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| GeoCommunity Mailing List |
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| Subject: | Re: GISList: CDMA - GIT |
| Date: |
05/06/2002 09:53:06 AM |
| From: |
Pat Waggaman |
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GIS List,
My comments are directed to the strategic issue of positioning report data=
=20
transmission, and reflect the perspective of my company which is an Orbcomm=
=20
satellite based position report supplier. It appears that Vivek is=20
fascinated with the technology, and is not looking at the competitive=20
environment.
Cellular Case
This is technology with relatively expensive infrastructure=20
costs. Cellular towers and switching stations only are extended into=20
population groups where there is a high likelihood of sufficient revenue=20
being generated to justify the capital cost of the necessary infrastrucutre.
While cellular, once it overcomes the problem of "dropped connections" can=
=20
be expected to dominate urban positioning for some years, probably followed=
=20
by some sort of WLL (wireless local loop) technology: it will never have=20
the user base to push its towers out into the hinterlands. Long distance,=
=20
non-urban positioning will be a satellite market for many years to=20
come. Which satellite system will dominate is another - and very=20
interesting - question.
CDMA case
This dawning technology promises to expand bandwidth, not very necessary=20
for short positioning messages (our proprietary reports are 6 bytes for=20
Lat, Long, Velocity, Course & Date/Time). Similarly this technology=20
promises to be significantly more expensive per km2 covered than the=20
extension of cellular GSM / PCS networks.
Conclusions
The adoption of CDMA for positioning will occur, it will slowly move into=
=20
urban areas for vehicles which are exclusively used in urban areas. Use of=
=20
CDMA positioning technology will not begin until a "critical mass" of CDMA=
=20
infrastructure has been built.
Use of the widest distributed network, which BOTH covers the mobile range=
=20
of the target purchaser AND has the lowest costs will continue to point=20
toward the network of choice for positioning reports.
So, just because it is a neat technology does not mean that it will expand,=
=20
network coverage will be more important in the intermediate term and thus=
=20
drive "local" business toward the cellular network and "long-range"=20
business toward the satellite networks.
Cheers,
Pat
Thos. E. Waggaman, III (Pat)
Director
Marine Imaging Systems S.A.
Ave Borgo=F1o 22.090
Caleta Higuerillas
Vina del Mar
Chile
waggaman@marimsys.com
Tel: 56 32 815005
FAX: 56 32 815243
http://www.marimsys.com
At 08:39 AM 4/19/02, you wrote:
>Dear Friends:
>There is a wave of CDMA / WLL technology in the telecom sector. There has
>been a lot of technological revolutions happening within a short span of
>time. I was wondering if the CDMA / WLL can be used in the Location Based
>Services and also for getting cheaper connectivity for navigation in the
>Vehicle tracking System.
>
>I am sure there will be lot being done as I am writing this message. Could
>any one be kind enough to share their findings and knowledge? Look forwa=
rd
>to you responses then and let us keep the GIT industry up with the
>revolution=85. Of course Gleen does the marvellous task networking=85
>
>VIVEK
>
>*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
>Vivek Mapari
>Manager - Geospatial Solutions
>Datamatics Technologies Ltd.
>
>Tel.: +91-22-834 3634
>Email: vivek_mapari@datamatics.com
>
>
>
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