US 10,433,265 B2 · Method for controlling transmission power of sounding reference signal in wireless communication system and apparatus for same

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 time division duplex (TDD) system. More specifically, the method comprises: a step of establishing a first subframe set and a second subframe set through an upper layer, and step of transmitting the sounding reference signal from a specific subframe to the base station, wherein the first subframe set and the second subframe set are configured by an uplink subframe and/or a special subframe, each of the first subframe and the second subframe 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 on the basis of a specific power control process associated with a subframe set to which the specific subframe belongs, from among the first subframe set and the second subframe set.

Claims8

Dependent claims

A method for a user equipment (UE) to transmit a sounding reference signal to a base station in a wireless communication system supporting eIMTA (Enhanced Interference Management and Traffic Adaptation), the method comprising:

receiving a higher layer signaling regarding configuration of a first subframe set and a second subframe set;
and
transmitting the sounding reference signal to the base station on subframe ‘i’,
wherein the ‘i’ is a subframe number and an integer equal to or greater than 0,
wherein transmission power of the sounding reference signal transmitted on the subframe ‘i’ is determined based on fc(i) for the first subframe set, and fc(0)(i) for the second subframe set,
wherein the fc(i) is a current physical uplink shared channel (PUSCH) power control adjustment state for serving cell ‘c’ in subframe ‘i’ belonging to the first subframe set, and the)fc(0)(i) is a current PUSCH power control adjustment state for serving cell ‘c’ in subframe ‘i’ belonging to the second subframe set, and
wherein the fc(i) is separately accumulated from a value of a previous subframe belonging to the first subframe set while the fc(0)(i) is separately accumulated from a value of a previous subframe belonging to the second subframe.

4 more elements

A method for a base station to receive a sounding reference signal from a user equipment (UE) in a wireless communication system supporting eIMTA (Enhanced Interference Management and Traffic Adaptation), the method comprising:

transmitting a higher layer signaling regarding configuration of a first subframe set and a second subframe set;
and
receiving the sounding reference signal from the UE on subframe ‘i’,
wherein the ‘i’ is a subframe number and an integer equal to or greater than 0,
wherein transmission power of the sounding reference signal received on subframe ‘i’ is determined based on fc(i) for the first subframe set, and fc(0)(i) for the second subframe set,
wherein the fc(i) is a current physical uplink shared channel (PUSCH) power control adjustment state for serving cell ‘c’ in subframe ‘i’ belonging to the first subframe set, and the fc(0)(i) is a current PUSCH power control adjustment state for serving cell ‘c’ in subframe ‘i’ belonging to the second subframe set, and
wherein the fc(i) is separately accumulated from a value of a previous subframe belonging to the first subframe set while the)fc(0)(i) is separately accumulated from a value of a previous subframe belonging to the second subframe.

4 more elements

Dependencies are inferred from the claim text.

Method for controlling transmission power of sounding reference signal in wireless communication system and apparatus for same

Life of this patent

Method for controlling transmission power of sounding reference signal in wireless communication system and apparatus for same

Life of this patent

Abstract

Claims8