On Wed, Oct 1, 2008 at 1:09 PM, Philip Levis <[EMAIL PROTECTED]> wrote: > > On Oct 1, 2008, at 12:22 PM, Hui Kang wrote: > >> The root can get the hop counter from getTHL. >> But how can a node infer the hop counter to root? > > It can't. CTP uses ETX, not hopcount, to measure distance to the root, and > it doesn't keep track of hopcount. >
If ETX is 8, the maximum distance is 8 hops and looking at the minimum threshold for link ETX, one can also estimate the minimum distance. - om_p _______________________________________________ Tinyos-help mailing list [email protected] https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
