Apparatus and method for controlling power

Patent metadata

Field	Value
Publication number	US-10038465-B2
Application number	US-201715671963-A
Country	US
Kind code	B2
Filing date	Aug 8, 2017
Priority date	Sep 9, 2016
Publication date	Jul 31, 2018
Grant date	Jul 31, 2018

Abstract

An electronic device includes a communication unit; a memory storing instructions; and a processor, coupled to the communication unit and memory, to execute instructions to determine, based on at least one of a state of the electronic device and a distance between the electronic device and a user, a value of specific absorption rate (SAR) corresponding to the value of SAR that corresponds to a power of the electronic device; determine, based on the SAR, an average SAR on a designated time interval; determine, in response to the average SAR being greater than a first designated value, a reference value limiting a maximum power of the electronic device; and transmit a signal based on the determined reference value through the communication unit, wherein the reference value includes a value obtained by subtracting a second designated value from a value of maximum output power of the electronic device.

First claim

What is claimed is:

1. An electronic device, comprising:
a communication unit;
a memory storing instructions; and
a processer, coupled to the communication unit and the memory, configured to execute the instructions to:
determine, based on at least one of a state of the electronic device and a distance between the electronic device and a user of the electronic device, a value of specific absorption rate (SAR) corresponding to a power of the electronic device;
determine, based on the determined value of SAR, an average value of SAR on a designated time interval;
determine, in response to the average value of SAR being greater than a first designated value, a reference value limiting a maximum power of the electronic device; and
transmit a signal based on the determined reference value through the communication unit,
wherein the reference value comprises a value obtained by subtracting a second designated value from a value of maximum output power of the electronic device.

2. The electronic device of claim 1 , wherein the processor is further configured to execute the instructions to:
determine a SAR table based on at least one of the state of the electronic device and the distance between the electronic device and the user of the electronic device; and
determine, based on the determined SAR table, the value of SAR corresponding to the value of SAR that corresponds to the power of the electronic device.

3. The electronic device of claim 1 , wherein the processor is further configured to execute the instructions to:
determine a SAR table set corresponding to the state of the electronic device; and
determine, based on the distance between the electronic device and the user of the electronic device, the SAR table among the determined SAR table set.

4. The electronic device of claim 1 , wherein the processor is further configured to execute the instructions to:
identify a transmission rate of one or more uplink packets; and
based on the identified transmission rate, determine whether to change a transmission cycle of the signal of the electronic device.

5. The electronic device of claim 4 , wherein the processor is further configured to execute the instructions to:
if the transmission rate is less than a designated minimum value, change a transmission cycle of the signal from a first value to a second value,
wherein the second value is greater than the first value; and
determine the reference value with the value of maximum output power.

6. The electronic device of claim 5 , wherein the second value is determined based on the second designated value, and
wherein the second designated value is determined based on at least one of the state of the electronic device and the distance between the electronic device and the user of the electronic device.

7. The electronic device of claim 5 , wherein the processor is further configured to execute the instructions to:
if the transmission rate on the second value is less than the designated minimum value, change the transmission cycle of the signal from the second value to the first value; and
determine the reference value,
wherein the reference value comprises the value obtained by subtracting the second designated value from the value of maximum output power of the electronic device.

8. The electronic device of claim 5 , wherein the second value is determined based on an equation as follows:

Transmission
⁢

⁢
Cycle

=

Floor
⁢

⌈

10

P
backoff

10

⌉

wherein Transmission Cycle is the second value, P backoff is the second designated value, and Floor is a function to round an input number down below a decimal point.

9. The electronic device of claim 4 , wherein the processor is further configured to execute the instructions to:
determine the transmission cycle of the signal with the first value, in response to the transmission rate being greater than a designated maximum value; and
determine that the reference value comprises the value obtained by subtracting the second designated value from the value of maximum output power of the electronic device.

10. The electronic device of claim 1 , wherein the processor is further configured to execute the instructions to determine the reference value with the value of maximum output power in response to the determined average value of SAR being less than the second value.

11. A method of an electronic device, the method comprising:
determining, based on at least one of a state of the electronic device and a distance between the electronic device and a user of the electronic device, a value of specific absorption rate (SAR) corresponding to a power of the electronic device;
determining, based on the determined value of SAR, an average value of SAR on a designated time interval;
determining, in response to the average value of SAR being greater than a first designated value, a reference value limiting a maximum power of the electronic device; and
transmitting a signal based on the determined reference value,
wherein the reference value comprises a value obtained by subtracting a second designated value from a value of maximum output power of the electronic device.

12. The method of claim 11 , further comprising:
determining a SAR table based on at least one of the state of the electronic device and the distance between the electronic device and a user of the electronic device; and
determining, based on the determined SAR table, the value of SAR corresponding to the value of SAR that corresponds to the power of the electronic device.

13. The method of claim 11 , further comprising:
determining a SAR table set corresponding to the state of the electronic device; and
determining, based on the distance between the electronic device and the user of the electronic device, the SAR table among the determined SAR table set.

14. The method of claim 11 , further comprising:
identifying a transmission rate of one or more uplink packets; and
based on the identified transmission rate, determining whether to change a transmission cycle of the signal of the electronic device.

15. The method of claim 14 , further comprising:
if the transmission rate is less than a designated minimum value, changing a transmission cycle of the signal from a first value to a second value, wherein the second value is greater than the first value; and
determining the reference value with the value of maximum output power.

16. The method of claim 15 , wherein the second value is determined based on the second designated value, and
wherein the second designated value is determined based on at least one of the state of the electronic device and the distance between the electronic device and the user of the electronic device.

17. The method of claim 15 , further comprising:
if the transmission rate on the second value is less than the designated minimum value, changing the transmission cycle of the signal from the second value to the first value; and
det

Assignees

• Samsung Electronics Co Ltd
• Samsung Electronics Co Ltd

Inventors

• Park Yong-Jun
• Cho Namjun

Classifications

• H04W52/228

  using past power values or information · CPC title

• H04B1/3838 Primary

  Arrangements for reducing RF exposure to the user, e.g. by changing the shape of the transceiver while in use · CPC title

• H04W52/367 Primary

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

• H04W52/283

  Power depending on the position of the mobile · CPC title

• H04W52/226

  using past references to control power, e.g. look-up-table · CPC title