International Journals of Advanced Information Science and Technology (IJAIST)
The interworking of mobile WiMAX and WLAN is due to its homogenous nature and complementary characteristics. In the integration of mobile WiMAX and WLAN, a tightly coupled interworking architecture and a proactive vertical handoff method is used. The proactive vertical handoff method is designed to provide always the best quality of service and this method is controlled by a vertical handoff manager. Evaluation algorithms are used to estimate the network conditions of WiMAX and WLAN based on the available bandwidth and packet delay. While checking the network conditions of WiMAX network, the uplink and downlink will be evaluated separately.