[MLB-WIRELESS] Network Structure - Was Re: Anyone know these people?

[rik]

*cough* 1 6 and 11

if channel 1 of the channels where used for the local networks and the other
2 where used for the directional links for bandwidth BAM you could start to
get some real internode speed

i agree with ryan

----- Original Message -----
From: "Ryan Abbenhuys" <sneeze at igreen.net>
To: <melbwireless at wireless.org.au>
Sent: Friday, April 25, 2003 11:30 AM
Subject: Re: [MLB-WIRELESS] Network Structure - Was Re: Anyone know these
people?


> I mesh of omni's won't work.
>
> Because everyone has to be on the same channel to talk, and eventually the
> noise floor from adjacent nodes increases and the network bandwidth dies
in
> the ass.
>
> The setup i've been bugging people with for ages is dedicated backbone
links
> using directional antennas. Then AP's can be hooked in where they're
> appropriate and they aren't going to interfere with the backbone.  For
this
> to work best there has to be some form of channel management, really there
> are only 3 channels we can use 1, 6 and 10 that don't overlap eachother.
We
> also need to use appropriate antenna selections and polarities.  No point
> someone using an omni for a point-to-point link, etc.
>
> ----- Original Message -----
> From: "Dan Flett" <conhoolio at hotmail.com>
> To: "Melbourne Wireless Group" <melbwireless at wireless.org.au>
> Sent: Friday, April 25, 2003 10:06 AM
> Subject: Re: [MLB-WIRELESS] Network Structure - Was Re: Anyone know these
> people?
>
>
> > I think it could work like this, for a permanent infrastructure anyway.
> >
> > The highest highpoints are visible in most areas to most people.  These
> are
> > places such as the CBD, Mt Dandenong and so on.  The CWN should organise
> and
> > plan in such a way so that out in the suburbs, only certain nodes should
> be
> > allowed to link to the highest highpoints. These would be chosen
> considering
> > factors such as the node owner's location (high is good), setup and
> > long-term commitment to the CWN.  Other nodes in the same suburb would
not
> > be allowed to link to the highest highpoints, but would be able to link
to
> > the suburban highpoint, and to each other.  Hopefully after a while the
> > density of nodes in the suburbs would be high enough for a mesh to form,
> > with lots of omni-to-omni links, greatly reducing the strain on the
> backbone
> > links.
> >
> > What about mobile nodes that don't have "high-linking" privileges but
> can't
> > see any other lower nodes?  As well as APs on higponts for the sole use
of
> > the suburban distributor nodes, we could also have open access APs up
> there.
> > These would be for those who are mobile and can't see a suburban
> distributor
> > node.
> >
> > Would the participants in the CWN accept this sort of order being
imposed
> on
> > them?  Would it take some of the fun out of it?  This is where the
> politics
> > comes in. :)  The CWN would need a representitive governing body to be
> able
> > to administer this system.
> >
> > By having this system of restricted access APs on highpoints we have a
> > guaranteed stable backbone over a wide area.   But long-term we can't
rely
> > on a "star" network topology; we need to create a mesh or grid of links.
> > All the CWN participants need to play their part in increasing network
> > connectivity.  Everyone needs to try to link to more than one other
node.
> >
> > Dan
> >
> > ----- Original Message -----
> > From: "Steven Haigh" <netwiz at optusnet.com.au>
> > To: "Dan Flett" <conhoolio at hotmail.com>
> > Cc: "Abe Orchard" <abeorch at ozemail.com>; "Melbourne Wireless Group"
> > <melbwireless at wireless.org.au>
> > Sent: Thursday, April 24, 2003 10:46 PM
> > Subject: [MLB-WIRELESS] Network Structure - Was Re: Anyone know these
> > people?
> >
> >
> > > There's are 2 points to this.... Both totally contradict each
other....
> > >
> > > 1) High points are great, they cover lots of people, and get some
> > > networking happen very quickly, and also spur on growth of the CWN.
> > > Links appear everywhere, and the network starts to grow *very*
rapidly.
> > > This model assumes most people hook up to high-point AP's... Which
makes
> > > sence considering they would cover more people...
> > >
> > > 2) Such as point 1, but the network will buckle under the strain and
the
> > > "fast" speeds of Wifi will peak out around 50k/sec at most - the
network
> > > folds in on itself, and thus becomes useless....
> > >
> > > Opinions? Comments? Facts? Disagree? Feel free to discuss :)
> > >
> > > Dan Flett wrote:
> > >
> > > >Hi Abe,
> > > >
> > > >In the organisation of a Melbourne community network I believe
> higpoints
> > are
> > > >beneficial as backbone links but probably aren't well suited as
general
> > > >access APs.  I don't know how many clients an AP can support at any
one
> > time
> > > >but it can't be that many. (Anyone?) I suppose you'd need to set up
an
> > > >organised distribution system whereby certain people out in the burbs
> > link
> > > >to the distant highpoints, and then distribute the network in their
> local
> > > >area.  Not that such a system precludes the suburbs linking to each
> > other,
> > > >rooftop to rooftop.
> > > >
> > > >Dan
> > > >
> > > >----- Original Message -----
> > > >From: "Abe Orchard" <abeorch at ozemail.com>
> > > >To: "Melbourne Wireless Group" <melbwireless at wireless.org.au>
> > > >Sent: Wednesday, April 23, 2003 11:46 AM
> > > >Subject: [MLB-WIRELESS] Re: Anyone know these people?
> > > >
> > > >
> > > >
> > > >
> > > >>I actually suspect that the network wouldn't really benefit from
such
> > > >>highpoints because they would be more suited to a centralised
network
> > > >>structure.
> > > >>
> > > >>
> > > >
> > > >To unsubscribe: send mail to majordomo at wireless.org.au
> > > >with "unsubscribe melbwireless" in the body of the message
> > > >
> > > >
> > >
> > > --
> > > Signed,
> > > Steven Haigh
> > > http://wireless.org.au
> > > (Visit https://wireless.org.au to install our Root Certificate.)
> > >
> > > You can lead a fool to wisdom but you can't make him think.
> > > We have enough youth. What we need is a fountain of smart.
> > > Egotism is the anesthetic that dulls the pain of stupidity.
> > >
> > >
> > >
> > > To unsubscribe: send mail to majordomo at wireless.org.au
> > > with "unsubscribe melbwireless" in the body of the message
> > >
> > >
> >
> > To unsubscribe: send mail to majordomo at wireless.org.au
> > with "unsubscribe melbwireless" in the body of the message
> >
>
>
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>


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