KR20240039546A - Electronic device for search of frequency band and operating method thereof - Google Patents

Abstract

Various embodiments of the present invention relate to an apparatus and method for searching a frequency band in an electronic device. The electronic device includes a communication circuit and a processor, wherein the processor performs a search of each of the plurality of frequency bands based on a first frequency search interval and searches the plurality of frequency bands based on the search result. Detecting at least one frequency band for updating a middle frequency search interval, updating the frequency search interval of the at least one frequency band to a second frequency search interval different from the first frequency search interval, and performing the second frequency search. A search is performed for each of the at least one frequency band based on an interval, and at least one remaining frequency band among the plurality of frequency bands excluding the at least one frequency band is searched based on the first frequency search interval. This can be done. Other embodiments may also be possible.

Description

Electronic device for searching a frequency band and its operating method {ELECTRONIC DEVICE FOR SEARCH OF FREQUENCY BAND AND OPERATING METHOD THEREOF}

Various embodiments of the present invention relate to an electronic device and a method of operating the same for searching a frequency band in a wireless communication system.

An electronic device in a wireless communication system can select a cell to access for wireless communication. For example, the electronic device may detect at least one cell to which the electronic device can access through a search for at least one frequency band supported by the electronic device. The electronic device may determine whether access to at least one cell detected through a search for a frequency band is possible. The electronic device can connect (or register) to a specific cell that is determined to be accessible.

When the electronic device is in a state in which communication service is limited (e.g., limited service) or in a state in which communication service cannot be provided (e.g., no service), the electronic device may search for a cell to connect (or register). . For example, when power is supplied or the electronic device leaves the shaded area, the electronic device may obtain information related to the PLMN stored in the subscriber identity module (SIM) of the electronic device. As an example, information related to a PLMN may include information related to a registered public land mobile network (RPLMN), a home PLMN (HPLMN), and/or a preferred PLMN (PPLMN). If the registered PLMN, home PLMN, and/or preferred PLMN are not discovered through a search based on information related to the PLMN, the electronic device may perform a search (e.g., full band scan) for all frequency bands supported by the electronic device. You can.

When performing a search (e.g., full band scan) for all frequency bands supported by the electronic device, the electronic device performs a first search (e.g., power scan) based on a frequency search interval (e.g., about 300 kHz) specified for each frequency band. Alternatively, at least one frequency band in which a signal (or energy) is detected can be confirmed through a raw scan. The electronic device may confirm at least one frequency that satisfies a specified signal quality (e.g., received signal strength indicator (RSSI)) through a second search (e.g., fine scan) for at least one frequency band in which a signal is detected. . The electronic device may connect to (or register) a specific cell detected through cell acquisition for at least one frequency that satisfies a specified signal quality. As an example, cell acquisition may include a series of operations to determine whether an electronic device can perform wireless communication over a corresponding frequency.

Electronic devices have increased frequency bandwidth (e.g., about 20 MHz, about 100 MHz, about 200 MHz, and/or about 400 MHz) based on long term evolution (LTE) communication method and/or new radio (NR) communication method, so that the specified frequency The time taken by the first search based on the search interval may increase.

Various embodiments of the present invention disclose an apparatus and method for reducing time delay due to frequency band search in an electronic device.

The technical problem to be achieved in this document is not limited to the technical problem mentioned above, and other technical problems not mentioned can be clearly understood by those skilled in the art from the description below. There will be.

According to various embodiments, an electronic device may include communication circuitry supporting a plurality of frequency bands associated with cellular communication, and at least one processor operatively connected to the communication circuitry. According to one embodiment, the processor may perform a search for each of a plurality of frequency bands based on the first frequency search interval. According to one embodiment, the processor may detect at least one frequency band for updating the frequency search interval among a plurality of frequency bands based on the frequency band search result. According to one embodiment, the processor may update the frequency search interval of at least one frequency band to a second frequency search interval that is different from the first frequency search interval. According to one embodiment, the processor performs a search for each of at least one frequency band based on a second frequency search interval, and at least one remaining frequency band excluding the at least one frequency band among the plurality of frequency bands is , a search may be performed based on the first frequency search interval.

According to various embodiments, a method of operating an electronic device may include performing a search for each of a plurality of frequency bands related to cellular communication based on a first frequency search interval. According to one embodiment, a method of operating an electronic device may include detecting at least one frequency band for updating a frequency search interval among a plurality of frequency bands based on a search result of the frequency band. According to one embodiment, a method of operating an electronic device may include updating the frequency search interval of at least one frequency band to a second frequency search interval that is different from the first frequency search interval. According to one embodiment, a method of operating an electronic device includes performing a search for each of at least one frequency band based on a second frequency search interval, wherein the at least one frequency band among the plurality of frequency bands In at least one remaining frequency band excluding , a search may be performed based on the first frequency search interval.

According to various embodiments, 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 a processor of an electronic device, perform a search for each of a plurality of frequency bands related to cellular communication based on a first frequency search interval and perform a search based on the search result. An operation of detecting at least one frequency band for updating a frequency search interval among the plurality of frequency bands and setting the frequency search interval of the at least one frequency band to a second frequency search interval different from the first frequency search interval. An operation of updating, and an operation of performing a search of each of the at least one frequency band based on the second frequency search interval, and at least one remaining frequency band among the plurality of frequency bands excluding the at least one frequency band. The frequency band may include a command for performing a search based on the first frequency search interval.

According to various embodiments of the present invention, an electronic device can reduce the time required to search a frequency band by adjusting (e.g., expanding) the frequency search interval for a frequency band in which a signal (or energy) is not detected. .

The effects that can be obtained from various embodiments of the present invention are not limited to the effects mentioned above, and other effects not mentioned above can be understood from the description below as a matter of common knowledge in the technical field to which the various embodiments of the present invention belong. It will be clearly understandable to those who have it.

1 is a block diagram of an electronic device according to various embodiments of the present invention.
Figure 2 is a block diagram of an electronic device for searching a frequency band according to various embodiments.
Figure 3 is a flowchart for updating a frequency search interval in an electronic device according to various embodiments.
Figure 4 is a flowchart for performing a frequency band search in an electronic device according to various embodiments.
FIG. 5 is a flowchart for updating a frequency search interval based on the activation state and movement state information of a processor in an electronic device according to various embodiments.
Figure 6 is an example of updating a frequency search interval based on a first interval in an electronic device according to various embodiments.
Figure 7 is an example of updating the frequency search interval based on the second interval in an electronic device according to various embodiments.
FIG. 8 is a flowchart for restoring a frequency search interval in an electronic device according to various embodiments.

Various embodiments are described in detail below with reference to the attached drawings.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Figure 2 is a block diagram of an electronic device for searching a frequency band according to various embodiments. According to one embodiment, the electronic device 101 of FIG. 2 may be at least partially similar to the electronic device 101 of FIG. 1 or may include another embodiment of the electronic device. In the following description, the frequency is a radio frequency (RF) frequency channel and may include evolved absolute radio frequency channel number (EARFCN) of the LTE communication method and/or NR-ARFCN of the NR communication method.

According to various embodiments referring to FIG. 2 , the electronic device 101 may include a processor 200, a communication circuit 210, and/or a memory 220. According to one embodiment, the processor 200 may be substantially the same as the processor 120 (eg, a communication processor) of FIG. 1 or may be included in the processor 120. The communication circuit 210 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 memory 220 may be substantially the same as the memory 130 of FIG. 1 or may be included in the memory 130. According to one embodiment, the processor 200 may be operatively, functionally, and/or electrically connected to the communication circuit 210 and/or the memory 220.

According to various embodiments, the processor 200 may control the communication circuit 210 to search frequency bands supported by the electronic device 101. According to one embodiment, when the processor 200 determines that the communication service of the electronic device 101 is limited (e.g., limited service) or that the communication service cannot be provided (e.g., no service), the processor 200 uses the memory The communication circuit 210 may be controlled to perform a search related to the cell list stored in 220. For example, a search involving a cell list may include a series of operations in which the electronic device 101 searches for the presence of a valid cell based on information (e.g., frequency) associated with a cell to which it has previously registered (or accessed). there is. For example, a valid cell may include at least one of a cell (or frequency) in which a signal exceeding a specified signal strength is detected or a cell in which time resources and/or frequency resources are synchronized with the electronic device 101. According to one embodiment, the processor 200 may control the communication circuit 210 to perform a search of frequency bands supported by the electronic device 101 when a valid cell is not detected through a search related to the cell list. there is. For example, searching frequency bands may include a series of operations to check whether a signal (or energy) is detected through at least one frequency included in each frequency band. According to one embodiment, when performing a search of frequency bands supported by the electronic device 101, the processor 200 searches for at least one frequency included in each frequency band based on a designated first frequency search interval. The communication circuit 210 can be controlled to perform. As an example, the designated first frequency search interval may represent a reference interval set to designate (or select) a frequency for search among frequencies included in the frequency band. For example, the designated first frequency search interval may be set to about 300 kHz in a long term evolution (LTE) communication method. As an example, the designated first frequency search interval may be set based on the interval (e.g. step-size) of the frequency that includes the synchronization signal (e.g. synchronization signal block (SSB)) in the NR (new radio) communication method. . As an example, SSB may include a primary synchronization signal (PSS) and a second synchronization signal (SSS).

According to various embodiments, the processor 200 may detect at least one frequency band that satisfies a specified signal detection condition based on search results of frequency bands supported by the electronic device 101. For example, a frequency band that satisfies a specified signal detection condition may include a frequency band in which a signal (or energy) is not continuously detected for a specified first number of times (e.g., 3 times). For example, a state in which a signal (or energy) is not detected may include a state in which a signal (or energy) is not detected through a search of a frequency band, or only a signal (or energy) below a specified reference intensity is detected. For example, the designated reference intensity may be set based on the minimum value of the received signal intensity at which the electronic device 101 determines that the synchronization signal can be detected (eg, about -100 dBm).

According to various embodiments, the processor 200 may update the frequency search interval of at least one frequency band that satisfies a specified signal detection condition among the frequency bands supported by the electronic device 101. According to one embodiment, the processor 200 may update the frequency search interval of at least one frequency band that satisfies a specified signal detection condition based on the operation mode of the application processor and/or whether the electronic device 101 is moving. there is. As an example, the operation mode of the application processor may include an active mode (eg, wakeup mode or active mode) and/or an inactive mode (eg, sleep mode or inactive mode). For example, whether the electronic device 101 is moving may be determined based on at least one of Doppler shift, GNSS (global navigation satellite system), or motion sensor. As an example, the motion sensor is a sensor for detecting information related to the movement of the electronic device 101 and may include at least one of a gyro sensor, a tilt sensor, an acceleration sensor, an inertial measurement unit (IMU) sensor, or a magnetic field sensor. .

According to one embodiment, when the application processor is in an active mode and it is determined that the electronic device 101 is moving (e.g., in a moving state), the processor 200 satisfies a specified signal detection condition based on a specified first interval. The frequency search interval of at least one frequency band may be updated (or extended) to a designated second frequency search interval. As an example, the designated first interval may be set to a first value (eg, 2) based on the interval of frequency (eg, EARFCN and/or NR-ARFCN).

According to one embodiment, when it is determined that the application processor is in an inactive mode or the electronic device 101 is in a stationary state (e.g., not moving), the processor 200 detects a designated signal based on a designated second interval. The frequency search interval of at least one frequency band that satisfies the condition may be updated (or extended) to a designated second frequency search interval. For example, the specified second interval (interval_l) is increased by a reference value (e.g., 1) based on the interval of the frequency (e.g., EARFCN and/or NR-ARFCN) in the previously specified second interval, as shown in Equation 1 below: It can be set to the given value. For example, the search range of the designated second frequency search interval may be expanded based on the number of searches in the frequency band based on the designated second interval set as shown in Equation 1 below.

According to one embodiment, the designated second frequency search interval may be set (or updated) based on the designated first interval or the designated second interval, as shown in Equation 2 below.

As an example, sBW represents an updated frequency search interval (e.g., a specified second frequency search interval) based on a specified first interval or a specified second interval, init_sBW represents a specified first frequency search interval, and interval_l represents a specified first frequency search interval. It may represent a first interval or a specified second interval.

According to various embodiments, when performing a search of frequency bands supported by the electronic device 101, the processor 200 searches the frequency bands based on a designated first frequency search interval and/or a designated second frequency search interval. The communication circuit 210 can be controlled to perform. According to one embodiment, the processor 200 may control the communication circuit 210 to perform a search for at least one frequency band that satisfies a specified condition based on the specified second frequency search interval. For example, the processor 200 may control the communication circuit 210 to set the frequency at which the search starts within the frequency band to be different based on the number of searches in the frequency band, as shown in Equation 3 below.

For example, start EARFCN (evolved absolute radio frequency channel number) indicates the frequency to start the search within the frequency band, band first EARFCN indicates the first frequency within the frequency band, and init_sBW indicates the specified first frequency search interval. represents the number of times a frequency band is searched based on a change in the frequency search interval, and interval_l may represent a designated first interval or a designated second interval. For example, the frequency at which the search begins within the frequency band may be set to the first frequency within the frequency band based on Equation 3 when the first search of the frequency band is performed (e.g., C%intercal_l=0). The frequency at which the search within the frequency band begins is determined at the second search of the frequency band (e.g., C%intercal_l=1), and the second frequency search interval specified from the first frequency within the frequency band based on Equation 3 (e.g., C%intercal_l=1). It can be set to frequencies spaced apart by init_sBW/100kHz). The frequency at which the search begins within the frequency band may be set to the first frequency within the frequency band based on Equation 3 during the third search of the frequency band (e.g., C%intercal_l=0).

According to one embodiment, a search for at least one frequency band that does not satisfy a specified signal detection condition among the frequency bands supported by the electronic device 101 may be performed based on a specified first frequency search interval. For example, a frequency band that does not satisfy the specified signal detection conditions is a frequency band in which a signal (or energy) is detected through a search of the frequency band, and satisfies the specified signal detection conditions among the frequency bands supported by the electronic device 101. It may include the remaining frequency bands excluding at least one frequency band.

According to various embodiments, the processor 200 uses the communication circuit 210 to restore the frequency search interval of at least one frequency band that satisfies a specified signal detection condition to the specified first frequency search interval based on the search result of the frequency band. can be controlled. According to one embodiment, when the processor 200 detects a signal (or energy) through a search of a frequency band based on a designated second frequency search interval, the frequency search interval of the frequency band in which the signal (or energy) is detected The communication circuit 210 can be controlled to restore to the designated first frequency search interval. For example, a state in which a signal (or energy) is detected may include a state in which a signal (or energy) exceeding a specified reference intensity is detected through a search of a frequency band. According to one embodiment, the processor 200 detects a signal (or energy) through a search of a frequency band based on a designated second frequency search interval and, upon receiving a synchronization signal (e.g., SSB), detects the signal (or energy) The communication circuit 210 can be controlled to restore the frequency search interval of the frequency band in which ) was detected to the designated first frequency search interval.

According to various embodiments, when a signal (or energy) is detected through a search of a frequency band, the processor 200 performs an additional search (e.g., fine scan) for at least one frequency band in which the signal (or energy) was detected. The communication circuit 210 can be controlled to perform. According to one embodiment, the processor 200 may control the communication circuit 210 to search all frequencies included in at least one frequency band in which a signal (or energy) is detected. According to one embodiment, when the processor 200 detects a frequency that satisfies the specified signal quality through additional search, it controls the communication circuit 210 to connect to (or register) a cell related to the frequency that satisfies the specified signal quality. can do. As an example, the signal quality may include at least one of reference signal received power (RSRP), reference signal received quality (RSRQ), received signal strength indicator (RSSI), or signal to interference plus noise ratio (SINR).

According to various embodiments, the communication circuit 210 transmits and/or receives signals and/or data to and from at least one external electronic device (e.g., electronic device 102 or 104 or server 108 of FIG. 1). You can apply. According to one embodiment, the communication circuit 210 may include a first communication module and a second communication module. For example, the first communication module may support transmission and/or reception of control messages and/or data with a first node (eg, NR base station) through first wireless communication. As an example, the first wireless communication may include a 5th generation communication method (eg, NR communication method). For example, the second communication module may support transmission and/or reception of control messages and/or data with a second node (eg, an LTE base station) through second wireless communication. For example, the second wireless communication is a 4th generation communication method and may include at least one of LTE, LTE-advanced (LTE-A), or LTE advanced pro (LTE-A pro). For example, the first communication module and the second communication module may be composed of software that processes signals and protocols of different frequency bands. For example, the first communication module and the second communication module may be logically (eg, software) separated. For example, the first communication module and the second communication module may be composed of different circuits or different hardware.

According to various embodiments, the memory 220 may store various data used by at least one component (e.g., the processor 200 and/or the communication circuit 210) of the electronic device 101. As an example, , the data may include information related to at least one of a cell list, a designated first interval, or a designated second interval of the electronic device 101. As an example, the cell list may be information that the electronic device 101 registered at a previous time ( or accessed). According to one embodiment, the memory 220 may store various instructions that can be executed through the processor 200.

According to various embodiments, an electronic device (e.g., the electronic device 101 of FIG. 1 or FIG. 2) includes a communication circuit (the wireless communication circuit 192 of FIG. 1 or the wireless communication circuit 192 of FIG. 2 communication circuit 210), and at least one processor (processor 120 of FIG. 1 or processor 200 of FIG. 2) operatively connected to the communication circuit. According to one embodiment, the processor may perform a search for each of a plurality of frequency bands based on the first frequency search interval. According to one embodiment, the processor may detect at least one frequency band for updating the frequency search interval among a plurality of frequency bands based on the frequency band search result. According to one embodiment, the processor may update the frequency search interval of at least one frequency band to a second frequency search interval that is different from the first frequency search interval. According to one embodiment, the processor performs a search for each of at least one frequency band based on a second frequency search interval, and at least one remaining frequency band excluding the at least one frequency band among the plurality of frequency bands is , a search may be performed based on the first frequency search interval.

According to various embodiments, the processor may detect at least one frequency band for updating the frequency search interval for at least one frequency band in which a signal is not continuously detected a specified number of times based on the search result of the frequency band. .

According to various embodiments, the electronic device may further include an application processor. According to one embodiment, when the processor determines that the application processor is in an active mode and the electronic device is in a moving state, the processor updates the frequency search interval of at least one frequency band to the second frequency search interval based on the specified first interval. can do.

According to various embodiments, when the application processor is in an inactive mode, the processor may update the frequency search interval of at least one frequency band to a second frequency search interval based on a specified second interval that is different from the specified first interval. .

According to various embodiments, when the processor determines that the application processor is in an active mode and the electronic device is in a stationary state, the processor determines a frequency search interval of at least one frequency band based on a specified second interval that is different from the specified first interval. 2 It can be updated at frequency search interval.

According to various embodiments, when the frequency search interval of at least one frequency band is updated to the second frequency search interval based on the specified second interval, the processor sets the second frequency search interval based on the number of searches of the frequency band. It can be updated additionally.

According to various embodiments, the processor may check the movement state of the electronic device based on at least one of the electronic device's Doppler shift, GNSS (global navigation satellite system), or motion sensor.

According to various embodiments, the processor may set the position of a frequency for starting a search within at least one frequency band based on the number of searches in the frequency band.

According to various embodiments, the frequency may include an evolved absolute radio frequency channel number (EARFCN) and/or a new radio (NR)-absolute radio frequency channel number (ARFCN).

According to various embodiments, the processor searches at least one frequency band based on a second frequency search interval, and when there is a frequency band in which a signal with a reference intensity or higher is detected, the processor searches for a frequency band in which a signal with a reference intensity or higher is detected. The frequency search interval can be restored to the first frequency search interval.

FIG. 3 is a flowchart 300 for updating a frequency search interval in an electronic device according to various embodiments. In the following embodiments, each operation may be performed sequentially, but is not necessarily performed sequentially. For example, the order of each operation may be changed, and at least two operations may be performed in parallel. For example, the electronic device of FIG. 3 may be the electronic device 101 of FIG. 1 or FIG. 2 .

According to various embodiments referring to FIG. 3, the electronic device (e.g., the processor 120 of FIG. 1 or the processor 200 of FIG. 2) searches for frequency bands supported by the electronic device 101 in operation 301. It can be done. According to one embodiment, when the electronic device 101 supports the frequency bands B1, B2, B3, B5, B7, B8, B20, and B28 (e.g., frequency bands of the LTE communication method), As shown in Table 1 below, the communication circuit 210 can be controlled to perform a search for at least one frequency based on the first frequency search interval specified within each frequency band. As an example, the designated first frequency search interval may represent a reference interval set to designate (or select) a frequency for search among frequencies included in the frequency band. For example, the designated first frequency search interval may be set to about 300 kHz in the LTE communication method. As an example, the designated first frequency search interval is a global frequency raster for the interval (e.g., synchronization raster) and frequency (NR-ARFCN) of the frequency that includes the synchronization signal (e.g., SSB) in the NR communication method. It can be set based on . According to one embodiment, a search of frequency bands may be performed when a valid cell is not detected through a search related to a cell list.

07:39:33.361700 plmn_GetRrcSearchMode : Initial PLMN Search mode = 2

07:39:33.908666 [MAIN]Selected Band Enum (1) Band Num(1) = 2383ms
07:39:33.908819 [MAIN]LTE_CPHY_FREQ_SCAN_REQ start(25) end(575)
07:39:36.292364 [MAIN] No Scanned Result

07:39:36.350561 [MAIN]Selected Band Enum (7) Band Num(7) = 2833ms
07:39:36.350774 [MAIN]LTE_CPHY_FREQ_SCAN_REQ start(2775) end(3425)
07:39:39.183874 [RRM => RRC] Send LTE_CPHY_FREQ_SCAN_CNF

07:39:39.288122 [MAIN]Selected Band Enum (5) Band Num(5) = 1041ms
07:39:39.288274 [MAIN]LTE_CPHY_FREQ_SCAN_REQ start(2407) end(2643)
07:39:40.329748 [RRM => RRC] Send LTE_CPHY_FREQ_SCAN_CNF

07:39:40.432043 [MAIN]Selected Band Enum (3) Band Num(3) = 3194ms
07:39:40.432195 [MAIN]LTE_CPHY_FREQ_SCAN_REQ start(1207) end(1943)
07:39:43.626470 [RRM => RRC] Send LTE_CPHY_FREQ_SCAN_CNF

07:39:43.729162 [MAIN]Selected Band Enum (8) Band Num(8) = 1467ms
07:39:43.729314 [MAIN]LTE_CPHY_FREQ_SCAN_REQ start(3457) end(3793)
07:39:45.196417 [MAIN] No Scanned Result

07:39:45.259893 [MAIN]Selected Band Enum (26) Band Num(28) = 1863ms
07:39:45.260046 [MAIN]LTE_CPHY_FREQ_SCAN_REQ start(9225) end(9645)
07:39:47.123693 [MAIN] No Scanned Result

07:39:47.187566 [MAIN]Selected Band Enum (18) Band Num(20) = 760ms
07:39:47.187719 [MAIN]LTE_CPHY_FREQ_SCAN_REQ start(6255) end(6425)
07:39:47.948034 [MAIN] No Scanned Result

07:39:48.011480 [MAIN]Selected Band Enum (2) Band Num(2) = 2543ms
07:39:48.011663 [MAIN]LTE_CPHY_FREQ_SCAN_REQ start(607) end(1193)
07:39:50.554754 [MAIN] No Scanned Result

According to various embodiments, in operation 303, the electronic device (e.g., the processor 120 or 200) detects at least one frequency that satisfies a specified signal detection condition based on a search result of frequency bands supported by the electronic device 101. You can check whether a band exists. According to one embodiment, the processor 200 may determine that a frequency band in which a signal (or energy) is not continuously detected for a designated first number of times (eg, 3 times) satisfies a designated signal detection condition. For example, the processor 200 determines the signal detection conditions specified by the frequency bands B1, B2, B8, B20, and B28 among the frequency bands supported by the electronic device 101 based on the search results of the frequency bands shown in Table 1. can be judged to be satisfied. For example, a state in which a signal (or energy) is not detected may include a state in which a signal (or energy) is not detected through a search of a frequency band, or only a signal (or energy) below a specified reference intensity is detected. As an example, the designated reference intensity may be set based on the minimum value of the received signal intensity (e.g., about -100 dBm) at which the electronic device 101 determines that the synchronization signal can be detected.

According to various embodiments, when the electronic device (e.g., the processor 120 or 200) determines that at least one frequency band that satisfies a specified signal detection condition does not exist (e.g., 'No' in operation 303), the frequency band One embodiment of updating the search interval may end.

According to various embodiments, when the electronic device (e.g., the processor 120 or 200) determines that at least one frequency band that satisfies a specified signal detection condition exists (e.g., 'Yes' in operation 303), operation 305 In, the frequency search interval of the frequency band that satisfies the specified signal detection conditions can be updated. According to one embodiment, the processor 200 may update the frequency search interval of at least one frequency band that satisfies a specified signal detection condition based on the operation mode of the application processor and/or whether the electronic device 101 is moving. there is. For example, when the processor 200 determines that the application processor is in an active mode and the electronic device 101 is moving, the processor 200 selects a frequency of at least one frequency band that satisfies a specified signal detection condition based on the specified first interval. The search interval may be updated (or extended) to a designated second frequency search interval. As an example, the designated first interval may be set to a first value (eg, 2) based on the interval of frequency (eg, EARFCN and/or NR-ARFCN). For example, when the processor 200 determines that the application processor is in an inactive mode or that the electronic device 101 is in a stationary state (e.g., not moving), the processor 200 determines a specified signal detection condition based on the specified second interval. The frequency search interval of at least one satisfying frequency band may be updated (or extended) to a designated second frequency search interval. In one example, the specified second interval may be set to a value increased by a reference value (e.g., 1) based on the interval of the frequency (e.g., EARFCN and/or NR-ARFCN) in the previously specified second interval, as shown in Equation 1. You can. For example, whether the electronic device 101 moves may be determined based on at least one of the Doppler displacement, GNSS, or motion sensor of the electronic device 101.

According to various embodiments, in operation 307, the electronic device (e.g., the processor 120 or 200) may perform a search for a frequency band that satisfies a specified signal detection condition based on the updated frequency search interval. According to one embodiment, the processor 200 performs a search for at least one frequency band that does not satisfy a specified signal detection condition among the frequency bands supported by the electronic device 101 based on a specified first frequency search interval. The communication circuit 210 can be controlled. The processor 200 may control the communication circuit 210 to perform a search for at least one frequency band that satisfies a specified condition based on a specified second frequency search interval. According to one embodiment, when performing a search of a frequency band based on a designated second frequency search interval, the processor 200 sets the frequency at which the search starts within the frequency band to be different based on the number of searches in the frequency band. The communication circuit 210 can be controlled. According to one embodiment, when the processor 200 performs a search of a frequency band based on a specified second frequency search interval that is updated based on the specified second interval, the processor 200 searches the specified second frequency based on the number of searches of the frequency band. The communication circuit 210 can be controlled to extend the search interval. For example, the designated second frequency search interval may be extended when the search of the frequency band is repeated a designated second number of times based on the designated second interval set as shown in Equation 1. For example, the second specified number of times may be set to a reference value (e.g., 1). As an example, the second designated number of times may be set based on the designated second interval.

According to various embodiments, when the electronic device 101 performs a search of a frequency band based on a designated second frequency search interval (e.g., an extended frequency search interval), the electronic device 101 searches the frequency band within the frequency band based on the number of searches in the frequency band. By setting different frequencies to start the search, it is possible to search all frequencies included within the frequency band by searching multiple frequency bands.

According to various embodiments, when the electronic device 101 supports the frequency bands of the NR communication method of N1, N3, N26, N48, and/or N93, based on the search results of the frequency bands supported by the electronic device 101 Thus, at least one frequency band (e.g., N1, N26, and/or N93) that satisfies the specified signal detection conditions can be confirmed. The electronic device 101 may update the frequency search interval of at least one frequency band (eg, N1, N26, and/or N93) that satisfies the specified signal detection condition. According to one embodiment, the frequency search interval of at least one frequency band (e.g., N1, N26, and/or N93) may be updated based on the operation mode of the application processor and/or whether the electronic device 101 is moving. .

FIG. 4 is a flowchart 400 for performing a frequency band search in an electronic device according to various embodiments. According to one embodiment, at least a portion of FIG. 4 may include detailed operations of operation 301 of FIG. 3 . In the following embodiments, each operation may be performed sequentially, but is not necessarily performed sequentially. For example, the order of each operation may be changed, and at least two operations may be performed in parallel. For example, the electronic device in FIG. 4 may be the electronic device 101 in FIG. 1 or 2 .

According to various embodiments referring to FIG. 4, an electronic device (e.g., processor 120 of FIG. 1 or processor 200 of FIG. 2) may perform cell search related to the electronic device 101 in operation 401. there is. According to one embodiment, the processor 200 performs a search related to the cell list stored in the memory 220 when it is determined that the communication service of the electronic device 101 is limited or the communication service cannot be provided. The communication circuit 210 can be controlled to do so. For example, a search involving a cell list (or cell search) may be a series of searches in which the electronic device 101 searches for the presence of a valid cell based on information (e.g., frequency) associated with cells to which it has previously registered (or accessed). Can include actions.

According to various embodiments, the electronic device (eg, the processor 120 or 200) may check whether a valid cell is detected through cell search related to the electronic device 101 in operation 403. For example, a valid cell may include at least one of a cell in which a signal exceeding a specified signal strength is detected or a cell in which time and/or frequency resources are synchronized with the electronic device 101.

According to various embodiments, if a valid cell is not detected through cell search related to the electronic device 101 (e.g., 'No' in operation 403), the electronic device (e.g., processor 120 or 200) performs operation 405. In , a search of frequency bands supported by the electronic device 101 may be performed. According to one embodiment, when a valid cell is not detected through a search related to the cell list, the processor 200 performs at least a search interval based on the first frequency search interval specified within each frequency band supported by the electronic device 101. The communication circuit 210 can be controlled to perform a search of one frequency.

According to various embodiments, when the electronic device (e.g., the processor 120 or 200) detects a valid cell through cell search related to the electronic device 101 (e.g., 'Yes' in operation 403), the electronic device 101 detects a valid cell in the frequency band. One embodiment of performing a search may end. According to one embodiment, when a valid cell is detected through a cell search related to the electronic device 101, the processor 200 may determine that a cell in which the electronic device 101 can register exists. The processor 200 may control the communication circuit 210 to perform registration as a valid cell.

FIG. 5 is a flowchart 500 for updating a frequency search interval based on the activation state and movement state information of a processor in an electronic device according to various embodiments. According to one embodiment, at least a portion of FIG. 5 may include detailed operations of operation 305 of FIG. 3 . In the following embodiments, each operation may be performed sequentially, but is not necessarily performed sequentially. For example, the order of each operation may be changed, and at least two operations may be performed in parallel. For example, the electronic device of FIG. 5 may be the electronic device 101 of FIG. 1 or FIG. 2 .

According to various embodiments referring to FIG. 5, an electronic device (e.g., processor 120 of FIG. 1 or processor 200 of FIG. 2) determines that at least one frequency band that satisfies specified signal detection conditions exists. In this case (e.g., 'Yes' in operation 303 of FIG. 3 ), in operation 501, it can be confirmed whether the operation mode of the application processor included in the electronic device 101 is the active mode.

According to various embodiments, if the application processor (e.g., processor 120 or 200) operates in an active mode (e.g., 'Yes' in operation 501), in operation 503, the electronic device 101 moves. You can check the status. According to one embodiment, the processor 200 controls the electronic device 101 based on at least one of a Doppler shift, a global navigation satellite system (GNSS), or a motion sensor of the electronic device 101. You can check whether it is in a moving state. For example, the movement state of the electronic device 101 may include a state in which the electronic device 101 is currently moving. As an example, the motion sensor is a sensor for detecting information related to the movement of the electronic device 101 and may include at least one of a gyro sensor, a tilt sensor, an acceleration sensor, an IMU sensor, or a magnetic field sensor.

According to various embodiments, when the electronic device (e.g., the processor 120 or 200) determines that the electronic device 101 is in a moving state (e.g., 'Yes' in operation 503), in operation 505, the specified first interval Based on , the frequency search interval of at least one frequency band that satisfies the specified signal detection conditions can be updated. As an example, the designated first interval may be set to a first value (eg, 2) based on the interval of frequency (eg, EARFCN and/or NR-ARFCN).

According to various embodiments, the electronic device (e.g., the processor 120 or 200) operates in an inactive mode (e.g., 'No' in operation 501) or the electronic device 101 is not in a mobile state. (e.g., if it is determined to be in a stopped state) (e.g., 'No' in operation 503), in operation 507, the frequency search interval of at least one frequency band that satisfies the specified signal detection condition based on the specified second interval is updated. You can. For example, the search range of the designated second interval may be expanded based on the number of searches in the frequency band based on the designated second interval set as shown in Equation 1.

Figure 6 is an example of updating the frequency search interval based on the first interval in an electronic device according to various embodiments.

According to various embodiments referring to FIG. 6 , the electronic device 101 may perform a search 600 of the B1 frequency band based on a designated first frequency search interval 602 (eg, about 300 kHz). According to one embodiment, the electronic device 101 may perform a search for frequency 25 (EARFCN), which is the first frequency of the B1 frequency band. After completing the search for frequency 25, the electronic device 101 may perform a search for frequency 28 based on the designated first frequency search interval 602. For example, for the search of frequency 28, the frequency (EARFCN) of the B1 frequency band is set in units of approximately 100 kHz, so the frequency to perform the search after frequency 25 based on the specified first frequency search interval (e.g., approximately 300 kHz) can be selected. For example, searching for a specific frequency determines whether a signal (or energy) is detected through a specific frequency (e.g., frequency 28) and at least one frequency adjacent to the specific frequency due to the characteristics of the wireless environment (e.g., multipath). It may include a series of actions. For example, at least one adjacent frequency is at least one lower frequency (e.g., the 26th frequency or the 26th frequency and the 27th frequency) and at least one lower frequency (e.g., the 26th frequency or the 26th frequency and the 27th frequency) based on a specific frequency (e.g., the 28th frequency) based on the characteristics of the wireless environment. It may contain one high frequency (e.g. frequency 29 or frequency 29 and frequency 30).

According to various embodiments, when the B1 frequency band satisfies the specified signal detection condition, the electronic device 101 sets the frequency search interval of the B1 frequency band to a specified first interval (e.g., '2') or a specified second interval. Based on this, it can be updated (or extended) at a designated second frequency search interval. The electronic device 101 may perform a search of the B1 frequency band based on the designated second frequency search interval.

According to one embodiment, when performing a search of the B1 frequency band based on a designated second frequency search interval, the electronic device 101 selects a frequency for starting the search within the B1 frequency band based on the number of searches in the frequency band. can be set. For example, when the electronic device 101 performs a search of the first frequency band after updating the frequency search interval (e.g., C = '0', C%intercal_l=0), B1 based on Equation 3 Frequency 25 (EARFCN), which is the first frequency in the frequency band, can be selected as the frequency (614) to start the search. The electronic device 101 may perform a search 610 in the B1 frequency band starting from the frequency 614 (eg, frequency 25) for starting the search. After completing the search for the 25th frequency (EARFCN), which is the frequency 614 for starting the search, the electronic device 101 may perform a search for the 31st frequency based on the designated second frequency search interval 612. there is. For example, when the electronic device 101 performs a search of the second frequency band after updating the frequency search interval (e.g., C = '1', C%intercal_l=1), B1 based on Equation 3 Frequency 28 (EARFCN) of the frequency band can be selected as the frequency (624) to start the search. The electronic device 101 may perform a search 620 in the B1 frequency band starting from the frequency 624 (eg, frequency 28) for starting the search. After completing the search of frequency 28 (EARFCN), which is the frequency 624 for starting the search, the electronic device 101 may perform a search of frequency 34 based on the designated second frequency search interval 612. there is.

Figure 7 is an example of updating the frequency search interval based on the second interval in an electronic device according to various embodiments. For example, the horizontal axis of FIG. 7 may represent the search time of the frequency band.

According to various embodiments referring to FIG. 7, the electronic device 101 selects frequency bands (e.g., B1, B2, Search 700 of B3, B5, B7, B8, B20, and B28) can be performed. For example, the search time of the frequency band based on the designated first frequency search interval may take a first search time (eg, about 16646 ms).

According to various embodiments, the electronic device 101 supports B1, B2, B8, and B28 among the frequency bands (e.g., B1, B2, B3, B5, B7, B8, B20, and B28) supported by the electronic device 101. and B28 frequency bands 704 may be determined to satisfy specified signal detection conditions. Among the frequency bands (e.g., B1, B2, B3, B5, B7, B8, B20, and B28) supported by the electronic device 101, the frequency bands 702 of B3, B5, and B7 meet specified signal detection conditions. It may be judged as unsatisfactory. According to one embodiment, the electronic device 101 sets the frequency search interval of the frequency bands 704 of B1, B2, B8, B20, and B28 that satisfy the specified signal detection condition based on the specified second interval to the specified second interval. It can be updated at a frequency search interval (e.g. approximately 600 kHz).

According to various embodiments, when the electronic device 101 updates the frequency search interval based on the specified second interval, the frequency band is searched a specified second number of times based on the specified second interval set as in Equation 1. The specified second frequency search interval may be additionally updated at the time of repetition. For example, the second specified number of times may be set to a reference value (e.g., 1). As an example, the second designated number of times may be set based on the designated second interval.

According to one embodiment, when the electronic device 101 performs a search 710 of the first frequency band after updating the frequency search interval, the electronic device 101 searches the frequency bands 704 of B1, B2, B8, B20, and B28. The search may be performed using a designated second frequency search interval (eg, approximately 600 kHz), and the frequency bands 702 of B3, B5, and B7 may be searched using a designated first frequency search interval (eg, approximately 300 kHz). In one example, the search time in the frequency band based on the specified first frequency search interval and the specified second frequency search interval is longer than the search time in the frequency band based on the first frequency search interval specified by the second search time (e.g., about 12138 ms). This can be shortened.

According to one embodiment, in the case of a search 720 of the second frequency band after updating the frequency search interval, the electronic device 101 searches the frequency band for a specified second number (e.g., 2). You can check whether the second interval = '2') is exceeded. If the electronic device 101 determines that the number of searches (e.g., 2) of the frequency band is less than or equal to the specified second number, the search 720 of the second frequency band selects the same specified second frequency as the search 710 of the previous frequency band. Based on the search interval, a search of the frequency bands 704 of B1, B2, B8, B20, and B28 may be performed. Frequency bands 702 of B3, B5, and B7 may be searched with a specified first frequency search interval (eg, approximately 300 kHz).

According to one embodiment, in the case of a search 730 of the third frequency band after updating the frequency search interval, the electronic device 101 searches the frequency band (e.g., 3) for a specified second number (e.g., a specified number of times). You can check whether the second interval = '2') is exceeded. When the electronic device 101 determines that the number of searches for the frequency band (e.g., 3) exceeds the second designated number, the electronic device 101 may update the designated second interval based on Equation 1. The electronic device 101 may additionally update the designated second frequency search interval of the frequency bands 704 of B1, B2, B8, B20, and B28 based on the update of the designated second interval. For example, the additionally updated designated second frequency search interval may be referred to as a designated third frequency search interval. The electronic device 101 searches the frequency bands 704 of B1, B2, B8, B20, and B28 with a specified third frequency search interval (e.g., about 900 kHz), and searches the frequency bands 704 of B3, B5, and B7 ( 702) can be searched at a specified first frequency search interval (e.g., about 300 kHz). For example, the search time of the frequency band based on the designated first frequency search interval and the designated third frequency search interval may be relatively shortened to the third search time (e.g., about 10635 ms). For example, the number of searches in the frequency band may be initialized based on additional updates of the specified second frequency search interval.

According to various embodiments, the electronic device 101 operates in frequency bands of the LTE communication method of B1, B3, B5, B7, B20 and/or B2 and of the NR communication method of N1, N3, N26, N48 and/or N93. When supporting frequency bands, at least one frequency band (e.g., B1, B5, B20, N1, N26 and/or N93) can be checked. The electronic device 101 may update the frequency search interval of at least one frequency band (eg, B1, B5, B20, N1, N26, and/or N93) that satisfies the specified signal detection condition. According to one embodiment, the frequency search interval of at least one frequency band (e.g., B1, B5, B20, N1, N26, and/or N93) depends on the operating mode of the application processor and/or whether the electronic device 101 moves. It can be updated based on

FIG. 8 is a flowchart 800 for restoring a frequency search interval in an electronic device according to various embodiments. In the following embodiments, each operation may be performed sequentially, but is not necessarily performed sequentially. For example, the order of each operation may be changed, and at least two operations may be performed in parallel. As an example, the electronic device of FIG. 8 may be the electronic device 101 of FIG. 1 or FIG. 2 .

According to various embodiments referring to FIG. 8, in operation 801, the electronic device (e.g., the processor 120 of FIG. 1 or the processor 200 of FIG. 2) selects a designated frequency band among the frequency bands supported by the electronic device 101. A search for at least one frequency band that satisfies the signal detection conditions may be performed based on a designated second frequency search condition. For example, a search for at least one frequency band that does not satisfy a specified signal detection condition among the frequency bands supported by the electronic device 101 may be performed based on a specified first frequency search condition.

According to various embodiments, in operation 803, the electronic device (e.g., the processor 120 or 200) detects a signal (or energy) in at least one frequency band that satisfies a specified signal detection condition through a search of the frequency band. You can check whether a frequency band exists. For example, a state in which a signal (or energy) is detected may include a state in which a signal (or energy) exceeding a specified reference intensity is detected through a search of a frequency band.

According to various embodiments, an electronic device (e.g., the processor 120 or 200) may detect a frequency band in which a signal (or energy) is detected among at least one frequency band that satisfies a specified signal detection condition (e.g., If 'No' in operation 803), an embodiment for restoring the frequency search interval may end.

According to various embodiments, an electronic device (e.g., the processor 120 or 200) may detect a frequency band in which a signal (or energy) is detected among at least one frequency band that satisfies a specified signal detection condition (e.g., an operation ('Yes' in 803), in operation 805, the frequency search interval of at least one frequency band in which a signal (or energy) is detected may be restored to the designated first frequency search interval.

According to various embodiments, the electronic device 101 may check whether a synchronization signal (eg, SSB) is received through the frequency band in which the signal (or energy) is detected. When the electronic device 101 receives a synchronization signal (e.g., SSB) through a frequency band in which a signal (or energy) is detected, the electronic device 101 searches a specified first frequency for the frequency search interval of at least one frequency band in which the synchronization signal is received. It can also be restored at intervals.

According to various embodiments, a method of operating an electronic device (e.g., the electronic device 101 of FIG. 1 or FIG. 2) includes performing a search for each of a plurality of frequency bands related to cellular communication based on a first frequency search interval. Can include actions. According to one embodiment, a method of operating an electronic device may include detecting at least one frequency band for updating a frequency search interval among a plurality of frequency bands based on a search result of the frequency band. According to one embodiment, a method of operating an electronic device may include updating the frequency search interval of at least one frequency band to a second frequency search interval that is different from the first frequency search interval. According to one embodiment, a method of operating an electronic device includes performing a search for each of at least one frequency band based on a second frequency search interval, wherein the at least one frequency band among the plurality of frequency bands In at least one remaining frequency band excluding , a search may be performed based on the first frequency search interval.

According to various embodiments, the operation of detecting a frequency band includes detecting at least one frequency band in which a signal is not continuously detected a specified number of times based on the search result of the frequency band, and at least one frequency band for updating the frequency search interval. It may include an operation to detect.

According to various embodiments, the operation of updating with the second frequency search interval includes, when the application processor of the electronic device is in an active mode and the electronic device is determined to be in a moving state, searching for at least one frequency band based on the specified first interval. An operation of updating the frequency search interval to a second frequency search interval may be included.

According to various embodiments, the movement state of the electronic device may be confirmed based on at least one of a Doppler shift, a global navigation satellite system (GNSS), or a motion sensor of the electronic device.

According to various embodiments, the operation of updating the second frequency search interval includes, when the application processor of the electronic device is in an inactive mode, a frequency search interval of at least one frequency band based on a specified second interval that is different from the specified first interval. It may include an operation of updating with the second frequency search interval.

According to various embodiments, the operation of updating to the second frequency search interval is based on a specified second interval that is different from the specified first interval when the application processor of the electronic device determines that the electronic device is in an active mode and the electronic device is in a stationary state. It may include updating the frequency search interval of at least one frequency band to the second frequency search interval.

According to various embodiments, a method of operating an electronic device may include, when the frequency search interval of at least one frequency band is updated to a second frequency search interval based on a specified second interval, the second frequency search interval is updated based on the number of searches of the frequency band. An operation to additionally update the search interval may be included.

According to various embodiments, a method of operating an electronic device may include setting a position of a frequency for starting a search within at least one frequency band based on the number of searches in the frequency band.

According to various embodiments, a method of operating an electronic device includes searching at least one frequency band based on a second frequency search interval, where, when a frequency band in which a signal higher than the reference intensity is detected exists, a signal higher than the reference intensity is detected. It may include restoring the frequency search interval of the frequency band to the first frequency search interval.

The embodiments of the present invention disclosed in the specification and drawings are merely presented as specific examples to easily explain the technical content according to the embodiments of the present invention and to aid understanding of the embodiments of the present invention, and do not limit the scope of the embodiments of the present invention. That's not what I want to do. Therefore, the scope of the various embodiments of the present invention should be construed as including all changes or modified forms derived based on the technical idea of the various embodiments of the present invention in addition to the embodiments disclosed herein.

Claims (20)

electronic devices
communications circuitry supporting a plurality of frequency bands associated with cellular communications, and
comprising a processor operatively connected to the communication circuit,
The processor,
Perform a search for each of the plurality of frequency bands based on a first frequency search interval,
Detecting at least one frequency band for updating a frequency search interval among the plurality of frequency bands based on the search results,
Update the frequency search interval of the at least one frequency band to a second frequency search interval that is different from the first frequency search interval,
Perform a search for each of the at least one frequency band based on the second frequency search interval,
An electronic device in which a search is performed on at least one remaining frequency band among the plurality of frequency bands, excluding the at least one frequency band, based on the first frequency search interval.
According to clause 1,
The processor detects at least one frequency band for updating a frequency search interval for at least one frequency band in which a signal has not been detected continuously a specified number of times based on the search results.
According to clause 1,
Further comprising an application processor,
When the processor determines that the application processor is in an active mode and the electronic device is in a moving state, the processor updates the frequency search interval of the at least one frequency band to the second frequency search interval based on a designated first interval. Electronic devices.
According to clause 3,
The processor, when the application processor is in an inactive mode, updates the frequency search interval of the at least one frequency band to the second frequency search interval based on a designated second interval that is different from the designated first interval.
According to clause 3,
When the processor determines that the application processor is in an active mode and the electronic device is in a stopped state, the processor sets the frequency search interval of the at least one frequency band based on a designated second interval that is different from the designated first interval. 2 Electronic device that updates at frequency scan intervals.
According to clause 5,
When the processor updates the frequency search interval of the at least one frequency band to the second frequency search interval based on the designated second interval, the processor additionally sets the second frequency search interval based on the number of searches of the frequency band. Electronic devices that renew.
According to clause 3,
The processor is configured to check the movement state of the electronic device based on at least one of a Doppler shift, a global navigation satellite system (GNSS), or a motion sensor of the electronic device.
According to clause 1,
The processor sets a position of a frequency for starting a search within the at least one frequency band based on the number of searches in the frequency band.
According to clause 8,
The frequency includes an evolved absolute radio frequency channel number (EARFCN) and/or a new radio (NR)-absolute radio frequency channel number (ARFCN).
According to clause 1,
The processor determines whether there is a frequency band in which a signal with a reference intensity or higher is detected through a search of the at least one frequency band based on the second frequency search interval,
An electronic device that restores the frequency search interval of the frequency band in which a signal of the reference intensity or higher is detected to the first frequency search interval when there is a frequency band in which a signal of the reference intensity or higher is detected.
In a method of operating an electronic device,
An operation of performing a search for each of a plurality of frequency bands related to cellular communication based on a first frequency search interval;
An operation of detecting at least one frequency band for updating a frequency search interval among the plurality of frequency bands based on the search results;
updating the frequency search interval of the at least one frequency band to a second frequency search interval different from the first frequency search interval, and
An operation of performing a search for each of the at least one frequency band based on the second frequency search interval,
A method in which at least one remaining frequency band among the plurality of frequency bands, excluding the at least one frequency band, is searched based on the first frequency search interval.
According to clause 11,
The operation of detecting the frequency band is,
A method comprising detecting at least one frequency band in which a signal has not been detected continuously a specified number of times based on the search results to update a frequency search interval.
According to clause 11,
The operation of updating with the second frequency search interval is,
When it is determined that the application processor of the electronic device is in an active mode and the electronic device is in a moving state, updating the frequency search interval of the at least one frequency band to the second frequency search interval based on a designated first interval. How to include .
According to clause 13,
A method of confirming the movement state of the electronic device based on at least one of a Doppler shift, a global navigation satellite system (GNSS), or a motion sensor of the electronic device.
According to clause 13,
The operation of updating with the second frequency search interval is,
When the application processor of the electronic device is in an inactive mode, updating the frequency search interval of the at least one frequency band to the second frequency search interval based on a specified second interval that is different from the specified first interval. method.
According to clause 15,
The operation of updating with the second frequency search interval is,
When the application processor of the electronic device is in an active mode and the electronic device is determined to be in a stopped state, the frequency search interval of the at least one frequency band is set to the second interval based on a specified second interval that is different from the specified first interval. A method comprising updating at a frequency search interval.
According to clause 16,
When the frequency search interval of the at least one frequency band is updated to the second frequency search interval based on the specified second interval, an operation of additionally updating the second frequency search interval based on the number of searches of the frequency band How to include more.
According to clause 11,
The method further includes setting a position of a frequency for starting a search within the at least one frequency band based on the number of searches in the frequency band.
According to clause 18,
The frequency includes an evolved absolute radio frequency channel number (EARFCN) and/or a new radio (NR)-absolute radio frequency channel number (ARFCN).
According to clause 11,
An operation of checking whether a frequency band in which a signal of a reference intensity or higher exists exists through a search of the at least one frequency band based on the second frequency search interval, and
If there is a frequency band in which a signal of the reference intensity or higher is detected, the method further includes restoring the frequency search interval of the frequency band in which the signal of the reference intensity or higher is detected to the first frequency search interval.

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