Time-domain Channel Property Feedback in 5G-Advanced and Beyond
Per Ernstr\"om, Siva D. Muruganathan, Keerthi Kumar Nagalapur, Fredrik, Athley

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.
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Taxonomy
TopicsAdvanced MIMO Systems Optimization · Radio Frequency Integrated Circuit Design · VLSI and Analog Circuit Testing
