CPC H04B 7/0626 (2013.01) [H04B 7/0478 (2013.01); H04L 5/0051 (2013.01)] | 20 Claims |
1. A base station, comprising:
a memory;
one or more processors configured to:
transmit a channel state information reference signal (CSI-RS) for CSI feedback; and
receive channel state information (CSI) feedback corresponding to one or more frequency parts at hierarchical precoding levels of a frequency band based on a hierarchical precoding scheme in response to providing the CSI-RS.
|