On Dec 3, 2007, at 10:01 PM, Vijayant Bhatnagar wrote:
Hi,
Since we have started working on TinyOS a week back, I may be
wrong. The following is the change I made:
Please correct me if I am wrong :
call GainRadioModel.putOnAirTo(destNode, sending, metadata-
>ack, evt->time, power, power); //Modified by Vijayant
This is problematic. You are setting the TX power of the receiver's
ACK to be the same TX power as the transmitter. The reason this is
problematic is because the two might not have the same TX powers, and
if the receiver's power is lower than the transmitters you might get
lots of false negative acks. By setting it in this way, you assume a
perfectly consistent TX power setting scheme, which is not achievable
in practice. It would make your results fictional and unachievable in
reality.
As for what those values can be, you should consult chip data sheets
(e.g., CC1000, CC2420).
Phil
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