[Tinyos-help] MultiHopLEPSM query
Omprakash Gnawali
gnawali at usc.edu
Thu Jul 30 11:58:25 PDT 2009
On Fri, Jul 24, 2009 at 12:36 PM, bharat naik<bharat.2511 at gmail.com> wrote:
> Hi,
>
> Thanks Om.
>
> I was thinking of using receiveEst to centre on a node failure. As you
> correctly pointed out, it takes time. Specifically, it took 3 minutes for
> the receiveEst to be decreased exponentially. However, other than failure is
> there any other case where receiveEst may decrease exponentially, except
> say a lossy link.
> Secondly, in MultiHopLEPSM, in the updateEst() function, if liveliness
> decreases below a threshold, it does: Nbr->sendEst <<= 1; However, if it
> left shifts sendEst, won't its value increase? Later we check if sendEst <
> 25, to choose a parent. Isn't this contradictory?
You can look at the corresponding function in MintRoute, which is a
more modern code. But even MintRoute is several years old and the
contributor is probably no longer supporting the code.
- om_p
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