R1-2409786
discussion
Discussion on RAN2 LS on applicable functionality reporting for beam management UE-sided model
From Apple
Summary
Apple analyzes three options for AI/ML beam management UE-side model configuration agreed at RAN1 #118bis, focusing on the signaling flow between network and UE. The document raises four key proposals regarding the investigation of these options, the dependencies of dynamic UE capability reporting, the definition of association IDs, and the activation timing of AI-based configurations.
Position
Apple proposes that RAN1 thoroughly investigate the three options for AI/ML beam management UE-side model configuration agreed at RAN1 #118bis, arguing against rushing into a design due to the far-reaching impact on UE-side model operation. They question whether dynamic UE capability reporting in Step 4 depends on both NW side beam configuration (Set A/Set B size, beam codebook, mapping) and report quantity, or solely on the NW side beam configuration. Apple seeks confirmation that different NW side beam configurations result in different association IDs, implying the association ID must represent the specific NW side condition. Furthermore, they require confirmation that AI-based beam management configurations are NOT activated immediately after Step 3, regardless of the option chosen, to prevent UE reporting errors before capability confirmation.
Key proposals
- Proposal 1 (Sec 1): RAN1 should thoroughly investigate different Options agreed in RAN1 #118bis.
- Proposal 2 (Sec 1): RAN1 should confirm whether the dynamic UE capability (step 4) depends on NW side beam configuration and report quantity, or just NW side beam configuration.
- Proposal 3 (Sec 1): RAN1 should confirm whether different NW side beam configuration (set A/set B size, beam codebook and mapping) will result in different association ID.
- Proposal 4 (Sec 1): RAN1 should confirm that for AI based beam management configuration is NOT activated after step 3 regardless which option is used.
- Proposal 1 (Sec 2): RAN1 should thoroughly investigate different Options agreed in RAN1 #118bis.
- Proposal 2 (Sec 2): RAN1 should confirm whether the dynamic UE capability (step 4) depends on NW side beam configuration and report quantity, or just NW side beam configuration.
- Proposal 3 (Sec 2): RAN1 should confirm whether different NW side beam configuration (set A/set B size, beam codebook and mapping) will result in different association ID.
- Proposal 4 (Sec 2): RAN1 should confirm that for AI based beam management configuration is NOT activated after step 3 regardless which option is used.