what is Pre-N?

Helpful geek replaced (at goodly additional cost) our unreliable
WRT54G v.2 with a Belkin Pre-N router. Works well, but what's Pre-N?
How's it relate to 8011b/g?

Brad


Avalanche

> What is Pre-N?

"Their vision was IEEE 802.11n, which would provide speeds equal to or
greater than 100 Mbit/s LANs. Their work has yet to be completed. The
lack of approval has led some to release so-called Pre-N equipment,
which seeks to give the benefits of the 802.11n standard without an
official standard."

http://en.wikipedia.org/wiki/Pre-N#Overview

"In January 2004 IEEE announced that it had formed a new 802.11 Task
Group (TGn) to develop a new amendment to the 802.11 standard for
local-area wireless networks. The real data throughput is estimated to
reach a theoretical 540 Mbit/s (which may require an even higher raw
data rate at the physical layer), and should be up to 40 times faster
than 802.11b, and near 10 times faster than 802.11a or 802.11g. It is
projected that 802.11n will also offer a better operating distance than
current networks."

http://en.wikipedia.org/wiki/802.11#802.11n

Avalanche <(E-Mail Removed)> hath wroth:

>Helpful geek replaced (at goodly additional cost) our unreliable
>WRT54G v.2 with a Belkin Pre-N router. Works well, but what's Pre-N?
>How's it relate to 8011b/g?

It's a form of MIMO. See:
http://en.wikipedia.org/wiki/MIMO
http://en.wikipedia.org/wiki/Pre-N
http://en.wikipedia.org/wiki/IEEE_802.11#802.11n
The reason it's called pre-N is because the IEEE has not finalized the
MIMO specification 802.11n. The base technology is 802.11g (OFDM) but
uses multiple paths between xmitter and receiver to gain additional
speed, range, and reliability. The Belkin version is based on an
Airgo Networks chipset.
http://www.airgonetworks.com
Whether your Pre-N router can eventually be upgraded to the official
802.11n standard is not certain.


--
Jeff Liebermann (E-Mail Removed)
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

When is the anticipated fiNale date of MiMo.

"Jeff Liebermann" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Avalanche <(E-Mail Removed)> hath wroth:
>
>>Helpful geek replaced (at goodly additional cost) our unreliable
>>WRT54G v.2 with a Belkin Pre-N router. Works well, but what's Pre-N?
>>How's it relate to 8011b/g?
>
> It's a form of MIMO. See:
> http://en.wikipedia.org/wiki/MIMO
> http://en.wikipedia.org/wiki/Pre-N
> http://en.wikipedia.org/wiki/IEEE_802.11#802.11n
> The reason it's called pre-N is because the IEEE has not finalized the
> MIMO specification 802.11n. The base technology is 802.11g (OFDM) but
> uses multiple paths between xmitter and receiver to gain additional
> speed, range, and reliability. The Belkin version is based on an
> Airgo Networks chipset.
> http://www.airgonetworks.com
> Whether your Pre-N router can eventually be upgraded to the official
> 802.11n standard is not certain.
>
>
> --
> Jeff Liebermann (E-Mail Removed)
> 150 Felker St #D http://www.LearnByDestroying.com
> Santa Cruz CA 95060 http://802.11junk.com
> Skype: JeffLiebermann AE6KS 831-336-2558

On Mon, 09 Jan 2006 23:38:42 GMT, "bumtracks" <(E-Mail Removed)> wrote:

>When is the anticipated fiNale date of MiMo.

I think you mean when will 802.11n be ratified by the IEEE.
http://www.ieee802.org/11/802.11_Timelines.htm
Looks like final approval in Mar 2007. Yawn....


--
# Jeff Liebermann 150 Felker St #D Santa Cruz CA 95060
# 831-336-2558 (E-Mail Removed)
# http://802.11junk.com (E-Mail Removed)
# http://www.LearnByDestroying.com AE6KS

Jeff Liebermann <(E-Mail Removed)> wrote:
>"bumtracks" <(E-Mail Removed)> wrote:
>
>>When is the anticipated fiNale date of MiMo.
>
>I think you mean when will 802.11n be ratified by the IEEE.
>http://www.ieee802.org/11/802.11_Timelines.htm
>Looks like final approval in Mar 2007. Yawn....

Oh, it's better than that! Now we get a whole new set of products
labelled "Draft-N", so we can all throw away our Pre-N products and
buy Draft-N, then in 2007 we can throw that all out and buy real
official 802.11n stuff. 8*}

http://www.tgdaily.com/2006/01/08/sp...1n_draws_near/

William P.N. Smith <(E-Mail Removed)> hath wroth:

>Jeff Liebermann <(E-Mail Removed)> wrote:
>>"bumtracks" <(E-Mail Removed)> wrote:
>>
>>>When is the anticipated fiNale date of MiMo.
>>
>>I think you mean when will 802.11n be ratified by the IEEE.
>>http://www.ieee802.org/11/802.11_Timelines.htm
>>Looks like final approval in Mar 2007. Yawn....

>Oh, it's better than that! Now we get a whole new set of products
>labelled "Draft-N", so we can all throw away our Pre-N products and
>buy Draft-N, then in 2007 we can throw that all out and buy real
>official 802.11n stuff. 8*}
>http://www.tgdaily.com/2006/01/08/sp...1n_draws_near/

You must be an optimist. I predict that the 802.11n draft proposal
will be exactly like the 802.11g compromise that conglomerated both
the TI and Proxim proposals into one bloated spec. The two remaining
802.11n proposed standards each have their advantages and really need
to be two seperate (and incompatible) standards. At this time, it's
TGNSync and WWiSE. TGNSync and WWiSE were to have merged their
proposals, but that fell apart.

I expect both sides to fight to the bitter end and refuse to
compromise. There will probably be a deadlock vote (again) which will
precipitate a compromise conglomeration of standards. It's the kind
of thing the EWC (Enhance Wireless Consortium) would do:
http://www.enhancedwirelessconsortium.org
http://www.tgnsync.org
http://www.wwise.org

So, in addition to Pre-N, we may two radically different Draft-N
products to confuse from.



--
Jeff Liebermann (E-Mail Removed)
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558