Interdependency analysis of angle of UE movement and inter-site-distance on configuration of handover control parameter in LTE-A HetNets

Abstract

Adoption of traditional Handover (HO) procedure in LTE-A HetNet degrades HO performance when compared to the Homogeneous Network. To overcome this, triggering of HO procedure need to be executed in time which is achieved by properly configuring the HO control parameters taking into account the Environmental, Network and User Equipment (UE) characteristics. From the literature survey made, it is found that combined impact of all the control parameters on HO procedure have not been investigated. Hence in this work, an attempt has been made to investigate the combined impact of the control parameters such as Hysteresis Margin, A3Offset, Cell-Specific Offsets and Time-To-Trigger involved in HetNet environment of Macro-Pico deployment. The dependency of these control parameter configuration on HO performance with respect to Inter-Site Distance (ISD) between the base stations, Offloading benefits and UEs with random movement are investigated.