Realistic Assessment of Transport Protocols Performance over LEO-based Communications

IF 0.6 4区计算机科学 Q4 COMPUTER SCIENCE, INFORMATION SYSTEMS

Ad Hoc & Sensor Wireless Networks Pub Date : 2022-10-24 DOI:10.1145/3551663.3558680

Cristina Hervella, Luis Díez, F. Fernández, N. J. H. Marcano, R. Jacobsen, Ramón Agüero

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Abstract

We study the performance exhibited by transport protocols, TCP and QUIC, over realistic satellite networks. We propose a novel methodology, which combines real implementation (exploiting virtualization techniques) and simulation, to carry out systematic and repetitive experiments. We modify the default operation of the ns-3 framework and we integrate the dynamism that characterizes links in satellite communications, particularly links to LEO satellites. We carry out a thorough assessment over different setups, changing the operating band and the buffer length. In addition, we ascertain the impact of using the multi-streaming feature that QUIC includes. The results show that QUIC yields lower delays than TCP, although in particular setups it might suffer from higher jitter. In addition, using multiple streams in QUIC does not yield a relevant gain. In any case, we can conclude that the behavior of transport protocols over non-terrestrial-networks might not be always optimum and that QUIC can bring benefits when compared to TCP.

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基于leo通信的传输协议性能的现实评估

我们研究了传输协议TCP和QUIC在实际卫星网络上表现出的性能。我们提出了一种新的方法，它结合了实际实现(利用虚拟化技术)和模拟，进行系统和重复的实验。我们修改了ns-3框架的默认操作，并整合了卫星通信链路的动态特征，特别是与低轨道卫星的链路。我们对不同的设置进行了彻底的评估，改变了操作频带和缓冲长度。此外，我们确定了使用QUIC包含的多流特性的影响。结果表明，QUIC比TCP产生更低的延迟，尽管在特定的设置中它可能会遭受更高的抖动。此外，在QUIC中使用多个流不会产生相关的增益。无论如何，我们可以得出结论，非地面网络上传输协议的行为可能并不总是最佳的，与TCP相比，QUIC可以带来好处。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Ad Hoc & Sensor Wireless Networks 工程技术-电信学

CiteScore

2.00

自引率

44.40%

发文量

审稿时长

8 months

期刊介绍： Ad Hoc & Sensor Wireless Networks seeks to provide an opportunity for researchers from computer science, engineering and mathematical backgrounds to disseminate and exchange knowledge in the rapidly emerging field of ad hoc and sensor wireless networks. It will comprehensively cover physical, data-link, network and transport layers, as well as application, security, simulation and power management issues in sensor, local area, satellite, vehicular, personal, and mobile ad hoc networks.