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清华大学学报(自然科学版)  2015, Vol. 55 Issue (11): 1235-1240    DOI: 10.16511/j.cnki.qhdxxb.2015.21.014
  电子工程 本期目录 | 过刊浏览 | 高级检索 |
面向动态业务的光网络信息失真机理及其影响分析
刘海蛟1,2, 华楠1,2, 李艳和1,2, 郑小平1,2
1. 清华大学电子工程系, 北京, 100084;
2. 清华信息科学技术国家实验室, 北京 100084
Mechanism of information distortion and its impact on optical networks for dynamic traffics
LIU Haijiao1,2, HUA Nan1,2, LI Yanhe1,2, ZHENG Xiaoping1,2
1. Department of Electronic Engineering, Tsinghua University, Beijing 100084, China;
2. Tsinghua National Laboratory for Information Science and Technology, Beijing 100084, China
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摘要 为了有效抑制分布式光网络动态特性对网络性能的影响,提升频谱资源利用率,该文基于分布式网络噪声(DNN)的概念和数学模型,提出了一种定量分析动态特性影响网络性能的方法。该方法首先分析了信息失真产生的机理;然后针对业务到达过程及网络服务机制的统计特性,建立了动态特性引发信令阻塞的模型,揭示了信息失真影响网络性能的规律。研究结果表明:业务原始到达率越高,网络信息失真程度越高且信令阻塞率越大。实验结果与理论模型高度匹配,验证了模型的有效性。
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关键词 动态业务信息失真分布式网络噪声(DNN)信令阻塞    
Abstract:The impact of the network dynamics on network performance was analyzed to develop a distributed network noise(DNN) concept to efficiently suppress the effects of the network dynamics and increase the spectrum utilization. The analysis analyzes the mechanism of how information distortion influences the network performance. An analytical signaling blocking model is developed based on the DNN to indicate the influence of information distortion. The results show that the information distortion as well as the blocking probability increase with increasing origin arrival rate. The estimates derived from the analytical model agree well with experimental results.
Key wordsdynamic traffic    information distortion    distributed network noise(DNN)    signaling blocking
收稿日期: 2015-05-14      出版日期: 2015-12-01
ZTFLH:  TN929.11  
通讯作者: 郑小平,教授,E-mail:xpzheng@tsinghua.edu.cn     E-mail: xpzheng@tsinghua.edu.cn
引用本文:   
刘海蛟, 华楠, 李艳和, 郑小平. 面向动态业务的光网络信息失真机理及其影响分析[J]. 清华大学学报(自然科学版), 2015, 55(11): 1235-1240.
LIU Haijiao, HUA Nan, LI Yanhe, ZHENG Xiaoping. Mechanism of information distortion and its impact on optical networks for dynamic traffics. Journal of Tsinghua University(Science and Technology), 2015, 55(11): 1235-1240.
链接本文:  
http://jst.tsinghuajournals.com/CN/10.16511/j.cnki.qhdxxb.2015.21.014  或          http://jst.tsinghuajournals.com/CN/Y2015/V55/I11/1235
  图1 信息失真引发信令阻塞示意图
  图2 状态转移示意图
  图3 大规模分布式光网络实验平台
  图4 NSFNET拓扑
  图5 DNN 随业务原始到达率的变化
  图6 信令阻塞
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