On Thu, Jul 31, 2008 at 8:50 AM, Philippe BAYLE <[EMAIL PROTECTED]> wrote: > Hi all, I am working on tinyos 2.x (not the latest CVS release). I am > currently doing modifications on CtpRoutingEngineP.nc file in order to > choose a parent considering severals parameters such as congestion and > energy in extra of ETX. For that I check all the neighbors in the Routing > Table built in the file. The problem is when a node is no longer alive ( for > example if you move the motes) , it stays in the routing Table....and then > it is considered for the choice of a new parent. > I guess that the link Etx value should avoid to consider bad link but it > doesn't. The link quality must increase in a signifiant way when a neighbor > mote "die" but in fact, towards what I observed, it stays at the same > value....This comes from LinkEstimator component with the eetx value. I know > that there was problems about eetx not increasing in the past but I am using > the revision 1.6 of this file and it should works so I don't understand at > all what happens. Can someone tell me if this is a bug or if the eetx value > only increases when the parent (and not a simple neighbor) is lost?
The link estimator value will decrease slowly - the estimator might send beacons once every 1024 seconds if the trickle timer has settled at that value and you will need to realize that you have missed a few beacons before you start seeing lower values. But if you send some data packets, the estimator will be updated rapidly. - om_p _______________________________________________ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
