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Multi-Timescale Evaluation of Starlink Throughput
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- Garcia, Johan, 1970- (author)
- Karlstads universitet,Institutionen för matematik och datavetenskap (from 2013)
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- Sundberg, Simon, 1995- (author)
- Karlstads universitet,Institutionen för matematik och datavetenskap (from 2013)
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- Caso, Giuseppe (author)
- Karlstads universitet,Institutionen för matematik och datavetenskap (from 2013)
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- (creator_code:org_t)
- ACM Digital Library, 2023
- 2023
- English.
- In: LEO-NET '23. - : ACM Digital Library. - 9798400703324 ; , s. 31-36
- Conference paper (peer-reviewed)
Abstract
Subject headings
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- Although Starlink has been rolled-out for several years, there is still a lack of knowledge regarding system details and performance characteristics. To address this, we perform a network layer measurement campaign utilizing precise times-Tamping to analyze throughput variations at multiple time scales, and infer system timing details. On larger timescales we quantify the diurnal variations where the throughput varies with the time of day. On the medium timescales we establish the likely frequency allocation and beam switching period to be 15 seconds. The associated connectivity disturbances contribute to severe link underutilization for single long-lived TCP flows, which typically reach only 46% of the estimated link capacity. On the sub-millisecond timescale our network layer measurements corroborate recent physical layer investigations of the Starlink frame timing, which is confirmed to be 1.33 ms. © 2023 Owner/Author(s).
Subject headings
- NATURVETENSKAP -- Data- och informationsvetenskap -- Datavetenskap (hsv//swe)
- NATURAL SCIENCES -- Computer and Information Sciences -- Computer Sciences (hsv//eng)
Keyword
- diurnal variation
- frame timing
- LEO
- Frequency allocation
- Timing circuits
- Beam switching
- Measurement campaign
- Multiple time scale
- Performance characteristics
- Time of day
- Time-scales
- Timing details
- Network layers
- Computer Science
- Datavetenskap
Publication and Content Type
- ref (subject category)
- kon (subject category)
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