Question: In a Non-Terrestrial Network (NTN) scenario, what additional information does the network provide to facilitate mobility for User Equipment (UEs) during handover?
Option 1: Target cell NTN payload assistance information
Option 2: Enhanced Power Saving Mode configuration
Option 3: Modified Quality of Service (QoS) parameters
Option 4: Updated Security Authentication Tokens
Explanation: To enable seamless mobility in Non-Terrestrial Networks (NTNs), the network must provide specific assistance to UEs to access the target NTN cell efficiently. This is particularly crucial due to the unique characteristics of NTN, such as higher latency and different signal propagation. The provision of 'target cell NTN payload assistance information' in the handover command directly supports this requirement, ensuring that UEs can successfully connect to the new cell.