Question: In a UMTS FDD network, when a User Equipment (UE) is in soft handover, receiving multiple Transmit Power Control (TPC) commands from different cells in the active set within the same slot, what should the UE do with these commands?
Option 1: The UE should prioritize and only apply the TPC command from the strongest received cell signal.
Option 2: The UE needs to combine all received TPC commands to determine the required uplink power step.
Option 3: The UE should discard all but the most recent TPC command received across all cells in the active set.
Option 4: The UE applies each TPC command from each cell independently, adjusting power separately for each.
Explanation: In a soft handover scenario, the UE is simultaneously connected to multiple base stations (cells). Receiving multiple TPC commands in the same slot requires the UE to combine them to accurately adjust its uplink transmission power. This ensures optimal network performance and minimizes interference by managing the UE's uplink signal strength across all connected cells.