Methods and apparatuses for providing antenna port related information in a communications network

The embodiments herein relate to a method performed by a radio base station (800), a radio base station (800), a method performed by a UE (700) and a UE (700) for providing antenna port-related information to the radio base station in a communications network. The method performed by the UE (700) comprises: (501) receiving at least one DownLink (DL) beam from the radio base station (800); and (502) reporting at least one Sounding Reference Signal (SRS) resource identification information for said at least one received DL beam, wherein the SRS resource identification information is associated with at least one antenna port of the UE (700) receiving the corresponding DL beam.