COMMUNICATION SYSTEM AND METHOD, BASE STATION, AND USER TERMINAL

摘要

Disclosed is a method in a mobile communication system comprising a base station communicating with at least one user terminal via a radio link, wherein the base station is adapted to create a precoding matrix for applying to data transmitted to the user terminal by using a channel estimate determined from Uplink Reference Signal transmitted from the user terminal to the base station, the method comprising: the base station notifying to the user terminal the precoding matrix, and the user terminal estimating and reporting a Signal to Interference pluses Noise Ratio (SINR) for each data layer conditioned on the notified precoding matrix.