Hi all. I'm a student of University of Pisa and i'm working on WSN with TinyOs 2.x and telosB motes.
In my application the first mote ( mote A ) sends messages back-to-back to a second mote ( mote B ). Mote B has a timer and when the timer expires it sends an aknowledgment to mote A, this message can arrive to mote A when it is sending a message to mote B or when mote A is waiting for intial backoff or congestion backoff --->so in the first case , there will be a collision between messages. I have simulated this behaviour in TOSSIM , but i find that there is NO collisions between messages sent by mote B and messages sent by mote A, so i think that in TOSSIM the event "receive message" ( in mote A ) is scheduled after the task "send message" ( in mote A ) ----> so there will never be collision... I'm correct or TOSSIM can simulate collision between messages? anyone has tested a situation in which there can be collision between messages in TOSSIM ? Is there any way to simulate collision in TOSSIM? Please anyone can answer me a
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