Question: For a UL OLTD (Uplink Orthogonal Linear Transmit Diversity) UE, how is the occupied bandwidth determined when there are multiple active antenna ports?
Option 1: By averaging the occupied bandwidth measured at each active antenna port.
Option 2: By taking the highest upper boundary and the lowest lower boundary of the occupied bandwidths measured across all active antenna ports.
Option 3: By using only the measurements from the primary antenna port, as defined in the UE's configuration.
Option 4: By summing the occupied bandwidths measured at each active antenna port to derive a total system bandwidth.
Explanation: This is correct because, according to the principles guiding UL OLTD UE behavior (similar to those described for determining occupied bandwidth in multi-antenna scenarios), the overall occupied bandwidth is defined by the outermost boundaries of the measurements across all active ports. This ensures that the entire transmission spectrum is accounted for, preventing potential interference and ensuring compliance with regulatory limits.