Handoff delay Optimization in IEEE 802.16e (Mobile WiMAX) using Fuzzy Expert System

Mobile WiMAX is the technology that guarantee broadband wireless access over long distance. In order to maintain mobility and constant network connectivity in mobile WiMAX, it is necessary to provide handoff. Handoff is an crucial process in wireless networks to promise continuous and effective services. But in Handoff there occurs a problem called Handoff delay. In order to optimize handoff delay in Horizontal handoff of Mobile WiMAX we use fuzzy logic in this paper. Mobile WiMAX is facing problem related to handoff delay which should be less than 50 milliseconds so in this paper we proposed a fuzzy based model which reduces the delay and gives better result. As handover delay reduces packet loss also reduces and system efficiency increases. At the end Simulation Results shows that in our proposed algorithm handoff delay reduces more than half of that valid handoff delay.