[CUWiN-Dev] G and A and realworld throughput

[listsubs0506]

 >Stelios Valavanis wrote:

>shall i assume that the cuwin is no different and that this would be 
>applicable to cuwin mesh?

I'm far from an expert in these matters and look forward this weekend to 
reading some of the material that David referred us to. But I would 
suggest you not count on any better results in the field than might be 
suggested by the Kumar article. And it could well be worse. You'll see 
here some stats on a quick test I helped with in Boston: 
http://pdos.csail.mit.edu/roofnet/doku.php?id=april2
That has encouraged me to think that there and at similar sites, we 
should aim to use directional antennas on the perimeter as part of 
trying to minimize hops and perhaps that's something that could be 
helpful in your situation. Just this past week we've started doing more 
systematic testing using the Netgear routers so I may have a better 
understanding within the next few weeks, though they don't lend 
themselves to swapping antennas (we'll supplement with at least a couple 
of outdoor boxes that do). Perhaps if you were to describe in more 
detail the architecture in regard to which nodes would be expected to 
communicate with which other nodes, David or others on this list could 
give you a more accurate estimate.

Given this description of yours: "here in chicago we're about to deploy 
a 20 node cuwin mesh backhaul network with cisco APs shooting out to the 
end users. the ciscos are getting donated fyi but i did get the metrix 
kits with dual radios for when cuwin can do dual radio"  I think you'd 
be very intested in the recent segment on Wireless Tech Radio featuring 
MetroFi founder and CEO Chuck Haas especially from minutes 7:18 to 
10:00. You can find the entire MetroFi segment highlighted down towards 
the bottom of the page here:http://www.wirelesstechradio.com/

MetroFi use a two radio backhaul system with 45 degree sector antennas 
and it sounds as if the backhaul radios tend to lock in to a particular 
path but are aware of each others' location and able to reroute if a 
backhaul node fails. I'd be interested if anyone knows more about the 
software that MetroFi uses for that purpose. It seems like the kind of 
thing that might best suit your purpose at the moment, Stel, if it or 
something similar is available.

 Steve Ronan