2008/5/5 laizhiquan <[EMAIL PROTECTED]>: > hello, all, > I'm simulating apps/tests/TestNetwork with Tossim under TinyOS 2.0.2. > It's found that there are always duplicate receiving on the root node . > Is it because of the mechanism of acknowledgment in the CTP? As I find > that nodes often send, or forward, one packet for several times after "no > acked" is reported each time. I imagine that, althought "no acked" is > reported, sometimes the packet has send successfully and received by the > root, and once retransmitting, duplicate happens. > So, I suppose that there is something wrong with the acknowledgment > mechanism. Is it ? > And if it is, how can I improve it?
If the ack gets lost, the sender retransmits because the sender does not know if the receiver received the packet. - om_p _______________________________________________ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
