Limitations and Outstanding Issues

Area	Description
gNB	Cell life cycle: All cells have to start and stop at the same time. Cell config change before cell restart not supported Only homogeneous configurations supported per carrier
Layer 1	Support up to 8 DMRS ports if the allocations are contiguous in PDSCH and PUSCH Limitation on Multiple UCI detection for PUCCH (Format 0,1) Not supported: CSI-RS and RAT0 in the same slot.
FAPI	FAPI support limitations: CSI-P2 for PF3