You can put the tmote in deep deep sleep, its almost switched off. You can find the code in tos/lib/Deluge/TOSBoot/tmoteinvent/PowerOffM.nc in moteiv boomerang distribution.
Xavi On Wed, Jul 30, 2008 at 10:13 AM, fatima zohra <[EMAIL PROTECTED]>wrote: > > hi all, > just to thank everybody who helped me to solve the problem about packet > loss rate. > my solution is working. i used some dbg messages to notify each packet > loss; then programmed a small script which calculate the number of occurence > of this "notification". > Hopefully, it works well. > Best regards > 2008/7/26 Omprakash Gnawali <[EMAIL PROTECTED]> > > On Fri, Jul 25, 2008 at 3:22 PM, fatima zohra <[EMAIL PROTECTED]> >> wrote: >> > >> > 2008/7/25 Omprakash Gnawali <[EMAIL PROTECTED]>: >> >> >> >> On Fri, Jul 25, 2008 at 7:37 AM, fatima zohra <[EMAIL PROTECTED]> >> >> wrote: >> >> > >> >> > >> >> > 2008/7/25 Omprakash Gnawali <[EMAIL PROTECTED]>: >> >> >> >> >> >> On Wed, Jul 23, 2008 at 11:45 AM, fatima zohra < >> [EMAIL PROTECTED]> >> >> >> wrote: >> >> >> > >> >> >> > >> >> >> > 2008/7/23 Omprakash Gnawali [EMAIL PROTECTED]: >> >> >> > >> >> >> >> >> >> >> >> If you put sequence numbers in the packet, you can find out which >> >> >> >> packets were not received. For example, you sent sequence numbers >> 1 >> >> >> >> through 10 but and received 1,2,3,4,6,7,8,9,10 then you know >> exactly >> >> >> >> how many packets were not received. >> >> >> >> >> >> >> >> - om_p >> >> >> > >> >> >> > actually this isn't my scenario; >> >> >> > here is an example of my protocol mechanism: >> >> >> > we assume Node1 neighbor of nodes 2 & 3, and these two nodes are >> >> >> > neighbors >> >> >> > of source S (S will send 10 msgs for example) >> >> >> > if 3 crashes so node 1 won't receive any more packets from 3. >> which >> >> >> > means if >> >> >> >> >> >> You said there is one source but why is node 3 sending packets? >> >> > >> >> > because node 3 will forward what the source is sending in order to >> reach >> >> > the >> >> > sink (let's say for example sink = node1 to make it easier) >> >> >> >> >> >> > S sends messages (from numSeq = 5 to 9) node A will never notice >> >> >> > that >> >> >> > he >> >> >> >> >> >> Node A is mentioned here for the first time. Is it node A or 1 or 2 >> or >> >> >> 3? >> >> > >> >> > sorry, it's node 1 (which isn't a "direct" neighbor to the source S) >> >> >> >> >> >> > missed the 5 last nodes (because he doesn't communicate with S >> >> >> > directly >> >> >> > , >> >> >> >> >> >> Nodes or packets? >> >> > >> >> > sorry again, it's "packets" >> >> >> >> >> >> > and node 3 is turned off for ever and node 2 won't help him to >> know >> >> >> > what >> >> >> > node 3 lost as messages (from S or other sources) because seq >> number >> >> >> > is >> >> >> > unique and different for each node (the 5th seqNum for node 2 may >> be >> >> >> > the >> >> >> > 1st >> >> >> > message of the source S) >> >> >> > now i wonna to calculate packet loss rate in my network since i >> have >> >> >> > a >> >> >> > set >> >> >> > of nodes who crash and will lose some sent messages. >> >> >> > am i clear now ? if yes, how to handle this situation. >> >> >> > thanks in advance. >> >> >> > best regards. >> >> >> >> >> >> Your description has some typos and could use some clarification. >> >> >> >> >> >> - om_p >> >> > >> >> > i mention in addition of what was said that: this simulation is done >> to >> >> > study the behavior of the network after some nodes crash. >> >> > so, first i choose some faulty nodes, then , turn them off for the >> rest >> >> > of >> >> > simulation (they won't receive any packet in the future). in the end >> of >> >> > my >> >> > simulation, i calculate my packet loss rate (i.e number of sent >> messages >> >> > but >> >> > not received by faulty nodes once they are stopped). >> >> > is it clear now ? >> >> >> >> Almost. >> >> >> >> So you have a topology that looks like this: S --> 3 --> 1 but 3 is >> >> turned off so 1 is not receiving any packets but you want to find the >> >> loss rate on the link 3-->1? >> >> >> >> - om_p >> > >> > that's it, >> > but S-->3-->1 is just a piece of my topology (i just noticed it to >> clarify , >> > my topology is larger than that). >> > let's work with this small scenario. >> > what's the way to find the packet loss rate ? >> >> Considering your scenario and objective, you should have each node >> send packets periodically just for link estimation. Then you will be >> able to estimate link quality even in the absence of data packets. >> >> - om_p >> > > > _______________________________________________ > Tinyos-help mailing list > Tinyos-help@millennium.berkeley.edu > https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help > -- Xavier Orduña CTO m: [+34] 615 475 065 @: [EMAIL PROTECTED] Dexma Riu de l'or 35 ES-08034 Barcelona t/f: [+34] 93 280 19 18 w: www.dexmatech.com
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