摘要
RAT-dependent是5G自带的不依赖卫星的定位技术。3GPP给出了单站理想条件下的定位精度克拉默-拉奥下界(CRLB,Cramer-Rao lower bound)并给出了多站在不同网络配置下的仿真定位精度。基于实际组网条件提出了多站定位精度的分析框架和精度范围,并提出相应的提升方法,实验结果表明,RAT-dependent定位精度与组网技术紧密相关,优化方案相对于非优化方案定位精度可提升20%~30%。
RAT-dependent is a satellite independent positioning technology of 5G.3GPP gives the Cramer-Rao lower bound(CRLB) of the positioning accuracy under the ideal condition of a single station and the simulation positioning accuracy of multi-station under different network configurations.Based on the actual network conditions,the analysis framework,accuracy range of multi-station positioning accuracy and the corresponding improvement method were proposed.The experimental results show that the RAT-dependent positioning accuracy is closely related to network technologies,and the positioning accuracy of the optimized scheme can be improved by 20%~30% compared with the non-optimized scheme.
作者
赵飞龙
王丽莉
ZHAO Feilong;WANG Lili(China Mobile Group Hainan Co.,Ltd.,Haikou 571250,China;National Engineering Research Center for New Generation Mobile Information and Communication Technology Hainan Branch,Haikou 571250,China)
出处
《物联网学报》
2023年第3期95-102,共8页
Chinese Journal on Internet of Things
基金
国家重点研发计划(No.2022YFB3900011)。
