US 2019/0173538 A1 · PRECODING MATRIX DETERMINING METHOD AND APPARATUS

Abstract

Embodiments of this application disclose a precoding matrix determining method and apparatus, to determine a stage-1 precoding matrix based on indication information that is of a spatial correlation matrix and that is fed back by a terminal, thereby implementing three-dimensional precoding based on a channel state and increasing a channel capacity. The method includes: sending, by a base station, a plurality of groups of first reference signals, where the plurality of groups of first reference signals are in a one-to-one correspondence with a plurality of dimensions of an antenna array, and each of the plurality of groups of first reference signals is used by a terminal to estimate spatial correlation matrix information in a corresponding dimension; receiving the spatial correlation matrix information fed back by the terminal based on the plurality of groups of first reference signals; and determining a stage-1 precoding matrix based on the spatial correlation matrix information.

Claims20

Dependent claims

A precoding matrix determining method, comprising:

sending, by a base station, a plurality of groups of first reference signals, wherein the plurality of groups of first reference signals are in a one-to-one correspondence with a plurality of dimensions of an antenna array, each of the plurality of groups of first reference signals for use by a terminal to estimate spatial correlation matrix information in a corresponding dimension;
receiving, by the base station, the spatial correlation matrix information fed back by the terminal based on the plurality of groups of first reference signals;
and
determining, by the base station, a stage-1 precoding matrix based on the spatial correlation matrix information.

1 more element

A precoding matrix determining method, comprising:

receiving, by a terminal, a plurality of groups of first reference signals sent by a base station, wherein the plurality of groups of first reference signals are in a one-to-one correspondence with a plurality of dimensions of an antenna array, and each of the plurality of groups of first reference signals is used by the terminal to estimate spatial correlation matrix information in a corresponding dimension;
estimating, by the terminal, the spatial correlation matrix information based on the plurality of groups of first reference signals;
and
sending, by the terminal, the spatial correlation matrix information to the base station for determining a stage-1 precoding matrix.

1 more element

A precoding matrix determining apparatus, comprising:

a receiver, configured to receive a plurality of groups of first reference signals sent by a base station, wherein the plurality of groups of first reference signals are in a one-to-one correspondence with a plurality of dimensions of an antenna array, and each of the plurality of groups of first reference signals is used by the terminal to estimate spatial correlation matrix information in a corresponding dimension;
a processor, configured to estimate the spatial correlation matrix information based on the plurality of groups of first reference signals;
and
a transmitter, configured to send the spatial correlation matrix information to the base station for for determining a stage-1 precoding matrix.

1 more element

Dependencies are inferred from the claim text.

Precoding matrix determining method and apparatus

Life of this patent

Precoding matrix determining method and apparatus

Life of this patent

Abstract

Claims20