Positioning Method Based on Cell Azimuth in VoLTE Test for High-speed Railway

被引：0
|
作者：
Duan B. [1 ]
Li C. [1 ]
Xie J. [1 ]
Lü A. [1 ]
机构：
[1] School of Electronic and Information Engineering, Lanzhou Jiaotong University, Lanzhou
来源：
Tiedao Xuebao/Journal of the China Railway Society | 2020年 / 42卷 / 01期
关键词：
Cell azimuth; Interpolation period; Position accuracy; Sampling period; Voice over LTE;
D O I：
10.3969/j.issn.1001-8360.2020.01.008
中图分类号：
学科分类号：
摘要：
VoLTE test is very important for optimizing the performance of 4G network of high-speed railway(HSR) and evaluate the comfort level of HSR. In respect of the lack of GPS signal in high-speed 4G HD VoLTE test, the intersection of the cell antenna's main lobe directional beam and the HSR trajectory was calculated based on the cell azimuth and the HSR map. According to the coverage switch intersection of adjacent base stations, the coverage areas of each base station were found out. Within the coverage areas, the ratio of longitude and latitude points of railway track discretization to RSRP sampling points of test terminal was used as interpolation period. When GPS was missing from the test, the latitude and longitude information of the equal orbit was uniformly interpolated to locate the test terminal. Through the test and simulation analysis of different topographies of Lanzhou-Urumqi HSR, the results show that the positioning accuracy is less than 10m by this method in the absence of test terminal GPS signal, which meets the requirement of location information for the HSR VoLTE test data analysis. © 2020, Department of Journal of the China Railway Society. All right reserved.
引用
收藏
页码：52 / 58
页数：6
相关论文
共 12 条
  • [1] Song Q., Song Y.D., Data-based Fault-tolerant Control of High-speed Trains with Traction/Braking Notch Nonlinearities and Actuator Failures, IEEE Transactions on Neural Networks, 22, 12, pp. 2250-2261, (2011)
  • [2] Wang H., Wang X., Dang J., Et al., Comprehensive Evaluation of Comfort of High-speed Trains Based on Fuzzy Reduction, Journal of the China Railway Society, 32, 5, pp. 98-102, (2010)
  • [3] Zhang J., Tan Z., Yu X., Et al., Review of Public Broadband Access Systems for High-speed Railways and Key Technologies, Journal of the China Railway Society, 34, 1, pp. 46-53, (2012)
  • [4] Zhang Y., Cross P., Integrated GNSS with Different Accuracy of Track Database for Safety-critical Railway Control Systems, GPS Solutions, 16, 2, pp. 169-179, (2012)
  • [5] Luan F.Y., Zhang Y., Xiao L.M., Et al., Fading Characteristics of Wireless Channel on High-speed Railway in Hilly Terrain Scenario, International Journal of Antennas and Propagation, 2013, 3, (2013)
  • [6] Li C., Xie J., Hu W., Et al., Research on Train Positioning Method Based on LTE-R, Journal of the China Railway Society, 37, 7, pp. 15-19, (2015)
  • [7] Beugin J., Marais J., Simulation-based Evaluation of Dependability and Safety Properties of Satellite Technologies for Railway Localization, Transportation Research Part C, 22, pp. 42-57, (2012)
  • [8] Shao Z., Li W., Wu Y., Et al., Fuzzy Adaptive Algorithm Based on Modified Current Statistical Model for Vehicle Positioning, Journal on Communications, 34, 7, pp. 184-190, (2013)
  • [9] Liu J., Cai B., Wang J., Map-aided BDS/INS Integration Based Track Occupancy Estimation Method for Railway Trains, Journal of the China Railway Society, 36, 3, pp. 49-58, (2014)
  • [10] Noureldin A., Karamat T.B., Eberts M.D., Et al., Performance Enhancement of MEMS-based INS/GPS Integration for Low-cost Navigation Applications, IEEE Transactions on Vehicular Technology, 58, 3, pp. 1071-1096, (2009)
12