[MLB-WIRELESS] [TECH] Dipole antennas, and melbwireless structure

[Jon]

I'd be very excited to see what could be done with out-of-the-box components, such as OSPF, MobileMesh,
&c. and _omni_ tranceiver nodes.

This is where I have to blow my own trumpet.
I am working on a white paper defining an ad-hoc anonymous protocol which I call PunkNet or Punk/Net -
however I bow my head to people who have actually got stuff working, like MobileMesh.



Jon


Ben Anderson wrote:

> I disagree with this as a "structure" as it's backbone based, and won't
> scale to more than a few of handfuls of nodes.
> For it to have any chance of scaling larger (both technically and socially)
> each node has to be capable of routing for another node... thereby building
> a large mesh, where one only has to be able to see one other node to
> communicate, though the better connected, the more 'useful' that node is for
> the rest of the network.  And to encourage this 'better connectedness' I've
> been proposing (and hoping for comments) a "mojonation" like setup, where
> the more traffic that gets transferred through your system, the more "mojo"
> you have to spend on routing traffic through other systems...  This isn't
> pay for bandwidth as such, just 'premium access' -- any spare would go to
> whoevers demanding it in a 'fair' fashion.  And this encourages people to
> network better so _they personally_ get better access -- most people seem
> very willing to spend a thousand dollars on better equipment if they get
> 'better access'.
> Some people have brought up the fact that people on 'edges' will get
> discriminated against by getting poorer access because they're not
> transferring others data....   One potential thing could be other services,
> hosting, data, etc, but since the network is primarily about transferring
> data, I suspect that it's going to have to be a consequence to get it to
> scale.  Unless someone else has an idea to bypass this limitation?  (I
> purposfully built in this 'leaf node discrimination' to prevent leaf nodes
> logging on and doing nothing but sucking down high bandwidth apps off the
> network (mp3, warez, movies, etc).
>
> Also, to prevent lots of bandwidth being wasted doing network discovery as
> in OSPF, or mobilemesh, I'm proposing a networking scheme that relates to
> physical location....  This has privacy concerns, but so far I've not come
> up with any reasonable alternatives that don't have a central administrative
> overhead that limits the scalability of the network.  So for example, to get
> a packet to a device, you need to know it's gps co-ordinates.  I'm proposing
> a network layer implimentation of this so tcp/udp apps can still be run over
> the top of it.  Intelligent caching, even perhaps a 'dns' style node
> location system may be useful in producing a "nasty hack" version of what
> i'm talking about using current networking stacks...
>
> Encryption in this network would be a very high priority, to prevent nodes
> from intercepting traffic, and modifying it unknown.  For example, a
> commercial entity could setup a load of nodes, and use it to insert spam
> randomly into all our traffic....  With encryption, that dissappears.  And
> it also removes some of (but not all) the privacy concerns.  Encryption
> isn't really a "hard" problem based on the ready-made libraries that
> exist...  The routing protocol, and actually getting it working (and then
> getting it working on win* platforms...  (I don't even want to _think_ about
> a network layer win32 app, let alone build one))
>
> Ideally, I'd like to have a pll, a mixer, a big, high-bandwidth DAC/ADC and
> a dsp/fpga combo to impliment a lot of different modulation techniques (ie
> the closer you are, the more wideband, spread spectrum high bandwidth
> protocol you use.  And the further you get, the more narrow band, slower,
> reflection and fade resistant modulation you use.  So you can still get
> _any_ connectivity when you're 'just' out of range...  But this is definatly
> a long term 'fun' project (money, time...)  (though if someone wants to hire
> me...  ;)
> Beauty of this, you could implement 802.11, 802.11a, bluetooth, IR, GPRS,
> ham radio protocols all in the one device, allowing widespread
> interoperability between devices...  I'm not proposing doing all the
> applicaiton layer stuff to make this work, just the hardware and low level
> software to provide an interface to do cool stuff...  Provide cool stuff,
> the coders will come :)
>
> Yes, I know I've written about this before, but last time I mixed it up with
> the 'committee' stuff, and it seems the tech detail got confused...  So here
> it is again for your perusal :)
>
> Have fun,
> Ben.
>
> > From what I'm reading, the basic proposed structure for nodes is you
> > have one (or two) directional antennas, to connect you to the rest of
> > the network, and one omni so people can connect to you.
> >
> > Now, my understanding of a dipole antenna design is the AP finds the
> > strongest signal on an antenna, then uses that ONE antenna to pick up
> > the signal. .. so you can only receive one signal on one antenna at
> > one time.
> >
> > Therefore, if someone with a 100mw laptop is sitting in your front
> > yard, your AP is going to use the omni, not the directional antenna,
> > thus cutting out your link to the rest of the world.
> >
> > Am I reading wrong, or do I have my technical info wrong?
> >
> > Will.
> >
> > ---
> > "They that can give up essential liberty to obtain a little temporary
> safety deserve neither liberty nor safety." -- Benjamin Franklin, 1759
> >
> >
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--
There is no god, nothing on this planet was ever built with alien technology, and yes we did go to the
moon in 1969. Get used to it.



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