Patent ID: 11936455
Assignee: DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A channel state information feedback method, the method comprising:
sending, by a network-side device, codebook parameter information to a terminal;
receiving precoding matrix information sent by the terminal, wherein the precoding matrix information comprises specified coefficients and adjustment factors, wherein a same beam in an orthogonal beam group has same specified coefficients in first and second polarization directions, each of the specified coefficients comprises an amplitude coefficient and/or a phase coefficient, and the specified coefficients are a part of coefficients in a linear combination coefficient set;
determining linear combination coefficients except the specified coefficients in the linear combination coefficient set jointly according to the adjustment factors and the specified coefficients, to obtain the linear combination coefficient set;
precoding a communication signal according to the linear combination coefficient set.