[Ns-developers] A few more questions/comments about wireless-phy

Mathieu Lacage Mathieu.Lacage at sophia.inria.fr
Mon Nov 20 06:27:57 PST 2006


On Mon, 2006-11-20 at 15:23 +0100, Ruben Merz wrote:
> Hi again...
> 
> [snip]
> 
> >>     *
> >>     */
> >>
> >> Still in wireless-phy.h
> >>
> >>    void NotifySyncEndOk (Packet p, uint8_t mode, double snr);
> >>    void NotifySyncEndError (Packet p, uint8_t mode, double snr);
> >>    /* rmz:
> >>     *
> >>     * maybe we should not restrict ourself to a SNR. Instead, I
> >>     * would suggest having a "statistic" class
> > 
> > What other information would you put in there ?
> 
> Well, say BER, PER, error mask (for the people doing video transmission, 
> there was comment about it some time ago), interference level, rx power.

I think that they wanted us to apply the error mask directly on the
packet bits. 

> 
> I agree, it is not strictly necessary. But there will come the time when 
> someone wants to get something else than the SNR from the PHY.

I was thinking that for such extra information, you could use packet
tags. I think we can start with a simple snr for now and then later
change this if/when we feel a compelling reason. Trying to add every
possible feature right now will just complicate the design for no real
gain (at least, for now).

Mathieu
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