CMCC · 9.1.4.1
CSI compression ·
RAN1#119 · Source verification
Claude's delta
new
vs RAN1#118bis
CMCC newly joined the discussions with support for multiple directions while leveraging existing codebook foundations.
AI-synthesized from contributions · all text is paraphrased
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Contributions at RAN1#119 · 1 doc
Discussion on AI/ML for CSI compression
Position extracted by Claude
CMCC prioritizes inter-vendor collaboration Directions A and B for further study, arguing they offer better performance and lower specification effort than Direction C. They propose that for Direction A, the NW-side must share dataset information and performance targets to enable UE-side offline engineering, while acknowledging that over-the-air parameter exchange introduces extra overhead. For Direction B, they assert there is no proprietary information disclosure concern and that common encoders are feasible for UEs with similar conditions within a cell. Regarding performance monitoring, CMCC prioritizes NW-side monitoring based on ground-truth CSI reports and UE-side monitoring based on recovery CSI indication. Finally, they propose using Rel-16 eType-II and Rel-18 Doppler codebooks as starting points for ground-truth CSI data collection, with enhanced parameter values to ensure high resolution.
Summary
CMCC presents evaluation results for AI/ML-based temporal domain CSI compression (Cases 2 and 3), demonstrating significant SGCS gains over Rel-16 and Rel-18 benchmarks. The document proposes prioritizing inter-vendor collaboration Directions A and B, specifies requirements for dataset/parameter exchange, and recommends NW-side monitoring and enhanced codebook structures for ground-truth data collection.
Prior contributions
CMCC has no prior contributions to 9.1.4.1 in the meetings currently tracked. This is either a new contributor to this sub-topic or the earliest meeting in our history.
How this was derived
Claude extracted the "position extracted" field above directly from each Tdoc during summarization.
For the delta summary at the top, Claude compared CMCC's consolidated stance at RAN1#119
against their stance at RAN1#118bis and classified the change as
new.
Always verify critical claims against the original Tdocs linked above.