Question: In Uplink Closed Loop Power Control for 1.28 Mcps TDD UEs, what triggers the adjustment of the UE transmitter's output power?
Option 1: One or more Transmit Power Control (TPC) commands received in the downlink
Option 2: Autonomous power adjustment based on UE's signal strength measurement
Option 3: Periodic power calibration initiated by the UE's internal timer
Option 4: Handover instruction from the serving cell to a neighboring cell
Explanation: In the context of Uplink Closed Loop Power Control for TDD User Equipment, the adjustment of the transmitter's output power is dynamically controlled by the network through one or more Transmit Power Control (TPC) commands sent via the downlink, instructing the UE to adjust its transmission power for optimized signal strength and minimized interference.