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US 10,778,500 B2Granted
Method for transmitting and receiving reference signal in wireless communication system and device therefor
AssigneeLG Electronics Inc.
InventorsKilbom Lee, Kyuseok Kim, Kijun Kim, Minki Ahn
Life of this patent
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Abstract
A method by which a base station transmits a reference signal in a wireless communication system can comprise the steps of: transmitting, to a terminal, information on a modulation method of a reference signal for estimating a phase difference between symbols in a time domain; and transmitting, to the terminal, the reference signal, for estimating the phase difference between the symbols, to which the modulation method is applied.
Claims13
A method for transmitting a reference signal by a base station in a wireless communication system, the method comprising:
- transmitting, to a user equipment (UE), information on a modulation scheme (MCS) of a phase compensation reference signal (PCRS), wherein the PCRS is a reference signal for estimating a phase difference between symbols in a time domain;
- transmitting, to the UE, a downlink control information (DCI) including the information on the MCS of a physical downlink shared channel (PDSCH);
- and
- transmitting, to the UE, the PCRS to which the MCS is applied to the UE,
- wherein the information on the MCS of the PCRS is a mapping table between the MCS of the PDSCH and the MCS of the PCRS,
- wherein the MCS of the PDSCH is determined based on the information on the MCS of the PDSCH,
- wherein the MCS of the PCRS is determined based on the MCS of the PDSCH and the mapping table, and
- wherein based on the MCS of the PDSCH being related to 16-QAM (16-Quadrature Amplitude modulation), the MCS of the PCRS is determined based on a restricted 16-QAM with constellation points with a minimum phase difference of π/2.
5 more elements
A method for receiving a reference signal by a user equipment (UE) in a wireless communication system, the method comprising:
- receiving, from a base station, information on a modulation scheme (MCS) of a phase compensation reference signal (PCRS), wherein the PCRS is a reference signal for estimating a phase difference between symbols in a time domain;
- receiving, from the based station, a downlink control information (DCI) including the information on the MCS of a physical downlink shared channel (PDSCH);
- and
- receiving, from the base station, the PCRS to which the MCS is applied to the UE,
- wherein the information on the MCS of the PCRS is a mapping table between the MCS of the PDSCH and the MCS of the PCRS,
- wherein the MCS of the PDSCH is determined based on the information on the MCS of the PDSCH,
- wherein the MCS of the PCRS is determined based on the MCS of the PDSCH and the mapping table, and
- wherein based on the MCS of the PDSCH being related to 16-QAM (16-Quadrature Amplitude modulation), the MCS of the PCRS is determined based on a restricted 16-QAM with constellation points with a minimum phase difference of π/2.
5 more elements
A base station for transmitting a reference signal in a wireless communication system, the base station comprising:
- a transmitter;
- and
- a processor,
- wherein the processor is configured to control:
- the transmitter to transmit, to a user equipment (UE), information on a modulation scheme (MCS) of a phase compensation reference signal (PCRS), wherein the PCRS is a reference signal for estimating a phase difference between symbols in a time domain;
- the transmitter to transmit, to the UE, a downlink control information (DCI) including the information on the MCS of a physical downlink shared channel (PDSCH);
- and
- the transmitter to transmit, to the UE, the PCRS to which the MCS is applied to the UE,
- wherein the information on the MCS of the PCRS is a mapping table between the MCS of the PDSCH and the MCS of the PCRS,
- wherein the MCS of the PDSCH is determined based on the information on the MCS of the PDSCH,
- wherein the MCS of the PCRS is determined based on the MCS of the PDSCH and the mapping table, and
- wherein based on the MCS of the PDSCH being related to 16-QAM (16-Quadrature Amplitude modulation), the MCS of the PCRS is determined based on a restricted 16-QAM with constellation points with a minimum phase difference of π/2.
9 more elements
A user equipment (UE) for receiving a reference signal in a wireless communication system, the UE comprising:
- a receiver;
- and
- a processor,
- wherein the processor is configured to control:
- the receiver to receive, from a base station, information on a modulation scheme (MCS) of a phase compensation reference signal (PCRS), wherein the PCRS is a reference signal for estimating a phase difference between symbols in a time domain;
- the receiver to receive, from the base station, a downlink control information (DCI) including the information on the MCS of a physical downlink shared channel (PDSCH);
- and
- the receiver to receive, from the base station, the PCRS to which the MCS is applied to the UE,
- wherein the information on the MCS of the PCRS is a mapping table between the MCS of the PDSCH and the MCS of the PCRS,
- wherein the MCS of the PDSCH is determined based on the information on the MCS of the PDSCH,
- wherein the MCS of the PCRS is determined based on the MCS of the PDSCH and the mapping table, and
- wherein based on the MCS of the PDSCH being related to 16-QAM (16-Quadrature Amplitude modulation), the MCS of the PCRS is determined based on a restricted 16-QAM with constellation points with a minimum phase difference of π/2.
9 more elements
Dependencies are inferred from the claim text.