What is a MAC topology? Can you also share the numbers regarding retransmissions and acks?
- om_p On Fri, Mar 25, 2011 at 6:20 AM, Pawel Kuzak <pawelku...@t-online.de> wrote: > Hallo Omprakash, > >>Rest of the wireless sensor network --- node A --- root node >> >>Rest of the wireless sensor network --- node A --- node B --- root node > > Nodes from the "rest of the wireless sensor network" don't send packets > directly to B, because they can't. I have defined a MAC-topology where > the root node only hears node A respectively node B. And node B does > only hear the root node and node A. The root node has acknowledgements > enabled, cause node A respectively node B do receive acknowledgments and > no packets get dropped. > > Greetings, > Paul > > -----Ursprüngliche Nachricht----- > Von: Omprakash Gnawali [mailto:gnaw...@cs.stanford.edu] > Gesendet: Freitag, 25. März 2011 00:12 > An: Pawel Kuzak; TinyOS Help > Betreff: Re: [Tinyos-help] Collection Tree Protocol - Sending to root > node > > On Thu, Mar 24, 2011 at 3:16 PM, Pawel Kuzak <pawelku...@t-online.de> > wrote: >> Hallo Omprakash, >> >> Thank you for your reply. I understand that the closer a node to a > root >> is the more packets it has to deal with, but let me explain my problem >> to you more clearly. I used the following setup: >> >> Rest of the wireless sensor network --- node A --- root node >> >> In the above setup, node1 retransmits a lot of packets. But when I >> change the setup to >> >> Rest of the wireless sensor network --- node A --- node B --- root > node >> >> Node A has a "normal" retransmission rate but now node B does need a > lot >> of retransmissions. I don't understand this, because node B needs to >> transmit the same amount of packets as node A. > > Not necessarily. Some nodes from the "rest of the wireless sensor > network" could be sending packets directly to B. > > You should also check if the root has acks enabled. > > - om_p > > _______________________________________________ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
