One can only speculate on bandwidth, but a further source reveals that they are using "multicast wi-fi" http://www.theverge.com/2013/2/20/4006836/barclays-center-app-replays-smartp... It's all powered by Cisco's new StadiumVision Mobile, which reps compared

to how cable is delivered to your TV: instead of everyone having to crowd onto a single connection, the "multicast" connection splits the feed and delivers the same thing individually to everyone. That means my stream is the same whether I'm alone in the stadium or surrounded by 19,000 other Nets fans. In practice, it works remarkably well — I didn't get a chance to test it with 19,000 people, but even in a quickly-filling arena my stream never slowed or broke. I switched between a game feed and a stationary camera above the rim, and jumping back into a replay worked seamlessly.

The stream is delayed about two seconds from the game itself, which for

replays is actually perfect — by the time you look down the play's happening again. It does make it impossible to listen to the TV feed's announcers, though, since they're always slightly behind the game as it unfolds.

On Wed, Aug 28, 2013 at 1:54 AM, Warren Bailey < wbailey@satelliteintelligencegroup.com> wrote:

Any idea of the data rate required per stream?

Sent from my Mobile Device.

-------- Original message -------- From: Joly MacFie <joly@punkcast.com> Date: 08/27/2013 8:14 PM (GMT-08:00) To: North American Network Operators Group <nanog@nanog.org> Subject: Fwd: [newtech-1] Barclays wifi

From the NY tech meetup list. Any one here care to comment, off or on list?

j

---------- Forwarded message ---------- From: Dean Collins

Anyone know more about Barclay Wifi -

http://www.fastcompany.com/3007452/innovation-agents/brooklyn-nets-barclays-... ****

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Can they really stream hidef video to 19,000 devices simultaneously in hd via wifi?

Surely they are hitting some spatial limits…..? (eg I know when my old company sold a DECT platform to the ASX we ran into bandwidth limits for the number of base stations in a single room)****

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Cheers,****

Dean****

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-- --------------------------------------------------------------- Joly MacFie 218 565 9365 Skype:punkcast WWWhatsup NYC - http://wwwhatsup.com http://pinstand.com - http://punkcast.com VP (Admin) - ISOC-NY - http://isoc-ny.org -------------------------------------------------------------- -

-- --------------------------------------------------------------- Joly MacFie 218 565 9365 Skype:punkcast WWWhatsup NYC - http://wwwhatsup.com http://pinstand.com - http://punkcast.com VP (Admin) - ISOC-NY - http://isoc-ny.org -------------------------------------------------------------- -