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WELCOME TO THE SEMINAR

WELCOME TO THE SEMINAR. GLOBAL SYSYEM FOR MOBILES. Presenter : ANIKET DANGI, EC-A 3rd YEAR. Derived from Groupe Spécial Mobile Digital Cellular Telephone Technology Based on TDMA Operates on 900 MHz In India Operates on 1800 MHz In Europe Operates on 1900 MHz In USA. DEFINITION.

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WELCOME TO THE SEMINAR

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  1. WELCOME TO THE SEMINAR

  2. GLOBAL SYSYEM FOR MOBILES Presenter : ANIKET DANGI, EC-A 3rd YEAR

  3. Derived from Groupe Spécial Mobile • Digital Cellular Telephone Technology • Based on TDMA • Operates on 900 MHz In India • Operates on 1800 MHz In Europe • Operates on 1900 MHz In USA DEFINITION

  4. Developed by CEPT,a European group in June 1982 • Developed to offer • Pan-European roaming • Interaction with ISDN HISTORY

  5. Mobile unit initialization • Mobile originated call • Network originated call • Call termination • Handoff procedure OPERATION OF CELLULAR SYSTEMS

  6. Mobile Station [MS] • Base Station Subsystem [BSS] • Network and switching subsystem [NSS] GSM ARCHITECTURE

  7. It includes • Mobile equipment [ME] • Subscriber identity module [SIM] MOBILE STATION A SIM for Bell Mobility (Canada)

  8. It consists of • Base transceiver station • Base station controller • Transcoder rate adaption unit BASE STATION SUBSYSTEM OSS MS BSS NSS

  9. NSS management consists of • Mobile service switching center • Interworking function [IWF] • Gateway MSC NETWORK AND SWITCHING SUBSTATION

  10. STRUCTURE OF GSM NETWORK

  11. It is divided into • Speech • It uses • Regular pulse excitation [RPE] • Linear prediction coding [LPE] • Data service • Modulation TRANSMISSION

  12. Physical channels • TCH/F • TCH/H • TCH/8 • Logical channels • Common channels • Downlink channels • Uplink channels • Signaling channels GSM CHANNELS AND CHANNEL MODES

  13. 3G is the current GSM generation • Based on the International Telecommunication Union (ITU)standards • 3G uses .5 MHz channel carrier • Supports greater numbers of voice and data customers at lower cost GSM : CURRENT GENERATION

  14. A GSM (TDMA) mobile has a SIM card, which provides more functionality • CDMA • high communication security • high carrier efficiency • smaller phones, low power requirement • Talk range • GSM : 35 km • CDMA : 110 km GSM AND CDMA : A COMPARISION

  15. INTERACTIVE SESSION

  16. THANK YOU

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