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VERTICAL HANDOFF DECISION SCHEMES IN HETEROGENEOUS WIRELESS NETWORK USING MADM

K.Savitha and Dr.C.Chandrasekar

The most challenged one in Fourth generation wireless networks is service continuity in heterogeneous wireless access technology. For continuous service, HANDOFF technique is used as the main key to switch from one network to another network. Vertical handoff with processing delay was used for service continuity. In this paper, we compared the three schemes, centralized vertical handoff decision (C-VHD), Distributed vertical handoff decision (D-VHD) and Trusted Distributed vertical handoff decision (T-DVHD). The result of the simulation shows that T-DVHD is the best schemes to provide seamless vertical handoff in terms of processing delay, end-end delay and throughput.