Intelligent vertical handover decision model to improve QoS

In order to sustain connection and service in heterogeneous wireless environment, vertical handover is necessary. Now-a-days research focus is to optimize vertical handover so that optimized and application specific (QoS based) handover can be made possible. In this paper, an intelligent approach to vertical handover is proposed. The fuzzy logic based decision making is used to select among the available networks. Triggers and events are used to generate the input which is sent to fuzzy expert system. In this way, the intelligent selection of networks can optimize vertical handover and improve QoS of real-time application running on mobile device which is roaming around heterogeneous wireless networks.