WO2022019564A1 - Adaptive transmission signal power adjustment method, and electronic device therefor - Google Patents

Abstract

According to one or more embodiments of the present invention, an electronic device comprises: a digital block which processes an input signal and outputs a base band digital signal; an analog block which converts the base band digital signal into an analog signal and processes the converted analog signal to convert the same into a radio frequency (RF) signal; and an antenna module which amplifies the RF signal and outputs an amplified transmission signal. The digital block can determine whether the output waveform of the transmission signal output through the antenna module is a first waveform or a second waveform, adjust the level of the base band digital signal on the basis of a first backoff value if the output waveform is the first waveform, and adjust the level of the base band digital signal on the basis of a second backoff value if the output waveform is the second waveform. In addition, one or more other embodiments may be possible.

Description

Adaptive transmission signal power adjustment method and electronic device thereof

Various embodiments of the present disclosure relate to a method of adaptively adjusting transmission signal power and an electronic device thereof.

Efforts are being made to commercialize a next-generation (eg, 5th-generation or pre-5G) communication system in order to meet the increasing demand for wireless data traffic after commercialization of the 4G (4th-generation) communication system. For example, the 5G communication system or the pre-5G communication system is called a system after the 4G network (beyond 4G network) or the LTE system (post LTE).

In order to achieve a high data rate, the next-generation communication system may be implemented in a high-frequency band. In order to mitigate the path loss of radio waves and increase the propagation distance of radio waves in the high-frequency band, in the next-generation communication system, beamforming, massive multi-input multi-output (massive MIMO), and all-dimensional multiple input/output ( Full dimensional MIMO: FD-MIMO), array antenna, analog beam-forming, or large scale antenna technologies are being discussed.

In 5G, two different waveforms of discrete fourier transform spread OFDM (DFT-s-OFDM) and cyclic prefix OFDM (CP-OFDM) may be used for uplink communication. In addition, in 5G, various modulation schemes are applied to uplink signals. In spite of different waveforms and/or different modulation schemes, applying the same transmit signal power level may decrease the power of the final output signal or increase the current consumption of the amplifier to increase the power of the final output signal.

An electronic device according to one or more embodiments of the present invention provides a method and an electronic device capable of adjusting the power of a final output signal by adaptively adjusting a transmission signal power level according to different waveforms and/or modulation schemes can do.

According to one or more embodiments of the present disclosure, an electronic device may include: a digital block processing an input signal to output a base band digital signal; an analog block for converting the baseband digital signal into an analog signal and for converting the converted analog signal into a radio frequency (RF) signal; and an antenna module amplifying the RF signal and outputting the amplified transmission signal. The digital block determines whether an output waveform of the transmission signal output through the antenna module is a first waveform or a second waveform, and when the output waveform is the first waveform, the first backoff value is based on the level of the baseband digital signal, and if the output waveform is the second waveform, the level of the baseband digital signal may be adjusted based on a second backoff value.

According to one or more embodiments of the present disclosure, an electronic device may include a communication processor; and a radio frequency integrated circuit (RFIC) connected to the communication processor, wherein the communication processor determines whether an output waveform of a transmission signal output through an antenna is a first waveform or a second waveform, and receives the RFIC control to adjust the level of a baseband digital signal based on a first backoff value if the output waveform is the first waveform, and if the output waveform is the second waveform, adjust the level of the baseband digital signal based on a second backoff value The level of the baseband digital signal may be adjusted.

According to one or more embodiments of the present disclosure, a method of an electronic device may include: determining whether an output waveform of a transmission signal output through an antenna of the electronic device is a first waveform or a second waveform; if the output waveform is the first waveform, adjusting the level of the baseband digital signal based on a first backoff value; and if the output waveform is the second waveform, adjusting the level of the baseband digital signal based on a second backoff value.

The method and the electronic device for adaptive transmission signal power adjustment according to one or more embodiments of the present invention can prevent signal loss by adaptively adjusting the transmission signal power level according to different waveforms and/or modulation schemes. and the power of the final output signal can be adjusted.

A method and an electronic device for adaptive transmission signal power adjustment according to one or more embodiments of the present invention include an amplifier for amplifying a transmission signal power level to a target power level by adjusting the transmission signal power level according to different waveforms and/or modulation schemes. By increasing the efficiency, the current consumption can be reduced.

Effects obtainable in the present disclosure are not limited to the above-mentioned effects, and other effects not mentioned may be clearly understood by those of ordinary skill in the art to which the present disclosure belongs from the description below. will be.

1 is a block diagram of an electronic device in a network environment in one or more embodiments of the present invention.

2 is a block diagram of a communication module supporting communication with a plurality of wireless networks in an electronic device according to one or more embodiments of the present invention.

3 is an example of a configuration of a communication module in an electronic device according to one or more embodiments of the present invention.

4 is another example of a configuration of a communication module in an electronic device according to one or more embodiments of the present invention.

5 is another example of a configuration of a communication module in an electronic device according to one or more embodiments of the present invention.

6 is a graph comparing a peak to average power ratio (PAPR) according to a waveform of a transmission signal of an electronic device according to one or more embodiments of the present disclosure.

7 is a flowchart illustrating an operation for adjusting transmission signal power according to a waveform of a transmission signal of an electronic device according to one or more embodiments of the present disclosure.

8 is a flowchart illustrating an operation for adjusting the power of a transmission signal according to a modulation method in an electronic device according to one or more embodiments of the present invention.

9 is a flowchart illustrating an operation for adjusting the power of a transmission signal according to an output waveform and a modulation method in an electronic device according to one or more embodiments of the present invention.

10 is a diagram for explaining an example of increasing the output power of a transmission signal by adaptive transmission signal power adjustment according to an output waveform according to one or more embodiments of the present invention.

11 is a graph for explaining an example of increasing the output power of a transmission signal by adaptive transmission signal power adjustment according to an output waveform according to one or more embodiments of the present invention.

Hereinafter, one or more embodiments will be described in detail with reference to the accompanying drawings.

1 is a block diagram of an electronic device 101 in a network environment 100 according to various embodiments of the present disclosure. Referring to FIG. 1 , in a network environment 100 , 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 . According to an embodiment, 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. 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 (eg, sensor module 176 , camera module 180 , or antenna module 197 ) 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 . According to an embodiment, 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). For example, when the electronic device 101 includes the main processor 121 and the sub-processor 123 , the sub-processor 123 may use less power than the main processor 121 or may be set to be specialized for a specified function. can The auxiliary processor 123 may be implemented separately from or as a part of the main processor 121 .

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. According to an embodiment, 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). have. According to an embodiment, the auxiliary processor 123 (eg, a neural network processing device) 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. According to an embodiment, 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).

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. According to an embodiment, 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 ). According to an 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 an 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 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. According to an embodiment, 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 . According to an embodiment, the power management module 188 may be implemented as, for example, at least a part of 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, 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. According to one embodiment, 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). 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). These various types of communication modules may be integrated into one component (eg, a single chip) or may be implemented as a plurality of components (eg, multiple chips) separate from each other. 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)). The wireless communication module 192 may support a high frequency band (eg, mmWave band) to achieve a high data rate, for example. 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 ). According to an embodiment, 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).

The antenna module 197 may transmit or receive a signal or power to the outside (eg, an external electronic device). According to an embodiment, 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. According to an 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 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. According to some embodiments, other components (eg, a radio frequency integrated circuit (RFIC)) other than the radiator may be additionally formed as a part of the antenna module 197 .

According to various embodiments, the antenna module 197 may form a mmWave antenna module. According to one embodiment, 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.

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

According to an embodiment, 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 . According to an embodiment, 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 . For example, when the electronic device 101 is to perform a function or service automatically or in response to a request from a user or other device, the electronic device 101 may perform the function or service itself instead of executing the function or service itself. Alternatively or additionally, 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. For this, for example, 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. 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 an embodiment, 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.

In the structure of the electronic device 101 described with reference to FIG. 1 , the communication module 190 may include various hardware components for performing communication. For example, the communication module 190 may include components as shown in any one of FIGS. 2 to 5 below.

2 is a block diagram of a communication module supporting communication with a plurality of wireless networks in the electronic device 101, according to various embodiments of the present disclosure.

Referring to FIG. 2 , the electronic device 101 includes a first communication processor (CP) 212 , a second CP 214 , a first RFIC 222 , a second RFIC 224 , and a third RFIC 226 , a fourth RFIC 228 , a first radio frequency front end (RFFE) 232 , a second RFFE 234 , a first antenna module 242 , a second antenna module ( 244 , and an antenna 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 component among the components illustrated in FIG. 1 , and the second network 199 may further include at least one other network. According to an embodiment, the first CP 212 , the second CP 214 , the first RFIC 222 , the second RFIC 224 , the fourth RFIC 228 , the first RFFE 232 , and the second 2 RFFE 234 may form at least a portion of the wireless communication module 192 . According to another embodiment, the fourth RFIC 228 may be omitted or may be included as a part of the third RFIC 226 .

The first CP 212 may support establishment of a communication channel of 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 292 may be a legacy network including a second generation (2G), 3G, 4G, or long term evolution (LTE) network. The second CP 214 establishes a communication channel corresponding to a designated band (eg, about 6 GHz to about 60 GHz) among bands to be used for wireless communication with the second cellular network 294, and 5G network communication through the established communication channel can support According to various embodiments, the second cellular network 294 may be a 5G network defined by 3GPP. Additionally, according to an embodiment, the first CP 212 or the second CP 214 communicates corresponding to another designated band (eg, about 6 GHz or less) among bands to be used for wireless communication with the second cellular network 294 . It is possible to support the establishment of a channel, and 5G network communication through the established communication channel. According to an embodiment, the first CP 212 and the second CP 214 may be implemented in a single chip or a single package. According to various embodiments, the first CP 212 or the second CP 214 may be formed in a single chip or a single package with the processor 120 , the auxiliary processor 123 , or the communication module 190 . According to an embodiment, the first CP 212 and the second CP 214 are directly or indirectly connected to each other by an interface (not shown) to provide data or control signals in either or both directions. or you can get

The first RFIC 222, at the time of transmission, transmits a baseband (BB) signal generated by the first CP 212 to the first cellular network 292 (eg, a legacy network) of about 700 MHz to It can be converted to a radio frequency (RF) signal of about 3 GHz. Upon reception, an RF signal is obtained from a first cellular network 292 (eg, a legacy network) via an antenna (eg, a first antenna module 242) and receives an RFFE (eg, a first RFFE 232). It can be preprocessed through The first RFIC 222 may convert the pre-processed RF signal into a BB signal to be processed by the first CP 212 .

The second RFIC 224, at the time of transmission, transmits the BB signal generated by the first CP 212 or the second CP 214 to the second cellular network 294 (eg, a 5G network) in the Sub6 band. It can be converted into an RF signal (hereinafter, 5G Sub6 RF signal) of (eg, about 6 GHz or less). Upon reception, a 5G Sub6 RF signal is obtained from a second cellular network 294 (eg, 5G network) via an antenna (eg, second antenna module 244 ), and an RFFE (eg, second RFFE 234 ) ) can be preprocessed. The second RFIC 224 may convert the preprocessed 5G Sub6 RF signal into a BB signal to be processed by a corresponding CP of the first CP 212 or the second CP 214 .

When transmitting, the third RFIC 226 transmits the BB signal generated by the second CP 214 to the 5G Above6 band (eg, about 6 GHz to about 60 GHz) to be used in the second cellular network 294 (eg, 5G network). of RF signal (hereinafter referred to as 5G Above6 RF signal). Upon reception, the third RFIC 226 pre-processes the 5G Above6 RF signal obtained from the second cellular network 294 (eg, 5G network) through an antenna (eg, the antenna 248), and the pre-processed The 5G Above6 RF signal may be converted into a BB signal to be processed by the second CP 214 . According to an embodiment, the third RFFE 236 may be formed as a part of the third RFIC 226 .

According to an embodiment, the electronic device 101 may include the fourth RFIC 228 separately from or as at least a part of the third RFIC 226 . In this case, the fourth RFIC 228 transmits the BB signal generated by the second CP 214 to an RF signal (hereinafter, IF signal) of an intermediate frequency (IF) band (eg, about 9 GHz to about 11 GHz). After converting to , the IF signal may be transmitted to the third RFIC 226 . The third RFIC 226 may convert the IF signal into a 5G Above6 RF signal. Upon reception, the 5G Above6 RF signal is received from the second cellular network 294 (eg, 5G network) via an antenna (eg, antenna 248 ), and is to be converted to an IF signal by the third RFIC 226 . can The fourth RFIC 228 may convert the IF signal into a BB signal so that the second CP 214 can process it.

According to an embodiment, the first RFIC 222 and the second RFIC 224 may be implemented as at least a part of a single chip or a single package. According to an embodiment, the first RFFE 232 and the second RFFE 234 may be implemented as at least a part of a single chip or a single package. According to an embodiment, 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 frequency bands. .

According to an 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 a first substrate (eg, a main PCB or a first printed circuit board). In this case, the third RFIC 226 is located in a partial region (eg, the lower surface) of the second substrate (eg, sub PCB, second printed circuit board) separate from the first substrate, and in another partial region ( Example: An antenna 248 is disposed on the upper surface, so that the third antenna module 246 may be formed. By disposing 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 loss (eg, attenuation) of a signal in a high-frequency band (eg, about 6 GHz to about 60 GHz) used for 5G network communication by a transmission line. Accordingly, the electronic device 101 may improve the quality or speed of communication with the second cellular network 294 (eg, a 5G network). According to an embodiment, the included third RFFE 236 may be separated from the third RFIC 226 and formed as a separate chip. For example, the third antenna module 246 may include a third RFFE 236 and an antenna 248 in the second substrate. For example, in the third RFIC 226 from which the third RFFE 236 is separated, the third antenna module 246 may or may not be disposed on the second substrate.

According to an embodiment, 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 may include, for example, as a part of the third RFFE 236 , a plurality of phase shifters 238 corresponding to the plurality of antenna elements. During transmission, the plurality of phase shifters 238 may transform the phase of a 5G Above6 RF signal to be transmitted to the outside of the electronic device 101 (eg, a base station of a 5G network) through a corresponding antenna element. Upon reception, 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.

According to an embodiment, the third antenna module 246 may up-convert the baseband transmission signal provided by the second communication processor 214 . The third antenna module 246 may transmit the RF transmission signal generated by up-conversion through at least two transmission/reception antenna elements among the plurality of antenna elements 248 . The third antenna module 246 may receive an RF reception signal through at least two transmit/receive antenna elements and at least two receive antenna elements among the plurality of antenna elements 248 . The third antenna module 246 may down-convert the RF reception signal to generate a baseband reception signal. The third antenna module 246 may output the baseband reception signal generated by down-conversion to the second communication processor 214 . The third antenna module 246 may include at least two transmit/receive circuits corresponding to at least two transmit/receive antenna elements one-to-one and at least two receive circuits to correspond one-to-one to at least two receive antenna elements.

The second cellular network 294 (eg, 5G network) operates independently from the first cellular network 292 (eg, a legacy network) (eg, Stand-Alone (SA)) or is connected and operated (eg, Non -Stand Alone (NSA)). For example, the 5G network may have only an access network (eg, 5G radio access network (RAN) or next generation RAN (NG RAN)) and no core network (eg, next generation core (NGC)). In this case, after accessing the access network of the 5G network, the electronic device 101 may access an external network (eg, the Internet) under the control of a core network (eg, evolved packed core (EPC)) of the legacy network. Protocol information for communication with a legacy network (eg, LTE protocol information) or protocol information for communication with a 5G network (eg, new radio (NR) protocol information) is stored in the memory 230, and other components (eg, processor 120 , the first CP 212 , or the second CP 214 ).

According to various embodiments, the processor 120 of the electronic device 101 may execute one or more instructions stored in the memory 130 . The processor 120 may include at least one of a circuit for processing data, for example, an integrated circuit (IC), an arithmetic logic unit (ALU), a field programmable gate array (FPGA), and a large scale integration (LSI). have. The memory 130 may store data related to the electronic device 101 . The memory 130 may include a volatile memory such as a random access memory (RAM) including static random access memory (SRAM) or dynamic RAM (DRAM), read only memory (ROM), magneto-resistive RAM (MRAM), etc. , STT-MRAM (spin-transfer torque MRAM), PRAM (phase-change RAM), RRAM (resistive RAM), FeRAM (ferroelectric RAM) as well as flash memory, eMMC (embedded multimedia card), SSD (solid state drive), etc. It may include the same non-volatile memory.

According to various embodiments, the memory 130 may store application-related instructions and operating system (OS)-related instructions. The operating system is system software executed by the processor 120 . The processor 120 may manage hardware components included in the electronic device 101 by executing an operating system. The operating system may provide an application programming interface (API) as an application that is software other than the system software.

According to various embodiments, one or more applications that are a set of a plurality of instructions may be installed in the memory 130 . That the application is installed in the memory 130 may mean that the application is stored in a format that can be executed by the processor 120 connected to the memory 130 .

3 is an example of a configuration of a communication module in an electronic device according to one or more embodiments of the present invention.

Referring to FIG. 3 , the communication module 300 may include a digital block 310 and/or an analog block 320 . The analog block 320 may be connected to the RF front end 330 . For example, the RF front end 330 may include the antenna modules 197 , 242 , 244 , 248 of FIG. 1 or FIG. 2 .

According to an embodiment, the digital block 310 of the communication module 300 may include at least some components of the wireless communication module 192 of FIG. 1 or FIG. 2 . For example, the digital block 310 of the communication module 300 may include at least some components of the wireless communication module 192 of FIG. 1 or FIG. 2 . At least one function of the digital block 310 to be described below is, for example, a communication processor of the wireless communication module 192 of FIG. 1 or FIG. 2 (eg, the first communication processor 212 or the second communication processor of FIG. 2 ) (214)). For example, the functions and/or components of the digital block 310 may each function as a communication processor and/or RFIC (eg, the functions of the first to fourth RFICs 222 , 224 , 226 and/or 228 in FIG. 2 ). and/or each component, and may be implemented as software or a combination of software and hardware, for example, various components of a communication module are integrated into one component (eg, a single chip), or It may be implemented as a plurality of components (eg, a plurality of chips) separate from each other.

According to an embodiment, the digital block 310 may be implemented as a component separate from the communication processor. For example, an overall operation or state control function for the communication module 300 may be performed by a separate communication processor, and accordingly, the digital block 310 may perform an operation under the control of the communication processor.

According to an embodiment, the digital block 310 may process a digital/baseband signal.

For example, the digital block 310 may perform channel encoding and/or modulation. For example, the digital block 310 may perform modulation on a baseband signal based on a waveform and/or a modulation method of a transmission signal output through at least one antenna of the electronic device 101 . For example, the communication processor 220 may output a digital signal modulated by a specified modulation method to the analog block 320 .

For example, the digital block 310 identifies a communication system such as 4G LTE B5 or B66 or 5G NR (New Radio) N5 or N66 and/or a corresponding modulation scheme, and processes a digital signal based on it and performs clipping By applying it, system stability can be secured.

For example, the digital block 310 may determine the level of the digital signal according to the waveform of the transmission signal. For example, the digital block 310 may adjust the level of the digital signal by applying a backoff value corresponding to the waveform of the transmission signal.

For example, the digital block 310 may request and receive data from a lookup table stored in a memory (eg, the memory 130 of FIGS. 1 and 2 ) in order to apply a backoff value to the digital signal. For example, the digital block 310 requests and receives data from a lookup table stored in a memory (eg, the memory 130 of FIGS. 1 and 2 ) in order to apply a backoff value corresponding to the waveform of the transmission signal. can For example, if the waveform of the transmission signal is the first waveform from the lookup table, the digital block 310 may obtain a first backoff value corresponding to the first waveform. For example, if the waveform of the transmission signal is the second waveform from the lookup table, the digital block 310 may obtain a second backoff value corresponding to the second waveform. The first waveform may include discrete fourier transform spread OFDM (DFT-s-OFDM), and the second waveform may include a cyclic prefix OFDM (CP-OFDM) waveform.

For example, the memory (eg, the memory 130 of FIG. 1 or FIG. 2 ) may include a lookup table ( LUT) can be saved in the format shown in Table 1 below.

PWR lvl/communication system 4G LTE B5 4G LTE B66 5G NR N5 5G NR N66 target power level 1 LUT11 LUT11 LUT11 LUT11 ... ... ... ... ... target power level N LUT1N LUT1N LUT1N LUT1N

Referring to Table 1, a lookup table (LUT) designated for each band operated in each communication system corresponding to each power level may be matched and stored. For convenience of description below, for example, a lookup table (LUT) corresponding to a designated band operated in a 5G NR N5 communication system will be described as an example, but the present embodiment is not limited thereto and can be applied to other bands and/or other communication systems. can

For example, each lookup table (eg, one of LUT11 to LUT1N) contains information for generating a transmission signal output of the corresponding power level, for example, the level of the digital signal corresponding to the transmission signal output of the corresponding power level (envelop scale). ), and/or a backoff value applied to the digital signal for the corresponding level output.

According to an embodiment, the digital block 310 refers to the lookup table (eg, LUT11) corresponding to the output power level 1 of the transmission signal when the transmission signal is to be output at power level 1, and is matched A level and/or a backoff value of the digital signal may be applied to the digital signal.

According to an embodiment, the digital block 310 refers to the lookup table (eg, LUT11) corresponding to the output power level 1 of the transmission signal when the transmission signal is to be output at power level 1, and is matched A backoff value may be determined based on a level and/or a backoff value of the digital signal, and the determined backoff value may be applied to the digital signal.

According to an embodiment, the digital block 310 may apply different backoff values to the digital signal in order to output the same target power level according to the output waveform of the transmission signal.

For example, when the output waveform of the transmission signal is the first waveform, the level of the digital signal is adjusted by applying the first backoff value obtained from the lookup table to the digital signal as it is, and when the output waveform is the second waveform, the first backoff value The level of the digital signal may be adjusted by applying a second backoff value calculated by applying a specified offset to the off value to the digital signal.

For example, when the output waveform of the transmission signal is the first waveform or the second waveform, the first backoff value or the second backoff value calculated by applying an offset specified for each waveform to the backoff value obtained from the lookup table By applying a value to each digital signal, the level of the digital signal can be adjusted according to the output waveform.

For example, the specified offset may be a value inversely proportional to the PAPR of the corresponding output waveform. For example, by applying a relatively large offset to a waveform having a relatively low PAPR among the first waveform and the second waveform, a relatively small backoff value may be applied to make the level of the output digital signal relatively high. .

According to an embodiment, each lookup table includes information for generating a transmission signal output of a corresponding power level for each output waveform of the transmission signal in response to the output power level of the transmission signal, for example, the transmission of the first waveform of the corresponding power level It may include a level (envelop scale) of a digital signal corresponding to the signal output, and/or a plurality of backoff values applied to the digital signal for outputting the corresponding level. For example, each lookup table may include a first backoff value to be applied to a digital signal corresponding to the first waveform and a second backoff value to be applied to a digital signal corresponding to the second waveform corresponding to each output power level. can be saved in advance.

According to an embodiment, when the digital block 310 needs to output the transmission signal at the power level 1, the digital block 310 refers to the lookup table (eg, LUT11) corresponding to the output power level 1 of the transmission signal, and the transmission signal If the output waveform of is the first waveform, the matching first backoff value is obtained and applied to the digital signal, and when the output waveform of the transmission signal is the second waveform, the matching second backoff value is obtained and applied to the digital signal. can

According to an embodiment, the digital block 310 may apply different backoff values to the digital signal in order to output the same target power level according to the output waveform and the modulation method of the transmission signal.

For example, when the output waveform of the transmission signal is the first waveform and the modulation method is quadrature phase shift keying (QPSK), the first backoff value obtained from the lookup table is applied to the digital signal as it is to adjust the level of the digital signal and when the first waveform is another modulation method and/or when the second waveform is QPSK or another modulation method, a second backoff value calculated by applying a specified offset to the first backoff value is applied to the digital signal You can adjust the level of the digital signal by applying it.

For example, depending on whether the output waveform of the transmission signal is the first waveform or the second waveform, and depending on which modulation scheme is applied, for example, among different modulation schemes such as QPSK, 16QAM, 64QAM, or 256QAM , by applying a specified offset for each waveform and modulation method to the backoff value obtained from the lookup table and applying the calculated backoff value to the digital signal, respectively, to adjust the level of the digital signal according to the output waveform and the modulation method .

For example, the specified offset may be applied as a relatively large value compared to 256QAM in the case of QPSK even in the case of the same output waveform. For example, by applying a relatively large offset to the QPSK of the first waveform compared to 256QAM of the first waveform, a relatively small backoff value may be applied to make the level of the output digital signal relatively high.

According to an embodiment, each lookup table includes information for generating a transmission signal output of a corresponding power level according to an output waveform of a transmission signal and a modulation method in response to an output power level of the transmission signal, for example, a first of the corresponding power level. It may include a level (envelop scale) of a digital signal corresponding to a transmission signal output of the QPSK modulation scheme of the waveform, and/or a plurality of backoff values applied to the digital signal for outputting the corresponding level. For example, each lookup table may store in advance respective backoff values to be applied to digital signals corresponding to different modulation schemes with respect to each of the first waveform and the second waveform corresponding to each output power level.

For example, when the digital block 310 needs to output the transmission signal at power level 1, the digital block 310 refers to the lookup table (eg, LUT11) corresponding to the output power level 1 of the transmission signal, and outputs the transmission signal. When the waveform corresponds to the first waveform or the second waveform and the modulation method is one of QPSK, 16QAM, 64QAM, or 256QAM, a matching backoff value may be obtained and applied to the digital signal.

According to an embodiment, when the digital block 310 converts the level (envelop scale output) of the digital signal output by applying backoff to the digital signal according to the output waveform and the modulation method of the transmission signal into a voltage value, the following Table 2 same as

Env Scale Output (dBv) Comparative Example Example CP OFDM QPSK Inner RB 0 0 QPSK Outer RB -1.5 -1.5 16QAM Inner RB -0.5 -0.5 16QAM Outer RB -1.5 -1.5 64QAM Inner RB -2 -2 64QAM Outer RB -2 -2 256QAM Inner RB -5 -5 256QAM Outer RB -5 -5 DFT-s-OFDM QPSK Inner RB 0 1.5 QPSK Outer RB -One 0.5 16QAM Inner RB -One 0.5 16QAM Outer RB -2 -0.5 64QAM Inner RB -2.5 -2 64QAM Outer RB -2.5 -2 256QAM Inner RB -4.5 -3 256QAM Outer RB -4.5 -3

Referring to Table 2, for example, in the case of DFT-s-OFDM, the level of the digital signal output from the digital block 310 may be applied relatively higher than in the case of CP OFDM. In addition, the level of the digital signal may be relatively high in the case of QPSK compared to 16QAM, in the case of 16QAM compared to 64QAM, and in the case of 64QAM compared to 256QAM. In addition, the level of the digital signal may be applied differently depending on the location of a resource block (RB). For example, in the case of the inner RB, the level of the digital signal may be higher than that of the outer RB.

Referring to Table 2, according to the comparative example, even in the case of the DFR-s-OFDM waveform (Waveform), the back-off is based on the CP-OFDM waveform (Waveform), for example, the QPSK inner RB power of the CP-OFDM signal. may be input to the digital block 310 at the highest level. In the case of the DFT-S-OFDM signal, since it has a low PAPR characteristic, although it can be input to the digital block 310 at a level higher than the QPSK inner RB power of the CP-OFDM signal, in the comparative embodiment, the DFT The QPSK inner RB power level of the -S-OFDM signal is set equal to the QPSK inner RB power level of the CP-OFDM signal, which is the highest power level, and the signal level is set smaller than the PARP level. In the case of the DFT-S-OFDM waveform in the result according to the embodiment of the present invention, compared to the comparative embodiment, an input power level higher than approximately 1.5V can be applied based on the QPSK Inner RB, so that the final analog block 320 A higher output can be secured for the amplified signal according to the output. Therefore, it is possible to improve the analog amplifier output maximum power efficiency (Max Power Capability) in the NR 5G terminal.

According to an embodiment, the digital block 310 has nonlinearity in the digital domain to compensate for the nonlinear performance of the amplifier 331 of the RF front end 330 with respect to a digital signal to which a backoff value is applied. ) can be applied. For example, the digital block 310 may change magnitudes and/or phases of the I-domain and Q-domain signals (I/Q signals) of the digital signal in order to compensate for signal distortion caused by the amplifier 331 .

According to an embodiment, the digital block 310 performs clipping to reduce signal distortion on each of the I/Q signals, performs sampling and quantization, and stores each in a bit register (not shown). can

According to an exemplary embodiment, the analog block 320 may convert a baseband signal processed and output by the digital block 310 into an analog signal and perform frequency band conversion to output an RF signal.

According to an embodiment, the RF front end 330 may amplify the RF signal output from the analog block 320 through the amplifier 331 and transmit it through the antenna 333 .

4 is another example of a configuration of a communication module in an electronic device according to one or more embodiments of the present invention.

Referring to FIG. 4 , the communication module 400 may include a communication processor (CP) 410 and an RFIC 420 . The RFIC 420 may be connected to the RF front end 430 . The RFIC 420 may include a digital block 421 and an analog block 423 . Hereinafter, a detailed description of the signal processing operation already described with reference to FIG. 3 will be omitted to avoid duplication of description.

According to an embodiment, the CP 410 includes a communication processor of the wireless communication module 192 of FIG. 1 or 2 (eg, the first communication processor 212 or the second communication processor 214 of FIG. 2). can do.

According to an embodiment, the CP 410 may control the overall operation or state of the communication module 400 for communication. For example, the CP 410 may determine an operation or state of a component included in the communication module 400 and generate a command for controlling the operation or state.

According to an embodiment, the CP 410 may include a protocol stack for performing operations within the layers defined in the communication standard. For example, the CP 410 may generate and interpret a message according to a format defined by a standard, and may interact with a network based on this.

According to an embodiment, the CP 410 may identify a communication system such as 4G LTE B5 or B66 or 5G NR N5 or N66, an output waveform of a transmission signal, and/or a designated modulation scheme.

According to an embodiment, the CP 410 may control the RFIC 420 to process the signal based on the identified communication system, the output waveform of the transmission signal, and/or the modulation method.

According to an embodiment, the CP 410 may control the digital block 421 based on the checked output waveform and/or modulation scheme to perform channel encoding and/or modulation on the digital signal. For example, in order to output a target power level of the transmission signal, the CP 410 may be configured to apply a backoff value for generating a level of a digital signal corresponding to the identified output waveform and/or modulation scheme to output a target power level of the transmission signal ( 421) can be controlled. For example, in order to output the target power level of the transmission signal, the CP 410 calculates a backoff value applied to the digital signal based on the checked output waveform and/or the modulation method and transmits it to the digital block 421 . can For example, the CP 410 may obtain data necessary for calculating a backoff value from a memory (eg, the memory 130 of FIG. 1 or FIG. 2 ). For example, the CP 410 may obtain a backoff value corresponding to an output waveform and/or a modulation method identified according to a target power level of a transmission signal from a lookup table stored in a memory.

According to an embodiment, the digital block 421 adjusts the level of the baseband digital signal based on the waveform and/or the modulation method of the transmission signal output through the RF front end 430 under the control of the CP 410 . A backoff value can be applied. For example, the digital block 421 may receive a backoff value for adjusting the level of the digital signal in response to the waveform and/or the modulation method of the transmission signal from the CP 410 .

According to an embodiment, the digital block 421 may adjust the level of the digital signal by applying a backoff value to the digital signal.

According to an embodiment, the digital block 421 may perform pre-distortion on a digital signal whose level is adjusted by applying a backoff value, and may be processed by performing clipping, sampling, and quantization.

According to an embodiment, the analog block 423 converts a baseband signal processed and output by the digital block 421 into an analog signal, performs frequency band conversion to output an RF signal, and an RF front end 430 . It can be amplified through the amplifier 431 of the , and transmitted through the antenna 433 .

5 is another example of a configuration of a communication module in an electronic device according to one or more embodiments of the present invention.

According to an embodiment, the communication module 500 includes a tech modulator 510 , a digital transmit front end (TxFE) 520 , a digital pre-distortion (DPD) 530 , an I/ It may include an I/Q quantization (I/Q quantization) 540 and/or a digital analog converter (DAC) 550 .

According to an embodiment, some of the components of the communication module 500 are a CP (eg, the communication processor 212, 214, or 410 of FIG. 2 or 4) or an RFIC (eg, the RFIC 222 of FIG. 2 or 4) , 224, 226, 228 or 420)) may be included and implemented. For example, the tech modulator 510 may be implemented by being included in the CP. For example, the TxFE 520 may be implemented by being included in the CP. In another example, the TxFE 520 may be implemented by being included in the RFIC.

According to an embodiment, the tech modulator 510 may identify a communication system such as 4G LTE B5 or B66 or 5G New Radio (NR) N5 or N66 and/or a corresponding modulation scheme. The tech modulator 510 may secure system stability by processing a digital signal and applying clipping based on the identified communication system and/or modulation method.

According to an embodiment, the digital block 310 of the TxFE 520 may determine the level of the digital signal output according to the waveform and/or the modulation method of the transmission signal. For example, the TxFE 520 calculates a backoff value of a digital signal corresponding to a waveform and a modulation method of a transmission signal according to a target output power level of a transmission signal output from the antenna, and is input to the DPD 530 . You can adjust the level of the digital signal.

According to an embodiment, the memory (eg, the memory 130 of FIG. 1 or FIG. 2 ) may look up, for example, a backoff value corresponding to a waveform and a modulation method of a transmission signal, respectively, according to a target output power level of the transmission signal. It can be stored in table format.

According to an embodiment, the DPD 530 is a digital domain to compensate for nonlinearity added according to signal processing in an analog block to an input digital signal whose level is adjusted by applying a backoff value. The magnitude and/or phase of the digital signal may be changed to apply nonlinearity in .

According to an embodiment, the I/Q quantizer 540 may perform clipping, sampling, and quantization to minimize signal distortion on each of the I/Q signals.

According to an embodiment, the DAC 550 may convert the digital signal output from the I/Q quantizer 540 into an analog signal.

According to an embodiment, the electronic device (eg, the electronic device 101 of FIG. 1 ) processes an input signal to output a base band digital signal to a digital block (eg, the digital block of FIG. 3 or 4 ) (310, 421)), an analog block that converts the baseband digital signal into an analog signal and processes the converted analog signal to convert it into a radio frequency (RF) signal (eg, the analog block 320 of FIG. 3 or FIG. 4 ) 423)) and an antenna module for amplifying the RF signal and outputting the amplified transmission signal (eg, the antenna modules 330 and 430 of FIG. 3 or FIG. 4 ).

According to an embodiment, the digital block determines whether an output waveform of the transmission signal output through the antenna module is a first waveform or a second waveform, and if the output waveform is the first waveform, The level of the baseband digital signal may be adjusted based on a first backoff value, and when the output waveform is the second waveform, the level of the baseband digital signal may be adjusted based on a second backoff value.

The first backoff value respectively applied to the baseband digital signal corresponding to each of a plurality of target power levels of the transmission signal according to whether the output waveform is the first waveform or the second waveform and a memory (eg, the memory 130 of FIG. 1 or FIG. 2 ) for storing a lookup table (LUT) including the second backoff value.

According to an embodiment, the second backoff value is obtained by applying an offset value based on a difference between the average power (PAPR) of the transmission signal of the first waveform and the second waveform to the first backoff value. can be calculated.

According to an embodiment, the digital block determines a modulation method of the transmission signal transmitted through the antenna, and when the determined modulation method corresponds to a reference modulation method, the digital block is applied to the baseband digital signal of the first waveform. The level of the baseband digital signal may be adjusted by applying the first backoff value to the signal and applying the second backoff value to the baseband digital signal of the second waveform.

According to an embodiment, the digital block may include, when the determined modulation method is not the reference modulation method, an offset value based on an average power difference between the reference modulation method and the determined modulation method as the first backoff value or the second 2 By applying the backoff value, it is possible to adjust the level of the baseband digital signal.

According to an embodiment, the modulation scheme of the transmission signal may include QPSK, 16QAM, 64QAM, and 256QAM, and the reference modulation scheme may be set to QPSK.

According to an embodiment, the output waveform may include a discrete fourier transform spread OFDM (DFT-s-OFDM) or a cyclic prefix OFDM (CP-OFDM) output waveform.

According to an embodiment, the electronic device (eg, the electronic device 101 of FIG. 1 ) includes a communication processor (eg, the communication processors 212 , 214 , 410 of FIG. 2 or 3 ) and an RFIC connected to the communication processor ( Example: RFICs 222, 224, 226, 228 of FIG. 2 and analog blocks 320 and 423 of FIG. 3 or 4) may be included.

According to an embodiment, the communication processor determines whether an output waveform of a transmission signal output through an antenna is a first waveform or a second waveform, and controls the RFIC so that the output waveform is the first waveform , adjust the level of the baseband digital signal based on the first backoff value, and if the output waveform is the second waveform, adjust the level of the baseband digital signal based on the second backoff value have.

According to an embodiment, the communication processor determines a modulation method of the transmission signal transmitted through the antenna, controls the RFIC, and when the determined modulation method corresponds to a reference modulation method, The level of the baseband digital signal may be adjusted by applying the first backoff value to the baseband digital signal and applying the second backoff value to the baseband digital signal of the second waveform. have.

According to an embodiment, when the determined modulation method is not the reference modulation method, the communication processor may be configured to calculate an offset value based on an average power difference between the reference modulation method and the determined modulation method as the first backoff value or the second backoff value. 2 By applying the backoff value, it is possible to adjust the level of the baseband digital signal.

6 is a graph comparing a peak to average power ratio (PAPR) according to a waveform of a transmission signal of an electronic device according to one or more embodiments of the present disclosure.

In a communication network system after long term evolution (LTE), in order to increase frequency efficiency, orthogonal frequency division multiplexing (OFDM) technology is applied to overlap and transmit multiple subcarriers, so that the maximum power to average power ratio (PAPR) is applied. , peak to average power ratio) increased.

An electronic device (eg, the electronic device 101 of FIG. 1 ) according to an embodiment of the present invention transmits an RF signal to a base station through an uplink and a power amplifier (PA) to transmit a sufficient power level. ) (eg, the amplifier 331 or 431 of FIG. 3 or 4 ) may amplify the signal. Due to the high PAPR characteristics of OFDM, in LTE, discrete fourier transform spread OFDM (DFT-s-OFDM) was developed to reduce PAPR, and the electronic device uses DFT-s-OFDM and the base station uses CP-OFDM (cyclic prefix OFDM). Different waveforms can be operated. Although DFT-s-OFDM has a disadvantage due to low frequency efficiency in terms of resource operation of the base station, it can increase the power that an electronic device can output. The power that the device can output may be lowered. In the uplink of 5G, both types of waveforms are supported by the electronic device, and the base station may adaptively operate the output waveform of the electronic device according to the purpose and situation.

As shown in FIG. 6 , the two output waveforms described above are PAPR 601 of the output waveform of CP OFDM and PAPR 603 of the output waveform of DFT-s-OFDM according to the implementation of the electronic device, for example, , may show a PAPR difference of about 2 dB.

7 is a flowchart illustrating an operation for adjusting transmission signal power according to a waveform of a transmission signal of an electronic device according to one or more embodiments of the present disclosure.

According to one or more embodiments, a communication processor (eg, the first or second communication processor 212 or 214 of FIG. 2 ) or a digital block (eg, the electronic device 101 of FIG. 1 ) of the electronic device (eg, the electronic device 101 of FIG. 1 ) : The digital block 310 or 410 of FIG. 3 or 4 ) or the tech modulator 510 of FIG. 5 performs the antenna of the electronic device 101 (eg, the antenna 333 or 433 of FIG. 3 or 4 ) in operation 701 . ), you can check the output waveform of the transmitted signal output.

For example, the communication processor or digital block may identify the output waveform of the transmitted signal through the control signal transmitted from the base station. The output waveform of the transmission signal may be, for example, a DFT-s-OFDM or CP-OFDM output waveform, which may be set by the base station and received by the electronic device through the control signal. For example, the output waveform of the transmission signal may be a first waveform (eg, DFT-s-OFDM) or a second waveform (eg, CP-OFDM).

According to an embodiment, the communication processor or the digital block is configured to obtain a target output power level of the transmission signal in operation 705 when the output waveform is the first waveform according to whether the output waveform checked in operation 703 is the first waveform For this purpose, the level of the digital signal may be adjusted by applying the first backoff value to the digital signal.

For example, when the output waveform is the first waveform, the backoff value for adjusting the level of the digital signal may be obtained from a lookup table corresponding to the target output power level of the transmission signal with reference to Table 1 above. For example, when the target output power level of the transmission signal is 1, a backoff value obtained from the corresponding lookup table LUT11 may be used as the first backoff value.

According to an embodiment, the communication processor or the digital block performs a second backoff value for the digital signal in operation 707 when the output waveform checked in operation 703 is not the first waveform, for example, when the output waveform is the second waveform. can be applied to adjust the level of the digital signal.

For example, when the output waveform is the second waveform, the second backoff value for adjusting the digital signal level is described in Table 1 in a lookup table corresponding to the target output power level of the transmission signal (eg: LUT11) may be calculated by applying a specified offset to the first backoff value obtained. For example, when the difference between the PAPR of the transmission signal of the DFT-s-OFDM waveform and the PAPR of the transmission signal of the CP-OFDM waveform is about 2 dB, the first backoff value obtained from the lookup table is applied. The offset value may be preset by calculating a value capable of compensating for the PAPR difference.

In an embodiment, the lookup table (eg, LUT11) corresponding to the target output power level of the transmission signal of Table 1 includes a first backoff value corresponding to the first waveform and a second backoff value corresponding to the second waveform. value can be stored. For example, the digital block may obtain a second backoff value corresponding to the second waveform from the lookup table.

8 is a flowchart illustrating an operation for adjusting the power of a transmission signal according to a modulation method in an electronic device according to one or more embodiments of the present invention.

According to one or more embodiments, a communication processor (eg, the first or second communication processor 212 or 214 of FIG. 2 ) or a digital block (eg, the electronic device 101 of FIG. 1 ) of the electronic device (eg, the electronic device 101 of FIG. 1 ) : The digital block 310 or 410 of FIG. 3 or 4) or the tech modulator 510 (hereinafter referred to as a digital block) of FIG. 5 is performed in operation 801 by the antenna of the electronic device 101 (eg, FIG. 3 or FIG. The modulation method of the transmission signal output through the antenna 333 or 433 of FIG. 4 can be checked.

For example, the communication processor or the digital block may check the modulation method of the transmission signal through the control signal transmitted from the base station. The modulation method of the transmission signal may include, for example, QPSK, 16QAM, 64QAM, or 256QAM.

According to an embodiment, when the modulation method checked in operation 803 is the reference modulation method, the communication processor or the digital block applies a reference backoff value to the digital signal to obtain a target output power level of the transmission signal in operation 805 to adjust the level of the digital signal. For example, the reference modulation scheme may be set to QPSK having a low code rate.

For example, when the identified modulation method is the reference modulation method, the reference backoff value for adjusting the level of the digital signal can be obtained from a lookup table corresponding to the target output power level of the transmission signal with reference to Table 1 above. can For example, when the target output power level of the transmission signal is 1, a backoff value obtained from the corresponding lookup table LUT11 may be used as the reference backoff value.

For example, the backoff value obtained by adjusting the level of the digital signal for obtaining the target output level of the transmission signal modulated by QPSK, which is the reference modulation method, corresponds to the target output power level of the transmission signal, referring to Table 1 above. can be obtained from a lookup table. For example, when the target output power level of the transmission signal is 2, a backoff value obtained from the corresponding lookup table LUT12 may be used as the reference backoff value.

According to an embodiment, when it is determined that the modulation method is not the reference modulation method in operation 803, the communication processor or the digital block compares the reference modulation method and the modulation method in operation 807 to obtain the target output power level of the transmission signal. The level of the digital signal may be adjusted by applying a backoff value calculated by applying a specified offset of the identified modulation scheme to the reference backoff value obtained from the corresponding lookup table.

For example, referring to Table 1 above for a backoff value for adjusting the level of the digital signal when the identified modulation method is not the reference modulation method, when the target output power level of the transmission signal is 1, a corresponding lookup table A backoff value calculated by applying a specified offset to the backoff value obtained from (LUT11) may be used.

For example, when the difference between the PAPR of the transmission signal according to the identified modulation method and the PAPR of the transmission signal according to the reference modulation method is about 1 dB, the offset applied to the first backoff value obtained from the lookup table The value may be predetermined by calculating a value capable of compensating for the difference in the PAPR.

In an embodiment, the lookup table (eg, LUT11) corresponding to the target output power level of the transmission signal of Table 1 includes a reference backoff value corresponding to the reference modulation method and backoff values corresponding to another modulation method in advance. can be saved For example, the communication processor or the digital block may obtain a backoff value corresponding to the identified modulation scheme from the lookup table.

9 is a flowchart illustrating an operation for adjusting the power of a transmission signal according to an output waveform and a modulation method in an electronic device according to one or more embodiments of the present invention.

According to one or more embodiments, a communication processor (eg, the first or second communication processor 212 or 214 of FIG. 2 ) or a digital block (eg, the electronic device 101 of FIG. 1 ) of the electronic device (eg, the electronic device 101 of FIG. 1 ) : The digital block 310 or 410 of FIG. 3 or 4 ) or the tech modulator 510 of FIG. 5 performs the antenna of the electronic device 101 (eg, the antenna 333 or 433 of FIG. 3 or 4 ) in operation 901 . ), you can check the output waveform of the transmitted signal and the modulation method.

For example, the communication processor or the digital block may identify the output waveform and modulation method of the transmission signal through the control signal transmitted from the base station. The output waveform of the transmission signal may be, for example, a DFT-s-OFDM or CP-OFDM output waveform, which may be set by the base station and received by the electronic device through the control signal. For example, the output waveform of the transmission signal may be a first waveform (eg, DFT-s-OFDM) or a second waveform (eg, CP-OFDM). For example, the modulation method of the transmission signal may include QPSK, 16QAM, 64QAM, or 256QAM. For example, the reference modulation scheme may be set to QPSK having a low code rate.

According to an embodiment, if the output waveform is the first waveform in operation 903 , the communication processor or the digital block may proceed to operation 905 to determine whether the modulation method of the transmission signal is the reference modulation method.

According to an embodiment, when the modulation method is the reference modulation method, the communication processor or the digital block may adjust the level of the digital signal by applying a first backoff value corresponding to the reference modulation method of the first waveform in operation 907 .

In an embodiment, the first backoff value for adjusting the digital signal level to obtain a target output power level of the transmission signal modulated by QPSK, which is the reference modulation method of the first waveform, is described in Table 1 above. may be obtained from a lookup table corresponding to the target output power level of .

According to an embodiment, when it is determined that the modulation method is not the reference modulation method in operation 905 , the communication processor or the digital block compares the reference modulation method with the confirmed modulation method in operation 909, and the target output power level of the transmission signal The backoff value may be calculated by applying an offset to the first backoff value obtained from the lookup table corresponding to .

According to an embodiment, the communication processor or the digital block may determine whether the modulation method of the transmission signal is the reference modulation method in operation 911 after confirming that the output waveform is not the first waveform, for example, the second waveform in operation 903 .

According to an embodiment, when the modulation method of the transmission signal is the reference modulation method in operation 911, the communication processor or the digital block may adjust the digital signal level by applying a second backoff value to the second waveform in operation 913. have.

In an embodiment, the lookup table (eg, LUT11) corresponding to the target output power level of the transmission signal of Table 1 includes a first backoff value corresponding to the first waveform and a second backoff value corresponding to the second waveform. value can be stored. For example, the second backoff value corresponding to the reference modulation method of the second waveform may be obtained from a lookup table.

According to an embodiment, the communication processor or digital block compares the reference modulation method and the modulation method in operation 915 when the modulation method is not the reference modulation method in operation 911 to apply a specified offset to the second backoff value An off value can be calculated and applied to a digital signal.

10 is a diagram for explaining an example of increasing the output power of a transmission signal by adaptive transmission signal power adjustment according to an output waveform according to one or more embodiments of the present invention.

Referring to FIG. 10 , in the digital domain for the DFT-s-OFDM output waveform, compared to the second backoff value 1003 applied in the digital domain to the CP-OFDM output waveform in 5G, according to the above-described embodiments. As the first backoff value 1001 to be applied is applied as a relatively small value, the output power level of the transmit signal that passes through the amplifier and is output through the antenna is the same as the power level 1005 to which the same backoff value is applied. (1007) can be high.

11 is an example of a graph for explaining an example of increasing the output power of a transmission signal by adaptive transmission signal power adjustment according to an output waveform according to one or more embodiments of the present invention. In the graph, the x-axis represents the frequency (MHz) and the y-axis represents the output power level (dBm).

In general, compared to the PAPR of 4.5dB of CP-OFDM output waveform in 5G, DFT-s-OFDM output waveform has a low PAPR of 3.2dB. 11 and Table 3 below show the antenna after adjusting the digital signal level by applying different backoff values to the case where the output waveform of the transmission signal is CP OFDM and DFT-s-OFDM according to the above-described embodiments. An example of an output power level of a transmission signal output through .

Frequency (MHz) 1715 1717 1719 1721 1723 1725 1727 1729 1731 1733 1735 1737 PAPR 4.5dB (dBm) 26.23 26.23 26.19 26.19 26.11 25.98 25.9 25.88 25.82 25.82 25.89 26.02 PAPR 3.2dB (dBm) 27.53 27.58 27.53 27.51 27.39 27.36 27.23 27.18 27.2 27.22 27.29 27.36 Delta (dB) 1.3 1.35 1.34 1.32 1.28 1.38 1.33 1.3 1.38 1.4 1.4 1.34

11 and Table 3, compared to the output power level 1103 of the transmission signal output through the antenna in the case of a CP OFDM output waveform of PAPR 4.5 dB, in the case of a DFT-s-OFDM output waveform of PAPR 3.2 dB It can be seen that the output power level 1101 of the transmission signal is higher. Accordingly, the power supplied to the amplifier can be reduced to obtain the target output power, thereby increasing the efficiency of the amplifier and reducing the current consumption.

An electronic device according to one or more embodiments disclosed in this document may be a device of various types. 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. The electronic device according to the embodiment of the present document is not limited to the aforementioned devices.

One or more embodiments of this document and the terms used therein are not intended to limit the technical features described in this document to the specified embodiments, but should be understood to include various modifications, equivalents, or substitutions of the embodiments. In connection with the description of the drawings, like reference numerals may be used for similar or related components. The singular form of the noun corresponding to the item may include one or more items, unless the relevant context clearly dictates otherwise. As used herein, “A or B”, “at least one of A and B”, “at least one of A or B,” “A, B or C,” “at least one of A, B and C,” and “A , B, or C" each may include any one of, or all possible combinations of, items listed together in the corresponding one of the phrases. Terms such as “first”, “second”, or “first” or “second” may simply be used to distinguish the component from other components in question, and may refer to components in other aspects (e.g., importance or order) is not limited. 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 coupled to another component directly (eg, by wire), wirelessly, or through a third component.

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

One or more embodiments of this document may be stored in a storage medium (eg, internal memory 136 or external memory 138) readable by a machine (eg, electronic device 101). It may be implemented as software (eg, program 140) including one or more instructions. For example, a processor (eg, processor 120 ) of a device (eg, electronic device 101 ) may call at least one of one or more instructions stored from a storage medium and execute it. This enables the device to be operated to perform at least one function according to the at least one command called. 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. Here, 'non-transitory' only means that the storage medium is a tangible device and does not include a signal (eg, EM wave), and this term is used when data is semi-permanently stored in the storage medium. and temporary storage.

According to an embodiment, the method according to one or more 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 device-readable storage medium (eg compact disc read only memory (CD-ROM)), or via an application store (eg Play Store ^TM ) or on two user devices ( It can be distributed online (eg download or upload), directly between smartphones (eg smartphones). In the case of online distribution, at least a part of the computer program product may be temporarily stored or temporarily created in a device-readable storage medium such as a memory of a server of a manufacturer, a server of an application store, or a relay server.

According to one or more embodiments, each component (eg, a module or a program) of the described components may include a singular or a plurality of entities. According to one or more embodiments, one or more components or operations among the aforementioned components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (eg, a module or a program) may be integrated into one component. In this case, 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 integration. According to one or more embodiments, 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; It may be omitted, or one or more other operations may be added.

Claims (15)

In an electronic device, a digital block for processing an input signal and outputting a base band digital signal; an analog block for converting the baseband digital signal into an analog signal and for converting the converted analog signal into a radio frequency (RF) signal; and An antenna module amplifying the RF signal and outputting the amplified transmission signal, The digital block is determining whether an output waveform of the transmission signal output through the antenna module is a first waveform or a second waveform; When the output waveform is the first waveform, the level of the baseband digital signal is adjusted based on a first backoff value, and when the output waveform is the second waveform, the baseband digital signal is adjusted based on a second backoff value. An electronic device that adjusts the level of a digital signal. According to claim 1, The first backoff value and the second backoff value respectively applied to the baseband digital signal corresponding to each of a plurality of target power levels of the transmission signal according to whether the output waveform is the first waveform or the second waveform The electronic device further comprising a memory for storing a lookup table (LUT) comprising values. 3. The method of claim 1 or 2, The second backoff value is calculated by applying an offset value based on a difference between a peak to average ratio (PAPR) of the transmission signal of the first waveform and the second waveform to the first backoff value. being an electronic device. According to claim 1, The digital block determines a modulation method of the transmission signal transmitted through the antenna, If the determined modulation method corresponds to a reference modulation method, the first backoff value is applied to the baseband digital signal of the first waveform, and the second backoff value is applied to the baseband digital signal of the second waveform An electronic device for adjusting the level of the baseband digital signal by applying an off value. 5. The method of claim 4, The digital block is If the determined modulation method is not the reference modulation method, an offset value based on an average power difference between the reference modulation method and the determined modulation method is applied to the first backoff value or the second backoff value, and the baseband An electronic device that adjusts the level of a digital signal. 5. The method of claim 4, The modulation scheme of the transmission signal includes QPSK, 16QAM, 64QAM, and 256QAM, and the reference modulation scheme is set to quadrature phase shifting keying (QPSK). According to claim 1, The output waveform includes a discrete fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) or cyclic prefix OFDM (CP-OFDM) output waveform. In an electronic device, communication processor; and and a radio frequency integrated circuit (RFIC) connected to the communication processor; The communication processor determines whether an output waveform of the transmission signal output through the antenna is a first waveform or a second waveform, By controlling the RFIC, if the output waveform is the first waveform, the level of the baseband digital signal is adjusted based on a first backoff value, and if the output waveform is the second waveform, the level of the baseband digital signal is adjusted to a second backoff value. adjust the level of the baseband digital signal based on 9. The method of claim 8, The first backoff value and the second backoff value respectively applied to the baseband digital signal corresponding to each of a plurality of target power levels of the transmission signal according to whether the output waveform is the first waveform or the second waveform The electronic device further comprising a memory for storing a lookup table (LUT) comprising values. 10. The method according to claim 8 or 9, The second backoff value is calculated by applying an offset value based on a difference between a peak to average ratio (PAPR) of the transmission signal of the first waveform and the second waveform to the first backoff value. being an electronic device. 9. The method of claim 8, The communication processor determines a modulation scheme of the transmission signal transmitted through the antenna, By controlling the RFIC, if the determined modulation method corresponds to a reference modulation method, the first backoff value is applied to the baseband digital signal of the first waveform, and the baseband digital signal of the second waveform to adjust the level of the baseband digital signal by applying the second backoff value to . 12. The method of claim 11, The communication processor, If the determined modulation method is not the reference modulation method, an offset value based on an average power difference between the reference modulation method and the determined modulation method is applied to the first backoff value or the second backoff value, and the baseband An electronic device for adjusting the level of a digital signal. 12. The method of claim 11, The modulation scheme of the transmission signal includes quadrature phase shifting keying (QPSK), 16QAM, 64QAM, and 256QAM, and the reference modulation scheme is set to QPSK. 9. The method of claim 8, The output waveform includes a discrete fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) or cyclic prefix OFDM (CP-OFDM) output waveform. A method for an electronic device, comprising: determining whether an output waveform of a transmission signal output through an antenna of the electronic device is a first waveform or a second waveform; if the output waveform is the first waveform, adjusting the level of the baseband digital signal based on a first backoff value; and and if the output waveform is the second waveform, adjusting the level of the baseband digital signal based on a second backoff value.

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