Method for controlling transmit power of wireless communications terminal, and wireless communications terminal

Patent metadata

Field	Value
Publication number	US-11265820-B2
Application number	US-202016781532-A
Country	US
Kind code	B2
Filing date	Feb 4, 2020
Priority date	Sep 29, 2015
Publication date	Mar 1, 2022
Grant date	Mar 1, 2022

Abstract

A method for controlling a transmit power of a terminal, and a terminal, where the method and the terminal include, working states of a first antenna and a second antenna may be monitored, and then a transmit power of the first antenna or that of the second antenna may be controlled according to a preset correspondence. Therefore, according to the method and the terminal, a transmit power of an antenna in a working state in the first antenna and the second antenna may be accurately controlled. If the transmit power is less than a standard transmit power, a Specific Absorption Rate (SAR) can be reduced.

First claim

What is claimed is:

1. A method for controlling a transmit power of a wireless communications terminal that comprises a first controller, a second controller, a first antenna, and a second antenna, wherein the method comprises:
determining, by the first controller, that the first antenna is in a working state;
obtaining, by the first controller, a first transmit power of the first antenna according to a first preset correspondence between the working state and the first transmit power;
sending, by the first controller, the first transmit power to the second controller; and
controlling, by the second controller, the first antenna to perform transmission according to the first transmit power.

2. The method of claim 1 , further comprising:
determining, by the first controller, that the second antenna is switched to a working state;
obtaining, by the first controller, a second transmit power of the second antenna according to a second preset correspondence;
sending, by the first controller, the second transmit power to the second controller; and
controlling, by the second controller, the second antenna to perform transmission according to the second transmit power.

3. The method of claim 2 , wherein the first controller determines that the second antenna is switched to the working state by:
determining, by the first controller, that the wireless communications terminal switches from the first antenna to the second antenna to perform voice communication; and
determining, by the first controller, a voice communication type of the second antenna,
wherein the first controller obtains the second transmit power of the second antenna according to the second preset correspondence by obtaining, based on the voice communication type of the second antenna by the first controller, the second transmit power according to a preset correspondence between the voice communication type of the second antenna and the second transmit power.

4. The method of claim 3 , wherein the voice communication type of the second antenna comprises a first voice communication type and a second voice communication type, and wherein the second voice communication type has a higher communications level than the first voice communication type.

5. The method of claim 2 , wherein the first controller determines that the second antenna is switched to the working state by:
determining, by the first controller, that the wireless communications terminal switches from the first antenna to the second antenna to perform voice communication; and
determining, by the first controller, a voice communication type of the second antenna,
wherein the wireless communications terminal further comprises an optical proximity sensor,
wherein the method further comprises determining, by the first controller, that the optical proximity sensor is triggered, and
wherein the second correspondence is used to determine, based on the voice communication type of the second antenna and in a case that the optical proximity sensor is triggered, the second transmit power.

6. The method of claim 1 , wherein the first controller determines that the first antenna is in the working state by:
determining, by the first controller, that the wireless communications terminal performs voice communication using the first antenna; and
determining, by the first controller, a voice communication type of the first antenna,
wherein the first controller obtains the first transmit power of the first antenna according to the first preset correspondence by obtaining, based on the voice communication type of the first antenna by the first controller, the first transmit power of the first antenna according to a preset correspondence between the voice communication type of the first antenna and the transmit power of the first antenna.

7. The method of claim 6 , wherein the voice communication type of the first antenna comprises a first voice communication type and a second voice communication type, and wherein the second voice communication type has a higher communications level than the first voice communication type.

8. The method of claim 6 , wherein the first controller is configured to:
receive the voice communication type of the first or the second antenna reported by the second controller; and
determine the voice communication type of the first or the second antenna.

9. The method of claim 1 , wherein the first controller determines that the first antenna is in the working state by:
determining, by the first controller, that the wireless communications terminal performs voice communication using the first antenna; and
determining, by the first controller, a voice communication type of the first antenna,
wherein the wireless communications terminal further comprises an optical proximity sensor,
wherein the method further comprises determining, by the first controller, that the optical proximity sensor is triggered, and
wherein the first correspondence is used to determine, based on the voice communication type of the first antenna and in a case that the optical proximity sensor is triggered, the first transmit power of the first antenna.

10. The method of claim 1 , wherein the first transmit power of the first antenna is less than a corresponding standard transmit power of the first antenna, or wherein the second transmit power of the second antenna is less than a corresponding standard transmit power of the second antenna.

11. A wireless communications terminal, comprising:
a first controller;
a second controller;
a first antenna coupled to the first controller and the second controller; and
a second antenna coupled to the first controller,
wherein the first controller is configured to:
determine that the first antenna is in a working state;
obtain a first transmit power of the first antenna according to a first preset correspondence between the working state and the first transmit power; and
send the first transmit power to the second controller, and

wherein the second controller is configured to control the first antenna to perform transmission according to the first transmit power.

12. The wireless communications terminal of claim 11 , wherein the first controller is further configured to:
determine that the second antenna is switched to a working state;
obtain a second transmit power of the second antenna according to a second preset correspondence; and
send the second transmit power to the second controller, and
wherein the second controller is further configured to control the second antenna to perform transmission according to the second transmit power.

13. The wireless communications terminal of claim 12 , wherein the first controller determines that the second antenna is switched to the working state by:
determining that the wireless communications terminal switches from the first antenna to the second antenna to perform voice communication; and
determining a voice communication type of the second antenna, and
wherein the first controller obtains the second transmit power of the second antenna according to the second preset correspondence by obtaining, based on the voice communication type of the second antenna, the second transmit power of the second antenna according to a preset correspondence between the voice communication type of the second antenna and the second transmit power.

14. The wireless communications terminal of claim 13 , wherein the voice communication type of the second antenna comprises a first voice communication type and a second voice communication type, and wherein the second voice communication type has a higher communications level th

Assignees

• Honor Device Co Ltd

Inventors

• Luo Jian
• Jin Hui
• Yao Songping
• Li Hongyu
• Li Yingwei
• Zhang Hongming
• Du Xuyang

Classifications

• H04B7/0602

  using antenna switching (H04B7/0686 takes precedence; antenna beam directivity switching H01Q3/24) · CPC title

• H04B7/06 Primary

  at the transmitting station · CPC title

• H04B7/0452

  Multi-user MIMO systems · CPC title

• H04W52/288

  taking into account the usage mode, e.g. hands-free, data transmission or telephone · CPC title

• H04W52/28 Primary

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