Our final aim is to develop a system like TAG(tiny aggregation)
but for start i am writing few small codes(Tinyos 1.1) for TAG.

According to TAg all children nodes send data to their parent at a fixed
epoch continuously.
In our case for a start we are trying that, 3 children nodes send readings
to their parent
at timer fired every 500ms..
Now the problem is none of the packets reach the parent node due to
collusion  i guess, and rightly so.
So how do i over come this problem because according to TAg children nodes
send data at same time to parent node.

Some ppl suggested me that the underlying MAC layer will handle that but its
not working in my case.

So how do i solve this problem.

Regards
Arpan.
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