Question: In NG-RAN, what does the SL-AoA positioning method primarily utilize to determine the direction between a pair of User Equipment (UEs)?
Option 1: Round-Trip Time (RTT) measurements from uplink transmissions
Option 2: Sidelink (SL) angle of arrival measurements performed by a UE
Option 3: Cell ID information from serving and neighboring base stations
Option 4: Downlink signal strength from multiple gNBs
Explanation: The SL-AoA positioning method relies on the angle of arrival measurements of sidelink signals, taken by a UE, to determine the direction between two UEs relative to a reference direction, highlighting its dependence on direct UE-to-UE signal analysis.