csi-rs hybrid optimized for fd-pampering

摘要

the hybrid channel state information reference signal (csi), (csi-rs), for multiple inputs, multiple full outputs (fd-maximum) where a base station sets up a first csi-rs resource is discussed. for non-precoded csi-rs and a second csi-rs feature for beam-forming csi-rs. The first and second csi-rs features are associated with the same csi process in a hybrid csi-rs operation. The eu provides a first csi report including a first classification indicator and pre-coding matrix indicator (pmi) based on the measurement of non-pre-coded csi-rs. the base station can use this first csi report for beamforming of csi-rs beamforming. which additionally provides a second csi report including a second classification, a second pmi and cqi based on the measurement of beam-forming csi-rs. Additional aspects may provide a base station to aggregate multiple two-port csi-rs resource configurations within a single multiport csi-rs resource configuration that can be dynamically shared between different units.