Question: For a UTRA FDD UE supporting 4C-HSDPA with capability categories 31 and 32, what determines the reporting accuracy of the Channel Quality Indicator (CQI) in AWGN environments?
Option 1: Only the reporting variance
Option 2: Solely the BLER performance using the transport format indicated by the reported CQI median
Option 3: The type of UE capability category (e.g., Category 31 vs. Category 32)
Option 4: Both the reporting variance and the BLER performance using the transport format indicated by the reported CQI median
Explanation: In AWGN environments, the accuracy of Channel Quality Indicator (CQI) reports relies on two key factors: Reporting Variance, indicating how spread out reported CQI values are from actual channel quality, and BLER Performance, specifically using the transport format indicated by the median of the reported CQIs, measuring data transmission reliability.