In this paper, we propose a novel early dynamic bandwidth allocation (E-DBA) mechanism incorporated with a prediction-based fair excessive bandwidth reallocation (PFEBR) scheme in EPON. The E-DBA mechanism not only can reduce the idle period in the traditional DBA mechanism, but also provide more accurate prediction for the PFEBR scheme to ensure the fairness of all ONUs and improve the overall system performance. The proposed prediction model for different traffic classes is based on the variation of traffic for all ONUs in EPON. The simulation results show that the proposed E-DBA mechanism with PFEBR scheme can improve the system performance of well-known DBA algorithms.
