Energy saving mechanism for future HetNets

Green 5G enabling technologies: an overview

“…Given that the energy consumption of RAN accounts for more than half of the overall energy consumption of mobile networks, many works [13][14][15][16][17] have been done to reduce energy consumption of RAN through dynamic cell operation. The key idea behind is to switch off or deactivate as much as the radio resource like antenna, carrier and beam once the user demand is decreased or disappeared.…”

“…The cell zooming reduces power consumption by adjusting the cell size according to traffic load, quality of service (QoS) requirements and the channel conditions. In [13], Ameur et al studied the energy consumption of heterogeneous networks (HetNet) by using a sleep/wake up scheme, aiming at adapting network capacity to dynamic traffic load. They find that an optimal solution to achieve the maximise energy gain by optimal network configuration is NP-complete and propose a solution based on estimating the network state by queuing networks.…”