802.11n draft version 1.10 was approved by IEEE

802.11n version 1.10 is compatible with the products manufacturers have already created.

Major changes:

• Iimplementation of the 40MHz channel has been adjusted to accommodate older 2.4GHz band devices. The new spec calls for the use of two 20MHz bands. Under version 2.0, the system will scan the environment looking for legacy devices that might not understand the wider bandwidth, in which case the 802.11n device will back off and send data over only a single 20GHz band.


• 802.11n device will be able to check to make sure both channels are clear before sending data.


• Devices will be able to send a signal saying it does not want to receive data in the 40MHz mode. In order for a Bluetooth device to send this alert, it must also include wireless LAN, which, for example, the Apple iPhone includes.

While the spec is now much closer to completion, there are still a number of steps that must be taken before final approval.

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As seen at PCAdvisor