Dynamic Bandwidth Allocation Algorithm Based on Two-Phase Cycle for Efficient Channel Utilization on Ethernet PON

Won Jin Yoon, Woo Jin Jung, Tae-Jin Lee, Hyunseung Choo, Min Young Chung

Abstract: Ethernet passive optical network (EPON) is a low-cost and high speed solution to the bottleneck problem. We study previous inter-optical network unit (ONU) scheduling algorithm, interleaved polling with stop (IPS).The IPS algorithm needs an idle time period between two consecutive frame transmission cycles on uplink. In this paper, we propose a two-phase cycle dynamic bandwidth allocation (TCDBA) algorithm to increase the channel utilization on uplink through the elimination of the idle period. And, we also evaluate the performance of the proposed algorithm by simulations and confirm its effectiveness.