Table of Contents
ISRN Communications and Networking
Volume 2012, Article ID 340720, 7 pages
Research Article

Application of Particle Swarm Optimizer on Load Distribution for Hybrid Network Selection Scheme in Heterogeneous Wireless Networks

1Faculty of Engineering & Technology, Multimedia University, Jalan Ayer Keroh Lama, 75450 Melaka, Malaysia
2Faculty of Engineering, Multimedia University, 63000 Cyberjaya, Malaysia
3MIMOS Berhad, Technology Park Malaysia, 71700 Kuala Lumpur, Malaysia

Received 23 March 2012; Accepted 19 June 2012

Academic Editors: W.-H. Fang, A. K. Somani, and C.-W. Yi

Copyright © 2012 Yoke Chek Yee et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Mobile terminal with multiradios is getting common nowadays with the presence of heterogeneous wireless networks such as 3G, WiMAX, and WiFi. That Network selection mechanism plays an important role in ensuring mobile terminals are always connected to the most suitable network. In this paper, we introduce and evaluate the performance of load distribution model to facilitate better network selection. We focus on the optimization of network resource utilization using the particle swarm optimizer (PSO) with the objective to distribute the system load according to the various conditions of the heterogeneous networks in order to achieve minimum system cost. Simulation results showed that the proposed approach outperformed the conventional iterative algorithm by a cost improvement of 7.24% for network size of 1000 mobile terminals using 10 particles.