Wifi Highway - could this work?
Reza B'Far (eBuilt)
Fri, 3 Jan 2003 08:55:21 -0800
I agree with Greg and one more thing:
If you look at protocols such as CDMA and W-CDMA, there is particular
attention paid to the fact that people are moving.
Let's assume there are two cars on the road, distance x apart where x >
max_wifi_reach. Now, they can form a network once x < max_wifi_reach. If
they are moving in opposite directions at say 20 miles an hour, you only
have a window of a few seconds to form a network and then leave that network
to join another network.
I'm not sure how possible it is to form a network and get a few meaningful
transactions through during the small time-window that may be available for
short-range type networks. There has to be a hell of a lot of computing
going on for ad-hoc networking when you're going in and out of so many
networks. I also wonder if the security problem will compound this
(performance, etc.)... Finally, I think this would cause some real problems
in implementing application layer protocols such as Http, etc.
I'd be interested to hear if folk think that these problems can be
PS: It's nice to see more technical discussions... beats the hell of the
long political threads ;-) (no flame mail for this please).
From: email@example.com [mailto:firstname.lastname@example.org]On Behalf Of
Gregory Alan Bolcer
Sent: Thursday, January 02, 2003 8:54 PM
Subject: Re: Wifi Highway - could this work?
Two things: how can you setup a wifi network
that's not password protected?
Second, I wouldn't wait for Wifi to hit the
highways. W-CDMA will be here long before
and far more ubiquitous.
Centralized wins out again.
Jeff Barr wrote:
> Ok FoRKers, tell me why this wouldn't work, or why it would, or better
> who can do this.
> I think it would be really cool to have low cost high bandwidth
> in my car, while driving. From the mundane but highly effective
> speed trap information network to streamed audio of my choice to detailed
> traffic and routing info, to vocal IM with fellow travelers, there's got
> a killer app (no jokes about crashing due to distraction from this) in
> Even cooler, it would be better if this were an open service and not
> or regulated into the "expensive luxury" category.
> Last month I found that a neighbor had inadvertently hooked up to my
> WiFi network (its secured now :-). I later walked my neighborhood using a
> WiFi-equipped PocketPC and found 6 other networks within a 10 minute
> walk. In one spot I "saw" 4 networks simultaneously. This tells me that
> WiFi is catching on quickly, at least up here in Redmond near Microsoft.
> So, here's the big idea. What if I WiFi-equipped my car and a bunch of
> other commuters did likewise? Would it be possible to dynamically form
> a network from all of these cars and have car-to-car connectivity? Imagine
> some kind of cheap subscription service to pay for wired-to-WiFi bandwidth
> at some convenient choke points. Sponsorship could also be used.
> Clearly there is some minimum number of equipped cars that would be needed
> to form a peer network. Given the wide open nature of most highways,
> I wonder what this would be. If 1 out of 100 commuters on a particular
> highway had a car-top WiFi antenna, would this be a good start?
> Does anyone else find the possibilities intriguing? Is anyone working on
> anything like this? I want it!
> Jeff Barr - Vertex Development - email@example.com
> IM: MSN: firstname.lastname@example.org; AIM: jeffscottbarr
> Good Stuff: www.syndic8.com www.headlineviewer.com