Question: In a TDD (Time Division Duplex) system, what determines the reporting accuracy of the Channel Quality Indicator (CQI) in AWGN environments for UEs supporting HSDPA?
Option 1: Only the reporting variance of the CQI.
Option 2: Solely the BLER (Block Error Rate) performance of the indicated transport format.
Option 3: The type of data streamed from the Serving Sector to the UE during measurement.
Option 4: Both the reporting variance and the BLER performance using the transport format indicated by the reported CQI median.
Explanation: The reporting accuracy of the Channel Quality Indicator (CQI) in AWGN environments for UEs supporting HSDPA is determined by two key factors: the variability in how accurately the CQI is reported (reporting variance) and the reliability of data transmission as indicated by the Block Error Rate (BLER) of the transport format suggested by the median CQI value.