TCL · 10.5.2.4

TCL proposes retaining NR's hybrid architecture of analog antennas and digital links as a baseline for 6G millimeter wave and 7-24 GHz bands, evolving NR beam management with targeted enhancements. They propose that legacy periodic/semi-persistent beam reporting and UE-initiated beam reporting should both be supported as baseline mechanisms, and propose studying UE-initiated/event-driven beam reporting specifically in MTRP scenarios, with notification information enhanced to carry more event details beyond SR-like reuse. They propose adopting the unified TCI framework from day one while ensuring flexibility and scalability and reducing signaling overhead and latency, and propose extending the framework to serve both communication and sensing. They propose introducing UE-initiated beam failure recovery mechanisms and UE-initiated candidate beam extension to reduce latency and increase flexibility compared to network-controlled configurations. They propose studying a unified AI/ML-based framework that integrates RS configuration and measurement configuration for both BFD and BFR, with spatial domain beam prediction across inter-port, inter-TRP, and inter-cell levels to reduce RS overhead and enable proactive beam switching. They propose studying frequency-division and time-division beam scanning to reduce initial access latency as beam counts scale, and propose completing early beam refinement before early CSI acquisition, with msg2-related and msg4-related channel repetition supported for beam refinement. They propose studying a new discrete spectrum mechanism referred to as SCMC with enhanced beam management for multi-carrier, and propose studying large-bandwidth beam management around 7 GHz with differentiation between single and dual RF chain UE architectures.