Question: In DL-AoD (Downlink Angle of Departure) positioning, what is a prerequisite for a User Equipment (UE) to estimate its position based on measurements from multiple New Radio (NR) Transmission Reception Points (TRPs)?
Option 1: Synchronization with at least one LTE cell
Option 2: Knowledge of the spatial information of downlink radio signals and geographical coordinates of the TRPs
Option 3: Establishment of a dedicated bearer for positioning data
Option 4: Completion of a handover procedure from another gNB
Explanation: Accurate DL-AoD positioning relies on understanding the spatial characteristics (e.g., angle of departure) of the downlink signals and knowing where these signals originate geographically (i.e., the TRPs' locations). This information is crucial for triangulating or multilaterating the UE's position. While measurement gaps might be necessary for the UE to perform these measurements (as facilitated by options related to gNB procedures), and other technical setups might support the process, the core prerequisite for estimating the UE's location in DL-AoD positioning is the knowledge of spatial signal information and TRP coordinates.