Review Paper: To Reduce The Handover Delay In Wimax When The Mobile Station Moves At Higher Speed.

The real potential of the broadband wireless networks lies with the mobility. WIMAX is a Wireless Interoperability for Microwave Access. It is a telecommunication technology that provides wireless the data over long distances in several ways, from point-to-point links to the full mobile cellular type access. The main consideration of Mobile Wimax is to achieve seamless handover such that there is no loss of data. In this review paper we have compared different techniques which provides no data losses when the mobile station moves at higher speed. In this we discuss the combination of adaptive forward error correction (FEC) with retransmission which provides the extra protection for handover signaling messages to enhance the probability of a successful handover, especially at a higher velocity, Media Independent Handover (MIH) standard which proposes a new neighbor discovery mechanism, considering the hierarchical view of the network information, soft handover to avoid the data losses during handover by using base station selection procedure that will optimize the soft handover such that there is no data loss; handover decision is taken quickly and thus improving overall handover performance.