ubuntu-us-ohio team mailing list archive

[James Gifford <james@xxxxxxxxxxxxxxxxx>]

Interesting… very interesting. 

And I don't think sabdfl is directly involved - I seem to remember that he took a step back from Serval (or one of his companies) some time ago, but I could be wrong. 

Cheers,
James Gifford

On Sep 13, 2011, at 20:27, "Stephen Michael Kellat" <skellat@xxxxxxxxxxxx> wrote:

> Forwarded for your consideration as to the possibilities it might lead
> to.
> 
> That, and apparently Mr. Shuttleworth or one of his corporate bodies is
> funding this somehow...
> 
> SMK
> 
> 
> ----- Original message -----
> From: "Paul Gardner-Stephen" <paul@xxxxxxxxxxxxxxxxx>
> To: undisclosed-recipients: ;
> Date: Wed, 14 Sep 2011 09:51:34 +0930
> Subject: [Freedombox-discuss] Serval is getting involved in the 802.11ah
>       standards process
> 
> Hi all,
> 
> Serval is getting involved in the IEEE 802.11ah (WiFi on ISM bands
> below 1GHz) to try to make sure that it is well suited to
> infrastructure-independent ad-hoc and mesh networking at the IEEE
> meeting in Okinawa next week.
> 
> Here is our submission:
> 
> https://mentor.ieee.org/802.11/dcn/11/11-11-1138-00-00ah-packet-radio-mode-for-802-11ah-a-b-g-n.ppt
> 
> Basically we are asking for two things:
> 
> 1. Improvements to ad-hoc mode (or provision of a new "packet radio"
> mode) that remove some of the problems currently faced when creating
> wifi-based ad-hoc mesh networks.
> 
> and
> 
> 2. That the 802.11ah standard consider speeds below 1mbit and using
> cell phone baseband radios as a supported transport so that even cheap
> cell phones can form relatively long range mesh networks without any
> supporting hardware.
> 
> This second point is really important, because compared with 2.4GHz
> WiFi a mesh running in the ISM 915MHz band gains about +9db just from
> the change in frequency, which alone improves range by almost 3x.  If
> it supports lower bit rates, then further significant gains are
> possible, e.g., allowing 100kbit communications gives another +10db,
> for a total of 8x range versus WiFi.
> 
> There are some significant protocol challenges to be addressed, but if
> the standard doesn't support the use-case, then there will be no
> hardware and no chance.
> 
> These measures have the potential to push the indoor range up from
> WiFi's "about one house wide" to "about a block wide" and clear
> line-of-sight range up to a few km, which suddenly makes the formation
> of suburban ad-hoc mesh networks possible, which has profound impact
> for creating resilient infrastructure-independent communications
> solutions, for example for sustaining communications during disaster
> or enabling communications for rural and remote or developing
> populations.
> 
> We admit that we are very green to this process which we frankly find
> to be daunting.
> But we feel compelled to try, regardless of what we perceive to be the
> odds of success.
> 
> We invite any comment, advice or questions on our proposal that anyone
> might have.
> 
> Dr Paul Gardner-Stephen.
> Shuttleworth Telecommunications Fellow,
> Rural, Remote & Humanitarian Telecommunications Research Fellow,
> Flinders University.
> Founder, Serval Project.
> 
> _______________________________________________
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> 
> 
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