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Wi-Wi is wireless time sync at 1 nanosecond

77 pointsby Brajeshwarlast Wednesday at 3:06 PM11 commentsview on HN

Comments

Lammyyesterday at 11:31 PM

> Wi-Wi stands for Wireless 2Way interferometry

> 2Way

Does that mean you won't get to know the time unless you let them spy on your physical location too? That's what the diagram implies: https://www.gps.gov/sites/default/files/2025-06/CGSICMeeting...

GNSS time is still cooler because you can have extremely accurate time and a reading of your position without the broadcasting satellites knowing you're there.

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NkVczPkybiXICGyesterday at 10:53 PM

Why does the title say 1ns but the body of the article says 30ns (with hopes to eventually get it down to 5)?

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chrisallicktoday at 12:49 AM

thats insane

ectosphenolast Wednesday at 3:50 PM

That is cool. I use a gps NTP server on my home network and live with sub-millisecond time sync. I’d go PTP but the equipment is a bit too expensive if the only value add is better time sync and I don’t need additional bandwidth. Prices coming down would be nice.

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simulator5gyesterday at 9:31 PM

Better signal penetration with Wi-Wi could be a game changer for battery life.