OPTIMIZATION OF VERTICAL HANDOVER USING A DIRECTION BASED MULTIPARAMETRIC APPROACH : A REVIEW

WiMAX and Wi - Fi are the major 3G technology to perform high speed communication over the network. It is one of the fastest growing mobile technology in which different of data is transferred over the network. Over the past few years, rapid advances in wireless broadband networks have been driving the evolution of communication and network technologies towards next generation o mnipresent computing environments. If a mobile station velocity is high and its movement pattern is irregular, unnecessary handovers likely occur more frequently, and then a seamless handover algorithm between heterogeneous wireless networks is required. T his paper describes two techniques Wi - Fi (Wireless Fidelity) & WiMAX(Worldwide Interoperability for Microwave Access) used in wireless communication along with their comparison and how vertical handover takes place between these two heterogeneous technique s. Here the heterogeneity is defined in terms of WiMAX and Wi - Fi Networks. The aim of this paper is to study these two techniques and describe the basic vertical handover procedure