Question: In a 5G network utilizing Inter-RAT (Radio Access Technology) energy saving, what triggers the switching off of the capacity booster gNB when it's providing additional capacity to an area primarily covered by an LTE eNB?
Option 1: Handover requests from UEs (User Equipment) moving out of the gNB's coverage area.
Option 2: The gNB's cell load information indicating low usage or MnS (Management and Network Slice) producer(s)' instructions.
Option 3: Scheduled maintenance windows set by the network operator for all gNBs in a specific region.
Option 4: Direct user input from subscribers requesting reduced energy consumption in their vicinity.
Explanation: This is correct because, according to the principles of Inter-RAT energy saving in 5G networks, the decision to switch off the capacity booster gNB can be based on its own cell load information (indicating if it's underutilized) or instructions from MnS producer(s), which manage and orchestrate network resources for efficiency. This approach optimizes energy usage without compromising necessary coverage provided by the underlying LTE eNB.