R1-2500029
LS in
Reply on AIML data collection
From Nokia
Summary
This document is a reply from SA5 to TSG RAN regarding AI/ML data collection mechanisms for NR Air Interface. It outlines existing SA5-defined collection methods (MDT, NG-RAN UE measurements, QoE) and analyzes their relevance to four specific options for UE-side model training data collection. The document contains 2 summary points (3-1 and 3-2) and 1 action item, totaling 3 distinct proposals/observations.
Position
SA5 presents technical observations on the applicability of existing standardized mechanisms (MDT, NG-RAN UE measurements, QoE) to AI/ML data collection options. For Option 1a, SA5 notes the absence of standardized management support. For Options 1b and 2, SA5 proposes evaluating potential management support for the MNO-controlled data collection server, contingent on progress in SA2 and RAN. For Option 3, SA5 proposes studying the feasibility of utilizing existing Control Plane tunnels (TCE for MDT, MCE for QoE) and User Plane tunnels, explicitly requiring that these studies address RAN requirements for full controllability, full visibility, and future-proofness. SA5 asserts its involvement in Option 1b and 2 discussions is necessary due to management and control implications.
Key proposals
- Observation (Sec 2.1): SA5 identifies existing standardized mechanisms for UE data collection, specifically MDT (TS 32.422), NG-RAN UE level measurements (TS 28.558), and QoE data collection (TS 28.405).
- Observation (Sec 2.2 Option 1a): SA5 states that no standardized management support is currently identified from SA5 for Option 1a.
- Proposal (Sec 2.2 Option 1b/2): SA5 proposes evaluating potential management support needed to manage the 'Server for data collection for UE-side model training' (controlled by MNO) based on progress in SA2 and RAN.
- Proposal (Sec 2.2 Option 3 CP): SA5 proposes studying the feasibility of carrying the 'Server for data collection' functionality via TCE (MDT mechanism) or MCE (QoE mechanism) for Control Plane (CP) tunneling.
- Proposal (Sec 2.2 Option 3 UP): SA5 proposes studying the feasibility of User Plane (UP) tunneling methods covering UE, gNB, OAM, and the data collection server, including coordination with SA2.
- Summary Point 3-1 (Sec 3): SA5 requests studying the feasibility of the CP tunnel approach using MDT measurements, ensuring it meets RAN requirements for full controllability, full visibility, and future-proofness.
- Summary Point 3-1 (Sec 3): SA5 requests studying the feasibility of the UP tunnel between UE and OAM, ensuring it meets RAN requirements for full controllability, full visibility, and future-proofness, along with SA2 coordination.
- Summary Point 3-2 (Sec 3): SA5 asserts that SA5 should be involved in discussions for Option 1b and Option 2 due to potential management and control requirements.
- Action Item (Sec 4): SA5 requests RAN to consider the summary points and inform SA5 of work progress to assist in SA5 work planning.