R1-2409840
discussion
Discussion on specification support for beam management
Summary
This 3GPP RAN1 document from Ruijie Networks presents 5 technical proposals for AI/ML-based beam management in NR air interface, focusing on UE-side model configuration, timing references, associated ID management, performance monitoring, and applicability reporting procedures.
Position
Ruijie Networks advocates FOR flexible timing reference mechanisms based on Set B measurements rather than uplink slots, separate associated ID configuration for Set A/B to handle different beam scenarios, dedicated monitoring configurations to avoid mixing inference and monitoring requirements, and CSI framework-based applicability reporting. They push FOR aperiodic CSI-RS support in BM-Case 2 AGAINST limitations to only periodic/semi-persistent resources.
Key proposals
- Proposal 1 (Sec 2.1): For BM-Case 2 of UE-side model, support Option 3 for reference time of earliest predicted results - based on latest transmission occasion of CSI-RS/SSB resource in Set B, no later than CSI reference resource
- Proposal 2 (Sec 2.1): For UE-side AI/ML model BM-Case 2, support aperiodic CSI-RS for CMR at least for inference and Set B measurements
- Proposal 3 (Sec 2.2): For associated ID configured in CSI framework for UE-sided model, support Alt 2 - configure associated ID separately for Set A and Set B, allowing different IDs
- Proposal 4 (Sec 2.3): For monitoring Type 1 Option 2 of UE-side model monitoring, support Option 2 - dedicated resource sets and report configuration in separate CSI report configuration for monitoring
- Proposal 5 (Sec 2.4): For applicability for inference for UE-side model, support Option 1 - NW configures CSI-ReportConfig for inference with associated ID in CSI framework, UE reports applicability