A user equipment (UE) includes a receiver that receives a Reference Signal (RS) from a base station (BS), and a transmitter that transmits, to the BS, only precoding-related information used for precoding in the BS in response to the RS. The precoding-related information is at least one of a RS Resource Indicator (RRI) that identifies a radio resource used for RS BS transmission, a Precoding Matrix Indicator (PMI), a Rank indicator (RI), and a Reference Signal Received Power (RSRP). The transmitter only periodically transmits the only precoding-related information. The receiver receives a signal precoded using the precoding-related information by the BS.