Question: In a 5G NG-RAN architecture, when a Mobile Integrated Access Backhaul (IAB) node with Mounting Type (MT) detects backhaul Radio Link Failure (RLF), what is the primary objective of the inter-CU backhaul RLF recovery procedure it can initiate?
Option 1: To switch to a different User Equipment (UE) for improved coverage
Option 2: To perform a software update on the IAB node to prevent future RLFs
Option 3: To reconnect to another parent node under a different IAB-donor Central Unit (CU) for backhaul recovery
Option 4: To temporarily disable backhaul services to conserve energy
Explanation: In the context of 5G NG-RAN and IAB architecture, when a Mobile IAB-MT encounters backhaul RLF, the key goal of initiating an inter-CU backhaul RLF recovery procedure is to re-establish a stable backhaul connection. This is achieved by reconnecting to another parent node that is associated with a different IAB-donor Central Unit (CU), thereby ensuring continuity of service and network reliability.