In one embodiment, the first DCI and the second DCI each include one field (to be specific, the second indication information and the fifth indication information), indicating that the CSI configuration indicated by the DCI is used for multi-TRP transmission (the multi-station joint transmission mechanism or the single-station transmission mechanism). The terminal device may determine, depending on whether the first DCI and the second DCI include the above field, whether there is an association relationship between the first CSI configuration and the second CSI configuration. If both the first DCI and the second DCI include the field, and the field indicates that the CSI configuration is used for multi-TRP transmission, it indicates that the first CSI configuration and the second CSI configuration have an association relationship and are used for multi-TRP transmission, and the terminal device may perform measurement for NCJT or single-station transmission. In this case, the second indication information and/or the fifth indication information may be sent to the terminal device by using DCI signaling. The network device may specifically enable the above field to use a specific value (for example, 0 or 1) to indicate a multi-TRP transmission manner.
In an embodiment, the first downlink control information indicates at least one of the following: the first channel state information configuration, the at least one CSI-RS resource, and the N1 CSI-IM resources. In addition, the first indication information does not indicate the N2 CIS-IM resources.