By Vijay K. Garg
More than three-fourths of Internet users are also wireless users, and a mobile subscriber is four times more likely to use the Internet than a nonsubscriber to mobile services. Such keen interest in both industries is prompting user demand for converged services. With more than a billion Internet users, the potential market for Internet-related wireless data services is very large.
In this chapter, we briefly discuss 1G, 2G, 2.5G and 3G cellular systems and outline the ongoing standard activities in Europe, North America and Japan. We also introduce broadband (4G) systems aimed at integrating WWAN, WLAN and WPAN.
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