Method and device for controlling transmitting power

Patent metadata

Field	Value
Publication number	US-9807705-B2
Application number	US-201415034945-A
Country	US
Kind code	B2
Filing date	Feb 13, 2014
Priority date	Nov 7, 2013
Publication date	Oct 31, 2017
Grant date	Oct 31, 2017

Abstract

Provided are a method and device for controlling transmitting power. According to the method, when it is detected that a target object approaches a mobile terminal, a position, which the target object approaches, on the mobile terminal is determined, and an optimal sensing area for a Specific Absorption Rate (SAR) reducing antenna of the mobile terminal to sense a movement of the target object is selected according to the position; movement information of the target object is acquired by sensing the movement of the target object in the optimal sensing area by the SAR reducing antenna, and the transmitting power of the mobile terminal is controlled according to the movement information. The technical solution can improve the sensing distance and range of the SAR reducing antenna, namely, improve the sensitivity of the SAR reducing antenna.

First claim

What is claimed is:

1. A method for controlling transmitting power, comprising:
when a mobile terminal detects that a target object approaches the mobile terminal, determining, by the mobile terminal, which position, on the mobile terminal, is the target object approaching towards, and selecting, by the mobile terminal, according to the position, an optimal sensing area of a Specific Absorption Rate (SAR) reducing antenna of the mobile terminal for the SAR reducing antenna to sense a movement of the target object; and
acquiring, by the mobile terminal, movement information of the target object by sensing the movement of the target object in the optimal sensing area by the SAR reducing antenna, and controlling the transmitting power of the mobile terminal according to the movement information, wherein acquiring, by the mobile terminal, the movement information of the target object by sensing the movement of the target object in the optimal sensing area by the SAR reducing antenna, and controlling, by the mobile terminal, the transmitting power of the mobile terminal according to the movement information comprises:
switching, by the mobile terminal, a logical selection switch to connect different access ports preset on the SAR reducing antenna to the SAR reducing antenna;
sensing, by the mobile terminal, the movement of the target object in the optimal sensing area through various access ports of the SAR reducing antenna, and respectively acquiring movement information of the target object from the various access ports;
when the movement information acquired from all of the various access ports fails to reach a preset threshold, not adjusting, by the mobile terminal, the transmitting power of the mobile terminal; when movement information acquired from a certain one of the various access ports reaches the preset threshold, switching, by the mobile terminal, the logical selection switch to the access port, and controlling, by the mobile terminal, the transmitting power of the mobile terminal according to the movement information acquired from the access port; and when movement information acquired from a plurality of access ports reaches the preset threshold, comparing, by the mobile terminal, the movement information acquired from the plurality of access ports, switching, by the mobile terminal, the logical selection switch to an access port of optimal sensing according to a comparison result, and controlling, by the mobile terminal, the transmitting power of the mobile terminal according to the movement information acquired from the access port.

2. The method as claimed in claim 1 , further comprising:
re-determining, by the mobile terminal, which position, on the mobile terminal, is the target object approaching towards at a preset time interval, and judging, by the mobile terminal, whether the position acquired currently is the same as that determined in a previous period; and
when the position acquired currently is the same as that determined in the previous period, using, by the mobile terminal, an optimal sensing area determined in the previous period as the current optimal sensing area; when the position acquired currently is different from that determined in the previous period, re-determining, by the mobile terminal, according to the position acquired currently, the optimal sensing area of the SAR reducing antenna of the mobile terminal for the SAR reducing antenna to sense the movement of the target object.

3. The method as claimed in claim 2 , wherein a range of the position, which the target object is approaching towards, on the mobile terminal is: an area in a preset range taking a communication antenna of the mobile terminal as a centre.

4. The method as claimed in claim 2 , wherein the optimal sensing area is an area in a preset range closest to the target object.

5. The method as claimed in claim 1 , wherein a range of the position, which the target object is approaching towards, on the mobile terminal is: an area in a preset range taking a communication antenna of the mobile terminal as a centre.

6. The method as claimed in claim 1 , wherein the optimal sensing area is an area in a preset range closest to the target object.

7. A device for controlling transmitting power, comprising:
a judging and selecting component, configured to, when it is detected that a target object approaches a mobile terminal, determine which position, on the mobile terminal, is the target object approaching towards, and select according to the position, an optimal sensing area of a Specific Absorption Rate (SAR) reducing antenna of the mobile terminal for the SAR reducing antenna to sense a movement of the target object; sense the movement of the target object in the optimal sensing area through the SAR reducing antenna and feed back movement information of the target object; and
a power control component, coupled with the judging and selecting component, configured to acquire the movement information, and control the transmitting power of the mobile terminal according to the movement information;
wherein the judging and selecting component is configured to:
switch a logical selection switch to connect different access ports preset on the SAR reducing antenna to the SAR reducing antenna;
sense the movement of the target object in the optimal sensing area through various access ports of the SAR reducing antenna, and respectively acquire movement information of the target object from the various access ports;
when the movement information acquired from all of the various access ports fails to reach a preset threshold, not feed back the movement information; when movement information acquired from a certain one of the various access ports reaches the preset threshold, switch the logical selection switch to the access port, and feed back the movement information acquired from the access port; and when movement information acquired from a plurality of access ports reaches the preset threshold, compare the movement information acquired from the plurality of access ports, switch the logical selection switch to an access port of optimal sensing according to a comparison result, and feed back the movement information acquired from the access port.

8. The device as claimed in claim 7 , wherein the judging and selecting component is further configured to:
re-determine which position, on the mobile terminal, is the target object approaching towards at a preset time interval, and judge whether the position acquired currently is the same as that determined in a previous period; and
when the position acquired currently is the same as that determined in the previous period, use an optimal sensing area determined in the previous period as the current optimal sensing area; when the position acquired currently is different from that determined in the previous period, re-determine, according to the position acquired currently, the optimal sensing area of the SAR reducing antenna of the mobile terminal for the SAR reducing antenna to sense the movement of the target object.

9. The device as claimed in claim 8 , wherein a range of the position, which the target object is approaching towards, on the mobile terminal is: an area in a preset range taking a communication antenna of the mobile terminal as a centre.

10. The device as claimed in claim 8 , wherein the optimal sensing area is an area in a preset range closest to the target object.

11. The device as claimed in claim 7 , wherein a range of the position, which the target object is approaching towards, on the mobile terminal is: an area in a preset range taking a communication antenna of the mobile terminal as a centre.

12. The device as claimed in claim

Assignees

• Zte Corp
• Xian Zhongxing New Software Co Ltd

Inventors

• Zhang Feifei
• Qi Qian
• Hou Zhiqiang

Classifications

• H04W52/367 Primary

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

• H04W52/285

  taking into account the mobility of the user · CPC title

• H04W52/283 Primary

  Power depending on the position of the mobile · CPC title

• H04W4/023

  using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds · CPC title

• H04W64/006

  with additional information processing, e.g. for direction or speed determination · CPC title