Konrad-zuse-zentrum F ¨ Ur Informationstechnik Berlin Umts Radio Network Evaluation and Optimization beyond Snapshots Umts Radio Network Evaluation and Optimization beyond Snapshots
Konrad-zuse-zentrum F ¨ Ur Informationstechnik Berlin Umts Radio Network Evaluation and Optimization beyond Snapshots Umts Radio Network Evaluation and Optimization beyond Snapshots
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Konrad-zuse-zentrum F ¡ Ur Informationstechnik Berlin Umts 超越快照的无线电网络评估和优化 Umts 超越快照的无线电网络评估和优化
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通讯作者：
R. Wessäly
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作者：
Andreas Eisenbl¨atter;Hans;T. Koch;Alexander Martin;Roland Wess¨aly;A. Eisenblätter;R. Wessäly
本文主要研究UMTS无线网络的设计。任务是重新配置天线和相关的小区，以提高网络质量。与第二代GSM网络相比，干扰在第三代无线电网络的设计中起着至关重要的作用。最近通过线性方程系统的无线电网络的紧凑表征允许评估小区负载和干扰。这种表征是基于用户快照，并在这里概括为平均流量强度。这允许克服基于快照的网络优化方法的臭名昭著的困难。一个混合整数规划模型的网络设计问题的回忆，是基于用户快照，并与一个新的网络设计模型的基础上的平均耦合公式进行了对比。示例性地集中在优化天线倾斜的特别重要的问题，计算结果提出了一个快速的本地搜索算法和MIP求解器的应用程序，这两个模型。这些结果表明，新的平均为基础的方法优于国家的最先进的UMTS无线电网络优化的快照模型。
This paper is concerned with UMTS radio network design. The task is to recon-figure antennas and the related cells as to improve network quality. In contrast to second generation GSM networks, interference plays a paramount role in the design of third generation radio networks. A recent compact characterization of a radio network through a linear equation system allows to assess cell load and interference. This characterization is based on user snapshots and is generalized here to average traffic intensities. This allows to overcome the notorious difficulties of snapshot-based network optimization approaches. A mixed-integer programming model for the network design problem is recalled that is based on user snapshots and it is contrasted with a new network design model based on the average coupling formulation. Exemplarily focusing on the particularly important problem of optimizing antenna tilts, computational results are presented for a fast local search algorithm and for the application of a MIP solver to both models. These results demonstrate that the new average-based approaches outperform state-of-the-art snapshot models for UMTS radio network optimization.