Information transmission method and device, and storage medium

An information transmission method, applied to a second communication node, comprising:

• determining configuration information;
• and
• sending the configuration information to a first communication node in a manner that the first communication node reports channel state information according to the configuration information;
• wherein the channel state information comprises a precoding matrix indicator, and a precoding matrix corresponding to the precoding matrix indicator comprises a combination of a first coefficient, a first group of vectors and a second group of vectors;
• and
• wherein the precoding matrix indicator being indicating R precoding matrices for each channel quality indicator sub-band is determined according to a number of vectors of the second group of vectors, and R is a positive integer.