METHOD AND APPARATUS FOR CONTROLLING TRANSMISSION POWER IN TRANSMITTER OF WIRELESS COMMUNICATION SYSTEM

• US 20160088571A1
• Filed: 09/23/2015
• Published: 03/24/2016
• Est. Priority Date: 09/24/2014
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: KIM, Hanseok, CHOI, Yonghae, PARK, Seongyong, LEE, Junsung
• Granted Patent: US 10,541,797 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04W 52/325 Power control of control or pilot channels
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

A method and apparatus of controlling transmission power in a transmitter of a wireless communication system are provided. The method includes generating a first signal to be transmitted to a receiver, identifying whether user data is allocated to the generated first signal, determining transmission power based on a result of the determination, and transmitting a second signal to the receiver, based on the determined transmission power and the first signal.

Claims

1. A method of transmitting a signal by a transmitter of a mobile communication system, the method comprising:

generating a first signal to be transmitted to a receiver;

identifying whether user data is allocated to the generated first signal;

determining transmission power based on a result of the identification; and

transmitting a second signal to the receiver, based on the determined transmission power and the first signal.

2. The method of claim 1, wherein the identifying of whether the user data is allocated to the generated first signal comprises:

identifying scheduling information corresponding to the generated first signal; and

identifying whether the user data is allocated to the generated first signal, based on the identified scheduling information.

3. The method of claim 1, wherein the identifying of whether the user data is allocated to the generated first signal comprises:

identifying a pattern of subframe corresponding to the first signal; and

identifying whether the user data is allocated to the generated first signal, based on the identified pattern of subframe.

4. The method of claim 1, wherein the identifying of whether the user data is allocated to the generated first signal comprises:

monitoring an interval of the first signal; and

determining whether the user data is allocated to the generated first signal, based on a result of the monitoring.

5. The method of claim 1, wherein the transmitting of the second signal to the receiver comprises:

controlling a drain bias of a power amplifier (PA) of the transmitter, based on the determined transmission power.

6. The method of claim 1, wherein the determining of the transmission power comprises:

determining the transmission power based on at least one of a reference signal related to the first signal, cell information related to the first signal, control information related to the first signal, and the result of the identification.

7. The method of claim 1, wherein the determining of the transmission power comprises:

selecting the transmission power among predetermined candidate power values, based on the result of the identification.

8. The method of claim 2, wherein the scheduling information comprises information of whether the user data is included in the first signal, information of whether control information is included in the first signal, and information of whether a reference signal is included in the second signal.

9. A transmitter of a mobile communication system, the transmitter comprising:

a transceiver configured to transmit and receive a signal; and

a controller configured to;

control the transceiver, to generate a first signal to be transmitted to a receiver,

identify whether user data is allocated to the generated first signal,

determine transmission power based on a result of the identification, and

transmit a second signal to the receiver, based on the determined transmission power and the first signal.

10. The transmitter of claim 9, wherein the controller is further configured to:

identify scheduling information corresponding to the generated first signal, and

identify whether the user data is allocated to the generated first signal, based on the identified scheduling information.

11. The transmitter of claim 9, wherein the controller is further configured to:

identify a pattern of subframe corresponding to the first signal, and

identify whether the user data is allocated to the generated first signal, based on the identified pattern of subframe.

12. The transmitter of claim 9, wherein the controller is further configured to:

monitor an interval of the first signal, and

determine whether the user data is allocated to the generated first signal, based on a result of the monitoring.

13. The transmitter of claim 9, wherein the controller is further configured to control a drain bias of a power amplifier (PA) of the transmitter, based on the determined transmission power.

14. The transmitter of claim 9, wherein the controller is further configured to determine transmission power based on at least one of a reference signal related to the first signal, cell information related to the first signal, control information related to the first signal, and the result of the identification.

15. The transmitter of claim 9, wherein the controller is further configured to select the transmission power among predetermined candidate power values, based on the result of the identification.

16. The transmitter of claim 10, wherein the scheduling information comprises information of whether the user data is included in the first signal, information of whether control information is included in the first signal, and information of whether a reference signal is included in the second signal.