A Fast Handover Scheme for Wimax System

In this paper, a new fast handover scheme for Wimax system is proposed. An MS get a handover code and a ranging opportunity allocated by the target BS before the MS executes the handover process. Consequently, it reduces the handover delay and the MS can quickly implement network reentry during the handover process. Meanwhile, the new fast handover scheme can maintain stable data transmission. Numerical results show that the new handover scheme for Wimax system outperforms the conventional handover scheme with respect to the handover delay and system throughput.