7/25/2019 Cellular Mobile Networks

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Introduction

1.1 Evolution Process

Cellular mobile networks made unforeseen development in the

telecommunications

eld during the last decade of the twentieth century and the beginning of

the twenty-rst. obile communications are less pragmatic! and continue to

demand higher bandwidths and di"erent multimedia services for the end users.

In addition! the Internet Protocol #IP$ is technology that started to penetrate the

world in the 1%%&s! as a result of the development of the 'orld 'ide 'eb

#'''$ and the populari(ation of electronic mail #e-mail$ communication on

the Internet. )he 'eb browser was the rst widespread application to provide

di"erent multimedia services! such as browsing te*t and images! and streaming

audio and video. )echnological development in the 1%%&s and +&&&s made

computers smaller and smaller! thus allowing users to carry them while moving.

)he integration of wireless cellular networks and the Internet becomes a foreseen

scenario! one that is being reali(ed from the , standardi(ation process and

initiatives for future generations mobile networks #e.g.! and beyond$! as well

as from the introduction of mobility to the Internet! which was initially created

for hosts attached to interconnected wired local computer networks.

Considering the development of telecommunications technology! one

may distinguish among three key events #i.e.! revolutions$/

1. )he introduction of automatic telephone e*change #at the end of the

nineteenth century$0

+. )he digitali(ation of telecommunications systems from the 1%&s to

the 1%%&s0