Question: For a UTRA FDD UE supporting 4C-HSDPA with capability categories 29 and 30, what determines the reporting accuracy of the Channel Quality Indicator (CQI) in AWGN environments?
Option 1: Only the reporting variance of the CQI.
Option 2: Both the reporting variance of the CQI and the Block Error Rate (BLER) performance indicated by the reported CQI median.
Option 3: The type of UE capability category alone (e.g., Category 29 vs. Category 30).
Option 4: The release version of the 3GPP specification implemented (e.g., Release 10 vs. later releases).
Explanation: In AWGN environments, CQI report accuracy is crucial for efficient link adaptation. This accuracy is influenced by two key factors: Reporting Variance of CQI, reflecting consistent reporting under stable conditions, and BLER Performance Indicated by Reported CQI Median, showing how well the reported CQI predicts actual block error rates, ensuring optimal data throughput and reliability, particularly for advanced UE categories like 29 and 30 supporting 4C-HSDPA.