KR20240043026A - Electronic device for controlling transmission path and reception path and operating method thereof - Google Patents

Abstract

According to one embodiment, the electronic device 101 includes a plurality of radio frequency front ends (RFFE) (411; 413; 415; 417; 419; 421; 423; 425), the plurality of RFFEs a radio frequency (RF) circuit 520 including a plurality of antennas connected thereto, and at least one communication processor 120; 212; 214; 260; 510 operatively connected to the RF circuit. It can be included. According to one embodiment, the at least one communication processor includes a first subscriber identity module (SIM) 111 used to connect to the first communication network 111a and a second communication network 112a. It can be connected to the second SIM 112 used to access. According to one embodiment, the at least one communication processor controls the RF circuit to receive a call signal from the second communication network in a radio resource control (RRC) idle (RRC_IDLE) state. It can be configured to do so. According to one embodiment, the at least one communication processor may be further configured to determine whether the calling signal is a calling signal for a voice call. According to one embodiment, the at least one communication processor satisfies a first condition among a plurality of RF paths supportable by the electronic device, based on the fact that the calling signal is a calling signal for the voice call. The device may be further configured to select at least one RF path associated with the second SIM. According to one embodiment, the at least one communication processor may be further configured to control the RF circuit to perform a random access procedure to the second communication network through the selected at least one RF path. there is.
Other embodiments are possible.

Description

Electronic device for controlling a transmission path and a reception path and its operating method {ELECTRONIC DEVICE FOR CONTROLLING TRANSMISSION PATH AND RECEPTION PATH AND OPERATING METHOD THEREOF}

This disclosure relates to an electronic device that controls a transmission path and a reception path and a method of operating the same.

Electronic devices (e.g., user equipment (UE)) can connect to a wireless communication system and use communication services (e.g., voice communication services and/or data communication services) at a given location or while moving. In order to provide a communication service to an electronic device, an authentication operation for the electronic device may be required.

A universal integrated circuit card (UICC) is inserted or included in the electronic device, and a universal subscriber identity module (USIM) installed inside the UICC allows the electronic device and a telecommunication carrier (e.g. mobile carrier) to Authentication operations may be performed between servers of a network operator (mobile network operator: MNO). UICC may be referred to as a “subscriber identity module (SIM) card” for the global system for mobile communications (GSM) and wideband code division multiple access (WCDMA). ), long term evolution (LTE), and/or new radio (NR) may be referred to as a “USIM card”. The UICC may be a removable rSIM (e.g., SIM card) and/or an embedded subscriber identity module (eSIM), and there is no limitation in type.

An electronic device may support two or more SIMs, and an electronic device supporting two SIMs may be referred to as a “dual SIM electronic device,” and an electronic device supporting multiple SIMs may be referred to as a “multi-SIM” electronic device. It may be referred to as a “(multi) SIM electronic device”. A dual SIM electronic device or a multi-SIM electronic device may support multiple SIMs, each of which may be associated with unique subscription information.

An electronic device in which one transceiver transmits and receives signals associated with two SIMs may be referred to as a “dual SIM dual standby (DSDS) electronic device.” In a DSDS electronic device, when one of two SIMs transmits and/or receives a signal, the other SIM may exist in a standby state. Alternatively, an electronic device capable of operating two SIMs in an active state simultaneously through a plurality of transceivers may be referred to as a “dual SIM dual active (DSDA) electronic device.”

The electronic device may include two SIMs (eg, SIM1 and SIM2) and operate in DSDA mode. SIM1 may be a SIM for connecting to a first communication network, and SIM2 may be a SIM for connecting to a second communication network. A service provided through a first communication network may be a first service, and a service provided through a second communication network may be a second service. An electronic device may include multiple antennas and may use multiple radio frequency (RF) paths. Each of the plurality of antennas may correspond to at least one RF path.

The radio resource control (RRC) state of the electronic device in the first communication network is RRC connected (RRC_CONNECTED), and the RRC state of the electronic device in the second communication network is RRC idle (RRC_IDLE). ) may be in the state. Accordingly, among the plurality of RF paths included in the electronic device, RF paths related to the first communication network (e.g., related to SIM1) are used, and the RF paths related to SIM1 are one transmission path (Tx). path) and four reception paths (Rx path). Hereinafter, for convenience of explanation, the RF path related to SIM1 will be referred to as the “SIM1 RF path,” the transmission path related to SIM1 will be referred to as the “SIM1 transmission path,” and the reception path related to SIM1 will be referred to as the “SIM1 reception path.” The RF path related to SIM2 will be referred to as “SIM2 RF path”, the transmission path related to SIM2 will be referred to as “SIM2 transmission path”, and the reception path related to SIM2 will be referred to as “SIM2 reception path”. As the electronic device determines that a call from a second communications network exists, RF paths associated with the second communications network (e.g., associated with SIM2) may be used, with the SIM2 RF paths being one SIM2 transmit path and two SIM2 transmit paths. It may include SIM2 receive paths.

When the electronic device confirms that a call targeting the electronic device exists from the second communication network in the RRC_IDLE state, selects one of the remaining RF paths excluding the SIM1 RF paths among the plurality of RF paths as the SIM2 transmission path, and , a random access operation can be performed on the second communication network providing the second service through the selected SIM2 transmission path. For example, if the SIM1 transmit path is a transmit path that connects to a transmit antenna placed on the lower side of the electronic device, one of the RF paths other than the SIM1 transmit path (e.g., the upper side of the electronic device) ) can be selected as the SIM2 transmission path. The performance of the transmission path connected to the transmission antenna located at the bottom of the electronic device may be superior to the performance of the remaining transmission paths (e.g., the transmission path connected to the transmission antenna located at the top of the electronic device).

In addition, since there are four SIM1 reception paths, one SIM1 transmission path among the RF paths of the electronic device and two RF paths among the remaining RF paths excluding the four SIM1 reception paths can be selected as SIM2 reception paths. . The SIM2 transmit path can also be used as a SIM2 receive path, and the two SIM2 receive paths may have a high probability of being receive paths with performance below the threshold performance. Additionally, when there are insufficient reception paths, only one RF path can be selected as the SIM2 reception path.

As such, when there is a call targeting the electronic device from the second communication network in the RRC_IDLE state, the RF paths (e.g., SIM2 RF paths) used by the electronic device may have performance below the threshold performance, resulting in This may increase the probability that the random access procedure will fail. In particular, when the call from the second communication network is a call for a voice service, if the random access procedure fails, the electronic device may not receive the voice call. Additionally, even if the electronic device succeeds in the random access procedure to the second communication network and can operate in the RRC_CONNECTED state with respect to the second communication network, the RF paths (e.g., SIM2 RF paths) used by the electronic device are still The performance may be below the critical performance, which may result in a high probability of situations that may cause service quality degradation, such as call drop and/or mute.

According to an embodiment of the present disclosure, the electronic device 101 includes a plurality of radio frequency front ends (RFFE) (411; 413; 415; 417; 419; 421; 423; 425). A radio frequency (RF) circuit 520 comprising a plurality of antennas coupled to a plurality of RFFEs, and at least one communications processor 120; 212; 214; 260; 510) may be included.

According to one embodiment of the present disclosure, the at least one communication processor includes a first subscriber identity module (SIM) 111 used to connect to the first communication network 111a and a second communication network. It may be connected to a second SIM 112 used to access 112a.

According to an embodiment of the present disclosure, the at least one communication processor is configured to use the RF to receive a call signal from the second communication network in a radio resource control (RRC) idle (RRC_IDLE) state. It can be configured to control a circuit.

According to an embodiment of the present disclosure, the at least one communication processor may be further configured to check whether the calling signal is a calling signal for a voice call.

According to an embodiment of the present disclosure, the at least one communication processor satisfies the first condition among a plurality of RF paths supportable by the electronic device based on the fact that the call signal is a call signal for the voice call. and may be further configured to select at least one RF path associated with the second SIM.

According to one embodiment of the present disclosure, the at least one communication processor is further configured to control the RF circuit to perform a random access procedure to the second communication network through the selected at least one RF path. It can be configured.

According to an embodiment of the present disclosure, a method of operating the electronic device 101 includes receiving a call signal from a second communication network in a radio resource control (RRC) idle (RRC_IDLE) state. It may include (511).

According to an embodiment of the present disclosure, the operating method may further include an operation 513 of checking whether the calling signal is a calling signal for a voice call.

According to an embodiment of the present disclosure, the operating method includes, based on the fact that the calling signal is a calling signal for the voice call, a first among a plurality of radio frequency (RF) paths supportable by the electronic device. It may further include an operation 517 of selecting at least one RF path associated with a second subscriber identity module (SIM) 112 that satisfies condition 1.

According to an embodiment of the present disclosure, the operating method may further include an operation 519 of performing a random access procedure for the second communication network through the selected at least one RF path. there is.

According to one embodiment of the present disclosure, the second SIM may be used to connect to the second communication network 112a, and the first SIM may be used to connect to the first communication network 111a.

According to one embodiment of the present disclosure, the non-transitory computer readable storage medium is executed by at least one processor (120; 212; 214; 260; 510) of an electronic device 101, wherein the electronic device includes: It may include one or more programs including instructions configured to receive a call signal from a second communication network in a radio resource control (RRC) idle (RRC_IDLE) state.

According to an embodiment of the present disclosure, the instructions may be further configured so that the electronic device checks whether the calling signal is a calling signal for a voice call.

According to an embodiment of the present disclosure, the instructions are, the electronic device, based on the fact that the existing calling signal is a calling signal for the voice call, a plurality of radio frequencies (radio frequency (RF)) that can be supported by the electronic device. The method may further be configured to select at least one RF path associated with a second subscriber identity module (SIM) 112 that satisfies a first condition among the paths.

According to an embodiment of the present disclosure, the instructions may be further configured to cause the electronic device to perform a random access procedure for the second communication network through the selected at least one RF path. .

According to one embodiment of the present disclosure, the second SIM may be used to connect to the second communication network 112a, and the first SIM may be used to connect to the first communication network 111a.

FIG. 1A is a block diagram schematically showing an electronic device in a network environment according to an embodiment.
FIG. 1B is a diagram illustrating a network environment including an electronic device, according to an embodiment.
FIG. 1C is a block diagram schematically showing an example of the internal structure of an electronic device according to an embodiment.
FIG. 2A is a block diagram of an electronic device for supporting legacy network communication and ^5th generation (5G) network communication, according to an embodiment.
FIG. 2B is a block diagram of an electronic device for supporting legacy network communication and 5G network communication, according to an embodiment.
FIG. 3A is a diagram illustrating a wireless communication system providing a network for legacy communication and/or 5G communication according to an embodiment.
FIG. 3B is a diagram illustrating a wireless communication system providing a network for legacy communication and/or 5G communication according to an embodiment.
FIG. 3C is a diagram illustrating a wireless communication system providing a network for legacy communication and/or 5G communication according to an embodiment.
Figure 4 is a block diagram showing an RF circuit according to one embodiment.
FIG. 5A is a flowchart illustrating a method of operating an electronic device, according to an embodiment.
FIG. 5B is a flowchart illustrating a method of operating an electronic device, according to an embodiment.
Figure 6 is a flowchart illustrating a method of operating an electronic device, according to an embodiment.
FIG. 7 is a diagram illustrating an operation of selecting an RF path for a voice call in an RF circuit according to an embodiment.
FIG. 8 is a diagram illustrating an operation of selecting an RF path for a voice call in an RF circuit according to an embodiment.
FIG. 9 is a diagram illustrating an operation of selecting an RF path for a voice call in an RF circuit according to an embodiment.
FIG. 10 is a diagram illustrating an operation of selecting an RF path for a voice call in an RF circuit according to an embodiment.
FIG. 11 is a diagram for explaining an operation of performing a random access procedure, according to an embodiment.
FIG. 12 is a diagram for explaining an operation of performing a random access procedure, according to an embodiment.
FIG. 13 is a diagram for explaining an operation of performing a random access procedure, according to an embodiment.
FIG. 14 is a diagram for explaining an operation of performing a random access procedure, according to an embodiment.
FIG. 15 is a diagram for explaining an operation of performing a random access procedure, according to an embodiment.
FIG. 16A is a diagram for explaining a transmission sharing (Tx sharing) operation according to an embodiment.
Figure 16b is a diagram for explaining a Tx sharing operation according to an embodiment.
Figure 17 is a diagram for explaining a Tx sharing operation according to an embodiment.
FIG. 18 is a diagram for explaining an operation of selecting an RF path related to a call signal indicating a voice call, according to an embodiment.
FIG. 19 is a diagram for explaining an operation of selecting an RF path related to a call signal indicating a voice call, according to an embodiment.
FIG. 20 is a diagram for explaining an operation of selecting an RF path related to a call signal indicating a voice call, according to an embodiment.
FIG. 21 is a diagram for explaining an operation of selecting an RF path related to a call signal indicating a voice call, according to an embodiment.
FIG. 22 is a diagram illustrating an operation of selecting an RF path for a voice call in an RF circuit according to an embodiment.
FIG. 23 is a diagram for explaining an operation of selecting an RF path for a voice call in an RF circuit according to an embodiment.
FIG. 24 is a diagram illustrating an operation of selecting an RF path for a voice call in an RF circuit according to an embodiment.
FIG. 25 is a diagram illustrating an operation of selecting an RF path for a voice call in an RF circuit according to an embodiment.
FIG. 26 is a diagram illustrating an operation of selecting an RF path for a voice call in an RF circuit according to an embodiment.

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

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

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

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

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

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

Hereinafter, an embodiment of the present disclosure will be described using an electronic device as an example. The electronic device may include a terminal, a mobile station, mobile equipment (ME), or user equipment. It may be referred to as equipment: UE), user terminal (UT), subscriber station (SS), wireless device, handheld device, or access terminal (AT). . Alternatively, in one embodiment of the present disclosure, the electronic device has a communication function, such as a mobile phone, a personal digital assistant (PDA), a smart phone, a wireless modem, or a laptop. It can be a device.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

An electronic device according to an embodiment disclosed in this document may be of various types. Electronic devices may include, for example, portable communication devices (e.g., smartphones), computer devices, portable multimedia devices, portable medical devices, cameras, wearable devices, or home appliances. Electronic devices according to embodiments of this document are not limited to the above-described devices.

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

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

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

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

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

FIG. 1B is a diagram illustrating a network environment including an electronic device, according to an embodiment.

Referring to FIG. 1B, the network according to one embodiment includes an electronic device 101 (e.g., the electronic device 101 of FIG. 1A), a first communication network 111a, and/or a second communication network 112a. It can be included.

According to one embodiment, the electronic device 101 may be a multi-SIM (multi-SIM) electronic device that supports a plurality of SIMs. If the electronic device 101 supports two SIMs, the electronic device 101 may be a dual SIM dual standby (DSDS) electronic device or a dual SIM dual active (DSDA) electronic device. there is. The electronic device 101 may include two SIMs (eg, a first SIM 111 and a second SIM 112). There are no restrictions on the types of each of the first SIM 111 and the second SIM 112. For example, each of the first SIM 111 and the second SIM 112 may be a removable SIM (rSIM) (eg, a SIM card). The electronic device 101 may include a first slot (not shown) and a second slot (not shown) to accommodate the first SIM 111 and the second SIM 112, respectively. In this case, the fact that the electronic device 101 includes the first SIM 111 and the second SIM 112 means that the first SIM 111 and the second SIM 112 are mounted on the electronic device 101. Those skilled in the art will understand that this may mean a state in which the first SIM 111 and the second SIM 112 are included in the electronic device 101. For another example, at least one of the first SIM 111 and the second SIM 112 may include an embedded subscriber identity module (eSIM). eSIM may also be referred to as an embedded universal integrated circuit card (UICC) (eUICC).

According to one embodiment, the first SIM 111 is a SIM subscribed to a communication service provider of the first communication network 111a, and the electronic device 101 uses the first SIM 111 to operate the first communication network 111a. ) and can receive wireless communication services from the first communication network 111a.

According to one embodiment, the second SIM 112 is a SIM subscribed to a communication service provider of the second communication network 112a, and the electronic device 101 uses the second SIM 112 to connect the second communication network 112a. ) and can receive wireless communication services from the second communication network 112a.

According to one embodiment, although not separately shown in FIG. 1B, the first SIM 111 and the second SIM 112 may be SIMs subscribed to a communication service provider of the same communication network. For example, each of the first SIM 111 and the second SIM 112 may be a SIM corresponding to different subscriber information subscribed to the same communication service provider.

FIG. 1C is a block diagram schematically showing an example of the internal structure of an electronic device according to an embodiment.

Referring to FIG. 1C, the electronic device 101 (e.g., the electronic device 101 in FIG. 1A or 1B) includes a processor 120 (e.g., the processor 120 in FIG. 1A, the main processor 121 in FIG. 1A). ), communication processor 510 (e.g., auxiliary processor 123 in Figure 1A), radio frequency (RF) circuit 520, at least one of the first SIM 111 or the second SIM 112 It can be included. At least one of the first SIM 111 or the second SIM 112 may be a removable SIM (removable SIM: rSIM). In this case, the electronic device 101 may further include at least one slot for connection to the rSIM. In one embodiment, the rSIM is removable from the electronic device 101 and is not necessarily included in the electronic device 101. At least one of the first SIM 111 or the second SIM 112 may be an embedded subscriber identity module (eSIM). rSIM may be referred to as “physical SIM (pSIM).”

According to one embodiment, communication processor 510 may support a specified number (eg, two) of SIMs. Although not shown in FIG. 1C, the electronic device 101 may include more than a specified number of SIMs (eg, two rSIMs and one eSIM). In this case, the electronic device 101 may further include a switch (not shown in FIG. 1C) for switching SIM connections between the plurality of SIMs and the communication processor 510.

According to one embodiment, the communication processor 510 may support establishment of a communication channel in a band to be used for wireless communication and network communication through the established communication channel. For example, the communication processor 310 may be used for ^2nd generation (2G) network communication, ^3rd generation (3G) network communication, ^4th generation (4G) network communication, or 5th generation network communication. (5 ^th generation: 5G) Can support at least one of network communications.

The RF circuit 520 is at least one of a radio frequency integrated circuit (RFIC), a radio frequency front end (RFFE) module, or an antenna module (e.g., the antenna module 197 in FIG. 1A). It can contain one. The RF circuit 520 may convert data (eg, a baseband signal) output from the communication processor 510 into an RF signal and transmit the RF signal through an antenna module. The RF circuit 520 may convert the RF signal received through the antenna module into a baseband signal and transmit the baseband signal to the communication processor 510. The RF circuit 520 can process an RF signal or a baseband signal based on a communication method supported by the communication processor 510, and there is no limitation on the type of the RF circuit 520. According to one embodiment, the interface between components may be a general purpose input/output (GPIO), universal asynchronous receiver/transmitter (UART) (e.g., high speed-UART (HS-UART)), or peripheral component interconnect bus express (PCIe). ) It can be implemented as an interface, and there are no restrictions on the interface between components. Alternatively, at least some of the components may exchange control information or packet data information using shared memory.

FIG. 1C shows a case where the processor 120 and the communication processor 510 are implemented as separate hardware, but this is merely an example. Not only may the processor 120 and the communication processor 510 be implemented as separate hardware, but the processor 120 and the communication processor 510 may also be implemented on a single chip.

The communication processor 510 may obtain stored information from the first SIM 111 and the second SIM 112. For example, the information stored may include integrated circuit card identifier (ICCID), IMSI, home public land mobile network (HPLMN) related information, or mobile subscriber international ISDN number (MSISIDN). ) may include at least one of The stored information may be referred to as an elementary file (EF). The communication processor 510 performs network communication corresponding to the first SIM 111 and/or the second SIM 112 based on the information stored in the acquired first SIM 111 and/or the second SIM 112. The authentication procedure for this can be performed through the RF circuit 520. If authentication is successful, the communication processor 510 may perform network communication corresponding to the first SIM 111 and/or the second SIM 112 through the RF circuit 520.

According to one embodiment, the communication processor 510 may perform dual SIM network communications according to the first SIM 111 or the second SIM 112. Depending on the implementation of the RF circuit 520, the dual SIM's network communications may be performed in either DSDS mode or DSDA mode.

According to one embodiment, the communication processor 510 may include two stacks (e.g., a stack according to ISO7816) for processing SIM, and includes a first SIM 111 and a second SIM 112. ) can be connected to two stacks. For example, a first slot may be connected to one stack, and a second slot may be connected to another stack.

FIG. 2A is a block diagram 200 of an electronic device for supporting legacy network communication and ^5th generation (5G) network communication, according to an embodiment.

Referring to FIG. 2A, the electronic device 101 (e.g., the electronic device 101 of FIG. 1A, 1B, or 1C) includes a first communication processor 212 and a second communication processor 214. , a first radio frequency integrated circuit (RFIC) 222, a second RFIC 224, a third RFIC 226, a fourth RFIC 228, a first radio frequency front end. end: RFFE) 232, a second RFFE 234, a first antenna module 242, a second antenna module 244, a third antenna module 246, and/or antennas 248. You can. 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.

In one embodiment, the electronic device 101 may further include at least one of the components shown in FIG. 1A, and the second network 199 may further include at least one other network. You can. According to one embodiment, the first communication processor 212, the second communication processor 214, the first RFIC 222, the second RFIC 224, the fourth RFIC 228, the first RFFE 232, and/or second RFFE 234 may form at least a portion of wireless communication module 192 . In one embodiment, the fourth RFIC 228 may be omitted or may be included as part of the third RFIC 226.

The first communication processor 212 may support establishment of a communication channel in a band to be used for wireless communication with the first cellular network 292, and legacy network communication through the established communication channel. In one embodiment, the first cellular network is a ^2nd generation (2G) network, a ^3rd generation (3G) network, and/or a ^4th generation (4G) network (e.g., long-term It may be a legacy network including an evolution (long-term evolution (LTE)) network. The second communication processor 214 establishes a communication channel corresponding to a designated band (e.g., about 6 GHz to about 60 GHz) among the bands to be used for wireless communication with the second cellular network 294, and establishes a 5G network through the established communication channel. Can support communication. In one embodiment, the second cellular network 294 may be a 5G network (eg, new radio (NR) network) defined by 3GPP. According to one embodiment, the first communication processor 212 or the second communication processor 214 performs communication corresponding to another designated band (e.g., about 6 GHz or less) among the bands to be used for wireless communication with the second cellular network 294. It can support the establishment of a channel and 5G network communication through the established communication channel.

The first communication processor 212 can transmit and receive data with the second communication processor 214. For example, data that was classified as being transmitted over the second cellular network 294 may be changed to being 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 exchange data with the second communication processor 214 through the inter-processor interface 213. For example, the interprocessor interface 213 may be a universal asynchronous receiver/transmitter (UART) interface (e.g., a high speed-UART (HS-UART) interface or a peripheral component interconnect bus express (PCIe)) interface. It can be implemented as a , but there is no limit to its type. For example, the first communication processor 212 and the second communication processor 214 may exchange control information and packet data information using shared memory. The first communication processor 212 may transmit and receive various information such as sensing information, information on output intensity, and/or resource block (RB) allocation information with the second communication processor 214.

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 exchange data with 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 can transmit and receive data with the processor 120 through an HS-UART interface or a PCIe interface, but there is no limitation on the type of interface. In one embodiment, the first communication processor 212 and the second communication processor 214 may exchange control information and packet data information with the processor 120 using a shared memory.

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. In one embodiment, the first communication processor 212 or the second communication processor 214 is processor 120 (e.g., main processor 121 and auxiliary processor 123 in Figure 1A, or processor 120 in Figure 1C). )), or may be formed within a single chip or single package with the wireless communication module 192 (e.g., the communication module 190 of FIG. 1A).

When transmitting, the first RFIC 222 converts the baseband signal generated by the first communications processor 212 to a frequency range from about 700 MHz to about 700 MHz as used in the first cellular network 292 (e.g., a legacy network). It can be converted to a radio frequency (RF) signal of 3GHz. Upon reception, an RF signal is obtained from a first network 292 (e.g., a legacy network) via an antenna (e.g., first antenna module 242) and transmitted via an RFFE (e.g., first RFFE 232). Can be preprocessed. The first RFIC 222 may convert the pre-processed RF signal into a baseband signal to be processed by the first communication processor 212.

When transmitting, the second RFIC 224 uses the first communications processor 212 or the baseband signal generated by the second communications processor 214 to a second cellular network 294 (e.g., a 5G network). It can be converted into an RF signal (hereinafter referred to as a 5G Sub6 RF signal) in the Sub6 band (e.g., approximately 6 GHz or less). Upon reception, the 5G Sub6 RF signal is obtained from the second cellular network 294 (e.g., 5G network) via an antenna (e.g., second antenna module 244) and RFFE (e.g., second RFFE 234) ) can be preprocessed. The second RFIC 224 may convert the preprocessed 5G Sub6 RF signal into a baseband signal so that it can be processed by a corresponding communication processor of the first communication processor 212 or the second communication processor 214.

The third RFIC 226 transmits the baseband signal generated by the second communications processor 214 to a 5G Above6 band (e.g., about 6 GHz) to be used in the second cellular network 294 (e.g., a 5G network). ~ about 60 GHz) can be converted to an RF signal (hereinafter referred to as 5G Above6 RF signal). Upon reception, the 5G Above6 RF signal may be obtained from a second cellular network 294 (e.g., a 5G network) via an antenna (e.g., antenna 248) and preprocessed via a third RFFE 236. The third RFIC 226 may convert the pre-processed 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.

In one embodiment, the electronic device 101 may include a fourth RFIC 228 separately from the third RFIC 226 or at least as part of it. In this case, the fourth RFIC 228 converts the baseband signal generated by the second communication processor 214 into an RF signal (hereinafter referred to as IF) in the intermediate frequency (IF) band (e.g., about 9 GHz to about 11 GHz). signal), the IF signal can be transmitted to the third RFIC (226). The third RFIC 226 can convert the IF signal into a 5G Above6 RF signal. Upon reception, a 5G Above6 RF signal may be received from a second cellular network 294 (e.g., a 5G network) via an antenna (e.g., antenna 248) and converted into an IF signal by a third RFIC 226. there is. The fourth RFIC 228 may convert the IF signal into a baseband signal so that the second communication processor 214 can process it.

According to one embodiment, the first RFIC 222 and the second RFIC 224 may be implemented as a single chip or at least part of a single package. In one embodiment, when the first RFIC 222 and the second RFIC 224 in FIG. 2A are implemented as a single chip or a single package, they may be implemented as an integrated RFIC. In this case, an integrated RFIC is connected to the first RFFE (232) and the second RFFE (234) to convert the baseband signal to a signal in a band supported by the first RFFE (232) and/or the second RFFE (234) , the converted signal can be transmitted to one of the first RFFE (232) and the second RFFE (234). According to one embodiment, the first RFFE 232 and the second RFFE 234 may be implemented as at least part of a single chip or a single package. According to one embodiment, at least one antenna module of the first antenna module 242 or the second antenna module 244 may be omitted or combined with another antenna module to process RF signals of a plurality of corresponding bands.

According to one 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 wireless 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 installed in some areas (e.g., bottom) of the second substrate (e.g., sub-PCB) separate from the first substrate, and the antenna is installed in some other areas (e.g., top). 248 may be disposed to form a third antenna module 246. By placing the third RFIC 226 and the antenna 248 on the same substrate, it is possible to reduce the length of the transmission line therebetween. By reducing the length of the transmission line between the third RFIC 226 and the antenna 248, signals in the high frequency band (e.g., about 6 GHz to about 60 GHz) used for 5G network communication are lost (e.g., attenuated) by the transmission line. The amount can be reduced. Because of this, the electronic device 101 can improve the quality or speed of communication with the second network 294 (eg, 5G network).

According to one embodiment, the antenna 248 may be formed as an antenna array including a plurality of antenna elements that can be used for beamforming. In this case, the third RFIC 226 is part of the third RFFE 236 and may include a plurality of phase shifters 238 corresponding to a plurality of antenna elements. At the time of transmission, each of the plurality of phase converters 238 adjusts the phase of the 5G Above6 RF signal to be transmitted to the outside of the electronic device 101 (e.g., a base station (e.g., gNB) of a 5G network) through a corresponding antenna element. It can be converted. Upon reception, each of the plurality of phase converters 238 may convert the phase of the 5G Above6 RF signal received from the outside of the electronic device 101 through the corresponding antenna element into the same or substantially the same phase. This enables transmission or reception through beamforming between the electronic device 101 and the outside of the electronic device 101.

The second cellular network 294 (e.g., 5G network) may operate independently (e.g., stand alone (SA) structure) or be interlocked with the first cellular network 292 (e.g., legacy network). (e.g. non-stand alone (NSA) structure). For example, in a 5G network, there is only an access network (e.g. 5G radio access network (RAN) or next generation RAN (NG RAN)) and a core network (e.g. next generation core). NGC)) may not exist. In this case, the electronic device 101 accesses the access network of the 5G network and then accesses the external network (e.g., the Internet) under the control of the core network (e.g., evolved packet core (EPC)) of the legacy network. You can access it. Protocol information for communication with a legacy network (e.g., LTE protocol information) or protocol information for communication with a 5G network (e.g., NR protocol information) is stored in the memory 230, and other components (e.g., processor 120 ), the first communication processor 212, or the second communication processor 214).

FIG. 2B is a block diagram 250 of an electronic device for supporting legacy network communication and 5G network communication, according to an embodiment.

Referring to FIG. 2B, the electronic device 101 (e.g., the electronic device 101 in FIG. 1A, 1B, or 1C) includes an integrated communications processor 260 (e.g., the communications processor 510 in FIG. 1C), First RFIC (222), second RFIC (224), third RFIC (226), fourth RFIC (228), first RFFE (232), second RFFE (234), first antenna module 242, It may include a second antenna module 244, a third antenna module 246, and/or antennas 248. 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.

Compared to the block diagram 200 of the electronic device 101 shown in FIG. 2A, the block diagram 250 of the electronic device 101 shown in FIG. 2B includes a first communication processor 212 and a second communication processor. The only difference is that 214 is implemented with the integrated communications processor 260, and the remaining components included in the block diagram 250 of the electronic device 101 are the block diagram of the electronic device 101 shown in FIG. 2A. It may be similar to or substantially identical to the components included in 200, and therefore detailed description thereof will be omitted.

FIG. 3A is a diagram illustrating a wireless communication system providing a network for legacy communication and/or 5G communication according to an embodiment.

Referring to FIG. 3A, the network environment 300a may include at least one of a legacy network and a 5G network. In one embodiment, the legacy network is 4G or LTE of the 3GPP standard that supports wireless connectivity with electronic device 101 (e.g., electronic device 101 of FIGS. 1A, 1B, 1C, 2A, or 2B). It may include a base station (e.g., eNodeB) and an EPC that manages 4G communications. The 5G network may include a NR base station (e.g., gNodeB (gNB)) that supports wireless access with the electronic device 101 and a 5GC that manages 5G communication of the electronic device 101.

According to one embodiment, the electronic device 101 may transmit and receive control messages and user data through legacy communication and/or 5G communication. The control message may include a message related to at least one of security control, bearer setup, authentication, registration, or mobility management of the electronic device 101. there is. User data may refer to user data excluding control messages transmitted and received between the electronic device 101 and the core network 330 (eg, EPC 342).

The electronic device 101 may transmit and receive at least one of a control message or user data with at least a part of a 5G network (eg, an NR base station, 5GC) using at least a part of a legacy network (eg, an LTE base station, EPC).

According to one embodiment, the network environment 300a provides dual connectivity (DC) to an LTE base station and an NR base station, and connects to the electronic device 101 through the core network 330 of either EPC or 5GC. It may include a network environment for sending and receiving control messages.

According to one embodiment, in a DC environment, one of the LTE base station or the NR base station operates as a master node (MN) 310, and the other operates as a secondary node (SN) 320. You can. The MN 310 is connected to the core network 330 and can transmit and receive control messages. The MN 310 and the SN 320 are connected through a network interface and can transmit and receive messages related to wireless resource (eg, communication channel) management with each other.

According to one embodiment, the MN 310 may be configured as an LTE base station, the SN 320 may be configured as an NR base station, and the core network 330 may be configured as an EPC. For example, a control message may be transmitted and received through an LTE base station and an EPC, and user data may be transmitted and received through at least one of an LTE base station or an NR base station.

According to one embodiment, the MN 310 may include an NR base station, the SN 320 may include an LTE base station, and the core network 330 may include 5GC. For example, control messages may be transmitted and received through the NR base station and 5GC, and user data may be transmitted and received through at least one of the LTE base station or the NR base station.

FIG. 3B is a diagram illustrating a wireless communication system providing a network for legacy communication and/or 5G communication according to an embodiment.

Referring to FIG. 3B, the network environment 300b may include at least one of a legacy network and a 5G network. In one embodiment, the legacy network is 4G or LTE of the 3GPP standard that supports wireless connectivity with electronic device 101 (e.g., electronic device 101 of FIGS. 1A, 1B, 1C, 2A, or 2B). It may include a base station (e.g., eNodeB) and an EPC that manages 4G communications. The 5G network may include an NR base station 350 (e.g., gNodeB (gNB)) that supports wireless access with the electronic device 101 and a 5GC 352 that manages 5G communication of the electronic device 101.

According to one embodiment, the electronic device 101 may transmit and receive control messages and user data through legacy communication and/or 5G communication.

The 5G network may include an NR base station 350 and 5GC 352, and may transmit and receive control messages and user data independently from the electronic device 101.

FIG. 3C is a diagram illustrating a wireless communication system providing a network for legacy communication and/or 5G communication according to an embodiment.

Referring to FIG. 3C, the network environment 300c may include at least one of a legacy network and a 5G network. In one embodiment, the legacy network is 4G or LTE of the 3GPP standard that supports wireless connectivity with electronic device 101 (e.g., electronic device 101 of FIGS. 1A, 1B, 1C, 2A, or 2B). It may include a base station 340 (e.g., eNodeB) and an EPC 342 that manages 4G communications. The 5G network may include an NR base station 350 (e.g., gNodeB (gNB)) that supports wireless access with the electronic device 101 and a 5GC 352 that manages 5G communication of the electronic device 101.

According to one embodiment, the electronic device 101 may transmit and receive control messages and user data through legacy communication and/or 5G communication.

The legacy network and 5G network according to one embodiment can each independently provide data transmission and reception. For example, the electronic device 101 and the EPC 342 may transmit and receive control messages and user data through the LTE base station 340. As another example, the electronic device 101 and the 5GC 352 may transmit and receive control messages and user data through the NR base station 350.

According to one embodiment, the electronic device 101 may be registered with at least one of the EPC 342 or the 5GC 352 and transmit and receive control messages.

According to one embodiment, the EPC 342 or 5GC 352 may manage communication of the electronic device 101 by interworking. For example, movement information of the electronic device 101 may be transmitted and received through the interface between the EPC 342 and the 5GC 352.

As described above, DC through the LTE base station 340 and the NR base station 350 may be referred to as EN-DC (E-UTRA new radio dual connectivity).

Figure 4 is a block diagram showing an RF circuit according to one embodiment.

Referring to FIG. 4, an RF circuit (e.g., RF circuit 520 in FIG. 1C) includes a transceiver 400 and a plurality of low noise amplifiers (LNA)/front-end module. : FEM (LFEM) (411, 415, 419, 425), a plurality of power amplifier with integrated low noise amplifier and duplexers (LPAMID) (413, 417, 421, 423), and/or a plurality of antennas ( Example: Antenna 1 to antenna 9) may be included. In one embodiment, each of LFEMs 411, 415, 419, 425 and LPAMIDs 413, 417, 421, 423 may be an RFFE.

According to one embodiment, the first LFEM 411, the first LPAMID 413, the second LFEM 415, the second LPAMID 417, and/or the third LFEM 419 are electronic devices (e.g., 1, antennas (e.g., antennas 5 to 9) disposed on the upper side of the electronic device 101 of FIGS. 2A, 2B, 3A, 3B, 3C, 4, or 5) ), and the third LPAMID (421), fourth LPAMID (423), and/or fourth LFEM (425) are antennas (e.g., antennas 1 to 1) disposed on the lower side of the electronic device. Can be connected to antenna 4).

According to one embodiment, antenna 1 may be a low band (LB)/middle band (MB) transmission antenna, and antenna 2 may be a high band (HB) transmission antenna, and the antenna Antenna 3 may be a MB multiple-input multiple-output (MIMO)/ultra high band (UHB) antenna, and antenna 4 may be an HB MIMO/UHB antenna. In one embodiment, “MIMO antenna” may refer to an antenna other than the default antenna. In one embodiment, the default antenna may be an antenna used in the SA method when the electronic device operates in the SA method (for example, when the electronic device uses two reception paths), and may be an antenna used in the SA method, and may be used in a plurality of antennas included in the electronic device. Among the antennas, an antenna whose performance of corresponding RF paths is greater than or equal to a threshold performance (eg, has maximum performance) may be set as the default antenna. For example, if there are M antennas whose performance of the corresponding RF paths is higher than the threshold performance, and the number of default antennas is N, among the M antennas, the N antennas are the default antennas in the order of the best performance of the RF path. It can be set to . M can be greater than or equal to N. Compared to a default antenna, a MIMO antenna may have a larger path loss of the corresponding RF path and may have poorer performance. Performance will be explained below, so its detailed description will be omitted here.

According to one embodiment, antenna 5 may be a LB/MB/HB antenna, antenna 6 may be a MB MIMO transmit/HB MIMO transmit antenna, antenna 7 may be a UHB MIMO antenna, and antenna 8 may be a UHB transmit antenna. It may be, and antenna 9 may be a MB MIMO/HB MIMO antenna. According to one embodiment, each of the transmitting antennas Antenna 1, Antenna 2, Antenna 6, and/or Antenna 8 may also be used as a receiving antenna.

According to one embodiment, for MB/HB, LPAMIDs exist on both the lower side and upper side, and the performance of the RF path (e.g., transmission path) corresponding to the LPAMIDs 421 and 423 placed on the lower side is The performance may be superior to that of the RF path (e.g., transmission path) corresponding to the LPAMIDs 413 and 417 placed on the upper side. In this way, the reason why the performance of the transmission path corresponding to the LPAMIDs (421, 423) arranged on the lower side is better than the performance of the transmission path corresponding to the LPAMIDs (413, 417) arranged on the upper side is that the grip sensor on the lower side This may be because a (grip sensor) exists. For example, when a grip sensor is present on the lower side, the specific absorption rate (SAR) margin is large in free space, and the loss inside LPAMID and/or connected to LPAMID is large. This may be because antenna loss at the transmit antenna may be small. In one embodiment, the SAR margin is the threshold for changing the RF path minus the accumulated SAR value occurring in the RF paths, and the back-off corresponding to the RF signal for which the RF path is maintained is performed with a delay. Alternatively, it may be set to not be performed delayedly, but may not be limited to either one.

According to one embodiment, for UHB (e.g., N77, N78, N79, B48), there may be a transmission path corresponding to the second LPAMID 417 located on the upper side.

According to one embodiment, the performance of the RF path may include performance of the transmit path and performance of the receive path.

Performance for the transmission path may be determined based on at least one of average power limit, antenna loss, and/or internal path loss. For example, for a corresponding transmission path, if the internal path loss is small, the maximum transmission power applied to the transmission path can be increased, and if the antenna loss is low, the total radiation power (TRP) can be increased. there is.

Performance for the receive path may be determined based on at least one of internal path loss and/or antenna loss. For example, if the internal path loss is small and the antenna loss is low for the corresponding reception path, the sensitivity for the corresponding reception path may increase. As the sensitivity of the receiving path increases, the received signal strength of the received signal may also increase. In one embodiment, the received signal strength is determined by reference signal received power (RSRP), received strength signal indicator (RSSI), reference signal received quality (RSRQ), reference signal It may include at least one of received signal code power (RSCP), signal to noise ratio (SNR), or signal to interference plus noise ratio (SINR).

According to one embodiment of the present disclosure, an electronic device (e.g., the electronic device 101 of FIGS. 1A, 1B, 1C, 2A, 2B, 3A, 3B, or 3C) uses a plurality of wireless Frequency front ends (radio frequency front end: RFFE) (e.g., the first LFEM (411), the first LPAMID (413), the second LFEM (415), the second LPAMID (417), and the third LFEM (in FIG. 7) 419), third LPAMID (421), fourth LPAMID (423), and fourth LFEM (425)), the plurality of RFFEs (e.g., first LFEM (411), first LPAMID (413) of FIG. 7 , a plurality of antennas connected to the second LFEM (415), the second LPAMID (417), the third LFEM (419), the third LPAMID (421), the fourth LPAMID (423), and the fourth LFEM (425). a radio frequency (RF) circuit 520 (e.g., RF circuit 530 in FIG. 1C), and operably connected to the RF circuit (e.g., RF circuit 530 in FIG. 1C) At least one communications processor (e.g., processor 120 in FIG. 1A, communications processor 510 in FIG. 1C, first communications processor 212 or second communications processor 214 in FIG. 2A, or integrated communications processor 214 in FIG. 2B) It may include a processor 260).

According to an embodiment of the present disclosure, the at least one communication processor (e.g., processor 120 in FIG. 1A, communication processor 510 in FIG. 1C, first communication processor 212 in FIG. 2A, or second communication processor 214, or the unified communications processor 260 in FIG. 2B, is a first subscriber identity module used to connect to a first communication network (e.g., the first communication network 111a in FIG. 1B). : SIM) (e.g., the first SIM 111 in FIG. 1B or 1C) and a second SIM (e.g., used to connect to a second communication network (e.g., the second communication network 112a in FIG. 1B)) It may be connected to the second SIM 112 of FIG. 1B or 1C).

According to an embodiment of the present disclosure, the at least one communication processor (e.g., processor 120 in FIG. 1A, communication processor 510 in FIG. 1C, first communication processor 212 in FIG. 2A, or second communication processor (214), or the unified communications processor 260 of FIG. 2B, in a radio resource control (RRC) idle (RRC_IDLE) state, the second communication network (e.g., the second communication network of FIG. 1B) It may be configured to control the RF circuit (e.g., RF circuit 530 in FIG. 1C) to receive a call signal from a communication network 112a.

According to an embodiment of the present disclosure, the at least one communication processor (e.g., processor 120 in FIG. 1A, communication processor 510 in FIG. 1C, first communication processor 212 in FIG. 2A, or second communication processor 214, or unified communications processor 260 in FIG. 2B, may be further configured to determine whether the calling signal is for a voice call.

According to an embodiment of the present disclosure, the at least one communication processor (e.g., processor 120 in FIG. 1A, communication processor 510 in FIG. 1C, first communication processor 212 in FIG. 2A, or second communication processor (214), or the integrated communications processor 260 of FIG. 2B, based on the fact that the call signal is a call signal for the voice call, the electronic device (e.g., FIGS. 1A, 1B, 1C, 2A) , the second SIM (e.g., the second SIM of FIG. 1B or FIG. 1C) that satisfies the first condition among a plurality of RF paths supportable by the electronic device 101 of FIG. 2B, FIG. 3A, FIG. 3B, or FIG. 3C. 2 may be further configured to select at least one RF path associated with SIM 112).

According to an embodiment of the present disclosure, the at least one communication processor (e.g., processor 120 in FIG. 1A, communication processor 510 in FIG. 1C, first communication processor 212 in FIG. 2A, or second communication processor (214), or the integrated communications processor 260 of FIG. 2B, provides random access (e.g., the second communication network 112a of FIG. 1B) to the second communication network (e.g., the second communication network 112a of FIG. 1B) through the selected at least one RF path. It may be further configured to control the RF circuit (e.g., the RF circuit 530 in FIG. 1C) to perform a random access) procedure.

According to an embodiment of the present disclosure, the at least one communication processor (e.g., processor 120 in FIG. 1A, communication processor 510 in FIG. 1C, first communication processor 212 in FIG. 2A, or second communication processor (214), or the unified communications processor 260 of FIG. 2B, determines that at least one of the selected at least one RF path is associated with the first SIM (e.g., the first SIM 111 of FIG. 1B or FIG. 1C). It can be configured to check whether a valid RF path is being used.

According to an embodiment of the present disclosure, the at least one communication processor (e.g., processor 120 in FIG. 1A, communication processor 510 in FIG. 1C, first communication processor 212 in FIG. 2A, or second communication processor (214), or the unified communications processor 260 of FIG. 2B, determines that at least one of the selected at least one RF path is associated with the first SIM (e.g., the first SIM 111 of FIG. 1B or FIG. 1C). Based on being used as an RF path, the at least one RF path being used as an RF path associated with the first SIM (e.g., the first SIM 111 in FIG. 1B or FIG. 1C) is connected to the plurality of RF paths. At least one of the RF paths excluding the selected at least one RF path among the paths and the transmission RF paths being used as the RF path associated with the first SIM (e.g., the first SIM 111 in FIG. 1B or FIG. 1C) It may be further configured to change.

According to an embodiment of the present disclosure, the at least one communication processor (e.g., processor 120 in FIG. 1A, communication processor 510 in FIG. 1C, first communication processor 212 in FIG. 2A, or second communication processor 214, or unified communications processor 260 in FIG. 2B, may be further configured to determine whether the random access procedure was successful.

According to an embodiment of the present disclosure, the at least one communication processor (e.g., processor 120 in FIG. 1A, communication processor 510 in FIG. 1C, first communication processor 212 in FIG. 2A, or second communication processor 214, or unified communications processor 260 in FIG. 2B) associates with the second SIM (e.g., second SIM 112 in FIG. 1B or FIG. 1C) based on the random access procedure failing. It may be further configured to additionally select at least one RF path.

According to an embodiment of the present disclosure, the at least one communication processor (e.g., processor 120 in FIG. 1A, communication processor 510 in FIG. 1C, first communication processor 212 in FIG. 2A, or second communication processor (214), or the integrated communications processor 260 of FIG. 2B, connects the second communication network (e.g., the second communication network of FIG. 1B) via the selected at least one RF path and the additionally selected at least one path. 112a)) may be further configured to control the RF circuit (e.g., RF circuit 530 in FIG. 1C) to perform the random access procedure.

According to an embodiment of the present disclosure, the at least one processor (e.g., the processor 120 of FIG. 1A, the communication processor 510 of FIG. 1C, the first communication processor 212 of FIG. 2A, or the second communication processor ( 214), or unified communications processor 260 in FIG. 2B, may be further configured to determine whether the random access procedure was successful.

According to an embodiment of the present disclosure, the at least one communication processor (e.g., processor 120 in FIG. 1A, communication processor 510 in FIG. 1C, first communication processor 212 in FIG. 2A, or second communication processor 214, or unified communications processor 260 in FIG. 2B) associates with the second SIM (e.g., second SIM 112 in FIG. 1B or FIG. 1C) based on the random access procedure being successful. It may be further configured to maintain at least one RF path.

According to an embodiment of the present disclosure, the at least one communication processor (e.g., processor 120 in FIG. 1A, communication processor 510 in FIG. 1C, first communication processor 212 in FIG. 2A, or second communication processor (214), or the integrated communications processor 260 of FIG. 2B), based on the fact that the call signal is a call signal for the voice call, the second SIM (e.g., the second SIM of FIG. 1B or FIG. 1C) Before selecting at least one RF path associated with 112)), it may be configured to check whether the second condition is satisfied.

According to an embodiment of the present disclosure, the at least one communication processor (e.g., processor 120 in FIG. 1A, communication processor 510 in FIG. 1C, first communication processor 212 in FIG. 2A, or second communication processor (214), or the integrated communications processor 260 of FIG. 2B), based on the second condition being satisfied, determines whether the second SIM associated with the second SIM (e.g., the second SIM 112 of FIG. 1B or FIG. 1C) is satisfied. Can be configured to select at least one RF path.

According to an embodiment of the present disclosure, the second condition includes at least one of a condition in which the received signal strength of the call signal is less than a critical reception strength, or a condition in which the transmission power applied to the random access procedure is more than the threshold transmission power. can do.

According to an embodiment of the present disclosure, the first condition is a condition in which the average power limit is greater than the average power limit of other RF transmission paths, a condition in which the antenna loss is less than the threshold loss, and RFEE internal It may include at least one of a condition in which the path loss is less than the critical path loss, or a condition in which the specific absorption rate (SAR) margin is more than the critical SAR margin.

According to an embodiment of the present disclosure, the at least one processor (e.g., the processor 120 of FIG. 1A, the communication processor 510 of FIG. 1C, the first communication processor 212 of FIG. 2A, or the second communication processor ( 214), or the integrated communications processor 260 of FIG. 2B, is RRC connected (RRC connected) in the second communication network (e.g., the second communication network 112a of FIG. 1B) based on success in the random access procedure. In the RRC connected: RRC_CONNECTED) state, the RF circuit (e.g., the RF circuit 530 in FIG. 1C) may be further configured to control the voice call to be provided through the selected at least one RF path.

According to an embodiment of the present disclosure, the at least one processor (e.g., the processor 120 of FIG. 1A, the communication processor 510 of FIG. 1C, the first communication processor 212 of FIG. 2A, or the second communication processor ( 214), or the unified communications processor 260 of FIG. 2B), while the voice call is being provided, based on the third condition being satisfied, the second SIM (e.g., the second SIM 112 of FIG. 1B or FIG. 1C) )) may be further configured to additionally select at least one RF path associated with.

According to an embodiment of the present disclosure, the at least one processor (e.g., the processor 120 of FIG. 1A, the communication processor 510 of FIG. 1C, the first communication processor 212 of FIG. 2A, or the second communication processor ( 214), or the unified communications processor 260 of FIG. 2B, configures the RF circuit (e.g., RF of FIG. 1C - Circuit 530) may be further configured to control.

According to an embodiment of the present disclosure, the third condition may include a condition in which the received signal strength of the signal through which the voice call is provided is less than the threshold received signal strength.

According to an embodiment of the present disclosure, the electronic device (e.g., FIGS. 1A, 1B, 1C, 2A, 2B, The electronic device 101 of FIGS. 3A, 3B, or 3C may be in an RRC connected (RRC_CONNECTED) state.

FIG. 5A is a flowchart illustrating a method of operating an electronic device, according to an embodiment.

Before describing FIG. 5A, the electronic device (e.g., the electronic device 101 in FIGS. 1A, 1B, 1C, 2A, 2B, 3A, 3B, or 3C) includes two SIMs. and can operate in DSDA mode. The two SIMs include SIM1 (e.g., the first SIM 111 in FIG. 1B or 1C) and SIM2 (e.g., the second SIM 112 in FIG. 1B or 1C), and SIM1 is connected to the first communication network ( Example: SIM for accessing the first communication network 111a of FIG. 1B), and SIM2 may be a SIM for accessing the second communication network (eg, the second communication network 112a of FIG. 1B). A service provided through a first communication network may be a first service, and a service provided through a second communication network may be a second service. An electronic device may include multiple antennas and use multiple RF paths. Each of the plurality of antennas may correspond to at least one RF path. The RF path may be a signal path corresponding to the RFFE and antenna.

According to one embodiment, the radio resource control (RRC) state of the electronic device in the first communication network is RRC connected (RRC_CONNECTED), and the RRC state of the electronic device in the second communication network is RRC. It may be in an idle (RRC idle: RRC_IDLE) state. Accordingly, among the plurality of RF paths included in the electronic device, RF paths related to the first communication network (e.g., related to SIM1) are used, and the RF paths related to SIM1 are one transmission path (Tx). path) and four reception paths (Rx paths). Hereinafter, for convenience of explanation, the RF path related to SIM1 will be referred to as the “SIM1 RF path,” the transmission path related to SIM1 will be referred to as the “SIM1 transmission path,” and the reception path related to SIM1 will be referred to as the “SIM1 reception path.” The RF path related to SIM2 will be referred to as “SIM2 RF path”, the transmission path related to SIM2 will be referred to as “SIM2 transmission path”, and the reception path related to SIM2 will be referred to as “SIM2 reception path”. RF paths associated with the second communications network (e.g., associated with SIM2) may be used as the electronic device determines that a call from the second communications network (e.g., a call to a voice service) is present, and SIM2 RF The paths may include one SIM2 transmit path and two SIM2 receive paths. If one SIM2 transmit path and two SIM2 receive paths are used, the SIM1 RF paths can be changed to include one SIM1 transmit path and two SIM1 receive paths, or one SIM1 transmit path and four SIM1 receive paths. can be included as is. According to one embodiment, the transmit path and the receive path may be the same RF path.

Referring to Figure 5A, an electronic device (e.g., the electronic device 101 of Figures 1A, 1B, 1C, 2A, 2B, 3A, 3B, or 3C) (e.g., the processor of Figure 1A ( 120), the communication processor 510 of FIG. 1C, the first communication processor 212 or the second communication processor 214 of FIG. 2A, or the integrated communications processor 260 of FIG. 2B) is in the RRC_IDLE state at operation 511. A call signal targeting an electronic device may be received from a second communication network through an RF circuit (e.g., RF circuit 520 in FIG. 1C). In one embodiment, the electronic device may receive a call signal by performing a call monitoring operation through the SIM2 reception path excluding the SIM1 RF paths. The SIM2 reception path used in the call monitoring operation may be an RF path set to operate corresponding to a discontinuous reception (DRX) method in RRC_IDLE state. The SIM2 reception path used in the call monitoring operation may be different from at least one SIM2 RF path used when performing a random access procedure for a subsequent voice call. In one embodiment, an electronic device in the RRC_IDLE state may determine whether to transition to a sleep state or wake up based on a DRX cycle (e.g., 640ms, 1280ms). The electronic device can check the on-duration based on the DRX cycle and check whether a call signal targeting the electronic device is received in an awake state during the on-duration. In one embodiment, on-duration may include the duration in which the electronic device waits to receive physical downlink control channels (PDCCH) after waking up.

The electronic device that has received the calling signal may check whether the calling signal is for a voice call in operation 513. In one embodiment, the electronic device may check whether the paging signal is a paging signal for a voice call based on a paging cause parameter included in the paging signal. For example, when the call cause parameter indicates that the call is due to a voice call, the electronic device can confirm that the call signal is for a voice call.

As a result of the confirmation in operation 513, if the calling signal is not a calling signal for a voice call (operation 513-No), the electronic device selects an RF path corresponding to a calling signal other than the calling signal for the voice call in operation 515. can be performed. The RF path selection operation performed in operation 515 includes at least one of the RF paths of the electronic device other than the SIM1 transmission RF paths (or at least one SIM1 RF transmission path) corresponding to the first communication network in which the electronic device is in the RRC_CONNECTED state. It may include selecting one RF path (or multiple RF paths) as the SIM2 RF path. The RF path selection operation performed in operation 515 includes, when no RF path other than the SIM1 RF path exists among the RF paths of the electronic device, SIM2 RF transmission on at least one of the SIM1 RF reception paths excluding the SIM1 RF transmission path. It may include selecting a path and selecting at least one of the remaining SIM1 RF reception paths as the SIM2 RF reception path. As described in the RF path selection operation performed at operation 515, as the SIM2 RF path is selected, the number of SIM1 RF reception paths may be changed (e.g., reduced) or the SIM1 RF reception paths may be changed. According to one embodiment, selecting an RF path may mean selecting an RFFE and antenna. According to one embodiment, selecting an RF path may mean selecting a combination of an RFFE and an antenna.

As a result of the confirmation in operation 513, if the calling signal is a calling signal for a voice call (operation 513 - Yes), the electronic device may perform an RF path selection operation corresponding to the calling signal for a voice call in operation 517. According to one embodiment, a random access procedure needs to be performed in order to connect a voice call, and in order to increase (e.g., maximize) the probability of success for the random access procedure, the electronic device sets the first condition. Based on , at least one RF path among all RF paths supportable by the electronic device may be selected as the SIM2 RF path corresponding to the second communication network in the RRC_IDLE state. According to one embodiment, the first condition may be based on performance. According to one embodiment, the electronic device may select at least one RF path whose performance is above the threshold performance (e.g., has maximum performance) among all RF paths that can be supported by the electronic device as the SIM2 RF path with the highest priority. there is.

According to one embodiment, the performance of the transmit path is determined by the average power limit, antenna loss, internal path loss, or specific absorption rate (SAR) margin. It may be determined based on at least one of: In one embodiment, internal path loss may mean path loss within the RFFE corresponding to the corresponding transmission path. For example, for a given transmission path, if the internal path loss is small, the maximum transmission power applied to the corresponding transmission path can be increased, and if the antenna loss is low, the total radiation power (TRP) can be increased. there is.

Performance for the receive path may be determined based on at least one of internal path loss and/or antenna loss. For example, for a specific receive path, if the internal path loss is small and the antenna loss is low, the sensitivity for the specific receive path may increase. As the sensitivity of the receiving path increases, the received signal strength of the received signal may also increase. In one embodiment, the received signal strength may include at least one of RSRP, RSSI, RSRQ, RSCP, SNR, or SINR.

In one embodiment, the first condition is a condition in which the average power limit is greater than the average power limit of other RF transmission paths, a condition in which the antenna loss is less than the critical loss, and a condition in which the RFEE internal path loss is less than the critical path loss. Alternatively, it may include at least one of the following conditions: the SAR margin is greater than or equal to the critical SAR margin. Since the SIM2 RF paths include one SIM2 transmission path and two SIM2 reception paths, the electronic device can select the transmission path with the maximum transmission performance among the transmission paths supportable by the electronic device as the SIM2 transmission path, and the electronic device can Among the supportable reception paths, a total of two transmission paths can be selected as the SIM2 transmission path, from the reception path with the highest reception performance to the reception path with the next reception performance. If the RF paths selected as SIM2 RF paths are being used as SIM1 RF paths, the electronic device may allow the selected RF paths to be used as SIM2 RF paths and select SIM1 RF paths from the remaining RF paths.

In operation 519, the electronic device may control the RF circuit to perform a random access procedure for the second communication network through at least one selected SIM2 RF path. According to one embodiment, the random access procedure may include at least one of a 4-step random access procedure or a 2-step random access procedure.

In this way, the electronic device performs a random access procedure by selecting a set number of RF paths in order of best performance, including the RF path with the highest performance among the RF paths that can be supported by the electronic device, as SIM2 RF paths, It is possible to prevent cases where an electronic device cannot receive a voice call. In addition, when the electronic device succeeds in the random access procedure for the second communication network and operates in the RRC_CONNECTED state for the second communication network, it provides voice calls through RF paths with excellent performance, resulting in call drop, and/or situations that may cause service quality degradation, such as mute, can be prevented from occurring.

FIG. 5B is a flowchart illustrating a method of operating an electronic device, according to an embodiment.

Before describing FIG. 5B, the electronic device (e.g., the electronic device 101 in FIGS. 1A, 1B, 1C, 2A, 2B, 3A, 3B, or 3C) includes two SIMs. and can operate in DSDA mode. The two SIMs include SIM1 (e.g., first SIM 111 in FIG. 1B or 1C) and SIM2 (e.g., second SIM 112 in FIG. 1B or 1C), with SIM1 connected to a first communication network (e.g. : A SIM for connecting to the first communication network 111a in FIG. 1B, and SIM2 may be a SIM for connecting to a second communication network (e.g., the second communication network 112a in FIG. 1B). A service provided through a first communication network may be a first service, and a service provided through a second communication network may be a second service. An electronic device may include multiple antennas and use multiple RF paths. Each of the plurality of antennas may correspond to at least one RF path.

According to one embodiment, the RRC state of the electronic device in the first communication network may be the RRC_CONNECTED state, and the RRC state of the electronic device in the second communication network may be the RRC_IDLE state. Accordingly, among the plurality of RF paths included in the electronic device, RF paths related to the first communication network (e.g., related to SIM1) are used, and the RF paths related to SIM1 include one transmit path and four receive paths. may include. RF paths associated with the second communications network (e.g., associated with SIM2) may be used as the electronic device determines that a call from the second communications network (e.g., a call to a voice service) is present, and SIM2 RF The paths may include one SIM2 transmit path and two SIM2 receive paths. If one SIM2 transmit path and two SIM2 receive paths are used, the SIM1 RF paths can be changed to include one SIM1 transmit path and two SIM1 receive paths, or one SIM1 transmit path and four SIM1 receive paths. can be included as is. According to one embodiment, the transmit path and the receive path may be the same RF path.

Referring to Figure 5B, an electronic device (e.g., the electronic device 101 of Figures 1A, 1B, 1C, 2A, 2B, 3A, 3B, or 3C) (e.g., the processor of Figure 1A ( 120), the communication processor 510 of FIG. 1C, the first communication processor 212 or the second communication processor 214 of FIG. 2A, or the integrated communications processor 260 of FIG. 2B) is in the RRC_IDLE state at operation 551. A call signal targeting an electronic device may be received from a second communication network through an RF circuit (e.g., RF circuit 520 in FIG. 1C). Operation 551 may be implemented similarly or substantially the same as that described in operation 511 of FIG. 5A, and therefore detailed description thereof will be omitted.

The electronic device that has received the calling signal may check whether the calling signal is for a voice call in operation 553. Operation 553 may be implemented similarly or substantially the same as that described in operation 513 of FIG. 5A, and therefore detailed description thereof will be omitted. As a result of the confirmation in operation 553, if the calling signal is not a calling signal for a voice call (operation 553-No), the electronic device selects an RF path corresponding to a calling signal other than the calling signal for the voice call in operation 555. can be performed. Operation 555 may be implemented similarly or substantially the same as that described in operation 515 of FIG. 5A, and therefore detailed description thereof will be omitted.

As a result of the confirmation in operation 553, if the calling signal is a calling signal for a voice call (operation 553 - Yes), the electronic device can check whether the second condition is satisfied in operation 557. According to one embodiment, the second condition may include at least one of a condition in which the received signal strength of the call signal is less than the threshold received signal strength, or a condition in which the transmission power applied to the random access procedure is more than the threshold transmission power. In one embodiment, the received signal strength may include at least one of RSRP, RSSI, RSRQ, RSCP, SNR, or SINR. For example, when the received signal strength is RSRP, the critical received signal strength may be -100dBm. As another example, when the received signal strength is SNR, the critical received signal strength may be 0dB. As an example, the threshold transmit power may be 15dBm.

As a result of the check in operation 557, if the second condition is not satisfied (operation 557-No), the electronic device may perform operation 555.

As a result of the confirmation in operation 557, if the second condition is satisfied (operation 557 - Yes), the electronic device may perform an RF path selection operation corresponding to the call signal for a voice call in operation 559. According to one embodiment, a random access procedure needs to be performed in order to connect a voice call, and in order to increase (e.g., maximize) the probability of success for the random access procedure, the electronic device sets the first condition. Based on , at least one RF path among all RF paths supportable by the electronic device may be selected as the SIM2 RF path corresponding to the second communication network in the RRC_IDLE state. According to one embodiment, the first condition may be based on performance. Operation 559 may be implemented similarly or substantially the same as that described in operation 517 of FIG. 5A, and therefore detailed description thereof will be omitted.

In operation 561, the electronic device may control the RF circuit to perform a random access procedure for the second communication network through at least one selected SIM2 RF path. According to one embodiment, the random access procedure may include at least one of a 4-step random access procedure or a 2-step random access procedure.

In operation 563, the electronic device can check whether the random access procedure was successful. If the random access procedure is successful (operation 563 - Yes), the electronic device may maintain at least one selected SIM2 RF path in operation 565. Thereafter, the electronic device may control the RF circuit to provide a voice call through at least one selected SIM2 RF path in the RRC_CONNECTED state.

In operation 563, if the random access procedure fails as a result of the check (operation 563-No), the electronic device may additionally select at least one SIM2 RF path in operation 567. According to one embodiment, when the random access procedure fails, the electronic device may additionally select at least one SIM2 reception path to increase the probability of success for the random access procedure. In operation 561, the electronic device may control the RF circuit to perform a random access procedure through at least one already selected SIM2 RF path and at least one additionally selected SIM2 RF path.

In this way, the electronic device performs a random access procedure by selecting a set number of RF paths in order of best performance, including the RF path with the highest performance among the RF paths that can be supported by the electronic device, as SIM2 RF paths, It is possible to prevent cases where an electronic device cannot receive a voice call. In addition, when the electronic device succeeds in the random access procedure for the second communication network and operates in the RRC_CONNECTED state for the second communication network, the electronic device provides a voice call through RF paths with excellent performance, so call drop and/or mute. It is possible to prevent situations that may cause a decrease in service quality, such as:

Figure 6 is a flowchart illustrating a method of operating an electronic device, according to an embodiment.

Before describing Figure 6, the electronic device (e.g., the electronic device 101 in Figures 1A, 1B, 1C, 2A, 2B, 3A, 3B, or 3C) includes two SIMs. and can operate in DSDA mode. The two SIMs include SIM1 (e.g., the first SIM 111 in FIG. 1B or 1C) and SIM2 (e.g., the second SIM 112 in FIG. 1B or 1C), and SIM1 is connected to the first communication network ( Example: SIM for accessing the first communication network 111a of FIG. 1B), and SIM2 may be a SIM for accessing the second communication network (eg, the second communication network 112a of FIG. 1B). A service provided through a first communication network may be a first service, and a service provided through a second communication network may be a second service. An electronic device may include multiple antennas and use multiple RF paths. Each of the plurality of antennas may correspond to at least one RF path.

According to one embodiment, the RRC state of the electronic device in the first communication network may be the RRC_CONNECTED state, and the RRC state of the electronic device in the second communication network may be the RRC_IDLE state. Accordingly, among the plurality of RF paths included in the electronic device, RF paths related to the first communication network (e.g., related to SIM1) are used, and the RF paths related to SIM1 include one transmit path and four receive paths. may include. RF paths associated with the second communications network (e.g., associated with SIM2) may be used as the electronic device determines that a call from the second communications network (e.g., a call to a voice service) is present, and SIM2 RF The paths may include one SIM2 transmit path and two SIM2 receive paths. If one SIM2 transmit path and two SIM2 receive paths are used, the SIM1 RF paths can be changed to include one SIM1 transmit path and two SIM1 receive paths, or one SIM1 transmit path and four SIM1 receive paths. can be included as is. According to one embodiment, the transmit path and the receive path may be the same RF path.

Referring to Figure 6, an electronic device (e.g., the electronic device 101 of Figures 1A, 1B, 1C, 2A, 2B, 3A, 3B, or 3C) (e.g., the processor of Figure 1A ( 120), the communication processor 510 of FIG. 1C, the first communication processor 212 or the second communication processor 214 of FIG. 2A, or the integrated communications processor 260 of FIG. 2B) is in the RRC_CONNECTED state at operation 611. Through an RF circuit (e.g., RF circuit 520 in FIG. 1C), a connection for a voice call with a second communication network may be established. For example, the electronic device may perform a random access procedure for the second communication network as it receives a call signal for a voice call from the second communication network in the RRC_IDLE state as described in FIG. 5A or 5B, and random As the access procedure is successful, a connection for a voice call can be established with the second communication network in RRC_CONNECTED state. The electronic device selects at least one SIM2 RF path among RF paths with a threshold performance or higher that satisfies the first condition as described in FIG. 5A or 5B, and performs a voice call call based on the selected at least one SIM2 RF path. A connection can be established.

In operation 613, the electronic device may check whether the third condition is satisfied while providing a voice call through the established voice call connection. According to one embodiment, the third condition may include a condition in which the received signal strength of the signal through which the voice call is provided is less than the threshold received signal strength. In one embodiment, the received signal strength may include at least one of RSRP, RSSI, RSRQ, RSCP, SNR, or SINR.

If the third condition is satisfied as a result of the check in operation 613 (operation 613 - Yes), the electronic device may newly select at least one path that satisfies the first condition as the SIM2 RF path. According to one embodiment, when the received signal strength of a signal provided for a voice call is less than the threshold received signal strength, the electronic device may additionally select at least one SIM2 reception path to improve the quality of the voice call. In operation 615, the electronic device may control the RF circuit to provide a voice call through at least one already selected SIM2 RF path and at least one additionally selected SIM2 RF path.

In this way, the electronic device provides a voice call by selecting a set number of RF paths as SIM2 RF paths in order of best performance, including the RF path with the highest performance among the RF paths that can be supported by the electronic device, It is possible to prevent situations that may cause service quality degradation, such as call dropping and/or muting, from occurring.

FIG. 7 is a diagram illustrating an operation of selecting an RF path for a voice call in an RF circuit according to an embodiment.

Referring to FIG. 7, an RF circuit (e.g., RF circuit 520 in FIG. 1C) includes a transceiver 400, a plurality of LFEMs (411, 415, 419, 425), and a plurality of LPAMIDs (413, 417, 421). , 423), and/or may include a plurality of antennas (eg, antennas 1 to 9).

According to one embodiment, the first LFEM 411, the first LPAMID 413, the second LFEM 415, the second LPAMID 417, and/or the third LFEM 419 are electronic devices (e.g., FIG. 1, can be connected to antennas (e.g., antennas 5 to 9) disposed on the top of the electronic device 101 of FIGS. 2A, 2B, 3A, 3B, 3C, 4, or 5). The third LPAMID 421, fourth LPAMID 423, and/or fourth LFEM 425 may be connected to antennas (eg, antennas 1 to 4) disposed at the bottom of the electronic device.

According to one embodiment, antenna 1 may be a LB/MB transmit antenna, antenna 2 may be a HB transmit antenna, antenna 3 may be a MB MIMO/UHB antenna, and antenna 4 may be an HB MIMO/UHB antenna. and antenna 5 may be a LB/MB/HB antenna, antenna 6 may be a MB MIMO transmission/HB MIMO transmission antenna, antenna 7 may be a UHB MIMO antenna, and antenna 8 may be a UHB transmission antenna, Antenna 9 may be a MB MIMO/HB MIMO antenna. According to one embodiment, each of the transmitting antennas Antenna 1, Antenna 2, Antenna 6, and/or Antenna 8 may also be used as a receiving antenna.

According to one embodiment, for MB/HB, LPAMIDs exist on both the lower side and upper side, and the performance of the RF path (e.g., transmission path) corresponding to the LPAMIDs 421 and 423 placed on the lower side is The performance may be superior to that of the RF path (e.g., transmission path) corresponding to the LPAMIDs 413 and 417 placed on the upper side. According to one embodiment, for UHB (e.g., band N77, band N78, band N79, band B48), there may be a transmission path corresponding to the second LPAMID 417 located on the upper side.

The electronic device may include two SIMs (eg, SIM1 and SIM2) (eg, the first SIM 111 and the second SIM 112 in FIG. 1B or 1C). The electronic device may use SIM1 to connect to a first communication network (e.g., the first communication network 111a in FIG. 1B) and a second communication network (e.g., the second communication network 112a in FIG. 1B) using SIM2. )) can be accessed. In FIG. 7, it is assumed that the electronic device operates in the RRC_CONNECTED state for the first communication network and in the RRC_IDLE state for the second communication network. Accordingly, the SIM1 RF paths (marked “sim1” in FIG. 7) are the SIM1 transmit path corresponding to antenna 1 and the fourth LPAMID 423, and the SIM1 receive path corresponding to antenna 1 and the fourth LPAMID 423. path, a SIM1 receive path corresponding to antenna 3 and the fourth LFEM (425), a SIM1 receive path corresponding to antenna 5 and the first LFEM (411), and a SIM1 receive path corresponding to antenna 6 and the first LPAMID (413). may include.

In this way, while operating in the RRC_CONNECTED state in the first communication network, when a call signal indicating a voice call is received from the second communication network, the electronic device meets the first condition among all RF paths supportable by the electronic device. It may be necessary to select at least one of the RF paths as the SIM2 RF path. The first condition may be implemented similarly or substantially the same as that described in FIGS. 5A and 5B, and therefore its detailed description will be omitted here.

FIG. 8 is a diagram illustrating an operation of selecting an RF path for a voice call in an RF circuit according to an embodiment.

Referring to FIG. 8, the RF circuit (e.g., the RF circuit 520 in FIG. 1C) includes a transceiver 400, a plurality of LFEMs (411, 415, 419, 425), and a plurality of LPAMIDs (413, 417, 421). , 423), and/or may include a plurality of antennas (eg, antennas 1 to 9). The structure of the RF circuit shown in FIG. 8 can be implemented in the same way as described in FIG. 7, and therefore its detailed description will be omitted here.

As described in FIG. 7, the electronic device in the RRC_CONNECTED state in the first communication network has a SIM1 transmission path corresponding to antenna 1 and the fourth LPAMID 423, a SIM1 reception path corresponding to antenna 3 and the fourth LFEM 425, A SIM1 receive path corresponding to antenna 5 and the first LFEM (411), and a SIM1 receive path corresponding to antenna 6 and the first LPAMID (413) may be in use. In this way, while operating in the RRC_CONNECTED state in the first communication network, when the electronic device receives a call signal indicating a voice call from the second communication network operating in the RRC_IDLE state, the electronic device receives all RF signals that can be supported by the electronic device. It may be necessary to select at least one of the RF paths that satisfy the first condition among the paths as the SIM2 RF path. The first condition may be implemented similarly or substantially the same as that described in FIGS. 5A and 5B, and therefore its detailed description will be omitted here. According to one embodiment, when SIM2 RF paths are set, the electronic device may reduce the number of SIM1 RF paths by the number of SIM2 RF paths. According to one embodiment, when SIM2 RF paths are set in the electronic device, the number of SIM1 RF paths may be maintained without change. In FIG. 8, when SIM2 RF paths are set, it is assumed that the number of SIM1 RF paths is reduced by the number of SIM2 RF paths, and the number of SIM2 RF paths is assumed to be 2.

Among the RF paths that satisfy the first condition, the RF path corresponding to antenna 2 and the fourth LPAMID 423 may be the RF path with maximum performance. Among the RF paths that satisfy the first condition, the RF path with the maximum performance, excluding the RF path with the maximum performance, may be the RF path corresponding to antenna 5 and the first LFEM 411. Accordingly, the electronic device may select the RF path corresponding to antenna 2 and the fourth LPAMID 423 and the RF path corresponding to antenna 5 and the first LFEM 411 as the SIM2 RF path. The RF path corresponding to antenna 2 and the fourth LPAMID (423) is the SIM2 transmission path, the RF path corresponding to antenna 2 and the fourth LPAMID (423), and the RF path corresponding to antenna 5 and the first LFEM (411) are the SIM2 transmission path. This may be a SIM2 reception path.

Since the number of SIM2 reception paths is 2, the number of SIM1 reception paths can be changed to 2, and as the SIM2 RF paths are selected, the SIM1 RF paths can also be changed (or switched). For example, the SIM1 transmission path is changed from a transmission path corresponding to antenna 1 and the fourth LPAMID 423 to a transmission path corresponding to antenna 6 and the first LPAMID 413, and the SIM1 reception path is changed from a transmission path corresponding to antenna 1 and the fourth LPAMID 413. A SIM1 receive path corresponding to LPAMID 423, a SIM1 receive path corresponding to antenna 3 and the fourth LFEM 425, a SIM1 receive path corresponding to antenna 5 and the first LFEM 411, and antenna 6 and the first LPAMID. The SIM1 reception path corresponding to 413 may be changed to a reception path corresponding to antenna 6 and the first LPAMID 413 and a SIM1 reception path corresponding to antenna 3 and the fourth LFEM 425.

In Figure 8, SIM1 RF paths are marked "sim1".

FIG. 9 is a diagram illustrating an operation of selecting an RF path for a voice call in an RF circuit according to an embodiment.

Referring to FIG. 9, an RF circuit (e.g., RF circuit 520 in FIG. 1C) includes a transceiver 400, a plurality of LFEMs (411, 415, 419, 425), and a plurality of LPAMIDs (413, 417, 421). , 423), and/or may include a plurality of antennas (eg, antennas 1 to 9). The structure of the RF circuit shown in FIG. 9 can be implemented in the same way as described in FIG. 7, and therefore its detailed description will be omitted here.

As described in FIG. 8, while operating in the RRC_CONNECTED state in the first communication network, when the electronic device receives a call signal indicating a voice call from the second communication network operating in the RRC_IDLE state, the electronic device It may be necessary to select at least one of the RF paths that satisfy the first condition among all RF paths that can be supported as the SIM2 RF path.

Among the RF paths that satisfy the first condition, the RF path corresponding to antenna 2 and the fourth LPAMID 423 may be the RF path with maximum performance. Among the RF paths that satisfy the first condition, the RF path with the maximum performance, excluding the RF path with the maximum performance, may be the RF path corresponding to antenna 5 and the first LFEM 411. Accordingly, the electronic device may select the RF path corresponding to antenna 2 and the fourth LPAMID 423 and the RF path corresponding to antenna 5 and the first LFEM 411 as the SIM2 RF path. The RF path corresponding to antenna 2 and the fourth LPAMID (423) is the SIM2 transmission path, the RF path corresponding to antenna 2 and the fourth LPAMID (423), and the RF path corresponding to antenna 5 and the first LFEM (411) are the SIM2 transmission path. This may be a SIM2 reception path.

Since the number of SIM2 reception paths is 2, the number of SIM1 RF reception paths can be changed to 2, and as the SIM2 RF paths are selected, the SIM1 RF paths can also be changed (or switched). For example, the SIM1 transmission path is changed from a transmission path corresponding to antenna 1 and the fourth LPAMID 423 to a transmission path corresponding to antenna 6 and the first LPAMID 413, and the SIM1 reception path is changed from a transmission path corresponding to antenna 1 and the fourth LPAMID 413. A SIM1 receive path corresponding to LPAMID 423, a SIM1 receive path corresponding to antenna 3 and the fourth LFEM 425, a SIM1 receive path corresponding to antenna 5 and the first LFEM 411, and antenna 6 and the first LPAMID. It can be changed from the SIM1 reception path corresponding to (413) to the SIM1 reception path corresponding to antenna 6 and the first LPAMID (413) and the SIM1 reception path corresponding to antenna 3 and the fourth LFEM (425).

According to one embodiment, if a radio access technology (RAT)/band for a voice call supports four receive paths, the electronic device receives via one or two receive paths during the on-duration. While performing the operation, when a paging signal indicating a voice call (e.g., a paging signal including a paging cause parameter indicating a voice call) is received, two receiving paths (e.g., a paging signal including a paging cause parameter indicating a voice call) that satisfy the first condition are received. For example, a reception operation can be performed through four reception paths (for example, LTE case) or four reception paths (for example, NR case).

FIG. 10 is a diagram illustrating an operation of selecting an RF path for a voice call in an RF circuit according to an embodiment.

Referring to FIG. 10, an RF circuit (e.g., RF circuit 520 in FIG. 1C) includes a transceiver 400, a plurality of LFEMs (411, 415, 419, 425), and a plurality of LPAMIDs (413, 417, 421). , 423), and/or may include a plurality of antennas (eg, antennas 1 to 9). The structure of the RF circuit shown in FIG. 10 can be implemented in the same way as described in FIG. 7, and therefore its detailed description will be omitted here.

As described in Figure 9, as a call signal representing a voice call is received from the second communication network, the SIM1 RF paths are connected to one SIM1 transmit path (e.g., the transmit path corresponding to antenna 6 and the first LPAMID 413). and two SIM1 receive paths (e.g., a receive path corresponding to antenna 6 and the first LPAMID 413 and a receive path corresponding to antenna 3 and the fourth LFEM 425), wherein the SIM2 RF paths are connected to one SIM2 A transmit path (e.g., a transmit path corresponding to antenna 2 and the fourth LPAMID 423) and two SIM2 receive paths (e.g., a receive path corresponding to antenna 2 and the fourth LPAMID 423 and a receive path corresponding to antenna 5 and the first LFEM) It may include a receiving path corresponding to (411).

The electronic device can perform a random access procedure through one SIM1 transmission path and two SIM2 reception paths that satisfy the first condition. However, the random access procedure may fail, in which case the electronic device may re-perform the random access procedure. According to one embodiment, the random access procedure may be re-performed a set number of times (e.g., the number of times indicated by the parameter preambleTransMax). In one embodiment, the parameter preambleTransMax may indicate the maximum number of transmissions for a random access preamble signal performed before failure for the random access procedure is declared. As the random access procedure must be re-performed, the electronic device can increase the probability of success for the random access procedure by increasing the number of SIM2 reception paths from 2 to 4. For example, the four SIM2 receive paths are the existing SIM2 receive paths, a receive path corresponding to antenna 2 and the fourth LPAMID 423, a receive path corresponding to antenna 5 and the first LFEM 411, and a new SIM2 receive path. The paths may include a reception path corresponding to antenna 9 and the third LEFM 419 and a reception path corresponding to antenna 4 and the fourth LEFM 425.

Additionally, when the number of SIM2 reception paths increases from 2 to 4, the number of SIM1 reception paths may change from 2 to 1. One SIM1 receive path may be one of a receive path corresponding to antenna 6 and the first LPAMID (413) and a receive path corresponding to antenna 3 and the fourth LFEM (425).

According to one embodiment, an operation in which an electronic device performs a random access procedure may be described as follows.

First, an electronic device that has received a call signal including a call cause indicating a voice call from the second communication network can confirm that a voice call targeting the electronic device exists. It may be desirable for the electronic device to perform a random access operation to the second communication network as quickly as possible to establish a connection for a voice call. However, a data call from the first communication network may be being provided, so the electronic device may wait until a time when there is no scheduling for the data call and then perform a random access procedure for the voice call. . The electronic device may need to start performing the random access procedure for voice calls at least before the next DRX cycle (e.g. 640ms, 1280ms). This may be because, if the electronic device does not perform the random access procedure even though the random access procedure is required, the second communication network (eg, the second base station) may not establish a connection with the electronic device. For example, when the electronic device performs a random access procedure in the third DRX cycle after receiving a call signal, the second communication network may not perform a connection with the electronic device for a voice call. Therefore, in order to stably establish a connection for a voice call, it may be necessary to perform a random access procedure for a voice call within one DRX cycle after the call signal is received.

According to one embodiment, the period of the subframe number (e.g., 20 ms) in which the electronic device performs a random access procedure based on the parameter prach-ConfigIndex included in system information block (SIB) 2. ~10ms), and an expiration time (e.g., 400ms) may be determined. In one embodiment, the expiration time may be set by a set timer (eg, timer T300 or timer T301).

Table 1 below shows parameters related to the random access procedure included in SIB2.

[Table 1]

In Table 1, timer T300 and timer T301 may be defined as shown in Table 2 below.

[Table 2]

When the electronic device confirms that a call signal for a voice call is received from the second communication network, it can check the scheduling time for the data call being provided from the first communication network. According to one embodiment, the electronic device may check the scheduling time for the data call based on control information (e.g., downlink control information (DCI) format) received from the first communication network. .

After receiving a call signal for a voice call, the electronic device may set timer T300 or timer T301 and perform a random access procedure until timer T300 or timer T301 expires.

FIG. 11 is a diagram for explaining an operation of performing a random access procedure, according to an embodiment.

Referring to FIG. 11 , an electronic device (e.g., the electronic device 101 of FIGS. 1A, 1B, 1C, 2A, 2B, 3A, 3B, or 3C) (e.g., the processor of FIG. 1A ( 120), the communication processor 510 of FIG. 1C, the first communication processor 212 or the second communication processor 214 of FIG. 2A, or the integrated communication processor 260 of FIG. 2B) uses SIM1 to perform first communication You can connect to the network, and you can connect to the second communication network using SIM2. In the first communication network, the electronic device may be in the RRC_CONNECTED state and may be receiving a data call. In the second communication network, the electronic device may be in the RRC_IDLE state. In FIG. 11, the operation of the electronic device related to SIM1 is marked as “SIM1,” and the operation of the electronic device related to SIM2 is marked as “SIM2.”

While receiving a data call through the first communication network, the electronic device may receive a call signal 1111 indicating a voice call from the second communication network within a DRX cycle. The electronic device that receives the call signal indicating a voice call may start timer T300 or timer T301, and timer T300 or timer T301 may expire after an expiration time (e.g., 400 ms) (1113).

The electronic device may check the scheduling time for the data call based on control information (eg, DCI format) received from the first communication network. The electronic device has an interval time (1115) in which there is no traffic in the connection for the data call before the last random access timing (1117) before the expiration time of timer T300 or timer T301. You can confirm that this exists. In Figure 11, random access timing is marked “RACH timing”.

In this way, before the last random access timing (1117) before the expiration time of timer T300 or timer T301, if there is an interval time (1115) in which there is no traffic in the connection for a data call, the electronic device At 1115, at least one SIM2 RF path to be used in the random access procedure can be selected. In the case of a random access procedure for a voice call, it may be desirable to perform it as quickly as possible, but since the electronic device is receiving a data call from the first communication network, there is a time period 1115 in which there is no traffic in the connection for the data call. You can check and select at least one SIM2 RF path used for the random access procedure in the corresponding time interval 1115. At least one SIM2 RF path may be selected from among RF paths supportable by the electronic device that satisfy the first condition. The first condition and the operation of selecting the SIM2 RF path may be implemented similarly or substantially the same as those described in FIGS. 5A, 5B, and 5C, and therefore detailed description thereof will be omitted here.

FIG. 12 is a diagram for explaining an operation of performing a random access procedure, according to an embodiment.

Referring to Figure 12, an electronic device (e.g., the electronic device 101 of Figures 1A, 1B, 1C, 2A, 2B, 3A, 3B, or 3C) (e.g., the processor of Figure 1A ( 120), the communication processor 510 of FIG. 1C, the first communication processor 212 or the second communication processor 214 of FIG. 2A, or the integrated communication processor 260 of FIG. 2B) uses SIM1 to perform first communication You can connect to the network, and you can connect to the second communication network using SIM2. In the first communication network, the electronic device may be in the RRC_CONNECTED state and may be receiving a data call. In the second communication network, the electronic device may be in the RRC_IDLE state. In FIG. 12, the operation of the electronic device related to SIM1 is marked as “SIM1,” and the operation of the electronic device related to SIM2 is marked as “SIM2.”

As described in FIG. 11, while receiving a data call through a first communication network, the electronic device may receive a call signal 1111 indicating a voice call from the second communication network within a DRX cycle. The electronic device that receives the call signal indicating a voice call may start timer T300 or timer T301, and timer T300 or timer T301 may expire after an expiration time (e.g., 400 ms) (1113). The electronic device may check the scheduling time for the data call based on control information (eg, DCI format) received from the first communication network. The electronic device may confirm that before the last random access timing 1117 before the expiration time of timer T300 or timer T301, there is a time period 1115 in which there is no traffic in the connection for a data call. In Figure 12, random access timing is marked “RACH timing”.

In this way, before the last random access timing (1117) before the expiration time of timer T300 or timer T301, if there is a time interval (1115) in which there is no traffic in the connection for a data call, the electronic device operates in the corresponding time interval (1115). At least one SIM2 RF path can be selected to be used for the random access procedure. In the case of a random access procedure for a voice call, it may be desirable to perform it as quickly as possible, but since the electronic device is receiving a data call from the first communication network, there is a time period 1115 in which there is no traffic in the connection for the data call. You can check and select at least one SIM2 RF path used for the random access procedure in the corresponding time interval 1115. The first condition and the operation of selecting the SIM2 RF path may be implemented similarly or substantially the same as those described in FIGS. 5A, 5B, and 5C, and therefore detailed description thereof will be omitted here. The electronic device may need to perform a random access procedure before the next DRX cycle 1119.

The period of the random access procedure may be relatively short, such as 20 ms to 10 ms, and therefore, if there can be a time interval 1115 in which there is no traffic in the connection for the data call only before the last random access timing 1117, at least one selected It may be possible to perform a random access procedure based on the SIM2 RF path. During the time interval 1115, the electronic device may select at least one SIM2 RF path, and accordingly, a set number of RF paths, including the RF path with the maximum performance among the RF paths supportable by the electronic device, are selected as the SIM2 RF path. can be selected. Hereinafter, for convenience of explanation, the RF paths that satisfy the first condition among the RF paths supportable by the electronic device will be referred to as “high priority paths,” and the remaining paths will be referred to as “low priority paths.” It will be called “path)”. The high priority path may be selected as the SIM2 RF path, and the low priority path may be selected as the SIM1 RF path. Therefore, for a data call connection, the electronic device can change the SIM1 RF path from the high priority path to the low priority path in the time interval 1115. Accordingly, in a data call connection, the electronic device does not perform transmission and reception operations through the high priority path (shown as “high priority path sleep” in FIG. 12), but performs transmission and reception operations through the low priority path. (in FIG. 12, shown as “low priority path wake up”).

After the time interval 1115 has elapsed, the electronic device may perform a random access procedure through at least one SIM2 RF path selected in the random access timing 1211. Since the electronic device selected the high priority path as the SIM2 RF path, the electronic device can perform a random access procedure through the high priority path. In FIG. 12, the operation of performing a random access procedure for a voice call is marked as “RACH using high priority path.” The electronic device may need to perform a random access procedure before the next DRX cycle 1119.

FIG. 13 is a diagram for explaining an operation of performing a random access procedure, according to an embodiment.

Referring to Figure 13, an electronic device (e.g., the electronic device 101 of Figures 1A, 1B, 1C, 2A, 2B, 3A, 3B, or 3C) (e.g., the processor of Figure 1A ( 120), the communication processor 510 of FIG. 1C, the first communication processor 212 or the second communication processor 214 of FIG. 2A, or the integrated communication processor 260 of FIG. 2B) uses SIM1 to perform first communication You can connect to the network, and you can connect to the second communication network using SIM2. In the first communication network, the electronic device may be in the RRC_CONNECTED state and may be receiving a data call. In the second communication network, the electronic device may be in the RRC_IDLE state. In FIG. 13, the operation of the electronic device related to SIM1 is marked as “SIM1,” and the operation of the electronic device related to SIM2 is marked as “SIM2.”

While receiving a data call through the first communication network, the electronic device may receive a call signal 1111 indicating a voice call from the second communication network within a DRX cycle. The electronic device that receives the call signal indicating a voice call may start timer T300 or timer T301, and timer T300 or timer T301 may expire after an expiration time (e.g., 400 ms) (1113).

The electronic device may check the scheduling time for the data call based on control information (eg, DCI format) received from the first communication network. The electronic device may confirm that there is no time period in which traffic does not exist in the connection for a data call before the last random access timing (1117) before the expiration time of timer T300 or timer T301 (1311). In Figure 13, random access timing is marked “RACH timing”.

In this way, before the last random access timing 1117 before the expiration time of timer T300 or timer T301, if there is no time interval in which there is no traffic in the connection for the data call, the electronic device performs the last random access timing in the connection for the data call. Perform transmission throttling (Tx throttling) operation or reception throttling (Rx throttling) operation in the time interval (e.g., 1 subframe or 1 frame) before the access timing 1117, and perform the transmission throttling (Rx throttling) operation in the time interval. At least one SIM2 RF path can be selected to be used for the random access procedure. In the case of a random access procedure for a voice call, it may be desirable to perform it as quickly as possible, but since the electronic device is receiving a data call from the first communication network, it must check the time section in which there is no traffic in the connection for the data call. , it may be necessary to select at least one SIM2 RF path used for the random access procedure in the corresponding time interval. However, if there is no time period in which there is no traffic in the connection for a data call, the electronic device operates Tx throttling or Rx in a relatively short time period for the data call to perform a random access procedure for a voice call. The throttling operation allows selection of at least one SIM2 RF path to be used for the random access procedure.

At least one SIM2 RF path may be selected from among RF paths supportable by the electronic device that satisfy the first condition. The first condition and the operation of selecting the SIM2 RF path may be implemented similarly or substantially the same as those described in FIGS. 5A, 5B, and 5C, and therefore detailed description thereof will be omitted here.

FIG. 14 is a diagram for explaining an operation of performing a random access procedure, according to an embodiment.

Referring to Figure 14, an electronic device (e.g., the electronic device 101 of Figures 1A, 1B, 1C, 2A, 2B, 3A, 3B, or 3C) (e.g., the processor of Figure 1A ( 120), the communication processor 510 of FIG. 1C, the first communication processor 212 or the second communication processor 214 of FIG. 2A, or the integrated communication processor 260 of FIG. 2B) uses SIM1 to perform first communication You can connect to the network, and you can connect to the second communication network using SIM2. In the first communication network, the electronic device may be in the RRC_CONNECTED state and may be receiving a data call. In the second communication network, the electronic device may be in the RRC_IDLE state. In FIG. 14, the operation of the electronic device related to SIM1 is marked as “SIM1,” and the operation of the electronic device related to SIM2 is marked as “SIM2.”

While receiving a data call through the first communication network, the electronic device may receive a call signal 1111 indicating a voice call from the second communication network within a DRX cycle. The electronic device that receives the call signal indicating a voice call may start timer T300 or timer T301, and timer T300 or timer T301 may expire after an expiration time (e.g., 400 ms) (1113).

The electronic device may check the scheduling time for the data call based on control information (eg, DCI format) received from the first communication network. The electronic device may confirm that there is no time period in which traffic does not exist in the connection for a data call before the last random access timing 1117 before the expiration time of timer T300 or timer T301. In Figure 14, random access timing is marked “RACH timing”.

In this way, before the last random access timing 1117 before the expiration time of timer T300 or timer T301, if there is no time period in which there is no traffic in the connection for the data call, the electronic device performs the last random access timing in the connection for the data call. Tx throttling operation may be performed in the time interval 1411 (e.g., 1 subframe or 1 frame) before the access timing 1117, and at least one SIM2 RF path used for the random access procedure may be selected in the corresponding time interval. . By selecting at least one SIM2 RF path in this relatively short time interval 1411, the time during which data transmission is interrupted can be minimized.

During the time interval 1411, the electronic device may select at least one SIM2 RF path, and accordingly, a set number of RF paths, including the RF path with the maximum performance among the RF paths supportable by the electronic device, are selected as the SIM2 RF path. can be selected. According to one embodiment, the high priority path may be selected as the SIM2 RF path, and the low priority path may be selected as the SIM1 RF path. Therefore, for a data call connection, the electronic device can change the SIM1 RF path from the high priority path to the low priority path in the time interval 1411. Accordingly, in a data call connection, the electronic device does not perform transmission and reception operations through the high priority path (shown as “high priority path sleep” in FIG. 14), but performs transmission and reception operations through the low priority path. (in FIG. 14, shown as “low priority path wake up”).

After the time interval 1411 has elapsed, the electronic device may perform a random access procedure through at least one SIM2 RF path selected in the random access timing 1413. Since the electronic device selected the high priority path as the SIM2 RF path, the electronic device can perform a random access procedure through the high priority path. In FIG. 14, the operation of performing a random access procedure for a voice call is marked as “RACH using high priority path.” The electronic device may need to perform a random access procedure before the next DRX cycle 1119.

FIG. 15 is a diagram for explaining an operation of performing a random access procedure, according to an embodiment.

Referring to Figure 15, an electronic device (e.g., the electronic device 101 of Figures 1A, 1B, 1C, 2A, 2B, 3A, 3B, or 3C) (e.g., the processor of Figure 1A ( 120), the communication processor 510 of FIG. 1C, the first communication processor 212 or the second communication processor 214 of FIG. 2A, or the integrated communication processor 260 of FIG. 2B) uses SIM1 to perform first communication You can connect to the network, and you can connect to the second communication network using SIM2. In the first communication network, the electronic device may be in the RRC_CONNECTED state and may be receiving a data call. In the second communication network, the electronic device may be in the RRC_IDLE state. In FIG. 15, the operation of the electronic device related to SIM1 is marked as “SIM1,” and the operation of the electronic device related to SIM2 is marked as “SIM2.”

While receiving a data call through the first communication network, the electronic device may receive a call signal 1111 indicating a voice call from the second communication network within a DRX cycle. The electronic device that receives the call signal indicating a voice call may start timer T300 or timer T301, and timer T300 or timer T301 may expire after an expiration time (e.g., 400 ms) (1113).

The electronic device may check the scheduling time for the data call based on control information (eg, DCI format) received from the first communication network. The electronic device may confirm that there is no time period in which traffic does not exist in the connection for a data call before the last random access timing 1117 before the expiration time of timer T300 or timer T301. In Figure 15, random access timing is marked “RACH timing”.

In this way, before the last random access timing 1117 before the expiration time of timer T300 or timer T301, if there is no time period in which there is no traffic in the connection for the data call, the electronic device performs the last random access timing in the connection for the data call. The Rx throttling operation may be performed in the time interval 1511 (e.g., 1 subframe or 1 frame) before the access timing 1117, and at least one SIM2 RF path used for the random access procedure may be selected in the corresponding time interval. . By selecting at least one SIM2 RF path in this relatively short time interval 1511, the time during which data reception is interrupted can be minimized.

During the time interval 1511, the electronic device may select at least one SIM2 RF path, and accordingly, a set number of RF paths, including the RF path with the maximum performance among the RF paths supportable by the electronic device, are selected as the SIM2 RF path. can be selected. According to one embodiment, the high priority path may be selected as the SIM2 RF path, and the low priority path may be selected as the SIM1 RF path. Therefore, for a data call connection, the electronic device can change the SIM1 RF path from the high priority path to the low priority path in the time interval 1511. Accordingly, in a data call connection, the electronic device does not perform transmission and reception operations through the high priority path (shown as “high priority path sleep” in FIG. 15), but performs transmission and reception operations through the low priority path. (in FIG. 15, shown as “low priority path wake up”).

After the time interval 1511 has elapsed, the electronic device may perform a random access procedure through at least one SIM2 RF path selected in the random access timing 1513. Since the electronic device selects the high priority path as the SIM2 RF path, the electronic device can perform a random access procedure through the high priority path. In FIG. 15, the operation of performing a random access procedure for a voice call is marked as “RACH using high priority path.” The electronic device may need to perform a random access procedure before the next DRX cycle 1119.

FIG. 16A is a diagram for explaining a transmission sharing (Tx sharing) operation according to an embodiment.

Figure 16b is a diagram for explaining a Tx sharing operation according to an embodiment.

16A and 16B, an electronic device (e.g., electronic device 101 in FIGS. 1A, 1B, 1C, 2A, 2B, 3A, 3B, or 3C) (e.g., FIG. 1A). Processor 120, communications processor 510 of FIG. 1C, first communications processor 212 or second communications processor 214 of FIG. 2A, or integrated communications processor 260 of FIG. 2B) uses SIM1. It is possible to connect to a first communication network and to a second communication network using SIM2. The electronic device may operate RF paths based on transmission sharing (Tx sharing).

According to one embodiment, the Tx sharing method may mean a method in which multiple bands share one transmission path in a situation where one transmission path and multiple reception paths are used. When an electronic device operates according to the Tx sharing method, scheduling times for simultaneous transmission operations in multiple bands may overlap. In this case, as shown in FIGS. 16A and 16B, the transmission path may be used for the SIM1/N1 band in the first time interval (1611), and the transmission path may be used for the SIM2/N3 band in the second time interval. It can be done (1651).

Figure 17 is a diagram for explaining a Tx sharing operation according to an embodiment.

Referring to Figure 17, an electronic device (e.g., the electronic device 101 of Figures 1A, 1B, 1C, 2A, 2B, 3A, 3B, or 3C) (e.g., the processor of Figure 1A ( 120), the communication processor 510 of FIG. 1C, the first communication processor 212 or the second communication processor 214 of FIG. 2A, or the integrated communication processor 260 of FIG. 2B) uses SIM1 to perform first communication You can connect to the network, and you can connect to the second communication network using SIM2. The electronic device may operate RF paths based on the Tx sharing method, as described in FIGS. 16A and 16B.

According to one embodiment, when an electronic device operates according to the Tx sharing method, scheduling times for simultaneous transmission operations in multiple bands may overlap. In this case, as shown in Figures 16a and 16b, the transmission path is used for the SIM1/N1 band in the first time section, and the transmission path is used for the SIM2/N3 band in the second time section, so that the RF path can be operated (1710).

However, if there is a band corresponding to the connection for a voice call, and a transmission path is needed for that band, the electronic device can always set the transmission path for that band preferentially compared to other bands. For example, if the SIM1/N1 band is a band corresponding to a connection for a voice call and the SIM2/N3 band is a band corresponding to a connection for a data call, even though the electronic device is operating according to the Tx sharing method, When a transmission path is needed in the SIM1/N1 band, the transmission path can always be preferentially assigned to the SIM1/N1 band (1720).

Even though the electronic device is operating according to the Tx sharing method, if the SIM1/N1 band is a band corresponding to a connection for a voice call and the SIM2/N3 band is a band corresponding to a connection for a data call, the Tx sharing operation is performed. You can also stop. In this case, the electronic device can only allocate a transmission path to the SIM1/N1 band, and since the transmission path is not assigned to the SIM2/N3 band, transmission operations related to data calls may be interrupted.

FIG. 18 is a diagram for explaining an operation of selecting an RF path related to a call signal indicating a voice call, according to an embodiment.

Referring to Figure 18, an electronic device (e.g., the electronic device 101 of Figures 1A, 1B, 1C, 2A, 2B, 3A, 3B, or 3C) (e.g., the processor of Figure 1A ( 120), the communication processor 510 of FIG. 1C, the first communication processor 212 or the second communication processor 214 of FIG. 2A, or the integrated communication processor 260 of FIG. 2B) is described in FIGS. 5A and 5B. As shown, when the call signal is a call signal for a voice call, an RF path selection operation corresponding to the call signal for a voice call can be performed. According to one embodiment, a random access procedure needs to be performed in order to connect a voice call, and in order to increase (e.g., maximize) the probability of success for the random access procedure, the electronic device sets the first condition. Based on this, at least one RF path among all RF paths supportable by the electronic device can be selected as the RF path for the voice call. As described in FIGS. 5A and 5B, the first condition may include a condition in which the SAR margin is greater than or equal to the critical SAR margin. This may be described in detail as follows.

First, even for an RF path (e.g., a transmit path) whose path loss is less than the critical path loss, if the SAR margin is less than the critical SAR margin, that RF path may not be selected as the RF path associated with the SIM associated with the voice call. there is. In one embodiment, the case where the path loss is less than the critical path loss may include at least one of the following cases.

(1) When power is fully back-off due to SAR back-off

For example, if the maximum power (max power) is 23dBm and the average power limit (Plimit) is 20dBm, the corresponding RF path is operating at 17dBm due to power backoff (1815)

(2) When backoff to power is in progress due to SAR backoff

For example, if the max power is 23 dBm and the Plimit is 20 dBm, the power back-off has begun but has not yet been reduced to 17 dBm (e.g., the RF path in question has been reduced to 21 dBm due to the power back-off). (if in operation)(1813)

(3) When SAR back-off has not occurred, but is expected to occur within a threshold time (e.g., X seconds) when operating at the currently set power (1811)

The electronic device will not select an RF path (e.g., a transmit path) where the path loss is less than the critical path loss, as the RF path associated with the SIM associated with the voice call if the SAR margin is less than the critical SAR margin. By not doing so, an RF path with a relatively high TRP (e.g., a TRP greater than a threshold TRP) can be selected as the RF path associated with the SIM associated with the voice call.

According to one embodiment, when two transmission paths (e.g., transmission path 1 and transmission path 2) exist for each RAT/band, the electronic device can check the performance of each transmission path. According to one embodiment, when two transmission paths exist for each RAT/band, the electronic device can check the performance difference between the two transmission paths. As an example, the performance of transmission path 1 may be superior to the performance of transmission path 2. Since the performance of the transmission path may be similar or substantially the same as that described in FIG. 4, detailed description thereof will be omitted here.

The electronic device can check the maximum transmission power limit (MTPL) difference due to insufficient SAR margin compared to the performance difference between two transmission paths (e.g., transmission path 1 and transmission path 2). If the MTPL difference exceeds the performance difference between the two transmission paths, the electronic device will not select the transmission path whose SAR margin is less than the threshold SAR margin among the two transmission paths as the RF path associated with the SIM associated with the voice call. You can.

FIG. 19 is a diagram for explaining an operation of selecting an RF path related to a call signal indicating a voice call, according to an embodiment.

Referring to Figure 19, an electronic device (e.g., the electronic device 101 of Figures 1A, 1B, 1C, 2A, 2B, 3A, 3B, or 3C) (e.g., the processor of Figure 1A ( 120), the communication processor 510 of FIG. 1C, the first communication processor 212 or the second communication processor 214 of FIG. 2A, or the integrated communication processor 260 of FIG. 2B) uses SIM1 to perform first communication You can connect to the network, and you can connect to the second communication network using SIM2. In the first communication network, the electronic device may be in the RRC_CONNECTED state and may be receiving a data call. In the second communication network, the electronic device may be in the RRC_IDLE state.

As described in FIGS. 5A and 5B, when the electronic device receives a call signal indicating a voice call, it may perform an RF path selection operation corresponding to the call signal for the voice call. According to one embodiment, in order to connect a voice call, a random access procedure needs to be performed, and in order to increase (e.g., maximize) the probability of success for the random access procedure, the electronic device, Among all supportable RF paths, at least one RF path that satisfies the first condition can be selected as the SIM2 RF path. In one embodiment, the electronic device may not select the SIM1 transmission path as the SIM2 RF path if at least one RF path that satisfies the first condition (e.g., has maximum performance) includes the SIM1 transmission path. there is. For example, the electronic device may exclude the SIM1 transmission path from candidates for the SIM2 RF path, which may be to maintain the data call connection associated with SIM1.

As shown in FIG. 19, the electronic device may support carrier aggregation (CA) (B1 + B3) for bands B1 and B3. The tuner 1911 may include an aperture tuner and/or an impedance tuner, and may perform a tuning operation based on a set value (eg, tuning value) for the received signal. The signal tuned by the tuner 1911 may be output as a band B1 signal or a band B3 signal through a diplexer 1913.

If the RF path for the connection for a data call is a path corresponding to band B3, and the RF path corresponding to band B1 is selected as the SIM2 RF path for performing the random access procedure for a voice call, the tuner 1911 Antenna tuning operation can be performed based on the setting value for band B1. The signal tuned by the tuner 1911 may be output as a band B1 signal through the diplexer 1913. In this case, the probability that the random access procedure for the voice call will succeed can be increased, and thus the connection for the voice call can be stably established.

FIG. 20 is a diagram for explaining an operation of selecting an RF path related to a call signal indicating a voice call, according to an embodiment.

Referring to Figure 20, an electronic device (e.g., the electronic device 101 of Figures 1A, 1B, 1C, 2A, 2B, 3A, 3B, or 3C) (e.g., the processor of Figure 1A ( 120), the communication processor 510 of FIG. 1C, the first communication processor 212 or the second communication processor 214 of FIG. 2A, or the integrated communication processor 260 of FIG. 2B) uses SIM1 to perform first communication You can connect to the network, and you can connect to the second communication network using SIM2. In the first communication network, the electronic device may be in the RRC_CONNECTED state and may be receiving a data call. In the second communication network, the electronic device may be in the RRC_IDLE state.

As described in FIGS. 5A and 5B, when the electronic device receives a call signal indicating a voice call, it may perform an RF path selection operation corresponding to the call signal for the voice call. According to one embodiment, in order to connect a voice call, a random access procedure needs to be performed, and in order to increase (e.g., maximize) the probability of success for the random access procedure, the electronic device, Among all supportable RF paths, at least one RF path that satisfies the first condition can be selected as the SIM2 RF path.

As shown in FIG. 20, there are two adjacent antennas (e.g., an antenna connected to the tuner 2011 and an antenna connected to the tuner 2021), and the RF path associated with one of the antennas is SIM1 RF. one path (e.g. the RF path for data calls) (e.g. the path corresponding to band B7) and the other is the SIM2 RF path (e.g. the RF path for voice calls) (e.g. the path corresponding to band B1). ) can be set. In this case, the electronic device controls the SIM1 RF path and the SIM2 RF path separately, or controls the tuner 2011 and the tuner 2021 to reduce (e.g., minimize) interference between the SIM1 RF path and the SIM2 RF path. ) You can adjust the setting value (e.g. tuning value) applied to each (active detune).

FIG. 21 is a diagram for explaining an operation of selecting an RF path related to a call signal indicating a voice call, according to an embodiment.

Referring to Figure 21, an electronic device (e.g., the electronic device 101 of Figures 1A, 1B, 1C, 2A, 2B, 3A, 3B, or 3C) (e.g., the processor of Figure 1A ( 120), the communication processor 510 of FIG. 1C, the first communication processor 212 or the second communication processor 214 of FIG. 2A, or the integrated communication processor 260 of FIG. 2B) uses SIM1 to perform first communication You can connect to the network, and you can connect to the second communication network using SIM2. In the first communication network, the electronic device may be in the RRC_CONNECTED state and may be receiving a data call. In the second communication network, the electronic device may be in the RRC_IDLE state.

As described in FIGS. 5A and 5B, when the electronic device receives a call signal indicating a voice call, it may perform an RF path selection operation corresponding to the call signal for the voice call. According to one embodiment, in order to connect a voice call, a random access procedure needs to be performed, and in order to increase (e.g., maximize) the probability of success for the random access procedure, the electronic device, Among all supportable RF paths, at least one RF path that satisfies the first condition can be selected as the SIM2 RF path.

As shown in FIG. 21, there are two adjacent antennas (e.g., an antenna connected to the tuner 2111 and an antenna connected to the tuner 2121), and the RF path associated with one of the antennas is SIM1 RF. one path (e.g. the RF path for a data call) (e.g. the path corresponding to band B7) and one SIM2 RF path (e.g. the RF path for a voice call) (e.g. the path corresponding to band B1) ) can be set. In this case, the electronics configure settings applied to the tuner 2121 (e.g., to increase isolation) to improve (e.g., maximize) the performance of the SIM2 RF path (e.g., to increase isolation). Tuning value) can be adjusted (detune).

FIG. 22 is a diagram illustrating an operation of selecting an RF path for a voice call in an RF circuit according to an embodiment.

Referring to FIG. 22, the RF circuit (e.g., the RF circuit 520 in FIG. 1C) includes a transceiver 400, a plurality of LFEMs (411, 415, 419, 425), and a plurality of LPAMIDs (413, 417, 421). , 423), and/or may include a plurality of antennas (eg, antennas 1 to 9). The structure of the RF circuit shown in FIG. 22 can be implemented in the same way as described in FIG. 7, and therefore its detailed description will be omitted here.

While operating in the RRC_CONNECTED state in the first communication network, when the electronic device receives a call signal indicating a voice call from the second communication network operating in the RRC_IDLE state, the electronic device connects all RF paths supportable by the electronic device. It may be necessary to select at least one of the RF paths that satisfy the first condition as the SIM2 RF path. According to one embodiment, the SIM1 RF path may correspond to band N1, the SIM2 RF path may correspond to band N3, and thus both the SIM1 RF path and the SIM2 RF path may correspond to MB.

In Figure 22, the RF paths corresponding to band N1 are RF path 1 corresponding to antenna 1 and the third LPAMID (421), RF path 3 corresponding to antenna 3 and the fourth LFEM (425), and antenna 5 and the first LFEM. It includes RF path 5 corresponding to (411), and RF path 6 corresponding to antenna 6 and the first LPAMID (413), and when RF paths corresponding to band N1 are listed in order of performance, the order is RF path 1 , RF path 6, RF path 5, and RF path 3 are assumed. In Figure 22, the performance of the transmit path is superior to the performance of the receive path, and the performance of the RF path corresponding to the antenna disposed at the top of the electronic device and the RFEE is superior to the performance of the RF path corresponding to the antenna disposed at the bottom of the electronic device and the RFEE. Let's assume that the performance of the RF path is excellent. Therefore, if the RF paths corresponding to band N1 are listed in order of performance, the order may be RF path 1, RF path 6, RF path 5, and RF path 3. In Figure 22, SIM1 RF paths are marked “sim1”.

FIG. 23 is a diagram illustrating an operation of selecting an RF path for a voice call in an RF circuit according to an embodiment.

Referring to FIG. 23, the RF circuit (e.g., the RF circuit 520 in FIG. 1C) includes a transceiver 400, a plurality of LFEMs (411, 415, 419, 425), and a plurality of LPAMIDs (413, 417, 421). , 423), and/or may include a plurality of antennas (eg, antennas 1 to 9). The structure of the RF circuit shown in FIG. 23 can be implemented in the same way as described in FIG. 7, and therefore its detailed description will be omitted here.

As described in FIG. 22, while RF path 1, RF path 3, RF path 5, and RF path 6 are being used as SIM1 RF paths, the electronic device is operating in the RRC_IDLE state in the second communication network and is therefore connected to the second communication network. You can perform call monitoring operations. As illustrated in FIG. 22, the SIM2 RF path may correspond to band N3, and therefore both the SIM1 RF path and the SIM2 RF path may correspond to MB. However, the RF paths already available for band N3 (e.g., RF path 1 corresponding to antenna 1 and the third LPAMID 421, RF path 3 corresponding to antenna 3 and the fourth LFEM 425, antenna 5 and Since the RF path 5 corresponding to the first LFEM 411 and the RF path 6 corresponding to the antenna 6 and the first LPAMID 413 are used as the SIM1 RF path, the electronic device uses the lowest priority RF path 9 A call monitoring operation for the second communication network can be performed. RF path 9 may be a path corresponding to antenna 9 and the third LFEM 419, and RF path 9 may be a SIM2 RF path. In Figure 23, SIM1 RF paths are marked “sim1” and SIM2 RF paths are marked “sim2”.

FIG. 24 is a diagram illustrating an operation of selecting an RF path for a voice call in an RF circuit according to an embodiment.

Referring to FIG. 24, the RF circuit (e.g., the RF circuit 520 in FIG. 1C) includes a transceiver 400, a plurality of LFEMs (411, 415, 419, 425), and a plurality of LPAMIDs (413, 417, 421). , 423), and/or may include a plurality of antennas (eg, antennas 1 to 9). The structure of the RF circuit shown in FIG. 24 can be implemented in the same way as described in FIG. 7, and therefore its detailed description will be omitted here.

As described in FIG. 23, while RF path 1, RF path 3, RF path 5, and RF path 6 are being used as SIM1 RF paths, the electronic device performs a call monitoring operation for the second communication network through RF path 9. can do. The electronic device can confirm that a call targeting the electronic device exists through a call monitoring operation.

When the electronic device receives a call signal targeting the electronic device, it can perform a random access procedure, and in this case, RF path 6 and RF path 3 can be selected as the SIM2 RF path.

If the random access procedure is successful, the electronic device can operate in the RRC_CONNECTED state for the second communication network. As the electronic device operates in the RRC_CONNECTED state for the second communication network, it can use RF path 1 and RF path 5 in the RRC_CONNECTED state for the first communication network. RF path 1 may be a SIM1 transmit path and a SIM1 receive path, and RF path 5 may be a SIM1 receive path. RF path 6 may be a SIM2 transmit path and a SIM2 receive path, and RF path 3 may be a SIM2 receive path. Accordingly, the operation in RF path 1, RF path 3, RF path 5, and RF path 6 may be similar to the operation when N1+N3 CA is applied.

In Figure 24, SIM1 RF paths are marked “sim1” and SIM2 RF paths are marked “sim2”.

FIG. 25 is a diagram illustrating an operation of selecting an RF path for a voice call in an RF circuit according to an embodiment.

Referring to FIG. 25, an RF circuit (e.g., RF circuit 520 in FIG. 1C) includes a transceiver 400, a plurality of LFEMs (411, 415, 419, 425), and a plurality of LPAMIDs (413, 417, 421). , 423), and/or may include a plurality of antennas (eg, antennas 1 to 9). The structure of the RF circuit shown in FIG. 25 can be implemented in the same way as described in FIG. 7, and therefore its detailed description will be omitted here.

As described in FIG. 23, while RF path 1, RF path 3, RF path 5, and RF path 6 are being used as SIM1 RF paths, the electronic device performs a call monitoring operation for the second communication network through RF path 9. can do. Through a call monitoring operation, the electronic device may receive a call signal including a call cause indicating that it is a voice call.

The electronic device that confirms the existence of a voice call targeting the electronic device may select at least one of all RF paths included in the electronic device that satisfies the first condition as the SIM2 RF path. Accordingly, as shown in FIG. 25, RF path 1 and RF path 5 may be selected as the SIM2 RF path, and RF path 3 and RF path 6 may be selected as the SIM1 RF path. RF path 1 may be a SIM2 transmit path and a SIM2 receive path, and RF path 5 may be a SIM2 receive path. RF path 6 may be a SIM1 transmit path and a SIM1 receive path, and RF path 3 may be a SIM1 receive path. The electronic device can perform the random access procedure through RF path 1 and RF path 5 with better performance, thereby increasing the probability of a successful random access procedure. In one embodiment, the operation in RF path 1, RF path 3, RF path 5, and RF path 6 may be similar to the operation when N3+N1 CA is applied.

Despite performing the random access procedure over the better performing RF path 1 and RF path 5, the random access procedure may fail, in which case the electronic device may increase the number of SIM2 RF paths.

FIG. 26 is a diagram for explaining an operation of selecting an RF path for a voice call in an RF circuit according to an embodiment.

Referring to FIG. 26, the RF circuit (e.g., the RF circuit 520 in FIG. 1C) includes a transceiver 400, a plurality of LFEMs (411, 415, 419, 425), and a plurality of LPAMIDs (413, 417, 421). , 423), and/or may include a plurality of antennas (eg, antennas 1 to 9). The structure of the RF circuit shown in FIG. 26 can be implemented in the same way as described in FIG. 7, and therefore its detailed description will be omitted here.

As described in FIG. 25, while RF path 1, RF path 3, RF path 5, and RF path 6 are being used as SIM1 RF paths, the electronic device performs a call monitoring operation for the second communication network through RF path 9. can do. Through a call monitoring operation, the electronic device may receive a call signal including a call cause indicating that it is a voice call.

The electronic device that confirms the existence of a voice call targeting the electronic device may select at least one of all RF paths included in the electronic device that satisfies the first condition as the SIM2 RF path. Accordingly, as shown in FIG. 25, RF path 1 and RF path 5 may be selected as the SIM2 RF path, and RF path 3 and RF path 6 may be selected as the SIM1 RF path.

The electronic device may fail the random access procedure despite performing it through the better performing RF path 1 and RF path 5, in which case the electronic device may increase the number of SIM2 RF paths. To maintain a data call connection in the first network, the electronic device may use only RF path 6 as the SIM1 RF path and set RF path 3 and RF path 9 as the new SIM2 RF path. In this case, the electronics may use RF path 1, RF path 3, RF path 5, and RF path 9 as SIM2 RF, and use RF path 1, RF path 3, RF path 5, and RF path 9 to 2 Can perform random access procedures on communication networks.

According to an embodiment of the present disclosure, a method of operating an electronic device (e.g., the electronic device 101 of FIGS. 1A, 1B, 1C, 2A, 2B, 3A, 3B, or 3C) includes: Includes an operation 511 of receiving a call signal from a second communication network (e.g., the second communication network 112a of FIG. 1B) in a radio resource control (RRC) idle (RRC_IDLE) state. can do.

According to an embodiment of the present disclosure, the operating method may further include an operation 513 of checking whether the calling signal is a calling signal for a voice call.

According to an embodiment of the present disclosure, the operating method includes, based on the fact that the calling signal is a calling signal for the voice call, the electronic device (e.g., FIGS. 1A, 1B, 1C, 2A, 2B) , a second subscriber identity module that satisfies the first condition among a plurality of radio frequency (RF) paths supportable by the electronic device 101 of FIG. 3A, FIG. 3B, or FIG. 3C). It may further include an operation 517 of selecting at least one RF path related to a SIM (e.g., the second SIM 112 of FIG. 1B or FIG. 1C).

According to an embodiment of the present disclosure, the operating method includes random access to the second communication network (e.g., the second communication network 112a of FIG. 1B) through the selected at least one RF path. ) may further include an operation 519 for performing the procedure.

According to an embodiment of the present disclosure, the second SIM (e.g., the second SIM 112 in FIG. 1B or 1C) is connected to a second communication network (e.g., the second communication network 112a in FIG. 1B). The first SIM (e.g., the first SIM 111 in FIG. 1B or 1C) may be used to connect to the first communication network (e.g., the first communication network 111a in FIG. 1B). .

According to an embodiment of the present disclosure, the operating method includes an RF path in which at least one of the selected at least one RF path is related to the first SIM (e.g., the first SIM 111 of FIG. 1B or FIG. 1C) It may further include an operation to check whether it is being used.

According to an embodiment of the present disclosure, the operating method includes an RF path in which at least one of the selected at least one RF path is related to the first SIM (e.g., the first SIM 111 of FIG. 1B or FIG. 1C) Based on the fact that the at least one RF path being used as an RF path related to the first SIM (e.g., the first SIM 111 of FIG. 1B or FIG. 1C) is selected from among the plurality of RF paths. An operation of changing to at least one of RF paths other than the selected at least one RF path and RF paths currently being used as a transmission RF path associated with the first SIM (e.g., the first SIM 111 of FIG. 1B or FIG. 1C) It may further include.

According to an embodiment of the present disclosure, the operating method may further include checking whether the random access procedure is successful.

According to an embodiment of the present disclosure, the operating method includes at least one device associated with the second SIM (e.g., the second SIM 112 of FIG. 1B or FIG. 1C) based on the random access procedure failing. An operation of additionally selecting an RF path may be further included.

According to an embodiment of the present disclosure, the operating method includes the second communication network (e.g., the second communication network 112a in FIG. 1B) through the selected at least one RF path and the additionally selected at least one path. It may further include performing the random access procedure for .

According to an embodiment of the present disclosure, the operating method may further include checking whether the random access procedure is successful.

According to an embodiment of the present disclosure, the operating method includes at least one device associated with the second SIM (e.g., the second SIM 112 of FIG. 1B or FIG. 1C) based on the success of the random access procedure. The operation of maintaining the RF path may further be included.

According to an embodiment of the present disclosure, the operation of selecting at least one RF path associated with the second SIM (e.g., the second SIM 112 of FIG. 1B or FIG. 1C) includes the call signal being connected to the voice call. Based on the call signal for, before selecting at least one RF path associated with the second SIM (e.g., the second SIM 112 of FIG. 1B or FIG. 1C), determine whether a second condition is satisfied. May include confirmation actions.

According to an embodiment of the present disclosure, the operation of selecting at least one RF path associated with the second SIM (e.g., the second SIM 112 of FIG. 1B or FIG. 1C) is performed when the second condition is satisfied. Based on this, the operation of selecting at least one RF path related to the second SIM (eg, the second SIM 112 of FIG. 1B or FIG. 1C) may be further included.

According to an embodiment of the present disclosure, the second condition includes at least one of a condition in which the received signal strength of the call signal is less than a critical reception strength, or a condition in which the transmission power applied to the random access procedure is more than the threshold transmission power. can do.

According to an embodiment of the present disclosure, the first condition is a condition in which the average power limit is greater than the average power limit of other RF transmission paths, a condition in which the antenna loss is less than the threshold loss, and RFEE internal It may include at least one of a condition in which the path loss is less than the critical path loss, or a condition in which the specific absorption rate (SAR) margin is more than the critical SAR margin.

According to an embodiment of the present disclosure, the operating method is RRC connected in the second communication network (e.g., the second communication network 112a of FIG. 1B) based on success in the random access procedure. : RRC_CONNECTED) state, the operation of providing the voice call through the selected at least one RF path may be further included.

According to an embodiment of the present disclosure, the operating method includes, while the voice call is being provided, the second SIM (e.g., the second SIM 112 in FIG. 1B or 1C) based on a third condition being satisfied. An operation of additionally selecting at least one RF path related to may be further included.

According to an embodiment of the present disclosure, the operating method may further include providing the voice call through the selected at least one RF path and the additionally selected at least one path.

According to an embodiment of the present disclosure, the third condition may include a condition in which the received signal strength of the signal through which the voice call is provided is less than the threshold received signal strength.

According to an embodiment of the present disclosure, the electronic device (e.g., FIGS. 1A, 1B, 1C, 2A, 2B, The electronic device 101 of FIGS. 3A, 3B, or 3C may be in an RRC connected (RRC_CONNECTED) state.

Claims (20)

In the electronic device 101,
A plurality of radio frequency front ends (RFFEs) (411; 413; 415; 417; 419; 421; 423; 425), a radio frequency comprising a plurality of antennas connected to the plurality of RFFEs ( radio frequency (RF) circuit 520; and
At least one communication processor (120; 212; 214; 260; 510) operably coupled to the RF circuit,
The at least one communication processor includes a first subscriber identity module (SIM) 111 used to connect to the first communication network 111a and a second subscriber identity module (SIM) 111 used to connect to the second communication network 112a. Connected to the second SIM 112,
The at least one communication processor:
In a radio resource control (RRC) idle (RRC_IDLE) state, the RF circuit is controlled to receive a call signal from the second communication network,
Check whether the calling signal is a calling signal for a voice call,
Based on the fact that the calling signal is a calling signal for the voice call, select at least one RF path associated with the second SIM that satisfies a first condition among a plurality of RF paths supportable by the electronic device, and , and
The electronic device configured to control the RF circuit to perform a random access procedure to the second communication network via the selected at least one RF path.
According to paragraph 1,
The at least one processor:
Check whether at least one of the selected at least one RF path is being used as an RF path associated with the first SIM, and
Based on at least one of the selected at least one RF path being used as an RF path associated with the first SIM, the at least one RF path being used as an RF path associated with the first SIM, the plurality of The electronic device is further configured to change to at least one of RF paths other than the selected at least one RF path and RF paths being used as a transmission RF path associated with the first SIM.
According to claim 1 or 2,
The at least one processor:
Check whether the random access procedure was successful,
Based on the random access procedure failing, additionally select at least one RF path associated with the second SIM, and
The electronic device is further configured to control the RF circuit to perform the random access procedure to the second communication network via the selected at least one RF path and the additionally selected at least one path.
According to any one of claims 1 to 3,
The at least one processor:
Check whether the random access procedure was successful, and
The electronic device is further configured to maintain at least one RF path associated with the second SIM based on the random access procedure being successful.
According to any one of claims 1 to 4,
The at least one processor:
Based on the interrogation signal being for the voice call, before selecting at least one RF path associated with the second SIM, check whether a second condition is satisfied, and
The electronic device is configured to select at least one RF path associated with the second SIM, based on the second condition being satisfied.
According to clause 5,
The second condition is:
The electronic device comprising at least one of a condition in which the received signal strength of the call signal is less than a threshold reception strength, or a condition in which the transmission power applied to the random access procedure is more than the threshold transmission power.
According to any one of claims 1 to 5,
The first condition is:
A condition in which the average power limit is greater than the average power limit of other RF transmission paths, a condition in which the antenna loss is less than a critical loss, a condition in which the RFEE internal path loss is less than the critical path loss, or specific absorption. The electronic device includes at least one of the following conditions: a rate: SAR margin is greater than or equal to a critical SAR margin.
According to any one of paragraphs 1, 2, and 7,
The at least one processor:
Based on the random access procedure being successful, controlling the RF circuit to provide the voice call through the selected at least one RF path in an RRC connected (RRC_CONNECTED) state in the second communication network,
While the voice call is being provided, additionally select at least one RF path associated with the second SIM based on a third condition being satisfied, and
The electronic device further configured to control the RF circuit to provide the voice call via the selected at least one RF path and the additionally selected at least one path.
According to clause 8,
The third condition above is:
The electronic device comprising a condition in which the received signal strength of the signal from which the voice call is provided is less than a threshold received signal strength.
According to any one of claims 1 to 9,
The electronic device is in an RRC connected (RRC_CONNECTED) state in the first communication network.
In the method of operating the electronic device 101,
An operation 511 of receiving a call signal from a second communication network in a radio resource control (RRC) idle (RRC_IDLE) state;
Operation 513 of checking whether the calling signal is a calling signal for a voice call (513);
Based on the fact that the calling signal is a calling signal for the voice call, a second subscriber identity module (subscriber identity) that satisfies the first condition among a plurality of radio frequency (RF) paths supportable by the electronic device an operation 517 of selecting at least one RF path associated with a module: SIM) 112; and
An operation 519 of performing a random access procedure for the second communication network via the selected at least one RF path,
The operating method according to claim 1, wherein the second SIM is used to connect to a second communication network (112a), and the first SIM is used to connect to a first communication network (111a).
According to clause 11,
determining whether at least one of the selected at least one RF path is being used as an RF path associated with the first SIM; and
Based on at least one of the selected at least one RF path being used as an RF path associated with the first SIM, the at least one RF path being used as an RF path associated with the first SIM, the plurality of The operating method further comprising changing to at least one of RF paths other than the selected at least one RF path and RF paths being used as a transmission RF path associated with the first SIM.
According to claim 11 or 12,
Checking whether the random access procedure was successful;
based on the random access procedure failing, additionally selecting at least one RF path associated with the second SIM; and
The method of operation further comprising performing the random access procedure for the second communication network via the selected at least one RF path and the additionally selected at least one path.
According to any one of claims 11 to 13,
Checking whether the random access procedure was successful; and
The method of operation further comprising maintaining at least one RF path associated with the second SIM based on the random access procedure being successful.
According to any one of claims 11 to 14,
The operation of selecting at least one RF path associated with the second SIM is:
determining whether a second condition is satisfied before selecting at least one RF path associated with the second SIM, based on the calling signal being a calling signal for the voice call; and
The method of operation comprising selecting at least one RF path associated with the second SIM based on the second condition being satisfied.
According to clause 15,
The second condition is:
The operating method comprising at least one of a condition in which the received signal strength of the call signal is less than a critical reception strength, or a condition in which the transmission power applied to the random access procedure is more than the threshold transmission power.
According to any one of claims 11 to 15,
The first condition is:
A condition in which the average power limit is greater than the average power limit of other RF transmission paths, a condition in which the antenna loss is less than a critical loss, a condition in which the RFEE internal path loss is less than the critical path loss, or specific absorption. The operating method including at least one of the following conditions: a rate: SAR margin is greater than or equal to a critical SAR margin.
According to any one of claims 11, 12, and 17,
Based on the random access procedure being successful, providing the voice call through the selected at least one RF path in an RRC connected (RRC_CONNECTED) state in the second communication network;
While the voice call is being provided, additionally selecting at least one RF path associated with the second SIM based on a third condition being satisfied; and
The operating method further includes providing the voice call through the selected at least one RF path and the additionally selected at least one path.
According to clause 18,
The third condition above is:
The operating method comprising a condition that the received signal strength of the signal from which the voice call is provided is less than the threshold received signal strength.
According to any one of claims 11 to 19,
The operating method in which the electronic device is in an RRC connected (RRC_CONNECTED) state in the first communication network.

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