Title :
LTE Fingerprinting Localization with Altitude
Author :
Wigren, Torbjörn
Author_Institution :
Ericsson AB, Stockholm, Sweden
Abstract :
The paper shows how to add altitude to the adaptive enhanced cell identity (AECID) fingerprinting localization method in the long term evolution (LTE) cellular system. This improves the precision of E- 911 emergency positioning in vertically extended regions like in tall buildings. The altitude is added to the corners of a polygon using assisted GPS (A-GPS), observed time difference of arrival (OTDOA) or uplink time difference of arrival (U-TDOA) altitude measurements of opportunity. A new algorithm transforms to a 3-dimensional point with an ellipsoidal uncertainty, since the latter format is standardized on all LTE position reporting interfaces.
Keywords :
Global Positioning System; Long Term Evolution; fingerprint identification; height measurement; radio links; A-GPS; AECID fingerprinting localization method; E-911 emergency positioning; LTE; OTDOA; U-TDOA altitude measurement; adaptive enhanced cell identity; assisted GPS; long term evolution cellular system; observed time difference of arrival; polygon; uplink time difference of arrival; vertically extended regions; Ellipsoids; Fingerprint recognition; GSM; Gravity; Position measurement; Standards; Uncertainty;
Conference_Titel :
Vehicular Technology Conference (VTC Fall), 2012 IEEE
Conference_Location :
Quebec City, QC
Print_ISBN :
978-1-4673-1880-8
Electronic_ISBN :
1090-3038
DOI :
10.1109/VTCFall.2012.6398972