A fuzzy preprocessing module for optimizing the access network selection in wireless networks

Authors:
Faisal Kaleem;Abolfazl Mehbodniya;Kang K. Yen;Fumiyuki Adachi
Affiliations:
Department of Electrical and Computer Engineering, Florida International University, Miami, FL;Department of Electrical and Communication Engineering, Graduate School of Engineering, Tohoku University, Aramaki, Sendai, Japan;Department of Electrical and Computer Engineering, Florida International University, Miami, FL;Department of Electrical and Communication Engineering, Graduate School of Engineering, Tohoku University, Aramaki, Sendai, Japan
Venue:
Advances in Fuzzy Systems - Special issue on Real-Life Applications of Fuzzy Logic
Year:
2013

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Abstract

A heterogeneous wireless network is characterized by the presence of different wireless access technologies that coexist in an overlay fashion. These wireless access technologies usually differ in terms of their operating parameters. On the other hand, Mobile Stations (MSs) in a heterogeneous wireless network are equipped with multiple interfaces to access different types of services from these wireless access technologies. The ultimate goal of these heterogeneous wireless networks is to provide global connectivity with efficient ubiquitous computing to these MSs based on the Always Best Connected (ABC) principle. This is where the need for intelligent and efficient Vertical Handoffs (VHOs) between wireless technologies in a heterogeneous environment becomes apparent. This paper presents the design and implementation of a fuzzy multicriteria based Vertical Handoff Necessity Estimation (VHONE) scheme that determines the proper time for VHO, while considering the continuity and quality of the currently utilized service, and the end-users' satisfaction.