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Channel state information reporting method and apparatus

專利號
US11888563B2
公開日期
2024-01-30
申請人
HUAWEI TECHNOLOGIES CO., LTD.（CN Guangdong）
發(fā)明人
Xueru Li; Ruiqi Zhang; Kunpeng Liu; Xianda Liu; Yongxing Zhou
IPC分類
H04B7/06; H04B17/345; H04L5/00; H04W72/23
技術(shù)領(lǐng)域
csi,im,resource,station,terminal,dci,base,rs,resources,nzp
地域： Guangdong

摘要

This application provides a channel state information reporting method and apparatus. The method includes: A terminal device receives M pieces of downlink control information, where first downlink control information in the M pieces of downlink control information indicates a first channel state information configuration, the first channel state information configuration is associated with a first channel state information interference measurement CSI-IM resource group, and the first CSI-IM resource group includes N1 CSI-IM resources, where M and N1 are positive integers, and N1 is greater than 1; and the terminal device measures a target CSI-IM resource, and reports channel state information, where the target CSI-IM resource is determined by the terminal device from the N1 CSI-IM resources based on M, and a quantity of target CSI-IM resources is less than N1.

說明書

The terminal device measures, on a CSI-RS resource of the base station 1, channel information from the base station 1 to the terminal device, and measures, on a CSI-IM resource of the base station 1, interference from the base station 2 and another non-serving base station to transmission of the base station 1, to obtain a CQI when only the base station 1 serves the terminal device. It should be understood that, the base station 1 does not send any signal on the above CSI-IM resource. Therefore, for the base station 1, the CSI-IM resource corresponds to a zero power reference signal, and the base station 2 may send a signal (for example, a physical downlink shared channel (physical downlink shared channel, PDSCH) for another terminal device).

2. CSI report 2: A corresponding transmission mechanism is single-station transmission of the base station 2.

The terminal device measures, on a CSI-RS resource of the base station 2, channel information from the base station 2 to the terminal device, and measures, on a CSI-IM resource of the base station 2, interference from the base station 1 and another non-serving base station to transmission of the base station 2, to obtain a CQI when only the base station 2 serves the terminal device. It should be understood that, the base station 2 does not send any signal on the above CSI-IM resource. Therefore, for the base station 2, the CSI-IM resource corresponds to a zero power reference signal, and the base station 1 may send a signal (for example, a PDSCH for another terminal device).

3. CSI report 3: A corresponding transmission mechanism is NCJT.

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