GPRS for Mobile Internet
This book helps you understand how the GPRS system is used as a major technology building block for the emerging mobile Internet; the book
also provides you with detailed coverage of a wide range of important topics.
TABLE OF CONTENTS GPRS for Mobile Internet
Chapter 1: Introduction to the GSM System
This chapter provides an overview of the GSM cellular system, with a focus on the radio interface. The purpose is not to give a detailed description of the many features supported by the system, but to summarize the elementary concepts of GSM, as an aid to reader comprehension of the subsequent chapters. In-depth presentation of the GSM system can be found in [1, 2].
1.1 Introduction
1.1.1 Birth of the GSM System
The first step in the history of GSM development was achieved back in 1979, at the World Administrative Radio Conference, with the reservation of the 900-MHz band. In 1982 at the Conference of European Posts and Telegraphs (CEPT) in Stockholm, the Groupe Sp cial Mobile was created, to implement a common mobile phone service in Europe on this 900-MHz frequency band. Currently the acronym GSM stands for Global System for Mobile Communication; the term "global" was preferred due to the intended adoption of this standard in every continent of the world.
The proposed system had to meet certain criteria, such as:
-
Good subjective speech quality (similar to the fixed network);
-
Affordability of handheld terminals and service;
-
Adaptability of handsets from country to country;
-
Support for wide range of new services;
-
Spectral efficiency improved with respect to the existing first-generation analog systems;
-
Compatibility with the fixed voice network and the data networks such as ISDN;
-
Security of transmissions.
Digital technology was chosen to ensure call quality.
The basic design of the system was set by 1987, after numerous discussions...
Copyright Artech House 2003 under license agreement with Books24x7
