[Tinyos-help] Re: Packet loss problem

[Vijayant Bhatnagar]

It depends on the number of motes you have. For our simulation, we have
taken 80 motes and timer lies between 1 to 1000ms.

Hope that helps.
Vijayant.

On Nov 27, 2007 8:17 PM, SANG Junjun <crabhit at gmail.com> wrote:

> I want to know how long should we set the random timer ?
>
>
> On Nov 28, 2007 5:38 AM, Vijayant Bhatnagar <vijayant.rutgers at gmail.com>
> wrote:
>
> > Hi Tao,
> > The problem was because of the collision of the packets. The problem has
> > been solved by using random timer as suggested by Philipp.
> >
> > Thanks,
> > Vijayant
> >
> > On Nov 27, 2007 11:24 AM, Tao Wu < lanlantao at gmail.com> wrote:
> >
> > > Personally, I think you need to know what caused the packet loss
> > > first. it is that due to collision or MAC design?
> > >
> > >
> > > On Nov 26, 2007 6:57 PM, Vijayant Bhatnagar <
> > > vijayant.rutgers at gmail.com> wrote:
> > > > Hello,
> > > > Can anyone help us out please ? My intuition says that we need to
> > > implement
> > > > ARQ kind of implementation in order to broadcast packets reliably.
> > > >
> > > > Any comments ?
> > > >
> > > > Thanks,
> > > > Vijayant
> > > >
> > > >  On Nov 26, 2007 12:31 PM, Vijayant Bhatnagar <vijayant.rutgers at gmail.com
> > > >
> > > > wrote:
> > > > > Hi,
> > > > > We are trying to simulate broadcast environment. Initially we have
> > > set
> > > > > up 6 motes trying to send packet to "Master" Node. We have
> > > observed
> > > > > that not all 6 motes are able to send the packet. Is it because of
> > > > > backoff problem or some kind of fault with our implementation ?
> > > After
> > > > > going through the tutorials, I could realize that there is
> > > exponential
> > > > > backoff built in cc2420. In that case, do we need to implement ARQ
> > > > > kind of situation to recover from packet loss.
> > > > >
> > > > > Please help.
> > > > >
> > > > > Thanks,
> > > > > Vijayant
> > > > > Rutgers.
> > > > >
> > > >
> > > >
> > > > _______________________________________________
> > > > Tinyos-help mailing list
> > > > Tinyos-help at Millennium.Berkeley.EDU
> > > > https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
> > >
> > > >
> > >
> >
> >
> > _______________________________________________
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>
>
>
> --
> Best Regards,
> SANG JUNJUN
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