Adaptive Hysteresis Using Mobility Correlation for Fast Handover

The value of hysteresis has a significant effect on the handover performance measured in terms of the handover initiation delay and the number of handovers. To determine the hysteresis value effectively, a mobility correlation among users is utilized. In this letter, a grouping algorithm and an adaptive hysteresis algorithm based on the mobility correlation are proposed. It is shown that the proposed algorithms are very efficient in reducing both the handover initiation delay and the number of handovers.