APPARATUS AND METHOD FOR CONTROLLING OUTPUT POWER OF MOBILE TERMINAL

• US 20070077901A1
• Filed: 08/21/2006
• Published: 04/05/2007
• Est. Priority Date: 08/19/2005
• Status: Abandoned Application

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: JUNG, Chang-Yong
• Application Number:
  US11/465,905
• Publication Number:
  US 20070077901A1
• Time in Patent Office: Days
• US Class Current: 455/127.100
• CPC Class Codes: H04W 52/10 Open loop power control
• CPC Class Codes: H04W 52/246 where the output power of a terminal is based on a path parameter calculated in said terminal
• CPC Class Codes: H04W 52/52 using AGC [Automatic Gain Control] circuits or amplifiers

Abstract

An apparatus for controlling output power of a mobile terminal which includes a power detector that detects a power level of a signal received from a base station, and a controller that determines a reference power value, based on the detected power level of the signal received from the base station, and controls a power of an RF signal transmitted by the mobile terminal, based on the determined reference power value.

Claims

1. An apparatus for controlling output power of a mobile terminal, comprising:

a power detector that detects a power level of a signal received from a base station; and

a controller that determines a reference power value , based on the detected power level of the signal received from the base station, and controls a power of an RF signal transmitted by the mobile terminal, based on the determined reference power value.

2. The apparatus according to claim 1, wherein the mobile terminal operates in a Global System for Mobile Communication (GSM) system.

3. The apparatus according to claim 1, wherein the controller decreases the reference power value when the detected power level of the signal received from the base station is greater than a predetermined threshold.

4. The apparatus according to claim 1, wherein the controller increases the reference power value when the detected power level of the signal received from the base station is less than a predetermined threshold.

5. An apparatus for controlling output power of a mobile terminal, comprising:

a power amplifier module (PAM) that amplifies power of an RF signal;

a power detector that detects a power level of a signal received from a base station; and

a controller that determines a reference power value, based on the detected power level of the signal received from the base station , and controls amplification of the RF signal, based on the determined reference power value.

6. The apparatus according to claim 5, wherein the controller detects a power level of an amplified RF signal, compares the detected power level of the amplified RF signal with the determined reference power value, and sends a control signal to the PAM based on the comparison.

7. The apparatus according to claim 6, wherein the PAM amplifies the power of an RF signal based on the control signal.

8. The apparatus according to claim 5, wherein the controller decreases the reference power value when the detected power level of the signal received from the base station is greater than a predetermined threshold.

9. The apparatus of claim 5, wherein the controller increases the reference power value when the detected power level of the signal received from the base station is less than a predetermined threshold.

10. A method for controlling output power of a mobile terminal, comprising:

detecting a power level of a signal received from a base station;

determining a reference power value, based on the detected power level of the signal received from the base station; and

controlling a power of an RF signal transmitted by the mobile terminal, based on the determined reference power value.

11. The method according to claim 10, wherein determining a reference power value comprises decreasing the reference power value when the detected power level of the signal received from the base station is greater than a predetermined threshold.

12. The method according to claim 11, wherein controlling the power of the RF signal comprises controlling the power based on the decreased reference power value.

13. The method according to claim 10, wherein determining a reference power value comprises increasing the reference power value when the detected power level of the signal received from the base station is less than a predetermined threshold.

14. The method according to claim 13, wherein controlling the power of the RF signal comprises controlling the power based on the increased reference power value.

15. A method for controlling output power of a mobile terminal, comprising:

detecting a power level of a signal received from a base station;

adjusting a reference power value by decreasing the reference power value if the detected power level of the signal received from the base station is greater than a predetermined threshold, and increasing the reference power value if the detected power level of the signal received from the base station is less than a predetermined threshold; and

controlling a power of an RF signal transmitted by the mobile terminal, based on the reference power value.

16. A computer-readable medium which stores a program for controlling output power of a mobile terminal, the program comprising:

a power level detection code segment that detects a power level of a signal received from a base station;

a reference power value determination code segment that determines a reference power value, based on the detected power level of the signal received from the base station; and

a power control code segment that generates a control signal for controlling the power of an RF signal transmitted by the mobile terminal, based on the determined reference power value.

17. The computer-readable medium according to claim 16, wherein the reference power value determination code segment decreases the reference power value when the detected power level of the signal received from the base station is greater than a predetermined threshold.

18. The computer-readable medium according to claim 16, wherein the reference power value determination code segment increases the reference power value when the detected power level of the signal received from the base station is less than a predetermined threshold.

19. The computer-readable medium according to claim 16, wherein the program further comprises an RF signal power level detection code segment that detects a power level of an RF signal transmitted by the mobile terminal.

20. The computer-readable medium according to claim 19, wherein the power control code segment compares the detected power level of the RF signal with the determined reference power value, and generates the control signal based on the comparison.