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Mobile Information Systems
Volume 5 (2009), Issue 4, Pages 339-361

Implementation and Performance Evaluation of Two Fuzzy-Based Handover Systems for Wireless Cellular Networks

Gjergji Mino,1 Leonard Barolli,2 Fatos Xhafa,3 Arjan Durresi,4 and Akio Koyama5

1Graduate School of Engineering, Fukuoka Institute of Technology (FIT), 3-30-1 Wajiro-Higashi, Higashi-Ku, Fukuoka 811-0295, Japan
2Department of Information and Communication Engineering, Fukuoka Institute of Technology (FIT), 3-30-1 Wajiro-Higashi, Higashi-Ku, Fukuoka 811-0295, Japan
3Department of Languages and Informatics Systems, Polytechnic University of Catalonia, Jordi Girona 1-3, 08034 Barcelona, Spain
4Department of Computer and Information Science, Indiana University Purdue University Indianapolis, 723 W. Michigan Street SL 280, Indianapolis, IN 46202, USA
5Department of Informatics, Yamagata University, 4-3-16 Jonan, Yonezawa 992-8510, Yamagata, Japan

Received 29 December 2009; Accepted 29 December 2009

Copyright © 2009 Hindawi Publishing Corporation. 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.


Wireless mobile networks and devices are becoming increasingly popular to provide users the access anytime and anywhere. We are witnessing now an unprecedented demand for wireless networks to support both data and real-time multimedia traffic. The wireless mobile systems are based on cellular approach and the area is covered by cells that overlap each other. In mobile cellular systems the handover is a very important process. Many handover algorithms are proposed in the literature. However, to make a better handover and keep the QoS in wireless networks is very difficult task. For this reason, new intelligent algorithms should be implemented to deal with this problem. In this paper, we carried out a comparison study of two handover systems based on fuzzy logic. We implement two Fuzzy-Based Handover Systems (FBHS) called FBHS1 and FBHS2. The performance evaluation via simulations shows that FBHS2 has better behavior than FBHS1 and can avoid ping-pong effect in all simulation cases.