Propagation channel impact on LTE positioning accuracy: A study based on real measurements of observed time difference of arrival

Author

Medbo, J. ; Siomina, I. ; Kangas, A. ; Furuskog, J.

Author_Institution

Ericsson Res., Ericsson AB, Stockholm, Sweden

fYear

2009

fDate

13-16 Sept. 2009

Firstpage

2213

Lastpage

2217

Abstract

The goal with this work is to evaluate the performance of the observed time difference of arrival (OTDOA) positioning method using real measured channel data in a macro-cellular urban LTE scenario. This has been made possible using a highly accurate channel sounder developed within Ericsson Research. A wideband (20 MHz bandwidth) measurement campaign at 2.66 GHz was performed using three separate base station sites in a realistic deployment. One main conclusion is that the measured channel allows a positioning accuracy of 20 m and 63 m at the median and 95% level respectively. This is a very encouraging result since the FCC requirements are fulfilled with a safe margin in this urban scenario.

Keywords

broadband networks; cellular radio; direction-of-arrival estimation; time-of-arrival estimation; Ericsson Research; FCC requirements; LTE positioning accuracy; base station sites; channel data; channel sounder; macro-cellular urban LTE scenario; observed time difference of arrival positioning method; propagation channel impact; wideband measurement campaign; Base stations; Clocks; Downlink; Extraterrestrial measurements; FCC; Global Positioning System; Position measurement; Time difference of arrival; Time measurement; Timing;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 2009 IEEE 20th International Symposium on

Conference_Location

Tokyo

Print_ISBN

978-1-4244-5122-7

Electronic_ISBN

978-1-4244-5123-4

Type

conf

DOI

10.1109/PIMRC.2009.5450144

Filename

5450144