On Fri, Apr 6, 2012 at 10:58 PM, Gary Lee <[email protected]> wrote: > I am wondering what kind of time synchronization (working schedule) > sensor nodes have in Collection Tree protocol? > > As stated in CTP paper, Trickle is used for adaptive beaconing. > Suppose node A and node B are neighbors. Nodes A is about to send a > beacon when Trickle timers expires. However, node B is sleeping then. > What shall node A do?
If you are using asynchronous duty-cycling MAC, node A will send the beacon repeatedly until node B wakes up and receives the packet. If you are using synchronous duty-cycling, node A will queue the packet and transmit the packet when the radio is on. - om_p _______________________________________________ Tinyos-help mailing list [email protected] https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
