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首页> 外文期刊>Aerospace and Electronic Systems, IEEE Transactions on >Unreliable CCSDS File Delivery Protocol (CFDP) over Cislunar Communication Links
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Unreliable CCSDS File Delivery Protocol (CFDP) over Cislunar Communication Links

机译：通过Cislunar通信链接的不可靠的CCSDS文件传送协议（CFDP）

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摘要

The Consultative Committee for Space Data Systems (CCSDS) file delivery protocol, also known as CFDP, is a new standard protocol designed to meet a comprehensive set of file transfer requirements in space communications, especially deep space missions. There has been theoretical and experimental evaluation on the performance of CFDP operation in low Earth orbit (LEO) and geo-stationary Earth orbit (GEO) space environments. However, very few works have evaluated the performance of CFDP in cislunar space, even though the protocol has been particularly developed for deep space communications. In this work we discuss an experimental investigation of the core file-delivery operation of unreliable CFDP, operating with reliable transmission control protocol (TCP), over a simulated cislunar communication link under various channel conditions. Our intention is to evaluate the transmission effectiveness of the core file-delivery operation in unreliable CFDP running on top of a reliable TCP/IP stack over a long-delayed cislunar link, especially when accompanied by link disruptions and a high bit error rate (BER). The performance of unreliable-CFDP/TCP is also compared with other protocol options of CFDP, such as reliable-CFDP/TCP and reliable-CFDP/UDP. The experiment was carried out through realistic file transfers by running the CFDP protocol stack over a communication test-bed incorporating the qualities that define cislunar communication channel characteristics. The research results and discussions presented in this paper should work equally well in any space mission with a round-trip time (RTT) that is comparable to that of the cislunar space.
机译：空间数据系统协商委员会（CCSDS）文件传送协议，也称为CFDP，是一种新的标准协议，旨在满足空间通信特别是深空飞行任务中文件传输的全面要求。在低地球轨道（LEO）和地球静止地球轨道（GEO）空间环境中，CFDP运行的性能已有理论和实验评估。但是，即使该协议是专门为深空通信而开发的，也很少有人评估CFDP在顺月空间中的性能。在这项工作中，我们讨论了对不可靠CFDP的核心文件传递操作的实验研究，该CFDP以可靠的传输控制协议（TCP）在各种信道条件下通过模拟的月牙通信链路运行。我们的目的是评估在长时间延迟的cislunar链接上运行在可靠TCP / IP堆栈上的不可靠CFDP上的核心文件传递操作的传输效率，尤其是在伴随链接中断和高误码率（BER）的情况下）。还将不可靠的CFDP / TCP的性能与CFDP的其他协议选项进行了比较，例如可靠的CFDP / TCP和可靠的CFDP / UDP。通过在包含定义顺时针通信通道特性的质量的通信测试台上运行CFDP协议栈，通过现实的文件传输进行了实验。本文提出的研究结果和讨论在任何与顺时针空间可比的往返时间（RTT）的空间任务中也应同样有效。

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