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Re: What the young developers are assuming
by
Raindeer
There is absolutely no reason to assume that wires will go away. For the last 5 to 10 yards to your device, yes, maybe. But further away? No way. Omni-directional wireless is a shared medium. If you need to share the maximum bandwidth together with others, it will mean that with each addition you will have to share with the others. It gets worse, because you also need to share with the uplinks as well. So with a couple of nodes 54mbits will drop down dramatically with the amount of peers. A very good explanation is given by the CTO of Meshdynamics in the following post:
http://www.oreillynet.com/cs/user/view/cs_msg/40180
So the way to go is from the bottom up... Build a broadband-network to every house and allow a wireless network to span from those houses to the outside world. This instead from the other way round, from the outside world into the house. Now if all ISP's would implement the 802.1X protocol like the academics are doing through Eduroam (www.eduroam.org), we would have nationwide roaming within notime especially if roaming across multiple ISP's is allowed.
The great thing of implementing 802.1X over wifi networks is also that the networks would be able to remain CALEA-compliant. So Uncle Sam would remain happy.
Young peoples enthousiasm is great, but only after they've read Computer Networks by Andy Tanenbaum.
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