KR20240047268A - Electronic device performing back off based on sar and method for operating thereof - Google Patents

Abstract

In the electronic device of the present disclosure, based on confirmation that Wi-Fi communication is not performed, allocating the entire SAR margin allocated to the electronic device during a first period to cellular communication and performing the Wi-Fi communication, Based on confirmation that the value of the accumulated SAR consumed by performing the Wi-Fi communication is less than or equal to a threshold, a first amount of the SAR margin allocated during the first period is allocated to the Wi-Fi communication, and the first amount is Allocating the remainder except for the cellular communication, performing the Wi-Fi communication, and allocating during the first period based on confirming that the value of the accumulated SAR consumed by performing the Wi-Fi communication is greater than the threshold. We propose a method and apparatus for allocating a second amount greater than the first amount among the SAR margins to the Wi-Fi communication, and allocating the remainder excluding the second amount to the cellular communication. Various other embodiments are possible. .

Description

Electronic device and operating method for performing back-off based on SAR {ELECTRONIC DEVICE PERFORMING BACK OFF BASED ON SAR AND METHOD FOR OPERATING THEREOF}

An embodiment of the present disclosure relates to an electronic device that performs maximum transmission power limit (MTPL) or back-off of transmission power based on specific absorption rate (SAR) and a method of operating the same. .

Electronic devices that support both cellular communication and IEEE 802.11-based communication (hereinafter referred to as Wi-Fi communication) are being actively distributed. The electronic device may transmit a transmission RF signal based on cellular communication and may transmit a transmission RF signal based on Wi-Fi communication. If the distance between the antenna to which the transmitted RF signal based on cellular communication is applied and the antenna to which the transmitted RF signal based on Wi-Fi communication is applied is less than a certain distance, the sum of SARs corresponding to both transmitted RF signals may satisfy the SAR-related regulations. There is a need. Electromagnetic waves corresponding to transmitted RF signals based on cellular communication and electromagnetic waves corresponding to transmitted RF signals based on Wi-Fi communication and/or Bluetooth may be radiated simultaneously from each of the antennas or may be radiated with a time difference. Accordingly, the SAR corresponding to the transmitted RF signal based on cellular communication and the SAR corresponding to the transmitted RF signal based on Wi-Fi communication need to satisfy the regulations of time average SAR (time average SAR). In order for the transmission power of an RF signal corresponding to a specific type of communication to have a certain value or more, a SAR margin of a certain value or more needs to be allocated to the corresponding communication. For example, for an electronic device that supports both cellular communication and Wi-Fi communication, when both cellular communication and Wi-Fi communication are activated, a SAR margin of a certain value or more needs to be allocated to both communications. For example, the maximum SAR value assigned for a certain time window corresponding to the electronic device needs to be distributed appropriately for both communications.

An electronic device according to an embodiment of the present disclosure includes a Wi-Fi module for Wi-Fi communication and at least one communication processor for cellular communication, wherein the at least one communication processor is configured to operate when the Wi-Fi module is turned off. Based on the status being confirmed, the entire SAR margin allocated to the electronic device during the first period may be set to be allocated to the at least one cellular communication.

In the electronic device according to an embodiment of the present disclosure, based on the fact that the Wi-Fi module is in an on state and the value of accumulated SAR consumed by the Wi-Fi module is confirmed to be less than or equal to a threshold, It may be set to allocate a first amount of the SAR margin to the Wi-Fi communication, and allocate the remainder excluding the first amount to the at least one cellular communication.

In the electronic device according to an embodiment of the present disclosure, based on the fact that the Wi-Fi module is in an on state and the value of accumulated SAR consumed by the Wi-Fi module is confirmed to be greater than the threshold, during the first period An electronic device may be proposed that allocates a second amount greater than the first amount among the allocated SAR margins to the Wi-Fi communication, and allocates the remainder excluding the second amount to the at least one cellular communication.

In a method of an electronic device performing Wi-Fi communication and cellular communication according to an embodiment of the present disclosure, based on confirmation that Wi-Fi communication is not performed, the entire SAR margin allocated to the electronic device during the first period An operation of allocating to cellular communication can be performed.

In the method of an electronic device according to an embodiment of the present disclosure, performing the Wi-Fi communication, based on confirming that the value of accumulated SAR consumed by performing the Wi-Fi communication is less than or equal to a threshold value, during the first period A first amount of the allocated SAR margin may be allocated to the Wi-Fi communication, and the remainder excluding the first amount may be allocated to the cellular communication.

In a method of an electronic device according to an embodiment of the present disclosure, performing the Wi-Fi communication, and based on confirming that the value of accumulated SAR consumed by performing the Wi-Fi communication is greater than the threshold, the first It may include the operation of allocating a second amount greater than the first amount among the SAR margins allocated for a period to the Wi-Fi communication, and allocating the remainder excluding the second amount to the cellular communication.

1 is a block diagram of an electronic device in a network environment, according to various embodiments.
FIG. 2A is a block diagram of an electronic device for supporting legacy network communication and 5G network communication, according to various embodiments.
FIG. 2B is a block diagram of an electronic device for supporting legacy network communication and 5G network communication, according to various embodiments.
FIG. 3A shows a flowchart for explaining a method of operating an electronic device according to various embodiments.
FIG. 3B is a diagram for explaining transmission power and SAR over time according to various embodiments.
4A to 4C show graphs of transmission power over time according to various embodiments.
4D to 4E show tables of transmission power by time according to various embodiments.
FIG. 5A is a block diagram of an electronic device including a Wi-Fi module, according to an embodiment of the present disclosure.
FIG. 5B is a flowchart for explaining the operation of a Wi-Fi module and a communication processor according to an embodiment of the present disclosure.
FIG. 5C is a flowchart for explaining the operation of another Wi-Fi module and communication processor according to an embodiment of the present disclosure.
Figure 5d shows the SAR used by Wi-Fi during RACH operation according to a comparative example for comparison with the embodiment of the present disclosure.
Figure 5e shows the size of the SAR margin for each communication, according to an embodiment of the present disclosure.
FIG. 6A illustrates an operation of allocating the size of the SAR margin of Wi-Fi communication, according to an embodiment of the present disclosure.
FIG. 6B is a flowchart explaining a method of operating an electronic device according to an embodiment.
Figure 7 shows cumulative SAR according to the allocated SAR margin of Wi-Fi communication, according to an embodiment of the present disclosure.
FIG. 8 illustrates the cumulative SAR of cellular communication according to a change in the SAR margin of Wi-Fi communication, according to an embodiment of the present disclosure.
FIG. 9 illustrates the cumulative SAR of cellular communication according to a change in the SAR margin of Wi-Fi communication, according to an embodiment of the present disclosure.
FIG. 10 illustrates the cumulative SAR of cellular communication according to a change in the SAR margin of Wi-Fi communication, according to an embodiment of the present disclosure.
FIG. 11 illustrates an operation of allocating the size of a SAR margin during a voice call operation in Wi-Fi communication, according to an embodiment of the present disclosure.
Figure 12 shows accumulated SAR during voice call operation in Wi-Fi communication, according to an embodiment of the present disclosure.
FIG. 13 illustrates an operation of allocating the size of a SAR margin during a voice call operation in cellular communication during a Wi-Fi connection, according to an embodiment of the present disclosure.
Figure 14 shows the accumulated SAR during a voice call operation of cellular communication during a Wi-Fi connection, according to an embodiment of the present disclosure.
Figure 15a shows cumulative SAR when the Wi-Fi SAR margin increases step by step, according to an embodiment of the present disclosure.
Figure 15b shows the cumulative SAR of cellular communication when the Wi-Fi SAR margin increases step by step, according to an embodiment of the present disclosure.
Figure 16 shows the SAR usage of each communication when sharing the SAR margin between Wi-Fi communication and cellular communication on the same time scale, according to an embodiment of the present disclosure.
FIG. 17 illustrates the SAR usage of each communication when sharing the SAR margin between Wi-Fi communication and cellular communication on a different time scale, according to an embodiment of the present disclosure.
FIG. 18 is a flowchart explaining a method of operating an electronic device according to an embodiment.
Figure 19 shows a flowchart for explaining a method of operating an electronic device according to an embodiment.
FIG. 20A shows a flowchart explaining a method of operating an electronic device according to an embodiment.
Figure 20b shows SAR generated based on Bluetooth communication.

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 commands or data received from another component (e.g., sensor module 176 or communication module 190) in volatile memory 132. The commands or data stored in the volatile memory 132 can be processed, and the resulting data can be stored in the non-volatile memory 134. According to one embodiment, the processor 120 includes a 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 unit) may include a hardware structure specialized for processing artificial intelligence models. Artificial intelligence models can be created through machine learning. For example, such learning may be performed in the electronic device 101 itself, where artificial intelligence is performed, or may be performed through a separate server (e.g., server 108). Learning algorithms may include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but It is not limited. An artificial intelligence model may include multiple artificial neural network layers. Artificial neural networks include deep neural network (DNN), convolutional neural network (CNN), recurrent neural network (RNN), restricted boltzmann machine (RBM), belief deep network (DBN), bidirectional recurrent deep neural network (BRDNN), It may be one of deep Q-networks or a combination of two or more of the above, but is not limited to the examples described above. In addition to hardware structures, artificial intelligence models may additionally or alternatively include software structures.

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

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

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

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

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

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

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

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

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

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

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

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

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

Communication module 190 is configured to provide a direct (e.g., wired) communication channel or wireless communication channel between electronic device 101 and an external electronic device (e.g., electronic device 102, electronic device 104, or server 108). It can support establishment and communication through established communication channels. Communication module 190 operates independently of processor 120 (e.g., an application processor) and may include one or more communication processors that support direct (e.g., wired) communication or wireless communication. According to one embodiment, the communication module 190 is a wireless communication module 192 (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 194 (e.g., : LAN (local area network) communication module, or power line communication module) may be included. Among these communication modules, the corresponding communication module is a first network 198 (e.g., a short-range communication network such as Bluetooth, 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 created on a substrate (eg, PCB). According to one embodiment, the antenna module 197 may include a plurality of antennas (eg, an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network such as the first network 198 or the second network 199 is connected to the plurality of antennas by, for example, the communication module 190. can be selected Signals or power may be transmitted or received between the communication module 190 and an external electronic device through the at least one selected antenna. According to some embodiments, in addition to the radiator, other components (eg, radio frequency integrated circuit (RFIC)) may be additionally produced as part of the antenna module 197.

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

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

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

FIG. 2A is a block diagram 200 of an electronic device 101 for supporting legacy network communication and 5G network communication, according to various embodiments. Referring to FIG. 2A, the electronic device 101 includes a first communication processor 212, a second communication processor 214, a first radio frequency integrated circuit (RFIC) 222, a second RFIC 224, and a third RFIC (226), fourth RFIC (228), first radio frequency front end (RFFE) (232), second RFFE (234), first antenna module (242), second antenna module (244), third It may include an antenna module 246 and antennas 248. The electronic device 101 may further include a processor 120 and a memory 130. The second network 199 may include a first cellular network 292 and a second cellular network 294. According to another embodiment, the electronic device 101 may further include at least one of the components shown in FIG. 1, and the second network 199 may further include at least one other network. According to one embodiment, the first communication processor 212, the second communication processor 214, the first RFIC 222, the second RFIC 224, the fourth RFIC 228, the first RFFE 232, and second RFFE 234 may form at least a portion of wireless communication module 192. According to another embodiment, the fourth RFIC 228 may be omitted or may be included as part of the third RFIC 226.

The first communication processor 212 may support establishment of a communication channel in a band to be used for wireless communication with the first cellular network 292, and legacy network communication through the established communication channel. According to various embodiments, the first cellular network may be a legacy network including a second generation (2G), 3G, 4G, or long term evolution (LTE) network. The second communication processor 214 establishes a communication channel corresponding to a designated band (e.g., about 6 GHz to about 60 GHz) among the bands to be used for wireless communication with the second cellular network 294, and establishes a 5G network through the established communication channel. Can support communication. According to various embodiments, the second cellular network 294 may be a 5G network defined by 3GPP. Additionally, according to one embodiment, the first communication processor 212 or the second communication processor 214 corresponds to another designated band (e.g., about 6 GHz or less) among the bands to be used for wireless communication with the second cellular network 294. It can support the establishment of a communication channel and 5G network communication through the established communication channel.

The first communication processor 212 can transmit and receive data with the second communication processor 214. For example, data that was classified as being transmitted over the second cellular network 294 may be changed to being transmitted over the first cellular network 292. In this case, the first communication processor 212 may receive transmission data from the second communication processor 214. For example, the first communication processor 212 may transmit and receive data with the second communication processor 214 through the inter-processor interface 213. The inter-processor interface 213 may be implemented, for example, as a universal asynchronous receiver/transmitter (UART) (e.g., high speed-UART (HS-UART) or peripheral component interconnect bus express (PCIe) interface, but the type There is no limitation. Alternatively, the first communication processor 212 and the second communication processor 214 may exchange control information and packet data information using, for example, shared memory. The communication processor 212 may transmit and receive various information such as sensing information, information on output intensity, and resource block (RB) allocation information with the second communication processor 214.

Depending on the implementation, the first communication processor 212 may not be directly connected to the second communication processor 214. In this case, the first communication processor 212 may transmit and receive data through the second communication processor 214 and the processor 120 (eg, application processor). For example, the first communication processor 212 and the second communication processor 214 may transmit and receive data with the processor 120 (e.g., application processor) through an HS-UART interface or a PCIe interface, but the interface's There is no limit to the type. Alternatively, the first communication processor 212 and the second communication processor 214 may exchange control information and packet data information using the processor 120 (e.g., application processor) and shared memory. .

According to one embodiment, the first communication processor 212 and the second communication processor 214 may be implemented in a single chip or a single package. According to various embodiments, the first communication processor 212 or the second communication processor 214 may be formed within a single chip or a single package with the processor 120, the auxiliary processor 123, or the communication module 190. there is. For example, as shown in FIG. 2B, the communication processor 440 may support both functions for communication with the first cellular network 292 and the second cellular network 294.

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

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

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

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

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

According to one embodiment, the third RFIC 226 and the antenna 248 may be disposed on the same substrate to form the third antenna module 246. For example, the wireless communication module 192 or the processor 120 may be disposed on the first substrate (eg, main PCB). In this case, the third RFIC 226 is located in some area (e.g., bottom surface) of the second substrate (e.g., sub PCB) separate from the first substrate, and the antenna 248 is located in another part (e.g., top surface). is disposed, so that the third antenna module 246 can be formed. By placing the third RFIC 226 and the antenna 248 on the same substrate, it is possible to reduce the length of the transmission line therebetween. This, for example, can reduce the loss (e.g. attenuation) of signals in the high frequency band (e.g., about 6 GHz to about 60 GHz) used in 5G network communication by transmission lines. Because of this, the electronic device 101 can improve the quality or speed of communication with the second network 294 (eg, 5G network).

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

The second cellular network 294 (e.g., 5G network) may operate independently (e.g., stand-alone (SA)) or connected to the first cellular network 292 (e.g., legacy network) ( Example: NSA (Non-Stand Alone). For example, a 5G network may have only an access network (e.g., 5G radio access network (RAN) or next generation RAN (NG RAN)) and no core network (e.g., next generation core (NGC)). In this case, the electronic device 101 may access the access network of the 5G network and then access an external network (eg, the Internet) under the control of the core network (eg, evolved packed core (EPC)) of the legacy network. Protocol information for communication with a legacy network (e.g., LTE protocol information) or protocol information for communication with a 5G network (e.g., New Radio (NR) protocol information) is stored in the memory 230 and stored in the memory 230, 120, first communication processor 212, or second communication processor 214).

Meanwhile, the communication processor (e.g., at least one of the first communication processor 212, the second communication processor 214, or the integrated communication processor 260) may be implemented as an integrated circuit, In this case, it may include at least one storage circuit that stores at least one instruction that causes operation to be performed according to various embodiments, and at least one processing circuit that executes the at least one instruction.

FIG. 3A shows a flowchart for explaining a method of operating an electronic device according to various embodiments. The embodiment of FIG. 3A will be described with reference to FIG. 3B and FIGS. 4A to 4E. FIG. 3B is a diagram for explaining transmission power and SAR over time according to various embodiments. 4A to 4C show graphs of transmission power over time according to various embodiments. 4D to 4E show tables of transmission power by time according to various embodiments.

According to various embodiments, the electronic device 101 (e.g., at least one of the processor 120, the first communications processor 212, the second communications processor 214, or the integrated communications processor 260) in operation 301. Multiple tables for transmission power (or transmission size) corresponding to multiple viewpoints can be called. Before describing the embodiment related to FIG. 3A, terms such as those in Table 1 are defined.

a. Normal MAX Power: Maximum transmission power when SAR margin remains
b. Normal Max SAR: Size of SAR that occurs when operating at Normal MAX Power
c. Backoff MAX Power: Maximum transmission power when performing backoff due to insufficient SAR margin
d. Backoff Max SAR: Size of SAR that occurs when operating at Backoff Max Power
e. Measurement Time(T): Calculation of cumulative SAR, or period for calculating the average of SAR
f. Measurement Period(P): Period (or time interval) to calculate SAR
g. Number of tables for SAR calculation: T/P - 1
h. Average SAR LIMIT: Maximum value of average SAR that must not be exceeded during T
i. Average Time(A_Time): Time measured by accumulating SAR
j. Cumulative SAR: Sum of SAR accumulated during Average Time.
k. Max accumulated SAR: Average SAR LIMIT
l. Average SAR: Size of average SAR used during Average Time
m. Tx Room: Max Cumulative SAR - Cumulative SAR, SAR remaining after use
n. Remain Time(R_Time): Total measurement time - SAR measurement time to date (A_Time)

First, refer to FIGS. 4A to 4C for a description of the table. Referring first to Figure 4A, a graph is shown containing transmit power for a plurality of time points 401 to 449. Measurement time (Measurement time in Table 1), for example, the cumulative SAR during the measurement time including 50 time points (Cumulative SAR in Table 1) must be maintained below the maximum cumulative SAR (Max cumulative SAR in Table 1). can do. The electronic device 101 may, for example, store nine future SARs in addition to the accumulated SAR at the current time 449 and past arbitrary times 409 to 448 (e.g., Average Time in Table 1). The transmission power of the communication signal to be transmitted at the current time point 449 may be determined so that the accumulated SAR of the time points (not shown) (e.g., Remain Time in Table 1) is maintained below the maximum accumulated SAR. In addition, as shown in FIG. 4B, the electronic device 101 shifts the transmission powers 451 by 1 compared to the current time point 449 of FIG. 4A and any past time points 409 to 448. The transmitted transmission powers 452 can be checked. The fact that the viewpoint is shifted by 1 may mean that data from the most recent viewpoint (e.g., viewpoint 409 in FIG. 4A) is not reflected. The number of transmission powers 452 at the current time point 449 and past random times 410 to 448 is 40, which is 1 less than the number of transmission powers 451 in FIG. 4A, which is 41. You can. The electronic device 101 may determine the transmit power at the current time point 449 such that the sum of the SAR due to the transmit powers 452 and the predicted SAR at an additional 10 future times remains below the maximum cumulative SAR. . As shown in FIG. 4C, the electronic device 101 transmits the transmission powers 453 at the current time 449, which is shifted by 25 times from the transmission powers 451, and at arbitrary times 434 to 448 in the past. )can confirm. The number of transmission powers 453 is 16, which may be 25 smaller than the number of transmission powers 451, which is 41, in FIG. 4A. The electronic device 101 may determine the transmit power at the current time point 449 such that the sum of the SAR due to the transmit powers 453 and the predicted SAR at the additional 34 future times remains below the maximum cumulative SAR. . Although not shown, the electronic device 101 can manage a plurality of graphs shifted by one time point. The period for calculating SAR is the measurement period (P) in Table 1, which may be, for example, the interval between the transmission powers in FIGS. 4A to 4C. The electronic device 101 may calculate and/or manage a T/P - 1 table for a specific point in time. Hereinafter, a configuration for checking the expected SAR value will be described with reference to FIGS. 4D and 4E.

Referring to FIG. 4D, the electronic device 101 can check the kth SAR table 460. The k-th SAR table 460 includes D1, which is the accumulated SAR value 461 at at least one past point in time, the maximum SAR value 462 at the present time (D2), and the SAR expected value at at least one future point in time. (463)(D3). Referring to the graph, the accumulated value of SAR corresponding to at least one past time point 461 may be D1. D1, which is the accumulated SAR value 461 at at least one past point in time, can be confirmed based on antenna settings. The number of at least one past time point may be 1 smaller than the total number of time points (eg, 100) corresponding to the measurement time (eg, 50 seconds) in the first table. N, the total number of time points (e.g., 100), may be the result of dividing the measurement time by the sampling section (or shift section). Accordingly, in the k-th table, the number of at least one past time point may be smaller than the total number of time points by k. The electronic device 101 may check D1, which is the accumulated SAR value of N-k past times 471. The electronic device 101 may use the maximum SAR value (S1) for the current time point 472. The maximum value of SAR (S1) (e.g., normal max SAR in Table 1) may be a SAR value corresponding to the maximum transmission power (e.g., normal max power in Table 1) specified in the electronic device 101. In another embodiment, for the current time point 472, the SAR value immediately before the current time point 472 may be used. In another embodiment, for the current time point 472, the average SAR value of past time points 471 of the current time point 472 may be used. The electronic device 101 records the SAR values S2 (e.g., backoff max SAR in Table 1) for the backoff transmission power (e.g., backoff max power in Table 1) for at least one future time point 473. It can be calculated as a sum. The electronic device 101 may check D3 as the accumulated SAR for at least one future time point 473. In the kth table, the number of at least one future point in time may be k-1. Accordingly, the electronic device 101 uses the k-th table as the total SAR for N viewpoints consisting of N-k past viewpoints, 1 present viewpoint, and k-1 future viewpoints, where D1+D2+D3 is the SAR. You can check whether the maximum cumulative SAR is exceeded. If it is confirmed to be exceeded, the electronic device 101 may back off the current transmission power. Referring to FIG. 4E, the electronic device 101 can also check the k+1th table 480 as shown in FIG. 4E. The electronic device 101 includes, in the k+1th table 480, at least one accumulated SAR value 481 at a past time point is D4, D2 which is the maximum SAR value 482 at the current time point, and at least one You can check D5, which is the expected SAR value (483) at a future point in time. The electronic device 101 may check whether the accumulated SAR value of D4 + D2 + D5 exceeds the maximum accumulated SAR. The number of at least one past time point 491 in the k+1th table may be less than the number of at least one past time point 471 in the kth table by 1. The number of at least one future time point 493 in the k+1-th table may be greater than the number of at least one future time point 473 in the k-th table by 1 point 494.

According to various embodiments, in operation 303, the electronic device 101 may check the past SAR cumulative value, the SAR expected value at the current time and the future time, with respect to a plurality of tables corresponding to at least one future time. . The electronic device 101 can check the accumulated SAR values for the first table and a total of N-1 tables shifted by i time points (i is 1 or more and less than N-2) from the first table. In operation 305, the electronic device 101 may check whether a table in which the sum of the SAR cumulative value and the SAR expected value exceeds the threshold exists. If a table exceeding the threshold exists (305-Yes), in operation 307, the electronic device 101 adjusts any one of the transmission powers of at least some of the communication signals (or at least some of the maximum transmission power limit (MTPL)). You can back off. Those skilled in the art will understand that the back-off of transmit power in this document can be replaced with a back-off of the maximum transmit power limit. If there is no table exceeding the threshold (305-No), the electronic device 101 may transmit a communication signal with the set transmission power in operation 309. Backoff of the maximum value of transmission power in various embodiments of the present disclosure may mean backoff of the maximum value of transmission power.

As described above, the electronic device 101 may determine the maximum value of the transmission power so that the average size of the SAR used during the measurement time does not exceed the Average SAR limit. Alternatively, the electronic device 101 may determine the maximum value of the transmission power so that the accumulated SAR during the measurement time does not exceed the Max accumulated SAR. The electronic device 101 may determine the maximum value of maximum power for the next time period every P time. For example, the conditions for operating at normal max power during the next P time may be as follows.

Condition: Tx Room > SAR that occurs when operating at normal max power during the next P (normal max SAR in Table 1) + SAR that occurs when operating with backoff max power during (Remain Time - P) (backoff max in Table 1 SAR) = P

The Tx Room in the condition may be the value obtained by subtracting the accumulated SAR to date from the Max accumulated SAR. (Remain Time - P) in the condition may be T - average time - P, and may be, for example, the future time point described in FIGS. 4A to 4E. P may refer to the current point in time. Average time may refer to a point in the past. Satisfying the condition may mean that even if the electronic device 101 sets the maximum transmission power of normal max power during P time, there is no table in which the accumulated SAR exceeds the Max accumulated SAR. The fact that the condition is not satisfied may mean that if the electronic device 101 sets the maximum transmission power of normal max power during P time, there is a possibility that there is a table in which the accumulated SAR exceeds the Max accumulated SAR. In this case, , the electronic device 101 may set the backoff max power to the maximum transmission power during P time.

Table 2 is an example of variables and conditions.

[Example of variable setting]
i. Normal MAX Power: 23dBm
ii. Backoff MAX Power: 20dBm
iii. Measurement Time(T): 100 seconds
iv. Measurement Period(P): 0.5 seconds
v. Number of SAR Calculator tables: 199
vi. Average SAR LIMIT: 1.5mW/g
vii. Max cumulative SAR: 150mW/g
viii. When Normal Max SAR => 23dBm, SAR: 2mW/g
ix. When Backoff Max SAR => 20dBm, SAR: 1mW/g [The point at which the maximum power switches from normal max power to backoff max power] Average time X normal max power + (100 - average time) + (100 - average time)
<=> Average time <=50

In the example in Table 2, it is explained that continuous use of normal max power is possible with the maximum transmission power for 50 seconds, and that backoff to backoff max power is required after 50 seconds. For example, transmit an RF signal at 23dBm, normal max power, for 50 seconds, transmit RF signal at 23dBm, normal max power, for the next P (0.5 second), and backoff for 49.5 seconds (Remain time - P). Assume that the RF signal is transmitted at max power of 20dBm. In this case, the Tx Room may be 50mW/g, which is 150mW/g - 50 The SAR generation during P time may be 1 mW/g, which is 2 mW/g x 0.5 seconds. The SAR generation of (Remain time - P) can be 49.5 mW/g, which is 49.5 seconds x 1 mW/g. At this time, it can be confirmed that the cumulative SAR during P and (Remain time - P) exceeds the Tx room by 50.5 mW/g, which ultimately requires backoff of the maximum value of the transmission power at time P. The above-described example will be explained with reference to FIG. 3B, which explains the transmission power associated with one RAT. For example, referring to FIG. 3B, the maximum transmission power may be set to normal max power (351) up to A second (e.g., 50 seconds), but after A second, the maximum transmission power may be set to backoff max power (352). You can confirm that it is backoff. According to the backoff of the maximum value of the maximum transmission power, the slope of the second part 362 of the accumulated SAR may be formed to be smaller than the slope of the first part 361 of the accumulated SAR. The average SAR (331) before A second exceeds the average SAR limit (340), but depending on the backoff, it can be seen that at 100 seconds, the average SAR (332) is the same as the average SAR limit (340). . Meanwhile, 100 seconds here is an example and may be, for example, the length of a time window corresponding to a frequency band of 3 GHz or less. Depending on implementation, the length of the time window for each frequency band may be set differently. For example, in FR1 above 3 GHz, the time window may be set to 60 seconds, and in FR2, the time window may be set to 6 seconds, but this is an example. Meanwhile, as will be described later, a case may occur where the electronic device 101 transmits RF signals for two or more RATs. For example, the electronic device 101 may transmit a first RF signal based on E-UTRA and a second RF signal based on NR according to EN-DC. In this case, the electronic device 101 may backoff the maximum value of the transmission power of the RF signal so that the accumulated SAR does not exceed the accumulated max SAR. The electronic device 101 can set the priority of the RAT to be backoff. For example, the electronic device 101 may be set to preferentially backoff the transmission power of the RF signal based on NR, which is a RAT corresponding to the SCG, rather than E-UTRA, which is a RAT corresponding to the MCG. Meanwhile, EN-DC is an example, and if NE-DC, the electronic device 101 may be set to preferentially backoff the maximum value of the transmission power of the RF signal based on E-UTRA. In DC, preferentially backing off the maximum value of the transmission power of the RF signal based on the SCG is also an example, and there is no limitation on the priority of the backoff.

FIG. 5A is a block diagram of an electronic device including a Wi-Fi module, according to an embodiment of the present disclosure.

Referring to FIG. 5A, WiFi communication and cellular communication can be performed through the processor 120 and communication processor 260 connected to the WiFi module 510. Meanwhile, the communication processor 260 of FIG. 5A may be replaced with the first communication processor 212 and/or the second communication processor 214. As an example, the electronic device may operate in Time average SAR (TAS) in at least one of WiFi communication and cellular communication. As an example, for both WiFi communication and cellular communication, the maximum SAR may be assigned a fixed value. The maximum SAR may be, for example, the value of the SAR assigned for a time window of a certain length, and there is no limit to the value.

To explain the TAS operation in an electronic device according to an embodiment of the present disclosure, parameters and units as shown in Table 3 below may be exemplified. As an example, T is the time scale time at which the SAR is averaged, and may be, for example, 100 seconds (s). P is the period for calculating the average SAR, for example, it can be 0.5 seconds. As an example, the cumulative SAR limit may be the maximum usable SAR value for T seconds. As an example, normal max power may indicate the maximum value of transmission intensity. For example, if the Normal Max Power of an electronic device is changed to Backoff Max Power due to a lack of SAR margin, the power may be reduced as shown at 352 in FIG. 3B. As an example, referring to FIG. 3b, when changing to Backoff Max Power, the slope of the graph in which SAR is accumulated decreases and the operation can be performed so as not to exceed the accumulated SAR Limit during Average Time.

1. Parameter definition
Average Time(T): 100 seconds [Explanation: Time to average SAR]
Calculator Period(P): 0.5 seconds [Description: Period for calculating SAR]
RF exposure slot: Size of SAR and PD used during the calculator period
RF exposure amount table: Table that combines the size of SAR and PD from a second to a + Average Time. For example, when the current time is a+30 seconds, the RF exposure amount table that started at a second stores the total sum of RF exposure slots from a second to a+30 seconds.
Number of RF exposure amount tables: 199 [Description: Calculator table as many as T/P - 1]
SAR Limit: Maximum SAR value that should not be exceeded for 1 second ex) 1.6mw/g
SAR Limit Power: Tx Power corresponding to SAR Limit, ex) Tx Power exposing SAR of 1.6mW/g, 22dBm. May have different values depending on SAR Event, Tech, and Band.
Cumulative SAR Limit: 160 mW/g
Normal Max power: 24 dBm
Normal Max Power SAR Usage 2 mW/g*sec
Backoff Max power: 21dBm
backoff Max power SAR usage 1mW/g*sec
Cumulative SAR Value = Amount of SAR accumulated to date held by each table

2. Time Average SAR formula
Cumulative SAR Value + Normal MAX SAR + (Backoff MAX BACKOFF SAR * (Remaining Time - P)/P) > Cumulative SAR LIMIT

3. Conversion of PD(power density) and SAR
Cumulative PD / Cumulative Max PD <= 1
Remaining PD Margin / Accumulated Max PD = a.
SAR Margin / Cumulative Max SAR = a.
SAR Margin = a

In an electronic device according to an embodiment of the present disclosure, antennas that perform cellular and WiFi communications may be located at adjacent distances and located in the same antenna group. In this case, the electronic device may add up the SAR consumed for each communication used when performing communication. For example, in an electronic device, at least one of cellular and WiFi communication may operate as TAS as in the example above. Additionally, the electronic device of the present disclosure can calculate the size of SAR consumed over the past time and the remaining margin when operating in TAS, even if one of the two communication bands does not operate in TAS. According to Table 3 above, even if one of the two communication bands does not operate as TAS and is a specific communication band (Tech/Band) of an electronic device with a Max Power of S1 in Figure 4d, the SAR used during the past time D1 By saving the size, you can calculate the margin of the remaining SAR. Additionally, if only one of the two communication bands operates as TAS, the SAR margin can be transferred from the communication band that does not operate as TAS to only the communication band that operates as TAS.

FIG. 5B is a flowchart for explaining the operation of a Wi-Fi module and a communication processor according to an embodiment of the present disclosure.

According to one embodiment, the communication processor 260 may transmit and receive data with the Wi-Fi module 510. Meanwhile, as shown in FIG. 5A, the communication processor 260 may transmit and receive data through the Wi-Fi module 510 and the processor 120, or may directly transmit and receive data. According to one embodiment, the communication processor 260 and the Wi-Fi module 510 may transmit and receive data through an interface. Alternatively, according to one embodiment, the communication processor 260 and the Wi-Fi module 510 may transmit and receive data using shared memory. For example, one entity may write certain information (e.g., the cumulative value of SARs consumed and/or whether the cumulative value of consumed SARs exceeds a threshold) to the shared memory, and another entity may write certain information to the shared memory. You can also read the information from memory.

According to one embodiment, when both the communication processor 260 and the Wi-Fi module 510 are in a wake-up state, either entity may operate as the main device. Here, the main device may mean an entity that can perform allocation of SAR margin. In one example, communications processor 260 may operate as the main device, but this is not a limitation. When both entities 260 and 510 are awake, they may share SAR usage (571, 573, 575) periodically (e.g., 1 second, but there is no limit), as shown in FIG. 5B. In one example, SAR usage may be the cumulative value of SARs generated over a specified period of time. Alternatively, the SAR usage may be information indicating whether the cumulative value of SAR generated during a specified period exceeds a threshold. An entity operating as a main device (e.g., communications processor 260) may control SAR allocation based on SAR usage. For example, when the communication processor 260 is set as the main device, the communication processor 260 determines cellular communication and Wi-Fi based on the accumulated value of SAR corresponding to cellular communication and the accumulated value of SAR corresponding to Wi-Fi communication. A SAR margin can be allocated for each communication. Alternatively, the communication processor 260 receives information about whether the accumulated value of SAR corresponding to Wi-Fi communication exceeds a threshold, and allocates a SAR margin for each of cellular communication and Wi-Fi communication based on the received information. can do. If the Wi-Fi module 510 is set as the main device, those skilled in the art will understand that the above-described operation may be performed by the Wi-Fi module 510.

FIG. 5C is a flowchart for explaining the operation of a Wi-Fi module and a communication processor according to an embodiment of the present disclosure.

According to one embodiment, the communication processor 260 may transmit and receive data with the Wi-Fi module 510. Meanwhile, as shown in FIG. 5A, the communication processor 260 may transmit and receive data through the Wi-Fi module 510 and the processor 120, or may directly transmit and receive data. When one entity enters a sleep state, the entity that maintains the wake-up state can operate as the main device. For example, it is assumed that the communication processor 260 operates as a main device and enters a sleep state in operation 581. The communication processor 260 may provide sleep state notification to the Wi-Fi module 510 in operation 583. The sleep state notification may include information indicating entry into the sleep state, and may additionally include information about the accumulated value of SAR. Meanwhile, in FIG. 5C, it is shown that entry into the sleep state is performed in operation 581 and provision of sleep state notification is performed in operation 583, but there is no limit to the precedence/post-relationship between the two operations. Those skilled in the art will understand. The WiFi module 510 may operate as a secondary device and operate as a main device based on reception of a sleep state notification. The WiFi module 510 may perform SAR management in operation 585, at least as part of its operation as a main device. The WiFi module 510 may perform SAR management, for example, based on the SAR accumulation value consumed by cellular communication, included in the sleep state notification, or received separately from the sleep state notification. there is.

Meanwhile, for example, the WiFi module 510 may enter a sleep state in operation 587. If the communication processor 260 is still in the sleep state at the time operation 587 is performed, the Wi-Fi module 501 may hold transmission of the sleep state notification, but this is an example and the sleep state notification It may also be set to transmit a service. Afterwards, the communication processor 260 may wake up in operation 589. The communication processor 260 may provide a wake-up notification to the Wi-Fi module 510 in operation 591, based on wake-up. The WiFi module 510 may transmit the sleep state notification held in operation 593 based on reception of the wake-up notification from the communication processor 260. Communication processor 260 may operate as a main device based on receipt of sleep state notifications. The sleep state notification may include the accumulated value of SAR consumed by Wi-Fi communication, but this is an example and the accumulated value of the consumed SAR will be provided to the communication processor 260 separately from the sleep state notification. It may be possible. If the Wi-Fi module 510 is in a wake-up state, it can immediately provide the accumulated value of the consumed SAR, and if it is in a sleep state, it can wake up temporarily, provide the accumulated value of the consumed SAR, and then enter the sleep state again. there is. As described above, the communication processor 260 and the Wi-Fi module 510 can transmit and receive data using shared memory. For example, one entity may write information about sleep state notifications and/or wake up notifications, and/or accumulated values of consumed SARs, to shared memory, and another entity may write them to the shared memory. You can read it. The communication processor 260 and the Wi-Fi module 510 may use both shared memory and interfaces. For example, one entity may be set to provide information using shared memory when the other entity is in a sleep state, and to provide information through an interface when the other entity is in a wake-up state.

Figure 5d shows the SAR used by Wi-Fi during RACH operation according to a comparative example for comparison with the embodiment of the present disclosure.

In an electronic device according to an embodiment of the present disclosure, when WiFi communication is turned on in a cellular connection state, the cellular may consider that the WiFi uses the entire SAR allocated to the WiFi. In particular, in situations such as when the connection is not made even with WiFi on and only RACH is performed, or when the connection is made but actual data transmission does not occur properly due to a very weak electric field, the SAR used by the cellular may be very low. Referring to Figure 5d, it can be seen that although the cumulative SAR for WiFi is increasing very low, the WiFi SAR limit remains high after WiFi is turned on. In this case, Wi-Fi communication cannot use all of the SAR margin allocated to Wi-Fi, which may cause waste of SAR margin. If SAR margin is wasted in Wi-Fi communication, cellular communication cannot use the unconsumed SAR margin even though it could, and thus there is a possibility that unnecessary back-off for cellular communication may occur.

For example, a large number of SARs allocated to WiFi may mean that the SAR used by cellular for WiFi is greatly reduced. In this case, the electronic device may need to perform an earlier backoff when performing cellular communication. In other words, electronic devices may be allocated unused margin by WiFi, resulting in backoff in cellular communications.

FIG. 5E illustrates the size of the SAR margin for each communication, according to various embodiments of the present disclosure. As an example, referring to 501 in FIG. 5E, the total amount of SAR when an electronic device (e.g., electronic device 101 in FIGS. 1 to 2B) uses cellular and WiFi communication during a time period is shown. For example, cellular communications can use 100% of SAR. For example, when WiFi communication is not activated (e.g., when the WiFi module 510 is turned off), there is no need to allocate SAR margin to WiFi communication, so the entire maximum SAR can be allocated to cellular communication. You can. For example, referring to 503 of FIG. 5E, since the total amount of SAR is fixed, a certain amount of WiFi SAR may be allocated when WiFi communication is required while using cellular communication. For example, if WiFi communication is set to allocate 30% when turned on, 70% may be allocated to cellular communication. However, as explained in FIG. 5D, WiFi communication may consume only a relatively small amount of SAR, in which case there is a possibility that the SAR margin allocated for WiFi communication is wasted. Accordingly, the electronic device according to one embodiment may allocate a SAR margin to WiFi communication in stages. The electronic device does not allocate a 30% SAR margin, such as 503, to the WiFi communication from the time it is confirmed that the WiFi communication is activated, but at the first time, it allocates a relatively small SAR margin, such as 50% (e.g., 10%). ) of SAR margin can be allocated to WiFi communication. Referring to 502 of FIG. 5E, the SAR amount of cellular communication can be sufficiently secured by adjusting the SAR amount of WiFi according to the situation. For example, in cases where WiFi communication only performs RACH operations or when data communication is not performed smoothly, the SAR amount can be adjusted to be allocated to 10% in WiFi communication and 90% in cellular communication. Afterwards, when it is confirmed that a relatively large amount of SAR has been consumed by WiFi communication, the electronic device may adjust the SAR margin allocated to WiFi to a relatively large size such as 503 (for example, 30%).

FIG. 6A illustrates an operation of allocating the size of the SAR margin of Wi-Fi communication, according to an embodiment of the present disclosure.

The electronic device according to an embodiment of the present disclosure may adjust the WiFi SAR margin step by step when the SAR amount of WiFi communication exceeds a certain threshold.

At 601 of FIG. 6A, the electronic device (e.g., the electronic device 101 of FIGS. 1 to 2B) can check whether the WiFi module is turned on during cellular communication. For example, the processor 120 of FIG. 5A may check whether the Wi-Fi module 510 is activated. The processor 120 may provide information about whether the Wi-Fi module 510 is activated to the communication processor 260. The processor 120 may provide information about the activation state of the Wi-Fi module 501 to the communication processor 260, for example, based on a change in the activation state of the Wi-Fi module 501, but at the time and/or Alternatively, there is no limit to the provision trigger. Meanwhile, although not shown in FIG. 5A, the communication processor 260 may directly receive information about the activation state of the Wi-Fi module 501 from the Wi-Fi module 510, and the communication processor 260 may directly receive information about the activation state of the Wi-Fi module 501. There are no restrictions on the method of obtaining information about the activation state of 501.

In 603 of FIG. 6A, if it is determined that WiFi communication is not initiated (601-No), the electronic device uses the SAR margin allocated to one antenna group for a specific period (e.g., a first period) to cellular communication. You can allocate (e.g., 100% cellular). Meanwhile, in FIG. 6A, an example in which only cellular communication and Wi-Fi are included in one antenna group is described, but this is an example and those skilled in the art will understand that additional communication methods may be included in the corresponding antenna group. For example, one antenna group may include Bluetooth communication as well as cellular communication and Wi-Fi communication. For example, the distances between two of an antenna based on cellular communication, an antenna based on Wi-Fi communication, and an antenna based on Bluetooth communication may be less than a threshold distance, and thus the three communications may be included in one antenna group. In this case, the SAR allocated to one antenna group must be allocated not only to cellular communication and Wi-Fi communication, but also to Bluetooth communication so that an RF signal based on Bluetooth communication can be radiated. In this case, operation 603 is: If Bluetooth communication is disabled, the entire SAR assigned to the antenna group can be assigned to cellular communication, and if Bluetooth communication is activated, Bluetooth communication can be assigned to all SAR assigned to the antenna group. Those skilled in the art will understand that the remainder, excluding the allocation, is allocated to cellular communications.

When it is determined that WiFi communication is initiated (601 - Yes), the electronic device determines at 605 of FIG. 6A that the WiFi module is turned on and determines whether the accumulated SAR value consumed by the WiFi module is below the threshold. You can.

At 607 of FIG. 6A, if the electronic device determines that the cumulative SAR value consumed by the WiFi module is below the threshold (605 - yes), it selects a first amount (e.g., total SAR margin) of the SAR margin allocated for the first period. 10% of) may be allocated to WiFi communication, and the remaining amount excluding the first amount (for example, 90% of the total SAR margin) may be allocated to cellular communication. For example, rather than immediately allocating a SAR margin to WiFi communication after confirming that the WiFi module is turned on, the electronic device may increase the WiFi SAR margin when SAR is used in WiFi communication by a certain threshold. For example, if the total SAR margin that an electronic device can use is 100, if WiFi communication is initiated during cellular communication, the total SAR margin is increased by 10 for WiFi communication and 90 for cellular communication because a certain threshold has not been exceeded. Can be assigned.

At 609 of FIG. 6A, if the electronic device determines that the cumulative SAR value consumed by the WiFi module is above the threshold (605-No), it selects a second amount (yes, For example, 30% of the total SAR margin) may be allocated to WiFi communication, and the remaining amount excluding the second amount (eg, 70% of the total SAR margin) may be allocated to cellular communication. For example, the electronic device can confirm that the WiFi module is turned on and determine if the WiFi communication is using an amount of SAR that exceeds a threshold. In this case, the electronic device may increase the SAR margin allocated to WiFi after checking the accumulated SAR usage in WiFi communication. For example, if the total SAR margin that an electronic device can use is 100, if WiFi communication is performed during cellular communication, after checking the accumulated SAR usage of WiFi communication, allocate 30 to WiFi communication and 70 to cellular communication. You can.

FIG. 6B is a flowchart explaining a method of operating an electronic device according to an embodiment.

According to one embodiment, the electronic device may check whether the Wi-Fi module and/or the Bluetooth module are turned on (or activated) in operation 631. If the Wi-Fi module and/or the Bluetooth module are not turned on (or not activated) (631-No), the electronic device, in operation 633, uses the SAR margin allocated for one antenna group to cellular communication. Can be assigned. When the Wi-Fi module and/or the Bluetooth module are turned on (or activated) (631-Yes), the electronic device may check whether there is transmission data based on cellular communication in operation 635. Alternatively, the electronic device may check whether a cellular communication-based antenna is included in the corresponding antenna group. If there is no cellular communication-based transmission data (635-No), the electronic device may allocate the allocated SAR margin to Wi-Fi communication and/or Bluetooth communication in operation 643. If there is cellular communication-based transmission data (635-Yes), the electronic device may check whether the value of accumulated SAR consumed by the Wi-Fi module and/or Bluetooth module is less than or equal to the threshold in operation 637. If the value of the accumulated SAR consumed by the Wi-Fi module and/or the Bluetooth module is less than or equal to the threshold (637-Yes), the electronic device may use a first amount of the SAR margin allocated for the first period in operation 639 to use the Wi-Fi communication and/or It can be allocated to Bluetooth communication, and the remainder except the first amount can be allocated to cellular communication. If the value of accumulated SAR consumed by the Wi-Fi module and/or the Bluetooth module is above the threshold (637-No), the electronic device in operation 641 selects a second amount of the SAR margin allocated for the first period that is greater than the first amount. It can be allocated to Wi-Fi communication and/or Bluetooth communication, and the remainder except the second amount can be allocated to cellular communication.

Figure 7 shows cumulative SAR according to the allocated SAR margin of Wi-Fi communication, according to an embodiment of the present disclosure.

The electronic device according to an embodiment of the present disclosure may perform WiFi operation without backoff according to a change in the SAR margin of WiFi communication. Meanwhile, although Wi-Fi communication is described in FIG. 7, those skilled in the art will understand that Wi-Fi communication may be replaced by Wi-Fi communication and/or Bluetooth communication in this and other embodiments. Referring to FIG. 7, the electronic device shows the accumulated SAR amount 711 when the WiFi module is turned on and WiFi communication is performed at a certain power. For example, when WiFi is turned on (e.g., WiFi ON #1 in FIG. 7), the electronic device sets the SAR margin to the first amount (607 in FIG. 6A) because the accumulated SAR usage 711 does not exceed the threshold. ) (for example, WiFi #1 SAR in FIG. 7). The electronic device adjusts the WiFi SAR margin to a first amount (607 in FIG. 6A) at a point where the accumulated value of SAR consumed by WiFi communication exceeds the threshold (e.g., WiFi ON #2) (e.g., It can be increased from WiFi #1 SAR in FIG. 7 to the WiFi SAR limit (eg, the second amount described in FIG. 6A). Accordingly, even if the maximum value 712 of Wi-Fi transmission power is not backoff, TAS in Wi-Fi may not fail.

FIG. 8 illustrates the cumulative SAR of cellular communication according to a change in the SAR margin of Wi-Fi communication, according to an embodiment of the present disclosure.

An electronic device according to an embodiment of the present disclosure can perform effective cellular communication operations according to changes in the SAR margin of WiFi communication. As an example, when WiFi does not use SAR above the threshold, the electronic device may continue to perform communication in cellular communication without backoff of the maximum value 812 of the transmission power of cellular communication. For example, referring to FIG. 8, the electronic device of the present disclosure may perform cellular communication using Cellular Tx Power in the first time period. Referring to FIG. 8, while performing cellular communication, WiFi communication may be initiated (601-Yes in FIG. 6A) (for example, WiFi ON #1 in FIG. 8). In this case, the electronic device was able to allocate the entire SAR margin allocated during the first period (or the SAR margin minus the SAR allocation of other communication methods (e.g., BT)) to cellular communication, so that the SAR of the initial cellular communication The limit may be Cellular SAR LIMIT in FIG. 8 (603 in FIG. 6A). As an example, when WiFi communication is turned on (601-example in FIG. 6A), the electronic device is allocated the WiFi SAR margin by the first amount, referring to FIG. 6A. Therefore, referring to FIG. 8, the cellular SAR margin is changed from Cellular SAR LIMIT to Cellular. It can be reduced to SAR WiFi ON #1 (607 in FIG. 6A). Even if the SAR margin of cellular communication is reduced to a certain extent, the electronic device does not have a large accumulated SAR usage amount (811), so backoff of the maximum value (812) of the transmission power may not be performed. Since the Wifi ON#2 event, for example, an event in which a cumulative SAR above the threshold corresponding to Wifi communication is used, is not detected, the electronic device uses a relatively large (e.g., 90%) SAR margin for cellular communication. It can be assigned to , and since a relatively large SAR margin is allocated to cellular communication, the maximum value 812 of the transmission power corresponding to cellular communication may not be backed off.

Figure 9 is an example of a case where the transmission power of cellular communication is set to be larger than that of Figure 8.

Since the maximum value 921 of the transmission power of cellular communication is greater than the maximum value 812 of the transmission power in FIG. 8, the slope of the graph of the accumulated SAR 911 may be greater than the slope of the graph of the accumulated SAR 811 in FIG. 7 there is. In the example of FIG. 9 , it is assumed that the Wifi ON#2 event, for example, an event in which Wifi communication uses a SAR higher than the threshold, was not detected. The electronic device allocates a SAR margin (e.g., 10%) of the first value to the Wi-Fi module 510 in a Wifi ON#1 event, for example, when the Wi-Fi module 510 is activated, The remainder (e.g. 90%) can be allocated to cellular communications. The remainder (eg, 90%) may be Cellular SAR Wifi ON #1 of FIG. 9. Meanwhile, Cellular SAR Wifi ON #2 in FIG. 9, for example, a Wifi ON#2 event, for example, a SAR margin (e.g., 70 %). If the first Wifi ON#1 event, for example, from the time when activation of the Wi-Fi module 510 is detected, a Wifi ON#2 event, for example, an event in which Wifi communication uses a SAR above the threshold is detected. If only the SAR margin (e.g., 70%) of the case is allocated to cellular communications, the maximum value of the transmit power corresponding to cellular communications may have to be backed off relatively early. However, at the first Wifi ON#1 event, for example, when activation of the Wi-Fi module 510 is detected, Cellular SAR Wifi ON #1 is assigned to cellular communication, so the maximum value of the transmission power corresponding to cellular communication is The back-off point may be delayed. For example, in FIG. 9, at the point of cellular backoff due to insufficient SAR margin, the maximum value 922 of transmission power corresponding to cellular communication may be backoff compared to the existing maximum value 921. Due to back-off, the slope of the graph of the accumulated SAR (912) may also decrease than the slope of the graph of the existing accumulated SAR (911). If the first Wifi ON#1 event, for example, from the time when activation of the Wi-Fi module 510 is detected, a Wifi ON#2 event, for example, an event in which Wifi communication uses a SAR above the threshold is detected. If only the SAR margin (e.g., 70%) of the case is allocated to cellular communications, the maximum value of the transmit power corresponding to cellular communications may have to be backed off relatively early. However, at the first Wifi ON#1 event, for example, when activation of the Wi-Fi module 510 is detected, Cellular SAR Wifi ON #1 is assigned to cellular communication, so the maximum value of the transmission power corresponding to cellular communication is The back-off point may be delayed.

FIG. 10 illustrates the cumulative SAR of cellular communication according to a change in the SAR margin of Wi-Fi communication, according to an embodiment of the present disclosure.

For example, the electronic device according to an embodiment of the present disclosure may continue to use cellular communication until the WIFI ON #1 event occurs, thereby increasing the accumulated SAR (1011). Depending on the occurrence of the WiFi ON #1 event, the SAR margin of cellular communication may decrease to Cellular SAR WiFi ON #1 (e.g., 90%). Cellular SAR Wifi ON #2 in FIG. 10 is, for example, a SAR margin (e.g., 70%) when a Wifi ON#2 event, for example, an event in which Wifi communication uses SAR above the threshold is detected. It can be. If only the SAR margin (e.g., 70%) is allocated to cellular communication when a Wifi ON#2 event, for example, an event in which Wifi communication uses a SAR above the threshold, is detected, it responds to cellular communication. The maximum value of transmit power may have to be backed off relatively early. However, in a situation where an electronic device transmits signals intermittently after WiFi ON #1, for example, there may be a case where cellular transmission power (Cellular Tx power) is used only at one point. Referring to FIG. 10, it can be seen that the maximum value (1021) of the transmission power corresponding to cellular communication is continuous before WiFi ON#1, but the maximum values (1022, 1023, and 1024) thereafter are discrete. In this case, the increase in accumulated SAR 1012 that the electronic device uses for cellular communication is very small, so the electronic device may not need cellular backoff. According to an embodiment of the present disclosure, even if the accumulated SAR usage in WiFi communication exceeds the threshold corresponding to WiFi communication, the Internet APN (access point name) is assigned to WiFi, so IMS (IP multimedia subsystem) Except for APN, there is no signal transmission in cellular, so even if the WiFi SAR margin is assigned to the original setting (e.g., 30%), there is almost no SAR consumption in cellular communication, so cellular backoff occurs during intermittent signal transmission. It may not be necessary.

FIG. 11 illustrates an operation of allocating the size of a SAR margin during a voice call operation in Wi-Fi communication, according to an embodiment of the present disclosure.

For numbers 601, 603, and 605 of FIG. 11, the description of FIG. 6A can be applied.

At 1101 of FIG. 11, the electronic device of the present disclosure can confirm that the value of the accumulated SAR consumed by the WiFi module is not less than the threshold (605-No) and check whether VoWiFi is operating (VoWiFi ON). . The electronic device according to an embodiment of the present disclosure needs to sufficiently secure the SAR margin of WiFI so that the SAR margin of WiFi is not insufficient when operating VoWiFi. The electronic device according to the present disclosure can enable VoWiFi voice calls to operate stably.

At 609 of FIG. 11, if the electronic device determines that the cumulative SAR value consumed by the WiFi module exceeds the threshold (605-No) (e.g., WiFi ON #2 event of FIGS. 7 and 10), the first Among the SAR margins allocated during the period, a second amount greater than the first amount (e.g., 30% of the total SAR margin) is allocated to WiFi communication, and the remaining amount excluding the second amount (e.g., 30% of the total SAR margin) is allocated to WiFi communication. 70%) can be allocated to cellular communications. In this case, the electronic device may increase the SAR margin allocated to WiFi after checking the accumulated SAR usage in WiFi communication. As an example, the electronic device of the present disclosure may operate under certain conditions, such as when WiFi communication is initiated (601-Yes) and the cumulative SAR value consumed by WiFi communication exceeds the threshold (605-No). If this is not satisfied, a second amount of the SAR margin allocated during the first period may be allocated to WiFi communication (1101-No), and the remaining SAR margin may be allocated to cellular communication.

At 1103 of FIG. 11, the electronic device according to an embodiment of the present disclosure provides a third amount (e.g., 40% of the total SAR margin) that is greater than the second amount among the SAR margins allocated during the first period to Wi-Fi communication. allocation, and the remaining amount excluding the third amount (for example, 60% of the total SAR margin) may be allocated to cellular communication. As an example, the electronic device needs to increase the SAR margin allocated to WiFi communication when the start of VoWiFi operation is confirmed (1101-Yes). Through this, VoWiFi voice call operation can be maintained stably.

Figure 12 shows accumulated SAR during voice call operation in Wi-Fi communication, according to an embodiment of the present disclosure.

Referring to FIG. 12, the cumulative SAR usage amount (1201) due to Wi-Fi communication while the electronic device is at the maximum value (1211) of transmission power corresponding to WiFi communication is shown. According to an embodiment of the present disclosure, the electronic device may initiate WiFi communication (for example, check the occurrence of the WiFi ON #1 event in FIG. 12) during cellular communication. When WiFi communication is initiated and it is confirmed that the cumulative SAR usage 1201 of WiFi communication is below the threshold corresponding to WiFi communication, the electronic device sets the SAR margin (WiFi SAR LIMIT) of WiFi communication to the first amount (WiFi #1). SAR) can be set (for example, 10%). If the electronic device determines that the cumulative SAR usage of WiFi communications exceeds a threshold (e.g., WiFi ON #2 event), the SAR margin of WiFi communications is increased by a second amount (e.g., 30%) (e.g., For example, the backoff time can be delayed by increasing the Wifi SAR LIMIT of FIG. 12. Referring to FIG. 12, it can be seen that the maximum value 1212 of the transmission power of WiFi communication has decreased due to backoff occurring after the WiFi ON #2 event. Accordingly, the slope of the accumulated SAR (1202) may be reduced compared to the slope of the existing accumulated SAR (1201). If the SAR margin of WiFi is maintained at the second amount (eg, 30%), it may be difficult for the electronic device to smoothly perform VoWiFi voice call operation. In this case, when the electronic device confirms that a VoWiFi voice call operation is initiated, the electronic device may increase the SAR margin of WiFi to a third amount (e.g., 40%) (e.g., VoWiFi SAR LIMIT in FIG. 12). Accordingly, the maximum value (1213) of WiFi transmission power can be restored, and stable VoWiFi performance can be possible. During this time, the accumulated SAR 1203 may have a larger slope than the existing accumulated SAR 1202, and the accumulated SAR 1203 may exceed the WiFi SAR LIMIT, but may be less than the VoWiFi SAR LIMIT.

FIG. 13 illustrates an operation of allocating the size of a SAR margin during a voice call operation of cellular communication during a Wi-Fi connection, according to an embodiment of the present disclosure.

Referring to FIG. 13, it shows a case where a WiFi voice call is initiated and VoLTE or VoNR operation is initiated.

For numbers 601, 603, and 605 of FIG. 13, the description of FIG. 6A can be applied.

For numbers 1101 and 1103 of FIG. 13, the description of FIG. 11 can be applied mutatis mutandis.

At 1301 of FIG. 13, the electronic device according to an embodiment of the present disclosure detects when the value of accumulated SAR consumed by the WiFi module exceeds the threshold (605-No) and when VoWiFi does not operate (1101-No) You can check whether cellular voice operation is initiated.

The electronic device according to an embodiment of the present disclosure may need to sufficiently secure the SAR margin of cellular communication so that the SAR margin of cellular communication is not insufficient during cellular voice operation. An electronic device according to an embodiment of the present disclosure can enable cellular voice calls to operate stably.

In 609 of FIG. 13, the electronic device determines that the accumulated SAR value consumed by the WiFi module exceeds the threshold (605-No) and when the WiFi voice call or cellular voice call operation is not performed (1101-No, 1301-No) ), among the SAR margins allocated for the first period, a second amount (e.g., 30% of the total SAR margin) larger than the first amount is allocated to WiFi communication, and the remaining amount excluding the second amount (e.g., About 70% of the total SAR margin can be allocated to cellular communications.

At 1303 of FIG. 13, the electronic device confirms that the accumulated SAR value consumed by the WiFi module exceeds the threshold (605-No) and the WiFi voice call is not operated (1101-No), but the cellular voice call operation is performed. If confirmed (1301-Yes), allocate a fourth amount (e.g., 20% of the total SAR margin) of the SAR margin allocated for the first period, which is greater than the first amount but less than the second amount, to WiFi communications; Excluding the fourth amount, the remaining amount (e.g., 80% of the total SAR margin) may be allocated to cellular communication.

In an electronic device according to an embodiment of the present disclosure, cellular SAR may not be insufficient in a situation where signals are continuously transmitted through WiFi communication in a WiFI connection state. However, when cellular voice call operation is initiated, the Internet APN is transmitted through WiFi and the voice call transmits data through cellular, so the SAR margin of cellular communication may be insufficient. According to an embodiment of the present disclosure, if the electronic device determines that the cellular SAR margin is insufficient after checking the accumulated SAR usage in cellular communication, it does not allocate SAR to WiFi or only partially allocates SAR to WiFi even if WiFi requests SAR. The allocated SAR margin can be increased. Therefore, when the start of VoLTE or VoNR operation is confirmed, the electronic device can increase the SAR margin of cellular communication and stably maintain voice call operation of cellular communication.

Figure 14 shows the accumulated SAR during a voice call operation of cellular communication during a Wi-Fi connection, according to an embodiment of the present disclosure.

According to an embodiment of the present disclosure, the electronic device may display accumulated SAR 1411 when performing cellular communication and simultaneously initiating WiFi communication. As an example, the SAR 1411 accumulated in cellular communication may increase during the maximum value 1421 of transmission power corresponding to cellular communication. Meanwhile, while a phone service (eg, VoIP service) through cellular communication is performed, the maximum value 1422 of transmission power can be expressed discretely, as shown in FIG. 14. During this time, the cumulative SAR 1412 of cellular communication may increase, but may have a smaller slope than before. Meanwhile, in order to perform stable VoIP service, if it is determined that the cellular SAR margin is insufficient while the VoIP service is being performed, the SAR margin (VoIP SAR LIMIT) allocated to cellular communication can be increased. For example, even when WiFi communication is initiated during cellular communication (WiFi ON #1 event) and the accumulated SAR usage of WiFi communication is confirmed to exceed the threshold (WiFi ON #2 event), the electronic device The device can stably maintain the transmission signal strength of cellular communication by increasing the SAR margin (VoIP SAR LIMIT) of cellular communication when the start of VoLTE or VoNR operation is confirmed (cellular voice call).

Figure 15a shows cumulative SAR when the Wi-Fi SAR margin increases step by step, according to an embodiment of the present disclosure. Figure 15b shows the cumulative SAR of cellular communication when the Wi-Fi SAR margin increases step by step, according to an embodiment of the present disclosure.

The electronic device according to an embodiment of the present disclosure can increase or decrease the SAR margin of cellular and/or Wi-Fi communication in stages, and referring to FIGS. 15A and 15B, the cumulative SAR when the stages are further divided can be shown. . For example, if data needs to be transmitted continuously over WiFi, most of the data is transmitted over WiFi and the cumulative SAR 1521 or instantaneous SAR consumed on cellular may not be high. In this case, the electronic device checks whether performance of WiFi communication is initiated (occurrence of WiFi ON #1 event), then checks whether the SAR margin usage of WiFi communication exceeds the first threshold (occurrence of WiFi ON #2 event). Confirm) If the first threshold is exceeded, the SAR margin of WiFi communication can be increased from the first amount (WiFi#1 SAR) to the second amount (WiFi#2 SAR). The electronic device may set multiple SAR margins for multiple WiFi communications as shown in FIG. 15A. For example, when the SAR margin usage of WiFi communication exceeds a second threshold that is greater than the first threshold, the electronic device increases the SAR margin of WiFi from the second amount (WiFi#2 SAR) to the third amount (WiFi#3 SAR). ) can be increased. Similarly, when the accumulated SAR 1511 of WiFi increases, the electronic device may check the threshold for the accumulated SAR 1511 n times. According to the present disclosure, the electronic device can distribute the SAR margin at an appropriate rate in response to the increase and/or decrease in SAR usage by subdividing the confirmation of the threshold for the accumulated SAR 1511 of WiFi communication. Meanwhile, as Wi-Fi communication is continuously performed, data transmission and reception based on cellular communication may occur in relatively small numbers, and accordingly, as shown in FIG. 15b, the accumulated SAR (1521) corresponding to cellular communication increases relatively slowly. You can check it.

Figures 16a and 16b illustrate the SAR usage of each communication when sharing the SAR margin between Wi-Fi communication and cellular communication on the same time scale, according to an embodiment of the present disclosure.

According to one embodiment, a communications processor (e.g., first communications processor 212, second communications processor 214, and/or integrated communications processor 260) may transmit and receive data to and from the Wi-Fi module. . For example, if both the communication processor and the Wi-Fi module are in a wake-up state, the communication processor may operate as the main device and the Wi-Fi module may operate as the secondary device, but there is no limitation. The communications processor and Wi-Fi module may share the amount of SAR used at specified intervals (e.g., 1 second). The main device (e.g. a communications processor) may, for example, provide the secondary device with a maximum value of transmit power for the next period and/or a SAR margin, but is not limited to this. If one entity is in a sleep state, the entity in the sleep state can operate as a secondary device, and the entity in a wake-up state can operate as a main device. For example, one entity may provide the accumulated SAR and/or sleep notification used before entering the sleep state to another entity. The entity that receives the sleep notification can operate as the main device. Meanwhile, when an entity in a sleep state wakes up, a wake-up notification can be provided. The entity that received the wake-up notification may provide information about the cumulative amount of SAR used to date. Both entities can share data, for example, by sharing data through an interface or by writing/reading information to shared memory. For example, both entities may share information about SAR usage using both interfaces and shared memory.

When the electronic device of the present disclosure requests a SAR margin from the cellular communication module to the Wi-Fi communication module, the remaining SAR margin that can be transmitted from the Wi-Fi module is calculated and transmitted to the cellular communication module. For example, the Wi-Fi communication module can check the SARs 1622, 1623, and 1624 used to date and the size of the transferable SAR margin 1621. Sharing the SAR margin 1621 between the Wi-Fi communication modules may be equivalent to adding the corresponding SAR margin 1621 to the accumulated SAR from the perspective of Wi-Fi communication. The cellular communication module may receive the SAR margin 1621 from the Wi-Fi module, which may be equivalent to subtracting the corresponding SAR margin 1601 from the existing accumulated SAR. Accordingly, the cellular communication module can manage the accumulated SAR not as the sum of 1601, 1602, 1603, and 1604, but as the sum of 1602, 1603, and 1604 excluding 1601.

According to an embodiment of the present disclosure, when at least one communication, such as WiFi communication, cellular communication, or Bluetooth (BT) communication, is performed through an adjacent communication module, the electronic device may allocate for each communication in consideration of a certain total SAR margin. there is. In the case of having a fixed SAR margin, if there is SAR margin remaining in one communication, the effective total amount of SAR can be shared by using the remaining margin in other communications. For example, if the SAR margin of WiFi communication is insufficient and the SAR margin of cellular communication is sufficient, or if the SAR margin of cellular communication is insufficient and the SAR margin of WiFi communication is sufficient, the SAR margin between WiFi communication and cellular communication is communicated to each other. can do.

Here, the case where the SAR margin remains may mean the case where the remaining SAR margin cannot be used up during the remaining time in a certain time scale. For example, if the time scale in an electronic device that supports TAS operation is 100 seconds, from the perspective of the RF exposure amount table 97 seconds from the start, the amount of SAR that can be used when operating at maximum power among the remaining 3 seconds is Except, the SAR that can be used is the SAR margin that cannot be used in the current communication tech/band status, and can be considered as SAR that can be transmitted to another communication tech/band without any problem. The electronic device according to an embodiment of the present disclosure may allocate the remaining SAR margin to other communications (e.g., Cellular or WIFI), and if SAR backoff is required in WIFI or Cellular, the remaining margin can be shared with each other. Backoff can be reduced.

Transfer SAR Margin according to an embodiment of the present disclosure can be calculated through Equation 1.

The transmissible SAR margin calculated in Equation 1 may exist for each RF exposure amount table. In an electronic device that communicates with multiple networks, when Tech A (e.g., cellular communication) makes a margin request to Tech B (e.g., Wi-Fi communication), Tech B receives the above formula. The Transfer SAR Margin obtained through is delivered to Tech A, and the cumulative SAR Limit of each RF exposure amount table of Tech A can be calculated based on the size of Tech B Transfer SAR Margin backed off for other techs. For example, when an electronic device according to an embodiment of the present disclosure initiates WiFi communication, the size of the backoff in cellular communication means the size of the SAR used by the WIFI from a cellular perspective, and the ratio of the SAR margin handed over by the WIFI and By multiplying the amount of cellular backoff, you can find the SAR margin transmitted from WIFI to cellular communication. For example, in the electronic device of the present disclosure, WIFI and/or cellular communication measures the SAR Limit under simultaneous radiation conditions, and like the sum of vectors, the sum of the two techs will be 100+100 = 150, not 100+100 = 200. The formula for converting this can be expressed as Equation 2 to Equation 4 below.

In Equations 2 to 4 above, an example of backoff according to initiation and/or termination of WIFI and/or cellular communication may be as shown in Table 4 below.

No Cellular NR Free RCV RCV+NR WIFI(2Tx) Max Power 20dBm 16dBm 16dBm 13dBm Cellular WIFI off X 23.5dBm X 20dBm WIFI on X 22dBm X 18dBm

Transferred Time delay Margin in Equation 4 above refers to the SAR margin lost due to the time difference occurring in transferring the SAR margin between cellular and WiFi, and its size can be calculated using Equation 5 below.

For example, if Equation 5 is applied, Max Power is 23dBm, SAR consumption is 3W/KG, and Delay time is up to 1 second, 3W/KG can be calculated as Transfer Time delay Margin.

The method of sharing WIFI and/or Cellular SAR Margin in an electronic device according to an embodiment of the present disclosure is Cellular SAR Request -> AP (RIL) -> WIFI Return SAR Margin -> AP (RIL) -> Cellular and/ Alternatively, it can operate in the following manner: WIFI SAR Request -> AP(RIL) -> Cellular Return SAR Margin -> AP(RIL) -> WIFI. Specifically, for examples of SAR margin sharing between tech/band, please refer to Example 1 and Example 2 below.

Example 1

i. Initially, the cumulative SAR Max (100W/kg) of each tech was delivered.

ii. When Return SAR Margin, the SAR Margin for each second is delivered.

99-20, 98-16, 97-12, 96-8, 95-4, 94-0

One. 20w/kg is delivered to the RF exposure table for 99 seconds.

2. 16w/kg is delivered to the RF exposure table in 98 seconds.

3. 12w/kg is delivered to the RF exposure table in 97 seconds.

4. 8w/kg is delivered to the RF exposure table for 96 seconds.

5. 4w/kg is delivered to the RF exposure table for 95 seconds.

6. 0w/kg is delivered to the RF exposure table in 94 seconds.

iii. Divide the received SAR Margin by the accumulated Max SAR to obtain a ratio and calculate this as the SAR of the tech that received the SAR.

Example 2

i. When Return SAR Margin, the ratio of SAR Margin for each second is transmitted.

ii. The ratio is calculated as the SAR of the tech that received the SAR.

99-20, 98-16, 97-12, 96-8, 95-4, 94-0

One. 20% is transferred to the 99 second RF exposure table.

2. 16% delivered to 98 seconds RF exposure table.

3. 12% transmitted to 97 seconds RF exposure table.

4. 8% delivered to 96 second RF exposure table.

5. 4% delivered to 95 second RF exposure table.

6. 0% transmitted to RF exposure table in 94 seconds.

According to an embodiment of the present disclosure, an electronic device can use SAR in a communication tech/band that requires Tx transmission by allocating SAR margins for WIFI communication and/or cellular communication step by step. Through this, the frequency of backing off transmission power due to a lack of SAR in one tech/band can be reduced, and as a result, the TP of the entire terminal can be improved and the mute or RLF of voice calls can be reduced.

According to an embodiment of the present disclosure, an electronic device may allocate a SAR margin step by step and/or share the allocated SAR margin between WIFI communication and/or cellular communication. Various embodiments of the present disclosure are not limited to the described tech/band and can also be applied to various communications such as Bluetooth (BT) or UWB.

Figures 17a and 17b illustrate the SAR usage of each communication when sharing the SAR margin between Wi-Fi communication and cellular communication on different time scales, according to an embodiment of the present disclosure.

The electronic device according to an embodiment of the present disclosure may have different WIFI and cellular time scales in TAS operation. For example, the SAR measurement time may be 100 seconds Average for 3 GHz or less and 60 seconds for 3 GHz to 6 GHz. Accordingly, the time scale (Average Time) of cellular and WiFi may be different, and in this case, in a tech with a short time scale time, the SAR remaining in the past time may be transferred to another tech without considering the later Max Power operation.

Referring to FIGS. 17A and 17B, the electronic device shows an operation of sharing the SAR margin when the time scale is 60 seconds in cellular communication and 100 seconds in Wi-Fi communication.

For example, if either Wi-Fi or cellular communication in an electronic device does not operate with Time Average SAR, it can operate as follows. For example, it operates as Time Average SAR, but in certain technologies, the peak may be specified to prevent it from rising above a certain power. Alternatively, either Wi-Fi or cellular communication may not operate in Time Average SAR, or may operate as if not in Time Average SAR even while operating in Time Average SAR. In this case, the remaining SAR margin can be shared between techs.

For example, in a specific time scale, all power transmitted below Max Power up to the current point is judged to be the SAR margin, and the SAR margin can be immediately shared regardless of the power at the future point. In this case, if SAR margin transfer between different technologies is possible, the SAR margin can be sum(Max Power SAR - Current Power SAR).

For example, in Figures 17a and 17b, considering the accumulated SAR (1702, 1703, 1704) in cellular communication, the SAR margin 1701 is allocated to the Wi-Fi communication side based on the expectation that SAR fail will not occur. You can. Allocation of the SAR margin 1701 may be the same as adding the corresponding SAR margin 1701 to the accumulated SAR on the cellular communication side. Accordingly, the cumulative SAR on the cellular communication side can be managed as the sum of 1701, 1702, 1703, and 1704. In addition, the cumulative SAR of the Wi-Fi communication side can be set to 1711, 1713, 1714, which is the value minus the SAR margin 1712, and accordingly, backoff of the maximum value of the transmission power is not performed. Alternatively, the back-off point may be delayed.

FIG. 18 is a flowchart explaining a method of operating an electronic device according to an embodiment.

According to one embodiment, the electronic device may check the antenna group in operation 1801. In operation 1803, the electronic device may confirm communications included in the antenna group to be confirmed. For example, the electronic device may check at least one communication corresponding to each of at least one antenna included in the antenna group. In operation 1805, the electronic device may check the SAR allocation for each communication based on the confirmed communication. For example, Table 5 is a lookup table of SAR allocations for Bluetooth communication for cases of confirmed communication by one example.

SAR margin of the 1st antenna group (%) (Cellular communication and Wi-Fi communication) 50% bluetooth communication 90% Bluetooth communication and (cellular communication and Wi-Fi communication use one transmission RF path) 30% Bluetooth communication (cellular communication and Wi-Fi communication use two transmission RF paths) 20%

For example, when cellular communication and Wi-Fi communication are activated, the electronic device may allocate 50% of the SAR allocated to the antenna group to Bluetooth communication. For example, when only Bluetooth communication is activated, the electronic device may allocate 90% of the SAR allocated to the antenna group to Bluetooth communication. For example, when Bluetooth communication is activated and cellular communication and Wi-Fi communication use one transmission RF path, the electronic device may allocate 30% of the SAR allocated to the antenna group to Bluetooth communication. For example, when Bluetooth communication is activated and cellular communication and Wi-Fi communication use two transmission RF paths, the electronic device may allocate 20% of the SAR allocated to the antenna group to Bluetooth communication.

Figure 19 shows a flowchart for explaining a method of operating an electronic device according to an embodiment.

According to one embodiment, the electronic device may check whether the Bluetooth module is turned on (or activated) in operation 1901. If the Bluetooth module is not turned on (or not activated) (1901-No), in operation 1903, the electronic device adjusts the SAR margin allocated for one antenna group to cellular communication and/or Wi-Fi communication. Can be assigned. When the Bluetooth module is turned on (or activated) (1901 - Yes), the electronic device may check whether there is transmission data based on cellular communication and/or Wi-Fi communication in operation 1905. Alternatively, the electronic device may check whether the corresponding antenna group includes an antenna based on cellular communication and/or Wi-Fi communication. If there is no cellular communication-based transmit data (1905-No), the electronic device, in operation 1913, determines a third amount of SAR margin (e.g., may be, but is not limited to, 90% of the allocated SAR margin). Can be assigned to Bluetooth communication. If there is transmission data based on cellular communication and/or Wi-Fi communication (1905 - Yes), the electronic device may check whether the value of accumulated SAR consumed by Bluetooth communication is less than or equal to the threshold in operation 1907. If the value of accumulated SAR consumed by the Bluetooth module is less than or equal to the threshold (1907-yes), the electronic device may, in operation 1909, use a first amount (e.g., 90%) of the allocated SAR margin for the first period to communicate with the cellular communication. And/or allocate to Wi-Fi communication, and the remaining amount excluding the first amount (for example, 10%) may be allocated to Bluetooth communication. If the value of accumulated SAR consumed by the Bluetooth communication is above the threshold (1907-No), the electronic device, in operation 1911, divides a second amount (e.g., 70%) of the SAR margin allocated for the first period to the cellular communication. And/or allocate to Wi-Fi communication, and the remaining amount excluding the second amount (for example, 30%) may be allocated to Bluetooth communication.

FIG. 20A shows a flowchart explaining a method of operating an electronic device according to an embodiment. The embodiment of FIG. 20A will be described with reference to FIG. 20B. Figure 20b shows SAR generated based on Bluetooth communication.

According to one embodiment, the electronic device may determine the SAR margin of Wi-Fi and/or BT in operation 2001. The SAR margin of each communication may be determined, for example, based on the size and ratio of SAR available in the entire SAR and/or the maximum transmit power operable for each communication, but there is no limit. The electronic device, in operation 2003, may determine whether Wi-Fi and/or BT is in peak-power mode. Peak-power mode may mean, for example, a mode in which transmission is performed with transmission power below a certain amount of power (this may be referred to as peak-power). For example, in the case of a hearing aid, it may be required not to generate noise above a certain level, and a peak-power mode may be set. If it is required that the transmission power not change as the maximum transmission power size changes based on SAR, it can be set to peak-power mode. Alternatively, in countries that do not support time-averaged SAR regulations, peak-power mode can be set. Meanwhile, at least some of the plurality of communication methods supported by the electronic device may be set to peak-power mode, and the rest may operate based on time average SAR regulations. For example, at least one of cellular communication, Bluetooth communication, and/or Wi-Fi communication may operate in peak-power mode. In this case, the remaining SAR margin of a communication operating in peak-power mode can be immediately shared with other communications without time delay.

According to one embodiment, when Wi-Fi and/or BT is in peak-power mode (2003-Yes), the electronic device may, in 2005 operation, share the remainder of the SAR margin of Wi-Fi and/or BT with the cellular communication in real time. You can. For example, in Figure 20b, the SAR consumed by BT when BT is in peak-power mode (2021) is shown. The electronic device can share the residual (2023) of SAR for BT to the cellular communication in real time, based on BT being in peak-power mode. The electronic device can immediately share the remainder of the SAR (2023) with the cellular communication, without taking into account the future SAR expected to be consumed by the BT. On the other hand, if Wi-Fi and/or BT are not in peak-power mode (2003-No), the electronic device, in 2007 operation, detects the residual SAR of BT and/or Wi-Fi, for example based on a request by cellular communication. You can also share. Meanwhile, those skilled in the art will understand that Bluetooth communication, cellular communication, and Wi-Fi communication are merely examples and that there is no limit to the types of communication.

For example, a communication entity operating in peak-power mode may in practice transfer transmit power to another communication entity. For example, another communication entity that has received the relevant information can add the remaining SAR, which is determined based on the difference between the maximum transmit power and the current transmit power (max power - current power), to the overall SAR margin of that communication in real time. there is.

For example, a communication entity operating in peak-power mode may convey to another communication entity an average (or sum) of the transmission power seen over a period of time (e.g., a measurement period). For example, another communicating entity that has received relevant information may ascertain the remaining SAR based on the average of the received transmit power. For example, based on the maximum value of the transmitted power corresponding to a communication operating in peak-power mode and the average of the received transmitted power (Max Power assigned to the tech operating in Peak Power minus the average received power), the remaining SARs may be identified but are not limited. Other communicating entities may add the remaining SAR to the overall SAR margin for that communication.

For example, a communication entity operating in peak-power mode may transfer the amount of SAR remaining after use for a certain period of time to another communication entity. For example, another communicating entity that has received the relevant information may add the remaining SAR received to the overall SAR margin for that communication.

An electronic device according to an embodiment of the present disclosure includes a Wi-Fi module for Wi-Fi communication and at least one communication processor for cellular communication, wherein the at least one communication processor is configured to operate when the Wi-Fi module is turned off. Based on the status being confirmed, the entire SAR margin allocated to the electronic device during the first period may be set to be allocated to the at least one cellular communication.

In the electronic device according to an embodiment of the present disclosure, based on the fact that the Wi-Fi module is in an on state and the value of accumulated SAR consumed by the Wi-Fi module is confirmed to be less than or equal to a threshold, It may be set to allocate a first amount of the SAR margin to the Wi-Fi communication, and allocate the remainder excluding the first amount to the at least one cellular communication.

In the electronic device according to an embodiment of the present disclosure, based on the fact that the Wi-Fi module is in an on state and the value of accumulated SAR consumed by the Wi-Fi module is confirmed to be greater than the threshold, during the first period An electronic device may be proposed that allocates a second amount greater than the first amount among the allocated SAR margins to the Wi-Fi communication, and allocates the remainder excluding the second amount to the at least one cellular communication.

In an electronic device according to an embodiment of the present disclosure, the at least one communication processor may check whether a voice call (VoWiFi) operation of the Wi-Fi communication is performed.

In the electronic device according to an embodiment of the present disclosure, when a voice call operation of the Wi-Fi communication is performed, the at least one communication processor It may be set to allocate three amounts to the Wi-Fi communication, and allocate the remaining amount excluding the third amount to the at least one cellular communication.

In an electronic device according to an embodiment of the present disclosure, the at least one communication processor may be configured to check whether a voice call operation of the cellular communication is performed.

In the electronic device according to an embodiment of the present disclosure, when a voice call operation of the cellular communication is performed, the at least one communication processor is greater than the first amount of the SAR margin allocated for the first period and the second amount is greater than the first amount of the SAR margin allocated for the first period. It may be set to allocate a fourth amount smaller than 2 amounts to the Wi-Fi communication, and allocate the remaining amount excluding the fourth amount to the at least one cellular communication.

In an electronic device according to an embodiment of the present disclosure, the at least one communication processor determines whether the value of accumulated SAR consumed by the Wi-Fi module exceeds a first threshold, and determines whether the value of accumulated SAR consumed by the Wi-Fi module exceeds the first threshold. In this case, it can be set to allocate the 1-1 amount to the Wi-Fi communication.

In an electronic device according to an embodiment of the present disclosure, the at least one communication processor determines whether a value of accumulated SAR consumed by the Wi-Fi module exceeds a second threshold that is greater than the first threshold, When the second threshold is exceeded, the 1-2 amount greater than the 1-1 amount may be allocated to the Wi-Fi communication.

In the electronic device according to an embodiment of the present disclosure, when the at least one communication processor confirms that a voice call operation of the Wi-Fi communication is not performed and a voice call operation of the cellular communication is performed, during the first period Of the allocated SAR margins, a fourth amount greater than the first amount and smaller than the second amount may be allocated to the Wi-Fi communication, and the remainder excluding the fourth amount may be set to allocate to the at least one cellular communication. there is.

In an electronic device according to an embodiment of the present disclosure, the at least one communication processor When the cellular communication is performed intermittently, the allocation of SAR margin for the cellular communication may be set to be small.

In an electronic device according to an embodiment of the present disclosure, the at least one communication processor It may be set to allocate the total amount of the SAR margin during the first period to the cellular communication and the Wi-Fi communication at a certain ratio.

In an electronic device according to an embodiment of the present disclosure, the constant rate may be adjusted to a rate corresponding to a specific event confirmed by the electronic device.

In an electronic device according to an embodiment of the present disclosure, at least one of the cellular communication and the Wi-Fi communication may support a Time average SAR operation.

In an electronic device according to an embodiment of the present disclosure, the at least one communication processor Before backing off using the SAR margin allocated within the first period in one of the cellular communication and the Wi-Fi communication, request a remaining SAR margin in the other one of the cellular communication and the Wi-Fi communication can be set.

In an electronic device according to an embodiment of the present disclosure, Wi-Fi communication and cellular communication can be performed.

In a method of an electronic device according to an embodiment of the present disclosure, based on confirmation that Wi-Fi communication is not performed, an operation of allocating the entire SAR margin allocated to the electronic device during a first period to cellular communication is performed. can do.

In the method of an electronic device according to an embodiment of the present disclosure, performing the Wi-Fi communication, based on confirming that the value of accumulated SAR consumed by performing the Wi-Fi communication is less than or equal to a threshold value, during the first period An operation of allocating a first amount of the allocated SAR margin to the Wi-Fi communication and allocating the remaining amount excluding the first amount to the cellular communication may be performed.

In a method of an electronic device according to an embodiment of the present disclosure, performing the Wi-Fi communication, and based on confirming that the value of accumulated SAR consumed by performing the Wi-Fi communication is greater than the threshold, the first It may include the operation of allocating a second amount greater than the first amount among the SAR margins allocated for a period to the Wi-Fi communication, and allocating the remainder excluding the second amount to the cellular communication.

In a method of an electronic device according to an embodiment of the present disclosure, It is possible to check whether the voice call (VoWiFi) operation of the Wi-Fi communication is performed.

In the method of an electronic device according to an embodiment of the present disclosure, when a voice call operation of the Wi-Fi communication is performed, a third amount greater than the second amount among the SAR margins allocated for the first period is used by the Wi-Fi. It may further include allocating to Pi communication and allocating the remaining amount excluding the third amount to the at least one cellular communication.

In a method of an electronic device according to an embodiment of the present disclosure, It is possible to check whether the voice call operation of the cellular communication is being performed.

In the method of an electronic device according to an embodiment of the present disclosure, when a voice call operation of the cellular communication is performed, a second SAR margin allocated for the first period is greater than the first amount and is smaller than the second amount. The method may further include allocating four amounts to the Wi-Fi communication and allocating the remaining amount excluding the fourth amount to the at least one cellular communication.

In the method of an electronic device according to an embodiment of the present disclosure, confirming that the value of the accumulated SAR consumed in the Wi-Fi communication is greater than the threshold means that the value of the accumulated SAR consumed in the Wi-Fi communication is greater than the first threshold. It may include an operation of checking whether the value exceeds the value, and allocating the 1-1 amount to the Wi-Fi communication if it exceeds the first threshold.

In a method of an electronic device according to an embodiment of the present disclosure, determining whether the value of the accumulated SAR consumed in the Wi-Fi communication is greater than the first threshold value is greater than the second threshold value, and determining the second threshold value. If it exceeds, it may include an operation of allocating the 1-2 amount, which is larger than the 1-1 amount, to the Wi-Fi communication.

In a method of an electronic device according to an embodiment of the present disclosure, When it is confirmed that a voice call operation of the Wi-Fi communication is not performed and a voice call operation of the cellular communication is performed, a first amount greater than the first amount and smaller than the second amount among the SAR margins allocated for the first period An operation of allocating four amounts to the Wi-Fi communication and allocating the remaining amount excluding the fourth amount to the at least one cellular communication may be performed.

In a method of an electronic device according to an embodiment of the present disclosure, When the cellular communication is performed intermittently, the SAR margin for the cellular communication may be allocated less.

In a method of an electronic device according to an embodiment of the present disclosure, An operation may be performed to allocate the total amount of the SAR margin during the first period to the cellular communication and the Wi-Fi communication at a certain ratio.

In a method of an electronic device according to an embodiment of the present disclosure, an operation of adjusting the certain ratio to a ratio corresponding to a specific event confirmed by the electronic device may be further performed.

In a method of an electronic device according to an embodiment of the present disclosure, at least one of the cellular communication and the Wi-Fi communication may support a Time average SAR operation.

In a method of an electronic device according to an embodiment of the present disclosure, Before backing off using the SAR margin allocated within the first period in one of the cellular communication and the Wi-Fi communication, requesting a remaining SAR margin in the other one of the cellular communication and the Wi-Fi communication The action can be performed.

Claims (19)

In electronic devices,
Wi-Fi module for Wi-Fi communication; and
comprising at least one communication processor for at least one cellular communication,
The at least one communication processor:
Based on determining that the Wi-Fi module is in an off state, allocate the entire SAR margin allocated for the first period for the electronic device to the at least one cellular communication,
Based on the fact that the Wi-Fi module is in an on state and the value of the accumulated SAR consumed by the Wi-Fi module is confirmed to be less than or equal to a threshold, a first amount of the SAR margin allocated for the first period is used to communicate with the Wi-Fi communication and allocate the remainder except the first amount to the at least one cellular communication,
The Wi-Fi module is in an on state, and based on determining that the value of accumulated SAR consumed by the Wi-Fi module is greater than the threshold, the SAR margin allocated for the first period is greater than the first amount. An electronic device that allocates a second amount to the Wi-Fi communication and allocates the remainder excluding the second amount to the at least one cellular communication. 2. The method of claim 1, wherein the at least one communication processor:
Check whether the voice call (VoWiFi) operation of the Wi-Fi communication is performed,
When a voice call operation of the Wi-Fi communication is performed, a third amount greater than the second amount among the SAR margins allocated during the first period is allocated to the Wi-Fi communication, and the remainder excluding the third amount is allocated to the Wi-Fi communication. An electronic device for assigning to the at least one cellular communication. 3. The method of claims 1-2, wherein the at least one communication processor:
Check whether a voice call operation of the cellular communication is performed,
When a voice call operation of the cellular communication is performed, a fourth amount greater than the first amount and smaller than the second amount among the SAR margins allocated during the first period is allocated to the Wi-Fi communication, and the fourth amount is An electronic device for allocating the remainder to the at least one cellular communication. The method of claims 1 to 3, wherein determining, by the at least one communication processor, that the value of accumulated SAR consumed by the Wi-Fi module is greater than the threshold includes:
Check whether the value of accumulated SAR consumed by the Wi-Fi module exceeds a first threshold, and if it exceeds the first threshold, allocate the 1-1 amount to the Wi-Fi communication,
Check whether the value of accumulated SAR consumed by the Wi-Fi module exceeds a second threshold greater than the first threshold, and if it exceeds the second threshold, determine whether the value of the accumulated SAR consumed by the Wi-Fi module is greater than the first amount 1-1. -2 An electronic device that allocates the amount to the Wi-Fi communication. 5. The method of claims 1-4, wherein the at least one communication processor:
When it is confirmed that a voice call operation of the Wi-Fi communication is not performed and a voice call operation of the cellular communication is performed, a first amount greater than the first amount and smaller than the second amount among the SAR margins allocated for the first period An electronic device that allocates four amounts to the Wi-Fi communication and allocates the remaining amount except the fourth amount to the at least one cellular communication. 6. The method of claims 1-5, wherein the at least one communication processor:
When the cellular communication is performed intermittently, an electronic device that allocates less SAR margin for the cellular communication. 7. The method of claims 1 to 6, wherein the at least one communication processor:
Allocating the total amount of the SAR margin during the first period to the cellular communication and the Wi-Fi communication in a certain ratio,
The constant rate is adjusted to a rate corresponding to a specific event confirmed by the electronic device. The electronic device of claims 1 to 7, wherein at least one of the cellular communication and the Wi-Fi communication supports a Time average SAR operation. 9. The method of claims 1 to 8, wherein the at least one communication processor:
Before backing off using the SAR margin allocated within the first period in one of the cellular communication and the Wi-Fi communication, requesting a remaining SAR margin in the other one of the cellular communication and the Wi-Fi communication Electronic devices. The method of claims 1 to 9,
An electronic device wherein the distance between the first antenna based on cellular communication and the second antenna based on Wi-Fi communication is less than a threshold distance. In a method of an electronic device performing Wi-Fi communication and cellular communication,
Allocating the entire SAR margin allocated to the electronic device during a first period to cellular communication based on confirmation that Wi-Fi communication is not being performed;
Performing the Wi-Fi communication, and based on confirming that the value of the accumulated SAR consumed by performing the Wi-Fi communication is less than or equal to a threshold, a first amount of the SAR margin allocated during the first period is used for the Wi-Fi communication and allocating the remaining amount excluding the first amount to the cellular communication; and
Performing the Wi-Fi communication, and based on confirming that the value of the accumulated SAR consumed by performing the Wi-Fi communication is greater than the threshold, greater than the first amount of the SAR margin allocated for the first period A method comprising allocating a second amount to the Wi-Fi communication and allocating the remainder excluding the second amount to the cellular communication. According to claim 11,
An operation to check whether a voice call (VoWiFi) operation of the Wi-Fi communication is performed; and
When a voice call operation of the Wi-Fi communication is performed, a third amount greater than the second amount among the SAR margins allocated during the first period is allocated to the Wi-Fi communication, and the remainder excluding the third amount is allocated to the Wi-Fi communication. The method further includes assigning to the at least one cellular communication. The method of claims 11 to 12,
An operation to check whether a voice call operation of the cellular communication is performed; and
When a voice call operation of the cellular communication is performed, a fourth amount greater than the first amount and smaller than the second amount among the SAR margins allocated during the first period is allocated to the Wi-Fi communication, and the fourth amount is The method further includes allocating the remainder except the amount to the at least one cellular communication. The method of claims 11 to 13, wherein confirming that the value of accumulated SAR consumed in the Wi-Fi communication is greater than the threshold is performed by:
Checking whether the value of accumulated SAR consumed in the Wi-Fi communication exceeds a first threshold, and allocating the 1-1 amount to the Wi-Fi communication if it exceeds the first threshold; and
Check whether the value of accumulated SAR consumed in the Wi-Fi communication exceeds a second threshold value greater than the first threshold value, and if it exceeds the second threshold value, determine whether the value of the accumulated SAR consumed in the Wi-Fi communication exceeds the second threshold amount greater than the 1-1 amount. 2. A method comprising allocating an amount to the Wi-Fi communication. The method of claims 11 to 14,
When it is confirmed that a voice call operation of the Wi-Fi communication is not performed and a voice call operation of the cellular communication is performed, a first amount greater than the first amount and smaller than the second amount among the SAR margins allocated for the first period Allocating four amounts to the Wi-Fi communication, and allocating the remainder excluding the fourth amount to the at least one cellular communication. The method of claims 11 to 15,
When the cellular communication is performed intermittently, the method further includes allocating less SAR margin for the cellular communication. The method of claims 11 to 16,
Allocating the total amount of the SAR margin during the first period to the cellular communication and the Wi-Fi communication at a certain ratio;
The method further includes adjusting the constant ratio to a ratio corresponding to a specific event confirmed by the electronic device. The method of claims 11 to 17, wherein at least one of the cellular communication and the Wi-Fi communication supports a Time average SAR operation. The method of claims 11 to 18,
Before backing off using the SAR margin allocated within the first period in one of the cellular communication and the Wi-Fi communication, requesting a remaining SAR margin in the other one of the cellular communication and the Wi-Fi communication How to include more actions.