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GSM Technology for engineers

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. | Copyright 2002 AIRCOM International Ltd All rights reserved AIRCOM Training is committed to providing our customers with quality instructor led Telecommunications Training. This documentation is protected by copyright. No part of the contents of this documentation may be reproduced in any form or by any means without the prior written consent of AIRCOM International. Document Number P TR 003 K011 4.4 This manual prepared by AIRCOM International Grosvenor House 65-71 London Road Redhill Surrey RH1 1LQ ENGLAND Telephone 44 0 1737 775700 Support Hotline 44 0 1737 775777 Fax 44 0 1737 775770 Web http www.aircom.co.uk GSM TECHNOLOGY FOR ENGINEERS Ä AIRCOM F INTERNATIONAL Table of Contents 1. Introduction to Cellular Systems 1.1 Introduction.1 1.2 Cellular Radio.2 1.3 1st Generation Cellular Systems.3 1.4 2nd Generation Cellular Systems.5 1.5 GSM Development and Characteristics.7 1.6 Cellular Systems Subscriber Distribution.8 1.7 2.5G Characteristics.9 2. Architecture Overview 2.1 Introduction.11 2.2 GSM Identifiers.12 2.3 General Architecture Overview.13 2.4 The GSM Mobile Station MS .14 2.5 The Base Station Subsystem BSS .16 2.6 The Network Switching Subsystem NSS .17 2.7 GSM Interfaces.22 Self-Assessment Exerecises.27 3. GSM Services 3.1 Introduction .29 3.2 GSM Bearer Services.30 3.3 Teleservices . 32 3.4 Supplementary Services. 33 3.5 Circuit-Switched Data CSD Services . 34 3.6 Short Message Service . 35 3.7 USSD Data Services.37 Self-Assessment Exerecises . 41 4. The Air Interface 4.1 Introduction . 43 4.2 GSM Frequency Spectrum Allocation.44 4.3 GSM Multiple Access Techniques.50 4.4 GSM Air Interface Channels.52 4.5 Frames and Multiframes . 56 Self-Assessment Exercises . 63 5. Protocols 5.1 Introduction . 65 5.2 The ISO 7-Layer OSI Model.66 5.3 GSM Protocols Overview.67 5.4 GSM Transmission Protocols.69 5.5 GSM Signalling Protocols.71 5.6 GSM Air Um Interface Protocols . 73 5.7 GSM A-bis Interface Protocols . 75 5.8 The GSM A Interface Protocols. 78 6. Speech and