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arXiv 2209.01183cs.ITmath.IT
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5G-Advanced中的室内定位:利用载波相位增强实现厘米级精度的挑战与解决方案

Indoor Positioning in 5G-Advanced: Challenges and Solution towards Centimeter-level Accuracy with Carrier Phase Enhancements

Jakub Nikonowicz, Aamir Mahmood, Muhammad Ikram Ashraf, Emil Björnson, Mikael Gidlund

AI总结:

本文研究5G-Advanced室内厘米级定位,阐述Rel-18载波相位测量对时间与角度定位的补充作用,并分析其挑战及相位连续参考信令方案。

摘要:

在实现稳健连接之后,精确定位正逐渐成为5G服务产品中的创新组成部分,面向具有挑战性室内无线电环境的工业用例和垂直行业。在此方向上,3GPP Rel-16标准在规范关键创新方面成为转折点,随后Rel-17和Rel-18又进行了增强。本文中,我们首先阐述5G定位框架、测量和流程,之后主要将重点转向Rel-18中近期确定的载波相位(CP)测量,将其作为基于时间和角度的定位方法的补充测量。我们讨论利用CP的相关挑战和潜在解决方案,包括整周模糊度、多径敏感性和信令方面。此外,我们通过真实仿真研究相位连续参考信令如何应对含噪相位测量,以在室内工厂(InF)场景中实现厘米级精度。

英文摘要:

After robust connectivity, precise positioning is evolving into an innovative component of 5G service offerings for industrial use-cases and verticals with challenging indoor radio environments. In this direction, the 3GPP Rel-16 standard has been a tipping point in specifying critical innovations, followed by enhancements in Rel-17 and Rel-18. In this article, we elaborate on the 5G positioning framework, measurements, and procedures before shifting the focus mainly to recently identified carrier-phase (CP) measurements in Rel-18 as a complementary measure for time- and angular-based positioning methods. We discuss the associated challenges and potential solutions for exploiting CP, including integer ambiguity, multipath sensitivity, and signaling aspects. Furthermore, we study how phase-continuous reference signaling can counter noisy phase measurements using realistic simulations to achieve centimeter-level accuracy in indoor factory (InF) scenarios.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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