A METHOD AND APPARATUS FOR CSI COMPRESSION IN TIME DOMAIN

Abstract

Inter-alia, a method is disclosed comprising: obtaining a time domain and/or doppler domain information, based on measuring time variations of a channel from tracking reference signal, TRS; and reporting the time domain and/or doppler domain information and a channel state information, CSI, wherein the CSI is obtained by measuring on CSI reference signal, CSI-RS. Further, a method is disclosed comprising: receiving time domain and/or doppler domain information and at least one channel state information, CSI; and reconstructing a time domain function based on the time domain and/or doppler domain information and a precoder matrix based on CSI. It is further disclosed according apparatuses, computer programs and systems.

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