Electronic device for wireless communication by using plurality of antennas, and operation method thereof

Abstract

An embodiment of the present disclosure relates to a device and method for wireless communication by using a plurality of antennas in an electronic device. The electronic device comprises a plurality of antennas, a communication circuit, a processor, and a memory. The memory, when activated by the processor, allows the electronic device to: check the channel state of the electronic device by using the channel state of a first antenna set as a transmission antenna related to a frequency band of a first cell detected by scanning and the channel state of a second antenna among a plurality of antennas when it is determined that the transmission antenna related to the frequency band of the first cell can be switched; checking the channel state of the electronic device by using the channel state of the first antenna if the switching of the transmission antenna is determined to be limited; and performing an RACH procedure with the first cell if the channel state of the electronic device satisfies a designated RACH condition. Other embodiments may also be possible.

Description

Electronic device for performing wireless communication using multiple antennas and its operating method

[0001] Embodiments of the present disclosure relate to a device and method for performing wireless communication using a plurality of antennas in an electronic device.

[0002] An electronic device may perform wireless communication with an external electronic device via multiple antennas. The electronic device may include multiple antennas (e.g., antenna structures or antenna modules) to satisfy a user's desired communication quality (e.g., throughput) through wireless communication or to support a relatively wide frequency band of wireless communication. For example, the wireless communication may include at least one of long term evolution (LTE) communication or 5G communication (or new radio (NR) communication).

[0003] The above information may be provided as background art to aid in understanding the present disclosure. No claim or determination is made as to whether any of the above-described matters constitute prior art related to the present disclosure.

[0004] When the electronic device uses multiple antennas, it may include a first antenna (e.g., a PRx (primary receive) antenna) that transmits or receives at least one of a signal or data and at least one second antenna (e.g., a DRx (diversity receive) antenna) that receives at least one of a signal or data.

[0005] The electronic device may perform a measurement report based on the channel state of the second antenna when the channel state (or reception performance) (e.g., reference signal received power (RSRP)) of the second antenna is better than the channel state of the first antenna (e.g., imbalance state).

[0006] The electronic device may fail the RACH procedure or cause a radio link failure (RLF) due to a difference in channel conditions between the second antenna used for measurement reporting and the first antenna used for performing the RACH procedure when transmission of at least one signal or data using the second antenna is restricted.

[0007] Embodiments of the present disclosure disclose devices and methods for measurement reporting in an electronic device having a plurality of antennas.

[0008] Embodiments of the present disclosure disclose an apparatus and method for performing a RACH procedure in an electronic device having a plurality of antennas.

[0009] Embodiments of the present disclosure disclose devices and methods for performing cell reselection in an electronic device having a plurality of antennas.

[0010] The technical problems to be achieved in this document are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present disclosure belongs from the description below.

[0011] According to one embodiment, an electronic device may include a plurality of antennas, a communication circuit, a processor, and a memory. According to one embodiment, the memory may store instructions, when executed by the processor, for the electronic device to determine whether switching of a transmission antenna associated with a frequency band of the first cell is possible when the first cell is detected through a scan. According to one embodiment, the memory may store instructions, when executed by the processor, for the electronic device to determine whether switching of a transmission antenna associated with a frequency band of the first cell is possible using a channel state of the first cell measured through a first antenna configured as a transmission antenna associated with the frequency band of the first cell among the plurality of antennas and a channel state of the first cell measured through a second antenna different from the first antenna. According to one embodiment, the memory may store instructions, when executed by the processor, for the electronic device to determine a channel state of the first cell measured through the first antenna when the electronic device determines that switching of the transmission antenna is limited. According to one embodiment, the memory may store instructions that, when executed by a processor, cause the electronic device to perform a RACH procedure with the first cell by using a first antenna or a second antenna used to determine a channel state of the first cell measured by the electronic device as a transmit antenna associated with a frequency band of the first cell, if the channel state of the first cell measured by the electronic device satisfies a specified random access channel (RACH) condition or a specified cell selection condition.

[0012] According to one embodiment, an operating method of an electronic device having a plurality of antennas may include an operation of checking whether switching of a transmission antenna related to a frequency band of the first cell is possible when a first cell is detected through a scan. According to one embodiment, the operating method of the electronic device may include an operation of checking a channel state of the first cell measured by the electronic device using a channel state of the first cell measured through a first antenna set as a transmission antenna related to a frequency band of the first cell among the plurality of antennas and a channel state of the first cell measured through a second antenna different from the first antenna, when it is determined that switching of the transmission antenna is limited. According to one embodiment, the operating method of the electronic device may include an operation of checking a channel state of the first cell measured by the electronic device using the channel state of the first cell measured through the first antenna. According to one embodiment, an operating method of an electronic device may include an operation of performing a RACH procedure with a first cell by using a first antenna or a second antenna used to determine a channel state of the first cell measured by the electronic device as a transmission antenna related to a frequency band of the first cell, when the channel state of the first cell measured by the electronic device satisfies a specified random access channel (RACH) condition or a specified cell selection condition.

[0013] According to one embodiment, a non-transitory computer-readable storage medium (or computer program product) storing one or more programs may be described. According to one embodiment, one or more programs, when executed by at least one processor of an electronic device, when a first cell is detected through a scan, an operation of checking whether a transmission antenna related to a frequency band of the first cell can be switched; when it is determined that the switching of the transmission antenna is possible, an operation of checking a channel state of the first cell measured in the electronic device using a channel state of the first cell measured through a first antenna set as a transmission antenna related to the frequency band of the first cell among the plurality of antennas and a channel state of the first cell measured through a second antenna different from the first antenna; when it is determined that the switching of the transmission antenna is limited, an operation of checking a channel state of the first cell measured in the electronic device using the channel state of the first cell measured through the first antenna; and when the channel state of the first cell measured in the electronic device satisfies a designated random access channel (RACH) condition or a designated cell selection condition, an operation of determining a channel state of the first cell measured in the electronic device using the first antenna or the The instruction may include an operation for performing a RACH procedure with the first cell by using the second antenna as a transmit antenna related to the frequency band of the first cell.

[0014] According to an exemplary embodiment of the present disclosure, an electronic device including a plurality of antennas can reduce the probability of failure of a random access channel (RACH) procedure or the probability of occurrence of a radio link failure (RLF) by adaptively using the antennas to determine a channel state of the electronic device based on whether a transmitting antenna is switchable.

[0015] According to one embodiment, an electronic device including a plurality of antennas can reduce the number of cell searches related to cell reselection, limit unnecessary cell reselection, and connect to a cell with relatively low path loss through cell reselection by adaptively using the antennas to determine a channel state of the electronic device based on whether a transmission antenna can be switched in an RRC (radio resource control) idle state or an RRC inactive state.

[0016] In addition, various effects may be provided, either directly or indirectly, through this document.

[0017] The effects that can be obtained from the present disclosure are not limited to the effects mentioned above, and other effects that are not mentioned can be clearly understood by a person having ordinary skill in the art to which the present disclosure belongs from the description below.

[0018] In connection with the description of the drawings, the same or similar reference numerals may be used for the same or similar components.

[0019] FIG. 1 is a block diagram of an electronic device within a network environment according to one embodiment.

[0020] FIG. 2 is a front perspective view of an electronic device according to one embodiment.

[0021] FIG. 3 is a block diagram of an electronic device having a plurality of antennas according to one embodiment.

[0022] FIG. 4 is a block diagram of an electronic device for switching an antenna according to one embodiment.

[0023] FIG. 5 is a block diagram of an electronic device for switching an antenna according to one embodiment.

[0024] FIG. 6 is a flowchart for performing a RACH procedure in an electronic device according to one embodiment.

[0025] FIG. 7 is a flowchart for selectively performing a RACH procedure in an electronic device according to one embodiment.

[0026] FIG. 8 is a flowchart for measurement reporting in an electronic device according to one embodiment.

[0027] FIG. 9 is a flowchart for cell reselection in an electronic device according to one embodiment.

[0028] FIG. 10 is a flowchart for checking the channel status of a cell in an electronic device according to one embodiment.

[0029] The following examples are described in detail with reference to the attached drawings.

[0030] FIG. 1 is a block diagram of an electronic device (101) within a network environment (100) according to one embodiment. Referring to FIG. 1, in the network environment (100), the electronic device (101) may communicate with the electronic device (102) via a first network (198) (e.g., a short-range wireless communication network), or may communicate with at least one of the electronic device (104) or the server (108) via a second network (199) (e.g., a long-range wireless communication network). According to one embodiment, the electronic device (101) may communicate with the electronic device (104) via the server (108). According to one embodiment, the electronic device (101) may include a processor (120), a memory (130), an input module (150), an audio output module (155), a display module (160), an audio module (170), a sensor module (176), an interface (177), a connection terminal (178), a haptic module (179), a camera module (180), a power management module (188), a battery (189), a communication module (190), a subscriber identification module (196), or an antenna module (197). In some embodiments, the electronic device (101) may omit at least one of these components (e.g., the connection terminal (178)), or may have one or more other components added. In some embodiments, some of these components (e.g., the sensor module (176), the camera module (180), or the antenna module (197)) may be integrated into one component (e.g., the display module (160)).

[0031] The processor (120) may, for example, execute software (e.g., a program (140)) to control at least one other component (e.g., a hardware or software component) of the electronic device (101) connected to the processor (120) and perform various data processing or calculations. According to one embodiment, as at least a part of the data processing or calculations, the processor (120) may store commands or data received from other components (e.g., a sensor module (176) or a communication module (190)) in a volatile memory (132), process the commands or data stored in the volatile memory (132), and store result data in a non-volatile memory (134). According to one embodiment, the processor (120) may include a main processor (121) (e.g., a central processing unit or an application processor) or a secondary processor (123) (e.g., a graphics processing unit, a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor)) that can operate independently or together therewith. For example, if the electronic device (101) includes a main processor (121) and a secondary processor (123), the secondary processor (123) may be configured to use less power than the main processor (121) or to be specialized for a specified function. The secondary processor (123) may be implemented separately from the main processor (121) or as a part thereof.

[0032] The auxiliary processor (123) may control at least a portion of functions or states associated with at least one component (e.g., a display module (160), a sensor module (176), or a communication module (190)) of the electronic device (101), for example, on behalf of the main processor (121) while the main processor (121) is in an inactive (e.g., sleep) state, or together with the main processor (121) while the main processor (121) is in an active (e.g., application execution) state. In one embodiment, the auxiliary processor (123) (e.g., an image signal processor or a communication processor) may be implemented as a part of another functionally related component (e.g., a camera module (180) or a communication module (190)). In one embodiment, the auxiliary processor (123) (e.g., a neural network processing unit) may include a hardware structure specialized for processing artificial intelligence models. The artificial intelligence models may be generated through machine learning. This learning can be performed, for example, on the electronic device (101) itself where the artificial intelligence model is executed, or can be performed through a separate server (e.g., server (108)). The learning algorithm can include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but is not limited to the examples described above. The artificial intelligence model can include multiple artificial neural network layers.The artificial neural network may be one of, but is not limited to, a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted Boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), a deep Q-network, or a combination of two or more thereof. In addition to, or alternatively to, a hardware structure, an artificial intelligence model may also include a software structure.

[0033] The memory (130) can store various data used by at least one component (e.g., processor (120) or sensor module (176)) of the electronic device (101). The data can include, for example, software (e.g., program (140)) and input data or output data for commands related thereto. The memory (130) can include volatile memory (132) or non-volatile memory (134).

[0034] The program (140) may be stored as software in the memory (130) and may include, for example, an operating system (142), middleware (144), or an application (146).

[0035] The input module (150) can receive commands or data to be used in a component of the electronic device (101) (e.g., a processor (120)) from an external source (e.g., a user) of the electronic device (101). The input module (150) can include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., a stylus pen).

[0036] The audio output module (155) can output audio signals to the outside of the electronic device (101). The audio output module (155) can include, for example, a speaker or a receiver. The speaker can be used for general purposes, such as multimedia playback or recording playback. The receiver can be used to receive incoming calls. In one embodiment, the receiver can be implemented separately from the speaker or as part of the speaker.

[0037] The display module (160) can visually provide information to an external party (e.g., a user) of the electronic device (101). The display module (160) may include, for example, a display, a holographic device, or a projector and a control circuit for controlling the device. In 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 a force generated by a touch.

[0038] The audio module (170) can convert sound into an electrical signal, or vice versa, convert an electrical signal into sound. According to one embodiment, the audio module (170) can acquire sound through the input module (150), output sound through the sound output module (155), or an external electronic device (e.g., electronic device (102)) (e.g., speaker or headphone) directly or wirelessly connected to the electronic device (101).

[0039] The sensor module (176) can detect the operating status (e.g., power or temperature) of the electronic device (101) or the external environmental status (e.g., user status) and generate an electrical signal or data value corresponding to the detected status. According to one embodiment, the sensor module (176) can include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

[0040] The interface (177) may support one or more designated protocols that may be used to directly or wirelessly connect the electronic device (101) with an external electronic device (e.g., the electronic device (102)). In 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.

[0041] The connection terminal (178) may include a connector through which the electronic device (101) may be physically connected to an external electronic device (e.g., 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 (e.g., a headphone connector).

[0042] A haptic module (179) can convert electrical signals into mechanical stimuli (e.g., vibration or movement) or electrical stimuli that a user can perceive through tactile or kinesthetic sensations. In one embodiment, the haptic module (179) can include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

[0043] The camera module (180) can capture still images and videos. According to one embodiment, the camera module (180) may include one or more lenses, image sensors, image signal processors, or flashes.

[0044] The power management module (188) can manage power supplied to the electronic device (101). According to one embodiment, the power management module (188) can be implemented, for example, as at least a part of a power management integrated circuit (PMIC).

[0045] A battery (189) may power at least one component of the electronic device (101). In one embodiment, the battery (189) may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

[0046] The communication module (190) may support the establishment of a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device (101) and an external electronic device (e.g., electronic device (102), electronic device (104), or server (108)), and the performance of communication through the established communication channel. The communication module (190) may operate independently from the processor (120) (e.g., 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) may include 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., a local area network (LAN) communication module, or a power line communication module). Among these communication modules, the corresponding communication module can communicate with an external electronic device (104) via a first network (198) (e.g., a short-range communication network such as Bluetooth, Bluetooth low energy (BLE), wireless fidelity (Wi-Fi) direct, or infrared data association (IrDA)) or a second network (199) (e.g., a long-range communication network such as a legacy cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a LAN or WAN)). These various types of communication modules can be integrated into a single component (e.g., a single chip) or implemented as a plurality of separate components (e.g., multiple chips). The wireless communication module (192) can verify or authenticate the electronic device (101) within a communication network such as the first network (198) or the second network (199) by using subscriber information (e.g., an international mobile subscriber identity (IMSI)) stored in the subscriber identification module (196).

[0047] The wireless communication module (192) can support 5G networks and next-generation communication technologies following the 4G network, for example, new radio access technology (NR). The NR access technology can support high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimizing terminal power and connecting multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low-latency communications)). The wireless communication module (192) can support, for example, a high-frequency band (e.g., mmWave band) to achieve a high data transmission rate (or throughput). The wireless communication module (192) can support various technologies for securing performance in a high-frequency band, such as beamforming, massive multiple-input and multiple-output (MIMO), full dimensional MIMO (FD-MIMO), array antenna, analog beam-forming, or large scale antenna. The wireless communication module (192) can support various requirements specified in the electronic device (101), an external electronic device (e.g., the electronic device (104)), or a network system (e.g., the second network (199)). According to one embodiment, the wireless communication module (192) can support a peak data rate (e.g., 20 Gbps or more) for eMBB realization, a loss coverage (e.g., 164 dB or less) for mMTC realization, or a U-plane latency (e.g., 0.5 ms or less for downlink (DL) and uplink (UL), or 1 ms or less for round trip) for URLLC realization.According to one embodiment, the subscriber identification module (196) may include multiple subscriber identification modules. For example, the multiple subscriber identification modules may store different subscriber identification information.

[0048] The antenna module (197) can transmit or receive signals or power to or from an external device (e.g., an external electronic device). In one embodiment, the antenna module (197) may include an antenna including a radiator formed of a conductor or a conductive pattern formed on a substrate (e.g., a PCB). In one embodiment, the antenna module (197) may include a plurality of antennas (e.g., 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), may be selected from the plurality of antennas by, for example, the communication module (190). A signal or power may be transmitted or received between the communication module (190) and an external electronic device through the selected at least one antenna. In some embodiments, in addition to the radiator, another component (e.g., a radio frequency integrated circuit (RFIC)) may be additionally formed as a part of the antenna module (197).

[0049] In one embodiment, the antenna module (197) may form a high-frequency (e.g., mmWave) antenna module. In one embodiment, the high-frequency (e.g., mmWave) antenna module may include a printed circuit board, an RFIC positioned on or adjacent a first side (e.g., a bottom side) of the printed circuit board and capable of supporting a designated high-frequency band (e.g., a mmWave band), and a plurality of antennas (e.g., an array antenna) positioned on or adjacent a second side (e.g., a top side or a side side) of the printed circuit board and capable of transmitting or receiving signals in the designated high-frequency band. For example, the plurality of antennas may include patch array antennas and / or dipole array antennas.

[0050] At least some of the components can be interconnected and exchange signals (e.g., commands or data) with each other via a communication method between peripheral devices (e.g., a bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)).

[0051] According to one embodiment, commands or data may be transmitted or received between the electronic device (101) and an external electronic device (104) via a server (108) connected to a second network (199). Each of the external electronic devices (102 or 104) may be the same or a different type of device as the electronic device (101). According to one embodiment, all or part of the operations executed in the electronic device (101) may be executed in one or more of the external electronic devices (102, 104, or 108). For example, when the electronic device (101) is 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, instead of or in addition to executing the function or service itself, request one or more external electronic devices to perform the function or at least a part of the service. One or more external electronic devices that receive the request may execute at least a portion 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 a portion of a response to the request. For this purpose, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used, for example. The electronic device (101) may provide an ultra-low latency service by using distributed computing or mobile edge computing, for example. In one embodiment, the external electronic device (104) may include an Internet of Things (IoT) device. The server (108) may be an intelligent server using machine learning and / or a neural network. According to one embodiment, the external electronic device (104) or the server (108) may be included in the second network (199).The electronic device (101) can be applied to intelligent services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology and IoT-related technology.

[0052] An electronic device according to an embodiment disclosed in this document may take various forms. The electronic device may include, for example, a portable communication device (e.g., a smartphone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance. The electronic device according to an embodiment of this document is not limited to the aforementioned devices.

[0053] It should be understood that the embodiments of this document and the terminology used herein are not intended to limit the technical features described in this document to a specific embodiment, but rather to encompass various modifications, equivalents, or substitutes of the embodiment. In connection with the description of the drawings, similar reference numerals 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 item, unless the context clearly indicates otherwise. In this document, each of the phrases "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 "at least one of A, B, or C" can include any one of the items listed together in the corresponding phrase among those phrases, or all possible combinations thereof. Terms such as "first," "second," or "first" or "second" may be used merely to distinguish one component from another, and do not limit the components in any other respect (e.g., importance or order). When a component (e.g., a first component) is referred to as "coupled" or "connected" to another (e.g., a second component), with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0054] The term "module" used in one embodiment of this document may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit. A module may be an integral component, or a minimum unit or part of such a component that performs one or more functions. For example, according to one embodiment, a module may be implemented in the form of an application-specific integrated circuit (ASIC).

[0055] An embodiment of the present document may be implemented as software (e.g., a program (140)) including one or more instructions stored in a storage medium (e.g., an internal memory (136) or an external memory (138)) readable by a machine (e.g., an electronic device (101)). For example, a processor (e.g., a processor (120)) of the machine (e.g., an electronic device (101)) may call at least one instruction among the one or more instructions stored from the storage medium and execute it. This enables the machine to operate to perform at least one function according to the at least one called instruction. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' simply means that the storage medium is a tangible device and does not contain signals (e.g., electromagnetic waves), and the term does not distinguish between cases where data is stored semi-permanently or temporarily on the storage medium.

[0056] A method according to one embodiment disclosed in this document may be provided as a computer program product. The computer program product may be traded as a product between a seller and a buyer. 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 may be distributed online (e.g., downloaded or uploaded) via an application store (e.g., Play Store™) or directly between two user devices (e.g., smart phones). In the case of online distribution, at least a portion of the computer program product may be temporarily stored or temporarily generated in a machine-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or an intermediary server.

[0057] According to one embodiment, each component (e.g., a module or a program) of the above-described components may include one or more entities, and some of the entities may be separated and placed in other components. According to one embodiment, one or more components or operations of the aforementioned components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (e.g., a module or a program) may be integrated into a single component. In such a case, the integrated component may perform one or more functions of each of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. According to one embodiment, the 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 one or more other operations may be added.

[0058] FIG. 2 is a front perspective view of an electronic device according to one embodiment. For example, the electronic device (101) of FIG. 2 may be at least partially similar to the electronic device (101) of FIG. 1 or may further include other embodiments of the electronic device.

[0059] According to one embodiment referring to FIG. 2, the electronic device (101) may include a housing (210) including a first side (or front side) (210A), a second side (or back side) (210B), and a side surface (210C) surrounding a space between the first side (210A) and the second side (210B). According to one embodiment, the housing (210) may also refer to a structure forming a portion of the first side (210A), the second side (210B), and the side surface (210C) of FIG. 2. For example, the first side (210A) may be formed by a front plate that is at least partially substantially transparent (e.g., a glass plate including various coating layers, or a polymer plate). The second side (210B) may be formed by a substantially opaque back plate. For example, the back plate may be formed of a coated or colored glass, ceramic, polymer, metal (e.g., aluminum, stainless steel (STS), or magnesium), or a combination of at least two of the aforementioned materials.

[0060] For example, the side (210C) may be formed by a side bezel structure (or "side member") that is joined to the front plate and the back plate and includes a metal and / or polymer. For example, the back plate and the side bezel structure may be formed integrally and include the same material (e.g., a metal material such as aluminum).

[0061] According to one embodiment, the electronic device (101) may include at least one of a display (201), a sensor module (204), or a camera module (205). For example, although not shown, the electronic device (101) may further include at least one of an input device (e.g., a microphone), an audio output device (e.g., a speaker), a key input device (e.g., a button), an indicator, or a connector. For example, the input device, the audio output device, and the connector may be disposed in an internal space of the electronic device (101) and exposed to the external environment through at least one hole formed in the housing (210). For example, the hole formed in the housing (210) may be used in common for the input device and the audio output device.

[0062] In one embodiment, the display (201) may be exposed through a substantial portion of the front plate of the first surface (210A). For example, the display (201) may be coupled to or disposed adjacent to at least one of a touch sensing circuit, a pressure sensor capable of measuring the intensity (pressure) of a touch, or a digitizer capable of detecting a magnetic field-type stylus pen.

[0063] According to one embodiment, the sensor module (204) may generate an electrical signal or data value corresponding to an internal operating state of the electronic device (101) or an external environmental state. For example, the sensor module (204) may include at least one of a first sensor module (204) (e.g., a proximity sensor) and / or a second sensor module (not shown) (e.g., a fingerprint sensor) disposed on a first surface (210A) of the housing (210), or a third sensor module (e.g., an HRM sensor) disposed on a second surface (210B) of the housing (210). For example, the fingerprint sensor may be disposed on the first surface (210A) of the housing (210). The fingerprint sensor (e.g., an ultrasonic or optical fingerprint sensor) may be disposed under the display (201) on the first surface (210A). The electronic device (101) may further include at least one of a sensor module not shown, for example, a gesture sensor, a gyro sensor, a pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a color sensor, an infrared (IR) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor (204).

[0064] In one embodiment, the camera module (205) may include a first camera module (205) disposed on a first side (210A) of the electronic device (101). For example, the electronic device (101) may include a second camera module disposed on a second side (210B), and / or a flash. The camera module (205) may include one or more lenses, an image sensor, and / or an image signal processor. The flash may include a light emitting diode or a xenon lamp. For example, two or more lenses (a wide-angle lens and a telephoto lens) and image sensors may be disposed on one side of the electronic device (101).

[0065] According to one embodiment, the electronic device (101) may include conductive portions (231, 232, 233 and / or 234) used as antennas (or antenna structures). For example, the conductive portions (233 and 234) disposed in the first region (240A) may be segmented from each other via at least one segment (e.g., a non-conductive portion). For example, the conductive portions (231 and 232) in the second region (240B) may be segmented from each other via at least one segment (e.g., a non-conductive portion). For example, each of the conductive portions (231, 232, 233 or 234) may be used as a different antenna. For example, at least two conductive portions (231, 232, 233 and / or 234) may be used as one antenna.

[0066] According to one embodiment, antennas using conductive portions (231, 232, 233 and / or 234) can transmit or receive signals or data in different frequency bands or at least partially overlapping frequency bands. For example, an antenna using a first conductive portion (231) can transmit or receive at least one of a signal or data in a first frequency band and / or a second frequency band. For example, the first frequency band may include a relatively low frequency band (e.g., a low band (LB)) among the frequency bands supported by the electronic device (101). The second frequency band may include a higher frequency band (e.g., a middle band (MB)) than the first frequency band among the frequency bands supported by the electronic device (101).

[0067] For example, an antenna using the second conductive portion (232) and / or an antenna using the fourth conductive portion (234) may transmit or receive at least one of a signal or data in a third frequency band. For example, the third frequency band may include a frequency band (e.g., HB (high band) and / or UHB (ultra high band)) higher than the first frequency band and the second frequency band among the frequency bands supported by the electronic device (101).

[0068] For example, an antenna using a third conductive portion (233) can transmit or receive at least one of a signal or data in a second frequency band.

[0069] For example, the electronic device (101) may determine that the transmitting antenna for the second frequency band is switchable based on the first conductive portion (231) and the third conductive portion (233) being arranged in different regions (e.g., the second region (240B) or the first region (240A)).

[0070] For example, the electronic device (101) may determine that the transmitting antenna for the third frequency band is switchable based on the second conductive portion (232) and the fourth conductive portion (234) being positioned in different regions (e.g., the second region (240B) or the first region (240A)).

[0071] For example, the electronic device (101) may determine that switching of the transmitting antenna for the first frequency band is limited based on the first conductive portion (231) disposed in the second region (240B).

[0072] In the following description, it may be assumed that the electronic device (101) supports switching of the transmission antenna for the second frequency band and the third frequency band, as shown in FIG. 2, and does not support switching of the transmission antenna for the first frequency band. However, this is not limited thereto, and the same may be applied even when the electronic device (101) supports switching of the transmission antenna for at least one of the first frequency band, the second frequency band, or the third frequency band.

[0073] FIG. 3 is a block diagram of an electronic device physically having multiple antennas according to one embodiment. FIG. 4 is a block diagram of an electronic device for switching antennas according to one embodiment. FIG. 5 is a block diagram of an electronic device for switching antennas according to one embodiment. For example, the electronic device (101) of FIGS. 3, 4, and 5 may be at least partially similar to the electronic device (101) of FIG. 1 or 2 or may further include other embodiments of the electronic device.

[0074] According to one embodiment with reference to FIGS. 3, 4, and 5, the electronic device (101) may include at least one of a processor (300), a communication circuit (310), a plurality of antennas (320), or a memory (330). According to one embodiment, the processor (300) may be substantially the same as the processor (120) (e.g., a communication processor) of FIG. 1 or may be included in the processor (120). The communication circuit (310) may be substantially the same as the wireless communication module (192) of FIG. 1 or may be included in the wireless communication module (192). The plurality of antennas (320) may be substantially the same as the antenna module (197) of FIG. 1 or the conductive patterns (231, 232, 233, and / or 234) of FIG. 2 or may be included in the antenna module (197) or the conductive patterns (231, 232, 233, and / or 234). The memory (330) may be substantially the same as the memory (130) of FIG. 1, or may be included in the memory (130). For example, the plurality of antennas (320) of FIG. 3 include, but are not limited to, a first antenna (322) and a second antenna (324), and may include three or more antennas. For example, the processor (300) may be operatively, functionally, and / or electrically connected to at least one of the communication circuit (310) and the memory (330). For example, the processor (300) may include at least one processor including a processing circuit.

[0075] According to one embodiment, the plurality of antennas (320) may support at least one of transmitting or receiving at least one of a signal or data in a designated frequency band. For example, the first antenna (322) and the second antenna (324) may operate as a transmitting antenna and a receiving antenna for transmitting or receiving at least one of a signal or data in a designated frequency band. For example, the first antenna (322) may operate as a transmitting antenna and a receiving antenna for transmitting or receiving at least one of a signal or data in a designated frequency band. The second antenna (324) may operate as a receiving antenna for receiving at least one of a signal or data in a designated frequency band. For example, the second antenna (324) may support a transmitting function and a receiving function for a designated frequency band, but may operate as a receiving antenna for the designated frequency band. For example, the designated frequency band may include at least one of a first frequency band (e.g., LB (Low band)), a second frequency band (e.g., MB (Middle band)), or a third frequency band (e.g., HB (High band) or UHB (Ultra high band)). For example, the plurality of antennas (320) may include at least one of antennas supporting the first frequency band, antennas supporting the second frequency band, antennas supporting the third frequency band, antennas supporting the first frequency band and the second frequency band, or antennas supporting the second frequency band and the third frequency band. For example, the transmitting antenna may refer to at least one antenna (e.g., the first antenna (322) and / or the second antenna (324)) among the plurality of antennas (320) used for transmitting at least one of a signal or data.For example, the receiving antenna may represent at least one antenna (e.g., a first antenna (322) and / or a second antenna (324)) among a plurality of antennas (320) used for receiving at least one of a signal or data.

[0076] According to one embodiment, the processor (300) may determine whether a transmission antenna for a specified frequency band is switchable. For example, the processor (300) may determine whether a transmission antenna for a specified frequency band is switchable based on antenna-related information (e.g., radio frequency configuration (RFC)) stored in the memory (330). For example, the antenna-related information may include information on whether the electronic device (101) supports a transmission antenna switching function for each frequency band supported by the electronic device (101) (e.g., a first frequency band, a second frequency band, or a third frequency band). For example, the processor (300) may determine whether a transmission antenna for a specified frequency band is switchable through a separate module (e.g., a transceiver resource manager (TRM)) that manages at least one of the resources of the communication circuit (310) (e.g., the RFIC (400) and / or RFFE (410) of FIG. 4 or the RFIC (500), the first RFFE (510) and / or the second RFFE (520) of FIG. 5) or the resources of the antennas (e.g., the first antenna (322) and / or the second antenna (324)).

[0077] For example, the processor (300) can check whether the processor supports a switching function of a transmission antenna for a specified frequency band. For example, a state in which the switching function of the transmission antenna is determined to be supported may include a state in which there are multiple transmission antennas (e.g., the first antenna (322) and the second antenna (324) of FIG. 3) arranged in different areas that support the specified frequency band. For example, a state in which the switching function of the transmission antenna is determined not to be supported may include a state in which there is one transmission antenna (e.g., the first antenna (322) or the second antenna (324) of FIG. 3) that supports the specified frequency band.

[0078] For example, if the processor (300) determines that the switching function of the transmitting antenna for the specified frequency band is not supported, it may determine that the switching of the transmitting antenna for the specified frequency band is limited. For example, the switching function of the transmitting antenna may include at least one of ASdiv (antenna switch diversity) that switches the transmitting antenna (e.g., the first antenna (322) or the second antenna (324)) connected to the RFFE (410) as shown in FIG. 4, or Tx device hopping that switches the RFFE (e.g., the first RFFE (510) or the second RFFE (520)) and the transmitting antenna (e.g., the first antenna (322) or the second antenna (324)) as shown in FIG. 5.

[0079] For example, if it is determined that the processor (300) supports the function of switching the transmission antenna for a specified frequency band, it may determine whether the transmission antenna for the specified frequency band can be switched based on the communication status of the electronic device (101). For example, if the processor (300) determines whether the transmission antenna for wireless communication of the first subscriber identity module (SIM) in the electronic device (101) supporting DSDA (dual sim dual active) can be switched, it may determine whether an antenna (or radio frequency front-end (RFFE)) that can be used as a transmission antenna for wireless communication related to the first SIM through switching of the transmission antenna is being used for wireless communication related to the second SIM. If the processor (300) is using an antenna (or RFFE) that can be used as a transmission antenna of the first SIM through switching of the transmission antenna in wireless communication related to the second SIM, it may determine that switching of the transmission antenna for wireless communication related to the first SIM is restricted. The processor (300) may determine that switching of the transmission antenna for wireless communication related to the first SIM is possible if the antenna (or RFFE) that can be used as the transmission antenna of the first SIM is not being used through switching of the transmission antenna in wireless communication related to the second SIM.

[0080] For example, when the processor (300) supports EN-DC (E-UTRA NR dual connectivity), it can check whether an antenna (or RFFE) that can be used as a transmission antenna of a first communication method (e.g., long term evolution (LTE)) is being used for wireless communication of a second communication method (e.g., new radio (NR)) through switching of transmission antennas. When the antenna (or RFFE) that can be used as a transmission antenna of the first communication method is being used for wireless communication of the second communication method through switching of transmission antennas, the processor (300) can check the priorities of the first and second communication methods. When the priority of the second communication method is higher than the priority of the first communication method, the processor (300) can determine that switching of the transmission antenna of the first communication method is restricted. When the priority of the first communication method is higher than the priority of the second communication method, the processor (300) can determine that switching of the transmission antenna of the first communication method is possible. The processor (300) may determine that switching of the transmission antenna of the first communication method is possible when the antenna (or RFFE) that can be used as the transmission antenna of the first communication method is not being used for wireless communication of the second communication method through switching of the transmission antenna.

[0081] According to one embodiment, the processor (300) can identify a cell that the electronic device (101) can access through a scan (or search). For example, when the electronic device (101) is booted or does not provide a wireless communication service (e.g., no service), the processor (300) can detect a cell that the electronic device (101) can access through a scan. For example, the cell that the electronic device (101) can access may include a cell that supports a frequency band that the electronic device (101) can support among cells from which the electronic device (101) has received a signal of a signal strength greater than or equal to a specified signal strength through a scan.

[0082] According to one embodiment, the processor (300) may check the channel status of the electronic device (101) related to a cell to which the electronic device (101) can connect. For example, the processor (300) may check whether switching of a transmission antenna for a frequency band for wireless communication with a cell to which the electronic device (101) can connect is possible. For example, when the processor (300) determines that switching of a transmission antenna for a frequency band of a cell to which the electronic device (101) can connect is possible, the processor (300) may check the channel status (or channel information) of the electronic device (101) for a cell to which the electronic device (101) can connect by using the channel status (or channel information) of a first receiving antenna (e.g., a PRx (primary receive) antenna) (e.g., the first antenna 322)) and the channel status (or channel information) of a second receiving antenna (e.g., a DRx (diversity receive) antenna) (e.g., the second antenna 324)). For example, the channel state of the first receiving antenna may indicate the channel state of a cell accessible to the electronic device (101) measured through the first receiving antenna. For example, the channel state of the second receiving antenna may indicate the channel state of a cell accessible to the electronic device (101) measured through the second receiving antenna. For example, the channel state of the electronic device (101) is a channel state between the electronic device (101) and a cell accessible to the electronic device (101) measured (or estimated) by the electronic device (101), and may be confirmed (or determined) based on at least one of the channel state of the first receiving antenna (e.g., PRx antenna) or the channel state of the second receiving antenna (e.g., DRx antenna). For example, the channel state of the electronic device (101) may include a higher channel state (or good channel state) among the channel states of the first receiving antenna (e.g., PRx antenna) and the second receiving antenna (e.g., DRx antenna) in a state where the transmitting antenna of the electronic device (101) can be switched.For example, if the processor (300) determines that switching of the transmission antenna for the frequency band of the cell to which the electronic device (101) can connect is restricted, the processor (300) may check the channel state of the electronic device (101) using the channel state of the first receiving antenna (e.g., PRx (primary receive) antenna) (e.g., the first antenna (322)). For example, the channel state of the electronic device (101) may include the channel state of the first receiving antenna (e.g., PRx antenna) in a state in which switching of the transmission antenna of the electronic device (101) is restricted. For example, the channel state may include at least one of a received signal strength indication (RSSI), a reference signal received quality (RSRQ), a reference signal received power (RSRP), a signal to noise ratio (SNR), a signal to interference and noise ratio (SINR), a quality of service (QoS), a block error rate (BLER), or a bit error rate (BER).

[0083] According to one embodiment, the processor (300) may control the communication circuit (310) to perform a random access channel (RACH) procedure related to a cell to which the electronic device (101) can connect based on a channel state of the electronic device (101). For example, the processor (300) may determine whether the channel state of the electronic device (101) satisfies a specified RACH condition or a specified cell selection condition related to a cell to which the electronic device (101) can connect. If the processor (300) determines that the channel state of the electronic device (101) satisfies a specified RACH condition or a specified cell selection condition related to a cell to which the electronic device (101) can connect, the processor (300) may control the communication circuit (310) to perform a RACH procedure with a cell to which the electronic device (101) can connect. If the processor (300) determines that the channel status of the electronic device (101) does not satisfy a designated RACH condition or a designated cell selection condition related to a cell to which the electronic device (101) can access, the processor (300) may add information related to a cell to which the electronic device (101) can access to a RACH list. For example, the designated RACH condition or the designated cell selection condition may be obtained from a system information block (e.g., a system information block (SIB) 1) received from a cell to which the electronic device (101) can access. For example, a state of satisfying the designated RACH condition or the designated cell selection condition may include a state in which the channel status of the electronic device (101) exceeds a designated RACH reference channel value. For example, a state of not satisfying the designated RACH condition or the designated cell selection condition may include a state in which the channel status of the electronic device (101) is less than or equal to a designated RACH reference channel value. For example, the RACH procedure may include a series of operations in which the electronic device (101) transmits a RACH preamble to synchronize transmission timing between the electronic device (101) and a cell to which the electronic device (101) is accessible.For example, a state satisfying a designated RACH condition may include a state in which a RACH procedure is determined to be capable of being performed based on a channel state of the electronic device (101). For example, a state in which a designated cell reselection condition is determined to be capable of being performed because a cell to which the electronic device (101) is to be connected (or registered) exists based on a channel state of the electronic device (101). For example, cell selection may include a series of procedures in which the electronic device (101) connects (or registers) to a designated cell, and may include a RACH procedure.

[0084] For example, if a cell satisfying a specified RACH condition or a specified cell selection condition is not detected among the cells detected through the scan, the processor (300) may control the communication circuit (310) to perform a RACH procedure with a cell with the highest priority among the cells included in the RACH list.

[0085] According to one embodiment, when the processor (300) sets the channel state of the electronic device (101) based on the channel state of the second antenna (324) (e.g., DRx) in a state where switching of the transmission antenna is possible, the processor (300) may control the communication circuit (310) to switch the transmission antenna related to the cell to which the electronic device (101) can connect from the first antenna (322) (e.g., PRx) to the second antenna (324). For example, switching of the transmission antenna may be performed when it is determined that RACH is to be performed.

[0086] For example, the processor (300) may control the communication circuit (310) to switch the transmitting antenna associated with the cell to which the electronic device (101) can connect from the first antenna (322) (e.g., PRx) to the second antenna (324) when the difference (or difference value) between the channel state of the first antenna (322) (e.g., PRx) and the channel state of the second antenna (324) (e.g., DRx) satisfies a designated switching condition. As an example, the state of satisfying the designated switching condition may include a state in which the difference (or difference value) between the channel state of the first antenna (322) (e.g., PRx) and the channel state of the second antenna (324) (e.g., DRx) exceeds a designated first reference difference value (e.g., about 5 dB). For example, if the difference (or difference value) between the channel state of the first antenna (322) (e.g., PRx) and the channel state of the second antenna (324) (e.g., DRx) does not satisfy a designated switching condition, the processor (300) may control the communication circuit (310) to maintain the transmitting antenna associated with the cell to which the electronic device (101) can connect as the first antenna (322) (e.g., PRx). As an example, the state of not satisfying the designated switching condition may include a state in which the difference (or difference value) between the channel state of the first antenna (322) (e.g., PRx) and the channel state of the second antenna (324) (e.g., DRx) is less than or equal to a designated first reference difference value (e.g., about 5 dB). As an example, the channel state of the second antenna (324) may represent the channel state of the cell to which the electronic device (101) can connect, measured through the second antenna (324).

[0087] According to one embodiment, when the processor (300) obtains information related to measurement from a base station (or network, serving cell), the processor (300) may check the channel status of the electronic device (101) based on the information related to measurement. For example, the processor (300) may check a serving cell for performing measurement and at least one neighboring cell from the information related to measurement. For example, the serving cell may indicate a cell to which the electronic device (101) is currently connected (or registered) for wireless communication. For example, the neighboring cell may indicate a cell that is physically adjacent to the serving cell and to which the electronic device (101) can connect through handover or cell reselection. For example, the information related to measurement may be obtained through a radio resource control (RRC) message (e.g., RRC reconfiguration) or system information (e.g., system information block (SIB)).

[0088] For example, the processor (300) can check the channel state of a cell (e.g., a serving cell or a neighboring cell) in an RRC connected state, an RRC inactive state, or an RRC idle state.

[0089] For example, the processor (300) may determine whether switching of the transmit antennas for the frequency bands of each of the serving cell and at least one neighboring cell is possible. For example, if the channel state of the first receive antenna (e.g., PRx (primary receive) antenna) (e.g., the first antenna (322)) for the cell does not satisfy a specified measurement condition, the processor (300) may determine whether switching of the transmit antennas for the frequency band of the corresponding cell is possible. For example, the state of not satisfying the specified measurement condition may include a state in which the channel state of the first receive antenna (e.g., PRx antenna) is lower than or equal to a specified measurement reference value (e.g., -115 dBm). For example, the state of satisfying the specified measurement condition may include a state in which the channel state of the first receive antenna (e.g., PRx) exceeds a specified measurement reference value (e.g., -115 dBm).

[0090] For example, if the processor (300) determines that the channel state of the first receiving antenna (e.g., PRx antenna) (e.g., the first antenna (322)) for the first cell (e.g., the serving cell or the first neighboring cell) satisfies a specified measurement condition or that switching of the transmitting antenna for the frequency band of the first cell (e.g., the serving cell or the first neighboring cell) is possible, the processor (300) may use the channel state of the first receiving antenna (e.g., PRx antenna) (e.g., the first antenna (322)) and the channel state of the second receiving antenna (e.g., DRx (diversity receive) antenna) (e.g., the second antenna (324)) to check the channel state of the electronic device (101) related to the first cell. For example, the channel state of the first receiving antenna may represent the channel state of the first cell (e.g., the serving cell or the first neighboring cell) measured through the first receiving antenna. For example, the channel state of the second receiving antenna may represent the channel state of the first cell (e.g., the serving cell or the first neighboring cell) measured through the second receiving antenna. For example, the channel state of the electronic device (101) related to the first cell is a channel state between the electronic device (101) and the first cell measured (or estimated) by the electronic device (101), and may be confirmed (or determined) based on at least one of the channel state of the first receiving antenna (e.g., the PRx antenna) or the channel state of the second receiving antenna (e.g., the DRx antenna). For example, the channel state of the electronic device (101) related to the first cell may include a higher channel state (or good channel state) among the channel state of the first receiving antenna (e.g., PRx antenna) and the channel state of the second receiving antenna (e.g., DRx antenna) in a state where switching of the transmitting antenna for the frequency band of the first cell (e.g., serving cell or first neighboring cell) of the electronic device (101) is possible.

[0091] For example, if the processor (300) determines that switching of the transmission antenna for the frequency band of the second cell (e.g., the serving cell or the second neighboring cell) is limited, the processor (300) may use the channel status of the first receiving antenna (e.g., the PRx (primary receive) antenna) (e.g., the first antenna (322)) to check the channel status of the electronic device (101) related to the second cell. For example, if the processor (300) determines that the channel state of the first receiving antenna (e.g., PRx antenna) (e.g., the first antenna (322)) for the second cell (e.g., the serving cell or the first neighboring cell) does not satisfy a specified measurement condition and that switching of the transmitting antenna for the frequency band of the second cell (e.g., the serving cell or the second neighboring cell) is restricted, the processor (300) may use the channel state of the first receiving antenna (e.g., PRx (primary receive) antenna) (e.g., the first antenna (322)) to check the channel state of the electronic device (101) related to the second cell. For example, the channel state of the electronic device (101) related to the second cell may represent a channel state between the electronic device (101) and the second cell, which is measured (or estimated) by the electronic device (101).

[0092] According to one embodiment, the processor (300) may control the communication circuit (310) to perform a measurement report based on a channel state of an electronic device (101) associated with at least one cell. For example, the processor (300) may determine whether the channel state of the electronic device (101) associated with at least one cell satisfies a specified measurement report condition. If the processor (300) determines that the channel state of the electronic device (101) associated with at least one cell satisfies a specified measurement report condition, the processor (300) may control the communication circuit (310) to transmit channel state information of the electronic device (101) associated with at least one cell to a base station (or network, serving cell). If the processor (300) determines that the channel state of the electronic device (101) associated with at least one cell does not satisfy a specified measurement report condition, the processor (300) may control the communication circuit (310) to limit measurement reporting for channel state information.

[0093] According to one embodiment, the processor (300) may perform cell reselection based on a channel state of the electronic device (101) associated with at least one cell in an RRC standby state or an RRC inactive state. For example, the processor (300) may determine whether the channel state of the electronic device (101) associated with at least one cell in the RRC standby state or the RRC inactive state satisfies a specified cell reselection condition. If the processor (300) determines that the channel state of the electronic device (101) associated with at least one cell satisfies the specified cell reselection condition, the processor (300) may change the serving cell of the electronic device (101). If the processor (300) determines that the channel state of the electronic device (101) associated with at least one cell does not satisfy the specified cell reselection condition, the processor (300) may maintain the serving cell of the electronic device (101). For example, changing the serving cell of the electronic device (101) may include a series of operations for changing the serving cell set in the electronic device (101) to another cell (e.g., a neighboring cell). For example, another cell may include a neighboring cell having the best channel status among at least one neighboring cell. For example, a state in which a designated cell reselection condition is satisfied may include a state in which the channel status of the serving cell is less than or equal to a designated first cell reselection criterion channel value, and a state in which the channel status of the neighboring cell exceeds a designated second cell reselection criterion channel value. For example, a state in which a designated cell reselection condition is not satisfied may include a state in which the channel status of the serving cell exceeds a designated first cell reselection criterion channel value, or a state in which the channel status of the neighboring cell is less than or equal to a designated second cell reselection criterion channel value. For example, a state in which a designated cell reselection condition is satisfied may include a state in which the channel status of the neighboring cell exceeds a designated second cell reselection criterion channel value, and a state in which the channel status of the neighboring cell is greater than the channel status of the serving cell by a designated second criterion difference value.For example, a state in which a specified cell reselection condition is not satisfied may include a state in which the channel status of a neighboring cell is less than or equal to a specified second cell reselection criterion channel value, or a state in which the channel status of the neighboring cell is less than a specified second criterion difference value compared to the channel status of the serving cell.

[0094] For example, the processor (300) may control the communication circuit (310) to perform a tracking area (TA) update when the tracking area identifier (TAI) of the serving cell of the electronic device (101) changes through cell reselection.

[0095] According to one embodiment, the communication circuit (310) may support wireless communication between the electronic device (101) and an external electronic device (e.g., the electronic device (102 or 104) of FIG. 1) via a plurality of antennas (320). For example, the communication circuit (310) may include a radio frequency integrated circuit (RFIC) (400) and an RFFE (410) that process signals transmitted or received via the plurality of antennas (320), as shown in FIG. 4. When the communication circuit (310) switches the transmission antenna based on the control of the processor (300) in the configuration of FIG. 4, the communication circuit (310) may switch the transmission antenna (e.g., the first antenna (322) or the second antenna (324)) connected to the RFFE (410) based on the ASdiv method. For example, the ASdiv method may include a series of operations that change the transmit antenna connected to the RFFE (410) without changing the RFIC (400) and RFFE (410).

[0096] For example, the communication circuit (310) may include an RFIC (500) that processes signals transmitted or received through a plurality of antennas (320), as shown in FIG. 5, and a plurality of RFFEs (e.g., a first RFFE (510) and a second RFFE (520)). When the communication circuit (310) switches a transmission antenna based on the control of the processor (300) in the configuration of FIG. 5, the RFFE (e.g., the first RFFE (510) or the second RFFE (520)) and the transmission antenna (e.g., the first antenna (322) or the second antenna (324)) may be switched at the same time based on a transmission device hopping method. For example, the RFFE (e.g., the first RFFE (510) and / or the second RFFE (520)) may include a PA (power amplifier) ​​and an LNA (low noise amplifier).

[0097] According to one embodiment, the memory (330) may store various data used by at least one component (e.g., the processor (300) or the communication circuit (310)) of the electronic device (101). For example, the memory (330) may store various instructions that may be executed by the processor (300). For example, the instructions may be executed individually or collectively by the processor (300) (e.g., at least one processor).

[0098] According to one embodiment, an electronic device (e.g., the electronic device (101) of FIG. 1, FIG. 2, FIG. 3, FIG. 4, or FIG. 5) may include a plurality of antennas (e.g., the antenna module (197) of FIG. 1 or the plurality of antennas (320) of FIG. 3), a communication circuit (e.g., the wireless communication module (192) of FIG. 1 or the communication circuit (310) of FIG. 3), at least one processor including a processing circuit (e.g., the processor (120) of FIG. 1 or the processor (300) of FIG. 3), and a memory (the memory (130) of FIG. 1 or the memory (330) of FIG. 3)) for storing instructions. According to one embodiment, the instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to determine whether switching of a transmission antenna associated with a frequency band of the first cell is possible when the electronic device detects a first cell through a scan. According to one embodiment, the instructions, when executed individually or collectively by at least one processor, may cause the electronic device to determine (or determine) a channel state of the first cell measured by the electronic device using a first antenna (e.g., the first antenna (322) of FIG. 3) set as a transmit antenna related to a frequency band of the first cell among a plurality of antennas (e.g., the conductive patterns (231, 232, 233 and / or 234) of FIG. 2 or the plurality of antennas (320) of FIG. 3)) and a channel state of the first cell measured by the electronic device using a second antenna (e.g., the second antenna (324) of FIG. 3) different from the first antenna, when the electronic device determines that switching of the transmit antenna is possible. According to one embodiment, the instructions, when executed individually or collectively by at least one processor, may cause the electronic device to determine a channel state of the first cell measured by the electronic device using the channel state of the first cell measured through the first antenna, when the electronic device determines that switching of the transmit antenna is limited.According to one embodiment, the instructions, when executed individually or collectively by at least one processor, may cause the electronic device to perform a random access channel (RACH) procedure with the first cell by using a first antenna or a second antenna used to determine a channel state of the first cell measured by the electronic device as a transmit antenna associated with a frequency band of the first cell, if the channel state of the first cell measured by the electronic device satisfies a specified RACH condition or a specified cell selection condition.

[0099] According to one embodiment, the instructions, when executed individually or collectively by at least one processor, may cause the electronic device to determine that switching of a transmit antenna associated with a frequency band of the first cell is possible if the electronic device determines that a plurality of transmit antennas supporting the frequency band of the first cell are available based on at least one of a structure of an antenna supporting the frequency band of the first cell, a communication state associated with a plurality of subscriber identity modules, or a communication state based on dual connectivity (DC).

[0100] According to one embodiment, the instructions, when executed individually or collectively by at least one processor, may cause the electronic device to determine that switching of the transmit antenna associated with the frequency band of the first cell is possible when a first antenna and a second antenna configured as transmit antennas associated with a frequency band of the first cell are disposed in different areas of the electronic device and the second antenna is determined to be available for data transmission in the frequency band of the first cell.

[0101] According to one embodiment, the instructions, when executed individually or collectively by at least one processor, may cause the electronic device to determine, when it determines that switching of the transmission antennas is possible, a first channel state of a first cell measured through a first antenna associated with a frequency band of the first cell among a plurality of antennas and a second channel state of the first cell measured through a second antenna. According to one embodiment, the instructions, when executed by at least one processor, may cause the electronic device to determine a higher channel state among the first channel state and the second channel state as the channel state of the first cell measured by the electronic device.

[0102] According to one embodiment, the instructions, when executed individually or collectively by at least one processor, may cause the electronic device to switch the second antenna to a transmit antenna associated with a frequency band of the first cell based on a difference value between the first channel state and the second channel state, when the electronic device determines the second channel state to be a channel state of the first cell measured by the electronic device.

[0103] According to one embodiment, the instructions, when executed individually or collectively by at least one processor, may cause the electronic device to determine a reference value associated with a RACH identified based on system information of the first cell. According to one embodiment, the instructions, when executed individually or collectively by at least one processor, may cause the electronic device to determine that a specified RACH condition or a specified cell selection condition is satisfied if a channel state of the first cell measured by the electronic device exceeds a reference value associated with the RACH.

[0104] According to one embodiment, the memory may store instructions that, when individually or collectively executed by at least one processor, cause the electronic device to obtain measurement-related information from the first cell while registered with the first cell. According to one embodiment, the memory may store instructions that, when individually or collectively executed by at least one processor, cause the electronic device to identify a first cell and a second cell for performing measurement based on the measurement-related information. According to one embodiment, the memory may store instructions that, when individually or collectively executed by at least one processor, cause the electronic device to identify a first cell and a second cell for performing measurement based on the measurement-related information. According to one embodiment, the memory may store instructions that, when individually or collectively executed by at least one processor, cause the electronic device to determine a channel state of the first cell measured by the electronic device (101) using a channel state of the first cell measured through a first antenna (322) set as a transmission antenna related to the frequency band of the first cell among a plurality of antennas (320) and a channel state of the first cell measured through a second antenna (324), when the electronic device determines that switching of a transmission antenna for a frequency band related to the first cell is possible. According to one embodiment, the memory may store instructions that, when executed individually or collectively by at least one processor, cause the electronic device (101) to determine a channel state of the first cell measured through the first antenna (322) using the channel state of the first cell when the electronic device determines that switching of the transmit antenna for the frequency band associated with the first cell is limited.

[0105] According to one embodiment, the memory may store instructions that, when executed individually or collectively by at least one processor, cause the electronic device (101) to determine the channel state of the second cell measured by the electronic device (101) using the channel state of the second cell measured through the first antenna (322) set as the transmit antenna associated with the frequency band of the second cell among the plurality of antennas (320) and the channel state of the second cell measured through the second antenna (324) if the electronic device determines that switching of the transmit antenna for the frequency band associated with the second cell is possible. According to one embodiment, the memory may store instructions that, when executed individually or collectively by at least one processor, cause the electronic device (101) to determine the channel state of the second cell measured by the electronic device (101) using the channel state of the second cell measured through the first antenna (322) if the electronic device determines that switching of the transmit antenna for the frequency band associated with the second cell is limited.

[0106] According to one embodiment, the memory may store instructions that, when executed individually or collectively by at least one processor, cause the electronic device to determine whether a measurement reporting condition is satisfied based on at least one of a channel state of a first cell measured by the electronic device (101) or a channel state of a second cell measured by the electronic device (101). According to one embodiment, the memory may store instructions that, when executed individually or collectively by at least one processor, cause the electronic device to transmit at least one of a channel state of the first cell or a channel state of the second cell to the first cell if the electronic device determines that the measurement reporting condition is satisfied.

[0107] According to one embodiment, the measurement reporting condition can be identified in a radio resource control (RRC) message received from the first cell.

[0108] According to one embodiment, the memory may store instructions that, when executed individually or collectively by at least one processor, cause the electronic device to identify a first cell and a second cell for performing measurements in an RRC (radio resource control) idle state based on information related to measurements acquired from the first cell. According to one embodiment, the memory may store instructions that, when executed individually or collectively by at least one processor, cause the electronic device to identify a first cell and a second cell for performing measurements in an RRC idle state based on information related to measurements acquired from the first cell. In another embodiment, the memory may store instructions that, when executed individually or collectively by at least one processor, cause the electronic device to identify a channel state of the first cell measured in the electronic device (101) using a channel state of the first cell measured through a first antenna (322) set as a transmission antenna related to a frequency band of the first cell among a plurality of antennas (320) in an RRC idle state and a channel state of the first cell measured through a second antenna (324) if the electronic device determines that switching of a transmission antenna for a frequency band related to the first cell is possible. According to one embodiment, the memory may store instructions that, when executed individually or collectively by at least one processor, cause the electronic device (101) to determine a channel state of the first cell measured by the electronic device (101) using the channel state of the first cell measured through the first antenna (322) in an RRC standby state when the electronic device determines that switching of the transmission antenna for the frequency band associated with the first cell is limited.

[0109] According to one embodiment, the memory may store instructions that, when executed individually or collectively by at least one processor, cause the electronic device to perform measurements on the first cell through the plurality of antennas based on information related to measurements acquired from the first cell. According to one embodiment, the memory may store instructions that, when executed individually or collectively by at least one processor, cause the electronic device to determine the channel state of the first cell measured by the electronic device (101) using the channel state of the first cell measured through the first antenna (322) configured as a transmission antenna related to the frequency band of the first cell among the plurality of antennas (320) and the channel state of the first cell measured through the second antenna (324), if the channel state of the first cell measured through the first antenna (322) configured as a transmission antenna related to the frequency band of the first cell satisfies a specified measurement condition.

[0110] According to one embodiment, the memory may store instructions that, when executed individually or collectively by at least one processor, cause the electronic device to determine whether switching of the transmit antenna for the frequency band associated with the first cell is possible if a channel state of the first cell measured through the first antenna (322) set as the transmit antenna associated with the frequency band of the first cell does not satisfy a specified measurement condition.

[0111] According to one embodiment, the memory may store instructions that, when executed individually or collectively by at least one processor, cause the electronic device (101) to determine a channel state of the second cell measured by using a channel state of the second cell measured through a first antenna (322) set as a transmit antenna related to a frequency band of the second cell among a plurality of antennas (320) in an RRC standby state and a channel state of the second cell measured through a second antenna (324) if the electronic device determines that switching of a transmit antenna related to a frequency band of the second cell is possible. According to one embodiment, the memory may store instructions that, when executed individually or collectively by at least one processor, cause the electronic device (101) to determine a channel state of the second cell measured by using a channel state of the second cell measured through the first antenna (322) in an RRC standby state if the electronic device determines that switching of a transmit antenna related to a frequency band of the second cell is limited.

[0112] According to one embodiment, the memory may store instructions that, when executed individually or collectively by at least one processor, cause the electronic device to perform measurements on a second cell via a plurality of antennas. According to one embodiment, the memory may store instructions that, when executed individually or collectively by at least one processor, cause the electronic device to determine a channel state of the second cell measured by the electronic device (101) using the channel state of the second cell measured via the first antenna (322) configured as a transmission antenna related to a frequency band of the second cell among the plurality of antennas (320) and the channel state of the second cell measured via the second antenna (324), if the channel state of the second cell measured via the first antenna (322) configured as a transmission antenna related to a frequency band of the second cell satisfies a specified measurement condition.

[0113] According to one embodiment, the memory may store instructions that, when executed individually or collectively by at least one processor, cause the electronic device to determine whether switching of the transmit antenna for the frequency band associated with the second cell is possible if a channel state of the second cell measured through the first antenna (322) set as the transmit antenna associated with the frequency band of the second cell does not satisfy a specified measurement condition.

[0114] According to one embodiment, the memory may store instructions that, when executed individually or collectively by at least one processor, cause the electronic device (101) to change a serving cell if the electronic device determines that a cell reselection condition is satisfied based on at least one of a channel state of a first cell measured by the electronic device (101) or a channel state of a second cell measured by the electronic device (101).

[0115] FIG. 6 is a flowchart (600) for performing a RACH procedure in an electronic device according to one embodiment. In the following embodiments, the operations may be performed sequentially, but are not necessarily performed sequentially. For example, the order of the operations may be changed, and at least two operations may be performed in parallel. For example, the electronic device of FIG. 6 may be the electronic device (101) of FIG. 1, FIG. 2, FIG. 3, FIG. 4, or FIG. 5.

[0116] According to one embodiment referring to FIG. 6, an electronic device (e.g., electronic device (101)) or a processor (e.g., processor (120) of FIG. 1 or processor (300) of FIG. 3) may detect a cell to which the electronic device (101) can connect through a cell scan in operation 601. For example, when the electronic device (101) is booted or does not provide a wireless communication service (e.g., no service), the processor (300) may detect a cell to which the electronic device (101) can connect through a scan. For example, a cell to which the electronic device (101) can connect may include a cell that supports a frequency band that the electronic device (101) can support among cells that have received a signal strength greater than or equal to a specified signal strength through the scan. For example, the scan may be performed through a plurality of antennas (320) (e.g., receiving antennas) provided by the electronic device (101).

[0117] According to one embodiment, an electronic device (e.g., electronic device (101)) or a processor (e.g., processor (120 or 300)) may, at operation 603, determine whether a transmission antenna for a frequency band associated with a cell to which the electronic device (101) can access is switchable. For example, the processor (300) may determine whether a transmission antenna for a frequency band associated with a cell to which the electronic device (101) can access is switchable based on antenna-related information (e.g., radio frequency configuration (RFC)) stored in a memory (330). For example, the processor (300) may determine whether the electronic device (101) can switch the transmission antenna for a frequency band associated with an accessible cell through a separate module (e.g., a transceiver resource manager (TRM)) that manages the resources of the communication circuit (310) (e.g., the RFIC (400) and / or RFFE (410) of FIG. 4 or the RFIC (500), the first RFFE (510) and / or the second RFFE (520) of FIG. 5) or the resources of the antennas (e.g., the first antenna (322) and / or the second antenna (324)).

[0118] For example, the processor (300) can check whether the electronic device (101) supports a function of switching a transmission antenna for a frequency band related to a cell to which the electronic device can connect. For example, a state in which the switching function of the transmission antenna is determined to be supported may include a state in which there are multiple transmission antennas (e.g., the first antenna (322) and the second antenna (324) of FIG. 3) arranged in different areas that support a frequency band related to a cell to which the electronic device (101) can connect. For example, a state in which the switching function of the transmission antenna is determined not to be supported may include a state in which there is one transmission antenna (e.g., the first antenna (322) or the second antenna (324) of FIG. 3) that supports a frequency band related to a cell to which the electronic device (101) can connect.

[0119] For example, if the processor (300) determines that the electronic device (101) does not support a function of switching a transmission antenna for a frequency band related to a cell to which the electronic device (101) can connect, it may determine that switching of a transmission antenna for a frequency band related to a cell to which the electronic device (101) can connect is restricted. For example, the function of switching a transmission antenna may include at least one of ASdiv (antenna switch diversity) that switches a transmission antenna (e.g., a first antenna (322) or a second antenna (324)) connected to an RFFE (410) as shown in FIG. 4, or a Tx device hopping method that switches an RFFE (e.g., a first RFFE (510) or a second RFFE (520)) and a transmission antenna (e.g., a first antenna (322) or a second antenna (324)) as shown in FIG. 5.

[0120] For example, if the processor (300) determines that the electronic device (101) supports a function of switching a transmission antenna for a frequency band related to a cell to which the electronic device (101) can connect, it may determine whether the electronic device (101) can switch a transmission antenna for a frequency band related to a cell to which the electronic device (101) can connect based on a communication status of the electronic device (101). For example, the communication status of the electronic device (101) may include at least one of the use of DSDA (dual sim dual active), the use of DC (dual connectivity), or the priority of a communication method.

[0121] For example, if the processor (300) supports DSDA, it can determine whether wireless communication of the first subscriber identity module (SIM) and wireless communication of the second SIM are performed substantially simultaneously. If the processor (300) performs wireless communication between the first SIM and the second SIM, it can determine whether an antenna (or RFFE) that can be used as a transmit antenna for wireless communication related to the first SIM through switching of transmit antennas is being used for wireless communication related to the second SIM. If the antenna (or RFFE) that can be used as a transmit antenna for the first SIM through switching of transmit antennas is being used for wireless communication related to the second SIM, the processor (300) can determine that switching of transmit antennas for wireless communication related to the first SIM is restricted. If the antenna (or RFFE) that can be used as a transmit antenna for the first SIM through switching of transmit antennas is not being used for wireless communication related to the second SIM, the processor (300) can determine that switching of transmit antennas for wireless communication related to the first SIM is possible. When the processor (300) does not perform wireless communication related to the second SIM, it may determine that switching of the transmission antenna for wireless communication related to the first SIM is possible.

[0122] For example, when the processor (300) supports EN-DC (E-UTRA NR dual connectivity), it can check whether an antenna (or RFFE) that can be used as a transmission antenna of a first communication method (e.g., long term evolution (LTE)) is being used for wireless communication of a second communication method (e.g., new radio (NR)) through switching of transmission antennas. When an antenna (or RFFE) that can be used as a transmission antenna of the first communication method is being used for wireless communication of the second communication method through switching of transmission antennas, the processor (300) can determine that switching of the transmission antenna of the first communication method is restricted. When an antenna (or RFFE) that can be used as a transmission antenna of the first communication method is not being used for wireless communication of the second communication method through switching of transmission antennas, the processor (300) can determine that switching of the transmission antenna of the first communication method is possible.

[0123] For example, in an EN-DC environment, when an antenna (or RFFE) that can be used as a transmission antenna of a first communication method (e.g., LTE) is used for wireless communication of a second communication method (e.g., NR) through switching of transmission antennas, the processor (300) can check the priorities of the first and second communication methods. If the priority of the second communication method is higher than the priority of the first communication method, the processor (300) can determine that switching of the transmission antenna of the first communication method is restricted. If the priority of the first communication method is higher than the priority of the second communication method, the processor (300) can determine that switching of the transmission antenna of the first communication method is possible.

[0124] According to one embodiment, when an electronic device (e.g., electronic device (101)) or a processor (e.g., processor (120 or 300)) determines that switching of a transmission antenna is possible (e.g., 'Yes' in operation 603), in operation 605, the processor (300) may check the channel state of the electronic device (101) using the channel information of the first antenna (322) (e.g., PRx (primary receive) antenna) and the channel information of the second antenna (324) (e.g., DRx (diversity receive) antenna). For example, when the processor (300) determines that switching of a transmission antenna for a frequency band related to a cell to which the electronic device (101) can connect is possible, the processor (300) may select a higher channel state (or a good channel state) among the channel states of the first receiving antenna (e.g., PRx antenna) and the channel states of the second receiving antenna (e.g., DRx antenna) as the channel state of the electronic device (101). For example, the channel state of the first receiving antenna (e.g., PRx antenna) and the channel state of the second receiving antenna (e.g., DRx antenna) may be continuously or periodically checked (or estimated) through the first receiving antenna (e.g., PRx antenna) and the second receiving antenna (e.g., DRx antenna) when the electronic device (101) detects an accessible cell. For example, the channel state of the first receiving antenna may indicate the channel state of the cell accessible to the electronic device (101) measured through the first receiving antenna. For example, the channel state of the second receiving antenna may indicate the channel state of the cell accessible to the electronic device (101) measured through the second receiving antenna. For example, the channel state of the electronic device (101) may indicate the channel state between the electronic device (101) and the cell accessible to the electronic device (101) measured (or estimated) by the electronic device (101).For example, the channel state of the electronic device (101) may be set to a channel state (e.g., about -100 dBm) of the second antenna (324) having a higher channel state (or good channel state) among the channel state (e.g., about -110 dBm) of the first antenna (322) (e.g., Rx0) and the channel state (e.g., about -100 dBm) of the second antenna (324) (e.g., Rx1), as shown in Table 1 below. For example, the channel state may include at least one of a received signal strength indication (RSSI), a reference signal received quality (RSRQ), a reference signal received power (RSRP), a signal to noise ratio (SNR), a signal to interference and noise ratio (SINR), a quality of service (QoS), a block error rate (BLER), or a bit error rate (BER).

[0125] Antenna Channel Status (RSRP) Rx0- 110 dBm Rx1- 100 dBm

[0126] According to one embodiment, when the electronic device (e.g., electronic device (101)) or the processor (e.g., processor (120 or 300)) determines that switching of the transmission antenna is not possible (e.g., 'No' in operation 603), in operation 607, the processor (300) may check the channel state of the electronic device (101) using the channel state of the first antenna (322) (e.g., PRx (primary receive) antenna). For example, when the processor (300) determines that switching of the transmission antenna for a frequency band related to a cell to which the electronic device (101) is accessible is not possible, the processor (300) may check the channel state of the electronic device (101) using the channel state of the first receive antenna (e.g., PRx antenna). For example, the processor (300) may determine the channel state (e.g., about -110 dBm) of the first antenna (322) (e.g., Rx0) among the channel state (e.g., about -110 dBm) of the first antenna (322) (e.g., Rx0) and the channel state (e.g., about -100 dBm) of the second antenna (324) (e.g., Rx1) as the channel state of the electronic device (101), as shown in Table 1. For example, the channel state of the first antenna (322) may indicate the channel state of a cell to which the electronic device (101) can connect, measured through the first antenna (322). For example, the channel state of the second antenna (324) may indicate the channel state of a cell to which the electronic device (101) can connect, measured through the second antenna (324).

[0127] According to one embodiment, an electronic device (e.g., electronic device (101)) or a processor (e.g., processor (120 or 300)) may perform a random access channel (RACH) procedure related to a cell accessible to the electronic device (101) based on a channel state of the electronic device (101) at operation 609. For example, the processor (300) may determine whether the channel state of the electronic device (101) satisfies a specified RACH condition or a specified cell selection condition related to a cell accessible to the electronic device (101). If the processor (300) determines that the channel state of the electronic device (101) satisfies a specified RACH condition or a specified cell selection condition related to a cell accessible to the electronic device (101), the processor (300) may control the communication circuit (310) to perform a RACH procedure with a cell accessible to the electronic device (101). If the processor (300) determines that the channel status of the electronic device (101) does not satisfy a designated RACH condition or a designated cell selection condition related to a cell accessible to the electronic device (101), the processor (300) may add information related to a cell accessible to the electronic device (101) to a RACH list. For example, the RACH procedure may include a series of operations in which the electronic device (101) transmits a RACH preamble to synchronize transmission timing between the electronic device (101) and a cell accessible to the electronic device (101). For example, the designated RACH condition or the designated cell selection condition may be obtained from a system information block (e.g., system information block (SIB) 1) received from a cell accessible to the electronic device (101).

[0128] According to one embodiment, when the electronic device (101) or processor (e.g., processor (120 or 300)) sets the channel state of the electronic device (101) based on the channel state of the first antenna (322) (e.g., PRx), the first antenna (322) (e.g., PRx) may be used as a transmission antenna associated with a cell to which the electronic device (101) can connect.

[0129] According to one embodiment, when the electronic device (101) or the processor (e.g., the processor (120 or 300)) sets the channel state of the electronic device (101) based on the channel state of the second antenna (324) (e.g., DRx) in a state where switching of the transmission antenna is possible, the electronic device (101) may switch the transmission antenna associated with the cell to which the electronic device (101) can connect from the first antenna (322) (e.g., PRx) to the second antenna (324). For example, the processor (300) may control the communication circuit (310) to switch the transmission antenna associated with the cell to which the electronic device (101) can connect from the first antenna (322) (e.g., PRx) to the second antenna (324) when the difference (or difference value) between the channel state of the first antenna (322) (e.g., PRx) and the channel state of the second antenna (324) (e.g., DRx) satisfies a specified switching condition. For example, a state satisfying a specified switching condition may include a state in which a difference (or difference value) between a channel state of a first antenna (322) (e.g., PRx) and a channel state of a second antenna (324) (e.g., DRx) exceeds a specified first reference difference value (e.g., about 5 dB). For example, if the difference (or difference value) between the channel state of the first antenna (322) (e.g., PRx) and the channel state of the second antenna (324) (e.g., DRx) does not satisfy the specified switching condition, the processor (300) may control the communication circuit (310) to maintain the transmitting antenna associated with the cell to which the electronic device (101) can connect as the first antenna (322) (e.g., PRx). For example, a state in which a specified switching condition is not satisfied may include a state in which the difference (or difference value) between the channel state of the first antenna (322) (e.g., PRx) and the channel state of the second antenna (324) (e.g., DRx) is less than or equal to a specified first reference difference value (e.g., about 5 dB).

[0130] For example, the processor (300) may control the communication circuit (310) to switch the transmitting antenna associated with a cell accessible to the electronic device (101) from the first antenna (322) (e.g., PRx) to the second antenna (324) regardless of whether the difference (or difference value) between the channel state of the first antenna (322) (e.g., PRx) and the channel state of the second antenna (324) (e.g., DRx) satisfies a specified switching condition.

[0131] FIG. 7 is a flowchart (700) for selectively performing a RACH procedure in an electronic device according to one embodiment. For example, at least a portion of FIG. 7 may include detailed operations of operation 609 of FIG. 6 . In the following embodiments, the operations may be performed sequentially, but are not necessarily sequential. For example, the order of the operations may be changed, and at least two operations may be performed in parallel. For example, the electronic device of FIG. 7 may be the electronic device (101) of FIG. 1 , FIG. 2 , FIG. 3 , FIG. 4 , or FIG. 5 .

[0132] According to one embodiment referring to FIG. 7, when an electronic device (e.g., electronic device (101)) or a processor (e.g., processor (120) of FIG. 1 or processor (300) of FIG. 3) checks a channel state of the electronic device (101) (e.g., operation 605 or operation 607 of FIG. 6), in operation 701, it may check whether the channel state of the electronic device (101) satisfies a specified RACH condition or a specified cell selection condition. For example, the specified RACH condition or the specified cell selection condition may be set based on a specified value (e.g., about -104 dBm) based on "q-RxLevMin" included in a system information block (e.g., system information block (SIB) 1)) as shown in Table 2 when the electronic device (101) receives a system information block (e.g., SIB 1) as shown in Table 2 from an accessible cell. For example, the channel state of the electronic device (101) is a channel state between the electronic device (101) and a cell to which the electronic device (101) can be connected, which is measured (or estimated) by the electronic device (101), and can be confirmed (or determined) based on at least one of a channel state measured through a first receiving antenna (e.g., a PRx antenna) (e.g., a first antenna (322)) or a channel state measured through a second receiving antenna (e.g., a DRx antenna) (e.g., a second antenna (324)).

[0133] SystemInformationBlockType1Subscription ID = 1Misc ID = 0Pkt Version = 23RRC Release Number.Major.minor = 17.4.0Radio Bearer ID = 0, Physical Cell ID = 318NR Cell Global ID = 0Freq = 648672Sfn = 800, SubFrameNum = 5slot = 0PDU Number = BCCH_DL_SCH Message, Msg Length = 111SIB Mask in SI = 0x02ChoId = N / ASegmented PDU = falseLast Segment = NASegment Index = NAInterpreted PDU: value BCCH-DL-SCH-Message ::={message c1 : systemInformationBlockType1 :{cellSelectionInfo{q-RxLevMin -52,q-QualMin -17},

[0134] According to one embodiment, an electronic device (e.g., electronic device (101)) or a processor (e.g., processor (120 or 300)) may perform a RACH procedure related to a cell to which the electronic device (101) is accessible if the channel state of the electronic device (101) satisfies a specified RACH condition or a specified cell selection condition (e.g., 'Yes' in operation 701), in operation 703. For example, the state of satisfying the specified RACH condition or the specified cell selection condition may include a state in which the channel state of the electronic device (101) exceeds a specified RACH reference channel value. For example, the specified RACH reference channel value may include a minimum channel value at which wireless communication with a cell is determined to be possible.

[0135] According to one embodiment, if the channel status of the electronic device (e.g., electronic device (101)) or the processor (e.g., processor (120 or 300)) does not satisfy the specified RACH condition or the specified cell selection condition (e.g., 'No' in operation 701), in operation 705, the electronic device (101) may add information related to cells accessible to the electronic device to the RACH list. For example, the RACH list may include cells detected through cell scan that do not satisfy the specified RACH condition or the specified cell selection condition. The cells included in the RACH list may be prioritized based on the time point at which they were added to the RACH list or based on channel status information. For example, the state of not satisfying the specified RACH condition or the specified cell selection condition may include a state in which the channel status of the electronic device (101) is less than or equal to a specified RACH reference channel value.

[0136] According to one embodiment, if a cell satisfying a specified RACH condition or a specified cell selection condition is not detected among the cells detected through a scan, the electronic device (101) or the processor (e.g., the processor (120 or 300)) may perform a RACH procedure with a cell having the highest priority among the cells included in the RACH list.

[0137] FIG. 8 is a flowchart (800) for measurement reporting in an electronic device according to one embodiment. In the following embodiments, the operations may be performed sequentially, but are not necessarily performed sequentially. For example, the order of the operations may be changed, and at least two operations may be performed in parallel. For example, the electronic device of FIG. 8 may be the electronic device (101) of FIG. 1, FIG. 2, FIG. 3, FIG. 4, or FIG. 5.

[0138] According to one embodiment referring to FIG. 8, an electronic device (e.g., electronic device 101) or a processor (e.g., processor 120 of FIG. 1 or processor 300 of FIG. 3) may obtain measurement-related information from a base station (or network, serving cell) in operation 801. For example, the measurement-related information may include at least one of an index of at least one cell for the electronic device (101) to perform measurement, a frequency band of at least one cell, or a designated measurement reporting condition. For example, the measurement-related information may be identified in a radio resource control (RRC) reconfiguration message or system information (e.g., system information block (SIB)) received from the base station. For example, the base station may include a network entity to which the electronic device (101) is connected (or registered).

[0139] According to one embodiment, an electronic device (e.g., electronic device (101)) or a processor (e.g., processor (120 or 300)) may, in operation 803, determine whether switching of a transmit antenna for a frequency band of an i-th cell (e.g., a serving cell or a neighboring cell) is possible. For example, the processor (300) may determine whether switching of a transmit antenna for a frequency band associated with the i-th cell is possible based on antenna-related information (e.g., RFC) stored in a memory (330). For example, the processor (300) may determine whether the transmission antenna for the frequency band associated with the i-th cell can be switched through a separate module (e.g., TRM) that manages resources of the communication circuit (310) (e.g., RFIC (400) and / or RFFE (410) of FIG. 4 or RFIC (500), first RFFE (510) and / or second RFFE (520) of FIG. 5) or resources of antennas (e.g., first antenna (322) and / or second antenna (324)). For example, i is an index of cells for performing measurements in the electronic device (101), and may include 0 (or 1) as an initial value.

[0140] For example, the processor (300) can check whether the processor supports a switching function of a transmission antenna for a frequency band associated with the i-th cell. For example, a state in which the switching function of the transmission antenna is determined to be supported may include a state in which there are multiple transmission antennas (e.g., the first antenna (322) and the second antenna (324) of FIG. 3) arranged in different areas that support the frequency band associated with the i-th cell. For example, a state in which the switching function of the transmission antenna is determined not to be supported may include a state in which there is one transmission antenna (e.g., the first antenna (322) or the second antenna (324) of FIG. 3) that supports the frequency band associated with the i-th cell.

[0141] For example, if the processor (300) determines that the switching function of the transmission antenna for the frequency band associated with the i-th cell is not supported, it may determine that the switching of the transmission antenna for the frequency band associated with the i-th cell is restricted. For example, the switching function of the transmission antenna may include at least one of ASdiv, which switches a transmission antenna (e.g., the first antenna (322) or the second antenna (324)) connected to the RFFE (410), as shown in FIG. 4, or a transmission device hopping scheme, which switches an RFFE (e.g., the first RFFE (510) or the second RFFE (520)) and a transmission antenna (e.g., the first antenna (322) or the second antenna (324)), as shown in FIG. 5.

[0142] For example, if the processor (300) determines that the processor (300) supports a function of switching a transmission antenna for a frequency band associated with the i-th cell, it may determine whether the transmission antenna for the frequency band associated with the i-th cell can be switched based on a communication status of the electronic device (101). For example, the communication status of the electronic device (101) may include at least one of the use of DSDA, the use of dual connectivity (DC), or the priority of a communication method.

[0143] For example, if the processor (300) supports DSDA, it can determine whether wireless communication with the ith cell associated with the first SIM (subscriber identity module) and wireless communication with the second SIM are substantially performed simultaneously. If the processor (300) performs wireless communication with the first SIM and the second SIM, it can determine whether an antenna (or RFFE) that can be used as a transmit antenna for wireless communication associated with the first SIM through switching of transmit antennas is being used for wireless communication associated with the second SIM. If an antenna (or RFFE) that can be used as a transmit antenna for the first SIM through switching of transmit antennas is being used for wireless communication associated with the second SIM, the processor (300) can determine that switching of transmit antennas for wireless communication with the ith cell associated with the first SIM is restricted. When the processor (300) is not using an antenna (or RFFE) that can be used as a transmission antenna of the first SIM through switching of the transmission antenna in wireless communication related to the second SIM, the processor (300) may determine that switching of the transmission antenna for wireless communication with the ith cell related to the first SIM is possible. When the processor (300) is not performing wireless communication related to the second SIM, the processor (300) may determine that switching of the transmission antenna for wireless communication with the ith cell related to the first SIM is possible.

[0144] For example, when performing EN-DC with the i-th cell, the processor (300) can check whether an antenna (or RFFE) that can be used as a transmission antenna of the first communication method (e.g., LTE) is being used for wireless communication of the second communication method (e.g., NR) through switching of the transmission antenna. When the antenna (or RFFE) that can be used as a transmission antenna of the first communication method is being used for wireless communication of the second communication method through switching of the transmission antenna, the processor (300) can determine that switching of the transmission antenna of the first communication method is restricted. When the antenna (or RFFE) that can be used as a transmission antenna of the first communication method is not being used for wireless communication of the second communication method through switching of the transmission antenna, the processor (300) can determine that switching of the transmission antenna of the first communication method is possible.

[0145] For example, when the processor (300) is using an antenna (or RFFE) that can be used as a transmission antenna of a first communication method (e.g., LTE) for wireless communication of a second communication method (e.g., NR) through switching of transmission antennas during EN-DC with the i-th cell, the processor (300) can check the priorities of the first communication method and the second communication method. When the priority of the second communication method is higher than the priority of the first communication method, the processor (300) can determine that switching of the transmission antenna of the first communication method is restricted. When the priority of the first communication method is higher than the priority of the second communication method, the processor (300) can determine that switching of the transmission antenna of the first communication method is possible.

[0146] According to one embodiment, when an electronic device (e.g., electronic device (101)) or a processor (e.g., processor (120 or 300)) determines that switching of a transmission antenna associated with an i-th cell is possible (e.g., 'Yes' in operation 803), in operation 805, the electronic device (101) may use the channel state of the first antenna (322) (e.g., PRx (primary receive) antenna) and the channel state of the second antenna (324) (e.g., DRx (diversity receive) antenna) to check the channel state of the electronic device (101) associated with the i-th cell. For example, when the processor (300) determines that switching of a transmission antenna associated with the i-th cell is possible, the processor (300) may select a higher channel state (or a good channel state) among the channel states of the first receiving antenna (e.g., PRx antenna) and the second receiving antenna (e.g., DRx antenna) as the channel state of the electronic device (101) associated with the i-th cell. For example, the channel state of a first receive antenna (e.g., PRx antenna) and the channel state of a second receive antenna (e.g., DRx antenna) can be identified (or estimated) through the first receive antenna (e.g., PRx antenna) and the second receive antenna (e.g., DRx antenna) based on the occurrence of a measurement-related event set based on the acquisition of measurement-related information. For example, the measurement-related event can be generated periodically based on the measurement-related information. For example, the measurement-related event can also be generated based on a channel state of an electronic device (101) associated with a serving cell and a designated neighbor measurement reference value set based on the measurement-related information. For example, the channel state of the first receive antenna (e.g., the first antenna (322)) can represent the channel state of the ith cell measured through the first receive antenna. For example, the channel state of the second receiving antenna (e.g., the second antenna (324)) may represent the channel state of the i-th cell measured through the second receiving antenna.For example, the channel state of the electronic device (101) associated with the i-th cell may represent the channel state between the electronic device (101) and the i-th cell, which is measured (or estimated) by the electronic device (101).

[0147] For example, if the processor (300) determines that the i-th cell supports the second frequency band (e.g., N3 band of NR) and that switching of the transmission antenna of the i-th cell is possible, as shown in Table 3 below, among the channel state (e.g., about -125 dBm) of the first antenna (322) (e.g., Rx0) of the N3 band and the channel state (e.g., about -115 dBm) of the second antenna (324) (e.g., Rx1), the channel state (e.g., about -115 dBm) of the second antenna (324) having a high channel state (or good channel state) may be selected as the channel state (e.g., about -115 dBm) of the electronic device (101) associated with the i-th cell. For example, the channel condition may include at least one of received signal strength indication (RSSI), reference signal received quality (RSRQ), reference signal received power (RSRP), signal to noise ratio (SNR), signal to interference and noise ratio (SINR), quality of service (QoS), block error rate (BLER), or bit error rate (BER).

[0148] Frequency Band Reception Antenna Channel Status (RSRP) N3Rx0- 125 dBm Rx1- 115 dBm N5Rx0- 125 dBm Rx1- 115 dBm

[0149] According to one embodiment, when the electronic device (e.g., electronic device (101)) or the processor (e.g., processor (120 or 300)) determines that switching of the transmission antenna associated with the i-th cell is not possible (e.g., 'No' in operation 803), in operation 807, the electronic device (101) may use the channel state of the first antenna (322) (e.g., PRx (primary receive) antenna) to check the channel state of the electronic device (101) associated with the i-th cell. For example, when the processor (300) determines that switching of the transmission antenna associated with the i-th cell is not possible, the processor (300) may use the channel state of the first receive antenna (e.g., PRx antenna) to check the channel state of the electronic device (101) associated with the i-th cell. For example, if the processor (300) determines that the i-th cell supports the first frequency band (e.g., N5 band of NR) and switching of the transmission antenna of the i-th cell is restricted (or impossible), the processor (300) may select the channel state (e.g., about -125 dBm) of the first antenna (322) (e.g., Rx0) of the N5 band among the channel state (e.g., about -125 dBm) and the second antenna (324) (e.g., Rx1) (e.g., about -115 dBm) in Table 3 as the channel state of the electronic device (101) associated with the i-th cell.

[0150] According to one embodiment, an electronic device (e.g., electronic device (101)) or a processor (e.g., processor (120 or 300)) may, at operation 809, determine whether measurements have been performed on all cells for which measurements are to be performed based on measurement-related information.

[0151] According to one embodiment, if the electronic device (e.g., electronic device (101)) or processor (e.g., processor (120 or 300)) has not performed measurements on all cells for which measurements are to be performed (e.g., 'No' in operation 809), then in operation 811, the electronic device may update the index (e.g., i) of the cell for which measurements are to be performed (e.g., i++).

[0152] According to one embodiment, when an electronic device (e.g., electronic device (101)) or a processor (e.g., processor (120 or 300)) updates an index (e.g., i) of a cell for performing measurement, the electronic device (101) may check a channel state associated with a cell having an updated cell index. For example, the processor (300) may check a channel state associated with a cell having an updated cell index through operations 803 to 807 of FIG. 8. When the processor (300) checks the channel state associated with the electronic device (101) associated with a cell having an updated cell index, the processor (300) may check whether measurement has been performed on all cells for performing measurement based on information related to measurement, in operation 809.

[0153] According to one embodiment, when an electronic device (e.g., electronic device (101)) or a processor (e.g., processor (120 or 300)) has performed measurements on all cells for which measurements are to be performed (e.g., 'Yes' in operation 809), in operation 813, the electronic device may determine whether a channel state of the electronic device associated with the cells on which measurements were performed (e.g., measurement results of the cells) satisfies a specified measurement reporting condition. For example, the specified measurement reporting condition may include a first condition (e.g., A3 event) that determines whether the channel state of the electronic device (101) associated with the neighboring cell is equal to or greater than a specified first measurement reporting criterion value than the channel state of the electronic device (101) associated with the serving cell, a second condition (e.g., A5 event) that determines whether the channel state of the electronic device (101) associated with the serving cell is equal to or less than a specified second measurement reporting criterion value and the channel state of the electronic device (101) associated with the neighboring cell exceeds a specified third measurement reporting criterion value, or a third condition (e.g., A4 event) that determines whether the channel state of the electronic device (101) associated with the neighboring cell exceeds a specified fourth measurement reporting criterion value.

[0154] According to one embodiment, when an electronic device (e.g., electronic device (101)) or a processor (e.g., processor (120 or 300)) determines that a channel state of an electronic device (e.g., measurement results of cells) associated with cells that have performed measurements satisfies a specified measurement reporting condition (e.g., 'Yes' in operation 813), in operation 815, the processor may transmit the measurement results for the cells that have performed measurements to a base station (or network, serving cell). For example, when a first condition is set as a measurement reporting condition, if there is a neighboring cell among at least one neighboring cell having a channel state higher than a specified first measurement reporting threshold value than a channel state of the electronic device (101) associated with the serving cell, the processor may determine that the measurement reporting condition is satisfied. If there is no neighboring cell among at least one neighboring cell having a channel state higher than a specified first measurement reporting threshold value than a channel state of the electronic device (101) associated with the serving cell, the processor may determine that the measurement reporting condition is not satisfied.

[0155] For example, when the second condition is set as a measurement report condition, the processor (300) may determine that the measurement report condition is satisfied if the channel state information of the electronic device (101) related to the serving cell is less than the specified second measurement report reference value and there is at least one neighboring cell among the neighboring cells having a channel state equal to or greater than the specified third measurement report reference value. The processor (300) may determine that the measurement report condition is not satisfied if the channel state information of the electronic device (101) related to the serving cell is equal to or greater than the specified second measurement report reference value or there is no neighboring cell among the at least one neighboring cell having a channel state equal to or greater than the specified third measurement report reference value.

[0156] For example, if the third condition is set as a measurement report condition, the processor (300) may determine that the measurement report condition is satisfied if there is at least one neighboring cell among the neighboring cells that has a channel state equal to or higher than the designated fourth measurement report reference value. If there is no neighboring cell among the neighboring cells that has a channel state equal to or higher than the designated fourth measurement report reference value, the processor (300) may determine that the measurement report condition is not satisfied.

[0157] According to one embodiment, an electronic device (e.g., electronic device (101)) or a processor (e.g., processor (120 or 300)) may terminate an embodiment for measurement reporting when it determines that a channel state of the electronic device associated with cells on which measurements were performed (e.g., measurement results of the cells) does not satisfy a specified measurement reporting condition (e.g., 'No' in operation 813). For example, when the processor (300) determines that the measurement results of the cells for which measurements are performed do not satisfy a specified measurement reporting condition, it may control the communication circuit (310) to limit measurement reporting for channel state information.

[0158] According to one embodiment, the electronic device (101) or processor (e.g., processor (120 or 300)) may use the first antenna (322) (e.g., PRx) as a transmit antenna of the electronic device (101) when a handover or cell reselection to a cell is determined based on the channel status of the first antenna (322) (e.g., PRx) based on a channel measurement report.

[0159] According to one embodiment, when a handover or cell reselection to a cell that has set a channel state based on a channel state of the second antenna (324) (e.g., DRx) is determined in a state where switching of the transmission antenna is possible, the electronic device (101) or the processor (e.g., the processor (300)) may switch the transmission antenna of the electronic device (101) from the first antenna (322) (e.g., PRx) to the second antenna (324). For example, the processor (300) may control the communication circuit (310) to switch the transmission antenna of the electronic device (101) from the first antenna (322) (e.g., PRx) to the second antenna (324) when a difference (or difference value) between the channel state of the first antenna (322) (e.g., PRx) and the channel state of the second antenna (324) (e.g., DRx) satisfies a specified switching condition. For example, a state satisfying a specified switching condition may include a state in which a difference (or difference value) between a channel state of a first antenna (322) (e.g., PRx) and a channel state of a second antenna (324) (e.g., DRx) exceeds a specified first reference difference value (e.g., about 5 dB). For example, if the difference (or difference value) between the channel state of the first antenna (322) (e.g., PRx) and the channel state of the second antenna (324) (e.g., DRx) does not satisfy the specified switching condition, the processor (300) may control the communication circuit (310) to maintain the transmitting antenna of the electronic device (101) as the first antenna (322) (e.g., PRx). For example, a state in which a specified switching condition is not satisfied may include a state in which the difference (or difference value) between the channel state of the first antenna (322) (e.g., PRx) and the channel state of the second antenna (324) (e.g., DRx) is less than or equal to a specified first reference difference value (e.g., about 5 dB).For example, the processor (300) may control the communication circuit (310) to switch the transmitting antenna of the electronic device (101) from the first antenna (322) (e.g., PRx) to the second antenna (324) regardless of whether the difference (or difference value) between the channel state of the first antenna (322) (e.g., PRx) and the channel state of the second antenna (324) (e.g., DRx) satisfies a specified switching condition.

[0160] FIG. 9 is a flowchart (900) for cell reselection in an electronic device according to one embodiment. In the following embodiments, the operations may be performed sequentially, but are not necessarily performed sequentially. For example, the order of the operations may be changed, and at least two operations may be performed in parallel. For example, the electronic device of FIG. 9 may be the electronic device (101) of FIG. 1, FIG. 2, FIG. 3, FIG. 4, or FIG. 5.

[0161] According to one embodiment referring to FIG. 9, an electronic device (e.g., electronic device 101) or a processor (e.g., processor 120 of FIG. 1 or processor 300 of FIG. 3) may, in operation 901, obtain information related to measurement in an RRC standby state from a serving cell. For example, the information related to measurement may include at least one of an index of at least one cell for the electronic device (101) to perform measurement, a frequency band of at least one cell, or a designated measurement reporting condition. For example, the information related to measurement may be identified in an RRC (radio resource control) reconfiguration message or system information (e.g., system information block (SIB)) received from a base station.

[0162] According to one embodiment, an electronic device (e.g., electronic device (101)) or a processor (e.g., processor (120 or 300)) may, in operation 903, determine whether switching of a transmit antenna for a frequency band of an i-th cell (e.g., a serving cell or a neighboring cell) is possible. For example, the processor (300) may determine whether switching of a transmit antenna for a frequency band associated with the i-th cell is possible based on antenna-related information (e.g., RFC) stored in a memory (330). For example, the processor (300) may determine whether the transmission antenna for the frequency band associated with the i-th cell can be switched through a separate module (e.g., TRM) that manages resources of the communication circuit (310) (e.g., RFIC (400) and / or RFFE (410) of FIG. 4 or RFIC (500), first RFFE (510) and / or second RFFE (520) of FIG. 5) or resources of antennas (e.g., first antenna (322) and / or second antenna (324)). For example, i is an index of cells for performing measurements in the electronic device (101) and may include 0 (or 1) as an initial value. For example, the initial value of i (e.g., 0 or 1) may represent a serving cell of the electronic device (101).

[0163] For example, the processor (300) can check whether the processor supports a switching function of a transmission antenna for a frequency band associated with the i-th cell. For example, a state in which the switching function of the transmission antenna is determined to be supported may include a state in which there are multiple transmission antennas (e.g., the first antenna (322) and the second antenna (324) of FIG. 3) arranged in different areas that support the frequency band associated with the i-th cell. For example, a state in which the switching function of the transmission antenna is determined not to be supported may include a state in which there is one transmission antenna (e.g., the first antenna (322) or the second antenna (324) of FIG. 3) that supports the frequency band associated with the i-th cell.

[0164] For example, if the processor (300) determines that the switching function of the transmission antenna for the frequency band associated with the i-th cell is not supported, it may determine that the switching of the transmission antenna for the frequency band associated with the i-th cell is restricted. For example, the switching function of the transmission antenna may include at least one of ASdiv, which switches a transmission antenna (e.g., the first antenna (322) or the second antenna (324)) connected to the RFFE (410), as shown in FIG. 4, or a transmission device hopping scheme, which switches an RFFE (e.g., the first RFFE (510) or the second RFFE (520)) and a transmission antenna (e.g., the first antenna (322) or the second antenna (324)), as shown in FIG. 5.

[0165] For example, if the processor (300) determines that the processor (300) supports a function of switching a transmission antenna for a frequency band associated with the i-th cell, it may determine whether the transmission antenna for the frequency band associated with the i-th cell can be switched based on a communication status of the electronic device (101). For example, the communication status of the electronic device (101) may include at least one of the use of DSDA, the use of dual connectivity (DC), or the priority of a communication method.

[0166] For example, if the processor (300) supports DSDA, it can determine whether wireless communication with the ith cell associated with the first SIM (subscriber identity module) and wireless communication with the second SIM are substantially performed simultaneously. If the processor (300) performs wireless communication with the first SIM and the second SIM, it can determine whether an antenna (or RFFE) that can be used as a transmit antenna for wireless communication associated with the first SIM through switching of transmit antennas is being used for wireless communication associated with the second SIM. If an antenna (or RFFE) that can be used as a transmit antenna for the first SIM through switching of transmit antennas is being used for wireless communication associated with the second SIM, the processor (300) can determine that switching of transmit antennas for wireless communication with the ith cell associated with the first SIM is restricted. When the processor (300) is not using an antenna (or RFFE) that can be used as a transmission antenna of the first SIM through switching of the transmission antenna in wireless communication related to the second SIM, the processor (300) may determine that switching of the transmission antenna for wireless communication with the ith cell related to the first SIM is possible. When the processor (300) is not performing wireless communication related to the second SIM, the processor (300) may determine that switching of the transmission antenna for wireless communication with the ith cell related to the first SIM is possible.

[0167] For example, when performing EN-DC with the i-th cell, the processor (300) can check whether an antenna (or RFFE) that can be used as a transmission antenna of the first communication method (e.g., LTE) is being used for wireless communication of the second communication method (e.g., NR) through switching of the transmission antenna. When the antenna (or RFFE) that can be used as a transmission antenna of the first communication method is being used for wireless communication of the second communication method through switching of the transmission antenna, the processor (300) can determine that switching of the transmission antenna of the first communication method is restricted. When the antenna (or RFFE) that can be used as a transmission antenna of the first communication method is not being used for wireless communication of the second communication method through switching of the transmission antenna, the processor (300) can determine that switching of the transmission antenna of the first communication method is possible.

[0168] For example, when the processor (300) is using an antenna (or RFFE) that can be used as a transmission antenna of a first communication method (e.g., LTE) for wireless communication of a second communication method (e.g., NR) through switching of transmission antennas during EN-DC with the i-th cell, the processor (300) can check the priorities of the first communication method and the second communication method. When the priority of the second communication method is higher than the priority of the first communication method, the processor (300) can determine that switching of the transmission antenna of the first communication method is restricted. When the priority of the first communication method is higher than the priority of the second communication method, the processor (300) can determine that switching of the transmission antenna of the first communication method is possible.

[0169] According to one embodiment, when an electronic device (e.g., electronic device (101)) or a processor (e.g., processor (120 or 300)) determines that switching of a transmission antenna associated with an i-th cell is possible (e.g., 'Yes' in operation 903), in operation 905, the electronic device (101) may check a channel state associated with the i-th cell using a channel state of a first antenna (322) (e.g., a PRx (primary receive) antenna) and a channel state of a second antenna (324) (e.g., a DRx (diversity receive) antenna). For example, if the processor (300) determines that switching of the transmission antenna associated with the i-th cell is possible, the processor (300) may select a higher channel state (or good channel state) (e.g., -107.19 dBm) among the channel state (e.g., -122 dBm) of the first receiving antenna (e.g., PRx antenna) and the channel state (e.g., -107.19 dBm) of the second receiving antenna (e.g., DRx antenna) as the channel state of the electronic device (101) associated with the i-th cell. For example, the channel state of the first receiving antenna (e.g., PRx antenna) and the channel state of the second receiving antenna (e.g., DRx antenna) may be confirmed (or estimated) through the first receiving antenna (e.g., PRx antenna) and the second receiving antenna (e.g., DRx antenna) based on the occurrence of a measurement-related event set based on the acquisition of measurement-related information in the RRC standby state. For example, a measurement-related event may be generated periodically based on measurement-related information and / or may be generated based on a channel state of an electronic device (101) associated with a serving cell and a designated neighbor measurement reference value set based on measurement-related information. For example, a channel state of a first receiving antenna (e.g., the first antenna (322)) may indicate a channel state of an ith cell measured through the first receiving antenna. For example, a channel state of a second receiving antenna (e.g., the second antenna (324)) may indicate a channel state of an ith cell measured through the second receiving antenna.For example, the channel state of the electronic device (101) related to the i-th cell may indicate the channel state between the electronic device (101) and the i-th cell, which is measured (or estimated) by the electronic device (101). For example, the channel state may include at least one of a received signal strength indication (RSSI), a reference signal received quality (RSRQ), a reference signal received power (RSRP), a signal to noise ratio (SNR), a signal to interference and noise ratio (SINR), a quality of service (QoS), a block error rate (BLER), or a bit error rate (BER).

[0170] According to one embodiment, when the electronic device (e.g., electronic device (101)) or the processor (e.g., processor (120 or 300)) determines that switching of the transmit antenna associated with the i-th cell is not possible (e.g., 'No' in operation 903), in operation 907, the electronic device (101) may use the channel state (e.g., -122 dBm) of the first antenna (322) (e.g., PRx (primary receive) antenna) to check the channel state of the electronic device (101) associated with the i-th cell. For example, when the processor (300) determines that switching of the transmit antenna associated with the i-th cell is not possible, the processor (300) may use the channel state of the first receive antenna (e.g., PRx antenna) to check the channel state of the electronic device (101) associated with the i-th cell.

[0171] According to one embodiment, an electronic device (e.g., electronic device 101) or a processor (e.g., processor 120 or 300) may determine, at operation 909, whether measurement has been performed on at least one cell for performing measurement based on measurement-related information. For example, the at least one cell for performing measurement may include a serving cell if a channel state of the electronic device (101) associated with the serving cell does not satisfy a specified neighbor measurement condition. For example, a state of not satisfying a specified neighbor measurement condition may include a state in which the channel state of the electronic device (101) associated with the serving cell exceeds a specified neighbor measurement reference value (e.g., approximately -122 dBm) set based on the measurement-related information. For example, the at least one cell for performing measurement may include a serving cell and at least one neighbor cell included in the measurement-related information if the channel state of the electronic device (101) associated with the serving cell satisfies a specified neighbor measurement condition. For example, a state that satisfies a specified neighbor measurement condition may include a state in which the channel state of an electronic device (101) associated with a serving cell is lower than or equal to a specified neighbor measurement reference value (e.g., approximately -122 dBm) set based on information related to the measurement.

[0172] According to one embodiment, if the electronic device (e.g., electronic device (101)) or processor (e.g., processor (120 or 300)) has not performed measurements on all cells for which measurements are to be performed (e.g., 'No' in operation 909), then in operation 911, the electronic device may update the index (e.g., i) of the cell for which measurements are to be performed (e.g., i++).

[0173] According to one embodiment, when an electronic device (e.g., electronic device (101)) or a processor (e.g., processor (120 or 300)) updates an index (e.g., i) of a cell for performing measurement, the electronic device (101) may check a channel state associated with a cell having an updated cell index. For example, the processor (300) may check a channel state associated with a cell having an updated cell index through operations 903 to 907 of FIG. 9. When the processor (300) checks the channel state associated with the electronic device (101) associated with a cell having an updated cell index, the processor (300) may check whether measurement has been performed on all cells for performing measurement based on information related to measurement, in operation 909.

[0174] According to one embodiment, when an electronic device (e.g., electronic device 101) or a processor (e.g., processor 120 or 300) performs measurements on all cells for which measurements are to be performed (e.g., 'Yes' in operation 909), in operation 913, the electronic device may determine whether a channel state of the electronic device related to the cells on which measurements were performed (e.g., measurement results of the cells) satisfies a specified cell reselection condition. For example, a state of satisfying a specified cell reselection condition may include a state in which a channel state of a serving cell is less than or equal to a specified first cell reselection criterion channel value, and a channel state of a neighboring cell is greater than or equal to a specified second cell reselection criterion channel value. For example, a state of not satisfying a specified cell reselection condition may include a state in which a channel state of a serving cell is greater than or equal to a specified first cell reselection criterion channel value, or a state in which a channel state of a neighboring cell is less than or equal to a specified second cell reselection criterion channel value. For example, a state in which a designated cell reselection condition is satisfied may include a state in which the channel status of the neighboring cell is greater than or equal to a designated second reference difference value (e.g., approximately 8 dB) compared to the channel status of the serving cell. For example, a state in which a designated cell reselection condition is not satisfied may include a state in which the channel status of the neighboring cell is less than or equal to a designated second reference difference value compared to the channel status of the serving cell. For example, a state in which a designated cell reselection condition is satisfied may include a state in which the channel status of the neighboring cell is greater than or equal to a designated second cell reselection reference channel value and the channel status of the neighboring cell is greater than or equal to a designated second reference difference value compared to the channel status of the serving cell. For example, a state in which a designated cell reselection condition is not satisfied may include a state in which the channel status of the neighboring cell is less than or equal to a designated second cell reselection reference channel value or a state in which the channel status of the neighboring cell is less than or equal to a designated second reference difference value compared to the channel status of the serving cell. For example, the designated second reference difference value may be identified through system information (e.g., SIB 5).

[0175] According to one embodiment, when an electronic device (e.g., electronic device (101)) or a processor (e.g., processor (120 or 300)) determines that a channel state of the electronic device (e.g., measurement results of cells) associated with cells on which measurements were performed satisfies a specified cell reselection condition (e.g., 'Yes' in operation 913), in operation 915, the electronic device may switch (or change) a serving cell of the electronic device (101) based on the channel state of the electronic device (e.g., measurement results of cells) associated with cells on which measurements were performed. For example, the processor (300) may set a neighboring cell with the highest channel state among neighboring cells as the serving cell of the electronic device (101). For example, the processor (300) may determine whether each neighboring cell satisfies a specified cell reselection condition based on a priority identified through system information (e.g., SIB 5). The processor (300) may set a neighboring cell that satisfies the specified cell reselection condition first among neighboring cells as the serving cell.

[0176] According to one embodiment, an electronic device (e.g., electronic device (101)) or a processor (e.g., processor (120 or 300)) may terminate an embodiment for cell reselection when it determines that a channel state of the electronic device (e.g., measurement results of the cells) associated with the cells on which measurements were performed does not satisfy a specified cell reselection condition (e.g., 'No' in operation 913). For example, when the processor (300) determines that the measurement results of the cells on which measurements were performed do not satisfy a specified cell reselection condition, it may control the communication circuit (310) so that the electronic device (101) maintains the serving cell.

[0177] According to one embodiment, the electronic device (101) or processor (e.g., processor (120 or 300)) may perform a tracking area (TA) update procedure when a tracking area identifier (TAI) of a serving cell of the electronic device (101) changes through cell reselection.

[0178] According to one embodiment, the electronic device (101) or a processor (e.g., processor (120 or 300)) switches a second cell, which has set a channel state based on a channel state of a second antenna (324) (e.g., DRx), to the serving cell of the electronic device (101), and when performing a TA update procedure in a state where switching of the transmission antenna of the second cell is possible, the transmission antenna of the electronic device (101) may be switched from the first antenna (322) (e.g., PRx) to the second antenna (324). For example, the processor (300) may control the communication circuit (310) to switch the transmitting antenna of the electronic device (101) from the first antenna (322) (e.g., PRx) to the second antenna (324) when the difference (or difference value) between the channel state of the first antenna (322) (e.g., PRx) and the channel state of the second antenna (324) (e.g., DRx) satisfies a specified switching condition. The communication circuit (310) may perform TA update through the second antenna (324). As an example, a state that satisfies the specified switching condition may include a state in which the difference (or difference value) between the channel state of the first antenna (322) (e.g., PRx) and the channel state of the second antenna (324) (e.g., DRx) exceeds a specified first reference difference value (e.g., about 5 dB). For example, the processor (300) may control the communication circuit (310) to maintain the transmitting antenna of the electronic device (101) as the first antenna (322) (e.g., PRx) when the difference (or difference value) between the channel state of the first antenna (322) (e.g., PRx) and the channel state of the second antenna (324) (e.g., DRx) does not satisfy a specified switching condition. The communication circuit (310) may perform TA update through the first antenna (322). As an example, the state of not satisfying the specified switching condition may include a state in which the difference (or difference value) between the channel state of the first antenna (322) (e.g., PRx) and the channel state of the second antenna (324) (e.g., DRx) is less than or equal to a specified first reference difference value (e.g., about 5 dB).For example, the processor (300) may control the communication circuit (310) to switch the transmitting antenna of the electronic device (101) from the first antenna (322) (e.g., PRx) to the second antenna (324) regardless of whether the difference (or difference value) between the channel state of the first antenna (322) (e.g., PRx) and the channel state of the second antenna (324) (e.g., DRx) satisfies a specified switching condition.

[0179] According to one embodiment, the electronic device (101) or the processor (e.g., the processor (120 or 300)) may change (e.g., delay) the cell reselection timing of the electronic device (101) by checking the channel state information of the electronic device (101) associated with the i-th cell based on whether switching of the transmission antenna for the frequency band of the i-th cell is possible. For example, when switching of the transmission antenna associated with the serving cell is possible, the processor (300) may select a higher channel state (or good channel state) (e.g., -107.19 dBm) among the channel state (e.g., -122 dBm) of the first receiving antenna (e.g., PRx antenna) and the channel state (e.g., -107.19 dBm) of the second receiving antenna (e.g., DRx antenna) as the channel state of the electronic device (101) associated with the serving cell. When switching of a transmitting antenna associated with a serving cell is restricted (or impossible), the processor (300) may select the channel state (e.g., -122 dBm) of the first receiving antenna (e.g., PRx antenna) as the channel state of the electronic device (101) associated with the serving cell. When the processor (300) sets the channel state of the electronic device (101) associated with the serving cell by considering the channel state of the first receiving antenna, the processor (300) may perform measurements and / or cell reselection associated with a neighboring cell regardless of the channel state of the second receiving antenna. When the processor (300) sets the channel state of the electronic device (101) associated with the serving cell by considering the channel states of the first and second receiving antennas, the processor (300) may limit the performance of measurements and / or cell reselection associated with a neighboring cell by considering the channel state of the second receiving antenna, which is better than the channel state of the first receiving antenna.

[0180] FIG. 10 is a flowchart (1000) for checking the channel status of a cell in an electronic device according to one embodiment. For example, at least a portion of FIG. 10 may include detailed operations of operations 903 to 907 of FIG. 9. In the following embodiments, the operations may be performed sequentially, but are not necessarily performed sequentially. For example, the order of the operations may be changed, and at least two operations may be performed in parallel. For example, the electronic device of FIG. 10 may be the electronic device (101) of FIG. 1, FIG. 2, FIG. 3, FIG. 4, or FIG. 5.

[0181] According to one embodiment referring to FIG. 10, when an electronic device (e.g., electronic device (101)) or a processor (e.g., processor (120) of FIG. 1 or processor (300) of FIG. 3) obtains information related to measurement in an RRC standby state (e.g., operation 901 of FIG. 9), in operation 1001, the electronic device may perform measurement on an i-th cell (e.g., a serving cell or a neighboring cell) through a plurality of antennas (e.g., first antenna (322) and second antenna (324) of FIG. 3) in the RRC standby state. For example, when the processor (300) determines that a measurement period (or measurement time) has arrived based on the information related to measurement in the RRC standby state, the processor (300) may control the communication circuit (310) to perform measurement on the serving cell through the plurality of antennas. For example, if the channel state of the electronic device (101) associated with the serving cell satisfies a specified neighbor cell measurement condition, the processor (300) may perform measurement on at least one neighbor cell identified in the measurement-related information. For example, a state of satisfying the specified neighbor measurement condition may include a state in which the channel state of the electronic device (101) associated with the serving cell is lower than or equal to a specified neighbor measurement reference value (e.g., approximately -122 dBm) set based on the measurement-related information. For example, the measurement-related information may be identified in an RRC message or system information (e.g., SUB 3).

[0182] For example, the processor (300) may limit measurements for neighboring cells if the channel status of the electronic device (101) associated with the serving cell does not satisfy a specified neighboring cell measurement condition. For example, a state of not satisfying a specified neighboring measurement condition may include a state in which the channel status of the electronic device (101) associated with the serving cell exceeds a specified neighboring measurement reference value (e.g., approximately -122 dBm) set based on information related to the measurement.

[0183] According to one embodiment, an electronic device (e.g., electronic device (101)) or a processor (e.g., processor (120 or 300)) may determine, in operation 1003, whether a measurement result for an ith cell satisfies a specified measurement condition. For example, the processor (300) may determine whether a channel state of a first receive antenna (e.g., a PRx (primary receive) antenna) (e.g., the first antenna (322)) for the ith cell satisfies a specified measurement condition. For example, a state in which the specified measurement condition is not satisfied may include a state in which the channel state of the first receive antenna (e.g., the PRx antenna) is lower than or equal to a specified measurement reference value (e.g., -115 dBm). For example, a state in which the specified measurement condition is satisfied may include a state in which the channel state of the first receive antenna (e.g., the PRx) exceeds a specified measurement reference value (e.g., -115 dBm). For example, the first receive antenna may include an antenna that performs a transmission function in the electronic device (101).

[0184] According to one embodiment, when the measurement result for the i-th cell satisfies a specified measurement condition (e.g., 'Yes' in operation 1003), the electronic device (e.g., electronic device (101)) or the processor (e.g., processor (120 or 300)) may, in operation 1005, determine the channel state of the electronic device (101) associated with the i-th cell using the channel state of the first antenna (322) (e.g., PRx antenna) and the channel state of the second antenna (324) (e.g., DRx antenna). For example, when the measurement result for the i-th cell satisfies the specified measurement condition, the processor (300) may select a higher channel state (or a good channel state) among the channel states of the first receiving antenna (e.g., PRx antenna) and the second receiving antenna (e.g., DRx antenna) as the channel state of the electronic device (101) associated with the i-th cell. For example, the channel state of the first receiving antenna (e.g., the first antenna (322)) may represent the channel state of the ith cell measured through the first receiving antenna. For example, the channel state of the second receiving antenna (e.g., the second antenna (324)) may represent the channel state of the ith cell measured through the second receiving antenna.

[0185] According to one embodiment, if the measurement result for the ith cell does not satisfy a specified measurement condition (e.g., 'No' in operation 1003), the electronic device (e.g., electronic device (101)) or the processor (e.g., processor (120 or 300)) may determine whether switching of the transmit antenna for the frequency band of the ith cell (e.g., serving cell or neighboring cell) is possible in operation 1007. For example, the processor (300) may determine whether switching of the transmit antenna for the frequency band associated with the ith cell is possible based on antenna-related information (e.g., RFC) stored in the memory (330). For example, the processor (300) may determine whether the transmission antenna for the frequency band associated with the i-th cell can be switched through a separate module (e.g., TRM) that manages resources of the communication circuit (310) (e.g., RFIC (400) and / or RFFE (410) of FIG. 4 or RFIC (500), first RFFE (510) and / or second RFFE (520) of FIG. 5) or resources of antennas (e.g., first antenna (322) and / or second antenna (324)). For example, i is an index of cells for performing measurements in the electronic device (101) and may include 0 (or 1) as an initial value. For example, the initial value of i (e.g., 0 or 1) may represent a serving cell of the electronic device (101).

[0186] For example, the processor (300) can check whether the processor supports a switching function of a transmission antenna for a frequency band associated with the i-th cell. For example, a state in which the switching function of the transmission antenna is determined to be supported may include a state in which there are multiple transmission antennas (e.g., the first antenna (322) and the second antenna (324) of FIG. 3) arranged in different areas that support the frequency band associated with the i-th cell. For example, a state in which the switching function of the transmission antenna is determined not to be supported may include a state in which there is one transmission antenna (e.g., the first antenna (322) or the second antenna (324) of FIG. 3) that supports the frequency band associated with the i-th cell.

[0187] For example, if the processor (300) determines that the switching function of the transmission antenna for the frequency band associated with the i-th cell is not supported, it may determine that the switching of the transmission antenna for the frequency band associated with the i-th cell is restricted. For example, the switching function of the transmission antenna may include at least one of ASdiv, which switches a transmission antenna (e.g., the first antenna (322) or the second antenna (324)) connected to the RFFE (410), as shown in FIG. 4, or a transmission device hopping scheme, which switches an RFFE (e.g., the first RFFE (510) or the second RFFE (520)) and a transmission antenna (e.g., the first antenna (322) or the second antenna (324)), as shown in FIG. 5.

[0188] For example, if the processor (300) determines that the processor (300) supports a function of switching a transmission antenna for a frequency band associated with the i-th cell, it may determine whether the transmission antenna for the frequency band associated with the i-th cell can be switched based on a communication status of the electronic device (101). For example, the communication status of the electronic device (101) may include at least one of the use of DSDA, the use of dual connectivity (DC), or the priority of a communication method.

[0189] For example, if the processor (300) supports DSDA, it can determine whether wireless communication with the ith cell associated with the first SIM (subscriber identity module) and wireless communication with the second SIM are substantially performed simultaneously. If the processor (300) performs wireless communication with the first SIM and the second SIM, it can determine whether an antenna (or RFFE) that can be used as a transmit antenna for wireless communication associated with the first SIM through switching of transmit antennas is being used for wireless communication associated with the second SIM. If an antenna (or RFFE) that can be used as a transmit antenna for the first SIM through switching of transmit antennas is being used for wireless communication associated with the second SIM, the processor (300) can determine that switching of transmit antennas for wireless communication with the ith cell associated with the first SIM is restricted. When the processor (300) is not using an antenna (or RFFE) that can be used as a transmission antenna of the first SIM through switching of the transmission antenna in wireless communication related to the second SIM, the processor (300) may determine that switching of the transmission antenna for wireless communication with the ith cell related to the first SIM is possible. When the processor (300) is not performing wireless communication related to the second SIM, the processor (300) may determine that switching of the transmission antenna for wireless communication with the ith cell related to the first SIM is possible.

[0190] For example, when performing EN-DC with the i-th cell, the processor (300) can check whether an antenna (or RFFE) that can be used as a transmission antenna of the first communication method (e.g., LTE) is being used for wireless communication of the second communication method (e.g., NR) through switching of the transmission antenna. When the antenna (or RFFE) that can be used as a transmission antenna of the first communication method is being used for wireless communication of the second communication method through switching of the transmission antenna, the processor (300) can determine that switching of the transmission antenna of the first communication method is restricted. When the antenna (or RFFE) that can be used as a transmission antenna of the first communication method is not being used for wireless communication of the second communication method through switching of the transmission antenna, the processor (300) can determine that switching of the transmission antenna of the first communication method is possible.

[0191] For example, when the processor (300) is using an antenna (or RFFE) that can be used as a transmission antenna of a first communication method (e.g., LTE) for wireless communication of a second communication method (e.g., NR) through switching of transmission antennas during EN-DC with the i-th cell, the processor (300) can check the priorities of the first communication method and the second communication method. When the priority of the second communication method is higher than the priority of the first communication method, the processor (300) can determine that switching of the transmission antenna of the first communication method is restricted. When the priority of the first communication method is higher than the priority of the second communication method, the processor (300) can determine that switching of the transmission antenna of the first communication method is possible.

[0192] According to one embodiment, when an electronic device (e.g., electronic device (101)) or a processor (e.g., processor (120 or 300)) determines that switching of a transmission antenna associated with an i-th cell is possible (e.g., 'Yes' in operation 1007), in operation 1005, the processor may determine a channel state of the electronic device (101) associated with the i-th cell using a channel state of the first antenna (322) (e.g., PRx antenna) and a channel state of the second antenna (324) (e.g., DRx antenna). For example, when the processor (300) determines that switching of a transmission antenna associated with the i-th cell is possible although a measurement result for the i-th cell does not satisfy a specified measurement condition, the processor (300) may select a higher channel state (or a good channel state) among the channel states of the first receiving antenna (e.g., PRx antenna) and the second receiving antenna (e.g., DRx antenna) as the channel state of the electronic device (101) associated with the i-th cell.

[0193] According to one embodiment, when the electronic device (e.g., electronic device (101)) or the processor (e.g., processor (120 or 300)) determines that switching of the transmission antenna associated with the i-th cell is not possible (e.g., 'No' in operation 1007), in operation 1009, the processor may check the channel state of the electronic device (101) associated with the i-th cell using the channel state of the first antenna (322) (e.g., PRx (primary receive) antenna). For example, when the processor (300) determines that the measurement result for the i-th cell does not satisfy a specified measurement condition and switching of the transmission antenna associated with the i-th cell is not possible, the processor may check the channel state of the electronic device (101) associated with the i-th cell using the channel state of the first receive antenna (e.g., PRx antenna).

[0194] According to one embodiment, the electronic device (101) or processor (e.g., processor (120 or 300)) can check the channel state information of each cell (e.g., serving cell and neighboring cell) for performing measurements in an RRC standby state through operations 1001 to 1009 of FIG. 10.

[0195] According to one embodiment, the electronic device (101) or processor (e.g., processor (120 or 300)) may perform cell reselection as shown in FIG. 9 and / or FIG. 10 in an RRC inactive state.

[0196] According to one embodiment, a method of operating an electronic device (e.g., the electronic device (101) of FIG. 1, FIG. 2, FIG. 3, FIG. 4, or FIG. 5) having a plurality of antennas (e.g., the antenna module (197) of FIG. 1 or the plurality of antennas (320) of FIG. 3) may include an operation of checking whether switching of a transmission antenna related to a frequency band of the first cell is possible when a first cell is detected through a scan. According to one embodiment, the operating method of the electronic device may include an operation of, when it is determined that switching of the transmission antenna is possible, checking the channel state of the first cell measured in the electronic device using a first antenna (e.g., the first antenna (322) of FIG. 3) set as a transmission antenna related to a frequency band of the first cell among a plurality of antennas (e.g., the conductive patterns (231, 232, 233 and / or 234) of FIG. 2 or the plurality of antennas (320) of FIG. 3)) and a second antenna (e.g., the second antenna (324) of FIG. 3) different from the first antenna. According to one embodiment, the operating method of the electronic device may include an operation of, when it is determined that switching of the transmission antenna is limited, checking the channel state of the first cell measured in the electronic device using the channel state of the first cell measured through the first antenna. According to one embodiment, an operating method of an electronic device may include an operation of performing a RACH procedure with a first cell by using a first antenna or a second antenna used to determine a channel state of the first cell measured by the electronic device as a transmission antenna related to a frequency band of the first cell, when the channel state of the first cell measured by the electronic device satisfies a specified random access channel (RACH) condition or a specified cell selection condition.

[0197] According to one embodiment, the operation of determining whether switching of a transmission antenna is possible may include an operation of determining that switching of a transmission antenna associated with a frequency band of the first cell is possible when it is determined that a plurality of transmission antennas supporting the frequency band of the first cell are available based on at least one of a structure of an antenna supporting a frequency band of the first cell, a communication state associated with a plurality of subscriber identification modules, or a communication state based on DC (dual connectivity).

[0198] According to one embodiment, the operation of determining whether switching of the transmission antenna is possible may include an operation of determining whether switching of the transmission antenna associated with the frequency band of the first cell is possible when the first antenna and the second antenna, which are set as transmission antennas associated with the frequency band of the first cell, are arranged in different areas of the electronic device and the second antenna is determined to be available for data transmission in the frequency band of the first cell.

[0199] According to one embodiment, the operation of checking channel information of a first cell measured by an electronic device may include an operation of checking a first channel state of the first cell measured through a first antenna related to a frequency band of the first cell among a plurality of antennas and a second channel state of the first cell measured through a second antenna, when it is determined that switching of the transmission antenna is possible. According to one embodiment, the operation of checking channel information of the first cell measured by the electronic device may include an operation of determining a higher channel state among the first channel state and the second channel state as the channel state of the first cell measured by the electronic device.

[0200] According to one embodiment, a method of operating an electronic device may include, when the second channel state is determined as a channel state of a first cell measured by the electronic device, switching the second antenna to a transmission antenna related to a frequency band of the first cell based on a difference value between the first channel state and the second channel state.

[0201] According to one embodiment, a method of operating an electronic device may include an operation of determining that a specified RACH condition or a specified cell selection condition is satisfied when a channel state of a first cell measured by the electronic device exceeds a reference value related to a RACH identified in system information of the first cell.

[0202] According to one embodiment, the operating method of the electronic device may include an operation of acquiring measurement-related information from the first cell while being registered in the first cell. According to one embodiment, the operating method of the electronic device may include an operation of identifying a first cell and a second cell for performing measurement based on the measurement-related information. According to one embodiment, the operating method of the electronic device may include an operation of identifying a channel state of the first cell measured by the electronic device using a channel state of the first cell measured through a first antenna (322) set as a transmission antenna related to the frequency band of the first cell among a plurality of antennas (320) and a channel state of the first cell measured through a second antenna (324), when it is determined that switching of a transmission antenna for a frequency band related to the first cell is possible. According to one embodiment, the operating method of the electronic device may include an operation of checking a channel state of the first cell measured in the electronic device using a channel state of the first cell measured through the first antenna (322) when it is determined that switching of the transmission antenna for a frequency band associated with the first cell is restricted. According to one embodiment, the operating method of the electronic device may include an operation of checking a channel state of the second cell measured in the electronic device using a channel state of the second cell measured through the first antenna (322) set as a transmission antenna associated with the frequency band of the second cell among a plurality of antennas (320) and a channel state of the second cell measured through the second antenna (324) when it is determined that switching of the transmission antenna for a frequency band associated with the second cell is restricted. According to one embodiment, the operating method of the electronic device may include an operation of checking a channel state of the second cell measured in the electronic device using a channel state of the second cell measured through the first antenna (322) when it is determined that switching of the transmission antenna for a frequency band associated with the second cell is restricted.

[0203] According to one embodiment, the operating method of the electronic device may include an operation of determining whether a measurement reporting condition is satisfied based on at least one of a channel state of a first cell measured by the electronic device or a channel state of a second cell measured by the electronic device. According to one embodiment, the operating method of the electronic device may include an operation of transmitting at least one of the channel state of the first cell measured by the electronic device or the channel state of the second cell to the first cell when it is determined that the measurement reporting condition is satisfied.

[0204] According to one embodiment, the measurement reporting condition can be identified in a radio resource control (RRC) message received from the first cell.

[0205] According to one embodiment, the operating method of the electronic device may include an operation of identifying a first cell and a second cell for performing a measurement in an RRC (radio resource control) idle state based on information related to a measurement acquired from the first cell. According to one embodiment, the operating method of the electronic device may include an operation of identifying a channel state of the first cell measured in the electronic device (101) by using a channel state of the first cell measured through a first antenna (322) set as a transmission antenna related to the frequency band of the first cell among a plurality of antennas (320) in the RRC idle state and a channel state of the first cell measured through a second antenna (324), when it is determined that switching of a transmission antenna for a frequency band related to the first cell is possible. According to one embodiment, the method of operating an electronic device may include an operation of checking a channel state of a first cell measured in the electronic device (101) using a channel state of the first cell measured through a first antenna (322) in an RRC standby state when it is determined that switching of a transmission antenna for a frequency band related to a first cell is limited.

[0206] According to one embodiment, the operating method of the electronic device may include an operation of performing a measurement on the first cell through a plurality of antennas based on information related to a measurement acquired from the first cell. According to one embodiment, the operating method of the electronic device may include an operation of checking the channel state of the first cell measured in the electronic device (101) by using the channel state of the first cell measured through the first antenna (322) set as a transmission antenna related to a frequency band of the first cell among the plurality of antennas (320) and the channel state of the first cell measured through the second antenna (324), when the channel state of the first cell measured through the first antenna (322) set as a transmission antenna related to a frequency band of the first cell satisfies a specified measurement condition.

[0207] According to one embodiment, the operating method of the electronic device may include an operation of checking whether switching of the transmission antenna for the frequency band associated with the first cell is possible when the channel state of the first cell measured through the first antenna (322) set as the transmission antenna associated with the frequency band of the first cell does not satisfy a specified measurement condition.

[0208] According to one embodiment, the operating method of the electronic device may include an operation of checking the channel state of the second cell measured in the electronic device (101) using the channel state of the second cell measured through the first antenna (322) set as the transmitting antenna related to the frequency band of the second cell among the plurality of antennas (320) in an RRC standby state and the channel state of the second cell measured through the second antenna (324) when it is determined that switching of the transmitting antenna for the frequency band related to the second cell is possible. According to one embodiment, the operating method of the electronic device may include an operation of checking the channel state of the second cell measured in the electronic device (101) using the channel state of the second cell measured through the first antenna (322) in an RRC standby state when it is determined that switching of the transmitting antenna for the frequency band related to the second cell is limited.

[0209] According to one embodiment, the operating method of the electronic device may include an operation of performing a measurement on a second cell through a plurality of antennas. According to one embodiment, the operating method of the electronic device may include an operation of checking a channel state of the second cell measured in the electronic device (101) by using the channel state of the second cell measured through the first antenna (322) set as a transmission antenna related to a frequency band of the second cell among the plurality of antennas (320) and the channel state of the second cell measured through the second antenna (324), when the channel state of the second cell measured through the first antenna (322) set as a transmission antenna related to a frequency band of the second cell satisfies a specified measurement condition.

[0210] According to one embodiment, the method of operating the electronic device may include an operation of checking whether switching of the transmission antenna for the frequency band associated with the second cell is possible when the channel state of the second cell measured through the first antenna (322) set as the transmission antenna associated with the frequency band of the second cell does not satisfy a specified measurement condition.

[0211] According to one embodiment, a method of operating an electronic device may include an operation of changing a serving cell of the electronic device (101) when it is determined that a cell reselection condition is satisfied based on at least one of a channel state of a first cell measured by the electronic device (101) or a channel state of a second cell measured by the electronic device (101).

[0212] According to one embodiment, a non-transitory computer-readable storage medium (or computer program product) storing one or more programs may be described. According to one embodiment, one or more programs, when executed by at least one processor of an electronic device, when a first cell is detected through a scan, an operation of checking whether a transmission antenna related to a frequency band of the first cell can be switched; when it is determined that the switching of the transmission antenna is possible, an operation of checking a channel state of the first cell measured in the electronic device using a channel state of the first cell measured through a first antenna set as a transmission antenna related to the frequency band of the first cell among the plurality of antennas and a channel state of the first cell measured through a second antenna different from the first antenna; when it is determined that the switching of the transmission antenna is limited, an operation of checking a channel state of the first cell measured in the electronic device using the channel state of the first cell measured through the first antenna; and when the channel state of the first cell measured in the electronic device satisfies a designated random access channel (RACH) condition or a designated cell selection condition, an operation of determining a channel state of the first cell measured in the electronic device using the first antenna or the The instruction may include an operation for performing a RACH procedure with the first cell by using the second antenna as a transmit antenna related to the frequency band of the first cell.

[0213] According to one embodiment, one or more programs, when executed by at least one processor of an electronic device, perform the following operations: acquiring information related to measurement from a first cell while registered in the first cell; confirming the first cell and a second cell for performing measurement based on the information related to measurement; when it is determined that switching of a transmission antenna for a frequency band related to the first cell is possible, using a channel state of the first cell measured through a first antenna (322) set as a transmission antenna related to the frequency band of the first cell among the plurality of antennas (320) and a channel state of the first cell measured through the second antenna (324), when it is determined that switching of a transmission antenna for a frequency band related to the first cell is limited, using the channel state of the first cell measured through the first antenna (322), confirming a channel state of the first cell measured in the electronic device; and when it is determined that switching of a transmission antenna for a frequency band related to the second cell is limited, performing the following operations: If it is determined that switching of the transmission antenna for the band is possible, an operation of checking the channel state of the second cell measured in the electronic device using the channel state of the second cell measured through the first antenna (322) set as the transmission antenna related to the frequency band of the second cell among the plurality of antennas (320) and the channel state of the second cell measured through the second antenna (324), and if it is determined that switching of the transmission antenna for the frequency band related to the second cell is limited, an operation of checking the channel state of the second cell measured in the electronic device using the channel state of the second cell measured through the first antenna (322) may be included.

[0214] According to one embodiment, one or more programs may include instructions that, when executed by at least one processor of an electronic device, cause the electronic device to perform an operation of determining whether a measurement reporting condition is satisfied based on at least one of a channel state of the first cell measured by the electronic device or a channel state of the second cell measured by the electronic device, and, if the measurement reporting condition is determined to be satisfied, transmit at least one of the channel state of the first cell measured by the electronic device or the channel state of the second cell measured by the electronic device to the first cell.

[0215] According to one embodiment, one or more programs, when executed by at least one processor of an electronic device, perform an operation of checking the first cell and the second cell for performing a measurement in an RRC (radio resource control) idle state based on information related to a measurement acquired from the first cell, when it is determined that switching of a transmission antenna for a frequency band related to the first cell is possible, when it is determined that switching of a transmission antenna for a frequency band related to the first cell is possible, when it is determined that switching of a transmission antenna for a frequency band related to the first cell is possible, when it is determined that switching of a transmission antenna for a frequency band related to the first cell is limited ... An operation of checking the channel status of the first cell measured in the device (101), if it is determined that switching of the transmission antenna for the frequency band related to the second cell is possible, an operation of checking the channel status of the second cell measured in the electronic device (101) using the channel status of the second cell measured through the first antenna (322) set as the transmission antenna related to the frequency band of the second cell among the plurality of antennas (320) in the RRC standby state and the channel status of the second cell measured through the second antenna (324), and if it is determined that switching of the transmission antenna for the frequency band related to the second cell is restricted,It may include a command for performing an operation of checking the channel state of the second cell measured in the electronic device (101) using the channel state of the second cell measured through the first antenna (322) in the RRC standby state.

[0216] According to one embodiment, one or more programs may include instructions that, when executed by at least one processor of an electronic device, cause an operation of determining whether a cell reselection condition is satisfied based on at least one of a channel state of the first cell measured in the electronic device (101) or a channel state of the second cell measured in the electronic device (101), and, if it is determined that the cell reselection condition is satisfied, cause an operation of changing a serving cell of the electronic device (101).

[0217] The embodiments of the present disclosure disclosed in this specification and drawings are merely specific examples presented to easily explain the technical contents according to the embodiments of the present disclosure and to help understand the embodiments of the present disclosure, and are not intended to limit the scope of the embodiments of the present disclosure. Therefore, the scope of one embodiment of the present disclosure should be interpreted as including all changes or modified forms derived based on the technical idea of ​​one embodiment of the present disclosure, in addition to the embodiments disclosed herein, within the scope of one embodiment of the present disclosure.

Claims

1. In an electronic device (101), Multiple antennas (320), Communication circuit (310), At least one processor (300) comprising a processing circuit, and It includes a memory (330) that stores instructions, The above instructions, when individually or collectively executed by the at least one processor (300), cause the electronic device (101) to: When the first cell is detected through scanning, it is checked whether switching of the transmission antenna related to the frequency band of the first cell is possible, If it is determined that the switching of the transmission antenna is possible, the channel state of the first cell measured by the electronic device is confirmed using the channel state of the first cell measured through the first antenna (322) set as the transmission antenna related to the frequency band of the first cell among the plurality of antennas (320) and the channel state of the first cell measured through the second antenna (324) different from the first antenna (322). If it is determined that the switching of the above transmitting antenna is limited, the channel state of the first cell measured by the electronic device is checked using the channel state of the first cell measured through the first antenna (322), An electronic device that performs a RACH procedure with the first cell by using the first antenna (322) or the second antenna (324) used to determine the channel state of the first cell measured by the electronic device as a transmission antenna related to the frequency band of the first cell when the channel state of the first cell measured by the electronic device satisfies a designated RACH (random access channel) condition or a designated cell selection condition.

2. In paragraph 1, The above instructions, when individually or collectively executed by the at least one processor, cause the electronic device to: An electronic device that determines that switching of a transmission antenna related to the frequency band of the first cell is possible when it is determined that a plurality of transmission antennas supporting the frequency band of the first cell are available based on at least one of a structure of an antenna supporting the frequency band of the first cell, a communication state related to a plurality of subscriber identification modules, or a communication state based on DC (dual connectivity).

3. In paragraph 1, The above instructions, when individually or collectively executed by the at least one processor, cause the electronic device to: If it is determined that the switching of the transmitting antenna is possible, the first channel state of the first cell measured through the first antenna related to the frequency band of the first cell among the plurality of antennas and the second channel state of the first cell measured through the second antenna are checked, An electronic device that determines a higher channel state among the first channel state and the second channel state as a channel state of the first cell measured by the electronic device.

4. In paragraph 3, The above instructions, when individually or collectively executed by the at least one processor, cause the electronic device to: An electronic device that, when the second channel state is determined as the channel state of the first cell measured by the electronic device, switches the second antenna to a transmission antenna related to the frequency band of the first cell based on a difference value between the first channel state and the second channel state.

5. In paragraph 1, The above instructions, when individually or collectively executed by the at least one processor, cause the electronic device to: Check the reference value related to the RACH confirmed based on the system information of the above first cell, An electronic device that determines that the specified RACH condition or the specified cell selection condition is satisfied when the channel status of the first cell measured by the electronic device exceeds a reference value related to the RACH.

6. In paragraph 1, The above memory, when executed individually or collectively by the at least one processor, causes the electronic device to: Obtaining measurement-related information from the first cell while registered in the first cell, Identifying the first cell and the second cell for performing the measurement based on the information related to the above measurement, If it is determined that switching of the transmission antenna for the frequency band related to the first cell is possible, the channel state of the first cell measured by the electronic device (101) is checked using the channel state of the first cell measured through the first antenna (322) set as the transmission antenna related to the frequency band of the first cell among the plurality of antennas (320) and the channel state of the first cell measured through the second antenna (324), If it is determined that the switching of the transmission antenna for the frequency band related to the first cell is limited, the channel state of the first cell measured by the electronic device (101) is checked using the channel state of the first cell measured through the first antenna (322), If it is determined that switching of the transmission antenna for the frequency band related to the second cell is possible, the channel state of the second cell measured by the electronic device (101) is checked using the channel state of the second cell measured through the first antenna (322) set as the transmission antenna related to the frequency band of the second cell among the plurality of antennas (320) and the channel state of the second cell measured through the second antenna (324), An electronic device storing instructions for checking the channel state of the second cell measured by the electronic device (101) using the channel state of the second cell measured through the first antenna (322) when it is determined that switching of the transmission antenna for the frequency band related to the second cell is limited.

7. In paragraph 6, The above memory, when executed individually or collectively by the at least one processor, causes the electronic device to: It is confirmed that the measurement reporting condition is satisfied based on at least one of the channel state of the first cell measured in the electronic device (101) or the channel state of the second cell measured in the electronic device (101). An electronic device storing instructions for transmitting, to the first cell, at least one of the channel state of the first cell measured by the electronic device (101) or the channel state of the second cell measured by the electronic device (101), when the above measurement report condition is determined to be satisfied.

8. In paragraph 1, The above memory, when executed individually or collectively by the at least one processor, causes the electronic device to: Identifying the first cell and the second cell for performing measurements in an RRC (radio resource control) idle state based on information related to measurements obtained from the first cell, If it is determined that switching of the transmission antenna for the frequency band related to the first cell is possible, the channel state of the first cell measured by the electronic device (101) is checked using the channel state of the first cell measured through the first antenna (322) set as the transmission antenna related to the frequency band of the first cell among the plurality of antennas (320) in the RRC standby state and the channel state of the first cell measured through the second antenna (324), If it is determined that the switching of the transmission antenna for the frequency band related to the first cell is limited, the channel state of the first cell measured by the electronic device (101) is checked using the channel state of the first cell measured through the first antenna (322) in the RRC standby state, If it is determined that switching of the transmission antenna for the frequency band related to the second cell is possible, the channel state of the second cell measured by the electronic device (101) is checked using the channel state of the second cell measured through the first antenna (322) set as the transmission antenna related to the frequency band of the second cell among the plurality of antennas (320) in the RRC standby state and the channel state of the second cell measured through the second antenna (324), An electronic device storing instructions for checking the channel state of the second cell measured by the electronic device (101) using the channel state of the second cell measured through the first antenna (322) in the RRC standby state when it is determined that switching of the transmission antenna for the frequency band related to the second cell is limited.

9. In paragraph 8, The above memory, when executed individually or collectively by the at least one processor, causes the electronic device to: It is confirmed that a cell reselection condition is satisfied based on at least one of the channel state of the first cell measured in the electronic device (101) or the channel state of the second cell measured in the electronic device (101). An electronic device that stores instructions for changing the serving cell of the electronic device (101) when it is determined that the above cell reselection condition is satisfied.

10. In a method of operating an electronic device (101) having a plurality of antennas (320), When a first cell is detected through scanning, an operation of checking whether switching of a transmission antenna related to the frequency band of the first cell is possible; When it is determined that the switching of the transmission antenna is possible, an operation of checking the channel state of the first cell measured in the electronic device using the channel state of the first cell measured through the first antenna (322) set as the transmission antenna related to the frequency band of the first cell among the plurality of antennas (320) and the channel state of the first cell measured through the second antenna (324) different from the first antenna (322); When it is determined that the switching of the transmitting antenna is limited, an operation of checking the channel state of the first cell measured in the electronic device using the channel state of the first cell measured through the first antenna (322), and A method comprising an operation of performing a RACH procedure with the first cell by using the first antenna (322) or the second antenna (324) used to determine the channel state of the first cell measured by the electronic device as a transmission antenna related to the frequency band of the first cell when the channel state of the first cell measured by the electronic device satisfies a designated RACH (random access channel) condition or a designated cell selection condition.

11. In paragraph 10, The operation to check whether the above transmitting antenna can be switched is as follows: A method comprising an operation of determining that switching of a transmission antenna related to the frequency band of the first cell is possible when it is determined that a plurality of transmission antennas supporting the frequency band of the first cell are available based on at least one of a structure of an antenna supporting the frequency band of the first cell, a communication state related to a plurality of subscriber identification modules, or a communication state based on DC (dual connectivity).

12. In paragraph 10, An operation of obtaining measurement-related information from the first cell while registered in the first cell; An operation of identifying the first cell and the second cell for performing a measurement based on information related to the measurement; When it is determined that switching of the transmission antenna for the frequency band related to the first cell is possible, an operation of checking the channel state of the first cell measured in the electronic device using the channel state of the first cell measured through the first antenna (322) set as the transmission antenna related to the frequency band of the first cell among the plurality of antennas (320) and the channel state of the first cell measured through the second antenna (324); An operation of checking the channel state of the first cell measured in the electronic device using the channel state of the first cell measured through the first antenna (322) when it is determined that the switching of the transmission antenna for the frequency band related to the first cell is limited; When it is determined that switching of the transmission antenna for the frequency band related to the second cell is possible, an operation of checking the channel state of the second cell measured in the electronic device using the channel state of the second cell measured through the first antenna (322) set as the transmission antenna related to the frequency band of the second cell among the plurality of antennas (320) and the channel state of the second cell measured through the second antenna (324), and A method further comprising an operation of checking a channel state of the second cell measured in the electronic device using a channel state of the second cell measured through the first antenna (322) when it is determined that switching of the transmission antenna for the frequency band related to the second cell is limited.

13. In paragraph 12, An operation of confirming whether a measurement reporting condition is satisfied based on at least one of a channel state of the first cell measured by the electronic device or a channel state of the second cell measured by the electronic device, and A method further comprising an operation of transmitting, to the first cell, at least one of a channel state of the first cell measured by the electronic device or a channel state of the second cell measured by the electronic device, if the measurement report condition is determined to be satisfied.

14. In paragraph 10, An operation of identifying the first cell and the second cell for performing measurements in an RRC (radio resource control) idle state based on information related to measurements obtained from the first cell; When it is determined that switching of the transmission antenna for the frequency band related to the first cell is possible, an operation of checking the channel state of the first cell measured in the electronic device (101) using the channel state of the first cell measured through the first antenna (322) set as the transmission antenna related to the frequency band of the first cell among the plurality of antennas (320) in the RRC standby state and the channel state of the first cell measured through the second antenna (324), When it is determined that switching of the transmission antenna for the frequency band related to the first cell is limited, an operation of checking the channel state of the first cell measured in the electronic device (101) using the channel state of the first cell measured through the first antenna (322) in the RRC standby state; When it is determined that switching of the transmission antenna for the frequency band related to the second cell is possible, an operation of checking the channel state of the second cell measured in the electronic device (101) using the channel state of the second cell measured through the first antenna (322) set as the transmission antenna related to the frequency band of the second cell among the plurality of antennas (320) in the RRC standby state and the channel state of the second cell measured through the second antenna (324), and A method further comprising an operation of checking the channel state of the second cell measured in the electronic device (101) using the channel state of the second cell measured through the first antenna (322) in the RRC standby state when it is determined that switching of the transmission antenna for the frequency band related to the second cell is limited.

15. In paragraph 14, An operation of confirming whether a cell reselection condition is satisfied based on at least one of a channel state of the first cell measured in the electronic device (101) or a channel state of the second cell measured in the electronic device (101), and A method further comprising an operation of changing the serving cell of the electronic device (101) when it is determined that the above cell reselection condition is satisfied.

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