And a notification method for determining the positional relationship between the antenna ports, system and apparatus

The present invention discloses a method for notification and determining the positional relationship of an antenna ports, system and device, the network side configures DMRS reference indication signaling CSI-RS, and / or for indicating the reference DMRS signaling indicating whether the CSI-RS enable first enable indication signaling; Alternatively, the network side is further configured each CSI-RS co-registration of the reference position indication signaling CRS, and / or for indicating that the CSI-RS each co-registration of the reference position CRS signaling indicating whether to enable a second enable indication signaling. According to the present invention, the reference signal that the terminal port frequency synchronization reference time can be determined, thereby providing frequency synchronization accuracy.