Research Article
Optimizing Location Positioning Using Hybrid TOA-AOA Techniques in Mobile Cellular Networks
@INPROCEEDINGS{10.4108/ICST.MOBIMEDIA2007.1906, author={Nikos Deligiannis and Spiros Louvros and Stavros Kotsopoulos}, title={Optimizing Location Positioning Using Hybrid TOA-AOA Techniques in Mobile Cellular Networks}, proceedings={3rd International ICST Conference on Mobile Multimedia Communications}, proceedings_a={MOBIMEDIA}, year={2010}, month={5}, keywords={Location Positioning Time of Arrivals (TOA) Angle of Arrivals (AOA) Hybrid Techniques.}, doi={10.4108/ICST.MOBIMEDIA2007.1906} }- Nikos Deligiannis
Spiros Louvros
Stavros Kotsopoulos
Year: 2010
Optimizing Location Positioning Using Hybrid TOA-AOA Techniques in Mobile Cellular Networks
MOBIMEDIA
ICST
DOI: 10.4108/ICST.MOBIMEDIA2007.1906
Abstract
Mobile Positioning is a great aspect in mobile cellular networks (GSM, UMTS etc) as it makes it possible to introduce a new class of applications based on the knowledge of the subscriber's position. Therefore, it can be quite useful for the support of multimedia streaming application's performance. Although several complicated techniques have been introduced, the need for implementation simplicity holds interest for conventional techniques such as Time of Arrivals (TOA) and Angle of Arrivals (AOA). In this paper we introduce two enhanced versions of the latter techniques, Enhanced Time of Arrivals (E-TOA) and Enhanced Angle of Arrival (E-AOA), in order to optimize the location positioning estimations. The accuracy is improved by introducing additional weight coefficients reflecting the LOS/nLOS propagation. Finally, the resulting cost functions are simulated in three 2-D, single ray trace microcellular simulation environments and compared to existing techniques. The results have shown good reduction of the location error which in urban environment reaches the value of 40%.
