Title :
Improving accuracy for OTD based 3G geolocation in real urban/suburban environments
Author :
Vieira, P. ; Silva, N.O. ; Fernandes, N. ; Rodrigues, A. ; Varela, L.
Author_Institution :
Lisbon Polytech. Inst. (ISEL), Univ. of Lisbon, Lisbon, Portugal
Abstract :
This paper presents the recent research results about the development of a Observed Time Difference (OTD) based geolocation algorithm based on network trace data, for a real Universal Mobile Telecommunication System (UMTS) Network. The initial results have been published in [1], the current paper focus on increasing the sample convergence rate, and introducing a new filtering approach based on a moving average spatial filter, to increase accuracy. Field tests have been carried out for two radio environments (urban and suburban) in the Lisbon area, Portugal. The new enhancements produced a geopositioning success rate of 47% and 31%, and a median accuracy of 151 m and 337 m, for the urban and suburban environments, respectively. The implemented filter produced a 16% and 20% increase on accuracy, when compared with the geopositioned raw data. The obtained results are rather promising in accuracy and geolocation success rate. OTD positioning smoothed by moving average spatial filtering reveals a strong approach for positioning trace extracted events, vital for boosting Self-Organizing Networks (SON) over a 3G network.
Keywords :
3G mobile communication; mobility management (mobile radio); moving average processes; OTD based 3G geolocation; UMTS network; moving average spatial filter; network trace data; observed time difference; self-organizing networks; universal mobile telecommunication system; 3G mobile communication; Accuracy; Geology; Kalman filters; Niobium; Wireless communication;
Conference_Titel :
Wireless Personal Multimedia Communications (WPMC), 2014 International Symposium on
Conference_Location :
Sydney, NSW
DOI :
10.1109/WPMC.2014.7014845