Huawei · 9.1.4.1

Huawei argues that for Direction A inter-vendor collaboration, sharing datasets (Option 4-1) incurs less proprietary risk than sharing model parameters (Option 3a-1/3b). They propose that model backbone information is unnecessary for Option 4-1, allowing UE autonomy in structure selection guided by NW performance targets. Regarding temporal domain CSI compression, Huawei presents technical cases showing that UCI missing causes significant performance loss due to accumulated CSI misalignment, proposing reset mechanisms to mitigate this. For NW-side data collection, they prioritize precoding matrices over channel matrices and advocate for Rel-16 eType II codebook with enhanced parameters (e.g., L=8, 10, 12) to balance overhead and accuracy. They oppose specifying UE-side proxy models for monitoring, citing imbalanced generalization and excessive LCM burden, instead supporting NW-side ground-truth CSI monitoring and UE-side precoded RS monitoring.

Huawei advocates for Direction A (dataset/model sharing for UE-side offline engineering) over Direction B (direct parameter sharing) due to significantly lower air-interface overhead, supports prioritizing Option 4 (dataset sharing) and simpler sub-options (4-1, 4-2) over complex combinations (4-3), pushes against UE-side proxy model monitoring due to generalization issues and LCM complexity, and strongly favors precoding matrix over channel matrix as model input with eType II CB quantization using enhanced parameters.