This figure is from the website of International Telecommunication Union:http://www.itu.int/itunews/issue/2003/06/fig-1.jpg
From the early analog mobile generation (1G) to the last implemented third generation (3G) the paradigm has changed. The new mobile generations do not pretend to improve the voice communication experience but try to enable the users to communicate at any time and everywhere and to provide them with a new set of services.
The growth of the number of mobile subscribers over the last years led to a saturation of voice-oriented wireless telephony. According to International Telecommunication Union Statistics, from a number of 214 million subscribers in 1997 to 1.162 millions in 2002, it is predicted that by 2010 there will be 1700 million subscribers worldwide. It is now time to explore new demands and to find new ways to extend the mobile concept.
The first steps have already been taken by the 2.5G, which gave users access to a data network (e.g. Internet access, MMS – Multimedia Message Service). However, users and applications demanded more communication power. As a response to this demand a new generation with new standards has been developed - 3G. One 3G network exists in commercial use today has been deployed in Japan in 2001 using international standard IMT-2000, with great success.
Benefiting from 3G constant delays, many new mobile technologies were deployed with great success (e.g. Wi-Fi). Now, all this new technologies (e.g. UMTS, Wi-Fi, Bluetooth) claim for a convergence that can only be achieved by a new mobile generation. This new mobile generation to be deployed must work with many mobile technologies while being transparent to the final user.
The growth of the number of mobile subscribers over the last years led to a saturation of voice-oriented wireless telephony. According to International Telecommunication Union Statistics, from a number of 214 million subscribers in 1997 to 1.162 millions in 2002, it is predicted that by 2010 there will be 1700 million subscribers worldwide. It is now time to explore new demands and to find new ways to extend the mobile concept.
The first steps have already been taken by the 2.5G, which gave users access to a data network (e.g. Internet access, MMS – Multimedia Message Service). However, users and applications demanded more communication power. As a response to this demand a new generation with new standards has been developed - 3G. One 3G network exists in commercial use today has been deployed in Japan in 2001 using international standard IMT-2000, with great success.
Benefiting from 3G constant delays, many new mobile technologies were deployed with great success (e.g. Wi-Fi). Now, all this new technologies (e.g. UMTS, Wi-Fi, Bluetooth) claim for a convergence that can only be achieved by a new mobile generation. This new mobile generation to be deployed must work with many mobile technologies while being transparent to the final user.
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