[R-C] Charter -> congestion avoidance vs. congestion control?

[Mirja Kuehlewind]

Hi,

one more comment regarding the charter. I was wondering if there is a 
difference between congestion avoidance and congestion control. I would say 
congestion avoidance is the more general term, while congestion control 
implies some kind of control loop. 

In case of real-time media traffic, as we have specific traffic 
characteristics, we might end up with something that e.g. only switches 
between certain pre-defined rate depending on feedback that we maybe get 
(only) once per RTT. This is quite different form current (TCP) congestion 
control where you calculate the sending rate based on continuous feedback 
(assuming you have more or less all the time data to send). Would we consider 
both as congestion control or only the latter case which is TCP-like 
congestion control?

I would propose to only talk about congestion avoidance in the charter to make 
sure that we not only aim for TCP-like congestion control but also a solution 
as described above would be in the charter.

Mirja


On Thursday 02 August 2012 19:12:30 Michael Welzl wrote:
> Hi all,
>
> There were two minimal changes to the charter, which is at:
> https://sites.google.com/a/alvestrand.com/rtp-congestion/bof-planning-page/
>wg-charter---input-to-vancouver
>
> It now explicitly says that the following are out of scope:
> * Active queue management; modifications to TCP of any kind; and
> * Multicast congestion control (common control of multiple unicast
> flows is in scope).
>
> Other than that, the charter hasn't changed since the last version
> that was sent around in May.
>
> Cheers,
> Michael
>
> _______________________________________________
> Rtp-congestion mailing list
> Rtp-congestion at alvestrand.no
> http://www.alvestrand.no/mailman/listinfo/rtp-congestion



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Dipl.-Ing. Mirja Kühlewind
Institute of Communication Networks and Computer Engineering (IKR)
University of Stuttgart, Germany
Pfaffenwaldring 47, D-70569 Stuttgart

tel: +49(0)711/685-67973
email: mirja.kuehlewind at ikr.uni-stuttgart.de
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