A Comprehensive study on Vertical Handover for IEEE 802.21 Wireless Networks

In the latest trends, a plethora of wireless technology becomes effectively utilizing Hetnets (Heterogeneous Networks) infrastructure when the User Equipment (UE) is moving in different networks. The major challenge in Hetnets is to attain everywhere, any time and best service. To achieve this Vertical Handover (VHO) is the one the most important handover network selecting strategy and selecting the simplest network for selected application to the user supported quality of service (QoS) parameter. In this paper, the various VHO algorithms are compared and simulations results show GRA, TOPSIS and SCS provides similar performances. FHAP and EMGRA will improve the quality of service parameters.