Pre decision based handoff in multi network environment

Abstract

Wireless networking is becoming an increasingly important and popular way of providing global information access to users on the move. One of the main challenges for seamless mobility is the availability of simple and robust vertical handoff algorithms, which allow a mobile node to roam among heterogeneous wireless networks. The next generation of mobile networks will support not just simple mobile connectivity but access to evolving smart space environments. In this paper, we propose a novel vertical handoff decision algorithm for overlay wireless networks consisting of heterogeneous wireless environment. This paper presents the proposal of optimal network selection algorithm in wireless heterogeneous environment that is based on TOPSIS method when solving the multi criteria analysis. The target network is selected using TOPSIS based decision algorithm which, in addition to usual parameters, also takes a prediction of the RSS into account © 2012 Springer-Verlag GmbH.