  The availability of time-variability information of a channel between a
network node and a user equipment at the network side allows a 5G network to
optimally configure its parameters to maximize both user and system
performance. In the Release 18 enhancements of 5G-Advanced, a time-domain
channel property (TDCP) feedback that indicates the degree of time-variability
of the channel is being standardized. In this article, we describe the
standardized TDCP feedback and its applications. The benefit of the feedback is
further illustrated through numerical evaluations.
