A Performance Evaluation of Handoff Method between WLAN and cdma2000 1x Ev-Do System

In this paper, we suggest the data handoff method combine with Mobile IP and layer 2 triggering between WLAN and cdma2000 1x Ev-Do cellular network. The WLAN network has small cell coverage, but CDMA network covered with wide area. Then, the coverage of public WLAN network is overlapped with that of cellular network. In this network environment, mobile user should be requiring handoff service between WLAN and cellular network to use high quality and convenience service. We propose the inter system handoff method based on measuring the power of WLAN signal in multi-access network environments, and analyze the performance of handoff method in terms of delay and interruption time using test-bed system.