UMTS Radio Network Planning: Mastering Cell Coupling for Capacity Optimization

1. Front Matter

   Pages i-x

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2. Introduction

   Pages 1-5

3. Radio network modeling and performance evaluation for UMTS

   Pages 7-33

4. Interference-coupling complementarity systems

   Pages 35-61

5. Expected-interference-coupling estimates for network performance

   Pages 63-91

6. Network performance optimization

   Pages 93-149

7. Conclusion

   Pages 151-152

8. Back Matter

   Pages 153-185

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The universalmobiletelecommunications system (UMTS) is a technical standard for a third generation (3G) telecommunication system. UMTS provides data rates more than three 1 times higher than its second generation (2G) predecessors. The increased speed en­ ables, for example, video calls, music downloads, or fast web surfing. The technology is already widely available. In 2007, a total of 166 commercial UMTS radio networks are operational in 66 countries covering all continents (UMTS Forum, 20°7), and there are already more than 100 million UMTS subscribers (3GToday. com, 2007; UMTS Forum, 2006). The market for mobile telecommunication is, however, increasingly competi­ tive, therefore operators need to invest effectively. In Western Europe, mobile phone penetration has reached 100 % in 2006 and the average revenue per customer is de­ clining (3G. co. uk, 2007). Besides spectrum license fees, the main cost driver is network infrastructure (Ellingeret al. , 2002). Radio network planning can cut operational and capital expenditure by up to 30 % (Dehghan, 2005). Good radio network planning is difficult for UMTS, because its radio interface is more complex than anything used at mass-market level before (Dehghan, 2005). Con­ nections are separated via codes; they share the same frequency band and are thus subject to interference. On each link, the system constantly regulates the amount of generated interference to a minimum via a power-control feedback loop.

• Angewandte Mathematik
• Funknetzplanung
• Interferenz
• Kapazitätsoptimierung
• Mobilfunksysteme
• Operations Research
• UMTS
• Universal Mobile Telecommunications System
• interference
• optimization

Dr. Hans-Florian Geerdes is a scientist at Zuse Institute Berlin and at the DFG research center MATHEON: Mathematics for Key Technologies. His research focuses on applications of combinatorial optimization in wireless telecommunications.

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