Coupled congestion control for RTP media

Document Type Replaced Internet-Draft (rmcat WG)
Authors Michael Welzl  , Safiqul Islam  , Stein Gjessing 
Last updated 2015-10-14 (latest revision 2015-06-18)
Replaced by RFC 8699
Stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Expired & archived
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Stream WG state Adopted by a WG
Document shepherd No shepherd assigned
IESG IESG state Replaced by draft-ietf-rmcat-coupled-cc
Consensus Boilerplate Unknown
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


When multiple congestion controlled RTP sessions traverse the same network bottleneck, it can be beneficial to combine their controls such that the total on-the-wire behavior is improved. This document describes such a method for flows that have the same sender, in a way that is as flexible and simple as possible while minimizing the amount of changes needed to existing RTP applications. It specifies how to apply the method for the NADA congestion control algorithm.


Michael Welzl (
Safiqul Islam (
Stein Gjessing (

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