首页 | 本学科首页   官方微博 | 高级检索  
     检索      

消除闲置时间的EPON动态带宽分配算法
引用本文:王汝言,刘祖奇,吴大鹏,熊余.消除闲置时间的EPON动态带宽分配算法[J].重庆邮电大学学报(自然科学版),2013,25(6):757-761.
作者姓名:王汝言  刘祖奇  吴大鹏  熊余
作者单位:重庆邮电大学 重庆市光纤通信技术重点实验室,重庆 400065;重庆邮电大学 重庆市光纤通信技术重点实验室,重庆 400065;重庆邮电大学 重庆市光纤通信技术重点实验室,重庆 400065;重庆邮电大学 重庆市光纤通信技术重点实验室,重庆 400065
基金项目:国家自然科学基金项目(60972096);重庆市科委自然科学基金(CSTC2011BA2041);重庆市教委项目(KJ110531)
摘    要:提出一种消除以太无源光网络(ethernet passive optical net, EPON)闲置时间损耗的动态带宽分配算法。算法将全网所有光网络单元(optical network unit,ONU)在逻辑上划分为彼此互无交集的2区,对2区ONU进行分离调度,当一区ONU传输数据时就为另一区ONU授权。由于实施分区调度,相邻周期不同区ONU数据的发送在时间上就可以形成衔接,从而消除了传统EPON调度中存在的闲置时间损耗,提高了系统效率。仿真结果表明,该算法能够很好地提高系统吞吐量和带宽利用率,降低网络平均时延。

关 键 词:以太无源光网络(EPON)  闲置时间  动态带宽分配算法  光网络单元(ONU)
收稿时间:2013/3/13 0:00:00
修稿时间:2013/8/20 0:00:00

Dynamic bandwidth allocation algorithm of EPON for eliminating idle time
WANG Ruyan,LIU Zuqi,WU Dapeng and XIONG Yu.Dynamic bandwidth allocation algorithm of EPON for eliminating idle time[J].Journal of Chongqing University of Posts and Telecommunications,2013,25(6):757-761.
Authors:WANG Ruyan  LIU Zuqi  WU Dapeng and XIONG Yu
Abstract:A novel dynamic bandwidth allocation algorithm for the elimination of idle time in EPON is proposed. This algorithm divides all ONUs of EPON into two different zones logically, and the different zones have their own scheduling strategies. When a zone is sending its traffic, the other zone is being granted. Because of the use of partition scheduling, the sending operations of ONUs which belong to different zones in adjacent cycles can be connected in time. So the idle time which exists in traditional scheduling of EPON is eliminated effectively, and the system efficiency is promoted. The simulation results show that the performance of uplink throughput and uplink bandwidth utilization is promoted, and the mean delay of uplink traffic is decreased.
Keywords:
本文献已被 CNKI 等数据库收录!
点击此处可从《重庆邮电大学学报(自然科学版)》浏览原始摘要信息
点击此处可从《重庆邮电大学学报(自然科学版)》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号