[181078] in North American Network Operators' Group
Re: 2.4Ghz 40Mhz 802.11n wifi and Apple Macbook
daemon@ATHENA.MIT.EDU (Colton Conor)
Mon Jun 15 14:21:57 2015
X-Original-To: nanog@nanog.org
In-Reply-To: <557F0DE4.5010308@2mbit.com>
Date: Mon, 15 Jun 2015 13:17:52 -0500
From: Colton Conor <colton.conor@gmail.com>
To: Brielle Bruns <bruns@2mbit.com>
Cc: NANOG <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
So assuming you live in a decent sized house/lot, should you really care
about squatting all over the entire band? I mean sure I can see my
neighbors wifi signals, but they are too weak for me to connect with them.
So wouldn't mine be just as weak at their location, so why should I care
about using the entire band? Aren't I really only using 2/3 of the band by
going to 40Mhz, leaving an entire 20Mhz wide channel free for my neighbors
AP to switch over to?
I see substantial improvements in going from 20 to 40 Mhz from smartphone's
that have 1X1 fixed antennas which is every smartphone. Going from 20 Mhz
with a max theoretical of 72.2Mbps to 40 Mhz with a max theoretical of
150Mbps is a big difference. Especially when you typically only get half of
the max theoretical speed.
On Mon, Jun 15, 2015 at 12:39 PM, Brielle Bruns <bruns@2mbit.com> wrote:
> On 6/14/15 9:56 PM, Alexander Maassen wrote:
>
>> Shoot me if i'm wrong, but doesn't a mac prefer MIMO in order to work
>> correctly?
>>
>
> You still get a nice performance boost with 802.11b/g/n in 2.4 range even
> at 20mhz, but if you go to 40mhz, you'll be splattering all over the entire
> 2.4 band.
>
> This is why all of the pre-N performance enhancements for G were
> troublemakers if you had multiple wireless networks in the same area. You
> turn it on, and one of two things happen - you either wreck performance of
> everyone else on that band, or everyone else wrecks your performance.
>
>
> --
> Brielle Bruns
> The Summit Open Source Development Group
> http://www.sosdg.org / http://www.ahbl.org
>
