-Caveat Lector-

from:
http://www.wired.com/news/news/technology/story/20504.html
<A
HREF="http://www.wired.com/news/news/technology/story/20504.html">Technology
News from Wired News
</A>
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Zeroing In on Cell-Phone 911s
by Chris Oakes
12:00 p.m.  30.Jun.99.PDT

Cell phones are growing smarter all the time, and Bell Labs wants to
make them smarter about where cell phone calls are originating.
Lucent Technologies' Bell Labs unwrapped a technology Wednesday the
company claims will allow mobile-phone companies to pinpoint a caller's
location to within 15 linear feet.

The company said the technology will be useful for locating 911 callers
in distress. User location could also be used to provide driving
directions and local traffic information.

Bell Labs said the technology is accurate within 15 linear feet when
users are outdoors and within 100 linear feet when they are indoors. A
linear foot roughly indicates the radius of a circle within which the
phone is located.

Cellular providers can currently derive location information by
triangulating the location of the base station and antenna nearest to
the caller. According to Bell Labs researcher Giovanni Vannucci, that
method can only get a fix on someone within a few thousand square feet,
or up to six square miles in rural areas.

Bell Labs researchers improved on the method using Global Positioning
System (GPS) technology. Other GPS technologies exist for locating cell
calls, but, Vannucci said, "Our technology achieves substantial
improvements."

The technique places high-powered GPS receiver units throughout a
wireless network. The stations transmit key information, including
estimated time of the signal's arrival at the satellite, to nearby
wireless handsets.

Carriers can equip new handsets with scaled-down GPS units. Bell Labs
discovered that it was possible to offload time-difference calculations
from the phones into the GSP base stations.

According to Bell Labs, the technology will allow cellular network
operators to easily meet a October 2001 Federal Communications
Commission mandate requiring that all cell phones be able to locate 911
dialers.

The company is pursuing standardization of its geolocation technology as
a cellular industry standard.

David Sobel, general counsel for the Electronic Privacy Information
Center, outlined the privacy concerns over location technology in
general.

"We are very concerned about the deployment and requirement of
location-tracking information in the cellular networks," Sobel said.

"The concern is that, once the capability is developed and the
architecture for location tracking is in place, it will be very
difficult to restrict use of that capability only to emergency
situations."

Sobel said that once the capability exists, cell-phone firms will face
pressure from both commercial industry and from the government to
routinely track location and record the whereabouts of people when they
use their cell phones.

With significant privacy issues involved, Sobel said any wide deployment
should come with strict guidelines for the circumstances under which the
capability can be used.

Related Wired Links:
Y2K SOS on 911
16.Nov.98
Lucent Venture to Speed 911 Response
28.Apr.98
'E911' Turns Cell Phones into Tracking Devices
6.Jan.98
FCC Orders 911 Access for All Cellular Users
2.Dec.97


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-----
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