Method for compensating for power of transmission signal, and electronic device for supporting same

Patent metadata

Field	Value
Publication number	US-2025202511-A1
Application number	US-202519066009-A
Country	US
Kind code	A1
Filing date	Feb 27, 2025
Priority date	Aug 30, 2022
Publication date	Jun 19, 2025
Grant date	—

Abstract

An electronic device comprises: a battery; a communication module including a first processor; and a second processor electrically connected to the battery and the communication module. The first processor detects a transmission event of a Tx signal; requests voltage level information about the battery from the second processor in response to detecting the transmission event of the Tx signal; and receives the voltage level information about the battery from the second processor in response to requesting the voltage level information about the battery. The communication module compensates for the transmission power level of the Tx signal on the basis of the voltage level information about the battery received by the first processor.

First claim

1 . An electronic device comprising:
a battery; a communication module comprising a first processor; a second processor electrically connected to the battery and the communication module; and memory storing instructions that, when executed, cause: the first processor to: detect a transmission event of a Tx signal; request voltage level information about the battery from the second processor in response to detecting the transmission event of the Tx signal; and receive the voltage level information about the battery from the second processor in response to requesting the voltage level information about the battery, and wherein, when the instructions are executed, the instructions further cause the communication module to compensate for a transmission power level of the Tx signal based on the voltage level information about the battery received by the first processor.

2 . The electronic device of claim 1 , further comprising a power management module which is electrically connected to the battery and which comprises a fuel gauge circuit,
wherein, when the instructions are executed, the instructions further cause the first processor to: determine whether a data interface exists between the first processor and the power management module in response to detecting the transmission event of the Tx signal; and request the voltage level information about the battery from the second processor in response to determining that no data interface exists.

3 . The electronic device of claim 2 , wherein, when the instructions are executed, the instructions further cause the second processor to:
obtain the voltage level information about the battery from the power management module in response to receiving the request for the voltage level information about the battery from the first processor; and transmit the obtained voltage level information about the battery to the first processor.

4 . The electronic device of claim 1 , wherein the first processor is configured to:
request the voltage level information about the battery from the second processor according to a first period while the transmission event of the Tx signal is maintained in response to the voltage level information about the battery received from the second processor indicating a voltage level being within a specified low voltage level range; and request the voltage level information about the battery from the second processor according to a second period longer than the first period while the transmission event of the Tx signal is maintained in response to the voltage level information about the battery received from the second processor indicating a voltage level being within a specified high voltage level range.

5 . The electronic device of claim 1 , wherein the communication module further comprises a transceiver comprising an RF driver and a first power amplification module, and
the RF driver is configured to: receive the voltage level information about the battery from the first processor; and determine a compensation value for compensating for the transmission power level of the Tx signal based on the voltage level information about the battery.

6 . The electronic device of claim 5 , wherein the RF driver is configured to:
determine the compensation value as a first magnitude in response to the voltage level information about the battery indicating the voltage level being within the specified high voltage level range; and determine the compensation value as a second magnitude greater than the first magnitude in response to the voltage level information about the battery indicating the voltage level being within the specified low voltage level range.

7 . The electronic device of claim 5 , wherein the RF driver is configured to control the first power amplification module to increase the transmission power level of the Tx signal by the determined compensation value and output the increased transmission power level from the first power amplification module.

8 . The electronic device of claim 7 , further comprising at least one of:
a second power amplification module which processes a signal of a first frequency band; and a third power amplification module which processes a signal of a second frequency band, and wherein the Tx signal, whose transmission power level is increased by the determined compensation value and is output from the first power amplification module, is input to the second power amplification module or the third power amplification module according to a frequency band of the Tx signal.

9 . A method for compensating for a transmission power of a Tx signal, the method comprising:
detecting a transmission event of a Tx signal by a first processor comprised in a communication module of an electronic device; requesting, by the first processor, voltage level information about a battery of the electronic device from a second processor of the electronic device in response to the detecting of the transmission event of the Tx signal; receiving, by the first processor, the voltage level information about the battery from the second processor in response to the requesting of the voltage level information about the battery; and compensating, by the communication module, for a transmission power level of the Tx signal based on the voltage level information about the battery received by the first processor.

10 . The method for compensating for the transmission power of the Tx signal of claim 9 , wherein the requesting of the voltage level information about the battery comprises:
determining, by the first processor, whether a data interface exists between the first processor and a power management module comprising a fuel gauge circuit of the electronic device in response to the detecting of the transmission event of the Tx signal; and requesting, by the first processor, the voltage level information about the battery from the second processor in response to determining that no data interface exists.

11 . The method for compensating for the transmission power of the Tx signal of claim 10 , further comprising:
obtaining, by the second processor, the voltage level information about the battery from the power management module in response to receiving the request for the voltage level information about the battery from the first processor; and transmitting, by the second processor, the obtained voltage level information about the battery to the first processor.

12 . The method for compensating for the transmission power of the Tx signal of claim 9 , wherein the requesting of the voltage level information about the battery comprises:
requesting, by the first processor, the voltage level information about the battery from the second processor according to a first period while the transmission event of the Tx signal is maintained in response to the voltage level information about the battery received from the second processor indicating a voltage level being within a specified low voltage level range; and requesting, by the first processor, the voltage level information about the battery from the second processor according to a second period longer than the first period while the transmission event of the Tx signal is maintained in response to the voltage level information about the battery received from the second processor indicating a voltage level being within a specified high voltage level range.

13 . The method for compensating for the transmission power of the Tx signal of claim 9 , wherein the compensating for the transmission power level of the Tx signal comprises:
receiving the voltage level information about the battery from the first process

Assignees

• Samsung Electronics Co Ltd

Inventors

• Noh Juseok
• Jeong Daechul
• Kim Seongmin

Classifications

• H04B1/04 Primary

  Circuits · CPC title

• H04B1/0475

  with means for limiting noise, interference or distortion (H04B1/0483 takes precedence) · CPC title

• H04W52/52 Primary

  using AGC [Automatic Gain Control] circuits or amplifiers · CPC title

• H04B2001/0416

  having gain or transmission power control · CPC title

• H04B1/0346

  Hand-held transmitters · CPC title