论文标题
5G的有条件切换：原理，未来用例和FR2性能
Conditional Handover in 5G: Principles, Future Use Cases and FR2 Performance
论文作者
论文摘要
本文详细阐述了条件交换（CHO） - 第三代合作伙伴项目（3GPP）版本中设计的移动性功能，旨在提高蜂窝网络中移交的可靠性。 Cho原来是一项成功的功能，并吸引了其他几个移动网络，在这些领域也需要提高的可靠性（例如，非事物网络或集成访问回程）。本文解释了CHO的原理，描述了其未来在垂直区域的使用，并提供了性能结果，表明CHO在更高频段的5G系统中可能会提供收益。我们的模拟分析集中在频率范围2（FR2）和CHO恢复程序中的移交方面。结果表明，在较高频率下，与发行版15的基线移交相比，CHO可以大大减少移动性故障。此外，已经验证，Cho Recovery可以是一种有用的手段，可以使更快地重新连接到失败后与网络重新连接。在某些情况下，发现CHO恢复使用率超过80％。该论文还概述了CHO领域的未来研究和标准化方向，这似乎是3GPP版本18及以后的进一步发展的稳固候选者。
This paper elaborates on Conditional Handover (CHO) - a mobility feature designed in Release 16 of 3rd Generation Partnership Project (3GPP), aimed at improving the reliability of handover in cellular networks. CHO has turned out to be a successful feature and attracted several other areas of mobile networks, where increased reliability is also desirable (e.g. Non-Terrestrial Networks or Integrated Access Backhaul). This paper explains the principles of CHO, describes its future use in vertical areas and provides performance results showing the gains CHO may offer to 5G systems at higher frequency bands. Our simulative analysis was focused on the handover in Frequency Range 2 (FR2) and CHO recovery procedure. Results have shown that also at higher frequencies CHO can substantially reduce the mobility failures compared to baseline handover of Release 15. Moreover, it has been verified that CHO recovery can be a useful means to allow faster reconnection to the network after a failure. In certain scenarios CHO Recovery usage ratio was found to exceed 80%. The paper also outlines the future research and standardization directions in the area of CHO which appears to be a solid candidate for further development in 3GPP Release 18 and beyond.
