R1-2410344
discussion
Discussion on AI/ML based beam management
From KT
Summary
KT's technical document proposes 11 specific enhancements for AI/ML-based beam management in NR air interface, addressing UE-sided model consistency, resource set associations, and performance monitoring. The document focuses on supporting both associated ID-based and performance monitoring approaches for ensuring consistency between training and inference phases.
Position
KT advocates FOR multi-cell/cell-group level associated IDs (instead of cell-level only) to reduce UE complexity, FOR dual approach combining both associated ID-based and performance monitoring methods for consistency assurance, FOR Alt 2 using single CSI-ResourceConfigId for both Set A and Set B (over separate configurations), and FOR dedicated resource sets for monitoring with dynamic Top-K beam mapping. They push AGAINST cell-level only associated IDs that would create high UE burden and complexity.
Key proposals
- Proposal 1 (Sec 2.1): Support that NW-side additional conditions with the same associated ID are consistent for multiple cells or a cell group
- Proposal 2 (Sec 2.1): Support configuring the associated ID within CSI-RS resource configuration at least for data collection
- Proposal 4 (Sec 2.1): Support both performance monitoring-based approach and associated ID-based approach for ensuring consistency of NW-side additional conditions
- Proposal 5 (Sec 2.2): Support one CSI-ResourceConfigId for both Set A and Set B in the CSI-ReportConfig for inference
- Proposal 6 (Sec 2.2): Discuss how to indicate the resource sets for Set A and Set B with explicit indication or implicit indication using lowest resource set ID
- Proposal 7 (Sec 2.2): RAN1 support Option 2 for configuration for monitoring using dedicated resource set(s) and report configuration in dedicated CSI report configuration
- Proposal 8 (Sec 2.3): For Alt 1 of UE-assisted performance monitoring, support configuring the full set of Set A as the resource set for monitoring
- Proposal 9 (Sec 2.3): Support Alt 3 for Type 1 Option 2 of UE-sided model monitoring using RSRP difference information between predicted and measured L1-RSRP
- Proposal 10 (Sec 2.3): Support configuring a dedicated resource set for monitoring
- Proposal 11 (Sec 2.3): Support configuring a dedicated resource set for monitoring consisting of K CSI-RS resources where K equals the number of reported Top K beams