Time-domain Channel Property Feedback in 5G-Advanced and Beyond

TL;DR

This paper discusses the standardization and application of time-domain channel property feedback in 5G-Advanced, which helps optimize network parameters by providing information on channel time-variability, enhancing performance.

Contribution

It introduces the standardized TDCP feedback in 5G-Advanced and demonstrates its benefits through numerical evaluations.

Findings

TDCP feedback effectively indicates channel time-variability.

Using TDCP improves network parameter optimization.

Numerical results show performance gains with TDCP feedback.

Abstract

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.