METHOD AND APPARATUS FOR CONTROLLING TRANSMIT POWER

• US 20130039289A1
• Filed: 11/24/2010
• Published: 02/14/2013
• Est. Priority Date: 04/01/2010
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Sang Wook, Lim, Su Hwan, Jung, Man Young, Yang, Yoon Oh
• Granted Patent: US 8,743,817 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04W 52/146 Uplink power control
• CPC Class Codes: H04W 52/325 Power control of control or pilot channels
• CPC Class Codes: H04W 52/365 Power headroom reporting
• CPC Class Codes: H04W 52/367 Power values between minimum and maximum limits, e.g. dynamic range

Abstract

A radio communication system is disclosed. The method for transmitting a signal by a user equipment in a radio communication system includes generating a plurality of uplink signals, reducing maximum transmit power of the user equipment in consideration of a signal configuration for the plurality of uplink signals, and transmitting the plurality of uplink signals to a network within the range of the reduced maximum transmit power of the user equipment.

Claims

1. A method for transmitting a signal by a user equipment in a radio communication system, the method comprising:

generating a plurality of uplink signals;

reducing maximum transmit power of the user equipment in consideration of a signal configuration for the plurality of uplink signals; and

transmitting the plurality of uplink signals to a network within the range of the reduced maximum transmit power of the user equipment.

2. The method according to claim 1, wherein the signal configuration includes a frequency distance between the plurality of uplink signals.

3. The method according to claim 2, wherein the plurality of uplink signals includes a plurality of Physical Uplink Control Channel (PUCCH) signals, a plurality of Physical Uplink Shared Channel (PUSCH) signals or a combination of PUCCH signals and PUSCH signals.

4. The method according to claim 2, wherein the plurality of uplink signals includes PUSCH signals transmitted through a plurality of clusters.

5. The method according to claim 2, wherein, if the plurality of uplink signals includes two PUCCH signals, a frequency distance between the PUCCH signals is virtually fixed to N_RB−

2 in the process of reducing the maximum transmit power of the user equipment, and N_RB is the total number of Resource Blocks (RBs) within a band.

6. The method according to claim 2, wherein the reduction of the maximum transmit power of the user equipment is performed using Maximum Power Reduction (MPR) or Additional MPR (A-MPR) modified in consideration of the distance between the frequencies.

7. A user equipment used in a radio communication system, comprising:

a Radio Frequency (RF) unit configured to transmit or receive an RF signal to or from a base station; and

a processor connected to the RF signal and configured to control the RF unit,

wherein the processor generates a plurality of uplink signals, reduces maximum transmit power of the user equipment in consideration of a signal configuration for the plurality of uplink signals, and transmits the plurality of uplink signals to a network within the range of the reduced maximum transmit power of the user equipment.

8. The user equipment according to claim 7, wherein the signal configuration includes a frequency distance between the plurality of uplink signals.

9. The user equipment according to claim 8, wherein the plurality of uplink signals includes a plurality of Physical Uplink Control Channel (PUCCH) signals, a plurality of Physical Uplink Shared Channel (PUSCH) signals or a combination of PUCCH signals and PUSCH signals.

10. The user equipment according to claim 8, wherein the plurality of uplink signals includes PUSCH signals transmitted through a plurality of clusters.

11. The user equipment according to claim 8, wherein, if the plurality of uplink signals includes two PUCCH signals, a frequency distance between the PUCCH signals is virtually fixed to N_RB−

2 in the process of reducing the maximum transmit power of the user equipment, and N RB is the total number of Resource Blocks (RBs) within a band.

12. The user equipment according to claim 8, wherein the maximum transmit power of the user equipment is reduced using Maximum Power Reduction (MPR) or Additional MPR (A-MPR) modified in consideration of the distance between the frequencies.