R1-2410107
LS out
Draft reply on LS on applicable functionality reporting for beam management UE-sided model
From OPPO
Summary
This is a liaison statement from RAN1 (OPPO) responding to RAN2's questions about AI/ML beam management UE-sided model functionality reporting for Release 19. The document provides detailed replies to 10 questions covering UE capability reporting, network-side conditions, inference configuration, and functionality activation procedures.
Position
OPPO advocates for flexible UE capability reporting with optional associated IDs for network-side conditions, supporting reuse of legacy CSI reporting mechanisms for AI/ML beam management while maintaining UE autonomy in determining applicable functionalities through model availability when network conditions are not explicitly provided.
Key proposals
- Reply to Q1: UE reports Rel-19 AI/ML-specific FGs (including components and corresponding value ranges) as UE-capability information/parameters in Step 2
- Reply to Q2: RAN1 agreed to support associated ID to ensure consistency of NW-side additional condition across training and inference for UE-sided model for BM-Case 1 and BM Case 2
- Reply to Q4-1: Associated ID(s) can be optionally configured by NW in Step 3 to represent NW-side additional conditions, with UE able to determine applicable functionalities even without associated ID via model availability
- Reply to Q4-2: gNB is not required to configure inference resources in Step 3 for UE to determine applicable functionalities
- Reply to Q5: In Step 4, UE reports the applicable functionality associated with one or more associated ID(s)
- Reply to Q6: Inference resource sets for Set B and Set A are configured within CSI framework (CSI-ReportConfig) in Step 5
- Reply to Q7: For Option 1, CSI report configuration for UE-side model inference cannot be activated immediately upon receiving Step 3
- Reply to Q8: For Option 2 or Option 3, after receiving inference configuration in Step 5, legacy CSI reporting timeline can be reused by UE
- Reply to Q9: Multiple CSI reports for inference for UE-side model can be configured/activated/triggered, which is up to UE capability
- Reply to Q10: Legacy CSI reporting (periodic, aperiodic and semi-persistent CSI reporting) can be re-used for beam management