Channel state measurement method and apparatus

A channel state measurement method, comprising:

• receiving, by a terminal device, first signaling, wherein the first signaling carries first indication information, the first indication information indicates a target channel state information-reference signal (CSI-RS) resource and a target channel state information-interference measurement (CSI-IM) resource group, the target CSI-IM resource group comprises a CSI-RS resource in the N CSI-RS resources, an ith CSI-RS resource in the N CSI-RS resources is associated with ni CSI-IM resource groups, and a kth CSI-IM resource group in the ni CSI-IM resource groups comprises xik CSI-RS resources in the N CSI-RS resources except the ith CSI-RS resource, wherein N, i, ni, k, and xik are all integers, N≥2, 1≤ni≤N, k=1, 2, . . . , ni, 0≤xik≤N−1, j∈{1, 2, . . . , N}, and nj≥2, wherein the quantity ni of CSI-IM resource groups associated with the ith CSI-RS resource meets 1≤ni≤N1, N1, is an integer, and 2≤N1≤N, and wherein the first indication information comprises ┌log2 N┐+┌log2 N1┐ bits, the ┌log2 N┐ bits indicate the target CSI-RS resource, and the ┌log2 N1┐ bits indicate the target CSI-IM resource group;
• and
• reporting, by the terminal device, a channel quality indicator (CQI), wherein the CQI is determined based on a channel coefficient measured by the terminal device on the target CSI-RS resource and interference measured by the terminal device on the CSI-RS resource in the target CSI-IM resource group.

A channel state measurement apparatus, comprising:

• at least one processor;
• one or more memories coupled to the at least one processor and storing programming instructions for execution by the at least one processor to select, from N channel state information-reference signal (CSI-RS) resources, a target CSI-RS resource and a target channel state information-interference measurement (CSI-IM) resource group associated with the target CSI-RS resource, wherein the target CSI-IM resource group comprises a CSI-RS resource in the N CSI-RS resources, an ith CSI-RS resource in the N CSI-RS resources is associated with ni CSI-IM resource groups, and a kth CSI-IM resource group in the ni CSI-IM resource groups comprises xik CSI-RS resources in the N CSI-RS resources except the ith CSI-RS resource, wherein N, i, ni, k, and xik are all integers, N≥2, 1≤ni≤N, k=1, 2, . . . , ni, 0≤xik≤N−1, j∈{1, 2, . . . , N}, and nj≥2, and wherein the quantity ni of CSI-IM resource groups associated with the ith CSI-RS resource meets 1≤ni≤N1, N1, is an integer, and 2≤N1≤N;
• and
• a transmitter, the transmitter configured to send first indication information by using first signaling, wherein the first indication information indicates the target CSI-RS resource and the target CSI-IM resource group, the first indication information comprises ┌log2 N┐+┌log2 N1┐ bits, the ┌log2 N┐ bits indicate the target CSI-RS resource, and the ┌log2 N1┐ bits indicate the target CSI-IM resource group.

A channel state measurement apparatus, comprising:

• a receiver, the receiver configured to receive first signaling, wherein the first signaling carries first indication information, the first indication information indicates a target channel state information-reference signal (CSI-RS) resource and a target channel state information-interference measurement (CSI-IM) resource group, the target CSI-IM resource group comprises a CSI-RS resource in the N CSI-RS resources, an ith CSI-RS resource in the N CSI-RS resources is associated with ni CSI-IM resource groups, and a kth CSI-IM resource group in the ni CSI-IM resource groups comprises xik CSI-RS resources in the N CSI-RS resources except the ith CSI-RS resource, wherein N, i, ni, k, and xik are all integers, N≥2, 1≤ni≤N, k=1, 2, . . . , ni, 0≤xik≤N−1, j∈{1, 2, . . . , N}, and nj≥2, wherein the quantity ni of CSI-IM resource groups associated with the ith CSI-RS resource meets 1≤ni≤N1, N1, is an integer, and 2≤N1≤N, and wherein the first indication information comprises ┌log2 N┐+┌log2 N1┐ bits, the ┌log2 N┐ bits indicate the target CSI-RS resource, and the ┌log2 N1┐ bits indicate the target CSI-IM resource group;
• and
• a transmitter, the transmitter configured to report a channel quality indicator (CQI), wherein the CQI is determined based on a channel coefficient measured by the apparatus on the target CSI-RS resource and interference measured by the apparatus on the CSI-RS resource in the target CSI-IM resource group.