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PDSCH AggregationFactor is a mechanism that one DCI can schedule multiple consecutive downlink slots for PDSCH. The number of the consecutive slots can be 2 or 4 or 8. The number of slots can be determined by the RRC parameter pdsch-AggregationFactor.
When this IE is configured, the number of allocated symbol (SLIV) for all the consecutive slots are same as the first slot.
The RV_id (Redundancy Version) for each slot varies depending on following table.
< 38.214 - Table 18.104.22.168-2: Applied redundancy version when aggregationFactorDL > 1 >
This is an optional configuration and it is not guaranteed that all the UE support this capability. If a UE support this capability, it should inform it to Network via the IE : pdsch-RepetitionMultiSlots in Phy-ParametersCommon of UE CapabilityInformation.