On Oct 1, 2009, at 3:23 PM, YangYang wrote:

> Hi,
>
> Are CCA and RTS-CTS the same?  Or in another word the RTS-CTS  
> mechanism in TinyOS is replaced by CCA.

CCA is CSMA. TinyOS link layers typically do not use RTS/CTS (none in  
tos/ do). They use CSMA.

Phil
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