Network Selection Algorithm for Heterogeneous Wireless Environment

Service delivery in a heterogeneous wireless environment requires the selection of an optimal radio access network. In order that users could be always connected through the optimal network, it is necessary to develop an adequate model for its selection. This paper presents the proposal of optimal network selection algorithm in wireless heterogeneous environment that is based on TOPSIS method when solving the multicriteria analysis. The wireless networks in this model represent the alternatives, while the network parameters (available bandwidth, quality of service level, security level, data transfer cost) are considered as the criteria for determining the optimal network.