Channel state information reporting method and apparatus
摘要
說明書
It should be understood that the content of the first CSI configuration and the second CSI configuration may be alternatively different. In this case, the first CSI configuration and the second CSI configuration may separately configure different report content. For example, the first CSI configuration is used to report at least one of a rank indication (rank indication, RI), a type I (Type I) precoding matrix indicator (precoding matrix indicator, PMI), and a channel quality indicator (channel quality indicator, CQI), and the second CSI configuration is used to report at least one of an RI, a type II PMI, and a CQI. For another example, the PMI in the first CSI configuration is a codebook based on 16 ports, and the PMI in the second CSI configuration is a codebook based on 32 ports. This is not limited in this embodiment of this application. Parameters of the two CSI configurations are not totally the same, and may be more flexible, and therefore are more applicable to different situations such as antenna structures and processing capabilities of different base stations in an actual system.
If the first CSI configuration and the second CSI configuration are different, the network device may indicate the association relationship between the first CSI configuration and the second CSI configuration by using first indication information and/or fourth indication information. The first indication information and/or the fourth indication information may be carried in radio resource control (radio resource control, RRC) signaling, or may be carried in DCI. This is not limited in this embodiment of this application.
