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Introduction
Historical Background
GSM
EDGE
WCDMA
UMTS
The Future
Final Thoughts
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Key Benefits of the
Layered Architecture
The key principle of
modern networking is the separation of network functionality into
independent layers; this is also true in the tele and datacoms industry.
The ‘layered’ thinking is also a very fundamental and visible aspect in
a number of standardization initiatives and industry forums, such as
Multiservice Switching Forum, led by several of the largest operators
and manufactures.
3G mobile communication systems are designed with these principles in
mind, and hence offer a number of advantages and possibilities. Special
attention needs to be put on meeting the requirements for
time-to-market, low cost of ownership, openness and future evolution
towards an “all-IP” solution.
Key characteristics :
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Offers an open and
versatile architecture capable of meeting the current and future
demand in a fast changing telecommunications environment.
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Provides and inherent
flexibility for coping with growth and/or changing traffic patterns
and traffic mixes.
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Independence between
layers allows each layer to evolve independently.
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Provides great
transport flexibility and allows different transport technologies,
both existing and new. To be deployed without impacting the control
or services/application layers.
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Allows common
transport arrangements for multi-services network.
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Allows access
independent and seamless services through a common
service/applications layer.
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Provides efficient use
of network resources.
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Relies on proven and
stable protocols and design.
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Allow a very flexible
re-use of investments in the GSM infrastructure.
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