论文标题
5G新广播未经许可：挑战和评估
5G New Radio Unlicensed: Challenges and Evaluation
论文作者
论文摘要
为了满足对移动数据的高需求，第三代合伙项目（3GPP）建立了一组名为5G新广播（5G NR）的标准。 5G NR的体系结构包括灵活的无线电访问网络和一个核心网络。 3GPP还一直在研究一种新的无线电访问技术，称为5G NR未经许可（5G NR-U），该技术旨在将5G NR扩展到未经许可的频段。在本文中，我们概述了最新的5G NR-U设计元素，并讨论了潜在的问题，包括与其他无执照的技术（例如Wi-Fi）的公平共存。我们使用模拟研究Wi-Fi和5G NR-U系统之间的共存。我们的评估表明，NR-U通常比Wi-Fi（802.11ac）实现更高的吞吐量和更低的延迟。这两个系统经历了不同的缓冲区占用和频谱利用率统计。我们还讨论了NR-U对LTE许可辅助访问（LTE-LAA）提供的改进。
To meet the high demand for mobile data, the Third Generation Partnership Project (3GPP) established a set of standards known as 5G New Radio (5G NR). The architecture of 5G NR includes a flexible radio access network and a core network. 3GPP has also been working on a new radio access technology, called 5G NR Unlicensed (5G NR-U), which aims at extending 5G NR to unlicensed bands. In this paper, we give an overview of the most recent 5G NR-U design elements and discuss potential concerns, including fair coexistence with other unlicensed technologies such as Wi-Fi. We use simulations to study coexistence between Wi-Fi and 5G NR-U systems. Our evaluation indicates that NR-U often achieves higher throughput and lower delay than Wi-Fi (802.11ac). The two systems experience different buffer occupancies and spectrum utilization statistics. We also discuss the improvements that NR-U offers over LTE Licensed Assisted Access (LTE-LAA).
