R1-2407616
discussion
Discussion on specification support for AI/ML-based beam management
From FUTUREWEI
Summary
This Futurewei document presents 8 proposals for specification support of AI/ML-based beam management in NR Release 19, covering performance monitoring, model inference, data collection, and assistance information aspects. The company advocates for reusing existing CSI frameworks as much as possible to minimize specification complexity while rejecting overly complex new metrics like probability and confidence information.
Position
Futurewei strongly advocates for reusing existing CSI frameworks as much as possible to minimize specification effort and complexity. They oppose introducing new complex metrics like probability information and confidence levels (rejecting Opt 3 and Opt 4), preferring simpler, more testable approaches. They favor measured L1-RSRP over predicted values when available and support practical enhancements like increasing maximum beam reporting from 4 to 8 beams.
Key proposals
- Proposal 1 (Performance Monitoring): Support Alt 1 for UE-assisted performance monitoring using Top 1 or Top K beam prediction accuracy with full Set A configured for monitoring
- Proposal 2 (Network-sided Model): Support L1-RSRPs and beam information of up to M beams within X dB gap, increasing maximum M from 4 to 8 beams
- Proposal 3 (UE-sided Model Config): Use CSI-ReportConfig for inference results reporting with Alt 2 (one CSI-ResourceConfigId for both Set A and B) or Alt 3 (separate CSI-ResourceConfigIds)
- Proposal 4 (UE-sided Model Content): Do NOT support Opt 3 (probability information) and Opt 4 (confidence information) for inference results reporting
- Proposal 5 (RSRP Reporting): Support Option B for predicted Top K beams - use measured L1-RSRP when available, predicted RSRP otherwise
- Proposal 6 (Data Collection): Support network providing multiple DL RS transmission configurations with UE reporting its supported/preferred ones
- Proposal 7 (Data Collection): Use RS ID as implicit beam ID indication and reuse existing L1-RSRP reporting mechanisms
- Proposal 8 (Assistance Info): Confirm working assumption that associated ID can be configured within CSI framework