Channel state information reporting method and apparatus
摘要
說明書
In an optional embodiment, if the network device sends, to the terminal device in a first time unit, the first downlink control information that indicates the first channel state information configuration, in a second time unit indicated by the first downlink control information, a resource element (RE) occupied by the second-type CSI-IM resource is not used to send a downlink shared channel.
Specifically, each network device (for example, a serving base station) serving the terminal device performs rate matching for downlink data on a first-type CSI-IM resource of the network device, that is, does not send a downlink shared channel on an RE occupied by the resource. At a moment t, if a network device sends downlink control information to the terminal device to trigger the above CSI configuration used for multi-TRP measurement, the network device performs rate matching on a second-type CSI-IM resource of the network device at a moment t+k, that is, does not send a downlink shared channel on an RE occupied by the resource.
Taking a plurality of serving base stations as an example, because the first-type CSI-IM resource is the above same CSI-IM resource, the plurality of serving base stations perform rate matching on the first-type CSI-IM resource, and the first-type CSI-IM resource may be used by the terminal device to measure interference from another non-serving base station. Because the second-type CSI-IM resource is the above different CSI-IM resources, only one specific serving base station performs rate matching on the second-type CSI-IM resource, and the second-type CSI-IM resource may be used by the terminal device to measure interference from another non-serving base station and a serving base station other than the specific serving base station.
In an embodiment, when M=1, the target CSI-IM resource is the second-type CSI-IM resource.
