通信学报 ›› 2013, Vol. 34 ›› Issue (11): 100-111.doi: 10.3969/j.issn.1000-436x.2013.11.012

• 学术论文 • 上一篇    下一篇

数据速率匹配的网络编码优化机制

董赞强1,2,沈苏彬2,3,毛燕琴3   

  1. 1 郑州航空工业管理学院 计算机科学与应用系,河南 郑州 450015
    2 南京邮电大学 信息网络技术研究所,江苏 南京 210003
    3 南京邮电大学 计算机学院,江苏 南京 210003
  • 出版日期:2013-11-25 发布日期:2017-06-23
  • 基金资助:
    国家重点基础研究发展计划(“973”计划)基金资助项目;国家高技术研究发展计划(“863”计划)基金资助项目;江苏省科技支撑计划基金资助项目;网络与交换技术国家重点实验室开放基金资助项目

Optimization mechanism for network-coding based on rate-match

Zan-qiang DONG1,2,Su-bin SHEN2,3,Yan-qin MAO3   

  1. 1 Department of Computer Science and Application, Zhengzhou Institute of Aeronautical Industry Management, Zhengzhou 450015, China
    2 Institute of Information Network Technology, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
    3 School of Computer Science&Technology, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
  • Online:2013-11-25 Published:2017-06-23
  • Supported by:
    The National Basic Research Program of China(973 Progra;The National High-Tech Re-search and Development Program of China(863 Program);The Science and Technology Pillar Program of Jiangsu Province;The Opening Project of State Key Laboratory of Networking and Switching Technology of China

摘要:

提出了一种基于数据速率匹配调整的网络编码优化机制OMNR,通过对关联数据速率的线性规划函数的描述及控制网络数据传送转发状态的数据票参量的引入,机制在基于网络编码的多径路由上实现了数据速率的匹配编码;基于对反映目的节点数据解码状态的数据批次解码时延的概率检测,OMNR机制实现了多径路由上数据速率的匹配调整。在OMNR机制的数据传送中,路由选择中数据往返时延和网络编码中数据传送确认信息的实时测量在较大程度上保证了编码数据传送的可靠性。理论分析和模拟实验证明了模型的有效性和可靠性。

关键词: 网络编码, 编码机会, 速率匹配, 数据传送可靠性

Abstract:

The network coding optimization mechanism OMNR(optimization mechanism for network-coding based on rate-match) was proposed. The mechanism achieves the rate m olution of the linear programming func-tion on data transport rate and the introduction of the data ticket parameter in coding-aware multi-path routing. And the dynamic adjustment on rate match process was achieved by the probability detection of the decoding delay of data gener-ation that reflects data decoding state in destination nodes. The real-time measurement on the data transport round-trip delay in routing selection and acknowledgement information in network coding guarantees the data transport reliability. Theoretic analysis and simulation show the validity and reliability of the model.

Key words: network coding, coding opportunity, rate match, data transport reliability

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