RTP Media Stream Pause and Resume
draft-westerlund-avtext-rtp-stream-pause-01

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Document Type Active Internet-Draft (individual)
Last updated 2012-05-15
Replaced by rfc7728, draft-ietf-avtext-rtp-stream-pause
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Network Working Group                                           A. Akram
Internet-Draft                                                 B. Burman
Intended status: Standards Track                              D. Grondal
Expires: November 16, 2012                                 M. Westerlund
                                                             Ericsson AB
                                                            May 15, 2012

                   RTP Media Stream Pause and Resume
              draft-westerlund-avtext-rtp-stream-pause-01

Abstract

   With the increased popularity of real-time multimedia applications,
   users demand more control over communication sessions.  This document
   describes how a receiver in a multimedia conversation can pause and
   resume incoming data from a sender by sending real-time feedback
   messages when using Real-time Transport Protocol (RTP) for real time
   data transport.  This document extends the Codec Control Messages
   (CCM) RTCP feedback package by adding a group of new real-time
   feedback messages used to pause and resume RTP data streams.

Status of this Memo

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

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   This Internet-Draft will expire on November 16, 2012.

Copyright Notice

   Copyright (c) 2012 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
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   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents

Akram, et al.           Expires November 16, 2012               [Page 1]
Internet-Draft             Media Stream Pause                   May 2012

   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
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   the Trust Legal Provisions and are provided without warranty as
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Akram, et al.           Expires November 16, 2012               [Page 2]
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Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  4
   2.  Definition . . . . . . . . . . . . . . . . . . . . . . . . . .  5
     2.1.  Abbreviations  . . . . . . . . . . . . . . . . . . . . . .  5
     2.2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . .  5
     2.3.  Requirements Language  . . . . . . . . . . . . . . . . . .  6
   3.  Use Cases  . . . . . . . . . . . . . . . . . . . . . . . . . .  6
     3.1.  Point to Point . . . . . . . . . . . . . . . . . . . . . .  6
     3.2.  RTP Mixer to Media Sender  . . . . . . . . . . . . . . . .  6
     3.3.  Media Receiver to RTP mixer  . . . . . . . . . . . . . . .  7
   4.  Design Considerations  . . . . . . . . . . . . . . . . . . . .  8
     4.1.  Real-time Nature . . . . . . . . . . . . . . . . . . . . .  8
     4.2.  Message Direction  . . . . . . . . . . . . . . . . . . . .  8
     4.3.  Apply to Individual Sources  . . . . . . . . . . . . . . .  8
     4.4.  Consensus  . . . . . . . . . . . . . . . . . . . . . . . .  8
     4.5.  Acknowledgements . . . . . . . . . . . . . . . . . . . . .  9
     4.6.  Retransmitting Requests  . . . . . . . . . . . . . . . . .  9
     4.7.  Sequence Numbering . . . . . . . . . . . . . . . . . . . .  9
   5.  Solution Overview  . . . . . . . . . . . . . . . . . . . . . . 10
   6.  Participants States  . . . . . . . . . . . . . . . . . . . . . 10
     6.1.  Paused State . . . . . . . . . . . . . . . . . . . . . . . 10
       6.1.1.  RTCP BYE Message . . . . . . . . . . . . . . . . . . . 11
       6.1.2.  SSRC Time-out  . . . . . . . . . . . . . . . . . . . . 11
   7.  Message Format . . . . . . . . . . . . . . . . . . . . . . . . 11
     7.1.  Message Acknowledgements . . . . . . . . . . . . . . . . . 13
       7.1.1.  Negative-Acknowledgement (NACK)  . . . . . . . . . . . 14
       7.1.2.  Pause-Acknowledgement (PACK) . . . . . . . . . . . . . 14
       7.1.3.  Resume-Acknowledgement (RACK)  . . . . . . . . . . . . 15
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