A novel OTDOA positioning scheme in Heterogeneous LTE-Advanced systems

Author

Tao Zhang ; Dengkun Xiao ; Jie Cui ; Xinlong Luo

Author_Institution

Sch. of Inf. & Commun. Eng., Beijing Univ. of Posts & Telecommun., Beijing, China

fYear

2012

fDate

21-23 Sept. 2012

Firstpage

106

Lastpage

110

Abstract

The Observed Time Difference of Arrival (OTDOA) as a major positioning method in 3rd Generation Partnership Project (3GPP) specification has been deeply researched in Long Term Evolution Advanced (LTE-A) system. This paper analyzes the new interference scenarios in Heterogeneous Network (Het-Net) and the drawbacks of conventional OTDOA method which are caused by LPN (Low Power Nodes) deployed in Het-Net. In this paper, we propose a Time division multiplex (TDM) and a Code division multiplex (CDM) scheme for positioning reference signal (PRS) transmitting to solve these problems in Het-Net. Simulation results show that the proposed scheme can greatly improve the positioning accuracy compared with the conventional method and its performance meets the Federal communication commission (FCC) requirement.

Keywords

3G mobile communication; Long Term Evolution; code division multiplexing; direction-of-arrival estimation; radiofrequency interference; time division multiplexing; time-of-arrival estimation; 3GPP specification; 3rd generation partnership project specification; CDM scheme; FCC; Federal communication commission; Het-Net; LPN; LTE-A system; Long Term Evolution advanced system; OTDOA positioning scheme; PRS; TDM scheme; code division multiplex scheme; heterogeneous LTE-advanced systems; heterogeneous network; interference scenarios; low power nodes; observed time-difference-of-arrival estimation; positioning reference signal; time division multiplex scheme; Accuracy; Antennas; FCC; Indexes; Interference; OFDM; Time division multiplexing; CDM; Het-Net; OTDOA; PRS; TDM;

fLanguage

English

Publisher

ieee

Conference_Titel

Network Infrastructure and Digital Content (IC-NIDC), 2012 3rd IEEE International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4673-2201-0

Type

conf

DOI

10.1109/ICNIDC.2012.6418722

Filename

6418722