一种带阈值的EPON动态带宽分配算法  

A dynamic bandwidth allocation algorithm with threshold for EPON

作　　者：尹广兴[1] 陈雪[1] 王琦[2] 

机构地区：[1]北京邮电大学光通信与光波技术教育部重点实验室,北京100876 [2]北京格林威尔科技发展有限公司,北京100876

出　　处：《光通信研究》2007年第6期20-22,共3页Study on Optical Communications

摘　　要：文章提出一种适用于千兆以太网无源光网络(EPON)的支持多业务的动态带宽分配(DBA)算法,该算法采用单阈值整帧上报和阈值动态调整解决了EPON中存在的时隙碎片和队头阻塞问题。同时,文章对算法中的关键参数——设定周期的大小与算法性能的关系进行了深入的研究分析,以指导算法设定周期的确定。A Dynamic Bandwidth Allocation （DBA） algorithm supporting the multiple services in Gbit/s EPON is proposed in this paper, which eliminates the unused time slots and HOL blocking in EPON by reporting the total frame amount under a single threshold and dynamically adjusting the threshold. A deepgoing study and analysis are made of the key parameter, i.e. the relationship between the assigned cycle time and the algorithm performance, for conducting the design of the assigned cycle time by the algorithm.

关 键 词：时隙碎片 队头阻塞 多业务 以太网无源光网络 动态带宽分配 

分 类 号：TN915[电子电信—通信与信息系统]