Channel measurement method and communications apparatus

An apparatus, comprising at least one processor, and one or more memories coupled to the at least one processor and storing programming instructions that configure the at least one processor to perform operations comprising:

• sending precoded reference signals, wherein the precoded reference signals are obtained by precoding reference signals based on K angle vectors but not based on a delay vector;
• receiving first indication information, wherein the first indication information is used to indicate P weighting coefficients corresponding to P angle-delay pairs, the P weighting coefficients are determined based on the precoded reference signals, each of the P angle-delay pairs comprises one of the K angle vectors and one of one or more delay vectors corresponding to the one angle vector, one or more delay vectors corresponding to each angle vector are preconfigured, and the P angle-delay pairs and the P weighting coefficients corresponding to the P angle-delay pairs are used to determine a precoding matrix, wherein both K and P are positive integers;
• and
• determining the precoding matrix based on the first indication information.

A non-transitory computer-readable storage medium, wherein the non-transitory computer-readable storage medium stores a program or instructions that configure the at least one processor to perform operations comprising:

• receiving precoded reference signals, wherein the precoded reference signals are obtained by precoding reference signals based on K angle vectors but not based on a delay vector;
• generating first indication information, wherein the first indication information is used to indicate P weighting coefficients corresponding to P angle-delay pairs, the P weighting coefficients are determined based on the precoded reference signals, each of the P angle-delay pairs comprises one of the K angle vectors and one of one or more delay vectors corresponding to the one angle vector, one or more delay vectors corresponding to each angle vector are preconfigured, and the P angle-delay pairs and the P weighting coefficients corresponding to the P angle-delay pairs are used to determine a precoding matrix, wherein both K and P are positive integers;
• and
• sending the first indication information.

A non-transitory computer-readable storage medium, wherein the non-transitory computer-readable storage medium stores a program or instructions that configure the at least one processor to perform operations comprising:

• sending precoded reference signals, wherein the precoded reference signals are obtained by precoding reference signals based on K angle vectors but not based on a delay vector;
• receiving first indication information, wherein the first indication information is used to indicate P weighting coefficients corresponding to P angle-delay pairs, the P weighting coefficients are determined based on the precoded reference signals, each of the P angle-delay pairs comprises one of the K angle vectors and one of one or more delay vectors corresponding to the one angle vector, one or more delay vectors corresponding to each angle vector are preconfigured, and the P angle-delay pairs and the P weighting coefficients corresponding to the P angle-delay pairs are used to determine a precoding matrix, wherein both K and P are positive integers;
• and
• determining the precoding matrix based on the first indication information.