Abstract
Ethernet passive optical network (EPON) has been considered as an attractive solution for next-generation broadband access networks. Bandwidth distribution problem is a critical issue of EPON system. In this study, we design a fair and effective scheme with dynamic bandwidth allocation. The transmission is dominated by the interleaved control messages defined within the IEEE 802.3ah Task Force. The DBA scheme is also designed to support differentiated services and to eliminate the bandwidth wastes owing to the indivisibility of Ethernet frames. Considering the quality of service (QoS) issues of specific traffic flow, we perform some feasible improvement of the scheme we proposed. Detailed simulations are performed to verify the effectiveness of our DBA algorithm.