Downlink channel state information feedback method and device

Abstract

The present application relates to a downlink channel state information (CSI) feedback method and a device. The method comprises: a terminal device receiving codebook configuration information and CSI feedback type information sent by a network device; on the basis of the codebook configuration information, determining a codebook type for CSI reporting, and, on the basis of the CSI feedback type information, determining a CSI feedback type for CSI reporting; and performing CSI reporting on the basis of the codebook type for CSI reporting and the CSI feedback type for CSI reporting, wherein the codebook configuration information is used to indicate a codebook type from a codebook type set, and the CSI feedback type information is used to indicate at least one CSI feedback type from a CSI feedback type set.

Images