Subject:  Cell phone location technology (Kelley)....
Date:     Sun, 15 Aug 1999 021107 -0500 (CDT)
From:     "Roy L. Beavers" 
To:       emfguru 
--------------------------------------------------

---------- Forwarded message ----------
Date: Fri, 13 Aug 1999 16:37:52 -0700
From: Libby Kelley 
To: Rbeavers@llion.org
Cc: BPCurry@mcs.com
Subject: cell phone location technology comes to within 55 meters

Cell-Loc Says Mobile Location Trials
Successful

August 13, 1999

CALGARY, ALBERTA, CANADA, Newsbytes via NewsEdge Corporation :
Cell-Loc, a company that specializes in cellular locationtechnology,
has revealed that its 90-day trial of its Cellocate system for CDMA
(code division multiplex access) wireless networks has been
successful.

The firm says that its Cellocate system was trialed in Canada and the
results have exceeded expectations, with location information on test
calls allowing dispatchers to pinpoint the mobile to within 55 meters.

As reported previously by Newsbytes, the Cellocate system is billed
as complying with Phase II E911 regulations from the Federal
Communications Commission (FCC), which requires cellular telephone
carriers to provide accurate location information on all 911 calls made
by a cellular phone by the year 2001.

The Cellocate system is a network-based wireless location technology
that uses time difference of arrival (TDOA) to locate the position of a
cellular telephone.

The product was researched and developed at the University of
Calgary in Canada over six years, then transferred into industry by
the founding of Cell-Loc in 1995.

The analog version of the system was then tested over a three-year
period on Telus Mobility's network in Calgary. The CDMA version of
the system was installed on the carrier's network in the spring of this
year, Newsbytes notes.

As a result of its CDMA trials, Cell-Loc says that it is filing several
patent applications.

Back in April of this year, Dr. Michel Fattouche, Cell-Loc's co-
founder, told Newsbytes that the key difference between the CDMA
and the analog versions of the Cellocate technology is that it
addresses the issue of CDMA power control.

The problem with location systems using CDMA is that the power
output from a mobile varies, whereas, with analog networks, the
power output is usually steady.

This is because, on a CDMA network, the network itself has the ability
to control the power output of a mobile, so as to extend the battery
life of the handset, as well as to ensure maximum effective reuse of
available cellular channels.

Cellocate on CDMA, therefore, uses a number of systems to ensure
that the triangulation of the mobile takes into account the power
output of the mobile.

Dr. Fattouche said in April that the plan was to continue testing the
CDMA Cellocate system throughout the rest of the year. This testing
appears to be on target, ready for a 2000 commercial introduction,
Newsbytes notes.

Ultimately, Fattouche, said, the firm aims to refine its Cellocate
technology to allow the location of PCS (personal communications
services) and CDMA mobiles to within 10 meters.

"We see this as a very realistic goal given that we have already
achieved accuracies as good as 15 meters on many occasions.
Cell-Loc is initiating a second phase CDMA trial with the intent
towards achieving this accuracy in the very near future," he said.

Cell-Loc's Web site is at http://www.cell-loc.com .

Reported by Newsbytes.com, http://www.newsbytes.com .

(19990812/Press Contact: Cassy Weber, Cell-Loc 403-569-0760
/WIRES TELECOM, BUSINESS/)

<>

[Copyright 1999, NewsBytes]


                                   Copyright © 1999, NewsPage.com, Inc.
                                       No redistribution allowed.
Libby Kelley
Executive Director
Ad Hoc Associaiton of Parties concerned About the FCC's Radiofrequency
Radiation Health and Safety Rules
aka Council on Wireless Technology Impacts


Archive provided courtesy of WaveGuide, http://www.wave-guide.org
Reprinted with permission of Roy Beavers, http://www.emfguru.com