Method and apparatus for transmitting and receiving channel state information in wireless communication system
AssigneeSamsung Electronics Co., Ltd.
InventorsYounsun Kim, Hyojin Lee, Hyoungju Ji, Juho Lee, Joonyoung Cho
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Abstract
A method by a terminal, a method by a base station, a terminal, and a base station are provided. The method by the terminal includes receiving a first channel state information reference signal (CSI-RS) and a second CSI-RS from a base station; generating channel state information (CSI) based on both the first CSI-RS and the second CSI-RS; and reporting the CSI to the base station, wherein the CSI includes a rank indicator (RI) and a channel quality indicator (CQI).
Claims20
A method for reporting channel state information (CSI) performed by a terminal in a communication system, the method comprising:
- receiving, from a base station, CSI configuration information including configurations on a first channel state information reference signal (CSI-RS), a second CSI-RS, and a CSI interference measurement (CSI-IM) and configuration for a CSI feedback associated with the first CSI-RS, the second CSI-RS and the CSI-IM;
- receiving, from the base station, the first CSI-RS and the second CSI-RS based on the configurations on the first CSI-RS and the second CSI-RS;
- generating the CSI based on the configuration for the CSI feedback, and the first CSI RS, the second CSI-RS and the CSI-IM;
- and
- reporting, to the base station, the CSI including at least one of a rank indicator (RI), a precoding matrix indicator (PMI), or a channel quality indicator (CQI),
- wherein the first CSI-RS and the second CSI-RS are non-zero power CSI-RSs, and
- wherein the CSI configuration information includes information on RI restriction which is associated with allowable RIs to be reported.
A method for receiving channel state information (CSI) performed by a base station in a communication system, the method comprising:
- transmitting, to a terminal, CSI configuration information including configurations on a first channel state information reference signal (CSI-RS), a second CSI-RS, and a CSI-interference measurement (CSI-IM) and configuration for a CSI feedback associated with the first CSI-RS, the second CSI-RS, and the CSI-IM;
- transmitting, to the terminal, the first CSI-RS and the second CSI-RS;
- and
- receiving the CSI including at least one of a rank indicator (RI), a precoding matrix indicator (PMI), or a channel quality indicator (CQI),
- wherein the CSI is associated with the configurations for the CSI feedback, and the first CSI-RS, the second CSI-RS, and the CSI-IM, and
- wherein the CSI configuration information includes information RI restriction which is associated with allowable RIs to be reported.
A terminal for reporting channel state information (CSI) performed in a communication system, the terminal comprising:
- a transceiver;
- and
- a controller connected with the transceiver and configured to:
- receive, from a base station via the transceiver, CSI configuration information including configurations on a first channel state information reference signal (CSI RS), a second CSI-RS, and a CSI-interference measurement (CSI-IM) and configuration for a CSI feedback associated with the first CSI-RS, the second CSI-RS, and the CSI-IM;
- receive, from the base station, the first CSI-RS and the second CSI-RS based on the configurations on the first CSI-RS and the second CSI-RS;
- generate the CSI based on the configuration for the CSI feedback, and the first CSI-RS, the second CSI-RS, and the CSI-IM;
- and
- report, to the base station, the CSI including at least one of a rank indicator (RI), a precoding matrix indicator (PMI), or a channel quality indicator (CQI),
- wherein the first CSI-RS and the second CSI-RS are non-zero power CSI-RSs, and
- wherein the CSI configuration information includes information on RI restriction which is associated with allowable RIs to be reported.
A base station for receiving channel state information (CSI) in a communication system, the base station comprising:
- a transceiver;
- and
- a controller connected with the transceiver and configured to:
- transmit, to a terminal via the transceiver, CSI configuration information including configurations on a first channel state information reference signal (CSI-RS), a second CSI-RS, and a CSI-interference measurement (CSI-IM) and configuration for a CSI feedback associated with the first CSI-RS, the second CSI-RS, and the CSI-IM;
- transmit, to the terminal, the first CSI-RS and the second CSI-RS;
- and
- receive, from the terminal, the CSI including at least one of a rank indicator (RI),
- a precoding matrix indicator (PMI), or a channel quality indicator (CQI),
- wherein the CSI is associated with the configurations for the CSI feedback, and the first CSI-RS, the second CSI-RS, and the CSI-IM, and
- wherein the CSI configuration information includes information RI restriction which is associated with allowable RIs to be reported.
The base station of 16, wherein the configuration for the CSI feedback includes information on a CSI feedback among a plurality of CSI feedbacks.
Dependencies are inferred from the claim text.