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Analysis of optimal RTO of DTN protocol in deep-space communications.

机译:深空通信中DTN协议的最佳RTO分析。

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摘要

The National Aeronautics and Space Administration (NASA) has proposed an end to end networking architecture named Delay/Disruption Tolerant Network (DTN) which is for reliable data delivery in deep-space vehicle communication. Bundle Protocol (BP), the main protocol of DTN, uses a store-and-forward mechanism and custody transfer option for transmission reliability. There has been some work in performance evaluation of DTN's BP and Retransmission Time-Out (RTO) timer setting for the use of BP for file transmission over a relay-based deep-space vehicle communication infrastructure characterized by long signal propagation delay, lengthy disruption, lossy data links and asymmetric channel rates which indicate that RTO timer is set equal or greater than Round-Trip Time (RTT). Unlike this, there is a possible efficient use of the deep-space data channel bandwidth: RTO is set to be less than RTT and that leads to maximum transmission performance of BP for deep-space mission in analytical and experimental manners. They have been previously validated by running file transfer experiments using a PC-based testbed. Furthermore, there is a mathematical proof proposed for analytical models that are built for transmission performance involving normalized RTO timer with respect to the total amount of data transmitted.
机译:美国国家航空航天局(NASA)提出了一种名为“延迟/中断容忍网络(DTN)”的端到端网络体系结构,该体系结构可用于深空飞行器通信中的可靠数据传递。捆绑协议(BP)是DTN的主要协议,它使用存储转发机制和贸易交接选项来确保传输的可靠性。 DTN的BP和重传超时(RTO)计时器设置的性能评估方面已经开展了一些工作,以便将BP用于基于中继的深空飞行器通信基础设施上的文件传输,其特点是信号传播延迟长,中断时间长,有损数据链路和不对称信道速率,表明RTO计时器设置为等于或大于往返时间(RTT)。与此不同的是,可能有效利用了深空数据信道的带宽:RTO设置为小于RTT,从而以分析和实验方式实现了用于深空任务的BP的最大传输性能。以前已经通过使用基于PC的测试平台运行文件传输实验来验证它们。此外,对于分析模型提出了数学上的证明,该模型针对包含标准化RTO计时器的传输性能而针对传输的数据总量而建立。

著录项

  • 作者

    Yousefian, Mahnoush.;

  • 作者单位

    Lamar University - Beaumont.;

  • 授予单位 Lamar University - Beaumont.;
  • 学科 Electrical engineering.
  • 学位 M.E.S.
  • 年度 2015
  • 页码 83 p.
  • 总页数 83
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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