The Impact of New Features on Positioning Technology in LTE-A System

As the location based services develop, more and more researches have been focused on the positioning technologies in mobile networks. The long term evolution advanced (LTE-A) system, commercialized as the 4th generation (4G) mobile communication system, is based on the following key features: the orthogonal frequency division multiplexing (OFDM), the relay, the multiple input multiple outputs (MIMO), the carrier aggregation (CA), and the coordinated multipoint transmission and reception (CoMP). In this paper, the impact of these features on the existing positioning technology specified in the LTE-A standards is systematically investigated. Moreover, two approaches are proposed to take full advantage of these features in terms of positioning technologies and the key positioning parameters, including the reference signal time difference (RSTD) in the observed time difference of arrival (OTDOA) technology and user equipment receiving time subtracting transmitting time (UE Rx-Tx) in the enhanced cell identity (E-CID) technology.

[1]  Wolfgang Koch,et al.  Accuracy analysis for TDOA localization in sensor networks , 2011, 14th International Conference on Information Fusion.

[2]  K. C. Ho,et al.  A simple and efficient estimator for hyperbolic location , 1994, IEEE Trans. Signal Process..

[3]  Jonas Medbo,et al.  Propagation channel impact on LTE positioning accuracy: A study based on real measurements of observed time difference of arrival , 2009, 2009 IEEE 20th International Symposium on Personal, Indoor and Mobile Radio Communications.

[4]  Torbjörn Wigren.  Adaptive Enhanced Cell-ID Fingerprinting Localization by Clustering of Precise Position Measurements , 2007, IEEE Transactions on Vehicular Technology.

[5]  Mounir Ghogho,et al.  A Joint TOA/AOA Constrained Minimization Method for Locating Wireless devices in Non-Line-of-Sight Environment , 2007, 2007 IEEE 66th Vehicular Technology Conference.

[6]  Tao Zhang,et al.  A novel OTDOA positioning scheme in Heterogeneous LTE-Advanced systems , 2012, 2012 3rd IEEE International Conference on Network Infrastructure and Digital Content.

[7]  Umberto Mengali,et al.  TOA Estimation with the IEEE 802.15.4a Standard , 2010, IEEE Transactions on Wireless Communications.

[8]  Rui Chang,et al.  Interference coordination and cancellation for 4G networks , 2009, IEEE Communications Magazine.

[9]  Yuan Chen,et al.  Performance analysis of pilot aided channel estimation methods for MBSFN in LTE system , 2011, 2011 International Conference on Computational Problem-Solving (ICCP).

[10]  Stephan Sand,et al.  OFDM indoor positioning based on TDOAs: Performance analysis and experimental results , 2012, 2012 International Conference on Localization and GNSS.

[11]  Joonhyuk Kang,et al.  A novel location finding system for 3GPP LTE , 2009, 2009 IEEE 20th International Symposium on Personal, Indoor and Mobile Radio Communications.

[12]  Massimo Crisci,et al.  Achievable localization accuracy of the positioning reference signal of 3GPP LTE , 2012, 2012 International Conference on Localization and GNSS.

[13]  Jianping An,et al.  Constrained Total Least-Squares Location Algorithm Using Time-Difference-of-Arrival Measurements , 2010, IEEE Transactions on Vehicular Technology.

[14]  A. Dammann,et al.  Particle filter based positioning with 3GPP-LTE in indoor environments , 2012, Proceedings of the 2012 IEEE/ION Position, Location and Navigation Symposium.

[15]  T.B. Sorensen,et al.  Extension of the ITU channel models for wideband (OFDM) systems , 2005, VTC-2005-Fall. 2005 IEEE 62nd Vehicular Technology Conference, 2005..

[16]  Stephan Sand,et al.  Joint GNSS and 3GPP-LTE Based Positioning in Outdoor-to-Indoor Environments - Performance Evaluation and Verification , 2011 .

[17]  Chen Zhu.  High accuracy multi-link synchronization in LTE: Applications in localization , 2012, 2012 16th IEEE Mediterranean Electrotechnical Conference.

[18]  Siyi Wang,et al.  Interference-Aware Self-Deploying Femto-Cell , 2012, IEEE Wireless Communications Letters.

[19]  Torbjörn Wigren,et al.  Estimation of prior positioning method performance in LTE , 2011, 2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications.