A QoS-ensured Dynamic Bandwidth Allocation Algorithm in 10G-EPON Systems

With the development of HD IPTV,online games and so on,the users have increasing for the demands for the bandwidth and 10G-EPON technology arises at the historic moment.As the traditional EPON system,dynamic bandwidth allocation for 10G-EPON system is still a very critical problem.The choice of bandwidth allocation mode plays an important role in avoiding transmission conflicts,improving system bandwidth utilization and ensuring QoS(quality of service).In this paper,a modified dynamic bandwidth allocation algorithm is proposed,which focuses on ensuring the high-priority business service,and to a certain extent,could reflect the fairness between ONUs with different levels,and also improve the upstream bandwidth utilization.