Question: What is the primary purpose of an eNB (Evolved Node B) informing its neighboring eNBs about downlink power restrictions on a per resource block or per subframe basis?
Option 1: To synchronize cell handover procedures with neighboring cells.
Option 2: To facilitate uplink power control adjustments in User Equipment (UE).
Option 3: To enable coordinated multipoint transmission (CoMP) techniques across cells.
Option 4: To assist neighboring eNBs in interference-aware scheduling for downlink transmissions.
Explanation: Informing neighboring eNBs about downlink power restrictions on a granular level (per resource block or per subframe) is crucial for minimizing interference between cells. This information enables neighboring eNBs to make informed decisions during their scheduling processes, thereby reducing the impact of inter-cell interference on downlink transmissions and improving overall network performance. This aligns with the principles of interference-aware scheduling, which aims to optimize resource allocation based on interference conditions.