V_UH_So05Network Protocols and Architectures of Mobile Radio SystemsAn introductory lecture for pre- and postgraduate students of Electrical Engineering. GSM, WAP, GPRS, UMTSThe Motivation (continued)“GSM with its enhancements (GPRS,HSCSD,WAP,CAMEL etc.) is the biggest technical system ever designed by mankind” (source GSM world conference 2000). In terms of : Mobiles produced per year: about 500 Mio. devices, more items than watch industry. Technological complexity: more R&D hours than Apollo, ISS, .. Size/Investment: in terms of invested in infrastructure.4/19/2005U.A.Hermann: GSM14/19/2005U.A.Hermann: GSM3The Motivation The GSM Association’s membership consists of more than 690 second (400+ ) and third generation wireless network operators and key manufacturers and suppli……