以太无源光网络动态带宽分配算法研究  

On the dynamic bandwidth allocation algorithm in ethernet passive optical networks

作　　者：刘亚恒[1] 巩稼民[2] 

机构地区：[1]西安邮电学院通信与信息工程学院,陕西西安710121 [2]西安邮电学院电子工程学院,陕西西安710121

出　　处：《西安邮电学院学报》2011年第6期42-45,共4页Journal of Xi'an Institute of Posts and Telecommunications

摘　　要：为了有效利用以太无源光网络中的上行带宽,提高网络的性能,介绍基于授权/请求并适应循环时间的交织轮询算法、基于服务质量的动态带宽分配算法和基于服务质量的预测值算法,并从业务服务质量等方面对它们进行比较研究。通过OPNET对各算法性能进行仿真,结果表明:基于服务质量的预测值算法优于其他两种算法,可提高系统上行带宽利用率。The Ethernet passive optical network is focused on.To take advantage of its uplink bandwidths,and make full use of its functions,three algorithms are introduced.They are the algorithm about interleaved polling with adaptive cycle time,the algorithm based on the service quality of the dynamic bandwidth allocation and the algorithm based on service quality and prediction.In term of the business service quality,these algorithms are compared with each others.With the help of OPNET,their performances are simulated.The experimental results show that,the algorithm based on service quality and prediction is superior to the others,it can improve uplink bandwidths utilization ratio of the system.

关 键 词：以太无源光网络 多点控制协议 动态带宽分配 服务质量 

分 类 号：TN915.6[电子电信—通信与信息系统]