Network Selection Equilibrium in Heterogeneous Wireless Environment

B M Bakmaz

doi:10.5755/j01.eee.19.4.4058

Abstract

Service delivery in a heterogeneous wireless environment requires the selection of an optimal access network. In order that users could be always connected through the optimal available network, it is necessary to develop an adequate technique for its selection. This article presents the proposal of suitable network selection technique for heterogeneous wireless environment that is based on TOPSIS method when solving the multiple criteria decision making problems. The radio access networks in this model represent the alternatives, while the network parameters (network conditions, QoS level, security level, cost of service) are considered as the triggering criteria for determining the suitable network. Through simulation studies, we show the potential of entropy based TOPSIS model in optimal network selection process.DOI: http://dx.doi.org/10.5755/j01.eee.19.4.4058

Highlights

An important characteristic of future generation wireless systems is the compositeness of communication model
The proposed network selection mechanism relies on the combination of Analytic Hierarchy Process (AHP) and Grey Relational Analysis (GRA) of the multiple criteria decision making
Current proposed network selection techniques in heterogeneous environment require more significant challenges to be overcome before they can successfully deployed in real systems

Summary

INTRODUCTION

An important characteristic of future generation wireless systems is the compositeness of communication model. The combination of different wireless technologies and architectures is used for providing a large variety of multimedia services for users to access from "any place and any time". Two WiFi networks based on same standard can differ in terms of security and QoS as well as the cost of service In such heterogeneous environment, handover management is the essential issue that supports the seamless mobility from one system to another. Third Generation Partnership Project (3GPP) is defining an Access Network Discovery and Selection Function (ANDSF) [4] to assist mobile terminals in vertical handover between 3GPP and non-3GPP networks, covering both automated and manual selection as well as operator and user management. The last section is devoted to the conclusions which summarize the contribution achieved in the paper

BRIEF OVERVIEW OF RELATED WORKS

NETWORK SELECTION EQUILIBRIUM TECHNIQUE

TESTING MODEL RESULTS

POSSIBILITIES OF MODEL IMPLEMENTATION

Findings

CONCLUSIONS