R1-2410922
LS out
LS on signalling feasibility of dataset and parameter sharing
From Qualcomm
Summary
This is a liaison statement from RAN1 to RAN2 requesting feedback on the feasibility of standardized signaling for sharing AI/ML model parameters and datasets between network and UE sides for two-sided CSI compression. The document contains only one explicit observation and no formal proposals, focusing instead on technical specifications and requirements.
Position
Qualcomm advocates FOR standardized signaling approaches to enable inter-vendor collaboration in AI/ML-based CSI compression, specifically supporting Options 3a-1 and 4-1 for parameter and dataset sharing with offline UE-side engineering. They are pushing FOR feasibility assessment of over-the-air signaling methods while addressing concerns about overhead and proprietary information disclosure.
Key proposals
- Action to RAN2: RAN1 requests feedback on feasibility of standardized signaling (over-the-air and/or other approaches) for NW-side sharing of model parameters and/or dataset to UE
- Option 4-1: sharing dataset containing N1 samples of {target CSI, CSI feedback} corresponding to input and output of a nominal encoder
- Option 3a-1 without target CSI: sharing parameters corresponding to a nominal encoder
- Option 3a-1 with target CSI: sharing parameters corresponding to a nominal encoder, along with dataset containing N2 samples of {target CSI}
- Observation (RAN1 #118): Option 5 alone doesn't fully address inter-vendor collaboration complexity, but Option 5 has potential performance benefit and flexibility compared to Option 3
- Agreement (RAN1-116): Study Option 1 (Fully standardized reference model), Option 2 (Standardized dataset), Option 3 (Standardized reference model structure + Parameter exchange), Option 4 (Standardized data/dataset format + Dataset exchange), Option 5 (Standardized model format + Reference model exchange)
- Agreement (RAN1 #116-bis): For Option 3, define sub-options 3a (offline engineering at UE-side) and 3b (direct inference at UE without offline engineering)
- Conclusion (RAN1 #117): Standardized signalling can be used for parameter/model exchange in option 3a/5a and 3b to alleviate inter-vendor training collaboration complexity
- Agreement (RAN1 #118): Continue study of Direction A (UE-side offline engineering), Direction B (on-device operation), Direction C (fully standardized reference models)
- Agreement (RAN1 #118-bis): For option 4-1 and 3a-1, there is no proprietary information concern of disclosing encoder input/output or parameters from NW side to UE side
Revision chain
2 versions in this meeting · oldest first
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[Draft] LS on signalling feasibility of dataset and parameter sharing
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R1-2410922 ← you are here LS out approved Final