[Tinyos-help] about CTP

Omprakash Gnawali gnawali at usc.edu
Wed Oct 1 14:01:35 PDT 2008


On Tue, Sep 30, 2008 at 11:49 PM, jiwen zhang <zhangjiwen029 at gmail.com> wrote:
> Hello om_p :
>    In my test , there is four motes , one is the root , and the id is
> zeor,the others are non-root motes, the ids are 1,2,3. the three non-root
> motes are in the range of root's communication , but when i use the command
> "java net.tinyos.tools.Listen -comm serial at COM1:57600" to see the datas from
> the other motes ,  i find the thl field of some packet is two. is it natual
> case ? because the root is also in the range of the node's communication
> (there is only about ten foots) . why does the case happen ? In my opinion ,
> it should transmit the data to root directly .
>

You should look at the link qualities not just physical proximity of the motes.

- om_p


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