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Small cells placement scheme in metropolitan area environment

机译：大都市环境中的小型细胞安置方案

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摘要

The low power radio access nodes, also known as small cells, are always applied to compensate the coverage of macro cells so as to increase the network capacity. The radio spectrum condition is greatly affected by the buildings and there will be many communication dead zones in the metropolitan area environment if only macro cells are deployed. Generally, the communication dead zone is always small and in irregular shape, therefore, the deployment of small cells is one of the most convincible ways to deal with it. However, the interference, necessary overlapping for handoff, coverage improvement, and cost are correlated to one another. And it is hard to determine the number and locations of small cells to be deployed. In this paper, we propose the Particle Swarm Optimization (PSO) based small cell placement algorithm to effectively deploy the small cells in the communication dead zone of metropolitan area. The fitness value in the PSO process of the proposed scheme is tuned by the adaption function to compromise the coverage maximization and necessary overlapping of small cells. A practical area of Taipei City was adopted as an experimental example to investigate the performance of the proposed scheme. The experimental results illustrate that the proposed scheme places small cells in proper locations so that the coverage can be effectively improved.
机译：始终应用低功率无线电接入节点，也称为小单元以补偿宏小区的覆盖范围，以增加网络容量。无线电谱条件受建筑物的影响很大，如果部署宏小区，大都市区域环境中将存在许多通信死区。通常，通信死区总是小而且以不规则的形状，因此，小电池的部署是处理它最令人信服的方式之一。然而，干扰，切换的必要重叠，覆盖改善和成本彼此相关。并且很难确定要部署的小单元的数量和位置。在本文中，我们提出了基于粒子群优化（PSO）的小小区放置算法，以有效地部署了大都市区通信死区的小小区。所提出的方案的PSO过程中的适应值由适应功能调整，以损害覆盖范围最大化和小细胞的必要重叠。采用了台北市的实际面积作为调查拟议计划的绩效的实验例子。实验结果说明了所提出的方案将小单元放置在适当的位置，以便可以有效地提高覆盖范围。

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