Ericsson · 9.1.3

Ericsson argues inapplicability of the inconsistency issue identified for UE-sided spatial beam prediction to the UE-sided CSI prediction use case, which relies on temporal domain correlation rather than spatial beam sets. They conclude that no specification enhancement is required to ensure consistency between training and inference regarding UE speed, deployment scenario, carrier frequency, UE distribution, NW antenna tilt, or NW TXRU mapping, citing negligible performance degradation (0-4% for tilt, -1~4% for TXRU mapping) in generalization evaluations. They propose studying specification impacts on CSI-RS configuration to indicate the association between CSI-RS resources in the observation window and ground-truth labels in the prediction window for both training and monitoring data collection. They support specification impacts for inference to enable combined periodic and aperiodic (or semi-persistent) CSI-RS configurations to improve prediction performance with long periodicities like 20 ms. They oppose Type 2 based performance monitoring, citing large reporting overhead and significant NW complexity.