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BBR: Congestion-Based Congestion Control

delete2017-01-23
delete836
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OA
AI
N
Neal Cardwell
Y
Yuchung Cheng
C
C. Stephen Gunn
S
Soheil Hassas Yeganeh
V
Van Jacobson
DOI:10.1145/3009824delete
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摘要

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En 中文
BY ALL ACCOUNTS, today's Internet is not moving data as well as it should. Most of the world's cellular users experience delays of seconds to minutes; public Wi-Fi in airports and conference venues is often worse. Physics and climate researchers need to exchange petabytes of data with global collaborators but find their carefully engineered multi-Gbps infrastructure often delivers at only a few Mbps over intercontinental distances.(6) These problems result from a design choice made when TCP congestion control was created in the 1980s-interpreting packet loss as congestion.(13) This equivalence was true at the time but was because of technology limitations, not first principles. As NICs (network interface controllers) evolved from Mbps to Gbps and memory chips from KB to GB, the relationship between packet loss and congestion became more tenuous. Today TCP's loss-based congestion control-even with the current best of breed, CUBIC11-is the primary
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