VECTOR INDICATION METHOD FOR CONSTRUCTING PRECODING VECTOR, AND COMMUNICATION APPARATUS

摘要

The present application provides a vector indication method for constructing a precoding vector, and a communication apparatus. The method comprises: a terminal device generates and sends first indication information, the first indication information being used for indicating one or more frequency domain vectors, the one or more frequency domain vectors being used for constructing precoding vector(s) corresponding to one or more frequency domain units in a frequency domain unit group, and the length of the frequency domain vector(s) being determined by the number of frequency domain units comprised in a bandwidth occupied from the first frequency domain unit to be reported to the last frequency domain unit to be reported in the frequency domain unit group, wherein the frequency domain unit group comprises one or more frequency domain units, and the bandwidth occupied by the frequency domain unit group is part or all of a reported bandwidth. The length of the frequency domain vector(s) is determined on the basis of the method, so that the selected frequency domain vector can maintain continuity of a frequency domain, and accurately reflect the changing law of a channel in the frequency domain, thereby helping obtain high feedback precision.