This chapter is designed to provide the student with an
introduction to mobile telecommunications and an overview of
the GSM standard. It introduces the main system components,
the network structure and basic terminology used.
Be familiar with the development of 2G mobile systems. Describe the architecture of a GSM network. Appreciate the main services provided within a GSM network. Understand the various facets of the GSM air interface including, access structures, frequency allocations, physical and logical channels.
This book is a training document and contains simplifications.
Therefore, it must not be considered as a specification of the
The contents of this document are subject to revision without
notice due to ongoing progress in methodology, design and
Ericsson assumes no legal responsibility for any error or damage
resulting from the usage of this document.
This document is not intended to replace the technical
documentation that was shipped with your system. Always refer
to that technical documentation during operation and
Our first chapter puts LTE into its historical context, and lays out its requirements and key
technical features. We begin by reviewing the architectures of UMTS and GSM, and
by introducing some of the terminology that the two systems use. We then summarize
the history of mobile telecommunication systems, discuss the issues that have driven the
development of LTE, and show how UMTS has evolved first into LTE and then into an
enhanced version known as LTE-Advanced. The chapter closes by reviewing the standardization
process for LTE....
The third generation (3G) mobile communication system is the next big thing in the world of mobile telecommunications. The first generation included analog mobile phones [e.g., Total Access Communications Systems (TACS), Nordic Mobile Telephone (NMT), and Advanced Mobile Phone Service (AMPS)], and the second generation (2G) included digital mobile phones [e.g., global system for mobile communications (GSM), personal digital cellular (PDC), and digital AMPS (D-AMPS)].
This book focuses on issues related to multiple access for cellular mobile communications,
with a specific interest in access arbitration through multiple access protocols situated at
the lower sub-layer of the second OSI layer, namely the medium access control (MAC)
In this chapter, first an introduction to cellular mobile communication systems is
The information in this document is subject to change without notice and describes only the
product defined in the introduction of this documentation. This documentation is intended for the use of Nokia Siemens Networks customers only for the purposes of the agreement under which the document is submitted, and no part of it may be used, reproduced, modified or transmitted in any form or means without the prior written permission of Nokia Siemens Networks.
TOWARDS ‘ALL IP’ AND SOME CONCLUDING REMARKS
This concluding chapter provides ﬁrst an introduction to some of the planned release 5 enhancements to UMTS and the GPRS/EDGE RAN (GERAN). These can be seen as the ﬁrst step towards ‘all IP’. The challenges when having to deliver real-time IP services over an air interface, in particular voice over IP services, are summarised and possible solutions to achieve spectrum efﬁciencies similar to those of optimised cellular voice services are outlined.