SON Handover Algorithm for Green LTE-A/5G HetNets
Sonia Ben Rejeb
Published online: 18 March 2017
Ó Springer Science+Business Media New York 2017
Abstract Fourth generation networks and beyond (5G) have recently emerged to satisfy
the increasing demand for high data bit rates. Cost-effective means such as small cells have
been designed in 3GPP LTE-Advanced standard since the Release 10 to signiﬁcantly
enhance coverage and capacity. The deployment of small cells over Macrocells layer
introduces a new type of networks called Heterogeneous Networks (HetNets). Another cost
saving concept is Self-Organizing Networks (SON) which aims at minimizing human
efforts in management and operating processes. The last emerging trend for cost effec-
tiveness is to save energy especially in access networks by turning off the unused stations.
In this context, we propose a new green procedure that aims at minimizing the energy
consumption in LTE-Advanced/5G access networks using Handover self-optimization
SON function. We also introduce a new mathematical model for energy cost calculations.
Performance evaluation results show that our proposed algorithm considerably reduces the
energy consumption in the network for all scenarios related to user speed.
Keywords LTE-A/5G Á Green HetNets Á SON Á Self-optimization Á Handover Á
& Maissa Boujelben
Sonia Ben Rejeb
MEDIATRON Laboratory, Higher School of Communications (Sup’Com), Ariana, Tunisia
Esprit School of Engineering, Tunis, Tunisia
Wireless Pers Commun (2017) 95:4561–4577