Abstract

Two radio air interfaces, Evolved-LTE and New Radio, coexist in new 5G systems. New Radio operates in the millimeter band and provides a better bandwidth, but the higher frequencies also imply worse radio conditions. Multi-connectivity, a feature of 5G that allows users to connect to more than one base station simultaneously, can offer the advantages of both interfaces. In this paper, we investigate how multi-connectivity can improve user reliability and the system’s energy efficiency. Five algorithms for secondary cell association are presented and evaluated. We show a decrease in the radio link failure rate of up to 50% at high speeds and improvements of the energy efficiency of up to 20% at low speeds.

中文翻译：

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超密集5G网络的高能效多连接性算法

摘要

新的5G系统中共存有两个无线电空中接口，即演进型LTE和新无线电。新无线电在毫米波段工作并提供更好的带宽，但是更高的频率也意味着更糟糕的无线电条件。多连接性是5G的一项功能，它允许用户同时连接多个基站，可以提供两个接口的优点。在本文中，我们研究了多重连接如何提高用户可靠性和系统的能源效率。提出并评估了五种辅助细胞关联算法。我们显示，在高速情况下，无线链路故障率降低了50％，在低速情况下的能量效率提高了20％。