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Mobile Information Systems
Volume 2016, Article ID 4218979, 9 pages
http://dx.doi.org/10.1155/2016/4218979
Research Article

Probabilistic Path and Data Capacity Based Handover Decision for Hierarchical Macro- and Femtocell Networks

School of Information and Communication Engineering, Inha University, 253 Yonghyun-dong, Nam-gu, Incheon 402-751, Republic of Korea

Received 17 March 2016; Accepted 17 May 2016

Academic Editor: Juan C. Cano

Copyright © 2016 Jae-Wook Lee and Sang-Jo Yoo. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Femtocells are considered a technology to improve performance of a network by increasing network coverage and communication capacity at a relatively low cost. However, if there are a lot of femtocells in a macrocell, the number of handovers greatly increases, and unnecessary handovers can occur from the mobile station temporarily passing through a femtocell. In this paper, we propose a method that probabilistically estimates the path in a femtocell and makes a handover decision based on the available data capacity of a mobile station on the estimated path. Simulation results show that the proposed method effectively reduces the number of unnecessary handovers while improving the data rate and capacity.