Tài liệu GSM SYSTEM SURVEY ppt

GSM SYSTEM SURVEY STUDENT TEXT EN/LZT 123 3321 R2C GSM System Survey DISCLAIMER This book is a training document and contains simplifications. Therefore, it must not be considered as a specification of the system. The contents of this document are subject to revision without notice due to ongoing progress in methodology, design and manufacturing. 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 maintenance. This document was produced by Ericsson Radio Systems AB. • It is used for training purposes only and may not be copied or reproduced in any manner without the express written consent of Ericsson. • This document number, EN/LZT 123 3321, R2C supports course number LZU 108 852. EN/LZT 123 3321 R2C Copyright © 1999 by Ericsson Radio Systems AB Revision Record REVISION RECORD Date Revision No. Chapters Affected EN/LZT 123 3321 R2C 96/09/02 R1A All 97/07/04 R1B All 97/09/09 R1C All 98/05/27 R2A All 98/11/30 R2B All 99/08/30 R2C 1 - 7 and 9 GSM System Survey EN/LZT 123 3321 R2C l l a a n n k k B B i i o o n n a a ll l l y y t t n n e e t t n n I I Table of Contents GSM System Survey Table of Contents Topic Page EN/LZT 123 3321 R2C -i - 1. Introduction to Mobile Telecommunications and GSM 1 2. Overview of Ericsson’s GSM Systems 25 3. Wireless Concepts 37 4. Channel Concepts 71 5. Introduction to AXE 83 6. Switching System 111 7. Base Station System 131 8. Mobile Stations 155 9. Traffic Cases 181 10. Cell Planning 211 11. Operation and Maintenance Systems 231 12. Subscriber Services 255 13. Charging and Accounting 265 14. Appendix A: Mobile Intelligent Network Services 277 15. Appendix B: Data Services 293 16. Appendix C: Case Study: New Telerica’s GSM networks 301 17. Appendix D: The Future of GSM 317 18. Appendix E: Ericsson’s Customer Services 325 19. Index 329 GSM System Survey -ii- EN/LZT 123 3321 R2C l l a a n n k k B B i i o o n n a a ll l l y y t t n n e e t t n n I I Introduction to Mobile Telecommunications and GSM Chapter 1 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. OBJECTIVES: Upon completion of this chapter the student will be able to: • Describe the concept of a standard for mobile communications • Describe the history of GSM development • Describe the philosophy of GSM as a global common standard • Describe the GSM network components • Describe the GSM geographical network structure • Describe the GSM frequency bands • Describe the terminology used in GSM traffic cases GSM System Survey EN/LZT 123 3321 R2C l l a a n n k k B B i i o o n n a a ll l l y y t t n n e e t t n n I I 1 Introduction to Mobile Telecommunications and GSM EN/LZT 123 3321 R2C – i – 1 Introduction to Mobile Telecommunications and GSM Table of Contents Topic Page MOBILE TELEPHONY 1 HISTORY OF WIRELESS COMMUNICATION 1 MOBILE STANDARDS 3 ERICSSON IN MOBILE 5 GLOBAL SYSTEM FOR MOBILE COMMUNICATION (GSM) 6 HISTORY OF GSM 6 GSM SPECIFICATIONS 9 GSM PHASES 10 GSM NETWORK COMPONENTS 12 SWITCHING SYSTEM (SS) COMPONENTS 14 BASE STATION SYSTEM (BSS) COMPONENTS 16 NETWORK MONITORING CENTERS 16 MOBILE STATION (MS) 17 GSM GEOGRAPHICAL NETWORK STRUCTURE 18 CELL 18 LOCATION AREA (LA) 18 MSC SERVICE AREA 19 PLMN SERVICE AREA 19 GSM SERVICE AREA 20 GSM FREQUENCY BANDS 22 GSM 900 22 GSM 1800 22 GSM 1900 22 KEY TERMS 23 GSM System Survey – ii – EN/LZT 123 3321 R2C l l a a n n k k B B i i o o n n a a ll l l y y t t n n e e t t n n I I [...]... Table 1-5 GSM Recommendations The GSM 1800 section is written as a delta part within the GSM recommendations, describing only those differences between GSM 900 and GSM 1800 GSM 1900 is based on GSM 1800 and has been adapted to meet the American National Standards Institute (ANSI) standard EN/LZT 123 3321 R2C –9– GSM System Survey GSM PHASES In the late 1980s, the groups involved in developing the GSM standard... sample network EN/LZT 123 3321 R2C – 21 – GSM System Survey GSM FREQUENCY BANDS As GSM has grown worldwide, it has expanded to operate at three frequency bands: 900, 1800 and 1900 GSM 900 GHz 0.8 0.9 1.0 GSM 1800 GSM 1900 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 Figure 1-10 GSM frequency bands GSM 900 The original frequency band specified for GSM was 900 MHz Most GSM networks worldwide use this band In... Standard Ericsson Product NMT 450 AMPS TACS NMT 900 GSM D-AMPS GSM 1800 PDC PCS 1900 (using GSM) PCS 1900 (using DAMPS) CMS 45 CMS 8800 CMS 8810 CMS 89 CME 20 CMS 8800-D CME 20 CMS 30 CMS 40 CMS 8800-D Table 1-3 Ericsson’s cellular systems EN/LZT 123 3321 R2C –5– GSM System Survey GLOBAL SYSTEM FOR MOBILE COMMUNICATION (GSM) HISTORY OF GSM This history of GSM is outlined in the following table: Date Activity... with GSM 1800, GSM 1900 and the Digital Enhanced Cordless Telecommunications (DECT) standard Priorities and time schedules for new features and functions depend primarily on the interest shown by operating companies and manufacturers and technical developments in related areas EN/LZT 123 3321 R2C – 11 – GSM System Survey GSM NETWORK COMPONENTS The GSM network is divided into two systems Each of these systems... countries and there are over 70 million GSM subscribers world-wide GSM subscribers account for 31% of the world’s mobile market Table 1-4 GSM Milestones EN/LZT 123 3321 R2C –7– GSM System Survey Figure 1-1 GSM worldwide (indicated by darker areas) F Did you know? The countries with the highest numbers of GSM subscribers are the United Kingdom and Italy Because GSM provides a common standard, cellular... service areas, one for each mobile operator’s network EN/LZT 123 3321 R2C – 19 – GSM System Survey GSM SERVICE AREA The GSM service area is the entire geographical area in which a subscriber can gain access to a GSM network The GSM service area increases as more operators sign contracts agreeing to work together Currently, the GSM service area spans dozens of countries across the world from Ireland to Australia... version of GSM 900 can be used, which provides extra network capacity This extended version of GSM is called E -GSM, while the primary version is called P -GSM GSM 1800 F Did you know? This was originally named Digital Cellular System (DCS) 1800 MHz In 1997 it was renamed GSM 1800 In 1990, in order to increase competition between operators, the United Kingdom requested the start of a new version of GSM adapted... network The two systems are: • Switching System (SS) • Base Station System (BSS) In addition, as with all telecommunications networks, GSM networks are operated, maintained and managed from computerized centers Switching System SS AUC VLR Other networks GMSC HLR EIR MSC Base Station System BSS BSC NMC and OMC Signaling transmission Call connections and signaling transmission BTS MS Figure 1-3 System model... Year 1981 Standard NMT 450 Mobile Telephone System Nordic Mobile Telephony 1983 AMPS Advanced Mobile Phone System 1985 TACS 1986 NMT 900 Total Access Communication System Nordic Mobile Telephony 1991 GSM 1991 D-AMPS 1992 GSM 1800 Global System for Mobile communication PDC Personal Digital Cellular PCS 1900 Personal Communication Services 1994 1995 Global System for Mobile communication Digital-AMPS... EN/LZT 123 3321 R2C Overview of Ericsson’s GSM Systems Chapter 2 This chapter is designed to provide the student with an overview of Ericsson’s GSM systems: CME 20 and CMS 40 OBJECTIVES: Upon completion of this chapter the student will be able to: • Describe the CME 20/CMS 40 network elements and their main functionality t io e n na y lllly Bl n a k In t GSM System Survey EN/LZT 123 3321 R2C . 19 PLMN SERVICE AREA 19 GSM SERVICE AREA 20 GSM FREQUENCY BANDS 22 GSM 900 22 GSM 1800 22 GSM 1900 22 KEY TERMS 23 GSM System Survey – ii – EN/LZT 123. MOBILE 5 GLOBAL SYSTEM FOR MOBILE COMMUNICATION (GSM) 6 HISTORY OF GSM 6 GSM SPECIFICATIONS 9 GSM PHASES 10 GSM NETWORK COMPONENTS 12 SWITCHING SYSTEM (SS)