[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
message.

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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