A green handover protocol in two-tier OFDMA macrocell-femtocell networks

In this paper, we develop a green handover protocol in two-tier OFDMA macrocell-femtocell networks. To improve the energy efficiency of femtocell base station, the proposed green handover protocol can intelligently switch on its radio communication and associated processing, or called as “wake up” from the idle mode, if the remainder data of a mobile host can be completely uploaded through the “will-be-wake-up” femtocell base station. Finally, the performance simulation illustrates that the proposed protocol can provide a more power-saving result compared with the existing energy-saving handover protocols. Keyword-Green handover; energy-saving; femtocell; OFDMA; two-tier cellular networks.