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VIRTUALISATION Ratification of 802.11n WLAN standard will usher in new features
VIRTUALISATION Ratification of 802.11n WLAN standard will usher in new features | Ratification of 802.11n WLAN standard will usher in new features |
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| by Stuart Corner | |
| Sunday, 13 September 2009 | |
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Gast, chief strategist in the office of the CTO at WLAN developer, Trapeze Networks, was in Sydney last week to deliver a keynote speech at the Wireless World conference. He told iTWire that the delay in ratification of 802.11n has led to some reluctance by customers to embrace the technology, but said these concerns were largely unfounded. "As an industry we have been focused on interoperability so the idea that we would change in draft 11 [of the new standard] something that was working in draft 2 and break all the products we had shipped just does not fly." He said the most significant aspect of ratification was that it provides a roadmap for future product development. The WiFi Alliance's certification programme, which enables vendors to guarantee that their products will interoperate with those from other vendors, has to date only been implemented for a small subset of 80211n features, so vendors have been reluctant to incorporate uncertifiable 802.1n features into their products. Gast said early extensions to the certification programme should see 802.11n products emerging with greater throughput than the headline rate of 300Mbps in today's draft n products, which use multiple input, multiple output [MIMO] with dual antennas. "The early certification programme was for two spatial streams [separate radio transmissions from separate antennas]. This was a good thing to get started with. It provided a boost of three or for times in speed, [over 802.11a/g] but there is so much more in 802.11n and now we have agreed on how that is going to look, we have a roadmap for the next generation of product. CONTINUED
This article first appeared in ExchangeDaily, iTWire's daily newsletter for telecommunications professionals. Register here for your free trial.
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