Question: Under what condition is the UE's (User Equipment) uplink power step adjustment verified in response to changes in SIR Target and DPCH Constant Value signaled via downlink?
Option 1: When all signaling parameters are dynamically adjusted to simulate real-world scenarios.
Option 2: By keeping other signaling parameters constant and deactivating any influence due to varying pathloss.
Option 3: During handover between different base stations with varying transmission powers.
Option 4: Only when the UE is in idle mode to conserve battery life.
Explanation: This option is correct because it ensures a controlled test environment where the only variables are the SIR Target and DPCH Constant Value, allowing for an accurate verification of the UE's response (uplink power step adjustment) without external influences (e.g., pathloss variations). This setup helps in isolating the impact of the signaling values on the UE's behavior.