what is Pre-N?

Question

Helpful geek replaced (at goodly additional cost) our unreliableWRT54G v.2 with a Belkin Pre-N router. Works well, but what's Pre-N?How's it relate to 8011b/g?Brad

Jeff Liebermann · Accepted Answer

Avalanche  hath wroth:It's a form of MIMO.  See:       reason it's called pre-N is because the IEEE has not finalized theMIMO specification 802.11n.  The base technology is 802.11g (OFDM) butuses multiple paths between xmitter and receiver to gain additionalspeed, range, and reliability.  The Belkin version is based on anAirgo Networks chipset.     your Pre-N router can eventually be upgraded to the official802.11n standard is not certain.

Dom · Answer

"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."

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"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."

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Avalanche · Answer

Helpful geek replaced (at goodly additional cost) our unreliableWRT54G v.2 with a Belkin Pre-N router. Works well, but what's Pre-N?How's it relate to 8011b/g?Brad

Jeff Liebermann · Answer

William P.N. Smith  hath wroth:You must be an optimist.  I predict that the 802.11n draft proposalwill be exactly like the 802.11g compromise that conglomerated boththe TI and Proxim proposals into one bloated spec.  The two remaining802.11n proposed standards each have their advantages and really needto be two seperate (and incompatible) standards.  At this time, it'sTGNSync and WWiSE.  TGNSync and WWiSE were to have merged theirproposals, but that fell apart.I expect both sides to fight to the bitter end and refuse tocompromise.  There will probably be a deadlock vote (again) which willprecipitate a compromise conglomeration of standards.  It's the kindof thing the EWC (Enhance Wireless Consortium) would do:        So, in addition to Pre-N, we may two radically different Draft-Nproducts to confuse from.

William P.N. Smith · Answer

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*}

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bumtracks · Answer

When is the anticipated fiNale date of MiMo.

Jeff Liebermann · Answer

I think you mean when will 802.11n be ratified by the IEEE. like final approval in Mar 2007.  Yawn....

what is Pre-N?

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