Method of controlling transmission power of wireless communication and electronic device using same

Abstract

An electronic device including an antenna, a communication circuit, a memory, and a processor is disclosed. The processor may identify the transmission power using a frequency corresponding to resource block information allocated to the electronic device. The transmit power may be generated based on an interpolation of a power limit corresponding to a frequency band allocated to the electronic device.

Description

Technical Field

[0001] Various embodiments disclosed herein relate to a technology for controlling the intensity of transmission power in an electronic device when the electronic device performs wireless communication. Background Art

[0002] The electronic device performs a back-off of the power transmitted through its antenna to meet the specific absorption rate (SAR) standard. The same back-off value is applied within a frequency band. The back-off value of the frequency band is set based on the situation where the SAR value is highest in the highest frequency channel within the frequency band. Summary of the invention

[0003] Technical issues

[0004] An electronic device can perform a backoff of transmission power using the same backoff value within a frequency band, regardless of the allocated radio resources. The backoff value can be set depending on the frequency band to which the allocated radio resources belong. For example, radio resources contained in a relatively low-frequency channel within a frequency band can be allocated to an electronic device. Even within the same frequency band, the SAR may vary depending on the frequency of the channel. Even in the case where a low-frequency channel is allocated and therefore the SAR value is low, the electronic device may perform a backoff corresponding to the backoff value set for the frequency band. Even in the case where a radio resource with a low SAR value is allocated, when a backoff equal to the backoff value set for the frequency band is performed, the amount of power sent by the electronic device may be unnecessarily reduced.

[0005] Various embodiments disclosed herein are intended to provide an electronic device capable of increasing power transmitted by the electronic device within a range satisfying a specific absorption rate standard by controlling a back-off value according to a radio resource allocated within a frequency band.

[0006] Technical Solution

[0007] According to one aspect of the present disclosure, an electronic device is provided, including an antenna, a communication circuit electrically connected to the antenna, a memory storing interpolation data related to a power limit value according to a frequency, and a processor electrically connected to the communication circuit. The processor receives frequency band information associated with a frequency band for wireless communication, bandwidth information associated with a frequency bandwidth, and radio resource information related to at least one resource block (RB) from an external network. The processor identifies the highest frequency value of at least one resource block. The processor identifies a final power limit value using a value obtained by mapping the highest frequency value to the interpolation data stored in the memory. The processor controls the transmission power using the communication circuit and controls the antenna using the final power limit value. The interpolation data is generated based on the interpolation of at least two power limit values ​​corresponding to the frequency band.

[0008] In addition, according to another aspect of the present disclosure, a method for controlling an electronic device is provided, comprising receiving frequency band information associated with a frequency band for wireless communication of the electronic device, bandwidth information associated with a frequency bandwidth, and radio resource information related to at least one resource block (RB) from an external network. The method includes identifying a highest frequency value of at least one resource block. The method includes identifying a final power limit value using a value obtained by mapping the highest frequency value to interpolation data stored in a memory of the electronic device. The method includes controlling the power of a transmission signal using the final power limit value. The interpolation data is generated based on an interpolation of at least two power limit values ​​corresponding to the frequency band.

[0009] According to another aspect of the present disclosure, an electronic device is provided, comprising an antenna, a communication circuit electrically connected to the antenna, and a processor electrically connected to the communication circuit. The processor receives frequency band information associated with a frequency band used by the communication circuit for wireless communication, bandwidth information associated with a frequency bandwidth used by the communication circuit for wireless communication, and radio resource information associated with at least one resource block (RB) allocated to be used by the communication circuit for wireless communication from an external network. The processor generates interpolation data by interpolating at least two power limit values ​​included in the frequency band. The processor identifies the highest frequency value of at least one resource block. The processor maps the highest frequency value to the interpolation data. The processor uses the final power limit value mapped to the highest frequency value in the interpolation data to control the power sent by the communication circuit to the antenna.

[0010] Beneficial Effects

[0011] According to the embodiments disclosed herein, the power transmitted by an electronic device may be increased within a range that satisfies a specific absorption rate standard.

[0012] According to the embodiments disclosed herein, the electronic device can improve the communication quality by controlling the transmission power based on the frequency of the channel.

[0013] Furthermore, various effects directly or indirectly recognized by the present disclosure can be provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a block diagram illustrating electronic devices in a network environment according to various embodiments.

[0015] Figure 2 is a diagram illustrating that an electronic device according to the present disclosure performs wireless communication.

[0016] Figure 3 is a flowchart illustrating a method of controlling transmission power of wireless communication performed by an electronic device according to the present disclosure.

[0017] Figure 4 is a view illustrating that an electronic device according to the present disclosure generates interpolation data based on at least two power limit values ​​included in a frequency band.

[0018] Figure 5 is a view showing that an electronic device according to the present disclosure maps a highest frequency value of a resource block to interpolation data.

[0019] Figure 6 is a view showing that an electronic device according to the present disclosure maps the highest frequency values ​​of consecutive resource blocks to interpolation data.

[0020] Figure 7 is a view showing mapping of a highest frequency value of each of spaced resource blocks to interpolation data of an electronic device according to the present disclosure.

[0021] Figure 8 is a view showing specific absorption rate values ​​according to frequencies of resource blocks allocated to an electronic device according to the present disclosure within a frequency band.

[0022] Fig. 9 is a view illustrating that an amplifier connected to an antenna of an electronic device according to the present disclosure generates interpolation data when the amplifier has different gain values ​​depending on frequencies.

[0023] Fig.10 is a view illustrating that an amplifier connected to an antenna of an electronic device according to the present disclosure generates interpolation data when the amplifier has different gain values ​​depending on frequencies.

[0024] Fig.11 is a flowchart illustrating a method of controlling transmission power of wireless communication performed by an electronic device according to the present disclosure.

[0025] Regarding the description of the drawings, the same or similar reference numerals may be used for the same or similar components. DETAILED DESCRIPTION

[0026] Hereinafter, various embodiments of the present disclosure may be described with reference to the accompanying drawings. Therefore, those of ordinary skill in the art will recognize that various modifications, equivalents and / or substitutions may be made to the various embodiments described herein without departing from the scope and spirit of the present disclosure. With respect to the description of the accompanying drawings, similar components may be marked by similar reference numerals.

[0027] Figure 1 1 is a block diagram illustrating an electronic device 101 in a network environment 100 according to various embodiments. Figure 1 , the electronic device 101 in the network environment 100 may communicate with the electronic device 102 via the first network 198 (e.g., a short-range wireless communication network), or communicate with at least one of the electronic device 104 or the server 108 via the second network 199 (e.g., a long-range wireless communication network). According to an embodiment, the electronic device 101 may communicate with the electronic device 104 via the server 108. According to an embodiment, the electronic device 101 may include a processor 120, a memory 130, an input module 150, a sound output module 155, a display module 160, an audio module 170, a sensor module 176, an interface 177, a connection terminal 178, a haptic module 179, a camera module 180, a power management module 188, a battery 189, a communication module 190, a subscriber identification module (SIM) 196, or an antenna module 197. In some embodiments, at least one component (e.g., the connection terminal 178) may be omitted from the electronic device 101, or one or more other components may be added in the electronic device 101. In some embodiments, some components (eg, sensor module 176, camera module 180, or antenna module 197) may be implemented as a single component (eg, display module 160).

[0028] The processor 120 may execute, for example, software (e.g., program 140) to control at least one other component (e.g., hardware or software component) of the electronic device 101 coupled to the processor 120, and may perform various data processing or calculations. According to one embodiment, as at least part of the data processing or calculation, the processor 120 may store a command or data received from another component (e.g., sensor module 176 or communication module 190) in the volatile memory 132, process the command or data stored in the volatile memory 132, and store the resulting data in the non-volatile memory 134. According to an embodiment, the processor 120 may include a main processor 121 (e.g., a central processing unit (CPU) or an application processor (AP)) or an auxiliary processor 123 (e.g., a graphics processing unit (GPU), a neural processing unit (NPU), an image signal processor (ISP), a sensor hub processor, or a communication processor (CP)) that may operate independently of the main processor 121 or in conjunction with the main processor 121. For example, when the electronic device 101 includes a main processor 121 and an auxiliary processor 123, the auxiliary processor 123 may be adapted to consume less power than the main processor 121 or be specific to a specified function. The auxiliary processor 123 may be implemented separately from the main processor 121 or as a part of the main processor 121.

[0029] The auxiliary processor 123 may replace the main processor 121 when the main processor 121 is in an inactive (e.g., sleep) state, or control at least some of the functions or states related to at least one of the components of the electronic device 101 (e.g., display module 160, sensor module 176, or communication module 190) together with the main processor 121 when the main processor 121 is in an active state (e.g., executing an application). According to an embodiment, the auxiliary processor 123 (e.g., an image signal processor or a communication processor) may be implemented as a part of another component (e.g., camera module 180 or communication module 190) related to the auxiliary processor 123 function. According to an embodiment, the auxiliary processor 123 (e.g., a neural processing unit) may include a hardware structure specified for artificial intelligence model processing. The artificial intelligence model may be generated by machine learning. Such learning may be performed, for example, by the electronic device 101 that performs artificial intelligence or via a separate server (e.g., server 108). The learning algorithm may include, but is not limited to, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning. The artificial intelligence model may include multiple artificial neural network layers. The artificial neural network can be a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted Boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), a deep Q network, or a combination of two or more thereof, but is not limited thereto. The artificial intelligence model can additionally or alternatively include a software structure in addition to a hardware structure.

[0030] The memory 130 may store various data used by at least one component of the electronic device 101 (e.g., the processor 120 or the sensor module 176). The various data may include, for example, input data or output data of software (e.g., the program 140) and commands related thereto. The memory 130 may include a volatile memory 132 or a non-volatile memory 134.

[0031] The program 140 may be stored as software in the memory 130 , and may include, for example, an operating system (OS) 142 , middleware 144 , or applications 146 .

[0032] The input module 150 may receive a command or data to be used by another component (e.g., the processor 120) of the electronic device 101 from outside (e.g., a user) of the electronic device 101. The input module 150 may include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., a stylus).

[0033] The sound output module 155 can 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. The speaker can be used for general purposes, such as playing multimedia or playing recordings. The receiver can be used to receive incoming calls. According to an embodiment, the receiver can be implemented as a part of the speaker or as a part of the speaker.

[0034] The display module 160 can visually provide information to the outside of the electronic device 101 (e.g., a user). The display module 160 may include, for example, a display, a hologram device, or a projector, and a control circuit for controlling a corresponding one of the display, the hologram device, and the projector. According to an embodiment, the display module 160 may include a touch sensor adapted to detect a touch, or a pressure sensor adapted to measure the strength of a force caused by a touch.

[0035] The audio module 170 can convert sound into an electrical signal, and vice versa. According to an embodiment, the audio module 170 can obtain sound via the input module 150, or output sound via the sound output module 155 or an earphone of an external electronic device (e.g., electronic device 102) directly (e.g., wired) or wirelessly coupled to the electronic device 101.

[0036] The sensor module 176 may detect an operating state (e.g., power or temperature) of the electronic device 101 or an environmental state (e.g., a user's state) outside the electronic device 101, and then generate an electrical signal or data value corresponding to the detected state. According to an embodiment, the sensor module 176 may include, for example, a gesture sensor, a gyro sensor, an atmospheric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an infrared (IR) sensor, a biosensor, a temperature sensor, a humidity sensor, or an illumination sensor.

[0037] The interface 177 may support one or more designated protocols to be used for direct (e.g., wired) or wireless coupling of the electronic device 101 with an external electronic device (e.g., the electronic device 102). According to an embodiment, the interface 177 may include, for example, a high-definition multimedia interface (HDMI), a universal serial bus (USB) interface, a secure digital (SD) card interface, or an audio interface.

[0038] The connection terminal 178 may include a connector, via which the electronic device 101 may be physically connected to an external electronic device (e.g., the electronic device 102). According to an embodiment, the connection terminal 178 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

[0039] The haptic module 179 may convert the electrical signal into mechanical stimulation (eg, vibration or movement) or electrical stimulation, which may be recognized by the user via his tactile sense or kinesthetic sense. According to an embodiment, the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulator.

[0040] The camera module 180 may capture still images or moving images. According to an embodiment, the camera module 180 may include one or more lenses, image sensors, image signal processors, or flashes.

[0041] The power management module 188 may manage power supplied to the electronic device 101. According to one embodiment, the power management module 188 may be implemented as, for example, at least a portion of a power management integrated circuit (PMIC).

[0042] The battery 189 may supply power to at least one component of the electronic device 101. According to an embodiment, the battery 189 may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

[0043] The communication module 190 may support establishing a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device 101 and an external electronic device (e.g., electronic device 102, electronic device 104, or server 108), and perform communication via the established communication channel. The communication module 190 may include one or more communication processors that can operate independently of the processor 120 (e.g., an application processor (AP)) and support direct (e.g., wired) communication or wireless communication. According to an embodiment, the communication module 190 may include a wireless communication module 192 (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 194 (e.g., a local area network (LAN) communication module or a power line communication (PLC) module). A corresponding one of these communication modules can communicate with an external electronic device via a first network 198 (e.g., a short-range communication network such as Bluetooth, Wireless Fidelity (Wi-Fi) Direct, or Infrared Data Association (IrDA)) or a second network 199 (e.g., a long-range communication network such as a traditional cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a LAN or a wide area network (WAN))). These various types of communication modules can be implemented as a single component (e.g., a single chip), or can be implemented as multiple components separated from each other (e.g., multiple chips). The wireless communication module 192 can use the subscriber information (e.g., International Mobile Subscriber Identity (IMSI)) stored in the subscriber identification module 196 to identify and authenticate the electronic device 101 in the communication network (such as the first network 198 or the second network 199).

[0044] The wireless communication module 192 can support 5G networks and next-generation communication technologies after the 4G network, such as new radio (NR) access technology. NR access technology can support enhanced mobile broadband (eMBB), massive machine type communication (mMTC) or ultra-reliable and low-latency communication (URLLC). The wireless communication module 192 can support high-frequency bands (e.g., mmWave bands) to achieve, for example, high data transmission rates. The wireless communication module 192 can support various technologies for ensuring performance on high-frequency bands, such as, for example, beamforming, massive multiple input and multiple output (massive MIMO), full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming or massive antennas. The wireless communication module 192 can support various requirements specified in the electronic device 101, an external electronic device (e.g., an electronic device 104) or a network system (e.g., a second network 199). According to an embodiment, the wireless communication module 192 can support a peak data rate for implementing eMBB (e.g., 20 Gbps or greater), loss coverage for implementing mMTC (e.g., 164 dB or less), or U-plane delay for implementing URLLC (e.g., 0.5 ms or less for each of the downlink (DL) and uplink (UL), or 1 ms or less round trip).

[0045] The antenna module 197 may transmit a signal or power to or receive a signal or power from the outside of the electronic device 101 (e.g., an external electronic device). According to an embodiment, the antenna module 197 may include an antenna including a radiation element formed of a conductive material or a conductive pattern formed in or on a substrate (e.g., a printed circuit board (PCB)). According to an embodiment, the antenna module 197 may include a plurality of antennas (e.g., an array antenna). In this case, at least one antenna suitable for a communication scheme used in a communication network such as the first network 198 or the second network 199 may be selected from the plurality of antennas by, for example, the communication module 190 (e.g., the wireless communication module 192). Then, a signal or power may be transmitted or received between the communication module 190 and the external electronic device via the selected at least one antenna. According to an embodiment, another component (e.g., a radio frequency integrated circuit (RFIC)) other than the radiation element may be additionally formed as a part of the antenna module 197.

[0046] According to various embodiments, the antenna module 197 may form a millimeter wave (mmWave) antenna module. According to an embodiment, the millimeter wave antenna module may include a printed circuit board, an RFIC disposed on or adjacent to a first surface (e.g., bottom surface) of the printed circuit board and capable of supporting a specified high frequency band (e.g., millimeter wave band), and a plurality of antennas (e.g., array antennas) disposed on or adjacent to a second surface (e.g., top surface or side surface) of the printed circuit board and capable of transmitting or receiving signals of the specified high frequency band.

[0047] At least some of the above components can be coupled to each other and communicate signals (e.g., commands or data) therebetween via an inter-peripheral communication scheme (e.g., a bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)).

[0048] According to an embodiment, a command or data may be sent or received between the electronic device 101 and the external electronic device 104 via a server 108 coupled to the second network 199. Each of the electronic devices 102 or 104 may be a device of the same type or a different type as the electronic device 101. According to an embodiment, all or some operations to be performed at the electronic device 101 may be performed at one or more of the external electronic devices 102, 104, or 108. For example, if the electronic device 101 should automatically or in response to a request from a user or another device and perform a function or service, the electronic device 101 may request one or more external electronic devices to perform at least a portion of the function or service instead of or in addition to performing the function or service. The one or more external electronic devices receiving the request may perform at least a portion of the requested function or service, or an additional function or additional service related to the request, and transmit the result of the execution to the electronic device 101. The electronic device 101 may provide the result as at least a part of the reply to the request with or without further processing the result. To this end, for example, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used. The electronic device 101 can provide ultra-low latency services using, for example, distributed computing or mobile edge computing. In another embodiment, the external electronic device 104 may include an Internet of Things (IoT) device. The server 108 may be an intelligent server using machine learning and / or neural networks. According to an embodiment, the external electronic device 104 or the server 108 may be included in the second network 199. The electronic device 101 can be applied to intelligent services (e.g., smart homes, smart cities, smart cars, or health care) based on 5G communication technology or IoT-related technologies.

[0049] Figure 2FIG. 1 is a diagram showing an electronic device (eg, Figure 1 Figure 200 of the electronic device 101) performing wireless communication.

[0050] According to an embodiment, the electronic device 101 may include a processor 120, a memory 130, a communication circuit 220, and an antenna 230. The processor 120 may include a communication processor (CP) 210. The communication processor 210 may be formed in a single chip or a single package with the processor 120. The communication circuit 220 may include a transceiver 221 and a radio frequency front end (RFFE) 223.

[0051] The communication processor 210 may support establishing a communication channel to be used for wireless communication with the cellular network 240. The communication processor 210 may perform wireless communication using the established communication channel. When sending a signal, the communication processor 210 may generate a baseband signal for performing wireless communication. When sending a signal, the communication processor 210 may send the baseband signal to the transceiver 221. When receiving a signal, the communication processor 210 may receive the baseband signal from the transceiver 221. When receiving a signal, the communication processor 210 may process the baseband signal.

[0052] The transceiver 221 may convert a baseband signal into an RF signal (e.g., up-conversion) or convert an RF signal into a baseband signal (e.g., down-conversion) to perform wireless communication. In the case of transmitting a signal, the transceiver 221 may receive a baseband signal from the communication processor 210. In the case of transmitting a signal, the transceiver 221 may convert the baseband signal into an RF signal of a frequency band used in the cellular network 240. In the case of transmitting a signal, the transceiver 221 may send the RF signal to the antenna 230 through the RFFE 223. In the case of receiving a signal, the transceiver 221 may receive a pre-processed RF signal from the RFFE 223. When receiving a signal, the transceiver 221 may convert the pre-processed RF signal into a baseband signal. When receiving, the transceiver 221 may send the baseband signal to the communication processor 210.

[0053] The RFFE 223 may pre-process the RF signal received from the cellular network 240 through the antenna 230. The RFFE 223 may transmit the pre-processed RF signal to the transceiver 221. For example, the RFFE 223 may include at least one of at least one amplifier, at least one filter, or at least one phase shifter for amplifying the signal. In an example, the communication processor 210 may control the transmission power of the signal transmitted through the antenna 230 by controlling the gain of at least one amplifier included in the RFFE 223. The communication processor 210 may control the amount of signal amplification performed by the RFFE 223 directly or through the transceiver 221.

[0054] The electronic device 101 may transmit an RF signal received from the RFFE 223 through the antenna 230, or receive an RF signal from the cellular network 240. When the electronic device 101 supports 5G (5th generation) communication, the antenna 230 may have an array structure including a plurality of radiation elements arranged to support beamforming.

[0055] Meanwhile, the electromagnetic waves generated when the RF signal is transmitted from the electronic device 101 may affect the user of the electronic device 101. The value of the electromagnetic wave absorbed by the human body may be defined as the specific absorption rate (SAR). The specific absorption rate may be defined as the watt (W) value of the electromagnetic energy absorbed by 1kg of the human body per unit time. The specific absorption rate may vary according to the frequency of the transmitted RF signal. For example, the specific absorption rate may have a physical property that increases as the frequency of the transmitted RF signal increases. The specific absorption rate may vary according to the amount of radio resources allocated to the electronic device 101 that transmits the RF signal. For example, a property may be provided in which the observed specific absorption rate increases as the number of resource blocks (RBs) allocated to the electronic device 101 decreases. In the following disclosure, the resource blocks allocated to the electronic device 101 may refer to the number of resource blocks allocated to the electronic device 101 in the frequency domain. For example, the resource blocks allocated to the electronic device 101 may refer to the number of resource blocks in the frequency domain allocated for the uplink transmission of the electronic device 101 at a point in time. In an example, the electronic device 101 may receive an uplink grant from a base station of the cellular network 240 and identify the number of resource blocks allocated to the electronic device 101 from the uplink grant.

[0056] The communication processor 210 may control the strength of the RF signal transmitted through the antenna 230 based on the specific absorption rate. The communication processor 210 may limit the maximum size of the RF signal based on the SAR. The communication processor 210 may set a power limit value Plimit to limit the maximum amount of the RF signal for each frequency band to which the RF signal belongs. The power limit value may be set to a maximum power value established to keep the SAR of the transmitted RF signal at or below a specified standard. The communication processor 210 may set the power limit value by assuming a situation in which the highest frequency within the frequency band is used and a radio resource with a minimum frequency bandwidth is allocated. The communication processor 210 may store the power limit value set for each frequency band in the memory 130. The communication processor 210 may limit the strength of the RF signal transmitted by the electronic device 101 through the antenna 230 to or below the power limit value set for the frequency band to which the RF signal belongs.

[0057] According to the conventional method of controlling the transmission power of wireless communications, by applying the same power limit within a frequency band, the strength of the RF signal is uniformly limited to or below the power limit even when a lower frequency within the frequency band is used or a radio resource with a larger frequency bandwidth is allocated, resulting in an unnecessary reduction in the strength of the RF signal.

[0058] Hereinafter, a method for controlling transmission power of wireless communication according to the present disclosure is described. The method for controlling transmission power of wireless communication according to the present disclosure may provide a method for applying different power limits according to the frequency of radio resources allocated within a frequency band. The method for controlling transmission power of wireless communication according to the present disclosure may provide a method for applying a higher power limit when a lower frequency is used within a frequency band or when a radio resource with a larger frequency bandwidth is allocated.

[0059] Figure 3 is a diagram showing a method of performing a process ... Figure 1 Flowchart 300 of a method for controlling transmission power of wireless communication performed by an electronic device 101 in FIG.

[0060] According to an embodiment, in operation 310, a processor (eg, Figure 2 The communication processor 210 in the embodiment may receive frequency band information, bandwidth information, and radio resource information related to at least one resource block. For example, the electronic device 101 may receive information received from a base station (e.g., Figure 2 The frequency band information, bandwidth information and radio resource information can be obtained or identified from the information of the base station of the cellular network 240 in the network.

[0061] The frequency band information may be a communication circuit with the electronic device 101 (eg, Figure 2 The communication circuit 220 in the communication circuit 220) may be used for wireless communication. The frequency band may be, for example, a frequency range specified by the third generation partnership project (3GPP) standard. For example, based on the frequency division duplex (FDD) mode, the frequency band used for LTE communication may include B1 to B32, B65 to B76, and B85 to B88 frequency bands. The electronic device 101 may obtain the frequency band information during the process of searching for a cell to which the electronic device 101 is connected or connecting (e.g., attaching) to a cell. The memory (e.g., Figure 2 The memory 130 in the memory 130 may store information about frequency bands (eg, information about frequency bands associated with a country, a mobile network operation, and / or a radio access technology (RAT)).

[0062] The bandwidth information may be information associated with a frequency bandwidth of a cell connected by a base station to the electronic device 101. For example, the electronic device 101 may obtain the bandwidth information by receiving system information from the cell.

[0063] The radio resource information may be information related to at least one resource block allocated to the electronic device 101 for wireless communication. A resource block may be a unit block that may be allocated to the electronic device 101 in terms of frequency. For example, a resource block may have a frequency bandwidth of 0.2 MHz. At least one resource block that may be used for uplink signal transmission of the electronic device 101 may be allocated from the base station to the electronic device 101. The electronic device 101 may receive information (e.g., information about the number of resource blocks and information about the starting resource block) for allocating one or more resource blocks within the frequency band from the base station. For example, a plurality of continuous resource blocks may be allocated to the electronic device 101 on the frequency axis. For example, a plurality of resource blocks spaced apart from each other on the frequency axis may be allocated to the electronic device 101. The number of at least one resource block allocated to the electronic device 101 may be variably set according to the communication situation, the total number of terminals connected to the base station connected to the electronic device 101, and the type of data transmitted by the wireless communication performed by the electronic device 101.

[0064] The electronic device 101 can receive data from an external network (for example, Figure 2 The electronic device 101 may receive the frequency band information, bandwidth information, and radio resource information from the cellular network 240 in the wireless communication network. For example, the electronic device 101 may obtain the frequency band information, bandwidth information, and / or radio resource information through network search (e.g., cell search), connection (e.g., attachment), and / or resource allocation (e.g., uplink grant).

[0065] The processor 210 of the electronic device 101 may interpolate at least two power limit values ​​to generate interpolation data in operation 320 .

[0066] The power limit value may represent a maximum transmission power value of the communication circuit 220, which is set to be transmitted through the antenna (eg, Figure 2 The specific absorption rate (SAR) of the RF signal output by the antenna 230 in the antenna 230 is maintained below the specified specific absorption rate standard. The power limit value may vary according to the frequency. Since the SAR increases with increasing frequency due to physical properties, the power limit value (e.g., the maximum transmission power) may decrease with increasing frequency.

[0067] At least two power limits that meet the specific absorption rate standard at the frequency corresponding to at least one resource block may be set. At least two power limits may be obtained by measuring the power limits at at least two frequencies belonging to the frequency band. At least two power limits may be a minimum power limit and a maximum power limit, the minimum power limit being the power limit of the minimum resource block of the frequency band, and the maximum power limit being the power limit of the maximum resource block of the frequency band. The minimum resource block of the frequency band may be the resource block with the lowest frequency among the multiple resource blocks belonging to the frequency band. The highest resource block of the frequency band may be the resource block with the highest frequency among the multiple resource blocks belonging to the frequency band. For example, when there are 50 resource blocks in the B1 frequency band, the lowest resource block in the B1 frequency band may be 0RB, which has the lowest frequency among the 50 resource blocks, and the highest resource block may be 49RB, which has the highest frequency among the 50 resource blocks.

[0068] The processor 210 may perform an operation of calculating a value between two values ​​by connecting the two values ​​with a straight line, so as to perform an operation for interpolating the two values. The processor 210 may calculate a power limit between two power limits by connecting the two power limits with a straight line, so as to interpolate the two power limits. Therefore, the processor 210 may calculate a power limit in a frequency range between frequency values ​​corresponding to the two power limits, respectively. For example, the processor 210 may calculate a power limit corresponding to a frequency value belonging to the entire frequency band when the lowest power limit and the highest power limit are interpolated. The processor 210 may generate data in the form of a straight line graph on the frequency axis using the power limit obtained as a result of interpolating the two power limits. The data in the form of a straight line graph generated by the processor 210 may be defined as interpolation data. The processor 210 may store the interpolation data in the memory 130.

[0069] As described above, the processor 210 may store interpolated data related to the power limit value according to the frequency in a memory (eg, Figure 2 As another example, the manufacturer of the electronic device 101 may store the interpolation data generated by interpolating the at least two power limit values ​​in the memory 130 when the electronic device 101 is released.

[0070] In operation 330, the processor 210 of the electronic device 101 may calculate a maximum frequency value of at least one resource block. The processor 210 may calculate the maximum frequency value of at least one resource block allocated to the electronic device 101 by adding the frequency range of the at least one resource block to the starting frequency of the at least one resource block allocated to the electronic device 101. For example, when the frequency range (e.g., bandwidth) of one resource block is 0.2 MHz, the processor 210 may obtain the maximum frequency value of at least one resource block allocated to the electronic device 101 by adding a value obtained by multiplying the number of allocated resource blocks by 0.2 MHz to the starting frequency of the at least one resource block allocated to the electronic device 101.

[0071] In operation 340, the processor 210 of the electronic device 101 may map the highest frequency value to the interpolation data. The processor 210 may obtain the power limit value at the highest frequency value as the final power limit value. The final power limit value may vary depending on the highest frequency value of at least one allocated resource block. When the highest frequency value decreases, the final power limit value may increase.

[0072] In operation 350, the processor 210 of the electronic device 101 may use the final power limit value to limit the power transmitted by the communication circuit 220 to the antenna 230. The processor 210 may limit the maximum amount of power transmitted by the communication circuit 220 to the antenna 230 to the final power limit value. When the highest frequency value is reduced, the processor 210 may increase the maximum amount of power transmitted by the communication circuit 220 to the antenna 230. When the highest frequency value is reduced as described above, the processor 210 may increase the power transmitted by the electronic device 101 through the antenna 230 within a range that satisfies the specific absorption rate standard.

[0073] Figure 4 FIG. 1 is a diagram showing an electronic device (eg, Figure 1 An electronic device 101 in the embodiment of the present invention generates an interpolation data 415 based on at least two power limit values ​​421 and 422 included in the frequency band 410.

[0074] For example, the frequency band 410 may be set by dividing the frequency into ranges according to the mode of wireless communication, the operator providing the wireless communication, and the generation of the wireless communication. The frequency band 410 may include a plurality of channels. Each of the channels may include a plurality of resource blocks. For example, the frequency range of one resource block may be 0.2 MHz.

[0075] The lowest resource block 411 may be a resource block having the lowest frequency among the resource blocks included in the frequency band 410. The processor (eg, Figure 2The communication processor 210 in the frequency band 410 may obtain the lowest power limit value 421 by measuring the power limit value at the highest frequency 412 of the lowest resource block 411. For example, when the frequency band 410 includes 50 resource blocks from 0RB to 49RB in order of frequency size, since 0RB is the lowest resource block 411, the processor 210 may obtain the lowest power limit value 421 by measuring the power limit value at the highest frequency 412 of 0RB.

[0076] The highest resource block 413 may be a resource block having the highest frequency among the resource blocks included in the frequency band 410. The processor 210 may obtain the highest power limit value 422 by measuring the power limit value at the highest frequency 414 of the highest resource block 413. For example, when the frequency band 410 includes 50 resource blocks from 0 RB to 49 RB in order of frequency, since 049B is the highest resource block 413, the processor 210 may obtain the highest power limit value 422 by measuring the power limit value at the highest frequency 414 of 49 RB.

[0077] In an example, the processor 210 may interpolate the lowest power limit value 421 and the highest power limit value 422 to generate interpolated data 415 for the frequency band 410. The power limits may have a linear relationship within the frequency band 410. The processor 210 may interpolate the lowest power limit value 421 and the highest power limit value 422 to calculate power limits corresponding to all frequencies within the frequency band 410. The processor 210 may store the generated interpolated data 415 in a memory (e.g., Figure 2 In the memory 130).

[0078] As another example, refer to Figure 4 The described method of generating the interpolation data 415 based on the at least two power limit values ​​421 and 422 included in the frequency band 410 may be performed by the manufacturer of the electronic device 101. For example, the manufacturer of the electronic device 101 may generate the interpolation data 415 when manufacturing the electronic device 101, store the generated interpolation data 415 in a memory (e.g., Figure 2 The electronic device 101 is then shipped.

[0079] Figure 5 FIG. 1 is a diagram showing an electronic device (eg, Figure 1 The electronic device 101 in the diagram maps the highest frequency value 512 of the resource block 511 to a view of the interpolated data 415.

[0080] According to an embodiment, resource block 511 may be allocated to electronic device 101 from an external network. Electronic device 101 may receive information related to resource block 511 from the external network. Electronic device 101 may identify a starting frequency of allocated resource block 511. For example, a frequency range of resource block 511 may be set to 0.2 MHz. A processor (e.g., Figure 2 The communication processor 210 in the example embodiment may calculate the highest frequency value 512 of the allocated resource block 511. The processor 210 may map the highest frequency value 512 to the interpolation data 415.

[0081] The processor 210 may store at least two power limit values ​​421 and 422 and the interpolation data 415 in a memory (eg, Figure 2 The processor 210 may load the interpolation data 415 from the memory 130 in response to receiving the radio resource information. The processor 210 may map the highest frequency value 512 to the interpolation data 415 to calculate the final power limit value 521.

[0082] The processor 210 may map the highest frequency value 512 to the interpolated data 415 to calculate a final power limit value 521 for the resource block 511. The processor 210 may set the final power limit value 521 so that the final power limit value 521 meets the specific absorption rate (SAR) standard at the highest frequency value 512. The SAR standard may have different values ​​depending on the frequency. Accordingly, the final power limit value 521 may have different values ​​depending on the frequency. As the frequency increases, the SAR increases, requiring stricter restrictions, which may result in a reduction in the final power limit value 521. As the frequency decreases, the degree of power restrictions may be relaxed, which may increase the final power limit value 521.

[0083] The processor 210 may limit the power transmitted to the antenna 230 by the communication circuit 220 using the final power limit 521. The final power limit 521 may have a higher value than the highest power limit 422 of the frequency band 410. By limiting the power transmitted to the antenna 230 by the communication circuit 220 using the final power limit 521, the processor 210 may increase the power transmitted to the antenna 230 by the communication circuit 220 compared to when the power transmitted to the antenna 230 by the communication circuit 220 is limited using the highest power limit 422 of each frequency band 410. The processor 210 may increase the power transmitted by the electronic device 101 through the antenna 230 within a range satisfying the SAR standard by limiting the power transmitted to the antenna 230 by the communication circuit 220 using the final power limit 521.

[0084] For example, refer to Figure 5The described method of mapping the highest frequency value 512 of the resource block 511 to the interpolation data 415 may be performed by the manufacturer of the electronic device 101. The manufacturer of the electronic device 101 may map the highest frequency value 512 of the resource block 511 to the interpolation data 415 when manufacturing the electronic device 101, and store the interpolation data 415 including the mapped value in a memory (e.g., Figure 2 The electronic device 101 stores the transmitted power in the memory 130 and ships the electronic device 101. The electronic device 101 can use the value stored in the memory to identify the transmitted power.

[0085] Figure 6 FIG. 1 is a diagram showing an electronic device (eg, Figure 1 The electronic device 101 in the figure maps the highest frequency value 616 of consecutive resource blocks 611, 612, 613, 614 and 615 to a view of the interpolated data 415.

[0086] According to an embodiment, a plurality of resource blocks 611, 612, 613, 614, and 615 included in the frequency band 410 may be continuously allocated to the electronic device 101 on the frequency axis. Figure 2 The cellular network 240 in the frequency band 410 allocates five consecutive resource blocks 611, 612, 613, 614 and 615 among the resource blocks included in the frequency band 410 to the electronic device 101 on the frequency axis of the frequency band 410.

[0087] When a plurality of resource blocks 611, 612, 613, 614, and 615 are continuously allocated on the frequency axis of the frequency band 410, the processor (eg, Figure 2 The communication processor 210 in FIG. 2 may map the highest frequency value 616 included in the highest resource block 615 among the at least one resource block 611, 612, 613, 614, and 615 to the interpolation data 415. For example, the processor 210 may map the highest frequency value 616 included in the highest resource block 615 among the five consecutive resource blocks 611, 612, 613, 614, and 615 to the interpolation data 415.

[0088] The processor 210 may obtain the final power limit value 621 by mapping the highest frequency value 616 included in the highest resource block 615 to the interpolation data 415. When the processor 210 is allocated a plurality of consecutive resource blocks 611, 612, 613, 614, and 615, by mapping the highest frequency value 616 included in the highest resource block 615 to the interpolation data 415, the processor 210 may calculate the final power limit value 621 while reducing the number of times the highest frequency value 616 is mapped to the interpolation data 415. The processor 210 may calculate a single final power limit value 621 that satisfies the SAR standard for the plurality of consecutive resource blocks 611, 612, 613, 614, and 615. The single final power limit value 621 may have a higher value than the highest power limit value 422 of the frequency band 410. The processor 210 may limit the power transmitted by the communication circuit 220 to the antenna 230 using the single final power limit value 621. By limiting the power sent by the communication circuit 220 to the antenna 230 using a single final power limit 621, the processor 210 can increase the power sent by the communication circuit 220 to the antenna 230 compared to when the power sent by the communication circuit 220 to the antenna 230 is limited using the highest power limit 422 for each frequency band 410.

[0089] Figure 7 7 is a diagram showing that the highest frequency values ​​712 and 714 of the respective resource blocks 711 and 713 spaced apart according to the present disclosure are mapped to an electronic device (eg, Figure 1 A view of interpolated data 415 of an electronic device 101 in FIG.

[0090] According to an embodiment, resource blocks 711 and 713 included in the frequency band 410 may be allocated to the electronic device 101 to be spaced apart from each other on the frequency axis. Figure 2 The cellular network 240 in the frequency band 410 allocates a first resource block 711 and a second resource block 713 to the electronic device 101, and the first resource block 711 and the second resource block 713 are spaced apart on the frequency axis of the frequency band 410 among the resource blocks included in the frequency band 410.

[0091] When the first resource block 711 and the second resource block 713 are allocated to be spaced apart from each other on the frequency axis of the frequency band 410, the processor (eg, Figure 2 The communication processor 210 in FIG. 4 may map the first frequency value 712 which is the highest frequency value of the first resource block 711 and the second frequency value 714 which is the highest frequency value of the second resource block 713 to the interpolation data 415. When each of the plurality of resource blocks 711 and 713 is allocated to be spaced apart on the frequency axis of the frequency band 410, the processor 210 may map the corresponding highest frequency values ​​712 and 714 of the plurality of resource blocks 711 and 713 to the interpolation data 415.

[0092] The processor 210 may obtain a plurality of final power limit values ​​721 and 722 by mapping the respective highest frequency values ​​712 and 714 of the plurality of resource blocks 711 and 713 spaced apart on the frequency axis of the frequency band 410 to the interpolation data 415. The processor 210 may calculate a plurality of final power limit values ​​721 and 722 satisfying the SAR standard for the plurality of resource blocks 711 and 713 spaced apart on the frequency axis of the frequency band 410, respectively. The processor 210 may limit the power transmitted by the communication circuit 220 to the antenna 230 using the plurality of final power limit values ​​721 and 722. Each of the plurality of final power limit values ​​721 and 722 may have a value higher than the highest power limit value 422 of the frequency band 410. By limiting the power sent by the communication circuit 220 to the antenna 230 using multiple final power limits 721 and 722, the processor 210 can increase the power sent by the communication circuit 220 to the antenna 230 compared to when the highest power limit 422 of each frequency band 410 is used to limit the power sent by the communication circuit 220 to the antenna 230.

[0093] Figure 8 is a diagram showing the allocation of the frequency band 410 to the electronic device according to the present disclosure (eg, Figure 1 A view of a specific absorption rate value 811 of a frequency of a resource block of an electronic device 101).

[0094] According to an embodiment, when the electronic device 101 is allocated a resource block with a high frequency within the frequency band 410, the SAR value 811 may increase due to physical properties. As the SAR value 811 increases, the power limit value may decrease. Therefore, when the electronic device 101 is allocated a resource block with a low frequency, the power limit value increases so that the SAR standard can be met even when a higher intensity RF signal is transmitted. When the electronic device 101 is allocated a resource block with a low frequency, the amount of power sent by the communication circuit 220 to the antenna 230 under the condition of meeting the specific absorption rate standard can be increased.

[0095] The processor of the electronic device 101 (eg, Figure 2 The communication processor 210 in the electronic device 101 may map the highest frequency of the resource block to which the electronic device 101 is allocated to the interpolation data (eg, Figures 4 to 7 The processor 210 may use the final power limit to control the amount of power sent by the communication circuit 220 to the antenna 230. The final power limit may have a value higher than the highest power limit of the frequency band 410 (e.g., Figure 4Processor 210 may increase the amount of power sent by communication circuit 220 to antenna 230 while meeting SAR standards by controlling the amount of power sent by communication circuit 220 to antenna 230 using the final power limit.

[0096] Fig. 9 is a diagram showing a method of connecting to an electronic device (eg, Figure 1 An antenna (eg, Figure 2 An amplifier of the antenna 230 in FIG. 2 generates a view of interpolated data 913 when the amplifier has different gain values ​​depending on the frequency.

[0097] An amplifier may be connected to the antenna 230. The amplifier may include an amplifier circuit (e.g., at least one power amplifier) ​​that amplifies the signal strength. The amplifier connected to the antenna 230 may have a gain value (e.g., the gain of at least one power amplifier) ​​that varies depending on a change in frequency. For example, the amplifier connected to the antenna 230 may have a gain value that decreases as the frequency within the frequency band 410 increases, and then increases after the frequency corresponding to the inflection point 911. When the gain value of the amplifier connected to the antenna 230 decreases, the strength of the RF signal sent from the antenna 230 may also decrease even when the amount of power sent to the antenna 230 by the communication circuit 220 remains the same. Therefore, when the gain value of the amplifier connected to the antenna 230 decreases, the power limit value may increase. Conversely, when the gain value of the amplifier connected to the antenna 230 increases, the strength of the RF signal sent from the antenna 230 may also increase even when the amount of power sent to the antenna 230 by the communication circuit 220 remains the same. Therefore, when the gain value of the amplifier connected to the antenna 230 increases, the power limit value may decrease. As a result, when the gain value of the amplifier connected to the antenna 230 decreases as the frequency within the frequency band 410 increases, and then the gain value of the amplifier connected to the antenna 230 increases after the frequency corresponding to the inflection point 911, the power limit value can increase as the frequency within the frequency band 410 increases, and then the power limit value can decrease after the frequency corresponding to the inflection point 911.

[0098] The processor of the electronic device 101 (eg, Figure 2The communication processor 210 in the embodiment of the present invention may measure an intermediate power limit value 912, which is a power limit value at an inflection point 911 at which a change trend of a gain value of an amplifier connected to the antenna 230 changes. The processor 210 may interpolate at least two power limit values ​​421 and 422 and the intermediate power limit value 912 to generate interpolation data 913. The processor 210 may generate the interpolation data 913 in which the frequency characteristics of the antenna 230 are reflected. The processor 210 may map the highest frequency of the allocated resource block to the interpolation data 913 reflecting the frequency characteristics of the antenna 230 to calculate a final power limit value suitable for the frequency characteristics of the antenna 230. The processor 210 may control the amount of power transmitted by the communication circuit 220 to the antenna 230 using the final power limit value suitable for the frequency characteristics of the antenna 230. Processor 210 may control the amount of power transmitted by communication circuit 220 to antenna 230 by using a final power limit value suitable for the frequency characteristics of antenna 230, thereby increasing the amount of power transmitted by communication circuit 220 to antenna 230 while satisfying the SAR standard.

[0099] Fig.10 is a diagram showing a method of connecting to an electronic device (eg, Figure 1 An antenna (eg, Figure 2 An amplifier of the antenna 230 in FIG. 1 generates a view of the interpolated data 1013 when the amplifier has different gain values ​​depending on the frequency.

[0100] The amplifier connected to the antenna 230 may have a gain value that changes depending on a change in frequency. For example, the amplifier connected to the antenna 230 may have a gain value that increases as the frequency within the frequency band 410 increases, and then decreases after the frequency corresponding to the inflection point 1011. When the gain value of the amplifier connected to the antenna 230 increases as the frequency within the frequency band 410 increases, and then the gain value of the amplifier connected to the antenna 230 decreases after the frequency corresponding to the inflection point 1011, the power limit value may decrease as the frequency within the frequency band 410 increases, and then the power limit value may increase after the frequency corresponding to the inflection point 1011.

[0101] The processor of the electronic device 101 (eg, Figure 2The communication processor 210 in the electronic device 101 may measure an intermediate power limit value 1012, which is a power limit value at an inflection point 1011 at which a change trend of a gain value of an amplifier connected to the antenna 230 changes. The processor 210 may interpolate at least two power limit values ​​421 and 422 and the intermediate power limit value 1012 to generate interpolation data 1013. The processor 210 may generate the interpolation data 1013 in which the frequency characteristics of the antenna 230 are reflected. The processor 210 may map the highest frequency of the resource block allocated to the electronic device 101 to the interpolation data 1013 reflecting the frequency characteristics of the antenna 230 to calculate a final power limit value suitable for the frequency characteristics of the antenna 230. The processor 210 may control the amount of power transmitted by the communication circuit 220 to the antenna 230 using the final power limit value suitable for the frequency characteristics of the antenna 230. Processor 210 may control the amount of power transmitted by communication circuit 220 to antenna 230 by using a final power limit value suitable for the frequency characteristics of antenna 230, thereby increasing the amount of power transmitted by communication circuit 220 to antenna 230 while satisfying the SAR standard.

[0102] Fig.11 is a diagram showing a method of performing a process ... Figure 1 Flowchart 1100 of a method for controlling transmission power of wireless communication performed by an electronic device 101 in FIG.

[0103] In operation 1110, the manufacturer of the electronic device 101 may store the Figure 2 The interpolation data related to the power limit value according to the frequency is stored in the memory 130 in the electronic device 101. For example, the manufacturer of the electronic device 101 may store the interpolation data generated by interpolating at least two power limit values ​​in the memory 130 when the electronic device 101 is shipped.

[0104] The power limit value may represent a maximum transmission power value of the communication circuit 220, which is set to be transmitted through the antenna (eg, Figure 2 The specific absorption rate (SAR) of the RF signal output by the antenna 230 in the antenna 230 is maintained below the specified specific absorption rate standard. The power limit value may vary depending on the frequency. Since the SAR increases with increasing frequency due to physical properties, the power limit value may decrease with increasing frequency.

[0105] At least two power limits may be set to meet the specific absorption rate standard at a frequency corresponding to at least one resource block. At least two power limits may be obtained by measuring the power limits at at least two frequencies belonging to the frequency band. At least two power limits may be a minimum power limit and a maximum power limit, the minimum power limit being the power limit of the minimum resource block of the frequency band, and the maximum power limit being the power limit of the maximum resource block of the frequency band. The minimum resource block of the frequency band may be a resource block with the lowest frequency among multiple resource blocks belonging to the frequency band. The maximum resource block of the frequency band may be a resource block with the highest frequency among multiple resource blocks belonging to the frequency band. For example, when there are 50 resource blocks in the B1 frequency band, the minimum resource block in the B1 frequency band may be 0RB, which has the lowest frequency among the 50 resource blocks, and the maximum resource block may be 49RB, which has the highest frequency among the 50 resource blocks.

[0106] The manufacturer of the electronic device 101 may perform an operation of calculating a value between two values ​​by connecting the two values ​​with a straight line, so as to perform an operation of interpolating the two values. The manufacturer of the electronic device 101 may calculate the power limit between the two power limit values ​​by connecting the two power limit values ​​with a straight line, so as to interpolate the two power limit values. Therefore, the manufacturer of the electronic device 101 may calculate the power limit in the frequency range between the frequency values ​​corresponding to the two power limit values, respectively. For example, the manufacturer of the electronic device 101 may calculate the power limit corresponding to the frequency value belonging to the entire frequency band when the lowest power limit value and the highest power limit value are interpolated. The manufacturer of the electronic device 101 may generate data in the form of a straight line graph on the frequency axis using the power limit value obtained as a result of interpolating the two power limit values. The data in the form of a straight line graph generated by the manufacturer of the electronic device 101 may be defined as interpolation data. The manufacturer of the electronic device 101 may store the interpolation data in the memory 130.

[0107] In operation 1120, the processor (eg, Figure 2 The communication processor 210 in the embodiment may receive radio resource information related to frequency band information, bandwidth information and at least one resource block. For example, the electronic device 101 may receive radio resource information related to frequency band information, bandwidth information and at least one resource block from a base station (e.g., Figure 2 The frequency band information, bandwidth information and radio resource information can be obtained or identified from the information of the base station of the cellular network 240 in the network.

[0108] The frequency band information may be a communication circuit with the electronic device 101 (eg, Figure 2The communication circuit 220 in the communication circuit 220) may be used for wireless communication. The frequency band may be, for example, a frequency range specified by the third generation partnership project (3GPP) standard. For example, based on the frequency division duplex (FDD) mode, the frequency band used for LTE communication may include B1 to B32, B65 to B76, and B85 to B88 frequency bands. The electronic device 101 may obtain the frequency band information during the process of searching for a cell to which the electronic device 101 is connected or connecting (e.g., attaching) to a cell. The memory (e.g., Figure 2 The memory 130 in the memory 130 may store information about frequency bands (eg, information about frequency bands associated with a country, a mobile network operation, and / or a radio access technology (RAT)).

[0109] The bandwidth information may be information associated with a frequency bandwidth of a cell connected by a base station to the electronic device 101. For example, the electronic device 101 may obtain the bandwidth information by receiving system information from the cell.

[0110] The radio resource information may be information related to at least one resource block allocated to the electronic device 101 for wireless communication. A resource block may be a unit block that may be allocated to the electronic device 101 in terms of frequency. For example, a resource block may have a frequency bandwidth of 0.2 MHz. At least one resource block that may be used for uplink signal transmission of the electronic device 101 may be allocated from the base station to the electronic device 101. The electronic device 101 may receive information (e.g., information about the number of resource blocks and information about the starting resource block) for allocating one or more resource blocks within the frequency band from the base station. For example, a plurality of continuous resource blocks may be allocated to the electronic device 101 on the frequency axis. For example, a plurality of resource blocks spaced apart from each other on the frequency axis may be allocated to the electronic device 101. The number of at least one resource block allocated to the electronic device 101 may be variably set depending on the communication situation, the total number of terminals connected to the base station connected to the electronic device 101, and the type of data transmitted by the wireless communication performed by the electronic device 101.

[0111] The electronic device 101 can receive data from an external network (for example, Figure 2 The electronic device 101 may receive the frequency band information, bandwidth information, and radio resource information from the cellular network 240 in the wireless communication network. For example, the electronic device 101 may obtain the frequency band information, bandwidth information, and / or radio resource information through network search (e.g., cell search), connection (e.g., attachment), and / or resource allocation (e.g., uplink grant).

[0112] At operation 1130, the processor 210 of the electronic device 101 may calculate a highest frequency value of at least one resource block. The processor 210 may calculate the highest frequency value of at least one resource block allocated to the electronic device 101 by adding the frequency range of the at least one resource block to the starting frequency of the at least one resource block allocated to the electronic device 101. For example, when the frequency range of one resource block is 0.2 MHz, the processor 210 may obtain the highest frequency value of at least one resource block allocated to the electronic device 101 by adding a value obtained by multiplying the number of allocated resource blocks by 0.2 MHz to the starting frequency of the at least one resource block allocated to the electronic device 101.

[0113] In operation 1140, the processor 210 of the electronic device 101 may identify the final power limit value using the mapping value of the highest frequency value to the stored interpolation data. The processor 210 may load the interpolation data stored in the memory 130. The interpolation data stored in the memory 130 may include the power limit value mapped according to the frequency. Figure 4 The method described herein generates a power limit value according to frequency mapping included in the interpolation data. The mapping value of the highest frequency value can be identified from the power limit value according to the frequency mapping. The processor 210 can use the mapping value in the loaded interpolation data to identify the final power value at the highest frequency value. The final power limit value can vary depending on the highest frequency value of at least one resource block allocated to the electronic device 101. When the highest frequency value of at least one resource block allocated to the electronic device 101 decreases, the final power limit value can increase.

[0114] At operation 1150, the processor 210 of the electronic device 101 may use the final power limit value to limit the power transmitted by the communication circuit 220 to the antenna 230. The processor 210 may limit the maximum amount of power transmitted by the communication circuit 220 to the antenna 230 to the final power limit value. When the highest frequency value is reduced, the processor 210 may increase the maximum amount of power transmitted by the communication circuit 220 to the antenna 230. When the highest frequency value is reduced as described above, the processor 210 may increase the power transmitted by the electronic device 101 through the antenna 230 within a range that satisfies the specific absorption rate standard.

[0115] The electronic device according to various embodiments may be one of various types of electronic devices. The electronic device may include, for example, a portable communication device (e.g., a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a household appliance. According to an embodiment of the present disclosure, the electronic device is not limited to the above-mentioned electronic devices.

[0116] It should be understood that the various embodiments of the present disclosure and the terms used therein are not intended to limit the technical features set forth herein to specific embodiments, and include various changes, equivalents or replacements of the corresponding embodiments. With respect to the description of the accompanying drawings, similar reference numerals may be used to refer to similar or related elements. It should be understood that, unless otherwise clearly stated in the relevant context, the singular form of the noun corresponding to the project may include one or more things. As used herein, each of the phrases such as "A or B", "at least one of A and B", "at least one of A or B", "A, B or C", "at least one of A, B and C", and "at least one of A, B or C" may include any one or all possible combinations of the items listed together in the corresponding phrase in the phrase. As used herein, terms such as "1st" and "2nd" or "first" and "second" may be used to simply distinguish the corresponding component from another component, and do not limit the component in other aspects (e.g., importance or order). It should be understood that if an element (e.g., a first element) is referred to as being “coupled”, “coupled to”, “connected to”, or “connected to” another element (e.g., the second element) with or without the term “operably” or “communicatively”, it means that the element can be coupled to the other element directly (e.g., wired), wirelessly, or via a third element.

[0117] As used in conjunction with various embodiments of the present disclosure, the term "module" may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with other terms (e.g., "logic," "logic block," "portion," or "circuit"). A module may be a single integrated component or its smallest unit or portion suitable for performing one or more functions. For example, according to an embodiment, a module may be implemented in the form of an application specific integrated circuit (ASIC).

[0118] Various embodiments as described herein may be implemented as software (e.g., program 140) including one or more instructions stored in a storage medium (e.g., internal memory 136 or external memory 138) readable by a machine (e.g., electronic device 101). For example, a processor (e.g., processor 120) of a machine (e.g., electronic device 101) may call at least one of the one or more instructions stored in the storage medium and execute it with or without one or more other components under the control of the processor. This allows the machine to be operated to perform at least one function according to at least one instruction called. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Among them, the term "non-transitory" simply means that the storage medium is a tangible device and does not include signals (e.g., electromagnetic waves), but the term does not distinguish between a case where data is semi-permanently stored in a storage medium and a case where data is temporarily stored in a storage medium.

[0119] According to an embodiment, the method according to various embodiments of the present disclosure may be included and provided in a computer program product. The computer program product may be traded between a seller and a buyer as a product. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., a compact disc read-only memory (CD-ROM)), or via an application store (e.g., a Play Store). TM ) online distribution (e.g., download or upload), or directly between two user devices (e.g., smartphones). If distributed online, at least a portion of the computer program product may be temporarily generated or at least temporarily stored in a machine-readable storage medium, such as a memory of a manufacturer's server, an application store's server, or a relay server.

[0120] According to various embodiments, each of the above-mentioned components (e.g., a module or a program) may include a single entity or multiple entities, and some of the multiple entities may be separately arranged in different components. According to various embodiments, one or more of the above-mentioned components may be omitted, or one or more other components may be added. Alternatively or additionally, multiple components (e.g., modules or programs) may be integrated into a single component. In this case, according to various embodiments, the integrated component may still execute them in the same or similar manner as one or more functions of each of the multiple components are executed by a corresponding one of the multiple components before integration. According to various embodiments, the operations performed by a module, a program or another component may be performed sequentially, in parallel, repeatedly or heuristically, or one or more of the operations may be performed or omitted in a different order, or one or more other operations may be added.

Claims

1. An electronic device, comprising: Antenna (230); A communication circuit (220) electrically connected to the antenna (230); a memory (130) storing interpolation data (415) associated with power limits according to frequency; and A processor (210), electrically connected to the communication circuit (220), Wherein, the processor (210) is configured to: receiving frequency band information associated with a frequency band (410) for wireless communication, bandwidth information associated with a frequency bandwidth, and radio resource information related to at least one resource block (RB) (511) from an external network (240); identifying a highest frequency value (512) of the at least one resource block (511); identifying a final power limit value (521) using a value obtained by mapping the highest frequency value (512) to the interpolated data (415) stored in the memory (130); and using the final power limit value (521) to control the transmission power used in the communication circuit (220) and the antenna (230), and The interpolation data (415) is generated based on the interpolation of at least two power limit values ​​(421, 422) corresponding to the frequency band (410).

2. The electronic device according to claim 1, wherein: The final power limit value (521) is set to meet the Specific Absorption Rate (SAR) standard at the highest frequency value (512).

3. The electronic device according to claim 1, wherein: The interpolation data (415) is generated by interpolating the at least two power limit values ​​of the frequency band (410) on a frequency axis.

4. The electronic device according to claim 3, wherein: The processor (210) is configured to: measuring a minimum power limit value (421) and a maximum power limit value (422), wherein the minimum power limit value (421) is a power limit value of a resource block (411) of the lowest frequency of the frequency band (410), and the maximum power limit value (422) is a power limit value of a resource block (413) of the highest frequency of the frequency band (410); and The lowest power limit value (421) and the highest power value (422) are interpolated to generate the interpolated data (415).

5. The electronic device according to claim 1, wherein: The processor (210) is configured to, when at least one resource block (611, 612, 613, 614, 615) is continuously allocated on the frequency axis of the frequency band (410), map the highest frequency value (616) corresponding to the highest frequency resource block (615) among the at least one resource block (611, 612, 613, 614, 615) to the interpolation data (415).

6. The electronic device according to claim 1, wherein: The at least one resource block (711, 713) includes a first resource block (711) and a second resource block (713) spaced apart on a frequency axis of the frequency band (410), and The processor (210) is configured to map a first frequency value (712) being a highest frequency value of the first resource block (711) and a second frequency value (714) being a highest frequency value of the second resource block (713) to the interpolation data (415).

7. The electronic device of claim 1, further comprising an amplifier connected to the antenna (230), in, The interpolation data is generated by interpolating the intermediate power limit value (912, 1012) at the inflection point (911, 1011) and the at least two power limit values ​​(421, 422), where the gain value changes according to the change trend of the frequency of the amplifier.

8. The electronic device according to claim 1, wherein: The processor 210 is configured to identify the highest frequency value (512, 616) based on a starting frequency of the at least one resource block (511) and a number of at least one allocated resource block (511).

9. A method for controlling an electronic device (101), the method comprising: receiving frequency band information associated with a frequency band (410) used for wireless communication of the electronic device (101), bandwidth information associated with a frequency bandwidth, and radio resource information related to at least one resource block RB (511) from an external network (240); identifying a highest frequency value (512) of the at least one resource block (511); identifying a final power limit value (521) using a value obtained by mapping the highest frequency value (512) to interpolation data (415) stored in a memory (130) of the electronic device (101); and using the final power limit value (521) to control the power of the transmission signal, The interpolation data (415) is generated based on the interpolation of at least two power limit values ​​(421, 422) corresponding to the frequency band (410).

10. The method according to claim 9, wherein: The final power limit value (521) is set to meet the Specific Absorption Rate (SAR) standard at the highest frequency value (512).

11. The method according to claim 9, wherein: The interpolation data (415) is generated by interpolating a minimum power limit value (421) and a maximum power limit value (422), wherein the minimum power limit value (421) is a power limit value of a resource block (411) with the lowest frequency in the frequency band (410), and the maximum power limit value (422) is a power limit value of a resource block (413) with the highest frequency in the frequency band (410).

12. The method according to claim 9, wherein: Mapping the highest frequency value (512) includes, when at least one resource block (611, 612, 613, 614, 615) is continuously allocated on the frequency axis of the frequency band (410), mapping the highest frequency value (616) corresponding to the highest frequency resource block (615) among the at least one resource block (611, 612, 613, 614, 615) to the interpolation data (415).

13. The method according to claim 9, wherein: The at least one resource block (711, 713) includes a first resource block (711) and a second resource block (713) spaced apart on a frequency axis of the frequency band (410), and Mapping the highest frequency value (512) includes mapping a first frequency value (712) being the highest frequency value of the first resource block (711) and a second frequency value (714) being the highest frequency value of the second resource block (713) to the interpolation data (415).

14. The method according to claim 9, wherein: The interpolation data (415) is generated by interpolating the intermediate power limit value (912, 1012) at the inflection point (911, 1011) and the at least two power limit values ​​(421, 422), where the gain value changes according to the change trend of the frequency of the amplifier connected to the antenna of the electronic device.

15. The method according to claim 9, wherein: Identifying the final power limit value (512) includes identifying the highest frequency value (512, 616) based on a starting frequency of the at least one resource block (511) and a number of at least one allocated resource block (511).

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