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WS

walter shawlee 2

Fri, Jan 13, 2017 4:30 PM

While probably not tight enough for time nuts use, there is a new WiFi
technology shown at CES that provides time sync between nodes to allow audio to
be simulcast over many locations. the info (in short form) is here for those
interested:

http://electronicdesign.com/embedded/upgrade-wi-fi-provides-precise-time-sychronization?NL=ED-001&Issue=ED-001_20170113_ED-001_372&sfvc4enews=42&cl=article_2_b&utm_rid=CPG05000002043119&utm_campaign=9246&utm_medium=email&elq2=a803bc263ff84affa98f3ddbd0650ec0

there might be some way it can be used for more precision purposes down the
road. I just thought it might be of interest to the group.
all the best,
walter

--
Walter Shawlee 2, President
Sphere Research Corporation
3394 Sunnyside Rd., West Kelowna, BC
V1Z 2V4 CANADA Phone: (250) 769-1834
walter2@sphere.bc.ca
WS2: We're all in one boat, no matter how it looks to you.
Love is all you need. (John Lennon)
But, that doesn't mean other things don't come in handy. (WS2)

While probably not tight enough for time nuts use, there is a new WiFi technology shown at CES that provides time sync between nodes to allow audio to be simulcast over many locations. the info (in short form) is here for those interested: http://electronicdesign.com/embedded/upgrade-wi-fi-provides-precise-time-sychronization?NL=ED-001&Issue=ED-001_20170113_ED-001_372&sfvc4enews=42&cl=article_2_b&utm_rid=CPG05000002043119&utm_campaign=9246&utm_medium=email&elq2=a803bc263ff84affa98f3ddbd0650ec0 there might be some way it can be used for more precision purposes down the road. I just thought it might be of interest to the group. all the best, walter -- Walter Shawlee 2, President Sphere Research Corporation 3394 Sunnyside Rd., West Kelowna, BC V1Z 2V4 CANADA Phone: (250) 769-1834 walter2@sphere.bc.ca WS2: We're all in one boat, no matter how it looks to you. Love is all you need. (John Lennon) But, that doesn't mean other things don't come in handy. (WS2)

JP

Joshua Pollack

Fri, Jan 13, 2017 4:47 PM

I saw this article too -- is anyone aware of something with more
technical details? For example, where in the protocol stack does it
work? Is it specific to 802.11 or general purpose ethernet?

Speaking as someone who has a primary hobby of the development of
super low cost time sync algorithms and software implementations with
the express application of audio over disparate clocks... this
interests me.

Joshua

On Fri, Jan 13, 2017 at 08:30:44AM -0800, walter shawlee 2 wrote:

While probably not tight enough for time nuts use, there is a new
WiFi technology shown at CES that provides time sync between nodes
to allow audio to be simulcast over many locations. the info (in
short form) is here for those interested:

http://electronicdesign.com/embedded/upgrade-wi-fi-provides-precise-time-sychronization?NL=ED-001&Issue=ED-001_20170113_ED-001_372&sfvc4enews=42&cl=article_2_b&utm_rid=CPG05000002043119&utm_campaign=9246&utm_medium=email&elq2=a803bc263ff84affa98f3ddbd0650ec0

there might be some way it can be used for more precision purposes
down the road. I just thought it might be of interest to the group.
all the best,
walter

--
Walter Shawlee 2, President
Sphere Research Corporation
3394 Sunnyside Rd., West Kelowna, BC
V1Z 2V4 CANADA Phone: (250) 769-1834
walter2@sphere.bc.ca
WS2: We're all in one boat, no matter how it looks to you.
Love is all you need. (John Lennon)
But, that doesn't mean other things don't come in handy. (WS2)

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I saw this article too -- is anyone aware of something with more technical details? For example, where in the protocol stack does it work? Is it specific to 802.11 or general purpose ethernet? Speaking as someone who has a primary hobby of the development of super low cost time sync algorithms and software implementations with the express application of audio over disparate clocks... this interests me. Joshua On Fri, Jan 13, 2017 at 08:30:44AM -0800, walter shawlee 2 wrote: > While probably not tight enough for time nuts use, there is a new > WiFi technology shown at CES that provides time sync between nodes > to allow audio to be simulcast over many locations. the info (in > short form) is here for those interested: > > http://electronicdesign.com/embedded/upgrade-wi-fi-provides-precise-time-sychronization?NL=ED-001&Issue=ED-001_20170113_ED-001_372&sfvc4enews=42&cl=article_2_b&utm_rid=CPG05000002043119&utm_campaign=9246&utm_medium=email&elq2=a803bc263ff84affa98f3ddbd0650ec0 > > there might be some way it can be used for more precision purposes > down the road. I just thought it might be of interest to the group. > all the best, > walter > > -- > Walter Shawlee 2, President > Sphere Research Corporation > 3394 Sunnyside Rd., West Kelowna, BC > V1Z 2V4 CANADA Phone: (250) 769-1834 > walter2@sphere.bc.ca > WS2: We're all in one boat, no matter how it looks to you. > Love is all you need. (John Lennon) > But, that doesn't mean other things don't come in handy. (WS2) > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there.

BC

Bob Camp

Fri, Jan 13, 2017 4:59 PM

Hi

A lot depends on how much “less than a microsecond” the chip sets really deliver in the real world. If they get down into
the sub 100 ns range (which they might), it’s a very useful thing for relaying GPS data from a roof antenna down to an
NTP server in the basement. 1588 is a “less than a microsecond” sort of approach that does indeed get down to nanosecond
sort of levels. This could be similar.

Bob

On Jan 13, 2017, at 11:30 AM, walter shawlee 2 walter2@sphere.bc.ca wrote:

While probably not tight enough for time nuts use, there is a new WiFi technology shown at CES that provides time sync between nodes to allow audio to be simulcast over many locations. the info (in short form) is here for those interested:

http://electronicdesign.com/embedded/upgrade-wi-fi-provides-precise-time-sychronization?NL=ED-001&Issue=ED-001_20170113_ED-001_372&sfvc4enews=42&cl=article_2_b&utm_rid=CPG05000002043119&utm_campaign=9246&utm_medium=email&elq2=a803bc263ff84affa98f3ddbd0650ec0

there might be some way it can be used for more precision purposes down the road. I just thought it might be of interest to the group.
all the best,
walter

--
Walter Shawlee 2, President
Sphere Research Corporation
3394 Sunnyside Rd., West Kelowna, BC
V1Z 2V4 CANADA Phone: (250) 769-1834
walter2@sphere.bc.ca
WS2: We're all in one boat, no matter how it looks to you.
Love is all you need. (John Lennon)
But, that doesn't mean other things don't come in handy. (WS2)

time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

Hi A lot depends on how much “less than a microsecond” the chip sets really deliver in the real world. If they get down into the sub 100 ns range (which they might), it’s a very useful thing for relaying GPS data from a roof antenna down to an NTP server in the basement. 1588 is a “less than a microsecond” sort of approach that does indeed get down to nanosecond sort of levels. This could be similar. Bob > On Jan 13, 2017, at 11:30 AM, walter shawlee 2 <walter2@sphere.bc.ca> wrote: > > While probably not tight enough for time nuts use, there is a new WiFi technology shown at CES that provides time sync between nodes to allow audio to be simulcast over many locations. the info (in short form) is here for those interested: > > http://electronicdesign.com/embedded/upgrade-wi-fi-provides-precise-time-sychronization?NL=ED-001&Issue=ED-001_20170113_ED-001_372&sfvc4enews=42&cl=article_2_b&utm_rid=CPG05000002043119&utm_campaign=9246&utm_medium=email&elq2=a803bc263ff84affa98f3ddbd0650ec0 > > there might be some way it can be used for more precision purposes down the road. I just thought it might be of interest to the group. > all the best, > walter > > -- > Walter Shawlee 2, President > Sphere Research Corporation > 3394 Sunnyside Rd., West Kelowna, BC > V1Z 2V4 CANADA Phone: (250) 769-1834 > walter2@sphere.bc.ca > WS2: We're all in one boat, no matter how it looks to you. > Love is all you need. (John Lennon) > But, that doesn't mean other things don't come in handy. (WS2) > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there.

CC

Chris Caudle

Fri, Jan 13, 2017 5:15 PM

On Fri, January 13, 2017 10:59 am, Bob Camp wrote:

1588 is a "less than a microsecond" sort
of approach that does indeed get down to nanosecond
sort of levels. This could be similar.

There was talk of adding a wireless profile into 1588 either as an
addendum or as part of PTPv3. I suspect this is an early version of that
work, but hard to tell for sure since the phrase "1588" or "PTP" does not
appear in any of those press releases from the Wi-Fi Alliance.

--
Chris Caudle

On Fri, January 13, 2017 10:59 am, Bob Camp wrote: > 1588 is a "less than a microsecond" sort > of approach that does indeed get down to nanosecond > sort of levels. This could be similar. There was talk of adding a wireless profile into 1588 either as an addendum or as part of PTPv3. I suspect this is an early version of that work, but hard to tell for sure since the phrase "1588" or "PTP" does not appear in any of those press releases from the Wi-Fi Alliance. -- Chris Caudle

D

dikshie

Fri, Jan 20, 2017 1:46 PM

Hi,

On Sat, Jan 14, 2017 at 1:30 AM, walter shawlee 2 walter2@sphere.bc.ca wrote:

While probably not tight enough for time nuts use, there is a new WiFi
technology shown at CES that provides time sync between nodes to allow audio
to be simulcast over many locations. the info (in short form) is here for
those interested:

I found a paper that might be relevant:

Clock Synchronization over IEEE 802.11, A Survey of Methodologies and Protocols
http://ieeexplore.ieee.org/document/7782431/

Best,

Dikshie

Hi, On Sat, Jan 14, 2017 at 1:30 AM, walter shawlee 2 <walter2@sphere.bc.ca> wrote: > While probably not tight enough for time nuts use, there is a new WiFi > technology shown at CES that provides time sync between nodes to allow audio > to be simulcast over many locations. the info (in short form) is here for > those interested: I found a paper that might be relevant: Clock Synchronization over IEEE 802.11, A Survey of Methodologies and Protocols http://ieeexplore.ieee.org/document/7782431/ Best, Dikshie

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wifi with time sync