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Mobile Telephone
History |
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Introduction |
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| Digital wireless and cellular roots
go back to the 1940s when commercial mobile telephony began.
Compared with the furious pace of development today, it may
seem odd that mobile wireless hasn't progressed further in the
last 60 years. Where are our video watch phones? There were
many reasons for this delay but the most important ones were
technology, cautiousness, and federal regulation. |
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| As the loading coil and vacuum tube
made possible the early telephone network, the wireless revolution
began only after low cost microprocessors and digital switching
became available. The Bell System, producers of the finest landline
telephone system in the world, moved hesitatingly and at times
with disinterest toward wireless. Anything AT&T produced had
to work reliably with the rest of their network and it had to
make economic sense, something not possible for them with the
few customers permitted by the limited frequencies available
at the time. Frequency availability was in turn controlled by
the Federal Communications Commission, whose regulations and
unresponsiveness constituted the most significant factors hindering
radio-telephone development, especially with cellular radio,
delaying that technology in America by perhaps 10 years. |
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| In Europe and Japan, though, where
governments could regulate their state run telephone companies
less, mobile wireless came no sooner, and in most cases later
than the United States. Japanese manufacturers, although not
first with a working cellular radio, did equip some of the first
car mounted mobile telephone services, their technology equal
to whatever America was producing. Their products enabled several
first commercial cellular telephone systems, starting in Bahrain,
Tokyo, Osaka, Mexico City. |
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| Source:http://telecom.about.com |
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