[Tinyos-help] How to calculate wake time for receive messages

Daniel Garcia Aubert danielgarciaaubert at gmail.com
Sat Apr 10 01:33:50 PDT 2010

Hi everyone!

I´m using LowPowerListening in T2.1 and I need to calculate how many
milliseconds must wake up before the radio to receive messages. The radio
(CC2420) has a bit rate of 250kbps  and the message size is 30bytes. Then,
the time for receive one message:

(30bytes * 8bit/byte) / (250Kbps *1024bit/kbit) = 0,0009 s to receive one

My questions are:

1. The formula is right?
2. How many messages are required to receive each time the radio wakes up?

Thanks in advance!

Best regards!

Daniel García Aubert
Universidad Carlos III de Madrid.
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