CPC H04B 7/0456 (2013.01) [H04L 5/0048 (2013.01); H04L 25/0202 (2013.01); H04W 72/23 (2023.01)] | 25 Claims |
1. A method, comprising:
transmitting a precoded reference signal, wherein the precoded reference signal is obtained by precoding a reference signal based on K angle vectors and L delay vectors; and
receiving first indication information, wherein:
the first indication information indicates P weighting coefficients corresponding to P angle-delay pairs;
the P weighting coefficients are determined by using the precoded reference signal;
the P angle-delay pairs and the P weighting coefficients corresponding to the P angle-delay pairs are used to determine a precoding matrix;
each of the P angle-delay pairs comprises one of the K angle vectors and one of the L delay vectors; and
P, K, and L are all positive integers.
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