摘要
提出了一个基于效用的EPON公平性指标算法.通过建立一个基于ACK特征包的ACK压缩和解压缩机制,消除了上游ONU的ACK对下游ONU下行数据流的影响,在保证ONU之间的公平性的同时,提高了带宽的使用效率.通过建立一个效用分类器,在维护了优先级机制扩展性的前提下,提高了并发的同业务类业务流之间的公平性.通过建立一个时延公平调度机制,在保证带宽的使用率前提下,保证了ONU的业务类之间的时延公平性.仿真结果很好验证了本机制的优点.
We put forward a utility algorithm on fairness metrics for EPON. By building an ACK compression and decompression mechanism based on ACK-specialized packet, we reduce the ACK interference of upstream ONU on downstream ones, the fairness between ONUs is not only ensured, but also the bandwidth efficiency is increased. By presenting a utility classifier, we improve the fairness among parallel user traffics while keeping the expansibility of priority mechanism. By introducing a delay-fairness scheduling mechanism, we reduce the delay unfairness among a ONU priorities when the bandwidth is not reduced.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2008年第11期2256-2261,共6页
Acta Electronica Sinica
基金
国家973重点基础研究发展规划(No.2007CB307101)
国家863高技术研究发展计划(No.2007AA01Z203)
关键词
以太无源光网络
传输控制协议
公平性
业务水平协议
ethemet-based passive optical network （EPON）
transport control protocol（TCP）
fairness
service level agreement（SLA）
