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2024 (English)In: Computer Networks, ISSN 1389-1286, E-ISSN 1872-7069, Vol. 241, article id 110186Article in journal (Refereed) Published
Abstract [en]
Bundling of multiple access technologies is currently being standardized by 3GPP in the 5G access traffic steering, switching and splitting (ATSSS) framework, with the goal to increase robustness, resiliency and capacity of wireless access. A key part of an ATSSS framework is the packet scheduler, which decides the access network over which each packet is to be transmitted. As wireless channels are highly dynamic, a challenge for any scheduler is to correctly estimate the capacity of each path, and thereby avoid congesting the paths. In this paper, we further develop a recent packet scheduler that exploits cross-layer information from the congestion control state of individual transport layer tunnels when making scheduling decisions. Our aim is to achieve good path utilization while keeping the congestion delay low. Extensive emulations show that our approach reduces the excess delay at the bottleneck to as little as 34%. We furthermore show that our approach improves the performance of end-to-end applications including WebRTC and YouTube compared to state-of-the art.
Place, publisher, year, edition, pages
Elsevier, 2024
Keywords
Scheduling algorithms, Traffic congestion, 5g, Access traffic steering, switching and splitting, Heterogeneous wireless access, MP-DCCP, Multi-path transport layer tunneling, Multipath, Packet scheduling, Splittings, Transport layers, Unreliable traffic, Wireless access, 5G mobile communication systems
National Category
Communication Systems Telecommunications
Research subject
Computer Science
Identifiers
urn:nbn:se:kau:diva-98641 (URN)10.1016/j.comnet.2024.110186 (DOI)001173486200001 ()2-s2.0-85183909966 (Scopus ID)
Funder
Knowledge Foundation, Dnr 20220072
2024-02-272024-02-272024-05-10Bibliographically approved