[Tinyos-help] basic questions

[Philipp Engel]

Hello,

thank you both for your answers.
Now that I know that TinyOS 2 runs on the hardware, I can focus on  
its source code.

Am 05.03.2007 um 19:57 schrieb Philip Levis:
>> Is there a standard protocol stack (up to ISO layer 3 or even 4)  
>> in TOS?
>
> No. There are many layer 3 protocols, and some layer 4 protocols  
> built on top of them. For example, TinyOS 1.x, Boomerang, and  
> TinyOS 2.0 all have different collection tree protocols (layer 3).  
> TinyOS 1.x has two: MintRoute and MultihopLQI. The latter is  
> generally more efficient than the former, but only works on nodes  
> with a CC2420 radio (telos, micaz). Boomerang has a slightly  
> modified version of MultihopLQI. TinyOS 2.x has  CTP (the  
> Collection Tree Protocol), which is specified in TEP 123.

That's the information I was looking for...up to your explanation, I  
was randomly browsing through the source trees and the documentation,  
but you mentioned some things that seems to be good keywords for  
further research.

The routing principles you talked about seem to be different from  
e.g. the IP routing, why is that? Is it due to the special situation  
in ad-hoc wireless networks?

Philipp
--
"They that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety."  Benjamin Franklin
http://www.filzip.com




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