[Commotion-dev] Draft Roadmap

[L. Aaron Kaplan]

On Aug 11, 2011, at 5:12 PM, Michael Rogers wrote:

> This brings to mind some of the work on finding connected dominating
> sets, cluster heads, etc, in MANETs - the goal being to reduce
> collisions in areas of high node density by selecting a few nodes to act
> as a sort of routing backbone for the rest.
> 

In a sense this is the "O" (optimzied) in OLSR (however, it only applies
to the signaling traffic).

> Ben, would your proposal also leave a few nodes transmitting at full
> power, or would everyone turn down their tx power?

This depends very much on the topological (and geographic) setting that you 
are in. If these higher power nodes can be heard by everyone (also the more
quiet nodes) then you will gain little. The goal is to reduce interference.

There is a reason that RF engineering is quite complicated ;-)

My best experience with RF engineering is ) to really know what antennas you are using (gain, opening angles) and 2) see if there is an overlap with other antennas/nodes and 3) use buildings (or trees) as a blocking material between different nodes . Then you can re-use the channels
4) use as low txpower as possible. The whole network improves if everybody is as quiet as possible.

But as I said - RF engineering is an art in it's own.


> It seems like leaving
> a few nodes at full power might help to keep the dense parts of the mesh
> connected to each other as well as connected internally?
> 
> 

I recommend to take a look at "Radio Mobile" (first hit in google).

a.



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