Question: In a UTRA FDD network, what is the primary objective of downlink power control from the UE receiver's perspective?
Option 1: To maximize downlink transmission power for broader coverage
Option 2: To maintain a constant link quality regardless of network settings
Option 3: To prioritize DCCH over DTCH for outer loop link adaptation
Option 4: To achieve the required link quality set by the network using minimal downlink power
Explanation: The goal of downlink power control is for the UE receiver to converge to the required link quality set by the network while using as low power as possible in downlink, optimizing energy efficiency while maintaining necessary communication quality.