Affiliations: University Carlos III of Madrid, Madrid, Spain
Note: [] Corresponding author: Mario Muñoz-Organero, University
Carlos III of Madrid, Av. Universidad 30, E-29811 Leganés, Madrid, Spain.
Tel.: +34 916248801; Fax: +34 916248749; E-mail: munozm@it.uc3m.es
Abstract: Different systems have been proposed to estimate the position of a
mobile device using Bluetooth based on metrics such as the Radio Signal
Strength Indicator (RSSI), the received Bit Error Rate (BER) or the Cellular
Signal Quality (CSQ). These systems try to improve the estimation accuracy of
the basic and straightforward triangulation method among discovered BT
reference base stations at the cost of requiring that the positioning
application has access to low level hardware related data (provided by the Host
Controller Interface) and obtaining information which is in many cases
hardware, and therefore device, dependent. In this paper we design, simulate,
implement and validate a Bluetooth positioning system that only requires the
ability to handle SDP service records at the application level, achieving mean
errors around 1 to 3 meters, improving the basic triangulation method among
discovered BT reference base stations.
Keywords: Indoor positioning systems, pervasive computing, mobile computing, mobile systems, mobile applications
