Re: [hybi] BWTP and flow weigth (MulTCP)

Greg Wilkins <gregw@webtide.com> Mon, 08 March 2010 10:24 UTC

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Date: Mon, 08 Mar 2010 11:23:59 +0100
From: Greg Wilkins <gregw@webtide.com>
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To: Ingemar Johansson S <ingemar.s.johansson@ericsson.com>, "hybi@ietf.org" <hybi@ietf.org>
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Subject: Re: [hybi] BWTP and flow weigth (MulTCP)
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Ingemar,

note firstly that it is my intention to come up with a reworked BWTP as a
websocket subprotocol.

But eitherway, I think that having flow control for BWTP channels would
be highly desirable, specially as one of the potential uses of BWTP
is to multiple multiple clients together.

I'll certainly have a read of those links that you provided.

cheers



Ingemar Johansson S wrote:
> Hi folks
> 
> I have a question regarding BWTP and a possible capability to set the flow weight 
> 
> http://tools.ietf.org/id/draft-welzl-multfrc-01.txt 
> and
> http://research.microsoft.com/en-us/um/redmond/events/pv2009/papers/session_congestion_control/paper%2018.pdf
> also http://www.ieee-infocom.org/2004/Papers/52_1.PDF
> 
> discusses the possibility to let the TCP CC algo (or TFRC) behave like N TCP where N can even be a non-integer value.
> This can be used by endpoints to set different weights for the BWTP flows that they initiate. For instance video can be given a weight of 1.0 while voice is given a weight of 5.0.
> 
> Would it be of interest to include a parameter in the initialization that allows the endpoints to set the weight ?. There is of course no guarantee that this parameter will have any effect as it depends fully on the OS implementation of the TCP stack but a parameter like this may be useful in the future.
> 
> /Ingemar
> =================================
> INGEMAR JOHANSSON  M.Sc. 
> Senior Research Engineer 
> 
> Ericsson AB
> Multimedia Technologies
> Labratoriegränd 11
> 971 28, Luleå, Sweden
> Phone +46-1071 43042
> SMS/MMS +46-73 078 3289
> ingemar.s.johansson@ericsson.com
> www.ericsson.com 
> Visit http://labs.ericsson.com !
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