Skip to main content

Sender RTT Estimate Option for DCCP

Document Type Replaced Internet-Draft (individual)
Expired & archived
Authors Gerrit Renker , Gorry Fairhurst
Last updated 2011-02-08 (Latest revision 2010-08-18)
Replaced by draft-ietf-dccp-tfrc-rtt-option
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-ietf-dccp-tfrc-rtt-option
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This Internet-Draft is no longer active.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 describes an update to CCID-3/4 that addresses parameter-estimation problems occurring with TFRC-based DCCP congestion control. The fix uses a recommendation made in the original TFRC specification. It avoids the inherent problems of receiver-based RTT sampling, by utilising higher-accuracy RTT samples already available at the sender. It is integrated into the feature set of DCCP as an end-to-end negotiable extension, upward and downward compatible.


Gerrit Renker
Gorry Fairhurst

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