Method for controlling transmission power of sounding reference signal and apparatus for same

Patent metadata

Field	Value
Publication number	US-10165518-B2
Application number	US-201414895437-A
Country	US
Kind code	B2
Filing date	Jun 23, 2014
Priority date	Jun 24, 2013
Publication date	Dec 25, 2018
Grant date	Dec 25, 2018

Abstract

Disclosed in the present application is a method for transmitting a sounding reference signal (SRS) from a terminal to a base station in a wireless communication system. More specifically, the method comprises a step of establishing a first subframe set and a second subframe set through an upper layer; a step of receiving, from the base station, a triggering indicator of the sounding reference signal; and a step of transmitting the sounding reference signal from a specific subframe to the base station, according to the triggering indicator, wherein each of the first subframe set and the second subframe set is associated with a power control process for transmitting an uplink data channel, and wherein the transmission power of the sounding reference signal is determined according to the bit size and/or the field value of the triggering indicator.

First claim

The invention claimed is:

1. A method for enabling a user equipment to transmit a sounding reference signal (SRS) to a base station in a wireless communication system, the method comprising:
receiving, by the user equipment, information about a first subframe set and a second subframe set through a higher layer from the base station,
wherein each of the first subframe set and the second subframe set is configured by the user equipment;
receiving, by the user equipment, a triggering indicator of the SRS from the base station; and
transmitting, by the user equipment, the SRS to the base station at a specific subframe in accordance with the triggering indicator,
wherein each of the first subframe set and the second subframe set is associated with a power control process for uplink data channel transmission and a power control process of the SRS,
wherein the power control process of the SRS is configured based on a bit size and a field value of the triggering indicator,
wherein a transmission power of the SRS is determined based on the power control process of the SRS, and
wherein when the bit size of the triggering indicator is 2 bits or more and the field value is 1, the transmission power of the SRS is determined based on a power control process associated with one of the first subframe set and the second subframe set, to which the specific subframe belongs.

2. The method according to claim 1 , wherein the first subframe set is a set of subframes fixed for an uplink, and the second subframe set is a set of subframes that may be used for one of an uplink and a downlink in accordance with an indication of the base station.

3. A method for enabling a base station to receive a sounding reference signal (SRS) from a user equipment in a wireless communication system, the method comprising:
transmitting, by the base station, information about a first subframe set and a second subframe set through a higher layer from the user equipment,
wherein each of the first subframe set and the second subframe set is configured by the user equipment;
transmitting, by the base station, a triggering indicator of the SRS to the user equipment; and
receiving, by the base station, the SRS at a specific subframe from the user equipment,
wherein each of the first subframe set and the second subframe set is associated with a power control process for uplink data channel transmission and a power control process of the SRS,
wherein the power control process of the SRS is configured based on a bit size and afield value of the triggering indicator,
Wherein a transmission power of the SRS is determined based on the power control process of the SRS, and
wherein when the bit size of the triggering indicator is 2 bits or more and the field value is 1, the transmission power of the SRS is determined based on a power control process associated with one of the first subframe set and the second subframe set, to which the specific subframe belongs.

4. The method according to claim 3 , wherein the first subframe set is a set of subframes fixed for an uplink, and the second subframe set is a set of subframes that may be used for one of an uplink and a downlink in accordance with an indication of the base station.

Assignees

• Lg Electronics Inc

Inventors

• Park Jonghyun
• Seo Hanbyul
• Lee Seungmin

Classifications

• H04L1/1896

  ARQ related signaling · CPC title

• H04W52/146 Primary

  Uplink power control · CPC title

• H04B7/2656

  for structure of frame, burst · CPC title

• H04W52/325

  Power control of control or pilot channels · CPC title

• H04W52/545

  modifying TPC bits in special situations · CPC title