first frequency. you can try

In one example, if the electronic device 101 succeeds in acquiring the cell at the first frequency, the electronic device 101 may transmit the PRACH preamble to the first cell 350 . Conventionally, upon successful cell acquisition of the first cell 350, the electronic device 101 receives system information, determines whether a cell selection condition is satisfied based on the system information, and satisfies the cell selection condition. In this case, it was necessary to camp on the first cell 350 and transmit the PRACH preamble. The electronic device 101 may directly transmit the PRACH preamble by using the pre-stored system information on the first cell 350 without performing the process of receiving system information and selecting a cell. Thereafter, if the RACH procedure is successful, the electronic device 101 may be registered with 5GS through the first cell 350 , and 5GS registration may be performed in a shorter time than before.

4A is a flowchart illustrating a method of operating an electronic device according to a comparative example for comparison with various embodiments. At least some of the operations according to the comparative example of FIG. 4A may be performed by the electronic device 101 according to various embodiments.

In operation 401 , the electronic device 101 (eg, at least one of the processor 120 , the first communication processor 212 , the second communication processor 214 , or the unified communication processor 260 ) receives the RRC from the network. You may receive a release message. For example, the electronic device 101 may access a cell supporting (or connected to) EPS while the use of the RF device 310 is allocated to the second SIM 112 . The electronic device 101 may access a cell supporting EPS based on, for example, radio access technology (RAT) of evolved universal mobile telecommunications system (UMTS) terrestrial radio access (E-UTRA). The electronic device 101 may receive an RRC release message (eg, an RRCConnectionRelease message of ^3rd generation partnership project (3GPP) technical specification (TS) 36.331) from a cell supporting EPS. The electronic device 101 may enter the idle state based on reception of the RRC release message.

In operation 403 , the electronic device 101 may determine whether redirection information to 5GS exists in the RRC release message. Table 1 is an example of a part of the RRC release message.

- TS 36.331: RRCConnectionRelease message
...
RRCConnectionRelease-v1530-IEs ::= SEQUENCE {
drb-ContinueROHC-r15 ENUMERATED {true} OPTIONAL, -- Cond UP-EDT
nextHopChainingCount-r15 NextHopChainingCount OPTIONAL, -- Cond EarlySec
measIdleConfig-r15 MeasIdleConfigDedicated-r15 OPTIONAL, -- Need ON
rrc-InactiveConfig-r15 RRC-InactiveConfig-r15 OPTIONAL, -- Need OR
cn-Type-r15 ENUMERATED {epc,fivegc} OPTIONAL, -- Need OR
nonCriticalExtension RRCConnectionRelease-v1540-IEs OPTIONAL
}
...

RedirectedCarrierInfo ::= CHOICE {
eutra ARFCN-ValueEUTRA,
geran Carrier Freqs GERAN,
utra-FDD ARFCN-ValueUTRA,
utra-TDD ARFCN-ValueUTRA,
cdma2000-HRPD CarrierFreqCDMA2000,
cdma2000-1xRTT CarrierFreqCDMA2000,
...,
utra-TDD-r10 CarrierFreqListUTRA-TDD-r10,
nr-r15 CarrierInfoNR-r15
}
...
CarrierInfoNR-r15 ::= SEQUENCE {
carrierFreq-r15 ARFCN-ValueNR-r15,
subcarrierSpacingSSB-r15 ENUMERATED {kHz15, kHz30, kHz120, kHz240},
smtc-r15 MTC-SSB-NR-r15 OPTIONAL -- Need OP
}

As shown in Table 1, the RRCConnectionRelease message may include a core network type (cn-type) indicating 5 ^th generation core (5GC) and a frequency associated with 5GS (eg, carrierFreq-r15 ARFCN-ValueNR-r15). have. The electronic device 101 may determine whether redirection information to 5GS is included in the RRC release message, based on whether a 5GS-related core network and/or a 5GS-related frequency is included.

When the RRC release message includes redirection information to 5GS (403 - Yes), the electronic device 101 may search for a cell corresponding to 5GS according to the redirection information in operation 405 . For example, the electronic device 101 may attempt to detect and/or decode an SSB from a cell corresponding to 5GS at a frequency associated with 5GS of the RRC release message.

If the RRC release message does not include redirection information to 5GS (403 - No), the electronic device 101 may search for a cell corresponding to 5GS identified based on SIB 24 in operation 407 . In 3GPP TS 36.331, SIB 24 is described as an IE (information element) of systeminformationblcoktype 24. SIB 24 may include information related only to NR neighbor cell and inter-RAT cell reselection for cell reselection, for example, information on NR frequencies supporting the SA mode of 5G. SIB 24 may include a common cell reselection parameter for frequency. SIB 24 may include, for example, frequency information (eg, ARFCN) of NR supporting SA mode. Frequency information of NR supporting SA mode may mean supporting 5GC (or 5GS). The electronic device 101 may attempt to detect and/or decode an SSB from a cell corresponding to 5GS at a frequency included in SIB 24 .

In operation 409 , the electronic device 101 may succeed in cell acquisition. For example, the electronic device 101 may determine the success of cell acquisition based on the BSS strength being greater than or equal to the specified strength and/or the decoding success of the BSS. The strength of the BSS and/or whether the decoding of the BSS succeeds or not is simply an exemplary parameter for determining whether the cell acquisition is successful, and there is no limitation on the parameter for determining whether the cell acquisition is successful. If cell acquisition is successful, the electronic device 101 may read system information (eg, SIB) from the corresponding cell in operation 411 . The electronic device 101 may read additional system information from the network based at least on information confirmed as a result of decoding of the BSS. In operation 413 , the electronic device 101 may select a cell based on system information and a measurement result. For example, the electronic device 101 may determine whether the cell selection condition is satisfied using a parameter of a cell selection criterion included in the system information and a measurement result. If the cell selection condition is satisfied, the electronic device 101 may select a corresponding cell and camp on. In operation 415 , the electronic device 101 may transmit a PRACH preamble for the selected cell. Although not shown, the electronic device 101 may perform a RACH procedure with the corresponding cell.

According to the above-described method, the electronic device 101 according to the comparative example obtains information on a cell supporting 5G SA while performing an operation associated with the first SIM 111, even if information on a cell supporting 5G SA is obtained. When the operation associated with 112 is performed, since information associated with the first SIM 111 cannot be used, the entire procedure as shown in FIG. 4A must be performed.

4B is a flowchart illustrating a method of operating an electronic device according to a comparative example for comparison with various embodiments. At least some of the operations according to the comparative example of FIG. 4B may be performed by the electronic device 101 according to various embodiments.

In operation 421 , the electronic device 101 (eg, at least one of the processor 120 , the first communication processor 212 , the second communication processor 214 , or the unified communication processor 260 ) is connected to the connected state. In (connected state), RLF (radio link failure) may be confirmed (or declared). For example, the electronic device 101 may be in a connected state while connected to a cell supporting (or connected to) EPS while the use of the RF device 310 is assigned to the second SIM 112 . can The electronic device 101 may access a cell supporting EPS based on, for example, radio access technology (RAT) of E-UTRA. In the connected state, the electronic device 101 may detect an RLF cause (eg, T310 timer expiration, random access problem, rlc-maximum number of attempts satisfaction, handover failure, etc.), and the RLF cause There is no limit to

In operation 423 , the electronic device 101 may first scan a cell corresponding to LTE communication (eg, EPS) and attempt re-establishment. For example, the electronic device 101 may be configured to scan a cell corresponding to the EPS based on checking the RLF while connected to the cell corresponding to the EPS. If a cell is identified as the cell corresponding to the EPS is scanned, it may be determined whether the cell is selected. If the cell corresponding to the EPS is not found, in operation 425 , the electronic device 101 may search for a cell corresponding to 5G communication (eg, 5GS). For example, the electronic device 101 may attempt to detect and/or decode an SSB from a cell corresponding to 5GS at a frequency corresponding to 5GS.

In operation 427 , the electronic device 101 may succeed in cell acquisition. Cell acquisition may be determined based on the strength of the SSB and/or the decoding result, as described with reference to FIG. 4A, and there is no limit to the conditions for determining whether the cell is successful. If the cell acquisition is successful, the electronic device 101 may read system information (eg, SIB) from the corresponding cell in operation 429 . In operation 431 , the electronic device 101 may select a cell based on system information and a measurement result. For example, the electronic device 101 may determine whether the cell selection condition is satisfied by using a parameter of the cell selection condition included in the system information and a measurement result. If the cell selection condition is satisfied, the electronic device 101 may select a corresponding cell and camp on. In operation 433 , the electronic device 101 may transmit a PRACH preamble for the selected cell. Although not shown, the electronic device 101 may perform a RACH procedure with the corresponding cell.

According to the above-described method, the electronic device 101 according to the comparative example obtains information on a cell supporting 5G SA while performing an operation associated with the first SIM 111, even if information on a cell supporting 5G SA is obtained. When the operation associated with 112 is performed, since information associated with the first SIM 111 cannot be used, the entire procedure as shown in FIG. 4B may have to be performed. In particular, when a cell corresponding to the EPS is detected and selected in operation 423 , registration of the electronic device 101 to 5GS may be further delayed.

5 is a flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure;

According to various embodiments, in operation 501 , at least one of the electronic device 101 (eg, the processor 120 , the first communication processor 212 , the second communication processor 214 , or the unified communication processor 260 ). One) may acquire at least one piece of information about a first cell corresponding to 5G communication (eg, 5GS) in relation to the first SIM 111 . For example, the electronic device 101 may obtain at least one piece of information about the first cell corresponding to 5GS while the use of the RF device 310 is allocated for the first SIM 111 . The electronic device 101 provides, for example, identification information for identifying the first cell (eg, PCI), the frequency of the first cell (eg, ARFCN), master information of the first cell, or the first At least one of the system information of one cell may be acquired, but there is no limitation on the type of information associated with the first cell.

According to various embodiments, in operation 503 , the electronic device 101 may access the first cell in association with the first SIM 111 . For example, the electronic device 101 may camp on the first cell and/or form an RRC connection with the first cell, but there is no limitation on the state of the connection to the first cell. In operation 505 , the electronic device 101 may store at least one piece of information about the first cell. For example, the electronic device 101 may store information on the first cell as information on a cell supporting 5G communication (eg, 5GS).

According to various embodiments, the use of the RF device 310 may be changed and assigned from the first SIM 111 to the second SIM 112 . In operation 507 , the electronic device 101 is connected to the second cell corresponding to LTE communication (eg, EPS) in relation to the second SIM 112 , and is configured to check an event requiring cell selection. Based on the first SIM, at least one piece of information about the first cell to which the electronic device is accessing may be read. For example, the electronic device 101 may be in a connected state with the second cell corresponding to the EPS, and in this case, may identify the RLF as an event. As another example, the electronic device 101 may check the reception of the RRC release message from the network as an event. The electronic device 101 may read information acquired and stored during the operation of the first SIM 111 based on the event detection.

According to various embodiments, in operation 509 , when the signal strength from the first cell measured using at least one piece of information about the first cell satisfies a specified condition, the electronic device 101 transmits the information to the first cell. PRACH preamble can be transmitted for The electronic device 101 uses the frequency information (eg, ARFCN) among the at least one piece of information on the first cell to receive a signal (eg, SSB) from the first cell at the corresponding frequency. detection and/or decoding of When the signal strength of the first cell satisfies a specified condition (eg, greater than or equal to a specified threshold), the electronic device 101 may determine that the first cell is detected. The electronic device 101 determines that the first cell has been detected when the signal strength of the first cell satisfies the specified condition, and the cell identification information confirmed as a result of decoding is the same as the read cell identification information. may be Determining that the first cell has been detected may be expressed as a successful cell acquisition for the first cell. The electronic device 101 may skip reception of the system information from the first cell because the system information for the first cell is previously stored. In addition, the electronic device 101 may be set to skip the operation of determining whether the first cell satisfies the cell selection condition. However, skipping the reception of the system information and the determination of whether the cell selection condition is satisfied is an example, and at least some of both operations may be performed. For example, if cell acquisition for the first cell is successful, the electronic device 101 skips receiving system information and determining whether a cell selection condition is satisfied, camps on the first cell and performs the RACH procedure. can The electronic device 101 may transmit the PRACH preamble to the first cell as at least part of the RACH procedure. Although not shown, the electronic device 101 may perform a procedure for registration in 5GS (eg, a registration procedure) after performing the RACH procedure, and thus the electronic device 101 may be registered in 5GS. .

As described above, when the electronic device 101 accesses the first cell corresponding to 5GS in association with the first SIM 111 , it is relatively quickly associated with the second SIM 112 using the corresponding information. It can be registered with 5GS.

6 is a flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure;

According to various embodiments, the electronic device 101 (eg, at least one of the processor 120 , the first communication processor 212 , the second communication processor 214 , or the unified communication processor 260 ) includes: With respect to the first SIM 111 , in operation 601 , at least one piece of information about a first cell corresponding to 5G communication (eg, 5GS) may be acquired. For example, the electronic device 101 may obtain at least one piece of information about the first cell corresponding to 5GS while the use of the RF device 310 is allocated for the first SIM 111 . In operation 603 , the electronic device 101 may access the first cell in association with the first SIM 111 . For example, the electronic device 101 may camp on the first cell and/or form an RRC connection with the first cell, but there is no limit to the state of the connection to the first cell. In operation 605, the electronic device 101 may store at least one piece of information about the first cell.

According to various embodiments, the use of the RF device 310 may be changed and assigned from the first SIM 111 to the second SIM 112 . The electronic device 101 may receive an RRC release message (eg, an RRCConnectionRelease message) in operation 607 in association with the second SIM 112 . For example, the electronic device 101 may receive the RRC release message while accessing the second cell corresponding to the EPS. Based on the confirmation of reception of the RRC release message, the electronic device 101 may read at least one piece of information about the first cell to which the electronic device 101 is accessing based on the first SIM in operation 609 .

According to various embodiments, the electronic device 101 may search for a cell based on at least one piece of information about the first cell in operation 611 . The electronic device 101 uses the frequency information (eg, ARFCN) among the at least one piece of information on the first cell to receive a signal (eg, SSB) from the first cell at the corresponding frequency. detection and/or decoding of In operation 613 , the electronic device 101 may succeed in cell acquisition. For example, when the strength of the signal from the first cell satisfies a specified condition, the electronic device 101 may determine that the cell acquisition is successful. In one example, the electronic device 101 may determine that the cell acquisition has been successful when the reference signal received power (RSRP) for the signal from the first cell is -95 dBm or more, but the success criterion is not limited. . RSRP is also merely exemplary, and there is no limitation as long as it is a parameter indicating the strength and/or goodness of the received signal. The electronic device 101 may additionally determine that the cell acquisition is successful when the cell identification information confirmed as a result of decoding the SSB is the same as the previously stored cell identification information of the first cell. In another example, the electronic device 101 obtains a cell when the cell identification information confirmed as a result of decoding the signal is the same as the pre-stored cell identification information of the first cell without considering the signal strength from the first cell It may also be configured to determine that it has succeeded. When cell acquisition is successful, the electronic device 101 may skip reception of system information as in operation 615 . Since the electronic device 101 has already stored the system information for the first cell, the electronic device 101 may skip the reception of the system information. However, as described above, the skip of the reception of the system information is exemplary, and the electronic device 101 according to various embodiments may be configured to receive the system information after successful cell acquisition. For example, if the cell acquisition for the first cell is successful, the electronic device 101 may skip determining whether the cell selection condition is satisfied, camp on the first cell and perform the RACH procedure. Meanwhile, whether the cell selection condition is satisfied is also an example, and the electronic device 101 may be configured to determine whether the cell selection condition is satisfied. For example, the electronic device 101 may check a parameter constituting a cell selection condition from the system information about the first cell stored in advance, and the first cell selects the cell selection condition using the measurement result and the checked parameter. You can also decide whether or not you are satisfied.

According to various embodiments, in operation 617 , the electronic device 101 may transmit a PRACH preamble to the first cell as at least part of the RACH procedure. Although not shown, the electronic device 101 may perform a procedure for registration in 5GS (eg, a registration procedure) after performing the RACH procedure, and thus the electronic device 101 may be registered in 5GS. .

As described above, when the electronic device 101 accesses the first cell corresponding to 5GS in association with the first SIM 111 , it is relatively quickly associated with the second SIM 112 using the corresponding information. It can be registered with 5GS.

7 is a flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure.

According to various embodiments, in operation 701 , at least one of the electronic device 101 (eg, the processor 120 , the first communication processor 212 , the second communication processor 214 , or the unified communication processor 260 ) One) may receive an RRC release message (eg, an RRCConnectionRelease message) in association with the second SIM 112 . For example, it is assumed that the electronic device 101 receives an RRC release message while connected to the second cell corresponding to the EPS. Based on the reception of the RRC release message, in operation 703 , the electronic device 101 may read information on the first cell to which the electronic device 101 is accessing based on the first SIM 111 . For example, before operation 701 , the electronic device 101 may obtain information on the first cell corresponding to 5GS in association with the first SIM 111 and store the information in advance. The electronic device 101 may read the previously stored information on the first cell based on the reception of the RRC release message. In operation 705, the electronic device 101 may search for a cell based on at least one piece of information about the first cell. For example, the electronic device 101 receives a signal from the first cell at a corresponding frequency (eg, ARFCN) based on frequency information (eg, ARFCN) among the read information on the first cell. SSB) detection and/or decoding may be attempted.

According to various embodiments, the electronic device 101 may determine whether cell acquisition is successful in operation 707 . For example, in operation 705 , in operation 705 , the strength of a signal measured at a corresponding frequency satisfies a specified condition (eg, greater than or equal to a specified threshold strength) and/or cell identification information confirmed as a result of decoding is stored in advance Based on whether or not the cell identification information for the first cell is the same, it may be determined whether the cell acquisition is successful. If the cell acquisition is successful (707-Yes), the electronic device 101 may skip the reception of system information in operation 709 . In operation 711 , the electronic device 101 may transmit a PRACH preamble with respect to the first cell based on at least one piece of information about the first cell. For example, if the cell acquisition for the first cell is successful, the electronic device 101 may skip determining whether the cell selection condition is satisfied, camp on the first cell and perform the RACH procedure. Whether the cell selection condition is satisfied is also an example, and the electronic device 101 may be configured to determine whether the cell selection condition is satisfied. For example, the electronic device 101 may check a parameter constituting a cell selection condition from the system information about the first cell stored in advance, and the first cell selects the cell selection condition using the measurement result and the checked parameter. You can also decide whether or not you are satisfied. After performing the RACH procedure, the electronic device 101 may perform a procedure (eg, a registration procedure) for registration with 5GS, and accordingly, the electronic device 101 may be registered with 5GS.

According to various embodiments, when cell acquisition fails (707-NO), the electronic device 101 may determine whether redirection information to 5GS exists in the RRC release message in operation 713 . For example, the electronic device 101 determines whether redirection information to 5GS is included based on whether a frequency associated with 5GS and/or a core network associated with 5GS is included in the RRCConnectionRelease message as shown in Table 1 can do. When the redirection information to 5GS is included in the RRC release message (713-Yes), the electronic device 101 searches for a cell corresponding to 5G communication (eg, 5GS) according to the redirection information in operation 715 to obtain a cell can be successful For example, the electronic device 101 may perform cell search at the frequency of ARFCN corresponding to 5GS. The electronic device 101 may detect a signal (eg, SSB) from a cell at a corresponding frequency and decode the corresponding signal. If the redirection information to 5GS is not included in the RRC release message (713-No), the electronic device 101 searches for a cell corresponding to 5GS that is checked based on SIB 24 received from the serving cell in operation 717. Cell acquisition is successful. For example, the electronic device 101 may detect a signal (eg, SSB) from the cell at a frequency corresponding to a cell supporting 5G SA included in SIB 24 and decode the signal. .

According to various embodiments, after successful cell acquisition in operation 715 and successful cell acquisition in operation 717 , the electronic device 101 may read system information in operation 719 . In operation 721 , the electronic device 101 may select a cell based on system information and a measurement result. The electronic device 101 may check the parameters constituting the cell selection condition from the system information read in operation 719 , and may determine whether the corresponding cell satisfies the cell selection condition using the measurement result and the checked parameter. . When the cell selection condition is satisfied, the electronic device 101 may camp on the corresponding cell. The electronic device 101 may perform the RACH procedure after camp-on in the corresponding cell. As part of the RACH procedure, the electronic device 101 may transmit a PRACH preamble to the selected cell in operation 723 .

8 is a flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure;

According to various embodiments, the electronic device 101 (eg, at least one of the processor 120 , the first communication processor 212 , the second communication processor 214 , or the unified communication processor 260 ) includes: With respect to the first SIM 111 , in operation 801 , at least one piece of information about a first cell corresponding to 5G communication (eg, 5GS) may be acquired. For example, the electronic device 101 may obtain at least one piece of information about the first cell corresponding to 5GS while the use of the RF device 310 is allocated for the first SIM 111 . In operation 803 , the electronic device 101 may access the first cell in association with the first SIM 111 . For example, the electronic device 101 may camp on the first cell and/or form an RRC connection with the first cell, but there is no limitation on the state of the connection to the first cell. In operation 805 , the electronic device 101 may store at least one piece of information about the first cell.

According to various embodiments, the use of the RF device 310 may be changed and assigned from the first SIM 111 to the second SIM 112 . In operation 807 , the electronic device 101 may check the RLF while connected to the second cell in relation to the second SIM 112 . For example, the electronic device 101 may detect an RLF cause (eg, T310 timer expiration, random access problem, rlc-maximum number of attempts satisfaction, handover failure, etc.), and the RLF cause There is no limit to Based on the confirmation of the RLF, the electronic device 101 may read at least one piece of information about the first cell to which the electronic device 101 is accessing based on the first SIM in operation 809 .

According to various embodiments, the electronic device 101 may search for a cell based on at least one piece of information about the first cell in operation 811 . The electronic device 101 uses the frequency information (eg, ARFCN) among the at least one piece of information on the first cell to receive a signal (eg, SSB) from the first cell at the corresponding frequency. detection and/or decoding of In operation 813 , the electronic device 101 may succeed in cell acquisition. For example, the electronic device 101 performs cell acquisition when the strength of the signal from the first cell satisfies a specified condition and/or when the cell identification information confirmed as a result of decoding is the same as the cell identification information of the first cell. can be considered successful. When cell acquisition is successful, the electronic device 101 may skip reception of system information as in operation 815 . Since the electronic device 101 has already stored the system information for the first cell, the electronic device 101 may skip the reception of the system information. However, as described above, the skip of the reception of the system information is exemplary, and the electronic device 101 according to various embodiments may be configured to receive the system information after successful cell acquisition. For example, if cell acquisition for the first cell is successful, the electronic device 101 may skip determining whether the cell selection condition is satisfied, camp on the first cell and perform the RACH procedure. Meanwhile, whether the cell selection condition is satisfied is also an example, and the electronic device 101 may be configured to determine whether the cell selection condition is satisfied. For example, the electronic device 101 may check a parameter constituting the cell selection condition from the system information about the first cell stored in advance, and the first cell selects the cell selection condition using the measurement result and the checked parameter. You can also decide whether or not you are satisfied.

According to various embodiments, in operation 817 , the electronic device 101 may transmit a PRACH preamble to the first cell as at least part of the RACH procedure. Although not shown, the electronic device 101 may perform a procedure for registration in 5GS (eg, a registration procedure) after performing the RACH procedure, and thus the electronic device 101 may be registered in 5GS. .

As described above, when the electronic device 101 accesses the first cell corresponding to 5GS in association with the first SIM 111 , it is relatively quickly associated with the second SIM 112 using the corresponding information. It can be registered with 5GS.

9 is a flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure;

According to various embodiments, in operation 901 , at least one of the electronic device 101 (eg, the processor 120 , the first communication processor 212 , the second communication processor 214 , or the unified communication processor 260 ) One) may check the RLF in a state connected to the second cell in relation to the second SIM 112 . For example, the electronic device 101 may detect the cause of the RLF while connected to the second cell corresponding to the EPS. Based on the RLF check, in operation 903 , the electronic device 101 may read information about the first cell to which the electronic device 101 is accessing based on the first SIM 111 . The electronic device 101 may read the previously stored information on the first cell based on the reception of the RRC release message. In operation 905 , the electronic device 101 may search for a cell based on at least one piece of information about the first cell. For example, the electronic device 101 receives a signal from the first cell at a corresponding frequency (eg, ARFCN) based on frequency information (eg, ARFCN) among the read information on the first cell. SSB) detection and/or decoding may be attempted.

According to various embodiments, the electronic device 101 may determine whether cell acquisition is successful in operation 907 . For example, in operation 905 , in operation 905 , the strength of a signal measured at a corresponding frequency satisfies a specified condition (eg, greater than or equal to a specified threshold strength) and/or cell identification information confirmed as a result of decoding is stored in advance Based on whether or not the cell identification information for the first cell is the same, it may be determined whether the cell acquisition is successful. If the cell acquisition is successful (907-Yes), the electronic device 101 may skip the reception of system information in operation 909 . In operation 911, the electronic device 101 may transmit a PRACH preamble to the first cell based on at least one piece of information about the first cell. For example, if the cell acquisition for the first cell is successful, the electronic device 101 may skip determining whether the cell selection condition is satisfied, camp on the first cell and perform the RACH procedure. Whether the cell selection condition is satisfied is also an example, and the electronic device 101 may be configured to determine whether the cell selection condition is satisfied. For example, the electronic device 101 may check a parameter constituting a cell selection condition from the system information about the first cell stored in advance, and the first cell selects the cell selection condition using the measurement result and the checked parameter. You can also decide whether or not you are satisfied. After performing the RACH procedure, the electronic device 101 may perform a procedure (eg, a registration procedure) for registration with 5GS, and accordingly, the electronic device 101 may be registered with 5GS. When the cell acquisition fails (907 - NO), the electronic device 101 may search for a cell corresponding to LTE communication (eg, EPS) in operation 913 . When the electronic device 101 succeeds in searching for a cell corresponding to the EPS, the electronic device 101 may perform RRC re-establishment.

10 is a flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure;

According to various embodiments, in operation 1001 , at least one of the electronic device 101 (eg, the processor 120 , the first communication processor 212 , the second communication processor 214 , or the unified communication processor 260 ). One) may check the RLF in a state connected to the second cell in relation to the second SIM 112 . For example, the electronic device 101 may detect the cause of the RLF while connected to the second cell corresponding to the EPS.

According to various embodiments, in operation 1003 , the electronic device 101 may determine whether an IMS call is performed before the RLF check. For example, the electronic device 101 may determine whether a VoLTE call is being performed in relation to the second SIM 112 . If the IMS call is not being performed (1003 - No), the electronic device 101 receives at least one piece of information on the first cell to which the electronic device is accessing based on the first SIM 111 in operation 1005 . can be read The electronic device 101 may read the previously stored information on the first cell based on the reception of the RRC release message. In operation 1007 , the electronic device 101 may search for a cell based on at least one piece of information about the first cell. For example, the electronic device 101 receives a signal from the first cell at the corresponding frequency (eg, ARFCN) based on frequency information (eg, ARFCN) among the read information on the first cell. SSB) detection and/or decoding may be attempted. Thereafter, as described with reference to FIGS. 8 and/or 9 , when cell acquisition is successful, the electronic device 101 may perform a RACH procedure and register with 5GS.

According to various embodiments, when an IMS call is being performed (1003 - Yes), the electronic device 101 may search for a cell corresponding to LTE communication (eg, EPS) in operation 1009 . If the electronic device 101 is registered as 5GS from the EPS while the IMS call is being performed, there is a possibility that the IMS call may be disconnected. can be set to perform.

11A is a flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure;

According to various embodiments, the electronic device 101 (eg, at least one of the processor 120 , the first communication processor 212 , the second communication processor 214 , or the unified communication processor 260 ) includes: With respect to the first SIM 111 , in operation 1101 , at least one piece of information about a first cell corresponding to 5G communication (eg, 5GS) may be acquired. For example, the electronic device 101 may obtain at least one piece of information about the first cell corresponding to 5GS while the use of the RF device 310 is allocated for the first SIM 111 . In operation 1103 , the electronic device 101 may access the first cell in association with the first SIM 111 . For example, the electronic device 101 may camp on the first cell and/or form an RRC connection with the first cell, but there is no limitation on the state of the connection to the first cell. In operation 1105 , the electronic device 101 may store at least one piece of information about the first cell. The electronic device 101 may determine the transmission power of the PRACH associated with the first cell. For example, the electronic device 101 may determine the transmission power of the PRACH based on Equation (1).

(UE 최대 파워)과,

(PRACH 타겟 파워) 및

(경로 손실)의 합계 중 작은 값을 PRACH의 송신 파워로 결정할 수 있다. 수학식 1에서,

는, 송신 기회(transmission occasion) i 내에서의, 서빙 셀 c의 캐리어 주파수 f의 활성화된 업 링크 밴드위쓰 파트(UP BWP) 'b' 상의 PRACH의 송신 파워를 의미할 수 있다.

는 송신 기회 i 내에서의 서빙 셀 c의 캐리어 주파수 f에 대한 3GPP TS 38.101-1, 3GPP TS 38.101-2에 정의된 사용자 장치(UE)별 최대 출력 파워(maximum output power)일 수 있다.

는 송신 기회 i 내에서의, 서빙 셀 c의 캐리어 주파수 f의 활성화된 업 링크 밴드위쓰 파트(UP BWP) 'b' 에 대한 higher layers에 의하여 제공되는 PRACH 타겟 수신 파워일 수 있다.

는 서빙 셀 c의 활성화된 다운링크 밴드위쓰 파트(DL BWP) 상의 PRACH 송신과 연관된 DL RS(downlink reference signal)에 기반한 캐리어 주파수 f의 활성화된 업 링크 밴드위쓰 파트(UP BWP) 'b'에 대한 경로 손실(path loss)일 수 있다. 경로 손실은, 예를 들어 referenceSignalPower로부터 higher layer 피터링된 RSRP(dBm)를 뺀 값으로 dB 단위로 전자 장치(101)에 의하여 계산될 수 있다. referenceSignalPower는, SystemInformationBlcokType1에 의하여 제공되는 SS-PBCHBlcokPower일 수 있다. 전자 장치(101)는, 제 1 SIM(111)의 동작 중에 제 1 셀에 대한 PRACH 송신 파워 및/또는 경로 손실을, 제 1 셀에 대한 정보 중 하나로서 저장할 수 있다.The electronic device 101,

(UE maximum power) and,

(PRACH target power) and

A smaller value among the sum of (path loss) may be determined as the transmit power of the PRACH. In Equation 1,

may mean the transmission power of the PRACH on the activated uplink bandwidth part (UP BWP) 'b' of the carrier frequency f of the serving cell c within the transmission occasion i.

may be the maximum output power for each user equipment (UE) defined in 3GPP TS 38.101-1 and 3GPP TS 38.101-2 for the carrier frequency f of the serving cell c within the transmission opportunity i.

may be the PRACH target reception power provided by higher layers for the activated uplink bandwidth part (UP BWP) 'b' of the carrier frequency f of the serving cell c within the transmission opportunity i.

For the activated uplink bandwidth part (UP BWP) 'b' of the carrier frequency f based on a DL RS (downlink reference signal) associated with PRACH transmission on the activated downlink bandwidth part (DL BWP) of the serving cell c It may be a path loss. The path loss is, for example, a value obtained by subtracting a higher layer filtered RSRP (dBm) from referenceSignalPower, and may be calculated by the electronic device 101 in dB units. referenceSignalPower may be SS-PBCHBlcokPower provided by SystemInformationBlcokType1. The electronic device 101 may store the PRACH transmission power and/or path loss for the first cell as one of information on the first cell during the operation of the first SIM 111 .

According to various embodiments, the use of the RF device 310 may be changed and assigned from the first SIM 111 to the second SIM 112 . In operation 1107 , the electronic device 101 confirms an event for which cell selection is required while connected to a second cell corresponding to LTE communication (eg, EPS) in relation to the second SIM 112 . based on the first SIM, at least one piece of information about the first cell to which the electronic device is accessing may be read. In operation 1109 , the electronic device 101 may confirm that the signal strength from the first cell measured using at least one piece of information about the first cell satisfies a specified condition. As described above, the electronic device 101 detects a signal (eg, SSB) from the first cell at a corresponding frequency based on frequency information (eg, ARFCN) among information on the first cell. and/or decode. The electronic device 101 may confirm that the cell acquisition for the first cell is successful.

According to various embodiments, in operation 1111 , the electronic device 101 determines the strength of the PRACH transmission power for the first cell associated with the second SIM 112 based on at least one piece of information about the first cell. can In one example, the electronic device 101 may determine the PRACH transmission power determined in association with the first SIM 111 as the PRACH transmission power associated with the second SIM 112 . In another example, the electronic device 101 may load the path loss for the PRACH determined in association with the first SIM 111 . The electronic device 101 may determine the smaller value of the sum of the SRS target power and the loaded path loss identified in association with the second SIM 112 and the maximum UE power as the SRS transmission power. In operation 1113 , the electronic device 101 may transmit a PRACH preamble to the first cell based on the determined PRACH transmission power.

11B is a flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure;

According to various embodiments, the electronic device 101 (eg, at least one of the processor 120 , the first communication processor 212 , the second communication processor 214 , or the unified communication processor 260 ) includes: With respect to the first SIM 111 , in operation 1121 , at least one piece of information about a first cell corresponding to 5G communication (eg, 5GS) may be acquired. For example, the electronic device 101 may obtain at least one piece of information about the first cell corresponding to 5GS while the use of the RF device 310 is allocated for the first SIM 111 . In operation 1123 , the electronic device 101 may access the first cell in association with the first SIM 111 . For example, the electronic device 101 may camp on the first cell and/or form an RRC connection with the first cell, but there is no limit to the state of the connection to the first cell. In operation 1125 , the electronic device 101 may store at least one piece of information about the first cell. The electronic device 101 may store the transmission power and/or path loss of the PRACH for the first cell as one of information on the first cell.

According to various embodiments, the use of the RF device 310 may be changed and assigned from the first SIM 111 to the second SIM 112 . In operation 1127 , the electronic device 101 is connected to the second cell corresponding to the LTE communication (eg, EPS) in relation to the second SIM 112 , to check the event for which cell selection is required. Based on the first SIM, at least one piece of information about the first cell to which the electronic device is accessing may be read. In operation 1129 , the electronic device 101 may confirm that the signal strength measured from the first cell satisfies a specified condition using at least one piece of information about the first cell. As described above, the electronic device 101 detects a signal (eg, SSB) from the first cell at a corresponding frequency based on frequency information (eg, ARFCN) among information on the first cell. and/or decode. The electronic device 101 may confirm that the cell acquisition for the first cell is successful.

According to various embodiments, in operation 1131 , the electronic device 101 may determine the first strength of the path loss of the PRACH based on the measurement result associated with the second SIM 112 . For example, the electronic device 101 may identify the first strength of the path loss of the PRACH based on the measurement result of the signal from the first cell measured during operation 1129 . In operation 1133 , the electronic device 101 may compare the first intensity with the second intensity of the path loss of the PRACH included in the at least one piece of information on the first cell. For example, the information on the first cell read in operation 1127 may include the second strength of the path loss of the PRACH identified in association with the first SIM 111 . The electronic device 101 may compare the first intensity confirmed in association with the second SIM 112 and the second intensity stored during the operation of the first SIM 111 .

According to various embodiments, the electronic device 101 may determine the PRACH transmission power based on the comparison result in operation 1135 . In operation 1137 , the electronic device 101 may transmit a PRACH preamble to the first cell based on the determined PRACH transmission power. In one example, the electronic device 101 may determine a larger value of the first intensity and the second intensity as the path loss of the PRACH. The electronic device 101 may determine the smaller of the determined sum of the path loss and the PRACH target power and the UE maximum power as the PRACH transmission power. Accordingly, the probability that the RACH procedure fails may be reduced because the PRACH transmission power is determined to be relatively low. In another example, the electronic device 101 may determine the smaller of the first intensity and the second intensity as the path loss of the PRACH. Accordingly, the possibility that excessive power consumption is generated in the RACH procedure may be reduced.

According to various embodiments of the present disclosure, the electronic device 101 includes at least one processor (eg, a first SIM (eg, the first SIM 111 ) and a second SIM (eg, the second SIM 112 ) connected to each other). at least one of processor 120 , first communication processor 212 , second communication processor 214 , or unified communication processor 260 ), and for communication based on the first SIM and communication based on the second SIM. at least one RF device used (eg, RF device 310 ), wherein the at least one processor is configured to: obtain at least one information about a first cell, access the first cell based on the at least one information about the first cell, and store the at least one information about the first cell While being set and the use of the at least one RF device is changed and assigned from the first SIM to the second SIM, in the state connected to the second cell corresponding to LTE communication, check an event requiring cell selection reads the at least one piece of information on the first cell to which the electronic device is accessing based on the first SIM, and the first information measured using the at least one piece of information on the first cell When the strength of a signal from one cell satisfies a specified condition, it may be configured to transmit a PRACH preamble message to the first cell.

According to various embodiments, the at least one processor reads the at least one piece of information about the first cell to which the electronic device is accessing based on the first SIM based on the event confirmation. At least in part, based on confirming the reception of the RRC release message from the second cell as the event, the electronic device is configured to read the at least one information about the first cell to which the electronic device is accessing based on a first SIM can

According to various embodiments, the at least one processor, when the strength of the signal from the first cell does not satisfy a specified condition, a cell supporting 5G communication included in the redirection information included in the RRC release message It may be further set to search.

According to various embodiments, the at least one processor does not satisfy a condition in which the signal strength from the first cell is specified, and information associated with a cell supporting 5G communication is included in the redirection information included in the RRC release message. If not included, based on the SIB 24 received from the first cell, it may be further configured to search for a cell supporting 5G SA.

According to various embodiments, the at least one processor reads the at least one piece of information about the first cell to which the electronic device is accessing based on the first SIM based on the event confirmation. At least in part, based on detecting an RLF cause in a state in which the second cell is connected, the electronic device may be configured to read the at least one piece of information about the connected first cell based on the first SIM. .

According to various embodiments, the at least one processor is, based on detecting an RLF cause in a state connected to the second cell, the at least one for the first cell to which the electronic device is accessing based on a first SIM As at least part of an operation of reading information of The device may be configured to read the at least one piece of information about the first cell being accessed.

According to various embodiments of the present disclosure, the at least one processor may be configured to: When the strength of a signal from the first cell measured using the at least one piece of information on the first cell satisfies the specified condition, the first As at least part of the operation of transmitting the PRACH preamble message to a cell, the strength of the signal from the first cell satisfies the specified condition, and the cell identification information confirmed as a result of decoding the signal is transmitted to the read first cell If it is the same as cell identification information of the at least one piece of information, it may be configured to transmit the PRACH preamble message to the first cell.

According to various embodiments, the at least one processor is configured to store the at least one information about the first cell while the use of the at least one RF device is changed from the first SIM to the second SIM and assigned. It may be further configured to attempt to detect and/or decode the signal from the first cell at the included frequency.

According to various embodiments, the at least one processor may be further configured to check the PRACH transmission power corresponding to the PRACH preamble message from the read at least one piece of information on the first cell.

According to various embodiments, the at least one processor checks a first path loss of a PRACH corresponding to the PRACH preamble message based on a measurement result of the signal from the first cell, and the read first From the at least one information about the cell, check a second pathloss of the PRACH, select one pathloss based on a comparison result of the first pathloss and the second pathloss, and determine the selected pathloss It may be further configured to determine the PRACH transmission power corresponding to the PRACH preamble message by using the .

According to various embodiments, the electronic device 101 supports a first SIM and a second SIM, and includes at least one RF device used for communication based on the first SIM and communication based on the second SIM. The method of operation includes, while use of the at least one RF device is assigned to the first SIM, obtaining at least one information about a first cell corresponding to 5G communication, the at least one information about the first cell an operation of accessing the first cell based on the information of While usage is changed from the first SIM to the second SIM and assigned, in a state in which access to a second cell corresponding to LTE communication, cell selection is required based on event confirmation, based on the first SIM reading the at least one piece of information about the first cell being accessed by the electronic device, and the intensity of a signal from the first cell measured using the at least one piece of information about the first cell when satisfies the specified condition, transmitting a PRACH preamble message to the first cell.

According to various embodiments, the reading of the at least one piece of information on the first cell to which the electronic device is accessing based on the first SIM based on the event confirmation may include: RRC from the second cell Based on confirming the reception of the release message as the event, the at least one piece of information about the first cell to which the electronic device is accessing may be read based on the first SIM.

According to various embodiments, the method includes searching for a cell supporting 5G communication included in the redirection information included in the RRC release message when the strength of the signal from the first cell does not satisfy a specified condition. It may further include an action.

According to various embodiments, in the method of operation, the strength of the signal from the first cell does not satisfy a specified condition, and information associated with a cell supporting 5G communication is not included in the redirection information included in the RRC release message. Otherwise, based on the SIB 24 received from the first cell, the operation of searching for a cell supporting 5G SA may be further included.

According to various embodiments, the reading of the at least one piece of information on the first cell to which the electronic device is connected based on the first SIM based on the event check may include: Based on detecting the cause of the RLF in the state, the at least one piece of information about the first cell to which the electronic device is accessing may be read based on the first SIM.

Reading the at least one piece of information about the first cell being accessed by the electronic device based on a first SIM based on detecting the cause of the RLF while connected to the second cell, according to various embodiments When the electronic device does not perform an IMS-based call before the detection of the RLF cause, based on the detection of the RLF cause, the electronic device is connected to the first cell based on the first SIM. It is possible to read the at least one piece of information about

According to various embodiments, when the strength of a signal from the first cell measured using the at least one piece of information on the first cell satisfies the specified condition, the PRACH preamble message for the first cell In the operation of transmitting , the strength of the signal from the first cell satisfies the specified condition, the cell identification information of the at least one piece of information about the first cell from which the cell identification information confirmed as a result of decoding the signal is read In the same case as , the PRACH preamble message may be transmitted to the first cell.

According to various embodiments, the method includes: while the use of the at least one RF device is changed from the first SIM to the second SIM and assigned, the information included in the at least one information about the first cell The method may further include attempting to detect and/or decode the signal from the first cell in frequency.

According to various embodiments, the operating method may further include checking the PRACH transmission power corresponding to the PRACH preamble message from the read at least one piece of information on the first cell.

According to various embodiments of the present disclosure, the method includes: identifying a first path loss of a PRACH corresponding to the PRACH preamble message based on a measurement result of the signal from the first cell; identifying a second path loss of a PRACH, selecting one path loss based on a comparison result of the first path loss and the second path loss, and the selected path The method may further include determining a PRACH transmission power corresponding to the PRACH preamble message by using the loss.

The electronic device according to various embodiments disclosed in this document 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. The electronic device according to the embodiment of the present document is not limited to the above-described devices.

The various embodiments of this document and the terms used therein are not intended to limit the technical features described in this document to specific embodiments, and should be understood to include various modifications, equivalents, or substitutions of the embodiments. In connection with the description of the drawings, like reference numerals may be used for similar or related components. The singular form of the noun corresponding to the item may include one or more of the item, unless the relevant context clearly dictates otherwise. As used herein, "A or B", "at least one of A and B", "at least one of A or B", "A, B or C", "at least one of A, B and C", and "A , B, or C" each may include any one of the items listed together in the corresponding one of the phrases, or all possible combinations thereof. Terms such as “first”, “second”, or “first” or “second” may simply be used to distinguish an element from other such elements, and may refer elements to other aspects (e.g., importance or order) is not limited. It is said that one (eg, first) component is "coupled" or "connected" to another (eg, second) component, with or without the terms "functionally" or "communicatively". When referenced, it means that one component can be connected to the other component directly (eg by wire), wirelessly, or through a third component.

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

Various embodiments of the present document include one or more instructions stored in a storage medium (eg, the internal memory 136 or the external memory 138) readable by a machine (eg, the electronic device 101). may be implemented as software (eg, the program 140) including For example, the processor (eg, the processor 120 ) of the device (eg, the electronic device 101 ) may call at least one of one or more instructions stored from a storage medium and execute it. This makes it possible for the device to be operated to perform at least one function according to the called at least one command. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The device-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' only means that the storage medium is a tangible device and does not contain a signal (eg, electromagnetic wave), and this term refers to the case where data is semi-permanently stored in the storage medium and It does not distinguish between temporary storage cases.

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

According to various embodiments, each component (eg, module or program) of the above-described components may include a singular or a plurality of entities, and some of the plurality of entities may be separately disposed in other components. have. According to various embodiments, 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. Alternatively or additionally, a plurality of components (eg, a module or a program) may be integrated into one component. In this case, the integrated component may perform one or more functions of each component of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. . According to various embodiments, operations performed by a module, program, or other component are executed sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations are executed in a different order, or omitted. , or one or more other operations may be added.

Claims (20)

In an electronic device,
at least one processor coupled to the first SIM and the second SIM; and
at least one RF device used for communication based on the first SIM and communication based on the second SIM;
The at least one processor comprises:
while the use of the at least one RF device is assigned to the first SIM:
Obtain at least one piece of information about the first cell corresponding to 5G communication,
access the first cell based on the at least one information about the first cell;
configured to store the at least one information about the first cell,
while the use of the at least one RF device is changed and assigned from the first SIM to the second SIM:
In a state in which access to a second cell corresponding to LTE communication, the at least one piece of information about the first cell to which the electronic device is connected based on the first SIM is retrieved based on an event confirmation for which cell selection is required read out,
An electronic device configured to transmit a PRACH preamble message to the first cell when the strength of a signal from the first cell measured using the at least one piece of information on the first cell satisfies a specified condition. The method of claim 1,
the at least one processor, as at least part of an operation of reading the at least one information on the first cell to which the electronic device is accessing, based on the first SIM, based on the event confirmation,
The electronic device is configured to read the at least one piece of information about the first cell to which the electronic device is accessing based on a first SIM based on confirming reception of the RRC release message from the second cell as the event. 3. The method of claim 2,
The at least one processor is an electronic device further configured to search for a cell supporting 5G communication included in the redirection information included in the RRC release message when the strength of the signal from the first cell does not satisfy a specified condition . 3. The method of claim 2,
When the at least one processor does not satisfy a condition in which the strength of the signal from the first cell does not satisfy a specified condition, and the redirection information included in the RRC release message does not include information related to a cell supporting 5G communication, the An electronic device further configured to search for a cell supporting 5G SA based on the SIB 24 received from the first cell. The method of claim 1,
the at least one processor, as at least part of an operation of reading the at least one information on the first cell to which the electronic device is accessing, based on the first SIM, based on the event confirmation,
The electronic device is configured to read the at least one piece of information about the first cell to which the electronic device is accessing based on the first SIM based on detecting the cause of the RLF in the state connected to the second cell. 6. The method of claim 5,
wherein the at least one processor reads the at least one piece of information about the first cell to which the electronic device is accessing based on a first SIM based on detecting the cause of the RLF in a state connected to the second cell as at least part of the action,
If the electronic device does not perform an IMS-based call before the detection of the RLF cause, the electronic device is connected to the first cell based on the first SIM based on the detection of the RLF cause. An electronic device configured to read at least one piece of information. The method of claim 1,
The at least one processor is configured to, when the strength of the signal from the first cell measured using the at least one piece of information on the first cell satisfies the specified condition, the PRACH preamble for the first cell As at least part of the operation of sending the message,
When the strength of the signal from the first cell satisfies the specified condition, and the cell identification information confirmed as a result of decoding the signal is the same as the cell identification information of the at least one piece of information for the read first cell, the first cell An electronic device configured to transmit the PRACH preamble message to one cell. The method of claim 1,
the at least one processor,
while the use of the at least one RF device is changed and assigned from the first SIM to the second SIM, the signal from the first cell at a frequency included in the at least one information for the first cell An electronic device further configured to attempt detection and/or decoding for The method of claim 1,
the at least one processor,
The electronic device further configured to check the PRACH transmission power corresponding to the PRACH preamble message from the read at least one piece of information on the first cell. The method of claim 1,
the at least one processor,
check the first path loss of the PRACH corresponding to the PRACH preamble message based on the measurement result of the signal from the first cell;
check the second path loss of the PRACH from the read at least one piece of information on the first cell,
selecting one path loss based on a comparison result of the first path loss and the second path loss;
The electronic device is further configured to determine a PRACH transmission power corresponding to the PRACH preamble message by using the selected path loss. A method of operating an electronic device, comprising at least one RF device supporting a first SIM and a second SIM and used for communication based on the first SIM and communication based on the second SIM,
while the use of the at least one RF device is assigned to the first SIM:
obtaining at least one piece of information about a first cell corresponding to 5G communication;
accessing the first cell based on the at least one information about the first cell; and
storing the at least one piece of information about the first cell;
The method of operating the electronic device comprises:
while the use of the at least one RF device is changed and assigned from the first SIM to the second SIM:
In a state in which access to a second cell corresponding to LTE communication, the at least one piece of information about the first cell to which the electronic device is connected based on the first SIM is retrieved based on an event confirmation for which cell selection is required reading, and
Transmitting a PRACH preamble message to the first cell when the strength of the signal from the first cell measured using the at least one piece of information on the first cell satisfies a specified condition
A method of operating an electronic device comprising a. 12. The method of claim 11,
Reading the at least one piece of information about the first cell to which the electronic device is accessing based on the first SIM based on the event confirmation includes:
Operation of the electronic device to read the at least one piece of information about the first cell to which the electronic device is accessing based on the first SIM based on confirming the reception of the RRC release message from the second cell as the event Way. 13. The method of claim 12,
Searching for a cell supporting 5G communication included in the redirection information included in the RRC release message when the strength of the signal from the first cell does not satisfy a specified condition
The method of operating an electronic device further comprising a. 13. The method of claim 12,
When the strength of the signal from the first cell does not satisfy a specified condition and the redirection information included in the RRC release message does not include information related to a cell supporting 5G communication, the SIB received from the first cell Based on 24, the operation of searching for a cell supporting 5G SA
The method of operating an electronic device further comprising a. 12. The method of claim 11,
Reading the at least one piece of information about the first cell to which the electronic device is accessing based on the first SIM based on the event confirmation includes:
An operating method of an electronic device that reads the at least one piece of information about the first cell to which the electronic device is accessing based on the first SIM, based on detecting a cause of the RLF while connected to the second cell. 16. The method of claim 15,
The operation of reading the at least one piece of information about the first cell to which the electronic device is accessing based on the first SIM based on detecting the cause of the RLF in the state connected to the second cell includes:
If the electronic device does not perform an IMS-based call before the detection of the RLF cause, the electronic device is connected to the first cell based on the first SIM based on the detection of the RLF cause. An operating method of an electronic device for reading at least one piece of information. 12. The method of claim 11,
When the strength of the signal from the first cell measured using the at least one piece of information on the first cell satisfies the specified condition, transmitting the PRACH preamble message to the first cell includes:
When the strength of the signal from the first cell satisfies the specified condition, and the cell identification information confirmed as a result of decoding the signal is the same as the cell identification information of the at least one piece of information for the read first cell, the first cell An operating method of an electronic device for transmitting the PRACH preamble message to one cell. 12. The method of claim 11,
while the use of the at least one RF device is changed and assigned from the first SIM to the second SIM, the signal from the first cell at a frequency included in the at least one information for the first cell Attempts to detect and/or decode
The method of operating an electronic device further comprising a. 12. The method of claim 11,
Checking the PRACH transmission power corresponding to the PRACH preamble message from the read at least one piece of information on the first cell
The method of operating an electronic device further comprising a. 12. The method of claim 11,
checking a first path loss of a PRACH corresponding to the PRACH preamble message based on a measurement result of the signal from the first cell;
checking the second path loss of the PRACH from the read at least one piece of information on the first cell;
selecting one path loss based on a comparison result of the first path loss and the second path loss; and
Determining PRACH transmission power corresponding to the PRACH preamble message by using the selected path loss
The method of operating an electronic device further comprising a.

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