A METHOD AND A BASE STATION FOR TRANSMITTING A CSI-RS, AND A METHOD AND A USER EQUIPMENT FOR RECEIVING THE CSI-RS

摘要

A base station in a wireless communication system transmits a CSI-RS of a cell every l×N subframes or l×N ms with muting CSI-RS REs of a neighboring cell every m×N subframes. A BS can estimate channel state of the neighboring cell with higher accuracy by using a CSI-RS of the neighboring cell received in the muted REs.