SHARED CSI-RS FOR PARTIAL-RECIPROCITY BASED CSI FEEDBACK

摘要

A method, system and apparatus are disclosed for shared channel state information reference signal (CSI-RS) for partial-reciprocity based CSI feedback. In one embodiment, a user equipment (UE) is configured to use a CSI-RS resource, the CSI-RS resource being a cell-common CSI-RS resource and the CSI-RS resource comprising a plurality of CSI-RS ports; receive (i) a frequency domain, FD, indication indicating a set of FD components associated with the CSI-RS resource and/or (ii) a port indication indicating a set of CSI-RS ports associated with the CSI-RS resource; optionally, determine a subset in the set of FD components and/or in the set of CSI-RS ports that is indicated to the UE; and transmit a CSI report that is based at least in part on the CSI-RS resource and optionally based on at least one of the FD indication, the port indication and/or the determined subset.