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Wireless-N Could Stand For 'Not Interoperable'

Hardware companies are racing to bring out wireless local area network equipment with far higher speed and capacity. But consumers and businesses should be cautious: As the standard they're based on isn't yet official, early products may not be interoperable and could have performance problems.

Cisco Systems' Linksys division last week rolled out the first of its Wireless-N products using the 802.11n draft specification. Aimed mostly at consumers, Linksys says its WRT300N broadband router offers up to four times the range and 12 times the throughput of its Wireless-G router based on the 802.11g standard. That kind of throughput could better handle bandwidth-hungry apps like high-definition video and voice over IP. Linksys plans to offer Wireless-N products based on the draft spec this summer for businesses with five to 100 users.

Wireless-N uses several radios to transmit two streams of data simultaneously over multiple channels, increasing the capacity of the network. The Wireless-N broadband router is priced at $150, and the notebook adapter goes for $120 at BestBuy.com.

The trade-off for the bandwidth and range is there's no assurance Linksys' first offerings will work with other 802.11n products. The Institute of Electrical and Electronics Engineers agreed on a proposal for the standard in January, but the Wi-Fi Alliance, the group responsible for certifying equipment based on the standard, hasn't developed an interoperability testing program. The IEEE is expected to ratify 802.11n in about a year. Linksys won't guarantee its early Wireless-N products can be upgraded to support the final standard.

The race to market is cause for concern, says Craig Mathias, an analyst with the Farpoint Group. "There's no such thing as 802.11n today, and there's a great issue with calling something draft-compliant," Mathias says.

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