Fading Effects on Vertical Handover

This study has analyzed the effect of shadow fading and used extensive geometric and probability analysis in modeling the coverage area of a WLAN cell. Thus, presents a realistic and novel model with an attempt to ensure optimal handover as a mobile node (MN) traverses a heterogeneous wireless environment. In the proposed HNE approach, the dwell time is being estimated along with the threshold values to ensure an optimal handover decision by the MN, while the probability of unnecessary handover and handover failure are kept within tolerable bounds. Simulations have been carried out to show the behavior of the proposed HNE and HTCE models considering five performance attributes (Cost, Delay, Data rates, Dwell Time, QoS) Results were validated by comparing the proposed models with existing works.