An adaptive call admission control scheme with load balancing for QoS enhancement in converged UMTS/WLAN

Authors:
R. Shankar;P. Dananjayan
Affiliations:
Department of ECE at Sri Manakula Vinayagar Engineering College, Pondicherry, India;Department of ECE, Pondicherry Engineering College, India and Asian Institute of Technology, Thailand
Venue:
CIT'11 Proceedings of the 5th WSEAS international conference on Communications and information technology
Year:
2011

Citing 5
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Abstract

Convergence of third generation (3G) cellular networks such as universal mobile telecommunications system (UMTS) and wireless local area network (WLAN) has numerous advantages, which have motivated rigorous research efforts to combine UMTS and WLAN systems. Radio interface in converged UMTS/WLAN system is flexible in resource management. This paper analyses the performance of wideband power based (WPB) and the throughput based (TB) call admission control scheme that utilises the flexibility of radio interface and proposes a new adaptive call admission control (ACAC) scheme with load balancing for enhancing quality of service (QoS) in the converged network. Above schemes are applied to converged UMTS WLAN simulated using OPNET and different QoS parameters are observed. Simulation results show that the ACAC with load balancing enhances QoS in converged UMTS/WLAN environment.