Coupled congestion control for RTP media
draft-ietf-rmcat-coupled-cc-07

Document Type Active Internet-Draft (rmcat WG)
Last updated 2017-09-18 (latest revision 2017-09-15)
Replaces draft-welzl-rmcat-coupled-cc
Stream IETF
Intended RFC status Experimental
Formats plain text xml pdf html bibtex
Reviews
Stream WG state Submitted to IESG for Publication (wg milestone: Jul 2017 - Submit identifying a... )
Document shepherd Colin Perkins
Shepherd write-up Show (last changed 2017-07-03)
IESG IESG state RFC Ed Queue
Consensus Boilerplate Yes
Telechat date
Responsible AD Mirja K├╝hlewind
Send notices to Colin Perkins <csp@csperkins.org>
IANA IANA review state Version Changed - Review Needed
IANA action state No IC
RFC Editor RFC Editor state MISSREF
RTP Media Congestion Avoidance Techniques (rmcat)               S. Islam
Internet-Draft                                                  M. Welzl
Intended status: Experimental                                S. Gjessing
Expires: March 19, 2018                               University of Oslo
                                                      September 15, 2017

                Coupled congestion control for RTP media
                     draft-ietf-rmcat-coupled-cc-07

Abstract

   When multiple congestion controlled Real-time Transport Protocol
   (RTP) sessions traverse the same network bottleneck, combining their
   controls can improve the total on-the-wire behavior in terms of
   delay, loss and fairness.  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 Network-Assisted Dynamic Adaptation (NADA) congestion control
   algorithm, and provides suggestions on how to apply it to other
   congestion control algorithms.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on March 19, 2018.

Copyright Notice

   Copyright (c) 2017 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of

Islam, et al.            Expires March 19, 2018                 [Page 1]
Internet-Draft  Coupled congestion control for RTP media  September 2017

   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Definitions . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Limitations . . . . . . . . . . . . . . . . . . . . . . . . .   4
   4.  Architectural overview  . . . . . . . . . . . . . . . . . . .   5
   5.  Roles . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6
     5.1.  SBD . . . . . . . . . . . . . . . . . . . . . . . . . . .   6
     5.2.  FSE . . . . . . . . . . . . . . . . . . . . . . . . . . .   7
     5.3.  Flows . . . . . . . . . . . . . . . . . . . . . . . . . .   8
       5.3.1.  Example algorithm 1 - Active FSE  . . . . . . . . . .   9
       5.3.2.  Example algorithm 2 - Conservative Active FSE . . . .  10
   6.  Application . . . . . . . . . . . . . . . . . . . . . . . . .  11
     6.1.  NADA  . . . . . . . . . . . . . . . . . . . . . . . . . .  11
     6.2.  General recommendations . . . . . . . . . . . . . . . . .  11
   7.  Expected feedback from experiments  . . . . . . . . . . . . .  12
   8.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  12
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  13
   10. Security Considerations . . . . . . . . . . . . . . . . . . .  13
   11. References  . . . . . . . . . . . . . . . . . . . . . . . . .  13
     11.1.  Normative References . . . . . . . . . . . . . . . . . .  13
     11.2.  Informative References . . . . . . . . . . . . . . . . .  14
   Appendix A.  Application to GCC . . . . . . . . . . . . . . . . .  15
   Appendix B.  Scheduling . . . . . . . . . . . . . . . . . . . . .  16
   Appendix C.  Example algorithm - Passive FSE  . . . . . . . . . .  16
     C.1.  Example operation (passive) . . . . . . . . . . . . . . .  19
   Appendix D.  Change log . . . . . . . . . . . . . . . . . . . . .  23
     D.1.  draft-welzl-rmcat-coupled-cc  . . . . . . . . . . . . . .  23
       D.1.1.  Changes from -00 to -01 . . . . . . . . . . . . . . .  23
       D.1.2.  Changes from -01 to -02 . . . . . . . . . . . . . . .  23
       D.1.3.  Changes from -02 to -03 . . . . . . . . . . . . . . .  23
Show full document text