P-CPICH power and antenna tilt optimization in UMTS networks
P-CPICH power and antenna tilt optimization in UMTS networks
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UMTS 网络中的 P-CPICH 功率和天线倾斜优化
DOI：
10.1109/aict.2005.66
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
I. Siomina
中科院分区：
文献类型：
--
作者：
I. Siomina
UMTS网络中的导频功率优化是一个重要的工程问题，受到越来越多的关注。已经表明，分配P-CPICH（主公共导频信道）功率电平的优化方法便于UMTS网络中的覆盖控制并显著提高无线电资源利用率。与无线电基站天线倾斜的优化相结合，这成为一个强大的工具，可以显著降低网络中的总干扰水平，并非常有效地提高网络容量。本文解决了导频功率和天线倾斜优化问题，并提出了一种有效的算法，优化天线下倾设置在网络中，使总P-CPICH功率最小化。一个案例研究已经完成了基于里斯本市的真实的数据的网络场景。数值结果表明，优化的天线倾斜可以给最佳导频功率电平的减少高达50%。
Pilot power optimization in UMTS networks is a crucial engineering issue which has been receiving increasing interest. It has been shown that the optimization approach to assigning the P-CPICH (primary common pilot channel) power levels facilitates coverage control and improves significantly radio resource utilization in UMTS networks. Combined with optimization of radio base station antenna tilt, this becomes a powerful tool that allows the total interference level in the network to be significantly reduced and the network capacity to be very efficiently improved. The paper addresses the pilot power and antenna tilt optimization problem and presents an efficient algorithm that optimizes the antenna downtilt setting in the network such that the total P-CPICH power is minimized. A case study has been done for a network scenario based on real data for the city of Lisbon. The numerical results demonstrate that the optimized antenna tilting can give a reduction of up to 50% in the optimal pilot power levels.