[OLPC Networking] [Server-devel] RSSI value questions

[Michail Bletsas]

Let's not forget that you need some fixed reference points.
In commercial systems, the locations of the access points are well known.
In ad-hoc networks the best that you can hope for is a topological map.

M.

 

server-devel-bounces at lists.laptop.org wrote on 04/02/2008 01:45:14 AM:

> Ryan,
> 
> Like Ben said, inducing the physical layout of the network from metrics 
> such as RSSI will give you poor results for various reasons. What 
> "Space" did was to average arrival rates from direct neighbors over a 
> "long" period of time (anywhere between 1 and 10 seconds) to avoid 
> highly temporal effects like multipath and noise. Even so, the result is 

> only a rough layout of the network. If you'd like to achieve better 
> accuracy I thing you should combine other ideas like sound measurements, 

> as Ben suggested.
> 
> Pol
> 
> 

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