Channel state information reporting method, channel state information receiving method, communication node, and storage medium

A channel state information receiving method, comprising:

• transmitting configuration information;
• transmitting a channel state information-reference signal (CSI-RS) according to the configuration information;
• and
• receiving channel state information (CSI), the CSI comprising a precoding matrix indicator for indicating a precoding matrix, wherein the precoding matrix is determined according to set vectors, the set vectors comprises a first group of vectors, the first group of vectors comprises L first vectors, each first vector of the L first vectors corresponds to a port of the CSI-RS, and L is a positive integer;
• wherein the set vectors further comprises a second group of vectors, the second group of vectors comprises Mv second vectors, each element in each second vector of the Mv second vectors corresponds to a precoding matrix, and Mv is a positive integer.

A communication node, comprising a memory, a processor, and a computer program stored on the memory and runnable on the processor, wherein the processor, upon performing the program, implements the following steps:

• receiving configuration information;
• receiving a channel state information-reference signal (CSI-RS) according to the configuration information;
• and
• reporting channel state information (CSI) according to the CSI-RS, the CSI comprising a precoding matrix indicator for indicating a precoding matrix, wherein the precoding matrix is determined according to set vectors, the set vectors comprises a first group of vectors, the first group of vectors comprises L first vectors, each first vector of the L first vectors corresponds to a port of the CSI-RS, and L is a positive integer;
• wherein the set vectors further comprises a second group of vectors, the second group of vectors comprises Mv second vectors, each element in each second vector of the Mv second vectors corresponds to a precoding matrix, and Mv is a positive integer, the steps further comprising:
• determining whether to report bit mapping information according to Mv and KNZ;
• wherein the bit mapping information is used to indicate, in a non-zero bit, reported coefficients in first coefficients, the first coefficients comprise coefficients used to combine the set vectors as a precoding matrix;
• wherein KNZ is a number of coefficients reported to a network.