[Tinyos-help] TOSSIM packet receiving sequence mixed up.

EunKyung Lee ssinji79 at gmail.com
Mon Feb 11 18:50:21 PST 2008


I noticed that if I broadcast a packet while other nodes are sending
packets, receiving sequence is mixed up.

For example.
I broadcast a packet quite quickly (0.005 sec) and running 9 nodes for
testing.
(I didn't set up the MAC protocol at this time (disabled all properties of
MAC))
As you see at the DEBUG log,
Even though timer fired 7 to 8 sequentially, all other nodes are receiving
the packet 8 to 7.

Can anyone explain about this problem?
Any question or answer will be very appreciated.

Thank you.

---------------------------------------
DEBUG (7): (0:0:0.088828135) RadioCountToLedsC: timer fired, counter is 1.
DEBUG (7): (0:0:0.088828135) RadioCountToLedsC: packet sent.
time 888281350
time 888281450
time 888281550
time 938281250
DEBUG (8): (0:0:0.093828135) RadioCountToLedsC: timer fired, counter is 1.
DEBUG (8): (0:0:0.093828135) RadioCountToLedsC: packet sent.
time 938281350
time 938281450
time 938281550
time 953997811
time 955676268
DEBUG (7): (0:0:0.096239009) Received packet of length 2.(8)
time 962390096
DEBUG (6): (0:0:0.096239009) Received packet of length 2.(8)
time 962390096
DEBUG (5): (0:0:0.096239009) Received packet of length 2.(8)
time 962390096
DEBUG (2): (0:0:0.096239009) Received packet of length 2.(8)
time 962390096
DEBUG (0): (0:0:0.096239009) Received packet of length 2.(8)
time 962390096
DEBUG (1): (0:0:0.096239009) Received packet of length 2.(8)
time 962390096
DEBUG (4): (0:0:0.096239009) Received packet of length 2.(8)
time 962390096
DEBUG (3): (0:0:0.096239009) Received packet of length 2.(8)
time 962390096
time 962743806
time 964068553
time 964422263
DEBUG (8): (0:0:0.097113609) Received packet of length 2.(7)
time 971136091
DEBUG (5): (0:0:0.097113609) Received packet of length 2.(7)
time 971136091
DEBUG (4): (0:0:0.097113609) Received packet of length 2.(7)
time 971136091
DEBUG (1): (0:0:0.097113609) Received packet of length 2.(7)
time 971136091
DEBUG (0): (0:0:0.097113609) Received packet of length 2.(7)
time 971136091
DEBUG (3): (0:0:0.097113609) Received packet of length 2.(7)
time 971136091
DEBUG (2): (0:0:0.097113609) Received packet of length 2.(7)
time 971136091
DEBUG (6): (0:0:0.097113609) Received packet of length 2.(7)
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