ABC: A simple explicit congestion controller for wireless networks
Name
1905.03429.pdf
Description
Accepted version
Size
1.04 MB
Format
Adobe PDF
Checksum (MD5)
433e1cab309a78becc4897b3730483ec
Author(s)
Goyal, P
Agarwal, A
Netravali, R
Alizadeh, M
Balakrishnan, H
Date Issued
February 2020
Journal
Proceedings of the 17th USENIX Symposium on Networked Systems Design and Implementation, NSDI 2020
Citation
Goyal, P, Agarwal, A, Netravali, R, Alizadeh, M and Balakrishnan, H. 2020. "ABC: A simple explicit congestion controller for wireless networks." Proceedings of the 17th USENIX Symposium on Networked Systems Design and Implementation, NSDI 2020.
Version
Author's final manuscript
Abstract
© Proc. of the 17th USENIX Symposium on Networked Systems Design and Impl., NSDI 2020. All rights reserved. We propose Accel-Brake Control (ABC), a simple and deployable explicit congestion control protocol for network paths with time-varying wireless links. ABC routers mark each packet with an “accelerate” or “brake”, which causes senders to slightly increase or decrease their congestion windows. Routers use this feedback to quickly guide senders towards a desired target rate. ABC requires no changes to header formats or user devices, but achieves better performance than XCP. ABC is also incrementally deployable; it operates correctly when the bottleneck is a non-ABC router, and can coexist with non-ABC traffic sharing the same bottleneck link. We evaluate ABC using a Wi-Fi implementation and trace-driven emulation of cellular links. ABC achieves 30-40% higher throughput than Cubic+Codel for similar delays, and 2.2× lower delays than BBR on a Wi-Fi path. On cellular network paths, ABC achieves 50% higher throughput than Cubic+Codel.
MIT Department
Massachusetts Institute of Technology. Computer Science and Artificial Intelligence Laboratory
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Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
https://www.usenix.org/system/files/nsdi20-paper-goyal.pdf
