CHANNEL FEEDBACK METHOD AND RELATED DEVICE

• Main Authors: ZHOU, Yongxing, ZHANG, Ruiqi
• Format: Patent
• Language: English; French; German
• Published: 23.02.2022
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

Embodiments of this application disclose a channel feedback method and a related device, to reduce energy dispersion caused after a Fourier transform operation, reduce a quantity of coefficients that need to be reported, and reduce uplink resource overheads. The method in the embodiments of this application includes: generating, by a terminal device, first information, where the first information includes parameters q,m1,m2,...,mL,and indication information of a vector V; q is an integer, and q<Q; Q is an integer, and Q > 1; 0 ≤ml≤ N - 1, and 1 ≤l≤L; L>1, N, L, andlare integers, and N is a quantity of subbands in a frequency domain bandwidth; and the vector V includes L elements and satisfies V=Fq×C, where C is a vector formed by N elementsc1,...,cN, C= [c1c2··· cN]T,ckis used to indicate channel state information on a kthfrequency domain subband,ckis a complex number, a modulus ofckis |ck|≤1, and 1 ≤k ≤N ; and sending, by the terminal device, the first information to a network device.