Adaptive Vertical Handoff in Heterogeneous Wireless Networks

For seamless connectivity in Heterogeneous wireless networks (HWN), decision regarding vertical handoff is very crucial. In this paper we present an adaptive network selection algorithm UIVH (User Specific Intelligent Vertical Handoff). UIVH uses Sugeno fuzzy inference system (FIS) to decide when to perform handoff. ANFIS is used to rank different wireless networks for VHO based on set of parameters along with user preferences on a mobile device. UIVH fulfills specific needs of users and simultaneously balance overall load of HWN. Simulation results demonstrate that UIVH enhances ?quality of service (QoS) by reducing handoff latency.