METHOD AND DEVICE FOR APERIODICALLY REPORTING CHANNEL STATE INFORMATION IN WIRELESS CONNECTION SYSTEM

摘要

A method for aperiodic channel status information (CSI) reporting in a wireless access system, and a user equipment (UE) for performing the method are discussed. The method is performed by a user equipment (UE) and includes receiving a radio resource control (RRC) message configuring one or more CSI measurement sets. Each of the one or more CSI measurement sets includes one or more subframes. The method includes receiving a physical downlink control channel (PDCCH) including a CSI request field triggering the aperiodic CSI reporting; and reporting a CSI on a subframe ‘n’. The CSI has been measured on a subframe ‘n-nCQI—ref’. ‘nCQI—ref’ is a value which makes the subframe ‘n-nCQI—ref’ to be included in a valid CSI measurement set which is closest from the subframe ‘n’.

主权项

1. A method for aperiodic channel status information (CSI) reporting in a wireless access system, the method performed by a user equipment (UE) and comprising:
receiving a radio resource control (RRC) message configuring one or more CSI measurement sets, wherein each of the one or more CSI measurement sets includes one or more subframes; receiving a physical downlink control channel (PDCCH) including a CSI request field triggering the aperiodic CSI reporting; and reporting CSI on a subframe ‘n’, wherein the CSI has been measured on a subframe ‘n-nCQI—ref’, and wherein ‘nCQI—ref’ is a value which makes the subframe ‘n-nCQI—ref’ to be included in a valid CSI measurement set which is closest from the subframe ‘n’.