4
OVERVIEW OF CELLULAR MOBILE NETWORKS
You think you understand the situation, but what you don’t understand is that the situation just changed.
—Putnam Investments advertisement
4.1 INTRODUCTION
Cellular mobile networks have been the fastest growing segment in the field of telecommunications over the past decade. Over 2.4 billion customers were estimated to use cellular mobile services by the third quarter of 2006. Even with such numbers the cellular industry has a long way to go in terms of both organic growth and continuous introduction of new technologies and services. The reasons are not hard to find. While the penetration rates in some parts of the world (such as Europe, Japan, Korea, and the United States) range between 70 and 100%, ...
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