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Springer, Berlin, Heidelberg

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10.1016/0022-3115(79)90510-5

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Mobile DRM Introduction The Need for Mobile DRM

Authors: Frank Hartung
Publish Date: 2003
Volume: , Issue: , Pages: 138-149
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Abstract

During the last years the mobile cellular networks have evolved from pure voice telephony networks to universal data networks The socalled first generation of mobile networks that means the analog systems like for example AMPS or TACS provided circuit switched pointtopoint connections between two users for voice services The second generation mainly known through the GSM system provides additional capabilities for pointtopoint data transmission at comparably low bitrates However with the evolution of second generation systems visible for example in the GPRS technology and with the introduction of 3G systems like UMTS Internet technology like the use of IP protocols has been introduced into mobile networks together with radio technology that provides higher data rates for the end user Thus evolved 2G and 3G systems offer possibilities and services previously only known from the Internet and extend Internet access to mobile users Mobile users now have access to Internet services like email web browsing and to mobile services like multimedia messaging MMS MMS also allows exchange of messages to and from the Internet In other words Internet services become usable for mobile users and mobile services like MMS become usable for Internet users Thus the Internet really extends to mobile users


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