On Fri, Dec 03, 2021 at 12:21:34PM +0100, hesolium wrote:
> Hi Team,
> 
> theoretically, having 3 radio transceivers, it is possible to synchronize
> time with an accuracy of several dozen microseconds without using TX
> timestamps.
> One can take advantage of the fact that the reception of the same frame by
> two different radio receivers is essentially simultaneous.
> Differences caused by the different distances of the receivers from the
> transmitter are negligible (nanoseconds).

IOW, this is like PPS input.

> I have a project working in an Ad-Hoc WiFi network and I need time
> synchronization with an accuracy of several dozen microseconds.
> All the drivers that I checked have only the software RX timestamps.
> Is a synchronization protocol using only receive timestamps implemented in
> PTP?

No, not to my knowledge.

Sorry,
Richard


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