Question: In a 5G Next-Generation Radio Access Network (NG-RAN), what is the primary purpose of configuring a gNB-CU-UP ID at the gNB-CU-CP?
Option 1: To facilitate User Equipment (UE) handovers between different gNBs.
Option 2: To enable billing and charging for services based on user data usage.
Option 3: To uniquely identify the gNB-CU-UP within a gNB-CU-CP, at least, during procedures like E1 Setup.
Option 4: To secure the transmission of sensitive information over the E1 interface.
Explanation: The gNB-CU-UP ID provides unique identification for the gNB-CU-UP within its associated gNB-CU-CP, crucial for proper execution of E1AP procedures like E1 Setup, ensuring accurate communication direction and management within the NG-RAN architecture.