22.2.1 Introduction

AI/ML-based beam management utilizes intra-cell downlink beam prediction of the serving cell to reduce measurement/RS overhead and to improve the accuracy of beam selection. Two types of beam prediction are supported:

• Spatial-domain downlink transmission beam prediction for one set of beams based on measurement results of another set of beams where the set of beams for prediction can be SSB or CSI-RS beams and another set of beams for measurement can be SSB or CSI-RS beams; and
• Temporal-domain downlink transmission beam prediction for one set of beams based on historic measurement results of another set of beams (these two sets may be different).

For AI/ML-based beam management, both Network-side model and UE-side model are supported.