Handoff decision algorithm based on prediction in SAE network

Accoording to the all-IP mobility network based on the system architecture evolution( SAE) in 3GPP Release 8,visioned the next generation wireless network as a heterogeneous wireless access networks. This paper proposed a handoff decision algorithm assisted by the prediction. The previous algorithms had not cosidered the negative effect caused by the terminal’ s high speed. So proposed a pre-decision method by using the max-velocity. And applyed the Kalman prediction method combined with the forward signal strength to pedicted the next time’s strength accuracy. The mobile terminal can trigger the handoff appropriately. Simulaton results of the algorithm show that it provides a highly performance of the handoff,and it is benefit for the communcation system efficiency’s improvement.