Re: [tcmtf] Improvements in the TCM-TF charter draft v8

["Eggert, Lars" <[e-mail]>]

Hi,

On 2013-11-20, at 12:15, Jose Saldana <[e-mail]> wrote:
> - a satellite connection used for providing connectivity in a non-connected
> area during a short period of time (e.g. journalists covering the arrival of
> a mountain stage of a cycling competition).

where does this scenario have multiple L3 hops involved? The bottleneck link is the satellite hop.

> - an air-to-ground connection providing Internet connectivity to the
> passengers of an aircraft, multiplexing a number of simultaneous VoIP flows.

Ditto, the bottleneck here is air-to-ground.

Lars

> Regarding these other two scenarios, perhaps TCM-TF would only be
> interesting when there is a community network in which packets have to
> traverse a (frequently high) number of hops:
> 
> - a wireless Internet connection shared by a number of people in a place
> with low Internet penetration
> - a community network, in which a number of people in the same geographical
> place share their connections in a cooperative way
> 
> For example, in this scenario a community network with a high number of hops
> is considered: http://www.guifi.net/en/guifi_zones. There is also a paper
> about the topology of community networks: "On the topology characterization
> of Guifi.net" http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6379103
> 
> Thanks for your feedback!
> 
> Jose
> 
> -----Mensaje original-----
> De: tcmtf [mailto:[e-mail]] En nombre de Eggert, Lars
> Enviado el: miércoles, 20 de noviembre de 2013 17:20
> Para: [e-mail]
> CC: [e-mail]; Martin Stiemerling; [e-mail]
> Asunto: Re: [tcmtf] Improvements in the TCM-TF charter draft v8
> 
> Hi,
> 
> On 2013-11-20, at 10:24, Jose Saldana <[e-mail]> wrote:
>> But if you want to use it in more than a single hop, ROHC has to be 
>> tunneled, and you lose the savings achieved by compression. So the 
>> idea is that a number of packets (multiplexed) share the tunnel overhead.
> 
> several of the scenarios you describe for TCM-TF seem to be fully addressed
> by ROHC, i.e., do not seem to have multiple L3 hops that require creation of
> a tunnel.
> 
> It would be good to explicitly limit yourself to describing scenarios that
> do have that requirement.
> 
> Lars
>