How to map csi-rs port to the antenna unit, the base station and the user equipment

A disclosure communication method to map the CSI-RS port to the antenna units arranged in an antenna array system, a base station, and to implement the user equipment. A The communication method includes the following steps: selecting a group of antenna units, a step of mapping the CSI-RS port in the first CSI-RS transmission period or the first frequency resource area , comprising the steps of selecting a different group of antenna units, maps the CSI-RS port in the second CSI-RS transmission period or the second frequency resource region. The method according to the present disclosure, the base station, and the user equipment, each antenna unit, to obtain a fairly good channel estimation performance in obtaining a relatively fair opportunity or the UE side for transmitting the CSI-RS signal Become. .The 12