基于EPON的公平带宽分享算法及其应用  

Fair bandwidth sharing algorithm based on EPON and its application

作　　者：王莉[1,2] 肖进胜[1] 易本顺[1] 孙力[3] 

机构地区：[1]武汉大学电子信息学院,湖北武汉430072 [2]烽火通信科技股份有限公司,湖北武汉430074 [3]杭州华三通信技术有限公司,浙江杭州310053

出　　处：《光电子．激光》2011年第11期1650-1654,共5页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(41001306);湖北省自然科学基金资助项目(2009cdb328);中央高校基本科研业务费专项资金资助项目(6082003)

摘　　要：考虑光学开放接入网(optical open access network)中的公平性,将最大-最小公平算法用到双向服务等级协议(D-SLA)中,提出了一种基于以太无源光学网络(EPON)的易于实现的双向服务等级协议公平带宽分配算法。算法使用了两轮分配,通过分级管理确定首要SLA和次要SLA,对业务提供商和用户进行分级区别对待,实现同时满足双方的公平性需求。仿真结果表明,本文算法能够实现对运营商和用户的双向公平,通过公平性指数评估公平性,本文算法的公平性优于其它算法,具有合理性和实用性。For the fairness of optical open access networks, after applying the max-rain fair algorithm in the dual-service level agreement algorithm, an ethernet passive optical network （EPON）-based DSLA fair bandwidth allocation algorithm is proposed, which is easy to implement. This algorithm uses the two- round allocation. By level classification, the primary SLA and the second SLA are confirmed. And then the service providers （SPs） and users are treated in different levels to satisfy the mutual fairness request at the same time. The simulation results are given to prove that this algorithm reaches the expected goal and is feasible to satisfy the fairness request for both SPs and users. Evaluating the fairness by fair pararneter, this algorithm is superior to the others. Meanwhile,it＇s reasonable and practical in applications.

关 键 词：无源光网络(PON) 开放接入 公平带宽分享 双向服务等级协定(D-SLA) 

分 类 号：TP393.01[自动化与计算机技术—计算机应用技术]