Method of adjusting an applied voltage for amplifying a transmit signal and electronic device thereof

Abstract

According to one or more embodiments of the disclosure, an electronic device can include a power amplifier, a voltage generator, an antenna, and a communication processor. The CP determines whether an output waveform of a transmission signal output through the antenna is a first waveform or a second waveform. If the output waveform is the first waveform, the voltage generator generates a first output voltage for amplifying the first waveform by applying a first direct current (DC) power source of one or more first voltages. If the output waveform is the second waveform, the voltage generator generates a second output voltage for amplifying the second waveform by applying a second DC power source of a second voltage that is shifted by a specified level with respect to the first voltage, based on a peak power of the first waveform and a peak power of the second waveform.

Description

Technical Field

[0001] This disclosure generally relates to a method and electronic device for adjusting the applied voltage used to amplify a transmitted signal. Background Technology

[0002] As electronic devices continue to advance, they support a wide variety of modules and functions. For example, electronic devices also support large file downloads, multiple windows, large screens, dual speakers, and / or multiple cameras. Electronic devices can also utilize next-generation communication methods as faster communication methods to support additional functionalities.

[0003] In fifth-generation (5G) systems, Discrete Fourier Transform Spread Spectrum Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) and Cyclic Prefix OFDM (CP-OFDM) are managed in uplink (UL) communication. Furthermore, various modulation schemes are applied to the UL communication signals in 5G. However, based on different waveforms and / or different modulation schemes, current consumption increases when the same voltage is applied to amplify the transmitted signal. Summary of the Invention

[0004] [Solution to the problem]

[0005] This disclosure is provided to at least address the aforementioned problems and / or disadvantages, and to provide at least the following advantages.

[0006] Therefore, one aspect of this disclosure is to provide a method and electronic device for adjusting the applied voltage for amplifying a transmitted signal, thereby reducing current consumption by adaptively adjusting the management of the applied voltage for amplifying the signal based on different waveforms and / or modulation schemes.

[0007] Another aspect of this disclosure is to provide a method for adaptively adjusting the applied voltage for amplifying the transmitted signal based on the instantaneous power and / or signal quality of the transmitted signal.

[0008] According to one aspect of this disclosure, an electronic device is provided, comprising: a power amplifier (PA), a voltage generator, an antenna, and a communication processor (CP). The PA is configured to amplify an input signal; the voltage generator is configured to generate one or more output voltages to be applied to the PA to amplify the input signal; the antenna is configured to transmit a signal based on a signal output amplified by the PA; and the communication processor (CP) is configured to control the PA, the voltage generator, and the antenna. The CP is configured to: determine whether the output waveform of the transmitted signal output through the antenna is a first waveform or a second waveform; if the output waveform is the first waveform, control the voltage generator to generate a first output voltage for amplifying the first waveform by applying one or more first voltages to a first direct current (DC) power supply; and if the output waveform is the second waveform, control the voltage generator to generate a second output voltage for amplifying the second waveform by applying a second DC power supply with a second voltage shifted by a specified level relative to the first voltage, based on the peak power of the first waveform and the peak power of the second waveform.

[0009] According to another aspect of this disclosure, an electronic device is provided, comprising: a power amplifier (PA), a voltage generator, an antenna, and a communication processor (CP). The PA is configured to amplify an input signal; the voltage generator is configured to generate one or more output voltages to be applied to the PA to amplify the input signal; the antenna is configured to transmit a signal based on a signal output amplified by the PA; and the communication processor (CP) is configured to control the PA, the voltage generator, and the antenna. The CP is configured to: determine a modulation scheme of the transmitted signal output through the antenna; if the modulation scheme is a reference modulation scheme, control the voltage generator to generate a reference output voltage for amplifying the input signal by applying one or more reference DC power supplies containing reference voltages; and if the modulation scheme is not a reference modulation scheme, control the voltage generator to generate an output voltage for amplifying the input signal by applying a DC power supply containing a voltage shifted by a specified level based on the peak power of the modulation scheme and the peak power of the reference modulation scheme.

[0010] According to another aspect of this disclosure, a method for controlling an electronic device is provided. The method includes: determining whether an output waveform of a transmitted signal output through an antenna in the electronic device is a first waveform or a second waveform; if the output waveform is the first waveform, generating a first output voltage for amplifying an input signal of a power amplifier PA of the electronic device using a first DC power supply with one or more first voltages; and if the output waveform is the second waveform, generating a second output voltage for amplifying the second waveform using a second DC power supply with a second voltage shifted by a specified level relative to the first voltage, based on the peak power of the first waveform and the peak power of the second waveform. Attached Figure Description

[0011] The above and other aspects, features and advantages of certain embodiments of the present disclosure will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, wherein:

[0012] Figure 1 An electronic device in a network environment according to an embodiment is shown;

[0013] Figure 2 A communication module in an electronic device according to an embodiment is shown;

[0014] Figure 3 A communication module in an electronic device according to an embodiment is shown;

[0015] Figure 4 It is a graph showing the comparison of peak-to-average power ratio (PAPR) of the transmitted signal waveform of the electronic device according to the embodiment;

[0016] Figure 5A It is a graph showing the applied voltage for power amplification of the transmitted signal waveform of the electronic device according to an embodiment;

[0017] Figure 5B It is a graph showing the applied voltage for power amplification of the transmitted signal waveform of the electronic device according to an embodiment;

[0018] Figure 6 It is a graph showing the effect of reducing power consumption in an electronic device according to the embodiment;

[0019] Figure 7 This is a flowchart illustrating the operation of adjusting the applied voltage for transmitting signal power amplification based on the output waveform of an electronic device according to an embodiment;

[0020] Figure 8 This is a flowchart illustrating the operation of adjusting the applied voltage for transmitting signal power amplification according to an electronic device-based modulation scheme based on an embodiment;

[0021] Figure 9 This is a flowchart illustrating the operation of adjusting the applied voltage for transmitting signal power amplification based on the output waveform and modulation scheme of the electronic device according to an embodiment; and

[0022] Figure 10 This is a flowchart illustrating, according to an embodiment, the operation of adaptively readjusting the applied voltage for power amplification of a transmitted signal adjusted based on the output waveform and / or modulation scheme of the electronic device according to instantaneous power and / or signal quality. Detailed Implementation

[0023] Various embodiments of this disclosure will be described in detail below with reference to the accompanying drawings.

[0024] In the following description, specific details such as detailed configurations and components are provided to aid in a comprehensive understanding of these embodiments of the present disclosure. Therefore, it will be apparent to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. Furthermore, for clarity and brevity, descriptions of well-known functions and structures have been omitted.

[0025] Figure 1 An electronic device 101 in a network environment 100 according to an embodiment is shown.

[0026] refer to Figure 1 In network environment 100, electronic device 101 can communicate with electronic device 102 via a first network 198 (e.g., a short-range wireless communication network), or with electronic device 104 or server 108 via a second network 199 (e.g., a long-range wireless communication network). According to an embodiment, electronic device 101 can communicate with electronic device 104 via server 108. According to an embodiment, electronic device 101 may include a processor 120, memory 130, input device 150, sound output device 155, display device 160, audio module 170, sensor module 176, interface 177, haptic module 179, camera module 180, power management module 188, battery 189, communication module 190, subscriber identification module (SIM) 196, or antenna module 197. In some embodiments, at least one of these components (e.g., display device 160 or camera module 180) may be omitted from electronic device 101, or one or more other components may be added to electronic device 101. In some implementations, some of the components may be implemented as a single integrated circuit. For example, the sensor module 176 (e.g., a fingerprint sensor, an iris sensor, or an illuminance sensor) may be implemented as embedded in the display device 160 (e.g., a display).

[0027] Processor 120 may run software (e.g., program 140) to control at least one other component (e.g., hardware or software component) of electronic device 101 connected to processor 120, and may perform various data processing or calculations. According to one embodiment, as at least part of the data processing or calculation, processor 120 may load commands or data received from another component (e.g., sensor module 176 or communication module 190) into volatile memory 132, process the commands or data stored in volatile memory 132, and store the resulting data in non-volatile memory 134. According to an embodiment, processor 120 may include a main processor 121 (e.g., central processing unit (CPU) or application processor (AP)) and an auxiliary processor 123 (e.g., graphics processing unit (GPU), image signal processor (ISP), sensor hub processor, or communication processor (CP)) that is operationally independent of or combined with the main processor 121. Additionally or alternatively, auxiliary processor 123 may be adapted to consume less power than the main processor 121, or adapted specifically for a given function. The auxiliary processor 123 can be implemented separately from the main processor 121, or it can be implemented as part of the main processor 121.

[0028] When the main processor 121 is inactive (e.g., in sleep mode), the auxiliary processor 123 may control at least some of the functions or states associated with at least one component of the electronic device 101 (other than the main processor 121) (e.g., display device 160, sensor module 176, or communication module 190). Alternatively, when the main processor 121 is active (e.g., running an application), the auxiliary processor 123 may work with the main processor 121 to control at least some of the functions or states associated with at least one component of the electronic device 101 (e.g., display device 160, sensor module 176, or communication module 190). According to embodiments, the auxiliary processor 123 (e.g., an image signal processor or a communication processor) may be implemented as part of another component (e.g., camera module 180 or communication module 190) functionally associated with the auxiliary processor 123.

[0029] Memory 130 may store various data used by at least one component of electronic device 101 (e.g., processor 120 or sensor module 176). The various data may include, for example, software (e.g., program 140) and input or output data for commands associated with it. Memory 130 may include volatile memory 132 or non-volatile memory 134.

[0030] The program 140 may be stored as software in the memory 130, and the program 140 may include, for example, an operating system (OS) 142, middleware 144, or application 146.

[0031] Input device 150 can receive commands or data from outside electronic device 101 (e.g., a user) that will be used by other components of electronic device 101 (e.g., processor 120). Input device 150 may include, for example, a microphone, mouse, keyboard, or digital pen (e.g., stylus).

[0032] The sound output device 155 can output sound signals to the outside of the electronic device 101. The sound output device 155 may include, for example, a speaker or a receiver. The speaker can be used for general purposes such as playing multimedia or playing records, and the receiver can be used for incoming calls. According to an embodiment, the receiver may be implemented separately from the speaker or as part of the speaker.

[0033] Display device 160 can visually provide information to the outside of electronic device 101 (e.g., to a user). Display device 160 may include, for example, a display, a holographic device, or a projector, and corresponding control circuitry for controlling one of the display, holographic device, and projector. According to an embodiment, display device 160 may include touch circuitry adapted to detect touch or sensor circuitry (e.g., a pressure sensor) adapted to measure the intensity of the force caused by touch.

[0034] The audio module 170 can convert sound into electrical signals and vice versa. According to an embodiment, the audio module 170 can obtain sound via the input device 150, or output sound via the sound output device 155 or headphones of an external electronic device (e.g., electronic device 102) that is directly (e.g., wired) or wirelessly connected to the electronic device 101.

[0035] Sensor module 176 can detect the operating state of electronic device 101 (e.g., power or temperature) or the environmental state outside electronic device 101 (e.g., user state), and then generate an electrical signal or data value corresponding to the detected state. According to embodiments, sensor module 176 may include, for example, a gesture sensor, gyroscope sensor, atmospheric pressure sensor, magnetic sensor, accelerometer, grip sensor, proximity sensor, color sensor, infrared (IR) sensor, biometric sensor, temperature sensor, humidity sensor, or illuminance sensor.

[0036] Interface 177 may support one or more specific protocols used to enable direct (e.g., wired) or wireless connection between electronic device 101 and external electronic device (e.g., electronic device 102). Depending on the implementation, interface 177 may include, for example, a High Definition Multimedia Interface (HDMI), a Universal Serial Bus (USB) interface, a Secure Digital Card (SD) interface, or an audio interface.

[0037] Connection end 178 may include a connector, through which electronic device 101 can be physically connected to an external electronic device (e.g., electronic device 102). According to embodiments, connection end 178 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

[0038] The tactile module 179 can convert electrical signals into mechanical stimulation (e.g., vibration or motion) or electrical stimulation that can be recognized by a user through his touch or kinesthesia. According to embodiments, the tactile module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulator.

[0039] Camera module 180 can capture still or moving images. Depending on the implementation, camera module 180 may include one or more lenses, an image sensor, an image signal processor, or a flash.

[0040] The power management module 188 manages the power supply to the electronic device 101. According to embodiments, the power management module 188 may be implemented as at least a portion of, for example, a power management integrated circuit (PMIC).

[0041] Battery 189 can power at least one component of electronic device 101. According to embodiments, battery 189 may include, for example, a non-rechargeable primary battery, a rechargeable rechargeable battery, or a fuel cell.

[0042] Communication module 190 can support the establishment of a direct (e.g., wired) or wireless communication channel between electronic device 101 and external electronic devices (e.g., electronic device 102, electronic device 104, or server 108), and perform communication via the established communication channel. Communication module 190 may include one or more communication processors capable of operating independently of processor 120 (e.g., application processor (AP)) and support direct (e.g., wired) or wireless communication. According to embodiments, communication module 190 may include wireless communication module 192 (e.g., cellular communication module, short-range wireless communication module, or Global Navigation Satellite System (GNSS) communication module) or wired communication module 194 (e.g., local area network (LAN) communication module or power line communication (PLC) module). One of these communication modules can communicate with an external electronic device via a first network 198 (e.g., a short-range communication network such as Bluetooth, Wi-Fi Direct, or Infrared Data Association (IrDA)) or a second network 199 (e.g., a long-range communication network such as a cellular network, the Internet, or a computer network (e.g., a LAN or a wide area network (WAN))). These various types of communication modules can be implemented as a single component (e.g., a single chip) or as multiple components (e.g., multiple chips) that are separate from each other. The wireless communication module 192 can identify and verify the electronic device 101 in the communication network (such as the first network 198 or the second network 199) using user information (e.g., the International Mobile Subscriber Identity (IMSI)) stored in the user identification module 196.

[0043] Antenna module 197 can transmit or receive signals or power to or from the outside of electronic device 101 (e.g., external electronic device). According to an embodiment, antenna module 197 may include an antenna comprising a radiating element formed of a conductive material or conductive pattern formed in or on a substrate (e.g., a PCB). According to an embodiment, antenna module 197 may include multiple antennas. In this case, at least one antenna suitable for a communication scheme used in a communication network (such as a first network 198 or a second network 199) can be selected from the multiple antennas by, for example, communication module 190 (e.g., wireless communication module 192). Signals or power can then be transmitted or received between communication module 190 and external electronic device via the selected at least one antenna. According to an embodiment, additional components besides the radiating element (e.g., a radio frequency integrated circuit (RFIC)) may be additionally incorporated into antenna module 197.

[0044] At least some of the aforementioned components can be interconnected and communicate signals (e.g., commands or data) between them via an inter-peripheral communication scheme (e.g., bus, general purpose input / output (GPIO), serial peripheral interface (SPI), or mobile industrial processor interface (MIPI)).

[0045] According to an embodiment, commands or data can be sent or received between electronic device 101 and external electronic device 104 via server 108 connected to the second network 199. Each of electronic device 102 and electronic device 104 can be a device of the same type as electronic device 101, or a device of a different type. According to an embodiment, all or some operations that would be performed on electronic device 101 can be performed on one or more of external electronic devices 102, external electronic devices 104, or server 108. For example, if electronic device 101 is required to automatically perform a function or service, or is required to perform a function or service in response to a request from a user or another device, electronic device 101 may request the one or more external electronic devices to perform at least a portion of the function or service, instead of running the function or service, or electronic device 101 may request the one or more external electronic devices to perform at least a portion of the function or service in addition to running the function or service. Upon receiving the request, the one or more external electronic devices may perform at least a portion of the requested function or service, or perform additional functions or services related to the request, and transmit the result of the execution to electronic device 101. Electronic device 101 may provide the result as at least a partial response to the request, either with further processing or without further processing. For this purpose, technologies such as cloud computing, distributed computing, or client-server computing may be used.

[0046] The electronic device according to various embodiments can be one of a variety of types of electronic devices. Electronic devices may include, for example, portable communication devices (e.g., smartphones), computer devices, portable multimedia devices, portable medical devices, cameras, wearable devices, or home appliances. According to embodiments of this disclosure, the electronic device is not limited to those described above.

[0047] It should be understood that the various embodiments of this disclosure and the terminology used therein are not intended to limit the technical features set forth herein to the specific embodiments, but rather to include various changes, equivalents, or substitutions for the respective embodiments. In the description of the drawings, similar reference numerals may be used to refer to similar or related elements. It will be understood that nouns in the singular form corresponding to terms may include one or more things unless the relevant context clearly indicates otherwise. As used herein, each of the phrases such as “A or B,” “at least one of A and B,” “at least one of A or B,” “A, B, or C,” “at least one of A, B, and C,” and “at least one of A, B, or C” may include any one or all possible combinations of items enumerated together with a corresponding phrase of the plurality of phrases. As used herein, terms such as “first” and “second” or “first” and “second” may be used to simply distinguish one component from another and do not limit the components in other respects (e.g., importance or order). It will be understood that, whether the terms “operably” or “communically” are used or not, if an element (e.g., a first element) is referred to as “combined with another element (e.g., a second element),” “combined to another element (e.g., a second element),” “connected to another element (e.g., a second element),” or “connected to another element (e.g., a second element)”, it means that the element can be directly (e.g., wiredly) connected to the other element, wirelessly connected to the other element, or connected to the other element via a third element.

[0048] As used herein, the term "module" can include units implemented in hardware, software, or firmware, and is used interchangeably with other terms (e.g., "logic," "logic block," "part," or "circuit"). A module can be a single integrated component adapted to perform one or more functions, or the smallest unit or part of that single integrated component. For example, depending on the implementation, a module can be implemented as an application-specific integrated circuit (ASIC).

[0049] The various embodiments described herein can be implemented as software (e.g., program 140) containing one or more instructions readable by a machine (e.g., electronic device 101) stored in a storage medium (e.g., internal memory 136 or external memory 138). For example, under the control of a processor, the processor (e.g., processor 120) of the machine (e.g., electronic device 101) can invoke and execute at least one of the one or more instructions stored in the storage medium, with or without the use of one or more other components. This enables the machine to operate to perform at least one function according to the invoked at least one instruction. The one or more instructions may include code generated by a compiler or code executable by an interpreter. Machine-readable storage media can be provided in the form of non-transitory storage media. The term "non-transitory" simply means that the storage medium is a tangible device and does not include signals (e.g., electromagnetic waves), but this term does not distinguish between data being stored semi-permanently in the storage medium and data being temporarily stored in the storage medium.

[0050] According to various embodiments, methods according to this disclosure may be included and provided in a computer program product. The computer program product can be traded as a product between a seller and a buyer. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., a compact disk read-only memory (CD-ROM)) or via an app store (e.g., the Play Store). TM The computer program product may be published online (e.g., downloaded or uploaded), or may be distributed directly between two user devices (e.g., smartphones) (e.g., downloaded or uploaded). If published online, at least a portion of the computer program product may be temporarily generated, or at least a portion of the computer program product may be temporarily stored in a machine-readable storage medium (such as the memory of a manufacturer's server, an app store's server, or a forwarding server).

[0051] According to various embodiments, each of the above components (e.g., a module or program) may include a single entity or multiple entities. According to various embodiments, one or more of the above components may be omitted, or one or more other components may be added. Optionally or additionally, multiple components (e.g., modules or programs) may be integrated into a single component. In this case, according to various embodiments, the integrated component may still perform the one or more functions of each of the multiple components in the same or similar manner as the corresponding component of the multiple components performed one or more functions prior to integration. According to various embodiments, the operations performed by a module, program, or other component may be performed sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations may be run in a different order or omitted, or one or more other operations may be added.

[0052] Reference Figure 1 In the structure of the described electronic device 101, the communication module 190 may include various hardware components for performing communication. For example, the communication module 190 may include, Figure 2 The components shown will be described below.

[0053] Figure 2 A communication module in an electronic device according to an embodiment is shown.

[0054] refer to Figure 2 The communication module 190 includes a memory 210, a CP 220, an RFIC 230, an envelope tracking integrated circuit (ETIC) 240, and a radio frequency front end (RFFE) 250.

[0055] The memory 210 can store information, data and / or various commands required for controlling and operating the components of the communication module 190 in the electronic device.

[0056] CP 220 can control communications or process digital signals. CP 220 can control the operation or status of RFIC 230 and / or RFFE 250. For example, CP 220 can determine the operation or status of components included in RFIC 230 and / or RFFE 250, and can generate commands for controlling operation or status. CP 220 may include a protocol stack for performing operations within layers defined in communication standards. The processor CP 220 can generate and interpret messages based on formats defined in standards, thereby interacting with the network. CP 220 can process digital / baseband signals. CP 220 can perform channel coding / decoding and / or modulation / demodulation.

[0057] CP 220 can provide control over the state of tuning RFIC 230 and / or RFFE 250 based on the modulation scheme and / or waveform of the transmitted signal output through at least one antenna in electronic device 101. When RFFE 250 is operating, CP 220 can measure the characteristics (e.g., linearity or efficiency) or performance of RFFE 250. CP 220 can use the coupled signal received from RFFE 250 to monitor the real-time power (i.e., instantaneous power) output from the target frequency channel, and can monitor the real-time power output from adjacent frequency channels to measure the adjacent channel power ratio and determine signal quality.

[0058] CP 220 can perform modulation / demodulation on baseband signals and / or intermediate frequency (IF) signals transmitted from RFIC 230. For example, CP 220 can output a signal to RFIC 230 to set the modulation scheme.

[0059] RFIC 230 can perform signal band conversion to transmit or receive signals. For example, CP 220 can process analog / IF or RF signals. CP 220 includes a digital-to-analog converter (DAC) 231, a first mixer 233, a first amplifier 235, a second amplifier 237, and a second mixer 239. Signals input from CP 220 can be transmitted to ETIC 240 via DAC 231. Modulated signals input from CP 220 can be carried at carrier frequency fc and can be output as RF signals via the first amplifier 235.

[0060] RFFE 250 amplifies the RF signal provided from RFIC 230 or the signal received through the antenna. RFFE 250 includes a power amplifier (PA) 251, a low-noise amplifier (LNA) 253, a transmit / receive switch 255, a filter 257, and a coupler 259. PA 251 amplifies the RF signal provided from RFIC 230. LNA 253 amplifies the received signal. Transmit / receive switch 255 connects a path including PA 251 to filter 257 when transmitting a signal, and connects a path including LNA 253 to filter 257 when receiving a signal. Filter 257 filters the signal according to the frequency band of the signal used in communication. Coupler 259 can be used to monitor the instantaneous power of the transmitted signal to be output in real time and to monitor the power of adjacent channels by coupling the transmitted signal to be output to the antenna.

[0061] The ETIC 240 can use power supplied by the power supply (VBATT) to generate an output voltage to be applied to PA 251 to amplify the PA251 signal. The ETIC 240 includes a DC-DC converter 241 and a line regulator 243. When the ETIC 240 employs envelope tracking (ET) technology, the power supplied by the power supply VBATT can be converted into a DC power supply of a specified voltage by the DC-DC converter 241 according to the waveform of the transmitted signal output through the antenna in the electronics, and can be transmitted to the line regulator 243 via line 245.

[0062] When a signal is input from DAC 231 of RFIC 230, linear regulator 243 can process the voltage of the applied DC power supply to generate an output voltage that follows an envelope waveform, and this voltage can be applied to RFFE 250 along line 249. ET technology corresponds to the technique of reducing power consumption by applying the envelope signal of the output voltage of ETIC 240 to be applied to PA 251. To reduce power consumption caused by the increase in PAPR of the RF signal, the operating efficiency of PA 251 can be improved.

[0063] When using average power point tracking (APT) technology with a fixed supply voltage, the linear regulator 243 can be omitted in the ETIC 240. The DC-DC 241 can output a specified voltage DC power supply based on the waveform of the transmitted signal to be output through at least one antenna in the electronic device, and can output it to the RFFE 250 via lines 247 and 249.

[0064] In the output voltage applied by ETIC 240 to RFFE 250 to amplify the input signal (e.g., an RF signal) of PA 251, when the output waveform of the transmitted signal to be output through the antenna in the electronic device is a first waveform (e.g., DFT-s-OFDM), the first output voltage Vcc_DFT can be generated by using the first DC power supply of the first voltage VBB_DFT as the internal voltage of ETIC 240. For example, when the output waveform of the transmitted signal to be output through the antenna in the electronic device is a first waveform, ETIC 240 can apply the first DC power supply through DC-DC 241 as the internal voltage of ETIC 240, thus generating the first output voltage Vcc_DFT for amplifying the input signal and applying it to PA 251.

[0065] In the output voltage applied by ETIC 240 to RFFE 250 to amplify the input signal of PA 251, when the output waveform of the transmit signal to be sent through the antenna in the electronic device is a second waveform (e.g., CP-OFDM), the second output voltage Vcc_CP can be generated by using a second DC power supply, VBB_CP, as the internal voltage of ETIC 240. When the output waveform of the transmit signal to be sent through the antenna in the electronic device is a second waveform, ETIC 240 can apply a second DC power supply via DC-DC 241 as its internal voltage, thus generating the second output voltage Vcc_CP for amplifying the input signal of PA 251 and applying it to PA 251.

[0066] For example, the second voltage VBB_CP can be a value obtained by applying a displacement or offset value specified for the first voltage VBB_DFT.

[0067] In order to adjust the internally applied voltage for the operation of ETIC 240 according to the output waveform and / or modulation scheme of the transmitted signal to be transmitted through the antenna, ETIC 240 can generate an output voltage by applying a DC power supply with a reference voltage VBB_ref, which is configured to amplify the power level corresponding to the output waveform and / or modulation scheme under the control of CP 220.

[0068] For example, memory 210 may store a lookup table (LUT) in the form shown in Table 1 below, which matches a reference voltage value VBB_ref corresponding to a plurality of corresponding output power levels used to amplify the signal.

[0069] Table 1

[0070] Power Level 1 LUT#1 LUT#1 LUT#1 ... ... ... ... Power level N LUT#N LUT#N LUT#N

[0071] Referring to Table 1, a specified LUT can be matched and stored for the frequency band managed by the corresponding communication standard associated with the corresponding power level. For ease of explanation, the following description uses, for example, an LUT corresponding to a specified frequency band managed in the 5G communication standard. However, this implementation is not limited to this and can be applied to another frequency band and / or another communication standard.

[0072] For example, each LUT may include information for generating a transmit signal output at a corresponding power level, such as PA bias, digital predistortion (DPD) table, and / or reference voltage VBB_ref.

[0073] When the CP 220 must output a transmit signal at power level 1, depending on the output waveform and / or modulation scheme, a specified shift or offset value can be applied by using another reference voltage value VBB_ref#3 in another lookup table LUT#3 obtained by shifting the lookup table by a specified step, instead of applying the reference voltage value VBB_ref#1 to be matched by referring to the aforementioned lookup table (e.g., LUT#1) corresponding to the output power level 1 of the transmit signal.

[0074] When the CP 220 must output a transmit signal at power level 1, the voltage value calculated by the calculation formula, which is applied to the displacement or offset value corresponding to the output waveform and / or modulation scheme, can be applied to the reference voltage value VBB_ref#1 in the lookup table (e.g., LUT#1) corresponding to the output power level 1 of the transmit signal, based on the output waveform and / or modulation scheme.

[0075] At least one of the aforementioned components may include a Mobile Industrial Processor Interface (MIPI) for exchanging signals with at least one of the other aforementioned components.

[0076] Figure 3 A communication module in an electronic device according to an embodiment is shown.

[0077] refer to Figure 3 The communication module 190 includes a memory 310, a CP 320, an RFIC 330, an ETIC 340, and an RFFE 350.

[0078] The memory 310 can store information, data and / or various commands required for controlling and operating the components of the communication module 190 in the electronic device.

[0079] CP 320 can control communication or process digital signals. CP 320 can control the operation or status of RFIC 330 and / or RFFE 350. CP 320 can determine the operation or status of components included in CP 320, RFIC 330 and / or RFFE 350, and can generate commands for controlling operation or status. Figure 3 The CP 320 is similar in configuration and functionality to Figure 2 The redundant description of CP 220 will be omitted in this article.

[0080] RFIC 330 can perform signal band switching to transmit or receive signals. RFIC 330 can process analog / IF or RF signals. RFIC 330 includes DAC 331, first mixer 333, first amplifier 335, second amplifier 337, and second mixer 339. Signals input from CP 320 can be transmitted to ETIC 340 via DAC 331. Furthermore, modulated signals input from CP 320 can be carried at carrier frequency fc and output as RF signals via first amplifier 335.

[0081] The ETIC 340 can generate an output voltage for amplifying the transmitted signal using a power supply applied by the power supply VBATT. The ETIC 340 includes a DC-DC converter. The ETIC 340 can apply multiple voltages to the RFFE 350 via lines _1 340-1, _2 340-2, _3 340-3, ..., _N 340-N using a power supply applied by the power supply VBATT, namely voltage_1VBB_1, voltage_2VBB_2, voltage_3VBB_3, ..., voltage_NVBB_N. These multiple voltages (i.e., voltage_1VBB_1, voltage_2VBB_2, voltage_3VBB_3, ..., voltage_NVBB_N) can be different from each other. Multiple voltages (i.e., voltage_1VBB_1, voltage_2VBB_2, voltage_3VBB_3, ... voltage_NVBB_N) can have different levels (dB), such as 1.5, 3.5, 5.5, ... or 1~3, 3~5, 5~7...

[0082] Each LUT in Table 1 (i.e., LUT#1, ..., LUT#N) may include information for generating a transmit signal that outputs at a corresponding power level, such as PA bias, DPD meter, and / or multiple reference voltages.

[0083] When the processor 320 outputs a transmit signal at power level 1, depending on the output waveform and / or modulation scheme, the voltage value obtained by applying a specified displacement or offset value for each reference voltage value can be applied by applying multiple other reference voltage values ​​VBB_ref#3_1, ..., VBB_ref#3_N in another lookup table LUT#3. This other lookup table LUT#3 is obtained by shifting the lookup table by a specified step, rather than by applying multiple reference voltage values ​​VBB_ref#1_1, ..., VBB_ref#1_N by referring to the aforementioned lookup table (e.g., LUT#1) corresponding to the output power level 1 of the transmit signal.

[0084] When the CP 320 outputs a transmit signal at power level 1, it can apply multiple voltage values ​​calculated by applying the displacement or offset values ​​corresponding to the output waveform and / or modulation scheme to multiple reference voltage values ​​VBB_ref#1_1, ..., VBB_ref#1_N in a lookup table (e.g., LUT#1) corresponding to the output power level 1 of the transmit signal, based on the output waveform and / or modulation scheme.

[0085] When the output waveform of the transmitted signal of the electronic device is a first waveform (e.g., DFT-s-OFDM), the ETIC 340 can use the power supplied by the power supply VBATT to apply a first DC power supply to the RFFE 350 through line_1 340-1, line_2 340-2, line_3 340-3, ... line_N 340-N. This first DC power supply is at least one of a plurality of voltages, namely first voltage_1VBB_DFT_1, first voltage_2VBB_DFT_2, first voltage_3VBB_DFT_3, ... first voltage_NVBB_DFT_N.

[0086] When the output waveform of the transmitted signal of the electronic device is a second waveform (e.g., CP-OFDM), the ETIC 340 can use the power supplied by the power supply VBATT to apply a second DC power supply to the RFFE 350 through lines _1 340-1, _2 340-2, _3 340-3, ..., _N 340-N. This second DC power supply is at least one of a plurality of voltages, namely second voltage _1VBB_CP_1, second voltage _2VBB_CP_2, second voltage _CP_3 VBB_3, ..., second voltage _N VBB_CP_N.

[0087] The second voltages _1VBB_CP_1, _2VBB_CP_2, _2VBB_CP_3, ..., _NVBB_CP_N can be values ​​obtained by applying displacement or offset values ​​specified for the first voltages _1VBB_DFT_1, _2VBB_DFT_2, _3VBB_DFT_3, ..., _3VBB_DFT_3, ..., _NVBB_DFT_N respectively.

[0088] RFFE 350 amplifies RF signals provided from RFIC 330 or signals received through an antenna. RFFE 350 includes PA 351, LNA 353, transmit / receive switch 355, linear regulator 356, filter 357, and coupler 359. Linear regulator 356 uses voltages VBB_1, VBB_2, VBB_3, ... VBB_N applied to RFFE 350 through lines _1 340-1, _2 340-2, _3 340-3, ..., _N 340-N to generate an output voltage Vcc and transmit it to PA 351. Linear regulator 356 includes a first linear regulator 356-1, a second linear regulator 356-2, a third linear regulator 356-3, ..., an Nth linear regulator 356-N. PA 351 can amplify the RF signal input from RFIC 330 using the output voltage Vcc transmitted from linear regulator 356. LNA 353 can be used to amplify the received signal. Transmit / receive switch 355 can connect a path including PA 351 to filter 357 when transmitting a signal, and can also connect a path including LNA 353 to filter 357 when receiving a signal. Filter 357 can filter the signal according to the signal frequency band used in the communication. Coupler 359 can be used to monitor the instantaneous power of the transmitted signal to be output in real time, and to monitor the power of adjacent channels by coupling the transmitted signal.

[0089] At least one of the aforementioned components may include a MIPI for exchanging signals with at least one of the other aforementioned components.

[0090] According to an embodiment, the electronic device may include: a power amplifier (PA) configured to amplify an input signal; a voltage generator that generates one or more output voltages to be applied to the PA to amplify the input signal; an antenna that outputs a transmit signal based on the signal amplified by the PA; and a processor (e.g., a processor CP) that controls the PA and the voltage generator.

[0091] The CP can determine whether the output waveform of the transmitted signal output through the antenna is a first waveform (e.g., DFT-s-OFDM) or a second waveform (e.g., CP-OFDM). If the output waveform is the first waveform, the voltage generator can be allowed to generate a first output voltage (e.g., Vcc_DFT) for amplifying the first waveform by applying one or more first voltages (e.g., VBB_DFT) to a first DC power supply. If the output waveform is the second waveform, the voltage generator can be allowed to generate a second output voltage (e.g., VCC_CP) for amplifying the second waveform by applying a second DC power supply with a second voltage (e.g., VBB_CP) shifted by a specified level relative to the first voltage, based on the peak power of the first waveform and the peak power of the second waveform.

[0092] The electronic device may also include a memory storing a LUT, the LUT including a list of a plurality of first voltage values ​​applied in association with a plurality of target power levels for amplifying the input signal.

[0093] The LUT may include a first LUT, which includes a first voltage stored in association with a first power level. A second voltage may be obtained from a second LUT, which is stored in association with a second power level shifted within the LUT based on the peak power difference between the first and second waveforms.

[0094] The second voltage can be calculated based on the peak power difference between the first and second waveforms by applying the displacement value relative to the first voltage based on the power and voltage ratio.

[0095] The CP can determine the modulation scheme of the transmitted signal to be sent via the antenna. If the modulation scheme corresponds to a reference modulation scheme, a first output voltage or a second output voltage can be generated by applying one of a first voltage and a second voltage according to the output waveform of the transmitted signal.

[0096] If the modulation scheme is not the reference modulation scheme, the CP can apply a voltage calculated by applying a specified displacement value of a first voltage and a second voltage applied according to the output waveform, based on the peak power difference between the modulation scheme and the reference modulation scheme.

[0097] The electronic device may also include a memory storing a Level Under Test (LUT), the LUT including a list of multiple first voltage values ​​applied, each associated with a plurality of target power levels for amplifying the input signal. The LUT may include a first LUT and a second LUT, the first LUT including a first voltage stored associated with a first power level, and the second LUT including a second voltage associated with a second power level shifted within the LUT based on the peak power difference between a first waveform and a second waveform. If the modulation scheme is not a reference modulation scheme, a third voltage according to the modulation scheme can be obtained from a third LUT shifted from the first or second LUT, based on the peak power difference between the modulation scheme and the reference modulation scheme.

[0098] The CP can monitor the power of the transmitted signal by coupling the transmitted signal. If the instantaneous power of the transmitted signal, calculated based on the monitoring, increases or decreases by a level greater than or equal to a specified level, a first output voltage or a second output voltage can be generated by applying a third voltage that is shifted by a specified level relative to one of the first voltage and the second voltage.

[0099] The CP can obtain information about the output waveform of the transmitted signal from the control signals received from the base station.

[0100] According to an embodiment, the electronic device may include: a power amplifier (PA) configured to amplify an input signal; a voltage generator (e.g., Figure 2 Voltage generator 240 or Figure 3 The voltage generator 340 generates one or more output voltages to be applied to the PA to amplify the input signal; and the CP controls the PA and the voltage generator. For example, the CP can identify the modulation scheme of the input signal. If the modulation scheme is a reference modulation scheme, the voltage generator can be allowed to generate a reference output voltage for amplifying the input signal by applying a reference DC power supply with one or more reference voltages. If the modulation scheme is not a reference modulation scheme, the voltage generator can be allowed to generate an output voltage for amplifying the input signal by applying a DC power supply with a voltage shifted by a specified level, based on the peak power of the modulation scheme and the peak power of the reference modulation scheme.

[0101] The output waveform can include either DFT-s-OFDM output waveform or CP-OFDM output waveform.

[0102] Figure 4 This is a graph showing a comparison of PAPR with the transmitted signal waveform of the electronic device according to an embodiment.

[0103] In post-LTE communication network systems, frequency efficiency is improved by applying OFDM technology, which transmits several subcarriers in an overlapping manner. Therefore, PARP is significantly increased compared to conventional technologies.

[0104] Electronic devices can transmit RF signals to base stations via UL communication, and these signals can be amplified by a power amplifier (PA) to deliver sufficient power levels. For example, APT technology using a fixed supply voltage consumes a significant amount of power as heat. Compared to APT, ET technology can reduce the power consumption of electronic devices. Due to the high PAPR characteristics of OFDM, DFT-s-OFDM has been developed in LTE to reduce PAPR. Therefore, electronic devices can use DFT-s-OFDM, and base stations can use CP-OFDM to manage different waveforms. DFT-s-OFDM has disadvantages in terms of base station resource management but increases the output power of electronic devices. CP-OFDM has advantages in terms of base station resource management, but its disadvantage is reduced output power. In 5G UL communication, electronic devices support two types of waveforms, and base stations can adaptively manage the output waveform of electronic devices according to purpose and circumstances.

[0105] Regarding the two output waveforms mentioned above, as follows: Figure 4As shown, the PAPR 401 of the output waveform of CP OFDM and the PAPR 403 of the output waveform of DFT-s-OFDM can have a PAPR difference of approximately 2 dB.

[0106] Figure 5A It is a graph showing the applied voltage for power amplification of the transmitted signal waveform of the electronic device according to an embodiment.

[0107] Figure 5B It is a graph showing the applied voltage for power amplification of the transmitted signal waveform of the electronic device according to an embodiment.

[0108] refer to Figure 5A and 5B Regarding the application to Figure 2 PA 251 or Figure 3 The output voltages Vcc, Vcc(CP_OFDM)505, and Vcc(DFT-s-OFDM)507 of PA 351 vary depending on the waveform of the transmitted signal to be output through the antenna in the electronic device. For the DFT-s-OFDM output waveform, if the internal applied voltage of the ETIC used to generate the two waveforms is set to, for example, a second voltage 501 for the lowest voltage of output Vcc(CP_OFDM)505, the current consumption can be increased to the extent corresponding to the difference between the second voltage 501 and the first voltage 503, which is the lowest voltage for output Vcc(DFT-s-OFDM)507.

[0109] For the DFT-s-OFDM output waveform, the minimum voltage used for output Vcc(DFT-s-OFDM)505 can be set to the first voltage 503. Therefore, for the DFT-s-OFDM output waveform, the current consumption can be increased to the extent corresponding to the difference between the second voltage 501 and the first voltage 503, which is the minimum voltage used for output Vcc(DFT-s-OFDM)507.

[0110] For the CP_OFDM output waveform, the minimum voltage used for output Vcc(CP_OFDM)507 can be set to the second voltage 501.

[0111] For example, the second voltage 501 used for output Vcc(CP_OFDM) 507 can be a value obtained by applying a displacement or offset value with a 2dB relative to the first value 503 used for output Vcc(DFT-s-OFDM) 505, such as... Figure 4 As shown.

[0112] Figure 6 It is a graph showing the effect of reducing power consumption in an electronic device according to the embodiment.

[0113] refer to Figure 6 Unlike the CP-OFDM output waveform in 5G, the DFT-s-OFDM output waveform can be used to amplify the transmit signal output during UL operation. In this case, ETIC can be performed differently (e.g., Figure 2 ETIC 240 or Figure 3 The ETIC 340 is switched so that the applied voltages of ETIC 240 and 340, which are used to amplify the transmit signal of the DFT-s-OFDM output waveform, are applied to the first voltage VBB_DFT to generate the first output voltage Vcc_DFT, and the first output voltage Vcc_DFT is used to amplify the output power of the RF signal by using the PA. Therefore, when comparing the current and power values ​​based on the envelope peak consumed by the DC power supply of the first voltage VBB_DFT as the applied voltage set for the DFT-s-OFDM output waveform, as Figure 6 As shown, the efficiency and power consumption 603 achievable from the 5G DFT-s-OFDM UL scheme are similar to those of LTE, rather than the power consumption 601 of traditional technologies.

[0114] Figure 7 This is a flowchart illustrating the operation of adjusting the applied voltage for transmitting signal power amplification based on the output waveform of an electronic device according to an embodiment.

[0115] refer to Figure 7 The processor (e.g., CP) of an electronic device can adjust the applied voltage based on the output waveform of the transmitted signal of the electronic device.

[0116] In step 701, the processor identifies the output waveform of the transmitted signal by a control signal sent from the base station. The output waveform of the transmitted signal may be a first waveform (e.g., DFT-s-OFDM) or a second waveform (e.g., CP-OFDM), and may be configured by the base station and received in an electronic device by a control signal.

[0117] In step 703, the processor determines whether the output waveform is the first waveform in order to amplify the input signal (RF signal) to be input to the PA, and if the output waveform is the first waveform, then in step 705, the processor generates a first output voltage Vcc_DFT for amplifying the input signal by using a first DC power supply with a first voltage VBB_DFT.

[0118] For example, if the output waveform is the first waveform, referring to Table 1 above, the first voltage VBB_DFT used to amplify the input signal can be obtained from a lookup table corresponding to the target output power level of the transmitted signal. If the target output power level of the transmitted signal is 2, then the first voltage VBB_DFT can be obtained as the reference voltage VBB_ref#1 obtained from the corresponding lookup table LUT#2.

[0119] If it is determined in step 703 that the output waveform is not the first waveform, then in step 707, the processor generates a second output voltage Vcc_CP for amplifying the input signal by using a second DC power supply with a second voltage VBB_CP.

[0120] For example, if the output waveform is the second waveform, referring to Table 1 above, the second voltage VBB_CP can be obtained from a lookup table shifted by a specified power level step (e.g., LUT#3) instead of from a lookup table corresponding to the target output power level of the transmitted signal (e.g., LUT#1). If the target output power level of the transmitted signal is 2, the second voltage VBB_CP can be obtained from another lookup table shifted by a specified power level step, LUT#4, instead of from the corresponding lookup table LUT#2. If the power level steps of the lookup tables differ from each other by approximately 1 dB, the level step to be shifted in the lookup table can be set to, for example, 2 steps when the difference between the maximum value of the target output level of the DFT-s-OFDM waveform transmitted signal and the maximum value of the target output level of the CP-OFDM waveform transmitted signal, or the difference between the PAPR of the DFT-s-OFDM waveform transmitted signal and the PAPR of the CP-OFDM waveform transmitted signal, is approximately 2 dB.

[0121] Referring to Table 1 above, the second voltage VBB_CP used to amplify the input signal to output the second waveform of the transmitted signal can be a value obtained by applying a displacement or offset value specified for the voltage obtained from a lookup table (e.g., LUT#1) that corresponds to the target output power level of the transmitted signal (e.g., the first voltage VBB_DFT obtained by reference voltage VBB_ref#1).

[0122] The specified displacement or offset value can be calculated using an expression relating power and voltage, as shown in equation (1) below.

[0123]

[0124] In equation (1), x represents the power level difference between the CP-OFDM scheme and the DFT-s-OFDM scheme, which shows a difference of approximately 2 dB. According to equation (1) above, the specified displacement value... The second voltage VBB_CP, which shows an approximately 2dB difference relative to the DFT-s-OFDM scheme, can be calculated by multiplying by the first voltage VBB-DFT. The reference voltage VBB_ref#1 in lookup table LUT#1 is applied to the first voltage VBB-DFT. If the power level is N, then... The first voltage VBB_DFT can be multiplied to calculate the second voltage VBB_CP, and the reference voltage VBB_ref#N in the lookup table LUT#N corresponding to the power level N is applied to the first voltage VBB_DFT.

[0125] Figure 8 This is a flowchart illustrating the operation of adjusting the applied voltage for transmitting signal power amplification according to an electronic device-based modulation scheme based on an embodiment.

[0126] refer to Figure 8 The processor can adjust the applied voltage based on the modulation scheme of the transmitted signal sent through the antenna in the electronic device.

[0127] In step 801, the processor identifies the modulation scheme of the transmitted signal by means of control signals sent from the base station. The modulation scheme of the transmitted signal may include quadrature phase shift keying (QPSK), 16-quadrature amplitude modulation (QAM), 64QAM, or 256QAM.

[0128] In step 803, the processor determines whether the modulation scheme is a reference modulation scheme, and if so, in step 805, the processor generates an output voltage to be applied to the PA to amplify the PA input signal by amplifying the input signal of the PA using a DC power supply of the reference voltage VBB_ref, based on the modulation scheme. For example, the reference modulation scheme can be set to QPSK with a low code rate.

[0129] For example, referring to Table 1 above, a lookup table corresponding to the target output power level of the transmitted signal can be obtained for the reference voltage VBB_ref used to amplify the transmitted signal modulated by QPSK (which is the reference modulation scheme). If the target output power level of the transmitted signal is 2, the reference voltage VBB_ref#2 to be matched can be obtained from the corresponding lookup table LUT#2.

[0130] If the processor determines in step 803 that the modulation scheme is not the reference modulation scheme, then in step 807, the processor compares the reference modulation scheme and the modulation scheme, and generates an output voltage to be applied to the PA to amplify the PA input signal by using a reference voltage in a lookup table, which corresponds to a power level shifted by a specified power level from a lookup table corresponding to the target output power level of the transmitted signal.

[0131] For example, if not a reference modulation scheme, referring to Table 1 above, the applied voltage can be obtained from a lookup table shifted by a specified power level step (e.g., LUT#2) instead of from a lookup table corresponding to the target output power level of the transmitted signal (e.g., LUT#1). This applied voltage is used to generate the output voltage applied to the PA to amplify the PA input signal. If the target output power level of the transmitted signal is 1, a reference voltage VBB_ref#2 obtained from a lookup table LUT#2 shifted by a specified power level step can be applied as the applied voltage for amplifying the input signal instead of from the corresponding lookup table LUT#1. If the power level steps of the lookup tables differ from each other by approximately 1 dB, then when the level difference of the peak output signal envelope between modulation schemes (e.g., QPSK, 16QAM, 64QAM, or 256QAM) is approximately 1 dB, a reference value in a lookup table shifted by 1 output power level relative to the lookup table based on the reference modulation scheme (e.g., QPSK) can be applied to each modulation scheme. When the QPSK is set to the reference modulation scheme, if the modulation scheme is 16QAM, the reference voltage VBB_ref#2 in lookup table LUT#2, shifted by one step relative to lookup table LUT#1 corresponding to output power level 1, can be applied as the applied voltage for amplifying the transmitted signal. When the QPSK is set to the reference modulation scheme, if the modulation scheme is 64QAM, the reference voltage VBB_ref#3 in lookup table LUT#3, shifted by two steps relative to lookup table LUT#1 corresponding to output power level 1, can be applied as the applied voltage for amplifying the transmitted signal. When the QPSK is set to the reference modulation scheme, if the modulation scheme is 250QAM, the reference voltage VBB_ref#4 in lookup table LUT#4, shifted by three steps relative to lookup table LUT#1 corresponding to output power level 1, can be applied as the applied voltage for amplifying the transmitted signal.

[0132] If the identified modulation scheme is not the reference modulation scheme, referring to Table 1 above, the applied voltage can be a value obtained by applying a displacement or offset value specified for the voltage obtained from a lookup table (e.g., LUT#1) corresponding to the target output power level of the transmitted signal. This applied voltage is used to generate an output voltage applied to the PA to amplify the PA input signal.

[0133] The specified displacement or offset value can be calculated using the expression for the power-voltage relationship shown in equation (1) above. When the difference between the 16QAM scheme and QPSK is approximately 1 dB, the specified displacement value is calculated according to equation (1) above. The applied voltage for the 16QAM scheme can be calculated by multiplying by the reference voltage VBB_ref of the QPSK, which serves as the reference modulation scheme. When the difference between the 64QAM scheme and the QPSK is shown to be approximately 2dB, the specified displacement value is calculated according to formula (1) above. The applied voltage for the 64QAM scheme can be calculated by multiplying by the QPSK reference voltage VBB_ref. When the difference between the 256QAM scheme and the QPSK is shown to be approximately 3dB, the specified displacement value is given according to equation (1) above. The applied voltage for the 256QAM scheme can be calculated by multiplying it by the QPSK reference voltage VBB_ref.

[0134] Figure 9 This is a flowchart illustrating the operation of adjusting the applied voltage for transmitting signal power amplification based on the output waveform and modulation scheme of the electronic device according to an embodiment.

[0135] refer to Figure 9 In step 901, the processor of the electronic device (e.g., CP) identifies the output waveform and modulation scheme of the transmitted signal of the electronic device.

[0136] For example, the processor can identify the output waveform and / or modulation scheme of the transmitted signal by control signals sent from the base station. The output waveform of the transmitted signal can be a first waveform (e.g., DFT-s-OFDM) or a second waveform (e.g., CP-OFDM), and can be configured by the base station and received in an electronic device by control signals.

[0137] If the output waveform is identified as the first waveform in step 903, then in step 905, the processor identifies whether the modulation scheme of the transmitted signal is the reference modulation scheme.

[0138] If the modulation scheme in step 905 is a reference modulation scheme, then in step 907, the processor generates a first output voltage Vcc_DFT for amplifying the transmit signal of the amplified electronic device by using a first DC power supply with a first voltage VBB_DFT of the reference voltage of the first waveform's reference modulation scheme, thereby amplifying the PA input signal. For example, the reference modulation scheme can be set to QPSK with a low code rate.

[0139] Referring to Table 1 above, the first voltage VBB_DFT can be obtained from the lookup table corresponding to the target output power level of the transmitted signal. The first voltage VBB_DFT is a reference voltage used to amplify the transmitted signal using QPSK modulation, which is the reference modulation scheme for the first waveform.

[0140] If it is identified in step 905 that the modulation scheme is not the reference modulation scheme, then in step 909, the processor compares the reference modulation scheme and the modulation scheme, and generates an output voltage for amplifying the transmitted signal of the electronic device by using a reference voltage VBB_ref from a lookup table corresponding to a power level shifted by a specified power level from the lookup table corresponding to the target output power level of the transmitted signal. For example, if the output waveform corresponds to a first waveform, but the modulation scheme is a 16QAM modulation scheme, referring to Table 1 above, the applied voltage for amplifying the transmitted signal can be obtained from a lookup table (e.g., LUT#2) shifted by a specified power level step (e.g., 1 step long), instead of from the lookup table corresponding to the target output power level of the transmitted signal (e.g., LUT#1).

[0141] If it is identified in step 903 that the output waveform is not the first waveform, for example, the output waveform is the second waveform, then the processor identifies in step 909 whether the second waveform is a reference modulation scheme.

[0142] If the modulation scheme of the transmitted signal is identified as a reference modulation scheme in step 911, then in step 913, the processor applies a second DC power supply, VBB_CP, for the second waveform as a reference voltage value for the reference modulation scheme. For example, if the modulation scheme is the reference modulation scheme, a second output voltage Vcc_CP for amplifying the transmitted signal of the electronic device can be generated using the second DC power supply, VBB_CP, which is the applied voltage for amplifying the second waveform of the PA input signal. The reference modulation scheme can be set to QPSK with a low code rate.

[0143] Referring to Table 1 above, the second voltage VBB_CP used to amplify the reference voltage of the PA input signal of QPSK modulation can be obtained, for example, from a lookup table (e.g., LUT#3) shifted by two steps from a lookup table (e.g., LUT#1) corresponding to the target output power level (e.g., power level 1) of the transmitted signal, where QPSK modulation is the reference modulation scheme for the second waveform.

[0144] If it is identified in step 911 that the modulation scheme is not the reference modulation scheme, then in step 915, the processor applies a value of a specified displacement to the second DC power supply of the second voltage VBB_CP by comparing the modulation scheme with the reference modulation scheme.

[0145] From a lookup table (e.g., LUT#3) that shifts (e.g., 2 steps) the target output power level (e.g., level 1) of the transmitted signal according to the second waveform to amplify the PA input signal, a reference voltage VBB_ref#4 in a lookup table (e.g., LUT#4) corresponding to a power level shifted (e.g., 1 step) based on a comparison between the modulation scheme and a reference modulation scheme can be applied to generate a second output voltage Vcc_CP for amplifying the transmitted signal of the electronic device.

[0146] Referring to Table 1 above, apart from the reference modulation scheme, the applied voltage for amplifying, for example, the 16QAM modulation scheme, can be obtained from a lookup table (e.g., LUT#4) shifted by a specified power level step (e.g., 3 steps), rather than from a lookup table (e.g., LUT#1) corresponding to the target output power level of the transmitted signal.

[0147] Figure 10 This is a flowchart illustrating, according to an embodiment, the operation of adaptively readjusting the applied voltage for power amplification of a transmitted signal adjusted based on the output waveform and / or modulation scheme of the electronic device according to instantaneous power and / or signal quality.

[0148] refer to Figure 10 In step 1001, the processor of the electronic device (e.g., CP) identifies the output waveform and / or modulation scheme of the transmitted signal of the electronic device.

[0149] In step 1003, the processor determines and applies an initial applied voltage for amplifying the PA input signal power based on the output waveform and / or modulation scheme. Since the initial applied voltage determined based on the output waveform and / or modulation scheme has been described in detail in the above example, its details will be omitted here.

[0150] In step 1005, the processor monitors the power of the transmitted signal in the current channel via power feedback to identify the instantaneous power. For example, the processor can couple the transmitted signal to be output via the RFFE coupler and monitor the power of the transmitted signal to be output via power feedback.

[0151] If the instantaneous power increase or decrease exceeds a set reference level (e.g., approximately 1 dB), the processor determines in step 1007 that it has failed the standard, and in step 1013 applies a voltage value shifted according to the reference level increased or decreased from the initial voltage. For example, the reference level can be set to an appropriate value depending on the design of the electronic device. If the instantaneous power increase is greater than or equal to the reference level, the applied voltage can be changed by, for example, applying a lookup table shifted by one step (e.g., LUT#2) to a lookup table applied to the initial applied voltage (e.g., LUT#1).

[0152] If the instantaneous power increase or decrease level is not greater than or equal to the set reference level, the processor determines in step 1007 that it passes the standard and identifies the signal quality of the transmitted signal in step 1009. For example, the processor can identify the signal quality by using the adjacent channel power ratio, which is calculated by comparing the power value of the transmitted signal in the current channel monitored by the power feedback mentioned above with the power value in the adjacent channel.

[0153] If the signal quality of the transmitted signal increases or decreases by a level greater than, for example, a specified reference level, the processor determines in step 1011 that it has failed the standard, and in step 1013, it changes the applied voltage by applying a voltage value shifted according to the signal quality that increases or decreases based on the initial applied voltage. For example, if the signal quality decreases by a level greater than or equal to the reference level, the applied voltage can be changed by, for example, applying a lookup table shifted by one step (e.g., LUT#2) to a lookup table applied to the initial applied voltage (e.g., LUT#1).

[0154] If the signal quality improvement or reduction level is not greater than or equal to the reference level, the processor determines in step 1011 that it passes the standard and maintains and applies the initial applied voltage.

[0155] As described above, a method and electronic device for adjusting the applied voltage for amplifying a transmitted signal are provided, which can adaptively adjust the management of the applied voltage for amplifying the signal based on different waveforms and / or modulation schemes to reduce current consumption. Therefore, heat generation in the electronic devices can also be reduced.

[0156] A method and electronic device for adjusting the applied voltage for amplifying the transmitted signal are also provided, which can reduce current consumption by adaptively adjusting the management of the voltage for amplifying the transmitted signal based on different waveforms and / or modulation schemes.

[0157] A method and electronic device for adjusting the applied voltage for amplifying a transmitted signal are also provided, which can be used to reduce current consumption by adaptively adjusting voltage management according to the instantaneous power and / or signal quality of the transmitted signal.

[0158] While this disclosure has been specifically shown and described with reference to certain embodiments thereof, those skilled in the art will understand that various changes in form and detail may be made therein without departing from the spirit and scope of this disclosure as defined by the appended claims and their equivalents.

Claims

1. An electronic device comprising: The power amplifier PA is configured to amplify the signal; An envelope tracking ET circuit is configured to generate an output voltage to be applied to the PA; The antenna is configured to transmit amplified signals; Communication processor CP; as well as Memory, storage instructions, which, when executed by the CP alone or together, cause the electronic device to: Receive control information related to the output waveform of the signal from the base station. Based on the control information, it is determined whether the output waveform is the first waveform or the second waveform. When the output waveform is the first waveform, a first input voltage is supplied to the ET circuit, causing the ET circuit to apply a first output voltage to the PA. When the output waveform is the second waveform: Based on the peak power supplied to the ET circuit when the output waveform is the first waveform and the peak power supplied to the ET circuit when the output waveform is the second waveform, a first displacement value is identified. The second input voltage is identified based on the first input voltage and the first displacement value, and The second input voltage is supplied to the ET circuit, causing the ET circuit to apply a second output voltage to the PA. 2.The electronic device of claim 1, wherein, The memory stores a lookup table (LUT), which includes input voltage values ​​determined based on the modulation scheme or the output waveform. 3.The electronic device of claim 2, wherein, The LUT is distinguished based on the signal's transmit power level and communication scheme. 4.The electronic device of claim 1, wherein The first displacement value is determined based on the difference between the peak power supplied to the ET circuit when the output waveform is the first waveform and the peak power supplied to the ET circuit when the output waveform is the second waveform.

5. The electronic device according to claim 1, wherein, The instruction also causes the electronic device to: Determine the modulation scheme of the signal to be transmitted through the antenna, and When the modulation scheme corresponds to a reference modulation scheme, the first input voltage or the second input voltage is supplied to the ET circuit based on the output waveform of the signal.

6. The electronic device according to claim 5, wherein, The instruction also causes the electronic device to: When the modulation scheme is not the reference modulation scheme, a second displacement value is identified based on the peak power corresponding to the reference modulation scheme and the peak power corresponding to the modulation scheme. The input voltage for the ET circuit is determined based on the second displacement value.

7. The electronic device according to claim 5, wherein, The modulation schemes include quadrature phase shift keying (QPSK), 16-quadrature amplitude modulation (QAM), 64QAM, or 256QAM.

8. The electronic device according to claim 1, wherein, The instruction also causes the electronic device to: Monitor the instantaneous power of the signal. When the instantaneous power change is greater than a specified value and the output waveform is the first waveform, the input voltage for the ET circuit is determined based on the first input voltage and the second displacement value. When the instantaneous power change is greater than the specified value and the output waveform is the second waveform, the input voltage for the ET circuit is determined based on the second input voltage and the second displacement value.

9. The electronic device according to claim 1, wherein, The first output voltage corresponds to the first waveform, and The second output voltage corresponds to the second waveform.

10. The electronic device according to claim 1, wherein, The output waveform includes the Discrete Fourier Transform Spread Spectrum Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) output waveform or the Cyclic Prefix OFDM (CP-OFDM) output waveform.

11. A method performed by an electronic device, the method comprising: Receive control information related to the output waveform of the signal from the base station; Based on the control information, determine whether the output waveform is a first waveform or a second waveform; When the output waveform is the first waveform, a first input voltage is supplied to the envelope tracking ET circuit, such that the ET circuit applies a first output voltage to the power amplifier PA, the PA being configured to amplify the signal; When the output waveform is the second waveform: Based on the peak power supplied to the ET circuit when the output waveform is the first waveform and the peak power supplied to the ET circuit when the output waveform is the second waveform, a first displacement value is identified. The second input voltage is identified based on the first input voltage and the first displacement value, and The second input voltage is supplied to the ET circuit, causing the ET circuit to apply a second output voltage to the PA.

12. The method according to claim 11, wherein, The memory of the electronic device stores a lookup table (LUT), which includes an input voltage value determined based on a modulation scheme or the output waveform.

13. The method according to claim 12, wherein, The LUT is distinguished based on the signal's transmit power level and communication scheme.

14. The method according to claim 11, wherein, The first displacement value is determined based on the difference between the peak power supplied to the ET circuit when the output waveform is the first waveform and the peak power supplied to the ET circuit when the output waveform is the second waveform.

15. The method of claim 11, further comprising: Determine the modulation scheme for the signal to be transmitted via the antenna of the electronic device; as well as When the modulation scheme corresponds to a reference modulation scheme, the first input voltage or the second input voltage is supplied to the ET circuit based on the output waveform of the signal.

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