[Tinyos-help] Current MAC protocol in RF230

Miklos Maroti mmaroti at math.u-szeged.hu
Fri Nov 12 13:39:16 PST 2010


Hi Francesco,

Yes, it might be worth to optimize this and turn off the radio in the
backoff state completely. However, turning it back on will take around
1.5 ms, so this is not going to be very helpful for LPL and we might
miss the beginning of other packets. Overall, I think it is not worth
it.

Miklos

On Fri, Nov 12, 2010 at 10:36 PM, Francesco Ficarola
<francesco.ficarola at gmail.com> wrote:
> Miklos Maroti ha scritto:
>> When the mote is in a backoff state, then it is in RX mode which
>> consumes as much energy as TX. So you will not see the packet train
>> from the current consumption. The only thing you can see is when the
>> mote turns off the radio completely (i.e. when it sleeps between
>> wakeups).
>>
>> Miklos
>
> Ah, ok... perfect! Now it comes to light. I did not know that in the
> backoff state the mote is in RX. I thought that the mote sleeps during
> backoff. Great, thank you very much Miklos! :)
>
> Have a nice day.
> --
> Francesco Ficarola <francesco.ficarola_at_gmail_dot_com>
> [GPG KeyID: 0xDBA99D92]
>
>


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