I haven't done the experiment with telos,
but my experience with mica{2,z} bears this out.
The Detect part of CDMA isn't as good as one would
like it seems...
Anyway, my original mica2 report is at:
http://www.etantdonnes.com/Motes/report_mica2/
and the addenda that deals with micaz is:
http://www.etantdonnes.com/Motes/report_micaz/
MS
Ian Rose wrote:
Apologies if this has been addressed previously:
Currently I am running a simple application to measure the throughput of the
default Telos-A MAC. I have one mote send messages as fast as it can (i.e. it
sends a new message as soon as SendDone is signalled) and another mote keeps a
running count of all of the messages that it hears. In addition, each message
has a sequence number so the listener can tell if a message was missed. When I
run this experiment, I consistantly see that (roughly) only 85% of the sent
messages are received by the listener. If I change the sender to send a little
more slowly, the reception rate quickly goes up to 100%, so its definitely the
speed-of-sending that is causing the ~15% loss rate.
Is this known behavior? What causes it? Does the listener take longer to
"reset" it radio somehow, as compared to the sender?
Thank you very much,
Ian Rose
_______________________________________________
Tinyos-help mailing list
[email protected]
https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
_______________________________________________
Tinyos-help mailing list
[email protected]
https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
