NEC · 9.1.2

NEC proposes deferring second-priority cases (2a/2b) to Rel-20 to focus Rel-19 efforts on first-priority cases (1, 3a, 3b). For model inputs, NEC requires the LMF to determine consistent sampling parameters (Nt', k) for enhanced measurements in Case 3b and supports reporting phase information from gNB to LMF. Regarding model outputs, NEC argues that LOS/NLOS indicators are unnecessary when the model output is timing/angle information, as these are derived from a 'virtual' LOS assumption. For training data, NEC proposes defining quality indicators for power information and data samples jointly, and using 'UTC time + SFN + slot index' for timestamps. To ensure consistency between training and inference, NEC supports using associated IDs and validity areas, while opposing the explicit provision of TRP location (Alternative 4) in favor of implicit methods (Alternatives 1 and 2).

NEC strongly advocates FOR sample-based measurements over path-based measurements, arguing that sample-based approach provides better standardization control and avoids vendor-specific path detection algorithms. They push FOR supporting both UE-side and network-side AI/ML model deployment with comprehensive quality indicators and consistency mechanisms. NEC is AGAINST limiting phase information usage and advocates FOR flexible implementation-dependent decisions on phase information per case. They strongly support semi-supervised learning and mixed dataset approaches to improve model robustness.