الفهرس 
Mobile Radio and Cellular SystemsOnly 14 pages are availabe for public view
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Abstract
The development trend 111 telecommunications is driven by user
service requirements asking for access to a diversified range of
personalized set of services to anyone, anywhere, and anytime. Borders
between telecommunications, information technology and entertainment
services are disappearing. In second generation mobile systems, operators
are offering voice services to their mobile subscribers as well as simple
data services as short message service (SMS). However, mobile users are
no more satisfied with these services. Mobile users want to make voice
calls, send and receive e-mail, surf the internet, download files, and even
make video conferences at high rates. All these users demands, can be
satisfied by a new generation of mobile systems, third generation, which
can give the user access to the network via channels supporting high
rates, and that can support both voice and data traffic .
In this thesis, a new core network for third generation mobile
systems is proposed. The network will be called Public IP Mobile
Network (PIMN). The architecture of the network is hierarchical
consisting of three layers. The network is packet switched. Its entities
used are IP switches and supports both voice and data traffic. IP switches
are devices capable of routing packets like routers but at higher rates.
Routing in IP switches is done by hardware ASICS and not by software
as in routers.
The network protocol used is the Internet Protocol (IP). IP is
deployed successfully in the Internet and supports a wide variety of
applications. In this thesis, a new dynamic IF addressing scheme is
proposed. It solves the problem of having a number of IP addresses less
the number of subscribers.
The IP switches are placed in three layers. The first layer, closest to
the users, is the Local IP switches. It represents the cells. The second