method of sending channel state information, method of receiving channel state information, communication device, communication device, network device, computer storage media, and communication system

摘要

a method of sending channel state information, a method of receiving channel state information, and a device are revealed to reduce the resource overheads required when a terminal device feeds back to a network device in a pre-coding matrix based on high-precision codebook. the method includes: determining, by a terminal device, a pre-coding matrix w; sending a signal including csi to a network device by the terminal device; obtain, by the network device, a ri and indication information based on the signal including the csi; obtain, by the network device, a pmi2 based on the ri and the indication information; and determining, by the network device, the precoding matrix w based on the classification indicator ri and the second precoding matrix indicator pmi2.