Re: 10 Mbit/s problem in your network

[Warren Bailey <wbailey () satelliteintelligencegroup com>]

I should probably know this, but doesn't N just spread better and have the ability to send receive on multiple 
polarizations? As an RF engineer I should probably know this, but I can't think of many people in my industry who 
really care about 802.11_. I really don't even use wireless in my house, though it's generally due to overcrowding the 
spectrum in populous areas.


> From my Android phone on T-Mobile. The first nationwide 4G network.



-------- Original message --------
From: Owen DeLong <owen () delong com>
Date: 02/25/2013 8:38 AM (GMT-08:00)
To: Frank Bulk <frnkblk () iname com>
Cc: NANOG <nanog () nanog org>
Subject: Re: 10 Mbit/s problem in your network


Correct. However, while A is 5Ghz (only), it's not significantly better than G.

The true performance gains come from 5Ghz and N together. N on 2.4Ghz has
limited benefit over G. N on 5Ghz is significantly better.

Owen

On Feb 24, 2013, at 8:56 PM, "Frank Bulk" <frnkblk () iname com> wrote:

> The IEEE 802.11n standards do not require 5 GHz support.  It's typical, but
> not necessary.
>
> Frank
>
> -----Original Message-----
> From: Owen DeLong [mailto:owen () delong com]
> Sent: Sunday, February 17, 2013 2:07 PM
> To: Jay Ashworth
> Cc: NANOG
> Subject: Re: 10 Mbit/s problem in your network
>
>
> On Feb 17, 2013, at 08:33 , Jay Ashworth <jra () baylink com> wrote:
>
> > ----- Original Message -----
> > > From: "Scott Howard" <scott () doc net au>
> >
> > > > A VPN or SSH session (which is what most hotel guests traveling for
> > > > work will do) won't cache at all well, so this is a very bad idea.
> > > > Might improve some things, but not the really important ones.
> > >
> > > The chances of the average hotel wifi user even knowing what SSH means
> > > is close to zero.
> >
> > {{citation-needed}}
> >
> > > As an aside, I was sitting in JFK airport (terminal 4) a few days ago and
> > > having a shocking time getting a good internet connection - even from my
> > > own Mifi. I fired up inSSIDer, and within a few seconds it had detected
> > > 122 AP's...
> >
> > Yup; B/G/N congestion is a real problem.  Nice that the latest generation
> > of both mifi's and cellphones all seem to do A as well, in addition to
> > current-gen business laptops (my x61 is almost 5 years old, and speaks A).
>
> I think by A you actually mean 5Ghz N. A doesn't do much better than G,
> though
> you still have the advantage of wider channels and less frequency congestion
> with other uses.
>
> Owen