On Jan 28, 2009, at 9:34 AM, Nouha Baccour wrote: > Hi all, > > I'm using TOSSIM (T2) simulator. > > Based on extensive simulations, I draw the curve PRR (Packet > reception rate) according to distance. > > This curve shows three reception regions (connected, gray and > disconnected), as it is observed in actual sensor networks. > > Inside the gray (called also transitional) area, the PRR is expected > to fluctuate between 0.15 and 0.85 and it is not correlated with > distance. However, in my curve (based on simulations), I found that > the PRR shows a relatively smooth decay with distance which is > uncommon . This is not acceptable because TOSSIM uses an accurate > link layer model. > > Note that I used the environment parameters as in the Tutorial: > http://www.tinyos.net/dist-2.0.0/tinyos-2.x/doc/html/tutorial/usctopologies.html > > Can someone tell me where the problem can be (in the environment > setting, in the accuracy of TOSSIM, …) >
To follow up: Nouha tried the experiment again and found a grey region. So it was either a mistake in the first experiment or misleadingly clean data. Phil _______________________________________________ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
