A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Multiparty Multimedia Session Control Working Group of the IETF.
Title : Duplication Grouping Semantics in the Session Description Protocol
Author(s) : Ali Begen
Yiqun Cai
Heidi Ou
Filename : draft-ietf-mmusic-duplication-grouping-00.txt
Pages : 10
Date : 2012-10-03
Abstract:
Packet loss is undesirable for real-time multimedia sessions, but can
occur due to congestion, or other unplanned network outages. This is
especially true for IP multicast networks, where packet loss patterns
can vary greatly between receivers. One technique that can be used
to recover from packet loss without incurring unbounded delay for all
the receivers is to duplicate the packets and send them in separate
redundant streams. This document defines the semantics for grouping
redundant streams in the Session Description Protocol (SDP). The
semantics defined in this document are to be used with the SDP
Grouping Framework [RFC5888]. SSRC-level (Synchronization Source)
grouping semantics are also defined in this document for RTP streams
using SSRC multiplexing.
The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-mmusic-duplication-grouping
There's also a htmlized version available at:
http://tools.ietf.org/html/draft-ietf-mmusic-duplication-grouping-00
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
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