Re: [AVTCORE] I-D Action: draft-ietf-avtcore-rtp-multi-stream-optimisation-12.txt

Colin Perkins <csp@csperkins.org> Wed, 02 March 2016 23:08 UTC

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From: Colin Perkins <csp@csperkins.org>
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Date: Wed, 02 Mar 2016 23:07:30 +0000
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Subject: Re: [AVTCORE] I-D Action: draft-ietf-avtcore-rtp-multi-stream-optimisation-12.txt
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> On 2 Mar 2016, at 22:57, Internet-Drafts@ietf.org wrote:
> 
> 
> A New Internet-Draft is available from the on-line Internet-Drafts directories.
> This draft is a work item of the Audio/Video Transport Core Maintenance of the IETF.
> 
>        Title           : Sending Multiple RTP Streams in a Single RTP Session: Grouping RTCP Reception Statistics and Other Feedback
>        Authors         : Jonathan Lennox
>                          Magnus Westerlund
>                          Qin Wu
>                          Colin Perkins
> 	Filename        : draft-ietf-avtcore-rtp-multi-stream-optimisation-12.txt
> 	Pages           : 18
> 	Date            : 2016-03-02
> 
> Abstract:
>   RTP allows multiple RTP streams to be sent in a single session, but
>   requires each Synchronisation Source (SSRC) to send RTCP reception
>   quality reports for every other SSRC visible in the session.  This
>   causes the number of RTCP reception reports to grow with the number
>   of SSRCs, rather than the number of endpoints.  In many cases most of
>   these RTCP reception reports are unnecessary, since all SSRCs of an
>   endpoint are normally co-located and see the same reception quality.
>   This memo defines a Reporting Group extension to RTCP to reduce the
>   reporting overhead in such scenarios.
> 
> 
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-ietf-avtcore-rtp-multi-stream-optimisation/
> 
> There's also a htmlized version available at:
> https://tools.ietf.org/html/draft-ietf-avtcore-rtp-multi-stream-optimisation-12
> 
> A diff from the previous version is available at:
> https://www.ietf.org/rfcdiff?url2=draft-ietf-avtcore-rtp-multi-stream-optimisation-12

Section 3.6 of the draft is updated, to clarify that the a=rtcp-rgrp SDP attribute is a property attribute with multiplexing category of IDENTICAL. The description of how the attribute is used with SDP offer/answer is also expanded and clarified, in the same section

-- 
Colin Perkins
https://csperkins.org/

[AVTCORE] I-D Action: draft-ietf-avtcore-rtp-mult… internet-drafts
Re: [AVTCORE] I-D Action: draft-ietf-avtcore-rtp-… Colin Perkins