The Synthesis of WiMAX and WLAN has been seen as a promising approach toward 4G. The trend in fourth-generation wireless networks is the coexistence of heterogeneous technologies. During the last few years, wireless local area networks have been widely deployed due to its low cost and high capacity. In our project, we analyzed different important issues for the interworking of Mobile WiMAX and WLAN networks. We implement a tightly coupled interworking architecture. Further, a seamless and proactive intersystem handoff scheme is designed based on the architecture with aims to provide always the best quality of service for users. Both the attainment of applications and network conditions are considered in the handoff process.
Tightly-coupled, WIMAX, WLAN, QOS, Bandwidth, Vertical Handoff, Overlay.