Feeds

Wi-Fi body to highlight 802.11n aerial counts

'Draft' no more

Boost IT visibility and business value

The Wi-Fi Alliance (WFA) has celebrated the recent ratification - at long, long last - of the 802.11n standard by updating its logo for certified wireless networking kit.

But it's not simply removing the 'Draft' text from its existing logo - it is to add an indication of the number of spatial streams a given product can handle.

Wi-Fi 802.11n

802.11n: no longer a 'draft' spec

802.11n's multi-antenna MIMO (multiple input, multiple output) design allows it to maintain a number of links. A comparison of the signals allows networked devices to get a better picture of the local wireless conditions and adapt accordingly the better to boost throughput.

Wi-Fi mandates a two-stream minimum - two transmit-receive pairs - but devices can use three, four or more antenna in a bid to increased the available bandwidth at any given time.

How to tell which is which without poring over sheets of mind-boggling tech specs? The WFA will now stamp 'Dual-Stream n' or 'Multi-Stream n' logos on certified 802.11n devices that use, respectively, two or more spatial streams.

There's no sign of a 'Single-Stream n' logo, suggesting the WFA is accepting the view that single-antenna devices are not true 802.11n gadgets since the standard mandates at least two aerials.

Wi-Fi 802.11n

Make sure you buy the right one

The WFA certification process now includes mandated support for packet aggregation during transmission to make data tranfers more efficient and for Space-Time Block Coding (STBC) which, apparently, improves link reliability when you have more than one pair of antennae.

The organisation also said it will impose "channel coexistence measures" to ensurer certified kit doesn't hinder other WLANs when it's operating at 40MHz in the 2.4GHz band. ®

Seven Steps to Software Security

More from The Register

next story
Major problems beset UK ISP filth filters: But it's OK, nobody uses them
It's almost as though pr0n was actually rather popular
Google Nest, ARM, Samsung pull out Thread to strangle ZigBee
But there's a flaw in Google's IP-based IoT system
Orange spent weekend spamming customers with TXTs
Zero, not infinity, is the Magic Number customers want
US freemium mobile network eyes up Europe
FreedomPop touts 'free' calls, texts and data
Apple orders huge MOUNTAIN of 80 MILLION 'Air' iPhone 6s
Bigger, harder trouser bulges foretold for fanbois
'Two-speed internet' storm turns FCC.gov into zero-speed website
Deadline for comments on net neutrality shake-up extended to Friday
NBN Co execs: No FTTN product until 2015
Faster? Not yet. Cheaper? No data
Oh girl, you jus' didn't: Level 3 slaps Verizon in Netflix throttle blowup
Just hook us up to more 10Gbps ports, backbone biz yells in tit-for-tat spat
prev story

Whitepapers

Seven Steps to Software Security
Seven practical steps you can begin to take today to secure your applications and prevent the damages a successful cyber-attack can cause.
Consolidation: The Foundation for IT Business Transformation
In this whitepaper learn how effective consolidation of IT and business resources can enable multiple, meaningful business benefits.
Designing a Defense for Mobile Applications
Learn about the various considerations for defending mobile applications - from the application architecture itself to the myriad testing technologies.
Build a business case: developing custom apps
Learn how to maximize the value of custom applications by accelerating and simplifying their development.
Consolidation: the foundation for IT and business transformation
In this whitepaper learn how effective consolidation of IT and business resources can enable multiple, meaningful business benefits.