Question: In an Evolved Universal Terrestrial Radio Access Network (E-UTRAN), which entity is primarily responsible for executing Load Balancing (LB) algorithms to manage uneven traffic distribution across multiple cells?
Option 1: Mobility Management Entity (MME)
Option 2: Serving Gateway (S-GW)
Option 3: Packet Data Network Gateway (P-GW)
Option 4: Evolved Node B (eNB)
Explanation: Load Balancing in E-UTRAN is crucial for optimizing resource utilization and maintaining Quality of Service (QoS). The eNB, being the base station in LTE networks, has direct oversight of cell load conditions and can promptly execute handover or cell reselection decisions based on LB algorithms, making it the most suitable entity for this function. This ensures efficient traffic redistribution from highly loaded cells to underutilized ones, thereby enhancing network performance.