CHANNEL STATE INFORMATION FEEDBACK METHOD AND APPARATUS, USER EQUIPMENT, AND BASE STATION

摘要

Embodiments of the present invention provide a channel state information (CSI) feedback method and apparatus, user equipment, and a base station. The method, performed by a user equipment device, includes: pre-synchronizing, between the user equipment device and a base station, a basis matrix that includes sparsity of CSI in a frequency domain and a space domain; receiving pilot information from the base station; determining, according to the pilot information, a CSI information matrix that includes information about the frequency domain and the space domain of CSI; determining data by using the CSI information matrix; and feeding back the data to the base station, so that the base station restores the corresponding CSI information from the data by using the basis matrix.

主权项

1. A channel state information (CSI) feedback method for use by a terminal device, comprising:
receiving a pilot signal from a base station; constructing, according to the pilot signal, a CSI information matrix comprising frequency domain information and space domain information of the CSI; determining data to be transmitted to the base station by using the CSI information matrix; and transmitting the data to the base station, so that the base station restores the CSI information matrix from the data by using a basis matrix, comprising sparsity of CSI in the frequency domain and the space domain, that is pre-synchronized with the terminal device.