There are some interesting developments with sector (down to 30* or narrower) and multi-band, multi-radio, 4x4MIMO wifi gear lately. Ubiquiti is making amazing strides in this space. Watch 40k wifi connections in a stadium become the norm soon.
I disagree entirely, and counter that the residential traffic of a major city like San Francisco isn’t over a sustained 100GigE link or three. There is ample backhaul and tremendous fiber bandwidth. It’s just all in very slightly (sometimes by a block or less) the wrong places. For one, fiber is fixed and the audience is portable. But carrier backhaul solutions with last mile wireless delivery is going to continue to impress. Watch this space. (he says somewhat hypocritically over his gig symmetric GPON FTTH) > On May 30, 2018, at 10:47 AM, McBride, Mack <c-mack.mcbr...@charter.com> > wrote: > > Scott hit the nail on the head. > Hotel/café/mall wifi is generally horrible for the same reason urban 4g is > horrible. > The backhaul and load on the available spectrum is usually excessive. > Carrier wifi is usually (but not always) equipped with decent backhaul. > However carrier wifi in stadiums usually suffers from problems with spectrum > saturation. > Any wifi or 4G will eventually run out of available bandwidth on assigned > spectrum. > Wifi has the advantage of being able to use smaller range restricted access > points but > the stadium example shows why even that is limited when you have 40K people > trying > to access the internet. > > Mack > > From: K. Scott Helms [mailto:kscott.he...@gmail.com] > Sent: Wednesday, May 30, 2018 11:10 AM > To: mark.ti...@seacom.mu > Cc: McBride, Mack <c-mack.mcbr...@charter.com>; b...@6by7.net; NANOG list > <nanog@nanog.org> > Subject: Re: Impacts of Encryption Everywhere (any solution?) > > Mark, > > A couple of things, first that kind of utilization isn't feasible once > penetration rates in dense areas reach certain levels. There's a reason that > NTT Docomo moved more than 70% of their data traffic to the 3.5 GHz band and > that reason is that there's not (nor will there be) enough wireless spectrum > to meet the needs of everyone with licensed space. (That same use case is > why all the big North American providers are looking at CBRS.) Further, 4G/5G > is going to have trouble scaling to the kinds of network demands going > forward, again especially in dense areas. While it's certainly possible > today to stream unicast video over LTE and will (for a while) even more > feasible over 5G the physics simply aren't with the wireless world. > > I'd say that your example of poor DSL performance isn't unique, it happens in > some spots in the US, but in general wired performance has much higher > individual and even higher aggregate capacities when correctly deployed. I > doubt your hotel example is a poor deployment though, it's more likely that > the hotel owners are under paying for both the WAN connection and the WiFi > infrastructure. > > > On Wed, May 30, 2018 at 1:01 PM Mark Tinka <mark.ti...@seacom.mu > <mailto:mark.ti...@seacom.mu>> wrote: > > > On 30/May/18 17:11, McBride, Mack wrote: > > > In high density urban areas last mile infrastructure (mostly copper) is > > considerably better than 4G. > > Localized carrier powered wifi is good as well but it is not and should not > > be confused with 4G. > > I think it depends on what it is you're trying to do. If your > application is linear IPTV streaming into your home, that probably isn't > a great idea for any kind of non-wired media. On the other hand, in > South Africa, where I live, it is routine to deliver video streaming > services (Netflix, Youtube, ShowMax, e.t.c.) to one's home over 4G/LTE, > to the extent that the service providers have special data plans that > support these kinds of use-cases. > > In South Africa, I generally find wi-fi in the hotels to be pretty bad, > as the majority of them tend to be on ADSL backhaul, which averages > between 1Mbps - 4Mbps to support several dozen or more rooms. A few > hotels have migrated to fibre, but between guessing what last mile > they're on and how they operate the wi-fi network, I ALWAYS prefer to > tether my iPhone to my laptop and work when I'm on the road within the > country. In all major cities, my 3G/4G performs a lot more reliably, > better and predictably than most cafe, hotel or mall wi-fi. I don't even > bother when hotels offer their wi-fi vouchers upon check-in. > > With my 4G services (Vodacom and MTN), I can average between 30Mbps - > 55Mbps when tethering, and that's plenty enough for me. I have a decent > monthly data plan that I don't have to worry about running out. Of > course, performance isn't as great if you're in a remote part of the > country, but that's not unique to South Africa. > > Mark. > The contents of this e-mail message and > any attachments are intended solely for the > addressee(s) and may contain confidential > and/or legally privileged information. If you > are not the intended recipient of this message > or if this message has been addressed to you > in error, please immediately alert the sender > by reply e-mail and then delete this message > and any attachments. 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