Question: Under what condition can a UE infer the channel for a PDSCH symbol from a DM-RS symbol on the same antenna port in the downlink?
Option 1: If the symbols are in the same slot but can be in different Physical Resource Groups (PRGs).
Option 2: If the symbols are in different slots but within the scheduled PDSCH resources.
Option 3: If the symbols are within the same resource as the scheduled PDSCH, in the same slot, and in the same PRG.
Option 4: If the UE assumes quasi-co-location for any QCL type between the two antenna ports.
Explanation: This is correct because inference about the channel over which a PDSCH symbol is conveyed from a DM-RS symbol on the same antenna port requires being within the same resource as the scheduled PDSCH, in the same slot, and in the same Physical Resource Group (PRG), ensuring accurate channel estimation for effective downlink transmission.