一种EPON上行接入带宽动态带宽分配算法  

Dynamic Bandwidth Allocation Algorithm for EPON Upstream Access

作　　者：李昭[1] 陈前斌[1] 

机构地区：[1]重庆邮电大学通信与信息工程学院,重庆400065

出　　处：《通信技术》2008年第5期72-74,共3页Communications Technology

基　　金：重庆市教委科学技术研究项目(KJ070513);重庆市科技攻关计划(CSTC2005AC2089)

摘　　要：以太无源光网络综合了PON技术和以太网技术的优点,以其高带宽、低成本、易使用、易升级的优良特性成为目前光接入网的优选方案。文中在IPACT算法的基础上提出了一种支持队列优先级的上行接入带宽分配算法,并构建了基于OPNET的系统仿真模型,评价了在信源到达为Pareto分布下该算法的性能。仿真表明该算法满足业务的QoS,提高了带宽的吞吐率,并保证了各业务队列带宽分配的公平性。EPON combines the advantages of PON and Ethernet. With its features of high bandwidth, low cost, easy use and update, EPON has become one of the optimal solutions for broadband access network. In this paper, a supporting queue priority allocation algorithm based on the IPCAT algorithm is proposed, and its performance based on the Pareto distribution is evaluated. This algorithm can meet the service QoS, increase the throughout of the bandwidth, and ensures the fairness of the bandwidth allocation.

关 键 词：以太无源光网络 上行接入 动态带宽分配(DBA) 

分 类 号：TN929.1[电子电信—通信与信息系统]