Question: In the context of HSDPA (High-Speed Downlink Packet Access) testing, what is the primary purpose of steps 1-3 being repeated after receiving a HS-SCCH order activating UL_CLTD (Uplink Closed Loop Transmit Diversity) activation state 3 in a UE (User Equipment)?
Option 1: To assess the UE's ability to adapt transmission power under different diversity settings, ensuring optimal signal strength and minimizing interference.
Option 2: To evaluate the UE's throughput performance in various activation states without impacting network capacity.
Option 3: Solely for measuring the UE's response time to HS-SCCH orders, independent of transmission power adjustments.
Option 4: Exclusively to test the UE's capability to handle simultaneous voice and data transmissions under CLTD.
Explanation: Repeating steps 1-3 after activating UL_CLTD state 3 allows for the measurement of the UE's mean power at the active carrier under the new diversity setting. This assesses the UE's ability to adapt its transmission power, which is crucial for maintaining optimal signal strength and minimizing interference in the network when using closed-loop transmit diversity. This directly impacts the quality of service (QoS) and overall network performance.