Handover Schemes in Heterogeneous LTE Network

Abstract

An infrastructure build in the LTE platform which is reliable to challenge the commercial and noncommercial
IT development communities of data streams in high dimensional data cluster modeling. This
project is mainly focuses that to satisfy rapidly increasing data rates at hotspots and enhancing coverage in
buildings, small cells, such as femtocells, picocells, and microcells, are deployed in LTE-A. Picocells are
typically installed at hotspots and overlay with the macrocell to improve energy efficiency and data rates. In
macro-pico HetNets, the handover issue is more important than that in macrocell networks. On one hand, more
frequent handovers are triggered because the coverage range of a picocell is small. On the other hand, some
schemes, such as load balancing, aimed at improving network performance, will also cause frequent handover
in macro-pico HetNets. Therefore, handover has a significant impact on the performance of macro-pico
HetNets. In this article, we first survey the state-of-the-art handover techniques that are aimed at keeping
ongoing connections uninterrupted or ensuring the quality of service of mobile users. Then we introduce loadbalance-
related handover schemes. Moreover, an energy-efficient handover scheme is presented. At last, we
point out interesting research issues on handover schemes in macro-pico HetNets.