Position location scheme for low coverage areas

• Published in: Fifth IEE International Conference on 3G Mobile Communication Technologies (3G 2004) The Premier Technical Conference for 3G and Beyond pp. 291 - 295
• Main Authors: Suarez-Robles, G, Munoz-Rodriguez, D, Vargas-Rosales, C, Rodriguez-Cruz, R
• Format: Conference Proceeding
• Language: English
• Published: Stevenage IEE 2004
• Subjects: Applied sciences; Detection, estimation, filtering, equalization, prediction; Exact sciences and technology; Information, signal and communications theory; Mobile radio systems; Signal and communications theory; Signal, noise; Telecommunications and information theory; angle of arrival measurements; DTOA; position location scheme; 3G mobile communication; radio tracking; noise environments; difference time of arrival; direction-of-arrival estimation; radiowave propagation; maximum likelihood estimation; low coverage areas; low subscriber density areas; propagation; cell sizes; network-based hybrid location scheme; mobile users; AOA measurements; base stations; cellular radio; Arrival time; Parameter estimation; Simulation; Subscriber; Base station; Arrival angle; Signal estimation; Feasibility; Maximum likelihood; Localization
• ISBN: 0863413889; 9780863413889
• ISSN: 0537-9989
• DOI: 10.1049/cp:20040683

A network-based hybrid location scheme is proposed for the localization of mobile users at outskirts of coverage areas. Since in the case of low subscriber density areas, the number of base stations is reduced, difference time of arrival (DTOA) and angle of arrival (AOA) measurements are combined to allow acquisition of mobile location using only one BS and one LMU as fixed land references. The feasibility of the proposed methodology, based on maximum likelihood estimation, is examined analytically and via simulation for a variety of propagation scenarios. Results show that the proposed methodology can be applied for a wide range of cell sizes and noise environments.