RAN1 / #120 / NR_AIML_air / Verify

Tejas Networks Limited · 9.1.3

Specification support for CSI prediction · RAN1#120 · Source verification
the AI's delta new vs RAN1#119
Tejas Networks Limited is a new contributor in the current meeting data. They propose using an associated ID to align training and inference conditions, citing interference and TxRU mapping variations. They support AI/ML model identification via Model ID in LCM mode and propose reusing Rel-18 Type II Doppler codebook CSI-RS configurations. They prioritize Type 1 performance monitoring where the UE calculates metrics and reports only if below a threshold, utilizing intermediate KPIs like SGCS or NMSE.
AI-synthesized from contributions · all text is paraphrased
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Contributions at RAN1#120 · 1 doc

R1-2500406 discussion not treated 3gpp.org ↗
Specification support for CSI Prediction
Position extracted by AI
Tejas Networks proposes using an associated ID to align training and inference conditions, arguing that variations in interference and network-side conditions like TxRU mappings degrade AI model performance. They support AI/ML model identification via Model ID in LCM mode, requiring the Network to identify models and the UE to indicate support. For data collection, they propose reusing Rel-18 Type II Doppler codebook CSI-RS configurations and separating resources for inference from those for training/monitoring. They prioritize Type 1 performance monitoring, where the UE calculates metrics and reports output only if below a Network-assigned threshold, utilizing intermediate KPIs like SGCS or NMSE.
Summary
Tejas Networks discusses AI/ML-based CSI prediction for Rel-19, focusing on consistency between training and inference, data collection mechanisms, and performance monitoring. The document presents 16 proposals and 3 observations addressing issues such as interference variations, TxRU mapping impacts, and the need for specific CSI-RS configurations.

Prior contributions at RAN1#119 · 1 doc · Nov 18, 2024

R1-2409751 discussion not treated 3gpp.org ↗
Discussion on study for AI/ML CSI prediction
Position extracted by AI
Tejas Networks proposes using an associated ID to align training and inference conditions, mitigating performance degradation from interference variations and TxRU mapping differences. They support AI/ML model identification in LCM mode, where the Network identifies models by Model ID and the UE indicates support. For data collection, they propose reusing Rel-18 Type II Doppler codebook CSI-RS configurations and allowing the UE to report the minimum required CSI-RS instances. Regarding performance monitoring, they prioritize Type 1 (Network-configured) monitoring, proposing that the Network assigns threshold criteria and the UE reports monitoring output only when it falls below these thresholds to reduce signaling overhead. They define specific specification impacts for monitoring, including model switching, parameter updates, and fallback operations based on metrics like SGCS and NMSE.
Summary
Tejas Networks discusses AI/ML for CSI prediction in Rel-19, focusing on ensuring consistency between training and inference, Life Cycle Management (LCM) modes, data collection mechanisms, and performance monitoring strategies. The document presents 14 proposals and 3 observations addressing issues such as interference variations, model identification, CSI-RS configuration, and threshold-based reporting.
How this was derived
The AI extracted the "position extracted" field above directly from each Tdoc during summarization. For the delta summary at the top, the AI compared Tejas Networks Limited's consolidated stance at RAN1#120 against their stance at RAN1#119 and classified the change as new. Always verify critical claims against the original Tdocs linked above.