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A Detailed Characterization of Starlink One-way Delay
Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Mathematics and Computer Science (from 2013).ORCID iD: 0000-0003-3461-7079
Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Mathematics and Computer Science (from 2013).ORCID iD: 0000-0002-3570-9525
Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Mathematics and Computer Science (from 2013).ORCID iD: 0000-0001-7311-9334
2025 (English)In: Proceedings of the 2025 3rd Workshop on LEO Networking and Communication, Association for Computing Machinery (ACM), 2025, p. 43-49Conference paper, Published paper (Refereed)
Abstract [en]

Low Earth Orbit (LEO) satellite networks, such as Starlink, are transforming global Internet access by delivering high-speed connectivity to underserved and remote regions. Despite extensive research into Starlink’s performance, latency characteristics remain under-explored. This study presents a comprehensive analysis of one-way delay components in the Starlink network using high-frequency, high-precision measurement probes. Over a 10-day period, more than 500 million probe packets were collected and analyzed. The results reveal minor diurnal latency variation and provide means to separate out the delay components contributing to the observed one-way delay, and we sketch a delay model and provide empirical distributions. By measuring both uplink and downlink paths, the study uncovers significant differences in scheduling behavior, with uplink delays more affected by Starlink’s periodic 15-second reconfiguration cycles. The results also highlight the limitations of using too coarse measurement intervals, which can introduce aliasing effects. Our OWD data set and traffic generation tool are made available to support further research in the area. 

Place, publisher, year, edition, pages
Association for Computing Machinery (ACM), 2025. p. 43-49
Keywords [en]
Communication satellites, Computer network performance evaluation, Metadata, Orbits, Satellite communication systems, Software engineering, Delay component, Delay models, Global Internet, Internet access, Low earth orbit satellites, Network measurement, One-way delay, Performances evaluation, Satellite network, Starlink, Probes
National Category
Computer Sciences Telecommunications
Research subject
Computer Science
Identifiers
URN: urn:nbn:se:kau:diva-107494DOI: 10.1145/3748749.3749090ISI: 001592384300007Scopus ID: 2-s2.0-105018200219ISBN: 979-8-4007-2090-1 (print)OAI: oai:DiVA.org:kau-107494DiVA, id: diva2:2013617
Conference
LEO-NET Part of SIGCOMM, Coimbra, Portuga, September 8–11, 2025.
Available from: 2025-11-13 Created: 2025-11-13 Last updated: 2025-12-08Bibliographically approved

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Garcia, JohanSundberg, SimonBrunstrom, Anna

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