10 Mbit/s problem in your network

Mon Feb 25 16:42:01 UTC 2013

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 at delong.com>
Date: 02/25/2013 8:38 AM (GMT-08:00)
To: Frank Bulk <frnkblk at iname.com>
Cc: NANOG <nanog at 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 at 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 at 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 at baylink.com> wrote:
>
>> ----- Original Message -----
>>> From: "Scott Howard" <scott at 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
>
>
>
>