C04-Wireless_Telecommunication_Systems

C04-Wireless_Telecommunication_Systems - Mobile...

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4.1 Prof. Dr.-Ing. Jochen H. Schiller www.jochenschiller.de MC - 2011 Mobile Communications Chapter 4: Wireless Telecommunication Systems Market GSM DECT TETRA UMTS/IMT-2000 LTE
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4.2 Prof. Dr.-Ing. Jochen H. Schiller www.jochenschiller.de MC - 2011 Mobile phone subscribers worldwide year Subscribers [million] 0 200 400 600 800 1000 1200 1400 1600 1996 1997 1998 1999 2000 2001 2002 2003 2004 approx. 1.7 bn GSM total TDMA total CDMA total PDC total Analogue total W-CDMA Total wireless Prediction (1998) 2011: >4.8 bn!
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4.3 Prof. Dr.-Ing. Jochen H. Schiller www.jochenschiller.de MC - 2011 Development of mobile telecommunication systems 1G 2G 3G 2.5G IS-95 cdmaOne IS-136 TDMA D-AMPS GSM PDC GPRS IMT-DS UTRA FDD / W-CDMA EDGE IMT-TC UTRA TDD / TD-CDMA cdma2000 1X 1X EV-DV (3X) AMPS NMT IMT-SC IS-136HS UWC-136 TD-SCDMA CT0/1 CT2 IMT-FT DECT CDMA TDMA FDMA IMT-MC cdma2000 1X EV-DO HSPA 3.9G 4G LTE advanced
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4.4 Some press news… 16th April 2008 : The GSMA, the global trade group for the mobile industry, today announced that total connections to GSM mobile communications networks have now passed the 3 Billion mark globally. The third billion landmark has been reached just four years after the GSM industry surpassed its first billion, and just two years from the second billionth connection. The 3 Billion landmark has been surpassed just 17 years after the first GSM network launch in 1991. Today more than 700 mobile operators across 218 countries and territories of the world are adding new connections at the rate of 15 per second, or 1.3 million per day . 11 February 2009 : The GSMA today announced that the mobile world has celebrated its four billionth connection , according to Wireless Intelligence, the GSMA’s market intelligence unit. This milestone underscores the continued strong growth of the mobile industry and puts the global market on the path to reach a staggering six billion connections by 2013 . By 2014 3.4bn people will have broadband , 80% mobile! Prof. Dr.-Ing. Jochen H. Schiller www.jochenschiller.de MC - 2011
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4.5 Prof. Dr.-Ing. Jochen H. Schiller www.jochenschiller.de MC - 2011 How does it work? How can the system locate a user? Why don’t all phones ring at the same time? What happens if two users talk simultaneously? Why don’t I get the bill from my neighbor? Why can an Australian use her phone in Berlin? Why can’t I simply overhear the neighbor’s communication? How secure is the mobile phone system? What are the key components of the mobile phone network?
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4.6 Prof. Dr.-Ing. Jochen H. Schiller www.jochenschiller.de MC - 2011 GSM: Overview GSM formerly: Groupe Spéciale Mobile (founded 1982) now: Global System for Mobile Communication Pan-European standard (ETSI, European Telecommunications Standardisation Institute) simultaneous introduction of essential services in three phases (1991, 1994, 1996) by the European telecommunication administrations (Germany: D1 and D2) seamless roaming within Europe possible Today many providers all over the world use GSM (219 countries in Asia, Africa, Europe, Australia, America) more than 4,2 billion subscribers in more than 700 networks
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This note was uploaded on 09/04/2011 for the course IT 100 taught by Professor Rickdas during the Spring '11 term at University of Mumbai.

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C04-Wireless_Telecommunication_Systems - Mobile...

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