Question: In a shared SL (Sidelink) PRS (Positioning Reference Signal) resource pool, what uniquely identifies an SL PRS resource within a slot?
Option 1: SL PRS Resource ID alone
Option 2: Combination of SL PRS Resource ID and Starting Symbol Index
Option 3: Combination of SL PRS Resource ID and SL PRS Frequency Domain Allocation
Option 4: UE Tx ARP (Absolute Radio-Frequency Channel Number) ID
Explanation: In a shared resource pool, the uniqueness of an SL PRS resource within a slot is ensured by combining two identifiers: the SL PRS Resource ID and the SL PRS Frequency Domain Allocation. This combination ensures each SL PRS resource can be distinctly identified in a shared environment, facilitating precise positioning and reducing potential conflicts.