Power supply solutions and trends analysis for Small Cell mobile communication base station

With the rapid growth in the number of small cells, new requirements such as zero footprint and easily deployment are proposed. For different application scenarios, different power supply solutions are proposed, including local alternating current(AC) power supply, local direct current(DC) 48 V power supply, local AC and DC 48 V hybrid power supply, remote DC power supply, power over Ethernet (PoE) power supply, and so on. Moreover, the development trends of power supply solutions for small cells are pointed out, including miniaturization, modularization, high energy efficiency, green infrastructure, power sharing, intelligence and interconnection.