WO2022039543A1 - Dispositif électronique comprenant une antenne et procédé de commande d'une réduction de puissance d'un dispositif électronique - Google Patents

Dispositif électronique comprenant une antenne et procédé de commande d'une réduction de puissance d'un dispositif électronique Download PDF

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Publication number
WO2022039543A1
WO2022039543A1 PCT/KR2021/011088 KR2021011088W WO2022039543A1 WO 2022039543 A1 WO2022039543 A1 WO 2022039543A1 KR 2021011088 W KR2021011088 W KR 2021011088W WO 2022039543 A1 WO2022039543 A1 WO 2022039543A1
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WIPO (PCT)
Prior art keywords
value
electronic device
output power
power
load
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PCT/KR2021/011088
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English (en)
Korean (ko)
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박종호
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삼성전자 주식회사
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Publication of WO2022039543A1 publication Critical patent/WO2022039543A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/3827—Portable transceivers
    • H04B1/3833—Hand-held transceivers
    • H04B1/3838—Arrangements for reducing RF exposure to the user, e.g. by changing the shape of the transceiver while in use
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/3827—Portable transceivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0251—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity
    • H04W52/0254—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity detecting a user operation or a tactile contact or a motion of the device
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/38—TPC being performed in particular situations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • Embodiments disclosed in this document relate to an electronic device having an antenna to communicate with the outside, and a method for controlling power back-off according to an operation of an antenna of the electronic device.
  • an electronic device having an antenna such as a smart phone or a wearable device
  • the electronic device may receive or transmit a signal including data (eg, a message, photo, video, music file, or game) using an antenna.
  • the total radiated power (TRP) of the antenna may vary depending on the user's grip on the device, connection with an external electronic device through a wired connection terminal, etc.).
  • the terminal In the case of wireless communication, there is a need to meet certain regulatory conditions.
  • the terminal In the case of a wireless mobile terminal, the terminal is used in close contact with the face, head, or body. In this case, a part of RF (radiofrequency) energy radiated by the wireless mobile terminal is absorbed into the body, and the absorbed energy is converted into thermal energy in the body.
  • RF radiofrequency
  • electromagnetic waves generated by a wireless mobile terminal may have a negative effect on the human body, so it is necessary to limit the extent to which the human body is exposed to radio waves when a wireless mobile terminal that transmits a wireless communication signal approaches the human body.
  • SAR specific absorption rate
  • the SAR value refers to the quantity absorbed as heat energy per unit mass, per unit time, and the unit is W/kg.
  • Power backoff may be performed in a manner that reduces power input or fed to the antenna module in consideration of a standard for electromagnetic waves emitted from the electronic device.
  • an object of the present disclosure is to provide an electronic device that controls a power back-off value in consideration of a network environment and a state of the electronic device.
  • An electronic device includes a grip sensor, an antenna configured to transmit/receive a signal of a specific frequency band, the grip sensor and a communication processor operatively connected to the antenna, and a communication processor operatively connected to the communication processor a signal coupled from a radio frequency coupler (radio frequency coupler) connected to the communication processor as the communication processor identifies a grip for the electronic device through the grip sensor when the memory is executed Measuring a first amplitude and a first phase of , calculating a first I value and a first Q value based on the first magnitude and the first phase, Identifies a first output power value that is a reference output power value in a table, and identifies a second output power value corresponding to the first I value and the second Q value in the I ⁇ Q table, and the first output power value
  • a radio frequency coupler connected to a communication processor of the electronic device (radio frequency coupler) Measuring a first amplitude and a first phase of a signal coupled from ), calculating a first I value and a first Q value based on the first magnitude and the first phase, and A first output power value that is a reference output power value is identified from an I ⁇ Q table stored in the memory of the electronic device, and a second output power value corresponding to the first I value and the second Q value is obtained from the I ⁇ Q table.
  • one or more instructions for identifying, obtaining a back-off correction value by subtracting the second output power value from the first output power value, and outputting an RF signal with second power obtained by applying the back-off correction value to the first power can be saved
  • FIG. 1 is a block diagram of an electronic device in a network environment, according to various embodiments of the present disclosure
  • FIG. 2 is a block diagram schematically illustrating a configuration included in an electronic device according to an exemplary embodiment.
  • FIG. 3 is a flowchart illustrating an operation of an electronic device according to an exemplary embodiment.
  • FIG. 4 is a diagram illustrating a first table stored in an electronic device according to an exemplary embodiment.
  • FIG. 5 is a block diagram schematically illustrating a configuration included in an electronic device according to an exemplary embodiment.
  • FIG. 6 is a flowchart illustrating an operation of the electronic device 101 according to an exemplary embodiment.
  • 7 may be a diagram illustrating a total radiated power gain value for each case of an electronic device according to an exemplary embodiment in a second table.
  • FIG. 8 is a graph illustrating an I ⁇ Q table stored in an electronic device on a complex plane to explain an operation of the electronic device according to an exemplary embodiment.
  • FIG. 1 is a block diagram of an electronic device 101 in a network environment 100 according to various embodiments.
  • an electronic device 101 communicates with an electronic device 102 through a first network 198 (eg, a short-range wireless communication network) or a second network 199 . It may communicate with the electronic device 104 or the server 108 through (eg, a long-distance wireless communication network). According to an embodiment, the electronic device 101 may communicate with the electronic device 104 through the server 108 .
  • a first network 198 eg, a short-range wireless communication network
  • a second network 199 e.g., a second network 199
  • the electronic device 101 may communicate with the electronic device 104 through the server 108 .
  • the electronic device 101 includes a processor 120 , a memory 130 , an input module 150 , a sound 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 an antenna module 197 may be included.
  • 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 .
  • some of these components are integrated into one component (eg, display module 160 ). can be
  • the processor 120 for example, executes software (eg, a program 140) to execute at least one other component (eg, a hardware or software component) of the electronic device 101 connected to the processor 120 . It can control and perform various data processing or operations. According to one embodiment, as at least part of data processing or operation, the processor 120 converts commands or data received from other components (eg, the sensor module 176 or the communication module 190 ) to the volatile memory 132 . may be stored in the volatile memory 132 , and may process commands or data stored in the volatile memory 132 , and store the result data in the non-volatile memory 134 .
  • software eg, a program 140
  • the processor 120 converts commands or data received from other components (eg, the sensor module 176 or the communication module 190 ) to the volatile memory 132 .
  • the volatile memory 132 may be stored in the volatile memory 132 , and may process commands or data stored in the volatile memory 132 , and store the result data in the non-volatile memory 134 .
  • the processor 120 is the main processor 121 (eg, a central processing unit or an application processor) or a secondary processor 123 (eg, a graphic processing unit, a neural network processing unit) a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor).
  • the main processor 121 e.g, a central processing unit or an application processor
  • a secondary processor 123 eg, a graphic processing unit, a neural network processing unit
  • NPU neural processing unit
  • an image signal processor e.g., a sensor hub processor, or a communication processor.
  • the main processor 121 e.g, a central processing unit or an application processor
  • a secondary processor 123 eg, a graphic processing unit, a neural network processing unit
  • NPU neural processing unit
  • an image signal processor e.g., a sensor hub processor, or a communication processor.
  • the main processor 121 e.g, a central processing unit or an application processor
  • a secondary processor 123
  • the auxiliary processor 123 is, for example, on behalf of the main processor 121 while the main processor 121 is in an inactive (eg, sleep) state, or the main processor 121 is active (eg, executing an application). ), together with the main processor 121, at least one of the components of the electronic device 101 (eg, the display module 160, the sensor module 176, or the communication module 190) It is possible to control at least some of the related functions or states.
  • the co-processor 123 eg, an image signal processor or a communication processor
  • may be implemented as part of another functionally related component eg, the camera module 180 or the communication module 190. there is.
  • the auxiliary processor 123 may include a hardware structure specialized for processing an artificial intelligence model.
  • Artificial intelligence models can be created through machine learning. Such learning may be performed, for example, in the electronic device 101 itself on which artificial intelligence is performed, or may be performed through a separate server (eg, the server 108).
  • the learning algorithm may include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but in the above example not limited
  • the artificial intelligence model may include a plurality of artificial neural network layers.
  • Artificial neural networks include deep neural networks (DNNs), convolutional neural networks (CNNs), recurrent neural networks (RNNs), restricted boltzmann machines (RBMs), deep belief networks (DBNs), bidirectional recurrent deep neural networks (BRDNNs), It may be one of deep Q-networks or a combination of two or more of the above, but is not limited to the above example.
  • the artificial intelligence model may include, in addition to, or alternatively, a software structure in addition to the hardware structure.
  • the memory 130 may store various data used by at least one component of the electronic device 101 (eg, the processor 120 or the sensor module 176 ).
  • the data may include, for example, input data or output data for software (eg, the program 140 ) and instructions related thereto.
  • the memory 130 may include a volatile memory 132 or a 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 an application 146 .
  • the input module 150 may receive a command or data to be used in a component (eg, the processor 120 ) of the electronic device 101 from the outside (eg, a user) of the electronic device 101 .
  • the input module 150 may include, for example, a microphone, a mouse, a keyboard, a key (eg, a button), or a digital pen (eg, a stylus pen).
  • the sound output module 155 may output a sound signal to the outside of the electronic device 101 .
  • the sound output module 155 may include, for example, a speaker or a receiver.
  • the speaker can be used for general purposes such as multimedia playback or recording playback.
  • the receiver may be used to receive an incoming call. According to one embodiment, the receiver may be implemented separately from or as part of the speaker.
  • the display module 160 may visually provide information to the outside (eg, a user) of the electronic device 101 .
  • the display module 160 may include, for example, a control circuit for controlling a display, a hologram device, or a projector and a corresponding device.
  • the display module 160 may include a touch sensor configured to sense a touch or a pressure sensor configured to measure the intensity of a force generated by the touch.
  • the audio module 170 may convert a sound into an electric signal or, conversely, convert an electric signal into a sound. According to an embodiment, the audio module 170 acquires a sound through the input module 150 , or an external electronic device (eg, a sound output module 155 ) connected directly or wirelessly with the electronic device 101 . A sound may be output through the electronic device 102 (eg, a speaker or headphones).
  • an external electronic device eg, a sound output module 155
  • a sound may be output through the electronic device 102 (eg, a speaker or headphones).
  • the sensor module 176 detects an operating state (eg, power or temperature) of the electronic device 101 or an external environmental state (eg, user state), and generates an electrical signal or data value corresponding to the sensed state. can do.
  • the sensor module 176 may include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, It may include a temperature sensor, a humidity sensor, or an illuminance sensor.
  • the interface 177 may support one or more designated protocols that may be used by the electronic device 101 to directly or wirelessly connect with an external electronic device (eg, the electronic device 102 ).
  • 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.
  • HDMI high definition multimedia interface
  • USB universal serial bus
  • SD card interface Secure Digital Card
  • 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 ).
  • 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 may convert an electrical signal into a mechanical stimulus (eg, vibration or movement) or an electrical stimulus that the user can perceive through tactile or kinesthetic sense.
  • the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulation device.
  • the camera module 180 may capture still images and moving images. According to an embodiment, the camera module 180 may include one or more lenses, image sensors, image signal processors, or flashes.
  • the power management module 188 may manage power supplied to the electronic device 101 .
  • the power management module 188 may be implemented as, for example, at least a part of a power management integrated circuit (PMIC).
  • PMIC power management integrated circuit
  • the battery 189 may supply power to at least one component of the electronic device 101 .
  • battery 189 may include, for example, a non-rechargeable primary cell, a rechargeable secondary cell, or a fuel cell.
  • the communication module 190 is a direct (eg, wired) communication channel or a wireless communication channel between the electronic device 101 and an external electronic device (eg, the electronic device 102, the electronic device 104, or the server 108). It can support establishment and communication performance through the established communication channel.
  • the communication module 190 may include one or more communication processors that operate independently of the processor 120 (eg, an application processor) and support direct (eg, wired) communication or wireless communication.
  • the communication module 190 is a wireless communication module 192 (eg, 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 (eg, : It may include a LAN (local area network) communication module, or a power line communication module).
  • GNSS global navigation satellite system
  • a corresponding communication module among these communication modules is a first network 198 (eg, a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network 199 (eg, legacy It may communicate with the external electronic device 104 through a cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (eg, a telecommunication network such as a LAN or a WAN).
  • a first network 198 eg, a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)
  • a second network 199 eg, legacy It may communicate with the external electronic device 104 through a cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (eg, a telecommunication network such as a LAN or a WAN).
  • a telecommunication network
  • the wireless communication module 192 uses the subscriber information (eg, 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 may be identified or authenticated.
  • the wireless communication module 192 may support a 5G network after a 4G network and a next-generation communication technology, for example, a new radio access technology (NR).
  • NR access technology includes 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)).
  • eMBB enhanced mobile broadband
  • mMTC massive machine type communications
  • URLLC ultra-reliable and low-latency
  • the wireless communication module 192 may support a high frequency band (eg, mmWave band) to achieve a high data rate, for example.
  • a high frequency band eg, mmWave band
  • the wireless communication module 192 includes various technologies for securing performance in a high-frequency band, for example, beamforming, massive multiple-input and multiple-output (MIMO), all-dimensional multiplexing. It may support technologies such as full dimensional MIMO (FD-MIMO), an array antenna, analog beam-forming, or a large scale antenna.
  • the wireless communication module 192 may support various requirements specified in the electronic device 101 , an external electronic device (eg, the electronic device 104 ), or a network system (eg, the second network 199 ).
  • the wireless communication module 192 may include a peak data rate (eg, 20 Gbps or more) for realizing eMBB, loss coverage (eg, 164 dB or less) for realizing mMTC, or U-plane latency for realizing URLLC ( Example: downlink (DL) and uplink (UL) each 0.5 ms or less, or round trip 1 ms or less).
  • a peak data rate eg, 20 Gbps or more
  • loss coverage eg, 164 dB or less
  • U-plane latency for realizing URLLC
  • the antenna module 197 may transmit or receive a signal or power to the outside (eg, an external electronic device).
  • the antenna module 197 may include an antenna including a conductor formed on a substrate (eg, a PCB) or a radiator formed of a conductive pattern.
  • 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 from the plurality of antennas by, for example, the communication module 190 . can be selected. A signal or power may be transmitted or received between the communication module 190 and an external electronic device through the selected at least one antenna.
  • other components eg, a radio frequency integrated circuit (RFIC)
  • RFIC radio frequency integrated circuit
  • the antenna module 197 may form a mmWave antenna module.
  • the mmWave antenna module comprises a printed circuit board, an RFIC disposed on or adjacent to a first side (eg, bottom side) of the printed circuit board and capable of supporting a designated high frequency band (eg, mmWave band); and a plurality of antennas (eg, an array antenna) disposed on or adjacent to a second side (eg, top or side) of the printed circuit board and capable of transmitting or receiving signals of the designated high frequency band. can do.
  • peripheral devices eg, a bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)
  • GPIO general purpose input and output
  • SPI serial peripheral interface
  • MIPI mobile industry processor interface
  • the command 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 the same as or different from the electronic device 101 .
  • all or a part of operations executed in the electronic device 101 may be executed in one or more external electronic devices 102 , 104 , or 108 .
  • the electronic device 101 may perform the function or service itself instead of executing the function or service itself.
  • one or more external electronic devices may be requested to perform at least a part of the function or the service.
  • One or more external electronic devices that have received the request may execute at least a part of the requested function or service, or an additional function or service related to the request, and transmit a result of the execution to the electronic device 101 .
  • the electronic device 101 may process the result as it is or additionally and provide it as at least a part of a response to the request.
  • cloud computing distributed computing, mobile edge computing (MEC), or client-server computing technology may be used.
  • the electronic device 101 may provide an ultra-low latency service using, for example, distributed computing or mobile edge computing.
  • 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.
  • the external electronic device 104 or the server 108 may be included in the second network 199 .
  • the electronic device 101 may be applied to an intelligent service (eg, smart home, smart city, smart car, or health care) based on 5G communication technology and IoT-related technology.
  • the electronic device may have various types of devices.
  • the electronic device may include, for example, a portable communication device (eg, a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance device.
  • a portable communication device eg, a smart phone
  • a computer device e.g., a smart phone
  • a portable multimedia device e.g., a portable medical device
  • a camera e.g., a portable medical device
  • a camera e.g., a portable medical device
  • a camera e.g., a portable medical device
  • a wearable device e.g., a smart bracelet
  • a home appliance device e.g., a home appliance
  • first, second, or first or second may be used simply to distinguish the element from other elements in question, and may refer to elements in other aspects (e.g., importance or order) is not limited. It is said that one (eg, first) component is “coupled” or “connected” to another (eg, second) component, with or without the terms “functionally” or “communicatively”. When referenced, it means that one component can be connected to the other component directly (eg by wire), wirelessly, or through a third component.
  • module used in various embodiments of this document may include a unit implemented in hardware, software, or firmware, and is interchangeable with terms such as, for example, logic, logic block, component, or circuit.
  • a module may be an integrally formed part or a minimum unit or a part of the part that performs one or more functions.
  • the module may be implemented in the form of an application-specific integrated circuit (ASIC).
  • ASIC application-specific integrated circuit
  • one or more instructions stored in a storage medium may be implemented as software (eg, the program 140) including
  • a processor eg, processor 120
  • a device eg, electronic device 101
  • the one or more instructions may include code generated by a compiler or code executable by an interpreter.
  • the device-readable storage medium may be provided in the form of a non-transitory storage medium.
  • 'non-transitory' only means that the storage medium is a tangible device and does not include a signal (eg, electromagnetic wave), and this term is used in cases where data is semi-permanently stored in the storage medium and It does not distinguish between temporary storage cases.
  • a signal eg, electromagnetic wave
  • the method according to various embodiments disclosed in this document may be provided as included in a computer program product.
  • Computer program products may be traded between sellers and buyers as commodities.
  • the computer program product is distributed in the form of a machine-readable storage medium (eg compact disc read only memory (CD-ROM)), or via an application store (eg Play StoreTM) or on two user devices ( It can be distributed (eg downloaded or uploaded) directly between smartphones (eg: smartphones) and online.
  • a part of the computer program product may be temporarily stored or temporarily created in a machine-readable storage medium such as a memory of a server of a manufacturer, a server of an application store, or a relay server.
  • each component (eg, module or program) of the above-described components may include a singular or a plurality of entities, and some of the plurality of entities may be separately disposed in other components. there is.
  • one or more components or operations among the above-described corresponding components may be omitted, or one or more other components or operations may be added.
  • a plurality of components eg, a module or a program
  • the integrated component may perform one or more functions of each component of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. .
  • operations performed by a module, program, or other component are executed sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations are executed in a different order, or omitted. or one or more other operations may be added.
  • FIG. 2 is a block diagram 200 schematically illustrating a configuration included in the electronic device 101 according to an exemplary embodiment.
  • 3 is a flowchart 300 illustrating an operation of the electronic device 101 according to an exemplary embodiment.
  • 4 is a diagram illustrating a first table 400 stored in the electronic device 101 according to an exemplary embodiment. Descriptions of the same components as those of the above-described embodiment may be referred to by the same reference numerals.
  • the wireless communication module 192 of the electronic device 101 includes a communication processor 201 , a power amplifier 202 , an RF coupler 203 , and a load controller. 204 , and a power meter 205 .
  • the communication processor 201 of the electronic device 101 may output an RF signal with a constant frequency and constant power.
  • the communication processor 201 may perform a function of controlling a communication module (eg, the communication module 190 of FIG. 1 ) of the electronic device 101 .
  • the power amplifier 202 of the electronic device 101 may receive an RF signal from the communication processor 201 , amplify the received RF signal, and transmit it to the RF coupler 203 .
  • the load controller 204 of the electronic device 101 may control the load of the wireless communication module 192 with an arbitrary load value.
  • the load controller 204 may control the load of the wireless communication module 192 for a simulation for forming an I ⁇ Q table (eg, the first table 400 of FIG. 4 ).
  • the I ⁇ Q table may be a table in which an output power value of an RF signal with respect to a specific load value is mapped and stored. A detailed description of the I ⁇ Q table will be described later.
  • the initial load value of the wireless communication module 192 may be a reference load value determined when the wireless communication module 192 is designed.
  • the reference load value may be 50 ohms ( ⁇ ), but is not limited thereto.
  • the load controller 204 may control the load value of the wireless communication module 192 to be maintained as a reference load value when operation 302 is first performed in the process of the flowchart 300 of FIG. 3 . Next, whenever operation 302 returns, the load controller 204 may change the load of the wireless communication module 192 from a reference load value to an arbitrary load value.
  • an arbitrary load value controlled by the load controller 204 in operation 302 may be a load value applicable to the wireless communication module 192 in an actual use environment of the electronic device 101 .
  • the communication processor 201 of the electronic device 101 may be coupled from the RF coupler 203 to acquire amplitude and phase of a received signal.
  • the communication processor 201 of the electronic device 101 may obtain by measuring the amplitude and the phase of the signal sampled using the coupling from the RF coupler 203 .
  • the communication processor 201 of the electronic device 101 may obtain an I value and a Q value based on the magnitude and the phase obtained in operation 303 .
  • the communication processor 201 of the electronic device 101 may calculate and obtain the I value and the Q value based on the magnitude and the phase obtained in operation 303 .
  • the I value may be calculated as A*cos( ⁇ ) and the Q value may be calculated as A*sin( ⁇ ).
  • A may indicate the magnitude acquired in operation 303
  • ⁇ may indicate the phase acquired in operation 303.
  • the power meter 205 of the electronic device 101 receives the signal passing through the RF coupler 203 . It can measure the output power (dBm). According to an embodiment, when the load of the wireless communication module 192 is the reference load value, the output power value measured by the power meter 205 may be referred to as a reference output power value. According to an embodiment, the power meter 205 may transmit the measured output power value to the communication processor 201 .
  • the communication processor 201 of the electronic device 101 may form an I ⁇ Q table based on the obtained I value, Q value, and output power value.
  • the I ⁇ Q table may be a table in which the I and Q values obtained when the communication processor 201 is a specific load are mapped to an output power value.
  • the first table 400 of FIG. 4 may be an example of an I ⁇ Q table.
  • the communication processor 201 includes an I value obtained by the communication processor 201 when the load controller 204 controls the initial load value of the wireless communication module 192 as an arbitrary reference value;
  • the first table 400 of FIG. 4 may be formed by mapping the Q value and the output power value with the index 1 .
  • the load controller 204 controls the initial load value of the wireless communication module 192 to 50 ohm ( ⁇ )
  • the I value obtained by the communication processor 201 is 0, the Q value is 0,
  • the output power value may be 24.5 dBm.
  • the communication processor 201 maps the I value, the Q value, and the output power value first obtained in the process of the flowchart 300 of FIG. 3 with the index 1 to form the first table 400 of FIG. 4 . can do.
  • the electronic device 101 may store the formed I ⁇ Q table in the memory of the electronic device 101 (eg, the memory 130 of FIG. 1 ).
  • the communication processor 201 may determine whether the processes from operations 302 to 306 are repeated n times.
  • n may be any predetermined integer.
  • the communication processor 201 may terminate the process when the processes from operations 302 to 306 are repeated n times, and return to operation 302 when the processes from operations 302 to 306 are repeated less than n times. You can run the process again. For example, when the first table 400 of FIG.
  • the communication processor 201 may end the process of the flowchart 300 of FIG. 3 when the addition of the index 25 to the first table 400 of FIG. 4 is completed.
  • the first table 400 of FIG. 4 performs the process of the flowchart 300 of FIG. 3 for any one of the frequency bands of 5G, LTE, and legacy communication defined by 3GPP. could be the result.
  • the electronic device 101 may form one I/Q table per one frequency band among frequency bands of 5G, LTE, and legacy communication defined by 3GPP.
  • the electronic device 101 may form an I ⁇ Q table for at least one of the frequency bands of 5G, LTE, and legacy communication defined by 3GPP and store it in the memory. Accordingly, the electronic device 101 may store and form a plurality of I ⁇ Q tables.
  • the electronic device 101 may form an I ⁇ Q table corresponding to a frequency band supported by the electronic device 101 and store it in the memory.
  • FIG. 5 is a block diagram 500 schematically illustrating a configuration included in the electronic device 101 according to an exemplary embodiment.
  • 6 is a flowchart 600 illustrating an operation of the electronic device 101 according to an exemplary embodiment. Descriptions of the same components as those of the above-described embodiment may be referred to with the same reference numerals, and descriptions thereof may be omitted.
  • the wireless communication module 192 of the electronic device 101 includes a communication processor 201 , a power amplifier 202 , an RF coupler 203 , an antenna matching 501 , and an antenna. 502 may be included.
  • the antenna 502 is illustrated as being included in the wireless communication module 192 in FIG. 5 , it may be included in the antenna module (eg, the antenna module 197 of FIG. 1 ) as described with reference to FIG. 1 .
  • the wireless communication module 192 of the electronic device 101 makes a call with an external electronic device (eg, the electronic device 104 of FIG. 1 ) through a remote wireless communication network. connection can be established.
  • the communication processor 201 may output the RF signal with the first power.
  • a grip sensor included in a sensor module (eg, the sensor module 176 of FIG. 1 ) of the electronic device 101 may detect a user's grip with respect to the electronic device 101 .
  • the grip sensor may transmit information about the user's grip to the communication processor 201 when the user's grip is sensed.
  • the communication processor 201 sets the SAR measurement value (W/kg) of the electronic device 101 to satisfy the international standard (eg, 2.0 W/kg). 101) may determine that it is necessary to back off the output power of the RF signal in order to reduce the emitted electromagnetic wave.
  • the communication processor 201 may output the RF signal by maintaining the first power without back-off.
  • the communication processor 201 of the electronic device 101 couples the RF signal from the RF coupler 203 and receives the amplitude (amplitude) of the signal. ) and a phase can be obtained.
  • the communication processor 201 of the electronic device 101 may measure and obtain the magnitude and phase of the sampled signal using coupling from the RF coupler 203 .
  • the wireless communication network Impedance matching of the antenna matcher 501 may be changed according to a change in the environment (eg, carrier aggregation (CA), 4G-5G dual connectivity (ENDC), etc.), and/or the external environment of the electronic device 101 (eg, electronic device)
  • Antenna impedance may be changed according to a change in the user's grip on the device, connection with an external electronic device through a wired connection terminal, etc.).
  • the communication processor 201 of the electronic device 101 is sampled from the RF coupler 203 in order to estimate the total radiated power (TRP) of the antenna 502 according to the changed antenna impedance. You can measure the magnitude and phase of a signal.
  • TRP total radiated power
  • the communication processor 201 of the electronic device 101 may obtain an I value and a Q value based on the magnitude and the phase obtained in operation 604 .
  • the communication processor 201 of the electronic device 101 may calculate and obtain the I value and the Q value based on the magnitude and the phase obtained in operation 604 .
  • the I value may be calculated as A*cos( ⁇ ) and the Q value may be calculated as A*sin( ⁇ ).
  • A may indicate the magnitude acquired in operation 604, and ⁇ may indicate the phase acquired in operation 604.
  • the communication processor 201 of the electronic device 101 may obtain a back-off correction value c based on the I and Q values obtained in operation 605 .
  • the communication processor 201 of the electronic device 101 is configured to retrieve the I ⁇ Q table stored in a memory (eg, the memory 130 of FIG. 1 ) from the I ⁇ Q table.
  • a first output power value that is a reference output power value may be identified.
  • the communication processor 201 may use an I/Q table corresponding to a frequency band currently used for wireless communication among a plurality of I/Q tables stored in a memory (eg, the memory 130 of FIG. 1 ).
  • the first output power value that is the reference output value may be a value obtained by measuring the output power by maintaining the load value of the wireless communication module 192 as the reference load value when forming the I ⁇ Q table in a specific frequency band. there is.
  • the first output power value that is the reference output power value may be an output power value corresponding to when both the I and Q values in the I ⁇ Q table are 0.
  • the first output power value that is the reference output value may be an output power value corresponding to index 1 in the I ⁇ Q table.
  • the communication processor 201 may identify a second output power value corresponding to the I value and the Q value obtained in operation 605 from the I ⁇ Q table. . According to an embodiment, the communication processor 201 may obtain the back-off correction value c by subtracting the identified second output power value from the first output power value that is the reference output power value.
  • the communication processor 201 may output the RF signal as a power value obtained by subtracting the reference back-off value b from the first power and adding the back-off correction value c obtained in operation 606 . That is, the communication processor 201 backs off (-) the first power by a value obtained by subtracting the back-off correction value (c) obtained in operation 606 from the reference back-off value (b) to output the RF signal can do.
  • the reference back-off value (b) affects the radiation power of the electronic device 101 from the outside of the electronic device 101 when the electronic device 101 performs wireless communication in stand-alone (SA).
  • the SAR measurement value by the total radiated power (TRP) of the electronic device 101 may be a value that backs off the output power of the RF signal to satisfy the international standard.
  • the reference back-off value b may be stored in the memory of the electronic device 101 (eg, the memory 130 of FIG. 1 ).
  • the reference back-off value b may be 3 dBm, but is not limited thereto.
  • the communication processor 201 may identify 24.5 dBm, which is the output power value of index 1 of the first table 400, as the first output power value, and 23.5 dBm, which is the output power value of index 11, as the second output power value.
  • a back-off correction value c of 1 dBm may be obtained by subtracting 23.5 dBm, the second output power value, from the first output power value of 24.5 dBm.
  • the communication processor 201 subtracts 1 dBm, the back-off correction value (c), from 3 dBm, the reference back-off value (b), in operation 607. Output power by 2 dBm. It is possible to output an RF signal by back-off. In this case, while the total radiated power (TRP) of the electronic device is improved, the SAR measurement value based on the total radiated power may satisfy international standards.
  • the electronic device 101 may include at least one antenna used for wireless communication through at least one of 5G, LTE, and a legacy network, and the back-off is performed by the electronic device ( 101) may be performed with respect to the RF signal output of the antenna currently used for wireless communication.
  • a threshold value for limiting the back-off correction may be stored in the memory of the electronic device 101 (eg, the memory 130 of FIG. 1 ), and the back-off correction value c is higher than the threshold value. If it is large, a threshold value may be applied as a back-off correction value (c).
  • the SAR measurement value of the electronic device 101 is the SAR international standard ( Example: It may be a value that does not exceed 2.0W/Kg).
  • the threshold value for limiting the back-off correction is, when the back-off correction value exceeds the threshold value, even if the RF signal output power is excessively back-off compensated, the SAR measurement value of the electronic device 101 is the SAR international standard (eg, 2.0 W/Kg).
  • the back-off compensation value (c) so that the SAR measurement value is less than the international standard 2.0W/Kg (eg TRP 15dBm +1.5dBm -> 1.97W/kg) even when the back-off maximum compensation is performed can be determined to be 1.5 dBm.
  • FIG. 7 may be a diagram illustrating a total radiated power gain value for each case of an electronic device according to an exemplary embodiment as a second table 700 .
  • 8 is a graph 800 illustrating an I ⁇ Q table stored in an electronic device on a complex plane to describe an operation of the electronic device according to an exemplary embodiment. Descriptions of the same components as those of the above-described embodiment may be referred to with the same reference numerals, and descriptions thereof may be omitted.
  • an electronic device eg, the electronic device 101 of FIG. 1 performs wireless communication in stand-alone (SA) using the LTE B1 frequency band.
  • SA stand-alone
  • the total radiated power (TRP) may be 19.1 dBm.
  • the reference back-off value b may be 3 dBm.
  • the radiated power of the electronic device is back-off by 3 dBm, so that the total radiated power (TRP) may be 16.1 dBm.
  • the total radiated power (19.1 dBm) and the reference back-off value (3 dBm) may be designed so that the SAR measurement value in the LTE B1 SA wireless communication condition satisfies the international standard. That is, in the LTE B1 SA wireless communication condition, the total radiated power value of 16.1 dBm when the grip is sensed by the electronic device may be the total radiated power value that allows the electronic device to satisfy the international standard for SAR.
  • the total radiated power (TRP) may be 17.7 dBm.
  • the reference back-off value b is 3 dBm
  • the radiated power of the electronic device is back-off by 3 dBm, so that the total radiated power TRP may be 14.7 dBm.
  • the total radiated power value (14.7 dBm) in the LTE B1 (Pcc)_ 8 (Scc)CA wireless communication condition ) can confirm that the total radiated power loss value occurs by 1.4 dBm than the total radiated power value (16.1 dBm) in the LTE B1 SA wireless communication condition. That is, even if the total radiated power is 16.1 dBm, the SAR international standard is satisfied, but in the case of Example 1 in which the back-off correction value (c) is not applied, the back-off excessively causes a loss of 1.4 dBm in the total radiated power. .
  • the electronic device uses the I ⁇ Q table stored in the memory of the electronic device (eg, the memory 130 of FIG. 1 ). can be used to obtain the back-off correction value (c).
  • the graph 800 showing the I ⁇ Q table according to an example on a complex plane for explanation
  • case 1 through the power meter eg, the power meter 205 in FIG. 2
  • It may represent a measured value of the output power of the RF signal.
  • the measured output power value may be 24.1 dBm.
  • the output power value may be a reference power value.
  • Case 2 may represent the measured value of the output power of the RF signal through the power meter in the LTE B1 (Pcc)_8(Scc)CA wireless communication condition.
  • the measured output power value may be 23 dBm.
  • Example 1 in which the back-off correction value (c) is not applied, the total radiated power loss value of 1.4 dBm in the LTE B1 (Pcc)_ 8 (Scc)CA wireless communication condition compared to the LTE B1 SA wireless communication condition occurs.
  • the total radiated power (TRP) when the electronic device performs wireless communication with n78_LTE B1 ENDC and a grip with respect to the electronic device is not detected, the total radiated power (TRP) may be 16.9 dBm.
  • the reference back-off value b is 3 dBm
  • the radiated power of the electronic device is back-off by 3 dBm, so that the total radiated power TRP may be 13.9 dBm.
  • the total radiated power value (13.9 dBm) in the n78_LTE B1 ENDC wireless communication condition is the total radiated power value in the LTE B1 SA wireless communication condition (16.1 dBm)
  • case 3 is a value obtained by measuring the output power of an RF signal through a power meter in the n78_LTE B1 ENDC wireless communication condition can indicate The measured output power value in case 3 may be 22.2 dBm.
  • the electronic device can estimate that the radiated power is reduced by 1.8 dBm in the n78_LTE B1 ENDC wireless communication condition compared to the LTE B1 SA wireless communication condition, do not back off by 1.8 dBm in the n78_LTE B1 ENDC wireless communication condition compared to the LTE B1 SA wireless communication condition because you don't have to.
  • the back-off correction value is obtained and applied in consideration of the wireless communication network condition of the electronic device and the external condition affecting the total radiated power of the electronic device. , it is possible to provide a gain of the total radiated power by implementing the increased total radiated power (TRP) while satisfying the SAR standard.
  • An electronic device includes a grip sensor, an antenna configured to transmit/receive a signal of a specific frequency band, the grip sensor and a communication processor operatively connected to the antenna, and a communication processor operatively connected to the communication processor a signal coupled from a radio frequency coupler (radio frequency coupler) connected to the communication processor as the communication processor identifies a grip for the electronic device through the grip sensor when the memory is executed Measuring a first amplitude and a first phase of , calculating a first I value and a first Q value based on the first magnitude and the first phase, Identifies a first output power value that is a reference output power value in a table, and identifies a second output power value corresponding to the first I value and the second Q value in the I ⁇ Q table, and the first output power value
  • the communication processor when the one or more instructions are executed, the communication processor generates the second power by subtracting the back-off correction value from the reference back-off value stored in the memory from the first power. It may be a back-off power value.
  • the reference back-off value may be a value such that the total radiated power (TRP) of the electronic device satisfies a specific absorption rate (SAR) standard in a stand-alone (SA) environment.
  • TRP total radiated power
  • SAR specific absorption rate
  • the I ⁇ Q table may include information mapped by measuring an I value, a Q value, and an output power value of an RF signal of the communication processor at a specific load. .
  • the I ⁇ Q table includes the first output power value that is a value obtained by measuring the output power value of the RF signal of the communication processor when the load is the initial load value of the electronic device, , I and Q values corresponding to the first output power value may be 0.
  • the communication processor calculates A*cos( ⁇ ) when the measured magnitude is A and the measured phase is ⁇ to calculate the first I A value may be obtained and A*sin( ⁇ ) may be calculated to obtain the second Q value.
  • the I ⁇ Q table may be a table corresponding to the specific frequency band usable by the electronic device.
  • the memory when the electronic device uses a plurality of frequency bands, the memory may be configured to store an I ⁇ Q table corresponding to each of the plurality of frequency bands.
  • a load controller coupled to the RF coupler; and a power meter coupled to the load controller, wherein the one or more instructions, when executed, cause the communication processor to control a load through the load controller. and measuring a second magnitude and a second phase of a signal coupled from the RF coupler when the load is changed, and a second I value and a second Q value based on the second magnitude and the second phase calculating, obtaining a third output power value that is a measured power value of a signal input to the power meter when the load is changed, and mapping the second I value, the second Q value, and the third output power value to the One or more instructions for forming an I ⁇ Q table and storing the formed I ⁇ Q table in the memory may be stored.
  • the one or more instructions when executed, control the load through the load controller until the communication processor obtains a predetermined n number of the third output power value (n is an integer). can make it change.
  • a radio frequency coupler connected to a communication processor of the electronic device (radio frequency coupler) Measuring a first amplitude and a first phase of a signal coupled from ), calculating a first I value and a first Q value based on the first magnitude and the first phase, and A first output power value that is a reference output power value is identified from an I ⁇ Q table stored in the memory of the electronic device, and a second output power value corresponding to the first I value and the second Q value is obtained from the I ⁇ Q table.
  • one or more instructions for identifying, obtaining a back-off correction value by subtracting the second output power value from the first output power value, and outputting an RF signal with second power obtained by applying the back-off correction value to the first power can be saved
  • the second power may be a power value obtained by back-off by a value obtained by subtracting the back-off correction value from the reference back-off value stored in the memory from the first power.
  • the reference back-off value may be a value such that the total radiated power (TRP) of the electronic device satisfies a specific absorption rate (SAR) standard in a stand-alone (SA) environment.
  • TRP total radiated power
  • SAR specific absorption rate
  • the I ⁇ Q table may include information mapped by measuring an I value, a Q value, and an output power value of an RF signal of the communication processor at a specific load. .
  • the I ⁇ Q table includes the first output power value that is a value obtained by measuring the output power value of the RF signal of the communication processor when the load is the initial load value of the electronic device, , I and Q values corresponding to the first output power value may be 0.
  • the measured magnitude is A and the measured phase is ⁇
  • A*cos( ⁇ ) is calculated to obtain the first I value and A*sin( ⁇ ) is calculated
  • the second Q value can be obtained.
  • the I ⁇ Q table may be a table corresponding to the specific frequency band usable by the electronic device.
  • the memory when the electronic device uses a plurality of frequency bands, the memory may be configured to store an I ⁇ Q table corresponding to each of the plurality of frequency bands.
  • a load is controlled through a load controller connected to the RF coupler, and when the load is changed, the communication processor causes a second magnitude and a second phase of a signal coupled from the RF coupler. is measured, the communication processor calculates a second I value and a second Q value based on the second magnitude and the second phase, and measures a signal input to the power meter when the communication processor is the changed load obtains a third output power value that is a power value, the communication processor maps the second I value, the second Q value, and the third output power value to form the I ⁇ Q table, the communication processor The formed I ⁇ Q table may be stored in the memory.
  • the load may be changed through the load controller until a predetermined number of n third output power values (n is an integer) are obtained.

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Abstract

Mémoire d'un dispositif électronique pouvant stocker des instructions qui amènent un processeur de communication à : mesurer une première amplitude et une première phase d'un signal couplé par un coupleur RF (coupleur de radiofréquence), lorsqu'une préhension sur le dispositif électronique est identifiée par le biais d'un capteur de préhension ; calculer une première valeur I et une première valeur Q sur la base de la première amplitude et de la première phase ; identifier une première valeur de puissance de sortie qui constitue une valeur de puissance de sortie de référence, à partir d'une table I•Q stockée dans la mémoire ; identifier une seconde valeur de puissance de sortie correspondant à la première valeur I et à la première valeur Q, à partir de la table I•Q ; obtenir une valeur de correction de réduction par soustraction de la seconde valeur de puissance de sortie de la première valeur de puissance de sortie ; et émettre un signal RF avec une seconde puissance obtenue par application de la valeur de correction de réduction à la première puissance.
PCT/KR2021/011088 2020-08-20 2021-08-20 Dispositif électronique comprenant une antenne et procédé de commande d'une réduction de puissance d'un dispositif électronique WO2022039543A1 (fr)

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WO2023195728A1 (fr) * 2022-04-05 2023-10-12 삼성전자 주식회사 Dispositif électronique et procédé de réduction de consommation de courant
WO2024072030A1 (fr) * 2022-09-26 2024-04-04 삼성전자주식회사 Procédé de commande de configuration d'antenne dans un dispositif électronique comprenant une pluralité d'antennes, et dispositif électronique le prenant en charge

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US20150201387A1 (en) * 2014-01-10 2015-07-16 Microsoft Corporation Radio Frequency (RF) Attenuation Functions for Specific Absorption Rate (SAR) Compliance
KR20180025710A (ko) * 2016-09-01 2018-03-09 삼성전자주식회사 전자 장치 및 이를 이용한 그립 상태를 인식하는 방법
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