This book covers some of the available vertical handover algorithms that have been created by their respective owners, as mentioned in the references portion. We have simulated some of these algorithms under some operational environment so as to understand which type of algorithm(s) perform better for a specific scenario. The results shown in the tables are the simulated results that we have obtained. The tabulated results have been plotted in graphs for a visual representation of the performance analysis. This book also covers how an algorithm affects the performance of a device that has access to multiple types of networks at the same time.