[Tinyos-help] Energy Detection on the channel

[Adarsh Joshi]

Hi Ittipong,
Thank you so much for your time. I have gone through the B-MAC paper. As per
my knowledge, it does the following.

When a packet is scheduled to be transmitted, it checks the CCA  and
transmits the packet only if the channel is free. Else it takes a random
back-off and tries to send later.

But I don't want to transmit/receive any packet. I just want to know whether
the channel is empty or not.

Thanks again.

On Wed, Apr 1, 2009 at 11:59 AM, Ittipong Khemapech <
ik.tinyos at googlemail.com> wrote:

> Hi,
>
> I have no idea about the Cc2420TKN154C.
>
> For the channel assessment, I think BMAC (Berkeley MAC) is capable of
> checking if the channel is busy. The BMAC paper should be therefore useful
> to you.
>
> Hope this helps.
> Ittipong
>
> 2009/4/1 Adarsh Joshi <joshi.adarsh at gmail.com>
>
>>  Hi,
>>
>> I am trying to detect the energy level on the channels. I am using the
>> Interface EnergyDetection on the Component
>> tos.chips.cc2420_tkn154.CC2420TKN154C. MAybe bacause its a different
>> package, I am getting an error: cannot find `CC2420TKN154C'.
>>
>> Do I have to specify anywhere that I am using other package and not
>> tos.chips.cc2420?
>>
>> Is there any other method to measure the noise level or energy level  of
>> the channel? (in order to determine whether the channel is busy or not.)
>>
>> I just want to know whether a channel is busy or not. I don't want to
>> transmit or receive anything.
>>
>> Thanks a lot for your time and help.
>>
>> --
>> Adarsh Joshi
>> Dept of Computer Science
>> San Diego State University
>> San Diego
>> California - 92115
>>
>> _______________________________________________
>> Tinyos-help mailing list
>> Tinyos-help at millennium.berkeley.edu
>> https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
>>
>
>


-- 
Adarsh Joshi
Dept of Computer Science
San Diego State University
San Diego
California - 92115
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