Question: What does the Traffic Load Reduction Indication Information Element (IE) primarily indicate in an Evolved Universal Terrestrial Radio Access Network (E-UTRAN)?
Option 1: The percentage of specific traffic types to be rejected relative to the instantaneous incoming rate at the eNodeB (eNB), as indicated by the Overload Action IE.
Option 2: The absolute volume of data to be offloaded from the eNB to reduce network congestion.
Option 3: A fixed threshold for triggering overload protection mechanisms in the E-UTRAN.
Option 4: The ratio of uplink to downlink traffic for load balancing between cells.
Explanation: This is correct because the Traffic Load Reduction Indication IE signals the proportion (percentage) of particular types of traffic to be rejected, relative to the current incoming rate at the eNB, guided by the Overload Action IE parameters to manage network overload.