5G网络辅助的GNSS定位性能分析

The Performance Analysis of 5G Network-assisted GNSS Positioning

首先介绍了5G网络辅助的GNSS定位原理,包括基于UE的GNSS定位和UE辅助的GNSS定位,5G网络的低时延特性使得UE辅助的GNSS定位方法可能用于高速移动的UE。然后分析了UE辅助的GNSS定位精度,当UE移动速度为200 km/h时,对于eMBB TDD SCS=30 kHz、eMBB FDD SCS=15 kHz和uRLLC,由于网络时延造成的GNSS定位误差分别是0.71 m、0.86 m和0.33 m。最后分析了UE GNSS接收机上报的原始测量数据的影响因素和大小,对于BDS和GPS,一次上报的测量数据分别是4238 bit和5650 bit,一次同时上报BDS和GPS的测量数据是9888 bit。

Firstly,it introduces the theory of 5G network-assisted GNSS positioning,including UE-Based GNSS positioning and UE-Assisted GNSS positioning,it is possible that UE-Assisted GNSS positioning is applied to high speed moving UE because 5G has the feature of low delay.Secondly,it analyzes the accuracy of UE-Assisted GNSS positioning.When the velocity is 200 km/h,the positioning error because of network delay is 0.71 m,0.86 m and 0.33 m for eMBB TDD SCS=30 kHz,eMBB FDD SCS=15 kHz and uRLLC respectively.Finally,it analyzes the factors and size of original measurement information from UE GNSS receiver,with regard to BDS and GPS,the measurement information is 4238 bits and 5650 bits respectively for one report,the measurement information is 9888 bits if the measurement information of BDS and GPS is reported simultaneously.