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Copa-D: Delay Consistent Copa for Dynamic Cellular Networks
Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Mathematics and Computer Science (from 2013).ORCID iD: 0000-0001-8947-0399
Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Mathematics and Computer Science (from 2013).ORCID iD: 0000-0003-4147-9487
Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Mathematics and Computer Science (from 2013).ORCID iD: 0000-0002-0722-2656
Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Mathematics and Computer Science (from 2013).ORCID iD: 0000-0002-8731-2482
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2023 (English)In: 2023 Joint European Conference on Networks and Communications and 6G Summit, EuCNC/6G Summit, IEEE, 2023, p. 508-513Conference paper, Published paper (Refereed)
Abstract [en]

The lack of consideration for application delay requirements in standard loss-based congestion control algorithms (CCAs) has motivated the proposal of several alternative CCAs. Among these new CCAs, Copa is one of the promising few CCAs that have attracted attention from both academia and industry. The delay performance of Copa is governed by a mostly static latency-throughput tradeoff parameter, δ. However, a static δ parameter makes it difficult for Copa to achieve consistent delay and throughput over a range of bottleneck bandwidths. In particular, the coexistence of 4G and 5G networks and the wide range of bandwidths experienced in NG-RANs can result in inconsistent CCA performance. To this end, we propose Copa-D, a modification to Copa that dynamically tunes δ to achieve a consistent delay performance. We evaluate the modification over fixed, 4G, and 5G emulated bottlenecks. Our results show that Copa-D achieves consistent delay with minimal impact on throughput in fixed capacity bottlenecks. Copa-D also allows a more intuitive way of specifying the latency-throughput tradeoff and achieves more accurate and predictable delay in variable cellular bottlenecks. 

Place, publisher, year, edition, pages
IEEE, 2023. p. 508-513
Series
European Conference on Networks and Communications, ISSN 2475-6490, E-ISSN 2575-4912
Keywords [en]
4G, 5G, Copa, delay, QUIC, throughput, Bandwidth, Traffic congestion, Bottleneck bandwidth, Cellular network, Congestion control algorithm, Delay performance, Tradeoff parameters, 5G mobile communication systems
National Category
Computer Sciences Telecommunications
Research subject
Computer Science
Identifiers
URN: urn:nbn:se:kau:diva-96592DOI: 10.1109/EuCNC/6GSummit58263.2023.10188233Scopus ID: 2-s2.0-85168418872ISBN: 979-8-3503-1102-0 (electronic)OAI: oai:DiVA.org:kau-96592DiVA, id: diva2:1794112
Conference
2023 Joint European Conference on Networks and Communications & 6G Summit (EuCNC/6G Summit). 6-9 June 2023. Gothenburg, Sweden.
Available from: 2023-09-04 Created: 2023-09-04 Last updated: 2023-09-04Bibliographically approved

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Haile, Habtegebreil KassayeGrinnemo, Karl-JohanFerlin, SimoneHurtig, PerBrunstrom, Anna

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