[spotted on www.scripting.com ... can we schedule these folks for an 
upcoming meeting?] :

http://www.nytimes.com/2002/11/04/technology/04WIRE.html?ex=1036990800&en=6
54dd6da878473bf&ei=5007&partner=USERLAND

>Antenna System Is Said to Expand Wireless Internet Use
>By JOHN MARKOFF
>
>AN FRANCISCO, Nov. 3 � A start-up company plans to announce new antenna 
>technology on Monday that it says can expand the limits of a popular 
>wireless Internet format, providing access to hundreds or even thousands 
>of portable computer users at distances of more than 2,000 feet within 
>buildings and about four miles outdoors.

Yes, it's WiFi. Also good coverage at http://80211b.weblogger.com/ . More 
from NYT:

>the technology [...] employs an 
>antenna shaped like a large picture frame, about three feet by four feet 
>and about three inches thick. 
>
>The Vivato technology, which stems from 1950's research for so-called 
>phased-array antennas for military applications, makes it possible to 
>electronically steer numerous radio beams from a single point. Focusing 
>the beams increases their signal strength, and using large numbers of them 
>greatly increases the antenna's traffic capacity. 

interesting, it's a mesh alternative:

>Vivato's antenna is meant to be placed in the corner of a large office and 
>used to provide wireless service throughout a building. In contrast to 
>many other companies that are trying to extend the range of 802.11 by 
>creating meshes of access points, Vivato takes a more centralized approach 
>by transmitting a series of beams from the antenna.

Wired News has it at 
http://www.wired.com/news/wireless/0,1382,56166,00.html

different approach to roaming, from Wired News:

>Supporting many roaming users from a single base point is the goal behind 
>those products, targeted for release in the first half of 2003. 
>"We think it'll work reasonably well at pedestrian speed," said CEO Ken 
>Biba, a veteran of the original Advanced Research Projects Agency TCP 
>Working Group that developed the transfer protocol used on the Internet. 
>Biba said the company�s approach was to apply the Ethernet local area 
>network model to roaming wireless access, rather than the cellular wide 
>area network model used by cellular carriers. 

R

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