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Careful resumption of congestion control from retained state with QUIC

Document Type Replaced Internet-Draft (individual)
Expired & archived
Authors Nicolas Kuhn , Stephan Emile , Gorry Fairhurst , Tom Jones , Christian Huitema
Last updated 2023-01-11 (Latest revision 2022-07-10)
Replaces draft-kuhn-quic-0rtt-bdp
Replaced by draft-kuhn-tsvwg-careful-resume
RFC stream (None)
Intended RFC status (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Replaced by draft-kuhn-tsvwg-careful-resume
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


This document discusses careful resumption of congestion control parameters in QUIC with a cautious method that enables faster startup of new connections. The method uses a set of computed congestion control parameters that are based on the previously observed path characteristics, such as the bottleneck bandwidth, available capacity, or the RTT. These parameters are stored and can then used to modify the congestion control behaviour of a subsequent connection. The draft discusses assumptions around how a server ought to utilise these parameters to provide opportunities for a new connection to more quickly get up to speed (i.e. utilise available capacity). It discusses how these changes impact the capacity at a shared network bottleneck and the response that is needed after any indication that the new rate is inappropriate.


Nicolas Kuhn
Stephan Emile
Gorry Fairhurst
Tom Jones
Christian Huitema

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)