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“IMT” or “International Mobile Telecommunications”
is the umbrella term
for mobile systems and services. It includes both 3G and 4G. There are
various options and intermediate points in transitioning from 2G to 3G
and 4G that are labelled 2.5G, 3.5G, 3.9G, etc. These “fractional” Gs
are not formally recognized in standards but form part of the business
positioning and marketing strategies of operators and manufacturers.
“IMT-2000” is
the term used for
third generation
(3G) systems aimed at using the nominal 2 GHz frequency band with
standards developed and products deployed in approximately year 2000,
and providing smooth evolution paths to 3G from the various widely
deployed existing 2G mobile networks. For more information, go to
Newcomer.
“IMT
Advanced” is the
evolution of the terminology to reflect the addition of new radio
technologies and advanced network infrastructure capabilities for the
fourth generation
(4G). For more information, go to
Newcomer.
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