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IEEE ratifies 802.11n specification

12 September 2009 20:56 by James "Dela" Delahunty | 9 comments

The IEEE announced on Friday that its Standards Board has ratified the 802.11n-2009 amendment, designed to help the data communications industry address the escalating demands placed on enterprise, home and public WLANs with the rise of higher-bandwidth file transfers and next-generation multimedia applications. WLANs based on IEEE 802.11 are widely deployed, with more than 1 million units shipping per day.

The 560-page 802.11n amendment, "WLAN Enhancements for Higher Throughput", will enable rollout of significantly more scalable WLANs that deliver 10-fold-greater data rates than previously defined while ensuring co-existence with legacy systems and security implementations.

802.11n increases the data rate from the current 54 Mbit/s to a maximum of 600 Mbit/s. Devices on the market today can support up to 300 Mbit/s (802.11n draft 2.0) by using 2 Spatial Streams at 40 MHz, marketed as "Draft N" devices. The addition of multiple-input multiple-output (MIMO) to improve system performance, channel bonding to the physical layer, frame aggregation to the MAC layer, antenna diversity and spatial multiplexing builds upon he older 802.11a, 802.11b and 802.11g standards.

"This was an extraordinarily wide-ranging technical challenge that required the sustained effort and concentration of a terrific variety of participants. When we started in 2002, many of the technologies addressed in 802.11n were university research topics and had not been implemented," said Bruce Kraemer, Chair of the IEEE Wireless LAN Working Group.

"The performance improvements achieved via IEEE 802.11n stand to transform the WLAN user experience, and ratification of the amendment sets the stage for a new wave of application innovation and creation of new market opportunities."

Permalink to this article

New Wi-Fi Alliance standard aims to compete with Bluetooth (15 October 2009)

Microsoft confirmed 802.11n WiFi adapter for Xbox 360 (22 September 2009)

In-Stat predicts 802.11n will dominate HD market (29 April 2009)

Hisense and Metalink bring hopes of HD over 802.11n (10 July 2007)

Next-gen WiFi technology to deliver IPTV around the home (31 May 2006)

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Lothros (Junior Member) 12 September 2009 21:20
So any news on when the first Full N Cards/Routers are out? [ + quote]
Dela (Staff Member) 12 September 2009 21:29
*Originally posted by Lothros:* So any news on when the first Full N Cards/Routers are out? I think some already have shipped, actually something I'm adding shortly is about the teardown of the iPod Touch revealing it had 802.11n built-in. [ + quote] This message has been edited since posting. Last time this message was edited on 12 September 2009 21:29
Lothros (Junior Member) 12 September 2009 21:30
*Quote:* *Originally posted by Lothros:* So any news on when the first Full N Cards/Routers are out? I think some already have shipped, actually something I'm adding shortly is about the teardown of the iPod Touch revealing it had 802.11n built-in. Shame. I feel sorry for all these people who bought Draft N stuck with half speed :P [ + quote]
ZippyDSM (AfterDawn Addict) 12 September 2009 23:55
What we really need is hardware and drivers/app that emulates windose networking but offers easy to use file shearing and browsing. networking on widnose is hellish.... [ + quote]
borhan9 (AfterDawn Addict) 13 September 2009 17:35
I like this when is this happening for Australia? *Quote:* The 560-page 802.11n amendment Wow what a big amendment thats a big document must have some major changes well if the speed difference is from 54mbps to 600Mbps no wonder i would love to take advantage of this new standard. [ + quote]
Josipher (Junior Member) 14 September 2009 2:53
so next time you buy a laptop how can you tell theyre not trying to pass you off the unratified N technology? [ + quote]
Lothros (Junior Member) 14 September 2009 6:05
*Originally posted by Josipher:* so next time you buy a laptop how can you tell theyre not trying to pass you off the unratified N technology? Draft N vs N [ + quote]
Josipher (Junior Member) 14 September 2009 13:47
*Quote:* *Originally posted by Josipher:* so next time you buy a laptop how can you tell theyre not trying to pass you off the unratified N technology? Draft N vs N so its concluded that N is better? and its completely safe to buy laps with N technology? [ + quote]
Lothros (Junior Member) 14 September 2009 16:13
*Quote:* *Quote:* *Originally posted by Josipher:* so next time you buy a laptop how can you tell theyre not trying to pass you off the unratified N technology? Draft N vs N so its concluded that N is better? and its completely safe to buy laps with N technology? N has been ratified. [ + quote]