Since the introduction of the Global System for Mobile Communications (GSM), as the most widely deployed second generation mobile communication standard, about fifteen years ago, mobile communication has established itself as a remarkably large business. The number of subscribers worldwide has constantly been growing and has exceeded the two billion mark in the year 2005. While the penetration of citizens with a subscription to a mobile communication network has exceeded 80% in many countries in the western world and a further increase in total revenue will require an increase in Average Revenue Per Subscriber (ARPU), there are still large emerging markets, in particular in Asia, with a rather low penetration of mobile subscribers.
KeywordsMobile Communication Call Admission Control Radio Resource Management Mobile Subscriber Base Station Antenna
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