Method and Apparatus for Controlling Power Consumption in Mobile Communication System

• US 20160198405A1
• Filed: 01/07/2016
• Published: 07/07/2016
• Est. Priority Date: 01/07/2015
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Choi, Yonghae, Lee, Changyup, Park, Seongyong, Won, Jeongjae, Kim, Bumjun, Seo, Heesang, Lee, Donggeun, Lee, Junsung, Hur, Sub, Kim, Song Hun, Kim, Hanseok
• Granted Patent: US 10,448,322 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04W 52/0206 in access points, e.g. base stations access point devices per se H04W88/08
• CPC Class Codes: H04W 52/028 switching on or off only a part of the equipment circuit blocks
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

An embodiment of the present disclosure may provide a power consumption controlling method and apparatus. An embodiment of the present disclosure may provide a method and apparatus for controlling power consumption by a base station, the method comprising: determining empty symbol duration in at least one subframe; and performing a power amplifier (PA) on/off operation based on the determination result. Further, an embodiment of the present disclosure may provide a method and apparatus for controlling power consumption by a base station, the method comprising: generating baseband in-phase/quadrature-phase (IQ) data; determining whether the baseband IQ data includes data which must be transmitted for a predetermined time; and controlling a PA on/off based on the determination result and a transient of a power amplifier (PA).

Claims

1. A method for controlling power consumption by a base station, the method comprising:

determining a duration of an empty symbol in at least one subframe; and

performing a power amplfier (PA) on/off operation based on the determination result.

2. The method of claim 1, wherein the empty symbol corresponds to a subframe, to which a control channel or data traffic is not allocated, among the subframe.

3. The method of claim 1, further comprising

generating information corresponding to the determination result, wherein the information generated is one of first information relating to a subframe to which data traffic is not allocated and second information relating to a subframe to which the data traffic is allocated.

4. The method of claim 1, wherein, in the determining, the empty symbol is identified based on allocation information of a mask symbol pattern and physical downlink shared channel (PDSCH) in the subframe.

5. The method of claim 3, wherein, in the performing of the PA on/off operation, a PA off operation is performed in a empty symbol when information of the subframe is the first information, and the PA off operation is not performed when the information of the subframe is the second information.

6. The method of claim 3, wherein the base station comprises:

a data unit that determines the empty symbol and generates information;

a radio frequency unit that performs the PA on/off operation based on the empty symbol determined and the information generated.

7. A base station for adjusting power consumption, the base station comprising:

a power amplifier (PA) that amplifies a wireless signal; and

a controller that determines a duration of an empty symbol in at least one subframe and controls a PA on/off operation based on the determination result.

8. The base station of claim 7, wherein the empty symbol corresponds to a subframe to which a control channel or data traffic is not allocated.

9. The base station of claim 7, wherein the controller performs a control such that information corresponding to the determination result is generated, the information generated being one of first information relating to a subframe to which data traffic is not allocated and second information relating to a subframe to which data traffic is allocated.

10. The base station of claim 7, wherein the controller performs a control such that the empty symbol is identified based on allocation information of a mask symbol pattern and physical downlink shared channel (PDSCH) in the subframe.

11. The base station of claim 9, wherein the controller performs a control such that a PA off operation is performed in an empty symbol when information of the subframe is the first information and the PA off operation is not peformed when the information of the subframe is the second information.

12. The base station of claim 9, wherein the controller is included in a data unit, and the PA is included in a radio frequency unit that performs a PA on/off operation based on the empty symbol determined and the information.

13. A method for controlling power consumption by a base station, the method comprising:

generating baseband in-phase/quadrature-phase (IQ) data;

determining whether data to be transmitted for a predetermined time is included in the baseband IQ data;

controlling a PA on/off based on the determination result and a transient time of a power amplifier (PA).

14. The method of claim 13, wherein, in the determining,

a PA off period is determined when a value of the baseband IQ data is 0 for the predetermined time and

a PA on period is determined when a value of the baseband IQ data has at least one non-zero value for the predetermined time.

15. The method of claim 13, wherein, in the controlling of the PA on/off, when the PA is turned on, a PA on operation is performed in consideration of the transient time before the baseband IQ data is input in the PA.

16. The method of claim 13, wherein the predetermined time is longer than the transient time and the transient time is a time at which a PA bias voltage level is converted from a bias off level to a bias on level.

17. A base station for controlling power consumption, the base station comprising:

a power amplifier (PA) that amplifies a wireless signal; and

a controller that generates a baseband in-phase/quadrature-phase (IQ) data, determines whether data to be transmitted for a predetermined time is included in the baseband IQ data, and performs a control such that a PA on/off is perfomed based on the determination result and a transient time of the PA.

18. The base station of claim 17, wherein, the controller determines a PA off period when a value of the baseband IQ data is 0 for the predetermined time and determines a PA on period when a value of the baseband IQ data has at least one non-zero value for the predetermined time.

19. The base station of claim 17, wherein the controller performs a control such that when the PA is turned on, a PA on operation is performed in consideration of the transient time before the baseband IQ data is input in the PA.

20. The base station of claim 17, wherein the predetermined time is longer than the transient time and the transient time is a time at which a PA bias voltage level is converted from a bias off level to a bias on level.