Re: New Version Notification for draft-michel-quic-fec-00.txt

[Nicolas Kuhn <[e-mail]>]

Dear François, all,

Thank you for this document. This is very important for the
lossy-GEO-satellite scenario, so thank you!

I have some questions/comments on the document :
- Taxonomy : you may want to refer to RFC8406 on the taxonomy related to
coding
- On the coding channel :
  "A coding channel can be seen as a
   communication channel between a QUIC receiver and a FEC decoder."
  => This is in contradiction with the notion proposed in RFC 9265.
  I think that the coding channel should be seen between the FEC-coder and
the FEC-decoder.
- The notion of APP_DATA in Figure 1 is not clear to me. IMHO the
presentation on this should be improved.
- On DATAGRAMS : I agree that if a solution can also protect DATAGRAMS,
this could help in lossy scenarios
- "In this document,
   we propose to consider whole frames as part of the source symbols."
  => This is important and should be highlighted in the document. It may be
worth expliciting what is meant by "whole frames" and maybe provide
examples.
- Alternative 1 vs Alternative 2 : alternative 2 has an impact on the QUIC
packet scheduler. For this reason, I am not sure whether it is relevant.

I hope this helps,
Kind regards,

Nicolas

On Fri, Oct 21, 2022 at 2:50 PM François Michel <
[e-mail]> wrote:

> Dear all,
>
> Here is a draft discussing the addition of Forward Erasure Correction to
> QUIC.
>
> We wrote this draft to discuss FEC in QUIC and experiment with people.
> It is inspired by our previous work at the nwcrg. We also have
> interesting real-network results that we would be happy to show to
> motivate the interest for this extension.
>
> The design is at an early stage and is intended to evolve. Do not
> hesitate to provide us with comments on the document or the extension in
> general.
>
> Regards,
>
> François
>
>
> -------- Message transféré --------
> Sujet : New Version Notification for draft-michel-quic-fec-00.txt
> Date : Fri, 21 Oct 2022 05:11:22 -0700
> De : [e-mail]
> Pour : François Michel <[e-mail]>, Francois Michel
> <[e-mail]>, Olivier Bonaventure
> <[e-mail]>, Olivier Bonaventure
> <[e-mail]>
>
>
> A new version of I-D, draft-michel-quic-fec-00.txt
> has been successfully submitted by François Michel and posted to the
> IETF repository.
>
> Name:           draft-michel-quic-fec
> Revision:       00
> Title:          Forward Erasure Correction for QUIC loss recovery
> Document date:  2022-10-21
> Group:          Individual Submission
> Pages:          14
> URL:
> https://www.ietf.org/archive/id/draft-michel-quic-fec-00.txt
> Status:         https://datatracker.ietf.org/doc/draft-michel-quic-fec
> Html:
> https://www.ietf.org/archive/id/draft-michel-quic-fec-00.html
> Htmlized:
> https://datatracker.ietf.org/doc/html/draft-michel-quic-fec>
>
> Abstract:
>     This documents lays down the QUIC protocol design considerations
>     needed for QUIC to apply Forward Erasure Correction on the data sent
>     through the network.
>
>
>
>
> The IETF Secretariat
>
>
>