5G mobile networks significantly affect both the wireless side and the wireline side of the global network infrastructure. Small cells are a cost-effective solution to increase capacity of wireless networks in high-usage areas inside the coverage area of macro cell towers, and add coverage outside the coverage area of macro cell towers.
The telecom operators have already been using small cells to extend coverage and improve service quality for 3G, 4G, and LTE wireless networks. While 5G offers faster speeds, it requires more small cells.
To achieve expected performance levels for 5G networks, more small cells will be needed to eliminate network bottlenecks. These small cell deployments often utilize the millimeter wave spectrum, relying heavily on fiber cabled connections for the backhaul portion of the network.