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Asian Journal of Applied Sciences
Year: 2009  |  Volume: 2  |  Issue: 6  |  Page No.: 511 - 520

VHO Strategy for QoS-Provisioning in the WiMAX/WLAN Interworking System

Omar M. Eshanta, M. Ismail, K. Jumari and P. Yahaya    

Abstract: In IEEE 802.16, one of the main features is the QoS-Provisioning. The limited bandwidth and the increasing of the high data rate service users will impact the performance of the system. In this study, we propose a VHO algorithm that can support the provisioning of QoS in mobile WiMAX networks by handing over some Best-Effort (BE) low-speed WiMAX Subscriber Station (SS) to an overlaid WLAN network subject to the QoS guarantee for the SS. Our simulation results show that by utilizing the overlaid WLAN hotspots we can gain some free band for the new SS requests. According to our simulation results a significant improvement in the capacity and the probability of blocking (PB) in WiMAX network was achieved.

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