Method and device for reporting channel state information in wireless communication system
AssigneeLG Electronics Inc.
InventorsInkwon Seo, Seungmin Lee
Life of this patent
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Abstract
One embodiment of the present invention relates to a method by which a terminal reports channel state information (CSI) in a wireless communication system, the channel state information reporting method comprising the steps of: deriving an interference measurement on the basis of a zero power CSI-reference signal (RS) related to a CSI-interference measurement (IM) resource configuration: calculating a channel quality information (CQI) value on the basis of the interference measurement; and transmitting CSI including the CQI value to a base station, wherein at least one RE according to the CSI-IM resource configuration is included in different ECCEs included in a PRB pair.
Claims19
A method of reporting CSI (channel state information) by a user equipment (UE) in a wireless communication system, the method comprising:
- performing an interference measurement based on a zero-power CSI-RS (CSI-reference signal) related to a CSI-IM (CSI-interference measurement) resource configuration;
- calculating a CQ (channel quality information) value based on the interference measurement;
- and
- transmitting the CSI containing the CQ value to an eNB (evolved Node B),
- wherein the CSI-IM resource configuration includes at least one RE (Resource Element) for each of a plurality of ECCEs (enhanced control channel elements) contained in each of a plurality of PRB (Physical Resource Block) pairs,
- wherein performing the interference measurement comprises using interferences of all ECCEs measured based on the corresponding at least one RE;
- and
- wherein performing the interference measurement further comprises averaging the interferences of each of the ECCEs.
A user equipment (UE) reporting channel state information (CSI) in a wireless communication system, the UE comprising:
- a reception module configured to receive signals;
- a transmission module configured to transmit signals;
- and
- a processor configured to perform an interference measurement based on a zero-power CSI-RS (CSI-reference signal) related to a CSI-IM (CSI-interference measurement) resource configuration, to calculate a CQ (channel quality information) value based on the interference measurement and to control the transmission module to transmit the CSI containing the CQ value to an eNB (evolved Node B),
- wherein the CSI-IM resource configuration includes at least one RE (Resource Element) for each of a plurality of ECCEs (enhanced control channel elements) contained in each of a plurality of FRB (Physical Resource Block) pairs,
- wherein performing the interference measurement comprises using interferences of all ECCEs measured based on the corresponding at least one RE, and
- wherein performing the interference measurement further comprises averaging the interferences of each of the ECCEs.
Dependencies are inferred from the claim text.