Question: For a UE supporting DC-HSDPA, which statement accurately describes the applicability of CQI reporting accuracy requirements under AWGN environments?
Option 1: Applies to all UTRA FDD UEs, regardless of release or capability category
Option 2: Applies only to Release 8 and later releases for DC-HSDPA UE capability categories 15-20
Option 3: Is specific to TDD mode for all UEs supporting HSPA
Option 4: Applies to specific DC-HSDPA UE capability categories, with different release versions distinguishing between categories 21-24 and categories 25-28
Explanation: The requirements for CQI reporting accuracy under AWGN environments are specifically tailored based on the UE's DC-HSDPA capability category and the 3GPP release version, with different guidelines for categories 21-24 and categories 25-28 reflecting the evolution of standards.