毫米波频段超密集5G网络的设计考虑

N. Al-Falahy, O. Alani
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引用次数: 18

摘要

与目前的蜂窝网络相比,第五代(5G)网络将提供具有极高数据速率和延迟需求的服务,并为具有不同需求和应用的众多设备提供巨大的容量和连接。本文认为,在高载波频率下密集部署小蜂窝是未来5G网络的主题。本研究中描述的网络致密化包括通过在毫米波频段中采用更宽的带宽来实现频率上的致密化,以及通过增加天线数量、提高扇区顺序和密集部署小基站来实现空间上的致密化。参考信号接收功率(RSRP)和质量(RSRQ)以及信噪比(SINR)作为设计评价的指标。我们的研究结果表明,网络致密化对于提高数据速率以满足5G愿景具有重要意义。而密集部署的小型基站在更高的扇区化顺序上具有更好的性能,因为前者的站点覆盖线更高,干扰更低。此外,结果表明,增加天线的密度对于通过多输入多输出实现空间复用和通过波束成形提高信噪比,从而最终提高数据速率也至关重要。毫米波波段的树叶损失和降雨是显著的,因此,它们的影响也已被评估。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Design considerations of ultra dense 5G network in millimetre wave band
The fifth Generation (5G) network will provide services with extreme data rate and latency demands compared to current cellular networks, and provide massive capacity and connectivity to multitude of devices with diverse requirements and applications. In this paper, dense deployment of small cells in high carrier frequency is considered as the theme of future 5G network. Network densification depicted in this work includes densification over the frequency by the adoption of wider bandwidth in the millimetre wave band, and densification over the space through higher number of antennas, higher sectorisation order, and dense deployment of small cells. The reference signal received power (RSRP) and quality (RSRQ), and signal to interference plus noise ratio (SINR) have been considered as the metrics for the design evaluation. Our results show that network densification has significant importance in improving data rate to meet 5G vision. And that dense deployment of small cells has better performance over higher sectorisation order, due to the higher line of site coverage and lower interference in the former case. In addition, the results show that densification in term of increasing the antennas is also vital to enable spatial multiplexing through multi-input-multi-output and enable beamforming to improve SINR, which eventually improve the data rate. Foliage loss and rain at millimetre wave bands are significant, and therefore, their impact has been evaluated as well.
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