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A comment on Wi-Fi TimeSync. Parent comment

Re:Wi-Fi TimeSync by TD-Linux on Thursday January 05, 2017 @05:44PM (#13332147)
Probably just the wifi TSF: https://en.wikipedia.org/wiki/Timing_Synchronization_Functio...

Notably used by the Wii U: https://patchwork.kernel.org/patch/5865651/

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Re:Wi-Fi TimeSync by chemag on Thursday January 05, 2017 @08:41PM (#13333233)
TSF is not scalable[0].

[0] http://web.cse.ohio-state.edu/~lai/788-Au03/2-scalibility.pd...

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Re:Wi-Fi TimeSync by chemag on Friday January 06, 2017 @02:17PM (#13339295)
I should have mention this only applies to IBSS (ad-hoc), not to (infra) BSS, where the AP sends the beacon
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Re:Wi-Fi TimeSync by theon144 on Friday January 06, 2017 @08:50AM (#13336160)
>On a commercial level, industry vendors assume the 802.11 TSF's synchronization to be within 25 microseconds.

Meh. Still cool, but a far cry from the sub-MICROsecond accuracy the page suggest, which would indeed be quite revolutionary.

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Re:Wi-Fi TimeSync by chemag on Friday January 06, 2017 @03:44PM (#13340017)
I'm curious which are the use cases for sub-microsecond time sync. Entertainment can probably do with millisecond accuracy. Other use cases mentioned by the Wifi Alliance preso are healthcare, industrial, automotive, and IoT. Do you know any precise use cases?
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