基于5G移动通信系统融合定位的关键技术与系统架构演进

Key technologies and system architecture evolution of fusion positioning based on 5G mobile communication systems

第5代(5G)移动通信系统驱动着互联网应用向物联网和工业互联网的方向发展.随着各类新型终端(如增强现实/虚拟现实设备、低功耗传感器、无人化智能机器设备)接入网络,5G应用对定位服务的需求持续增长,并且在定位场景、定位精度、定位安全性等方面出现了差异化、多样化的需求.基于5G网络提供的通信能力,可以融合5G带内定位、卫星定位、视觉定位等多种定位手段,从而大幅提高复杂环境下室内外综合定位系统的覆盖范围与定位精度.本文从系统架构和关键技术两个方面介绍了5G融合定位领域研究的最新进展,重点分析了5G带内无线定位和5G融合定位的技术路线,并展望了面向6G的时空服务系统的架构演进与技术挑战.

The 5th generation(5G)wireless system drives Internet developments along the direction of the Internet of Things and the Industrial Internet.Following several new types of terminals(such as Augmented/Virtual Reality devices,low-power sensors,unmanned intelligent machines)accessing the network,the demand for positioning services continues to improve with differentiated and diversified requirements in terms of scenarios,accuracy,and security.Based on the connection capability provided by the 5G network,5G positioning technology can effectively integrate in-band positioning,Global Navigation Satellite System(GNSS),visual positioning,and other positioning methods,greatly improving the coverage and the accuracy of indoor and outdoor positioning in complex environments.In this paper,we discuss the latest developments in 5G fusion positioning in two aspects:system architecture and key technologies.Also,we analyze the technical route of 5G in-band positioning and 5G fusion positioning.Finally,we look forward to embracing the architecture evolution and facing technical challenges toward the 6G space-time service system.