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Framework for Telepresence Multi-Streams
draft-ietf-clue-framework-16

Document type: Active Internet-Draft (clue WG)
Document stream: IETF
Last updated: 2014-06-27
Intended RFC status: Proposed Standard
Other versions: plain text, pdf, html

IETF State: WG Document
Document shepherd: Mary Barnes

IESG State: I-D Exists
Responsible AD: (None)
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CLUE WG                                              M. Duckworth, Ed.
Internet Draft                                                  Polycom
Intended status: Standards Track                           A. Pepperell
Expires: December 27, 2014                                        Acano
                                                              S. Wenger
                                                                  Vidyo
                                                          June 27, 2014

                Framework for Telepresence Multi-Streams
                    draft-ietf-clue-framework-16.txt

Abstract

   This document defines a framework for a protocol to enable devices
   in a telepresence conference to interoperate.  The protocol enables
   communication of information about multiple media streams so a
   sending system and receiving system can make reasonable decisions
   about transmitting, selecting and rendering the media streams.
   This protocol is used in addition to SIP signaling for setting up a
   telepresence session.

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 November 15, 2014.

Copyright Notice

   Copyright (c) 2013 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Duckworth et. al.     Expires December 27, 2014                [Page 1]
Internet-Draft       CLUE Telepresence Framework        June 2014

   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
   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. Terminology....................................................4
   3. Definitions....................................................4
   4. Overview & Motivation..........................................7
   5. Overview of the Framework/Model................................9
   6. Spatial Relationships.........................................14
   7. Media Captures and Capture Scenes.............................16
      7.1. Media Captures...........................................16
         7.1.1. Media Capture Attributes............................17
      7.2. Multiple Content Capture.................................23
         7.2.1. MCC Attributes......................................24
      7.3. Capture Scene............................................29
         7.3.1. Capture Scene attributes............................31
         7.3.2. Capture Scene Entry attributes......................32
         7.3.3. Global Capture Scene Entry List.....................32
   8. Simultaneous Transmission Set Constraints.....................33
   9. Encodings.....................................................35
      9.1. Individual Encodings.....................................35
      9.2. Encoding Group...........................................36
      9.3. Associating Captures with Encoding Groups................37
   10. Consumer's Choice of Streams to Receive from the Provider....38
      10.1. Local preference........................................41
      10.2. Physical simultaneity restrictions......................41
      10.3. Encoding and encoding group limits......................41
   11. Extensibility................................................42
   12. Examples - Using the Framework (Informative).................42
      12.1. Provider Behavior.......................................42
         12.1.1. Three screen Endpoint Provider.....................42
         12.1.2. Encoding Group Example.............................49
         12.1.3. The MCU Case.......................................50

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