[time-nuts] wifi with time sync

Scott Stobbe scott.j.stobbe at gmail.com
Sat Jan 14 23:21:59 EST 2017


Yes, it will be interesting to see how well wifi rtt/tof does indoors with
plenty of multipath. But for sure sub microsecond.

On Sat, Jan 14, 2017 at 6:32 PM Bob Camp <kb8tq at n1k.org> wrote:

> Hi
>
>
>
>
>
> > On Jan 14, 2017, at 5:29 PM, Scott Stobbe <scott.j.stobbe at gmail.com>
> wrote:
>
> >
>
> > I don't think wifi is ever going to be a real-time system, as it shares
> the
>
> > ether with all other ISM devices. That said even 1 ms of variation is
> still
>
> > 4 orders of magnitude greater than the actual time of flight.
>
> >
>
> > The precision time aspect will most certainly be done in hardware, even
> if
>
> > it's just as simple as a timestamp of receiving the beacon frame.
>
>
>
> My concern *is* that it’s going to be like 1588 in that respect. Off we
> all have
>
> to buy new time stamping hardware. Until that’s all up and running
>
> you don’t get the new timing stuff. Based on what I see, there’s not a lot
>
> of hope for it otherwise.
>
>
>
> Bob
>
>
>
> >
>
> > On Sat, Jan 14, 2017 at 3:35 PM, Bob Camp <kb8tq at n1k.org> wrote:
>
> >
>
> >> Hi
>
>
>
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