Electronic device for adjusting transmission power based on SAR and method for operating same

Patent metadata

Field	Value
Publication number	US-12477474-B2
Application number	US-202318507234-A
Country	US
Kind code	B2
Filing date	Nov 13, 2023
Priority date	Aug 14, 2019
Publication date	Nov 18, 2025
Grant date	Nov 18, 2025

Abstract

An electronic device according to various embodiments may include: at least one antenna; and at least one communication processor configured to support first network communication with a first network and second network communication with a second network different from the first network. The at least one communication processor may be configured to: identify a first cumulative SAR value based on radiation of a communication signal corresponding to the first network communication via a first part of the at least one antenna and a second cumulative SAR value based on radiation of a communication signal corresponding to the second network communication via a second part of the at least one antenna; and adjust one of a transmission intensity of a first communication signal corresponding to the first network communication or a transmission intensity of a second communication signal corresponding to the second network communication, based on a designated condition satisfied by the first cumulative SAR value and the second cumulative SAR value.

First claim

What is claimed is:

1 . An electronic component comprising:
memory storing at least one instruction; and at least one communication processor configured to support first network communication with a first network and second network communication with a second network different from the first network, wherein the at least one instruction, when executed by the at least one communication processor, causes the electronic component to at least:
identify, based at least on a current timepoint of a designated time period, a first current cumulative SAR (Specific Absorption Rate) value corresponding to the first network communication and a second current cumulative SAR value corresponding to the second network communication, wherein the first and second current cumulative SAR values correspond to cumulative transmission power from a start timepoint to the current timepoint of the designated time period,
estimate a first future cumulative SAR value corresponding to the first network during a remaining time of the designated time period, and a second future cumulative SAR value corresponding to the second network during the remaining time of the designated time period, and
based at least on the first current cumulative SAR value, the second current cumulative SAR value, the first future cumulative SAR value and the second future cumulative SAR value, control first transmission power corresponding to the first network to be limited to a first back off transmission power and control second transmission power corresponding to the second network to be limited to a second back off transmission power, so that a sum of the first and second current cumulative SAR values and the first and second future cumulative SAR values during designated time period is maintained at a value less than or equal to a threshold cumulative SAR value of the designated time period,
wherein, during the remaining time, an allocated amount of SAR associated with the first back off transmission power is to be greater than an allocated amount of SAR associated with the second back off transmission power.

2 . The electronic component of claim 1 , wherein the control of the first transmission power corresponding to the first network and the control of the second transmission power corresponding to the second network are performed at the same time point.

3 . The electronic component of claim 1 , wherein the control of the first transmission power corresponding to the first network and the control of the second transmission power corresponding to the second network are performed at different time points.

4 . The electronic component of claim 1 , wherein the at least one instruction, when executed by the at least one communication processor, further causes the electronic component to:
identify the first current cumulative SAR value by summing accumulated SAR value corresponding to the first network communication associated with at least one past timepoint and a first maximum SAR value associated with the first network communication corresponding to the current timepoint, and identify the second current cumulative SAR value by summing accumulated SAR value corresponding to the second network communication associated with the at least one past timepoint and a second maximum SAR value associated with the second network communication corresponding to the current timepoint.

5 . The electronic component of claim 1 , wherein a SAR generated based at least on the first back off transmission power is greater than a SAR generated based at least on the second back off transmission power.

6 . The electronic component of claim 1 , wherein the at least one instruction, when executed by the at least one communication processor, further causes the electronic component to:
adjust a first maximum intensity corresponding to the first network communication and a second maximum intensity corresponding to the second network communication, such that the first transmission power corresponding to the first network is limited to the first back off transmission power and the second transmission power corresponding to the second network is limited to the second back off transmission power.

7 . The electronic component of claim 1 , wherein at least one of the first back off transmission power and the second back off transmission power is to be identified based at least on whether a voice call service is enabled or not.

8 . The electronic component of claim 1 , wherein at least one of the first back off transmission power and the second back off transmission power is to be identified based at least on whether a predefined application is executed or not.

9 . The electronic component of claim 1 , wherein the first network communication is LTE and the second network communication is NR.

10 . An electronic component comprising:
memory storing at least one instruction; and at least one communication processor configured to support first network communication with a first network and second network communication with a second network, wherein the at least one instruction, when executed by the at least one communication processor, causes the electronic component to at least: identify, based at least on a current timepoint of a designated time period, a first current cumulative SAR (Specific Absorption Rate) value corresponding to the first network communication and a second current cumulative SAR value corresponding to the second network communication, wherein the first and second current cumulative SAR values correspond to cumulative transmission power from a start timepoint to the current timepoint of the designated time period, based at least on the first current cumulative SAR value and the second current cumulative SAR value, identify a first back off transmission power corresponding to the first network and a second back off transmission power corresponding to the second network to be limited during a remaining time of the designated time period, and control first transmission power corresponding to the first network based at least on the first back off transmission power and control second transmission power corresponding to the second network based at least on second back off transmission power, such that a sum of cumulative SAR values corresponding to the first network communication and the second network communication during designated time period is maintained at a value less than or equal to a threshold cumulative SAR value of the designated time period, wherein an allocated amount of SAR associated with the first back off transmission power for the first network is greater than an allocated amount of SAR associated with the second back off transmission power for the second network.

11 . The electronic component of claim 10 , wherein the control of the first transmission power corresponding to the first network and the control of the second transmission power corresponding to the second network are performed at the same time point.

12 . The electronic component of claim 10 , wherein the at least one instruction, when executed by the at least one communication processor, further causes the electronic component to:
identify the first current cumulative SAR value by summing accumulated SAR value corresponding to the first network associated with at least one past timepoint and a first maximum SAR value associated with the first network corresponding to the current timepoint, and identify the second current cumulative SAR value by summing accumulated SAR value corresponding to the second network associated with the at least one past timepoint and a second maximum SAR value associated with the second network corresponding

Assignees

• Samsung Electronics Co Ltd

Inventors

• Cha Jaemoon
• Kim Seonyun
• Lee Yeonjoo
• Park Suyoung
• Hwang Sunmin

Classifications

• H04W88/06

  adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals · CPC title

• H04W52/28

  using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non-transmission · CPC title

• H04W52/52

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

• H04W52/34

  TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading · CPC title

• H04W52/367

  Power values between minimum and maximum limits, e.g. dynamic range · CPC title