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Development of a Novel Mobile Terminal Software Architecture supporting Energy Efficient Vertical Handover  

Park, Seung-Min (ETRI)
Kim, Won-Tae (ETRI)
Kim, Dae-Young (Chungnam National Univ.)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.46, no.1, 2009 , pp. 10-23 More about this Journal
Abstract
In this paper we propose a novel mobile terminal software architecture supporting energy efficient handover operation in heterogeneous networks. Since the legacy proposals for L3 handover are mostly dependent on IETF Mobile IP which has some problems in movement detection mechanism and no considerations on nested heterogeneous network environment as a result they make serious overload on networks and terminals by performing unnecessary handover in such network environments. The proposed architecture has terminal-oriented network selection and switching architecture where a mobile terminal periodically monitors network status and selects the optimum network, and reduces energy consumption by making L3 handover of Mobile IP to the finally selected network. The network selection method first picks up some candidate networks by considering a terminal speed and power consumption estimation, and determines the final target handover network among the candidates after evaluating multiple factors including QoS required by a terminal, network status, user preference and terminal battery status. Finally we verify the functionality and performance of the energy efficient vertical handover architecture by means of adopting it into a real mobile terminal.
Keywords
multi-homed; multimodal; vertical handover; ubiquitous communications; mobile terminal;
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