Phil is right, I mean slow variation in time (ten of millisecond) of the RSS between two nodes. Is it feasible to implement something like this? What about simulate network formation? Is it also something feasible?
Thanks a lot guys, .:Fred -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Philip Levis Sent: Friday, May 16, 2008 2:04 PM To: Paul Stickney Cc: tinyos-help@millennium.berkeley.edu Subject: Re: [Tinyos-help] TOS 2.x simulator On May 16, 2008, at 10:55 AM, Paul Stickney wrote: > I do not understand what you mean by slow-fading. > > But... > The UCS tool can be used to create test networks. It lets you specify > many variables in a configuration file which is then generated into a > gain/noise data which can be fed into the TOSSIM T2 radio model (this > may cover what you want). However, Chad Metcalf, in his TOSSIM-Live > paper, shows that UCS isn't necessarily realistic and shows how he was > able to get a much more accurate simulation environment based off of a > real-world scenario. See > toilers.mines.edu/pub/Toilers/ChadMetcalf/cmetcalf-thesis.pdf. Probably the biggest flaw in the current TOSSIM radio model is that the RSSI is completely constant. The RF community has a bunch of terms they use to describe RF behavior which sound mostly incomprehensible to someone who doesn't know them (fast fading, slow fading, shadowing, etc.). In this case, I think he's talking about the fact that signal strength varies over time in slow fading models. Phil _______________________________________________ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help _______________________________________________ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
